test/clienthellotest.c

   1 /*
   2  * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <string.h>
  11
  12 #include <openssl/opensslconf.h>
  13 #include <openssl/bio.h>
  14 #include <openssl/crypto.h>
  15 #include <openssl/evp.h>
  16 #include <openssl/ssl.h>
  17 #include <openssl/err.h>
  18
  19 #include "../ssl/packet_locl.h"
  20
  21 #define CLIENT_VERSION_LEN      2
  22
  23
  24 #define TOTAL_NUM_TESTS                         1
  25
  26 /*
  27  * Test that explicitly setting ticket data results in it appearing in the
  28  * ClientHello for a negotiated SSL/TLS version
  29  */
  30 #define TEST_SET_SESSION_TICK_DATA_VER_NEG      0
  31
  32 int main(int argc, char *argv[])
  33 {
  34     SSL_CTX *ctx;
  35     SSL *con = NULL;
  36     BIO *rbio;
  37     BIO *wbio;
  38     BIO *err;
  39     long len;
  40     unsigned char *data;
  41     PACKET pkt, pkt2, pkt3;
  42     char *dummytick = "Hello World!";
  43     unsigned int type;
  44     int testresult = 0;
  45     int currtest = 0;
  46
  47     err = BIO_new_fp(stderr, BIO_NOCLOSE | BIO_FP_TEXT);
  48
  49     CRYPTO_set_mem_debug(1);
  50     CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
  51
  52     /*
  53      * For each test set up an SSL_CTX and SSL and see what ClientHello gets
  54      * produced when we try to connect
  55      */
  56     for (; currtest < TOTAL_NUM_TESTS; currtest++) {
  57         testresult = 0;
  58         ctx = SSL_CTX_new(TLS_method());
  59
  60         /* Testing for session tickets <= TLS1.2; not relevant for 1.3 */
  61         if (ctx == NULL || !SSL_CTX_set_max_proto_version(ctx, TLS1_2_VERSION))
  62             goto end;
  63
  64         con = SSL_new(ctx);
  65         if (con == NULL)
  66             goto end;
  67
  68         rbio = BIO_new(BIO_s_mem());
  69         wbio = BIO_new(BIO_s_mem());
  70         if (rbio == NULL || wbio == NULL) {
  71             BIO_free(rbio);
  72             BIO_free(wbio);
  73             goto end;
  74         }
  75
  76         SSL_set_bio(con, rbio, wbio);
  77         SSL_set_connect_state(con);
  78
  79         if (currtest == TEST_SET_SESSION_TICK_DATA_VER_NEG) {
  80             if (!SSL_set_session_ticket_ext(con, dummytick, strlen(dummytick)))
  81                 goto end;
  82         }
  83
  84         if (SSL_connect(con) > 0) {
  85             /* This shouldn't succeed because we don't have a server! */
  86             goto end;
  87         }
  88
  89         len = BIO_get_mem_data(wbio, (char **)&data);
  90         if (!PACKET_buf_init(&pkt, data, len))
  91             goto end;
  92
  93         /* Skip the record header */
  94         if (!PACKET_forward(&pkt, SSL3_RT_HEADER_LENGTH))
  95             goto end;
  96
  97         /* Skip the handshake message header */
  98         if (!PACKET_forward(&pkt, SSL3_HM_HEADER_LENGTH))
  99             goto end;
 100
 101         /* Skip client version and random */
 102         if (!PACKET_forward(&pkt, CLIENT_VERSION_LEN + SSL3_RANDOM_SIZE))
 103             goto end;
 104
 105         /* Skip session id */
 106         if (!PACKET_get_length_prefixed_1(&pkt, &pkt2))
 107             goto end;
 108
 109         /* Skip ciphers */
 110         if (!PACKET_get_length_prefixed_2(&pkt, &pkt2))
 111             goto end;
 112
 113         /* Skip compression */
 114         if (!PACKET_get_length_prefixed_1(&pkt, &pkt2))
 115             goto end;
 116
 117         /* Extensions len */
 118         if (!PACKET_as_length_prefixed_2(&pkt, &pkt2))
 119             goto end;
 120
 121         /* Loop through all extensions */
 122         while (PACKET_remaining(&pkt2)) {
 123
 124             if (!PACKET_get_net_2(&pkt2, &type) ||
 125                 !PACKET_get_length_prefixed_2(&pkt2, &pkt3))
 126                 goto end;
 127
 128             if (type == TLSEXT_TYPE_session_ticket) {
 129                 if (currtest == TEST_SET_SESSION_TICK_DATA_VER_NEG) {
 130                     if (PACKET_equal(&pkt3, dummytick, strlen(dummytick))) {
 131                         /* Ticket data is as we expected */
 132                         testresult = 1;
 133                     } else {
 134                         printf("Received session ticket is not as expected\n");
 135                     }
 136                     break;
 137                 }
 138             }
 139
 140         }
 141
 142  end:
 143         SSL_free(con);
 144         SSL_CTX_free(ctx);
 145         if (!testresult) {
 146             printf("ClientHello test: FAILED (Test %d)\n", currtest);
 147             break;
 148         }
 149     }
 150
 151 #ifndef OPENSSL_NO_CRYPTO_MDEBUG
 152     if (CRYPTO_mem_leaks(err) <= 0)
 153         testresult = 0;
 154 #endif
 155     BIO_free(err);
 156
 157     return testresult?0:1;
 158 }