* 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:
* 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
+ * 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
* 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 "buffer.h"
-#include "rand.h"
-#include "objects.h"
-#include "evp.h"
#include "ssl_locl.h"
+#include <openssl/buffer.h>
+#include <openssl/rand.h>
+#include <openssl/objects.h>
+#include <openssl/evp.h>
-#define BREAK break
-
-#ifndef NOPROTO
-static SSL_METHOD *ssl23_get_client_method(int ver);
+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);
-#else
-static SSL_METHOD *ssl23_get_client_method();
-static int ssl23_client_hello();
-static int ssl23_get_server_hello();
+static const SSL_METHOD *ssl23_get_client_method(int ver)
+{
+#ifndef OPENSSL_NO_SSL3
+ if (ver == SSL3_VERSION)
+ return (SSLv3_client_method());
#endif
-
-static SSL_METHOD *ssl23_get_client_method(int ver)
- {
- if (ver == SSL2_VERSION)
- return(SSLv2_client_method());
- else if (ver == SSL3_VERSION)
- return(SSLv3_client_method());
- else if (ver == TLS1_VERSION)
- return(TLSv1_client_method());
- else
- return(NULL);
- }
-
-SSL_METHOD *SSLv23_client_method(void)
- {
- static int init=1;
- static SSL_METHOD SSLv23_client_data;
-
- if (init)
- {
- init=0;
- memcpy((char *)&SSLv23_client_data,
- (char *)sslv23_base_method(),sizeof(SSL_METHOD));
- SSLv23_client_data.ssl_connect=ssl23_connect;
- SSLv23_client_data.get_ssl_method=ssl23_get_client_method;
- }
- return(&SSLv23_client_data);
- }
+ 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;
- unsigned long Time=time(NULL);
- void (*cb)()=NULL;
- int ret= -1;
- int new_state,state;
-
- RAND_seed(&Time,sizeof(Time));
- 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;
-
- if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
- s->in_handshake++;
-
- 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;
- }
-
- 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) 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 (cb != NULL)
- cb(s,SSL_CB_CONNECT_EXIT,ret);
- return(ret);
- }
-
+{
+ 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--;
+ if (buf != NULL)
+ 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,ch_len;
-
- buf=(unsigned char *)s->init_buf->data;
- if (s->state == SSL23_ST_CW_CLNT_HELLO_A)
- {
-#if 0
- /* don't reuse session-id's */
- if (!ssl_get_new_session(s,0))
- {
- return(-1);
- }
+{
+ 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;
- p=s->s3->client_random;
- RAND_bytes(p,SSL3_RANDOM_SIZE);
-
- /* Do the message type and length last */
- d= &(buf[2]);
- p=d+9;
-
- *(d++)=SSL2_MT_CLIENT_HELLO;
- if (!(s->options & SSL_OP_NO_TLSv1))
- {
- *(d++)=TLS1_VERSION_MAJOR;
- *(d++)=TLS1_VERSION_MINOR;
- s->client_version=TLS1_VERSION;
- }
- else if (!(s->options & SSL_OP_NO_SSLv3))
- {
- *(d++)=SSL3_VERSION_MAJOR;
- *(d++)=SSL3_VERSION_MINOR;
- s->client_version=SSL3_VERSION;
- }
- else if (!(s->options & SSL_OP_NO_SSLv2))
- {
- *(d++)=SSL2_VERSION_MAJOR;
- *(d++)=SSL2_VERSION_MINOR;
- s->client_version=SSL2_VERSION;
- }
- else
- {
- SSLerr(SSL_F_SSL23_CLIENT_HELLO,SSL_R_NO_PROTOCOLS_AVAILABLE);
- return(-1);
- }
-
- /* Ciphers supported */
- i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),p);
- 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, zero since there is no
- * reuse. */
-#if 0
- s->session->session_id_length=0;
+ 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
- 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 */
- 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);
- RAND_bytes(&(s->s3->client_random[SSL3_RANDOM_SIZE-i]),i);
- 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);
-
- s->state=SSL23_ST_CW_CLNT_HELLO_B;
- /* number of bytes to write */
- s->init_num=i+2;
- s->init_off=0;
-
- ssl3_finish_mac(s,&(buf[2]),i);
- }
-
- /* SSL3_ST_CW_CLNT_HELLO_B */
- return(ssl23_write_bytes(s));
- }
-static int ssl23_get_server_hello(SSL *s)
- {
- char buf[8];
- unsigned char *p;
- int i,ch_len;
- 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))
- {
- /* we are talking sslv2 */
- /* we need to clean up the SSLv3 setup and put in the
- * sslv2 stuff. */
-
- 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 */
- 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(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;
- s->s2->ssl2_rollback=1;
-
- /* setup the 5 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;
- }
- else if ((p[0] == SSL3_RT_HANDSHAKE) &&
- (p[1] == SSL3_VERSION_MAJOR) &&
- ((p[2] == SSL3_VERSION_MINOR) ||
- (p[2] == TLS1_VERSION_MINOR)) &&
- (p[5] == SSL3_MT_SERVER_HELLO))
- {
- /* we have sslv3 or tls1 */
-
- if (!ssl_init_wbio_buffer(s,1)) goto err;
-
- /* we are in this state */
- s->state=SSL3_ST_CR_SRVR_HELLO_A;
-
- /* put the 5 bytes we have read into the input buffer
- * for SSLv3 */
- s->rstate=SSL_ST_READ_HEADER;
- s->packet_length=n;
- s->packet= &(s->s3->rbuf.buf[0]);
- memcpy(s->packet,buf,n);
- s->s3->rbuf.left=n;
- s->s3->rbuf.offset=0;
-
- if ((p[2] == SSL3_VERSION_MINOR) &&
- !(s->options & SSL_OP_NO_SSLv3))
- {
- s->version=SSL3_VERSION;
- s->method=SSLv3_client_method();
- }
- else if ((p[2] == TLS1_VERSION_MINOR) &&
- !(s->options & SSL_OP_NO_TLSv1))
- {
- s->version=TLS1_VERSION;
- s->method=TLSv1_client_method();
- }
- else
- {
- SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
- goto err;
- }
-
- s->handshake_func=s->method->ssl_connect;
- }
- else if ((p[0] == SSL3_RT_ALERT) &&
- (p[1] == SSL3_VERSION_MAJOR) &&
- ((p[2] == SSL3_VERSION_MINOR) ||
- (p[2] == TLS1_VERSION_MINOR)) &&
- (p[3] == 0) &&
- (p[4] == 2))
- {
- void (*cb)()=NULL;
- int j;
-
- /* An alert */
- 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);
- }
-
- s->rwstate=SSL_NOTHING;
- SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_AD_REASON_OFFSET+p[6]);
- goto err;
- }
- 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;
-
- s->first_packet=1;
- return(SSL_connect(s));
-err:
- return(-1);
- }
+ 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);
+}
projects / openssl.git / blobdiff