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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28 | #include <wolfssl/wolfcrypt/wc_port.h>
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29 |
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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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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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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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76 | #else
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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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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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135 | FATAL_ERROR_STATE = 1, /* SnifferSession fatal error state */
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136 | TICKET_HINT_LEN = 4, /* Session Ticket Hint length */
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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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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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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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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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206 | static WOLFSSL_GLOBAL XFILE TraceFile = 0;
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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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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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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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388 | int isEphemeralKey;
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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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406 | WOLFSSL_CTX* ctx; /* SSL context */
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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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435 | byte gotFinished; /* processed finished */
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436 | } Flags;
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437 |
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438 |
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439 | /* Out of Order FIN capture */
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440 | typedef struct FinCapture {
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441 | word32 cliFinSeq; /* client relative sequence FIN 0 is no */
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442 | word32 srvFinSeq; /* server relative sequence FIN, 0 is no */
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443 | byte cliCounted; /* did we count yet, detects duplicates */
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444 | byte srvCounted; /* did we count yet, detects duplicates */
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445 | } FinCapture;
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446 |
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447 |
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448 | typedef struct HsHashes {
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449 | #ifndef NO_OLD_TLS
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450 | #ifndef NO_SHA
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451 | wc_Sha hashSha;
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452 | #endif
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453 | #ifndef NO_MD5
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454 | wc_Md5 hashMd5;
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455 | #endif
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456 | #endif /* !NO_OLD_TLS */
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457 | #ifndef NO_SHA256
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458 | wc_Sha256 hashSha256;
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459 | #endif
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460 | #ifdef WOLFSSL_SHA384
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461 | wc_Sha384 hashSha384;
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462 | #endif
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463 | } HsHashes;
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464 |
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465 | typedef struct KeyShareInfo {
|
---|
466 | word16 named_group;
|
---|
467 | int key_len;
|
---|
468 | const byte* key;
|
---|
469 |
|
---|
470 | /* additional info */
|
---|
471 | int dh_key_bits;
|
---|
472 | int curve_id;
|
---|
473 | } KeyShareInfo;
|
---|
474 |
|
---|
475 |
|
---|
476 | /* Sniffer Session holds info for each client/server SSL/TLS session */
|
---|
477 | typedef struct SnifferSession {
|
---|
478 | SnifferServer* context; /* server context */
|
---|
479 | WOLFSSL* sslServer; /* SSL server side decode */
|
---|
480 | WOLFSSL* sslClient; /* SSL client side decode */
|
---|
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) */
|
---|
489 | FinCapture finCapture; /* retain out of order FIN s */
|
---|
490 | Flags flags; /* session flags */
|
---|
491 | time_t lastUsed; /* last used ticks */
|
---|
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 */
|
---|
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
|
---|
504 | #ifdef HAVE_SNI
|
---|
505 | const char* sni; /* server name indication */
|
---|
506 | #endif
|
---|
507 | #ifdef HAVE_EXTENDED_MASTER
|
---|
508 | HsHashes* hash;
|
---|
509 | #endif
|
---|
510 | #ifdef WOLFSSL_TLS13
|
---|
511 | byte* cliKeyShare;
|
---|
512 | word32 cliKeyShareSz;
|
---|
513 | KeyShareInfo srvKs;
|
---|
514 | KeyShareInfo cliKs;
|
---|
515 | #endif
|
---|
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
|
---|
651 | wolfSSL_CTX_free(srv->ctx);
|
---|
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) {
|
---|
687 | wolfSSL_free(session->sslClient);
|
---|
688 | wolfSSL_free(session->sslServer);
|
---|
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
|
---|
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
|
---|
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 |
|
---|
724 | /* Free sessions (wolfSSL objects) first */
|
---|
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 | }
|
---|
733 | SessionCount = 0;
|
---|
734 |
|
---|
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 |
|
---|
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;
|
---|
762 | XFCLOSE(TraceFile);
|
---|
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
|
---|
784 | if (ret == 0)
|
---|
785 | ret = wc_InitMd5(&hash->hashMd5);
|
---|
786 | #endif
|
---|
787 | #endif /* !NO_OLD_TLS */
|
---|
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
|
---|
813 | if (ret == 0)
|
---|
814 | ret = wc_Md5Update(&hash->hashMd5, input, sz);
|
---|
815 | #endif
|
---|
816 | #endif /* !NO_OLD_TLS */
|
---|
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
|
---|
833 | XMEMCPY(&d->hashSha, &s->hashSha, sizeof(wc_Sha));
|
---|
834 | #endif
|
---|
835 | #ifndef NO_MD5
|
---|
836 | XMEMCPY(&d->hashMd5, &s->hashMd5, sizeof(wc_Md5));
|
---|
837 | #endif
|
---|
838 | #endif /* !NO_OLD_TLS */
|
---|
839 | #ifndef NO_SHA256
|
---|
840 | XMEMCPY(&d->hashSha256, &s->hashSha256, sizeof(wc_Sha256));
|
---|
841 | #endif
|
---|
842 | #ifdef WOLFSSL_SHA384
|
---|
843 | XMEMCPY(&d->hashSha384, &s->hashSha384, sizeof(wc_Sha384));
|
---|
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 */
|
---|
867 | static void InitFinCapture(FinCapture* cap)
|
---|
868 | {
|
---|
869 | XMEMSET(cap, 0, sizeof(FinCapture));
|
---|
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);
|
---|
878 | InitFinCapture(&session->finCapture);
|
---|
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);
|
---|
1001 | XFPRINTF(TraceFile, "\t%s\n", myBuffer);
|
---|
1002 | #ifdef DEBUG_SNIFFER
|
---|
1003 | XFPRINTF(stderr, "\t%s\n", myBuffer);
|
---|
1004 | #endif
|
---|
1005 | }
|
---|
1006 | }
|
---|
1007 |
|
---|
1008 |
|
---|
1009 | /* Show TimeStamp for beginning of packet Trace */
|
---|
1010 | static void TraceHeader(void)
|
---|
1011 | {
|
---|
1012 | if (TraceOn) {
|
---|
1013 | time_t ticks = XTIME(NULL);
|
---|
1014 | XFPRINTF(TraceFile, "\n%s", XCTIME(&ticks));
|
---|
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) {
|
---|
1023 | XFPRINTF(TraceFile, "\tTrying to install a new Sniffer Server with\n");
|
---|
1024 | XFPRINTF(TraceFile, "\tserver: %s, port: %d, keyFile: %s\n", srv, port,
|
---|
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) {
|
---|
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 : "");
|
---|
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;
|
---|
1054 | XFPRINTF(TraceFile, "\tGot a Packet to decode, packet %u\n",
|
---|
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 | {
|
---|
1063 | return XINET_NTOP(version, src, dst, TRACE_MSG_SZ);
|
---|
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];
|
---|
1073 | XFPRINTF(TraceFile, "\tdst:%s src:%s\n",
|
---|
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];
|
---|
1086 | XFPRINTF(TraceFile, "\tdst: %s src: %s\n",
|
---|
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) {
|
---|
1097 | XFPRINTF(TraceFile, "\tdstPort:%u srcPort:%u\n", XNTOHS(tcphdr->dstPort),
|
---|
1098 | XNTOHS(tcphdr->srcPort));
|
---|
1099 | }
|
---|
1100 | }
|
---|
1101 |
|
---|
1102 |
|
---|
1103 | /* Show sequence and payload length for Trace */
|
---|
1104 | static void TraceSequence(word32 seq, int len)
|
---|
1105 | {
|
---|
1106 | if (TraceOn) {
|
---|
1107 | XFPRINTF(TraceFile, "\tSequence:%u, payload length:%d\n", seq, len);
|
---|
1108 | }
|
---|
1109 | }
|
---|
1110 |
|
---|
1111 |
|
---|
1112 | /* Show sequence and payload length for Trace */
|
---|
1113 | static void TraceAck(word32 ack, word32 expected)
|
---|
1114 | {
|
---|
1115 | if (TraceOn) {
|
---|
1116 | XFPRINTF(TraceFile, "\tAck:%u Expected:%u\n", ack, expected);
|
---|
1117 | }
|
---|
1118 | }
|
---|
1119 |
|
---|
1120 |
|
---|
1121 | /* Show relative expected and relative received sequences */
|
---|
1122 | static void TraceRelativeSequence(word32 expected, word32 got)
|
---|
1123 | {
|
---|
1124 | if (TraceOn) {
|
---|
1125 | XFPRINTF(TraceFile, "\tExpected sequence:%u, received sequence:%u\n",
|
---|
1126 | expected, got);
|
---|
1127 | }
|
---|
1128 | }
|
---|
1129 |
|
---|
1130 |
|
---|
1131 | /* Show server sequence startup from SYN */
|
---|
1132 | static void TraceServerSyn(word32 seq)
|
---|
1133 | {
|
---|
1134 | if (TraceOn) {
|
---|
1135 | XFPRINTF(TraceFile, "\tServer SYN, Sequence Start:%u\n", seq);
|
---|
1136 | }
|
---|
1137 | }
|
---|
1138 |
|
---|
1139 |
|
---|
1140 | /* Show client sequence startup from SYN */
|
---|
1141 | static void TraceClientSyn(word32 seq)
|
---|
1142 | {
|
---|
1143 | if (TraceOn) {
|
---|
1144 | XFPRINTF(TraceFile, "\tClient SYN, Sequence Start:%u\n", seq);
|
---|
1145 | }
|
---|
1146 | }
|
---|
1147 |
|
---|
1148 |
|
---|
1149 | /* Show client FIN capture */
|
---|
1150 | static void TraceClientFin(word32 finSeq, word32 relSeq)
|
---|
1151 | {
|
---|
1152 | if (TraceOn) {
|
---|
1153 | XFPRINTF(TraceFile, "\tClient FIN capture:%u, current SEQ:%u\n",
|
---|
1154 | finSeq, relSeq);
|
---|
1155 | }
|
---|
1156 | }
|
---|
1157 |
|
---|
1158 |
|
---|
1159 | /* Show server FIN capture */
|
---|
1160 | static void TraceServerFin(word32 finSeq, word32 relSeq)
|
---|
1161 | {
|
---|
1162 | if (TraceOn) {
|
---|
1163 | XFPRINTF(TraceFile, "\tServer FIN capture:%u, current SEQ:%u\n",
|
---|
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) {
|
---|
1173 | XFPRINTF(TraceFile, "\t%d bytes of SSL App data processed\n", bytes);
|
---|
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) {
|
---|
1182 | XFPRINTF(TraceFile,
|
---|
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) {
|
---|
1193 | XFPRINTF(TraceFile, "\tFound a stale session\n");
|
---|
1194 | }
|
---|
1195 | }
|
---|
1196 |
|
---|
1197 |
|
---|
1198 | /* Show Finding Stale Sessions */
|
---|
1199 | static void TraceFindingStale(void)
|
---|
1200 | {
|
---|
1201 | if (TraceOn) {
|
---|
1202 | XFPRINTF(TraceFile, "\tTrying to find Stale Sessions\n");
|
---|
1203 | }
|
---|
1204 | }
|
---|
1205 |
|
---|
1206 |
|
---|
1207 | /* Show Removed Session */
|
---|
1208 | static void TraceRemovedSession(void)
|
---|
1209 | {
|
---|
1210 | if (TraceOn) {
|
---|
1211 | XFPRINTF(TraceFile, "\tRemoved it\n");
|
---|
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) {
|
---|
1221 | XFPRINTF(TraceFile,
|
---|
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) {
|
---|
1247 | XFPRINTF(TraceFile, "\tAdding %d to %s\n", add, name);
|
---|
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;
|
---|
1414 | time_t currTime = XTIME(NULL);
|
---|
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,
|
---|
1462 | const char* keyFile, int keySz, int typeKey,
|
---|
1463 | const char* password)
|
---|
1464 | {
|
---|
1465 | byte* loadBuf;
|
---|
1466 | long fileSz = 0;
|
---|
1467 | XFILE file;
|
---|
1468 | int ret = -1;
|
---|
1469 |
|
---|
1470 | if (keyBuf == NULL || keyBufSz == NULL || keyFile == NULL) {
|
---|
1471 | return -1;
|
---|
1472 | }
|
---|
1473 |
|
---|
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);
|
---|
1488 |
|
---|
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);
|
---|
1496 | XFCLOSE(file);
|
---|
1497 |
|
---|
1498 | if (ret != fileSz) {
|
---|
1499 | XFREE(loadBuf, NULL, DYNAMIC_TYPE_FILE);
|
---|
1500 | return -1;
|
---|
1501 | }
|
---|
1502 | }
|
---|
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 | }
|
---|
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);
|
---|
1566 | sniffer->ctx = wolfSSL_CTX_new(SSLv23_client_method());
|
---|
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,
|
---|
1585 | const char* keyFile, int keySz, int typeKey, const char* password,
|
---|
1586 | char* error, int isEphemeralKey)
|
---|
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';
|
---|
1615 | namedKey->isEphemeralKey = isEphemeralKey;
|
---|
1616 | ret = LoadKeyFile(&namedKey->key, &namedKey->keySz,
|
---|
1617 | keyFile, keySz, type, password);
|
---|
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;
|
---|
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
|
---|
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 |
|
---|
1662 | sniffer->ctx = wolfSSL_CTX_new(SSLv23_client_method());
|
---|
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
|
---|
1676 | wolfSSL_CTX_set_default_passwd_cb(sniffer->ctx, SetPassword);
|
---|
1677 | wolfSSL_CTX_set_default_passwd_cb_userdata(
|
---|
1678 | sniffer->ctx, (void*)password);
|
---|
1679 | #endif
|
---|
1680 | }
|
---|
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 | }
|
---|
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);
|
---|
1744 | ret = SetNamedPrivateKey(name, address, port, keyFile, 0,
|
---|
1745 | typeKey, password, error, 0);
|
---|
1746 | wc_UnLockMutex(&ServerListMutex);
|
---|
1747 |
|
---|
1748 | if (ret == 0)
|
---|
1749 | Trace(NEW_SERVER_STR);
|
---|
1750 |
|
---|
1751 | return ret;
|
---|
1752 | }
|
---|
1753 |
|
---|
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;
|
---|
1760 |
|
---|
1761 | TraceHeader();
|
---|
1762 | TraceSetNamedServer(name, address, port, NULL);
|
---|
1763 |
|
---|
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 |
|
---|
1776 | /* Sets the private key for a specific server and port */
|
---|
1777 | /* returns 0 on success, -1 on error */
|
---|
1778 | int ssl_SetPrivateKey(const char* address, int port,
|
---|
1779 | const char* keyFile, int typeKey,
|
---|
1780 | const char* password, char* error)
|
---|
1781 | {
|
---|
1782 | int ret;
|
---|
1783 |
|
---|
1784 | TraceHeader();
|
---|
1785 | TraceSetServer(address, port, keyFile);
|
---|
1786 |
|
---|
1787 | wc_LockMutex(&ServerListMutex);
|
---|
1788 | ret = SetNamedPrivateKey(NULL, address, port, keyFile, 0,
|
---|
1789 | typeKey, password, error, 0);
|
---|
1790 | wc_UnLockMutex(&ServerListMutex);
|
---|
1791 |
|
---|
1792 | if (ret == 0)
|
---|
1793 | Trace(NEW_SERVER_STR);
|
---|
1794 |
|
---|
1795 | return ret;
|
---|
1796 | }
|
---|
1797 |
|
---|
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;
|
---|
1803 |
|
---|
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 |
|
---|
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;
|
---|
1947 | info->total = XNTOHS(iphdr->length) + info->length;
|
---|
1948 | /* IPv6 doesn't include its own header size in the length like v4. */
|
---|
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 | {
|
---|
1963 | int version = IP_V(iphdr);
|
---|
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);
|
---|
1989 | info->total = XNTOHS(iphdr->length);
|
---|
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);
|
---|
2008 | info->srcPort = XNTOHS(tcphdr->srcPort);
|
---|
2009 | info->dstPort = XNTOHS(tcphdr->dstPort);
|
---|
2010 | info->length = TCP_LEN(tcphdr);
|
---|
2011 | info->sequence = XNTOHL(tcphdr->sequence);
|
---|
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)
|
---|
2017 | info->ackNumber = XNTOHL(tcphdr->ack);
|
---|
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;
|
---|
2072 | #ifdef HAVE_SNI
|
---|
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 | }
|
---|
2079 | #endif
|
---|
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 |
|
---|
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 | }
|
---|
2106 |
|
---|
2107 | static void ShowTlsSecrets(SnifferSession* session)
|
---|
2108 | {
|
---|
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 | {
|
---|
2135 | word32 idx = 0;
|
---|
2136 | int ret;
|
---|
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
|
---|
2143 |
|
---|
2144 | #ifndef NO_RSA
|
---|
2145 | /* Static RSA */
|
---|
2146 | if (ksInfo == NULL && keys->rsaKey) {
|
---|
2147 | RsaKey key;
|
---|
2148 | int length;
|
---|
2149 |
|
---|
2150 | keyBuf = keys->rsaKey;
|
---|
2151 |
|
---|
2152 | ret = wc_InitRsaKey(&key, 0);
|
---|
2153 | if (ret == 0) {
|
---|
2154 | ret = wc_RsaPrivateKeyDecode(keyBuf->buffer, &idx, &key, keyBuf->length);
|
---|
2155 | if (ret != 0) {
|
---|
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
|
---|
2165 | }
|
---|
2166 | #ifdef HAVE_ECC
|
---|
2167 | else {
|
---|
2168 | useEccCurveId = -1; /* don't try loading ECC */
|
---|
2169 | }
|
---|
2170 | #endif
|
---|
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 | }
|
---|
2218 | #endif /* !NO_RSA */
|
---|
2219 |
|
---|
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 |
|
---|
2310 | #ifdef HAVE_ECC
|
---|
2311 | /* Static ECC Key */
|
---|
2312 | if (useEccCurveId >= ECC_CURVE_DEF && keys->ecKey) {
|
---|
2313 | ecc_key key;
|
---|
2314 | ecc_key pubKey;
|
---|
2315 | int length, keyInit = 0, pubKeyInit = 0;
|
---|
2316 |
|
---|
2317 | keyBuf = keys->ecKey;
|
---|
2318 | idx = 0;
|
---|
2319 | ret = wc_ecc_init(&key);
|
---|
2320 | if (ret == 0) {
|
---|
2321 | keyInit = 1;
|
---|
2322 | ret = wc_ecc_init(&pubKey);
|
---|
2323 | }
|
---|
2324 |
|
---|
2325 | #if defined(ECC_TIMING_RESISTANT) && (!defined(HAVE_FIPS) || \
|
---|
2326 | (!defined(HAVE_FIPS_VERSION) || (HAVE_FIPS_VERSION != 2))) && \
|
---|
2327 | !defined(HAVE_SELFTEST)
|
---|
2328 | if (ret == 0) {
|
---|
2329 | ret = wc_ecc_set_rng(&key, session->sslServer->rng);
|
---|
2330 | }
|
---|
2331 | #endif
|
---|
2332 |
|
---|
2333 | if (ret == 0) {
|
---|
2334 | pubKeyInit = 1;
|
---|
2335 | ret = wc_EccPrivateKeyDecode(keyBuf->buffer, &idx, &key, keyBuf->length);
|
---|
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. */
|
---|
2345 | if (!IsAtLeastTLSv1_3(session->sslServer->version)) {
|
---|
2346 | input += 1; /* Don't include the TLS length for the key. */
|
---|
2347 | }
|
---|
2348 |
|
---|
2349 | if (length > *sslBytes) {
|
---|
2350 | SetError(PARTIAL_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
2351 | ret = -1;
|
---|
2352 | }
|
---|
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 | }
|
---|
2358 | }
|
---|
2359 |
|
---|
2360 | if (ret == 0) {
|
---|
2361 | ret = wc_ecc_import_x963_ex(input, length, &pubKey, useEccCurveId);
|
---|
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 | }
|
---|
2397 | #endif /* HAVE_ECC */
|
---|
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 |
|
---|
2406 | #ifdef SHOW_SECRETS
|
---|
2407 | PrintSecret("pre master secret",
|
---|
2408 | session->sslServer->arrays->preMasterSecret,
|
---|
2409 | session->sslServer->arrays->preMasterSz);
|
---|
2410 | #endif
|
---|
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 |
|
---|
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 | }
|
---|
2447 | if (ret != 0) {
|
---|
2448 | SetError(BAD_DERIVE_STR, error, session, FATAL_ERROR_STATE);
|
---|
2449 | return -1;
|
---|
2450 | }
|
---|
2451 |
|
---|
2452 | #ifdef SHOW_SECRETS
|
---|
2453 | #ifdef WOLFSSL_TLS13
|
---|
2454 | if (!IsAtLeastTLSv1_3(session->sslServer->version))
|
---|
2455 | #endif
|
---|
2456 | ShowTlsSecrets(session);
|
---|
2457 | #endif
|
---|
2458 |
|
---|
2459 | CallConnectionCb(session);
|
---|
2460 |
|
---|
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;
|
---|
2476 | }
|
---|
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
|
---|
2486 | #endif
|
---|
2487 | keys.rsaKey = session->sslServer->buffers.key;
|
---|
2488 | return SetupKeys(input, sslBytes, session, error, NULL, &keys);
|
---|
2489 | }
|
---|
2490 |
|
---|
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));
|
---|
2499 |
|
---|
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 */
|
---|
2587 | }
|
---|
2588 |
|
---|
2589 | static int ProcessServerKeyShare(SnifferSession* session, const byte* input, int len,
|
---|
2590 | char* error)
|
---|
2591 | {
|
---|
2592 | int ret;
|
---|
2593 |
|
---|
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 |
|
---|
2616 | /* Process Session Ticket */
|
---|
2617 | static int ProcessSessionTicket(const byte* input, int* sslBytes,
|
---|
2618 | SnifferSession* session, char* error)
|
---|
2619 | {
|
---|
2620 | word16 len;
|
---|
2621 |
|
---|
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) {
|
---|
2633 | SetError(BAD_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
2634 | return -1;
|
---|
2635 | }
|
---|
2636 | input += TICKET_HINT_LEN; /* skip over hint len */
|
---|
2637 | *sslBytes -= TICKET_HINT_LEN;
|
---|
2638 |
|
---|
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 |
|
---|
2675 | len = (word16)((input[0] << 8) | input[1]);
|
---|
2676 | input += OPAQUE16_LEN;
|
---|
2677 | *sslBytes -= OPAQUE16_LEN;
|
---|
2678 |
|
---|
2679 | /* make sure can read through ticket */
|
---|
2680 | if (len > *sslBytes) {
|
---|
2681 | SetError(BAD_INPUT_STR, error, session, FATAL_ERROR_STATE);
|
---|
2682 | return -1;
|
---|
2683 | }
|
---|
2684 |
|
---|
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;
|
---|
2695 |
|
---|
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 |
|
---|
2723 | return 0;
|
---|
2724 | }
|
---|
2725 |
|
---|
2726 | static int DoResume(SnifferSession* session, char* error)
|
---|
2727 | {
|
---|
2728 | int ret = 0;
|
---|
2729 | WOLFSSL_SESSION* resume;
|
---|
2730 |
|
---|
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 |
|
---|
2819 | /* Process Server Hello */
|
---|
2820 | static int ProcessServerHello(int msgSz, const byte* input, int* sslBytes,
|
---|
2821 | SnifferSession* session, char* error)
|
---|
2822 | {
|
---|
2823 | int ret = 0;
|
---|
2824 | ProtocolVersion pv;
|
---|
2825 | byte b, b0;
|
---|
2826 | int toRead = VERSION_SZ + RAN_LEN + ENUM_LEN;
|
---|
2827 | int doResume = 0;
|
---|
2828 | const byte* inputHello = input;
|
---|
2829 | int initialBytes = *sslBytes;
|
---|
2830 |
|
---|
2831 | (void)msgSz;
|
---|
2832 |
|
---|
2833 | /* make sure we didn't miss ClientHello */
|
---|
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 */
|
---|
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;
|
---|
2851 | if (pv.minor >= TLSv1_MINOR) {
|
---|
2852 | session->sslServer->options.tls = 1;
|
---|
2853 | session->sslClient->options.tls = 1;
|
---|
2854 | }
|
---|
2855 |
|
---|
2856 | XMEMCPY(session->sslServer->arrays->serverRandom, input, RAN_LEN);
|
---|
2857 | XMEMCPY(session->sslClient->arrays->serverRandom, input, RAN_LEN);
|
---|
2858 | input += RAN_LEN;
|
---|
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) {
|
---|
2870 | #ifdef WOLFSSL_TLS13
|
---|
2871 | XMEMCPY(session->sslServer->session.sessionID, input, ID_LEN);
|
---|
2872 | #endif
|
---|
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) {
|
---|
2936 | word16 extType;
|
---|
2937 | word16 extLen;
|
---|
2938 |
|
---|
2939 | extType = (word16)((input[0] << 8) | input[1]);
|
---|
2940 | input += EXT_TYPE_SZ;
|
---|
2941 | *sslBytes -= EXT_TYPE_SZ;
|
---|
2942 |
|
---|
2943 | extLen = (word16)((input[0] << 8) | input[1]);
|
---|
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 |
|
---|
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
|
---|
3009 | session->flags.expectEms = 1;
|
---|
3010 | #endif
|
---|
3011 | break;
|
---|
3012 | }
|
---|
3013 |
|
---|
3014 | input += extLen;
|
---|
3015 | *sslBytes -= extLen;
|
---|
3016 | len -= extLen + EXT_TYPE_SZ + LENGTH_SZ;
|
---|
3017 | }
|
---|
3018 | }
|
---|
3019 |
|
---|
3020 | #ifdef HAVE_EXTENDED_MASTER
|
---|
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,
|
---|
3029 | session->sslClient->arrays->sessionID, ID_LEN) == 0) {
|
---|
3030 | doResume = 1;
|
---|
3031 | }
|
---|
3032 | }
|
---|
3033 | else if (session->sslClient->options.haveSessionId == 0 &&
|
---|
3034 | session->sslServer->options.haveSessionId == 0 &&
|
---|
3035 | session->ticketID) {
|
---|
3036 | doResume = 1;
|
---|
3037 | }
|
---|
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 |
|
---|
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);
|
---|
3050 |
|
---|
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 | }
|
---|
3064 | #endif
|
---|
3065 |
|
---|
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);
|
---|
3071 |
|
---|
3072 | if (doResume) {
|
---|
3073 | ret = DoResume(session, error);
|
---|
3074 | if (ret != 0) {
|
---|
3075 | return ret;
|
---|
3076 | }
|
---|
3077 | }
|
---|
3078 | else {
|
---|
3079 | #ifdef WOLFSSL_SNIFFER_STATS
|
---|
3080 | INC_STAT(SnifferStats.sslStandardConns);
|
---|
3081 | #endif
|
---|
3082 | }
|
---|
3083 |
|
---|
3084 | #ifdef SHOW_SECRETS
|
---|
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;
|
---|
3114 | }
|
---|
3115 | #endif
|
---|
3116 |
|
---|
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 | {
|
---|
3125 | int ret = 0;
|
---|
3126 | byte bLen;
|
---|
3127 | word16 len;
|
---|
3128 | int toRead = VERSION_SZ + RAN_LEN + ENUM_LEN;
|
---|
3129 | const byte* inputHello = input;
|
---|
3130 | int inputHelloSz = *sslBytes;
|
---|
3131 | WOLFSSL* ssl = session->sslServer;
|
---|
3132 | int didHash = 0;
|
---|
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) {
|
---|
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) {
|
---|
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 | }
|
---|
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 | }
|
---|
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);
|
---|
3220 | #ifdef WOLFSSL_TLS13
|
---|
3221 | XMEMCPY(session->sslClient->session.sessionID, input, ID_LEN);
|
---|
3222 | #endif
|
---|
3223 | XMEMCPY(session->sslClient->arrays->sessionID, input, ID_LEN);
|
---|
3224 | session->sslClient->options.haveSessionId = 1;
|
---|
3225 | }
|
---|
3226 |
|
---|
3227 | #ifdef SHOW_SECRETS
|
---|
3228 | PrintSecret("client random", ssl->arrays->clientRandom, RAN_LEN);
|
---|
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) {
|
---|
3283 | word16 extType;
|
---|
3284 | word16 extLen;
|
---|
3285 |
|
---|
3286 | extType = (word16)((input[0] << 8) | input[1]);
|
---|
3287 | input += EXT_TYPE_SZ;
|
---|
3288 | *sslBytes -= EXT_TYPE_SZ;
|
---|
3289 |
|
---|
3290 | extLen = (word16)((input[0] << 8) | input[1]);
|
---|
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 |
|
---|
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;
|
---|
3325 |
|
---|
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:
|
---|
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) {
|
---|
3391 | if (session->ticketID == NULL) {
|
---|
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 | }
|
---|
3402 | break;
|
---|
3403 | }
|
---|
3404 |
|
---|
3405 | input += extLen;
|
---|
3406 | *sslBytes -= extLen;
|
---|
3407 | len -= extLen + EXT_TYPE_SZ + LENGTH_SZ;
|
---|
3408 | }
|
---|
3409 |
|
---|
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;
|
---|
3420 | }
|
---|
3421 |
|
---|
3422 |
|
---|
3423 | #ifdef WOLFSSL_SNIFFER_WATCH
|
---|
3424 |
|
---|
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 |
|
---|
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 | }
|
---|
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 |
|
---|
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 |
|
---|
3507 | return KeyWatchCall(session, input, certSz, error);
|
---|
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 | {
|
---|
3517 | WOLFSSL* ssl;
|
---|
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 |
|
---|
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 | }
|
---|
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 |
|
---|
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 |
|
---|
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,
|
---|
3629 | SnifferSession* session, char* error, word16 rhSize)
|
---|
3630 | {
|
---|
3631 | byte type;
|
---|
3632 | int size;
|
---|
3633 | int ret = 0;
|
---|
3634 | WOLFSSL* ssl;
|
---|
3635 | int startBytes;
|
---|
3636 |
|
---|
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 |
|
---|
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 |
|
---|
3673 | if (session->flags.side == WOLFSSL_SERVER_END)
|
---|
3674 | ssl = session->sslServer;
|
---|
3675 | else
|
---|
3676 | ssl = session->sslClient;
|
---|
3677 |
|
---|
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 | }
|
---|
3687 | }
|
---|
3688 | #endif
|
---|
3689 |
|
---|
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
|
---|
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);
|
---|
3731 | ret = -1;
|
---|
3732 | goto exit;
|
---|
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;
|
---|
3764 | case encrypted_extensions:
|
---|
3765 | Trace(GOT_ENC_EXT_STR);
|
---|
3766 | ssl->msgsReceived.got_encrypted_extensions = 1;
|
---|
3767 | break;
|
---|
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);
|
---|
3827 | ret = -1;
|
---|
3828 | break;
|
---|
3829 | }
|
---|
3830 |
|
---|
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 |
|
---|
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 */
|
---|
3848 | static int Decrypt(WOLFSSL* ssl, byte* output, const byte* input, word32 sz)
|
---|
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 |
|
---|
3899 | #if defined(HAVE_AESGCM) || defined(HAVE_AESCCM)
|
---|
3900 | case wolfssl_aes_gcm:
|
---|
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;
|
---|
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 |
|
---|
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,
|
---|
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;
|
---|
3936 | #endif
|
---|
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 */
|
---|
3955 | static const byte* DecryptMessage(WOLFSSL* ssl, const byte* input, word32 sz,
|
---|
3956 | byte* output, int* error, int* advance, RecordLayerHeader* rh)
|
---|
3957 | {
|
---|
3958 | int ivExtra = 0;
|
---|
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 | }
|
---|
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) {
|
---|
3976 | output += ssl->specs.block_size; /* go past TLSv1.1 IV */
|
---|
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 |
|
---|
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 |
|
---|
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;
|
---|
4061 | if (XTIME(NULL) >= session->lastUsed + WOLFSSL_SNIFFER_TIMEOUT) {
|
---|
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 */
|
---|
4110 | session->lastUsed= XTIME(NULL);
|
---|
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 |
|
---|
4123 | session->sslServer = wolfSSL_new(session->context->ctx);
|
---|
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 | }
|
---|
4129 | session->sslClient = wolfSSL_new(session->context->ctx);
|
---|
4130 | if (session->sslClient == NULL) {
|
---|
4131 | wolfSSL_free(session->sslServer);
|
---|
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 | {
|
---|
4270 | IpHdr* iphdr = (IpHdr*)packet;
|
---|
4271 | int version;
|
---|
4272 |
|
---|
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 | }
|
---|
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 |
|
---|
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 | }
|
---|
4309 |
|
---|
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) {
|
---|
4505 | if (session->finCapture.cliCounted == 0)
|
---|
4506 | session->finCapture.cliFinSeq = sequence;
|
---|
4507 | }
|
---|
4508 | else {
|
---|
4509 | if (session->finCapture.srvCounted == 0)
|
---|
4510 | session->finCapture.srvFinSeq = sequence;
|
---|
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;
|
---|
4646 | WOLFSSL* ssl = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
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;
|
---|
4722 | word32 seqStart = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
4723 | session->srvSeqStart : session->cliSeqStart;
|
---|
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 |
|
---|
4731 | if (tcpInfo->ackNumber < seqStart) {
|
---|
4732 | return -1; /* do not fix sequence - could be ack on unseen seq */
|
---|
4733 | }
|
---|
4734 | *skipPartial = 1;
|
---|
4735 |
|
---|
4736 | if (list != NULL)
|
---|
4737 | *expected = list->begin;
|
---|
4738 | else
|
---|
4739 | *expected = tcpInfo->ackNumber - seqStart;
|
---|
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 |
|
---|
4781 | /* init SEQ from server to client - if not ack fault */
|
---|
4782 | if (tcpInfo->syn && tcpInfo->ack && !*ackFault) {
|
---|
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;
|
---|
4829 | WOLFSSL* ssl = ((*session)->flags.side == WOLFSSL_SERVER_END) ?
|
---|
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);
|
---|
4893 | headerSz = (word32)((const byte*)*sslFrame - (const byte*)chain[0].iov_base);
|
---|
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 */
|
---|
4968 | word32* length = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
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;
|
---|
4974 | word32* bufferSize = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
4975 | &session->sslServer->buffers.inputBuffer.bufferSize :
|
---|
4976 | &session->sslClient->buffers.inputBuffer.bufferSize;
|
---|
4977 | WOLFSSL* ssl = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
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 */
|
---|
5039 | WOLFSSL* ssl = (session->flags.side == WOLFSSL_SERVER_END) ?
|
---|
5040 | session->sslServer : session->sslClient;
|
---|
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 */
|
---|
5086 |
|
---|
5087 | /* change_cipher_spec is not encrypted */
|
---|
5088 | if (rh.type == change_cipher_spec) {
|
---|
5089 | goto doPart;
|
---|
5090 | }
|
---|
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 | }
|
---|
5099 |
|
---|
5100 | sslFrame = DecryptMessage(ssl, sslFrame, rhSize,
|
---|
5101 | ssl->buffers.outputBuffer.buffer, &errCode,
|
---|
5102 | &ivAdvance, &rh);
|
---|
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);
|
---|
5133 | ret = DoHandShake(sslFrame, &sslBytes, session, error, rhSize);
|
---|
5134 | if (ret != 0 || sslBytes > startIdx) {
|
---|
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:
|
---|
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 | }
|
---|
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;
|
---|
5296 | if (session->finCapture.cliFinSeq && session->finCapture.cliFinSeq <=
|
---|
5297 | session->cliExpected) {
|
---|
5298 | if (session->finCapture.cliCounted == 0) {
|
---|
5299 | session->flags.finCount += 1;
|
---|
5300 | session->finCapture.cliCounted = 1;
|
---|
5301 | TraceClientFin(session->finCapture.cliFinSeq, session->cliExpected);
|
---|
5302 | }
|
---|
5303 | }
|
---|
5304 |
|
---|
5305 | if (session->finCapture.srvFinSeq && session->finCapture.srvFinSeq <=
|
---|
5306 | session->srvExpected) {
|
---|
5307 | if (session->finCapture.srvCounted == 0) {
|
---|
5308 | session->flags.finCount += 1;
|
---|
5309 | session->finCapture.srvCounted = 1;
|
---|
5310 | TraceServerFin(session->finCapture.srvFinSeq, session->srvExpected);
|
---|
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 |
|
---|
5731 | ret = LoadKeyFile(&keyBuf, &keyBufSz, keyFile, 0, keyType, password);
|
---|
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 */
|
---|