+/* Copyright (C) 2015, Felix Morgner <felix.morgner@gmail.com>
+
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+ - 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.
+ - Neither the name of the Developers nor the names of its contributors may
+ be used to endorse or promote products derived from this software without
+ specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``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 FOUNDATION 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.
+*/
+
#include "ssl.h"
#include "conf.h"
#include "log.h"
static gnutls_priority_t cipherCache;
void initializeCertificate()
- {
- char* certificatePath = (char*) getStrConf(CERTIFICATE);
+{
+ char* certificatePath = (char*) getStrConf(CERTIFICATE);
- if(!certificatePath) {
- Log_fatal("No certificate file specified.");
- }
+ if(!certificatePath) {
+ Log_fatal("No certificate file specified.");
+ }
- char* keyPath = (char*) getStrConf(KEY);
+ char* keyPath = (char*) getStrConf(KEY);
- if(!keyPath) {
- Log_fatal("No key file specified");
- }
+ if(!keyPath) {
+ Log_fatal("No key file specified");
+ }
- gnutls_certificate_allocate_credentials(&certificate);
+ gnutls_certificate_allocate_credentials(&certificate);
- int error = gnutls_certificate_set_x509_key_file(certificate, certificatePath, keyPath, GNUTLS_X509_FMT_PEM);
+ int error = gnutls_certificate_set_x509_key_file(certificate, certificatePath, keyPath, GNUTLS_X509_FMT_PEM);
- if( error != GNUTLS_E_SUCCESS ) {
- Log_fatal("Could not open key (%s) or certificate (%s).", keyPath, certificatePath);
- }
+ if( error != GNUTLS_E_SUCCESS ) {
+ Log_fatal("Could not open key (%s) or certificate (%s).", keyPath, certificatePath);
+ }
- }
+}
void SSLi_init()
- {
- unsigned const bitCount = gnutls_sec_param_to_pk_bits(GNUTLS_PK_DH, GNUTLS_SEC_PARAM_MEDIUM);
+{
+ unsigned const bitCount = gnutls_sec_param_to_pk_bits(GNUTLS_PK_DH, GNUTLS_SEC_PARAM_MEDIUM);
- gnutls_dh_params_init(&dhParameters);
- gnutls_dh_params_generate2(dhParameters, bitCount);
+ gnutls_dh_params_init(&dhParameters);
+ gnutls_dh_params_generate2(dhParameters, bitCount);
#if GNUTLS_VERSION_NUMBER < 0x030300
- gnutls_global_init();
+ gnutls_global_init();
#endif
- gnutls_priority_init(&cipherCache, ciphers, NULL);
+ gnutls_priority_init(&cipherCache, ciphers, NULL);
- initializeCertificate();
+ initializeCertificate();
- Log_info("Sucessfully initialized GNUTLS version %s", gnutls_check_version(NULL));
+ Log_info("Sucessfully initialized GNUTLS version %s", gnutls_check_version(NULL));
- }
+}
void SSLi_deinit()
- {
- gnutls_certificate_free_credentials(certificate);
- gnutls_priority_deinit(cipherCache);
- gnutls_global_deinit();
- }
+{
+ gnutls_certificate_free_credentials(certificate);
+ gnutls_priority_deinit(cipherCache);
+ gnutls_global_deinit();
+}
SSL_handle_t * SSLi_newconnection( int * fileDescriptor, bool_t * isSSLReady )
- {
- gnutls_session_t * session = calloc(1, sizeof(gnutls_session_t));
+{
+ gnutls_session_t * session = calloc(1, sizeof(gnutls_session_t));
- gnutls_init(session, GNUTLS_SERVER);
- gnutls_priority_set(*session, cipherCache);
- gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE, certificate);
+ gnutls_init(session, GNUTLS_SERVER);
+ gnutls_priority_set(*session, cipherCache);
+ gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE, certificate);
- gnutls_certificate_server_set_request(*session, GNUTLS_CERT_REQUIRE);
+ gnutls_certificate_server_set_request(*session, GNUTLS_CERT_REQUIRE);
- gnutls_transport_set_int(*session, *fileDescriptor);
+ gnutls_transport_set_int(*session, *fileDescriptor);
- if(isSSLReady && SSLi_nonblockaccept(session, isSSLReady))
- *isSSLReady = true;
+ if(isSSLReady && SSLi_nonblockaccept(session, isSSLReady))
+ *isSSLReady = true;
- return session;
- }
+ return session;
+}
bool_t SSLi_getSHA1Hash(SSL_handle_t *session, uint8_t *hash)
- {
+{
gnutls_datum_t const * certificateData = gnutls_certificate_get_peers(*session, NULL);
size_t resultSize = 0;
int error = gnutls_fingerprint( GNUTLS_DIG_SHA1, certificateData, hash, &resultSize);
return error == GNUTLS_E_SUCCESS && resultSize == 20;
- }
+}
int SSLi_nonblockaccept( SSL_handle_t *session, bool_t * isSSLReady )
- {
- int error;
- do {
- error = gnutls_handshake(*session);
- } while(error < GNUTLS_E_SUCCESS && !gnutls_error_is_fatal(error));
+{
+ int error;
+ do {
+ error = gnutls_handshake(*session);
+ } while(error < GNUTLS_E_SUCCESS && !gnutls_error_is_fatal(error));
- if ( error < GNUTLS_E_SUCCESS ) {
- Log_warn("TLS handshake failed with error %i (%s).", error, gnutls_strerror(error));
- }
+ if ( error < GNUTLS_E_SUCCESS ) {
+ Log_warn("TLS handshake failed with error %i (%s).", error, gnutls_strerror(error));
+ }
- if(isSSLReady)
- *isSSLReady = true;
+ if(isSSLReady)
+ *isSSLReady = true;
- return error;
- }
+ return error;
+}
int SSLi_read(SSL_handle_t *session, uint8_t *buffer, int length)
- {
- return gnutls_record_recv(*session, buffer, length);
- }
+{
+ return gnutls_record_recv(*session, buffer, length);
+}
int SSLi_write(SSL_handle_t *session, uint8_t *buffer, int length)
- {
- return gnutls_record_send(*session, buffer, length);
- }
+{
+ return gnutls_record_send(*session, buffer, length);
+}
int SSLi_get_error(SSL_handle_t *session, int code)
- {
- return code;
- }
+{
+ return code;
+}
bool_t SSLi_data_pending(SSL_handle_t *session)
- {
- return gnutls_record_check_pending(*session);
- }
+{
+ return gnutls_record_check_pending(*session);
+}
void SSLi_shutdown(SSL_handle_t *session)
- {
- gnutls_bye(*session, GNUTLS_SHUT_WR);
- }
+{
+ gnutls_bye(*session, GNUTLS_SHUT_WR);
+}
void SSLi_free(SSL_handle_t *session)
- {
- gnutls_deinit(*session);
- free(session);
- }
+{
+ gnutls_deinit(*session);
+ free(session);
+}