diff options
Diffstat (limited to 'openssl/ssl/s2_clnt.c')
| -rw-r--r-- | openssl/ssl/s2_clnt.c | 1927 |
1 files changed, 947 insertions, 980 deletions
diff --git a/openssl/ssl/s2_clnt.c b/openssl/ssl/s2_clnt.c index 03b6cf967..69da6b142 100644 --- a/openssl/ssl/s2_clnt.c +++ b/openssl/ssl/s2_clnt.c @@ -5,21 +5,21 @@ * 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: @@ -34,10 +34,10 @@ * 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 + * 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 @@ -49,7 +49,7 @@ * 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 @@ -63,7 +63,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * 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 @@ -111,1017 +111,984 @@ #include "ssl_locl.h" #ifndef OPENSSL_NO_SSL2 -#include <stdio.h> -#include <openssl/rand.h> -#include <openssl/buffer.h> -#include <openssl/objects.h> -#include <openssl/evp.h> +# include <stdio.h> +# include <openssl/rand.h> +# include <openssl/buffer.h> +# include <openssl/objects.h> +# include <openssl/evp.h> static const SSL_METHOD *ssl2_get_client_method(int ver); static int get_server_finished(SSL *s); static int get_server_verify(SSL *s); static int get_server_hello(SSL *s); -static int client_hello(SSL *s); +static int client_hello(SSL *s); static int client_master_key(SSL *s); static int client_finished(SSL *s); static int client_certificate(SSL *s); static int ssl_rsa_public_encrypt(SESS_CERT *sc, int len, unsigned char *from, - unsigned char *to,int padding); -#define BREAK break + unsigned char *to, int padding); +# define BREAK break static const SSL_METHOD *ssl2_get_client_method(int ver) - { - if (ver == SSL2_VERSION) - return(SSLv2_client_method()); - else - return(NULL); - } +{ + if (ver == SSL2_VERSION) + return (SSLv2_client_method()); + else + return (NULL); +} IMPLEMENT_ssl2_meth_func(SSLv2_client_method, - ssl_undefined_function, - ssl2_connect, - ssl2_get_client_method) + ssl_undefined_function, + ssl2_connect, ssl2_get_client_method) int ssl2_connect(SSL *s) - { - unsigned long l=(unsigned long)time(NULL); - BUF_MEM *buf=NULL; - int ret= -1; - void (*cb)(const SSL *ssl,int type,int val)=NULL; - int new_state,state; - - RAND_add(&l,sizeof(l),0); - 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; - - /* init things to blank */ - s->in_handshake++; - if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s); - - 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: - - s->server=0; - if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1); - - s->version=SSL2_VERSION; - s->type=SSL_ST_CONNECT; - - buf=s->init_buf; - if ((buf == NULL) && ((buf=BUF_MEM_new()) == NULL)) - { - ret= -1; - goto end; - } - if (!BUF_MEM_grow(buf, - SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)) - { - if (buf == s->init_buf) - buf=NULL; - ret= -1; - goto end; - } - s->init_buf=buf; - buf=NULL; - s->init_num=0; - s->state=SSL2_ST_SEND_CLIENT_HELLO_A; - s->ctx->stats.sess_connect++; - s->handshake_func=ssl2_connect; - BREAK; - - case SSL2_ST_SEND_CLIENT_HELLO_A: - case SSL2_ST_SEND_CLIENT_HELLO_B: - s->shutdown=0; - ret=client_hello(s); - if (ret <= 0) goto end; - s->init_num=0; - s->state=SSL2_ST_GET_SERVER_HELLO_A; - BREAK; - - case SSL2_ST_GET_SERVER_HELLO_A: - case SSL2_ST_GET_SERVER_HELLO_B: - ret=get_server_hello(s); - if (ret <= 0) goto end; - s->init_num=0; - if (!s->hit) /* new session */ - { - s->state=SSL2_ST_SEND_CLIENT_MASTER_KEY_A; - BREAK; - } - else - { - s->state=SSL2_ST_CLIENT_START_ENCRYPTION; - break; - } - - case SSL2_ST_SEND_CLIENT_MASTER_KEY_A: - case SSL2_ST_SEND_CLIENT_MASTER_KEY_B: - ret=client_master_key(s); - if (ret <= 0) goto end; - s->init_num=0; - s->state=SSL2_ST_CLIENT_START_ENCRYPTION; - break; - - case SSL2_ST_CLIENT_START_ENCRYPTION: - /* Ok, we now have all the stuff needed to - * start encrypting, so lets fire it up :-) */ - if (!ssl2_enc_init(s,1)) - { - ret= -1; - goto end; - } - s->s2->clear_text=0; - s->state=SSL2_ST_SEND_CLIENT_FINISHED_A; - break; - - case SSL2_ST_SEND_CLIENT_FINISHED_A: - case SSL2_ST_SEND_CLIENT_FINISHED_B: - ret=client_finished(s); - if (ret <= 0) goto end; - s->init_num=0; - s->state=SSL2_ST_GET_SERVER_VERIFY_A; - break; - - case SSL2_ST_GET_SERVER_VERIFY_A: - case SSL2_ST_GET_SERVER_VERIFY_B: - ret=get_server_verify(s); - if (ret <= 0) goto end; - s->init_num=0; - s->state=SSL2_ST_GET_SERVER_FINISHED_A; - break; - - case SSL2_ST_GET_SERVER_FINISHED_A: - case SSL2_ST_GET_SERVER_FINISHED_B: - ret=get_server_finished(s); - if (ret <= 0) goto end; - break; - - case SSL2_ST_SEND_CLIENT_CERTIFICATE_A: - case SSL2_ST_SEND_CLIENT_CERTIFICATE_B: - case SSL2_ST_SEND_CLIENT_CERTIFICATE_C: - case SSL2_ST_SEND_CLIENT_CERTIFICATE_D: - case SSL2_ST_X509_GET_CLIENT_CERTIFICATE: - ret=client_certificate(s); - if (ret <= 0) goto end; - s->init_num=0; - s->state=SSL2_ST_GET_SERVER_FINISHED_A; - break; - - case SSL_ST_OK: - if (s->init_buf != NULL) - { - BUF_MEM_free(s->init_buf); - s->init_buf=NULL; - } - s->init_num=0; - /* ERR_clear_error();*/ - - /* If we want to cache session-ids in the client - * and we successfully add the session-id to the - * cache, and there is a callback, then pass it out. - * 26/11/96 - eay - only add if not a re-used session. - */ - - ssl_update_cache(s,SSL_SESS_CACHE_CLIENT); - if (s->hit) s->ctx->stats.sess_hit++; - - ret=1; - /* s->server=0; */ - s->ctx->stats.sess_connect_good++; - - if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1); - - goto end; - /* break; */ - default: - SSLerr(SSL_F_SSL2_CONNECT,SSL_R_UNKNOWN_STATE); - return(-1); - /* break; */ - } - - 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 (buf != NULL) - BUF_MEM_free(buf); - if (cb != NULL) - cb(s,SSL_CB_CONNECT_EXIT,ret); - return(ret); - } +{ + unsigned long l = (unsigned long)time(NULL); + BUF_MEM *buf = NULL; + int ret = -1; + void (*cb) (const SSL *ssl, int type, int val) = NULL; + int new_state, state; + + RAND_add(&l, sizeof(l), 0); + 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; + + /* init things to blank */ + s->in_handshake++; + if (!SSL_in_init(s) || SSL_in_before(s)) + SSL_clear(s); + + 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: + + s->server = 0; + if (cb != NULL) + cb(s, SSL_CB_HANDSHAKE_START, 1); + + s->version = SSL2_VERSION; + s->type = SSL_ST_CONNECT; + + buf = s->init_buf; + if ((buf == NULL) && ((buf = BUF_MEM_new()) == NULL)) { + ret = -1; + goto end; + } + if (!BUF_MEM_grow(buf, SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)) { + if (buf == s->init_buf) + buf = NULL; + ret = -1; + goto end; + } + s->init_buf = buf; + buf = NULL; + s->init_num = 0; + s->state = SSL2_ST_SEND_CLIENT_HELLO_A; + s->ctx->stats.sess_connect++; + s->handshake_func = ssl2_connect; + BREAK; + + case SSL2_ST_SEND_CLIENT_HELLO_A: + case SSL2_ST_SEND_CLIENT_HELLO_B: + s->shutdown = 0; + ret = client_hello(s); + if (ret <= 0) + goto end; + s->init_num = 0; + s->state = SSL2_ST_GET_SERVER_HELLO_A; + BREAK; + + case SSL2_ST_GET_SERVER_HELLO_A: + case SSL2_ST_GET_SERVER_HELLO_B: + ret = get_server_hello(s); + if (ret <= 0) + goto end; + s->init_num = 0; + if (!s->hit) { /* new session */ + s->state = SSL2_ST_SEND_CLIENT_MASTER_KEY_A; + BREAK; + } else { + s->state = SSL2_ST_CLIENT_START_ENCRYPTION; + break; + } + + case SSL2_ST_SEND_CLIENT_MASTER_KEY_A: + case SSL2_ST_SEND_CLIENT_MASTER_KEY_B: + ret = client_master_key(s); + if (ret <= 0) + goto end; + s->init_num = 0; + s->state = SSL2_ST_CLIENT_START_ENCRYPTION; + break; + + case SSL2_ST_CLIENT_START_ENCRYPTION: + /* + * Ok, we now have all the stuff needed to start encrypting, so + * lets fire it up :-) + */ + if (!ssl2_enc_init(s, 1)) { + ret = -1; + goto end; + } + s->s2->clear_text = 0; + s->state = SSL2_ST_SEND_CLIENT_FINISHED_A; + break; + + case SSL2_ST_SEND_CLIENT_FINISHED_A: + case SSL2_ST_SEND_CLIENT_FINISHED_B: + ret = client_finished(s); + if (ret <= 0) + goto end; + s->init_num = 0; + s->state = SSL2_ST_GET_SERVER_VERIFY_A; + break; + + case SSL2_ST_GET_SERVER_VERIFY_A: + case SSL2_ST_GET_SERVER_VERIFY_B: + ret = get_server_verify(s); + if (ret <= 0) + goto end; + s->init_num = 0; + s->state = SSL2_ST_GET_SERVER_FINISHED_A; + break; + + case SSL2_ST_GET_SERVER_FINISHED_A: + case SSL2_ST_GET_SERVER_FINISHED_B: + ret = get_server_finished(s); + if (ret <= 0) + goto end; + break; + + case SSL2_ST_SEND_CLIENT_CERTIFICATE_A: + case SSL2_ST_SEND_CLIENT_CERTIFICATE_B: + case SSL2_ST_SEND_CLIENT_CERTIFICATE_C: + case SSL2_ST_SEND_CLIENT_CERTIFICATE_D: + case SSL2_ST_X509_GET_CLIENT_CERTIFICATE: + ret = client_certificate(s); + if (ret <= 0) + goto end; + s->init_num = 0; + s->state = SSL2_ST_GET_SERVER_FINISHED_A; + break; + + case SSL_ST_OK: + if (s->init_buf != NULL) { + BUF_MEM_free(s->init_buf); + s->init_buf = NULL; + } + s->init_num = 0; + /* ERR_clear_error(); */ + + /* + * If we want to cache session-ids in the client and we + * successfully add the session-id to the cache, and there is a + * callback, then pass it out. 26/11/96 - eay - only add if not a + * re-used session. + */ + + ssl_update_cache(s, SSL_SESS_CACHE_CLIENT); + if (s->hit) + s->ctx->stats.sess_hit++; + + ret = 1; + /* s->server=0; */ + s->ctx->stats.sess_connect_good++; + + if (cb != NULL) + cb(s, SSL_CB_HANDSHAKE_DONE, 1); + + goto end; + /* break; */ + default: + SSLerr(SSL_F_SSL2_CONNECT, SSL_R_UNKNOWN_STATE); + return (-1); + /* break; */ + } + + 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 (buf != NULL) + BUF_MEM_free(buf); + if (cb != NULL) + cb(s, SSL_CB_CONNECT_EXIT, ret); + return (ret); +} static int get_server_hello(SSL *s) - { - unsigned char *buf; - unsigned char *p; - int i,j; - unsigned long len; - STACK_OF(SSL_CIPHER) *sk=NULL,*cl, *prio, *allow; - - buf=(unsigned char *)s->init_buf->data; - p=buf; - if (s->state == SSL2_ST_GET_SERVER_HELLO_A) - { - i=ssl2_read(s,(char *)&(buf[s->init_num]),11-s->init_num); - if (i < (11-s->init_num)) - return(ssl2_part_read(s,SSL_F_GET_SERVER_HELLO,i)); - s->init_num = 11; - - if (*(p++) != SSL2_MT_SERVER_HELLO) - { - if (p[-1] != SSL2_MT_ERROR) - { - ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); - SSLerr(SSL_F_GET_SERVER_HELLO, - SSL_R_READ_WRONG_PACKET_TYPE); - } - else - SSLerr(SSL_F_GET_SERVER_HELLO, - SSL_R_PEER_ERROR); - return(-1); - } -#if 0 - s->hit=(*(p++))?1:0; - /* Some [PPC?] compilers fail to increment p in above - statement, e.g. one provided with Rhapsody 5.5, but - most recent example XL C 11.1 for AIX, even without - optimization flag... */ -#else - s->hit=(*p)?1:0; p++; -#endif - s->s2->tmp.cert_type= *(p++); - n2s(p,i); - if (i < s->version) s->version=i; - n2s(p,i); s->s2->tmp.cert_length=i; - n2s(p,i); s->s2->tmp.csl=i; - n2s(p,i); s->s2->tmp.conn_id_length=i; - s->state=SSL2_ST_GET_SERVER_HELLO_B; - } - - /* SSL2_ST_GET_SERVER_HELLO_B */ - len = 11 + (unsigned long)s->s2->tmp.cert_length + (unsigned long)s->s2->tmp.csl + (unsigned long)s->s2->tmp.conn_id_length; - if (len > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER) - { - SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_MESSAGE_TOO_LONG); - return -1; - } - j = (int)len - s->init_num; - i = ssl2_read(s,(char *)&(buf[s->init_num]),j); - if (i != j) return(ssl2_part_read(s,SSL_F_GET_SERVER_HELLO,i)); - if (s->msg_callback) - s->msg_callback(0, s->version, 0, buf, (size_t)len, s, s->msg_callback_arg); /* SERVER-HELLO */ - - /* things are looking good */ - - p = buf + 11; - if (s->hit) - { - if (s->s2->tmp.cert_length != 0) - { - SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CERT_LENGTH_NOT_ZERO); - return(-1); - } - if (s->s2->tmp.cert_type != 0) - { - if (!(s->options & - SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG)) - { - SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CERT_TYPE_NOT_ZERO); - return(-1); - } - } - if (s->s2->tmp.csl != 0) - { - SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CIPHER_LIST_NOT_ZERO); - return(-1); - } - } - else - { -#ifdef undef - /* very bad */ - memset(s->session->session_id,0, - SSL_MAX_SSL_SESSION_ID_LENGTH_IN_BYTES); - s->session->session_id_length=0; - */ -#endif +{ + unsigned char *buf; + unsigned char *p; + int i, j; + unsigned long len; + STACK_OF(SSL_CIPHER) *sk = NULL, *cl, *prio, *allow; + + buf = (unsigned char *)s->init_buf->data; + p = buf; + if (s->state == SSL2_ST_GET_SERVER_HELLO_A) { + i = ssl2_read(s, (char *)&(buf[s->init_num]), 11 - s->init_num); + if (i < (11 - s->init_num)) + return (ssl2_part_read(s, SSL_F_GET_SERVER_HELLO, i)); + s->init_num = 11; + + if (*(p++) != SSL2_MT_SERVER_HELLO) { + if (p[-1] != SSL2_MT_ERROR) { + ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); + SSLerr(SSL_F_GET_SERVER_HELLO, SSL_R_READ_WRONG_PACKET_TYPE); + } else + SSLerr(SSL_F_GET_SERVER_HELLO, SSL_R_PEER_ERROR); + return (-1); + } +# if 0 + s->hit = (*(p++)) ? 1 : 0; + /* + * Some [PPC?] compilers fail to increment p in above statement, e.g. + * one provided with Rhapsody 5.5, but most recent example XL C 11.1 + * for AIX, even without optimization flag... + */ +# else + s->hit = (*p) ? 1 : 0; + p++; +# endif + s->s2->tmp.cert_type = *(p++); + n2s(p, i); + if (i < s->version) + s->version = i; + n2s(p, i); + s->s2->tmp.cert_length = i; + n2s(p, i); + s->s2->tmp.csl = i; + n2s(p, i); + s->s2->tmp.conn_id_length = i; + s->state = SSL2_ST_GET_SERVER_HELLO_B; + } + + /* SSL2_ST_GET_SERVER_HELLO_B */ + len = + 11 + (unsigned long)s->s2->tmp.cert_length + + (unsigned long)s->s2->tmp.csl + + (unsigned long)s->s2->tmp.conn_id_length; + if (len > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER) { + SSLerr(SSL_F_GET_SERVER_HELLO, SSL_R_MESSAGE_TOO_LONG); + return -1; + } + j = (int)len - s->init_num; + i = ssl2_read(s, (char *)&(buf[s->init_num]), j); + if (i != j) + return (ssl2_part_read(s, SSL_F_GET_SERVER_HELLO, i)); + if (s->msg_callback) { + /* SERVER-HELLO */ + s->msg_callback(0, s->version, 0, buf, (size_t)len, s, + s->msg_callback_arg); + } + + /* things are looking good */ + + p = buf + 11; + if (s->hit) { + if (s->s2->tmp.cert_length != 0) { + SSLerr(SSL_F_GET_SERVER_HELLO, SSL_R_REUSE_CERT_LENGTH_NOT_ZERO); + return (-1); + } + if (s->s2->tmp.cert_type != 0) { + if (!(s->options & SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG)) { + SSLerr(SSL_F_GET_SERVER_HELLO, + SSL_R_REUSE_CERT_TYPE_NOT_ZERO); + return (-1); + } + } + if (s->s2->tmp.csl != 0) { + SSLerr(SSL_F_GET_SERVER_HELLO, SSL_R_REUSE_CIPHER_LIST_NOT_ZERO); + return (-1); + } + } else { +# if 0 + /* very bad */ + memset(s->session->session_id, 0, + SSL_MAX_SSL_SESSION_ID_LENGTH_IN_BYTES); + s->session->session_id_length = 0; +# endif - /* we need to do this in case we were trying to reuse a - * client session but others are already reusing it. - * If this was a new 'blank' session ID, the session-id - * length will still be 0 */ - if (s->session->session_id_length > 0) - { - if (!ssl_get_new_session(s,0)) - { - ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); - return(-1); - } - } - - if (ssl2_set_certificate(s,s->s2->tmp.cert_type, - s->s2->tmp.cert_length,p) <= 0) - { - ssl2_return_error(s,SSL2_PE_BAD_CERTIFICATE); - return(-1); - } - p+=s->s2->tmp.cert_length; - - if (s->s2->tmp.csl == 0) - { - ssl2_return_error(s,SSL2_PE_NO_CIPHER); - SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_NO_CIPHER_LIST); - return(-1); - } - - /* We have just received a list of ciphers back from the - * server. We need to get the ones that match, then select - * the one we want the most :-). */ - - /* load the ciphers */ - sk=ssl_bytes_to_cipher_list(s,p,s->s2->tmp.csl, - &s->session->ciphers); - p+=s->s2->tmp.csl; - if (sk == NULL) - { - ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); - SSLerr(SSL_F_GET_SERVER_HELLO,ERR_R_MALLOC_FAILURE); - return(-1); - } - - (void)sk_SSL_CIPHER_set_cmp_func(sk,ssl_cipher_ptr_id_cmp); - - /* get the array of ciphers we will accept */ - cl=SSL_get_ciphers(s); - (void)sk_SSL_CIPHER_set_cmp_func(cl,ssl_cipher_ptr_id_cmp); - - /* - * If server preference flag set, choose the first - * (highest priority) cipher the server sends, otherwise - * client preference has priority. - */ - if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE) - { - prio = sk; - allow = cl; - } - else - { - prio = cl; - allow = sk; - } - /* In theory we could have ciphers sent back that we - * don't want to use but that does not matter since we - * will check against the list we originally sent and - * for performance reasons we should not bother to match - * the two lists up just to check. */ - for (i=0; i<sk_SSL_CIPHER_num(prio); i++) - { - if (sk_SSL_CIPHER_find(allow, - sk_SSL_CIPHER_value(prio,i)) >= 0) - break; - } - - if (i >= sk_SSL_CIPHER_num(prio)) - { - ssl2_return_error(s,SSL2_PE_NO_CIPHER); - SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_NO_CIPHER_MATCH); - return(-1); - } - s->session->cipher=sk_SSL_CIPHER_value(prio,i); - - - if (s->session->peer != NULL) /* can't happen*/ - { - ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); - SSLerr(SSL_F_GET_SERVER_HELLO, ERR_R_INTERNAL_ERROR); - return(-1); - } - - s->session->peer = s->session->sess_cert->peer_key->x509; - /* peer_key->x509 has been set by ssl2_set_certificate. */ - CRYPTO_add(&s->session->peer->references, 1, CRYPTO_LOCK_X509); - } - - if (s->session->sess_cert == NULL - || s->session->peer != s->session->sess_cert->peer_key->x509) - /* can't happen */ - { - ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); - SSLerr(SSL_F_GET_SERVER_HELLO, ERR_R_INTERNAL_ERROR); - return(-1); - } - - s->s2->conn_id_length=s->s2->tmp.conn_id_length; - if (s->s2->conn_id_length > sizeof s->s2->conn_id) - { - ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); - SSLerr(SSL_F_GET_SERVER_HELLO, SSL_R_SSL2_CONNECTION_ID_TOO_LONG); - return -1; - } - memcpy(s->s2->conn_id,p,s->s2->tmp.conn_id_length); - return(1); - } + /* + * we need to do this in case we were trying to reuse a client + * session but others are already reusing it. If this was a new + * 'blank' session ID, the session-id length will still be 0 + */ + if (s->session->session_id_length > 0) { + if (!ssl_get_new_session(s, 0)) { + ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); + return (-1); + } + } + + if (ssl2_set_certificate(s, s->s2->tmp.cert_type, + s->s2->tmp.cert_length, p) <= 0) { + ssl2_return_error(s, SSL2_PE_BAD_CERTIFICATE); + return (-1); + } + p += s->s2->tmp.cert_length; + + if (s->s2->tmp.csl == 0) { + ssl2_return_error(s, SSL2_PE_NO_CIPHER); + SSLerr(SSL_F_GET_SERVER_HELLO, SSL_R_NO_CIPHER_LIST); + return (-1); + } + + /* + * We have just received a list of ciphers back from the server. We + * need to get the ones that match, then select the one we want the + * most :-). + */ + + /* load the ciphers */ + sk = ssl_bytes_to_cipher_list(s, p, s->s2->tmp.csl, + &s->session->ciphers); + p += s->s2->tmp.csl; + if (sk == NULL) { + ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); + SSLerr(SSL_F_GET_SERVER_HELLO, ERR_R_MALLOC_FAILURE); + return (-1); + } + + (void)sk_SSL_CIPHER_set_cmp_func(sk, ssl_cipher_ptr_id_cmp); + + /* get the array of ciphers we will accept */ + cl = SSL_get_ciphers(s); + (void)sk_SSL_CIPHER_set_cmp_func(cl, ssl_cipher_ptr_id_cmp); + + /* + * If server preference flag set, choose the first + * (highest priority) cipher the server sends, otherwise + * client preference has priority. + */ + if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE) { + prio = sk; + allow = cl; + } else { + prio = cl; + allow = sk; + } + /* + * In theory we could have ciphers sent back that we don't want to + * use but that does not matter since we will check against the list + * we originally sent and for performance reasons we should not + * bother to match the two lists up just to check. + */ + for (i = 0; i < sk_SSL_CIPHER_num(prio); i++) { + if (sk_SSL_CIPHER_find(allow, sk_SSL_CIPHER_value(prio, i)) >= 0) + break; + } + + if (i >= sk_SSL_CIPHER_num(prio)) { + ssl2_return_error(s, SSL2_PE_NO_CIPHER); + SSLerr(SSL_F_GET_SERVER_HELLO, SSL_R_NO_CIPHER_MATCH); + return (-1); + } + s->session->cipher = sk_SSL_CIPHER_value(prio, i); + + if (s->session->peer != NULL) { /* can't happen */ + ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); + SSLerr(SSL_F_GET_SERVER_HELLO, ERR_R_INTERNAL_ERROR); + return (-1); + } + + s->session->peer = s->session->sess_cert->peer_key->x509; + /* peer_key->x509 has been set by ssl2_set_certificate. */ + CRYPTO_add(&s->session->peer->references, 1, CRYPTO_LOCK_X509); + } + + if (s->session->sess_cert == NULL + || s->session->peer != s->session->sess_cert->peer_key->x509) + /* can't happen */ + { + ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); + SSLerr(SSL_F_GET_SERVER_HELLO, ERR_R_INTERNAL_ERROR); + return (-1); + } + + s->s2->conn_id_length = s->s2->tmp.conn_id_length; + if (s->s2->conn_id_length > sizeof s->s2->conn_id) { + ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); + SSLerr(SSL_F_GET_SERVER_HELLO, SSL_R_SSL2_CONNECTION_ID_TOO_LONG); + return -1; + } + memcpy(s->s2->conn_id, p, s->s2->tmp.conn_id_length); + return (1); +} static int client_hello(SSL *s) - { - unsigned char *buf; - unsigned char *p,*d; -/* CIPHER **cipher;*/ - int i,n,j; - - buf=(unsigned char *)s->init_buf->data; - if (s->state == SSL2_ST_SEND_CLIENT_HELLO_A) - { - if ((s->session == NULL) || - (s->session->ssl_version != s->version)) - { - if (!ssl_get_new_session(s,0)) - { - ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); - return(-1); - } - } - /* else use the pre-loaded session */ - - p=buf; /* header */ - d=p+9; /* data section */ - *(p++)=SSL2_MT_CLIENT_HELLO; /* type */ - s2n(SSL2_VERSION,p); /* version */ - n=j=0; - - n=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),d,0); - d+=n; - - if (n == 0) - { - SSLerr(SSL_F_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE); - return(-1); - } - - s2n(n,p); /* cipher spec num bytes */ - - if ((s->session->session_id_length > 0) && - (s->session->session_id_length <= - SSL2_MAX_SSL_SESSION_ID_LENGTH)) - { - i=s->session->session_id_length; - s2n(i,p); /* session id length */ - memcpy(d,s->session->session_id,(unsigned int)i); - d+=i; - } - else - { - s2n(0,p); - } - - s->s2->challenge_length=SSL2_CHALLENGE_LENGTH; - s2n(SSL2_CHALLENGE_LENGTH,p); /* challenge length */ - /*challenge id data*/ - if (RAND_pseudo_bytes(s->s2->challenge,SSL2_CHALLENGE_LENGTH) <= 0) - return -1; - memcpy(d,s->s2->challenge,SSL2_CHALLENGE_LENGTH); - d+=SSL2_CHALLENGE_LENGTH; - - s->state=SSL2_ST_SEND_CLIENT_HELLO_B; - s->init_num=d-buf; - s->init_off=0; - } - /* SSL2_ST_SEND_CLIENT_HELLO_B */ - return(ssl2_do_write(s)); - } +{ + unsigned char *buf; + unsigned char *p, *d; +/* CIPHER **cipher;*/ + int i, n, j; + + buf = (unsigned char *)s->init_buf->data; + if (s->state == SSL2_ST_SEND_CLIENT_HELLO_A) { + if ((s->session == NULL) || (s->session->ssl_version != s->version)) { + if (!ssl_get_new_session(s, 0)) { + ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); + return (-1); + } + } + /* else use the pre-loaded session */ + + p = buf; /* header */ + d = p + 9; /* data section */ + *(p++) = SSL2_MT_CLIENT_HELLO; /* type */ + s2n(SSL2_VERSION, p); /* version */ + n = j = 0; + + n = ssl_cipher_list_to_bytes(s, SSL_get_ciphers(s), d, 0); + d += n; + + if (n == 0) { + SSLerr(SSL_F_CLIENT_HELLO, SSL_R_NO_CIPHERS_AVAILABLE); + return (-1); + } + + s2n(n, p); /* cipher spec num bytes */ + + if ((s->session->session_id_length > 0) && + (s->session->session_id_length <= + SSL2_MAX_SSL_SESSION_ID_LENGTH)) { + i = s->session->session_id_length; + s2n(i, p); /* session id length */ + memcpy(d, s->session->session_id, (unsigned int)i); + d += i; + } else { + s2n(0, p); + } + + s->s2->challenge_length = SSL2_CHALLENGE_LENGTH; + s2n(SSL2_CHALLENGE_LENGTH, p); /* challenge length */ + /* + * challenge id data + */ + if (RAND_pseudo_bytes(s->s2->challenge, SSL2_CHALLENGE_LENGTH) <= 0) + return -1; + memcpy(d, s->s2->challenge, SSL2_CHALLENGE_LENGTH); + d += SSL2_CHALLENGE_LENGTH; + + s->state = SSL2_ST_SEND_CLIENT_HELLO_B; + s->init_num = d - buf; + s->init_off = 0; + } + /* SSL2_ST_SEND_CLIENT_HELLO_B */ + return (ssl2_do_write(s)); +} static int client_master_key(SSL *s) - { - unsigned char *buf; - unsigned char *p,*d; - int clear,enc,karg,i; - SSL_SESSION *sess; - const EVP_CIPHER *c; - const EVP_MD *md; - - buf=(unsigned char *)s->init_buf->data; - if (s->state == SSL2_ST_SEND_CLIENT_MASTER_KEY_A) - { - - if (!ssl_cipher_get_evp(s->session,&c,&md,NULL,NULL,NULL)) - { - ssl2_return_error(s,SSL2_PE_NO_CIPHER); - SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS); - return(-1); - } - sess=s->session; - p=buf; - d=p+10; - *(p++)=SSL2_MT_CLIENT_MASTER_KEY;/* type */ - - i=ssl_put_cipher_by_char(s,sess->cipher,p); - p+=i; - - /* make key_arg data */ - i=EVP_CIPHER_iv_length(c); - sess->key_arg_length=i; - if (i > SSL_MAX_KEY_ARG_LENGTH) - { - ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); - SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR); - return -1; - } - if (i > 0) - if (RAND_pseudo_bytes(sess->key_arg,i) <= 0) - return -1; - - /* make a master key */ - i=EVP_CIPHER_key_length(c); - sess->master_key_length=i; - if (i > 0) - { - if (i > (int)sizeof(sess->master_key)) - { - ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); - SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR); - return -1; - } - if (RAND_bytes(sess->master_key,i) <= 0) - { - ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); - return(-1); - } - } - - if (sess->cipher->algorithm2 & SSL2_CF_8_BYTE_ENC) - enc=8; - else if (SSL_C_IS_EXPORT(sess->cipher)) - enc=5; - else - enc=i; - - if ((int)i < enc) - { - ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); - SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_CIPHER_TABLE_SRC_ERROR); - return(-1); - } - clear=i-enc; - s2n(clear,p); - memcpy(d,sess->master_key,(unsigned int)clear); - d+=clear; - - enc=ssl_rsa_public_encrypt(sess->sess_cert,enc, - &(sess->master_key[clear]),d, - (s->s2->ssl2_rollback)?RSA_SSLV23_PADDING:RSA_PKCS1_PADDING); - if (enc <= 0) - { - ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); - SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_PUBLIC_KEY_ENCRYPT_ERROR); - return(-1); - } -#ifdef PKCS1_CHECK - if (s->options & SSL_OP_PKCS1_CHECK_1) d[1]++; - if (s->options & SSL_OP_PKCS1_CHECK_2) - sess->master_key[clear]++; -#endif - s2n(enc,p); - d+=enc; - karg=sess->key_arg_length; - s2n(karg,p); /* key arg size */ - if (karg > (int)sizeof(sess->key_arg)) - { - ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); - SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR); - return -1; - } - memcpy(d,sess->key_arg,(unsigned int)karg); - d+=karg; - - s->state=SSL2_ST_SEND_CLIENT_MASTER_KEY_B; - s->init_num=d-buf; - s->init_off=0; - } - - /* SSL2_ST_SEND_CLIENT_MASTER_KEY_B */ - return(ssl2_do_write(s)); - } +{ + unsigned char *buf; + unsigned char *p, *d; + int clear, enc, karg, i; + SSL_SESSION *sess; + const EVP_CIPHER *c; + const EVP_MD *md; + + buf = (unsigned char *)s->init_buf->data; + if (s->state == SSL2_ST_SEND_CLIENT_MASTER_KEY_A) { + + if (!ssl_cipher_get_evp(s->session, &c, &md, NULL, NULL, NULL)) { + ssl2_return_error(s, SSL2_PE_NO_CIPHER); + SSLerr(SSL_F_CLIENT_MASTER_KEY, + SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS); + return (-1); + } + sess = s->session; + p = buf; + d = p + 10; + *(p++) = SSL2_MT_CLIENT_MASTER_KEY; /* type */ + + i = ssl_put_cipher_by_char(s, sess->cipher, p); + p += i; + + /* make key_arg data */ + i = EVP_CIPHER_iv_length(c); + sess->key_arg_length = i; + if (i > SSL_MAX_KEY_ARG_LENGTH) { + ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); + SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR); + return -1; + } + if (i > 0) + if (RAND_pseudo_bytes(sess->key_arg, i) <= 0) + return -1; + + /* make a master key */ + i = EVP_CIPHER_key_length(c); + sess->master_key_length = i; + if (i > 0) { + if (i > (int)sizeof(sess->master_key)) { + ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); + SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR); + return -1; + } + if (RAND_bytes(sess->master_key, i) <= 0) { + ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); + return (-1); + } + } + + if (sess->cipher->algorithm2 & SSL2_CF_8_BYTE_ENC) + enc = 8; + else if (SSL_C_IS_EXPORT(sess->cipher)) + enc = 5; + else + enc = i; + + if ((int)i < enc) { + ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); + SSLerr(SSL_F_CLIENT_MASTER_KEY, SSL_R_CIPHER_TABLE_SRC_ERROR); + return (-1); + } + clear = i - enc; + s2n(clear, p); + memcpy(d, sess->master_key, (unsigned int)clear); + d += clear; + + enc = ssl_rsa_public_encrypt(sess->sess_cert, enc, + &(sess->master_key[clear]), d, + (s-> + s2->ssl2_rollback) ? RSA_SSLV23_PADDING + : RSA_PKCS1_PADDING); + if (enc <= 0) { + ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); + SSLerr(SSL_F_CLIENT_MASTER_KEY, SSL_R_PUBLIC_KEY_ENCRYPT_ERROR); + return (-1); + } +# ifdef PKCS1_CHECK + if (s->options & SSL_OP_PKCS1_CHECK_1) + d[1]++; + if (s->options & SSL_OP_PKCS1_CHECK_2) + sess->master_key[clear]++; +# endif + s2n(enc, p); + d += enc; + karg = sess->key_arg_length; + s2n(karg, p); /* key arg size */ + if (karg > (int)sizeof(sess->key_arg)) { + ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); + SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR); + return -1; + } + memcpy(d, sess->key_arg, (unsigned int)karg); + d += karg; + + s->state = SSL2_ST_SEND_CLIENT_MASTER_KEY_B; + s->init_num = d - buf; + s->init_off = 0; + } + + /* SSL2_ST_SEND_CLIENT_MASTER_KEY_B */ + return (ssl2_do_write(s)); +} static int client_finished(SSL *s) - { - unsigned char *p; - - if (s->state == SSL2_ST_SEND_CLIENT_FINISHED_A) - { - p=(unsigned char *)s->init_buf->data; - *(p++)=SSL2_MT_CLIENT_FINISHED; - if (s->s2->conn_id_length > sizeof s->s2->conn_id) - { - SSLerr(SSL_F_CLIENT_FINISHED, ERR_R_INTERNAL_ERROR); - return -1; - } - memcpy(p,s->s2->conn_id,(unsigned int)s->s2->conn_id_length); - - s->state=SSL2_ST_SEND_CLIENT_FINISHED_B; - s->init_num=s->s2->conn_id_length+1; - s->init_off=0; - } - return(ssl2_do_write(s)); - } +{ + unsigned char *p; + + if (s->state == SSL2_ST_SEND_CLIENT_FINISHED_A) { + p = (unsigned char *)s->init_buf->data; + *(p++) = SSL2_MT_CLIENT_FINISHED; + if (s->s2->conn_id_length > sizeof s->s2->conn_id) { + SSLerr(SSL_F_CLIENT_FINISHED, ERR_R_INTERNAL_ERROR); + return -1; + } + memcpy(p, s->s2->conn_id, (unsigned int)s->s2->conn_id_length); + + s->state = SSL2_ST_SEND_CLIENT_FINISHED_B; + s->init_num = s->s2->conn_id_length + 1; + s->init_off = 0; + } + return (ssl2_do_write(s)); +} /* read the data and then respond */ static int client_certificate(SSL *s) - { - unsigned char *buf; - unsigned char *p,*d; - int i; - unsigned int n; - int cert_ch_len; - unsigned char *cert_ch; - - buf=(unsigned char *)s->init_buf->data; - - /* We have a cert associated with the SSL, so attach it to - * the session if it does not have one */ - - if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_A) - { - i=ssl2_read(s,(char *)&(buf[s->init_num]), - SSL2_MAX_CERT_CHALLENGE_LENGTH+2-s->init_num); - if (i<(SSL2_MIN_CERT_CHALLENGE_LENGTH+2-s->init_num)) - return(ssl2_part_read(s,SSL_F_CLIENT_CERTIFICATE,i)); - s->init_num += i; - if (s->msg_callback) - s->msg_callback(0, s->version, 0, buf, (size_t)s->init_num, s, s->msg_callback_arg); /* REQUEST-CERTIFICATE */ - - /* type=buf[0]; */ - /* type eq x509 */ - if (buf[1] != SSL2_AT_MD5_WITH_RSA_ENCRYPTION) - { - ssl2_return_error(s,SSL2_PE_UNSUPPORTED_CERTIFICATE_TYPE); - SSLerr(SSL_F_CLIENT_CERTIFICATE,SSL_R_BAD_AUTHENTICATION_TYPE); - return(-1); - } - - if ((s->cert == NULL) || - (s->cert->key->x509 == NULL) || - (s->cert->key->privatekey == NULL)) - { - s->state=SSL2_ST_X509_GET_CLIENT_CERTIFICATE; - } - else - s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_C; - } - - cert_ch = buf + 2; - cert_ch_len = s->init_num - 2; - - if (s->state == SSL2_ST_X509_GET_CLIENT_CERTIFICATE) - { - X509 *x509=NULL; - EVP_PKEY *pkey=NULL; - - /* If we get an error we need to - * ssl->rwstate=SSL_X509_LOOKUP; - * return(error); - * We should then be retried when things are ok and we - * can get a cert or not */ - - 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=SSL2_ST_SEND_CLIENT_CERTIFICATE_C; - if ( !SSL_use_certificate(s,x509) || - !SSL_use_PrivateKey(s,pkey)) - { - i=0; - } - X509_free(x509); - EVP_PKEY_free(pkey); - } - else if (i == 1) - { - if (x509 != NULL) X509_free(x509); - if (pkey != NULL) EVP_PKEY_free(pkey); - SSLerr(SSL_F_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK); - i=0; - } - - if (i == 0) - { - /* We have no client certificate to respond with - * so send the correct error message back */ - s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_B; - p=buf; - *(p++)=SSL2_MT_ERROR; - s2n(SSL2_PE_NO_CERTIFICATE,p); - s->init_off=0; - s->init_num=3; - /* Write is done at the end */ - } - } - - if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_B) - { - return(ssl2_do_write(s)); - } - - if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_C) - { - EVP_MD_CTX ctx; - - /* ok, now we calculate the checksum - * do it first so we can reuse buf :-) */ - p=buf; - EVP_MD_CTX_init(&ctx); - EVP_SignInit_ex(&ctx,s->ctx->rsa_md5, NULL); - EVP_SignUpdate(&ctx,s->s2->key_material, - s->s2->key_material_length); - EVP_SignUpdate(&ctx,cert_ch,(unsigned int)cert_ch_len); - i=i2d_X509(s->session->sess_cert->peer_key->x509,&p); - /* Don't update the signature if it fails - FIXME: probably should handle this better */ - if(i > 0) - EVP_SignUpdate(&ctx,buf,(unsigned int)i); - - p=buf; - d=p+6; - *(p++)=SSL2_MT_CLIENT_CERTIFICATE; - *(p++)=SSL2_CT_X509_CERTIFICATE; - n=i2d_X509(s->cert->key->x509,&d); - s2n(n,p); - - if (!EVP_SignFinal(&ctx,d,&n,s->cert->key->privatekey)) - { - /* this is not good. If things have failed it - * means there so something wrong with the key. - * We will continue with a 0 length signature - */ - } - EVP_MD_CTX_cleanup(&ctx); - s2n(n,p); - d+=n; - - s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_D; - s->init_num=d-buf; - s->init_off=0; - } - /* if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_D) */ - return(ssl2_do_write(s)); - } +{ + unsigned char *buf; + unsigned char *p, *d; + int i; + unsigned int n; + int cert_ch_len; + unsigned char *cert_ch; + + buf = (unsigned char *)s->init_buf->data; + + /* + * We have a cert associated with the SSL, so attach it to the session if + * it does not have one + */ + + if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_A) { + i = ssl2_read(s, (char *)&(buf[s->init_num]), + SSL2_MAX_CERT_CHALLENGE_LENGTH + 2 - s->init_num); + if (i < (SSL2_MIN_CERT_CHALLENGE_LENGTH + 2 - s->init_num)) + return (ssl2_part_read(s, SSL_F_CLIENT_CERTIFICATE, i)); + s->init_num += i; + if (s->msg_callback) { + /* REQUEST-CERTIFICATE */ + s->msg_callback(0, s->version, 0, buf, (size_t)s->init_num, s, + s->msg_callback_arg); + } + + /* type=buf[0]; */ + /* type eq x509 */ + if (buf[1] != SSL2_AT_MD5_WITH_RSA_ENCRYPTION) { + ssl2_return_error(s, SSL2_PE_UNSUPPORTED_CERTIFICATE_TYPE); + SSLerr(SSL_F_CLIENT_CERTIFICATE, SSL_R_BAD_AUTHENTICATION_TYPE); + return (-1); + } + + if ((s->cert == NULL) || + (s->cert->key->x509 == NULL) || + (s->cert->key->privatekey == NULL)) { + s->state = SSL2_ST_X509_GET_CLIENT_CERTIFICATE; + } else + s->state = SSL2_ST_SEND_CLIENT_CERTIFICATE_C; + } + + cert_ch = buf + 2; + cert_ch_len = s->init_num - 2; + + if (s->state == SSL2_ST_X509_GET_CLIENT_CERTIFICATE) { + X509 *x509 = NULL; + EVP_PKEY *pkey = NULL; + + /* + * If we get an error we need to ssl->rwstate=SSL_X509_LOOKUP; + * return(error); We should then be retried when things are ok and we + * can get a cert or not + */ + + 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 = SSL2_ST_SEND_CLIENT_CERTIFICATE_C; + if (!SSL_use_certificate(s, x509) || !SSL_use_PrivateKey(s, pkey)) { + i = 0; + } + X509_free(x509); + EVP_PKEY_free(pkey); + } else if (i == 1) { + if (x509 != NULL) + X509_free(x509); + if (pkey != NULL) + EVP_PKEY_free(pkey); + SSLerr(SSL_F_CLIENT_CERTIFICATE, + SSL_R_BAD_DATA_RETURNED_BY_CALLBACK); + i = 0; + } + + if (i == 0) { + /* + * We have no client certificate to respond with so send the + * correct error message back + */ + s->state = SSL2_ST_SEND_CLIENT_CERTIFICATE_B; + p = buf; + *(p++) = SSL2_MT_ERROR; + s2n(SSL2_PE_NO_CERTIFICATE, p); + s->init_off = 0; + s->init_num = 3; + /* Write is done at the end */ + } + } + + if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_B) { + return (ssl2_do_write(s)); + } + + if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_C) { + EVP_MD_CTX ctx; + + /* + * ok, now we calculate the checksum do it first so we can reuse buf + * :-) + */ + p = buf; + EVP_MD_CTX_init(&ctx); + EVP_SignInit_ex(&ctx, s->ctx->rsa_md5, NULL); + EVP_SignUpdate(&ctx, s->s2->key_material, s->s2->key_material_length); + EVP_SignUpdate(&ctx, cert_ch, (unsigned int)cert_ch_len); + i = i2d_X509(s->session->sess_cert->peer_key->x509, &p); + /* + * Don't update the signature if it fails - FIXME: probably should + * handle this better + */ + if (i > 0) + EVP_SignUpdate(&ctx, buf, (unsigned int)i); + + p = buf; + d = p + 6; + *(p++) = SSL2_MT_CLIENT_CERTIFICATE; + *(p++) = SSL2_CT_X509_CERTIFICATE; + n = i2d_X509(s->cert->key->x509, &d); + s2n(n, p); + + if (!EVP_SignFinal(&ctx, d, &n, s->cert->key->privatekey)) { + /* + * this is not good. If things have failed it means there so + * something wrong with the key. We will continue with a 0 length + * signature + */ + } + EVP_MD_CTX_cleanup(&ctx); + s2n(n, p); + d += n; + + s->state = SSL2_ST_SEND_CLIENT_CERTIFICATE_D; + s->init_num = d - buf; + s->init_off = 0; + } + /* if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_D) */ + return (ssl2_do_write(s)); +} static int get_server_verify(SSL *s) - { - unsigned char *p; - int i, n, len; - - p=(unsigned char *)s->init_buf->data; - if (s->state == SSL2_ST_GET_SERVER_VERIFY_A) - { - i=ssl2_read(s,(char *)&(p[s->init_num]),1-s->init_num); - if (i < (1-s->init_num)) - return(ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i)); - s->init_num += i; - - s->state= SSL2_ST_GET_SERVER_VERIFY_B; - if (*p != SSL2_MT_SERVER_VERIFY) - { - if (p[0] != SSL2_MT_ERROR) - { - ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); - SSLerr(SSL_F_GET_SERVER_VERIFY, - SSL_R_READ_WRONG_PACKET_TYPE); - } - else - { - SSLerr(SSL_F_GET_SERVER_VERIFY,SSL_R_PEER_ERROR); - /* try to read the error message */ - i=ssl2_read(s,(char *)&(p[s->init_num]),3-s->init_num); - return ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i); - } - return(-1); - } - } - - p=(unsigned char *)s->init_buf->data; - len = 1 + s->s2->challenge_length; - n = len - s->init_num; - i = ssl2_read(s,(char *)&(p[s->init_num]),n); - if (i < n) - return(ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i)); - if (s->msg_callback) - s->msg_callback(0, s->version, 0, p, len, s, s->msg_callback_arg); /* SERVER-VERIFY */ - p += 1; - - if (CRYPTO_memcmp(p,s->s2->challenge,s->s2->challenge_length) != 0) - { - ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); - SSLerr(SSL_F_GET_SERVER_VERIFY,SSL_R_CHALLENGE_IS_DIFFERENT); - return(-1); - } - return(1); - } +{ + unsigned char *p; + int i, n, len; + + p = (unsigned char *)s->init_buf->data; + if (s->state == SSL2_ST_GET_SERVER_VERIFY_A) { + i = ssl2_read(s, (char *)&(p[s->init_num]), 1 - s->init_num); + if (i < (1 - s->init_num)) + return (ssl2_part_read(s, SSL_F_GET_SERVER_VERIFY, i)); + s->init_num += i; + + s->state = SSL2_ST_GET_SERVER_VERIFY_B; + if (*p != SSL2_MT_SERVER_VERIFY) { + if (p[0] != SSL2_MT_ERROR) { + ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); + SSLerr(SSL_F_GET_SERVER_VERIFY, SSL_R_READ_WRONG_PACKET_TYPE); + } else { + SSLerr(SSL_F_GET_SERVER_VERIFY, SSL_R_PEER_ERROR); + /* try to read the error message */ + i = ssl2_read(s, (char *)&(p[s->init_num]), 3 - s->init_num); + return ssl2_part_read(s, SSL_F_GET_SERVER_VERIFY, i); + } + return (-1); + } + } + + p = (unsigned char *)s->init_buf->data; + len = 1 + s->s2->challenge_length; + n = len - s->init_num; + i = ssl2_read(s, (char *)&(p[s->init_num]), n); + if (i < n) + return (ssl2_part_read(s, SSL_F_GET_SERVER_VERIFY, i)); + if (s->msg_callback) { + /* SERVER-VERIFY */ + s->msg_callback(0, s->version, 0, p, len, s, s->msg_callback_arg); + } + p += 1; + + if (CRYPTO_memcmp(p, s->s2->challenge, s->s2->challenge_length) != 0) { + ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); + SSLerr(SSL_F_GET_SERVER_VERIFY, SSL_R_CHALLENGE_IS_DIFFERENT); + return (-1); + } + return (1); +} static int get_server_finished(SSL *s) - { - unsigned char *buf; - unsigned char *p; - int i, n, len; - - buf=(unsigned char *)s->init_buf->data; - p=buf; - if (s->state == SSL2_ST_GET_SERVER_FINISHED_A) - { - i=ssl2_read(s,(char *)&(buf[s->init_num]),1-s->init_num); - if (i < (1-s->init_num)) - return(ssl2_part_read(s,SSL_F_GET_SERVER_FINISHED,i)); - s->init_num += i; - - if (*p == SSL2_MT_REQUEST_CERTIFICATE) - { - s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_A; - return(1); - } - else if (*p != SSL2_MT_SERVER_FINISHED) - { - if (p[0] != SSL2_MT_ERROR) - { - ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); - SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_READ_WRONG_PACKET_TYPE); - } - else - { - SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_PEER_ERROR); - /* try to read the error message */ - i=ssl2_read(s,(char *)&(p[s->init_num]),3-s->init_num); - return ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i); - } - return(-1); - } - s->state=SSL2_ST_GET_SERVER_FINISHED_B; - } - - len = 1 + SSL2_SSL_SESSION_ID_LENGTH; - n = len - s->init_num; - i = ssl2_read(s,(char *)&(buf[s->init_num]), n); - if (i < n) /* XXX could be shorter than SSL2_SSL_SESSION_ID_LENGTH, that's the maximum */ - return(ssl2_part_read(s,SSL_F_GET_SERVER_FINISHED,i)); - s->init_num += i; - if (s->msg_callback) - s->msg_callback(0, s->version, 0, buf, (size_t)s->init_num, s, s->msg_callback_arg); /* SERVER-FINISHED */ - - if (!s->hit) /* new session */ - { - /* new session-id */ - /* Make sure we were not trying to re-use an old SSL_SESSION - * or bad things can happen */ - /* ZZZZZZZZZZZZZ */ - s->session->session_id_length=SSL2_SSL_SESSION_ID_LENGTH; - memcpy(s->session->session_id,p+1,SSL2_SSL_SESSION_ID_LENGTH); - } - else - { - if (!(s->options & SSL_OP_MICROSOFT_SESS_ID_BUG)) - { - if ((s->session->session_id_length > sizeof s->session->session_id) - || (0 != memcmp(buf + 1, s->session->session_id, - (unsigned int)s->session->session_id_length))) - { - ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); - SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_SSL_SESSION_ID_IS_DIFFERENT); - return(-1); - } - } - } - s->state = SSL_ST_OK; - return(1); - } +{ + unsigned char *buf; + unsigned char *p; + int i, n, len; + + buf = (unsigned char *)s->init_buf->data; + p = buf; + if (s->state == SSL2_ST_GET_SERVER_FINISHED_A) { + i = ssl2_read(s, (char *)&(buf[s->init_num]), 1 - s->init_num); + if (i < (1 - s->init_num)) + return (ssl2_part_read(s, SSL_F_GET_SERVER_FINISHED, i)); + s->init_num += i; + + if (*p == SSL2_MT_REQUEST_CERTIFICATE) { + s->state = SSL2_ST_SEND_CLIENT_CERTIFICATE_A; + return (1); + } else if (*p != SSL2_MT_SERVER_FINISHED) { + if (p[0] != SSL2_MT_ERROR) { + ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); + SSLerr(SSL_F_GET_SERVER_FINISHED, + SSL_R_READ_WRONG_PACKET_TYPE); + } else { + SSLerr(SSL_F_GET_SERVER_FINISHED, SSL_R_PEER_ERROR); + /* try to read the error message */ + i = ssl2_read(s, (char *)&(p[s->init_num]), 3 - s->init_num); + return ssl2_part_read(s, SSL_F_GET_SERVER_VERIFY, i); + } + return (-1); + } + s->state = SSL2_ST_GET_SERVER_FINISHED_B; + } + + len = 1 + SSL2_SSL_SESSION_ID_LENGTH; + n = len - s->init_num; + i = ssl2_read(s, (char *)&(buf[s->init_num]), n); + if (i < n) { + /* + * XXX could be shorter than SSL2_SSL_SESSION_ID_LENGTH, + * that's the maximum + */ + return (ssl2_part_read(s, SSL_F_GET_SERVER_FINISHED, i)); + } + s->init_num += i; + if (s->msg_callback) { + /* SERVER-FINISHED */ + s->msg_callback(0, s->version, 0, buf, (size_t)s->init_num, s, + s->msg_callback_arg); + } + + if (!s->hit) { /* new session */ + /* new session-id */ + /* + * Make sure we were not trying to re-use an old SSL_SESSION or bad + * things can happen + */ + /* ZZZZZZZZZZZZZ */ + s->session->session_id_length = SSL2_SSL_SESSION_ID_LENGTH; + memcpy(s->session->session_id, p + 1, SSL2_SSL_SESSION_ID_LENGTH); + } else { + if (!(s->options & SSL_OP_MICROSOFT_SESS_ID_BUG)) { + if ((s->session->session_id_length > + sizeof s->session->session_id) + || (0 != + memcmp(buf + 1, s->session->session_id, + (unsigned int)s->session->session_id_length))) { + ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); + SSLerr(SSL_F_GET_SERVER_FINISHED, + SSL_R_SSL_SESSION_ID_IS_DIFFERENT); + return (-1); + } + } + } + s->state = SSL_ST_OK; + return (1); +} /* loads in the certificate from the server */ int ssl2_set_certificate(SSL *s, int type, int len, const unsigned char *data) - { - STACK_OF(X509) *sk=NULL; - EVP_PKEY *pkey=NULL; - SESS_CERT *sc=NULL; - int i; - X509 *x509=NULL; - int ret=0; - - x509=d2i_X509(NULL,&data,(long)len); - if (x509 == NULL) - { - SSLerr(SSL_F_SSL2_SET_CERTIFICATE,ERR_R_X509_LIB); - goto err; - } - - if ((sk=sk_X509_new_null()) == NULL || !sk_X509_push(sk,x509)) - { - SSLerr(SSL_F_SSL2_SET_CERTIFICATE,ERR_R_MALLOC_FAILURE); - goto err; - } - - i=ssl_verify_cert_chain(s,sk); - - if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)) - { - SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED); - goto err; - } - ERR_clear_error(); /* but we keep s->verify_result */ - s->session->verify_result = s->verify_result; - - /* server's cert for this session */ - sc=ssl_sess_cert_new(); - if (sc == NULL) - { - ret= -1; - goto err; - } - if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert); - s->session->sess_cert=sc; - - sc->peer_pkeys[SSL_PKEY_RSA_ENC].x509=x509; - sc->peer_key= &(sc->peer_pkeys[SSL_PKEY_RSA_ENC]); - - pkey=X509_get_pubkey(x509); - x509=NULL; - if (pkey == NULL) - { - SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_UNABLE_TO_EXTRACT_PUBLIC_KEY); - goto err; - } - if (pkey->type != EVP_PKEY_RSA) - { - SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_PUBLIC_KEY_NOT_RSA); - goto err; - } - - if (!ssl_set_peer_cert_type(sc,SSL2_CT_X509_CERTIFICATE)) - goto err; - ret=1; -err: - sk_X509_free(sk); - X509_free(x509); - EVP_PKEY_free(pkey); - return(ret); - } +{ + STACK_OF(X509) *sk = NULL; + EVP_PKEY *pkey = NULL; + SESS_CERT *sc = NULL; + int i; + X509 *x509 = NULL; + int ret = 0; + + x509 = d2i_X509(NULL, &data, (long)len); + if (x509 == NULL) { + SSLerr(SSL_F_SSL2_SET_CERTIFICATE, ERR_R_X509_LIB); + goto err; + } + + if ((sk = sk_X509_new_null()) == NULL || !sk_X509_push(sk, x509)) { + SSLerr(SSL_F_SSL2_SET_CERTIFICATE, ERR_R_MALLOC_FAILURE); + goto err; + } + + i = ssl_verify_cert_chain(s, sk); + + if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)) { + SSLerr(SSL_F_SSL2_SET_CERTIFICATE, SSL_R_CERTIFICATE_VERIFY_FAILED); + goto err; + } + ERR_clear_error(); /* but we keep s->verify_result */ + s->session->verify_result = s->verify_result; + + /* server's cert for this session */ + sc = ssl_sess_cert_new(); + if (sc == NULL) { + ret = -1; + goto err; + } + if (s->session->sess_cert) + ssl_sess_cert_free(s->session->sess_cert); + s->session->sess_cert = sc; + + sc->peer_pkeys[SSL_PKEY_RSA_ENC].x509 = x509; + sc->peer_key = &(sc->peer_pkeys[SSL_PKEY_RSA_ENC]); + + pkey = X509_get_pubkey(x509); + x509 = NULL; + if (pkey == NULL) { + SSLerr(SSL_F_SSL2_SET_CERTIFICATE, + SSL_R_UNABLE_TO_EXTRACT_PUBLIC_KEY); + goto err; + } + if (pkey->type != EVP_PKEY_RSA) { + SSLerr(SSL_F_SSL2_SET_CERTIFICATE, SSL_R_PUBLIC_KEY_NOT_RSA); + goto err; + } + + if (!ssl_set_peer_cert_type(sc, SSL2_CT_X509_CERTIFICATE)) + goto err; + ret = 1; + err: + sk_X509_free(sk); + X509_free(x509); + EVP_PKEY_free(pkey); + return (ret); +} static int ssl_rsa_public_encrypt(SESS_CERT *sc, int len, unsigned char *from, - unsigned char *to, int padding) - { - EVP_PKEY *pkey=NULL; - int i= -1; - - if ((sc == NULL) || (sc->peer_key->x509 == NULL) || - ((pkey=X509_get_pubkey(sc->peer_key->x509)) == NULL)) - { - SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,SSL_R_NO_PUBLICKEY); - return(-1); - } - if (pkey->type != EVP_PKEY_RSA) - { - SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,SSL_R_PUBLIC_KEY_IS_NOT_RSA); - goto end; - } - - /* we have the public key */ - i=RSA_public_encrypt(len,from,to,pkey->pkey.rsa,padding); - if (i < 0) - SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,ERR_R_RSA_LIB); -end: - EVP_PKEY_free(pkey); - return(i); - } -#else /* !OPENSSL_NO_SSL2 */ + unsigned char *to, int padding) +{ + EVP_PKEY *pkey = NULL; + int i = -1; + + if ((sc == NULL) || (sc->peer_key->x509 == NULL) || + ((pkey = X509_get_pubkey(sc->peer_key->x509)) == NULL)) { + SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT, SSL_R_NO_PUBLICKEY); + return (-1); + } + if (pkey->type != EVP_PKEY_RSA) { + SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT, SSL_R_PUBLIC_KEY_IS_NOT_RSA); + goto end; + } + + /* we have the public key */ + i = RSA_public_encrypt(len, from, to, pkey->pkey.rsa, padding); + if (i < 0) + SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT, ERR_R_RSA_LIB); + end: + EVP_PKEY_free(pkey); + return (i); +} +#else /* !OPENSSL_NO_SSL2 */ # if PEDANTIC -static void *dummy=&dummy; +static void *dummy = &dummy; # endif #endif |