X-Git-Url: https://git.openssl.org/?a=blobdiff_plain;f=ssl%2Fs3_both.c;h=03e0c38770b105bd3c20c8c58bf8db0620f483d6;hb=0e1c06128adbfd2d88dc304db2262140bad045fd;hp=6de62e15916611b3f7cc41fbcf983a44c22d6f12;hpb=78414a6a897db42c9bcf06aa21c705811ab33921;p=openssl.git diff --git a/ssl/s3_both.c b/ssl/s3_both.c index 6de62e1591..03e0c38770 100644 --- a/ssl/s3_both.c +++ b/ssl/s3_both.c @@ -55,26 +55,90 @@ * copied and put under another distribution licence * [including the GNU Public Licence.] */ +/* ==================================================================== + * Copyright (c) 1998-2000 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 #include -#include "buffer.h" -#include "rand.h" -#include "objects.h" -#include "evp.h" -#include "x509.h" +#include +#include +#include +#include +#include #include "ssl_locl.h" -#define BREAK break - -/* SSL3err(SSL_F_SSL3_GET_FINISHED,SSL_R_EXCESSIVE_MESSAGE_SIZE); - */ +/* send s->init_buf in records of type 'type' */ +int ssl3_do_write(SSL *s, int type) + { + int ret; + + ret=ssl3_write_bytes(s,type,&s->init_buf->data[s->init_off], + s->init_num); + if (ret < 0) return(-1); + if (type == SSL3_RT_HANDSHAKE) + /* should not be done for 'Hello Request's, but in that case + * we'll ignore the result anyway */ + ssl3_finish_mac(s,(unsigned char *)&s->init_buf->data[s->init_off],ret); + + if (ret == s->init_num) + return(1); + s->init_off+=ret; + s->init_num-=ret; + return(0); + } -int ssl3_send_finished(s,a,b,sender,slen) -SSL *s; -int a; -int b; -unsigned char *sender; -int slen; +int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen) { unsigned char *p,*d; int i; @@ -88,10 +152,19 @@ int slen; i=s->method->ssl3_enc->final_finish_mac(s, &(s->s3->finish_dgst1), &(s->s3->finish_dgst2), - sender,slen,p); + sender,slen,s->s3->tmp.finish_md); + s->s3->tmp.finish_md_len = i; + memcpy(p, s->s3->tmp.finish_md, i); p+=i; l=i; +#ifdef WIN16 + /* MSVC 1.5 does not clear the top bytes of the word unless + * I do this. + */ + l&=0xffff; +#endif + *(d++)=SSL3_MT_FINISHED; l2n3(l,d); s->init_num=(int)l+4; @@ -104,17 +177,14 @@ int slen; return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); } -int ssl3_get_finished(s,a,b) -SSL *s; -int a; -int b; +int ssl3_get_finished(SSL *s, int a, int b) { int al,i,ok; long n; unsigned char *p; /* the mac has already been generated when we received the - * change cipher spec message and is in s->s3->tmp.in_dgst[12] + * change cipher spec message and is in s->s3->tmp.peer_finish_md */ n=ssl3_get_message(s, @@ -126,7 +196,7 @@ int b; if (!ok) return((int)n); - /* If this occurs if we has missed a message */ + /* If this occurs, we have missed a message */ if (!s->s3->change_cipher_spec) { al=SSL_AD_UNEXPECTED_MESSAGE; @@ -135,9 +205,8 @@ int b; } s->s3->change_cipher_spec=0; - p=(unsigned char *)s->init_buf->data; - - i=s->method->ssl3_enc->finish_mac_length; + p = (unsigned char *)s->init_buf->data; + i = s->s3->tmp.peer_finish_md_len; if (i != n) { @@ -146,7 +215,7 @@ int b; goto f_err; } - if (memcmp( p, (char *)&(s->s3->tmp.finish_md[0]),i) != 0) + if (memcmp(p, s->s3->tmp.peer_finish_md, i) != 0) { al=SSL_AD_DECRYPT_ERROR; SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_DIGEST_CHECK_FAILED); @@ -167,9 +236,7 @@ f_err: * ssl->session->read_compression assign * ssl->session->read_hash assign */ -int ssl3_send_change_cipher_spec(s,a,b) -SSL *s; -int a,b; +int ssl3_send_change_cipher_spec(SSL *s, int a, int b) { unsigned char *p; @@ -187,9 +254,7 @@ int a,b; return(ssl3_do_write(s,SSL3_RT_CHANGE_CIPHER_SPEC)); } -unsigned long ssl3_output_cert_chain(s,x) -SSL *s; -X509 *x; +unsigned long ssl3_output_cert_chain(SSL *s, X509 *x) { unsigned char *p; int n,i; @@ -236,6 +301,23 @@ X509 *x; X509_STORE_CTX_cleanup(&xs_ctx); } + /* Thawte special :-) */ + if (s->ctx->extra_certs != NULL) + for (i=0; ictx->extra_certs); i++) + { + x=sk_X509_value(s->ctx->extra_certs,i); + n=i2d_X509(x,NULL); + if (!BUF_MEM_grow(buf,(int)(n+l+3))) + { + SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB); + return(0); + } + p=(unsigned char *)&(buf->data[l]); + l2n3(n,p); + i2d_X509(x,&p); + l+=n+3; + } + l-=7; p=(unsigned char *)&(buf->data[4]); l2n3(l,p); @@ -247,11 +329,12 @@ X509 *x; return(l); } -long ssl3_get_message(s,st1,stn,mt,max,ok) -SSL *s; -int st1,stn,mt; -long max; -int *ok; +/* Obtain handshake message of message type 'mt' (any if mt == -1), + * maximum acceptable body length 'max'. + * The first four bytes (msg_type and length) are read in state 'st1', + * the body is read in state 'stn'. + */ +long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok) { unsigned char *p; unsigned long l; @@ -273,16 +356,38 @@ int *ok; p=(unsigned char *)s->init_buf->data; - if (s->state == st1) + if (s->state == st1) /* s->init_num < 4 */ { - i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE, - (char *)&(p[s->init_num]), - 4-s->init_num); - if (i < (4-s->init_num)) + int skip_message; + + do { - *ok=0; - return(ssl3_part_read(s,i)); + while (s->init_num < 4) + { + i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num], + 4 - s->init_num); + if (i <= 0) + { + s->rwstate=SSL_READING; + *ok = 0; + return i; + } + s->init_num+=i; + } + + skip_message = 0; + if (!s->server) + if (p[0] == SSL3_MT_HELLO_REQUEST) + /* The server may always send 'Hello Request' messages -- + * we are doing a handshake anyway now, so ignore them + * if their format is correct. Does not count for + * 'Finished' MAC. */ + if (p[1] == 0 && p[2] == 0 &&p[3] == 0) + skip_message = 1; } + while (skip_message); + + /* s->init_num == 4 */ if ((mt >= 0) && (*p != mt)) { @@ -290,6 +395,20 @@ int *ok; SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_UNEXPECTED_MESSAGE); goto f_err; } + if ((mt < 0) && (*p == SSL3_MT_CLIENT_HELLO) && + (st1 == SSL3_ST_SR_CERT_A) && + (stn == SSL3_ST_SR_CERT_B)) + { + /* At this point we have got an MS SGC second client + * hello (maybe we should always allow the client to + * start a new handshake?). We need to restart the mac. + * Don't increment {num,total}_renegotiations because + * we have not completed the handshake. */ + ssl3_init_finished_mac(s); + } + + ssl3_finish_mac(s, (unsigned char *)s->init_buf->data, 4); + s->s3->tmp.message_type= *(p++); n2l3(p,l); @@ -313,18 +432,21 @@ int *ok; /* next state (stn) */ p=(unsigned char *)s->init_buf->data; n=s->s3->tmp.message_size; - if (n > 0) + while (n > 0) { - i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE, - (char *)&(p[s->init_num]),(int)n); - if (i != (int)n) + i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],n); + if (i <= 0) { - *ok=0; - return(ssl3_part_read(s,i)); + s->rwstate=SSL_READING; + *ok = 0; + return i; } + s->init_num += i; + n -= i; } + ssl3_finish_mac(s, (unsigned char *)s->init_buf->data, s->init_num); *ok=1; - return(n); + return s->init_num; f_err: ssl3_send_alert(s,SSL3_AL_FATAL,al); err: @@ -332,9 +454,7 @@ err: return(-1); } -int ssl_cert_type(x,pkey) -X509 *x; -EVP_PKEY *pkey; +int ssl_cert_type(X509 *x, EVP_PKEY *pkey) { EVP_PKEY *pk; int ret= -1,i,j; @@ -380,11 +500,11 @@ EVP_PKEY *pkey; ret= -1; err: + if(!pkey) EVP_PKEY_free(pk); return(ret); } -int ssl_verify_alarm_type(type) -long type; +int ssl_verify_alarm_type(long type) { int al; @@ -436,8 +556,7 @@ long type; return(al); } -int ssl3_setup_buffers(s) -SSL *s; +int ssl3_setup_buffers(SSL *s) { unsigned char *p; unsigned int extra; @@ -448,7 +567,7 @@ SSL *s; extra=SSL3_RT_MAX_EXTRA; else extra=0; - if ((p=(unsigned char *)Malloc(SSL3_RT_MAX_PACKET_SIZE+extra)) + if ((p=Malloc(SSL3_RT_MAX_PACKET_SIZE+extra)) == NULL) goto err; s->s3->rbuf.buf=p; @@ -456,7 +575,7 @@ SSL *s; if (s->s3->wbuf.buf == NULL) { - if ((p=(unsigned char *)Malloc(SSL3_RT_MAX_PACKET_SIZE)) + if ((p=Malloc(SSL3_RT_MAX_PACKET_SIZE)) == NULL) goto err; s->s3->wbuf.buf=p;