+++ /dev/null
-/* ssl/s23_clnt.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
-/* ====================================================================
- * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
-
-#include <stdio.h>
-#include "ssl_locl.h"
-#include <openssl/buffer.h>
-#include <openssl/rand.h>
-#include <openssl/objects.h>
-#include <openssl/evp.h>
-
-/*static const SSL_METHOD *ssl23_get_client_method(int ver);*/
-static int ssl23_client_hello(SSL *s);
-static int ssl23_get_server_hello(SSL *s);
-
-/*
-static const SSL_METHOD *ssl23_get_client_method(int ver)
-{
-#ifndef OPENSSL_NO_SSL3
- if (ver == SSL3_VERSION)
- return (SSLv3_client_method());
-#endif
- if (ver == TLS1_VERSION)
- return (TLSv1_client_method());
- else if (ver == TLS1_1_VERSION)
- return (TLSv1_1_client_method());
- else if (ver == TLS1_2_VERSION)
- return (TLSv1_2_client_method());
- else
- return (NULL);
-}
-*/
-
-int ssl23_connect(SSL *s)
-{
- BUF_MEM *buf = NULL;
- unsigned long Time = (unsigned long)time(NULL);
- void (*cb) (const SSL *ssl, int type, int val) = NULL;
- int ret = -1;
- int new_state, state;
-
- RAND_add(&Time, sizeof(Time), 0);
- ERR_clear_error();
- clear_sys_error();
-
- if (s->info_callback != NULL)
- cb = s->info_callback;
- else if (s->ctx->info_callback != NULL)
- cb = s->ctx->info_callback;
-
- s->in_handshake++;
- if (!SSL_in_init(s) || SSL_in_before(s)) {
- if (!SSL_clear(s))
- return -1;
- }
-
- for (;;) {
- state = s->state;
-
- switch (s->state) {
- case SSL_ST_BEFORE:
- case SSL_ST_CONNECT:
- case SSL_ST_BEFORE | SSL_ST_CONNECT:
- case SSL_ST_OK | SSL_ST_CONNECT:
-
- if (s->session != NULL) {
- SSLerr(SSL_F_SSL23_CONNECT,
- SSL_R_SSL23_DOING_SESSION_ID_REUSE);
- ret = -1;
- goto end;
- }
- s->server = 0;
- if (cb != NULL)
- cb(s, SSL_CB_HANDSHAKE_START, 1);
-
- /* s->version=TLS1_VERSION; */
- s->type = SSL_ST_CONNECT;
-
- if (s->init_buf == NULL) {
- if ((buf = BUF_MEM_new()) == NULL) {
- ret = -1;
- goto end;
- }
- if (!BUF_MEM_grow(buf, SSL3_RT_MAX_PLAIN_LENGTH)) {
- ret = -1;
- goto end;
- }
- s->init_buf = buf;
- buf = NULL;
- }
-
- if (!ssl3_setup_buffers(s)) {
- ret = -1;
- goto end;
- }
-
- ssl3_init_finished_mac(s);
-
- s->state = SSL23_ST_CW_CLNT_HELLO_A;
- s->ctx->stats.sess_connect++;
- s->init_num = 0;
- break;
-
- case SSL23_ST_CW_CLNT_HELLO_A:
- case SSL23_ST_CW_CLNT_HELLO_B:
-
- s->shutdown = 0;
- ret = ssl23_client_hello(s);
- if (ret <= 0)
- goto end;
- s->state = SSL23_ST_CR_SRVR_HELLO_A;
- s->init_num = 0;
-
- break;
-
- case SSL23_ST_CR_SRVR_HELLO_A:
- case SSL23_ST_CR_SRVR_HELLO_B:
- ret = ssl23_get_server_hello(s);
- if (ret >= 0)
- cb = NULL;
- goto end;
- /* break; */
-
- default:
- SSLerr(SSL_F_SSL23_CONNECT, SSL_R_UNKNOWN_STATE);
- ret = -1;
- goto end;
- /* break; */
- }
-
- if (s->debug) {
- (void)BIO_flush(s->wbio);
- }
-
- if ((cb != NULL) && (s->state != state)) {
- new_state = s->state;
- s->state = state;
- cb(s, SSL_CB_CONNECT_LOOP, 1);
- s->state = new_state;
- }
- }
- end:
- s->in_handshake--;
- BUF_MEM_free(buf);
- if (cb != NULL)
- cb(s, SSL_CB_CONNECT_EXIT, ret);
- return (ret);
-}
-
-/*
- * Fill a ClientRandom or ServerRandom field of length len. Returns <= 0 on
- * failure, 1 on success.
- */
-int ssl_fill_hello_random(SSL *s, int server, unsigned char *result, int len)
-{
- int send_time = 0;
-
- if (len < 4)
- return 0;
- if (server)
- send_time = (s->mode & SSL_MODE_SEND_SERVERHELLO_TIME) != 0;
- else
- send_time = (s->mode & SSL_MODE_SEND_CLIENTHELLO_TIME) != 0;
- if (send_time) {
- unsigned long Time = (unsigned long)time(NULL);
- unsigned char *p = result;
- l2n(Time, p);
- return RAND_bytes(p, len - 4);
- } else
- return RAND_bytes(result, len);
-}
-
-static int ssl23_client_hello(SSL *s)
-{
- unsigned char *buf;
- unsigned char *p, *d;
- int i;
- unsigned long l;
- int version = 0, version_major, version_minor;
- int al = 0;
-#ifndef OPENSSL_NO_COMP
- int j;
- SSL_COMP *comp;
-#endif
- int ret;
- unsigned long mask, options = s->options;
-
- /*
- * SSL_OP_NO_X disables all protocols above X *if* there are
- * some protocols below X enabled. This is required in order
- * to maintain "version capability" vector contiguous. So
- * that if application wants to disable TLS1.0 in favour of
- * TLS1>=1, it would be insufficient to pass SSL_NO_TLSv1, the
- * answer is SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2.
- */
- mask = SSL_OP_NO_TLSv1_1 | SSL_OP_NO_TLSv1
-#if !defined(OPENSSL_NO_SSL3)
- | SSL_OP_NO_SSLv3
-#endif
- ;
-#if !defined(OPENSSL_NO_TLS1_2_CLIENT)
- version = TLS1_2_VERSION;
-
- if ((options & SSL_OP_NO_TLSv1_2) && (options & mask) != mask)
- version = TLS1_1_VERSION;
-#else
- version = TLS1_1_VERSION;
-#endif
- mask &= ~SSL_OP_NO_TLSv1_1;
- if ((options & SSL_OP_NO_TLSv1_1) && (options & mask) != mask)
- version = TLS1_VERSION;
- mask &= ~SSL_OP_NO_TLSv1;
-#if !defined(OPENSSL_NO_SSL3)
- if ((options & SSL_OP_NO_TLSv1) && (options & mask) != mask)
- version = SSL3_VERSION;
- mask &= ~SSL_OP_NO_SSLv3;
-#endif
-
- buf = (unsigned char *)s->init_buf->data;
- if (s->state == SSL23_ST_CW_CLNT_HELLO_A) {
- p = s->s3->client_random;
- if (ssl_fill_hello_random(s, 0, p, SSL3_RANDOM_SIZE) <= 0)
- return -1;
-
- if (version == TLS1_2_VERSION) {
- version_major = TLS1_2_VERSION_MAJOR;
- version_minor = TLS1_2_VERSION_MINOR;
- } else if (tls1_suiteb(s)) {
- SSLerr(SSL_F_SSL23_CLIENT_HELLO,
- SSL_R_ONLY_TLS_1_2_ALLOWED_IN_SUITEB_MODE);
- return -1;
- } else if (version == TLS1_1_VERSION) {
- version_major = TLS1_1_VERSION_MAJOR;
- version_minor = TLS1_1_VERSION_MINOR;
- } else if (version == TLS1_VERSION) {
- version_major = TLS1_VERSION_MAJOR;
- version_minor = TLS1_VERSION_MINOR;
- } else if (FIPS_mode()) {
- SSLerr(SSL_F_SSL23_CLIENT_HELLO,
- SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
- return -1;
- } else if (version == SSL3_VERSION) {
- version_major = SSL3_VERSION_MAJOR;
- version_minor = SSL3_VERSION_MINOR;
- } else {
- SSLerr(SSL_F_SSL23_CLIENT_HELLO, SSL_R_NO_PROTOCOLS_AVAILABLE);
- return (-1);
- }
-
- s->client_version = version;
-
- /* create Client Hello in SSL 3.0/TLS 1.0 format */
-
- /*
- * do the record header (5 bytes) and handshake message header (4
- * bytes) last
- */
- d = p = &(buf[9]);
-
- *(p++) = version_major;
- *(p++) = version_minor;
-
- /* Random stuff */
- memcpy(p, s->s3->client_random, SSL3_RANDOM_SIZE);
- p += SSL3_RANDOM_SIZE;
-
- /* Session ID (zero since there is no reuse) */
- *(p++) = 0;
-
- /* Ciphers supported (using SSL 3.0/TLS 1.0 format) */
- i = ssl_cipher_list_to_bytes(s, SSL_get_ciphers(s), &(p[2]),
- ssl3_put_cipher_by_char);
- if (i == 0) {
- SSLerr(SSL_F_SSL23_CLIENT_HELLO, SSL_R_NO_CIPHERS_AVAILABLE);
- return -1;
- }
-#ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
- /*
- * Some servers hang if client hello > 256 bytes as hack workaround
- * chop number of supported ciphers to keep it well below this if we
- * use TLS v1.2
- */
- if (TLS1_get_version(s) >= TLS1_2_VERSION
- && i > OPENSSL_MAX_TLS1_2_CIPHER_LENGTH)
- i = OPENSSL_MAX_TLS1_2_CIPHER_LENGTH & ~1;
-#endif
- s2n(i, p);
- p += i;
-
- /* COMPRESSION */
-#ifdef OPENSSL_NO_COMP
- *(p++) = 1;
-#else
- if (!ssl_allow_compression(s) || !s->ctx->comp_methods)
- j = 0;
- else
- j = sk_SSL_COMP_num(s->ctx->comp_methods);
- *(p++) = 1 + j;
- for (i = 0; i < j; i++) {
- comp = sk_SSL_COMP_value(s->ctx->comp_methods, i);
- *(p++) = comp->id;
- }
-#endif
- *(p++) = 0; /* Add the NULL method */
-
-#ifndef OPENSSL_NO_TLSEXT
- /* TLS extensions */
- if (ssl_prepare_clienthello_tlsext(s) <= 0) {
- SSLerr(SSL_F_SSL23_CLIENT_HELLO, SSL_R_CLIENTHELLO_TLSEXT);
- return -1;
- }
- if ((p =
- ssl_add_clienthello_tlsext(s, p, buf + SSL3_RT_MAX_PLAIN_LENGTH,
- &al)) == NULL) {
- ssl3_send_alert(s, SSL3_AL_FATAL, al);
- SSLerr(SSL_F_SSL23_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
- return -1;
- }
-#endif
-
- l = p - d;
-
- /* fill in 4-byte handshake header */
- d = &(buf[5]);
- *(d++) = SSL3_MT_CLIENT_HELLO;
- l2n3(l, d);
-
- l += 4;
-
- if (l > SSL3_RT_MAX_PLAIN_LENGTH) {
- SSLerr(SSL_F_SSL23_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
- return -1;
- }
-
- /* fill in 5-byte record header */
- d = buf;
- *(d++) = SSL3_RT_HANDSHAKE;
- *(d++) = version_major;
- /*
- * Some servers hang if we use long client hellos and a record number
- * > TLS 1.0.
- */
- if (TLS1_get_client_version(s) > TLS1_VERSION)
- *(d++) = 1;
- else
- *(d++) = version_minor;
- s2n((int)l, d);
-
- /* number of bytes to write */
- s->init_num = p - buf;
- s->init_off = 0;
-
- ssl3_finish_mac(s, &(buf[5]), s->init_num - 5);
-
- s->state = SSL23_ST_CW_CLNT_HELLO_B;
- s->init_off = 0;
- }
-
- /* SSL3_ST_CW_CLNT_HELLO_B */
- ret = ssl23_write_bytes(s);
-
- if ((ret >= 2) && s->msg_callback) {
- /* Client Hello has been sent; tell msg_callback */
- s->msg_callback(1, version, SSL3_RT_HEADER, s->init_buf->data, 5, s,
- s->msg_callback_arg);
- s->msg_callback(1, version, SSL3_RT_HANDSHAKE, s->init_buf->data + 5,
- ret - 5, s, s->msg_callback_arg);
- }
-
- return ret;
-}
-
-static int ssl23_get_server_hello(SSL *s)
-{
- unsigned char buf[8];
- unsigned char *p;
- int i;
- int n;
-
- n = ssl23_read_bytes(s, 7);
-
- if (n != 7)
- return (n);
- p = RECORD_LAYER_get_packet(&s->rlayer);
-
- memcpy(buf, p, n);
-
- if (p[1] == SSL3_VERSION_MAJOR &&
- p[2] <= TLS1_2_VERSION_MINOR &&
- ((p[0] == SSL3_RT_HANDSHAKE && p[5] == SSL3_MT_SERVER_HELLO) ||
- (p[0] == SSL3_RT_ALERT && p[3] == 0 && p[4] == 2))) {
- /* we have sslv3 or tls1 (server hello or alert) */
-
-#ifndef OPENSSL_NO_SSL3
- if ((p[2] == SSL3_VERSION_MINOR) && !(s->options & SSL_OP_NO_SSLv3)) {
- if (FIPS_mode()) {
- SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,
- SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
- goto err;
- }
- s->version = SSL3_VERSION;
- s->method = SSLv3_client_method();
- } else
-#endif
- if ((p[2] == TLS1_VERSION_MINOR) && !(s->options & SSL_OP_NO_TLSv1)) {
- s->version = TLS1_VERSION;
- s->method = TLSv1_client_method();
- } else if ((p[2] == TLS1_1_VERSION_MINOR) &&
- !(s->options & SSL_OP_NO_TLSv1_1)) {
- s->version = TLS1_1_VERSION;
- s->method = TLSv1_1_client_method();
- } else if ((p[2] == TLS1_2_VERSION_MINOR) &&
- !(s->options & SSL_OP_NO_TLSv1_2)) {
- s->version = TLS1_2_VERSION;
- s->method = TLSv1_2_client_method();
- } else {
- SSLerr(SSL_F_SSL23_GET_SERVER_HELLO, SSL_R_UNSUPPORTED_PROTOCOL);
- goto err;
- }
-
- /* ensure that TLS_MAX_VERSION is up-to-date */
- OPENSSL_assert(s->version <= TLS_MAX_VERSION);
-
- if (!ssl_security(s, SSL_SECOP_VERSION, 0, s->version, NULL)) {
- SSLerr(SSL_F_SSL23_GET_SERVER_HELLO, SSL_R_VERSION_TOO_LOW);
- goto err;
- }
-
- if (p[0] == SSL3_RT_ALERT && p[5] != SSL3_AL_WARNING) {
- /* fatal alert */
-
- void (*cb) (const SSL *ssl, int type, int val) = NULL;
- int j;
-
- if (s->info_callback != NULL)
- cb = s->info_callback;
- else if (s->ctx->info_callback != NULL)
- cb = s->ctx->info_callback;
-
- i = p[5];
- if (cb != NULL) {
- j = (i << 8) | p[6];
- cb(s, SSL_CB_READ_ALERT, j);
- }
-
- if (s->msg_callback) {
- s->msg_callback(0, s->version, SSL3_RT_HEADER, p, 5, s,
- s->msg_callback_arg);
- s->msg_callback(0, s->version, SSL3_RT_ALERT, p + 5, 2, s,
- s->msg_callback_arg);
- }
-
- s->rwstate = SSL_NOTHING;
- SSLerr(SSL_F_SSL23_GET_SERVER_HELLO, SSL_AD_REASON_OFFSET + p[6]);
- goto err;
- }
-
- if (!ssl_init_wbio_buffer(s, 1))
- goto err;
-
- /* we are in this state */
- s->state = SSL3_ST_CR_SRVR_HELLO_A;
-
- /*
- * put the 7 bytes we have read into the input buffer for SSLv3
- */
- if (!RECORD_LAYER_set_data(&s->rlayer, buf, n))
- goto err;
-
- s->handshake_func = s->method->ssl_connect;
- } else {
- SSLerr(SSL_F_SSL23_GET_SERVER_HELLO, SSL_R_UNKNOWN_PROTOCOL);
- goto err;
- }
- s->init_num = 0;
-
- /*
- * Since, if we are sending a ssl23 client hello, we are not reusing a
- * session-id
- */
- if (!ssl_get_new_session(s, 0))
- goto err;
-
- return (SSL_connect(s));
- err:
- return (-1);
-}
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