diff options
Diffstat (limited to 'ssl/zz')
| -rw-r--r-- | ssl/zz | 402 |
1 files changed, 402 insertions, 0 deletions
diff --git a/ssl/zz b/ssl/zz new file mode 100644 index 0000000000..47c570ec80 --- /dev/null +++ b/ssl/zz @@ -0,0 +1,402 @@ +/* ssl/s23_srvr.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 +int ssl23_get_client_hello(SSL *s); +#else +int ssl23_get_client_hello(); +#endif + +static SSL_METHOD *ssl23_get_server_method(ver) +int ver; + { + if (ver == 2) + return(SSLv2_server_method()); + else if (ver == 3) + return(SSLv3_server_method()); + else + return(NULL); + } + +SSL_METHOD *SSLv23_server_method() + { + static int init=1; + static SSL_METHOD SSLv23_server_data; + + if (init) + { + init=0; + memcpy((char *)&SSLv23_server_data, + (char *)sslv23_base_method(),sizeof(SSL_METHOD)); + SSLv23_server_data.ssl_accept=ssl23_accept; + SSLv23_server_data.get_ssl_method=ssl23_get_server_method; + } + return(&SSLv23_server_data); + } + +int ssl23_accept(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_ACCEPT: + case SSL_ST_BEFORE|SSL_ST_ACCEPT: + case SSL_ST_OK|SSL_ST_ACCEPT: + + if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1); + + s->version=3; + s->type=SSL_ST_ACCEPT; + + 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; + } + + ssl3_init_finished_mac(s); + + s->state=SSL23_ST_SR_CLNT_HELLO_A; + s->ctx->sess_accept++; + s->init_num=0; + break; + + case SSL23_ST_SR_CLNT_HELLO_A: + case SSL23_ST_SR_CLNT_HELLO_B: + + s->shutdown=0; + ret=ssl23_get_client_hello(s); + if (ret >= 0) cb=NULL; + goto end; + break; + + default: + SSLerr(SSL_F_SSL23_ACCEPT,SSL_R_UNKNOWN_STATE); + ret= -1; + goto end; + /* break; */ + } + + if ((cb != NULL) && (s->state != state)) + { + new_state=s->state; + s->state=state; + cb(s,SSL_CB_ACCEPT_LOOP,1); + s->state=new_state; + } + } +end: + if (cb != NULL) + cb(s,SSL_CB_ACCEPT_EXIT,ret); + s->in_handshake--; + return(ret); + } + + +int ssl23_get_client_hello(s) +SSL *s; + { + char buf[8]; + unsigned char *p,*d,*dd; + unsigned int i; + unsigned int csl,sil,cl; + int n=0,j; + BIO *bbio; + int type=0; + + /* read the initial header */ + if (s->state == SSL23_ST_SR_CLNT_HELLO_A) + { + if (!ssl3_setup_buffers(s)) goto err; + + 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_CLIENT_HELLO)) + { + /* SSLv2 header */ + if ((p[3] == 0x00) && (p[4] == 0x02)) + { + /* SSLv2 */ + type=1; + } + else if ((p[3] == SSL3_VERSION_MAJOR) && + (p[4] == SSL3_VERSION_MINOR)) + { + /* SSLv3 */ + s->state=SSL23_ST_SR_CLNT_HELLO_B; + } + } + else if ((p[0] == SSL3_RT_HANDSHAKE) && + (p[1] == SSL3_VERSION_MAJOR) && + (p[2] == SSL3_VERSION_MINOR) && + (p[5] == SSL3_MT_CLIENT_HELLO)) + { + /* true SSLv3 */ + type=3; + } + } + + if (s->state == SSL23_ST_SR_CLNT_HELLO_B) + { + /* we have a SSLv3 in a SSLv2 header */ + type=2; + p=s->packet; + n=((p[0]&0x7f)<<8)|p[1]; + if (n > (1024*4)) + { + SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_TOO_LARGE); + goto err; + } + + j=ssl23_read_bytes(s,n+2); + if (j <= 0) return(j); + + ssl3_finish_mac(s,&(s->packet[2]),s->packet_length-2); + + p=s->packet; + p+=5; + n2s(p,csl); + n2s(p,sil); + n2s(p,cl); + d=(unsigned char *)s->init_buf->data; + if ((csl+sil+cl+11) != s->packet_length) + { + SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_LENGTH_MISMATCH); + goto err; + } + + *(d++)=SSL3_VERSION_MAJOR; + *(d++)=SSL3_VERSION_MINOR; + + /* lets populate the random area */ + /* get the chalenge_length */ + i=(cl > SSL3_RANDOM_SIZE)?SSL3_RANDOM_SIZE:cl; + memset(d,0,SSL3_RANDOM_SIZE); + memcpy(&(d[SSL3_RANDOM_SIZE-i]),&(p[csl+sil]),i); + d+=SSL3_RANDOM_SIZE; + + /* no session-id reuse */ + *(d++)=0; + + /* ciphers */ + j=0; + dd=d; + d+=2; + for (i=0; i<csl; i+=3) + { + if (p[i] != 0) continue; + *(d++)=p[i+1]; + *(d++)=p[i+2]; + j+=2; + } + s2n(j,dd); + + /* compression */ + *(d++)=1; + *(d++)=0; + + i=(d-(unsigned char *)s->init_buf->data); + + /* get the data reused from the init_buf */ + s->s3->tmp.reuse_message=1; + s->s3->tmp.message_type=SSL3_MT_CLIENT_HELLO; + s->s3->tmp.message_size=i; + } + + if (type == 1) + { + /* 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->s3 != NULL) ssl3_free(s); + + if (!BUF_MEM_grow(s->init_buf, + SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)) + { + goto err; + } + + s->state=SSL2_ST_GET_CLIENT_HELLO_A; + if (s->ctx->options & SSL_OP_MSIE_SSLV2_RSA_PADDING) + s->s2->ssl2_rollback=0; + else + 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; + + s->method=SSLv2_server_method(); + s->handshake_func=s->method->ssl_accept; + } + + if ((type == 2) || (type == 3)) + { + /* we have sslv3 */ + + if (s->bbio == NULL) + { + bbio=BIO_new(BIO_f_buffer()); + if (bbio == NULL) + goto err; + s->bbio=bbio; + } + else + bbio=s->bbio; + BIO_reset(bbio); + if (!BIO_set_write_buffer_size(bbio,16*1024)) + goto err; + s->wbio=BIO_push(bbio,s->wbio); + + /* we are in this state */ + s->state=SSL3_ST_SR_CLNT_HELLO_A; + + if (type == 3) + { + /* put the 'n' 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; + } + else + { + s->packet_length=0; + s->s3->rbuf.left=0; + s->s3->rbuf.offset=0; + } + + s->method=SSLv3_server_method(); + s->handshake_func=s->method->ssl_accept; + } + + if ((type < 1) || (type > 3)) + { + /* bad, very bad */ + SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNKNOWN_PROTOCOL); + goto err; + } + s->init_num=0; + return(SSL_accept(s)); +err: + return(-1); + } + |