Import of old SSLeay release: SSLeay 0.8.1b
diff --git a/ssl/s3_clnt.c b/ssl/s3_clnt.c
new file mode 100644
index 0000000..4f551d2
--- /dev/null
+++ b/ssl/s3_clnt.c
@@ -0,0 +1,1642 @@
+/* ssl/s3_clnt.c */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include <stdio.h>
+#include "buffer.h"
+#include "rand.h"
+#include "objects.h"
+#include "evp.h"
+#include "ssl_locl.h"
+
+#define BREAK break
+/* SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,ERR_R_MALLOC_FAILURE);
+ * SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
+ * SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,ERR_R_MALLOC_FAILURE);
+ * SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
+ * SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
+ * SSLerr(SSL_F_SSL3_GET_SERVER_DONE,ERR_R_MALLOC_FAILURE);
+SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_SHORT);
+ */
+
+#ifndef NOPROTO
+static int ssl3_client_hello(SSL *s);
+static int ssl3_get_server_hello(SSL *s);
+static int ssl3_get_certificate_request(SSL *s);
+static int ca_dn_cmp(X509_NAME **a,X509_NAME **b);
+static int ssl3_get_server_done(SSL *s);
+static int ssl3_send_client_verify(SSL *s);
+static int ssl3_send_client_certificate(SSL *s);
+static int ssl3_send_client_key_exchange(SSL *s);
+static int ssl3_get_key_exchange(SSL *s);
+static int ssl3_get_server_certificate(SSL *s);
+static int ssl3_check_cert_and_algorithm(SSL *s);
+#else
+static int ssl3_client_hello();
+static int ssl3_get_server_hello();
+static int ssl3_get_certificate_request();
+static int ca_dn_cmp();
+static int ssl3_get_server_done();
+static int ssl3_send_client_verify();
+static int ssl3_send_client_certificate();
+static int ssl3_send_client_key_exchange();
+static int ssl3_get_key_exchange();
+static int ssl3_get_server_certificate();
+static int ssl3_check_cert_and_algorithm();
+#endif
+
+static SSL_METHOD *ssl3_get_client_method(ver)
+int ver;
+ {
+ if (ver == 3)
+ return(SSLv3_client_method());
+ else
+ return(NULL);
+ }
+
+SSL_METHOD *SSLv3_client_method()
+ {
+ static int init=1;
+ static SSL_METHOD SSLv3_client_data;
+
+ if (init)
+ {
+ init=0;
+ memcpy((char *)&SSLv3_client_data,(char *)sslv3_base_method(),
+ sizeof(SSL_METHOD));
+ SSLv3_client_data.ssl_connect=ssl3_connect;
+ SSLv3_client_data.get_ssl_method=ssl3_get_client_method;
+ }
+ return(&SSLv3_client_data);
+ }
+
+int ssl3_connect(s)
+SSL *s;
+ {
+ BUF_MEM *buf;
+ unsigned long Time=time(NULL),l;
+ long num1;
+ void (*cb)()=NULL;
+ int ret= -1;
+ BIO *bbio,*under;
+ int new_state,state,skip=0;;
+
+ RAND_seed((unsigned char *)&Time,sizeof(Time));
+ ERR_clear_error();
+ errno=0;
+
+ if (s->info_callback != NULL)
+ cb=s->info_callback;
+ else if (s->ctx->info_callback != NULL)
+ cb=s->ctx->info_callback;
+
+ if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
+ s->in_handshake++;
+
+ for (;;)
+ {
+ state=s->state;
+
+ switch(s->state)
+ {
+ case SSL_ST_RENEGOTIATE:
+ s->new_session=1;
+ s->state=SSL_ST_CONNECT;
+ /* break */
+ case SSL_ST_BEFORE:
+ case SSL_ST_CONNECT:
+ case SSL_ST_BEFORE|SSL_ST_CONNECT:
+ case SSL_ST_OK|SSL_ST_CONNECT:
+
+ if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
+
+ s->version=3;
+ s->type=SSL_ST_CONNECT;
+
+ if (s->init_buf == NULL)
+ {
+ if ((buf=BUF_MEM_new()) == NULL)
+ {
+ ret= -1;
+ goto end;
+ }
+ if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
+ {
+ ret= -1;
+ goto end;
+ }
+ s->init_buf=buf;
+ }
+
+ if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
+
+ /* setup buffing BIO */
+ if (s->bbio == NULL)
+ {
+ bbio=BIO_new(BIO_f_buffer());
+ if (bbio == NULL)
+ {
+ SSLerr(SSL_F_SSL3_CONNECT,ERR_LIB_BUF);
+ ret= -1;
+ goto end;
+ }
+ s->bbio=bbio;
+ }
+ else
+ bbio=s->bbio;
+
+ BIO_reset(bbio);
+ if (!BIO_set_write_buffer_size(bbio,16*1024))
+ {
+ SSLerr(SSL_F_SSL3_CONNECT,ERR_LIB_BUF);
+ ret= -1;
+ goto end;
+ }
+
+ /* don't push the buffering BIO quite yet */
+
+ ssl3_init_finished_mac(s);
+
+ s->state=SSL3_ST_CW_CLNT_HELLO_A;
+ s->ctx->sess_connect++;
+ s->init_num=0;
+ break;
+
+ case SSL3_ST_CW_CLNT_HELLO_A:
+ case SSL3_ST_CW_CLNT_HELLO_B:
+
+ s->shutdown=0;
+ ret=ssl3_client_hello(s);
+ if (ret <= 0) goto end;
+ s->state=SSL3_ST_CR_SRVR_HELLO_A;
+ s->init_num=0;
+
+ /* turn on buffering for the next lot of output */
+ s->wbio=BIO_push(s->bbio,s->wbio);
+
+ break;
+
+ case SSL3_ST_CR_SRVR_HELLO_A:
+ case SSL3_ST_CR_SRVR_HELLO_B:
+ ret=ssl3_get_server_hello(s);
+ if (ret <= 0) goto end;
+ if (s->hit)
+ s->state=SSL3_ST_CR_FINISHED_A;
+ else
+ s->state=SSL3_ST_CR_CERT_A;
+ s->init_num=0;
+ break;
+
+ case SSL3_ST_CR_CERT_A:
+ case SSL3_ST_CR_CERT_B:
+ /* Check if it is anon DH */
+ if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL))
+ {
+ ret=ssl3_get_server_certificate(s);
+ if (ret <= 0) goto end;
+ }
+ else
+ skip=1;
+ s->state=SSL3_ST_CR_KEY_EXCH_A;
+ s->init_num=0;
+ break;
+
+ case SSL3_ST_CR_KEY_EXCH_A:
+ case SSL3_ST_CR_KEY_EXCH_B:
+ ret=ssl3_get_key_exchange(s);
+ if (ret <= 0) goto end;
+ s->state=SSL3_ST_CR_CERT_REQ_A;
+ s->init_num=0;
+
+ /* at this point we check that we have the
+ * required stuff from the server */
+ if (!ssl3_check_cert_and_algorithm(s))
+ {
+ ret= -1;
+ goto end;
+ }
+ break;
+
+ case SSL3_ST_CR_CERT_REQ_A:
+ case SSL3_ST_CR_CERT_REQ_B:
+ ret=ssl3_get_certificate_request(s);
+ if (ret <= 0) goto end;
+ s->state=SSL3_ST_CR_SRVR_DONE_A;
+ s->init_num=0;
+ break;
+
+ case SSL3_ST_CR_SRVR_DONE_A:
+ case SSL3_ST_CR_SRVR_DONE_B:
+ ret=ssl3_get_server_done(s);
+ if (ret <= 0) goto end;
+ if (s->s3->tmp.cert_req)
+ s->state=SSL3_ST_CW_CERT_A;
+ else
+ s->state=SSL3_ST_CW_KEY_EXCH_A;
+ s->init_num=0;
+
+ break;
+
+ case SSL3_ST_CW_CERT_A:
+ case SSL3_ST_CW_CERT_B:
+ case SSL3_ST_CW_CERT_C:
+ ret=ssl3_send_client_certificate(s);
+ if (ret <= 0) goto end;
+ s->state=SSL3_ST_CW_KEY_EXCH_A;
+ s->init_num=0;
+ break;
+
+ case SSL3_ST_CW_KEY_EXCH_A:
+ case SSL3_ST_CW_KEY_EXCH_B:
+ ret=ssl3_send_client_key_exchange(s);
+ if (ret <= 0) goto end;
+ l=s->s3->tmp.new_cipher->algorithms;
+ /* EAY EAY EAY need to check for DH fix cert
+ * sent back */
+ if ((s->s3->tmp.cert_req) && 1)
+ {
+ s->state=SSL3_ST_CW_CERT_VRFY_A;
+ }
+ else
+ {
+ s->state=SSL3_ST_CW_CHANGE_A;
+ s->s3->change_cipher_spec=0;
+ }
+
+ s->init_num=0;
+ break;
+
+ case SSL3_ST_CW_CERT_VRFY_A:
+ case SSL3_ST_CW_CERT_VRFY_B:
+ ret=ssl3_send_client_verify(s);
+ if (ret <= 0) goto end;
+ s->state=SSL3_ST_CW_CHANGE_A;
+ s->init_num=0;
+ s->s3->change_cipher_spec=0;
+ break;
+
+ case SSL3_ST_CW_CHANGE_A:
+ case SSL3_ST_CW_CHANGE_B:
+ ret=ssl3_send_change_cipher_spec(s,
+ SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
+ if (ret <= 0) goto end;
+ s->state=SSL3_ST_CW_FINISHED_A;
+ s->init_num=0;
+
+ s->session->cipher=s->s3->tmp.new_cipher;
+ if (!ssl3_setup_key_block(s))
+ {
+ ret= -1;
+ goto end;
+ }
+
+ if (!ssl3_change_cipher_state(s,
+ SSL3_CHANGE_CIPHER_CLIENT_WRITE))
+ {
+ ret= -1;
+ goto end;
+ }
+
+ break;
+
+ case SSL3_ST_CW_FINISHED_A:
+ case SSL3_ST_CW_FINISHED_B:
+ ret=ssl3_send_finished(s,
+ SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
+ &(ssl3_client_finished_const[0]));
+ if (ret <= 0) goto end;
+ s->state=SSL3_ST_CW_FLUSH;
+
+ /* clear flags */
+ s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
+ if (s->hit)
+ {
+ s->s3->tmp.next_state=SSL_ST_OK;
+ if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
+ {
+ s->state=SSL_ST_OK;
+ s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
+ s->s3->delay_buf_pop_ret=0;
+ }
+ }
+ else
+ {
+ s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
+ }
+ s->init_num=0;
+ break;
+
+ case SSL3_ST_CR_FINISHED_A:
+ case SSL3_ST_CR_FINISHED_B:
+
+ ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
+ SSL3_ST_CR_FINISHED_B,
+ &(ssl3_server_finished_const[0]));
+ if (ret <= 0) goto end;
+
+ if (s->hit)
+ s->state=SSL3_ST_CW_CHANGE_A;
+ else
+ s->state=SSL_ST_OK;
+ s->init_num=0;
+ break;
+
+ case SSL3_ST_CW_FLUSH:
+ /* number of bytes to be flushed */
+ num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
+ if (num1 > 0)
+ {
+ s->rwstate=SSL_WRITING;
+ num1=BIO_flush(s->wbio);
+ if (num1 <= 0) { ret= -1; goto end; }
+ s->rwstate=SSL_NOTHING;
+ }
+
+ s->state=s->s3->tmp.next_state;
+ break;
+
+ case SSL_ST_OK:
+ /* clean a few things up */
+ ssl3_cleanup_key_block(s);
+
+ BUF_MEM_free(s->init_buf);
+ s->init_buf=NULL;
+
+ if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
+ {
+ /* remove buffering */
+ under=BIO_pop(s->wbio);
+ if (under != NULL)
+ s->wbio=under;
+ else
+ abort(); /* ok */
+
+ BIO_free(s->bbio);
+ s->bbio=NULL;
+ }
+ /* else do it later */
+
+ s->init_num=0;
+ s->new_session=0;
+
+ ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
+
+ ret=1;
+ /* s->server=0; */
+ s->handshake_func=ssl3_connect;
+ s->ctx->sess_connect_good++;
+
+ if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
+
+ goto end;
+ break;
+
+ default:
+ SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
+ ret= -1;
+ goto end;
+ /* break; */
+ }
+
+ /* did we do anything */
+ if (!s->s3->tmp.reuse_message && !skip)
+ {
+ if (s->debug) BIO_flush(s->wbio);
+
+ if ((cb != NULL) && (s->state != state))
+ {
+ new_state=s->state;
+ s->state=state;
+ cb(s,SSL_CB_CONNECT_LOOP,1);
+ s->state=new_state;
+ }
+ }
+ skip=0;
+ }
+end:
+ if (cb != NULL)
+ cb(s,SSL_CB_CONNECT_EXIT,ret);
+ s->in_handshake--;
+ return(ret);
+ }
+
+
+static int ssl3_client_hello(s)
+SSL *s;
+ {
+ unsigned char *buf;
+ unsigned char *p,*d;
+ int i;
+ unsigned long Time,l;
+
+ buf=(unsigned char *)s->init_buf->data;
+ if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
+ {
+ if ((s->session == NULL) ||
+ (s->session->ssl_version != s->version))
+ {
+ if (!ssl_get_new_session(s,0))
+ goto err;
+ }
+ /* else use the pre-loaded session */
+
+ p=s->s3->client_random;
+ Time=time(NULL); /* Time */
+ l2n(Time,p);
+ RAND_bytes(&(p[4]),SSL3_RANDOM_SIZE-sizeof(Time));
+
+ /* Do the message type and length last */
+ d=p= &(buf[4]);
+
+ *(p++)=SSL3_VERSION_MAJOR;
+ *(p++)=SSL3_VERSION_MINOR;
+
+ /* Random stuff */
+ memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
+ p+=SSL3_RANDOM_SIZE;
+
+ /* Session ID */
+ if (s->new_session)
+ i=0;
+ else
+ i=s->session->session_id_length;
+ *(p++)=i;
+ if (i != 0)
+ {
+ memcpy(p,s->session->session_id,i);
+ p+=i;
+ }
+
+ /* Ciphers supported */
+ i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]));
+ if (i == 0)
+ {
+ SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
+ goto err;
+ }
+ s2n(i,p);
+ p+=i;
+
+ /* hardwire in the NULL compression algorithm. */
+ *(p++)=1;
+ *(p++)=0;
+
+ l=(p-d);
+ d=buf;
+ *(d++)=SSL3_MT_CLIENT_HELLO;
+ l2n3(l,d);
+
+ s->state=SSL3_ST_CW_CLNT_HELLO_B;
+ /* number of bytes to write */
+ s->init_num=p-buf;
+ s->init_off=0;
+ }
+
+ /* SSL3_ST_CW_CLNT_HELLO_B */
+ return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
+err:
+ return(-1);
+ }
+
+static int ssl3_get_server_hello(s)
+SSL *s;
+ {
+ STACK *sk;
+ SSL_CIPHER *c;
+ unsigned char *p,*d;
+ int i,al,ok;
+ unsigned int j;
+ long n;
+
+ n=ssl3_get_message(s,
+ SSL3_ST_CR_SRVR_HELLO_A,
+ SSL3_ST_CR_SRVR_HELLO_B,
+ SSL3_MT_SERVER_HELLO,
+ 300, /* ?? */
+ &ok);
+
+ if (!ok) return((int)n);
+ d=p=(unsigned char *)s->init_buf->data;
+
+ if ((p[0] != SSL3_VERSION_MAJOR) && (p[1] != SSL3_VERSION_MINOR))
+ {
+ SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
+ goto err;
+ }
+ p+=2;
+
+ /* load the server hello data */
+ /* load the server random */
+ memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
+ p+=SSL3_RANDOM_SIZE;
+
+ /* get the session-id */
+ j= *(p++);
+
+ if ((j != 0) && (j != SSL3_SESSION_ID_SIZE))
+ {
+ /* SSLref returns 16 :-( */
+ if (j < SSL2_SSL_SESSION_ID_LENGTH)
+ {
+ al=SSL3_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_SHORT);
+ goto f_err;
+ }
+ }
+ if (j == 0)
+ {
+ s->hit=0;
+ memset(s->session->session_id,0,SSL_MAX_SSL_SESSION_ID_LENGTH);
+ s->session->session_id_length=0;
+ }
+ else if ((j == s->session->session_id_length) &&
+ (memcmp(p,s->session->session_id,j) == 0))
+ s->hit=1;
+ else
+ {
+ memcpy(s->session->session_id,p,j);
+ s->session->session_id_length=j;
+ s->hit=0;
+ }
+ p+=j;
+ c=ssl_get_cipher_by_char(s,p);
+ if (c == NULL)
+ {
+ /* unknown cipher */
+ al=SSL3_AD_HANDSHAKE_FAILURE;
+ SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
+ goto f_err;
+ }
+ p+=ssl_put_cipher_by_char(s,NULL,NULL);
+
+ sk=ssl_get_ciphers_by_id(s);
+ i=sk_find(sk,(char *)c);
+ if (i < 0)
+ {
+ /* we did not say we would use this cipher */
+ al=SSL3_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
+ goto f_err;
+ }
+
+ if (s->hit && (s->session->cipher != c))
+ {
+ if (!(s->ctx->options &
+ SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
+ {
+ al=SSL3_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
+ goto f_err;
+ }
+ }
+ s->s3->tmp.new_cipher=c;
+
+ /* lets get the compression algorithm */
+ j= *(p++);
+ if (j != 0)
+ {
+ al=SSL3_AD_HANDSHAKE_FAILURE;
+ SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
+ goto f_err;
+ }
+
+ if (p != (d+n))
+ {
+ /* wrong packet length */
+ al=SSL3_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
+ goto err;
+ }
+
+ return(1);
+f_err:
+ ssl3_send_alert(s,SSL3_AL_FATAL,al);
+err:
+ return(-1);
+ }
+
+static int ssl3_get_server_certificate(s)
+SSL *s;
+ {
+ int al,i,ok,ret= -1;
+ unsigned long n,nc,llen,l;
+ X509 *x=NULL;
+ unsigned char *p,*d,*q;
+ STACK *sk=NULL;
+ CERT *c;
+ EVP_PKEY *pkey=NULL;
+
+ n=ssl3_get_message(s,
+ SSL3_ST_CR_CERT_A,
+ SSL3_ST_CR_CERT_B,
+ -1,
+#if defined(MSDOS) && !defined(WIN32)
+ 1024*30, /* 30k max cert list :-) */
+#else
+ 1024*100, /* 100k max cert list :-) */
+#endif
+ &ok);
+
+ if (!ok) return((int)n);
+
+ if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
+ {
+ s->s3->tmp.reuse_message=1;
+ return(1);
+ }
+
+ if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
+ {
+ al=SSL3_AD_UNEXPECTED_MESSAGE;
+ SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
+ goto f_err;
+ }
+ d=p=(unsigned char *)s->init_buf->data;
+
+ if ((sk=sk_new_null()) == NULL)
+ {
+ SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ n2l3(p,llen);
+ if (llen+3 != n)
+ {
+ al=SSL3_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
+ goto f_err;
+ }
+ for (nc=0; nc<llen; )
+ {
+ n2l3(p,l);
+ if ((l+nc+3) > llen)
+ {
+ al=SSL3_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
+ goto f_err;
+ }
+
+ q=p;
+ x=d2i_X509(NULL,&q,l);
+ if (x == NULL)
+ {
+ al=SSL3_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
+ goto f_err;
+ }
+ if (q != (p+l))
+ {
+ al=SSL3_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
+ goto f_err;
+ }
+ if (!sk_push(sk,(char *)x))
+ {
+ SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ x=NULL;
+ nc+=l+3;
+ p=q;
+ }
+
+ i=ssl_verify_cert_chain(s,sk);
+ if ((s->verify_mode != SSL_VERIFY_NONE) && (!i))
+ {
+ al=ssl_verify_alarm_type(s->verify_result);
+ SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
+ goto f_err;
+ }
+
+ c=ssl_cert_new();
+ if (c == NULL) goto err;
+
+ if (s->session->cert) ssl_cert_free(s->session->cert);
+ s->session->cert=c;
+
+ c->cert_chain=sk;
+ x=(X509 *)sk_value(sk,0);
+ sk=NULL;
+
+ pkey=X509_get_pubkey(x);
+
+ if (EVP_PKEY_missing_parameters(pkey))
+ {
+ x=NULL;
+ al=SSL3_AL_FATAL;
+ SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
+ goto f_err;
+ }
+
+ i=ssl_cert_type(x,pkey);
+ if (i < 0)
+ {
+ x=NULL;
+ al=SSL3_AL_FATAL;
+ SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_UNKNOWN_CERTIFICATE_TYPE);
+ goto f_err;
+ }
+
+ c->cert_type=i;
+ x->references++;
+ if (c->pkeys[i].x509 != NULL)
+ X509_free(c->pkeys[i].x509);
+ c->pkeys[i].x509=x;
+ c->key= &(c->pkeys[i]);
+
+ if ((s->session != NULL) && (s->session->peer != NULL))
+ X509_free(s->session->peer);
+ x->references++;
+ s->session->peer=x;
+
+ x=NULL;
+ ret=1;
+
+ if (0)
+ {
+f_err:
+ ssl3_send_alert(s,SSL3_AL_FATAL,al);
+ }
+err:
+ if (x != NULL) X509_free(x);
+ if (sk != NULL) sk_pop_free(sk,X509_free);
+ return(ret);
+ }
+
+static int ssl3_get_key_exchange(s)
+SSL *s;
+ {
+#ifndef NO_RSA
+ unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
+#endif
+ EVP_MD_CTX md_ctx;
+ unsigned char *param,*p;
+ int al,i,j,param_len,ok;
+ long n,alg;
+ EVP_PKEY *pkey=NULL;
+ RSA *rsa=NULL;
+ DH *dh=NULL;
+
+ n=ssl3_get_message(s,
+ SSL3_ST_CR_KEY_EXCH_A,
+ SSL3_ST_CR_KEY_EXCH_B,
+ -1,
+ 1024*8, /* ?? */
+ &ok);
+
+ if (!ok) return((int)n);
+
+ if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
+ {
+ s->s3->tmp.reuse_message=1;
+ return(1);
+ }
+
+ param=p=(unsigned char *)s->init_buf->data;
+
+ if (s->session->cert != NULL)
+ {
+#ifndef NO_RSA
+ if (s->session->cert->rsa_tmp != NULL)
+ {
+ RSA_free(s->session->cert->rsa_tmp);
+ s->session->cert->rsa_tmp=NULL;
+ }
+#endif
+#ifndef NO_DH
+ if (s->session->cert->dh_tmp)
+ {
+ DH_free(s->session->cert->dh_tmp);
+ s->session->cert->dh_tmp=NULL;
+ }
+#endif
+ }
+ else
+ {
+ s->session->cert=ssl_cert_new();
+ }
+
+ param_len=0;
+ alg=s->s3->tmp.new_cipher->algorithms;
+
+#ifndef NO_RSA
+ if (alg & SSL_kRSA)
+ {
+ if ((rsa=RSA_new()) == NULL)
+ {
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ n2s(p,i);
+ param_len=i+2;
+ if (param_len > n)
+ {
+ al=SSL3_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
+ goto f_err;
+ }
+ if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
+ {
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
+ goto err;
+ }
+ p+=i;
+
+ n2s(p,i);
+ param_len+=i+2;
+ if (param_len > n)
+ {
+ al=SSL3_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
+ goto f_err;
+ }
+ if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
+ {
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
+ goto err;
+ }
+ p+=i;
+ n-=param_len;
+
+/* s->session->cert->rsa_tmp=rsa;*/
+ /* this should be because we are using an export cipher */
+ if (alg & SSL_aRSA)
+ pkey=X509_get_pubkey(s->session->cert->pkeys[SSL_PKEY_RSA_ENC].x509);
+ else
+ {
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_INTERNAL_ERROR);
+ goto err;
+ }
+ s->session->cert->rsa_tmp=rsa;
+ }
+ else
+#endif
+#ifndef NO_DH
+ if (alg & SSL_kEDH)
+ {
+ if ((dh=DH_new()) == NULL)
+ {
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
+ goto err;
+ }
+ n2s(p,i);
+ param_len=i+2;
+ if (param_len > n)
+ {
+ al=SSL3_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
+ goto f_err;
+ }
+ if (!(dh->p=BN_bin2bn(p,i,NULL)))
+ {
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
+ goto err;
+ }
+ p+=i;
+
+ n2s(p,i);
+ param_len+=i+2;
+ if (param_len > n)
+ {
+ al=SSL3_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
+ goto f_err;
+ }
+ if (!(dh->g=BN_bin2bn(p,i,NULL)))
+ {
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
+ goto err;
+ }
+ p+=i;
+
+ n2s(p,i);
+ param_len+=i+2;
+ if (param_len > n)
+ {
+ al=SSL3_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
+ goto f_err;
+ }
+ if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
+ {
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
+ goto err;
+ }
+ p+=i;
+ n-=param_len;
+
+#ifndef NO_RSA
+ if (alg & SSL_aRSA)
+ pkey=X509_get_pubkey(s->session->cert->pkeys[SSL_PKEY_RSA_ENC].x509);
+ else
+#endif
+#ifndef NO_DSA
+ if (alg & SSL_aDSS)
+ pkey=X509_get_pubkey(s->session->cert->pkeys[SSL_PKEY_DSA_SIGN].x509);
+#endif
+ /* else anonymous DH, so no certificate or pkey. */
+
+ s->session->cert->dh_tmp=dh;
+ }
+ else if ((alg & SSL_kDHr) || (alg & SSL_kDHd))
+ {
+ al=SSL3_AD_HANDSHAKE_FAILURE;
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
+ goto f_err;
+ }
+#endif
+
+ /* p points to the next byte, there are 'n' bytes left */
+
+
+ /* if it was signed, check the signature */
+ if (pkey != NULL)
+ {
+ n2s(p,i);
+ n-=2;
+ j=EVP_PKEY_size(pkey);
+
+ if ((i != n) || (n > j) || (n <= 0))
+ {
+ /* wrong packet length */
+ al=SSL3_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
+ goto err;
+ }
+
+#ifndef NO_RSA
+ if (pkey->type == EVP_PKEY_RSA)
+ {
+ int num;
+
+ j=0;
+ q=md_buf;
+ for (num=2; num > 0; num--)
+ {
+ EVP_DigestInit(&md_ctx,(num == 2)?EVP_md5():EVP_sha1());
+ EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
+ EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
+ EVP_DigestUpdate(&md_ctx,param,param_len);
+ EVP_DigestFinal(&md_ctx,q,(unsigned int *)&i);
+ q+=i;
+ j+=i;
+ }
+ i=RSA_public_decrypt((int)n,p,p,pkey->pkey.rsa,
+ RSA_PKCS1_PADDING);
+ if (i <= 0)
+ {
+ al=SSL3_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
+ goto f_err;
+ }
+ if ((j != i) || (memcmp(p,md_buf,i) != 0))
+ {
+ /* bad signature */
+ al=SSL3_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
+ goto f_err;
+ }
+ }
+ else
+#endif
+#ifndef NO_DSA
+ if (pkey->type == EVP_PKEY_DSA)
+ {
+ /* lets do DSS */
+ EVP_VerifyInit(&md_ctx,EVP_dss1());
+ EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
+ EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
+ EVP_VerifyUpdate(&md_ctx,param,param_len);
+ if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
+ {
+ /* bad signature */
+ al=SSL3_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
+ goto f_err;
+ }
+ }
+ else
+#endif
+ {
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_INTERNAL_ERROR);
+ goto err;
+ }
+ }
+ else
+ {
+ /* still data left over */
+ if (!(alg & SSL_aNULL))
+ {
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_INTERNAL_ERROR);
+ goto err;
+ }
+ if (n != 0)
+ {
+ al=SSL3_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
+ goto f_err;
+ }
+ }
+
+ return(1);
+f_err:
+ ssl3_send_alert(s,SSL3_AL_FATAL,al);
+err:
+ return(-1);
+ }
+
+static int ssl3_get_certificate_request(s)
+SSL *s;
+ {
+ int ok,ret=0;
+ unsigned long n,nc;
+ unsigned int llen,l,ctype_num,i;
+ X509_NAME *xn=NULL;
+ unsigned char *p,*d,*q;
+ STACK *ca_sk=NULL;
+
+ n=ssl3_get_message(s,
+ SSL3_ST_CR_CERT_REQ_A,
+ SSL3_ST_CR_CERT_REQ_B,
+ -1,
+#if defined(MSDOS) && !defined(WIN32)
+ 1024*30, /* 30k max cert list :-) */
+#else
+ 1024*100, /* 100k max cert list :-) */
+#endif
+ &ok);
+
+ if (!ok) return((int)n);
+
+ s->s3->tmp.cert_req=0;
+
+ if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
+ {
+ s->s3->tmp.reuse_message=1;
+ return(1);
+ }
+
+ if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
+ {
+ ssl3_send_alert(s,SSL3_AL_FATAL,SSL3_AD_UNEXPECTED_MESSAGE);
+ SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
+ goto err;
+ }
+
+ d=p=(unsigned char *)s->init_buf->data;
+
+ if ((ca_sk=sk_new(ca_dn_cmp)) == NULL)
+ {
+ SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ /* get the certificate types */
+ ctype_num= *(p++);
+ if (ctype_num > SSL3_CT_NUMBER)
+ ctype_num=SSL3_CT_NUMBER;
+ for (i=0; i<ctype_num; i++)
+ s->s3->tmp.ctype[i]= p[i];
+ p+=ctype_num;
+
+ /* get the CA RDNs */
+ n2s(p,llen);
+ if ((llen+ctype_num+2+1) != n)
+ {
+ ssl3_send_alert(s,SSL3_AL_FATAL,SSL3_AD_ILLEGAL_PARAMETER);
+ SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
+ goto err;
+ }
+
+ for (nc=0; nc<llen; )
+ {
+ n2s(p,l);
+ if ((l+nc+2) > llen)
+ {
+ if ((s->ctx->options & SSL_OP_NETSCAPE_CA_DN_BUG))
+ goto cont; /* netscape bugs */
+ ssl3_send_alert(s,SSL3_AL_FATAL,SSL3_AD_ILLEGAL_PARAMETER);
+ SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
+ goto err;
+ }
+
+ q=p;
+
+ if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
+ {
+ /* If netscape tollerance is on, ignore errors */
+ if (s->ctx->options & SSL_OP_NETSCAPE_CA_DN_BUG)
+ goto cont;
+ else
+ {
+ ssl3_send_alert(s,SSL3_AL_FATAL,SSL3_AD_ILLEGAL_PARAMETER);
+ SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
+ goto err;
+ }
+ }
+
+ if (q != (p+l))
+ {
+ ssl3_send_alert(s,SSL3_AL_FATAL,SSL3_AD_ILLEGAL_PARAMETER);
+ SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
+ goto err;
+ }
+ if (!sk_push(ca_sk,(char *)xn))
+ {
+ SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ p+=l;
+ nc+=l+2;
+ }
+
+ if (0)
+ {
+cont:
+ ERR_clear_error();
+ }
+
+ /* we should setup a certficate to return.... */
+ s->s3->tmp.cert_req=1;
+ s->s3->tmp.ctype_num=ctype_num;
+ if (s->s3->tmp.ca_names != NULL)
+ sk_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
+ s->s3->tmp.ca_names=ca_sk;
+ ca_sk=NULL;
+
+ ret=1;
+err:
+ if (ca_sk != NULL) sk_pop_free(ca_sk,X509_NAME_free);
+ return(ret);
+ }
+
+static int ca_dn_cmp(a,b)
+X509_NAME **a,**b;
+ {
+ return(X509_NAME_cmp(*a,*b));
+ }
+
+static int ssl3_get_server_done(s)
+SSL *s;
+ {
+ int ok,ret=0;
+ long n;
+
+ n=ssl3_get_message(s,
+ SSL3_ST_CR_SRVR_DONE_A,
+ SSL3_ST_CR_SRVR_DONE_B,
+ SSL3_MT_SERVER_DONE,
+ 30, /* should be very small, like 0 :-) */
+ &ok);
+
+ if (!ok) return((int)n);
+ if (n > 0)
+ {
+ /* should contain no data */
+ ssl3_send_alert(s,SSL3_AL_FATAL,SSL3_AD_ILLEGAL_PARAMETER);
+ SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
+ }
+ ret=1;
+ return(ret);
+ }
+
+static int ssl3_send_client_key_exchange(s)
+SSL *s;
+ {
+ unsigned char *p,*d;
+ int n;
+ unsigned long l;
+ EVP_PKEY *pkey=NULL;
+
+ if (s->state == SSL3_ST_CW_KEY_EXCH_A)
+ {
+ d=(unsigned char *)s->init_buf->data;
+ p= &(d[4]);
+
+ l=s->s3->tmp.new_cipher->algorithms;
+
+#ifndef NO_RSA
+ if (l & SSL_kRSA)
+ {
+ RSA *rsa;
+ unsigned char tmp_buf[48];
+
+ if (s->session->cert->rsa_tmp != NULL)
+ rsa=s->session->cert->rsa_tmp;
+ else
+ {
+ pkey=X509_get_pubkey(s->session->cert->pkeys[SSL_PKEY_RSA_ENC].x509);
+ if ((pkey == NULL) ||
+ (pkey->type != EVP_PKEY_RSA) ||
+ (pkey->pkey.rsa == NULL))
+ {
+ SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_INTERNAL_ERROR);
+ goto err;
+ }
+ rsa=pkey->pkey.rsa;
+ }
+
+ tmp_buf[0]=SSL3_VERSION_MAJOR;
+ tmp_buf[1]=SSL3_VERSION_MINOR;
+ RAND_bytes(&(tmp_buf[2]),SSL_MAX_MASTER_KEY_LENGTH-2);
+
+ s->session->master_key_length=SSL_MAX_MASTER_KEY_LENGTH;
+
+ n=RSA_public_encrypt(48,tmp_buf,p,rsa,
+ RSA_PKCS1_PADDING);
+ if (n <= 0)
+ {
+ SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
+ goto err;
+ }
+
+ s->session->master_key_length=
+ ssl3_generate_master_secret(s,
+ s->session->master_key,
+ tmp_buf,48);
+ memset(tmp_buf,0,48);
+ }
+ else
+#endif
+#ifndef NO_DH
+ if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
+ {
+ DH *dh_srvr,*dh_clnt;
+
+ if (s->session->cert->dh_tmp != NULL)
+ dh_srvr=s->session->cert->dh_tmp;
+ else
+ {
+ /* we get them from the cert */
+ ssl3_send_alert(s,SSL3_AL_FATAL,SSL3_AD_HANDSHAKE_FAILURE);
+ SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
+ goto err;
+ }
+
+ /* generate a new random key */
+ if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
+ {
+ SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
+ goto err;
+ }
+ if (!DH_generate_key(dh_clnt))
+ {
+ SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
+ goto err;
+ }
+
+ /* use the 'p' output buffer for the DH key, but
+ * make sure to clear it out afterwards */
+ n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
+ if (n <= 0)
+ {
+ SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
+ goto err;
+ }
+
+ /* generate master key from the result */
+ s->session->master_key_length=
+ ssl3_generate_master_secret(s,
+ s->session->master_key,p,n);
+ /* clean up */
+ memset(p,0,n);
+
+ /* send off the data */
+ n=BN_num_bytes(dh_clnt->pub_key);
+ s2n(n,p);
+ BN_bn2bin(dh_clnt->pub_key,p);
+ n+=2;
+
+ DH_free(dh_clnt);
+
+ /* perhaps clean things up a bit EAY EAY EAY EAY*/
+ }
+ else
+#endif
+ {
+ ssl3_send_alert(s,SSL3_AL_FATAL,SSL3_AD_HANDSHAKE_FAILURE);
+ SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_INTERNAL_ERROR);
+ goto err;
+ }
+
+ *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
+ l2n3(n,d);
+
+ s->state=SSL3_ST_CW_KEY_EXCH_B;
+ /* number of bytes to write */
+ s->init_num=n+4;
+ s->init_off=0;
+ }
+
+ /* SSL3_ST_CW_KEY_EXCH_B */
+ return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
+err:
+ return(-1);
+ }
+
+static int ssl3_send_client_verify(s)
+SSL *s;
+ {
+ unsigned char *p,*d;
+ unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
+ EVP_PKEY *pkey;
+ int i=0,j;
+ unsigned long n;
+
+ if (s->state == SSL3_ST_CW_CERT_VRFY_A)
+ {
+ d=(unsigned char *)s->init_buf->data;
+ p= &(d[4]);
+ pkey=s->cert->key->privatekey;
+
+ ssl3_final_finish_mac(s,&(s->s3->finish_dgst2),
+ NULL,&(data[MD5_DIGEST_LENGTH]));
+
+#ifndef NO_RSA
+ if (pkey->type == EVP_PKEY_RSA)
+ {
+ ssl3_final_finish_mac(s,&(s->s3->finish_dgst1),
+ NULL,&(data[0]));
+ i=RSA_private_encrypt(
+ MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
+ data,&(p[2]),pkey->pkey.rsa,
+ RSA_PKCS1_PADDING);
+ if (i <= 0)
+ {
+ SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
+ goto err;
+ }
+ s2n(i,p);
+ n=i+2;
+ }
+ else
+#endif
+#ifndef NO_DSA
+ if (pkey->type == EVP_PKEY_DSA)
+ {
+ if (!DSA_sign(pkey->save_type,
+ &(data[MD5_DIGEST_LENGTH]),
+ SHA_DIGEST_LENGTH,&(p[2]),
+ (unsigned int *)&j,pkey->pkey.dsa))
+ {
+ SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
+ goto err;
+ }
+ s2n(j,p);
+ n=j+2;
+ }
+ else
+#endif
+ {
+ SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,SSL_R_INTERNAL_ERROR);
+ goto err;
+ }
+ *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
+ l2n3(n,d);
+
+ s->init_num=(int)n+4;
+ s->init_off=0;
+ }
+ return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
+err:
+ return(-1);
+ }
+
+static int ssl3_send_client_certificate(s)
+SSL *s;
+ {
+ X509 *x509=NULL;
+ EVP_PKEY *pkey=NULL;
+ int i;
+ unsigned long l;
+
+ if (s->state == SSL3_ST_CW_CERT_A)
+ {
+ if ((s->cert == NULL) ||
+ (s->cert->key->x509 == NULL) ||
+ (s->cert->key->privatekey == NULL))
+ s->state=SSL3_ST_CW_CERT_B;
+ else
+ s->state=SSL3_ST_CW_CERT_C;
+ }
+
+ /* We need to get a client cert */
+ if (s->state == SSL3_ST_CW_CERT_B)
+ {
+ /* If we get an error, we need to
+ * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
+ * We then get retied later */
+ i=0;
+ if (s->ctx->client_cert_cb != NULL)
+ i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
+ if (i < 0)
+ {
+ s->rwstate=SSL_X509_LOOKUP;
+ return(-1);
+ }
+ s->rwstate=SSL_NOTHING;
+ if ((i == 1) && (pkey != NULL) && (x509 != NULL))
+ {
+ s->state=SSL3_ST_CW_CERT_B;
+ if ( !SSL_use_certificate(s,x509) ||
+ !SSL_use_PrivateKey(s,pkey))
+ i=0;
+ }
+ else if (i == 1)
+ {
+ i=0;
+ SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
+ }
+
+ if (x509 != NULL) X509_free(x509);
+ if (pkey != NULL) EVP_PKEY_free(pkey);
+ if (i == 0)
+ {
+ s->s3->tmp.cert_req=0;
+ ssl3_send_alert(s,SSL3_AL_WARNING,SSL3_AD_NO_CERTIFICATE);
+ return(1);
+ }
+
+ /* Ok, we have a cert */
+ s->state=SSL3_ST_CW_CERT_C;
+ }
+
+ if (s->state == SSL3_ST_CW_CERT_C)
+ {
+ s->state=SSL3_ST_CW_CERT_D;
+ l=ssl3_output_cert_chain(s,s->cert->key->x509);
+ s->init_num=(int)l;
+ s->init_off=0;
+ }
+ /* SSL3_ST_CW_CERT_D */
+ return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
+ }
+
+#define has_bits(i,m) (((i)&(m)) == (m))
+
+static int ssl3_check_cert_and_algorithm(s)
+SSL *s;
+ {
+ int i,idx;
+ long algs;
+ EVP_PKEY *pkey=NULL;
+ CERT *c;
+ RSA *rsa;
+ DH *dh;
+
+ c=s->session->cert;
+
+ if (c == NULL)
+ {
+ SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_INTERNAL_ERROR);
+ goto err;
+ }
+
+ algs=s->s3->tmp.new_cipher->algorithms;
+
+ /* we don't have a certificate */
+ if (algs & (SSL_aDH|SSL_aNULL))
+ return(1);
+
+ rsa=s->session->cert->rsa_tmp;
+ dh=s->session->cert->dh_tmp;
+
+ /* This is the passed certificate */
+
+ idx=c->cert_type;
+ pkey=X509_get_pubkey(c->pkeys[idx].x509);
+ i=X509_certificate_type(c->pkeys[idx].x509,pkey);
+
+
+ /* Check that we have a certificate if we require one */
+ if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
+ {
+ SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
+ goto f_err;
+ }
+#ifndef NO_DSA
+ else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
+ {
+ SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
+ goto f_err;
+ }
+#endif
+
+ if ((algs & SSL_kRSA) &&
+ !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
+ {
+ SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
+ goto f_err;
+ }
+#ifndef NO_DH
+ else if ((algs & SSL_kEDH) &&
+ !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
+ {
+ SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
+ goto f_err;
+ }
+ else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
+ {
+ SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
+ goto f_err;
+ }
+#ifndef NO_DSA
+ else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
+ {
+ SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
+ goto f_err;
+ }
+#endif
+#endif
+
+ if ((algs & SSL_EXP) && !has_bits(i,EVP_PKT_EXP))
+ {
+#ifndef NO_RSA
+ if (algs & SSL_kRSA)
+ {
+ if ((rsa == NULL) || (RSA_size(rsa) > 512))
+ {
+ SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
+ goto f_err;
+ }
+ }
+ else
+#endif
+#ifndef NO_DH
+ if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
+ {
+ if ((dh == NULL) || (DH_size(dh) > 512))
+ {
+ SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
+ goto f_err;
+ }
+ }
+ else
+#endif
+ {
+ SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
+ goto f_err;
+ }
+ }
+ return(1);
+f_err:
+ ssl3_send_alert(s,SSL3_AL_FATAL,SSL3_AD_HANDSHAKE_FAILURE);
+err:
+ return(0);
+ }
+
