--- /dev/null
+/* 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)
+ 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
+
+ /* 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));
+ }
+
+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));
+ }
+
+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)
+ 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));
+ }
+
+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);
+ }
+
+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);
+ }
+
+/* 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
projects / cassiopeia.git / blobdiff