[457] | 1 | /* sniffer.c
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| 2 | *
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| 3 | * Copyright (C) 2006-2020 wolfSSL Inc.
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| 4 | *
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| 5 | * This file is part of wolfSSL.
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| 6 | *
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| 7 | * wolfSSL is free software; you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation; either version 2 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * wolfSSL is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with this program; if not, write to the Free Software
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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| 20 | */
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| 21 |
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| 22 |
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| 23 | #ifdef HAVE_CONFIG_H
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| 24 | #include <config.h>
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| 25 | #endif
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| 26 |
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| 27 | #include <wolfssl/wolfcrypt/settings.h>
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[464] | 28 | #include <wolfssl/wolfcrypt/wc_port.h>
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[457] | 29 |
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[464] | 30 | /* xctime */
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| 31 | #ifndef XCTIME
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| 32 | #define XCTIME ctime
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| 33 | #endif
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| 34 |
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| 35 | /* only in this file, to avoid confusing future ports leave
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| 36 | * these defines here. Do not move to wc_port.h */
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| 37 | #ifdef USER_CUSTOM_SNIFFX
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| 38 | /* To be implemented in user_settings.h */
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| 39 | #elif defined(FUSION_RTOS)
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| 40 | #include <fcl_network.h>
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| 41 | #define XINET_NTOA FNS_INET_NTOA
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| 42 | #define XINET_ATON FNS_INET_ATON
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| 43 | #define XINET_PTON(a,b,c,d) FNS_INET_PTON((a),(b),(c),(d),NULL)
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| 44 | #define XINET_NTOP(a,b,c,d) FNS_INET_NTOP((a),(b),(c),(d),NULL)
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| 45 | #define XINET_ADDR FNS_INET_ADDR
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| 46 | #define XHTONS FNS_HTONS
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| 47 | #define XNTOHS FNS_NTOHS
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| 48 | #define XHTONL FNS_HTONL
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| 49 | #define XNTOHL FNS_NTOHL
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| 50 | #define XINADDR_NONE FNS_INADDR_NONE
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| 51 | #else
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| 52 | /* default */
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| 53 | #define XINET_NTOA inet_ntoa
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| 54 | #define XINET_ATON inet_aton
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| 55 | #define XINET_PTON(a,b,c) inet_pton((a),(b),(c))
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| 56 | #define XINET_NTOP inet_ntop
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| 57 | #define XINET_ADDR inet_addr
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| 58 | #define XHTONS htons
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| 59 | #define XNTOHS ntohs
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| 60 | #define XHTONL htonl
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| 61 | #define XNTOHL ntohl
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| 62 | #define XINADDR_NONE INADDR_NONE
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| 63 | #endif
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| 64 |
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| 65 | #if !defined(WOLFCRYPT_ONLY) && !defined(NO_FILESYSTEM)
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[457] | 66 | #ifdef WOLFSSL_SNIFFER
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| 67 |
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| 68 | #include <assert.h>
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| 69 | #include <time.h>
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| 70 |
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[464] | 71 | #ifdef FUSION_RTOS
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| 72 | #include <fns_inet.h>
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| 73 | #ifdef TCP_PROTOCOL
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| 74 | #undef TCP_PROTOCOL
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| 75 | #endif
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[457] | 76 | #else
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[464] | 77 | #ifndef _WIN32
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| 78 | #include <arpa/inet.h>
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| 79 | #else
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| 80 | #include <WS2tcpip.h>
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| 81 | #endif
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[457] | 82 | #endif
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| 83 |
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| 84 | #ifdef _WIN32
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| 85 | #define SNPRINTF _snprintf
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| 86 | #else
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| 87 | #define SNPRINTF snprintf
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| 88 | #endif
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| 89 |
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| 90 | #include <wolfssl/internal.h>
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| 91 | #include <wolfssl/error-ssl.h>
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| 92 | #include <wolfssl/sniffer.h>
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| 93 | #include <wolfssl/sniffer_error.h>
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| 94 | #ifdef NO_INLINE
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| 95 | #include <wolfssl/wolfcrypt/misc.h>
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| 96 | #else
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| 97 | #define WOLFSSL_MISC_INCLUDED
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| 98 | #include <wolfcrypt/src/misc.c>
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| 99 | #endif
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| 100 |
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| 101 | #ifdef WOLF_CRYPTO_CB
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| 102 | #include <wolfssl/wolfcrypt/cryptocb.h>
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| 103 | #ifdef HAVE_INTEL_QA_SYNC
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| 104 | #include <wolfssl/wolfcrypt/port/intel/quickassist_sync.h>
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| 105 | #endif
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| 106 | #ifdef HAVE_CAVIUM_OCTEON_SYNC
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| 107 | #include <wolfssl/wolfcrypt/port/cavium/cavium_octeon_sync.h>
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| 108 | #endif
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| 109 | #endif
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| 110 |
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| 111 |
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| 112 | #ifndef WOLFSSL_SNIFFER_TIMEOUT
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| 113 | #define WOLFSSL_SNIFFER_TIMEOUT 900
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| 114 | /* Cache unclosed Sessions for 15 minutes since last used */
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| 115 | #endif
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| 116 |
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| 117 | /* Misc constants */
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| 118 | enum {
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| 119 | MAX_SERVER_ADDRESS = 128, /* maximum server address length */
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| 120 | MAX_SERVER_NAME = 128, /* maximum server name length */
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| 121 | MAX_ERROR_LEN = 80, /* maximum error length */
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| 122 | ETHER_IF_ADDR_LEN = 6, /* ethernet interface address length */
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| 123 | LOCAL_IF_ADDR_LEN = 4, /* localhost interface address length, !windows */
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| 124 | TCP_PROTO = 6, /* TCP_PROTOCOL */
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| 125 | IP_HDR_SZ = 20, /* IPv4 header length, min */
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| 126 | IP6_HDR_SZ = 40, /* IPv6 header length, min */
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| 127 | TCP_HDR_SZ = 20, /* TCP header length, min */
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| 128 | IPV4 = 4, /* IP version 4 */
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| 129 | IPV6 = 6, /* IP version 6 */
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| 130 | TCP_PROTOCOL = 6, /* TCP Protocol id */
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| 131 | NO_NEXT_HEADER = 59, /* IPv6 no headers follow */
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| 132 | TRACE_MSG_SZ = 80, /* Trace Message buffer size */
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| 133 | HASH_SIZE = 499, /* Session Hash Table Rows */
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| 134 | PSEUDO_HDR_SZ = 12, /* TCP Pseudo Header size in bytes */
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[464] | 135 | FATAL_ERROR_STATE = 1, /* SnifferSession fatal error state */
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[457] | 136 | TICKET_HINT_LEN = 4, /* Session Ticket Hint length */
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[464] | 137 | TICKET_HINT_AGE_LEN= 4, /* Session Ticket Age add length */
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| 138 | EXT_TYPE_SZ = 2, /* Extension type length */
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[457] | 139 | MAX_INPUT_SZ = MAX_RECORD_SIZE + COMP_EXTRA + MAX_MSG_EXTRA +
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| 140 | MTU_EXTRA, /* Max input sz of reassembly */
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[464] | 141 |
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| 142 | /* TLS Extensions */
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| 143 | EXT_SERVER_NAME = 0x0000, /* a.k.a. SNI */
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| 144 | EXT_MAX_FRAGMENT_LENGTH = 0x0001,
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| 145 | EXT_TRUSTED_CA_KEYS = 0x0003,
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| 146 | EXT_TRUNCATED_HMAC = 0x0004,
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| 147 | EXT_STATUS_REQUEST = 0x0005, /* a.k.a. OCSP stapling */
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| 148 | EXT_SUPPORTED_GROUPS = 0x000a, /* a.k.a. Supported Curves */
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| 149 | EXT_EC_POINT_FORMATS = 0x000b,
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| 150 | EXT_SIGNATURE_ALGORITHMS = 0x000d,
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| 151 | EXT_APPLICATION_LAYER_PROTOCOL = 0x0010, /* a.k.a. ALPN */
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| 152 | EXT_STATUS_REQUEST_V2 = 0x0011, /* a.k.a. OCSP stapling v2 */
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| 153 | EXT_ENCRYPT_THEN_MAC = 0x0016, /* RFC 7366 */
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| 154 | EXT_MASTER_SECRET = 0x0017, /* Extended Master Secret Extension ID */
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| 155 | EXT_TICKET_ID = 0x0023, /* Session Ticket Extension ID */
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| 156 | EXT_PRE_SHARED_KEY = 0x0029,
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| 157 | EXT_EARLY_DATA = 0x002a,
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| 158 | EXT_SUPPORTED_VERSIONS = 0x002b,
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| 159 | EXT_COOKIE = 0x002c,
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| 160 | EXT_PSK_KEY_EXCHANGE_MODES = 0x002d,
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| 161 | EXT_POST_HANDSHAKE_AUTH = 0x0031,
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| 162 | EXT_SIGNATURE_ALGORITHMS_CERT = 0x0032,
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| 163 | EXT_KEY_SHARE = 0x0033,
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| 164 | EXT_RENEGOTIATION_INFO = 0xff01
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[457] | 165 | };
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| 166 |
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| 167 |
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| 168 | #ifdef _WIN32
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| 169 |
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| 170 | static HMODULE dllModule; /* for error string resources */
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| 171 |
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| 172 | BOOL APIENTRY DllMain( HMODULE hModule,
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| 173 | DWORD ul_reason_for_call,
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| 174 | LPVOID lpReserved
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| 175 | )
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| 176 | {
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| 177 | static int didInit = 0;
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| 178 |
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| 179 | switch (ul_reason_for_call)
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| 180 | {
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| 181 | case DLL_PROCESS_ATTACH:
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| 182 | if (didInit == 0) {
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| 183 | dllModule = hModule;
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| 184 | ssl_InitSniffer();
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| 185 | didInit = 1;
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| 186 | }
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| 187 | break;
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| 188 | case DLL_THREAD_ATTACH:
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| 189 | break;
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| 190 | case DLL_THREAD_DETACH:
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| 191 | break;
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| 192 | case DLL_PROCESS_DETACH:
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| 193 | if (didInit) {
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| 194 | ssl_FreeSniffer();
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| 195 | didInit = 0;
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| 196 | }
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| 197 | break;
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| 198 | }
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| 199 | return TRUE;
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| 200 | }
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| 201 |
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| 202 | #endif /* _WIN32 */
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| 203 |
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| 204 |
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| 205 | static WOLFSSL_GLOBAL int TraceOn = 0; /* Trace is off by default */
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[464] | 206 | static WOLFSSL_GLOBAL XFILE TraceFile = 0;
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[457] | 207 |
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| 208 |
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| 209 | /* windows uses .rc table for this */
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| 210 | #ifndef _WIN32
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| 211 |
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| 212 | static const char* const msgTable[] =
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| 213 | {
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| 214 | /* 1 */
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| 215 | "Out of Memory",
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| 216 | "New SSL Sniffer Server Registered",
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| 217 | "Checking IP Header",
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| 218 | "SSL Sniffer Server Not Registered",
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| 219 | "Checking TCP Header",
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| 220 |
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| 221 | /* 6 */
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| 222 | "SSL Sniffer Server Port Not Registered",
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| 223 | "RSA Private Decrypt Error",
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| 224 | "RSA Private Decode Error",
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| 225 | "Set Cipher Spec Error",
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| 226 | "Server Hello Input Malformed",
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| 227 |
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| 228 | /* 11 */
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| 229 | "Couldn't Resume Session Error",
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| 230 | "Server Did Resumption",
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| 231 | "Client Hello Input Malformed",
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| 232 | "Client Trying to Resume",
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| 233 | "Handshake Input Malformed",
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| 234 |
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| 235 | /* 16 */
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| 236 | "Got Hello Verify msg",
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| 237 | "Got Server Hello msg",
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| 238 | "Got Cert Request msg",
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| 239 | "Got Server Key Exchange msg",
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| 240 | "Got Cert msg",
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| 241 |
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| 242 | /* 21 */
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| 243 | "Got Server Hello Done msg",
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| 244 | "Got Finished msg",
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| 245 | "Got Client Hello msg",
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| 246 | "Got Client Key Exchange msg",
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| 247 | "Got Cert Verify msg",
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| 248 |
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| 249 | /* 26 */
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| 250 | "Got Unknown Handshake msg",
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| 251 | "New SSL Sniffer Session created",
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| 252 | "Couldn't create new SSL",
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| 253 | "Got a Packet to decode",
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| 254 | "No data present",
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| 255 |
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| 256 | /* 31 */
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| 257 | "Session Not Found",
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| 258 | "Got an Old Client Hello msg",
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| 259 | "Old Client Hello Input Malformed",
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| 260 | "Old Client Hello OK",
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| 261 | "Bad Old Client Hello",
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| 262 |
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| 263 | /* 36 */
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| 264 | "Bad Record Header",
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| 265 | "Record Header Input Malformed",
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| 266 | "Got a HandShake msg",
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| 267 | "Bad HandShake msg",
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| 268 | "Got a Change Cipher Spec msg",
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| 269 |
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| 270 | /* 41 */
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| 271 | "Got Application Data msg",
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| 272 | "Bad Application Data",
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| 273 | "Got an Alert msg",
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| 274 | "Another msg to Process",
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| 275 | "Removing Session From Table",
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| 276 |
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| 277 | /* 46 */
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| 278 | "Bad Key File",
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| 279 | "Wrong IP Version",
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| 280 | "Wrong Protocol type",
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| 281 | "Packet Short for header processing",
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| 282 | "Got Unknown Record Type",
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| 283 |
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| 284 | /* 51 */
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| 285 | "Can't Open Trace File",
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| 286 | "Session in Fatal Error State",
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| 287 | "Partial SSL record received",
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| 288 | "Buffer Error, malformed input",
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| 289 | "Added to Partial Input",
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| 290 |
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| 291 | /* 56 */
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| 292 | "Received a Duplicate Packet",
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| 293 | "Received an Out of Order Packet",
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| 294 | "Received an Overlap Duplicate Packet",
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| 295 | "Received an Overlap Reassembly Begin Duplicate Packet",
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| 296 | "Received an Overlap Reassembly End Duplicate Packet",
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| 297 |
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| 298 | /* 61 */
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| 299 | "Missed the Client Hello Entirely",
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| 300 | "Got Hello Request msg",
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| 301 | "Got Session Ticket msg",
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| 302 | "Bad Input",
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| 303 | "Bad Decrypt Type",
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| 304 |
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| 305 | /* 66 */
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| 306 | "Bad Finished Message Processing",
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| 307 | "Bad Compression Type",
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| 308 | "Bad DeriveKeys Error",
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| 309 | "Saw ACK for Missing Packet Error",
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| 310 | "Bad Decrypt Operation",
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| 311 |
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| 312 | /* 71 */
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| 313 | "Decrypt Keys Not Set Up",
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| 314 | "Late Key Load Error",
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| 315 | "Got Certificate Status msg",
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| 316 | "RSA Key Missing Error",
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| 317 | "Secure Renegotiation Not Supported",
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| 318 |
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| 319 | /* 76 */
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| 320 | "Get Session Stats Failure",
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| 321 | "Reassembly Buffer Size Exceeded",
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| 322 | "Dropping Lost Fragment",
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| 323 | "Dropping Partial Record",
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| 324 | "Clear ACK Fault",
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| 325 |
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| 326 | /* 81 */
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| 327 | "Bad Decrypt Size",
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| 328 | "Extended Master Secret Hash Error",
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| 329 | "Handshake Message Split Across TLS Records",
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| 330 | "ECC Private Decode Error",
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| 331 | "ECC Public Decode Error",
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| 332 |
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| 333 | /* 86 */
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| 334 | "Watch callback not set",
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| 335 | "Watch hash failed",
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| 336 | "Watch callback failed",
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| 337 | "Bad Certificate Message",
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| 338 | "Store data callback not set",
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| 339 |
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| 340 | /* 91 */
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| 341 | "No data destination Error",
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| 342 | "Store data callback failed",
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[464] | 343 | "Loading chain input",
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| 344 | "Got encrypted extension",
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| 345 | "Got Hello Retry Request",
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[457] | 346 | };
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| 347 |
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| 348 |
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| 349 | /* *nix version uses table above */
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| 350 | static void GetError(int idx, char* str)
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| 351 | {
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| 352 | XSTRNCPY(str, msgTable[idx - 1], MAX_ERROR_LEN-1);
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| 353 | str[MAX_ERROR_LEN-1] = '\0';
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| 354 | }
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| 355 |
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| 356 |
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| 357 | #else /* _WIN32 */
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| 358 |
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| 359 |
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| 360 | /* Windows version uses .rc table */
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| 361 | static void GetError(int idx, char* buffer)
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| 362 | {
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| 363 | if (!LoadStringA(dllModule, idx, buffer, MAX_ERROR_LEN))
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| 364 | buffer[0] = 0;
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| 365 | }
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| 366 |
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| 367 |
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| 368 | #endif /* _WIN32 */
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| 369 |
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| 370 |
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| 371 | /* Packet Buffer for reassembly list and ready list */
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| 372 | typedef struct PacketBuffer {
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| 373 | word32 begin; /* relative sequence begin */
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| 374 | word32 end; /* relative sequence end */
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| 375 | byte* data; /* actual data */
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| 376 | struct PacketBuffer* next; /* next on reassembly list or ready list */
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| 377 | } PacketBuffer;
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| 378 |
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| 379 |
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| 380 | #ifdef HAVE_SNI
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| 381 |
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| 382 | /* NamedKey maps a SNI name to a specific private key */
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| 383 | typedef struct NamedKey {
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| 384 | char name[MAX_SERVER_NAME]; /* server DNS name */
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| 385 | word32 nameSz; /* size of server DNS name */
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| 386 | byte* key; /* DER private key */
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| 387 | word32 keySz; /* size of DER private key */
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[464] | 388 | int isEphemeralKey;
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[457] | 389 | struct NamedKey* next; /* for list */
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| 390 | } NamedKey;
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| 391 |
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| 392 | #endif
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| 393 |
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| 394 |
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| 395 | typedef struct IpAddrInfo {
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| 396 | int version;
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| 397 | union {
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| 398 | word32 ip4;
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| 399 | byte ip6[16];
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| 400 | };
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| 401 | } IpAddrInfo;
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| 402 |
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| 403 |
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| 404 | /* Sniffer Server holds info for each server/port monitored */
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| 405 | typedef struct SnifferServer {
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[464] | 406 | WOLFSSL_CTX* ctx; /* SSL context */
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[457] | 407 | char address[MAX_SERVER_ADDRESS]; /* passed in server address */
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| 408 | IpAddrInfo server; /* network order address */
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| 409 | int port; /* server port */
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| 410 | #ifdef HAVE_SNI
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| 411 | NamedKey* namedKeys; /* mapping of names and keys */
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| 412 | wolfSSL_Mutex namedKeysMutex; /* mutex for namedKey list */
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| 413 | #endif
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| 414 | struct SnifferServer* next; /* for list */
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| 415 | } SnifferServer;
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| 416 |
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| 417 |
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| 418 | /* Session Flags */
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| 419 | typedef struct Flags {
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| 420 | byte side; /* which end is current packet headed */
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| 421 | byte serverCipherOn; /* indicates whether cipher is active */
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| 422 | byte clientCipherOn; /* indicates whether cipher is active */
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| 423 | byte resuming; /* did this session come from resumption */
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| 424 | byte cached; /* have we cached this session yet */
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| 425 | byte clientHello; /* processed client hello yet, for SSLv2 */
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| 426 | byte finCount; /* get both FINs before removing */
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| 427 | byte fatalError; /* fatal error state */
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| 428 | byte cliAckFault; /* client acked unseen data from server */
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| 429 | byte srvAckFault; /* server acked unseen data from client */
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| 430 | byte cliSkipPartial; /* client skips partial data to catch up */
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| 431 | byte srvSkipPartial; /* server skips partial data to catch up */
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| 432 | #ifdef HAVE_EXTENDED_MASTER
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| 433 | byte expectEms; /* expect extended master secret */
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| 434 | #endif
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[464] | 435 | byte gotFinished; /* processed finished */
|
---|
[457] | 436 | } Flags;
|
---|
| 437 |
|
---|
| 438 |
|
---|
| 439 | /* Out of Order FIN capture */
|
---|
[464] | 440 | typedef struct FinCapture {
|
---|
[457] | 441 | word32 cliFinSeq; /* client relative sequence FIN 0 is no */
|
---|
| 442 | word32 srvFinSeq; /* server relative sequence FIN, 0 is no */
|
---|
| 443 | byte cliCounted; /* did we count yet, detects duplicates */
|
---|
| 444 | byte srvCounted; /* did we count yet, detects duplicates */
|
---|
[464] | 445 | } FinCapture;
|
---|
[457] | 446 |
|
---|
| 447 |
|
---|
| 448 | typedef struct HsHashes {
|
---|
| 449 | #ifndef NO_OLD_TLS
|
---|
| 450 | #ifndef NO_SHA
|
---|
| 451 | wc_Sha hashSha;
|
---|
| 452 | #endif
|
---|
| 453 | #ifndef NO_MD5
|
---|
| 454 | wc_Md5 hashMd5;
|
---|
| 455 | #endif
|
---|
[464] | 456 | #endif /* !NO_OLD_TLS */
|
---|
[457] | 457 | #ifndef NO_SHA256
|
---|
| 458 | wc_Sha256 hashSha256;
|
---|
| 459 | #endif
|
---|
| 460 | #ifdef WOLFSSL_SHA384
|
---|
| 461 | wc_Sha384 hashSha384;
|
---|
| 462 | #endif
|
---|
| 463 | } HsHashes;
|
---|
| 464 |
|
---|
[464] | 465 | typedef struct KeyShareInfo {
|
---|
| 466 | word16 named_group;
|
---|
| 467 | int key_len;
|
---|
| 468 | const byte* key;
|
---|
[457] | 469 |
|
---|
[464] | 470 | /* additional info */
|
---|
| 471 | int dh_key_bits;
|
---|
| 472 | int curve_id;
|
---|
| 473 | } KeyShareInfo;
|
---|
| 474 |
|
---|
| 475 |
|
---|
[457] | 476 | /* Sniffer Session holds info for each client/server SSL/TLS session */
|
---|
| 477 | typedef struct SnifferSession {
|
---|
| 478 | SnifferServer* context; /* server context */
|
---|
[464] | 479 | WOLFSSL* sslServer; /* SSL server side decode */
|
---|
| 480 | WOLFSSL* sslClient; /* SSL client side decode */
|
---|
[457] | 481 | IpAddrInfo server; /* server address in network byte order */
|
---|
| 482 | IpAddrInfo client; /* client address in network byte order */
|
---|
| 483 | word16 srvPort; /* server port */
|
---|
| 484 | word16 cliPort; /* client port */
|
---|
| 485 | word32 cliSeqStart; /* client start sequence */
|
---|
| 486 | word32 srvSeqStart; /* server start sequence */
|
---|
| 487 | word32 cliExpected; /* client expected sequence (relative) */
|
---|
| 488 | word32 srvExpected; /* server expected sequence (relative) */
|
---|
[464] | 489 | FinCapture finCapture; /* retain out of order FIN s */
|
---|
[457] | 490 | Flags flags; /* session flags */
|
---|
[464] | 491 | time_t lastUsed; /* last used ticks */
|
---|
[457] | 492 | word32 keySz; /* size of the private key */
|
---|
| 493 | PacketBuffer* cliReassemblyList; /* client out of order packets */
|
---|
| 494 | PacketBuffer* srvReassemblyList; /* server out of order packets */
|
---|
| 495 | word32 cliReassemblyMemory; /* client packet memory used */
|
---|
| 496 | word32 srvReassemblyMemory; /* server packet memory used */
|
---|
[464] | 497 | struct SnifferSession* next; /* for hash table list */
|
---|
| 498 | byte* ticketID; /* mac ID of session ticket */
|
---|
| 499 | #ifdef HAVE_MAX_FRAGMENT
|
---|
| 500 | byte* tlsFragBuf;
|
---|
| 501 | word32 tlsFragOffset;
|
---|
| 502 | word32 tlsFragSize;
|
---|
| 503 | #endif
|
---|
[457] | 504 | #ifdef HAVE_SNI
|
---|
| 505 | const char* sni; /* server name indication */
|
---|
| 506 | #endif
|
---|
| 507 | #ifdef HAVE_EXTENDED_MASTER
|
---|
[464] | 508 | HsHashes* hash;
|
---|
[457] | 509 | #endif
|
---|
[464] | 510 | #ifdef WOLFSSL_TLS13
|
---|
| 511 | byte* cliKeyShare;
|
---|
| 512 | word32 cliKeyShareSz;
|
---|
| 513 | KeyShareInfo srvKs;
|
---|
| 514 | KeyShareInfo cliKs;
|
---|
| 515 | #endif
|
---|
[457] | 516 | } SnifferSession;
|
---|
| 517 |
|
---|
| 518 |
|
---|
| 519 | /* Sniffer Server List and mutex */
|
---|
| 520 | static WOLFSSL_GLOBAL SnifferServer* ServerList = 0;
|
---|
| 521 | static WOLFSSL_GLOBAL wolfSSL_Mutex ServerListMutex;
|
---|
| 522 |
|
---|
| 523 |
|
---|
| 524 | /* Session Hash Table, mutex, and count */
|
---|
| 525 | static WOLFSSL_GLOBAL SnifferSession* SessionTable[HASH_SIZE];
|
---|
| 526 | static WOLFSSL_GLOBAL wolfSSL_Mutex SessionMutex;
|
---|
| 527 | static WOLFSSL_GLOBAL int SessionCount = 0;
|
---|
| 528 |
|
---|
| 529 | /* Recovery of missed data switches and stats */
|
---|
| 530 | static WOLFSSL_GLOBAL wolfSSL_Mutex RecoveryMutex; /* for stats */
|
---|
| 531 | static WOLFSSL_GLOBAL int RecoveryEnabled = 0; /* global switch */
|
---|
| 532 | static WOLFSSL_GLOBAL int MaxRecoveryMemory = -1;
|
---|
| 533 | /* per session max recovery memory */
|
---|
| 534 | static WOLFSSL_GLOBAL word32 MissedDataSessions = 0;
|
---|
| 535 | /* # of sessions with missed data */
|
---|
| 536 |
|
---|
| 537 | /* Connection Info Callback */
|
---|
| 538 | static WOLFSSL_GLOBAL SSLConnCb ConnectionCb;
|
---|
| 539 | static WOLFSSL_GLOBAL void* ConnectionCbCtx = NULL;
|
---|
| 540 |
|
---|
| 541 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 542 | /* Sessions Statistics */
|
---|
| 543 | static WOLFSSL_GLOBAL SSLStats SnifferStats;
|
---|
| 544 | static WOLFSSL_GLOBAL wolfSSL_Mutex StatsMutex;
|
---|
| 545 | #endif
|
---|
| 546 |
|
---|
| 547 | #ifdef WOLFSSL_SNIFFER_WATCH
|
---|
| 548 | /* Watch Key Callback */
|
---|
| 549 | static WOLFSSL_GLOBAL SSLWatchCb WatchCb;
|
---|
| 550 | static WOLFSSL_GLOBAL void* WatchCbCtx = NULL;
|
---|
| 551 | #endif
|
---|
| 552 |
|
---|
| 553 | #ifdef WOLFSSL_SNIFFER_STORE_DATA_CB
|
---|
| 554 | /* Store Data Callback */
|
---|
| 555 | static WOLFSSL_GLOBAL SSLStoreDataCb StoreDataCb;
|
---|
| 556 | #endif
|
---|
| 557 |
|
---|
| 558 |
|
---|
| 559 | static void UpdateMissedDataSessions(void)
|
---|
| 560 | {
|
---|
| 561 | wc_LockMutex(&RecoveryMutex);
|
---|
| 562 | MissedDataSessions += 1;
|
---|
| 563 | wc_UnLockMutex(&RecoveryMutex);
|
---|
| 564 | }
|
---|
| 565 |
|
---|
| 566 |
|
---|
| 567 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 568 | #define LOCK_STAT() do { wc_LockMutex(&StatsMutex); } while (0)
|
---|
| 569 | #define UNLOCK_STAT() do { wc_UnLockMutex(&StatsMutex); } while (0)
|
---|
| 570 | #define NOLOCK_ADD_TO_STAT(x,y) do { TraceStat(#x, y); x += y; } while (0)
|
---|
| 571 | #define NOLOCK_INC_STAT(x) NOLOCK_ADD_TO_STAT(x,1)
|
---|
| 572 | #define ADD_TO_STAT(x,y) do { LOCK_STAT(); \
|
---|
| 573 | NOLOCK_ADD_TO_STAT(x,y); UNLOCK_STAT(); } while (0)
|
---|
| 574 | #define INC_STAT(x) do { LOCK_STAT(); \
|
---|
| 575 | NOLOCK_INC_STAT(x); UNLOCK_STAT(); } while (0)
|
---|
| 576 | #endif
|
---|
| 577 |
|
---|
| 578 |
|
---|
| 579 | #ifdef WOLF_CRYPTO_CB
|
---|
| 580 | static WOLFSSL_GLOBAL int CryptoDeviceId = INVALID_DEVID;
|
---|
| 581 | #endif
|
---|
| 582 |
|
---|
| 583 |
|
---|
| 584 | /* Initialize overall Sniffer */
|
---|
| 585 | void ssl_InitSniffer(void)
|
---|
| 586 | {
|
---|
| 587 | wolfSSL_Init();
|
---|
| 588 | wc_InitMutex(&ServerListMutex);
|
---|
| 589 | wc_InitMutex(&SessionMutex);
|
---|
| 590 | wc_InitMutex(&RecoveryMutex);
|
---|
| 591 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 592 | XMEMSET(&SnifferStats, 0, sizeof(SSLStats));
|
---|
| 593 | wc_InitMutex(&StatsMutex);
|
---|
| 594 | #endif
|
---|
| 595 | #ifdef WOLF_CRYPTO_CB
|
---|
| 596 | #ifdef HAVE_INTEL_QA_SYNC
|
---|
| 597 | CryptoDeviceId = wc_CryptoCb_InitIntelQa();
|
---|
| 598 | if (INVALID_DEVID == CryptoDeviceId) {
|
---|
| 599 | printf("Couldn't init the Intel QA\n");
|
---|
| 600 | }
|
---|
| 601 | #endif
|
---|
| 602 | #ifdef HAVE_CAVIUM_OCTEON_SYNC
|
---|
| 603 | CryptoDeviceId = wc_CryptoCb_InitOcteon();
|
---|
| 604 | if (INVALID_DEVID == CryptoDeviceId) {
|
---|
| 605 | printf("Couldn't init the Intel QA\n");
|
---|
| 606 | }
|
---|
| 607 | #endif
|
---|
| 608 | #endif
|
---|
| 609 | }
|
---|
| 610 |
|
---|
| 611 |
|
---|
| 612 | #ifdef HAVE_SNI
|
---|
| 613 |
|
---|
| 614 | /* Free Named Key and the zero out the private key it holds */
|
---|
| 615 | static void FreeNamedKey(NamedKey* in)
|
---|
| 616 | {
|
---|
| 617 | if (in) {
|
---|
| 618 | if (in->key) {
|
---|
| 619 | ForceZero(in->key, in->keySz);
|
---|
| 620 | XFREE(in->key, NULL, DYNAMIC_TYPE_X509);
|
---|
| 621 | }
|
---|
| 622 | XFREE(in, NULL, DYNAMIC_TYPE_SNIFFER_NAMED_KEY);
|
---|
| 623 | }
|
---|
| 624 | }
|
---|
| 625 |
|
---|
| 626 |
|
---|
| 627 | static void FreeNamedKeyList(NamedKey* in)
|
---|
| 628 | {
|
---|
| 629 | NamedKey* next;
|
---|
| 630 |
|
---|
| 631 | while (in) {
|
---|
| 632 | next = in->next;
|
---|
| 633 | FreeNamedKey(in);
|
---|
| 634 | in = next;
|
---|
| 635 | }
|
---|
| 636 | }
|
---|
| 637 |
|
---|
| 638 | #endif
|
---|
| 639 |
|
---|
| 640 |
|
---|
| 641 | /* Free Sniffer Server's resources/self */
|
---|
| 642 | static void FreeSnifferServer(SnifferServer* srv)
|
---|
| 643 | {
|
---|
| 644 | if (srv) {
|
---|
| 645 | #ifdef HAVE_SNI
|
---|
| 646 | wc_LockMutex(&srv->namedKeysMutex);
|
---|
| 647 | FreeNamedKeyList(srv->namedKeys);
|
---|
| 648 | wc_UnLockMutex(&srv->namedKeysMutex);
|
---|
| 649 | wc_FreeMutex(&srv->namedKeysMutex);
|
---|
| 650 | #endif
|
---|
[464] | 651 | wolfSSL_CTX_free(srv->ctx);
|
---|
[457] | 652 | }
|
---|
| 653 | XFREE(srv, NULL, DYNAMIC_TYPE_SNIFFER_SERVER);
|
---|
| 654 | }
|
---|
| 655 |
|
---|
| 656 |
|
---|
| 657 | /* free PacketBuffer's resources/self */
|
---|
| 658 | static void FreePacketBuffer(PacketBuffer* del)
|
---|
| 659 | {
|
---|
| 660 | if (del) {
|
---|
| 661 | XFREE(del->data, NULL, DYNAMIC_TYPE_SNIFFER_PB_BUFFER);
|
---|
| 662 | XFREE(del, NULL, DYNAMIC_TYPE_SNIFFER_PB);
|
---|
| 663 | }
|
---|
| 664 | }
|
---|
| 665 |
|
---|
| 666 |
|
---|
| 667 | /* remove PacketBuffer List */
|
---|
| 668 | static void FreePacketList(PacketBuffer* in)
|
---|
| 669 | {
|
---|
| 670 | if (in) {
|
---|
| 671 | PacketBuffer* del;
|
---|
| 672 | PacketBuffer* packet = in;
|
---|
| 673 |
|
---|
| 674 | while (packet) {
|
---|
| 675 | del = packet;
|
---|
| 676 | packet = packet->next;
|
---|
| 677 | FreePacketBuffer(del);
|
---|
| 678 | }
|
---|
| 679 | }
|
---|
| 680 | }
|
---|
| 681 |
|
---|
| 682 |
|
---|
| 683 | /* Free Sniffer Session's resources/self */
|
---|
| 684 | static void FreeSnifferSession(SnifferSession* session)
|
---|
| 685 | {
|
---|
| 686 | if (session) {
|
---|
[464] | 687 | wolfSSL_free(session->sslClient);
|
---|
| 688 | wolfSSL_free(session->sslServer);
|
---|
[457] | 689 |
|
---|
| 690 | FreePacketList(session->cliReassemblyList);
|
---|
| 691 | FreePacketList(session->srvReassemblyList);
|
---|
| 692 |
|
---|
| 693 | XFREE(session->ticketID, NULL, DYNAMIC_TYPE_SNIFFER_TICKET_ID);
|
---|
| 694 | #ifdef HAVE_EXTENDED_MASTER
|
---|
| 695 | XFREE(session->hash, NULL, DYNAMIC_TYPE_HASHES);
|
---|
| 696 | #endif
|
---|
[464] | 697 | #ifdef WOLFSSL_TLS13
|
---|
| 698 | if (session->cliKeyShare)
|
---|
| 699 | XFREE(session->cliKeyShare, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
---|
| 700 | #endif
|
---|
| 701 | #ifdef HAVE_MAX_FRAGMENT
|
---|
| 702 | if (session->tlsFragBuf) {
|
---|
| 703 | XFREE(session->tlsFragBuf, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
---|
| 704 | session->tlsFragBuf = NULL;
|
---|
| 705 | }
|
---|
| 706 | #endif
|
---|
[457] | 707 | }
|
---|
| 708 | XFREE(session, NULL, DYNAMIC_TYPE_SNIFFER_SESSION);
|
---|
| 709 | }
|
---|
| 710 |
|
---|
| 711 |
|
---|
| 712 | /* Free overall Sniffer */
|
---|
| 713 | void ssl_FreeSniffer(void)
|
---|
| 714 | {
|
---|
| 715 | SnifferServer* srv;
|
---|
| 716 | SnifferServer* removeServer;
|
---|
| 717 | SnifferSession* session;
|
---|
| 718 | SnifferSession* removeSession;
|
---|
| 719 | int i;
|
---|
| 720 |
|
---|
| 721 | wc_LockMutex(&ServerListMutex);
|
---|
| 722 | wc_LockMutex(&SessionMutex);
|
---|
| 723 |
|
---|
[464] | 724 | /* Free sessions (wolfSSL objects) first */
|
---|
[457] | 725 | for (i = 0; i < HASH_SIZE; i++) {
|
---|
| 726 | session = SessionTable[i];
|
---|
| 727 | while (session) {
|
---|
| 728 | removeSession = session;
|
---|
| 729 | session = session->next;
|
---|
| 730 | FreeSnifferSession(removeSession);
|
---|
| 731 | }
|
---|
| 732 | }
|
---|
[464] | 733 | SessionCount = 0;
|
---|
[457] | 734 |
|
---|
[464] | 735 | /* Then server (wolfSSL_CTX) */
|
---|
| 736 | srv = ServerList;
|
---|
| 737 | while (srv) {
|
---|
| 738 | removeServer = srv;
|
---|
| 739 | srv = srv->next;
|
---|
| 740 | FreeSnifferServer(removeServer);
|
---|
| 741 | }
|
---|
| 742 | ServerList = NULL;
|
---|
| 743 |
|
---|
[457] | 744 | wc_UnLockMutex(&SessionMutex);
|
---|
| 745 | wc_UnLockMutex(&ServerListMutex);
|
---|
| 746 |
|
---|
| 747 | wc_FreeMutex(&RecoveryMutex);
|
---|
| 748 | wc_FreeMutex(&SessionMutex);
|
---|
| 749 | wc_FreeMutex(&ServerListMutex);
|
---|
| 750 |
|
---|
| 751 | #ifdef WOLF_CRYPTO_CB
|
---|
| 752 | #ifdef HAVE_INTEL_QA_SYNC
|
---|
| 753 | wc_CryptoCb_CleanupIntelQa(&CryptoDeviceId);
|
---|
| 754 | #endif
|
---|
| 755 | #ifdef HAVE_CAVIUM_OCTEON_SYNC
|
---|
| 756 | wc_CryptoCb_CleanupOcteon(&CryptoDeviceId);
|
---|
| 757 | #endif
|
---|
| 758 | #endif
|
---|
| 759 |
|
---|
| 760 | if (TraceFile) {
|
---|
| 761 | TraceOn = 0;
|
---|
[464] | 762 | XFCLOSE(TraceFile);
|
---|
[457] | 763 | TraceFile = NULL;
|
---|
| 764 | }
|
---|
| 765 |
|
---|
| 766 | wolfSSL_Cleanup();
|
---|
| 767 | }
|
---|
| 768 |
|
---|
| 769 |
|
---|
| 770 | #ifdef HAVE_EXTENDED_MASTER
|
---|
| 771 |
|
---|
| 772 | static int HashInit(HsHashes* hash)
|
---|
| 773 | {
|
---|
| 774 | int ret = 0;
|
---|
| 775 |
|
---|
| 776 | XMEMSET(hash, 0, sizeof(HsHashes));
|
---|
| 777 |
|
---|
| 778 | #ifndef NO_OLD_TLS
|
---|
| 779 | #ifndef NO_SHA
|
---|
| 780 | if (ret == 0)
|
---|
| 781 | ret = wc_InitSha(&hash->hashSha);
|
---|
| 782 | #endif
|
---|
| 783 | #ifndef NO_MD5
|
---|
[464] | 784 | if (ret == 0)
|
---|
[457] | 785 | ret = wc_InitMd5(&hash->hashMd5);
|
---|
| 786 | #endif
|
---|
[464] | 787 | #endif /* !NO_OLD_TLS */
|
---|
[457] | 788 | #ifndef NO_SHA256
|
---|
| 789 | if (ret == 0)
|
---|
| 790 | ret = wc_InitSha256(&hash->hashSha256);
|
---|
| 791 | #endif
|
---|
| 792 | #ifdef WOLFSSL_SHA384
|
---|
| 793 | if (ret == 0)
|
---|
| 794 | ret = wc_InitSha384(&hash->hashSha384);
|
---|
| 795 | #endif
|
---|
| 796 |
|
---|
| 797 | return ret;
|
---|
| 798 | }
|
---|
| 799 |
|
---|
| 800 | static int HashUpdate(HsHashes* hash, const byte* input, int sz)
|
---|
| 801 | {
|
---|
| 802 | int ret = 0;
|
---|
| 803 |
|
---|
| 804 | input -= HANDSHAKE_HEADER_SZ;
|
---|
| 805 | sz += HANDSHAKE_HEADER_SZ;
|
---|
| 806 |
|
---|
| 807 | #ifndef NO_OLD_TLS
|
---|
| 808 | #ifndef NO_SHA
|
---|
| 809 | if (ret == 0)
|
---|
| 810 | ret = wc_ShaUpdate(&hash->hashSha, input, sz);
|
---|
| 811 | #endif
|
---|
| 812 | #ifndef NO_MD5
|
---|
[464] | 813 | if (ret == 0)
|
---|
[457] | 814 | ret = wc_Md5Update(&hash->hashMd5, input, sz);
|
---|
| 815 | #endif
|
---|
[464] | 816 | #endif /* !NO_OLD_TLS */
|
---|
[457] | 817 | #ifndef NO_SHA256
|
---|
| 818 | if (ret == 0)
|
---|
| 819 | ret = wc_Sha256Update(&hash->hashSha256, input, sz);
|
---|
| 820 | #endif
|
---|
| 821 | #ifdef WOLFSSL_SHA384
|
---|
| 822 | if (ret == 0)
|
---|
| 823 | ret = wc_Sha384Update(&hash->hashSha384, input, sz);
|
---|
| 824 | #endif
|
---|
| 825 |
|
---|
| 826 | return ret;
|
---|
| 827 | }
|
---|
| 828 |
|
---|
| 829 | static int HashCopy(HS_Hashes* d, HsHashes* s)
|
---|
| 830 | {
|
---|
| 831 | #ifndef NO_OLD_TLS
|
---|
| 832 | #ifndef NO_SHA
|
---|
[464] | 833 | XMEMCPY(&d->hashSha, &s->hashSha, sizeof(wc_Sha));
|
---|
[457] | 834 | #endif
|
---|
| 835 | #ifndef NO_MD5
|
---|
[464] | 836 | XMEMCPY(&d->hashMd5, &s->hashMd5, sizeof(wc_Md5));
|
---|
[457] | 837 | #endif
|
---|
[464] | 838 | #endif /* !NO_OLD_TLS */
|
---|
[457] | 839 | #ifndef NO_SHA256
|
---|
[464] | 840 | XMEMCPY(&d->hashSha256, &s->hashSha256, sizeof(wc_Sha256));
|
---|
[457] | 841 | #endif
|
---|
| 842 | #ifdef WOLFSSL_SHA384
|
---|
[464] | 843 | XMEMCPY(&d->hashSha384, &s->hashSha384, sizeof(wc_Sha384));
|
---|
[457] | 844 | #endif
|
---|
| 845 |
|
---|
| 846 | return 0;
|
---|
| 847 | }
|
---|
| 848 |
|
---|
| 849 | #endif
|
---|
| 850 |
|
---|
| 851 |
|
---|
| 852 | /* Initialize a SnifferServer */
|
---|
| 853 | static void InitSnifferServer(SnifferServer* sniffer)
|
---|
| 854 | {
|
---|
| 855 | XMEMSET(sniffer, 0, sizeof(SnifferServer));
|
---|
| 856 | }
|
---|
| 857 |
|
---|
| 858 |
|
---|
| 859 | /* Initialize session flags */
|
---|
| 860 | static void InitFlags(Flags* flags)
|
---|
| 861 | {
|
---|
| 862 | XMEMSET(flags, 0, sizeof(Flags));
|
---|
| 863 | }
|
---|
| 864 |
|
---|
| 865 |
|
---|
| 866 | /* Initialize FIN Capture */
|
---|
[464] | 867 | static void InitFinCapture(FinCapture* cap)
|
---|
[457] | 868 | {
|
---|
[464] | 869 | XMEMSET(cap, 0, sizeof(FinCapture));
|
---|
[457] | 870 | }
|
---|
| 871 |
|
---|
| 872 |
|
---|
| 873 | /* Initialize a Sniffer Session */
|
---|
| 874 | static void InitSession(SnifferSession* session)
|
---|
| 875 | {
|
---|
| 876 | XMEMSET(session, 0, sizeof(SnifferSession));
|
---|
| 877 | InitFlags(&session->flags);
|
---|
[464] | 878 | InitFinCapture(&session->finCapture);
|
---|
[457] | 879 | }
|
---|
| 880 |
|
---|
| 881 |
|
---|
| 882 | /* IP Info from IP Header */
|
---|
| 883 | typedef struct IpInfo {
|
---|
| 884 | int length; /* length of this header */
|
---|
| 885 | int total; /* total length of fragment */
|
---|
| 886 | IpAddrInfo src; /* network order source address */
|
---|
| 887 | IpAddrInfo dst; /* network order destination address */
|
---|
| 888 | } IpInfo;
|
---|
| 889 |
|
---|
| 890 |
|
---|
| 891 | /* TCP Info from TCP Header */
|
---|
| 892 | typedef struct TcpInfo {
|
---|
| 893 | int srcPort; /* source port */
|
---|
| 894 | int dstPort; /* source port */
|
---|
| 895 | int length; /* length of this header */
|
---|
| 896 | word32 sequence; /* sequence number */
|
---|
| 897 | word32 ackNumber; /* ack number */
|
---|
| 898 | byte fin; /* FIN set */
|
---|
| 899 | byte rst; /* RST set */
|
---|
| 900 | byte syn; /* SYN set */
|
---|
| 901 | byte ack; /* ACK set */
|
---|
| 902 | } TcpInfo;
|
---|
| 903 |
|
---|
| 904 |
|
---|
| 905 | /* Tcp Pseudo Header for Checksum calculation */
|
---|
| 906 | typedef struct TcpPseudoHdr {
|
---|
| 907 | word32 src; /* source address */
|
---|
| 908 | word32 dst; /* destination address */
|
---|
| 909 | byte rsv; /* reserved, always 0 */
|
---|
| 910 | byte protocol; /* IP protocol */
|
---|
| 911 | word16 length; /* tcp header length + data length (doesn't include */
|
---|
| 912 | /* pseudo header length) network order */
|
---|
| 913 | } TcpPseudoHdr;
|
---|
| 914 |
|
---|
| 915 |
|
---|
| 916 | /* Password Setting Callback */
|
---|
| 917 | static int SetPassword(char* passwd, int sz, int rw, void* userdata)
|
---|
| 918 | {
|
---|
| 919 | (void)rw;
|
---|
| 920 | XSTRNCPY(passwd, (const char*)userdata, sz);
|
---|
| 921 | return (int)XSTRLEN((const char*)userdata);
|
---|
| 922 | }
|
---|
| 923 |
|
---|
| 924 |
|
---|
| 925 | /* Ethernet Header */
|
---|
| 926 | typedef struct EthernetHdr {
|
---|
| 927 | byte dst[ETHER_IF_ADDR_LEN]; /* destination host address */
|
---|
| 928 | byte src[ETHER_IF_ADDR_LEN]; /* source host address */
|
---|
| 929 | word16 type; /* IP, ARP, etc */
|
---|
| 930 | } EthernetHdr;
|
---|
| 931 |
|
---|
| 932 |
|
---|
| 933 | /* IPv4 Header */
|
---|
| 934 | typedef struct IpHdr {
|
---|
| 935 | byte ver_hl; /* version/header length */
|
---|
| 936 | byte tos; /* type of service */
|
---|
| 937 | word16 length; /* total length */
|
---|
| 938 | word16 id; /* identification */
|
---|
| 939 | word16 offset; /* fragment offset field */
|
---|
| 940 | byte ttl; /* time to live */
|
---|
| 941 | byte protocol; /* protocol */
|
---|
| 942 | word16 sum; /* checksum */
|
---|
| 943 | word32 src; /* source address */
|
---|
| 944 | word32 dst; /* destination address */
|
---|
| 945 | } IpHdr;
|
---|
| 946 |
|
---|
| 947 |
|
---|
| 948 | /* IPv6 Header */
|
---|
| 949 | typedef struct Ip6Hdr {
|
---|
| 950 | byte ver_hl; /* version/traffic class high */
|
---|
| 951 | byte tc_fl; /* traffic class low/flow label high */
|
---|
| 952 | word16 fl; /* flow label low */
|
---|
| 953 | word16 length; /* payload length */
|
---|
| 954 | byte next_header; /* next header (6 for TCP, any other skip) */
|
---|
| 955 | byte hl; /* hop limit */
|
---|
| 956 | byte src[16]; /* source address */
|
---|
| 957 | byte dst[16]; /* destination address */
|
---|
| 958 | } Ip6Hdr;
|
---|
| 959 |
|
---|
| 960 |
|
---|
| 961 | /* IPv6 extension header */
|
---|
| 962 | typedef struct Ip6ExtHdr {
|
---|
| 963 | byte next_header; /* next header (6 for TCP, any other skip) */
|
---|
| 964 | byte length; /* length in 8-octet units - 1 */
|
---|
| 965 | byte reserved[6];
|
---|
| 966 | } Ip6ExtHdr;
|
---|
| 967 |
|
---|
| 968 |
|
---|
| 969 | #define IP_HL(ip) ( (((ip)->ver_hl) & 0x0f) * 4)
|
---|
| 970 | #define IP_V(ip) ( ((ip)->ver_hl) >> 4)
|
---|
| 971 |
|
---|
| 972 | /* TCP Header */
|
---|
| 973 | typedef struct TcpHdr {
|
---|
| 974 | word16 srcPort; /* source port */
|
---|
| 975 | word16 dstPort; /* destination port */
|
---|
| 976 | word32 sequence; /* sequence number */
|
---|
| 977 | word32 ack; /* acknowledgment number */
|
---|
| 978 | byte offset; /* data offset, reserved */
|
---|
| 979 | byte flags; /* option flags */
|
---|
| 980 | word16 window; /* window */
|
---|
| 981 | word16 sum; /* checksum */
|
---|
| 982 | word16 urgent; /* urgent pointer */
|
---|
| 983 | } TcpHdr;
|
---|
| 984 |
|
---|
| 985 | #define TCP_LEN(tcp) ( (((tcp)->offset & 0xf0) >> 4) * 4)
|
---|
| 986 | #define TCP_FIN 0x01
|
---|
| 987 | #define TCP_SYN 0x02
|
---|
| 988 | #define TCP_RST 0x04
|
---|
| 989 | #define TCP_ACK 0x10
|
---|
| 990 |
|
---|
| 991 |
|
---|
| 992 |
|
---|
| 993 |
|
---|
| 994 |
|
---|
| 995 | /* Use platform specific GetError to write to trace file if tracing */
|
---|
| 996 | static void Trace(int idx)
|
---|
| 997 | {
|
---|
| 998 | if (TraceOn) {
|
---|
| 999 | char myBuffer[MAX_ERROR_LEN];
|
---|
| 1000 | GetError(idx, myBuffer);
|
---|
[464] | 1001 | XFPRINTF(TraceFile, "\t%s\n", myBuffer);
|
---|
[457] | 1002 | #ifdef DEBUG_SNIFFER
|
---|
[464] | 1003 | XFPRINTF(stderr, "\t%s\n", myBuffer);
|
---|
[457] | 1004 | #endif
|
---|
| 1005 | }
|
---|
| 1006 | }
|
---|
| 1007 |
|
---|
| 1008 |
|
---|
| 1009 | /* Show TimeStamp for beginning of packet Trace */
|
---|
| 1010 | static void TraceHeader(void)
|
---|
| 1011 | {
|
---|
| 1012 | if (TraceOn) {
|
---|
[464] | 1013 | time_t ticks = XTIME(NULL);
|
---|
| 1014 | XFPRINTF(TraceFile, "\n%s", XCTIME(&ticks));
|
---|
[457] | 1015 | }
|
---|
| 1016 | }
|
---|
| 1017 |
|
---|
| 1018 |
|
---|
| 1019 | /* Show Set Server info for Trace */
|
---|
| 1020 | static void TraceSetServer(const char* srv, int port, const char* keyFile)
|
---|
| 1021 | {
|
---|
| 1022 | if (TraceOn) {
|
---|
[464] | 1023 | XFPRINTF(TraceFile, "\tTrying to install a new Sniffer Server with\n");
|
---|
| 1024 | XFPRINTF(TraceFile, "\tserver: %s, port: %d, keyFile: %s\n", srv, port,
|
---|
[457] | 1025 | keyFile);
|
---|
| 1026 | }
|
---|
| 1027 | }
|
---|
| 1028 |
|
---|
| 1029 |
|
---|
| 1030 | #ifdef HAVE_SNI
|
---|
| 1031 |
|
---|
| 1032 | /* Show Set Named Server info for Trace */
|
---|
| 1033 | static void TraceSetNamedServer(const char* name,
|
---|
| 1034 | const char* srv, int port, const char* keyFile)
|
---|
| 1035 | {
|
---|
| 1036 | if (TraceOn) {
|
---|
[464] | 1037 | XFPRINTF(TraceFile, "\tTrying to install a new Sniffer Server with\n");
|
---|
| 1038 | XFPRINTF(TraceFile, "\tname: %s, server: %s, port: %d, keyFile: %s\n",
|
---|
| 1039 | name ? name : "",
|
---|
| 1040 | srv ? srv : "",
|
---|
| 1041 | port,
|
---|
| 1042 | keyFile ? keyFile : "");
|
---|
[457] | 1043 | }
|
---|
| 1044 | }
|
---|
| 1045 |
|
---|
| 1046 | #endif
|
---|
| 1047 |
|
---|
| 1048 |
|
---|
| 1049 | /* Trace got packet number */
|
---|
| 1050 | static void TracePacket(void)
|
---|
| 1051 | {
|
---|
| 1052 | if (TraceOn) {
|
---|
| 1053 | static word32 packetNumber = 0;
|
---|
[464] | 1054 | XFPRINTF(TraceFile, "\tGot a Packet to decode, packet %u\n",
|
---|
[457] | 1055 | ++packetNumber);
|
---|
| 1056 | }
|
---|
| 1057 | }
|
---|
| 1058 |
|
---|
| 1059 |
|
---|
| 1060 | /* Convert network byte order address into human readable */
|
---|
| 1061 | static const char* IpToS(int version, void* src, char* dst)
|
---|
| 1062 | {
|
---|
[464] | 1063 | return XINET_NTOP(version, src, dst, TRACE_MSG_SZ);
|
---|
[457] | 1064 | }
|
---|
| 1065 |
|
---|
| 1066 |
|
---|
| 1067 | /* Show destination and source address from Ip Hdr for packet Trace */
|
---|
| 1068 | static void TraceIP(IpHdr* iphdr)
|
---|
| 1069 | {
|
---|
| 1070 | if (TraceOn) {
|
---|
| 1071 | char src[TRACE_MSG_SZ];
|
---|
| 1072 | char dst[TRACE_MSG_SZ];
|
---|
[464] | 1073 | XFPRINTF(TraceFile, "\tdst:%s src:%s\n",
|
---|
[457] | 1074 | IpToS(AF_INET, &iphdr->dst, dst),
|
---|
| 1075 | IpToS(AF_INET, &iphdr->src, src));
|
---|
| 1076 | }
|
---|
| 1077 | }
|
---|
| 1078 |
|
---|
| 1079 |
|
---|
| 1080 | /* Show destination and source address from Ip6Hdr for packet Trace */
|
---|
| 1081 | static void TraceIP6(Ip6Hdr* iphdr)
|
---|
| 1082 | {
|
---|
| 1083 | if (TraceOn) {
|
---|
| 1084 | char src[TRACE_MSG_SZ];
|
---|
| 1085 | char dst[TRACE_MSG_SZ];
|
---|
[464] | 1086 | XFPRINTF(TraceFile, "\tdst: %s src: %s\n",
|
---|
[457] | 1087 | IpToS(AF_INET6, iphdr->dst, dst),
|
---|
| 1088 | IpToS(AF_INET6, iphdr->src, src));
|
---|
| 1089 | }
|
---|
| 1090 | }
|
---|
| 1091 |
|
---|
| 1092 |
|
---|
| 1093 | /* Show destination and source port from Tcp Hdr for packet Trace */
|
---|
| 1094 | static void TraceTcp(TcpHdr* tcphdr)
|
---|
| 1095 | {
|
---|
| 1096 | if (TraceOn) {
|
---|
[464] | 1097 | XFPRINTF(TraceFile, "\tdstPort:%u srcPort:%u\n", XNTOHS(tcphdr->dstPort),
|
---|
| 1098 | XNTOHS(tcphdr->srcPort));
|
---|
[457] | 1099 | }
|
---|
| 1100 | }
|
---|
| 1101 |
|
---|
| 1102 |
|
---|
| 1103 | /* Show sequence and payload length for Trace */
|
---|
| 1104 | static void TraceSequence(word32 seq, int len)
|
---|
| 1105 | {
|
---|
| 1106 | if (TraceOn) {
|
---|
[464] | 1107 | XFPRINTF(TraceFile, "\tSequence:%u, payload length:%d\n", seq, len);
|
---|
[457] | 1108 | }
|
---|
| 1109 | }
|
---|
| 1110 |
|
---|
| 1111 |
|
---|
| 1112 | /* Show sequence and payload length for Trace */
|
---|
| 1113 | static void TraceAck(word32 ack, word32 expected)
|
---|
| 1114 | {
|
---|
| 1115 | if (TraceOn) {
|
---|
[464] | 1116 | XFPRINTF(TraceFile, "\tAck:%u Expected:%u\n", ack, expected);
|
---|
[457] | 1117 | }
|
---|
| 1118 | }
|
---|
| 1119 |
|
---|
| 1120 |
|
---|
| 1121 | /* Show relative expected and relative received sequences */
|
---|
| 1122 | static void TraceRelativeSequence(word32 expected, word32 got)
|
---|
| 1123 | {
|
---|
| 1124 | if (TraceOn) {
|
---|
[464] | 1125 | XFPRINTF(TraceFile, "\tExpected sequence:%u, received sequence:%u\n",
|
---|
[457] | 1126 | expected, got);
|
---|
| 1127 | }
|
---|
| 1128 | }
|
---|
| 1129 |
|
---|
| 1130 |
|
---|
| 1131 | /* Show server sequence startup from SYN */
|
---|
| 1132 | static void TraceServerSyn(word32 seq)
|
---|
| 1133 | {
|
---|
| 1134 | if (TraceOn) {
|
---|
[464] | 1135 | XFPRINTF(TraceFile, "\tServer SYN, Sequence Start:%u\n", seq);
|
---|
[457] | 1136 | }
|
---|
| 1137 | }
|
---|
| 1138 |
|
---|
| 1139 |
|
---|
| 1140 | /* Show client sequence startup from SYN */
|
---|
| 1141 | static void TraceClientSyn(word32 seq)
|
---|
| 1142 | {
|
---|
| 1143 | if (TraceOn) {
|
---|
[464] | 1144 | XFPRINTF(TraceFile, "\tClient SYN, Sequence Start:%u\n", seq);
|
---|
[457] | 1145 | }
|
---|
| 1146 | }
|
---|
| 1147 |
|
---|
| 1148 |
|
---|
| 1149 | /* Show client FIN capture */
|
---|
| 1150 | static void TraceClientFin(word32 finSeq, word32 relSeq)
|
---|
| 1151 | {
|
---|
| 1152 | if (TraceOn) {
|
---|
[464] | 1153 | XFPRINTF(TraceFile, "\tClient FIN capture:%u, current SEQ:%u\n",
|
---|
[457] | 1154 | finSeq, relSeq);
|
---|
| 1155 | }
|
---|
| 1156 | }
|
---|
| 1157 |
|
---|
| 1158 |
|
---|
| 1159 | /* Show server FIN capture */
|
---|
| 1160 | static void TraceServerFin(word32 finSeq, word32 relSeq)
|
---|
| 1161 | {
|
---|
| 1162 | if (TraceOn) {
|
---|
[464] | 1163 | XFPRINTF(TraceFile, "\tServer FIN capture:%u, current SEQ:%u\n",
|
---|
[457] | 1164 | finSeq, relSeq);
|
---|
| 1165 | }
|
---|
| 1166 | }
|
---|
| 1167 |
|
---|
| 1168 |
|
---|
| 1169 | /* Show number of SSL data bytes decoded, could be 0 (ok) */
|
---|
| 1170 | static void TraceGotData(int bytes)
|
---|
| 1171 | {
|
---|
| 1172 | if (TraceOn) {
|
---|
[464] | 1173 | XFPRINTF(TraceFile, "\t%d bytes of SSL App data processed\n", bytes);
|
---|
[457] | 1174 | }
|
---|
| 1175 | }
|
---|
| 1176 |
|
---|
| 1177 |
|
---|
| 1178 | /* Show bytes added to old SSL App data */
|
---|
| 1179 | static void TraceAddedData(int newBytes, int existingBytes)
|
---|
| 1180 | {
|
---|
| 1181 | if (TraceOn) {
|
---|
[464] | 1182 | XFPRINTF(TraceFile,
|
---|
[457] | 1183 | "\t%d bytes added to %d existing bytes in User Buffer\n",
|
---|
| 1184 | newBytes, existingBytes);
|
---|
| 1185 | }
|
---|
| 1186 | }
|
---|
| 1187 |
|
---|
| 1188 |
|
---|
| 1189 | /* Show Stale Session */
|
---|
| 1190 | static void TraceStaleSession(void)
|
---|
| 1191 | {
|
---|
| 1192 | if (TraceOn) {
|
---|
[464] | 1193 | XFPRINTF(TraceFile, "\tFound a stale session\n");
|
---|
[457] | 1194 | }
|
---|
| 1195 | }
|
---|
| 1196 |
|
---|
| 1197 |
|
---|
| 1198 | /* Show Finding Stale Sessions */
|
---|
| 1199 | static void TraceFindingStale(void)
|
---|
| 1200 | {
|
---|
| 1201 | if (TraceOn) {
|
---|
[464] | 1202 | XFPRINTF(TraceFile, "\tTrying to find Stale Sessions\n");
|
---|
[457] | 1203 | }
|
---|
| 1204 | }
|
---|
| 1205 |
|
---|
| 1206 |
|
---|
| 1207 | /* Show Removed Session */
|
---|
| 1208 | static void TraceRemovedSession(void)
|
---|
| 1209 | {
|
---|
| 1210 | if (TraceOn) {
|
---|
[464] | 1211 | XFPRINTF(TraceFile, "\tRemoved it\n");
|
---|
[457] | 1212 | }
|
---|
| 1213 | }
|
---|
| 1214 |
|
---|
| 1215 |
|
---|
| 1216 | /* Show SSLInfo if provided and is valid. */
|
---|
| 1217 | static void TraceSessionInfo(SSLInfo* sslInfo)
|
---|
| 1218 | {
|
---|
| 1219 | if (TraceOn) {
|
---|
| 1220 | if (sslInfo != NULL && sslInfo->isValid) {
|
---|
[464] | 1221 | XFPRINTF(TraceFile,
|
---|
[457] | 1222 | "\tver:(%u %u) suiteId:(%02x %02x) suiteName:(%s) "
|
---|
| 1223 | #ifdef HAVE_SNI
|
---|
| 1224 | "sni:(%s) "
|
---|
| 1225 | #endif
|
---|
| 1226 | "keySize:(%u)\n",
|
---|
| 1227 | sslInfo->protocolVersionMajor,
|
---|
| 1228 | sslInfo->protocolVersionMinor,
|
---|
| 1229 | sslInfo->serverCipherSuite0,
|
---|
| 1230 | sslInfo->serverCipherSuite,
|
---|
| 1231 | sslInfo->serverCipherSuiteName,
|
---|
| 1232 | #ifdef HAVE_SNI
|
---|
| 1233 | sslInfo->serverNameIndication,
|
---|
| 1234 | #endif
|
---|
| 1235 | sslInfo->keySize);
|
---|
| 1236 | }
|
---|
| 1237 | }
|
---|
| 1238 | }
|
---|
| 1239 |
|
---|
| 1240 |
|
---|
| 1241 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 1242 |
|
---|
| 1243 | /* Show value added to a named statistic. */
|
---|
| 1244 | static void TraceStat(const char* name, int add)
|
---|
| 1245 | {
|
---|
| 1246 | if (TraceOn) {
|
---|
[464] | 1247 | XFPRINTF(TraceFile, "\tAdding %d to %s\n", add, name);
|
---|
[457] | 1248 | }
|
---|
| 1249 | }
|
---|
| 1250 |
|
---|
| 1251 | #endif
|
---|
| 1252 |
|
---|
| 1253 |
|
---|
| 1254 | /* Set user error string */
|
---|
| 1255 | static void SetError(int idx, char* error, SnifferSession* session, int fatal)
|
---|
| 1256 | {
|
---|
| 1257 | GetError(idx, error);
|
---|
| 1258 | Trace(idx);
|
---|
| 1259 | if (session && fatal == FATAL_ERROR_STATE)
|
---|
| 1260 | session->flags.fatalError = 1;
|
---|
| 1261 | }
|
---|
| 1262 |
|
---|
| 1263 |
|
---|
| 1264 | /* Compare IpAddrInfo structs */
|
---|
| 1265 | static WC_INLINE int MatchAddr(IpAddrInfo l, IpAddrInfo r)
|
---|
| 1266 | {
|
---|
| 1267 | if (l.version == r.version) {
|
---|
| 1268 | if (l.version == IPV4)
|
---|
| 1269 | return (l.ip4 == r.ip4);
|
---|
| 1270 | else if (l.version == IPV6)
|
---|
| 1271 | return (0 == XMEMCMP(l.ip6, r.ip6, sizeof(l.ip6)));
|
---|
| 1272 | }
|
---|
| 1273 | return 0;
|
---|
| 1274 | }
|
---|
| 1275 |
|
---|
| 1276 |
|
---|
| 1277 | #ifndef WOLFSSL_SNIFFER_WATCH
|
---|
| 1278 |
|
---|
| 1279 | /* See if this IPV4 network order address has been registered */
|
---|
| 1280 | /* return 1 is true, 0 is false */
|
---|
| 1281 | static int IsServerRegistered(word32 addr)
|
---|
| 1282 | {
|
---|
| 1283 | int ret = 0; /* false */
|
---|
| 1284 | SnifferServer* sniffer;
|
---|
| 1285 |
|
---|
| 1286 | wc_LockMutex(&ServerListMutex);
|
---|
| 1287 |
|
---|
| 1288 | sniffer = ServerList;
|
---|
| 1289 | while (sniffer) {
|
---|
| 1290 | if (sniffer->server.ip4 == addr) {
|
---|
| 1291 | ret = 1;
|
---|
| 1292 | break;
|
---|
| 1293 | }
|
---|
| 1294 | sniffer = sniffer->next;
|
---|
| 1295 | }
|
---|
| 1296 |
|
---|
| 1297 | wc_UnLockMutex(&ServerListMutex);
|
---|
| 1298 |
|
---|
| 1299 | return ret;
|
---|
| 1300 | }
|
---|
| 1301 |
|
---|
| 1302 |
|
---|
| 1303 | /* See if this port has been registered to watch */
|
---|
| 1304 | /* See if this IPV4 network order address has been registered */
|
---|
| 1305 | /* return 1 is true, 0 is false */
|
---|
| 1306 | static int IsServerRegistered6(byte* addr)
|
---|
| 1307 | {
|
---|
| 1308 | int ret = 0; /* false */
|
---|
| 1309 | SnifferServer* sniffer;
|
---|
| 1310 |
|
---|
| 1311 | wc_LockMutex(&ServerListMutex);
|
---|
| 1312 |
|
---|
| 1313 | sniffer = ServerList;
|
---|
| 1314 | while (sniffer) {
|
---|
| 1315 | if (sniffer->server.version == IPV6 &&
|
---|
| 1316 | 0 == XMEMCMP(sniffer->server.ip6, addr, sizeof(sniffer->server.ip6))) {
|
---|
| 1317 | ret = 1;
|
---|
| 1318 | break;
|
---|
| 1319 | }
|
---|
| 1320 | sniffer = sniffer->next;
|
---|
| 1321 | }
|
---|
| 1322 |
|
---|
| 1323 | wc_UnLockMutex(&ServerListMutex);
|
---|
| 1324 |
|
---|
| 1325 | return ret;
|
---|
| 1326 | }
|
---|
| 1327 |
|
---|
| 1328 |
|
---|
| 1329 | /* See if this port has been registered to watch */
|
---|
| 1330 | /* return 1 is true, 0 is false */
|
---|
| 1331 | static int IsPortRegistered(word32 port)
|
---|
| 1332 | {
|
---|
| 1333 | int ret = 0; /* false */
|
---|
| 1334 | SnifferServer* sniffer;
|
---|
| 1335 |
|
---|
| 1336 | wc_LockMutex(&ServerListMutex);
|
---|
| 1337 |
|
---|
| 1338 | sniffer = ServerList;
|
---|
| 1339 | while (sniffer) {
|
---|
| 1340 | if (sniffer->port == (int)port) {
|
---|
| 1341 | ret = 1;
|
---|
| 1342 | break;
|
---|
| 1343 | }
|
---|
| 1344 | sniffer = sniffer->next;
|
---|
| 1345 | }
|
---|
| 1346 |
|
---|
| 1347 | wc_UnLockMutex(&ServerListMutex);
|
---|
| 1348 |
|
---|
| 1349 | return ret;
|
---|
| 1350 | }
|
---|
| 1351 |
|
---|
| 1352 | #endif
|
---|
| 1353 |
|
---|
| 1354 |
|
---|
| 1355 | /* Get SnifferServer from IP and Port */
|
---|
| 1356 | static SnifferServer* GetSnifferServer(IpInfo* ipInfo, TcpInfo* tcpInfo)
|
---|
| 1357 | {
|
---|
| 1358 | SnifferServer* sniffer;
|
---|
| 1359 |
|
---|
| 1360 | wc_LockMutex(&ServerListMutex);
|
---|
| 1361 |
|
---|
| 1362 | sniffer = ServerList;
|
---|
| 1363 |
|
---|
| 1364 | #ifndef WOLFSSL_SNIFFER_WATCH
|
---|
| 1365 | while (sniffer) {
|
---|
| 1366 | if (sniffer->port == tcpInfo->srcPort &&
|
---|
| 1367 | MatchAddr(sniffer->server, ipInfo->src))
|
---|
| 1368 | break;
|
---|
| 1369 | if (sniffer->port == tcpInfo->dstPort &&
|
---|
| 1370 | MatchAddr(sniffer->server, ipInfo->dst))
|
---|
| 1371 | break;
|
---|
| 1372 |
|
---|
| 1373 | sniffer = sniffer->next;
|
---|
| 1374 | }
|
---|
| 1375 | #else
|
---|
| 1376 | (void)ipInfo;
|
---|
| 1377 | (void)tcpInfo;
|
---|
| 1378 | #endif
|
---|
| 1379 |
|
---|
| 1380 | wc_UnLockMutex(&ServerListMutex);
|
---|
| 1381 |
|
---|
| 1382 | return sniffer;
|
---|
| 1383 | }
|
---|
| 1384 |
|
---|
| 1385 |
|
---|
| 1386 | /* Hash the Session Info, return hash row */
|
---|
| 1387 | static word32 SessionHash(IpInfo* ipInfo, TcpInfo* tcpInfo)
|
---|
| 1388 | {
|
---|
| 1389 | word32 hash = 1;
|
---|
| 1390 |
|
---|
| 1391 | if (ipInfo->src.version == IPV4) {
|
---|
| 1392 | hash *= ipInfo->src.ip4 * ipInfo->dst.ip4;
|
---|
| 1393 | }
|
---|
| 1394 | else if (ipInfo->src.version == IPV6) {
|
---|
| 1395 | word32* x;
|
---|
| 1396 | word32 y;
|
---|
| 1397 | x = (word32*)ipInfo->src.ip6;
|
---|
| 1398 | y = x[0] ^ x[1] ^ x[2] ^ x[3];
|
---|
| 1399 | hash *= y;
|
---|
| 1400 | x = (word32*)ipInfo->dst.ip6;
|
---|
| 1401 | y = x[0] ^ x[1] ^ x[2] ^ x[3];
|
---|
| 1402 | hash *= y;
|
---|
| 1403 | }
|
---|
| 1404 | hash *= tcpInfo->srcPort * tcpInfo->dstPort;
|
---|
| 1405 |
|
---|
| 1406 | return hash % HASH_SIZE;
|
---|
| 1407 | }
|
---|
| 1408 |
|
---|
| 1409 |
|
---|
| 1410 | /* Get Existing SnifferSession from IP and Port */
|
---|
| 1411 | static SnifferSession* GetSnifferSession(IpInfo* ipInfo, TcpInfo* tcpInfo)
|
---|
| 1412 | {
|
---|
| 1413 | SnifferSession* session;
|
---|
[464] | 1414 | time_t currTime = XTIME(NULL);
|
---|
[457] | 1415 | word32 row = SessionHash(ipInfo, tcpInfo);
|
---|
| 1416 |
|
---|
| 1417 | assert(row <= HASH_SIZE);
|
---|
| 1418 |
|
---|
| 1419 | wc_LockMutex(&SessionMutex);
|
---|
| 1420 |
|
---|
| 1421 | session = SessionTable[row];
|
---|
| 1422 | while (session) {
|
---|
| 1423 | if (MatchAddr(session->server, ipInfo->src) &&
|
---|
| 1424 | MatchAddr(session->client, ipInfo->dst) &&
|
---|
| 1425 | session->srvPort == tcpInfo->srcPort &&
|
---|
| 1426 | session->cliPort == tcpInfo->dstPort)
|
---|
| 1427 | break;
|
---|
| 1428 |
|
---|
| 1429 | if (MatchAddr(session->client, ipInfo->src) &&
|
---|
| 1430 | MatchAddr(session->server, ipInfo->dst) &&
|
---|
| 1431 | session->cliPort == tcpInfo->srcPort &&
|
---|
| 1432 | session->srvPort == tcpInfo->dstPort)
|
---|
| 1433 | break;
|
---|
| 1434 |
|
---|
| 1435 | session = session->next;
|
---|
| 1436 | }
|
---|
| 1437 |
|
---|
| 1438 | if (session)
|
---|
| 1439 | session->lastUsed= currTime; /* keep session alive, remove stale will */
|
---|
| 1440 | /* leave alone */
|
---|
| 1441 | wc_UnLockMutex(&SessionMutex);
|
---|
| 1442 |
|
---|
| 1443 | /* determine side */
|
---|
| 1444 | if (session) {
|
---|
| 1445 | if (MatchAddr(ipInfo->dst, session->server) &&
|
---|
| 1446 | tcpInfo->dstPort == session->srvPort) {
|
---|
| 1447 |
|
---|
| 1448 | session->flags.side = WOLFSSL_SERVER_END;
|
---|
| 1449 | }
|
---|
| 1450 | else {
|
---|
| 1451 | session->flags.side = WOLFSSL_CLIENT_END;
|
---|
| 1452 | }
|
---|
| 1453 | }
|
---|
| 1454 |
|
---|
| 1455 | return session;
|
---|
| 1456 | }
|
---|
| 1457 |
|
---|
| 1458 |
|
---|
| 1459 | #if defined(HAVE_SNI) || defined(WOLFSSL_SNIFFER_WATCH)
|
---|
| 1460 |
|
---|
| 1461 | static int LoadKeyFile(byte** keyBuf, word32* keyBufSz,
|
---|
[464] | 1462 | const char* keyFile, int keySz, int typeKey,
|
---|
[457] | 1463 | const char* password)
|
---|
| 1464 | {
|
---|
| 1465 | byte* loadBuf;
|
---|
| 1466 | long fileSz = 0;
|
---|
| 1467 | XFILE file;
|
---|
[464] | 1468 | int ret = -1;
|
---|
[457] | 1469 |
|
---|
| 1470 | if (keyBuf == NULL || keyBufSz == NULL || keyFile == NULL) {
|
---|
| 1471 | return -1;
|
---|
| 1472 | }
|
---|
| 1473 |
|
---|
[464] | 1474 | if (keySz == 0) {
|
---|
| 1475 | /* load from file */
|
---|
| 1476 | file = XFOPEN(keyFile, "rb");
|
---|
| 1477 | if (file == XBADFILE) return -1;
|
---|
| 1478 | if(XFSEEK(file, 0, XSEEK_END) != 0) {
|
---|
| 1479 | XFCLOSE(file);
|
---|
| 1480 | return -1;
|
---|
| 1481 | }
|
---|
| 1482 | fileSz = XFTELL(file);
|
---|
| 1483 | if (fileSz > MAX_WOLFSSL_FILE_SIZE || fileSz < 0) {
|
---|
| 1484 | XFCLOSE(file);
|
---|
| 1485 | return -1;
|
---|
| 1486 | }
|
---|
| 1487 | XREWIND(file);
|
---|
[457] | 1488 |
|
---|
[464] | 1489 | loadBuf = (byte*)XMALLOC(fileSz, NULL, DYNAMIC_TYPE_FILE);
|
---|
| 1490 | if (loadBuf == NULL) {
|
---|
| 1491 | XFCLOSE(file);
|
---|
| 1492 | return -1;
|
---|
| 1493 | }
|
---|
| 1494 |
|
---|
| 1495 | ret = (int)XFREAD(loadBuf, 1, fileSz, file);
|
---|
[457] | 1496 | XFCLOSE(file);
|
---|
| 1497 |
|
---|
[464] | 1498 | if (ret != fileSz) {
|
---|
| 1499 | XFREE(loadBuf, NULL, DYNAMIC_TYPE_FILE);
|
---|
| 1500 | return -1;
|
---|
| 1501 | }
|
---|
[457] | 1502 | }
|
---|
[464] | 1503 | else {
|
---|
| 1504 | /* use buffer directly */
|
---|
| 1505 | loadBuf = (byte*)XMALLOC(keySz, NULL, DYNAMIC_TYPE_FILE);
|
---|
| 1506 | if (loadBuf == NULL) {
|
---|
| 1507 | return -1;
|
---|
| 1508 | }
|
---|
| 1509 | fileSz = keySz;
|
---|
| 1510 | XMEMCPY(loadBuf, keyFile, fileSz);
|
---|
| 1511 | }
|
---|
[457] | 1512 |
|
---|
| 1513 | if (typeKey == WOLFSSL_FILETYPE_PEM) {
|
---|
| 1514 | byte* saveBuf = (byte*)XMALLOC(fileSz, NULL, DYNAMIC_TYPE_X509);
|
---|
| 1515 | int saveBufSz = 0;
|
---|
| 1516 |
|
---|
| 1517 | ret = -1;
|
---|
| 1518 | if (saveBuf != NULL) {
|
---|
| 1519 | saveBufSz = wc_KeyPemToDer(loadBuf, (int)fileSz,
|
---|
| 1520 | saveBuf, (int)fileSz, password);
|
---|
| 1521 | if (saveBufSz < 0) {
|
---|
| 1522 | saveBufSz = 0;
|
---|
| 1523 | XFREE(saveBuf, NULL, DYNAMIC_TYPE_X509);
|
---|
| 1524 | saveBuf = NULL;
|
---|
| 1525 | }
|
---|
| 1526 | else
|
---|
| 1527 | ret = 0;
|
---|
| 1528 | }
|
---|
| 1529 |
|
---|
| 1530 | ForceZero(loadBuf, (word32)fileSz);
|
---|
| 1531 | XFREE(loadBuf, NULL, DYNAMIC_TYPE_FILE);
|
---|
| 1532 |
|
---|
| 1533 | if (saveBuf) {
|
---|
| 1534 | *keyBuf = saveBuf;
|
---|
| 1535 | *keyBufSz = (word32)saveBufSz;
|
---|
| 1536 | }
|
---|
| 1537 | }
|
---|
| 1538 | else {
|
---|
| 1539 | *keyBuf = loadBuf;
|
---|
| 1540 | *keyBufSz = (word32)fileSz;
|
---|
| 1541 | }
|
---|
| 1542 |
|
---|
| 1543 | if (ret < 0) {
|
---|
| 1544 | return -1;
|
---|
| 1545 | }
|
---|
| 1546 |
|
---|
| 1547 | return ret;
|
---|
| 1548 | }
|
---|
| 1549 |
|
---|
| 1550 | #endif
|
---|
| 1551 |
|
---|
| 1552 |
|
---|
| 1553 | #ifdef WOLFSSL_SNIFFER_WATCH
|
---|
| 1554 |
|
---|
| 1555 | static int CreateWatchSnifferServer(char* error)
|
---|
| 1556 | {
|
---|
| 1557 | SnifferServer* sniffer;
|
---|
| 1558 |
|
---|
| 1559 | sniffer = (SnifferServer*)XMALLOC(sizeof(SnifferServer), NULL,
|
---|
| 1560 | DYNAMIC_TYPE_SNIFFER_SERVER);
|
---|
| 1561 | if (sniffer == NULL) {
|
---|
| 1562 | SetError(MEMORY_STR, error, NULL, 0);
|
---|
| 1563 | return -1;
|
---|
| 1564 | }
|
---|
| 1565 | InitSnifferServer(sniffer);
|
---|
[464] | 1566 | sniffer->ctx = wolfSSL_CTX_new(SSLv23_client_method());
|
---|
[457] | 1567 | if (!sniffer->ctx) {
|
---|
| 1568 | SetError(MEMORY_STR, error, NULL, 0);
|
---|
| 1569 | FreeSnifferServer(sniffer);
|
---|
| 1570 | return -1;
|
---|
| 1571 | }
|
---|
| 1572 | #ifdef WOLF_CRYPTO_CB
|
---|
| 1573 | if (CryptoDeviceId != INVALID_DEVID)
|
---|
| 1574 | wolfSSL_CTX_SetDevId(sniffer->ctx, CryptoDeviceId);
|
---|
| 1575 | #endif
|
---|
| 1576 | ServerList = sniffer;
|
---|
| 1577 |
|
---|
| 1578 | return 0;
|
---|
| 1579 | }
|
---|
| 1580 |
|
---|
| 1581 | #endif
|
---|
| 1582 |
|
---|
| 1583 |
|
---|
| 1584 | static int SetNamedPrivateKey(const char* name, const char* address, int port,
|
---|
[464] | 1585 | const char* keyFile, int keySz, int typeKey, const char* password,
|
---|
| 1586 | char* error, int isEphemeralKey)
|
---|
[457] | 1587 | {
|
---|
| 1588 | SnifferServer* sniffer;
|
---|
| 1589 | int ret;
|
---|
| 1590 | int type = (typeKey == FILETYPE_PEM) ? WOLFSSL_FILETYPE_PEM :
|
---|
| 1591 | WOLFSSL_FILETYPE_ASN1;
|
---|
| 1592 | int isNew = 0;
|
---|
| 1593 | IpAddrInfo serverIp;
|
---|
| 1594 |
|
---|
| 1595 | #ifdef HAVE_SNI
|
---|
| 1596 | NamedKey* namedKey = NULL;
|
---|
| 1597 | #endif
|
---|
| 1598 |
|
---|
| 1599 | (void)name;
|
---|
| 1600 | #ifdef HAVE_SNI
|
---|
| 1601 | if (name != NULL) {
|
---|
| 1602 | namedKey = (NamedKey*)XMALLOC(sizeof(NamedKey),
|
---|
| 1603 | NULL, DYNAMIC_TYPE_SNIFFER_NAMED_KEY);
|
---|
| 1604 | if (namedKey == NULL) {
|
---|
| 1605 | SetError(MEMORY_STR, error, NULL, 0);
|
---|
| 1606 | return -1;
|
---|
| 1607 | }
|
---|
| 1608 | XMEMSET(namedKey, 0, sizeof(NamedKey));
|
---|
| 1609 |
|
---|
| 1610 | namedKey->nameSz = (word32)XSTRLEN(name);
|
---|
| 1611 | if (namedKey->nameSz > sizeof(namedKey->name)-1)
|
---|
| 1612 | namedKey->nameSz = sizeof(namedKey->name)-1;
|
---|
| 1613 | XSTRNCPY(namedKey->name, name, namedKey->nameSz);
|
---|
| 1614 | namedKey->name[MAX_SERVER_NAME-1] = '\0';
|
---|
[464] | 1615 | namedKey->isEphemeralKey = isEphemeralKey;
|
---|
[457] | 1616 | ret = LoadKeyFile(&namedKey->key, &namedKey->keySz,
|
---|
[464] | 1617 | keyFile, keySz, type, password);
|
---|
[457] | 1618 | if (ret < 0) {
|
---|
| 1619 | SetError(KEY_FILE_STR, error, NULL, 0);
|
---|
| 1620 | FreeNamedKey(namedKey);
|
---|
| 1621 | return -1;
|
---|
| 1622 | }
|
---|
| 1623 | }
|
---|
| 1624 | #endif
|
---|
| 1625 |
|
---|
| 1626 | serverIp.version = IPV4;
|
---|
[464] | 1627 | serverIp.ip4 = XINET_ADDR(address);
|
---|
| 1628 | if (serverIp.ip4 == XINADDR_NONE) {
|
---|
| 1629 | #ifdef FUSION_RTOS
|
---|
| 1630 | if (XINET_PTON(AF_INET6, address, serverIp.ip6,
|
---|
| 1631 | sizeof(serverIp.ip4)) == 1) {
|
---|
| 1632 | #else
|
---|
| 1633 | if (XINET_PTON(AF_INET6, address, serverIp.ip6) == 1) {
|
---|
| 1634 | #endif
|
---|
[457] | 1635 | serverIp.version = IPV6;
|
---|
| 1636 | }
|
---|
| 1637 | }
|
---|
| 1638 | sniffer = ServerList;
|
---|
| 1639 | while (sniffer != NULL &&
|
---|
| 1640 | (!MatchAddr(sniffer->server, serverIp) || sniffer->port != port)) {
|
---|
| 1641 | sniffer = sniffer->next;
|
---|
| 1642 | }
|
---|
| 1643 |
|
---|
| 1644 | if (sniffer == NULL) {
|
---|
| 1645 | isNew = 1;
|
---|
| 1646 | sniffer = (SnifferServer*)XMALLOC(sizeof(SnifferServer),
|
---|
| 1647 | NULL, DYNAMIC_TYPE_SNIFFER_SERVER);
|
---|
| 1648 | if (sniffer == NULL) {
|
---|
| 1649 | SetError(MEMORY_STR, error, NULL, 0);
|
---|
| 1650 | #ifdef HAVE_SNI
|
---|
| 1651 | FreeNamedKey(namedKey);
|
---|
| 1652 | #endif
|
---|
| 1653 | return -1;
|
---|
| 1654 | }
|
---|
| 1655 | InitSnifferServer(sniffer);
|
---|
| 1656 |
|
---|
| 1657 | XSTRNCPY(sniffer->address, address, MAX_SERVER_ADDRESS-1);
|
---|
| 1658 | sniffer->address[MAX_SERVER_ADDRESS-1] = '\0';
|
---|
| 1659 | sniffer->server = serverIp;
|
---|
| 1660 | sniffer->port = port;
|
---|
| 1661 |
|
---|
[464] | 1662 | sniffer->ctx = wolfSSL_CTX_new(SSLv23_client_method());
|
---|
[457] | 1663 | if (!sniffer->ctx) {
|
---|
| 1664 | SetError(MEMORY_STR, error, NULL, 0);
|
---|
| 1665 | #ifdef HAVE_SNI
|
---|
| 1666 | FreeNamedKey(namedKey);
|
---|
| 1667 | #endif
|
---|
| 1668 | FreeSnifferServer(sniffer);
|
---|
| 1669 | return -1;
|
---|
| 1670 | }
|
---|
| 1671 | }
|
---|
| 1672 |
|
---|
| 1673 | if (name == NULL) {
|
---|
| 1674 | if (password) {
|
---|
| 1675 | #ifdef WOLFSSL_ENCRYPTED_KEYS
|
---|
[464] | 1676 | wolfSSL_CTX_set_default_passwd_cb(sniffer->ctx, SetPassword);
|
---|
| 1677 | wolfSSL_CTX_set_default_passwd_cb_userdata(
|
---|
[457] | 1678 | sniffer->ctx, (void*)password);
|
---|
| 1679 | #endif
|
---|
| 1680 | }
|
---|
[464] | 1681 |
|
---|
| 1682 | #ifdef WOLFSSL_STATIC_EPHEMERAL
|
---|
| 1683 | if (isEphemeralKey) {
|
---|
| 1684 | /* auto detect key type with WC_PK_TYPE_NONE */
|
---|
| 1685 | /* keySz == 0 mean load file */
|
---|
| 1686 | ret = wolfSSL_CTX_set_ephemeral_key(sniffer->ctx, WC_PK_TYPE_NONE,
|
---|
| 1687 | keyFile, 0, type);
|
---|
| 1688 | if (ret == 0)
|
---|
| 1689 | ret = WOLFSSL_SUCCESS;
|
---|
| 1690 | }
|
---|
| 1691 | else
|
---|
| 1692 | #endif
|
---|
| 1693 | {
|
---|
| 1694 | if (keySz == 0) {
|
---|
| 1695 | ret = wolfSSL_CTX_use_PrivateKey_file(sniffer->ctx, keyFile, type);
|
---|
| 1696 | }
|
---|
| 1697 | else {
|
---|
| 1698 | ret = wolfSSL_CTX_use_PrivateKey_buffer(sniffer->ctx,
|
---|
| 1699 | (const byte*)keyFile, keySz, type);
|
---|
| 1700 | }
|
---|
| 1701 | }
|
---|
[457] | 1702 | if (ret != WOLFSSL_SUCCESS) {
|
---|
| 1703 | SetError(KEY_FILE_STR, error, NULL, 0);
|
---|
| 1704 | if (isNew)
|
---|
| 1705 | FreeSnifferServer(sniffer);
|
---|
| 1706 | return -1;
|
---|
| 1707 | }
|
---|
| 1708 | #ifdef WOLF_CRYPTO_CB
|
---|
| 1709 | wolfSSL_CTX_SetDevId(sniffer->ctx, CryptoDeviceId);
|
---|
| 1710 | #endif
|
---|
| 1711 | }
|
---|
| 1712 | #ifdef HAVE_SNI
|
---|
| 1713 | else {
|
---|
| 1714 | wc_LockMutex(&sniffer->namedKeysMutex);
|
---|
| 1715 | namedKey->next = sniffer->namedKeys;
|
---|
| 1716 | sniffer->namedKeys = namedKey;
|
---|
| 1717 | wc_UnLockMutex(&sniffer->namedKeysMutex);
|
---|
| 1718 | }
|
---|
| 1719 | #endif
|
---|
| 1720 |
|
---|
| 1721 | if (isNew) {
|
---|
| 1722 | sniffer->next = ServerList;
|
---|
| 1723 | ServerList = sniffer;
|
---|
| 1724 | }
|
---|
| 1725 |
|
---|
| 1726 | return 0;
|
---|
| 1727 | }
|
---|
| 1728 |
|
---|
| 1729 |
|
---|
| 1730 | #ifdef HAVE_SNI
|
---|
| 1731 | /* Sets the private key for a specific name, server and port */
|
---|
| 1732 | /* returns 0 on success, -1 on error */
|
---|
| 1733 | int ssl_SetNamedPrivateKey(const char* name,
|
---|
| 1734 | const char* address, int port,
|
---|
| 1735 | const char* keyFile, int typeKey,
|
---|
| 1736 | const char* password, char* error)
|
---|
| 1737 | {
|
---|
| 1738 | int ret;
|
---|
| 1739 |
|
---|
| 1740 | TraceHeader();
|
---|
| 1741 | TraceSetNamedServer(name, address, port, keyFile);
|
---|
| 1742 |
|
---|
| 1743 | wc_LockMutex(&ServerListMutex);
|
---|
[464] | 1744 | ret = SetNamedPrivateKey(name, address, port, keyFile, 0,
|
---|
| 1745 | typeKey, password, error, 0);
|
---|
[457] | 1746 | wc_UnLockMutex(&ServerListMutex);
|
---|
| 1747 |
|
---|
| 1748 | if (ret == 0)
|
---|
| 1749 | Trace(NEW_SERVER_STR);
|
---|
| 1750 |
|
---|
| 1751 | return ret;
|
---|
| 1752 | }
|
---|
| 1753 |
|
---|
[464] | 1754 | int ssl_SetNamedPrivateKeyBuffer(const char* name,
|
---|
| 1755 | const char* address, int port,
|
---|
| 1756 | const char* keyBuf, int keySz, int typeKey,
|
---|
| 1757 | const char* password, char* error)
|
---|
| 1758 | {
|
---|
| 1759 | int ret;
|
---|
[457] | 1760 |
|
---|
[464] | 1761 | TraceHeader();
|
---|
| 1762 | TraceSetNamedServer(name, address, port, NULL);
|
---|
[457] | 1763 |
|
---|
[464] | 1764 | wc_LockMutex(&ServerListMutex);
|
---|
| 1765 | ret = SetNamedPrivateKey(name, address, port, keyBuf, keySz,
|
---|
| 1766 | typeKey, password, error, 0);
|
---|
| 1767 | wc_UnLockMutex(&ServerListMutex);
|
---|
| 1768 |
|
---|
| 1769 | if (ret == 0)
|
---|
| 1770 | Trace(NEW_SERVER_STR);
|
---|
| 1771 |
|
---|
| 1772 | return ret;
|
---|
| 1773 | }
|
---|
| 1774 | #endif /* HAVE_SNI */
|
---|
| 1775 |
|
---|
[457] | 1776 | /* Sets the private key for a specific server and port */
|
---|
| 1777 | /* returns 0 on success, -1 on error */
|
---|
[464] | 1778 | int ssl_SetPrivateKey(const char* address, int port,
|
---|
| 1779 | const char* keyFile, int typeKey,
|
---|
| 1780 | const char* password, char* error)
|
---|
[457] | 1781 | {
|
---|
| 1782 | int ret;
|
---|
| 1783 |
|
---|
| 1784 | TraceHeader();
|
---|
| 1785 | TraceSetServer(address, port, keyFile);
|
---|
| 1786 |
|
---|
| 1787 | wc_LockMutex(&ServerListMutex);
|
---|
[464] | 1788 | ret = SetNamedPrivateKey(NULL, address, port, keyFile, 0,
|
---|
| 1789 | typeKey, password, error, 0);
|
---|
[457] | 1790 | wc_UnLockMutex(&ServerListMutex);
|
---|
| 1791 |
|
---|
| 1792 | if (ret == 0)
|
---|
| 1793 | Trace(NEW_SERVER_STR);
|
---|
| 1794 |
|
---|
| 1795 | return ret;
|
---|
| 1796 | }
|
---|
| 1797 |
|
---|
[464] | 1798 | int ssl_SetPrivateKeyBuffer(const char* address, int port,
|
---|
| 1799 | const char* keyBuf, int keySz, int typeKey,
|
---|
| 1800 | const char* password, char* error)
|
---|
| 1801 | {
|
---|
| 1802 | int ret;
|
---|
[457] | 1803 |
|
---|
[464] | 1804 | TraceHeader();
|
---|
| 1805 | TraceSetServer(address, port, "from buffer");
|
---|
| 1806 |
|
---|
| 1807 | wc_LockMutex(&ServerListMutex);
|
---|
| 1808 | ret = SetNamedPrivateKey(NULL, address, port, keyBuf, keySz,
|
---|
| 1809 | typeKey, password, error, 0);
|
---|
| 1810 | wc_UnLockMutex(&ServerListMutex);
|
---|
| 1811 |
|
---|
| 1812 | if (ret == 0)
|
---|
| 1813 | Trace(NEW_SERVER_STR);
|
---|
| 1814 |
|
---|
| 1815 | return ret;
|
---|
| 1816 | }
|
---|
| 1817 |
|
---|
| 1818 | #ifdef WOLFSSL_STATIC_EPHEMERAL
|
---|
| 1819 | #ifdef HAVE_SNI
|
---|
| 1820 | /* Sets the ephemeral key for a specific name, server and port */
|
---|
| 1821 | /* returns 0 on success, -1 on error */
|
---|
| 1822 | int ssl_SetNamedEphemeralKey(const char* name,
|
---|
| 1823 | const char* address, int port,
|
---|
| 1824 | const char* keyFile, int typeKey,
|
---|
| 1825 | const char* password, char* error)
|
---|
| 1826 | {
|
---|
| 1827 | int ret;
|
---|
| 1828 |
|
---|
| 1829 | TraceHeader();
|
---|
| 1830 | TraceSetNamedServer(name, address, port, keyFile);
|
---|
| 1831 |
|
---|
| 1832 | wc_LockMutex(&ServerListMutex);
|
---|
| 1833 | ret = SetNamedPrivateKey(name, address, port, keyFile, 0,
|
---|
| 1834 | typeKey, password, error, 1);
|
---|
| 1835 | wc_UnLockMutex(&ServerListMutex);
|
---|
| 1836 |
|
---|
| 1837 | if (ret == 0)
|
---|
| 1838 | Trace(NEW_SERVER_STR);
|
---|
| 1839 |
|
---|
| 1840 | return ret;
|
---|
| 1841 | }
|
---|
| 1842 |
|
---|
| 1843 | int ssl_SetNamedEphemeralKeyBuffer(const char* name,
|
---|
| 1844 | const char* address, int port,
|
---|
| 1845 | const char* keyBuf, int keySz, int typeKey,
|
---|
| 1846 | const char* password, char* error)
|
---|
| 1847 | {
|
---|
| 1848 | int ret;
|
---|
| 1849 |
|
---|
| 1850 | TraceHeader();
|
---|
| 1851 | TraceSetNamedServer(name, address, port, NULL);
|
---|
| 1852 |
|
---|
| 1853 | wc_LockMutex(&ServerListMutex);
|
---|
| 1854 | ret = SetNamedPrivateKey(name, address, port, keyBuf, keySz,
|
---|
| 1855 | typeKey, password, error, 1);
|
---|
| 1856 | wc_UnLockMutex(&ServerListMutex);
|
---|
| 1857 |
|
---|
| 1858 | if (ret == 0)
|
---|
| 1859 | Trace(NEW_SERVER_STR);
|
---|
| 1860 |
|
---|
| 1861 | return ret;
|
---|
| 1862 | }
|
---|
| 1863 | #endif /* HAVE_SNI */
|
---|
| 1864 |
|
---|
| 1865 | /* Sets the ephemeral key for a specific server and port */
|
---|
| 1866 | /* returns 0 on success, -1 on error */
|
---|
| 1867 | int ssl_SetEphemeralKey(const char* address, int port,
|
---|
| 1868 | const char* keyFile, int typeKey,
|
---|
| 1869 | const char* password, char* error)
|
---|
| 1870 | {
|
---|
| 1871 | int ret;
|
---|
| 1872 |
|
---|
| 1873 | TraceHeader();
|
---|
| 1874 | TraceSetServer(address, port, keyFile);
|
---|
| 1875 |
|
---|
| 1876 | wc_LockMutex(&ServerListMutex);
|
---|
| 1877 | ret = SetNamedPrivateKey(NULL, address, port, keyFile, 0,
|
---|
| 1878 | typeKey, password, error, 1);
|
---|
| 1879 | wc_UnLockMutex(&ServerListMutex);
|
---|
| 1880 |
|
---|
| 1881 | if (ret == 0)
|
---|
| 1882 | Trace(NEW_SERVER_STR);
|
---|
| 1883 |
|
---|
| 1884 | return ret;
|
---|
| 1885 | }
|
---|
| 1886 |
|
---|
| 1887 | int ssl_SetEphemeralKeyBuffer(const char* address, int port,
|
---|
| 1888 | const char* keyBuf, int keySz, int typeKey,
|
---|
| 1889 | const char* password, char* error)
|
---|
| 1890 | {
|
---|
| 1891 | int ret;
|
---|
| 1892 |
|
---|
| 1893 | TraceHeader();
|
---|
| 1894 | TraceSetServer(address, port, "from buffer");
|
---|
| 1895 |
|
---|
| 1896 | wc_LockMutex(&ServerListMutex);
|
---|
| 1897 | ret = SetNamedPrivateKey(NULL, address, port, keyBuf, keySz,
|
---|
| 1898 | typeKey, password, error, 1);
|
---|
| 1899 | wc_UnLockMutex(&ServerListMutex);
|
---|
| 1900 |
|
---|
| 1901 | if (ret == 0)
|
---|
| 1902 | Trace(NEW_SERVER_STR);
|
---|
| 1903 |
|
---|
| 1904 | return ret;
|
---|
| 1905 | }
|
---|
| 1906 | #endif /* WOLFSSL_STATIC_EPHEMERAL */
|
---|
| 1907 |
|
---|
[457] | 1908 | /* Check IP Header for IPV6, TCP, and a registered server address */
|
---|
| 1909 | /* returns 0 on success, -1 on error */
|
---|
| 1910 | static int CheckIp6Hdr(Ip6Hdr* iphdr, IpInfo* info, int length, char* error)
|
---|
| 1911 | {
|
---|
| 1912 | int version = IP_V(iphdr);
|
---|
| 1913 | int exthdrsz = IP6_HDR_SZ;
|
---|
| 1914 |
|
---|
| 1915 | TraceIP6(iphdr);
|
---|
| 1916 | Trace(IP_CHECK_STR);
|
---|
| 1917 |
|
---|
| 1918 | if (version != IPV6) {
|
---|
| 1919 | SetError(BAD_IPVER_STR, error, NULL, 0);
|
---|
| 1920 | return -1;
|
---|
| 1921 | }
|
---|
| 1922 |
|
---|
| 1923 | /* Here, we need to move onto next header if not TCP. */
|
---|
| 1924 | if (iphdr->next_header != TCP_PROTOCOL) {
|
---|
| 1925 | Ip6ExtHdr* exthdr = (Ip6ExtHdr*)((byte*)iphdr + IP6_HDR_SZ);
|
---|
| 1926 | do {
|
---|
| 1927 | int hdrsz = (exthdr->length + 1) * 8;
|
---|
| 1928 | if (hdrsz > length - exthdrsz) {
|
---|
| 1929 | SetError(PACKET_HDR_SHORT_STR, error, NULL, 0);
|
---|
| 1930 | return -1;
|
---|
| 1931 | }
|
---|
| 1932 | exthdrsz += hdrsz;
|
---|
| 1933 | exthdr = (Ip6ExtHdr*)((byte*)exthdr + hdrsz);
|
---|
| 1934 | }
|
---|
| 1935 | while (exthdr->next_header != TCP_PROTOCOL &&
|
---|
| 1936 | exthdr->next_header != NO_NEXT_HEADER);
|
---|
| 1937 | }
|
---|
| 1938 |
|
---|
| 1939 | #ifndef WOLFSSL_SNIFFER_WATCH
|
---|
| 1940 | if (!IsServerRegistered6(iphdr->src) && !IsServerRegistered6(iphdr->dst)) {
|
---|
| 1941 | SetError(SERVER_NOT_REG_STR, error, NULL, 0);
|
---|
| 1942 | return -1;
|
---|
| 1943 | }
|
---|
| 1944 | #endif
|
---|
| 1945 |
|
---|
| 1946 | info->length = exthdrsz;
|
---|
[464] | 1947 | info->total = XNTOHS(iphdr->length) + info->length;
|
---|
| 1948 | /* IPv6 doesn't include its own header size in the length like v4. */
|
---|
[457] | 1949 | info->src.version = IPV6;
|
---|
| 1950 | XMEMCPY(info->src.ip6, iphdr->src, sizeof(info->src.ip6));
|
---|
| 1951 | info->dst.version = IPV6;
|
---|
| 1952 | XMEMCPY(info->dst.ip6, iphdr->dst, sizeof(info->dst.ip6));
|
---|
| 1953 |
|
---|
| 1954 | return 0;
|
---|
| 1955 | }
|
---|
| 1956 |
|
---|
| 1957 |
|
---|
| 1958 | /* Check IP Header for IPV4, TCP, and a registered server address */
|
---|
| 1959 | /* If header IPv6, pass to CheckIp6Hdr(). */
|
---|
| 1960 | /* returns 0 on success, -1 on error */
|
---|
| 1961 | static int CheckIpHdr(IpHdr* iphdr, IpInfo* info, int length, char* error)
|
---|
| 1962 | {
|
---|
[464] | 1963 | int version = IP_V(iphdr);
|
---|
[457] | 1964 |
|
---|
| 1965 | if (version == IPV6)
|
---|
| 1966 | return CheckIp6Hdr((Ip6Hdr*)iphdr, info, length, error);
|
---|
| 1967 |
|
---|
| 1968 | TraceIP(iphdr);
|
---|
| 1969 | Trace(IP_CHECK_STR);
|
---|
| 1970 |
|
---|
| 1971 | if (version != IPV4) {
|
---|
| 1972 | SetError(BAD_IPVER_STR, error, NULL, 0);
|
---|
| 1973 | return -1;
|
---|
| 1974 | }
|
---|
| 1975 |
|
---|
| 1976 | if (iphdr->protocol != TCP_PROTOCOL) {
|
---|
| 1977 | SetError(BAD_PROTO_STR, error, NULL, 0);
|
---|
| 1978 | return -1;
|
---|
| 1979 | }
|
---|
| 1980 |
|
---|
| 1981 | #ifndef WOLFSSL_SNIFFER_WATCH
|
---|
| 1982 | if (!IsServerRegistered(iphdr->src) && !IsServerRegistered(iphdr->dst)) {
|
---|
| 1983 | SetError(SERVER_NOT_REG_STR, error, NULL, 0);
|
---|
| 1984 | return -1;
|
---|
| 1985 | }
|
---|
| 1986 | #endif
|
---|
| 1987 |
|
---|
| 1988 | info->length = IP_HL(iphdr);
|
---|
[464] | 1989 | info->total = XNTOHS(iphdr->length);
|
---|
[457] | 1990 | info->src.version = IPV4;
|
---|
| 1991 | info->src.ip4 = iphdr->src;
|
---|
| 1992 | info->dst.version = IPV4;
|
---|
| 1993 | info->dst.ip4 = iphdr->dst;
|
---|
| 1994 |
|
---|
| 1995 | if (info->total == 0)
|
---|
| 1996 | info->total = length; /* reassembled may be off */
|
---|
| 1997 |
|
---|
| 1998 | return 0;
|
---|
| 1999 | }
|
---|
| 2000 |
|
---|
| 2001 |
|
---|
| 2002 | /* Check TCP Header for a registered port */
|
---|
| 2003 | /* returns 0 on success, -1 on error */
|
---|
| 2004 | static int CheckTcpHdr(TcpHdr* tcphdr, TcpInfo* info, char* error)
|
---|
| 2005 | {
|
---|
| 2006 | TraceTcp(tcphdr);
|
---|
| 2007 | Trace(TCP_CHECK_STR);
|
---|
[464] | 2008 | info->srcPort = XNTOHS(tcphdr->srcPort);
|
---|
| 2009 | info->dstPort = XNTOHS(tcphdr->dstPort);
|
---|
[457] | 2010 | info->length = TCP_LEN(tcphdr);
|
---|
[464] | 2011 | info->sequence = XNTOHL(tcphdr->sequence);
|
---|
[457] | 2012 | info->fin = tcphdr->flags & TCP_FIN;
|
---|
| 2013 | info->rst = tcphdr->flags & TCP_RST;
|
---|
| 2014 | info->syn = tcphdr->flags & TCP_SYN;
|
---|
| 2015 | info->ack = tcphdr->flags & TCP_ACK;
|
---|
| 2016 | if (info->ack)
|
---|
[464] | 2017 | info->ackNumber = XNTOHL(tcphdr->ack);
|
---|
[457] | 2018 |
|
---|
| 2019 | #ifndef WOLFSSL_SNIFFER_WATCH
|
---|
| 2020 | if (!IsPortRegistered(info->srcPort) && !IsPortRegistered(info->dstPort)) {
|
---|
| 2021 | SetError(SERVER_PORT_NOT_REG_STR, error, NULL, 0);
|
---|
| 2022 | return -1;
|
---|
| 2023 | }
|
---|
| 2024 | #else
|
---|
| 2025 | (void)error;
|
---|
| 2026 | #endif
|
---|
| 2027 |
|
---|
| 2028 | return 0;
|
---|
| 2029 | }
|
---|
| 2030 |
|
---|
| 2031 |
|
---|
| 2032 | /* Decode Record Layer Header */
|
---|
| 2033 | static int GetRecordHeader(const byte* input, RecordLayerHeader* rh, int* size)
|
---|
| 2034 | {
|
---|
| 2035 | XMEMCPY(rh, input, RECORD_HEADER_SZ);
|
---|
| 2036 | *size = (rh->length[0] << 8) | rh->length[1];
|
---|
| 2037 |
|
---|
| 2038 | if (*size > (MAX_RECORD_SIZE + COMP_EXTRA + MAX_MSG_EXTRA))
|
---|
| 2039 | return LENGTH_ERROR;
|
---|
| 2040 |
|
---|
| 2041 | return 0;
|
---|
| 2042 | }
|
---|
| 2043 |
|
---|
| 2044 |
|
---|
| 2045 | /* Copies the session's information to the provided sslInfo. Skip copy if
|
---|
| 2046 | * SSLInfo is not provided. */
|
---|
| 2047 | static void CopySessionInfo(SnifferSession* session, SSLInfo* sslInfo)
|
---|
| 2048 | {
|
---|
| 2049 | if (NULL != sslInfo) {
|
---|
| 2050 | XMEMSET(sslInfo, 0, sizeof(SSLInfo));
|
---|
| 2051 |
|
---|
| 2052 | /* Pass back Session Info after we have processed the Server Hello. */
|
---|
| 2053 | if (0 != session->sslServer->options.cipherSuite) {
|
---|
| 2054 | const char* pCipher;
|
---|
| 2055 |
|
---|
| 2056 | sslInfo->isValid = 1;
|
---|
| 2057 | sslInfo->protocolVersionMajor = session->sslServer->version.major;
|
---|
| 2058 | sslInfo->protocolVersionMinor = session->sslServer->version.minor;
|
---|
| 2059 | sslInfo->serverCipherSuite0 =
|
---|
| 2060 | session->sslServer->options.cipherSuite0;
|
---|
| 2061 | sslInfo->serverCipherSuite =
|
---|
| 2062 | session->sslServer->options.cipherSuite;
|
---|
| 2063 |
|
---|
| 2064 | pCipher = wolfSSL_get_cipher(session->sslServer);
|
---|
| 2065 | if (NULL != pCipher) {
|
---|
| 2066 | XSTRNCPY((char*)sslInfo->serverCipherSuiteName, pCipher,
|
---|
| 2067 | sizeof(sslInfo->serverCipherSuiteName));
|
---|
| 2068 | sslInfo->serverCipherSuiteName
|
---|
| 2069 | [sizeof(sslInfo->serverCipherSuiteName) - 1] = '\0';
|
---|
| 2070 | }
|
---|
| 2071 | sslInfo->keySize = session->keySz;
|
---|
[464] | 2072 | #ifdef HAVE_SNI
|
---|
[457] | 2073 | if (NULL != session->sni) {
|
---|
| 2074 | XSTRNCPY((char*)sslInfo->serverNameIndication,
|
---|
| 2075 | session->sni, sizeof(sslInfo->serverNameIndication));
|
---|
| 2076 | sslInfo->serverNameIndication
|
---|
| 2077 | [sizeof(sslInfo->serverNameIndication) - 1] = '\0';
|
---|
| 2078 | }
|
---|
[464] | 2079 | #endif
|
---|
[457] | 2080 | TraceSessionInfo(sslInfo);
|
---|
| 2081 | }
|
---|
| 2082 | }
|
---|
| 2083 | }
|
---|
| 2084 |
|
---|
| 2085 |
|
---|
| 2086 | /* Call the session connection start callback. */
|
---|
| 2087 | static void CallConnectionCb(SnifferSession* session)
|
---|
| 2088 | {
|
---|
| 2089 | if (ConnectionCb != NULL) {
|
---|
| 2090 | SSLInfo info;
|
---|
| 2091 | CopySessionInfo(session, &info);
|
---|
| 2092 | ConnectionCb((const void*)session, &info, ConnectionCbCtx);
|
---|
| 2093 | }
|
---|
| 2094 | }
|
---|
| 2095 |
|
---|
[464] | 2096 | #ifdef SHOW_SECRETS
|
---|
| 2097 | static void PrintSecret(const char* desc, const byte* buf, int sz)
|
---|
| 2098 | {
|
---|
| 2099 | int i;
|
---|
| 2100 | printf("%s: ", desc);
|
---|
| 2101 | for (i = 0; i < sz; i++) {
|
---|
| 2102 | printf("%02x", buf[i]);
|
---|
| 2103 | }
|
---|
| 2104 | printf("\n");
|
---|
| 2105 | }
|
---|
[457] | 2106 |
|
---|
[464] | 2107 | static void ShowTlsSecrets(SnifferSession* session)
|
---|
[457] | 2108 | {
|
---|
[464] | 2109 | PrintSecret("server master secret", session->sslServer->arrays->masterSecret, SECRET_LEN);
|
---|
| 2110 | PrintSecret("client master secret", session->sslClient->arrays->masterSecret, SECRET_LEN);
|
---|
| 2111 | printf("server suite = %d\n", session->sslServer->options.cipherSuite);
|
---|
| 2112 | printf("client suite = %d\n", session->sslClient->options.cipherSuite);
|
---|
| 2113 | }
|
---|
| 2114 | #endif /* SHOW_SECRETS */
|
---|
| 2115 |
|
---|
| 2116 |
|
---|
| 2117 | /* Process Keys */
|
---|
| 2118 |
|
---|
| 2119 | /* contains static ephemeral keys */
|
---|
| 2120 | typedef struct {
|
---|
| 2121 | #ifndef NO_DH
|
---|
| 2122 | DerBuffer* dhKey;
|
---|
| 2123 | #endif
|
---|
| 2124 | #ifdef HAVE_ECC
|
---|
| 2125 | DerBuffer* ecKey;
|
---|
| 2126 | #endif
|
---|
| 2127 | #if !defined(NO_RSA) && defined(WOLFSSL_STATIC_RSA)
|
---|
| 2128 | DerBuffer* rsaKey;
|
---|
| 2129 | #endif
|
---|
| 2130 | } KeyBuffers_t;
|
---|
| 2131 |
|
---|
| 2132 | static int SetupKeys(const byte* input, int* sslBytes, SnifferSession* session,
|
---|
| 2133 | char* error, KeyShareInfo* ksInfo, KeyBuffers_t* keys)
|
---|
| 2134 | {
|
---|
[457] | 2135 | word32 idx = 0;
|
---|
| 2136 | int ret;
|
---|
[464] | 2137 | DerBuffer* keyBuf;
|
---|
| 2138 | #ifdef HAVE_ECC
|
---|
| 2139 | int useEccCurveId = ECC_CURVE_DEF;
|
---|
| 2140 | if (ksInfo && ksInfo->curve_id != 0)
|
---|
| 2141 | useEccCurveId = ksInfo->curve_id;
|
---|
| 2142 | #endif
|
---|
[457] | 2143 |
|
---|
[464] | 2144 | #ifndef NO_RSA
|
---|
| 2145 | /* Static RSA */
|
---|
| 2146 | if (ksInfo == NULL && keys->rsaKey) {
|
---|
[457] | 2147 | RsaKey key;
|
---|
| 2148 | int length;
|
---|
| 2149 |
|
---|
[464] | 2150 | keyBuf = keys->rsaKey;
|
---|
| 2151 |
|
---|
[457] | 2152 | ret = wc_InitRsaKey(&key, 0);
|
---|
| 2153 | if (ret == 0) {
|
---|
[464] | 2154 | ret = wc_RsaPrivateKeyDecode(keyBuf->buffer, &idx, &key, keyBuf->length);
|
---|
[457] | 2155 | if (ret != 0) {
|
---|
[464] | 2156 | #ifndef HAVE_ECC
|
---|
| 2157 | SetError(RSA_DECODE_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2158 | #else
|
---|
| 2159 | /* If we can do ECC, this isn't fatal. Not loading an ECC
|
---|
| 2160 | * key will be fatal, though. */
|
---|
| 2161 | SetError(RSA_DECODE_STR, error, session, 0);
|
---|
| 2162 | if (keys->ecKey == NULL)
|
---|
| 2163 | keys->ecKey = session->sslServer->buffers.key; /* try ECC */
|
---|
| 2164 | #endif
|
---|
[457] | 2165 | }
|
---|
[464] | 2166 | #ifdef HAVE_ECC
|
---|
| 2167 | else {
|
---|
| 2168 | useEccCurveId = -1; /* don't try loading ECC */
|
---|
| 2169 | }
|
---|
| 2170 | #endif
|
---|
[457] | 2171 | }
|
---|
| 2172 |
|
---|
| 2173 | if (ret == 0) {
|
---|
| 2174 | length = wc_RsaEncryptSize(&key);
|
---|
| 2175 | if (IsTLS(session->sslServer)) {
|
---|
| 2176 | input += 2; /* tls pre length */
|
---|
| 2177 | }
|
---|
| 2178 |
|
---|
| 2179 | if (length > *sslBytes) {
|
---|
| 2180 | SetError(PARTIAL_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2181 | ret = -1;
|
---|
| 2182 | }
|
---|
| 2183 | }
|
---|
| 2184 |
|
---|
| 2185 | #ifdef WC_RSA_BLINDING
|
---|
| 2186 | if (ret == 0) {
|
---|
| 2187 | ret = wc_RsaSetRNG(&key, session->sslServer->rng);
|
---|
| 2188 | if (ret != 0) {
|
---|
| 2189 | SetError(RSA_DECRYPT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2190 | }
|
---|
| 2191 | }
|
---|
| 2192 | #endif
|
---|
| 2193 |
|
---|
| 2194 | if (ret == 0) {
|
---|
| 2195 | session->keySz = length * WOLFSSL_BIT_SIZE;
|
---|
| 2196 | /* length is the key size in bytes */
|
---|
| 2197 | session->sslServer->arrays->preMasterSz = SECRET_LEN;
|
---|
| 2198 |
|
---|
| 2199 | do {
|
---|
| 2200 | #ifdef WOLFSSL_ASYNC_CRYPT
|
---|
| 2201 | ret = wc_AsyncWait(ret, &key.asyncDev,
|
---|
| 2202 | WC_ASYNC_FLAG_CALL_AGAIN);
|
---|
| 2203 | #endif
|
---|
| 2204 | if (ret >= 0) {
|
---|
| 2205 | ret = wc_RsaPrivateDecrypt(input, length,
|
---|
| 2206 | session->sslServer->arrays->preMasterSecret,
|
---|
| 2207 | session->sslServer->arrays->preMasterSz, &key);
|
---|
| 2208 | }
|
---|
| 2209 | } while (ret == WC_PENDING_E);
|
---|
| 2210 |
|
---|
| 2211 | if (ret != SECRET_LEN) {
|
---|
| 2212 | SetError(RSA_DECRYPT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2213 | }
|
---|
| 2214 | }
|
---|
| 2215 |
|
---|
| 2216 | wc_FreeRsaKey(&key);
|
---|
| 2217 | }
|
---|
[464] | 2218 | #endif /* !NO_RSA */
|
---|
[457] | 2219 |
|
---|
[464] | 2220 | #if !defined(NO_DH) && defined(WOLFSSL_DH_EXTRA)
|
---|
| 2221 | /* Static DH Key */
|
---|
| 2222 | if (ksInfo && ksInfo->dh_key_bits != 0 && keys->dhKey) {
|
---|
| 2223 | DhKey dhKey;
|
---|
| 2224 | const DhParams* params;
|
---|
| 2225 | word32 privKeySz;
|
---|
| 2226 | byte privKey[52]; /* max for TLS */
|
---|
| 2227 |
|
---|
| 2228 | keyBuf = keys->dhKey;
|
---|
| 2229 |
|
---|
| 2230 | /* get DH params */
|
---|
| 2231 | switch (ksInfo->named_group) {
|
---|
| 2232 | #ifdef HAVE_FFDHE_2048
|
---|
| 2233 | case WOLFSSL_FFDHE_2048:
|
---|
| 2234 | params = wc_Dh_ffdhe2048_Get();
|
---|
| 2235 | privKeySz = 29;
|
---|
| 2236 | break;
|
---|
| 2237 | #endif
|
---|
| 2238 | #ifdef HAVE_FFDHE_3072
|
---|
| 2239 | case WOLFSSL_FFDHE_3072:
|
---|
| 2240 | params = wc_Dh_ffdhe3072_Get();
|
---|
| 2241 | privKeySz = 34;
|
---|
| 2242 | break;
|
---|
| 2243 | #endif
|
---|
| 2244 | #ifdef HAVE_FFDHE_4096
|
---|
| 2245 | case WOLFSSL_FFDHE_4096:
|
---|
| 2246 | params = wc_Dh_ffdhe4096_Get();
|
---|
| 2247 | privKeySz = 39;
|
---|
| 2248 | break;
|
---|
| 2249 | #endif
|
---|
| 2250 | #ifdef HAVE_FFDHE_6144
|
---|
| 2251 | case WOLFSSL_FFDHE_6144:
|
---|
| 2252 | params = wc_Dh_ffdhe6144_Get();
|
---|
| 2253 | privKeySz = 46;
|
---|
| 2254 | break;
|
---|
| 2255 | #endif
|
---|
| 2256 | #ifdef HAVE_FFDHE_8192
|
---|
| 2257 | case WOLFSSL_FFDHE_8192:
|
---|
| 2258 | params = wc_Dh_ffdhe8192_Get();
|
---|
| 2259 | privKeySz = 52;
|
---|
| 2260 | break;
|
---|
| 2261 | #endif
|
---|
| 2262 | default:
|
---|
| 2263 | return BAD_FUNC_ARG;
|
---|
| 2264 | }
|
---|
| 2265 |
|
---|
| 2266 | ret = wc_InitDhKey(&dhKey);
|
---|
| 2267 | if (ret == 0) {
|
---|
| 2268 | ret = wc_DhSetKey(&dhKey,
|
---|
| 2269 | (byte*)params->p, params->p_len,
|
---|
| 2270 | (byte*)params->g, params->g_len);
|
---|
| 2271 | if (ret == 0) {
|
---|
| 2272 | ret = wc_DhKeyDecode(keyBuf->buffer, &idx, &dhKey,
|
---|
| 2273 | keyBuf->length);
|
---|
| 2274 | }
|
---|
| 2275 | if (ret == 0) {
|
---|
| 2276 | ret = wc_DhExportKeyPair(&dhKey, privKey, &privKeySz, NULL,
|
---|
| 2277 | NULL);
|
---|
| 2278 | }
|
---|
| 2279 |
|
---|
| 2280 | /* Derive secret from private key and peer's public key */
|
---|
| 2281 | do {
|
---|
| 2282 | #ifdef WOLFSSL_ASYNC_CRYPT
|
---|
| 2283 | ret = wc_AsyncWait(ret, &dhPriv.asyncDev,
|
---|
| 2284 | WC_ASYNC_FLAG_CALL_AGAIN);
|
---|
| 2285 | #endif
|
---|
| 2286 | if (ret >= 0) {
|
---|
| 2287 | ret = wc_DhAgree(&dhKey,
|
---|
| 2288 | session->sslServer->arrays->preMasterSecret,
|
---|
| 2289 | &session->sslServer->arrays->preMasterSz,
|
---|
| 2290 | privKey, privKeySz,
|
---|
| 2291 | input, *sslBytes);
|
---|
| 2292 | }
|
---|
| 2293 | } while (ret == WC_PENDING_E);
|
---|
| 2294 |
|
---|
| 2295 | wc_FreeDhKey(&dhKey);
|
---|
| 2296 |
|
---|
| 2297 | /* left-padded with zeros up to the size of the prime */
|
---|
| 2298 | if (params->p_len > session->sslServer->arrays->preMasterSz) {
|
---|
| 2299 | word32 diff = params->p_len - session->sslServer->arrays->preMasterSz;
|
---|
| 2300 | XMEMMOVE(session->sslServer->arrays->preMasterSecret + diff,
|
---|
| 2301 | session->sslServer->arrays->preMasterSecret,
|
---|
| 2302 | session->sslServer->arrays->preMasterSz);
|
---|
| 2303 | XMEMSET(session->sslServer->arrays->preMasterSecret, 0, diff);
|
---|
| 2304 | session->sslServer->arrays->preMasterSz = params->p_len;
|
---|
| 2305 | }
|
---|
| 2306 | }
|
---|
| 2307 | }
|
---|
| 2308 | #endif /* !NO_DH && WOLFSSL_DH_EXTRA */
|
---|
| 2309 |
|
---|
[457] | 2310 | #ifdef HAVE_ECC
|
---|
[464] | 2311 | /* Static ECC Key */
|
---|
| 2312 | if (useEccCurveId >= ECC_CURVE_DEF && keys->ecKey) {
|
---|
[457] | 2313 | ecc_key key;
|
---|
| 2314 | ecc_key pubKey;
|
---|
| 2315 | int length, keyInit = 0, pubKeyInit = 0;
|
---|
| 2316 |
|
---|
[464] | 2317 | keyBuf = keys->ecKey;
|
---|
[457] | 2318 | idx = 0;
|
---|
| 2319 | ret = wc_ecc_init(&key);
|
---|
| 2320 | if (ret == 0) {
|
---|
| 2321 | keyInit = 1;
|
---|
| 2322 | ret = wc_ecc_init(&pubKey);
|
---|
| 2323 | }
|
---|
[464] | 2324 |
|
---|
| 2325 | #if defined(ECC_TIMING_RESISTANT) && (!defined(HAVE_FIPS) || \
|
---|
| 2326 | (!defined(HAVE_FIPS_VERSION) || (HAVE_FIPS_VERSION != 2))) && \
|
---|
| 2327 | !defined(HAVE_SELFTEST)
|
---|
[457] | 2328 | if (ret == 0) {
|
---|
[464] | 2329 | ret = wc_ecc_set_rng(&key, session->sslServer->rng);
|
---|
| 2330 | }
|
---|
| 2331 | #endif
|
---|
| 2332 |
|
---|
| 2333 | if (ret == 0) {
|
---|
[457] | 2334 | pubKeyInit = 1;
|
---|
[464] | 2335 | ret = wc_EccPrivateKeyDecode(keyBuf->buffer, &idx, &key, keyBuf->length);
|
---|
[457] | 2336 | if (ret != 0) {
|
---|
| 2337 | SetError(ECC_DECODE_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2338 | }
|
---|
| 2339 | }
|
---|
| 2340 |
|
---|
| 2341 | if (ret == 0) {
|
---|
| 2342 | length = wc_ecc_size(&key) * 2 + 1;
|
---|
| 2343 | /* The length should be 2 times the key size (x and y), plus 1
|
---|
| 2344 | * for the type byte. */
|
---|
[464] | 2345 | if (!IsAtLeastTLSv1_3(session->sslServer->version)) {
|
---|
[457] | 2346 | input += 1; /* Don't include the TLS length for the key. */
|
---|
| 2347 | }
|
---|
| 2348 |
|
---|
[464] | 2349 | if (length > *sslBytes) {
|
---|
| 2350 | SetError(PARTIAL_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
[457] | 2351 | ret = -1;
|
---|
| 2352 | }
|
---|
[464] | 2353 |
|
---|
| 2354 | /* if curve not provided in key share data, then use private key curve */
|
---|
| 2355 | if (useEccCurveId == ECC_CURVE_DEF && key.dp) {
|
---|
| 2356 | useEccCurveId = key.dp->id;
|
---|
| 2357 | }
|
---|
[457] | 2358 | }
|
---|
| 2359 |
|
---|
| 2360 | if (ret == 0) {
|
---|
[464] | 2361 | ret = wc_ecc_import_x963_ex(input, length, &pubKey, useEccCurveId);
|
---|
[457] | 2362 | if (ret != 0) {
|
---|
| 2363 | SetError(ECC_PUB_DECODE_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2364 | }
|
---|
| 2365 | }
|
---|
| 2366 |
|
---|
| 2367 | if (ret == 0) {
|
---|
| 2368 | session->keySz = ((length - 1) / 2) * WOLFSSL_BIT_SIZE;
|
---|
| 2369 | /* Length is in bytes. Subtract 1 for the ECC key type. Divide
|
---|
| 2370 | * by two as the key is in (x,y) coordinates, where x and y are
|
---|
| 2371 | * the same size, the key size. Convert from bytes to bits. */
|
---|
| 2372 | session->sslServer->arrays->preMasterSz = ENCRYPT_LEN;
|
---|
| 2373 |
|
---|
| 2374 | do {
|
---|
| 2375 | #ifdef WOLFSSL_ASYNC_CRYPT
|
---|
| 2376 | ret = wc_AsyncWait(ret, &key.asyncDev,
|
---|
| 2377 | WC_ASYNC_FLAG_CALL_AGAIN);
|
---|
| 2378 | #endif
|
---|
| 2379 | if (ret >= 0) {
|
---|
| 2380 | ret = wc_ecc_shared_secret(&key, &pubKey,
|
---|
| 2381 | session->sslServer->arrays->preMasterSecret,
|
---|
| 2382 | &session->sslServer->arrays->preMasterSz);
|
---|
| 2383 | }
|
---|
| 2384 | } while (ret == WC_PENDING_E);
|
---|
| 2385 | }
|
---|
| 2386 |
|
---|
| 2387 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 2388 | if (ret != 0)
|
---|
| 2389 | INC_STAT(SnifferStats.sslKeyFails);
|
---|
| 2390 | #endif
|
---|
| 2391 |
|
---|
| 2392 | if (keyInit)
|
---|
| 2393 | wc_ecc_free(&key);
|
---|
| 2394 | if (pubKeyInit)
|
---|
| 2395 | wc_ecc_free(&pubKey);
|
---|
| 2396 | }
|
---|
[464] | 2397 | #endif /* HAVE_ECC */
|
---|
[457] | 2398 |
|
---|
| 2399 | /* store for client side as well */
|
---|
| 2400 | XMEMCPY(session->sslClient->arrays->preMasterSecret,
|
---|
| 2401 | session->sslServer->arrays->preMasterSecret,
|
---|
| 2402 | session->sslServer->arrays->preMasterSz);
|
---|
| 2403 | session->sslClient->arrays->preMasterSz =
|
---|
| 2404 | session->sslServer->arrays->preMasterSz;
|
---|
| 2405 |
|
---|
[464] | 2406 | #ifdef SHOW_SECRETS
|
---|
| 2407 | PrintSecret("pre master secret",
|
---|
| 2408 | session->sslServer->arrays->preMasterSecret,
|
---|
| 2409 | session->sslServer->arrays->preMasterSz);
|
---|
| 2410 | #endif
|
---|
[457] | 2411 |
|
---|
| 2412 | if (SetCipherSpecs(session->sslServer) != 0) {
|
---|
| 2413 | SetError(BAD_CIPHER_SPEC_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2414 | return -1;
|
---|
| 2415 | }
|
---|
| 2416 |
|
---|
| 2417 | if (SetCipherSpecs(session->sslClient) != 0) {
|
---|
| 2418 | SetError(BAD_CIPHER_SPEC_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2419 | return -1;
|
---|
| 2420 | }
|
---|
| 2421 |
|
---|
[464] | 2422 | #ifdef WOLFSSL_TLS13
|
---|
| 2423 | /* TLS v1.3 derive handshake key */
|
---|
| 2424 | if (IsAtLeastTLSv1_3(session->sslServer->version)) {
|
---|
| 2425 | ret = DeriveEarlySecret(session->sslServer);
|
---|
| 2426 | ret += DeriveEarlySecret(session->sslClient);
|
---|
| 2427 | ret += DeriveHandshakeSecret(session->sslServer);
|
---|
| 2428 | ret += DeriveHandshakeSecret(session->sslClient);
|
---|
| 2429 | ret += DeriveTls13Keys(session->sslServer, handshake_key, ENCRYPT_AND_DECRYPT_SIDE, 1);
|
---|
| 2430 | ret += DeriveTls13Keys(session->sslClient, handshake_key, ENCRYPT_AND_DECRYPT_SIDE, 1);
|
---|
| 2431 | #ifdef WOLFSSL_EARLY_DATA
|
---|
| 2432 | ret += SetKeysSide(session->sslServer, DECRYPT_SIDE_ONLY);
|
---|
| 2433 | ret += SetKeysSide(session->sslClient, DECRYPT_SIDE_ONLY);
|
---|
| 2434 | #else
|
---|
| 2435 | ret += SetKeysSide(session->sslServer, ENCRYPT_AND_DECRYPT_SIDE);
|
---|
| 2436 | ret += SetKeysSide(session->sslClient, ENCRYPT_AND_DECRYPT_SIDE);
|
---|
| 2437 | #endif
|
---|
| 2438 | }
|
---|
| 2439 | else
|
---|
| 2440 | #endif
|
---|
| 2441 | {
|
---|
| 2442 | ret = MakeMasterSecret(session->sslServer);
|
---|
| 2443 | ret += MakeMasterSecret(session->sslClient);
|
---|
| 2444 | ret += SetKeysSide(session->sslServer, ENCRYPT_AND_DECRYPT_SIDE);
|
---|
| 2445 | ret += SetKeysSide(session->sslClient, ENCRYPT_AND_DECRYPT_SIDE);
|
---|
| 2446 | }
|
---|
[457] | 2447 | if (ret != 0) {
|
---|
| 2448 | SetError(BAD_DERIVE_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2449 | return -1;
|
---|
| 2450 | }
|
---|
| 2451 |
|
---|
| 2452 | #ifdef SHOW_SECRETS
|
---|
[464] | 2453 | #ifdef WOLFSSL_TLS13
|
---|
| 2454 | if (!IsAtLeastTLSv1_3(session->sslServer->version))
|
---|
| 2455 | #endif
|
---|
| 2456 | ShowTlsSecrets(session);
|
---|
| 2457 | #endif
|
---|
[457] | 2458 |
|
---|
[464] | 2459 | CallConnectionCb(session);
|
---|
[457] | 2460 |
|
---|
[464] | 2461 | return ret;
|
---|
| 2462 | }
|
---|
| 2463 |
|
---|
| 2464 | /* Process Client Key Exchange, static RSA */
|
---|
| 2465 | static int ProcessClientKeyExchange(const byte* input, int* sslBytes,
|
---|
| 2466 | SnifferSession* session, char* error)
|
---|
| 2467 | {
|
---|
| 2468 | KeyBuffers_t keys;
|
---|
| 2469 |
|
---|
| 2470 | if (session->sslServer->buffers.key == NULL ||
|
---|
| 2471 | session->sslServer->buffers.key->buffer == NULL ||
|
---|
| 2472 | session->sslServer->buffers.key->length == 0) {
|
---|
| 2473 |
|
---|
| 2474 | SetError(RSA_KEY_MISSING_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2475 | return -1;
|
---|
[457] | 2476 | }
|
---|
[464] | 2477 |
|
---|
| 2478 | XMEMSET(&keys, 0, sizeof(keys));
|
---|
| 2479 | #ifdef WOLFSSL_STATIC_EPHEMERAL
|
---|
| 2480 | #ifndef NO_DH
|
---|
| 2481 | keys.dhKey = session->sslServer->staticKE.dhKey;
|
---|
| 2482 | #endif
|
---|
| 2483 | #ifdef HAVE_ECC
|
---|
| 2484 | keys.ecKey = session->sslServer->staticKE.ecKey;
|
---|
| 2485 | #endif
|
---|
[457] | 2486 | #endif
|
---|
[464] | 2487 | keys.rsaKey = session->sslServer->buffers.key;
|
---|
| 2488 | return SetupKeys(input, sslBytes, session, error, NULL, &keys);
|
---|
| 2489 | }
|
---|
[457] | 2490 |
|
---|
[464] | 2491 | #ifdef WOLFSSL_TLS13
|
---|
| 2492 | static int ProcessKeyShare(KeyShareInfo* info, const byte* input, int len,
|
---|
| 2493 | word16 filter_group)
|
---|
| 2494 | {
|
---|
| 2495 | int index = 0;
|
---|
| 2496 | while (index < len) {
|
---|
| 2497 | /* clear info (reset dh_key_bits and curve_id) */
|
---|
| 2498 | XMEMSET(info, 0, sizeof(KeyShareInfo));
|
---|
[457] | 2499 |
|
---|
[464] | 2500 | /* Named group and public key */
|
---|
| 2501 | info->named_group = (word16)((input[index] << 8) | input[index+1]);
|
---|
| 2502 | index += OPAQUE16_LEN;
|
---|
| 2503 | info->key_len = 0;
|
---|
| 2504 | info->key = NULL;
|
---|
| 2505 | /* If key was provided... (a hello_retry_request will not send a key) */
|
---|
| 2506 | if (index + 2 <= len) {
|
---|
| 2507 | info->key_len = (word16)((input[index] << 8) | input[index+1]);
|
---|
| 2508 | index += OPAQUE16_LEN;
|
---|
| 2509 | if (info->key_len == 0 || info->key_len > len - index) {
|
---|
| 2510 | return -1;
|
---|
| 2511 | }
|
---|
| 2512 | info->key = &input[index];
|
---|
| 2513 | index += info->key_len;
|
---|
| 2514 | }
|
---|
| 2515 |
|
---|
| 2516 | switch (info->named_group) {
|
---|
| 2517 | #ifndef NO_DH
|
---|
| 2518 | #ifdef HAVE_FFDHE_2048
|
---|
| 2519 | case WOLFSSL_FFDHE_2048:
|
---|
| 2520 | info->dh_key_bits = 2048;
|
---|
| 2521 | break;
|
---|
| 2522 | #endif
|
---|
| 2523 | #ifdef HAVE_FFDHE_3072
|
---|
| 2524 | case WOLFSSL_FFDHE_3072:
|
---|
| 2525 | info->dh_key_bits = 3072;
|
---|
| 2526 | break;
|
---|
| 2527 | #endif
|
---|
| 2528 | #ifdef HAVE_FFDHE_4096
|
---|
| 2529 | case WOLFSSL_FFDHE_4096:
|
---|
| 2530 | info->dh_key_bits = 4096;
|
---|
| 2531 | break;
|
---|
| 2532 | #endif
|
---|
| 2533 | #ifdef HAVE_FFDHE_6144
|
---|
| 2534 | case WOLFSSL_FFDHE_6144:
|
---|
| 2535 | info->dh_key_bits = 6144;
|
---|
| 2536 | break;
|
---|
| 2537 | #endif
|
---|
| 2538 | #ifdef HAVE_FFDHE_8192
|
---|
| 2539 | case WOLFSSL_FFDHE_8192:
|
---|
| 2540 | info->dh_key_bits = 8192;
|
---|
| 2541 | break;
|
---|
| 2542 | #endif
|
---|
| 2543 | #endif /* !NO_DH */
|
---|
| 2544 | #ifdef HAVE_ECC
|
---|
| 2545 | #if !defined(NO_ECC256) || defined(HAVE_ALL_CURVES)
|
---|
| 2546 | #ifndef NO_ECC_SECP
|
---|
| 2547 | case WOLFSSL_ECC_SECP256R1:
|
---|
| 2548 | info->curve_id = ECC_SECP256R1;
|
---|
| 2549 | break;
|
---|
| 2550 | #endif /* !NO_ECC_SECP */
|
---|
| 2551 | #endif
|
---|
| 2552 | #if defined(HAVE_ECC384) || defined(HAVE_ALL_CURVES)
|
---|
| 2553 | #ifndef NO_ECC_SECP
|
---|
| 2554 | case WOLFSSL_ECC_SECP384R1:
|
---|
| 2555 | info->curve_id = ECC_SECP384R1;
|
---|
| 2556 | break;
|
---|
| 2557 | #endif /* !NO_ECC_SECP */
|
---|
| 2558 | #endif
|
---|
| 2559 | #if defined(HAVE_ECC521) || defined(HAVE_ALL_CURVES)
|
---|
| 2560 | #ifndef NO_ECC_SECP
|
---|
| 2561 | case WOLFSSL_ECC_SECP521R1:
|
---|
| 2562 | info->curve_id = ECC_SECP521R1;
|
---|
| 2563 | break;
|
---|
| 2564 | #endif /* !NO_ECC_SECP */
|
---|
| 2565 | #endif
|
---|
| 2566 | #endif /* HAVE_ECC */
|
---|
| 2567 | #ifdef HAVE_CURVE25519
|
---|
| 2568 | case WOLFSSL_ECC_X25519:
|
---|
| 2569 | info->curve_id = ECC_X25519;
|
---|
| 2570 | break;
|
---|
| 2571 | #endif
|
---|
| 2572 | #ifdef HAVE_X448
|
---|
| 2573 | case WOLFSSL_ECC_X448:
|
---|
| 2574 | info->curve_id = ECC_X448;
|
---|
| 2575 | break;
|
---|
| 2576 | #endif
|
---|
| 2577 | default:
|
---|
| 2578 | /* do not throw error here, keep iterating the client key share */
|
---|
| 2579 | break;
|
---|
| 2580 | }
|
---|
| 2581 |
|
---|
| 2582 | if (filter_group == 0 || filter_group == info->named_group) {
|
---|
| 2583 | return 0;
|
---|
| 2584 | }
|
---|
| 2585 | }
|
---|
| 2586 | return NO_PEER_KEY; /* unsupported key type */
|
---|
[457] | 2587 | }
|
---|
| 2588 |
|
---|
[464] | 2589 | static int ProcessServerKeyShare(SnifferSession* session, const byte* input, int len,
|
---|
| 2590 | char* error)
|
---|
| 2591 | {
|
---|
| 2592 | int ret;
|
---|
[457] | 2593 |
|
---|
[464] | 2594 | if (session->cliKeyShare == NULL || session->cliKeyShareSz == 0) {
|
---|
| 2595 | /* session->cliKeyShareSz could not be provided yet if the client_hello
|
---|
| 2596 | did not send a key share to force a hello_retry_request */
|
---|
| 2597 | return 0;
|
---|
| 2598 | }
|
---|
| 2599 |
|
---|
| 2600 | /* Get server_hello key share (and key) */
|
---|
| 2601 | ret = ProcessKeyShare(&session->srvKs, input, len, 0);
|
---|
| 2602 | if (ret == 0 && session->srvKs.key_len > 0) {
|
---|
| 2603 | /* Get client_hello key share */
|
---|
| 2604 | ret = ProcessKeyShare(&session->cliKs, session->cliKeyShare,
|
---|
| 2605 | session->cliKeyShareSz, session->srvKs.named_group);
|
---|
| 2606 | }
|
---|
| 2607 | if (ret != 0) {
|
---|
| 2608 | SetError(SERVER_HELLO_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2609 | return -1;
|
---|
| 2610 | }
|
---|
| 2611 |
|
---|
| 2612 | return ret;
|
---|
| 2613 | }
|
---|
| 2614 | #endif /* WOLFSSL_TLS13 */
|
---|
| 2615 |
|
---|
[457] | 2616 | /* Process Session Ticket */
|
---|
| 2617 | static int ProcessSessionTicket(const byte* input, int* sslBytes,
|
---|
| 2618 | SnifferSession* session, char* error)
|
---|
| 2619 | {
|
---|
| 2620 | word16 len;
|
---|
| 2621 |
|
---|
[464] | 2622 | #ifdef WOLFSSL_TLS13
|
---|
| 2623 | WOLFSSL* ssl;
|
---|
| 2624 |
|
---|
| 2625 | if (session->flags.side == WOLFSSL_SERVER_END)
|
---|
| 2626 | ssl = session->sslServer;
|
---|
| 2627 | else
|
---|
| 2628 | ssl = session->sslClient;
|
---|
| 2629 | #endif
|
---|
| 2630 |
|
---|
| 2631 | /* make sure can read through hint len */
|
---|
| 2632 | if (TICKET_HINT_LEN > *sslBytes) {
|
---|
[457] | 2633 | SetError(BAD_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2634 | return -1;
|
---|
| 2635 | }
|
---|
[464] | 2636 | input += TICKET_HINT_LEN; /* skip over hint len */
|
---|
[457] | 2637 | *sslBytes -= TICKET_HINT_LEN;
|
---|
| 2638 |
|
---|
[464] | 2639 | #ifdef WOLFSSL_TLS13
|
---|
| 2640 | /* TLS v1.3 has hint age and nonce */
|
---|
| 2641 | if (IsAtLeastTLSv1_3(ssl->version)) {
|
---|
| 2642 | /* make sure can read through hint age and nonce len */
|
---|
| 2643 | if (TICKET_HINT_AGE_LEN + 1 > *sslBytes) {
|
---|
| 2644 | SetError(BAD_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2645 | return -1;
|
---|
| 2646 | }
|
---|
| 2647 | input += TICKET_HINT_AGE_LEN; /* skip over hint age */
|
---|
| 2648 | *sslBytes -= TICKET_HINT_AGE_LEN;
|
---|
| 2649 |
|
---|
| 2650 | /* ticket nonce */
|
---|
| 2651 | len = input[0];
|
---|
| 2652 | if (len > MAX_TICKET_NONCE_SZ) {
|
---|
| 2653 | SetError(BAD_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2654 | return -1;
|
---|
| 2655 | }
|
---|
| 2656 | input += OPAQUE8_LEN;
|
---|
| 2657 | *sslBytes -= OPAQUE8_LEN;
|
---|
| 2658 | #ifdef HAVE_SESSION_TICKET
|
---|
| 2659 | /* store nonce in server for DeriveResumptionPSK */
|
---|
| 2660 | session->sslServer->session.ticketNonce.len = len;
|
---|
| 2661 | if (len > 0)
|
---|
| 2662 | XMEMCPY(&session->sslServer->session.ticketNonce.data, input, len);
|
---|
| 2663 | #endif
|
---|
| 2664 | input += len;
|
---|
| 2665 | *sslBytes -= len;
|
---|
| 2666 | }
|
---|
| 2667 | #endif
|
---|
| 2668 |
|
---|
| 2669 | /* make sure can read through len */
|
---|
| 2670 | if (OPAQUE16_LEN > *sslBytes) {
|
---|
| 2671 | SetError(BAD_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2672 | return -1;
|
---|
| 2673 | }
|
---|
| 2674 |
|
---|
[457] | 2675 | len = (word16)((input[0] << 8) | input[1]);
|
---|
[464] | 2676 | input += OPAQUE16_LEN;
|
---|
| 2677 | *sslBytes -= OPAQUE16_LEN;
|
---|
[457] | 2678 |
|
---|
| 2679 | /* make sure can read through ticket */
|
---|
[464] | 2680 | if (len > *sslBytes) {
|
---|
[457] | 2681 | SetError(BAD_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2682 | return -1;
|
---|
| 2683 | }
|
---|
| 2684 |
|
---|
[464] | 2685 | #ifdef WOLFSSL_TLS13
|
---|
| 2686 | /* TLS v1.3 has hint age and nonce */
|
---|
| 2687 | if (IsAtLeastTLSv1_3(ssl->version)) {
|
---|
| 2688 | #ifdef HAVE_SESSION_TICKET
|
---|
| 2689 | if (SetTicket(ssl, input, len) != 0) {
|
---|
| 2690 | SetError(BAD_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2691 | return -1;
|
---|
| 2692 | }
|
---|
| 2693 | /* set haveSessionId to use the wolfSession cache */
|
---|
| 2694 | ssl->options.haveSessionId = 1;
|
---|
[457] | 2695 |
|
---|
[464] | 2696 | /* Use the wolf Session cache to retain resumption secret */
|
---|
| 2697 | if (session->flags.cached == 0) {
|
---|
| 2698 | WOLFSSL_SESSION* sess = GetSession(ssl, NULL, 0);
|
---|
| 2699 | if (sess == NULL) {
|
---|
| 2700 | AddSession(ssl); /* don't re add */
|
---|
| 2701 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 2702 | INC_STAT(SnifferStats.sslResumptionInserts);
|
---|
| 2703 | #endif
|
---|
| 2704 | }
|
---|
| 2705 | session->flags.cached = 1;
|
---|
| 2706 | }
|
---|
| 2707 | #endif /* HAVE_SESSION_TICKET */
|
---|
| 2708 | }
|
---|
| 2709 | else
|
---|
| 2710 | #endif /* WOLFSSL_TLS13 */
|
---|
| 2711 | {
|
---|
| 2712 | /* capture last part of sessionID as macID (32 bytes) */
|
---|
| 2713 | if (len < ID_LEN) {
|
---|
| 2714 | SetError(BAD_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2715 | return -1;
|
---|
| 2716 | }
|
---|
| 2717 | /* store session with macID as sessionID */
|
---|
| 2718 | session->sslServer->options.haveSessionId = 1;
|
---|
| 2719 | XMEMCPY(session->sslServer->arrays->sessionID,
|
---|
| 2720 | input + len - ID_LEN, ID_LEN);
|
---|
| 2721 | }
|
---|
| 2722 |
|
---|
[457] | 2723 | return 0;
|
---|
| 2724 | }
|
---|
| 2725 |
|
---|
[464] | 2726 | static int DoResume(SnifferSession* session, char* error)
|
---|
| 2727 | {
|
---|
| 2728 | int ret = 0;
|
---|
| 2729 | WOLFSSL_SESSION* resume;
|
---|
[457] | 2730 |
|
---|
[464] | 2731 | #ifdef WOLFSSL_TLS13
|
---|
| 2732 | if (IsAtLeastTLSv1_3(session->sslServer->version)) {
|
---|
| 2733 | resume = GetSession(session->sslServer,
|
---|
| 2734 | session->sslServer->session.masterSecret, 0);
|
---|
| 2735 | }
|
---|
| 2736 | else
|
---|
| 2737 | #endif
|
---|
| 2738 | {
|
---|
| 2739 | resume = GetSession(session->sslServer,
|
---|
| 2740 | session->sslServer->arrays->masterSecret, 0);
|
---|
| 2741 | }
|
---|
| 2742 | if (resume == NULL) {
|
---|
| 2743 | /* a session id without resume is okay with hello_retry_request */
|
---|
| 2744 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 2745 | INC_STAT(SnifferStats.sslStandardConns);
|
---|
| 2746 | #endif
|
---|
| 2747 | return 0;
|
---|
| 2748 | }
|
---|
| 2749 |
|
---|
| 2750 | /* make sure client has master secret too */
|
---|
| 2751 | #ifdef WOLFSSL_TLS13
|
---|
| 2752 | if (IsAtLeastTLSv1_3(session->sslServer->version)) {
|
---|
| 2753 | XMEMCPY(session->sslClient->session.masterSecret,
|
---|
| 2754 | session->sslServer->session.masterSecret, SECRET_LEN);
|
---|
| 2755 | }
|
---|
| 2756 | else
|
---|
| 2757 | #endif
|
---|
| 2758 | {
|
---|
| 2759 | XMEMCPY(session->sslClient->arrays->masterSecret,
|
---|
| 2760 | session->sslServer->arrays->masterSecret, SECRET_LEN);
|
---|
| 2761 | }
|
---|
| 2762 | session->flags.resuming = 1;
|
---|
| 2763 |
|
---|
| 2764 | Trace(SERVER_DID_RESUMPTION_STR);
|
---|
| 2765 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 2766 | INC_STAT(SnifferStats.sslResumedConns);
|
---|
| 2767 | INC_STAT(SnifferStats.sslResumptionValid);
|
---|
| 2768 | #endif
|
---|
| 2769 | if (SetCipherSpecs(session->sslServer) != 0) {
|
---|
| 2770 | SetError(BAD_CIPHER_SPEC_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2771 | return -1;
|
---|
| 2772 | }
|
---|
| 2773 |
|
---|
| 2774 | if (SetCipherSpecs(session->sslClient) != 0) {
|
---|
| 2775 | SetError(BAD_CIPHER_SPEC_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2776 | return -1;
|
---|
| 2777 | }
|
---|
| 2778 |
|
---|
| 2779 | #ifdef WOLFSSL_TLS13
|
---|
| 2780 | if (IsAtLeastTLSv1_3(session->sslServer->version)) {
|
---|
| 2781 | #ifdef HAVE_SESSION_TICKET
|
---|
| 2782 | /* Resumption PSK is resumption master secret. */
|
---|
| 2783 | session->sslServer->arrays->psk_keySz = session->sslServer->specs.hash_size;
|
---|
| 2784 | session->sslClient->arrays->psk_keySz = session->sslClient->specs.hash_size;
|
---|
| 2785 | ret = DeriveResumptionPSK(session->sslServer, session->sslServer->session.ticketNonce.data,
|
---|
| 2786 | session->sslServer->session.ticketNonce.len, session->sslServer->arrays->psk_key);
|
---|
| 2787 | /* Copy resumption PSK to client */
|
---|
| 2788 | XMEMCPY(session->sslClient->arrays->psk_key,
|
---|
| 2789 | session->sslServer->arrays->psk_key,
|
---|
| 2790 | session->sslServer->arrays->psk_keySz);
|
---|
| 2791 | #endif
|
---|
| 2792 | /* handshake key setup below and traffic keys done in SetupKeys */
|
---|
| 2793 | }
|
---|
| 2794 | else
|
---|
| 2795 | #endif
|
---|
| 2796 | {
|
---|
| 2797 | if (IsTLS(session->sslServer)) {
|
---|
| 2798 | ret = DeriveTlsKeys(session->sslServer);
|
---|
| 2799 | ret += DeriveTlsKeys(session->sslClient);
|
---|
| 2800 | }
|
---|
| 2801 | else {
|
---|
| 2802 | #ifndef NO_OLD_TLS
|
---|
| 2803 | ret = DeriveKeys(session->sslServer);
|
---|
| 2804 | ret += DeriveKeys(session->sslClient);
|
---|
| 2805 | #endif
|
---|
| 2806 | }
|
---|
| 2807 | ret += SetKeysSide(session->sslServer, ENCRYPT_AND_DECRYPT_SIDE);
|
---|
| 2808 | ret += SetKeysSide(session->sslClient, ENCRYPT_AND_DECRYPT_SIDE);
|
---|
| 2809 | }
|
---|
| 2810 |
|
---|
| 2811 | if (ret != 0) {
|
---|
| 2812 | SetError(BAD_DERIVE_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2813 | return -1;
|
---|
| 2814 | }
|
---|
| 2815 |
|
---|
| 2816 | return ret;
|
---|
| 2817 | }
|
---|
| 2818 |
|
---|
[457] | 2819 | /* Process Server Hello */
|
---|
| 2820 | static int ProcessServerHello(int msgSz, const byte* input, int* sslBytes,
|
---|
| 2821 | SnifferSession* session, char* error)
|
---|
| 2822 | {
|
---|
[464] | 2823 | int ret = 0;
|
---|
[457] | 2824 | ProtocolVersion pv;
|
---|
| 2825 | byte b, b0;
|
---|
| 2826 | int toRead = VERSION_SZ + RAN_LEN + ENUM_LEN;
|
---|
[464] | 2827 | int doResume = 0;
|
---|
| 2828 | const byte* inputHello = input;
|
---|
[457] | 2829 | int initialBytes = *sslBytes;
|
---|
| 2830 |
|
---|
| 2831 | (void)msgSz;
|
---|
| 2832 |
|
---|
| 2833 | /* make sure we didn't miss ClientHello */
|
---|
[464] | 2834 | if (session->flags.clientHello == 0 || session->sslClient->arrays == NULL) {
|
---|
| 2835 | SetError(MISSED_CLIENT_HELLO_STR, error, session, 0);
|
---|
| 2836 | return 0; /* do not throw error, just ignore packet */
|
---|
[457] | 2837 | }
|
---|
| 2838 |
|
---|
| 2839 | /* make sure can read through session len */
|
---|
| 2840 | if (toRead > *sslBytes) {
|
---|
| 2841 | SetError(SERVER_HELLO_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2842 | return -1;
|
---|
| 2843 | }
|
---|
| 2844 |
|
---|
| 2845 | XMEMCPY(&pv, input, VERSION_SZ);
|
---|
| 2846 | input += VERSION_SZ;
|
---|
| 2847 | *sslBytes -= VERSION_SZ;
|
---|
| 2848 |
|
---|
| 2849 | session->sslServer->version = pv;
|
---|
| 2850 | session->sslClient->version = pv;
|
---|
[464] | 2851 | if (pv.minor >= TLSv1_MINOR) {
|
---|
| 2852 | session->sslServer->options.tls = 1;
|
---|
| 2853 | session->sslClient->options.tls = 1;
|
---|
| 2854 | }
|
---|
[457] | 2855 |
|
---|
| 2856 | XMEMCPY(session->sslServer->arrays->serverRandom, input, RAN_LEN);
|
---|
| 2857 | XMEMCPY(session->sslClient->arrays->serverRandom, input, RAN_LEN);
|
---|
[464] | 2858 | input += RAN_LEN;
|
---|
[457] | 2859 | *sslBytes -= RAN_LEN;
|
---|
| 2860 |
|
---|
| 2861 | b = *input++;
|
---|
| 2862 | *sslBytes -= 1;
|
---|
| 2863 |
|
---|
| 2864 | /* make sure can read through compression */
|
---|
| 2865 | if ( (b + SUITE_LEN + ENUM_LEN) > *sslBytes) {
|
---|
| 2866 | SetError(SERVER_HELLO_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2867 | return -1;
|
---|
| 2868 | }
|
---|
| 2869 | if (b) {
|
---|
[464] | 2870 | #ifdef WOLFSSL_TLS13
|
---|
| 2871 | XMEMCPY(session->sslServer->session.sessionID, input, ID_LEN);
|
---|
| 2872 | #endif
|
---|
[457] | 2873 | XMEMCPY(session->sslServer->arrays->sessionID, input, ID_LEN);
|
---|
| 2874 | session->sslServer->options.haveSessionId = 1;
|
---|
| 2875 | }
|
---|
| 2876 | input += b;
|
---|
| 2877 | *sslBytes -= b;
|
---|
| 2878 |
|
---|
| 2879 | /* cipher suite */
|
---|
| 2880 | b0 = *input++; /* first byte, ECC or not */
|
---|
| 2881 | session->sslServer->options.cipherSuite0 = b0;
|
---|
| 2882 | session->sslClient->options.cipherSuite0 = b0;
|
---|
| 2883 | b = *input++;
|
---|
| 2884 | session->sslServer->options.cipherSuite = b;
|
---|
| 2885 | session->sslClient->options.cipherSuite = b;
|
---|
| 2886 | *sslBytes -= SUITE_LEN;
|
---|
| 2887 |
|
---|
| 2888 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 2889 | {
|
---|
| 2890 | const CipherSuiteInfo* suites = GetCipherNames();
|
---|
| 2891 | int suitesSz = GetCipherNamesSize();
|
---|
| 2892 | int match = 0;
|
---|
| 2893 |
|
---|
| 2894 | while (suitesSz) {
|
---|
| 2895 | if (b0 == suites->cipherSuite0 && b == suites->cipherSuite) {
|
---|
| 2896 | match = 1;
|
---|
| 2897 | break;
|
---|
| 2898 | }
|
---|
| 2899 | suites++;
|
---|
| 2900 | suitesSz--;
|
---|
| 2901 | }
|
---|
| 2902 | if (!match)
|
---|
| 2903 | INC_STAT(SnifferStats.sslCiphersUnsupported);
|
---|
| 2904 | }
|
---|
| 2905 | #endif /* WOLFSSL_SNIFFER_STATS */
|
---|
| 2906 |
|
---|
| 2907 | /* compression */
|
---|
| 2908 | b = *input++;
|
---|
| 2909 | *sslBytes -= ENUM_LEN;
|
---|
| 2910 |
|
---|
| 2911 | if (b) {
|
---|
| 2912 | SetError(BAD_COMPRESSION_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2913 | return -1;
|
---|
| 2914 | }
|
---|
| 2915 |
|
---|
| 2916 | /* extensions */
|
---|
| 2917 | if ((initialBytes - *sslBytes) < msgSz) {
|
---|
| 2918 | word16 len;
|
---|
| 2919 |
|
---|
| 2920 | /* skip extensions until extended master secret */
|
---|
| 2921 | /* make sure can read len */
|
---|
| 2922 | if (SUITE_LEN > *sslBytes) {
|
---|
| 2923 | SetError(SERVER_HELLO_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2924 | return -1;
|
---|
| 2925 | }
|
---|
| 2926 | len = (word16)((input[0] << 8) | input[1]);
|
---|
| 2927 | input += SUITE_LEN;
|
---|
| 2928 | *sslBytes -= SUITE_LEN;
|
---|
| 2929 | /* make sure can read through all extensions */
|
---|
| 2930 | if (len > *sslBytes) {
|
---|
| 2931 | SetError(SERVER_HELLO_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 2932 | return -1;
|
---|
| 2933 | }
|
---|
| 2934 |
|
---|
| 2935 | while (len >= EXT_TYPE_SZ + LENGTH_SZ) {
|
---|
[464] | 2936 | word16 extType;
|
---|
[457] | 2937 | word16 extLen;
|
---|
| 2938 |
|
---|
[464] | 2939 | extType = (word16)((input[0] << 8) | input[1]);
|
---|
[457] | 2940 | input += EXT_TYPE_SZ;
|
---|
| 2941 | *sslBytes -= EXT_TYPE_SZ;
|
---|
| 2942 |
|
---|
[464] | 2943 | extLen = (word16)((input[0] << 8) | input[1]);
|
---|
[457] | 2944 | input += LENGTH_SZ;
|
---|
| 2945 | *sslBytes -= LENGTH_SZ;
|
---|
| 2946 |
|
---|
| 2947 | /* make sure can read through individual extension */
|
---|
| 2948 | if (extLen > *sslBytes) {
|
---|
| 2949 | SetError(SERVER_HELLO_INPUT_STR, error, session,
|
---|
| 2950 | FATAL_ERROR_STATE);
|
---|
| 2951 | return -1;
|
---|
| 2952 | }
|
---|
| 2953 |
|
---|
[464] | 2954 | switch (extType) {
|
---|
| 2955 | #ifdef WOLFSSL_TLS13
|
---|
| 2956 | case EXT_KEY_SHARE:
|
---|
| 2957 | ret = ProcessServerKeyShare(session, input, extLen, error);
|
---|
| 2958 | if (ret != 0) {
|
---|
| 2959 | SetError(SERVER_HELLO_INPUT_STR, error, session,
|
---|
| 2960 | FATAL_ERROR_STATE);
|
---|
| 2961 | return -1;
|
---|
| 2962 | }
|
---|
| 2963 | break;
|
---|
| 2964 | #endif
|
---|
| 2965 | #ifdef HAVE_SESSION_TICKET
|
---|
| 2966 | case EXT_PRE_SHARED_KEY:
|
---|
| 2967 | /* indicates we want to use resumption */
|
---|
| 2968 | session->sslServer->options.resuming = 1;
|
---|
| 2969 | session->sslClient->options.resuming = 1;
|
---|
| 2970 | #ifdef WOLFSSL_TLS13
|
---|
| 2971 | /* default nonce to len = 1, data = 0 */
|
---|
| 2972 | session->sslServer->session.ticketNonce.len = 1;
|
---|
| 2973 | session->sslServer->session.ticketNonce.data[0] = 0;
|
---|
| 2974 | session->sslClient->session.ticketNonce.len = 1;
|
---|
| 2975 | session->sslClient->session.ticketNonce.data[0] = 0;
|
---|
| 2976 | #endif
|
---|
| 2977 | break;
|
---|
| 2978 | #endif
|
---|
| 2979 | #ifdef HAVE_MAX_FRAGMENT
|
---|
| 2980 | case EXT_MAX_FRAGMENT_LENGTH:
|
---|
| 2981 | {
|
---|
| 2982 | word16 max_fragment = MAX_RECORD_SIZE;
|
---|
| 2983 | switch (input[0]) {
|
---|
| 2984 | case WOLFSSL_MFL_2_8 : max_fragment = 256; break;
|
---|
| 2985 | case WOLFSSL_MFL_2_9 : max_fragment = 512; break;
|
---|
| 2986 | case WOLFSSL_MFL_2_10: max_fragment = 1024; break;
|
---|
| 2987 | case WOLFSSL_MFL_2_11: max_fragment = 2048; break;
|
---|
| 2988 | case WOLFSSL_MFL_2_12: max_fragment = 4096; break;
|
---|
| 2989 | case WOLFSSL_MFL_2_13: max_fragment = 8192; break;
|
---|
| 2990 | default: break;
|
---|
| 2991 | }
|
---|
| 2992 | session->sslServer->max_fragment = max_fragment;
|
---|
| 2993 | session->sslClient->max_fragment = max_fragment;
|
---|
| 2994 | break;
|
---|
| 2995 | }
|
---|
| 2996 | #endif
|
---|
| 2997 | case EXT_SUPPORTED_VERSIONS:
|
---|
| 2998 | session->sslServer->version.major = input[0];
|
---|
| 2999 | session->sslServer->version.minor = input[1];
|
---|
| 3000 | session->sslClient->version.major = input[0];
|
---|
| 3001 | session->sslClient->version.minor = input[1];
|
---|
| 3002 | if (IsAtLeastTLSv1_3(session->sslServer->version)) {
|
---|
| 3003 | /* The server side handshake encryption is on for future packets */
|
---|
| 3004 | session->flags.serverCipherOn = 1;
|
---|
| 3005 | }
|
---|
| 3006 | break;
|
---|
| 3007 | case EXT_MASTER_SECRET:
|
---|
| 3008 | #ifdef HAVE_EXTENDED_MASTER
|
---|
[457] | 3009 | session->flags.expectEms = 1;
|
---|
[464] | 3010 | #endif
|
---|
| 3011 | break;
|
---|
[457] | 3012 | }
|
---|
| 3013 |
|
---|
| 3014 | input += extLen;
|
---|
| 3015 | *sslBytes -= extLen;
|
---|
| 3016 | len -= extLen + EXT_TYPE_SZ + LENGTH_SZ;
|
---|
| 3017 | }
|
---|
| 3018 | }
|
---|
| 3019 |
|
---|
[464] | 3020 | #ifdef HAVE_EXTENDED_MASTER
|
---|
[457] | 3021 | if (!session->flags.expectEms) {
|
---|
| 3022 | XFREE(session->hash, NULL, DYNAMIC_TYPE_HASHES);
|
---|
| 3023 | session->hash = NULL;
|
---|
| 3024 | }
|
---|
| 3025 | #endif
|
---|
| 3026 |
|
---|
| 3027 | if (session->sslServer->options.haveSessionId) {
|
---|
| 3028 | if (XMEMCMP(session->sslServer->arrays->sessionID,
|
---|
[464] | 3029 | session->sslClient->arrays->sessionID, ID_LEN) == 0) {
|
---|
[457] | 3030 | doResume = 1;
|
---|
[464] | 3031 | }
|
---|
| 3032 | }
|
---|
[457] | 3033 | else if (session->sslClient->options.haveSessionId == 0 &&
|
---|
| 3034 | session->sslServer->options.haveSessionId == 0 &&
|
---|
[464] | 3035 | session->ticketID) {
|
---|
[457] | 3036 | doResume = 1;
|
---|
[464] | 3037 | }
|
---|
[457] | 3038 |
|
---|
| 3039 | if (session->ticketID && doResume) {
|
---|
| 3040 | /* use ticketID to retrieve from session, prefer over sessionID */
|
---|
| 3041 | XMEMCPY(session->sslServer->arrays->sessionID,session->ticketID,ID_LEN);
|
---|
| 3042 | session->sslServer->options.haveSessionId = 1; /* may not have
|
---|
| 3043 | actual sessionID */
|
---|
| 3044 | }
|
---|
| 3045 |
|
---|
[464] | 3046 | #ifdef WOLFSSL_TLS13
|
---|
| 3047 | /* Is TLS v1.3 hello_retry_request? */
|
---|
| 3048 | if (IsAtLeastTLSv1_3(session->sslServer->version) && session->srvKs.key_len == 0) {
|
---|
| 3049 | Trace(GOT_HELLO_RETRY_REQ_STR);
|
---|
[457] | 3050 |
|
---|
[464] | 3051 | /* do not compute keys yet */
|
---|
| 3052 | session->flags.serverCipherOn = 0;
|
---|
| 3053 |
|
---|
| 3054 | /* make sure the mac and digest size are set */
|
---|
| 3055 | SetCipherSpecs(session->sslServer);
|
---|
| 3056 | SetCipherSpecs(session->sslClient);
|
---|
| 3057 |
|
---|
| 3058 | /* reset hashes */
|
---|
| 3059 | RestartHandshakeHash(session->sslServer);
|
---|
| 3060 | RestartHandshakeHash(session->sslClient);
|
---|
| 3061 |
|
---|
| 3062 | doResume = 0;
|
---|
| 3063 | }
|
---|
[457] | 3064 | #endif
|
---|
| 3065 |
|
---|
[464] | 3066 | /* hash server_hello */
|
---|
| 3067 | HashRaw(session->sslServer, inputHello - HANDSHAKE_HEADER_SZ,
|
---|
| 3068 | initialBytes + HANDSHAKE_HEADER_SZ);
|
---|
| 3069 | HashRaw(session->sslClient, inputHello - HANDSHAKE_HEADER_SZ,
|
---|
| 3070 | initialBytes + HANDSHAKE_HEADER_SZ);
|
---|
[457] | 3071 |
|
---|
[464] | 3072 | if (doResume) {
|
---|
| 3073 | ret = DoResume(session, error);
|
---|
[457] | 3074 | if (ret != 0) {
|
---|
[464] | 3075 | return ret;
|
---|
[457] | 3076 | }
|
---|
| 3077 | }
|
---|
| 3078 | else {
|
---|
| 3079 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 3080 | INC_STAT(SnifferStats.sslStandardConns);
|
---|
| 3081 | #endif
|
---|
| 3082 | }
|
---|
[464] | 3083 |
|
---|
[457] | 3084 | #ifdef SHOW_SECRETS
|
---|
[464] | 3085 | printf("cipher suite = 0x%02x\n", session->sslServer->options.cipherSuite);
|
---|
| 3086 | PrintSecret("server random", session->sslServer->arrays->serverRandom, RAN_LEN);
|
---|
| 3087 | #endif
|
---|
| 3088 |
|
---|
| 3089 | #ifdef WOLFSSL_TLS13
|
---|
| 3090 | /* Setup handshake keys */
|
---|
| 3091 | if (IsAtLeastTLSv1_3(session->sslServer->version) && session->srvKs.key_len > 0) {
|
---|
| 3092 | KeyBuffers_t keys;
|
---|
| 3093 | XMEMSET(&keys, 0, sizeof(keys));
|
---|
| 3094 | keys.rsaKey = session->sslServer->buffers.key;
|
---|
| 3095 | #ifdef WOLFSSL_STATIC_EPHEMERAL
|
---|
| 3096 | #ifndef NO_DH
|
---|
| 3097 | keys.dhKey = session->sslServer->staticKE.dhKey;
|
---|
| 3098 | #endif
|
---|
| 3099 | #ifdef HAVE_ECC
|
---|
| 3100 | keys.ecKey = session->sslServer->staticKE.ecKey;
|
---|
| 3101 | #endif
|
---|
| 3102 | #endif
|
---|
| 3103 | ret = SetupKeys(session->cliKs.key, &session->cliKs.key_len,
|
---|
| 3104 | session, error, &session->cliKs, &keys);
|
---|
| 3105 | if (ret != 0) {
|
---|
| 3106 | SetError(SERVER_HELLO_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3107 | return ret;
|
---|
| 3108 | }
|
---|
| 3109 |
|
---|
| 3110 | if (session->flags.side == WOLFSSL_SERVER_END)
|
---|
| 3111 | session->flags.serverCipherOn = 1;
|
---|
| 3112 | else
|
---|
| 3113 | session->flags.clientCipherOn = 1;
|
---|
[457] | 3114 | }
|
---|
| 3115 | #endif
|
---|
[464] | 3116 |
|
---|
[457] | 3117 | return 0;
|
---|
| 3118 | }
|
---|
| 3119 |
|
---|
| 3120 |
|
---|
| 3121 | /* Process normal Client Hello */
|
---|
| 3122 | static int ProcessClientHello(const byte* input, int* sslBytes,
|
---|
| 3123 | SnifferSession* session, char* error)
|
---|
| 3124 | {
|
---|
[464] | 3125 | int ret = 0;
|
---|
[457] | 3126 | byte bLen;
|
---|
| 3127 | word16 len;
|
---|
| 3128 | int toRead = VERSION_SZ + RAN_LEN + ENUM_LEN;
|
---|
[464] | 3129 | const byte* inputHello = input;
|
---|
| 3130 | int inputHelloSz = *sslBytes;
|
---|
| 3131 | WOLFSSL* ssl = session->sslServer;
|
---|
| 3132 | int didHash = 0;
|
---|
[457] | 3133 |
|
---|
| 3134 | #ifdef HAVE_SNI
|
---|
| 3135 | {
|
---|
| 3136 | byte name[MAX_SERVER_NAME];
|
---|
| 3137 | word32 nameSz = sizeof(name);
|
---|
| 3138 |
|
---|
| 3139 | ret = wolfSSL_SNI_GetFromBuffer(
|
---|
| 3140 | input - HANDSHAKE_HEADER_SZ - RECORD_HEADER_SZ,
|
---|
| 3141 | *sslBytes + HANDSHAKE_HEADER_SZ + RECORD_HEADER_SZ,
|
---|
| 3142 | WOLFSSL_SNI_HOST_NAME, name, &nameSz);
|
---|
| 3143 |
|
---|
| 3144 | if (ret == WOLFSSL_SUCCESS) {
|
---|
| 3145 | NamedKey* namedKey;
|
---|
| 3146 |
|
---|
| 3147 | if (nameSz > sizeof(name) - 1)
|
---|
| 3148 | nameSz = sizeof(name) - 1;
|
---|
| 3149 | name[nameSz] = 0;
|
---|
| 3150 | wc_LockMutex(&session->context->namedKeysMutex);
|
---|
| 3151 | namedKey = session->context->namedKeys;
|
---|
| 3152 | while (namedKey != NULL) {
|
---|
| 3153 | if (nameSz == namedKey->nameSz &&
|
---|
| 3154 | XSTRNCMP((char*)name, namedKey->name, nameSz) == 0) {
|
---|
[464] | 3155 | #ifdef WOLFSSL_STATIC_EPHEMERAL
|
---|
| 3156 | if (namedKey->isEphemeralKey) {
|
---|
| 3157 | /* auto detect key type with WC_PK_TYPE_NONE */
|
---|
| 3158 | ret = wolfSSL_set_ephemeral_key(ssl,
|
---|
| 3159 | WC_PK_TYPE_NONE, (const char*)namedKey->key,
|
---|
| 3160 | namedKey->keySz, WOLFSSL_FILETYPE_ASN1);
|
---|
| 3161 | if (ret == 0)
|
---|
| 3162 | ret = WOLFSSL_SUCCESS;
|
---|
| 3163 | }
|
---|
| 3164 | else
|
---|
| 3165 | #endif
|
---|
| 3166 | {
|
---|
| 3167 | ret = wolfSSL_use_PrivateKey_buffer(ssl,
|
---|
| 3168 | namedKey->key, namedKey->keySz,
|
---|
| 3169 | WOLFSSL_FILETYPE_ASN1);
|
---|
| 3170 | }
|
---|
| 3171 | if (ret != WOLFSSL_SUCCESS) {
|
---|
[457] | 3172 | wc_UnLockMutex(&session->context->namedKeysMutex);
|
---|
| 3173 | SetError(CLIENT_HELLO_LATE_KEY_STR, error, session,
|
---|
| 3174 | FATAL_ERROR_STATE);
|
---|
| 3175 | return -1;
|
---|
| 3176 | }
|
---|
| 3177 | session->sni = namedKey->name;
|
---|
| 3178 | break;
|
---|
| 3179 | }
|
---|
| 3180 | else
|
---|
| 3181 | namedKey = namedKey->next;
|
---|
| 3182 | }
|
---|
| 3183 | wc_UnLockMutex(&session->context->namedKeysMutex);
|
---|
| 3184 | }
|
---|
[464] | 3185 | /* SSLv3 does not support the SNI TLS Extension and may return SNI_UNSUPPORTED */
|
---|
| 3186 | if (ret > 0 || ret == SNI_UNSUPPORTED) {
|
---|
| 3187 | /* make sure WOLFSSL_SUCCESS is converted to zero error code */
|
---|
| 3188 | ret = 0;
|
---|
| 3189 | }
|
---|
[457] | 3190 | }
|
---|
| 3191 | #endif
|
---|
| 3192 |
|
---|
| 3193 | session->flags.clientHello = 1; /* don't process again */
|
---|
| 3194 |
|
---|
| 3195 | /* make sure can read up to session len */
|
---|
| 3196 | if (toRead > *sslBytes) {
|
---|
| 3197 | SetError(CLIENT_HELLO_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3198 | return -1;
|
---|
| 3199 | }
|
---|
| 3200 |
|
---|
| 3201 | /* skip, get negotiated one from server hello */
|
---|
| 3202 | input += VERSION_SZ;
|
---|
| 3203 | *sslBytes -= VERSION_SZ;
|
---|
| 3204 |
|
---|
| 3205 | XMEMCPY(session->sslServer->arrays->clientRandom, input, RAN_LEN);
|
---|
| 3206 | XMEMCPY(session->sslClient->arrays->clientRandom, input, RAN_LEN);
|
---|
| 3207 |
|
---|
| 3208 | input += RAN_LEN;
|
---|
| 3209 | *sslBytes -= RAN_LEN;
|
---|
| 3210 |
|
---|
| 3211 | /* store session in case trying to resume */
|
---|
| 3212 | bLen = *input++;
|
---|
| 3213 | *sslBytes -= ENUM_LEN;
|
---|
| 3214 | if (bLen) {
|
---|
| 3215 | if (ID_LEN > *sslBytes) {
|
---|
| 3216 | SetError(CLIENT_HELLO_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3217 | return -1;
|
---|
| 3218 | }
|
---|
| 3219 | Trace(CLIENT_RESUME_TRY_STR);
|
---|
[464] | 3220 | #ifdef WOLFSSL_TLS13
|
---|
| 3221 | XMEMCPY(session->sslClient->session.sessionID, input, ID_LEN);
|
---|
| 3222 | #endif
|
---|
[457] | 3223 | XMEMCPY(session->sslClient->arrays->sessionID, input, ID_LEN);
|
---|
| 3224 | session->sslClient->options.haveSessionId = 1;
|
---|
| 3225 | }
|
---|
[464] | 3226 |
|
---|
[457] | 3227 | #ifdef SHOW_SECRETS
|
---|
[464] | 3228 | PrintSecret("client random", ssl->arrays->clientRandom, RAN_LEN);
|
---|
[457] | 3229 | #endif
|
---|
| 3230 |
|
---|
| 3231 | input += bLen;
|
---|
| 3232 | *sslBytes -= bLen;
|
---|
| 3233 |
|
---|
| 3234 | /* skip cipher suites */
|
---|
| 3235 | /* make sure can read len */
|
---|
| 3236 | if (SUITE_LEN > *sslBytes) {
|
---|
| 3237 | SetError(CLIENT_HELLO_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3238 | return -1;
|
---|
| 3239 | }
|
---|
| 3240 | len = (word16)((input[0] << 8) | input[1]);
|
---|
| 3241 | input += SUITE_LEN;
|
---|
| 3242 | *sslBytes -= SUITE_LEN;
|
---|
| 3243 | /* make sure can read suites + comp len */
|
---|
| 3244 | if (len + ENUM_LEN > *sslBytes) {
|
---|
| 3245 | SetError(CLIENT_HELLO_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3246 | return -1;
|
---|
| 3247 | }
|
---|
| 3248 | input += len;
|
---|
| 3249 | *sslBytes -= len;
|
---|
| 3250 |
|
---|
| 3251 | /* skip compression */
|
---|
| 3252 | bLen = *input++;
|
---|
| 3253 | *sslBytes -= ENUM_LEN;
|
---|
| 3254 | /* make sure can read len */
|
---|
| 3255 | if (bLen > *sslBytes) {
|
---|
| 3256 | SetError(CLIENT_HELLO_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3257 | return -1;
|
---|
| 3258 | }
|
---|
| 3259 | input += bLen;
|
---|
| 3260 | *sslBytes -= bLen;
|
---|
| 3261 |
|
---|
| 3262 | if (*sslBytes == 0) {
|
---|
| 3263 | /* no extensions */
|
---|
| 3264 | return 0;
|
---|
| 3265 | }
|
---|
| 3266 |
|
---|
| 3267 | /* skip extensions until session ticket */
|
---|
| 3268 | /* make sure can read len */
|
---|
| 3269 | if (SUITE_LEN > *sslBytes) {
|
---|
| 3270 | SetError(CLIENT_HELLO_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3271 | return -1;
|
---|
| 3272 | }
|
---|
| 3273 | len = (word16)((input[0] << 8) | input[1]);
|
---|
| 3274 | input += SUITE_LEN;
|
---|
| 3275 | *sslBytes -= SUITE_LEN;
|
---|
| 3276 | /* make sure can read through all extensions */
|
---|
| 3277 | if (len > *sslBytes) {
|
---|
| 3278 | SetError(CLIENT_HELLO_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3279 | return -1;
|
---|
| 3280 | }
|
---|
| 3281 |
|
---|
| 3282 | while (len >= EXT_TYPE_SZ + LENGTH_SZ) {
|
---|
[464] | 3283 | word16 extType;
|
---|
[457] | 3284 | word16 extLen;
|
---|
| 3285 |
|
---|
[464] | 3286 | extType = (word16)((input[0] << 8) | input[1]);
|
---|
[457] | 3287 | input += EXT_TYPE_SZ;
|
---|
| 3288 | *sslBytes -= EXT_TYPE_SZ;
|
---|
| 3289 |
|
---|
[464] | 3290 | extLen = (word16)((input[0] << 8) | input[1]);
|
---|
[457] | 3291 | input += LENGTH_SZ;
|
---|
| 3292 | *sslBytes -= LENGTH_SZ;
|
---|
| 3293 |
|
---|
| 3294 | /* make sure can read through individual extension */
|
---|
| 3295 | if (extLen > *sslBytes) {
|
---|
| 3296 | SetError(CLIENT_HELLO_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3297 | return -1;
|
---|
| 3298 | }
|
---|
| 3299 |
|
---|
[464] | 3300 | switch (extType) {
|
---|
| 3301 | #ifdef WOLFSSL_TLS13
|
---|
| 3302 | case EXT_KEY_SHARE:
|
---|
| 3303 | {
|
---|
| 3304 | word16 ksLen = (word16)((input[0] << 8) | input[1]);
|
---|
| 3305 | if (ksLen + OPAQUE16_LEN > extLen) {
|
---|
| 3306 | SetError(CLIENT_HELLO_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3307 | return -1;
|
---|
| 3308 | }
|
---|
| 3309 | /* cache key share data till server_hello */
|
---|
| 3310 | session->cliKeyShareSz = ksLen;
|
---|
| 3311 | session->cliKeyShare = (byte*)XMALLOC(ksLen, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
---|
| 3312 | if (session->cliKeyShare == NULL) {
|
---|
| 3313 | SetError(MEMORY_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3314 | break;
|
---|
| 3315 | }
|
---|
| 3316 | XMEMCPY(session->cliKeyShare, &input[2], ksLen);
|
---|
| 3317 | break;
|
---|
| 3318 | }
|
---|
| 3319 | #ifdef HAVE_SESSION_TICKET
|
---|
| 3320 | case EXT_PRE_SHARED_KEY:
|
---|
| 3321 | {
|
---|
| 3322 | word16 idsLen, idLen, bindersLen, idx = 0;
|
---|
| 3323 | word32 ticketAge;
|
---|
| 3324 | const byte *identity, *binders;
|
---|
[457] | 3325 |
|
---|
[464] | 3326 | idsLen = (word16)((input[idx] << 8) | input[idx+1]);
|
---|
| 3327 | if (idsLen + OPAQUE16_LEN + idx > extLen) {
|
---|
| 3328 | SetError(CLIENT_HELLO_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3329 | return -1;
|
---|
| 3330 | }
|
---|
| 3331 | idx += OPAQUE16_LEN;
|
---|
| 3332 |
|
---|
| 3333 | /* PSK identity */
|
---|
| 3334 | idLen = (word16)((input[idx] << 8) | input[idx+1]);
|
---|
| 3335 | if (idLen + OPAQUE16_LEN + idx > extLen) {
|
---|
| 3336 | SetError(CLIENT_HELLO_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3337 | return -1;
|
---|
| 3338 | }
|
---|
| 3339 | idx += OPAQUE16_LEN;
|
---|
| 3340 | identity = &input[idx];
|
---|
| 3341 | idx += idLen;
|
---|
| 3342 |
|
---|
| 3343 | /* Obfuscated Ticket Age 32-bits */
|
---|
| 3344 | ticketAge = (word32)((input[idx] << 24) | (input[idx+1] << 16) |
|
---|
| 3345 | (input[idx+2] << 8) | input[idx+3]);
|
---|
| 3346 | (void)ticketAge; /* not used */
|
---|
| 3347 | idx += OPAQUE32_LEN;
|
---|
| 3348 |
|
---|
| 3349 | /* binders - all binders */
|
---|
| 3350 | bindersLen = (word16)((input[idx] << 8) | input[idx+1]);
|
---|
| 3351 | if (bindersLen + OPAQUE16_LEN + idx > extLen) {
|
---|
| 3352 | SetError(CLIENT_HELLO_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3353 | return -1;
|
---|
| 3354 | }
|
---|
| 3355 | idx += OPAQUE16_LEN;
|
---|
| 3356 | binders = &input[idx];
|
---|
| 3357 | bindersLen += OPAQUE16_LEN; /* includes 2 bytes for total len */
|
---|
| 3358 | (void)binders; /* not used */
|
---|
| 3359 |
|
---|
| 3360 | /* Hash data up to binders for deriving binders in PSK extension. */
|
---|
| 3361 | HashRaw(session->sslServer, inputHello - HANDSHAKE_HEADER_SZ,
|
---|
| 3362 | inputHelloSz - bindersLen + HANDSHAKE_HEADER_SZ);
|
---|
| 3363 | HashRaw(session->sslClient, inputHello - HANDSHAKE_HEADER_SZ,
|
---|
| 3364 | inputHelloSz - bindersLen + HANDSHAKE_HEADER_SZ);
|
---|
| 3365 |
|
---|
| 3366 | /* call to decrypt session ticket */
|
---|
| 3367 | if (DoClientTicket(ssl, identity, idLen) != 0) {
|
---|
| 3368 | /* we aren't decrypting the resumption, since we know the master secret */
|
---|
| 3369 | /* ignore errors */
|
---|
| 3370 | }
|
---|
| 3371 | ssl->options.resuming = 1;
|
---|
| 3372 |
|
---|
| 3373 | /* Hash the rest of the ClientHello. */
|
---|
| 3374 | HashRaw(session->sslServer, inputHello + inputHelloSz - bindersLen, bindersLen);
|
---|
| 3375 | HashRaw(session->sslClient, inputHello + inputHelloSz - bindersLen, bindersLen);
|
---|
| 3376 | didHash = 1;
|
---|
| 3377 | break;
|
---|
| 3378 | }
|
---|
| 3379 | #endif /* HAVE_SESSION_TICKET */
|
---|
| 3380 | #endif /* WOLFSSL_TLS13 */
|
---|
| 3381 | case EXT_SUPPORTED_VERSIONS:
|
---|
| 3382 | break;
|
---|
| 3383 | case EXT_TICKET_ID:
|
---|
[457] | 3384 | /* make sure can read through ticket if there is a non blank one */
|
---|
| 3385 | if (extLen && extLen < ID_LEN) {
|
---|
| 3386 | SetError(CLIENT_HELLO_INPUT_STR, error, session,
|
---|
| 3387 | FATAL_ERROR_STATE);
|
---|
| 3388 | return -1;
|
---|
| 3389 | }
|
---|
| 3390 | if (extLen) {
|
---|
[464] | 3391 | if (session->ticketID == NULL) {
|
---|
[457] | 3392 | session->ticketID = (byte*)XMALLOC(ID_LEN,
|
---|
| 3393 | NULL, DYNAMIC_TYPE_SNIFFER_TICKET_ID);
|
---|
| 3394 | if (session->ticketID == 0) {
|
---|
| 3395 | SetError(MEMORY_STR, error, session,
|
---|
| 3396 | FATAL_ERROR_STATE);
|
---|
| 3397 | return -1;
|
---|
| 3398 | }
|
---|
| 3399 | }
|
---|
| 3400 | XMEMCPY(session->ticketID, input + extLen - ID_LEN, ID_LEN);
|
---|
| 3401 | }
|
---|
[464] | 3402 | break;
|
---|
[457] | 3403 | }
|
---|
| 3404 |
|
---|
| 3405 | input += extLen;
|
---|
| 3406 | *sslBytes -= extLen;
|
---|
| 3407 | len -= extLen + EXT_TYPE_SZ + LENGTH_SZ;
|
---|
| 3408 | }
|
---|
| 3409 |
|
---|
[464] | 3410 | if (!didHash) {
|
---|
| 3411 | HashRaw(session->sslServer, inputHello - HANDSHAKE_HEADER_SZ,
|
---|
| 3412 | inputHelloSz + HANDSHAKE_HEADER_SZ);
|
---|
| 3413 | HashRaw(session->sslClient, inputHello - HANDSHAKE_HEADER_SZ,
|
---|
| 3414 | inputHelloSz + HANDSHAKE_HEADER_SZ);
|
---|
| 3415 | }
|
---|
| 3416 |
|
---|
| 3417 | (void)ssl;
|
---|
| 3418 |
|
---|
| 3419 | return ret;
|
---|
[457] | 3420 | }
|
---|
| 3421 |
|
---|
| 3422 |
|
---|
| 3423 | #ifdef WOLFSSL_SNIFFER_WATCH
|
---|
| 3424 |
|
---|
[464] | 3425 | static int KeyWatchCall(SnifferSession* session, const byte* data, int dataSz,
|
---|
| 3426 | char* error)
|
---|
| 3427 | {
|
---|
| 3428 | int ret;
|
---|
| 3429 | Sha256 sha;
|
---|
| 3430 | byte digest[SHA256_DIGEST_SIZE];
|
---|
| 3431 |
|
---|
| 3432 | if (WatchCb == NULL) {
|
---|
| 3433 | SetError(WATCH_CB_MISSING_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3434 | return -1;
|
---|
| 3435 | }
|
---|
| 3436 |
|
---|
| 3437 | ret = wc_InitSha256(&sha);
|
---|
| 3438 | if (ret == 0)
|
---|
| 3439 | ret = wc_Sha256Update(&sha, data, dataSz);
|
---|
| 3440 | if (ret == 0)
|
---|
| 3441 | ret = wc_Sha256Final(&sha, digest);
|
---|
| 3442 | if (ret != 0) {
|
---|
| 3443 | SetError(WATCH_HASH_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3444 | return -1;
|
---|
| 3445 | }
|
---|
| 3446 |
|
---|
| 3447 | ret = WatchCb((void*)session, digest, sizeof(digest),
|
---|
| 3448 | data, dataSz, WatchCbCtx, error);
|
---|
| 3449 | if (ret != 0) {
|
---|
| 3450 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 3451 | INC_STAT(SnifferStats.sslKeysUnmatched);
|
---|
| 3452 | #endif
|
---|
| 3453 | SetError(WATCH_FAIL_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3454 | ret = -1;
|
---|
| 3455 | }
|
---|
| 3456 | else {
|
---|
| 3457 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 3458 | INC_STAT(SnifferStats.sslKeyMatches);
|
---|
| 3459 | #endif
|
---|
| 3460 | }
|
---|
| 3461 | return ret;
|
---|
| 3462 | }
|
---|
| 3463 |
|
---|
[457] | 3464 | /* Process Certificate */
|
---|
| 3465 | static int ProcessCertificate(const byte* input, int* sslBytes,
|
---|
| 3466 | SnifferSession* session, char* error)
|
---|
| 3467 | {
|
---|
| 3468 | word32 certChainSz;
|
---|
| 3469 | word32 certSz;
|
---|
| 3470 |
|
---|
| 3471 | /* If the receiver is the server, this is the client certificate message,
|
---|
| 3472 | * and it should be ignored at this point. */
|
---|
| 3473 | if (session->flags.side == WOLFSSL_SERVER_END)
|
---|
| 3474 | return 0;
|
---|
| 3475 |
|
---|
| 3476 | if (*sslBytes < CERT_HEADER_SZ) {
|
---|
| 3477 | SetError(BAD_CERT_MSG_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3478 | return -1;
|
---|
| 3479 | }
|
---|
[464] | 3480 |
|
---|
| 3481 | #ifdef WOLFSSL_TLS13
|
---|
| 3482 | if (IsAtLeastTLSv1_3(session->sslServer->version)) {
|
---|
| 3483 | /* skip 1 byte (Request context len) */
|
---|
| 3484 | input += OPAQUE8_LEN;
|
---|
| 3485 | *sslBytes -= OPAQUE8_LEN;
|
---|
| 3486 | }
|
---|
| 3487 | #endif
|
---|
| 3488 |
|
---|
[457] | 3489 | ato24(input, &certChainSz);
|
---|
| 3490 | *sslBytes -= CERT_HEADER_SZ;
|
---|
| 3491 | input += CERT_HEADER_SZ;
|
---|
| 3492 |
|
---|
| 3493 | if (*sslBytes < (int)certChainSz) {
|
---|
| 3494 | SetError(BAD_CERT_MSG_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3495 | return -1;
|
---|
| 3496 | }
|
---|
| 3497 |
|
---|
| 3498 | ato24(input, &certSz);
|
---|
| 3499 | input += OPAQUE24_LEN;
|
---|
| 3500 | if (*sslBytes < (int)certSz) {
|
---|
| 3501 | SetError(BAD_CERT_MSG_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3502 | return -1;
|
---|
| 3503 | }
|
---|
| 3504 |
|
---|
| 3505 | *sslBytes -= certChainSz;
|
---|
| 3506 |
|
---|
[464] | 3507 | return KeyWatchCall(session, input, certSz, error);
|
---|
[457] | 3508 | }
|
---|
| 3509 |
|
---|
| 3510 | #endif
|
---|
| 3511 |
|
---|
| 3512 |
|
---|
| 3513 | /* Process Finished */
|
---|
| 3514 | static int ProcessFinished(const byte* input, int size, int* sslBytes,
|
---|
| 3515 | SnifferSession* session, char* error)
|
---|
| 3516 | {
|
---|
[464] | 3517 | WOLFSSL* ssl;
|
---|
[457] | 3518 | word32 inOutIdx = 0;
|
---|
| 3519 | int ret;
|
---|
| 3520 |
|
---|
| 3521 | if (session->flags.side == WOLFSSL_SERVER_END)
|
---|
| 3522 | ssl = session->sslServer;
|
---|
| 3523 | else
|
---|
| 3524 | ssl = session->sslClient;
|
---|
| 3525 |
|
---|
[464] | 3526 | #ifdef WOLFSSL_TLS13
|
---|
| 3527 | if (IsAtLeastTLSv1_3(ssl->version)) {
|
---|
| 3528 | ret = DoTls13Finished(ssl, input, &inOutIdx, (word32)size,
|
---|
| 3529 | (word32)*sslBytes, SNIFF);
|
---|
| 3530 |
|
---|
| 3531 | ssl->options.handShakeState = HANDSHAKE_DONE;
|
---|
| 3532 | ssl->options.handShakeDone = 1;
|
---|
| 3533 | }
|
---|
| 3534 | else
|
---|
| 3535 | #endif
|
---|
| 3536 | {
|
---|
| 3537 | ret = DoFinished(ssl, input, &inOutIdx, (word32)size,
|
---|
| 3538 | (word32)*sslBytes, SNIFF);
|
---|
| 3539 | }
|
---|
[457] | 3540 | *sslBytes -= (int)inOutIdx;
|
---|
| 3541 |
|
---|
| 3542 | if (ret < 0) {
|
---|
| 3543 | SetError(BAD_FINISHED_MSG, error, session, FATAL_ERROR_STATE);
|
---|
| 3544 | return ret;
|
---|
| 3545 | }
|
---|
| 3546 |
|
---|
| 3547 | if (ret == 0 && session->flags.cached == 0) {
|
---|
| 3548 | if (session->sslServer->options.haveSessionId) {
|
---|
| 3549 | WOLFSSL_SESSION* sess = GetSession(session->sslServer, NULL, 0);
|
---|
| 3550 | if (sess == NULL) {
|
---|
| 3551 | AddSession(session->sslServer); /* don't re add */
|
---|
| 3552 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 3553 | INC_STAT(SnifferStats.sslResumptionInserts);
|
---|
| 3554 | #endif
|
---|
| 3555 | }
|
---|
| 3556 | session->flags.cached = 1;
|
---|
| 3557 | }
|
---|
| 3558 | }
|
---|
| 3559 |
|
---|
[464] | 3560 | #ifdef WOLFSSL_TLS13
|
---|
| 3561 | /* Derive TLS v1.3 traffic keys */
|
---|
| 3562 | if (IsAtLeastTLSv1_3(ssl->version)) {
|
---|
| 3563 | if (!session->flags.gotFinished) {
|
---|
| 3564 | /* When either side gets "finished" derive master secret and keys */
|
---|
| 3565 | ret = DeriveMasterSecret(session->sslServer);
|
---|
| 3566 | ret += DeriveMasterSecret(session->sslClient);
|
---|
| 3567 | #ifdef WOLFSSL_EARLY_DATA
|
---|
| 3568 | ret += DeriveTls13Keys(session->sslServer, traffic_key, ENCRYPT_AND_DECRYPT_SIDE, ssl->earlyData == no_early_data);
|
---|
| 3569 | ret += DeriveTls13Keys(session->sslClient, traffic_key, ENCRYPT_AND_DECRYPT_SIDE, ssl->earlyData == no_early_data);
|
---|
| 3570 | #else
|
---|
| 3571 | ret += DeriveTls13Keys(session->sslServer, traffic_key, ENCRYPT_AND_DECRYPT_SIDE, 1);
|
---|
| 3572 | ret += DeriveTls13Keys(session->sslClient, traffic_key, ENCRYPT_AND_DECRYPT_SIDE, 1);
|
---|
| 3573 | #endif
|
---|
| 3574 |
|
---|
| 3575 | if (ret != 0) {
|
---|
| 3576 | SetError(BAD_FINISHED_MSG, error, session, FATAL_ERROR_STATE);
|
---|
| 3577 | return -1;
|
---|
| 3578 | }
|
---|
| 3579 |
|
---|
| 3580 | session->flags.gotFinished = 1;
|
---|
| 3581 | #ifdef SHOW_SECRETS
|
---|
| 3582 | ShowTlsSecrets(session);
|
---|
| 3583 | #endif
|
---|
| 3584 | }
|
---|
| 3585 |
|
---|
| 3586 | if (session->flags.side == WOLFSSL_SERVER_END) {
|
---|
| 3587 | /* finished from client to server */
|
---|
| 3588 | ret = SetKeysSide(session->sslServer, DECRYPT_SIDE_ONLY);
|
---|
| 3589 | ret += SetKeysSide(session->sslClient, ENCRYPT_SIDE_ONLY);
|
---|
| 3590 |
|
---|
| 3591 | #ifdef HAVE_SESSION_TICKET
|
---|
| 3592 | /* derive resumption secret for next session - on finished (from client) */
|
---|
| 3593 | ret += DeriveResumptionSecret(session->sslClient, session->sslClient->session.masterSecret);
|
---|
| 3594 |
|
---|
| 3595 | /* copy resumption secret to server */
|
---|
| 3596 | XMEMCPY(session->sslServer->session.masterSecret,
|
---|
| 3597 | session->sslClient->session.masterSecret, SECRET_LEN);
|
---|
| 3598 | #ifdef SHOW_SECRETS
|
---|
| 3599 | PrintSecret("resumption secret", session->sslClient->session.masterSecret, SECRET_LEN);
|
---|
| 3600 | #endif
|
---|
| 3601 | #endif
|
---|
| 3602 | }
|
---|
| 3603 | else {
|
---|
| 3604 | /* finished from server to client */
|
---|
| 3605 | ret = SetKeysSide(session->sslServer, ENCRYPT_SIDE_ONLY);
|
---|
| 3606 | ret += SetKeysSide(session->sslClient, DECRYPT_SIDE_ONLY);
|
---|
| 3607 | }
|
---|
| 3608 |
|
---|
| 3609 | if (ret != 0) {
|
---|
| 3610 | SetError(BAD_FINISHED_MSG, error, session, FATAL_ERROR_STATE);
|
---|
| 3611 | return -1;
|
---|
| 3612 | }
|
---|
| 3613 | }
|
---|
| 3614 | #endif
|
---|
| 3615 |
|
---|
[457] | 3616 | /* If receiving a finished message from one side, free the resources
|
---|
| 3617 | * from the other side's tracker. */
|
---|
| 3618 | if (session->flags.side == WOLFSSL_SERVER_END)
|
---|
| 3619 | FreeHandshakeResources(session->sslClient);
|
---|
| 3620 | else
|
---|
| 3621 | FreeHandshakeResources(session->sslServer);
|
---|
| 3622 |
|
---|
| 3623 | return ret;
|
---|
| 3624 | }
|
---|
| 3625 |
|
---|
| 3626 |
|
---|
| 3627 | /* Process HandShake input */
|
---|
| 3628 | static int DoHandShake(const byte* input, int* sslBytes,
|
---|
[464] | 3629 | SnifferSession* session, char* error, word16 rhSize)
|
---|
[457] | 3630 | {
|
---|
| 3631 | byte type;
|
---|
| 3632 | int size;
|
---|
| 3633 | int ret = 0;
|
---|
[464] | 3634 | WOLFSSL* ssl;
|
---|
| 3635 | int startBytes;
|
---|
[457] | 3636 |
|
---|
[464] | 3637 | (void)rhSize;
|
---|
| 3638 |
|
---|
| 3639 | #ifdef HAVE_MAX_FRAGMENT
|
---|
| 3640 | if (session->tlsFragBuf) {
|
---|
| 3641 | XMEMCPY(session->tlsFragBuf + session->tlsFragOffset, input, rhSize);
|
---|
| 3642 | session->tlsFragOffset += rhSize;
|
---|
| 3643 | *sslBytes -= rhSize;
|
---|
| 3644 |
|
---|
| 3645 | if (session->tlsFragOffset < session->tlsFragSize) {
|
---|
| 3646 | return 0;
|
---|
| 3647 | }
|
---|
| 3648 |
|
---|
| 3649 | /* reassembled complete fragment */
|
---|
| 3650 | input = session->tlsFragBuf;
|
---|
| 3651 | *sslBytes = session->tlsFragSize;
|
---|
| 3652 | rhSize = session->tlsFragSize;
|
---|
| 3653 | }
|
---|
| 3654 | #endif
|
---|
| 3655 |
|
---|
[457] | 3656 | if (*sslBytes < HANDSHAKE_HEADER_SZ) {
|
---|
| 3657 | SetError(HANDSHAKE_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3658 | return -1;
|
---|
| 3659 | }
|
---|
| 3660 | type = input[0];
|
---|
| 3661 | size = (input[1] << 16) | (input[2] << 8) | input[3];
|
---|
| 3662 |
|
---|
| 3663 | input += HANDSHAKE_HEADER_SZ;
|
---|
| 3664 | *sslBytes -= HANDSHAKE_HEADER_SZ;
|
---|
| 3665 | startBytes = *sslBytes;
|
---|
| 3666 |
|
---|
| 3667 | if (*sslBytes < size) {
|
---|
| 3668 | Trace(SPLIT_HANDSHAKE_MSG_STR);
|
---|
| 3669 | *sslBytes = 0;
|
---|
| 3670 | return ret;
|
---|
| 3671 | }
|
---|
| 3672 |
|
---|
[464] | 3673 | if (session->flags.side == WOLFSSL_SERVER_END)
|
---|
| 3674 | ssl = session->sslServer;
|
---|
| 3675 | else
|
---|
| 3676 | ssl = session->sslClient;
|
---|
[457] | 3677 |
|
---|
[464] | 3678 | #ifdef HAVE_SECURE_RENEGOTIATION
|
---|
| 3679 | if (!IsAtLeastTLSv1_3(ssl->version)) {
|
---|
| 3680 | /* A session's arrays are released when the handshake is completed. */
|
---|
| 3681 | if (session->sslServer->arrays == NULL &&
|
---|
| 3682 | session->sslClient->arrays == NULL) {
|
---|
| 3683 |
|
---|
| 3684 | SetError(NO_SECURE_RENEGOTIATION, error, session, FATAL_ERROR_STATE);
|
---|
| 3685 | return -1;
|
---|
| 3686 | }
|
---|
[457] | 3687 | }
|
---|
[464] | 3688 | #endif
|
---|
[457] | 3689 |
|
---|
[464] | 3690 | #ifdef HAVE_MAX_FRAGMENT
|
---|
| 3691 | if (rhSize < size) {
|
---|
| 3692 | /* partial fragment, let's reassemble */
|
---|
| 3693 | if (session->tlsFragBuf == NULL) {
|
---|
| 3694 | session->tlsFragOffset = 0;
|
---|
| 3695 | session->tlsFragSize = size + HANDSHAKE_HEADER_SZ;
|
---|
| 3696 | session->tlsFragBuf = (byte*)XMALLOC(session->tlsFragSize, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
---|
| 3697 | if (session->tlsFragBuf == NULL) {
|
---|
| 3698 | SetError(MEMORY_STR, error, NULL, 0);
|
---|
| 3699 | return 0;
|
---|
| 3700 | }
|
---|
| 3701 |
|
---|
| 3702 | /* include the handshake header */
|
---|
| 3703 | input -= HANDSHAKE_HEADER_SZ;
|
---|
| 3704 | *sslBytes += HANDSHAKE_HEADER_SZ;
|
---|
| 3705 | }
|
---|
| 3706 |
|
---|
| 3707 | XMEMCPY(session->tlsFragBuf + session->tlsFragOffset, input, rhSize);
|
---|
| 3708 | session->tlsFragOffset += rhSize;
|
---|
| 3709 | *sslBytes -= rhSize;
|
---|
| 3710 | return 0;
|
---|
| 3711 | }
|
---|
| 3712 | #endif
|
---|
| 3713 |
|
---|
| 3714 | #ifdef WOLFSSL_TLS13
|
---|
| 3715 | if (type != client_hello && type != server_hello) {
|
---|
| 3716 | /* For resumption the hash is before / after client_hello PSK binder */
|
---|
| 3717 | /* hash the packet including header */
|
---|
| 3718 | /* TLS v1.3 requires the hash for the handshake and transfer key derivation */
|
---|
| 3719 | /* we hash even for non TLS v1.3, since we don't know if its actually
|
---|
| 3720 | TLS v1.3 till later at EXT_SUPPORTED_VERSIONS in server_hello */
|
---|
| 3721 | /* hello retry request restarts hash prior to server_hello hash calc */
|
---|
| 3722 | HashRaw(session->sslServer, input - HANDSHAKE_HEADER_SZ, size + HANDSHAKE_HEADER_SZ);
|
---|
| 3723 | HashRaw(session->sslClient, input - HANDSHAKE_HEADER_SZ, size + HANDSHAKE_HEADER_SZ);
|
---|
| 3724 | }
|
---|
| 3725 | #endif
|
---|
[457] | 3726 | #ifdef HAVE_EXTENDED_MASTER
|
---|
| 3727 | if (session->hash) {
|
---|
| 3728 | if (HashUpdate(session->hash, input, size) != 0) {
|
---|
| 3729 | SetError(EXTENDED_MASTER_HASH_STR, error,
|
---|
| 3730 | session, FATAL_ERROR_STATE);
|
---|
[464] | 3731 | ret = -1;
|
---|
| 3732 | goto exit;
|
---|
[457] | 3733 | }
|
---|
| 3734 | }
|
---|
| 3735 | #endif
|
---|
| 3736 |
|
---|
| 3737 | switch (type) {
|
---|
| 3738 | case hello_verify_request:
|
---|
| 3739 | Trace(GOT_HELLO_VERIFY_STR);
|
---|
| 3740 | break;
|
---|
| 3741 | case hello_request:
|
---|
| 3742 | Trace(GOT_HELLO_REQUEST_STR);
|
---|
| 3743 | break;
|
---|
| 3744 | case session_ticket:
|
---|
| 3745 | Trace(GOT_SESSION_TICKET_STR);
|
---|
| 3746 | ret = ProcessSessionTicket(input, sslBytes, session, error);
|
---|
| 3747 | break;
|
---|
| 3748 | case server_hello:
|
---|
| 3749 | Trace(GOT_SERVER_HELLO_STR);
|
---|
| 3750 | ret = ProcessServerHello(size, input, sslBytes, session, error);
|
---|
| 3751 | break;
|
---|
| 3752 | case certificate_request:
|
---|
| 3753 | Trace(GOT_CERT_REQ_STR);
|
---|
| 3754 | break;
|
---|
| 3755 | case server_key_exchange:
|
---|
| 3756 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 3757 | INC_STAT(SnifferStats.sslEphemeralMisses);
|
---|
| 3758 | #endif
|
---|
| 3759 | Trace(GOT_SERVER_KEY_EX_STR);
|
---|
| 3760 | /* can't know temp key passively */
|
---|
| 3761 | SetError(BAD_CIPHER_SPEC_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 3762 | ret = -1;
|
---|
| 3763 | break;
|
---|
[464] | 3764 | case encrypted_extensions:
|
---|
| 3765 | Trace(GOT_ENC_EXT_STR);
|
---|
| 3766 | ssl->msgsReceived.got_encrypted_extensions = 1;
|
---|
| 3767 | break;
|
---|
[457] | 3768 | case certificate:
|
---|
| 3769 | Trace(GOT_CERT_STR);
|
---|
| 3770 | if (session->flags.side == WOLFSSL_SERVER_END) {
|
---|
| 3771 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 3772 | INC_STAT(SnifferStats.sslClientAuthConns);
|
---|
| 3773 | #endif
|
---|
| 3774 | }
|
---|
| 3775 | #ifdef WOLFSSL_SNIFFER_WATCH
|
---|
| 3776 | ret = ProcessCertificate(input, sslBytes, session, error);
|
---|
| 3777 | #endif
|
---|
| 3778 | break;
|
---|
| 3779 | case server_hello_done:
|
---|
| 3780 | Trace(GOT_SERVER_HELLO_DONE_STR);
|
---|
| 3781 | break;
|
---|
| 3782 | case finished:
|
---|
| 3783 | Trace(GOT_FINISHED_STR);
|
---|
| 3784 | ret = ProcessFinished(input, size, sslBytes, session, error);
|
---|
| 3785 | break;
|
---|
| 3786 | case client_hello:
|
---|
| 3787 | Trace(GOT_CLIENT_HELLO_STR);
|
---|
| 3788 | ret = ProcessClientHello(input, sslBytes, session, error);
|
---|
| 3789 | break;
|
---|
| 3790 | case client_key_exchange:
|
---|
| 3791 | Trace(GOT_CLIENT_KEY_EX_STR);
|
---|
| 3792 | #ifdef HAVE_EXTENDED_MASTER
|
---|
| 3793 | if (session->flags.expectEms && session->hash != NULL) {
|
---|
| 3794 | if (HashCopy(session->sslServer->hsHashes,
|
---|
| 3795 | session->hash) == 0 &&
|
---|
| 3796 | HashCopy(session->sslClient->hsHashes,
|
---|
| 3797 | session->hash) == 0) {
|
---|
| 3798 |
|
---|
| 3799 | session->sslServer->options.haveEMS = 1;
|
---|
| 3800 | session->sslClient->options.haveEMS = 1;
|
---|
| 3801 | }
|
---|
| 3802 | else {
|
---|
| 3803 | SetError(EXTENDED_MASTER_HASH_STR, error,
|
---|
| 3804 | session, FATAL_ERROR_STATE);
|
---|
| 3805 | ret = -1;
|
---|
| 3806 | }
|
---|
| 3807 | XMEMSET(session->hash, 0, sizeof(HsHashes));
|
---|
| 3808 | XFREE(session->hash, NULL, DYNAMIC_TYPE_HASHES);
|
---|
| 3809 | session->hash = NULL;
|
---|
| 3810 | }
|
---|
| 3811 | else {
|
---|
| 3812 | session->sslServer->options.haveEMS = 0;
|
---|
| 3813 | session->sslClient->options.haveEMS = 0;
|
---|
| 3814 | }
|
---|
| 3815 | #endif
|
---|
| 3816 | if (ret == 0)
|
---|
| 3817 | ret = ProcessClientKeyExchange(input, sslBytes, session, error);
|
---|
| 3818 | break;
|
---|
| 3819 | case certificate_verify:
|
---|
| 3820 | Trace(GOT_CERT_VER_STR);
|
---|
| 3821 | break;
|
---|
| 3822 | case certificate_status:
|
---|
| 3823 | Trace(GOT_CERT_STATUS_STR);
|
---|
| 3824 | break;
|
---|
| 3825 | default:
|
---|
| 3826 | SetError(GOT_UNKNOWN_HANDSHAKE_STR, error, session, 0);
|
---|
[464] | 3827 | ret = -1;
|
---|
| 3828 | break;
|
---|
[457] | 3829 | }
|
---|
| 3830 |
|
---|
[464] | 3831 | #ifdef HAVE_EXTENDED_MASTER
|
---|
| 3832 | exit:
|
---|
| 3833 | #endif
|
---|
| 3834 | #ifdef HAVE_MAX_FRAGMENT
|
---|
| 3835 | if (session->tlsFragBuf) {
|
---|
| 3836 | XFREE(session->tlsFragBuf, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
---|
| 3837 | session->tlsFragBuf = NULL;
|
---|
| 3838 | }
|
---|
| 3839 | #endif
|
---|
| 3840 |
|
---|
[457] | 3841 | *sslBytes = startBytes - size; /* actual bytes of full process */
|
---|
| 3842 |
|
---|
| 3843 | return ret;
|
---|
| 3844 | }
|
---|
| 3845 |
|
---|
| 3846 |
|
---|
| 3847 | /* Decrypt input into plain output, 0 on success */
|
---|
[464] | 3848 | static int Decrypt(WOLFSSL* ssl, byte* output, const byte* input, word32 sz)
|
---|
[457] | 3849 | {
|
---|
| 3850 | int ret = 0;
|
---|
| 3851 |
|
---|
| 3852 | (void)output;
|
---|
| 3853 | (void)input;
|
---|
| 3854 | (void)sz;
|
---|
| 3855 |
|
---|
| 3856 | switch (ssl->specs.bulk_cipher_algorithm) {
|
---|
| 3857 | #ifdef BUILD_ARC4
|
---|
| 3858 | case wolfssl_rc4:
|
---|
| 3859 | wc_Arc4Process(ssl->decrypt.arc4, output, input, sz);
|
---|
| 3860 | break;
|
---|
| 3861 | #endif
|
---|
| 3862 |
|
---|
| 3863 | #ifdef BUILD_DES3
|
---|
| 3864 | case wolfssl_triple_des:
|
---|
| 3865 | ret = wc_Des3_CbcDecrypt(ssl->decrypt.des3, output, input, sz);
|
---|
| 3866 | break;
|
---|
| 3867 | #endif
|
---|
| 3868 |
|
---|
| 3869 | #ifdef BUILD_AES
|
---|
| 3870 | case wolfssl_aes:
|
---|
| 3871 | ret = wc_AesCbcDecrypt(ssl->decrypt.aes, output, input, sz);
|
---|
| 3872 | break;
|
---|
| 3873 | #endif
|
---|
| 3874 |
|
---|
| 3875 | #ifdef HAVE_HC128
|
---|
| 3876 | case wolfssl_hc128:
|
---|
| 3877 | wc_Hc128_Process(ssl->decrypt.hc128, output, input, sz);
|
---|
| 3878 | break;
|
---|
| 3879 | #endif
|
---|
| 3880 |
|
---|
| 3881 | #ifdef BUILD_RABBIT
|
---|
| 3882 | case wolfssl_rabbit:
|
---|
| 3883 | wc_RabbitProcess(ssl->decrypt.rabbit, output, input, sz);
|
---|
| 3884 | break;
|
---|
| 3885 | #endif
|
---|
| 3886 |
|
---|
| 3887 | #ifdef HAVE_CAMELLIA
|
---|
| 3888 | case wolfssl_camellia:
|
---|
| 3889 | wc_CamelliaCbcDecrypt(ssl->decrypt.cam, output, input, sz);
|
---|
| 3890 | break;
|
---|
| 3891 | #endif
|
---|
| 3892 |
|
---|
| 3893 | #ifdef HAVE_IDEA
|
---|
| 3894 | case wolfssl_idea:
|
---|
| 3895 | wc_IdeaCbcDecrypt(ssl->decrypt.idea, output, input, sz);
|
---|
| 3896 | break;
|
---|
| 3897 | #endif
|
---|
| 3898 |
|
---|
[464] | 3899 | #if defined(HAVE_AESGCM) || defined(HAVE_AESCCM)
|
---|
[457] | 3900 | case wolfssl_aes_gcm:
|
---|
[464] | 3901 | case wolfssl_aes_ccm: /* GCM AEAD macros use same size as CCM */
|
---|
| 3902 | if (sz >= (word32)(AESGCM_EXP_IV_SZ + ssl->specs.aead_mac_size)) {
|
---|
| 3903 | /* scratch buffer, sniffer ignores auth tag */
|
---|
| 3904 | wc_AesAuthEncryptFunc aes_auth_fn;
|
---|
[457] | 3905 | byte authTag[WOLFSSL_MIN_AUTH_TAG_SZ];
|
---|
| 3906 | byte nonce[AESGCM_NONCE_SZ];
|
---|
| 3907 | XMEMCPY(nonce, ssl->keys.aead_dec_imp_IV, AESGCM_IMP_IV_SZ);
|
---|
| 3908 | XMEMCPY(nonce + AESGCM_IMP_IV_SZ, input, AESGCM_EXP_IV_SZ);
|
---|
| 3909 |
|
---|
[464] | 3910 | /* use encrypt because we don't care about authtag */
|
---|
| 3911 | #if defined(BUILD_AESGCM) && defined(HAVE_AESCCM)
|
---|
| 3912 | aes_auth_fn = (ssl->specs.bulk_cipher_algorithm == wolfssl_aes_gcm)
|
---|
| 3913 | ? wc_AesGcmEncrypt : wc_AesCcmEncrypt;
|
---|
| 3914 | #elif defined(BUILD_AESGCM)
|
---|
| 3915 | aes_auth_fn = wc_AesGcmEncrypt;
|
---|
| 3916 | #else
|
---|
| 3917 | aes_auth_fn = wc_AesCcmEncrypt;
|
---|
| 3918 | #endif
|
---|
| 3919 | if (aes_auth_fn(ssl->decrypt.aes,
|
---|
[457] | 3920 | output,
|
---|
| 3921 | input + AESGCM_EXP_IV_SZ,
|
---|
| 3922 | sz - AESGCM_EXP_IV_SZ - ssl->specs.aead_mac_size,
|
---|
| 3923 | nonce, AESGCM_NONCE_SZ,
|
---|
| 3924 | authTag, sizeof(authTag),
|
---|
| 3925 | NULL, 0) < 0) {
|
---|
| 3926 | Trace(BAD_DECRYPT);
|
---|
| 3927 | ret = -1;
|
---|
| 3928 | }
|
---|
| 3929 | ForceZero(nonce, AESGCM_NONCE_SZ);
|
---|
| 3930 | }
|
---|
| 3931 | else {
|
---|
| 3932 | Trace(BAD_DECRYPT_SIZE);
|
---|
| 3933 | ret = -1;
|
---|
| 3934 | }
|
---|
| 3935 | break;
|
---|
[464] | 3936 | #endif
|
---|
[457] | 3937 |
|
---|
| 3938 | #ifdef HAVE_NULL_CIPHER
|
---|
| 3939 | case wolfssl_cipher_null:
|
---|
| 3940 | XMEMCPY(output, input, sz);
|
---|
| 3941 | break;
|
---|
| 3942 | #endif
|
---|
| 3943 |
|
---|
| 3944 | default:
|
---|
| 3945 | Trace(BAD_DECRYPT_TYPE);
|
---|
| 3946 | ret = -1;
|
---|
| 3947 | break;
|
---|
| 3948 | }
|
---|
| 3949 |
|
---|
| 3950 | return ret;
|
---|
| 3951 | }
|
---|
| 3952 |
|
---|
| 3953 |
|
---|
| 3954 | /* Decrypt input message into output, adjust output steam if needed */
|
---|
[464] | 3955 | static const byte* DecryptMessage(WOLFSSL* ssl, const byte* input, word32 sz,
|
---|
| 3956 | byte* output, int* error, int* advance, RecordLayerHeader* rh)
|
---|
[457] | 3957 | {
|
---|
| 3958 | int ivExtra = 0;
|
---|
[464] | 3959 | int ret;
|
---|
| 3960 |
|
---|
| 3961 | #ifdef WOLFSSL_TLS13
|
---|
| 3962 | if (IsAtLeastTLSv1_3(ssl->version)) {
|
---|
| 3963 | ret = DecryptTls13(ssl, output, input, sz, (byte*)rh, RECORD_HEADER_SZ);
|
---|
| 3964 | }
|
---|
| 3965 | else
|
---|
| 3966 | #endif
|
---|
| 3967 | {
|
---|
| 3968 | ret = Decrypt(ssl, output, input, sz);
|
---|
| 3969 | }
|
---|
[457] | 3970 | if (ret != 0) {
|
---|
| 3971 | *error = ret;
|
---|
| 3972 | return NULL;
|
---|
| 3973 | }
|
---|
| 3974 | ssl->keys.encryptSz = sz;
|
---|
| 3975 | if (ssl->options.tls1_1 && ssl->specs.cipher_type == block) {
|
---|
[464] | 3976 | output += ssl->specs.block_size; /* go past TLSv1.1 IV */
|
---|
[457] | 3977 | ivExtra = ssl->specs.block_size;
|
---|
| 3978 | *advance = ssl->specs.block_size;
|
---|
| 3979 | }
|
---|
| 3980 |
|
---|
| 3981 | if (ssl->specs.cipher_type == aead) {
|
---|
| 3982 | *advance = ssl->specs.aead_mac_size;
|
---|
| 3983 | ssl->keys.padSz = ssl->specs.aead_mac_size;
|
---|
| 3984 | }
|
---|
| 3985 | else
|
---|
| 3986 | ssl->keys.padSz = ssl->specs.hash_size;
|
---|
| 3987 |
|
---|
| 3988 | if (ssl->specs.cipher_type == block)
|
---|
| 3989 | ssl->keys.padSz += *(output + sz - ivExtra - 1) + 1;
|
---|
| 3990 |
|
---|
[464] | 3991 | #ifdef WOLFSSL_TLS13
|
---|
| 3992 | if (IsAtLeastTLSv1_3(ssl->version)) {
|
---|
| 3993 | word16 i = (word16)(sz - ssl->keys.padSz);
|
---|
| 3994 | /* Remove padding from end of plain text. */
|
---|
| 3995 | for (--i; i > 0; i--) {
|
---|
| 3996 | if (output[i] != 0)
|
---|
| 3997 | break;
|
---|
| 3998 | }
|
---|
| 3999 | /* Get the real content type from the end of the data. */
|
---|
| 4000 | rh->type = output[i];
|
---|
| 4001 | ssl->keys.padSz = sz - i;
|
---|
| 4002 | }
|
---|
| 4003 | #endif
|
---|
| 4004 | (void)rh;
|
---|
| 4005 |
|
---|
[457] | 4006 | return output;
|
---|
| 4007 | }
|
---|
| 4008 |
|
---|
| 4009 |
|
---|
| 4010 | /* remove session from table, use rowHint if no info (means we have a lock) */
|
---|
| 4011 | static void RemoveSession(SnifferSession* session, IpInfo* ipInfo,
|
---|
| 4012 | TcpInfo* tcpInfo, word32 rowHint)
|
---|
| 4013 | {
|
---|
| 4014 | SnifferSession* previous = 0;
|
---|
| 4015 | SnifferSession* current;
|
---|
| 4016 | word32 row = rowHint;
|
---|
| 4017 | int haveLock = 0;
|
---|
| 4018 |
|
---|
| 4019 | if (ipInfo && tcpInfo)
|
---|
| 4020 | row = SessionHash(ipInfo, tcpInfo);
|
---|
| 4021 | else
|
---|
| 4022 | haveLock = 1;
|
---|
| 4023 |
|
---|
| 4024 | assert(row <= HASH_SIZE);
|
---|
| 4025 | Trace(REMOVE_SESSION_STR);
|
---|
| 4026 |
|
---|
| 4027 | if (!haveLock)
|
---|
| 4028 | wc_LockMutex(&SessionMutex);
|
---|
| 4029 |
|
---|
| 4030 | current = SessionTable[row];
|
---|
| 4031 |
|
---|
| 4032 | while (current) {
|
---|
| 4033 | if (current == session) {
|
---|
| 4034 | if (previous)
|
---|
| 4035 | previous->next = current->next;
|
---|
| 4036 | else
|
---|
| 4037 | SessionTable[row] = current->next;
|
---|
| 4038 | FreeSnifferSession(session);
|
---|
| 4039 | TraceRemovedSession();
|
---|
| 4040 | break;
|
---|
| 4041 | }
|
---|
| 4042 | previous = current;
|
---|
| 4043 | current = current->next;
|
---|
| 4044 | }
|
---|
| 4045 |
|
---|
| 4046 | if (!haveLock)
|
---|
| 4047 | wc_UnLockMutex(&SessionMutex);
|
---|
| 4048 | }
|
---|
| 4049 |
|
---|
| 4050 |
|
---|
| 4051 | /* Remove stale sessions from the Session Table, have a lock */
|
---|
| 4052 | static void RemoveStaleSessions(void)
|
---|
| 4053 | {
|
---|
| 4054 | word32 i;
|
---|
| 4055 | SnifferSession* session;
|
---|
| 4056 |
|
---|
| 4057 | for (i = 0; i < HASH_SIZE; i++) {
|
---|
| 4058 | session = SessionTable[i];
|
---|
| 4059 | while (session) {
|
---|
| 4060 | SnifferSession* next = session->next;
|
---|
[464] | 4061 | if (XTIME(NULL) >= session->lastUsed + WOLFSSL_SNIFFER_TIMEOUT) {
|
---|
[457] | 4062 | TraceStaleSession();
|
---|
| 4063 | RemoveSession(session, NULL, NULL, i);
|
---|
| 4064 | }
|
---|
| 4065 | session = next;
|
---|
| 4066 | }
|
---|
| 4067 | }
|
---|
| 4068 | }
|
---|
| 4069 |
|
---|
| 4070 |
|
---|
| 4071 | /* Create a new Sniffer Session */
|
---|
| 4072 | static SnifferSession* CreateSession(IpInfo* ipInfo, TcpInfo* tcpInfo,
|
---|
| 4073 | char* error)
|
---|
| 4074 | {
|
---|
| 4075 | SnifferSession* session = 0;
|
---|
| 4076 | int row;
|
---|
| 4077 |
|
---|
| 4078 | Trace(NEW_SESSION_STR);
|
---|
| 4079 | /* create a new one */
|
---|
| 4080 | session = (SnifferSession*)XMALLOC(sizeof(SnifferSession),
|
---|
| 4081 | NULL, DYNAMIC_TYPE_SNIFFER_SESSION);
|
---|
| 4082 | if (session == NULL) {
|
---|
| 4083 | SetError(MEMORY_STR, error, NULL, 0);
|
---|
| 4084 | return 0;
|
---|
| 4085 | }
|
---|
| 4086 | InitSession(session);
|
---|
| 4087 | #ifdef HAVE_EXTENDED_MASTER
|
---|
| 4088 | {
|
---|
| 4089 | HsHashes* newHash = (HsHashes*)XMALLOC(sizeof(HsHashes),
|
---|
| 4090 | NULL, DYNAMIC_TYPE_HASHES);
|
---|
| 4091 | if (newHash == NULL) {
|
---|
| 4092 | SetError(MEMORY_STR, error, NULL, 0);
|
---|
| 4093 | XFREE(session, NULL, DYNAMIC_TYPE_SNIFFER_SESSION);
|
---|
| 4094 | return 0;
|
---|
| 4095 | }
|
---|
| 4096 | if (HashInit(newHash) != 0) {
|
---|
| 4097 | SetError(EXTENDED_MASTER_HASH_STR, error, NULL, 0);
|
---|
| 4098 | XFREE(session, NULL, DYNAMIC_TYPE_SNIFFER_SESSION);
|
---|
| 4099 | return 0;
|
---|
| 4100 | }
|
---|
| 4101 | session->hash = newHash;
|
---|
| 4102 | }
|
---|
| 4103 | #endif
|
---|
| 4104 | session->server = ipInfo->dst;
|
---|
| 4105 | session->client = ipInfo->src;
|
---|
| 4106 | session->srvPort = (word16)tcpInfo->dstPort;
|
---|
| 4107 | session->cliPort = (word16)tcpInfo->srcPort;
|
---|
| 4108 | session->cliSeqStart = tcpInfo->sequence;
|
---|
| 4109 | session->cliExpected = 1; /* relative */
|
---|
[464] | 4110 | session->lastUsed= XTIME(NULL);
|
---|
[457] | 4111 | session->keySz = 0;
|
---|
| 4112 | #ifdef HAVE_SNI
|
---|
| 4113 | session->sni = NULL;
|
---|
| 4114 | #endif
|
---|
| 4115 |
|
---|
| 4116 | session->context = GetSnifferServer(ipInfo, tcpInfo);
|
---|
| 4117 | if (session->context == NULL) {
|
---|
| 4118 | SetError(SERVER_NOT_REG_STR, error, NULL, 0);
|
---|
| 4119 | XFREE(session, NULL, DYNAMIC_TYPE_SNIFFER_SESSION);
|
---|
| 4120 | return 0;
|
---|
| 4121 | }
|
---|
| 4122 |
|
---|
[464] | 4123 | session->sslServer = wolfSSL_new(session->context->ctx);
|
---|
[457] | 4124 | if (session->sslServer == NULL) {
|
---|
| 4125 | SetError(BAD_NEW_SSL_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 4126 | XFREE(session, NULL, DYNAMIC_TYPE_SNIFFER_SESSION);
|
---|
| 4127 | return 0;
|
---|
| 4128 | }
|
---|
[464] | 4129 | session->sslClient = wolfSSL_new(session->context->ctx);
|
---|
[457] | 4130 | if (session->sslClient == NULL) {
|
---|
[464] | 4131 | wolfSSL_free(session->sslServer);
|
---|
[457] | 4132 | session->sslServer = 0;
|
---|
| 4133 |
|
---|
| 4134 | SetError(BAD_NEW_SSL_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 4135 | XFREE(session, NULL, DYNAMIC_TYPE_SNIFFER_SESSION);
|
---|
| 4136 | return 0;
|
---|
| 4137 | }
|
---|
| 4138 | /* put server back into server mode */
|
---|
| 4139 | session->sslServer->options.side = WOLFSSL_SERVER_END;
|
---|
| 4140 |
|
---|
| 4141 | row = SessionHash(ipInfo, tcpInfo);
|
---|
| 4142 |
|
---|
| 4143 | /* add it to the session table */
|
---|
| 4144 | wc_LockMutex(&SessionMutex);
|
---|
| 4145 |
|
---|
| 4146 | session->next = SessionTable[row];
|
---|
| 4147 | SessionTable[row] = session;
|
---|
| 4148 |
|
---|
| 4149 | SessionCount++;
|
---|
| 4150 |
|
---|
| 4151 | if ( (SessionCount % HASH_SIZE) == 0) {
|
---|
| 4152 | TraceFindingStale();
|
---|
| 4153 | RemoveStaleSessions();
|
---|
| 4154 | }
|
---|
| 4155 |
|
---|
| 4156 | wc_UnLockMutex(&SessionMutex);
|
---|
| 4157 |
|
---|
| 4158 | /* CreateSession is called in response to a SYN packet, we know this
|
---|
| 4159 | * is headed to the server. Also we know the server is one we care
|
---|
| 4160 | * about as we've passed the GetSnifferServer() successfully. */
|
---|
| 4161 | session->flags.side = WOLFSSL_SERVER_END;
|
---|
| 4162 |
|
---|
| 4163 | return session;
|
---|
| 4164 | }
|
---|
| 4165 |
|
---|
| 4166 |
|
---|
| 4167 | #ifdef OLD_HELLO_ALLOWED
|
---|
| 4168 |
|
---|
| 4169 | /* Process Old Client Hello Input */
|
---|
| 4170 | static int DoOldHello(SnifferSession* session, const byte* sslFrame,
|
---|
| 4171 | int* rhSize, int* sslBytes, char* error)
|
---|
| 4172 | {
|
---|
| 4173 | const byte* input = sslFrame;
|
---|
| 4174 | byte b0, b1;
|
---|
| 4175 | word32 idx = 0;
|
---|
| 4176 | int ret;
|
---|
| 4177 |
|
---|
| 4178 | Trace(GOT_OLD_CLIENT_HELLO_STR);
|
---|
| 4179 | session->flags.clientHello = 1; /* don't process again */
|
---|
| 4180 | b0 = *input++;
|
---|
| 4181 | b1 = *input++;
|
---|
| 4182 | *sslBytes -= 2;
|
---|
| 4183 | *rhSize = ((b0 & 0x7f) << 8) | b1;
|
---|
| 4184 |
|
---|
| 4185 | if (*rhSize > *sslBytes) {
|
---|
| 4186 | SetError(OLD_CLIENT_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 4187 | return -1;
|
---|
| 4188 | }
|
---|
| 4189 |
|
---|
| 4190 | ret = ProcessOldClientHello(session->sslServer, input, &idx, *sslBytes,
|
---|
| 4191 | (word16)*rhSize);
|
---|
| 4192 | if (ret < 0 && ret != MATCH_SUITE_ERROR) {
|
---|
| 4193 | SetError(BAD_OLD_CLIENT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 4194 | return -1;
|
---|
| 4195 | }
|
---|
| 4196 |
|
---|
| 4197 | Trace(OLD_CLIENT_OK_STR);
|
---|
| 4198 | XMEMCPY(session->sslClient->arrays->clientRandom,
|
---|
| 4199 | session->sslServer->arrays->clientRandom, RAN_LEN);
|
---|
| 4200 |
|
---|
| 4201 | *sslBytes -= *rhSize;
|
---|
| 4202 | return 0;
|
---|
| 4203 | }
|
---|
| 4204 |
|
---|
| 4205 | #endif /* OLD_HELLO_ALLOWED */
|
---|
| 4206 |
|
---|
| 4207 |
|
---|
| 4208 | #if 0
|
---|
| 4209 | /* Calculate the TCP checksum, see RFC 1071 */
|
---|
| 4210 | /* return 0 for success, -1 on error */
|
---|
| 4211 | /* can be called from decode() with
|
---|
| 4212 | TcpChecksum(&ipInfo, &tcpInfo, sslBytes, packet + ipInfo.length);
|
---|
| 4213 | could also add a 64bit version if type available and using this
|
---|
| 4214 | */
|
---|
| 4215 | int TcpChecksum(IpInfo* ipInfo, TcpInfo* tcpInfo, int dataLen,
|
---|
| 4216 | const byte* packet)
|
---|
| 4217 | {
|
---|
| 4218 | TcpPseudoHdr pseudo;
|
---|
| 4219 | int count = PSEUDO_HDR_SZ;
|
---|
| 4220 | const word16* data = (word16*)&pseudo;
|
---|
| 4221 | word32 sum = 0;
|
---|
| 4222 | word16 checksum;
|
---|
| 4223 |
|
---|
| 4224 | pseudo.src = ipInfo->src;
|
---|
| 4225 | pseudo.dst = ipInfo->dst;
|
---|
| 4226 | pseudo.rsv = 0;
|
---|
| 4227 | pseudo.protocol = TCP_PROTO;
|
---|
| 4228 | pseudo.length = htons(tcpInfo->length + dataLen);
|
---|
| 4229 |
|
---|
| 4230 | /* pseudo header sum */
|
---|
| 4231 | while (count >= 2) {
|
---|
| 4232 | sum += *data++;
|
---|
| 4233 | count -= 2;
|
---|
| 4234 | }
|
---|
| 4235 |
|
---|
| 4236 | count = tcpInfo->length + dataLen;
|
---|
| 4237 | data = (word16*)packet;
|
---|
| 4238 |
|
---|
| 4239 | /* main sum */
|
---|
| 4240 | while (count > 1) {
|
---|
| 4241 | sum += *data++;
|
---|
| 4242 | count -=2;
|
---|
| 4243 | }
|
---|
| 4244 |
|
---|
| 4245 | /* get left-over, if any */
|
---|
| 4246 | packet = (byte*)data;
|
---|
| 4247 | if (count > 0) {
|
---|
| 4248 | sum += *packet;
|
---|
| 4249 | }
|
---|
| 4250 |
|
---|
| 4251 | /* fold 32bit sum into 16 bits */
|
---|
| 4252 | while (sum >> 16)
|
---|
| 4253 | sum = (sum & 0xffff) + (sum >> 16);
|
---|
| 4254 |
|
---|
| 4255 | checksum = (word16)~sum;
|
---|
| 4256 | /* checksum should now equal 0, since included already calcd checksum */
|
---|
| 4257 | /* field, but tcp checksum offloading could negate calculation */
|
---|
| 4258 | if (checksum == 0)
|
---|
| 4259 | return 0;
|
---|
| 4260 | return -1;
|
---|
| 4261 | }
|
---|
| 4262 | #endif
|
---|
| 4263 |
|
---|
| 4264 |
|
---|
| 4265 | /* Check IP and TCP headers, set payload */
|
---|
| 4266 | /* returns 0 on success, -1 on error */
|
---|
| 4267 | static int CheckHeaders(IpInfo* ipInfo, TcpInfo* tcpInfo, const byte* packet,
|
---|
| 4268 | int length, const byte** sslFrame, int* sslBytes, char* error)
|
---|
| 4269 | {
|
---|
[464] | 4270 | IpHdr* iphdr = (IpHdr*)packet;
|
---|
| 4271 | int version;
|
---|
| 4272 |
|
---|
[457] | 4273 | TraceHeader();
|
---|
| 4274 | TracePacket();
|
---|
| 4275 |
|
---|
| 4276 | /* ip header */
|
---|
| 4277 | if (length < IP_HDR_SZ) {
|
---|
| 4278 | SetError(PACKET_HDR_SHORT_STR, error, NULL, 0);
|
---|
| 4279 | return -1;
|
---|
| 4280 | }
|
---|
[464] | 4281 |
|
---|
| 4282 | version = IP_V(iphdr);
|
---|
| 4283 | if (version != IPV6 && version != IPV4) {
|
---|
| 4284 | /* Is this VLAN IEEE 802.1Q Frame? TPID = 0x8100 */
|
---|
| 4285 | if (packet[2] == 0x81 && packet[3] == 0x00) {
|
---|
| 4286 | /* trim VLAN header and try again */
|
---|
| 4287 | packet += 8;
|
---|
| 4288 | length -= 8;
|
---|
| 4289 | }
|
---|
| 4290 | }
|
---|
| 4291 |
|
---|
[457] | 4292 | if (CheckIpHdr((IpHdr*)packet, ipInfo, length, error) != 0)
|
---|
| 4293 | return -1;
|
---|
| 4294 |
|
---|
| 4295 | /* tcp header */
|
---|
| 4296 | if (length < (ipInfo->length + TCP_HDR_SZ)) {
|
---|
| 4297 | SetError(PACKET_HDR_SHORT_STR, error, NULL, 0);
|
---|
| 4298 | return -1;
|
---|
| 4299 | }
|
---|
| 4300 | if (CheckTcpHdr((TcpHdr*)(packet + ipInfo->length), tcpInfo, error) != 0)
|
---|
| 4301 | return -1;
|
---|
| 4302 |
|
---|
| 4303 | /* setup */
|
---|
| 4304 | *sslFrame = packet + ipInfo->length + tcpInfo->length;
|
---|
| 4305 | if (*sslFrame > packet + length) {
|
---|
| 4306 | SetError(PACKET_HDR_SHORT_STR, error, NULL, 0);
|
---|
| 4307 | return -1;
|
---|
| 4308 | }
|
---|
[464] | 4309 |
|
---|
[457] | 4310 | /* We only care about the data in the TCP/IP record. There may be extra
|
---|
| 4311 | * data after the IP record for the FCS for Ethernet. */
|
---|
| 4312 | *sslBytes = (int)(packet + ipInfo->total - *sslFrame);
|
---|
| 4313 |
|
---|
| 4314 | return 0;
|
---|
| 4315 | }
|
---|
| 4316 |
|
---|
| 4317 |
|
---|
| 4318 | /* Create or Find existing session */
|
---|
| 4319 | /* returns 0 on success (continue), -1 on error, 1 on success (end) */
|
---|
| 4320 | static int CheckSession(IpInfo* ipInfo, TcpInfo* tcpInfo, int sslBytes,
|
---|
| 4321 | SnifferSession** session, char* error)
|
---|
| 4322 | {
|
---|
| 4323 | /* create a new SnifferSession on client SYN */
|
---|
| 4324 | if (tcpInfo->syn && !tcpInfo->ack) {
|
---|
| 4325 | TraceClientSyn(tcpInfo->sequence);
|
---|
| 4326 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 4327 | INC_STAT(SnifferStats.sslEncryptedConns);
|
---|
| 4328 | #endif
|
---|
| 4329 | *session = CreateSession(ipInfo, tcpInfo, error);
|
---|
| 4330 | if (*session == NULL) {
|
---|
| 4331 | *session = GetSnifferSession(ipInfo, tcpInfo);
|
---|
| 4332 | /* already had existing, so OK */
|
---|
| 4333 | if (*session)
|
---|
| 4334 | return 1;
|
---|
| 4335 |
|
---|
| 4336 | SetError(MEMORY_STR, error, NULL, 0);
|
---|
| 4337 | return -1;
|
---|
| 4338 | }
|
---|
| 4339 | return 1;
|
---|
| 4340 | }
|
---|
| 4341 | /* get existing sniffer session */
|
---|
| 4342 | else {
|
---|
| 4343 | *session = GetSnifferSession(ipInfo, tcpInfo);
|
---|
| 4344 | if (*session == NULL) {
|
---|
| 4345 | /* don't worry about extraneous RST or duplicate FINs */
|
---|
| 4346 | if (tcpInfo->fin || tcpInfo->rst)
|
---|
| 4347 | return 1;
|
---|
| 4348 | /* don't worry about duplicate ACKs either */
|
---|
| 4349 | if (sslBytes == 0 && tcpInfo->ack)
|
---|
| 4350 | return 1;
|
---|
| 4351 |
|
---|
| 4352 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 4353 | LOCK_STAT();
|
---|
| 4354 | NOLOCK_INC_STAT(SnifferStats.sslDecryptedPackets);
|
---|
| 4355 | NOLOCK_ADD_TO_STAT(SnifferStats.sslDecryptedBytes, sslBytes);
|
---|
| 4356 | UNLOCK_STAT();
|
---|
| 4357 | #endif
|
---|
| 4358 |
|
---|
| 4359 | SetError(BAD_SESSION_STR, error, NULL, 0);
|
---|
| 4360 | return -1;
|
---|
| 4361 | }
|
---|
| 4362 | }
|
---|
| 4363 | return 0;
|
---|
| 4364 | }
|
---|
| 4365 |
|
---|
| 4366 |
|
---|
| 4367 | /* Create a Packet Buffer from *begin - end, adjust new *begin and bytesLeft */
|
---|
| 4368 | static PacketBuffer* CreateBuffer(word32* begin, word32 end, const byte* data,
|
---|
| 4369 | int* bytesLeft)
|
---|
| 4370 | {
|
---|
| 4371 | PacketBuffer* pb;
|
---|
| 4372 |
|
---|
| 4373 | int added = end - *begin + 1;
|
---|
| 4374 | assert(*begin <= end);
|
---|
| 4375 |
|
---|
| 4376 | pb = (PacketBuffer*)XMALLOC(sizeof(PacketBuffer),
|
---|
| 4377 | NULL, DYNAMIC_TYPE_SNIFFER_PB);
|
---|
| 4378 | if (pb == NULL) return NULL;
|
---|
| 4379 |
|
---|
| 4380 | pb->next = 0;
|
---|
| 4381 | pb->begin = *begin;
|
---|
| 4382 | pb->end = end;
|
---|
| 4383 | pb->data = (byte*)XMALLOC(added, NULL, DYNAMIC_TYPE_SNIFFER_PB_BUFFER);
|
---|
| 4384 |
|
---|
| 4385 | if (pb->data == NULL) {
|
---|
| 4386 | XFREE(pb, NULL, DYNAMIC_TYPE_SNIFFER_PB);
|
---|
| 4387 | return NULL;
|
---|
| 4388 | }
|
---|
| 4389 | XMEMCPY(pb->data, data, added);
|
---|
| 4390 |
|
---|
| 4391 | *bytesLeft -= added;
|
---|
| 4392 | *begin = pb->end + 1;
|
---|
| 4393 |
|
---|
| 4394 | return pb;
|
---|
| 4395 | }
|
---|
| 4396 |
|
---|
| 4397 |
|
---|
| 4398 | /* Add sslFrame to Reassembly List */
|
---|
| 4399 | /* returns 1 (end) on success, -1, on error */
|
---|
| 4400 | static int AddToReassembly(byte from, word32 seq, const byte* sslFrame,
|
---|
| 4401 | int sslBytes, SnifferSession* session, char* error)
|
---|
| 4402 | {
|
---|
| 4403 | PacketBuffer* add;
|
---|
| 4404 | PacketBuffer** front = (from == WOLFSSL_SERVER_END) ?
|
---|
| 4405 | &session->cliReassemblyList: &session->srvReassemblyList;
|
---|
| 4406 | PacketBuffer* curr = *front;
|
---|
| 4407 | PacketBuffer* prev = curr;
|
---|
| 4408 |
|
---|
| 4409 | word32* reassemblyMemory = (from == WOLFSSL_SERVER_END) ?
|
---|
| 4410 | &session->cliReassemblyMemory : &session->srvReassemblyMemory;
|
---|
| 4411 | word32 startSeq = seq;
|
---|
| 4412 | word32 added;
|
---|
| 4413 | int bytesLeft = sslBytes; /* could be overlapping fragment */
|
---|
| 4414 |
|
---|
| 4415 | /* if list is empty add full frame to front */
|
---|
| 4416 | if (!curr) {
|
---|
| 4417 | if (MaxRecoveryMemory != -1 &&
|
---|
| 4418 | (int)(*reassemblyMemory + sslBytes) > MaxRecoveryMemory) {
|
---|
| 4419 | SetError(REASSEMBLY_MAX_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 4420 | return -1;
|
---|
| 4421 | }
|
---|
| 4422 | add = CreateBuffer(&seq, seq + sslBytes - 1, sslFrame, &bytesLeft);
|
---|
| 4423 | if (add == NULL) {
|
---|
| 4424 | SetError(MEMORY_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 4425 | return -1;
|
---|
| 4426 | }
|
---|
| 4427 | *front = add;
|
---|
| 4428 | *reassemblyMemory += sslBytes;
|
---|
| 4429 | return 1;
|
---|
| 4430 | }
|
---|
| 4431 |
|
---|
| 4432 | /* add to front if before current front, up to next->begin */
|
---|
| 4433 | if (seq < curr->begin) {
|
---|
| 4434 | word32 end = seq + sslBytes - 1;
|
---|
| 4435 |
|
---|
| 4436 | if (end >= curr->begin)
|
---|
| 4437 | end = curr->begin - 1;
|
---|
| 4438 |
|
---|
| 4439 | if (MaxRecoveryMemory -1 &&
|
---|
| 4440 | (int)(*reassemblyMemory + sslBytes) > MaxRecoveryMemory) {
|
---|
| 4441 | SetError(REASSEMBLY_MAX_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 4442 | return -1;
|
---|
| 4443 | }
|
---|
| 4444 | add = CreateBuffer(&seq, end, sslFrame, &bytesLeft);
|
---|
| 4445 | if (add == NULL) {
|
---|
| 4446 | SetError(MEMORY_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 4447 | return -1;
|
---|
| 4448 | }
|
---|
| 4449 | add->next = curr;
|
---|
| 4450 | *front = add;
|
---|
| 4451 | *reassemblyMemory += sslBytes;
|
---|
| 4452 | }
|
---|
| 4453 |
|
---|
| 4454 | /* while we have bytes left, try to find a gap to fill */
|
---|
| 4455 | while (bytesLeft > 0) {
|
---|
| 4456 | /* get previous packet in list */
|
---|
| 4457 | while (curr && (seq >= curr->begin)) {
|
---|
| 4458 | prev = curr;
|
---|
| 4459 | curr = curr->next;
|
---|
| 4460 | }
|
---|
| 4461 |
|
---|
| 4462 | /* don't add duplicate data */
|
---|
| 4463 | if (prev->end >= seq) {
|
---|
| 4464 | if ( (seq + bytesLeft - 1) <= prev->end)
|
---|
| 4465 | return 1;
|
---|
| 4466 | seq = prev->end + 1;
|
---|
| 4467 | bytesLeft = startSeq + sslBytes - seq;
|
---|
| 4468 | }
|
---|
| 4469 |
|
---|
| 4470 | if (!curr)
|
---|
| 4471 | /* we're at the end */
|
---|
| 4472 | added = bytesLeft;
|
---|
| 4473 | else
|
---|
| 4474 | /* we're in between two frames */
|
---|
| 4475 | added = min((word32)bytesLeft, curr->begin - seq);
|
---|
| 4476 |
|
---|
| 4477 | /* data already there */
|
---|
| 4478 | if (added == 0)
|
---|
| 4479 | continue;
|
---|
| 4480 |
|
---|
| 4481 | if (MaxRecoveryMemory != -1 &&
|
---|
| 4482 | (int)(*reassemblyMemory + added) > MaxRecoveryMemory) {
|
---|
| 4483 | SetError(REASSEMBLY_MAX_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 4484 | return -1;
|
---|
| 4485 | }
|
---|
| 4486 | add = CreateBuffer(&seq, seq + added - 1, &sslFrame[seq - startSeq],
|
---|
| 4487 | &bytesLeft);
|
---|
| 4488 | if (add == NULL) {
|
---|
| 4489 | SetError(MEMORY_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 4490 | return -1;
|
---|
| 4491 | }
|
---|
| 4492 | add->next = prev->next;
|
---|
| 4493 | prev->next = add;
|
---|
| 4494 | *reassemblyMemory += added;
|
---|
| 4495 | }
|
---|
| 4496 | return 1;
|
---|
| 4497 | }
|
---|
| 4498 |
|
---|
| 4499 |
|
---|
| 4500 | /* Add out of order FIN capture */
|
---|
| 4501 | /* returns 1 for success (end) */
|
---|
| 4502 | static int AddFinCapture(SnifferSession* session, word32 sequence)
|
---|
| 4503 | {
|
---|
| 4504 | if (session->flags.side == WOLFSSL_SERVER_END) {
|
---|
[464] | 4505 | if (session->finCapture.cliCounted == 0)
|
---|
| 4506 | session->finCapture.cliFinSeq = sequence;
|
---|
[457] | 4507 | }
|
---|
| 4508 | else {
|
---|
[464] | 4509 | if (session->finCapture.srvCounted == 0)
|
---|
| 4510 | session->finCapture.srvFinSeq = sequence;
|
---|
[457] | 4511 | }
|
---|
| 4512 | return 1;
|
---|
| 4513 | }
|
---|
| 4514 |
|
---|
| 4515 |
|
---|
| 4516 | /* Adjust incoming sequence based on side */
|
---|
| 4517 | /* returns 0 on success (continue), -1 on error, 1 on success (end) */
|
---|
| 4518 | static int AdjustSequence(TcpInfo* tcpInfo, SnifferSession* session,
|
---|
| 4519 | int* sslBytes, const byte** sslFrame, char* error)
|
---|
| 4520 | {
|
---|
| 4521 | word32 seqStart = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
| 4522 | session->cliSeqStart :session->srvSeqStart;
|
---|
| 4523 | word32 real = tcpInfo->sequence - seqStart;
|
---|
| 4524 | word32* expected = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
| 4525 | &session->cliExpected : &session->srvExpected;
|
---|
| 4526 | PacketBuffer* reassemblyList = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
| 4527 | session->cliReassemblyList : session->srvReassemblyList;
|
---|
| 4528 | byte skipPartial = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
| 4529 | session->flags.srvSkipPartial :
|
---|
| 4530 | session->flags.cliSkipPartial;
|
---|
| 4531 |
|
---|
| 4532 | /* handle rollover of sequence */
|
---|
| 4533 | if (tcpInfo->sequence < seqStart)
|
---|
| 4534 | real = 0xffffffffU - seqStart + tcpInfo->sequence;
|
---|
| 4535 |
|
---|
| 4536 | TraceRelativeSequence(*expected, real);
|
---|
| 4537 |
|
---|
| 4538 | if (real < *expected) {
|
---|
| 4539 | Trace(DUPLICATE_STR);
|
---|
| 4540 | if (real + *sslBytes > *expected) {
|
---|
| 4541 | int overlap = *expected - real;
|
---|
| 4542 | Trace(OVERLAP_DUPLICATE_STR);
|
---|
| 4543 |
|
---|
| 4544 | /* adjust to expected, remove duplicate */
|
---|
| 4545 | *sslFrame += overlap;
|
---|
| 4546 | *sslBytes -= overlap;
|
---|
| 4547 |
|
---|
| 4548 | /* The following conditional block is duplicated below. It is the
|
---|
| 4549 | * same action but for a different setup case. If changing this
|
---|
| 4550 | * block be sure to also update the block below. */
|
---|
| 4551 | if (reassemblyList) {
|
---|
| 4552 | word32 newEnd = *expected + *sslBytes;
|
---|
| 4553 |
|
---|
| 4554 | if (newEnd > reassemblyList->begin) {
|
---|
| 4555 | Trace(OVERLAP_REASSEMBLY_BEGIN_STR);
|
---|
| 4556 |
|
---|
| 4557 | /* remove bytes already on reassembly list */
|
---|
| 4558 | *sslBytes -= newEnd - reassemblyList->begin;
|
---|
| 4559 | }
|
---|
| 4560 | if (newEnd > reassemblyList->end) {
|
---|
| 4561 | Trace(OVERLAP_REASSEMBLY_END_STR);
|
---|
| 4562 |
|
---|
| 4563 | /* may be past reassembly list end (could have more on list)
|
---|
| 4564 | so try to add what's past the front->end */
|
---|
| 4565 | AddToReassembly(session->flags.side, reassemblyList->end +1,
|
---|
| 4566 | *sslFrame + reassemblyList->end - *expected + 1,
|
---|
| 4567 | newEnd - reassemblyList->end, session, error);
|
---|
| 4568 | }
|
---|
| 4569 | }
|
---|
| 4570 | }
|
---|
| 4571 | else
|
---|
| 4572 | return 1;
|
---|
| 4573 | }
|
---|
| 4574 | else if (real > *expected) {
|
---|
| 4575 | Trace(OUT_OF_ORDER_STR);
|
---|
| 4576 | if (*sslBytes > 0) {
|
---|
| 4577 | int addResult = AddToReassembly(session->flags.side, real,
|
---|
| 4578 | *sslFrame, *sslBytes, session, error);
|
---|
| 4579 | if (skipPartial) {
|
---|
| 4580 | *sslBytes = 0;
|
---|
| 4581 | return 0;
|
---|
| 4582 | }
|
---|
| 4583 | else
|
---|
| 4584 | return addResult;
|
---|
| 4585 | }
|
---|
| 4586 | else if (tcpInfo->fin)
|
---|
| 4587 | return AddFinCapture(session, real);
|
---|
| 4588 | }
|
---|
| 4589 | else if (*sslBytes > 0) {
|
---|
| 4590 | if (skipPartial) {
|
---|
| 4591 | AddToReassembly(session->flags.side, real,
|
---|
| 4592 | *sslFrame, *sslBytes, session, error);
|
---|
| 4593 | *expected += *sslBytes;
|
---|
| 4594 | *sslBytes = 0;
|
---|
| 4595 | if (tcpInfo->fin)
|
---|
| 4596 | *expected += 1;
|
---|
| 4597 | return 0;
|
---|
| 4598 | }
|
---|
| 4599 | /* The following conditional block is duplicated above. It is the
|
---|
| 4600 | * same action but for a different setup case. If changing this
|
---|
| 4601 | * block be sure to also update the block above. */
|
---|
| 4602 | else if (reassemblyList) {
|
---|
| 4603 | word32 newEnd = *expected + *sslBytes;
|
---|
| 4604 |
|
---|
| 4605 | if (newEnd > reassemblyList->begin) {
|
---|
| 4606 | Trace(OVERLAP_REASSEMBLY_BEGIN_STR);
|
---|
| 4607 |
|
---|
| 4608 | /* remove bytes already on reassembly list */
|
---|
| 4609 | *sslBytes -= newEnd - reassemblyList->begin;
|
---|
| 4610 | }
|
---|
| 4611 | if (newEnd > reassemblyList->end) {
|
---|
| 4612 | Trace(OVERLAP_REASSEMBLY_END_STR);
|
---|
| 4613 |
|
---|
| 4614 | /* may be past reassembly list end (could have more on list)
|
---|
| 4615 | so try to add what's past the front->end */
|
---|
| 4616 | AddToReassembly(session->flags.side, reassemblyList->end +1,
|
---|
| 4617 | *sslFrame + reassemblyList->end - *expected + 1,
|
---|
| 4618 | newEnd - reassemblyList->end, session, error);
|
---|
| 4619 | }
|
---|
| 4620 | }
|
---|
| 4621 | }
|
---|
| 4622 | /* got expected sequence */
|
---|
| 4623 | *expected += *sslBytes;
|
---|
| 4624 | if (tcpInfo->fin)
|
---|
| 4625 | *expected += 1;
|
---|
| 4626 |
|
---|
| 4627 | return 0;
|
---|
| 4628 | }
|
---|
| 4629 |
|
---|
| 4630 |
|
---|
| 4631 | static int FindNextRecordInAssembly(SnifferSession* session,
|
---|
| 4632 | const byte** sslFrame, int* sslBytes,
|
---|
| 4633 | const byte** end, char* error)
|
---|
| 4634 | {
|
---|
| 4635 | PacketBuffer** front = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
| 4636 | &session->cliReassemblyList :
|
---|
| 4637 | &session->srvReassemblyList;
|
---|
| 4638 | PacketBuffer* curr = *front;
|
---|
| 4639 | PacketBuffer* prev = NULL;
|
---|
| 4640 | byte* skipPartial = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
| 4641 | &session->flags.srvSkipPartial :
|
---|
| 4642 | &session->flags.cliSkipPartial;
|
---|
| 4643 | word32* reassemblyMemory = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
| 4644 | &session->cliReassemblyMemory :
|
---|
| 4645 | &session->srvReassemblyMemory;
|
---|
[464] | 4646 | WOLFSSL* ssl = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
[457] | 4647 | session->sslServer :
|
---|
| 4648 | session->sslClient;
|
---|
| 4649 | ProtocolVersion pv = ssl->version;
|
---|
| 4650 | word32* expected = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
| 4651 | &session->cliExpected :
|
---|
| 4652 | &session->srvExpected;
|
---|
| 4653 |
|
---|
| 4654 | while (curr != NULL) {
|
---|
| 4655 | *expected = curr->end + 1;
|
---|
| 4656 |
|
---|
| 4657 | if (curr->data[0] == application_data &&
|
---|
| 4658 | curr->data[1] == pv.major &&
|
---|
| 4659 | curr->data[2] == pv.minor) {
|
---|
| 4660 |
|
---|
| 4661 | if (ssl->buffers.inputBuffer.length > 0)
|
---|
| 4662 | Trace(DROPPING_PARTIAL_RECORD);
|
---|
| 4663 |
|
---|
| 4664 | *sslBytes = curr->end - curr->begin + 1;
|
---|
| 4665 | if ( (word32)*sslBytes > ssl->buffers.inputBuffer.bufferSize) {
|
---|
| 4666 | if (GrowInputBuffer(ssl, *sslBytes, 0) < 0) {
|
---|
| 4667 | SetError(MEMORY_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 4668 | return -1;
|
---|
| 4669 | }
|
---|
| 4670 | }
|
---|
| 4671 |
|
---|
| 4672 | XMEMCPY(ssl->buffers.inputBuffer.buffer, curr->data, *sslBytes);
|
---|
| 4673 |
|
---|
| 4674 | *front = curr->next;
|
---|
| 4675 | *reassemblyMemory -= *sslBytes;
|
---|
| 4676 | FreePacketBuffer(curr);
|
---|
| 4677 |
|
---|
| 4678 | ssl->buffers.inputBuffer.length = *sslBytes;
|
---|
| 4679 | *sslFrame = ssl->buffers.inputBuffer.buffer;
|
---|
| 4680 | *end = *sslFrame + *sslBytes;
|
---|
| 4681 | *skipPartial = 0;
|
---|
| 4682 |
|
---|
| 4683 | return 0;
|
---|
| 4684 | }
|
---|
| 4685 | else if (ssl->specs.cipher_type == block) {
|
---|
| 4686 | if (ssl->specs.bulk_cipher_algorithm == wolfssl_aes) {
|
---|
| 4687 | #ifdef BUILD_AES
|
---|
| 4688 | wc_AesSetIV(ssl->decrypt.aes,
|
---|
| 4689 | curr->data + curr->end - curr->begin
|
---|
| 4690 | - ssl->specs.block_size + 1);
|
---|
| 4691 | #endif
|
---|
| 4692 | }
|
---|
| 4693 | else if (ssl->specs.bulk_cipher_algorithm == wolfssl_triple_des) {
|
---|
| 4694 | #ifdef BUILD_DES3
|
---|
| 4695 | wc_Des3_SetIV(ssl->decrypt.des3,
|
---|
| 4696 | curr->data + curr->end - curr->begin
|
---|
| 4697 | - ssl->specs.block_size + 1);
|
---|
| 4698 | #endif
|
---|
| 4699 | }
|
---|
| 4700 | }
|
---|
| 4701 |
|
---|
| 4702 | Trace(DROPPING_LOST_FRAG_STR);
|
---|
| 4703 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 4704 | INC_STAT(SnifferStats.sslDecodeFails);
|
---|
| 4705 | #endif
|
---|
| 4706 | prev = curr;
|
---|
| 4707 | curr = curr->next;
|
---|
| 4708 | *reassemblyMemory -= (prev->end - prev->begin + 1);
|
---|
| 4709 | FreePacketBuffer(prev);
|
---|
| 4710 | }
|
---|
| 4711 |
|
---|
| 4712 | *front = curr;
|
---|
| 4713 |
|
---|
| 4714 | return 0;
|
---|
| 4715 | }
|
---|
| 4716 |
|
---|
| 4717 |
|
---|
| 4718 | static int FixSequence(TcpInfo* tcpInfo, SnifferSession* session)
|
---|
| 4719 | {
|
---|
| 4720 | word32* expected = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
| 4721 | &session->srvExpected : &session->cliExpected;
|
---|
[464] | 4722 | word32 seqStart = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
| 4723 | session->srvSeqStart : session->cliSeqStart;
|
---|
[457] | 4724 | PacketBuffer* list = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
| 4725 | session->srvReassemblyList :
|
---|
| 4726 | session->cliReassemblyList;
|
---|
| 4727 | byte* skipPartial = (session->flags.side != WOLFSSL_SERVER_END) ?
|
---|
| 4728 | &session->flags.srvSkipPartial :
|
---|
| 4729 | &session->flags.cliSkipPartial;
|
---|
| 4730 |
|
---|
[464] | 4731 | if (tcpInfo->ackNumber < seqStart) {
|
---|
| 4732 | return -1; /* do not fix sequence - could be ack on unseen seq */
|
---|
| 4733 | }
|
---|
[457] | 4734 | *skipPartial = 1;
|
---|
[464] | 4735 |
|
---|
[457] | 4736 | if (list != NULL)
|
---|
| 4737 | *expected = list->begin;
|
---|
[464] | 4738 | else
|
---|
| 4739 | *expected = tcpInfo->ackNumber - seqStart;
|
---|
[457] | 4740 |
|
---|
| 4741 |
|
---|
| 4742 | return 1;
|
---|
| 4743 | }
|
---|
| 4744 |
|
---|
| 4745 |
|
---|
| 4746 | /* Check latest ack number for missing packets
|
---|
| 4747 | return 0 ok, <0 on error */
|
---|
| 4748 | static int CheckAck(TcpInfo* tcpInfo, SnifferSession* session)
|
---|
| 4749 | {
|
---|
| 4750 | if (tcpInfo->ack) {
|
---|
| 4751 | word32 seqStart = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
| 4752 | session->srvSeqStart :session->cliSeqStart;
|
---|
| 4753 | word32 real = tcpInfo->ackNumber - seqStart;
|
---|
| 4754 | word32 expected = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
| 4755 | session->srvExpected : session->cliExpected;
|
---|
| 4756 |
|
---|
| 4757 | /* handle rollover of sequence */
|
---|
| 4758 | if (tcpInfo->ackNumber < seqStart)
|
---|
| 4759 | real = 0xffffffffU - seqStart + tcpInfo->ackNumber;
|
---|
| 4760 |
|
---|
| 4761 | TraceAck(real, expected);
|
---|
| 4762 |
|
---|
| 4763 | if (real > expected)
|
---|
| 4764 | return -1; /* we missed a packet, ACKing data we never saw */
|
---|
| 4765 | }
|
---|
| 4766 | return 0;
|
---|
| 4767 | }
|
---|
| 4768 |
|
---|
| 4769 |
|
---|
| 4770 | /* Check TCP Sequence status */
|
---|
| 4771 | /* returns 0 on success (continue), -1 on error, 1 on success (end) */
|
---|
| 4772 | static int CheckSequence(IpInfo* ipInfo, TcpInfo* tcpInfo,
|
---|
| 4773 | SnifferSession* session, int* sslBytes,
|
---|
| 4774 | const byte** sslFrame, char* error)
|
---|
| 4775 | {
|
---|
| 4776 | int actualLen;
|
---|
| 4777 | byte* ackFault = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
| 4778 | &session->flags.cliAckFault :
|
---|
| 4779 | &session->flags.srvAckFault;
|
---|
| 4780 |
|
---|
[464] | 4781 | /* init SEQ from server to client - if not ack fault */
|
---|
| 4782 | if (tcpInfo->syn && tcpInfo->ack && !*ackFault) {
|
---|
[457] | 4783 | session->srvSeqStart = tcpInfo->sequence;
|
---|
| 4784 | session->srvExpected = 1;
|
---|
| 4785 | TraceServerSyn(tcpInfo->sequence);
|
---|
| 4786 | return 1;
|
---|
| 4787 | }
|
---|
| 4788 |
|
---|
| 4789 | /* adjust potential ethernet trailer */
|
---|
| 4790 | actualLen = ipInfo->total - ipInfo->length - tcpInfo->length;
|
---|
| 4791 | if (*sslBytes > actualLen) {
|
---|
| 4792 | *sslBytes = actualLen;
|
---|
| 4793 | }
|
---|
| 4794 |
|
---|
| 4795 | TraceSequence(tcpInfo->sequence, *sslBytes);
|
---|
| 4796 | if (CheckAck(tcpInfo, session) < 0) {
|
---|
| 4797 | if (!RecoveryEnabled) {
|
---|
| 4798 | UpdateMissedDataSessions();
|
---|
| 4799 | SetError(ACK_MISSED_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 4800 | return -1;
|
---|
| 4801 | }
|
---|
| 4802 | else {
|
---|
| 4803 | SetError(ACK_MISSED_STR, error, session, 0);
|
---|
| 4804 | if (*ackFault == 0) {
|
---|
| 4805 | *ackFault = 1;
|
---|
| 4806 | UpdateMissedDataSessions();
|
---|
| 4807 | }
|
---|
| 4808 | return FixSequence(tcpInfo, session);
|
---|
| 4809 | }
|
---|
| 4810 | }
|
---|
| 4811 |
|
---|
| 4812 | if (*ackFault) {
|
---|
| 4813 | Trace(CLEAR_ACK_FAULT);
|
---|
| 4814 | *ackFault = 0;
|
---|
| 4815 | }
|
---|
| 4816 |
|
---|
| 4817 | return AdjustSequence(tcpInfo, session, sslBytes, sslFrame, error);
|
---|
| 4818 | }
|
---|
| 4819 |
|
---|
| 4820 |
|
---|
| 4821 | /* Check Status before record processing */
|
---|
| 4822 | /* returns 0 on success (continue), -1 on error, 1 on success (end) */
|
---|
| 4823 | static int CheckPreRecord(IpInfo* ipInfo, TcpInfo* tcpInfo,
|
---|
| 4824 | const byte** sslFrame, SnifferSession** session,
|
---|
| 4825 | int* sslBytes, const byte** end,
|
---|
| 4826 | void* vChain, word32 chainSz, char* error)
|
---|
| 4827 | {
|
---|
| 4828 | word32 length;
|
---|
[464] | 4829 | WOLFSSL* ssl = ((*session)->flags.side == WOLFSSL_SERVER_END) ?
|
---|
[457] | 4830 | (*session)->sslServer : (*session)->sslClient;
|
---|
| 4831 | byte skipPartial = ((*session)->flags.side == WOLFSSL_SERVER_END) ?
|
---|
| 4832 | (*session)->flags.srvSkipPartial :
|
---|
| 4833 | (*session)->flags.cliSkipPartial;
|
---|
| 4834 | /* remove SnifferSession on 2nd FIN or RST */
|
---|
| 4835 | if (tcpInfo->fin || tcpInfo->rst) {
|
---|
| 4836 | /* flag FIN and RST */
|
---|
| 4837 | if (tcpInfo->fin)
|
---|
| 4838 | (*session)->flags.finCount += 1;
|
---|
| 4839 | else if (tcpInfo->rst)
|
---|
| 4840 | (*session)->flags.finCount += 2;
|
---|
| 4841 |
|
---|
| 4842 | if ((*session)->flags.finCount >= 2) {
|
---|
| 4843 | RemoveSession(*session, ipInfo, tcpInfo, 0);
|
---|
| 4844 | *session = NULL;
|
---|
| 4845 | return 1;
|
---|
| 4846 | }
|
---|
| 4847 | }
|
---|
| 4848 |
|
---|
| 4849 | if ((*session)->flags.fatalError == FATAL_ERROR_STATE) {
|
---|
| 4850 | SetError(FATAL_ERROR_STR, error, NULL, 0);
|
---|
| 4851 | return -1;
|
---|
| 4852 | }
|
---|
| 4853 |
|
---|
| 4854 | if (skipPartial) {
|
---|
| 4855 | if (FindNextRecordInAssembly(*session,
|
---|
| 4856 | sslFrame, sslBytes, end, error) < 0) {
|
---|
| 4857 | return -1;
|
---|
| 4858 | }
|
---|
| 4859 | }
|
---|
| 4860 |
|
---|
| 4861 | if (*sslBytes == 0) {
|
---|
| 4862 | Trace(NO_DATA_STR);
|
---|
| 4863 | return 1;
|
---|
| 4864 | }
|
---|
| 4865 |
|
---|
| 4866 | /* if current partial data, add to end of partial */
|
---|
| 4867 | /* if skipping, the data is already at the end of partial */
|
---|
| 4868 | if ( !skipPartial && (length = ssl->buffers.inputBuffer.length) ) {
|
---|
| 4869 | Trace(PARTIAL_ADD_STR);
|
---|
| 4870 |
|
---|
| 4871 | if ( (*sslBytes + length) > ssl->buffers.inputBuffer.bufferSize) {
|
---|
| 4872 | if (GrowInputBuffer(ssl, *sslBytes, length) < 0) {
|
---|
| 4873 | SetError(MEMORY_STR, error, *session, FATAL_ERROR_STATE);
|
---|
| 4874 | return -1;
|
---|
| 4875 | }
|
---|
| 4876 | }
|
---|
| 4877 | if (vChain == NULL) {
|
---|
| 4878 | XMEMCPY(&ssl->buffers.inputBuffer.buffer[length],
|
---|
| 4879 | *sslFrame, *sslBytes);
|
---|
| 4880 | *sslBytes += length;
|
---|
| 4881 | ssl->buffers.inputBuffer.length = *sslBytes;
|
---|
| 4882 | *sslFrame = ssl->buffers.inputBuffer.buffer;
|
---|
| 4883 | *end = *sslFrame + *sslBytes;
|
---|
| 4884 | }
|
---|
| 4885 | }
|
---|
| 4886 |
|
---|
| 4887 | if (vChain != NULL) {
|
---|
| 4888 | #ifdef WOLFSSL_SNIFFER_CHAIN_INPUT
|
---|
| 4889 | struct iovec* chain = (struct iovec*)vChain;
|
---|
| 4890 | word32 i, offset, headerSz, qty, remainder;
|
---|
| 4891 |
|
---|
| 4892 | Trace(CHAIN_INPUT_STR);
|
---|
[464] | 4893 | headerSz = (word32)((const byte*)*sslFrame - (const byte*)chain[0].iov_base);
|
---|
[457] | 4894 | remainder = *sslBytes;
|
---|
| 4895 |
|
---|
| 4896 | if ( (*sslBytes + length) > ssl->buffers.inputBuffer.bufferSize) {
|
---|
| 4897 | if (GrowInputBuffer(ssl, *sslBytes, length) < 0) {
|
---|
| 4898 | SetError(MEMORY_STR, error, *session, FATAL_ERROR_STATE);
|
---|
| 4899 | return -1;
|
---|
| 4900 | }
|
---|
| 4901 | }
|
---|
| 4902 |
|
---|
| 4903 | qty = min(*sslBytes, (word32)chain[0].iov_len - headerSz);
|
---|
| 4904 | XMEMCPY(&ssl->buffers.inputBuffer.buffer[length],
|
---|
| 4905 | (byte*)chain[0].iov_base + headerSz, qty);
|
---|
| 4906 | offset = length;
|
---|
| 4907 | for (i = 1; i < chainSz; i++) {
|
---|
| 4908 | offset += qty;
|
---|
| 4909 | remainder -= qty;
|
---|
| 4910 |
|
---|
| 4911 | if (chain[i].iov_len > remainder)
|
---|
| 4912 | qty = remainder;
|
---|
| 4913 | else
|
---|
| 4914 | qty = (word32)chain[i].iov_len;
|
---|
| 4915 | XMEMCPY(ssl->buffers.inputBuffer.buffer + offset,
|
---|
| 4916 | chain[i].iov_base, qty);
|
---|
| 4917 | }
|
---|
| 4918 |
|
---|
| 4919 | *sslBytes += length;
|
---|
| 4920 | ssl->buffers.inputBuffer.length = *sslBytes;
|
---|
| 4921 | *sslFrame = ssl->buffers.inputBuffer.buffer;
|
---|
| 4922 | *end = *sslFrame + *sslBytes;
|
---|
| 4923 | #endif
|
---|
| 4924 | (void)chainSz;
|
---|
| 4925 | }
|
---|
| 4926 |
|
---|
| 4927 | if ((*session)->flags.clientHello == 0 && **sslFrame != handshake) {
|
---|
| 4928 | /* Sanity check the packet for an old style client hello. */
|
---|
| 4929 | int rhSize = (((*sslFrame)[0] & 0x7f) << 8) | ((*sslFrame)[1]);
|
---|
| 4930 |
|
---|
| 4931 | if ((rhSize <= (*sslBytes - 2)) &&
|
---|
| 4932 | (*sslFrame)[2] == OLD_HELLO_ID && (*sslFrame)[3] == SSLv3_MAJOR) {
|
---|
| 4933 | #ifdef OLD_HELLO_ALLOWED
|
---|
| 4934 | int ret = DoOldHello(*session, *sslFrame, &rhSize, sslBytes, error);
|
---|
| 4935 | if (ret < 0)
|
---|
| 4936 | return -1; /* error already set */
|
---|
| 4937 | if (*sslBytes <= 0)
|
---|
| 4938 | return 1;
|
---|
| 4939 | #endif
|
---|
| 4940 | }
|
---|
| 4941 | else {
|
---|
| 4942 | #ifdef STARTTLS_ALLOWED
|
---|
| 4943 | if (ssl->buffers.inputBuffer.dynamicFlag) {
|
---|
| 4944 | ssl->buffers.inputBuffer.length = 0;
|
---|
| 4945 | ShrinkInputBuffer(ssl, NO_FORCED_FREE);
|
---|
| 4946 | }
|
---|
| 4947 | return 1;
|
---|
| 4948 | #endif
|
---|
| 4949 | }
|
---|
| 4950 | }
|
---|
| 4951 |
|
---|
| 4952 | return 0;
|
---|
| 4953 | }
|
---|
| 4954 |
|
---|
| 4955 |
|
---|
| 4956 | /* See if input on the reassembly list is ready for consuming */
|
---|
| 4957 | /* returns 1 for TRUE, 0 for FALSE */
|
---|
| 4958 | static int HaveMoreInput(SnifferSession* session, const byte** sslFrame,
|
---|
| 4959 | int* sslBytes, const byte** end, char* error)
|
---|
| 4960 | {
|
---|
| 4961 | /* sequence and reassembly based on from, not to */
|
---|
| 4962 | int moreInput = 0;
|
---|
| 4963 | PacketBuffer** front = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
| 4964 | &session->cliReassemblyList : &session->srvReassemblyList;
|
---|
| 4965 | word32* expected = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
| 4966 | &session->cliExpected : &session->srvExpected;
|
---|
| 4967 | /* buffer is on receiving end */
|
---|
[464] | 4968 | word32* length = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
[457] | 4969 | &session->sslServer->buffers.inputBuffer.length :
|
---|
| 4970 | &session->sslClient->buffers.inputBuffer.length;
|
---|
| 4971 | byte** myBuffer = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
| 4972 | &session->sslServer->buffers.inputBuffer.buffer :
|
---|
| 4973 | &session->sslClient->buffers.inputBuffer.buffer;
|
---|
[464] | 4974 | word32* bufferSize = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
[457] | 4975 | &session->sslServer->buffers.inputBuffer.bufferSize :
|
---|
| 4976 | &session->sslClient->buffers.inputBuffer.bufferSize;
|
---|
[464] | 4977 | WOLFSSL* ssl = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
[457] | 4978 | session->sslServer : session->sslClient;
|
---|
| 4979 | word32* reassemblyMemory = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
| 4980 | &session->cliReassemblyMemory : &session->srvReassemblyMemory;
|
---|
| 4981 |
|
---|
| 4982 | while (*front && ((*front)->begin == *expected) ) {
|
---|
| 4983 | word32 room = *bufferSize - *length;
|
---|
| 4984 | word32 packetLen = (*front)->end - (*front)->begin + 1;
|
---|
| 4985 |
|
---|
| 4986 | if (packetLen > room && *bufferSize < MAX_INPUT_SZ) {
|
---|
| 4987 | if (GrowInputBuffer(ssl, packetLen, *length) < 0) {
|
---|
| 4988 | SetError(MEMORY_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 4989 | return 0;
|
---|
| 4990 | }
|
---|
| 4991 | room = *bufferSize - *length; /* bufferSize is now bigger */
|
---|
| 4992 | }
|
---|
| 4993 |
|
---|
| 4994 | if (packetLen <= room) {
|
---|
| 4995 | PacketBuffer* del = *front;
|
---|
| 4996 | byte* buf = *myBuffer;
|
---|
| 4997 |
|
---|
| 4998 | XMEMCPY(&buf[*length], (*front)->data, packetLen);
|
---|
| 4999 | *length += packetLen;
|
---|
| 5000 | *expected += packetLen;
|
---|
| 5001 |
|
---|
| 5002 | /* remove used packet */
|
---|
| 5003 | *front = (*front)->next;
|
---|
| 5004 |
|
---|
| 5005 | *reassemblyMemory -= packetLen;
|
---|
| 5006 | FreePacketBuffer(del);
|
---|
| 5007 |
|
---|
| 5008 | moreInput = 1;
|
---|
| 5009 | }
|
---|
| 5010 | else
|
---|
| 5011 | break;
|
---|
| 5012 | }
|
---|
| 5013 | if (moreInput) {
|
---|
| 5014 | *sslFrame = *myBuffer;
|
---|
| 5015 | *sslBytes = *length;
|
---|
| 5016 | *end = *myBuffer + *length;
|
---|
| 5017 | }
|
---|
| 5018 | return moreInput;
|
---|
| 5019 | }
|
---|
| 5020 |
|
---|
| 5021 |
|
---|
| 5022 |
|
---|
| 5023 | /* Process Message(s) from sslFrame */
|
---|
| 5024 | /* return Number of bytes on success, 0 for no data yet, and -1 on error */
|
---|
| 5025 | static int ProcessMessage(const byte* sslFrame, SnifferSession* session,
|
---|
| 5026 | int sslBytes, byte** data, const byte* end,
|
---|
| 5027 | void* ctx, char* error)
|
---|
| 5028 | {
|
---|
| 5029 | const byte* sslBegin = sslFrame;
|
---|
| 5030 | const byte* recordEnd; /* end of record indicator */
|
---|
| 5031 | const byte* inRecordEnd; /* indicator from input stream not decrypt */
|
---|
| 5032 | RecordLayerHeader rh;
|
---|
| 5033 | int rhSize = 0;
|
---|
| 5034 | int ret;
|
---|
| 5035 | int errCode = 0;
|
---|
| 5036 | int decoded = 0; /* bytes stored for user in data */
|
---|
| 5037 | int notEnough; /* notEnough bytes yet flag */
|
---|
| 5038 | int decrypted = 0; /* was current msg decrypted */
|
---|
[464] | 5039 | WOLFSSL* ssl = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
| 5040 | session->sslServer : session->sslClient;
|
---|
[457] | 5041 | doMessage:
|
---|
| 5042 | notEnough = 0;
|
---|
| 5043 | if (sslBytes < 0) {
|
---|
| 5044 | SetError(PACKET_HDR_SHORT_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 5045 | return -1;
|
---|
| 5046 | }
|
---|
| 5047 | if (sslBytes >= RECORD_HEADER_SZ) {
|
---|
| 5048 | if (GetRecordHeader(sslFrame, &rh, &rhSize) != 0) {
|
---|
| 5049 | SetError(BAD_RECORD_HDR_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 5050 | return -1;
|
---|
| 5051 | }
|
---|
| 5052 | }
|
---|
| 5053 | else
|
---|
| 5054 | notEnough = 1;
|
---|
| 5055 |
|
---|
| 5056 | if (notEnough || rhSize > (sslBytes - RECORD_HEADER_SZ)) {
|
---|
| 5057 | /* don't have enough input yet to process full SSL record */
|
---|
| 5058 | Trace(PARTIAL_INPUT_STR);
|
---|
| 5059 |
|
---|
| 5060 | /* store partial if not there already or we advanced */
|
---|
| 5061 | if (ssl->buffers.inputBuffer.length == 0 || sslBegin != sslFrame) {
|
---|
| 5062 | if (sslBytes > (int)ssl->buffers.inputBuffer.bufferSize) {
|
---|
| 5063 | if (GrowInputBuffer(ssl, sslBytes, 0) < 0) {
|
---|
| 5064 | SetError(MEMORY_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 5065 | return -1;
|
---|
| 5066 | }
|
---|
| 5067 | }
|
---|
| 5068 | XMEMMOVE(ssl->buffers.inputBuffer.buffer, sslFrame, sslBytes);
|
---|
| 5069 | ssl->buffers.inputBuffer.length = sslBytes;
|
---|
| 5070 | }
|
---|
| 5071 | if (HaveMoreInput(session, &sslFrame, &sslBytes, &end, error))
|
---|
| 5072 | goto doMessage;
|
---|
| 5073 | return decoded;
|
---|
| 5074 | }
|
---|
| 5075 | sslFrame += RECORD_HEADER_SZ;
|
---|
| 5076 | sslBytes -= RECORD_HEADER_SZ;
|
---|
| 5077 | recordEnd = sslFrame + rhSize; /* may have more than one record */
|
---|
| 5078 | inRecordEnd = recordEnd;
|
---|
| 5079 |
|
---|
| 5080 | /* decrypt if needed */
|
---|
| 5081 | if ((session->flags.side == WOLFSSL_SERVER_END &&
|
---|
| 5082 | session->flags.serverCipherOn)
|
---|
| 5083 | || (session->flags.side == WOLFSSL_CLIENT_END &&
|
---|
| 5084 | session->flags.clientCipherOn)) {
|
---|
| 5085 | int ivAdvance = 0; /* TLSv1.1 advance amount */
|
---|
[464] | 5086 |
|
---|
| 5087 | /* change_cipher_spec is not encrypted */
|
---|
| 5088 | if (rh.type == change_cipher_spec) {
|
---|
| 5089 | goto doPart;
|
---|
| 5090 | }
|
---|
[457] | 5091 | if (ssl->decrypt.setup != 1) {
|
---|
| 5092 | SetError(DECRYPT_KEYS_NOT_SETUP, error, session, FATAL_ERROR_STATE);
|
---|
| 5093 | return -1;
|
---|
| 5094 | }
|
---|
| 5095 | if (CheckAvailableSize(ssl, rhSize) < 0) {
|
---|
| 5096 | SetError(MEMORY_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 5097 | return -1;
|
---|
| 5098 | }
|
---|
[464] | 5099 |
|
---|
[457] | 5100 | sslFrame = DecryptMessage(ssl, sslFrame, rhSize,
|
---|
| 5101 | ssl->buffers.outputBuffer.buffer, &errCode,
|
---|
[464] | 5102 | &ivAdvance, &rh);
|
---|
[457] | 5103 | recordEnd = sslFrame - ivAdvance + rhSize; /* sslFrame moved so
|
---|
| 5104 | should recordEnd */
|
---|
| 5105 | decrypted = 1;
|
---|
| 5106 |
|
---|
| 5107 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 5108 | if (errCode != 0) {
|
---|
| 5109 | INC_STAT(SnifferStats.sslKeyFails);
|
---|
| 5110 | }
|
---|
| 5111 | else {
|
---|
| 5112 | LOCK_STAT();
|
---|
| 5113 | NOLOCK_INC_STAT(SnifferStats.sslDecryptedPackets);
|
---|
| 5114 | NOLOCK_ADD_TO_STAT(SnifferStats.sslDecryptedBytes, sslBytes);
|
---|
| 5115 | UNLOCK_STAT();
|
---|
| 5116 | }
|
---|
| 5117 | #endif
|
---|
| 5118 | if (errCode != 0) {
|
---|
| 5119 | SetError(BAD_DECRYPT, error, session, FATAL_ERROR_STATE);
|
---|
| 5120 | return -1;
|
---|
| 5121 | }
|
---|
| 5122 | }
|
---|
| 5123 |
|
---|
| 5124 | doPart:
|
---|
| 5125 |
|
---|
| 5126 | switch ((enum ContentType)rh.type) {
|
---|
| 5127 | case handshake:
|
---|
| 5128 | {
|
---|
| 5129 | int startIdx = sslBytes;
|
---|
| 5130 | int used;
|
---|
| 5131 |
|
---|
| 5132 | Trace(GOT_HANDSHAKE_STR);
|
---|
[464] | 5133 | ret = DoHandShake(sslFrame, &sslBytes, session, error, rhSize);
|
---|
| 5134 | if (ret != 0 || sslBytes > startIdx) {
|
---|
[457] | 5135 | if (session->flags.fatalError == 0)
|
---|
| 5136 | SetError(BAD_HANDSHAKE_STR, error, session,
|
---|
| 5137 | FATAL_ERROR_STATE);
|
---|
| 5138 | return -1;
|
---|
| 5139 | }
|
---|
| 5140 |
|
---|
| 5141 | /* DoHandShake now fully decrements sslBytes to remaining */
|
---|
| 5142 | used = startIdx - sslBytes;
|
---|
| 5143 | sslFrame += used;
|
---|
| 5144 | if (decrypted)
|
---|
| 5145 | sslFrame += ssl->keys.padSz;
|
---|
| 5146 | }
|
---|
| 5147 | break;
|
---|
| 5148 | case change_cipher_spec:
|
---|
[464] | 5149 | if (session->flags.side == WOLFSSL_SERVER_END) {
|
---|
| 5150 | #ifdef WOLFSSL_TLS13
|
---|
| 5151 | if (IsAtLeastTLSv1_3(session->sslServer->version) && session->srvKs.key_len == 0) {
|
---|
| 5152 | session->flags.serverCipherOn = 0;
|
---|
| 5153 | }
|
---|
| 5154 | else
|
---|
| 5155 | #endif
|
---|
| 5156 | {
|
---|
| 5157 | session->flags.serverCipherOn = 1;
|
---|
| 5158 | }
|
---|
| 5159 | }
|
---|
[457] | 5160 | else
|
---|
| 5161 | session->flags.clientCipherOn = 1;
|
---|
| 5162 | Trace(GOT_CHANGE_CIPHER_STR);
|
---|
| 5163 | ssl->options.handShakeState = HANDSHAKE_DONE;
|
---|
| 5164 | ssl->options.handShakeDone = 1;
|
---|
| 5165 |
|
---|
| 5166 | sslFrame += 1;
|
---|
| 5167 | sslBytes -= 1;
|
---|
| 5168 |
|
---|
| 5169 | break;
|
---|
| 5170 | case application_data:
|
---|
| 5171 | Trace(GOT_APP_DATA_STR);
|
---|
| 5172 | {
|
---|
| 5173 | word32 inOutIdx = 0;
|
---|
| 5174 |
|
---|
| 5175 | ret = DoApplicationData(ssl, (byte*)sslFrame, &inOutIdx);
|
---|
| 5176 | if (ret == 0) {
|
---|
| 5177 | ret = ssl->buffers.clearOutputBuffer.length;
|
---|
| 5178 | TraceGotData(ret);
|
---|
| 5179 | if (ret) { /* may be blank message */
|
---|
| 5180 | if (data != NULL) {
|
---|
| 5181 | byte* tmpData; /* don't leak on realloc free */
|
---|
| 5182 | /* add an extra byte at end of allocation in case
|
---|
| 5183 | * user wants to null terminate plaintext */
|
---|
| 5184 | tmpData = (byte*)XREALLOC(*data, decoded + ret + 1,
|
---|
| 5185 | NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
---|
| 5186 | if (tmpData == NULL) {
|
---|
| 5187 | ForceZero(*data, decoded);
|
---|
| 5188 | XFREE(*data, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
---|
| 5189 | *data = NULL;
|
---|
| 5190 | SetError(MEMORY_STR, error, session,
|
---|
| 5191 | FATAL_ERROR_STATE);
|
---|
| 5192 | return -1;
|
---|
| 5193 | }
|
---|
| 5194 | *data = tmpData;
|
---|
| 5195 | XMEMCPY(*data + decoded,
|
---|
| 5196 | ssl->buffers.clearOutputBuffer.buffer, ret);
|
---|
| 5197 | }
|
---|
| 5198 | else {
|
---|
| 5199 | #ifdef WOLFSSL_SNIFFER_STORE_DATA_CB
|
---|
| 5200 | if (StoreDataCb) {
|
---|
| 5201 | const byte* buf;
|
---|
| 5202 | word32 offset = 0;
|
---|
| 5203 | word32 bufSz;
|
---|
| 5204 | int stored;
|
---|
| 5205 |
|
---|
| 5206 | buf = ssl->buffers.clearOutputBuffer.buffer;
|
---|
| 5207 | bufSz = ssl->buffers.clearOutputBuffer.length;
|
---|
| 5208 | do {
|
---|
| 5209 | stored = StoreDataCb(buf, bufSz, offset,
|
---|
| 5210 | ctx);
|
---|
| 5211 | if (stored <= 0) {
|
---|
| 5212 | return -1;
|
---|
| 5213 | }
|
---|
| 5214 | offset += stored;
|
---|
| 5215 | } while (offset < bufSz);
|
---|
| 5216 | }
|
---|
| 5217 | else {
|
---|
| 5218 | SetError(STORE_DATA_CB_MISSING_STR, error,
|
---|
| 5219 | session, FATAL_ERROR_STATE);
|
---|
| 5220 | return -1;
|
---|
| 5221 | }
|
---|
| 5222 | #else
|
---|
| 5223 | (void)ctx;
|
---|
| 5224 | SetError(NO_DATA_DEST_STR, error, session,
|
---|
| 5225 | FATAL_ERROR_STATE);
|
---|
| 5226 | return -1;
|
---|
| 5227 | #endif
|
---|
| 5228 | }
|
---|
| 5229 | TraceAddedData(ret, decoded);
|
---|
| 5230 | decoded += ret;
|
---|
| 5231 | ssl->buffers.clearOutputBuffer.length = 0;
|
---|
| 5232 | }
|
---|
| 5233 | }
|
---|
| 5234 | else {
|
---|
| 5235 | SetError(BAD_APP_DATA_STR, error,session,FATAL_ERROR_STATE);
|
---|
| 5236 | return -1;
|
---|
| 5237 | }
|
---|
| 5238 | if (ssl->buffers.outputBuffer.dynamicFlag)
|
---|
| 5239 | ShrinkOutputBuffer(ssl);
|
---|
| 5240 |
|
---|
| 5241 | sslFrame += inOutIdx;
|
---|
| 5242 | sslBytes -= inOutIdx;
|
---|
| 5243 | }
|
---|
| 5244 | break;
|
---|
| 5245 | case alert:
|
---|
| 5246 | Trace(GOT_ALERT_STR);
|
---|
| 5247 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 5248 | INC_STAT(SnifferStats.sslAlerts);
|
---|
| 5249 | #endif
|
---|
| 5250 | sslFrame += rhSize;
|
---|
| 5251 | sslBytes -= rhSize;
|
---|
| 5252 | break;
|
---|
| 5253 | case no_type:
|
---|
| 5254 | default:
|
---|
| 5255 | SetError(GOT_UNKNOWN_RECORD_STR, error, session, FATAL_ERROR_STATE);
|
---|
| 5256 | return -1;
|
---|
| 5257 | }
|
---|
| 5258 |
|
---|
| 5259 | /* do we have another msg in record ? */
|
---|
| 5260 | if (sslFrame < recordEnd) {
|
---|
| 5261 | Trace(ANOTHER_MSG_STR);
|
---|
| 5262 | goto doPart;
|
---|
| 5263 | }
|
---|
| 5264 |
|
---|
| 5265 | /* back to input stream instead of potential decrypt buffer */
|
---|
| 5266 | recordEnd = inRecordEnd;
|
---|
| 5267 |
|
---|
| 5268 | /* do we have more records ? */
|
---|
| 5269 | if (recordEnd < end) {
|
---|
| 5270 | Trace(ANOTHER_MSG_STR);
|
---|
| 5271 | sslFrame = recordEnd;
|
---|
| 5272 | sslBytes = (int)(end - recordEnd);
|
---|
| 5273 | goto doMessage;
|
---|
| 5274 | }
|
---|
| 5275 |
|
---|
| 5276 | /* clear used input */
|
---|
| 5277 | ssl->buffers.inputBuffer.length = 0;
|
---|
| 5278 |
|
---|
| 5279 | /* could have more input ready now */
|
---|
| 5280 | if (HaveMoreInput(session, &sslFrame, &sslBytes, &end, error))
|
---|
| 5281 | goto doMessage;
|
---|
| 5282 |
|
---|
| 5283 | if (ssl->buffers.inputBuffer.dynamicFlag)
|
---|
| 5284 | ShrinkInputBuffer(ssl, NO_FORCED_FREE);
|
---|
| 5285 |
|
---|
| 5286 | return decoded;
|
---|
| 5287 | }
|
---|
| 5288 |
|
---|
| 5289 |
|
---|
| 5290 | /* See if we need to process any pending FIN captures */
|
---|
| 5291 | /* Return 0=normal, else = session removed */
|
---|
| 5292 | static int CheckFinCapture(IpInfo* ipInfo, TcpInfo* tcpInfo,
|
---|
| 5293 | SnifferSession* session)
|
---|
| 5294 | {
|
---|
| 5295 | int ret = 0;
|
---|
[464] | 5296 | if (session->finCapture.cliFinSeq && session->finCapture.cliFinSeq <=
|
---|
[457] | 5297 | session->cliExpected) {
|
---|
[464] | 5298 | if (session->finCapture.cliCounted == 0) {
|
---|
[457] | 5299 | session->flags.finCount += 1;
|
---|
[464] | 5300 | session->finCapture.cliCounted = 1;
|
---|
| 5301 | TraceClientFin(session->finCapture.cliFinSeq, session->cliExpected);
|
---|
[457] | 5302 | }
|
---|
| 5303 | }
|
---|
| 5304 |
|
---|
[464] | 5305 | if (session->finCapture.srvFinSeq && session->finCapture.srvFinSeq <=
|
---|
[457] | 5306 | session->srvExpected) {
|
---|
[464] | 5307 | if (session->finCapture.srvCounted == 0) {
|
---|
[457] | 5308 | session->flags.finCount += 1;
|
---|
[464] | 5309 | session->finCapture.srvCounted = 1;
|
---|
| 5310 | TraceServerFin(session->finCapture.srvFinSeq, session->srvExpected);
|
---|
[457] | 5311 | }
|
---|
| 5312 | }
|
---|
| 5313 |
|
---|
| 5314 | if (session->flags.finCount >= 2) {
|
---|
| 5315 | RemoveSession(session, ipInfo, tcpInfo, 0);
|
---|
| 5316 | ret = 1;
|
---|
| 5317 | }
|
---|
| 5318 | return ret;
|
---|
| 5319 | }
|
---|
| 5320 |
|
---|
| 5321 |
|
---|
| 5322 | /* If session is in fatal error state free resources now
|
---|
| 5323 | return true if removed, 0 otherwise */
|
---|
| 5324 | static int RemoveFatalSession(IpInfo* ipInfo, TcpInfo* tcpInfo,
|
---|
| 5325 | SnifferSession* session, char* error)
|
---|
| 5326 | {
|
---|
| 5327 | if (session && session->flags.fatalError == FATAL_ERROR_STATE) {
|
---|
| 5328 | RemoveSession(session, ipInfo, tcpInfo, 0);
|
---|
| 5329 | SetError(FATAL_ERROR_STR, error, NULL, 0);
|
---|
| 5330 | return 1;
|
---|
| 5331 | }
|
---|
| 5332 | return 0;
|
---|
| 5333 | }
|
---|
| 5334 |
|
---|
| 5335 |
|
---|
| 5336 | /* Passes in an IP/TCP packet for decoding (ethernet/localhost frame) removed */
|
---|
| 5337 | /* returns Number of bytes on success, 0 for no data yet, and -1 on error */
|
---|
| 5338 | static int ssl_DecodePacketInternal(const byte* packet, int length,
|
---|
| 5339 | void* vChain, word32 chainSz,
|
---|
| 5340 | byte** data, SSLInfo* sslInfo,
|
---|
| 5341 | void* ctx, char* error)
|
---|
| 5342 | {
|
---|
| 5343 | TcpInfo tcpInfo;
|
---|
| 5344 | IpInfo ipInfo;
|
---|
| 5345 | const byte* sslFrame;
|
---|
| 5346 | const byte* end;
|
---|
| 5347 | int sslBytes; /* ssl bytes unconsumed */
|
---|
| 5348 | int ret;
|
---|
| 5349 | SnifferSession* session = 0;
|
---|
| 5350 |
|
---|
| 5351 | #ifdef WOLFSSL_SNIFFER_CHAIN_INPUT
|
---|
| 5352 | if (packet == NULL && vChain != NULL) {
|
---|
| 5353 | struct iovec* chain = (struct iovec*)vChain;
|
---|
| 5354 | word32 i;
|
---|
| 5355 |
|
---|
| 5356 | length = 0;
|
---|
| 5357 | for (i = 0; i < chainSz; i++)
|
---|
| 5358 | length += chain[i].iov_len;
|
---|
| 5359 | packet = (const byte*)chain[0].iov_base;
|
---|
| 5360 | }
|
---|
| 5361 | #endif
|
---|
| 5362 |
|
---|
| 5363 | if (CheckHeaders(&ipInfo, &tcpInfo, packet, length, &sslFrame, &sslBytes,
|
---|
| 5364 | error) != 0)
|
---|
| 5365 | return -1;
|
---|
| 5366 |
|
---|
| 5367 | end = sslFrame + sslBytes;
|
---|
| 5368 |
|
---|
| 5369 | ret = CheckSession(&ipInfo, &tcpInfo, sslBytes, &session, error);
|
---|
| 5370 | if (RemoveFatalSession(&ipInfo, &tcpInfo, session, error)) return -1;
|
---|
| 5371 | else if (ret == -1) return -1;
|
---|
| 5372 | else if (ret == 1) {
|
---|
| 5373 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 5374 | if (sslBytes > 0) {
|
---|
| 5375 | LOCK_STAT();
|
---|
| 5376 | NOLOCK_INC_STAT(SnifferStats.sslEncryptedPackets);
|
---|
| 5377 | NOLOCK_ADD_TO_STAT(SnifferStats.sslEncryptedBytes, sslBytes);
|
---|
| 5378 | UNLOCK_STAT();
|
---|
| 5379 | }
|
---|
| 5380 | else
|
---|
| 5381 | INC_STAT(SnifferStats.sslDecryptedPackets);
|
---|
| 5382 | #endif
|
---|
| 5383 | return 0; /* done for now */
|
---|
| 5384 | }
|
---|
| 5385 |
|
---|
| 5386 | ret = CheckSequence(&ipInfo, &tcpInfo, session, &sslBytes, &sslFrame,error);
|
---|
| 5387 | if (RemoveFatalSession(&ipInfo, &tcpInfo, session, error)) return -1;
|
---|
| 5388 | else if (ret == -1) return -1;
|
---|
| 5389 | else if (ret == 1) {
|
---|
| 5390 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 5391 | INC_STAT(SnifferStats.sslDecryptedPackets);
|
---|
| 5392 | #endif
|
---|
| 5393 | return 0; /* done for now */
|
---|
| 5394 | }
|
---|
| 5395 |
|
---|
| 5396 | ret = CheckPreRecord(&ipInfo, &tcpInfo, &sslFrame, &session, &sslBytes,
|
---|
| 5397 | &end, vChain, chainSz, error);
|
---|
| 5398 | if (RemoveFatalSession(&ipInfo, &tcpInfo, session, error)) return -1;
|
---|
| 5399 | else if (ret == -1) return -1;
|
---|
| 5400 | else if (ret == 1) {
|
---|
| 5401 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 5402 | INC_STAT(SnifferStats.sslDecryptedPackets);
|
---|
| 5403 | #endif
|
---|
| 5404 | return 0; /* done for now */
|
---|
| 5405 | }
|
---|
| 5406 |
|
---|
| 5407 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 5408 | if (sslBytes > 0) {
|
---|
| 5409 | LOCK_STAT();
|
---|
| 5410 | NOLOCK_INC_STAT(SnifferStats.sslEncryptedPackets);
|
---|
| 5411 | NOLOCK_ADD_TO_STAT(SnifferStats.sslEncryptedBytes, sslBytes);
|
---|
| 5412 | UNLOCK_STAT();
|
---|
| 5413 | }
|
---|
| 5414 | else
|
---|
| 5415 | INC_STAT(SnifferStats.sslDecryptedPackets);
|
---|
| 5416 | #endif
|
---|
| 5417 |
|
---|
| 5418 | ret = ProcessMessage(sslFrame, session, sslBytes, data, end, ctx, error);
|
---|
| 5419 | if (RemoveFatalSession(&ipInfo, &tcpInfo, session, error)) return -1;
|
---|
| 5420 | if (CheckFinCapture(&ipInfo, &tcpInfo, session) == 0) {
|
---|
| 5421 | CopySessionInfo(session, sslInfo);
|
---|
| 5422 | }
|
---|
| 5423 |
|
---|
| 5424 | return ret;
|
---|
| 5425 | }
|
---|
| 5426 |
|
---|
| 5427 |
|
---|
| 5428 | /* Passes in an IP/TCP packet for decoding (ethernet/localhost frame) removed */
|
---|
| 5429 | /* returns Number of bytes on success, 0 for no data yet, and -1 on error */
|
---|
| 5430 | /* Also returns Session Info if available */
|
---|
| 5431 | int ssl_DecodePacketWithSessionInfo(const unsigned char* packet, int length,
|
---|
| 5432 | unsigned char** data, SSLInfo* sslInfo, char* error)
|
---|
| 5433 | {
|
---|
| 5434 | return ssl_DecodePacketInternal(packet, length, NULL, 0, data, sslInfo,
|
---|
| 5435 | NULL, error);
|
---|
| 5436 | }
|
---|
| 5437 |
|
---|
| 5438 |
|
---|
| 5439 | /* Passes in an IP/TCP packet for decoding (ethernet/localhost frame) removed */
|
---|
| 5440 | /* returns Number of bytes on success, 0 for no data yet, and -1 on error */
|
---|
| 5441 | int ssl_DecodePacket(const byte* packet, int length, byte** data, char* error)
|
---|
| 5442 | {
|
---|
| 5443 | return ssl_DecodePacketInternal(packet, length, NULL, 0, data, NULL, NULL,
|
---|
| 5444 | error);
|
---|
| 5445 | }
|
---|
| 5446 |
|
---|
| 5447 |
|
---|
| 5448 | #ifdef WOLFSSL_SNIFFER_STORE_DATA_CB
|
---|
| 5449 |
|
---|
| 5450 | int ssl_DecodePacketWithSessionInfoStoreData(const unsigned char* packet,
|
---|
| 5451 | int length, void* ctx, SSLInfo* sslInfo, char* error)
|
---|
| 5452 | {
|
---|
| 5453 | return ssl_DecodePacketInternal(packet, length, NULL, 0, NULL, sslInfo,
|
---|
| 5454 | ctx, error);
|
---|
| 5455 | }
|
---|
| 5456 |
|
---|
| 5457 | #endif
|
---|
| 5458 |
|
---|
| 5459 |
|
---|
| 5460 | #ifdef WOLFSSL_SNIFFER_CHAIN_INPUT
|
---|
| 5461 |
|
---|
| 5462 | int ssl_DecodePacketWithChain(void* vChain, word32 chainSz, byte** data,
|
---|
| 5463 | char* error)
|
---|
| 5464 | {
|
---|
| 5465 | return ssl_DecodePacketInternal(NULL, 0, vChain, chainSz, data, NULL, NULL,
|
---|
| 5466 | error);
|
---|
| 5467 | }
|
---|
| 5468 |
|
---|
| 5469 | #endif
|
---|
| 5470 |
|
---|
| 5471 |
|
---|
| 5472 | #if defined(WOLFSSL_SNIFFER_CHAIN_INPUT) && \
|
---|
| 5473 | defined(WOLFSSL_SNIFFER_STORE_DATA_CB)
|
---|
| 5474 |
|
---|
| 5475 | int ssl_DecodePacketWithChainSessionInfoStoreData(void* vChain, word32 chainSz,
|
---|
| 5476 | void* ctx, SSLInfo* sslInfo, char* error)
|
---|
| 5477 | {
|
---|
| 5478 | return ssl_DecodePacketInternal(NULL, 0, vChain, chainSz, NULL, sslInfo,
|
---|
| 5479 | ctx, error);
|
---|
| 5480 | }
|
---|
| 5481 |
|
---|
| 5482 | #endif
|
---|
| 5483 |
|
---|
| 5484 |
|
---|
| 5485 | /* Deallocator for the decoded data buffer. */
|
---|
| 5486 | /* returns 0 on success, -1 on error */
|
---|
| 5487 | int ssl_FreeDecodeBuffer(byte** data, char* error)
|
---|
| 5488 | {
|
---|
| 5489 | return ssl_FreeZeroDecodeBuffer(data, 0, error);
|
---|
| 5490 | }
|
---|
| 5491 |
|
---|
| 5492 |
|
---|
| 5493 | /* Deallocator for the decoded data buffer, zeros out buffer. */
|
---|
| 5494 | /* returns 0 on success, -1 on error */
|
---|
| 5495 | int ssl_FreeZeroDecodeBuffer(byte** data, int sz, char* error)
|
---|
| 5496 | {
|
---|
| 5497 | (void)error;
|
---|
| 5498 |
|
---|
| 5499 | if (sz < 0) {
|
---|
| 5500 | return -1;
|
---|
| 5501 | }
|
---|
| 5502 |
|
---|
| 5503 | if (data != NULL) {
|
---|
| 5504 | ForceZero(*data, (word32)sz);
|
---|
| 5505 | XFREE(*data, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
---|
| 5506 | *data = NULL;
|
---|
| 5507 | }
|
---|
| 5508 |
|
---|
| 5509 | return 0;
|
---|
| 5510 | }
|
---|
| 5511 |
|
---|
| 5512 |
|
---|
| 5513 | /* Enables (if traceFile)/ Disables debug tracing */
|
---|
| 5514 | /* returns 0 on success, -1 on error */
|
---|
| 5515 | int ssl_Trace(const char* traceFile, char* error)
|
---|
| 5516 | {
|
---|
| 5517 | if (traceFile) {
|
---|
| 5518 | /* Don't try to reopen the file */
|
---|
| 5519 | if (TraceFile == NULL) {
|
---|
| 5520 | TraceFile = fopen(traceFile, "a");
|
---|
| 5521 | if (!TraceFile) {
|
---|
| 5522 | SetError(BAD_TRACE_FILE_STR, error, NULL, 0);
|
---|
| 5523 | return -1;
|
---|
| 5524 | }
|
---|
| 5525 | TraceOn = 1;
|
---|
| 5526 | }
|
---|
| 5527 | }
|
---|
| 5528 | else
|
---|
| 5529 | TraceOn = 0;
|
---|
| 5530 |
|
---|
| 5531 | return 0;
|
---|
| 5532 | }
|
---|
| 5533 |
|
---|
| 5534 |
|
---|
| 5535 | /* Enables/Disables Recovery of missed data if later packets allow
|
---|
| 5536 | * maxMemory is number of bytes to use for reassembly buffering per session,
|
---|
| 5537 | * -1 means unlimited
|
---|
| 5538 | * returns 0 on success, -1 on error */
|
---|
| 5539 | int ssl_EnableRecovery(int onOff, int maxMemory, char* error)
|
---|
| 5540 | {
|
---|
| 5541 | (void)error;
|
---|
| 5542 |
|
---|
| 5543 | RecoveryEnabled = onOff;
|
---|
| 5544 | if (onOff)
|
---|
| 5545 | MaxRecoveryMemory = maxMemory;
|
---|
| 5546 |
|
---|
| 5547 | return 0;
|
---|
| 5548 | }
|
---|
| 5549 |
|
---|
| 5550 |
|
---|
| 5551 |
|
---|
| 5552 | #ifdef WOLFSSL_SESSION_STATS
|
---|
| 5553 |
|
---|
| 5554 | int ssl_GetSessionStats(unsigned int* active, unsigned int* total,
|
---|
| 5555 | unsigned int* peak, unsigned int* maxSessions,
|
---|
| 5556 | unsigned int* missedData, unsigned int* reassemblyMem,
|
---|
| 5557 | char* error)
|
---|
| 5558 | {
|
---|
| 5559 | int ret;
|
---|
| 5560 |
|
---|
| 5561 | if (missedData) {
|
---|
| 5562 | wc_LockMutex(&RecoveryMutex);
|
---|
| 5563 | *missedData = MissedDataSessions;
|
---|
| 5564 | wc_UnLockMutex(&RecoveryMutex);
|
---|
| 5565 | }
|
---|
| 5566 |
|
---|
| 5567 | if (reassemblyMem) {
|
---|
| 5568 | SnifferSession* session;
|
---|
| 5569 | int i;
|
---|
| 5570 |
|
---|
| 5571 | *reassemblyMem = 0;
|
---|
| 5572 | wc_LockMutex(&SessionMutex);
|
---|
| 5573 | for (i = 0; i < HASH_SIZE; i++) {
|
---|
| 5574 | session = SessionTable[i];
|
---|
| 5575 | while (session) {
|
---|
| 5576 | *reassemblyMem += session->cliReassemblyMemory;
|
---|
| 5577 | *reassemblyMem += session->srvReassemblyMemory;
|
---|
| 5578 | session = session->next;
|
---|
| 5579 | }
|
---|
| 5580 | }
|
---|
| 5581 | wc_UnLockMutex(&SessionMutex);
|
---|
| 5582 | }
|
---|
| 5583 |
|
---|
| 5584 | ret = wolfSSL_get_session_stats(active, total, peak, maxSessions);
|
---|
| 5585 |
|
---|
| 5586 | if (ret == WOLFSSL_SUCCESS)
|
---|
| 5587 | return 0;
|
---|
| 5588 | else {
|
---|
| 5589 | SetError(BAD_SESSION_STATS, error, NULL, 0);
|
---|
| 5590 | return -1;
|
---|
| 5591 | }
|
---|
| 5592 | }
|
---|
| 5593 |
|
---|
| 5594 | #endif
|
---|
| 5595 |
|
---|
| 5596 |
|
---|
| 5597 |
|
---|
| 5598 | int ssl_SetConnectionCb(SSLConnCb cb)
|
---|
| 5599 | {
|
---|
| 5600 | ConnectionCb = cb;
|
---|
| 5601 | return 0;
|
---|
| 5602 | }
|
---|
| 5603 |
|
---|
| 5604 |
|
---|
| 5605 |
|
---|
| 5606 | int ssl_SetConnectionCtx(void* ctx)
|
---|
| 5607 | {
|
---|
| 5608 | ConnectionCbCtx = ctx;
|
---|
| 5609 | return 0;
|
---|
| 5610 | }
|
---|
| 5611 |
|
---|
| 5612 |
|
---|
| 5613 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
| 5614 |
|
---|
| 5615 | /* Resets the statistics tracking global structure.
|
---|
| 5616 | * returns 0 on success, -1 on error */
|
---|
| 5617 | int ssl_ResetStatistics(void)
|
---|
| 5618 | {
|
---|
| 5619 | wc_LockMutex(&StatsMutex);
|
---|
| 5620 | XMEMSET(&SnifferStats, 0, sizeof(SSLStats));
|
---|
| 5621 | wc_UnLockMutex(&StatsMutex);
|
---|
| 5622 | return 0;
|
---|
| 5623 | }
|
---|
| 5624 |
|
---|
| 5625 |
|
---|
| 5626 | /* Copies the SSL statistics into the provided stats record.
|
---|
| 5627 | * returns 0 on success, -1 on error */
|
---|
| 5628 | int ssl_ReadStatistics(SSLStats* stats)
|
---|
| 5629 | {
|
---|
| 5630 | if (stats == NULL)
|
---|
| 5631 | return -1;
|
---|
| 5632 |
|
---|
| 5633 | LOCK_STAT();
|
---|
| 5634 | XMEMCPY(stats, &SnifferStats, sizeof(SSLStats));
|
---|
| 5635 | UNLOCK_STAT();
|
---|
| 5636 | return 0;
|
---|
| 5637 | }
|
---|
| 5638 |
|
---|
| 5639 | /* Copies the SSL statistics into the provided stats record then
|
---|
| 5640 | * resets the statistics tracking global structure.
|
---|
| 5641 | * returns 0 on success, -1 on error */
|
---|
| 5642 | int ssl_ReadResetStatistics(SSLStats* stats)
|
---|
| 5643 | {
|
---|
| 5644 | if (stats == NULL)
|
---|
| 5645 | return -1;
|
---|
| 5646 |
|
---|
| 5647 | LOCK_STAT();
|
---|
| 5648 | XMEMCPY(stats, &SnifferStats, sizeof(SSLStats));
|
---|
| 5649 | XMEMSET(&SnifferStats, 0, sizeof(SSLStats));
|
---|
| 5650 | UNLOCK_STAT();
|
---|
| 5651 | return 0;
|
---|
| 5652 | }
|
---|
| 5653 |
|
---|
| 5654 | #endif /* WOLFSSL_SNIFFER_STATS */
|
---|
| 5655 |
|
---|
| 5656 |
|
---|
| 5657 | #ifdef WOLFSSL_SNIFFER_WATCH
|
---|
| 5658 |
|
---|
| 5659 | int ssl_SetWatchKeyCallback_ex(SSLWatchCb cb, int devId, char* error)
|
---|
| 5660 | {
|
---|
| 5661 | (void)devId;
|
---|
| 5662 | WatchCb = cb;
|
---|
| 5663 | return CreateWatchSnifferServer(error);
|
---|
| 5664 | }
|
---|
| 5665 |
|
---|
| 5666 |
|
---|
| 5667 | int ssl_SetWatchKeyCallback(SSLWatchCb cb, char* error)
|
---|
| 5668 | {
|
---|
| 5669 | WatchCb = cb;
|
---|
| 5670 | return CreateWatchSnifferServer(error);
|
---|
| 5671 | }
|
---|
| 5672 |
|
---|
| 5673 |
|
---|
| 5674 | int ssl_SetWatchKeyCtx(void* ctx, char* error)
|
---|
| 5675 | {
|
---|
| 5676 | (void)error;
|
---|
| 5677 | WatchCbCtx = ctx;
|
---|
| 5678 | return 0;
|
---|
| 5679 | }
|
---|
| 5680 |
|
---|
| 5681 |
|
---|
| 5682 | int ssl_SetWatchKey_buffer(void* vSniffer, const byte* key, word32 keySz,
|
---|
| 5683 | int keyType, char* error)
|
---|
| 5684 | {
|
---|
| 5685 | SnifferSession* sniffer;
|
---|
| 5686 | int ret;
|
---|
| 5687 |
|
---|
| 5688 | if (vSniffer == NULL) {
|
---|
| 5689 | return -1;
|
---|
| 5690 | }
|
---|
| 5691 | if (key == NULL || keySz == 0) {
|
---|
| 5692 | return -1;
|
---|
| 5693 | }
|
---|
| 5694 |
|
---|
| 5695 | sniffer = (SnifferSession*)vSniffer;
|
---|
| 5696 | /* Remap the keyType from what the user can use to
|
---|
| 5697 | * what wolfSSL_use_PrivateKey_buffer expects. */
|
---|
| 5698 | keyType = (keyType == FILETYPE_PEM) ? WOLFSSL_FILETYPE_PEM :
|
---|
| 5699 | WOLFSSL_FILETYPE_ASN1;
|
---|
| 5700 |
|
---|
| 5701 | ret = wolfSSL_use_PrivateKey_buffer(sniffer->sslServer,
|
---|
| 5702 | key, keySz, keyType);
|
---|
| 5703 | if (ret != WOLFSSL_SUCCESS) {
|
---|
| 5704 | SetError(KEY_FILE_STR, error, sniffer, FATAL_ERROR_STATE);
|
---|
| 5705 | return -1;
|
---|
| 5706 | }
|
---|
| 5707 |
|
---|
| 5708 | return 0;
|
---|
| 5709 | }
|
---|
| 5710 |
|
---|
| 5711 |
|
---|
| 5712 | int ssl_SetWatchKey_file(void* vSniffer, const char* keyFile, int keyType,
|
---|
| 5713 | const char* password, char* error)
|
---|
| 5714 | {
|
---|
| 5715 | byte* keyBuf = NULL;
|
---|
| 5716 | word32 keyBufSz = 0;
|
---|
| 5717 | int ret;
|
---|
| 5718 |
|
---|
| 5719 | if (vSniffer == NULL) {
|
---|
| 5720 | return -1;
|
---|
| 5721 | }
|
---|
| 5722 | if (keyFile == NULL) {
|
---|
| 5723 | return -1;
|
---|
| 5724 | }
|
---|
| 5725 |
|
---|
| 5726 | /* Remap the keyType from what the user can use to
|
---|
| 5727 | * what LoadKeyFile expects. */
|
---|
| 5728 | keyType = (keyType == FILETYPE_PEM) ? WOLFSSL_FILETYPE_PEM :
|
---|
| 5729 | WOLFSSL_FILETYPE_ASN1;
|
---|
| 5730 |
|
---|
[464] | 5731 | ret = LoadKeyFile(&keyBuf, &keyBufSz, keyFile, 0, keyType, password);
|
---|
[457] | 5732 | if (ret < 0) {
|
---|
| 5733 | SetError(KEY_FILE_STR, error, NULL, 0);
|
---|
| 5734 | XFREE(keyBuf, NULL, DYNAMIC_TYPE_X509);
|
---|
| 5735 | return -1;
|
---|
| 5736 | }
|
---|
| 5737 |
|
---|
| 5738 | ret = ssl_SetWatchKey_buffer(vSniffer, keyBuf, keyBufSz, FILETYPE_DER,
|
---|
| 5739 | error);
|
---|
| 5740 | XFREE(keyBuf, NULL, DYNAMIC_TYPE_X509);
|
---|
| 5741 |
|
---|
| 5742 | return ret;
|
---|
| 5743 | }
|
---|
| 5744 |
|
---|
| 5745 | #endif /* WOLFSSL_SNIFFER_WATCH */
|
---|
| 5746 |
|
---|
| 5747 |
|
---|
| 5748 | #ifdef WOLFSSL_SNIFFER_STORE_DATA_CB
|
---|
| 5749 |
|
---|
| 5750 | int ssl_SetStoreDataCallback(SSLStoreDataCb cb)
|
---|
| 5751 | {
|
---|
| 5752 | StoreDataCb = cb;
|
---|
| 5753 | return 0;
|
---|
| 5754 | }
|
---|
| 5755 |
|
---|
| 5756 | #endif /* WOLFSSL_SNIFFER_STORE_DATA_CB */
|
---|
| 5757 |
|
---|
| 5758 | #endif /* WOLFSSL_SNIFFER */
|
---|
| 5759 | #endif /* WOLFCRYPT_ONLY */
|
---|