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
  20 #define CLIENT_VERSION_LEN      2
  21 #define SESSION_ID_LEN_LEN      1
  22 #define CIPHERS_LEN_LEN         2
  23 #define COMPRESSION_LEN_LEN     1
  24 #define EXTENSIONS_LEN_LEN      2
  25 #define EXTENSION_TYPE_LEN      2
  26 #define EXTENSION_SIZE_LEN      2
  27
  28
  29 #define TOTAL_NUM_TESTS                         1
  30
  31 /*
  32  * Test that explicitly setting ticket data results in it appearing in the
  33  * ClientHello for a negotiated SSL/TLS version
  34  */
  35 #define TEST_SET_SESSION_TICK_DATA_VER_NEG      0
  36
  37 int main(int argc, char *argv[])
  38 {
  39     SSL_CTX *ctx;
  40     SSL *con;
  41     BIO *rbio;
  42     BIO *wbio;
  43     BIO *err;
  44     long len;
  45     unsigned char *data;
  46     unsigned char *dataend;
  47     char *dummytick = "Hello World!";
  48     unsigned int tmplen;
  49     unsigned int type;
  50     unsigned int size;
  51     int testresult = 0;
  52     int currtest = 0;
  53
  54     err = BIO_new_fp(stderr, BIO_NOCLOSE | BIO_FP_TEXT);
  55
  56     CRYPTO_set_mem_debug(1);
  57     CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
  58
  59     /*
  60      * For each test set up an SSL_CTX and SSL and see what ClientHello gets
  61      * produced when we try to connect
  62      */
  63     for (; currtest < TOTAL_NUM_TESTS; currtest++) {
  64         testresult = 0;
  65         ctx = SSL_CTX_new(TLS_method());
  66         con = SSL_new(ctx);
  67
  68         rbio = BIO_new(BIO_s_mem());
  69         wbio = BIO_new(BIO_s_mem());
  70         SSL_set_bio(con, rbio, wbio);
  71         SSL_set_connect_state(con);
  72
  73         if (currtest == TEST_SET_SESSION_TICK_DATA_VER_NEG) {
  74             if (!SSL_set_session_ticket_ext(con, dummytick, strlen(dummytick)))
  75                 goto end;
  76         }
  77
  78         if (SSL_connect(con) > 0) {
  79             /* This shouldn't succeed because we don't have a server! */
  80             goto end;
  81         }
  82
  83         len = BIO_get_mem_data(wbio, (char **)&data);
  84         dataend = data + len;
  85
  86         /* Skip the record header */
  87         data += SSL3_RT_HEADER_LENGTH;
  88         /* Skip the handshake message header */
  89         data += SSL3_HM_HEADER_LENGTH;
  90         /* Skip client version and random */
  91         data += CLIENT_VERSION_LEN + SSL3_RANDOM_SIZE;
  92         if (data + SESSION_ID_LEN_LEN > dataend)
  93             goto end;
  94         /* Skip session id */
  95         tmplen = *data;
  96         data += SESSION_ID_LEN_LEN + tmplen;
  97         if (data + CIPHERS_LEN_LEN > dataend)
  98             goto end;
  99         /* Skip ciphers */
 100         tmplen = ((*data) << 8) | *(data + 1);
 101         data += CIPHERS_LEN_LEN + tmplen;
 102         if (data + COMPRESSION_LEN_LEN > dataend)
 103             goto end;
 104         /* Skip compression */
 105         tmplen = *data;
 106         data += COMPRESSION_LEN_LEN + tmplen;
 107         if (data + EXTENSIONS_LEN_LEN > dataend)
 108             goto end;
 109         /* Extensions len */
 110         tmplen = ((*data) << 8) | *(data + 1);
 111         data += EXTENSIONS_LEN_LEN;
 112         if (data + tmplen > dataend)
 113             goto end;
 114
 115         /* Loop through all extensions */
 116         while (tmplen > EXTENSION_TYPE_LEN + EXTENSION_SIZE_LEN) {
 117             type = ((*data) << 8) | *(data + 1);
 118             data += EXTENSION_TYPE_LEN;
 119             size = ((*data) << 8) | *(data + 1);
 120             data += EXTENSION_SIZE_LEN;
 121             if (data + size > dataend)
 122                 goto end;
 123
 124             if (type == TLSEXT_TYPE_session_ticket) {
 125                 if (currtest == TEST_SET_SESSION_TICK_DATA_VER_NEG) {
 126                     if (size == strlen(dummytick)
 127                             && memcmp(data, dummytick, size) == 0) {
 128                         /* Ticket data is as we expected */
 129                         testresult = 1;
 130                     } else {
 131                         printf("Received session ticket is not as expected\n");
 132                     }
 133                     break;
 134                 }
 135             }
 136
 137             tmplen -= EXTENSION_TYPE_LEN + EXTENSION_SIZE_LEN + size;
 138             data += size;
 139         }
 140
 141  end:
 142         SSL_free(con);
 143         SSL_CTX_free(ctx);
 144         if (!testresult) {
 145             printf("ClientHello test: FAILED (Test %d)\n", currtest);
 146             break;
 147         }
 148     }
 149
 150 #ifndef OPENSSL_NO_CRYPTO_MDEBUG
 151     if (CRYPTO_mem_leaks(err) <= 0)
 152         testresult = 0;
 153 #endif
 154     BIO_free(err);
 155
 156     return testresult?0:1;
 157 }