[388] | 1 | /***************************************************************************
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| 2 | * _ _ ____ _
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| 3 | * Project ___| | | | _ \| |
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| 4 | * / __| | | | |_) | |
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| 5 | * | (__| |_| | _ <| |___
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| 6 | * \___|\___/|_| \_\_____|
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| 7 | *
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| 8 | * Copyright (C) 2010 - 2011, Hoi-Ho Chan, <hoiho.chan@gmail.com>
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| 9 | * Copyright (C) 2012 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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| 10 | *
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| 11 | * This software is licensed as described in the file COPYING, which
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| 12 | * you should have received as part of this distribution. The terms
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| 13 | * are also available at https://curl.haxx.se/docs/copyright.html.
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| 14 | *
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| 15 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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| 16 | * copies of the Software, and permit persons to whom the Software is
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| 17 | * furnished to do so, under the terms of the COPYING file.
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| 18 | *
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| 19 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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| 20 | * KIND, either express or implied.
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| 21 | *
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| 22 | ***************************************************************************/
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| 23 |
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| 24 | /*
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| 25 | * Source file for all mbedTLS-specific code for the TLS/SSL layer. No code
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| 26 | * but vtls.c should ever call or use these functions.
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| 27 | *
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| 28 | */
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| 29 |
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| 30 | #include "curl_setup.h"
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| 31 |
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| 32 | #ifdef USE_MBEDTLS
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| 33 |
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| 34 | #include <mbedtls/version.h>
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| 35 | #if MBEDTLS_VERSION_NUMBER >= 0x02040000
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| 36 | #include <mbedtls/net_sockets.h>
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| 37 | #else
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| 38 | #include <mbedtls/net.h>
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| 39 | #endif
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| 40 | #include <mbedtls/ssl.h>
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| 41 | #include <mbedtls/certs.h>
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| 42 | #include <mbedtls/x509.h>
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| 43 |
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| 44 | #include <mbedtls/error.h>
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| 45 | #include <mbedtls/entropy.h>
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| 46 | #include <mbedtls/ctr_drbg.h>
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| 47 | #include <mbedtls/sha256.h>
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| 48 |
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| 49 | #include "urldata.h"
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| 50 | #include "sendf.h"
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| 51 | #include "inet_pton.h"
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| 52 | #include "mbedtls.h"
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| 53 | #include "vtls.h"
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| 54 | #include "parsedate.h"
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| 55 | #include "connect.h" /* for the connect timeout */
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| 56 | #include "select.h"
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| 57 | #include "polarssl_threadlock.h"
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| 58 |
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| 59 | /* The last 3 #include files should be in this order */
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| 60 | #include "curl_printf.h"
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| 61 | #include "curl_memory.h"
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| 62 | #include "memdebug.h"
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| 63 |
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| 64 | struct ssl_backend_data {
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| 65 | mbedtls_ctr_drbg_context ctr_drbg;
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| 66 | mbedtls_entropy_context entropy;
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| 67 | mbedtls_ssl_context ssl;
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| 68 | int server_fd;
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| 69 | mbedtls_x509_crt cacert;
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| 70 | mbedtls_x509_crt clicert;
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| 71 | mbedtls_x509_crl crl;
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| 72 | mbedtls_pk_context pk;
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| 73 | mbedtls_ssl_config config;
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| 74 | const char *protocols[3];
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| 75 | };
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| 76 |
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| 77 | #define BACKEND connssl->backend
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| 78 |
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| 79 | /* apply threading? */
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| 80 | #if defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32)
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| 81 | #define THREADING_SUPPORT
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| 82 | #endif
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| 83 |
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| 84 | #if defined(THREADING_SUPPORT)
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| 85 | static mbedtls_entropy_context ts_entropy;
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| 86 |
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| 87 | static int entropy_init_initialized = 0;
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| 88 |
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| 89 | /* start of entropy_init_mutex() */
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| 90 | static void entropy_init_mutex(mbedtls_entropy_context *ctx)
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| 91 | {
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| 92 | /* lock 0 = entropy_init_mutex() */
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| 93 | Curl_polarsslthreadlock_lock_function(0);
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| 94 | if(entropy_init_initialized == 0) {
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| 95 | mbedtls_entropy_init(ctx);
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| 96 | entropy_init_initialized = 1;
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| 97 | }
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| 98 | Curl_polarsslthreadlock_unlock_function(0);
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| 99 | }
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| 100 | /* end of entropy_init_mutex() */
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| 101 |
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| 102 | /* start of entropy_func_mutex() */
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| 103 | static int entropy_func_mutex(void *data, unsigned char *output, size_t len)
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| 104 | {
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| 105 | int ret;
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| 106 | /* lock 1 = entropy_func_mutex() */
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| 107 | Curl_polarsslthreadlock_lock_function(1);
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| 108 | ret = mbedtls_entropy_func(data, output, len);
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| 109 | Curl_polarsslthreadlock_unlock_function(1);
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| 110 |
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| 111 | return ret;
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| 112 | }
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| 113 | /* end of entropy_func_mutex() */
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| 114 |
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| 115 | #endif /* THREADING_SUPPORT */
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| 116 |
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| 117 | /* Define this to enable lots of debugging for mbedTLS */
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| 118 | #undef MBEDTLS_DEBUG
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| 119 |
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| 120 | #ifdef MBEDTLS_DEBUG
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| 121 | static void mbed_debug(void *context, int level, const char *f_name,
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| 122 | int line_nb, const char *line)
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| 123 | {
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| 124 | struct Curl_easy *data = NULL;
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| 125 |
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| 126 | if(!context)
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| 127 | return;
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| 128 |
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| 129 | data = (struct Curl_easy *)context;
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| 130 |
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| 131 | infof(data, "%s", line);
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| 132 | (void) level;
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| 133 | }
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| 134 | #else
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| 135 | #endif
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| 136 |
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| 137 | /* ALPN for http2? */
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| 138 | #ifdef USE_NGHTTP2
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| 139 | # undef HAS_ALPN
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| 140 | # ifdef MBEDTLS_SSL_ALPN
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| 141 | # define HAS_ALPN
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| 142 | # endif
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| 143 | #endif
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| 144 |
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| 145 |
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| 146 | /*
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| 147 | * profile
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| 148 | */
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| 149 | static const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_fr =
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| 150 | {
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| 151 | /* Hashes from SHA-1 and above */
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| 152 | MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_SHA1) |
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| 153 | MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_RIPEMD160) |
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| 154 | MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_SHA224) |
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| 155 | MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_SHA256) |
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| 156 | MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_SHA384) |
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| 157 | MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_SHA512),
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| 158 | 0xFFFFFFF, /* Any PK alg */
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| 159 | 0xFFFFFFF, /* Any curve */
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| 160 | 1024, /* RSA min key len */
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| 161 | };
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| 162 |
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| 163 | /* See https://tls.mbed.org/discussions/generic/
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| 164 | howto-determine-exact-buffer-len-for-mbedtls_pk_write_pubkey_der
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| 165 | */
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| 166 | #define RSA_PUB_DER_MAX_BYTES (38 + 2 * MBEDTLS_MPI_MAX_SIZE)
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| 167 | #define ECP_PUB_DER_MAX_BYTES (30 + 2 * MBEDTLS_ECP_MAX_BYTES)
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| 168 |
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| 169 | #define PUB_DER_MAX_BYTES (RSA_PUB_DER_MAX_BYTES > ECP_PUB_DER_MAX_BYTES ? \
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| 170 | RSA_PUB_DER_MAX_BYTES : ECP_PUB_DER_MAX_BYTES)
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| 171 |
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| 172 | static Curl_recv mbed_recv;
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| 173 | static Curl_send mbed_send;
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| 174 |
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| 175 | static CURLcode mbedtls_version_from_curl(int *mbedver, long version)
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| 176 | {
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| 177 | switch(version) {
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| 178 | case CURL_SSLVERSION_TLSv1_0:
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| 179 | *mbedver = MBEDTLS_SSL_MINOR_VERSION_1;
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| 180 | return CURLE_OK;
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| 181 | case CURL_SSLVERSION_TLSv1_1:
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| 182 | *mbedver = MBEDTLS_SSL_MINOR_VERSION_2;
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| 183 | return CURLE_OK;
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| 184 | case CURL_SSLVERSION_TLSv1_2:
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| 185 | *mbedver = MBEDTLS_SSL_MINOR_VERSION_3;
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| 186 | return CURLE_OK;
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| 187 | case CURL_SSLVERSION_TLSv1_3:
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| 188 | break;
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| 189 | }
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| 190 | return CURLE_SSL_CONNECT_ERROR;
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| 191 | }
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| 192 |
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| 193 | static CURLcode
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| 194 | set_ssl_version_min_max(struct connectdata *conn, int sockindex)
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| 195 | {
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| 196 | struct Curl_easy *data = conn->data;
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| 197 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
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| 198 | int mbedtls_ver_min = MBEDTLS_SSL_MINOR_VERSION_1;
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| 199 | int mbedtls_ver_max = MBEDTLS_SSL_MINOR_VERSION_1;
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| 200 | long ssl_version = SSL_CONN_CONFIG(version);
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| 201 | long ssl_version_max = SSL_CONN_CONFIG(version_max);
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| 202 | CURLcode result = CURLE_OK;
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| 203 |
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| 204 | switch(ssl_version) {
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| 205 | case CURL_SSLVERSION_DEFAULT:
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| 206 | case CURL_SSLVERSION_TLSv1:
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| 207 | ssl_version = CURL_SSLVERSION_TLSv1_0;
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| 208 | ssl_version_max = CURL_SSLVERSION_MAX_TLSv1_2;
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| 209 | break;
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| 210 | }
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| 211 |
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| 212 | switch(ssl_version_max) {
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| 213 | case CURL_SSLVERSION_MAX_NONE:
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| 214 | ssl_version_max = ssl_version << 16;
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| 215 | break;
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| 216 | case CURL_SSLVERSION_MAX_DEFAULT:
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| 217 | ssl_version_max = CURL_SSLVERSION_MAX_TLSv1_2;
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| 218 | break;
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| 219 | }
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| 220 |
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| 221 | result = mbedtls_version_from_curl(&mbedtls_ver_min, ssl_version);
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| 222 | if(result) {
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| 223 | failf(data, "unsupported min version passed via CURLOPT_SSLVERSION");
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| 224 | return result;
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| 225 | }
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| 226 | result = mbedtls_version_from_curl(&mbedtls_ver_max, ssl_version_max >> 16);
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| 227 | if(result) {
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| 228 | failf(data, "unsupported max version passed via CURLOPT_SSLVERSION");
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| 229 | return result;
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| 230 | }
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| 231 |
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| 232 | mbedtls_ssl_conf_min_version(&BACKEND->config, MBEDTLS_SSL_MAJOR_VERSION_3,
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| 233 | mbedtls_ver_min);
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| 234 | mbedtls_ssl_conf_max_version(&BACKEND->config, MBEDTLS_SSL_MAJOR_VERSION_3,
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| 235 | mbedtls_ver_max);
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| 236 |
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| 237 | return result;
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| 238 | }
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| 239 |
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| 240 | static CURLcode
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| 241 | mbed_connect_step1(struct connectdata *conn,
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| 242 | int sockindex)
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| 243 | {
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| 244 | struct Curl_easy *data = conn->data;
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| 245 | struct ssl_connect_data* connssl = &conn->ssl[sockindex];
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| 246 | const char * const ssl_cafile = SSL_CONN_CONFIG(CAfile);
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| 247 | const bool verifypeer = SSL_CONN_CONFIG(verifypeer);
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| 248 | const char * const ssl_capath = SSL_CONN_CONFIG(CApath);
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| 249 | char * const ssl_cert = SSL_SET_OPTION(cert);
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| 250 | const char * const ssl_crlfile = SSL_SET_OPTION(CRLfile);
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| 251 | const char * const hostname = SSL_IS_PROXY() ? conn->http_proxy.host.name :
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| 252 | conn->host.name;
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| 253 | const long int port = SSL_IS_PROXY() ? conn->port : conn->remote_port;
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| 254 | int ret = -1;
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| 255 | char errorbuf[128];
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| 256 | errorbuf[0] = 0;
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| 257 |
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| 258 | /* mbedTLS only supports SSLv3 and TLSv1 */
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| 259 | if(SSL_CONN_CONFIG(version) == CURL_SSLVERSION_SSLv2) {
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| 260 | failf(data, "mbedTLS does not support SSLv2");
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| 261 | return CURLE_SSL_CONNECT_ERROR;
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| 262 | }
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| 263 |
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| 264 | #ifdef THREADING_SUPPORT
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| 265 | entropy_init_mutex(&ts_entropy);
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| 266 | mbedtls_ctr_drbg_init(&BACKEND->ctr_drbg);
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| 267 |
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| 268 | ret = mbedtls_ctr_drbg_seed(&BACKEND->ctr_drbg, entropy_func_mutex,
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| 269 | &ts_entropy, NULL, 0);
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| 270 | if(ret) {
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| 271 | #ifdef MBEDTLS_ERROR_C
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| 272 | mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
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| 273 | #endif /* MBEDTLS_ERROR_C */
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| 274 | failf(data, "Failed - mbedTLS: ctr_drbg_init returned (-0x%04X) %s\n",
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| 275 | -ret, errorbuf);
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| 276 | }
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| 277 | #else
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| 278 | mbedtls_entropy_init(&BACKEND->entropy);
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| 279 | mbedtls_ctr_drbg_init(&BACKEND->ctr_drbg);
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| 280 |
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| 281 | ret = mbedtls_ctr_drbg_seed(&BACKEND->ctr_drbg, mbedtls_entropy_func,
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| 282 | &BACKEND->entropy, NULL, 0);
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| 283 | if(ret) {
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| 284 | #ifdef MBEDTLS_ERROR_C
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| 285 | mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
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| 286 | #endif /* MBEDTLS_ERROR_C */
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| 287 | failf(data, "Failed - mbedTLS: ctr_drbg_init returned (-0x%04X) %s\n",
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| 288 | -ret, errorbuf);
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| 289 | }
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| 290 | #endif /* THREADING_SUPPORT */
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| 291 |
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| 292 | /* Load the trusted CA */
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| 293 | mbedtls_x509_crt_init(&BACKEND->cacert);
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| 294 |
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| 295 | if(ssl_cafile) {
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| 296 | ret = mbedtls_x509_crt_parse_file(&BACKEND->cacert, ssl_cafile);
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| 297 |
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| 298 | if(ret<0) {
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| 299 | #ifdef MBEDTLS_ERROR_C
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| 300 | mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
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| 301 | #endif /* MBEDTLS_ERROR_C */
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| 302 | failf(data, "Error reading ca cert file %s - mbedTLS: (-0x%04X) %s",
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| 303 | ssl_cafile, -ret, errorbuf);
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| 304 |
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| 305 | if(verifypeer)
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| 306 | return CURLE_SSL_CACERT_BADFILE;
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| 307 | }
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| 308 | }
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| 309 |
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| 310 | if(ssl_capath) {
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| 311 | ret = mbedtls_x509_crt_parse_path(&BACKEND->cacert, ssl_capath);
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| 312 |
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| 313 | if(ret<0) {
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| 314 | #ifdef MBEDTLS_ERROR_C
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| 315 | mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
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| 316 | #endif /* MBEDTLS_ERROR_C */
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| 317 | failf(data, "Error reading ca cert path %s - mbedTLS: (-0x%04X) %s",
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| 318 | ssl_capath, -ret, errorbuf);
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| 319 |
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| 320 | if(verifypeer)
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| 321 | return CURLE_SSL_CACERT_BADFILE;
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| 322 | }
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| 323 | }
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| 324 |
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| 325 | /* Load the client certificate */
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| 326 | mbedtls_x509_crt_init(&BACKEND->clicert);
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| 327 |
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| 328 | if(ssl_cert) {
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| 329 | ret = mbedtls_x509_crt_parse_file(&BACKEND->clicert, ssl_cert);
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| 330 |
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| 331 | if(ret) {
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| 332 | #ifdef MBEDTLS_ERROR_C
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| 333 | mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
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| 334 | #endif /* MBEDTLS_ERROR_C */
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| 335 | failf(data, "Error reading client cert file %s - mbedTLS: (-0x%04X) %s",
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| 336 | ssl_cert, -ret, errorbuf);
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| 337 |
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| 338 | return CURLE_SSL_CERTPROBLEM;
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| 339 | }
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| 340 | }
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| 341 |
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| 342 | /* Load the client private key */
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| 343 | mbedtls_pk_init(&BACKEND->pk);
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| 344 |
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| 345 | if(SSL_SET_OPTION(key)) {
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| 346 | ret = mbedtls_pk_parse_keyfile(&BACKEND->pk, SSL_SET_OPTION(key),
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| 347 | SSL_SET_OPTION(key_passwd));
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| 348 | if(ret == 0 && !mbedtls_pk_can_do(&BACKEND->pk, MBEDTLS_PK_RSA))
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| 349 | ret = MBEDTLS_ERR_PK_TYPE_MISMATCH;
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| 350 |
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| 351 | if(ret) {
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| 352 | #ifdef MBEDTLS_ERROR_C
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| 353 | mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
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| 354 | #endif /* MBEDTLS_ERROR_C */
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| 355 | failf(data, "Error reading private key %s - mbedTLS: (-0x%04X) %s",
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| 356 | SSL_SET_OPTION(key), -ret, errorbuf);
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| 357 |
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| 358 | return CURLE_SSL_CERTPROBLEM;
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| 359 | }
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| 360 | }
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| 361 |
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| 362 | /* Load the CRL */
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| 363 | mbedtls_x509_crl_init(&BACKEND->crl);
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| 364 |
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| 365 | if(ssl_crlfile) {
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| 366 | ret = mbedtls_x509_crl_parse_file(&BACKEND->crl, ssl_crlfile);
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| 367 |
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| 368 | if(ret) {
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| 369 | #ifdef MBEDTLS_ERROR_C
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| 370 | mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
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| 371 | #endif /* MBEDTLS_ERROR_C */
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| 372 | failf(data, "Error reading CRL file %s - mbedTLS: (-0x%04X) %s",
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| 373 | ssl_crlfile, -ret, errorbuf);
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| 374 |
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| 375 | return CURLE_SSL_CRL_BADFILE;
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| 376 | }
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| 377 | }
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| 378 |
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| 379 | infof(data, "mbedTLS: Connecting to %s:%d\n", hostname, port);
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| 380 |
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| 381 | mbedtls_ssl_config_init(&BACKEND->config);
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| 382 |
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| 383 | mbedtls_ssl_init(&BACKEND->ssl);
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| 384 | if(mbedtls_ssl_setup(&BACKEND->ssl, &BACKEND->config)) {
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| 385 | failf(data, "mbedTLS: ssl_init failed");
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| 386 | return CURLE_SSL_CONNECT_ERROR;
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| 387 | }
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| 388 | ret = mbedtls_ssl_config_defaults(&BACKEND->config,
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| 389 | MBEDTLS_SSL_IS_CLIENT,
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| 390 | MBEDTLS_SSL_TRANSPORT_STREAM,
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| 391 | MBEDTLS_SSL_PRESET_DEFAULT);
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| 392 | if(ret) {
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| 393 | failf(data, "mbedTLS: ssl_config failed");
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| 394 | return CURLE_SSL_CONNECT_ERROR;
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| 395 | }
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| 396 |
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| 397 | /* new profile with RSA min key len = 1024 ... */
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| 398 | mbedtls_ssl_conf_cert_profile(&BACKEND->config,
|
---|
| 399 | &mbedtls_x509_crt_profile_fr);
|
---|
| 400 |
|
---|
| 401 | switch(SSL_CONN_CONFIG(version)) {
|
---|
| 402 | case CURL_SSLVERSION_DEFAULT:
|
---|
| 403 | case CURL_SSLVERSION_TLSv1:
|
---|
| 404 | mbedtls_ssl_conf_min_version(&BACKEND->config, MBEDTLS_SSL_MAJOR_VERSION_3,
|
---|
| 405 | MBEDTLS_SSL_MINOR_VERSION_1);
|
---|
| 406 | infof(data, "mbedTLS: Set min SSL version to TLS 1.0\n");
|
---|
| 407 | break;
|
---|
| 408 | case CURL_SSLVERSION_SSLv3:
|
---|
| 409 | mbedtls_ssl_conf_min_version(&BACKEND->config, MBEDTLS_SSL_MAJOR_VERSION_3,
|
---|
| 410 | MBEDTLS_SSL_MINOR_VERSION_0);
|
---|
| 411 | mbedtls_ssl_conf_max_version(&BACKEND->config, MBEDTLS_SSL_MAJOR_VERSION_3,
|
---|
| 412 | MBEDTLS_SSL_MINOR_VERSION_0);
|
---|
| 413 | infof(data, "mbedTLS: Set SSL version to SSLv3\n");
|
---|
| 414 | break;
|
---|
| 415 | case CURL_SSLVERSION_TLSv1_0:
|
---|
| 416 | case CURL_SSLVERSION_TLSv1_1:
|
---|
| 417 | case CURL_SSLVERSION_TLSv1_2:
|
---|
| 418 | case CURL_SSLVERSION_TLSv1_3:
|
---|
| 419 | {
|
---|
| 420 | CURLcode result = set_ssl_version_min_max(conn, sockindex);
|
---|
| 421 | if(result != CURLE_OK)
|
---|
| 422 | return result;
|
---|
| 423 | break;
|
---|
| 424 | }
|
---|
| 425 | default:
|
---|
| 426 | failf(data, "Unrecognized parameter passed via CURLOPT_SSLVERSION");
|
---|
| 427 | return CURLE_SSL_CONNECT_ERROR;
|
---|
| 428 | }
|
---|
| 429 |
|
---|
| 430 | mbedtls_ssl_conf_authmode(&BACKEND->config, MBEDTLS_SSL_VERIFY_OPTIONAL);
|
---|
| 431 |
|
---|
| 432 | mbedtls_ssl_conf_rng(&BACKEND->config, mbedtls_ctr_drbg_random,
|
---|
| 433 | &BACKEND->ctr_drbg);
|
---|
| 434 | mbedtls_ssl_set_bio(&BACKEND->ssl, &conn->sock[sockindex],
|
---|
| 435 | mbedtls_net_send,
|
---|
| 436 | mbedtls_net_recv,
|
---|
| 437 | NULL /* rev_timeout() */);
|
---|
| 438 |
|
---|
| 439 | mbedtls_ssl_conf_ciphersuites(&BACKEND->config,
|
---|
| 440 | mbedtls_ssl_list_ciphersuites());
|
---|
| 441 |
|
---|
| 442 | #if defined(MBEDTLS_SSL_RENEGOTIATION)
|
---|
| 443 | mbedtls_ssl_conf_renegotiation(&BACKEND->config,
|
---|
| 444 | MBEDTLS_SSL_RENEGOTIATION_ENABLED);
|
---|
| 445 | #endif
|
---|
| 446 |
|
---|
| 447 | #if defined(MBEDTLS_SSL_SESSION_TICKETS)
|
---|
| 448 | mbedtls_ssl_conf_session_tickets(&BACKEND->config,
|
---|
| 449 | MBEDTLS_SSL_SESSION_TICKETS_DISABLED);
|
---|
| 450 | #endif
|
---|
| 451 |
|
---|
| 452 | /* Check if there's a cached ID we can/should use here! */
|
---|
| 453 | if(SSL_SET_OPTION(primary.sessionid)) {
|
---|
| 454 | void *old_session = NULL;
|
---|
| 455 |
|
---|
| 456 | Curl_ssl_sessionid_lock(conn);
|
---|
| 457 | if(!Curl_ssl_getsessionid(conn, &old_session, NULL, sockindex)) {
|
---|
| 458 | ret = mbedtls_ssl_set_session(&BACKEND->ssl, old_session);
|
---|
| 459 | if(ret) {
|
---|
| 460 | Curl_ssl_sessionid_unlock(conn);
|
---|
| 461 | failf(data, "mbedtls_ssl_set_session returned -0x%x", -ret);
|
---|
| 462 | return CURLE_SSL_CONNECT_ERROR;
|
---|
| 463 | }
|
---|
| 464 | infof(data, "mbedTLS re-using session\n");
|
---|
| 465 | }
|
---|
| 466 | Curl_ssl_sessionid_unlock(conn);
|
---|
| 467 | }
|
---|
| 468 |
|
---|
| 469 | mbedtls_ssl_conf_ca_chain(&BACKEND->config,
|
---|
| 470 | &BACKEND->cacert,
|
---|
| 471 | &BACKEND->crl);
|
---|
| 472 |
|
---|
| 473 | if(SSL_SET_OPTION(key)) {
|
---|
| 474 | mbedtls_ssl_conf_own_cert(&BACKEND->config,
|
---|
| 475 | &BACKEND->clicert, &BACKEND->pk);
|
---|
| 476 | }
|
---|
| 477 | if(mbedtls_ssl_set_hostname(&BACKEND->ssl, hostname)) {
|
---|
| 478 | /* mbedtls_ssl_set_hostname() sets the name to use in CN/SAN checks *and*
|
---|
| 479 | the name to set in the SNI extension. So even if curl connects to a
|
---|
| 480 | host specified as an IP address, this function must be used. */
|
---|
| 481 | failf(data, "couldn't set hostname in mbedTLS");
|
---|
| 482 | return CURLE_SSL_CONNECT_ERROR;
|
---|
| 483 | }
|
---|
| 484 |
|
---|
| 485 | #ifdef HAS_ALPN
|
---|
| 486 | if(conn->bits.tls_enable_alpn) {
|
---|
| 487 | const char **p = &BACKEND->protocols[0];
|
---|
| 488 | #ifdef USE_NGHTTP2
|
---|
| 489 | if(data->set.httpversion >= CURL_HTTP_VERSION_2)
|
---|
| 490 | *p++ = NGHTTP2_PROTO_VERSION_ID;
|
---|
| 491 | #endif
|
---|
| 492 | *p++ = ALPN_HTTP_1_1;
|
---|
| 493 | *p = NULL;
|
---|
| 494 | /* this function doesn't clone the protocols array, which is why we need
|
---|
| 495 | to keep it around */
|
---|
| 496 | if(mbedtls_ssl_conf_alpn_protocols(&BACKEND->config,
|
---|
| 497 | &BACKEND->protocols[0])) {
|
---|
| 498 | failf(data, "Failed setting ALPN protocols");
|
---|
| 499 | return CURLE_SSL_CONNECT_ERROR;
|
---|
| 500 | }
|
---|
| 501 | for(p = &BACKEND->protocols[0]; *p; ++p)
|
---|
| 502 | infof(data, "ALPN, offering %s\n", *p);
|
---|
| 503 | }
|
---|
| 504 | #endif
|
---|
| 505 |
|
---|
| 506 | #ifdef MBEDTLS_DEBUG
|
---|
| 507 | /* In order to make that work in mbedtls MBEDTLS_DEBUG_C must be defined. */
|
---|
| 508 | mbedtls_ssl_conf_dbg(&BACKEND->config, mbed_debug, data);
|
---|
| 509 | /* - 0 No debug
|
---|
| 510 | * - 1 Error
|
---|
| 511 | * - 2 State change
|
---|
| 512 | * - 3 Informational
|
---|
| 513 | * - 4 Verbose
|
---|
| 514 | */
|
---|
| 515 | mbedtls_debug_set_threshold(4);
|
---|
| 516 | #endif
|
---|
| 517 |
|
---|
| 518 | /* give application a chance to interfere with mbedTLS set up. */
|
---|
| 519 | if(data->set.ssl.fsslctx) {
|
---|
| 520 | ret = (*data->set.ssl.fsslctx)(data, &BACKEND->config,
|
---|
| 521 | data->set.ssl.fsslctxp);
|
---|
| 522 | if(ret) {
|
---|
| 523 | failf(data, "error signaled by ssl ctx callback");
|
---|
| 524 | return ret;
|
---|
| 525 | }
|
---|
| 526 | }
|
---|
| 527 |
|
---|
| 528 | connssl->connecting_state = ssl_connect_2;
|
---|
| 529 |
|
---|
| 530 | return CURLE_OK;
|
---|
| 531 | }
|
---|
| 532 |
|
---|
| 533 | static CURLcode
|
---|
| 534 | mbed_connect_step2(struct connectdata *conn,
|
---|
| 535 | int sockindex)
|
---|
| 536 | {
|
---|
| 537 | int ret;
|
---|
| 538 | struct Curl_easy *data = conn->data;
|
---|
| 539 | struct ssl_connect_data* connssl = &conn->ssl[sockindex];
|
---|
| 540 | const mbedtls_x509_crt *peercert;
|
---|
| 541 | const char * const pinnedpubkey = SSL_IS_PROXY() ?
|
---|
| 542 | data->set.str[STRING_SSL_PINNEDPUBLICKEY_PROXY] :
|
---|
| 543 | data->set.str[STRING_SSL_PINNEDPUBLICKEY_ORIG];
|
---|
| 544 |
|
---|
| 545 | #ifdef HAS_ALPN
|
---|
| 546 | const char *next_protocol;
|
---|
| 547 | #endif
|
---|
| 548 |
|
---|
| 549 | char errorbuf[128];
|
---|
| 550 | errorbuf[0] = 0;
|
---|
| 551 |
|
---|
| 552 | conn->recv[sockindex] = mbed_recv;
|
---|
| 553 | conn->send[sockindex] = mbed_send;
|
---|
| 554 |
|
---|
| 555 | ret = mbedtls_ssl_handshake(&BACKEND->ssl);
|
---|
| 556 |
|
---|
| 557 | if(ret == MBEDTLS_ERR_SSL_WANT_READ) {
|
---|
| 558 | connssl->connecting_state = ssl_connect_2_reading;
|
---|
| 559 | return CURLE_OK;
|
---|
| 560 | }
|
---|
| 561 | else if(ret == MBEDTLS_ERR_SSL_WANT_WRITE) {
|
---|
| 562 | connssl->connecting_state = ssl_connect_2_writing;
|
---|
| 563 | return CURLE_OK;
|
---|
| 564 | }
|
---|
| 565 | else if(ret) {
|
---|
| 566 | #ifdef MBEDTLS_ERROR_C
|
---|
| 567 | mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
|
---|
| 568 | #endif /* MBEDTLS_ERROR_C */
|
---|
| 569 | failf(data, "ssl_handshake returned - mbedTLS: (-0x%04X) %s",
|
---|
| 570 | -ret, errorbuf);
|
---|
| 571 | return CURLE_SSL_CONNECT_ERROR;
|
---|
| 572 | }
|
---|
| 573 |
|
---|
| 574 | infof(data, "mbedTLS: Handshake complete, cipher is %s\n",
|
---|
| 575 | mbedtls_ssl_get_ciphersuite(&BACKEND->ssl)
|
---|
| 576 | );
|
---|
| 577 |
|
---|
| 578 | ret = mbedtls_ssl_get_verify_result(&BACKEND->ssl);
|
---|
| 579 |
|
---|
| 580 | if(ret && SSL_CONN_CONFIG(verifypeer)) {
|
---|
| 581 | if(ret & MBEDTLS_X509_BADCERT_EXPIRED)
|
---|
| 582 | failf(data, "Cert verify failed: BADCERT_EXPIRED");
|
---|
| 583 |
|
---|
| 584 | if(ret & MBEDTLS_X509_BADCERT_REVOKED) {
|
---|
| 585 | failf(data, "Cert verify failed: BADCERT_REVOKED");
|
---|
| 586 | return CURLE_SSL_CACERT;
|
---|
| 587 | }
|
---|
| 588 |
|
---|
| 589 | if(ret & MBEDTLS_X509_BADCERT_CN_MISMATCH)
|
---|
| 590 | failf(data, "Cert verify failed: BADCERT_CN_MISMATCH");
|
---|
| 591 |
|
---|
| 592 | if(ret & MBEDTLS_X509_BADCERT_NOT_TRUSTED)
|
---|
| 593 | failf(data, "Cert verify failed: BADCERT_NOT_TRUSTED");
|
---|
| 594 |
|
---|
| 595 | return CURLE_PEER_FAILED_VERIFICATION;
|
---|
| 596 | }
|
---|
| 597 |
|
---|
| 598 | peercert = mbedtls_ssl_get_peer_cert(&BACKEND->ssl);
|
---|
| 599 |
|
---|
| 600 | if(peercert && data->set.verbose) {
|
---|
| 601 | const size_t bufsize = 16384;
|
---|
| 602 | char *buffer = malloc(bufsize);
|
---|
| 603 |
|
---|
| 604 | if(!buffer)
|
---|
| 605 | return CURLE_OUT_OF_MEMORY;
|
---|
| 606 |
|
---|
| 607 | if(mbedtls_x509_crt_info(buffer, bufsize, "* ", peercert) > 0)
|
---|
| 608 | infof(data, "Dumping cert info:\n%s\n", buffer);
|
---|
| 609 | else
|
---|
| 610 | infof(data, "Unable to dump certificate information.\n");
|
---|
| 611 |
|
---|
| 612 | free(buffer);
|
---|
| 613 | }
|
---|
| 614 |
|
---|
| 615 | if(pinnedpubkey) {
|
---|
| 616 | int size;
|
---|
| 617 | CURLcode result;
|
---|
| 618 | mbedtls_x509_crt *p;
|
---|
| 619 | unsigned char pubkey[PUB_DER_MAX_BYTES];
|
---|
| 620 |
|
---|
| 621 | if(!peercert || !peercert->raw.p || !peercert->raw.len) {
|
---|
| 622 | failf(data, "Failed due to missing peer certificate");
|
---|
| 623 | return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
|
---|
| 624 | }
|
---|
| 625 |
|
---|
| 626 | p = calloc(1, sizeof(*p));
|
---|
| 627 |
|
---|
| 628 | if(!p)
|
---|
| 629 | return CURLE_OUT_OF_MEMORY;
|
---|
| 630 |
|
---|
| 631 | mbedtls_x509_crt_init(p);
|
---|
| 632 |
|
---|
| 633 | /* Make a copy of our const peercert because mbedtls_pk_write_pubkey_der
|
---|
| 634 | needs a non-const key, for now.
|
---|
| 635 | https://github.com/ARMmbed/mbedtls/issues/396 */
|
---|
| 636 | if(mbedtls_x509_crt_parse_der(p, peercert->raw.p, peercert->raw.len)) {
|
---|
| 637 | failf(data, "Failed copying peer certificate");
|
---|
| 638 | mbedtls_x509_crt_free(p);
|
---|
| 639 | free(p);
|
---|
| 640 | return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
|
---|
| 641 | }
|
---|
| 642 |
|
---|
| 643 | size = mbedtls_pk_write_pubkey_der(&p->pk, pubkey, PUB_DER_MAX_BYTES);
|
---|
| 644 |
|
---|
| 645 | if(size <= 0) {
|
---|
| 646 | failf(data, "Failed copying public key from peer certificate");
|
---|
| 647 | mbedtls_x509_crt_free(p);
|
---|
| 648 | free(p);
|
---|
| 649 | return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
|
---|
| 650 | }
|
---|
| 651 |
|
---|
| 652 | /* mbedtls_pk_write_pubkey_der writes data at the end of the buffer. */
|
---|
| 653 | result = Curl_pin_peer_pubkey(data,
|
---|
| 654 | pinnedpubkey,
|
---|
| 655 | &pubkey[PUB_DER_MAX_BYTES - size], size);
|
---|
| 656 | if(result) {
|
---|
| 657 | mbedtls_x509_crt_free(p);
|
---|
| 658 | free(p);
|
---|
| 659 | return result;
|
---|
| 660 | }
|
---|
| 661 |
|
---|
| 662 | mbedtls_x509_crt_free(p);
|
---|
| 663 | free(p);
|
---|
| 664 | }
|
---|
| 665 |
|
---|
| 666 | #ifdef HAS_ALPN
|
---|
| 667 | if(conn->bits.tls_enable_alpn) {
|
---|
| 668 | next_protocol = mbedtls_ssl_get_alpn_protocol(&BACKEND->ssl);
|
---|
| 669 |
|
---|
| 670 | if(next_protocol) {
|
---|
| 671 | infof(data, "ALPN, server accepted to use %s\n", next_protocol);
|
---|
| 672 | #ifdef USE_NGHTTP2
|
---|
| 673 | if(!strncmp(next_protocol, NGHTTP2_PROTO_VERSION_ID,
|
---|
| 674 | NGHTTP2_PROTO_VERSION_ID_LEN) &&
|
---|
| 675 | !next_protocol[NGHTTP2_PROTO_VERSION_ID_LEN]) {
|
---|
| 676 | conn->negnpn = CURL_HTTP_VERSION_2;
|
---|
| 677 | }
|
---|
| 678 | else
|
---|
| 679 | #endif
|
---|
| 680 | if(!strncmp(next_protocol, ALPN_HTTP_1_1, ALPN_HTTP_1_1_LENGTH) &&
|
---|
| 681 | !next_protocol[ALPN_HTTP_1_1_LENGTH]) {
|
---|
| 682 | conn->negnpn = CURL_HTTP_VERSION_1_1;
|
---|
| 683 | }
|
---|
| 684 | }
|
---|
| 685 | else {
|
---|
| 686 | infof(data, "ALPN, server did not agree to a protocol\n");
|
---|
| 687 | }
|
---|
| 688 | }
|
---|
| 689 | #endif
|
---|
| 690 |
|
---|
| 691 | connssl->connecting_state = ssl_connect_3;
|
---|
| 692 | infof(data, "SSL connected\n");
|
---|
| 693 |
|
---|
| 694 | return CURLE_OK;
|
---|
| 695 | }
|
---|
| 696 |
|
---|
| 697 | static CURLcode
|
---|
| 698 | mbed_connect_step3(struct connectdata *conn,
|
---|
| 699 | int sockindex)
|
---|
| 700 | {
|
---|
| 701 | CURLcode retcode = CURLE_OK;
|
---|
| 702 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
| 703 | struct Curl_easy *data = conn->data;
|
---|
| 704 |
|
---|
| 705 | DEBUGASSERT(ssl_connect_3 == connssl->connecting_state);
|
---|
| 706 |
|
---|
| 707 | if(SSL_SET_OPTION(primary.sessionid)) {
|
---|
| 708 | int ret;
|
---|
| 709 | mbedtls_ssl_session *our_ssl_sessionid;
|
---|
| 710 | void *old_ssl_sessionid = NULL;
|
---|
| 711 |
|
---|
| 712 | our_ssl_sessionid = malloc(sizeof(mbedtls_ssl_session));
|
---|
| 713 | if(!our_ssl_sessionid)
|
---|
| 714 | return CURLE_OUT_OF_MEMORY;
|
---|
| 715 |
|
---|
| 716 | mbedtls_ssl_session_init(our_ssl_sessionid);
|
---|
| 717 |
|
---|
| 718 | ret = mbedtls_ssl_get_session(&BACKEND->ssl, our_ssl_sessionid);
|
---|
| 719 | if(ret) {
|
---|
| 720 | free(our_ssl_sessionid);
|
---|
| 721 | failf(data, "mbedtls_ssl_get_session returned -0x%x", -ret);
|
---|
| 722 | return CURLE_SSL_CONNECT_ERROR;
|
---|
| 723 | }
|
---|
| 724 |
|
---|
| 725 | /* If there's already a matching session in the cache, delete it */
|
---|
| 726 | Curl_ssl_sessionid_lock(conn);
|
---|
| 727 | if(!Curl_ssl_getsessionid(conn, &old_ssl_sessionid, NULL, sockindex))
|
---|
| 728 | Curl_ssl_delsessionid(conn, old_ssl_sessionid);
|
---|
| 729 |
|
---|
| 730 | retcode = Curl_ssl_addsessionid(conn, our_ssl_sessionid, 0, sockindex);
|
---|
| 731 | Curl_ssl_sessionid_unlock(conn);
|
---|
| 732 | if(retcode) {
|
---|
| 733 | free(our_ssl_sessionid);
|
---|
| 734 | failf(data, "failed to store ssl session");
|
---|
| 735 | return retcode;
|
---|
| 736 | }
|
---|
| 737 | }
|
---|
| 738 |
|
---|
| 739 | connssl->connecting_state = ssl_connect_done;
|
---|
| 740 |
|
---|
| 741 | return CURLE_OK;
|
---|
| 742 | }
|
---|
| 743 |
|
---|
| 744 | static ssize_t mbed_send(struct connectdata *conn, int sockindex,
|
---|
| 745 | const void *mem, size_t len,
|
---|
| 746 | CURLcode *curlcode)
|
---|
| 747 | {
|
---|
| 748 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
| 749 | int ret = -1;
|
---|
| 750 |
|
---|
| 751 | ret = mbedtls_ssl_write(&BACKEND->ssl,
|
---|
| 752 | (unsigned char *)mem, len);
|
---|
| 753 |
|
---|
| 754 | if(ret < 0) {
|
---|
| 755 | *curlcode = (ret == MBEDTLS_ERR_SSL_WANT_WRITE) ?
|
---|
| 756 | CURLE_AGAIN : CURLE_SEND_ERROR;
|
---|
| 757 | ret = -1;
|
---|
| 758 | }
|
---|
| 759 |
|
---|
| 760 | return ret;
|
---|
| 761 | }
|
---|
| 762 |
|
---|
| 763 | static void Curl_mbedtls_close_all(struct Curl_easy *data)
|
---|
| 764 | {
|
---|
| 765 | (void)data;
|
---|
| 766 | }
|
---|
| 767 |
|
---|
| 768 | static void Curl_mbedtls_close(struct connectdata *conn, int sockindex)
|
---|
| 769 | {
|
---|
| 770 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
| 771 | mbedtls_pk_free(&BACKEND->pk);
|
---|
| 772 | mbedtls_x509_crt_free(&BACKEND->clicert);
|
---|
| 773 | mbedtls_x509_crt_free(&BACKEND->cacert);
|
---|
| 774 | mbedtls_x509_crl_free(&BACKEND->crl);
|
---|
| 775 | mbedtls_ssl_config_free(&BACKEND->config);
|
---|
| 776 | mbedtls_ssl_free(&BACKEND->ssl);
|
---|
| 777 | mbedtls_ctr_drbg_free(&BACKEND->ctr_drbg);
|
---|
| 778 | #ifndef THREADING_SUPPORT
|
---|
| 779 | mbedtls_entropy_free(&BACKEND->entropy);
|
---|
| 780 | #endif /* THREADING_SUPPORT */
|
---|
| 781 | }
|
---|
| 782 |
|
---|
| 783 | static ssize_t mbed_recv(struct connectdata *conn, int num,
|
---|
| 784 | char *buf, size_t buffersize,
|
---|
| 785 | CURLcode *curlcode)
|
---|
| 786 | {
|
---|
| 787 | struct ssl_connect_data *connssl = &conn->ssl[num];
|
---|
| 788 | int ret = -1;
|
---|
| 789 | ssize_t len = -1;
|
---|
| 790 |
|
---|
| 791 | memset(buf, 0, buffersize);
|
---|
| 792 | ret = mbedtls_ssl_read(&BACKEND->ssl, (unsigned char *)buf,
|
---|
| 793 | buffersize);
|
---|
| 794 |
|
---|
| 795 | if(ret <= 0) {
|
---|
| 796 | if(ret == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY)
|
---|
| 797 | return 0;
|
---|
| 798 |
|
---|
| 799 | *curlcode = (ret == MBEDTLS_ERR_SSL_WANT_READ) ?
|
---|
| 800 | CURLE_AGAIN : CURLE_RECV_ERROR;
|
---|
| 801 | return -1;
|
---|
| 802 | }
|
---|
| 803 |
|
---|
| 804 | len = ret;
|
---|
| 805 |
|
---|
| 806 | return len;
|
---|
| 807 | }
|
---|
| 808 |
|
---|
| 809 | static void Curl_mbedtls_session_free(void *ptr)
|
---|
| 810 | {
|
---|
| 811 | mbedtls_ssl_session_free(ptr);
|
---|
| 812 | free(ptr);
|
---|
| 813 | }
|
---|
| 814 |
|
---|
| 815 | static size_t Curl_mbedtls_version(char *buffer, size_t size)
|
---|
| 816 | {
|
---|
| 817 | unsigned int version = mbedtls_version_get_number();
|
---|
| 818 | return snprintf(buffer, size, "mbedTLS/%d.%d.%d", version>>24,
|
---|
| 819 | (version>>16)&0xff, (version>>8)&0xff);
|
---|
| 820 | }
|
---|
| 821 |
|
---|
| 822 | static CURLcode Curl_mbedtls_random(struct Curl_easy *data,
|
---|
| 823 | unsigned char *entropy, size_t length)
|
---|
| 824 | {
|
---|
| 825 | #if defined(MBEDTLS_CTR_DRBG_C)
|
---|
| 826 | int ret = -1;
|
---|
| 827 | char errorbuf[128];
|
---|
| 828 | mbedtls_entropy_context ctr_entropy;
|
---|
| 829 | mbedtls_ctr_drbg_context ctr_drbg;
|
---|
| 830 | mbedtls_entropy_init(&ctr_entropy);
|
---|
| 831 | mbedtls_ctr_drbg_init(&ctr_drbg);
|
---|
| 832 | errorbuf[0] = 0;
|
---|
| 833 |
|
---|
| 834 | ret = mbedtls_ctr_drbg_seed(&ctr_drbg, mbedtls_entropy_func,
|
---|
| 835 | &ctr_entropy, NULL, 0);
|
---|
| 836 |
|
---|
| 837 | if(ret) {
|
---|
| 838 | #ifdef MBEDTLS_ERROR_C
|
---|
| 839 | mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
|
---|
| 840 | #endif /* MBEDTLS_ERROR_C */
|
---|
| 841 | failf(data, "Failed - mbedTLS: ctr_drbg_seed returned (-0x%04X) %s\n",
|
---|
| 842 | -ret, errorbuf);
|
---|
| 843 | }
|
---|
| 844 | else {
|
---|
| 845 | ret = mbedtls_ctr_drbg_random(&ctr_drbg, entropy, length);
|
---|
| 846 |
|
---|
| 847 | if(ret) {
|
---|
| 848 | #ifdef MBEDTLS_ERROR_C
|
---|
| 849 | mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
|
---|
| 850 | #endif /* MBEDTLS_ERROR_C */
|
---|
| 851 | failf(data, "mbedTLS: ctr_drbg_init returned (-0x%04X) %s\n",
|
---|
| 852 | -ret, errorbuf);
|
---|
| 853 | }
|
---|
| 854 | }
|
---|
| 855 |
|
---|
| 856 | mbedtls_ctr_drbg_free(&ctr_drbg);
|
---|
| 857 | mbedtls_entropy_free(&ctr_entropy);
|
---|
| 858 |
|
---|
| 859 | return ret == 0 ? CURLE_OK : CURLE_FAILED_INIT;
|
---|
| 860 | #elif defined(MBEDTLS_HAVEGE_C)
|
---|
| 861 | mbedtls_havege_state hs;
|
---|
| 862 | mbedtls_havege_init(&hs);
|
---|
| 863 | mbedtls_havege_random(&hs, entropy, length);
|
---|
| 864 | mbedtls_havege_free(&hs);
|
---|
| 865 | return CURLE_OK;
|
---|
| 866 | #else
|
---|
| 867 | return CURLE_NOT_BUILT_IN;
|
---|
| 868 | #endif
|
---|
| 869 | }
|
---|
| 870 |
|
---|
| 871 | static CURLcode
|
---|
| 872 | mbed_connect_common(struct connectdata *conn,
|
---|
| 873 | int sockindex,
|
---|
| 874 | bool nonblocking,
|
---|
| 875 | bool *done)
|
---|
| 876 | {
|
---|
| 877 | CURLcode retcode;
|
---|
| 878 | struct Curl_easy *data = conn->data;
|
---|
| 879 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
| 880 | curl_socket_t sockfd = conn->sock[sockindex];
|
---|
| 881 | long timeout_ms;
|
---|
| 882 | int what;
|
---|
| 883 |
|
---|
| 884 | /* check if the connection has already been established */
|
---|
| 885 | if(ssl_connection_complete == connssl->state) {
|
---|
| 886 | *done = TRUE;
|
---|
| 887 | return CURLE_OK;
|
---|
| 888 | }
|
---|
| 889 |
|
---|
| 890 | if(ssl_connect_1 == connssl->connecting_state) {
|
---|
| 891 | /* Find out how much more time we're allowed */
|
---|
| 892 | timeout_ms = Curl_timeleft(data, NULL, TRUE);
|
---|
| 893 |
|
---|
| 894 | if(timeout_ms < 0) {
|
---|
| 895 | /* no need to continue if time already is up */
|
---|
| 896 | failf(data, "SSL connection timeout");
|
---|
| 897 | return CURLE_OPERATION_TIMEDOUT;
|
---|
| 898 | }
|
---|
| 899 | retcode = mbed_connect_step1(conn, sockindex);
|
---|
| 900 | if(retcode)
|
---|
| 901 | return retcode;
|
---|
| 902 | }
|
---|
| 903 |
|
---|
| 904 | while(ssl_connect_2 == connssl->connecting_state ||
|
---|
| 905 | ssl_connect_2_reading == connssl->connecting_state ||
|
---|
| 906 | ssl_connect_2_writing == connssl->connecting_state) {
|
---|
| 907 |
|
---|
| 908 | /* check allowed time left */
|
---|
| 909 | timeout_ms = Curl_timeleft(data, NULL, TRUE);
|
---|
| 910 |
|
---|
| 911 | if(timeout_ms < 0) {
|
---|
| 912 | /* no need to continue if time already is up */
|
---|
| 913 | failf(data, "SSL connection timeout");
|
---|
| 914 | return CURLE_OPERATION_TIMEDOUT;
|
---|
| 915 | }
|
---|
| 916 |
|
---|
| 917 | /* if ssl is expecting something, check if it's available. */
|
---|
| 918 | if(connssl->connecting_state == ssl_connect_2_reading
|
---|
| 919 | || connssl->connecting_state == ssl_connect_2_writing) {
|
---|
| 920 |
|
---|
| 921 | curl_socket_t writefd = ssl_connect_2_writing ==
|
---|
| 922 | connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
|
---|
| 923 | curl_socket_t readfd = ssl_connect_2_reading ==
|
---|
| 924 | connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
|
---|
| 925 |
|
---|
| 926 | what = Curl_socket_check(readfd, CURL_SOCKET_BAD, writefd,
|
---|
| 927 | nonblocking ? 0 : timeout_ms);
|
---|
| 928 | if(what < 0) {
|
---|
| 929 | /* fatal error */
|
---|
| 930 | failf(data, "select/poll on SSL socket, errno: %d", SOCKERRNO);
|
---|
| 931 | return CURLE_SSL_CONNECT_ERROR;
|
---|
| 932 | }
|
---|
| 933 | else if(0 == what) {
|
---|
| 934 | if(nonblocking) {
|
---|
| 935 | *done = FALSE;
|
---|
| 936 | return CURLE_OK;
|
---|
| 937 | }
|
---|
| 938 | else {
|
---|
| 939 | /* timeout */
|
---|
| 940 | failf(data, "SSL connection timeout");
|
---|
| 941 | return CURLE_OPERATION_TIMEDOUT;
|
---|
| 942 | }
|
---|
| 943 | }
|
---|
| 944 | /* socket is readable or writable */
|
---|
| 945 | }
|
---|
| 946 |
|
---|
| 947 | /* Run transaction, and return to the caller if it failed or if
|
---|
| 948 | * this connection is part of a multi handle and this loop would
|
---|
| 949 | * execute again. This permits the owner of a multi handle to
|
---|
| 950 | * abort a connection attempt before step2 has completed while
|
---|
| 951 | * ensuring that a client using select() or epoll() will always
|
---|
| 952 | * have a valid fdset to wait on.
|
---|
| 953 | */
|
---|
| 954 | retcode = mbed_connect_step2(conn, sockindex);
|
---|
| 955 | if(retcode || (nonblocking &&
|
---|
| 956 | (ssl_connect_2 == connssl->connecting_state ||
|
---|
| 957 | ssl_connect_2_reading == connssl->connecting_state ||
|
---|
| 958 | ssl_connect_2_writing == connssl->connecting_state)))
|
---|
| 959 | return retcode;
|
---|
| 960 |
|
---|
| 961 | } /* repeat step2 until all transactions are done. */
|
---|
| 962 |
|
---|
| 963 | if(ssl_connect_3 == connssl->connecting_state) {
|
---|
| 964 | retcode = mbed_connect_step3(conn, sockindex);
|
---|
| 965 | if(retcode)
|
---|
| 966 | return retcode;
|
---|
| 967 | }
|
---|
| 968 |
|
---|
| 969 | if(ssl_connect_done == connssl->connecting_state) {
|
---|
| 970 | connssl->state = ssl_connection_complete;
|
---|
| 971 | conn->recv[sockindex] = mbed_recv;
|
---|
| 972 | conn->send[sockindex] = mbed_send;
|
---|
| 973 | *done = TRUE;
|
---|
| 974 | }
|
---|
| 975 | else
|
---|
| 976 | *done = FALSE;
|
---|
| 977 |
|
---|
| 978 | /* Reset our connect state machine */
|
---|
| 979 | connssl->connecting_state = ssl_connect_1;
|
---|
| 980 |
|
---|
| 981 | return CURLE_OK;
|
---|
| 982 | }
|
---|
| 983 |
|
---|
| 984 | static CURLcode Curl_mbedtls_connect_nonblocking(struct connectdata *conn,
|
---|
| 985 | int sockindex, bool *done)
|
---|
| 986 | {
|
---|
| 987 | return mbed_connect_common(conn, sockindex, TRUE, done);
|
---|
| 988 | }
|
---|
| 989 |
|
---|
| 990 |
|
---|
| 991 | static CURLcode Curl_mbedtls_connect(struct connectdata *conn, int sockindex)
|
---|
| 992 | {
|
---|
| 993 | CURLcode retcode;
|
---|
| 994 | bool done = FALSE;
|
---|
| 995 |
|
---|
| 996 | retcode = mbed_connect_common(conn, sockindex, FALSE, &done);
|
---|
| 997 | if(retcode)
|
---|
| 998 | return retcode;
|
---|
| 999 |
|
---|
| 1000 | DEBUGASSERT(done);
|
---|
| 1001 |
|
---|
| 1002 | return CURLE_OK;
|
---|
| 1003 | }
|
---|
| 1004 |
|
---|
| 1005 | /*
|
---|
| 1006 | * return 0 error initializing SSL
|
---|
| 1007 | * return 1 SSL initialized successfully
|
---|
| 1008 | */
|
---|
| 1009 | static int Curl_mbedtls_init(void)
|
---|
| 1010 | {
|
---|
| 1011 | return Curl_polarsslthreadlock_thread_setup();
|
---|
| 1012 | }
|
---|
| 1013 |
|
---|
| 1014 | static void Curl_mbedtls_cleanup(void)
|
---|
| 1015 | {
|
---|
| 1016 | (void)Curl_polarsslthreadlock_thread_cleanup();
|
---|
| 1017 | }
|
---|
| 1018 |
|
---|
| 1019 | static bool Curl_mbedtls_data_pending(const struct connectdata *conn,
|
---|
| 1020 | int sockindex)
|
---|
| 1021 | {
|
---|
| 1022 | const struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
| 1023 | return mbedtls_ssl_get_bytes_avail(&BACKEND->ssl) != 0;
|
---|
| 1024 | }
|
---|
| 1025 |
|
---|
| 1026 | static void Curl_mbedtls_sha256sum(const unsigned char *input,
|
---|
| 1027 | size_t inputlen,
|
---|
| 1028 | unsigned char *sha256sum,
|
---|
| 1029 | size_t sha256len UNUSED_PARAM)
|
---|
| 1030 | {
|
---|
| 1031 | (void)sha256len;
|
---|
| 1032 | mbedtls_sha256(input, inputlen, sha256sum, 0);
|
---|
| 1033 | }
|
---|
| 1034 |
|
---|
| 1035 | static void *Curl_mbedtls_get_internals(struct ssl_connect_data *connssl,
|
---|
| 1036 | CURLINFO info UNUSED_PARAM)
|
---|
| 1037 | {
|
---|
| 1038 | (void)info;
|
---|
| 1039 | return &BACKEND->ssl;
|
---|
| 1040 | }
|
---|
| 1041 |
|
---|
| 1042 | const struct Curl_ssl Curl_ssl_mbedtls = {
|
---|
| 1043 | { CURLSSLBACKEND_MBEDTLS, "mbedtls" }, /* info */
|
---|
| 1044 |
|
---|
| 1045 | 1, /* have_ca_path */
|
---|
| 1046 | 0, /* have_certinfo */
|
---|
| 1047 | 1, /* have_pinnedpubkey */
|
---|
| 1048 | 1, /* have_ssl_ctx */
|
---|
| 1049 | 0, /* support_https_proxy */
|
---|
| 1050 |
|
---|
| 1051 | sizeof(struct ssl_backend_data),
|
---|
| 1052 |
|
---|
| 1053 | Curl_mbedtls_init, /* init */
|
---|
| 1054 | Curl_mbedtls_cleanup, /* cleanup */
|
---|
| 1055 | Curl_mbedtls_version, /* version */
|
---|
| 1056 | Curl_none_check_cxn, /* check_cxn */
|
---|
| 1057 | Curl_none_shutdown, /* shutdown */
|
---|
| 1058 | Curl_mbedtls_data_pending, /* data_pending */
|
---|
| 1059 | Curl_mbedtls_random, /* random */
|
---|
| 1060 | Curl_none_cert_status_request, /* cert_status_request */
|
---|
| 1061 | Curl_mbedtls_connect, /* connect */
|
---|
| 1062 | Curl_mbedtls_connect_nonblocking, /* connect_nonblocking */
|
---|
| 1063 | Curl_mbedtls_get_internals, /* get_internals */
|
---|
| 1064 | Curl_mbedtls_close, /* close_one */
|
---|
| 1065 | Curl_mbedtls_close_all, /* close_all */
|
---|
| 1066 | Curl_mbedtls_session_free, /* session_free */
|
---|
| 1067 | Curl_none_set_engine, /* set_engine */
|
---|
| 1068 | Curl_none_set_engine_default, /* set_engine_default */
|
---|
| 1069 | Curl_none_engines_list, /* engines_list */
|
---|
| 1070 | Curl_none_false_start, /* false_start */
|
---|
| 1071 | Curl_none_md5sum, /* md5sum */
|
---|
| 1072 | Curl_mbedtls_sha256sum /* sha256sum */
|
---|
| 1073 | };
|
---|
| 1074 |
|
---|
| 1075 | #endif /* USE_MBEDTLS */
|
---|