diff options
Diffstat (limited to 'openssl/ssl/s2_clnt.c')
| -rw-r--r-- | openssl/ssl/s2_clnt.c | 1094 |
1 files changed, 0 insertions, 1094 deletions
diff --git a/openssl/ssl/s2_clnt.c b/openssl/ssl/s2_clnt.c deleted file mode 100644 index 20de1a8..0000000 --- a/openssl/ssl/s2_clnt.c +++ /dev/null @@ -1,1094 +0,0 @@ -/* ssl/s2_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.] - */ -/* ==================================================================== - * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * 3. All advertising materials mentioning features or use of this - * software must display the following acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" - * - * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to - * endorse or promote products derived from this software without - * prior written permission. For written permission, please contact - * openssl-core@openssl.org. - * - * 5. Products derived from this software may not be called "OpenSSL" - * nor may "OpenSSL" appear in their names without prior written - * permission of the OpenSSL Project. - * - * 6. Redistributions of any form whatsoever must retain the following - * acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit (http://www.openssl.org/)" - * - * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY - * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR - * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * ==================================================================== - * - * This product includes cryptographic software written by Eric Young - * (eay@cryptsoft.com). This product includes software written by Tim - * Hudson (tjh@cryptsoft.com). - * - */ - -#include "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> - -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_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 - -static const SSL_METHOD *ssl2_get_client_method(int ver) -{ - 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) - -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); -} - -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) { - /* 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); -} - -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_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_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)); -} - -/* 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) { - /* 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) { - /* 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) { - /* 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); -} - -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 */ - -# if PEDANTIC -static void *dummy = &dummy; -# endif - -#endif |