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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef AXIS2_SSL_ENABLED
#include "ssl_utils.h"
#include <openssl/err.h>
BIO *bio_err = 0;
static int
password_cb(
char *buf,
int size,
int rwflag,
void *passwd)
{
strncpy(buf, (char *) passwd, size);
buf[size - 1] = '\0';
return (int)(strlen(buf));
/* We are sure that the difference lies within the int range */
}
AXIS2_EXTERN SSL_CTX *AXIS2_CALL
axis2_ssl_utils_initialize_ctx(
const axutil_env_t * env,
axis2_char_t * server_cert,
axis2_char_t * key_file,
axis2_char_t * ssl_pp)
{
SSL_CTX *ctx = NULL;
axis2_char_t *ca_file = server_cert;
SSL_METHOD *meth;
if (!ca_file)
{
AXIS2_LOG_INFO(env->log, "[ssl client] CA certificate not specified");
AXIS2_HANDLE_ERROR(env, AXIS2_ERROR_SSL_NO_CA_FILE, AXIS2_FAILURE);
return NULL;
}
if (!bio_err)
{
/* Global system initialization */
SSL_library_init();
SSL_load_error_strings();
OpenSSL_add_all_algorithms();
/* An error write context */
bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
}
/* Create our context */
# if defined OPENSSL_VERSION_NUMBER && (OPENSSL_VERSION_NUMBER >= 0x1000000fL)
meth = SSLv23_method();
# else
meth = SSLv23_method();
# endif
ctx = SSL_CTX_new(meth);
/* Load our keys and certificates
* If we need client certificates it has to be done here
*/
if (key_file) /*can we check if the server needs client auth? */
{
if (!ssl_pp)
{
AXIS2_LOG_INFO(env->log,
"[ssl client] No passphrase specified for \
key file %s and server cert %s", key_file, server_cert);
}
SSL_CTX_set_default_passwd_cb_userdata(ctx, (void *) ssl_pp);
SSL_CTX_set_default_passwd_cb(ctx, password_cb);
if (!(SSL_CTX_use_certificate_chain_file(ctx, key_file)))
{
AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI,
"[ssl client] Loading client certificate failed \
, key file %s", key_file);
SSL_CTX_free(ctx);
return NULL;
}
if (!(SSL_CTX_use_PrivateKey_file(ctx, key_file, SSL_FILETYPE_PEM)))
{
AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI,
"[ssl client] Loading client key failed, key file \
%s", key_file);
SSL_CTX_free(ctx);
return NULL;
}
}
else
{
AXIS2_LOG_INFO(env->log,
"[ssl client] Client certificate chain file"
"not specified");
}
/* Load the CAs we trust */
if (!(SSL_CTX_load_verify_locations(ctx, ca_file, 0) || (!SSL_CTX_set_default_verify_paths(ctx))))
{
AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI,
"[ssl client] Loading CA certificate failed, \
ca_file is %s", ca_file);
SSL_CTX_free(ctx);
return NULL;
}
return ctx;
}
AXIS2_EXTERN SSL *AXIS2_CALL
axis2_ssl_utils_initialize_ssl(
const axutil_env_t * env,
SSL_CTX * ctx,
axis2_socket_t socket)
{
SSL *ssl = NULL;
BIO *sbio = NULL;
AXIS2_PARAM_CHECK(env->error, ctx, NULL);
ssl = SSL_new(ctx);
if (!ssl)
{
AXIS2_LOG_ERROR (env->log, AXIS2_LOG_SI,
"[ssl]unable to create new ssl context");
return NULL;
}
sbio = BIO_new_socket((int)socket, BIO_NOCLOSE);
if (!sbio)
{
AXIS2_LOG_ERROR (env->log, AXIS2_LOG_SI,
"[ssl]unable to create BIO new socket for socket %d",
(int)socket);
return NULL;
}
SSL_set_bio(ssl, sbio, sbio);
if (SSL_connect(ssl) <= 0)
{
AXIS2_HANDLE_ERROR(env, AXIS2_ERROR_SSL_ENGINE, AXIS2_FAILURE);
return NULL;
}
if (SSL_get_verify_result(ssl) != X509_V_OK)
{
char sslerror[128]; /** error buffer must be at least 120 bytes long */
X509 *peer_cert = NULL;
X509_STORE *cert_store = NULL;
X509_NAME *peer_name = NULL;
X509_OBJECT *client_object = NULL;
X509 *client_cert = NULL;
peer_cert = SSL_get_peer_certificate(ssl);
if (peer_cert && peer_cert->cert_info)
{
peer_name = (peer_cert->cert_info)->subject;
}
cert_store = SSL_CTX_get_cert_store(ctx);
if (peer_name && cert_store)
{
client_object = X509_OBJECT_retrieve_by_subject(cert_store->objs,
X509_LU_X509,
peer_name);
}
if (client_object)
{
client_cert = (client_object->data).x509;
if (client_cert &&
(M_ASN1_BIT_STRING_cmp(client_cert->signature,
peer_cert->signature) == 0))
{
if (peer_cert)
{
X509_free(peer_cert);
}
AXIS2_LOG_DEBUG(env->log, AXIS2_LOG_SI,
"[ssl client] SSL certificate verified against peer");
return ssl;
}
}
if (peer_cert)
{
X509_free(peer_cert);
}
ERR_error_string(SSL_get_verify_result(ssl), sslerror);
AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI,
"[ssl client] SSL certificate verification failed (%s)",
sslerror);
return NULL;
}
return ssl;
}
AXIS2_EXTERN axis2_status_t AXIS2_CALL
axis2_ssl_utils_cleanup_ssl(
const axutil_env_t * env,
SSL_CTX * ctx,
SSL * ssl)
{
if (ssl)
{
if(SSL_shutdown(ssl)==0)
{
SSL_free(ssl);
}
}
if (ctx)
{
SSL_CTX_free(ctx);
}
return AXIS2_SUCCESS;
}
#endif
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