diff options
Diffstat (limited to 'openssl/ssl/s23_clnt.c')
| -rw-r--r-- | openssl/ssl/s23_clnt.c | 802 |
1 files changed, 0 insertions, 802 deletions
diff --git a/openssl/ssl/s23_clnt.c b/openssl/ssl/s23_clnt.c deleted file mode 100644 index 6850dc0..0000000 --- a/openssl/ssl/s23_clnt.c +++ /dev/null @@ -1,802 +0,0 @@ -/* 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_SSL2 - if (ver == SSL2_VERSION) - return (SSLv2_client_method()); -#endif -#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); -} - -IMPLEMENT_ssl23_meth_func(SSLv23_client_method, - ssl_undefined_function, - ssl23_connect, ssl23_get_client_method) - -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)) - SSL_clear(s); - - 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--; - if (buf != NULL) - BUF_MEM_free(buf); - if (cb != NULL) - cb(s, SSL_CB_CONNECT_EXIT, ret); - return (ret); -} - -static int ssl23_no_ssl2_ciphers(SSL *s) -{ - SSL_CIPHER *cipher; - STACK_OF(SSL_CIPHER) *ciphers; - int i; - ciphers = SSL_get_ciphers(s); - for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { - cipher = sk_SSL_CIPHER_value(ciphers, i); - if (cipher->algorithm_ssl == SSL_SSLV2) - return 0; - } - return 1; -} - -/* - * 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, ch_len; - unsigned long l; - int ssl2_compat; - 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; - - ssl2_compat = (options & SSL_OP_NO_SSLv2) ? 0 : 1; - - if (ssl2_compat && ssl23_no_ssl2_ciphers(s)) - ssl2_compat = 0; - - /* - * 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_SSL2) - | (ssl2_compat ? SSL_OP_NO_SSLv2 : 0) -#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 -#if !defined(OPENSSL_NO_SSL2) - if ((options & SSL_OP_NO_SSLv3) && (options & mask) != mask) - version = SSL2_VERSION; -#endif - -#ifndef OPENSSL_NO_TLSEXT - if (version != SSL2_VERSION) { - /* - * have to disable SSL 2.0 compatibility if we need TLS extensions - */ - - if (s->tlsext_hostname != NULL) - ssl2_compat = 0; - if (s->tlsext_status_type != -1) - ssl2_compat = 0; -# ifdef TLSEXT_TYPE_opaque_prf_input - if (s->ctx->tlsext_opaque_prf_input_callback != 0 - || s->tlsext_opaque_prf_input != NULL) - ssl2_compat = 0; -# endif - if (s->cert->cli_ext.meths_count != 0) - ssl2_compat = 0; - } -#endif - - buf = (unsigned char *)s->init_buf->data; - if (s->state == SSL23_ST_CW_CLNT_HELLO_A) { - /* - * Since we're sending s23 client hello, we're not reusing a session, as - * we'd be using the method from the saved session instead - */ - if (!ssl_get_new_session(s, 0)) { - return -1; - } - - 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; - } -#ifdef OPENSSL_FIPS - else if (FIPS_mode()) { - SSLerr(SSL_F_SSL23_CLIENT_HELLO, - SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); - return -1; - } -#endif - else if (version == SSL3_VERSION) { - version_major = SSL3_VERSION_MAJOR; - version_minor = SSL3_VERSION_MINOR; - } else if (version == SSL2_VERSION) { - version_major = SSL2_VERSION_MAJOR; - version_minor = SSL2_VERSION_MINOR; - } else { - SSLerr(SSL_F_SSL23_CLIENT_HELLO, SSL_R_NO_PROTOCOLS_AVAILABLE); - return (-1); - } - - s->client_version = version; - - if (ssl2_compat) { - /* create SSL 2.0 compatible Client Hello */ - - /* two byte record header will be written last */ - d = &(buf[2]); - p = d + 9; /* leave space for message type, version, - * individual length fields */ - - *(d++) = SSL2_MT_CLIENT_HELLO; - *(d++) = version_major; - *(d++) = version_minor; - - /* Ciphers supported */ - i = ssl_cipher_list_to_bytes(s, SSL_get_ciphers(s), p, 0); - if (i == 0) { - /* no ciphers */ - SSLerr(SSL_F_SSL23_CLIENT_HELLO, SSL_R_NO_CIPHERS_AVAILABLE); - return -1; - } - s2n(i, d); - p += i; - - /* - * put in the session-id length (zero since there is no reuse) - */ - s2n(0, d); - - if (s->options & SSL_OP_NETSCAPE_CHALLENGE_BUG) - ch_len = SSL2_CHALLENGE_LENGTH; - else - ch_len = SSL2_MAX_CHALLENGE_LENGTH; - - /* write out sslv2 challenge */ - /* - * Note that ch_len must be <= SSL3_RANDOM_SIZE (32), because it - * is one of SSL2_MAX_CHALLENGE_LENGTH (32) or - * SSL2_MAX_CHALLENGE_LENGTH (16), but leave the check in for - * futurproofing - */ - if (SSL3_RANDOM_SIZE < ch_len) - i = SSL3_RANDOM_SIZE; - else - i = ch_len; - s2n(i, d); - memset(&(s->s3->client_random[0]), 0, SSL3_RANDOM_SIZE); - if (RAND_bytes (&(s->s3->client_random[SSL3_RANDOM_SIZE - i]), i) - <= 0) - return -1; - - memcpy(p, &(s->s3->client_random[SSL3_RANDOM_SIZE - i]), i); - p += i; - - i = p - &(buf[2]); - buf[0] = ((i >> 8) & 0xff) | 0x80; - buf[1] = (i & 0xff); - - /* number of bytes to write */ - s->init_num = i + 2; - s->init_off = 0; - - ssl3_finish_mac(s, &(buf[2]), i); - } else { - /* 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 ((s->options & SSL_OP_NO_COMPRESSION) - || !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 */ - - if (ssl2_compat) - s->msg_callback(1, SSL2_VERSION, 0, s->init_buf->data + 2, - ret - 2, s, s->msg_callback_arg); - else { - 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) -{ - char buf[8]; - unsigned char *p; - int i; - int n; - - n = ssl23_read_bytes(s, 7); - - if (n != 7) - return (n); - p = s->packet; - - memcpy(buf, p, n); - - if ((p[0] & 0x80) && (p[2] == SSL2_MT_SERVER_HELLO) && - (p[5] == 0x00) && (p[6] == 0x02)) { -#ifdef OPENSSL_NO_SSL2 - SSLerr(SSL_F_SSL23_GET_SERVER_HELLO, SSL_R_UNSUPPORTED_PROTOCOL); - goto err; -#else - /* we are talking sslv2 */ - /* - * we need to clean up the SSLv3 setup and put in the sslv2 stuff. - */ - int ch_len; - - if (s->options & SSL_OP_NO_SSLv2) { - SSLerr(SSL_F_SSL23_GET_SERVER_HELLO, SSL_R_UNSUPPORTED_PROTOCOL); - goto err; - } - if (s->s2 == NULL) { - if (!ssl2_new(s)) - goto err; - } else - ssl2_clear(s); - - if (s->options & SSL_OP_NETSCAPE_CHALLENGE_BUG) - ch_len = SSL2_CHALLENGE_LENGTH; - else - ch_len = SSL2_MAX_CHALLENGE_LENGTH; - - /* write out sslv2 challenge */ - /* - * Note that ch_len must be <= SSL3_RANDOM_SIZE (32), because it is - * one of SSL2_MAX_CHALLENGE_LENGTH (32) or SSL2_MAX_CHALLENGE_LENGTH - * (16), but leave the check in for futurproofing - */ - i = (SSL3_RANDOM_SIZE < ch_len) - ? SSL3_RANDOM_SIZE : ch_len; - s->s2->challenge_length = i; - memcpy(s->s2->challenge, - &(s->s3->client_random[SSL3_RANDOM_SIZE - i]), i); - - if (s->s3 != NULL) - ssl3_free(s); - - if (!BUF_MEM_grow_clean(s->init_buf, - SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)) { - SSLerr(SSL_F_SSL23_GET_SERVER_HELLO, ERR_R_BUF_LIB); - goto err; - } - - s->state = SSL2_ST_GET_SERVER_HELLO_A; - if (!(s->client_version == SSL2_VERSION)) - /* - * use special padding (SSL 3.0 draft/RFC 2246, App. E.2) - */ - s->s2->ssl2_rollback = 1; - - /* - * setup the 7 bytes we have read so we get them from the sslv2 - * buffer - */ - s->rstate = SSL_ST_READ_HEADER; - s->packet_length = n; - s->packet = &(s->s2->rbuf[0]); - memcpy(s->packet, buf, n); - s->s2->rbuf_left = n; - s->s2->rbuf_offs = 0; - - /* we have already written one */ - s->s2->write_sequence = 1; - - s->method = SSLv2_client_method(); - s->handshake_func = s->method->ssl_connect; -#endif - } else 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)) { -# ifdef OPENSSL_FIPS - if (FIPS_mode()) { - SSLerr(SSL_F_SSL23_GET_SERVER_HELLO, - SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); - goto err; - } -# endif - 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; - } - - s->session->ssl_version = s->version; - - /* ensure that TLS_MAX_VERSION is up-to-date */ - OPENSSL_assert(s->version <= TLS_MAX_VERSION); - - 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 - */ - s->rstate = SSL_ST_READ_HEADER; - s->packet_length = n; - if (s->s3->rbuf.buf == NULL) - if (!ssl3_setup_read_buffer(s)) - goto err; - s->packet = &(s->s3->rbuf.buf[0]); - memcpy(s->packet, buf, n); - s->s3->rbuf.left = n; - s->s3->rbuf.offset = 0; - - 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; - - return (SSL_connect(s)); - err: - return (-1); -} |