1*0Sstevel@tonic-gate /* ssl/s23_clnt.c */ 2*0Sstevel@tonic-gate /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3*0Sstevel@tonic-gate * All rights reserved. 4*0Sstevel@tonic-gate * 5*0Sstevel@tonic-gate * This package is an SSL implementation written 6*0Sstevel@tonic-gate * by Eric Young (eay@cryptsoft.com). 7*0Sstevel@tonic-gate * The implementation was written so as to conform with Netscapes SSL. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * This library is free for commercial and non-commercial use as long as 10*0Sstevel@tonic-gate * the following conditions are aheared to. The following conditions 11*0Sstevel@tonic-gate * apply to all code found in this distribution, be it the RC4, RSA, 12*0Sstevel@tonic-gate * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13*0Sstevel@tonic-gate * included with this distribution is covered by the same copyright terms 14*0Sstevel@tonic-gate * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15*0Sstevel@tonic-gate * 16*0Sstevel@tonic-gate * Copyright remains Eric Young's, and as such any Copyright notices in 17*0Sstevel@tonic-gate * the code are not to be removed. 18*0Sstevel@tonic-gate * If this package is used in a product, Eric Young should be given attribution 19*0Sstevel@tonic-gate * as the author of the parts of the library used. 20*0Sstevel@tonic-gate * This can be in the form of a textual message at program startup or 21*0Sstevel@tonic-gate * in documentation (online or textual) provided with the package. 22*0Sstevel@tonic-gate * 23*0Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without 24*0Sstevel@tonic-gate * modification, are permitted provided that the following conditions 25*0Sstevel@tonic-gate * are met: 26*0Sstevel@tonic-gate * 1. Redistributions of source code must retain the copyright 27*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer. 28*0Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright 29*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in the 30*0Sstevel@tonic-gate * documentation and/or other materials provided with the distribution. 31*0Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this software 32*0Sstevel@tonic-gate * must display the following acknowledgement: 33*0Sstevel@tonic-gate * "This product includes cryptographic software written by 34*0Sstevel@tonic-gate * Eric Young (eay@cryptsoft.com)" 35*0Sstevel@tonic-gate * The word 'cryptographic' can be left out if the rouines from the library 36*0Sstevel@tonic-gate * being used are not cryptographic related :-). 37*0Sstevel@tonic-gate * 4. If you include any Windows specific code (or a derivative thereof) from 38*0Sstevel@tonic-gate * the apps directory (application code) you must include an acknowledgement: 39*0Sstevel@tonic-gate * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40*0Sstevel@tonic-gate * 41*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42*0Sstevel@tonic-gate * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43*0Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44*0Sstevel@tonic-gate * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45*0Sstevel@tonic-gate * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46*0Sstevel@tonic-gate * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47*0Sstevel@tonic-gate * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48*0Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49*0Sstevel@tonic-gate * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50*0Sstevel@tonic-gate * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51*0Sstevel@tonic-gate * SUCH DAMAGE. 52*0Sstevel@tonic-gate * 53*0Sstevel@tonic-gate * The licence and distribution terms for any publically available version or 54*0Sstevel@tonic-gate * derivative of this code cannot be changed. i.e. this code cannot simply be 55*0Sstevel@tonic-gate * copied and put under another distribution licence 56*0Sstevel@tonic-gate * [including the GNU Public Licence.] 57*0Sstevel@tonic-gate */ 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate #include <stdio.h> 60*0Sstevel@tonic-gate #include "ssl_locl.h" 61*0Sstevel@tonic-gate #include <openssl/buffer.h> 62*0Sstevel@tonic-gate #include <openssl/rand.h> 63*0Sstevel@tonic-gate #include <openssl/objects.h> 64*0Sstevel@tonic-gate #include <openssl/evp.h> 65*0Sstevel@tonic-gate 66*0Sstevel@tonic-gate static SSL_METHOD *ssl23_get_client_method(int ver); 67*0Sstevel@tonic-gate static int ssl23_client_hello(SSL *s); 68*0Sstevel@tonic-gate static int ssl23_get_server_hello(SSL *s); 69*0Sstevel@tonic-gate static SSL_METHOD *ssl23_get_client_method(int ver) 70*0Sstevel@tonic-gate { 71*0Sstevel@tonic-gate #ifndef OPENSSL_NO_SSL2 72*0Sstevel@tonic-gate if (ver == SSL2_VERSION) 73*0Sstevel@tonic-gate return(SSLv2_client_method()); 74*0Sstevel@tonic-gate #endif 75*0Sstevel@tonic-gate if (ver == SSL3_VERSION) 76*0Sstevel@tonic-gate return(SSLv3_client_method()); 77*0Sstevel@tonic-gate else if (ver == TLS1_VERSION) 78*0Sstevel@tonic-gate return(TLSv1_client_method()); 79*0Sstevel@tonic-gate else 80*0Sstevel@tonic-gate return(NULL); 81*0Sstevel@tonic-gate } 82*0Sstevel@tonic-gate 83*0Sstevel@tonic-gate SSL_METHOD *SSLv23_client_method(void) 84*0Sstevel@tonic-gate { 85*0Sstevel@tonic-gate static int init=1; 86*0Sstevel@tonic-gate static SSL_METHOD SSLv23_client_data; 87*0Sstevel@tonic-gate 88*0Sstevel@tonic-gate if (init) 89*0Sstevel@tonic-gate { 90*0Sstevel@tonic-gate CRYPTO_w_lock(CRYPTO_LOCK_SSL_METHOD); 91*0Sstevel@tonic-gate 92*0Sstevel@tonic-gate if (init) 93*0Sstevel@tonic-gate { 94*0Sstevel@tonic-gate memcpy((char *)&SSLv23_client_data, 95*0Sstevel@tonic-gate (char *)sslv23_base_method(),sizeof(SSL_METHOD)); 96*0Sstevel@tonic-gate SSLv23_client_data.ssl_connect=ssl23_connect; 97*0Sstevel@tonic-gate SSLv23_client_data.get_ssl_method=ssl23_get_client_method; 98*0Sstevel@tonic-gate init=0; 99*0Sstevel@tonic-gate } 100*0Sstevel@tonic-gate 101*0Sstevel@tonic-gate CRYPTO_w_unlock(CRYPTO_LOCK_SSL_METHOD); 102*0Sstevel@tonic-gate } 103*0Sstevel@tonic-gate return(&SSLv23_client_data); 104*0Sstevel@tonic-gate } 105*0Sstevel@tonic-gate 106*0Sstevel@tonic-gate int ssl23_connect(SSL *s) 107*0Sstevel@tonic-gate { 108*0Sstevel@tonic-gate BUF_MEM *buf=NULL; 109*0Sstevel@tonic-gate unsigned long Time=time(NULL); 110*0Sstevel@tonic-gate void (*cb)(const SSL *ssl,int type,int val)=NULL; 111*0Sstevel@tonic-gate int ret= -1; 112*0Sstevel@tonic-gate int new_state,state; 113*0Sstevel@tonic-gate 114*0Sstevel@tonic-gate RAND_add(&Time,sizeof(Time),0); 115*0Sstevel@tonic-gate ERR_clear_error(); 116*0Sstevel@tonic-gate clear_sys_error(); 117*0Sstevel@tonic-gate 118*0Sstevel@tonic-gate if (s->info_callback != NULL) 119*0Sstevel@tonic-gate cb=s->info_callback; 120*0Sstevel@tonic-gate else if (s->ctx->info_callback != NULL) 121*0Sstevel@tonic-gate cb=s->ctx->info_callback; 122*0Sstevel@tonic-gate 123*0Sstevel@tonic-gate s->in_handshake++; 124*0Sstevel@tonic-gate if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s); 125*0Sstevel@tonic-gate 126*0Sstevel@tonic-gate for (;;) 127*0Sstevel@tonic-gate { 128*0Sstevel@tonic-gate state=s->state; 129*0Sstevel@tonic-gate 130*0Sstevel@tonic-gate switch(s->state) 131*0Sstevel@tonic-gate { 132*0Sstevel@tonic-gate case SSL_ST_BEFORE: 133*0Sstevel@tonic-gate case SSL_ST_CONNECT: 134*0Sstevel@tonic-gate case SSL_ST_BEFORE|SSL_ST_CONNECT: 135*0Sstevel@tonic-gate case SSL_ST_OK|SSL_ST_CONNECT: 136*0Sstevel@tonic-gate 137*0Sstevel@tonic-gate if (s->session != NULL) 138*0Sstevel@tonic-gate { 139*0Sstevel@tonic-gate SSLerr(SSL_F_SSL23_CONNECT,SSL_R_SSL23_DOING_SESSION_ID_REUSE); 140*0Sstevel@tonic-gate ret= -1; 141*0Sstevel@tonic-gate goto end; 142*0Sstevel@tonic-gate } 143*0Sstevel@tonic-gate s->server=0; 144*0Sstevel@tonic-gate if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1); 145*0Sstevel@tonic-gate 146*0Sstevel@tonic-gate /* s->version=TLS1_VERSION; */ 147*0Sstevel@tonic-gate s->type=SSL_ST_CONNECT; 148*0Sstevel@tonic-gate 149*0Sstevel@tonic-gate if (s->init_buf == NULL) 150*0Sstevel@tonic-gate { 151*0Sstevel@tonic-gate if ((buf=BUF_MEM_new()) == NULL) 152*0Sstevel@tonic-gate { 153*0Sstevel@tonic-gate ret= -1; 154*0Sstevel@tonic-gate goto end; 155*0Sstevel@tonic-gate } 156*0Sstevel@tonic-gate if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH)) 157*0Sstevel@tonic-gate { 158*0Sstevel@tonic-gate ret= -1; 159*0Sstevel@tonic-gate goto end; 160*0Sstevel@tonic-gate } 161*0Sstevel@tonic-gate s->init_buf=buf; 162*0Sstevel@tonic-gate buf=NULL; 163*0Sstevel@tonic-gate } 164*0Sstevel@tonic-gate 165*0Sstevel@tonic-gate if (!ssl3_setup_buffers(s)) { ret= -1; goto end; } 166*0Sstevel@tonic-gate 167*0Sstevel@tonic-gate ssl3_init_finished_mac(s); 168*0Sstevel@tonic-gate 169*0Sstevel@tonic-gate s->state=SSL23_ST_CW_CLNT_HELLO_A; 170*0Sstevel@tonic-gate s->ctx->stats.sess_connect++; 171*0Sstevel@tonic-gate s->init_num=0; 172*0Sstevel@tonic-gate break; 173*0Sstevel@tonic-gate 174*0Sstevel@tonic-gate case SSL23_ST_CW_CLNT_HELLO_A: 175*0Sstevel@tonic-gate case SSL23_ST_CW_CLNT_HELLO_B: 176*0Sstevel@tonic-gate 177*0Sstevel@tonic-gate s->shutdown=0; 178*0Sstevel@tonic-gate ret=ssl23_client_hello(s); 179*0Sstevel@tonic-gate if (ret <= 0) goto end; 180*0Sstevel@tonic-gate s->state=SSL23_ST_CR_SRVR_HELLO_A; 181*0Sstevel@tonic-gate s->init_num=0; 182*0Sstevel@tonic-gate 183*0Sstevel@tonic-gate break; 184*0Sstevel@tonic-gate 185*0Sstevel@tonic-gate case SSL23_ST_CR_SRVR_HELLO_A: 186*0Sstevel@tonic-gate case SSL23_ST_CR_SRVR_HELLO_B: 187*0Sstevel@tonic-gate ret=ssl23_get_server_hello(s); 188*0Sstevel@tonic-gate if (ret >= 0) cb=NULL; 189*0Sstevel@tonic-gate goto end; 190*0Sstevel@tonic-gate /* break; */ 191*0Sstevel@tonic-gate 192*0Sstevel@tonic-gate default: 193*0Sstevel@tonic-gate SSLerr(SSL_F_SSL23_CONNECT,SSL_R_UNKNOWN_STATE); 194*0Sstevel@tonic-gate ret= -1; 195*0Sstevel@tonic-gate goto end; 196*0Sstevel@tonic-gate /* break; */ 197*0Sstevel@tonic-gate } 198*0Sstevel@tonic-gate 199*0Sstevel@tonic-gate if (s->debug) { (void)BIO_flush(s->wbio); } 200*0Sstevel@tonic-gate 201*0Sstevel@tonic-gate if ((cb != NULL) && (s->state != state)) 202*0Sstevel@tonic-gate { 203*0Sstevel@tonic-gate new_state=s->state; 204*0Sstevel@tonic-gate s->state=state; 205*0Sstevel@tonic-gate cb(s,SSL_CB_CONNECT_LOOP,1); 206*0Sstevel@tonic-gate s->state=new_state; 207*0Sstevel@tonic-gate } 208*0Sstevel@tonic-gate } 209*0Sstevel@tonic-gate end: 210*0Sstevel@tonic-gate s->in_handshake--; 211*0Sstevel@tonic-gate if (buf != NULL) 212*0Sstevel@tonic-gate BUF_MEM_free(buf); 213*0Sstevel@tonic-gate if (cb != NULL) 214*0Sstevel@tonic-gate cb(s,SSL_CB_CONNECT_EXIT,ret); 215*0Sstevel@tonic-gate return(ret); 216*0Sstevel@tonic-gate } 217*0Sstevel@tonic-gate 218*0Sstevel@tonic-gate 219*0Sstevel@tonic-gate static int ssl23_client_hello(SSL *s) 220*0Sstevel@tonic-gate { 221*0Sstevel@tonic-gate unsigned char *buf; 222*0Sstevel@tonic-gate unsigned char *p,*d; 223*0Sstevel@tonic-gate int i,ch_len; 224*0Sstevel@tonic-gate int ret; 225*0Sstevel@tonic-gate 226*0Sstevel@tonic-gate buf=(unsigned char *)s->init_buf->data; 227*0Sstevel@tonic-gate if (s->state == SSL23_ST_CW_CLNT_HELLO_A) 228*0Sstevel@tonic-gate { 229*0Sstevel@tonic-gate #if 0 230*0Sstevel@tonic-gate /* don't reuse session-id's */ 231*0Sstevel@tonic-gate if (!ssl_get_new_session(s,0)) 232*0Sstevel@tonic-gate { 233*0Sstevel@tonic-gate return(-1); 234*0Sstevel@tonic-gate } 235*0Sstevel@tonic-gate #endif 236*0Sstevel@tonic-gate 237*0Sstevel@tonic-gate p=s->s3->client_random; 238*0Sstevel@tonic-gate RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE); 239*0Sstevel@tonic-gate 240*0Sstevel@tonic-gate /* Do the message type and length last */ 241*0Sstevel@tonic-gate d= &(buf[2]); 242*0Sstevel@tonic-gate p=d+9; 243*0Sstevel@tonic-gate 244*0Sstevel@tonic-gate *(d++)=SSL2_MT_CLIENT_HELLO; 245*0Sstevel@tonic-gate if (!(s->options & SSL_OP_NO_TLSv1)) 246*0Sstevel@tonic-gate { 247*0Sstevel@tonic-gate *(d++)=TLS1_VERSION_MAJOR; 248*0Sstevel@tonic-gate *(d++)=TLS1_VERSION_MINOR; 249*0Sstevel@tonic-gate s->client_version=TLS1_VERSION; 250*0Sstevel@tonic-gate } 251*0Sstevel@tonic-gate else if (!(s->options & SSL_OP_NO_SSLv3)) 252*0Sstevel@tonic-gate { 253*0Sstevel@tonic-gate *(d++)=SSL3_VERSION_MAJOR; 254*0Sstevel@tonic-gate *(d++)=SSL3_VERSION_MINOR; 255*0Sstevel@tonic-gate s->client_version=SSL3_VERSION; 256*0Sstevel@tonic-gate } 257*0Sstevel@tonic-gate else if (!(s->options & SSL_OP_NO_SSLv2)) 258*0Sstevel@tonic-gate { 259*0Sstevel@tonic-gate *(d++)=SSL2_VERSION_MAJOR; 260*0Sstevel@tonic-gate *(d++)=SSL2_VERSION_MINOR; 261*0Sstevel@tonic-gate s->client_version=SSL2_VERSION; 262*0Sstevel@tonic-gate } 263*0Sstevel@tonic-gate else 264*0Sstevel@tonic-gate { 265*0Sstevel@tonic-gate SSLerr(SSL_F_SSL23_CLIENT_HELLO,SSL_R_NO_PROTOCOLS_AVAILABLE); 266*0Sstevel@tonic-gate return(-1); 267*0Sstevel@tonic-gate } 268*0Sstevel@tonic-gate 269*0Sstevel@tonic-gate /* Ciphers supported */ 270*0Sstevel@tonic-gate i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),p); 271*0Sstevel@tonic-gate if (i == 0) 272*0Sstevel@tonic-gate { 273*0Sstevel@tonic-gate /* no ciphers */ 274*0Sstevel@tonic-gate SSLerr(SSL_F_SSL23_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE); 275*0Sstevel@tonic-gate return(-1); 276*0Sstevel@tonic-gate } 277*0Sstevel@tonic-gate s2n(i,d); 278*0Sstevel@tonic-gate p+=i; 279*0Sstevel@tonic-gate 280*0Sstevel@tonic-gate /* put in the session-id, zero since there is no 281*0Sstevel@tonic-gate * reuse. */ 282*0Sstevel@tonic-gate #if 0 283*0Sstevel@tonic-gate s->session->session_id_length=0; 284*0Sstevel@tonic-gate #endif 285*0Sstevel@tonic-gate s2n(0,d); 286*0Sstevel@tonic-gate 287*0Sstevel@tonic-gate if (s->options & SSL_OP_NETSCAPE_CHALLENGE_BUG) 288*0Sstevel@tonic-gate ch_len=SSL2_CHALLENGE_LENGTH; 289*0Sstevel@tonic-gate else 290*0Sstevel@tonic-gate ch_len=SSL2_MAX_CHALLENGE_LENGTH; 291*0Sstevel@tonic-gate 292*0Sstevel@tonic-gate /* write out sslv2 challenge */ 293*0Sstevel@tonic-gate if (SSL3_RANDOM_SIZE < ch_len) 294*0Sstevel@tonic-gate i=SSL3_RANDOM_SIZE; 295*0Sstevel@tonic-gate else 296*0Sstevel@tonic-gate i=ch_len; 297*0Sstevel@tonic-gate s2n(i,d); 298*0Sstevel@tonic-gate memset(&(s->s3->client_random[0]),0,SSL3_RANDOM_SIZE); 299*0Sstevel@tonic-gate RAND_pseudo_bytes(&(s->s3->client_random[SSL3_RANDOM_SIZE-i]),i); 300*0Sstevel@tonic-gate memcpy(p,&(s->s3->client_random[SSL3_RANDOM_SIZE-i]),i); 301*0Sstevel@tonic-gate p+=i; 302*0Sstevel@tonic-gate 303*0Sstevel@tonic-gate i= p- &(buf[2]); 304*0Sstevel@tonic-gate buf[0]=((i>>8)&0xff)|0x80; 305*0Sstevel@tonic-gate buf[1]=(i&0xff); 306*0Sstevel@tonic-gate 307*0Sstevel@tonic-gate s->state=SSL23_ST_CW_CLNT_HELLO_B; 308*0Sstevel@tonic-gate /* number of bytes to write */ 309*0Sstevel@tonic-gate s->init_num=i+2; 310*0Sstevel@tonic-gate s->init_off=0; 311*0Sstevel@tonic-gate 312*0Sstevel@tonic-gate ssl3_finish_mac(s,&(buf[2]),i); 313*0Sstevel@tonic-gate } 314*0Sstevel@tonic-gate 315*0Sstevel@tonic-gate /* SSL3_ST_CW_CLNT_HELLO_B */ 316*0Sstevel@tonic-gate ret = ssl23_write_bytes(s); 317*0Sstevel@tonic-gate if (ret >= 2) 318*0Sstevel@tonic-gate if (s->msg_callback) 319*0Sstevel@tonic-gate s->msg_callback(1, SSL2_VERSION, 0, s->init_buf->data+2, ret-2, s, s->msg_callback_arg); /* CLIENT-HELLO */ 320*0Sstevel@tonic-gate return ret; 321*0Sstevel@tonic-gate } 322*0Sstevel@tonic-gate 323*0Sstevel@tonic-gate static int ssl23_get_server_hello(SSL *s) 324*0Sstevel@tonic-gate { 325*0Sstevel@tonic-gate char buf[8]; 326*0Sstevel@tonic-gate unsigned char *p; 327*0Sstevel@tonic-gate int i; 328*0Sstevel@tonic-gate int n; 329*0Sstevel@tonic-gate 330*0Sstevel@tonic-gate n=ssl23_read_bytes(s,7); 331*0Sstevel@tonic-gate 332*0Sstevel@tonic-gate if (n != 7) return(n); 333*0Sstevel@tonic-gate p=s->packet; 334*0Sstevel@tonic-gate 335*0Sstevel@tonic-gate memcpy(buf,p,n); 336*0Sstevel@tonic-gate 337*0Sstevel@tonic-gate if ((p[0] & 0x80) && (p[2] == SSL2_MT_SERVER_HELLO) && 338*0Sstevel@tonic-gate (p[5] == 0x00) && (p[6] == 0x02)) 339*0Sstevel@tonic-gate { 340*0Sstevel@tonic-gate #ifdef OPENSSL_NO_SSL2 341*0Sstevel@tonic-gate SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_PROTOCOL); 342*0Sstevel@tonic-gate goto err; 343*0Sstevel@tonic-gate #else 344*0Sstevel@tonic-gate /* we are talking sslv2 */ 345*0Sstevel@tonic-gate /* we need to clean up the SSLv3 setup and put in the 346*0Sstevel@tonic-gate * sslv2 stuff. */ 347*0Sstevel@tonic-gate int ch_len; 348*0Sstevel@tonic-gate 349*0Sstevel@tonic-gate if (s->options & SSL_OP_NO_SSLv2) 350*0Sstevel@tonic-gate { 351*0Sstevel@tonic-gate SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_PROTOCOL); 352*0Sstevel@tonic-gate goto err; 353*0Sstevel@tonic-gate } 354*0Sstevel@tonic-gate if (s->s2 == NULL) 355*0Sstevel@tonic-gate { 356*0Sstevel@tonic-gate if (!ssl2_new(s)) 357*0Sstevel@tonic-gate goto err; 358*0Sstevel@tonic-gate } 359*0Sstevel@tonic-gate else 360*0Sstevel@tonic-gate ssl2_clear(s); 361*0Sstevel@tonic-gate 362*0Sstevel@tonic-gate if (s->options & SSL_OP_NETSCAPE_CHALLENGE_BUG) 363*0Sstevel@tonic-gate ch_len=SSL2_CHALLENGE_LENGTH; 364*0Sstevel@tonic-gate else 365*0Sstevel@tonic-gate ch_len=SSL2_MAX_CHALLENGE_LENGTH; 366*0Sstevel@tonic-gate 367*0Sstevel@tonic-gate /* write out sslv2 challenge */ 368*0Sstevel@tonic-gate i=(SSL3_RANDOM_SIZE < ch_len) 369*0Sstevel@tonic-gate ?SSL3_RANDOM_SIZE:ch_len; 370*0Sstevel@tonic-gate s->s2->challenge_length=i; 371*0Sstevel@tonic-gate memcpy(s->s2->challenge, 372*0Sstevel@tonic-gate &(s->s3->client_random[SSL3_RANDOM_SIZE-i]),i); 373*0Sstevel@tonic-gate 374*0Sstevel@tonic-gate if (s->s3 != NULL) ssl3_free(s); 375*0Sstevel@tonic-gate 376*0Sstevel@tonic-gate if (!BUF_MEM_grow_clean(s->init_buf, 377*0Sstevel@tonic-gate SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)) 378*0Sstevel@tonic-gate { 379*0Sstevel@tonic-gate SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,ERR_R_BUF_LIB); 380*0Sstevel@tonic-gate goto err; 381*0Sstevel@tonic-gate } 382*0Sstevel@tonic-gate 383*0Sstevel@tonic-gate s->state=SSL2_ST_GET_SERVER_HELLO_A; 384*0Sstevel@tonic-gate if (!(s->client_version == SSL2_VERSION)) 385*0Sstevel@tonic-gate /* use special padding (SSL 3.0 draft/RFC 2246, App. E.2) */ 386*0Sstevel@tonic-gate s->s2->ssl2_rollback=1; 387*0Sstevel@tonic-gate 388*0Sstevel@tonic-gate /* setup the 5 bytes we have read so we get them from 389*0Sstevel@tonic-gate * the sslv2 buffer */ 390*0Sstevel@tonic-gate s->rstate=SSL_ST_READ_HEADER; 391*0Sstevel@tonic-gate s->packet_length=n; 392*0Sstevel@tonic-gate s->packet= &(s->s2->rbuf[0]); 393*0Sstevel@tonic-gate memcpy(s->packet,buf,n); 394*0Sstevel@tonic-gate s->s2->rbuf_left=n; 395*0Sstevel@tonic-gate s->s2->rbuf_offs=0; 396*0Sstevel@tonic-gate 397*0Sstevel@tonic-gate /* we have already written one */ 398*0Sstevel@tonic-gate s->s2->write_sequence=1; 399*0Sstevel@tonic-gate 400*0Sstevel@tonic-gate s->method=SSLv2_client_method(); 401*0Sstevel@tonic-gate s->handshake_func=s->method->ssl_connect; 402*0Sstevel@tonic-gate #endif 403*0Sstevel@tonic-gate } 404*0Sstevel@tonic-gate else if ((p[0] == SSL3_RT_HANDSHAKE) && 405*0Sstevel@tonic-gate (p[1] == SSL3_VERSION_MAJOR) && 406*0Sstevel@tonic-gate ((p[2] == SSL3_VERSION_MINOR) || 407*0Sstevel@tonic-gate (p[2] == TLS1_VERSION_MINOR)) && 408*0Sstevel@tonic-gate (p[5] == SSL3_MT_SERVER_HELLO)) 409*0Sstevel@tonic-gate { 410*0Sstevel@tonic-gate /* we have sslv3 or tls1 */ 411*0Sstevel@tonic-gate 412*0Sstevel@tonic-gate if (!ssl_init_wbio_buffer(s,1)) goto err; 413*0Sstevel@tonic-gate 414*0Sstevel@tonic-gate /* we are in this state */ 415*0Sstevel@tonic-gate s->state=SSL3_ST_CR_SRVR_HELLO_A; 416*0Sstevel@tonic-gate 417*0Sstevel@tonic-gate /* put the 5 bytes we have read into the input buffer 418*0Sstevel@tonic-gate * for SSLv3 */ 419*0Sstevel@tonic-gate s->rstate=SSL_ST_READ_HEADER; 420*0Sstevel@tonic-gate s->packet_length=n; 421*0Sstevel@tonic-gate s->packet= &(s->s3->rbuf.buf[0]); 422*0Sstevel@tonic-gate memcpy(s->packet,buf,n); 423*0Sstevel@tonic-gate s->s3->rbuf.left=n; 424*0Sstevel@tonic-gate s->s3->rbuf.offset=0; 425*0Sstevel@tonic-gate 426*0Sstevel@tonic-gate if ((p[2] == SSL3_VERSION_MINOR) && 427*0Sstevel@tonic-gate !(s->options & SSL_OP_NO_SSLv3)) 428*0Sstevel@tonic-gate { 429*0Sstevel@tonic-gate s->version=SSL3_VERSION; 430*0Sstevel@tonic-gate s->method=SSLv3_client_method(); 431*0Sstevel@tonic-gate } 432*0Sstevel@tonic-gate else if ((p[2] == TLS1_VERSION_MINOR) && 433*0Sstevel@tonic-gate !(s->options & SSL_OP_NO_TLSv1)) 434*0Sstevel@tonic-gate { 435*0Sstevel@tonic-gate s->version=TLS1_VERSION; 436*0Sstevel@tonic-gate s->method=TLSv1_client_method(); 437*0Sstevel@tonic-gate } 438*0Sstevel@tonic-gate else 439*0Sstevel@tonic-gate { 440*0Sstevel@tonic-gate SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_PROTOCOL); 441*0Sstevel@tonic-gate goto err; 442*0Sstevel@tonic-gate } 443*0Sstevel@tonic-gate 444*0Sstevel@tonic-gate s->handshake_func=s->method->ssl_connect; 445*0Sstevel@tonic-gate } 446*0Sstevel@tonic-gate else if ((p[0] == SSL3_RT_ALERT) && 447*0Sstevel@tonic-gate (p[1] == SSL3_VERSION_MAJOR) && 448*0Sstevel@tonic-gate ((p[2] == SSL3_VERSION_MINOR) || 449*0Sstevel@tonic-gate (p[2] == TLS1_VERSION_MINOR)) && 450*0Sstevel@tonic-gate (p[3] == 0) && 451*0Sstevel@tonic-gate (p[4] == 2)) 452*0Sstevel@tonic-gate { 453*0Sstevel@tonic-gate void (*cb)(const SSL *ssl,int type,int val)=NULL; 454*0Sstevel@tonic-gate int j; 455*0Sstevel@tonic-gate 456*0Sstevel@tonic-gate /* An alert */ 457*0Sstevel@tonic-gate if (s->info_callback != NULL) 458*0Sstevel@tonic-gate cb=s->info_callback; 459*0Sstevel@tonic-gate else if (s->ctx->info_callback != NULL) 460*0Sstevel@tonic-gate cb=s->ctx->info_callback; 461*0Sstevel@tonic-gate 462*0Sstevel@tonic-gate i=p[5]; 463*0Sstevel@tonic-gate if (cb != NULL) 464*0Sstevel@tonic-gate { 465*0Sstevel@tonic-gate j=(i<<8)|p[6]; 466*0Sstevel@tonic-gate cb(s,SSL_CB_READ_ALERT,j); 467*0Sstevel@tonic-gate } 468*0Sstevel@tonic-gate 469*0Sstevel@tonic-gate s->rwstate=SSL_NOTHING; 470*0Sstevel@tonic-gate SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_AD_REASON_OFFSET+p[6]); 471*0Sstevel@tonic-gate goto err; 472*0Sstevel@tonic-gate } 473*0Sstevel@tonic-gate else 474*0Sstevel@tonic-gate { 475*0Sstevel@tonic-gate SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNKNOWN_PROTOCOL); 476*0Sstevel@tonic-gate goto err; 477*0Sstevel@tonic-gate } 478*0Sstevel@tonic-gate s->init_num=0; 479*0Sstevel@tonic-gate 480*0Sstevel@tonic-gate /* Since, if we are sending a ssl23 client hello, we are not 481*0Sstevel@tonic-gate * reusing a session-id */ 482*0Sstevel@tonic-gate if (!ssl_get_new_session(s,0)) 483*0Sstevel@tonic-gate goto err; 484*0Sstevel@tonic-gate 485*0Sstevel@tonic-gate s->first_packet=1; 486*0Sstevel@tonic-gate return(SSL_connect(s)); 487*0Sstevel@tonic-gate err: 488*0Sstevel@tonic-gate return(-1); 489*0Sstevel@tonic-gate } 490*0Sstevel@tonic-gate 491