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-rw-r--r--ssl/s23_clnt.c444
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diff --git a/ssl/s23_clnt.c b/ssl/s23_clnt.c
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+/* ssl/s23_clnt.c */
+/* Copyright (C) 1995-1997 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.]
+ */
+
+#include <stdio.h>
+#include "buffer.h"
+#include "rand.h"
+#include "objects.h"
+#include "evp.h"
+#include "ssl_locl.h"
+
+#define BREAK break
+
+#ifndef NOPROTO
+static int ssl23_client_hello(SSL *s);
+static int ssl23_get_server_hello(SSL *s);
+#else
+static int ssl23_client_hello();
+static int ssl23_get_server_hello();
+#endif
+
+static SSL_METHOD *ssl23_get_client_method(ver)
+int ver;
+ {
+ if (ver == 2)
+ return(SSLv2_client_method());
+ else if (ver == 3)
+ return(SSLv3_client_method());
+ else
+ return(NULL);
+ }
+
+SSL_METHOD *SSLv23_client_method()
+ {
+ 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);
+ }
+
+int ssl23_connect(s)
+SSL *s;
+ {
+ BUF_MEM *buf;
+ unsigned long Time=time(NULL);
+ void (*cb)()=NULL;
+ int ret= -1;
+ int new_state,state;
+
+ RAND_seed((unsigned char *)&Time,sizeof(Time));
+ ERR_clear_error();
+ errno=0;
+
+ 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 (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
+
+ s->version=3;
+ 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->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);
+ }
+
+
+static int ssl23_client_hello(s)
+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);
+ }
+#endif
+
+ 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;
+ *(d++)=SSL3_VERSION_MAJOR;
+ *(d++)=SSL3_VERSION_MINOR;
+
+ /* 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;
+#endif
+ s2n(0,d);
+
+ if (s->ctx->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(s)
+SSL *s;
+ {
+ char buf[8];
+ unsigned char *p;
+ int i,ch_len;
+ int n;
+ BIO *bbio;
+
+ 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->s2 == NULL)
+ {
+ if (!ssl2_new(s))
+ goto err;
+ }
+ else
+ ssl2_clear(s);
+
+ if (s->ctx->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[5] == SSL3_MT_SERVER_HELLO))
+ {
+ /* we have sslv3 */
+
+ if (s->bbio == NULL)
+ {
+ bbio=BIO_new(BIO_f_buffer());
+ if (bbio == NULL)
+ {
+ SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,ERR_R_BUF_LIB);
+ goto err;
+ }
+ s->bbio=bbio;
+ }
+ else
+ bbio=s->bbio;
+
+ BIO_reset(bbio);
+ if (!BIO_set_write_buffer_size(bbio,16*1024))
+ {
+ SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,ERR_R_BUF_LIB);
+ goto err;
+ }
+
+ /* start the buffering */
+ s->wbio=BIO_push(s->bbio,s->wbio);
+
+ /* 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;
+
+ s->method=SSLv3_client_method();
+ 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[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_SSL3_READ_BYTES,1000+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);
+ }
+
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