X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=ssl%2Fs3_both.c;h=2ecfbb77cb1704bda84a57110a3256af1f568daa;hp=c3d660ff33736d64082113a25f0a20f136f7d527;hb=c755c5fd8ba5771691451e9d1b163544fdadb7ec;hpb=f73e07cf420ddad22b6148d8cbe28daf84ccae2d diff --git a/ssl/s3_both.c b/ssl/s3_both.c index c3d660ff33..2ecfbb77cb 100644 --- a/ssl/s3_both.c +++ b/ssl/s3_both.c @@ -55,26 +55,100 @@ * copied and put under another distribution licence * [including the GNU Public Licence.] */ +/* ==================================================================== + * Copyright (c) 1998-2002 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). + * + */ +/* ==================================================================== + * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. + * ECC cipher suite support in OpenSSL originally developed by + * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. + */ +#include +#include #include -#include "buffer.h" -#include "rand.h" -#include "objects.h" -#include "evp.h" -#include "x509.h" #include "ssl_locl.h" +#include +#include +#include +#include +#include + +/* send s->init_buf in records of type 'type' (SSL3_RT_HANDSHAKE or SSL3_RT_CHANGE_CIPHER_SPEC) */ +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) + { + if (s->msg_callback) + s->msg_callback(1, s->version, type, s->init_buf->data, (size_t)(s->init_off + s->init_num), s, s->msg_callback_arg); + return(1); + } + s->init_off+=ret; + s->init_num-=ret; + return(0); + } -#define BREAK break - -/* SSL3err(SSL_F_SSL3_GET_FINISHED,SSL_R_EXCESSIVE_MESSAGE_SIZE); - */ - -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; @@ -88,11 +162,13 @@ 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 +#ifdef OPENSSL_SYS_WIN16 /* MSVC 1.5 does not clear the top bytes of the word unless * I do this. */ @@ -111,20 +187,17 @@ 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, + n=s->method->ssl_get_message(s, a, b, SSL3_MT_FINISHED, @@ -133,7 +206,7 @@ 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; @@ -142,9 +215,8 @@ 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_msg; + i = s->s3->tmp.peer_finish_md_len; if (i != n) { @@ -153,7 +225,7 @@ 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); @@ -174,9 +246,7 @@ 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; @@ -194,9 +264,7 @@ 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; @@ -205,21 +273,32 @@ X509 *x; X509_STORE_CTX xs_ctx; X509_OBJECT obj; + int no_chain; + + if ((s->mode & SSL_MODE_NO_AUTO_CHAIN) || s->ctx->extra_certs) + no_chain = 1; + else + no_chain = 0; + /* TLSv1 sends a chain with nothing in it, instead of an alert */ buf=s->init_buf; - if (!BUF_MEM_grow(buf,(int)(10))) + if (!BUF_MEM_grow_clean(buf,10)) { SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB); return(0); } if (x != NULL) { - X509_STORE_CTX_init(&xs_ctx,s->ctx->cert_store,NULL,NULL); + if(!no_chain && !X509_STORE_CTX_init(&xs_ctx,s->ctx->cert_store,NULL,NULL)) + { + SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_X509_LIB); + return(0); + } for (;;) { n=i2d_X509(x,NULL); - if (!BUF_MEM_grow(buf,(int)(n+l+3))) + if (!BUF_MEM_grow_clean(buf,(int)(n+l+3))) { SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB); return(0); @@ -228,6 +307,10 @@ X509 *x; l2n3(n,p); i2d_X509(x,&p); l+=n+3; + + if (no_chain) + break; + if (X509_NAME_cmp(X509_get_subject_name(x), X509_get_issuer_name(x)) == 0) break; @@ -239,8 +322,8 @@ X509 *x; * ref count */ X509_free(x); } - - X509_STORE_CTX_cleanup(&xs_ctx); + if (!no_chain) + X509_STORE_CTX_cleanup(&xs_ctx); } /* Thawte special :-) */ @@ -249,7 +332,7 @@ X509 *x; { x=sk_X509_value(s->ctx->extra_certs,i); n=i2d_X509(x,NULL); - if (!BUF_MEM_grow(buf,(int)(n+l+3))) + if (!BUF_MEM_grow_clean(buf,(int)(n+l+3))) { SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB); return(0); @@ -271,11 +354,12 @@ 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; @@ -292,21 +376,51 @@ int *ok; goto f_err; } *ok=1; - return((int)s->s3->tmp.message_size); + s->init_msg = s->init_buf->data + 4; + s->init_num = (int)s->s3->tmp.message_size; + return s->init_num; } 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=s->method->ssl_read_bytes(s,SSL3_RT_HANDSHAKE, + &p[s->init_num],4 - s->init_num, 0); + 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) + { + s->init_num = 0; + skip_message = 1; + + if (s->msg_callback) + s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, p, 4, s, s->msg_callback_arg); + } } + while (skip_message); + + /* s->init_num == 4 */ if ((mt >= 0) && (*p != mt)) { @@ -314,6 +428,18 @@ 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); + } + s->s3->tmp.message_type= *(p++); n2l3(p,l); @@ -323,7 +449,13 @@ int *ok; SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_EXCESSIVE_MESSAGE_SIZE); goto f_err; } - if (l && !BUF_MEM_grow(s->init_buf,(int)l)) + if (l > (INT_MAX-4)) /* BUF_MEM_grow takes an 'int' parameter */ + { + al=SSL_AD_ILLEGAL_PARAMETER; + SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_EXCESSIVE_MESSAGE_SIZE); + goto f_err; + } + if (l && !BUF_MEM_grow_clean(s->init_buf,(int)l+4)) { SSLerr(SSL_F_SSL3_GET_MESSAGE,ERR_R_BUF_LIB); goto err; @@ -331,24 +463,30 @@ int *ok; s->s3->tmp.message_size=l; s->state=stn; - s->init_num=0; + s->init_msg = s->init_buf->data + 4; + s->init_num = 0; } /* next state (stn) */ - p=(unsigned char *)s->init_buf->data; - n=s->s3->tmp.message_size; - if (n > 0) + p = s->init_msg; + n = s->s3->tmp.message_size - s->init_num; + while (n > 0) { - i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE, - (char *)&(p[s->init_num]),(int)n); - if (i != (int)n) + i=s->method->ssl_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],n,0); + 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 + 4); + if (s->msg_callback) + s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, s->init_buf->data, (size_t)s->init_num + 4, s, s->msg_callback_arg); *ok=1; - return(n); + return s->init_num; f_err: ssl3_send_alert(s,SSL3_AL_FATAL,al); err: @@ -356,12 +494,10 @@ 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; + int ret= -1,i; if (pkey == NULL) pk=X509_get_pubkey(x); @@ -373,43 +509,24 @@ EVP_PKEY *pkey; if (i == EVP_PKEY_RSA) { ret=SSL_PKEY_RSA_ENC; - if (x != NULL) - { - j=X509_get_ext_count(x); - /* check to see if this is a signing only certificate */ - /* EAY EAY EAY EAY */ - } } else if (i == EVP_PKEY_DSA) { ret=SSL_PKEY_DSA_SIGN; } - else if (i == EVP_PKEY_DH) +#ifndef OPENSSL_NO_EC + else if (i == EVP_PKEY_EC) { - /* if we just have a key, we needs to be guess */ - - if (x == NULL) - ret=SSL_PKEY_DH_DSA; - else - { - j=X509_get_signature_type(x); - if (j == EVP_PKEY_RSA) - ret=SSL_PKEY_DH_RSA; - else if (j== EVP_PKEY_DSA) - ret=SSL_PKEY_DH_DSA; - else ret= -1; - } + ret = SSL_PKEY_ECC; } - else - ret= -1; +#endif 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; @@ -417,6 +534,7 @@ long type; { case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: case X509_V_ERR_UNABLE_TO_GET_CRL: + case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER: al=SSL_AD_UNKNOWN_CA; break; case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE: @@ -428,6 +546,8 @@ long type; case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD: case X509_V_ERR_CERT_NOT_YET_VALID: case X509_V_ERR_CRL_NOT_YET_VALID: + case X509_V_ERR_CERT_UNTRUSTED: + case X509_V_ERR_CERT_REJECTED: al=SSL_AD_BAD_CERTIFICATE; break; case X509_V_ERR_CERT_SIGNATURE_FAILURE: @@ -449,11 +569,16 @@ long type; case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY: case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE: case X509_V_ERR_CERT_CHAIN_TOO_LONG: + case X509_V_ERR_PATH_LENGTH_EXCEEDED: + case X509_V_ERR_INVALID_CA: al=SSL_AD_UNKNOWN_CA; break; case X509_V_ERR_APPLICATION_VERIFICATION: al=SSL_AD_HANDSHAKE_FAILURE; break; + case X509_V_ERR_INVALID_PURPOSE: + al=SSL_AD_UNSUPPORTED_CERTIFICATE; + break; default: al=SSL_AD_CERTIFICATE_UNKNOWN; break; @@ -461,11 +586,11 @@ long type; return(al); } -int ssl3_setup_buffers(s) -SSL *s; +int ssl3_setup_buffers(SSL *s) { unsigned char *p; unsigned int extra; + size_t len; if (s->s3->rbuf.buf == NULL) { @@ -473,18 +598,21 @@ SSL *s; extra=SSL3_RT_MAX_EXTRA; else extra=0; - if ((p=(unsigned char *)Malloc(SSL3_RT_MAX_PACKET_SIZE+extra)) - == NULL) + len = SSL3_RT_MAX_PACKET_SIZE + extra; + if ((p=OPENSSL_malloc(len)) == NULL) goto err; - s->s3->rbuf.buf=p; + s->s3->rbuf.buf = p; + s->s3->rbuf.len = len; } if (s->s3->wbuf.buf == NULL) { - if ((p=(unsigned char *)Malloc(SSL3_RT_MAX_PACKET_SIZE)) - == NULL) + len = SSL3_RT_MAX_PACKET_SIZE; + len += SSL3_RT_HEADER_LENGTH + 256; /* extra space for empty fragment */ + if ((p=OPENSSL_malloc(len)) == NULL) goto err; - s->s3->wbuf.buf=p; + s->s3->wbuf.buf = p; + s->s3->wbuf.len = len; } s->packet= &(s->s3->rbuf.buf[0]); return(1);