diff options
Diffstat (limited to 'crypto/openssl/ssl/s3_clnt.c')
| -rw-r--r-- | crypto/openssl/ssl/s3_clnt.c | 1729 |
1 files changed, 1729 insertions, 0 deletions
diff --git a/crypto/openssl/ssl/s3_clnt.c b/crypto/openssl/ssl/s3_clnt.c new file mode 100644 index 0000000..d3e6b4d --- /dev/null +++ b/crypto/openssl/ssl/s3_clnt.c @@ -0,0 +1,1729 @@ +/* ssl/s3_clnt.c */ +/* Copyright (C) 1995-1998 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 <openssl/buffer.h> +#include <openssl/rand.h> +#include <openssl/objects.h> +#include <openssl/md5.h> +#include <openssl/sha.h> +#include <openssl/evp.h> +#include "ssl_locl.h" + +static SSL_METHOD *ssl3_get_client_method(int ver); +static int ssl3_client_hello(SSL *s); +static int ssl3_get_server_hello(SSL *s); +static int ssl3_get_certificate_request(SSL *s); +static int ca_dn_cmp(X509_NAME **a,X509_NAME **b); +static int ssl3_get_server_done(SSL *s); +static int ssl3_send_client_verify(SSL *s); +static int ssl3_send_client_certificate(SSL *s); +static int ssl3_send_client_key_exchange(SSL *s); +static int ssl3_get_key_exchange(SSL *s); +static int ssl3_get_server_certificate(SSL *s); +static int ssl3_check_cert_and_algorithm(SSL *s); +static SSL_METHOD *ssl3_get_client_method(int ver) + { + if (ver == SSL3_VERSION) + return(SSLv3_client_method()); + else + return(NULL); + } + +SSL_METHOD *SSLv3_client_method(void) + { + static int init=1; + static SSL_METHOD SSLv3_client_data; + + if (init) + { + init=0; + memcpy((char *)&SSLv3_client_data,(char *)sslv3_base_method(), + sizeof(SSL_METHOD)); + SSLv3_client_data.ssl_connect=ssl3_connect; + SSLv3_client_data.get_ssl_method=ssl3_get_client_method; + } + return(&SSLv3_client_data); + } + +int ssl3_connect(SSL *s) + { + BUF_MEM *buf; + unsigned long Time=time(NULL),l; + long num1; + void (*cb)()=NULL; + int ret= -1; + int new_state,state,skip=0;; + + RAND_seed(&Time,sizeof(Time)); + ERR_clear_error(); + clear_sys_error(); + + 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_RENEGOTIATE: + s->new_session=1; + s->state=SSL_ST_CONNECT; + s->ctx->stats.sess_connect_renegotiate++; + /* break */ + case SSL_ST_BEFORE: + case SSL_ST_CONNECT: + case SSL_ST_BEFORE|SSL_ST_CONNECT: + case SSL_ST_OK|SSL_ST_CONNECT: + + s->server=0; + if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1); + + if ((s->version & 0xff00 ) != 0x0300) + abort(); + /* s->version=SSL3_VERSION; */ + 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; } + + /* setup buffing BIO */ + if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; } + + /* don't push the buffering BIO quite yet */ + + ssl3_init_finished_mac(s); + + s->state=SSL3_ST_CW_CLNT_HELLO_A; + s->ctx->stats.sess_connect++; + s->init_num=0; + break; + + case SSL3_ST_CW_CLNT_HELLO_A: + case SSL3_ST_CW_CLNT_HELLO_B: + + s->shutdown=0; + ret=ssl3_client_hello(s); + if (ret <= 0) goto end; + s->state=SSL3_ST_CR_SRVR_HELLO_A; + s->init_num=0; + + /* turn on buffering for the next lot of output */ + if (s->bbio != s->wbio) + s->wbio=BIO_push(s->bbio,s->wbio); + + break; + + case SSL3_ST_CR_SRVR_HELLO_A: + case SSL3_ST_CR_SRVR_HELLO_B: + ret=ssl3_get_server_hello(s); + if (ret <= 0) goto end; + if (s->hit) + s->state=SSL3_ST_CR_FINISHED_A; + else + s->state=SSL3_ST_CR_CERT_A; + s->init_num=0; + break; + + case SSL3_ST_CR_CERT_A: + case SSL3_ST_CR_CERT_B: + /* Check if it is anon DH */ + if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL)) + { + ret=ssl3_get_server_certificate(s); + if (ret <= 0) goto end; + } + else + skip=1; + s->state=SSL3_ST_CR_KEY_EXCH_A; + s->init_num=0; + break; + + case SSL3_ST_CR_KEY_EXCH_A: + case SSL3_ST_CR_KEY_EXCH_B: + ret=ssl3_get_key_exchange(s); + if (ret <= 0) goto end; + s->state=SSL3_ST_CR_CERT_REQ_A; + s->init_num=0; + + /* at this point we check that we have the + * required stuff from the server */ + if (!ssl3_check_cert_and_algorithm(s)) + { + ret= -1; + goto end; + } + break; + + case SSL3_ST_CR_CERT_REQ_A: + case SSL3_ST_CR_CERT_REQ_B: + ret=ssl3_get_certificate_request(s); + if (ret <= 0) goto end; + s->state=SSL3_ST_CR_SRVR_DONE_A; + s->init_num=0; + break; + + case SSL3_ST_CR_SRVR_DONE_A: + case SSL3_ST_CR_SRVR_DONE_B: + ret=ssl3_get_server_done(s); + if (ret <= 0) goto end; + if (s->s3->tmp.cert_req) + s->state=SSL3_ST_CW_CERT_A; + else + s->state=SSL3_ST_CW_KEY_EXCH_A; + s->init_num=0; + + break; + + case SSL3_ST_CW_CERT_A: + case SSL3_ST_CW_CERT_B: + case SSL3_ST_CW_CERT_C: + case SSL3_ST_CW_CERT_D: + ret=ssl3_send_client_certificate(s); + if (ret <= 0) goto end; + s->state=SSL3_ST_CW_KEY_EXCH_A; + s->init_num=0; + break; + + case SSL3_ST_CW_KEY_EXCH_A: + case SSL3_ST_CW_KEY_EXCH_B: + ret=ssl3_send_client_key_exchange(s); + if (ret <= 0) goto end; + l=s->s3->tmp.new_cipher->algorithms; + /* EAY EAY EAY need to check for DH fix cert + * sent back */ + /* For TLS, cert_req is set to 2, so a cert chain + * of nothing is sent, but no verify packet is sent */ + if (s->s3->tmp.cert_req == 1) + { + s->state=SSL3_ST_CW_CERT_VRFY_A; + } + else + { + s->state=SSL3_ST_CW_CHANGE_A; + s->s3->change_cipher_spec=0; + } + + s->init_num=0; + break; + + case SSL3_ST_CW_CERT_VRFY_A: + case SSL3_ST_CW_CERT_VRFY_B: + ret=ssl3_send_client_verify(s); + if (ret <= 0) goto end; + s->state=SSL3_ST_CW_CHANGE_A; + s->init_num=0; + s->s3->change_cipher_spec=0; + break; + + case SSL3_ST_CW_CHANGE_A: + case SSL3_ST_CW_CHANGE_B: + ret=ssl3_send_change_cipher_spec(s, + SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B); + if (ret <= 0) goto end; + s->state=SSL3_ST_CW_FINISHED_A; + s->init_num=0; + + s->session->cipher=s->s3->tmp.new_cipher; + if (s->s3->tmp.new_compression == NULL) + s->session->compress_meth=0; + else + s->session->compress_meth= + s->s3->tmp.new_compression->id; + if (!s->method->ssl3_enc->setup_key_block(s)) + { + ret= -1; + goto end; + } + + if (!s->method->ssl3_enc->change_cipher_state(s, + SSL3_CHANGE_CIPHER_CLIENT_WRITE)) + { + ret= -1; + goto end; + } + + break; + + case SSL3_ST_CW_FINISHED_A: + case SSL3_ST_CW_FINISHED_B: + ret=ssl3_send_finished(s, + SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B, + s->method->ssl3_enc->client_finished, + s->method->ssl3_enc->client_finished_len); + if (ret <= 0) goto end; + s->state=SSL3_ST_CW_FLUSH; + + /* clear flags */ + s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER; + if (s->hit) + { + s->s3->tmp.next_state=SSL_ST_OK; + if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED) + { + s->state=SSL_ST_OK; + s->s3->flags|=SSL3_FLAGS_POP_BUFFER; + s->s3->delay_buf_pop_ret=0; + } + } + else + { + s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A; + } + s->init_num=0; + break; + + case SSL3_ST_CR_FINISHED_A: + case SSL3_ST_CR_FINISHED_B: + + ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A, + SSL3_ST_CR_FINISHED_B); + if (ret <= 0) goto end; + + if (s->hit) + s->state=SSL3_ST_CW_CHANGE_A; + else + s->state=SSL_ST_OK; + s->init_num=0; + break; + + case SSL3_ST_CW_FLUSH: + /* number of bytes to be flushed */ + num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL); + if (num1 > 0) + { + s->rwstate=SSL_WRITING; + num1=BIO_flush(s->wbio); + if (num1 <= 0) { ret= -1; goto end; } + s->rwstate=SSL_NOTHING; + } + + s->state=s->s3->tmp.next_state; + break; + + case SSL_ST_OK: + /* clean a few things up */ + ssl3_cleanup_key_block(s); + + if (s->init_buf != NULL) + { + BUF_MEM_free(s->init_buf); + s->init_buf=NULL; + } + + /* If we are not 'joining' the last two packets, + * remove the buffering now */ + if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER)) + ssl_free_wbio_buffer(s); + /* else do it later in ssl3_write */ + + s->init_num=0; + s->new_session=0; + + ssl_update_cache(s,SSL_SESS_CACHE_CLIENT); + if (s->hit) s->ctx->stats.sess_hit++; + + ret=1; + /* s->server=0; */ + s->handshake_func=ssl3_connect; + s->ctx->stats.sess_connect_good++; + + if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1); + + goto end; + /* break; */ + + default: + SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE); + ret= -1; + goto end; + /* break; */ + } + + /* did we do anything */ + if (!s->s3->tmp.reuse_message && !skip) + { + if (s->debug) + { + if ((ret=BIO_flush(s->wbio)) <= 0) + goto end; + } + + if ((cb != NULL) && (s->state != state)) + { + new_state=s->state; + s->state=state; + cb(s,SSL_CB_CONNECT_LOOP,1); + s->state=new_state; + } + } + skip=0; + } +end: + if (cb != NULL) + cb(s,SSL_CB_CONNECT_EXIT,ret); + s->in_handshake--; + return(ret); + } + + +static int ssl3_client_hello(SSL *s) + { + unsigned char *buf; + unsigned char *p,*d; + int i,j; + unsigned long Time,l; + SSL_COMP *comp; + + buf=(unsigned char *)s->init_buf->data; + if (s->state == SSL3_ST_CW_CLNT_HELLO_A) + { + if ((s->session == NULL) || + (s->session->ssl_version != s->version) || + (s->session->not_resumable)) + { + if (!ssl_get_new_session(s,0)) + goto err; + } + /* else use the pre-loaded session */ + + p=s->s3->client_random; + Time=time(NULL); /* Time */ + l2n(Time,p); + RAND_bytes(p,SSL3_RANDOM_SIZE-sizeof(Time)); + + /* Do the message type and length last */ + d=p= &(buf[4]); + + *(p++)=s->version>>8; + *(p++)=s->version&0xff; + s->client_version=s->version; + + /* Random stuff */ + memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE); + p+=SSL3_RANDOM_SIZE; + + /* Session ID */ + if (s->new_session) + i=0; + else + i=s->session->session_id_length; + *(p++)=i; + if (i != 0) + { + memcpy(p,s->session->session_id,i); + p+=i; + } + + /* Ciphers supported */ + i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2])); + if (i == 0) + { + SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE); + goto err; + } + s2n(i,p); + p+=i; + + /* COMPRESSION */ + if (s->ctx->comp_methods == NULL) + j=0; + else + j=sk_SSL_COMP_num(s->ctx->comp_methods); + *(p++)=1+j; + for (i=0; i<j; i++) + { + comp=sk_SSL_COMP_value(s->ctx->comp_methods,i); + *(p++)=comp->id; + } + *(p++)=0; /* Add the NULL method */ + + l=(p-d); + d=buf; + *(d++)=SSL3_MT_CLIENT_HELLO; + l2n3(l,d); + + s->state=SSL3_ST_CW_CLNT_HELLO_B; + /* number of bytes to write */ + s->init_num=p-buf; + s->init_off=0; + } + + /* SSL3_ST_CW_CLNT_HELLO_B */ + return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); +err: + return(-1); + } + +static int ssl3_get_server_hello(SSL *s) + { + STACK_OF(SSL_CIPHER) *sk; + SSL_CIPHER *c; + unsigned char *p,*d; + int i,al,ok; + unsigned int j; + long n; + SSL_COMP *comp; + + n=ssl3_get_message(s, + SSL3_ST_CR_SRVR_HELLO_A, + SSL3_ST_CR_SRVR_HELLO_B, + SSL3_MT_SERVER_HELLO, + 300, /* ?? */ + &ok); + + if (!ok) return((int)n); + d=p=(unsigned char *)s->init_buf->data; + + if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff))) + { + SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION); + s->version=(s->version&0xff00)|p[1]; + al=SSL_AD_PROTOCOL_VERSION; + goto f_err; + } + p+=2; + + /* load the server hello data */ + /* load the server random */ + memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE); + p+=SSL3_RANDOM_SIZE; + + /* get the session-id */ + j= *(p++); + + if ((j != 0) && (j != SSL3_SESSION_ID_SIZE)) + { + /* SSLref returns 16 :-( */ + if (j < SSL2_SSL_SESSION_ID_LENGTH) + { + al=SSL_AD_ILLEGAL_PARAMETER; + SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_SHORT); + goto f_err; + } + } + if (j != 0 && j == s->session->session_id_length + && memcmp(p,s->session->session_id,j) == 0) + { + if(s->sid_ctx_length != s->session->sid_ctx_length + || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length)) + { + al=SSL_AD_ILLEGAL_PARAMETER; + SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT); + goto f_err; + } + s->hit=1; + } + else /* a miss or crap from the other end */ + { + /* If we were trying for session-id reuse, make a new + * SSL_SESSION so we don't stuff up other people */ + s->hit=0; + if (s->session->session_id_length > 0) + { + if (!ssl_get_new_session(s,0)) + { + al=SSL_AD_INTERNAL_ERROR; + goto f_err; + } + } + s->session->session_id_length=j; + memcpy(s->session->session_id,p,j); /* j could be 0 */ + } + p+=j; + c=ssl_get_cipher_by_char(s,p); + if (c == NULL) + { + /* unknown cipher */ + al=SSL_AD_ILLEGAL_PARAMETER; + SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED); + goto f_err; + } + p+=ssl_put_cipher_by_char(s,NULL,NULL); + + sk=ssl_get_ciphers_by_id(s); + i=sk_SSL_CIPHER_find(sk,c); + if (i < 0) + { + /* we did not say we would use this cipher */ + al=SSL_AD_ILLEGAL_PARAMETER; + SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED); + goto f_err; + } + + if (s->hit && (s->session->cipher != c)) + { + if (!(s->options & + SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG)) + { + al=SSL_AD_ILLEGAL_PARAMETER; + SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED); + goto f_err; + } + } + s->s3->tmp.new_cipher=c; + + /* lets get the compression algorithm */ + /* COMPRESSION */ + j= *(p++); + if (j == 0) + comp=NULL; + else + comp=ssl3_comp_find(s->ctx->comp_methods,j); + + if ((j != 0) && (comp == NULL)) + { + al=SSL_AD_ILLEGAL_PARAMETER; + SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM); + goto f_err; + } + else + { + s->s3->tmp.new_compression=comp; + } + + if (p != (d+n)) + { + /* wrong packet length */ + al=SSL_AD_DECODE_ERROR; + SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH); + goto err; + } + + return(1); +f_err: + ssl3_send_alert(s,SSL3_AL_FATAL,al); +err: + return(-1); + } + +static int ssl3_get_server_certificate(SSL *s) + { + int al,i,ok,ret= -1; + unsigned long n,nc,llen,l; + X509 *x=NULL; + unsigned char *p,*d,*q; + STACK_OF(X509) *sk=NULL; + SESS_CERT *sc; + EVP_PKEY *pkey=NULL; + + n=ssl3_get_message(s, + SSL3_ST_CR_CERT_A, + SSL3_ST_CR_CERT_B, + -1, +#if defined(MSDOS) && !defined(WIN32) + 1024*30, /* 30k max cert list :-) */ +#else + 1024*100, /* 100k max cert list :-) */ +#endif + &ok); + + if (!ok) return((int)n); + + if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) + { + s->s3->tmp.reuse_message=1; + return(1); + } + + if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE) + { + al=SSL_AD_UNEXPECTED_MESSAGE; + SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE); + goto f_err; + } + d=p=(unsigned char *)s->init_buf->data; + + if ((sk=sk_X509_new_null()) == NULL) + { + SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE); + goto err; + } + + n2l3(p,llen); + if (llen+3 != n) + { + al=SSL_AD_DECODE_ERROR; + SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH); + goto f_err; + } + for (nc=0; nc<llen; ) + { + n2l3(p,l); + if ((l+nc+3) > llen) + { + al=SSL_AD_DECODE_ERROR; + SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH); + goto f_err; + } + + q=p; + x=d2i_X509(NULL,&q,l); + if (x == NULL) + { + al=SSL_AD_BAD_CERTIFICATE; + SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB); + goto f_err; + } + if (q != (p+l)) + { + al=SSL_AD_DECODE_ERROR; + SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH); + goto f_err; + } + if (!sk_X509_push(sk,x)) + { + SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE); + goto err; + } + x=NULL; + nc+=l+3; + p=q; + } + + i=ssl_verify_cert_chain(s,sk); + if ((s->verify_mode != SSL_VERIFY_NONE) && (!i)) + { + al=ssl_verify_alarm_type(s->verify_result); + SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED); + goto f_err; + } + + sc=ssl_sess_cert_new(); + if (sc == NULL) goto err; + + if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert); + s->session->sess_cert=sc; + + sc->cert_chain=sk; + x=sk_X509_value(sk,0); + sk=NULL; + + pkey=X509_get_pubkey(x); + + if ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)) + { + x=NULL; + al=SSL3_AL_FATAL; + SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS); + goto f_err; + } + + i=ssl_cert_type(x,pkey); + if (i < 0) + { + x=NULL; + al=SSL3_AL_FATAL; + SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_UNKNOWN_CERTIFICATE_TYPE); + goto f_err; + } + + sc->peer_cert_type=i; + CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509); + if (sc->peer_pkeys[i].x509 != NULL) /* Why would this ever happen? + * We just created sc a couple of + * lines ago. */ + X509_free(sc->peer_pkeys[i].x509); + sc->peer_pkeys[i].x509=x; + sc->peer_key= &(sc->peer_pkeys[i]); + + if (s->session->peer != NULL) + X509_free(s->session->peer); + CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509); + s->session->peer=x; + + x=NULL; + ret=1; + + if (0) + { +f_err: + ssl3_send_alert(s,SSL3_AL_FATAL,al); + } +err: + EVP_PKEY_free(pkey); + X509_free(x); + sk_X509_pop_free(sk,X509_free); + return(ret); + } + +static int ssl3_get_key_exchange(SSL *s) + { +#ifndef NO_RSA + unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2]; +#endif + EVP_MD_CTX md_ctx; + unsigned char *param,*p; + int al,i,j,param_len,ok; + long n,alg; + EVP_PKEY *pkey=NULL; +#ifndef NO_RSA + RSA *rsa=NULL; +#endif +#ifndef NO_DH + DH *dh=NULL; +#endif + + n=ssl3_get_message(s, + SSL3_ST_CR_KEY_EXCH_A, + SSL3_ST_CR_KEY_EXCH_B, + -1, + 1024*8, /* ?? */ + &ok); + + if (!ok) return((int)n); + + if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE) + { + s->s3->tmp.reuse_message=1; + return(1); + } + + param=p=(unsigned char *)s->init_buf->data; + + if (s->session->sess_cert != NULL) + { +#ifndef NO_RSA + if (s->session->sess_cert->peer_rsa_tmp != NULL) + { + RSA_free(s->session->sess_cert->peer_rsa_tmp); + s->session->sess_cert->peer_rsa_tmp=NULL; + } +#endif +#ifndef NO_DH + if (s->session->sess_cert->peer_dh_tmp) + { + DH_free(s->session->sess_cert->peer_dh_tmp); + s->session->sess_cert->peer_dh_tmp=NULL; + } +#endif + } + else + { + s->session->sess_cert=ssl_sess_cert_new(); + } + + param_len=0; + alg=s->s3->tmp.new_cipher->algorithms; + +#ifndef NO_RSA + if (alg & SSL_kRSA) + { + if ((rsa=RSA_new()) == NULL) + { + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); + goto err; + } + n2s(p,i); + param_len=i+2; + if (param_len > n) + { + al=SSL_AD_DECODE_ERROR; + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH); + goto f_err; + } + if (!(rsa->n=BN_bin2bn(p,i,rsa->n))) + { + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); + goto err; + } + p+=i; + + n2s(p,i); + param_len+=i+2; + if (param_len > n) + { + al=SSL_AD_DECODE_ERROR; + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH); + goto f_err; + } + if (!(rsa->e=BN_bin2bn(p,i,rsa->e))) + { + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); + goto err; + } + p+=i; + n-=param_len; + + /* this should be because we are using an export cipher */ + if (alg & SSL_aRSA) + pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); + else + { + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_INTERNAL_ERROR); + goto err; + } + s->session->sess_cert->peer_rsa_tmp=rsa; + rsa=NULL; + } + else +#endif +#ifndef NO_DH + if (alg & SSL_kEDH) + { + if ((dh=DH_new()) == NULL) + { + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB); + goto err; + } + n2s(p,i); + param_len=i+2; + if (param_len > n) + { + al=SSL_AD_DECODE_ERROR; + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH); + goto f_err; + } + if (!(dh->p=BN_bin2bn(p,i,NULL))) + { + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); + goto err; + } + p+=i; + + n2s(p,i); + param_len+=i+2; + if (param_len > n) + { + al=SSL_AD_DECODE_ERROR; + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH); + goto f_err; + } + if (!(dh->g=BN_bin2bn(p,i,NULL))) + { + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); + goto err; + } + p+=i; + + n2s(p,i); + param_len+=i+2; + if (param_len > n) + { + al=SSL_AD_DECODE_ERROR; + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH); + goto f_err; + } + if (!(dh->pub_key=BN_bin2bn(p,i,NULL))) + { + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); + goto err; + } + p+=i; + n-=param_len; + +#ifndef NO_RSA + if (alg & SSL_aRSA) + pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); + else +#endif +#ifndef NO_DSA + if (alg & SSL_aDSS) + pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509); +#endif + /* else anonymous DH, so no certificate or pkey. */ + + s->session->sess_cert->peer_dh_tmp=dh; + dh=NULL; + } + else if ((alg & SSL_kDHr) || (alg & SSL_kDHd)) + { + al=SSL_AD_ILLEGAL_PARAMETER; + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER); + goto f_err; + } +#endif + if (alg & SSL_aFZA) + { + al=SSL_AD_HANDSHAKE_FAILURE; + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER); + goto f_err; + } + + + /* p points to the next byte, there are 'n' bytes left */ + + + /* if it was signed, check the signature */ + if (pkey != NULL) + { + n2s(p,i); + n-=2; + j=EVP_PKEY_size(pkey); + + if ((i != n) || (n > j) || (n <= 0)) + { + /* wrong packet length */ + al=SSL_AD_DECODE_ERROR; + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH); + goto f_err; + } + +#ifndef NO_RSA + if (pkey->type == EVP_PKEY_RSA) + { + int num; + + j=0; + q=md_buf; + for (num=2; num > 0; num--) + { + EVP_DigestInit(&md_ctx,(num == 2) + ?s->ctx->md5:s->ctx->sha1); + EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); + EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); + EVP_DigestUpdate(&md_ctx,param,param_len); + EVP_DigestFinal(&md_ctx,q,(unsigned int *)&i); + q+=i; + j+=i; + } + i=RSA_public_decrypt((int)n,p,p,pkey->pkey.rsa, + RSA_PKCS1_PADDING); + if (i <= 0) + { + al=SSL_AD_DECRYPT_ERROR; + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT); + goto f_err; + } + if ((j != i) || (memcmp(p,md_buf,i) != 0)) + { + /* bad signature */ + al=SSL_AD_DECRYPT_ERROR; + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); + goto f_err; + } + } + else +#endif +#ifndef NO_DSA + if (pkey->type == EVP_PKEY_DSA) + { + /* lets do DSS */ + EVP_VerifyInit(&md_ctx,EVP_dss1()); + EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); + EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); + EVP_VerifyUpdate(&md_ctx,param,param_len); + if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey)) + { + /* bad signature */ + al=SSL_AD_DECRYPT_ERROR; + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); + goto f_err; + } + } + else +#endif + { + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_INTERNAL_ERROR); + goto err; + } + } + else + { + /* still data left over */ + if (!(alg & SSL_aNULL)) + { + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_INTERNAL_ERROR); + goto err; + } + if (n != 0) + { + al=SSL_AD_DECODE_ERROR; + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE); + goto f_err; + } + } + EVP_PKEY_free(pkey); + return(1); +f_err: + ssl3_send_alert(s,SSL3_AL_FATAL,al); +err: + EVP_PKEY_free(pkey); +#ifndef NO_RSA + if (rsa != NULL) + RSA_free(rsa); +#endif +#ifndef NO_DH + if (dh != NULL) + DH_free(dh); +#endif + return(-1); + } + +static int ssl3_get_certificate_request(SSL *s) + { + int ok,ret=0; + unsigned long n,nc,l; + unsigned int llen,ctype_num,i; + X509_NAME *xn=NULL; + unsigned char *p,*d,*q; + STACK_OF(X509_NAME) *ca_sk=NULL; + + n=ssl3_get_message(s, + SSL3_ST_CR_CERT_REQ_A, + SSL3_ST_CR_CERT_REQ_B, + -1, +#if defined(MSDOS) && !defined(WIN32) + 1024*30, /* 30k max cert list :-) */ +#else + 1024*100, /* 100k max cert list :-) */ +#endif + &ok); + + if (!ok) return((int)n); + + s->s3->tmp.cert_req=0; + + if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE) + { + s->s3->tmp.reuse_message=1; + return(1); + } + + if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST) + { + ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); + SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE); + goto err; + } + + /* TLS does not like anon-DH with client cert */ + if (s->version > SSL3_VERSION) + { + l=s->s3->tmp.new_cipher->algorithms; + if (l & SSL_aNULL) + { + ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); + SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER); + goto err; + } + } + + d=p=(unsigned char *)s->init_buf->data; + + if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL) + { + SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE); + goto err; + } + + /* get the certificate types */ + ctype_num= *(p++); + if (ctype_num > SSL3_CT_NUMBER) + ctype_num=SSL3_CT_NUMBER; + for (i=0; i<ctype_num; i++) + s->s3->tmp.ctype[i]= p[i]; + p+=ctype_num; + + /* get the CA RDNs */ + n2s(p,llen); +#if 0 +{ +FILE *out; +out=fopen("/tmp/vsign.der","w"); +fwrite(p,1,llen,out); +fclose(out); +} +#endif + + if ((llen+ctype_num+2+1) != n) + { + ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); + SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH); + goto err; + } + + for (nc=0; nc<llen; ) + { + n2s(p,l); + if ((l+nc+2) > llen) + { + if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG)) + goto cont; /* netscape bugs */ + ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); + SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG); + goto err; + } + + q=p; + + if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL) + { + /* If netscape tollerance is on, ignore errors */ + if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG) + goto cont; + else + { + ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); + SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB); + goto err; + } + } + + if (q != (p+l)) + { + ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); + SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH); + goto err; + } + if (!sk_X509_NAME_push(ca_sk,xn)) + { + SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE); + goto err; + } + + p+=l; + nc+=l+2; + } + + if (0) + { +cont: + ERR_clear_error(); + } + + /* we should setup a certficate to return.... */ + s->s3->tmp.cert_req=1; + s->s3->tmp.ctype_num=ctype_num; + if (s->s3->tmp.ca_names != NULL) + sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free); + s->s3->tmp.ca_names=ca_sk; + ca_sk=NULL; + + ret=1; +err: + if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free); + return(ret); + } + +static int ca_dn_cmp(X509_NAME **a, X509_NAME **b) + { + return(X509_NAME_cmp(*a,*b)); + } + +static int ssl3_get_server_done(SSL *s) + { + int ok,ret=0; + long n; + + n=ssl3_get_message(s, + SSL3_ST_CR_SRVR_DONE_A, + SSL3_ST_CR_SRVR_DONE_B, + SSL3_MT_SERVER_DONE, + 30, /* should be very small, like 0 :-) */ + &ok); + + if (!ok) return((int)n); + if (n > 0) + { + /* should contain no data */ + ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); + SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH); + } + ret=1; + return(ret); + } + +static int ssl3_send_client_key_exchange(SSL *s) + { + unsigned char *p,*d; + int n; + unsigned long l; +#ifndef NO_RSA + unsigned char *q; + EVP_PKEY *pkey=NULL; +#endif + + if (s->state == SSL3_ST_CW_KEY_EXCH_A) + { + d=(unsigned char *)s->init_buf->data; + p= &(d[4]); + + l=s->s3->tmp.new_cipher->algorithms; + +#ifndef NO_RSA + if (l & SSL_kRSA) + { + RSA *rsa; + unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH]; + + if (s->session->sess_cert->peer_rsa_tmp != NULL) + rsa=s->session->sess_cert->peer_rsa_tmp; + else + { + pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); + if ((pkey == NULL) || + (pkey->type != EVP_PKEY_RSA) || + (pkey->pkey.rsa == NULL)) + { + SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_INTERNAL_ERROR); + goto err; + } + rsa=pkey->pkey.rsa; + EVP_PKEY_free(pkey); + } + + tmp_buf[0]=s->client_version>>8; + tmp_buf[1]=s->client_version&0xff; + RAND_bytes(&(tmp_buf[2]),SSL_MAX_MASTER_KEY_LENGTH-2); + + s->session->master_key_length=SSL_MAX_MASTER_KEY_LENGTH; + + q=p; + /* Fix buf for TLS and beyond */ + if (s->version > SSL3_VERSION) + p+=2; + n=RSA_public_encrypt(SSL_MAX_MASTER_KEY_LENGTH, + tmp_buf,p,rsa,RSA_PKCS1_PADDING); +#ifdef PKCS1_CHECK + if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++; + if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70; +#endif + if (n <= 0) + { + SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT); + goto err; + } + + /* Fix buf for TLS and beyond */ + if (s->version > SSL3_VERSION) + { + s2n(n,q); + n+=2; + } + + s->session->master_key_length= + s->method->ssl3_enc->generate_master_secret(s, + s->session->master_key, + tmp_buf,SSL_MAX_MASTER_KEY_LENGTH); + memset(tmp_buf,0,SSL_MAX_MASTER_KEY_LENGTH); + } + else +#endif +#ifndef NO_DH + if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) + { + DH *dh_srvr,*dh_clnt; + + if (s->session->sess_cert->peer_dh_tmp != NULL) + dh_srvr=s->session->sess_cert->peer_dh_tmp; + else + { + /* we get them from the cert */ + ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); + SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS); + goto err; + } + + /* generate a new random key */ + if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL) + { + SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); + goto err; + } + if (!DH_generate_key(dh_clnt)) + { + SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); + goto err; + } + + /* use the 'p' output buffer for the DH key, but + * make sure to clear it out afterwards */ + + n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt); + + if (n <= 0) + { + SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); + goto err; + } + + /* generate master key from the result */ + s->session->master_key_length= + s->method->ssl3_enc->generate_master_secret(s, + s->session->master_key,p,n); + /* clean up */ + memset(p,0,n); + + /* send off the data */ + n=BN_num_bytes(dh_clnt->pub_key); + s2n(n,p); + BN_bn2bin(dh_clnt->pub_key,p); + n+=2; + + DH_free(dh_clnt); + + /* perhaps clean things up a bit EAY EAY EAY EAY*/ + } + else +#endif + { + ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); + SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_INTERNAL_ERROR); + goto err; + } + + *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE; + l2n3(n,d); + + s->state=SSL3_ST_CW_KEY_EXCH_B; + /* number of bytes to write */ + s->init_num=n+4; + s->init_off=0; + } + + /* SSL3_ST_CW_KEY_EXCH_B */ + return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); +err: + return(-1); + } + +static int ssl3_send_client_verify(SSL *s) + { + unsigned char *p,*d; + unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH]; + EVP_PKEY *pkey; +#ifndef NO_RSA + int i=0; +#endif + unsigned long n; +#ifndef NO_DSA + int j; +#endif + + if (s->state == SSL3_ST_CW_CERT_VRFY_A) + { + d=(unsigned char *)s->init_buf->data; + p= &(d[4]); + pkey=s->cert->key->privatekey; + + s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2), + &(data[MD5_DIGEST_LENGTH])); + +#ifndef NO_RSA + if (pkey->type == EVP_PKEY_RSA) + { + s->method->ssl3_enc->cert_verify_mac(s, + &(s->s3->finish_dgst1),&(data[0])); + i=RSA_private_encrypt( + MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH, + data,&(p[2]),pkey->pkey.rsa, + RSA_PKCS1_PADDING); + if (i <= 0) + { + SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB); + goto err; + } + s2n(i,p); + n=i+2; + } + else +#endif +#ifndef NO_DSA + if (pkey->type == EVP_PKEY_DSA) + { + if (!DSA_sign(pkey->save_type, + &(data[MD5_DIGEST_LENGTH]), + SHA_DIGEST_LENGTH,&(p[2]), + (unsigned int *)&j,pkey->pkey.dsa)) + { + SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB); + goto err; + } + s2n(j,p); + n=j+2; + } + else +#endif + { + SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,SSL_R_INTERNAL_ERROR); + goto err; + } + *(d++)=SSL3_MT_CERTIFICATE_VERIFY; + l2n3(n,d); + + s->init_num=(int)n+4; + s->init_off=0; + } + return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); +err: + return(-1); + } + +static int ssl3_send_client_certificate(SSL *s) + { + X509 *x509=NULL; + EVP_PKEY *pkey=NULL; + int i; + unsigned long l; + + if (s->state == SSL3_ST_CW_CERT_A) + { + if ((s->cert == NULL) || + (s->cert->key->x509 == NULL) || + (s->cert->key->privatekey == NULL)) + s->state=SSL3_ST_CW_CERT_B; + else + s->state=SSL3_ST_CW_CERT_C; + } + + /* We need to get a client cert */ + if (s->state == SSL3_ST_CW_CERT_B) + { + /* If we get an error, we need to + * ssl->rwstate=SSL_X509_LOOKUP; return(-1); + * We then get retied later */ + i=0; + if (s->ctx->client_cert_cb != NULL) + i=s->ctx->client_cert_cb(s,&(x509),&(pkey)); + if (i < 0) + { + s->rwstate=SSL_X509_LOOKUP; + return(-1); + } + s->rwstate=SSL_NOTHING; + if ((i == 1) && (pkey != NULL) && (x509 != NULL)) + { + s->state=SSL3_ST_CW_CERT_B; + if ( !SSL_use_certificate(s,x509) || + !SSL_use_PrivateKey(s,pkey)) + i=0; + } + else if (i == 1) + { + i=0; + SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK); + } + + if (x509 != NULL) X509_free(x509); + if (pkey != NULL) EVP_PKEY_free(pkey); + if (i == 0) + { + if (s->version == SSL3_VERSION) + { + s->s3->tmp.cert_req=0; + ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE); + return(1); + } + else + { + s->s3->tmp.cert_req=2; + } + } + + /* Ok, we have a cert */ + s->state=SSL3_ST_CW_CERT_C; + } + + if (s->state == SSL3_ST_CW_CERT_C) + { + s->state=SSL3_ST_CW_CERT_D; + l=ssl3_output_cert_chain(s, + (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509); + s->init_num=(int)l; + s->init_off=0; + } + /* SSL3_ST_CW_CERT_D */ + return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); + } + +#define has_bits(i,m) (((i)&(m)) == (m)) + +static int ssl3_check_cert_and_algorithm(SSL *s) + { + int i,idx; + long algs; + EVP_PKEY *pkey=NULL; + SESS_CERT *sc; +#ifndef NO_RSA + RSA *rsa; +#endif +#ifndef NO_DH + DH *dh; +#endif + + sc=s->session->sess_cert; + + if (sc == NULL) + { + SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_INTERNAL_ERROR); + goto err; + } + + algs=s->s3->tmp.new_cipher->algorithms; + + /* we don't have a certificate */ + if (algs & (SSL_aDH|SSL_aNULL)) + return(1); + +#ifndef NO_RSA + rsa=s->session->sess_cert->peer_rsa_tmp; +#endif +#ifndef NO_DH + dh=s->session->sess_cert->peer_dh_tmp; +#endif + + /* This is the passed certificate */ + + idx=sc->peer_cert_type; + pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509); + i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey); + EVP_PKEY_free(pkey); + + + /* Check that we have a certificate if we require one */ + if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN)) + { + SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT); + goto f_err; + } +#ifndef NO_DSA + else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN)) + { + SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT); + goto f_err; + } +#endif +#ifndef NO_RSA + if ((algs & SSL_kRSA) && + !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL))) + { + SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT); + goto f_err; + } +#endif +#ifndef NO_DH + if ((algs & SSL_kEDH) && + !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL))) + { + SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY); + goto f_err; + } + else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA)) + { + SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT); + goto f_err; + } +#ifndef NO_DSA + else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA)) + { + SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT); + goto f_err; + } +#endif +#endif + + if (SSL_IS_EXPORT(algs) && !has_bits(i,EVP_PKT_EXP)) + { +#ifndef NO_RSA + if (algs & SSL_kRSA) + { + if (rsa == NULL + || RSA_size(rsa) > SSL_EXPORT_PKEYLENGTH(algs)) + { + SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY); + goto f_err; + } + } + else +#endif +#ifndef NO_DH + if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) + { + if (dh == NULL + || DH_size(dh) > SSL_EXPORT_PKEYLENGTH(algs)) + { + SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY); + goto f_err; + } + } + else +#endif + { + SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE); + goto f_err; + } + } + return(1); +f_err: + ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); +err: + return(0); + } + |
