/* ssl/s3_both.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) 1998-2002 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).
*
*/
/* ====================================================================
* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
* ECC cipher suite support in OpenSSL originally developed by
* SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
*/
#include <limits.h>
#include <string.h>
#include <stdio.h>
#include "ssl_locl.h"
#include <openssl/buffer.h>
#include <openssl/rand.h>
#include <openssl/objects.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
/*
* send s->init_buf in records of type 'type' (SSL3_RT_HANDSHAKE or
* SSL3_RT_CHANGE_CIPHER_SPEC)
*/
int ssl3_do_write(SSL *s, int type)
{
int ret;
ret = ssl3_write_bytes(s, type, &s->init_buf->data[s->init_off],
s->init_num);
if (ret < 0)
return (-1);
if (type == SSL3_RT_HANDSHAKE)
/*
* should not be done for 'Hello Request's, but in that case we'll
* ignore the result anyway
*/
ssl3_finish_mac(s, (unsigned char *)&s->init_buf->data[s->init_off],
ret);
if (ret == s->init_num) {
if (s->msg_callback)
s->msg_callback(1, s->version, type, s->init_buf->data,
(size_t)(s->init_off + s->init_num), s,
s->msg_callback_arg);
return (1);
}
s->init_off += ret;
s->init_num -= ret;
return (0);
}
int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen)
{
if (s->state == a) {
if (tls_construct_finished(s, sender, slen) == 0) {
statem_set_error(s);
return -1;
}
s->state = b;
}
/* SSL3_ST_SEND_xxxxxx_HELLO_B */
return ssl_do_write(s);
}
int tls_construct_finished(SSL *s, const char *sender, int slen)
{
unsigned char *p;
int i;
unsigned long l;
p = ssl_handshake_start(s);
i = s->method->ssl3_enc->final_finish_mac(s,
sender, slen,
s->s3->tmp.finish_md);
if (i <= 0)
return 0;
s->s3->tmp.finish_md_len = i;
memcpy(p, s->s3->tmp.finish_md, i);
l = i;
/*
* Copy the finished so we can use it for renegotiation checks
*/
if (s->type == SSL_ST_CONNECT) {
OPENSSL_assert(i <= EVP_MAX_MD_SIZE);
memcpy(s->s3->previous_client_finished, s->s3->tmp.finish_md, i);
s->s3->previous_client_finished_len = i;
} else {
OPENSSL_assert(i <= EVP_MAX_MD_SIZE);
memcpy(s->s3->previous_server_finished, s->s3->tmp.finish_md, i);
s->s3->previous_server_finished_len = i;
}
if (!ssl_set_handshake_header(s, SSL3_MT_FINISHED, l)) {
SSLerr(SSL_F_TLS_CONSTRUCT_FINISHED, ERR_R_INTERNAL_ERROR);
return 0;
}
return 1;
}
#ifndef OPENSSL_NO_NEXTPROTONEG
/*
* ssl3_take_mac calculates the Finished MAC for the handshakes messages seen
* to far.
*/
static void ssl3_take_mac(SSL *s)
{
const char *sender;
int slen;
/*
* If no new cipher setup return immediately: other functions will set
* the appropriate error.
*/
if (s->s3->tmp.new_cipher == NULL)
return;
if (s->state & SSL_ST_CONNECT) {
sender = s->method->ssl3_enc->server_finished_label;
slen = s->method->ssl3_enc->server_finished_label_len;
} else {
sender = s->method->ssl3_enc->client_finished_label;
slen = s->method->ssl3_enc->client_finished_label_len;
}
s->s3->tmp.peer_finish_md_len = s->method->ssl3_enc->final_finish_mac(s,
sender,
slen,
s->s3->tmp.peer_finish_md);
}
#endif
int ssl3_get_change_cipher_spec(SSL *s, int a, int b)
{
int ok;
long n;
n = s->method->ssl_get_message(s, a, b, SSL3_MT_CHANGE_CIPHER_SPEC, 1, &ok);
if (!ok)
return ((int)n);
if (tls_process_change_cipher_spec(s, n) == 0) {
statem_set_error(s);
return -1;
}
return 1;
}
enum MSG_PROCESS_RETURN tls_process_change_cipher_spec(SSL *s, long n)
{
int al;
/*
* 'Change Cipher Spec' is just a single byte, which should already have
* been consumed by ssl_get_message() so there should be no bytes left,
* unless we're using DTLS1_BAD_VER, which has an extra 2 bytes
*/
if (SSL_IS_DTLS(s)) {
if ((s->version == DTLS1_BAD_VER && n != DTLS1_CCS_HEADER_LENGTH + 1)
|| (s->version != DTLS1_BAD_VER
&& n != DTLS1_CCS_HEADER_LENGTH - 1)) {
al = SSL_AD_ILLEGAL_PARAMETER;
SSLerr(SSL_F_TLS_PROCESS_CHANGE_CIPHER_SPEC,
SSL_R_BAD_CHANGE_CIPHER_SPEC);
goto f_err;
}
} else {
if (n != 0) {
al = SSL_AD_ILLEGAL_PARAMETER;
SSLerr(SSL_F_TLS_PROCESS_CHANGE_CIPHER_SPEC,
SSL_R_BAD_CHANGE_CIPHER_SPEC);
goto f_err;
}
}
/* Check we have a cipher to change to */
if (s->s3->tmp.new_cipher == NULL) {
al = SSL_AD_UNEXPECTED_MESSAGE;
SSLerr(SSL_F_TLS_PROCESS_CHANGE_CIPHER_SPEC, SSL_R_CCS_RECEIVED_EARLY);
goto f_err;
}
s->s3->change_cipher_spec = 1;
if (!ssl3_do_change_cipher_spec(s)) {
al = SSL_AD_INTERNAL_ERROR;
SSLerr(SSL_F_TLS_PROCESS_CHANGE_CIPHER_SPEC, ERR_R_INTERNAL_ERROR);
goto f_err;
}
if (SSL_IS_DTLS(s)) {
dtls1_reset_seq_numbers(s, SSL3_CC_READ);
if (s->version == DTLS1_BAD_VER)
s->d1->handshake_read_seq++;
#ifndef OPENSSL_NO_SCTP
/*
* Remember that a CCS has been received, so that an old key of
* SCTP-Auth can be deleted when a CCS is sent. Will be ignored if no
* SCTP is used
*/
BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD, 1, NULL);
#endif
}
return MSG_PROCESS_CONTINUE_READING;
f_err:
ssl3_send_alert(s, SSL3_AL_FATAL, al);
statem_set_error(s);
return MSG_PROCESS_ERROR;
}
int ssl3_get_finished(SSL *s, int a, int b)
{
int ok;
long n;
#ifdef OPENSSL_NO_NEXTPROTONEG
/*
* the mac has already been generated when we received the change cipher
* spec message and is in s->s3->tmp.peer_finish_md
*/
#endif
/* 64 argument should actually be 36+4 :-) */
n = s->method->ssl_get_message(s, a, b, SSL3_MT_FINISHED, 64, &ok);
if (!ok)
return ((int)n);
return tls_process_finished(s, (unsigned long)n);
}
enum MSG_PROCESS_RETURN tls_process_finished(SSL *s, unsigned long n)
{
int al, i;
unsigned char *p;
/* If this occurs, we have missed a message */
if (!s->s3->change_cipher_spec) {
al = SSL_AD_UNEXPECTED_MESSAGE;
SSLerr(SSL_F_TLS_PROCESS_FINISHED, SSL_R_GOT_A_FIN_BEFORE_A_CCS);
goto f_err;
}
s->s3->change_cipher_spec = 0;
p = (unsigned char *)s->init_msg;
i = s->s3->tmp.peer_finish_md_len;
if (i < 0 || (unsigned long)i != n) {
al = SSL_AD_DECODE_ERROR;
SSLerr(SSL_F_TLS_PROCESS_FINISHED, SSL_R_BAD_DIGEST_LENGTH);
goto f_err;
}
if (CRYPTO_memcmp(p, s->s3->tmp.peer_finish_md, i) != 0) {
al = SSL_AD_DECRYPT_ERROR;
SSLerr(SSL_F_TLS_PROCESS_FINISHED, SSL_R_DIGEST_CHECK_FAILED);
goto f_err;
}
/*
* Copy the finished so we can use it for renegotiation checks
*/
if (s->type == SSL_ST_ACCEPT) {
OPENSSL_assert(i <= EVP_MAX_MD_SIZE);
memcpy(s->s3->previous_client_finished, s->s3->tmp.peer_finish_md, i);
s->s3->previous_client_finished_len = i;
} else {
OPENSSL_assert(i <= EVP_MAX_MD_SIZE);
memcpy(s->s3->previous_server_finished, s->s3->tmp.peer_finish_md, i);
s->s3->previous_server_finished_len = i;
}
return MSG_PROCESS_CONTINUE_PROCESSING;
f_err:
ssl3_send_alert(s, SSL3_AL_FATAL, al);
statem_set_error(s);
return MSG_PROCESS_ERROR;
}
/*-
* for these 2 messages, we need to
* ssl->enc_read_ctx re-init
* ssl->rlayer.read_sequence zero
* ssl->s3->read_mac_secret re-init
* ssl->session->read_sym_enc assign
* ssl->session->read_compression assign
* ssl->session->read_hash assign
*/
int ssl3_send_change_cipher_spec(SSL *s, int a, int b)
{
if (s->state == a) {
if(tls_construct_change_cipher_spec(s) == 0) {
statem_set_error(s);
return 0;
}
s->state = b;
}
/* SSL3_ST_CW_CHANGE_B */
return (ssl3_do_write(s, SSL3_RT_CHANGE_CIPHER_SPEC));
}
int tls_construct_change_cipher_spec(SSL *s)
{
unsigned char *p;
p = (unsigned char *)s->init_buf->data;
*p = SSL3_MT_CCS;
s->init_num = 1;
s->init_off = 0;
return 1;
}
unsigned long ssl3_output_cert_chain(SSL *s, CERT_PKEY *cpk)
{
unsigned char *p;
unsigned long l = 3 + SSL_HM_HEADER_LENGTH(s);
if (!ssl_add_cert_chain(s, cpk, &l))
return 0;
l -= 3 + SSL_HM_HEADER_LENGTH(s);
p = ssl_handshake_start(s);
l2n3(l, p);
l += 3;
if (!ssl_set_handshake_header(s, SSL3_MT_CERTIFICATE, l)) {
SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN, ERR_R_INTERNAL_ERROR);
return 0;
}
return l + SSL_HM_HEADER_LENGTH(s);
}
enum WORK_STATE tls_finish_handshake(SSL *s, enum WORK_STATE wst)
{
void (*cb) (const SSL *ssl, int type, int val) = NULL;
#ifndef OPENSSL_NO_SCTP
if (SSL_IS_DTLS(s) && BIO_dgram_is_sctp(SSL_get_wbio(s))) {
enum WORK_STATE ret;
ret = dtls_wait_for_dry(s);
if (ret != WORK_FINISHED_CONTINUE)
return ret;
}
#endif
/* clean a few things up */
ssl3_cleanup_key_block(s);
BUF_MEM_free(s->init_buf);
s->init_buf = NULL;
ssl_free_wbio_buffer(s);
s->init_num = 0;
if (!s->server || s->renegotiate == 2) {
/* skipped if we just sent a HelloRequest */
s->renegotiate = 0;
s->new_session = 0;
if (s->server) {
s->renegotiate = 0;
s->new_session = 0;
ssl_update_cache(s, SSL_SESS_CACHE_SERVER);
s->ctx->stats.sess_accept_good++;
s->handshake_func = ssl3_accept;
} else {
ssl_update_cache(s, SSL_SESS_CACHE_CLIENT);
if (s->hit)
s->ctx->stats.sess_hit++;
s->handshake_func = ssl3_connect;
s->ctx->stats.sess_connect_good++;
}
if (s->info_callback != NULL)
cb = s->info_callback;
else if (s->ctx->info_callback != NULL)
cb = s->ctx->info_callback;
if (cb != NULL)
cb(s, SSL_CB_HANDSHAKE_DONE, 1);
if (SSL_IS_DTLS(s)) {
/* done with handshaking */
s->d1->handshake_read_seq = 0;
s->d1->handshake_write_seq = 0;
s->d1->next_handshake_write_seq = 0;
}
}
return WORK_FINISHED_STOP;
}
/*
* Obtain handshake message of message type 'mt' (any if mt == -1), maximum
* acceptable body length 'max'. The first four bytes (msg_type and length)
* are read in state 'st1', the body is read in state 'stn'.
*/
long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok)
{
unsigned char *p;
long n;
int al, mtin;
if (s->s3->tmp.reuse_message) {
s->s3->tmp.reuse_message = 0;
if ((mt >= 0) && (s->s3->tmp.message_type != mt)) {
al = SSL_AD_UNEXPECTED_MESSAGE;
SSLerr(SSL_F_SSL3_GET_MESSAGE, SSL_R_UNEXPECTED_MESSAGE);
goto f_err;
}
*ok = 1;
s->state = stn;
s->init_msg = s->init_buf->data + SSL3_HM_HEADER_LENGTH;
s->init_num = (int)s->s3->tmp.message_size;
return s->init_num;
}
p = (unsigned char *)s->init_buf->data;
if (s->state == st1) {
if (tls_get_message_header(s, &mtin) == 0) {
/* Could be NBIO */
*ok = 0;
return -1;
}
s->state = stn;
if (s->init_num == 0
&& mtin == SSL3_MT_CHANGE_CIPHER_SPEC
&& (mt < 0 || mt == SSL3_MT_CHANGE_CIPHER_SPEC)) {
if (*p != SSL3_MT_CCS) {
al = SSL_AD_UNEXPECTED_MESSAGE;
SSLerr(SSL_F_SSL3_GET_MESSAGE,
SSL_R_UNEXPECTED_MESSAGE);
goto f_err;
}
s->init_msg = p + 1;
s->s3->tmp.message_type = SSL3_MT_CHANGE_CIPHER_SPEC;
s->s3->tmp.message_size = s->init_num;
*ok = 1;
if (s->msg_callback)
s->msg_callback(0, s->version,
SSL3_RT_CHANGE_CIPHER_SPEC, p, 1, s,
s->msg_callback_arg);
return s->init_num;
}
if (s->s3->tmp.message_size > (unsigned long)max) {
al = SSL_AD_ILLEGAL_PARAMETER;
SSLerr(SSL_F_SSL3_GET_MESSAGE, SSL_R_EXCESSIVE_MESSAGE_SIZE);
goto f_err;
}
if ((mt >= 0) && (mtin != mt)) {
al = SSL_AD_UNEXPECTED_MESSAGE;
SSLerr(SSL_F_SSL3_GET_MESSAGE, SSL_R_UNEXPECTED_MESSAGE);
goto f_err;
}
}
/* next state (stn) */
if (tls_get_message_body(s, (unsigned long *)&n) == 0) {
*ok = 0;
return n;
}
*ok = 1;
return n;
f_err:
ssl3_send_alert(s, SSL3_AL_FATAL, al);
statem_set_error(s);
*ok = 0;
return 0;
}
int tls_get_message_header(SSL *s, int *mt)
{
/* s->init_num < SSL3_HM_HEADER_LENGTH */
int skip_message, i, recvd_type, al;
unsigned char *p;
unsigned long l;
p = (unsigned char *)s->init_buf->data;
do {
while (s->init_num < SSL3_HM_HEADER_LENGTH) {
i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE, &recvd_type,
&p[s->init_num], SSL3_HM_HEADER_LENGTH - s->init_num, 0);
if (i <= 0) {
s->rwstate = SSL_READING;
return 0;
}
if (recvd_type == SSL3_RT_CHANGE_CIPHER_SPEC) {
s->s3->tmp.message_type = *mt = SSL3_MT_CHANGE_CIPHER_SPEC;
s->init_num = i - 1;
s->s3->tmp.message_size = i;
return 1;
} else if (recvd_type != SSL3_RT_HANDSHAKE) {
al = SSL_AD_UNEXPECTED_MESSAGE;
SSLerr(SSL_F_TLS_GET_MESSAGE_HEADER, SSL_R_CCS_RECEIVED_EARLY);
goto f_err;
}
s->init_num += i;
}
skip_message = 0;
if (!s->server)
if (p[0] == SSL3_MT_HELLO_REQUEST)
/*
* The server may always send 'Hello Request' messages --
* we are doing a handshake anyway now, so ignore them if
* their format is correct. Does not count for 'Finished'
* MAC.
*/
if (p[1] == 0 && p[2] == 0 && p[3] == 0) {
s->init_num = 0;
skip_message = 1;
if (s->msg_callback)
s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE,
p, SSL3_HM_HEADER_LENGTH, s,
s->msg_callback_arg);
}
} while (skip_message);
/* s->init_num == SSL3_HM_HEADER_LENGTH */
*mt = *p;
s->s3->tmp.message_type = *(p++);
if(RECORD_LAYER_is_sslv2_record(&s->rlayer)) {
/*
* Only happens with SSLv3+ in an SSLv2 backward compatible
* ClientHello
*/
/*
* Total message size is the remaining record bytes to read
* plus the SSL3_HM_HEADER_LENGTH bytes that we already read
*/
l = RECORD_LAYER_get_rrec_length(&s->rlayer)
+ SSL3_HM_HEADER_LENGTH;
if (l && !BUF_MEM_grow_clean(s->init_buf, (int)l)) {
SSLerr(SSL_F_TLS_GET_MESSAGE_HEADER, ERR_R_BUF_LIB);
goto err;
}
s->s3->tmp.message_size = l;
s->init_msg = s->init_buf->data;
s->init_num = SSL3_HM_HEADER_LENGTH;
} else {
n2l3(p, l);
/* BUF_MEM_grow takes an 'int' parameter */
if (l > (INT_MAX - SSL3_HM_HEADER_LENGTH)) {
al = SSL_AD_ILLEGAL_PARAMETER;
SSLerr(SSL_F_TLS_GET_MESSAGE_HEADER, SSL_R_EXCESSIVE_MESSAGE_SIZE);
goto f_err;
}
if (l && !BUF_MEM_grow_clean(s->init_buf,
(int)l + SSL3_HM_HEADER_LENGTH)) {
SSLerr(SSL_F_TLS_GET_MESSAGE_HEADER, ERR_R_BUF_LIB);
goto err;
}
s->s3->tmp.message_size = l;
s->init_msg = s->init_buf->data + SSL3_HM_HEADER_LENGTH;
s->init_num = 0;
}
return 1;
f_err:
ssl3_send_alert(s, SSL3_AL_FATAL, al);
err:
return 0;
}
int tls_get_message_body(SSL *s, unsigned long *len)
{
long n;
unsigned char *p;
int i;
if (s->s3->tmp.message_type == SSL3_MT_CHANGE_CIPHER_SPEC) {
/* We've already read everything in */
*len = (unsigned long)s->init_num;
return 1;
}
p = s->init_msg;
n = s->s3->tmp.message_size - s->init_num;
while (n > 0) {
i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE, NULL,
&p[s->init_num], n, 0);
if (i <= 0) {
s->rwstate = SSL_READING;
*len = 0;
return 0;
}
s->init_num += i;
n -= i;
}
#ifndef OPENSSL_NO_NEXTPROTONEG
/*
* If receiving Finished, record MAC of prior handshake messages for
* Finished verification.
*/
if (*s->init_buf->data == SSL3_MT_FINISHED)
ssl3_take_mac(s);
#endif
/* Feed this message into MAC computation. */
if(RECORD_LAYER_is_sslv2_record(&s->rlayer)) {
ssl3_finish_mac(s, (unsigned char *)s->init_buf->data, s->init_num);
if (s->msg_callback)
s->msg_callback(0, SSL2_VERSION, 0, s->init_buf->data,
(size_t)s->init_num, s, s->msg_callback_arg);
} else {
ssl3_finish_mac(s, (unsigned char *)s->init_buf->data,
s->init_num + SSL3_HM_HEADER_LENGTH);
if (s->msg_callback)
s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, s->init_buf->data,
(size_t)s->init_num + SSL3_HM_HEADER_LENGTH, s,
s->msg_callback_arg);
}
/*
* init_num should never be negative...should probably be declared
* unsigned
*/
if (s->init_num < 0) {
SSLerr(SSL_F_TLS_GET_MESSAGE_BODY, ERR_R_INTERNAL_ERROR);
ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
*len = 0;
return 0;
}
*len = (unsigned long)s->init_num;
return 1;
}
int ssl_cert_type(X509 *x, EVP_PKEY *pkey)
{
EVP_PKEY *pk;
int ret = -1, i;
if (pkey == NULL)
pk = X509_get_pubkey(x);
else
pk = pkey;
if (pk == NULL)
goto err;
i = pk->type;
if (i == EVP_PKEY_RSA) {
ret = SSL_PKEY_RSA_ENC;
} else if (i == EVP_PKEY_DSA) {
ret = SSL_PKEY_DSA_SIGN;
}
#ifndef OPENSSL_NO_EC
else if (i == EVP_PKEY_EC) {
ret = SSL_PKEY_ECC;
}
#endif
else if (i == NID_id_GostR3410_2001) {
ret = SSL_PKEY_GOST01;
} else if (x && (i == EVP_PKEY_DH || i == EVP_PKEY_DHX)) {
/*
* For DH two cases: DH certificate signed with RSA and DH
* certificate signed with DSA.
*/
i = X509_certificate_type(x, pk);
if (i & EVP_PKS_RSA)
ret = SSL_PKEY_DH_RSA;
else if (i & EVP_PKS_DSA)
ret = SSL_PKEY_DH_DSA;
}
err:
if (!pkey)
EVP_PKEY_free(pk);
return (ret);
}
int ssl_verify_alarm_type(long type)
{
int al;
switch (type) {
case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
case X509_V_ERR_UNABLE_TO_GET_CRL:
case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
al = SSL_AD_UNKNOWN_CA;
break;
case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
case X509_V_ERR_CERT_NOT_YET_VALID:
case X509_V_ERR_CRL_NOT_YET_VALID:
case X509_V_ERR_CERT_UNTRUSTED:
case X509_V_ERR_CERT_REJECTED:
al = SSL_AD_BAD_CERTIFICATE;
break;
case X509_V_ERR_CERT_SIGNATURE_FAILURE:
case X509_V_ERR_CRL_SIGNATURE_FAILURE:
al = SSL_AD_DECRYPT_ERROR;
break;
case X509_V_ERR_CERT_HAS_EXPIRED:
case X509_V_ERR_CRL_HAS_EXPIRED:
al = SSL_AD_CERTIFICATE_EXPIRED;
break;
case X509_V_ERR_CERT_REVOKED:
al = SSL_AD_CERTIFICATE_REVOKED;
break;
case X509_V_ERR_OUT_OF_MEM:
al = SSL_AD_INTERNAL_ERROR;
break;
case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
case X509_V_ERR_CERT_CHAIN_TOO_LONG:
case X509_V_ERR_PATH_LENGTH_EXCEEDED:
case X509_V_ERR_INVALID_CA:
al = SSL_AD_UNKNOWN_CA;
break;
case X509_V_ERR_APPLICATION_VERIFICATION:
al = SSL_AD_HANDSHAKE_FAILURE;
break;
case X509_V_ERR_INVALID_PURPOSE:
al = SSL_AD_UNSUPPORTED_CERTIFICATE;
break;
default:
al = SSL_AD_CERTIFICATE_UNKNOWN;
break;
}
return (al);
}
int ssl_allow_compression(SSL *s)
{
if (s->options & SSL_OP_NO_COMPRESSION)
return 0;
return ssl_security(s, SSL_SECOP_COMPRESSION, 0, 0, NULL);
}