mirror of https://github.com/sipwise/sems.git
git-svn-id: http://svn.berlios.de/svnroot/repos/sems/trunk@950 8eb893ce-cfd4-0310-b710-fb5ebe64c474sayer/1.4-spce2.6
Stefan Sayer
18 years ago
parent
a5d8e78aa4
commit
6f44a030bb
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/*
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* $Id: AmZRTP.cpp 934 2008-05-06 09:25:34Z sayer $
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*
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* Copyright (C) 2008 iptego GmbH
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*
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* This file is part of sems, a free SIP media server.
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*
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* sems is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version
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*
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* For a license to use the ser software under conditions
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* other than those described here, or to purchase support for this
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* software, please contact iptel.org by e-mail at the following addresses:
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* info@iptel.org
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*
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* sems is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifdef WITH_ZRTP
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#include "AmZRTP.h"
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#include "AmSession.h"
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#include "log.h"
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#include "AmConfigReader.h"
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#include "AmUtils.h"
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#define ZRTP_CACHE_SAVE_INTERVAL 1
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string AmZRTP::cache_path = "zrtp_cache.dat";
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int AmZRTP::zrtp_cache_save_cntr = 0;
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AmMutex AmZRTP::zrtp_cache_mut;
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zrtp_global_ctx_t AmZRTP::zrtp_global; // persistent storage for libzrtp data
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zrtp_zid_t AmZRTP::zrtp_instance_zid = {"defaultsems"}; // todo: generate one
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int AmZRTP::init() {
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AmConfigReader cfg;
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string cfgname=add2path(AmConfig::ModConfigPath, 1, "zrtp.conf");
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if(cfg.loadFile(cfgname)) {
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ERROR("No %s config file present.\n",
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cfgname.c_str());
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return -1;
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}
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cache_path = cfg.getParameter("cache_path");
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string zid = cfg.getParameter("zid");
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if (zid.length() != sizeof(zrtp_zid_t)) {
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ERROR("ZID of this instance MUST be set for ZRTP.\n");
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ERROR("ZID needs to be %u characters long.\n",
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sizeof(zrtp_zid_t));
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return -1;
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}
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for (int i=0;i<12;i++)
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zrtp_instance_zid[i]=zid[i];
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DBG("initializing ZRTP library with ZID '%s', cache path '%s'.\n",
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zid.c_str(), cache_path.c_str());
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if ( zrtp_status_ok != zrtp_init(&zrtp_global, "zrtp_sems") ) {
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ERROR("Some error during zrtp initialization\n");
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return -1;
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}
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zrtp_add_entropy(&zrtp_global, NULL, 0);
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DBG("ZRTP initialized ok.\n");
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return 0;
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}
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void AmZRTP::freeSession(zrtp_conn_ctx_t* zrtp_session) {
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zrtp_done_session_ctx(zrtp_session);
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free(zrtp_session);
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// save zrtp cache
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zrtp_cache_mut.lock();
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if (!((++zrtp_cache_save_cntr) % ZRTP_CACHE_SAVE_INTERVAL)) {
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if (zrtp_cache_user_down() != zrtp_status_ok) {
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ERROR("while writing ZRTP cache.\n");
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}
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}
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zrtp_cache_mut.unlock();
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}
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void zrtp_get_cache_path(char *path, uint32_t length) {
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sprintf(path, "%s", AmZRTP::cache_path.c_str());
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}
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// void zrtp_get_cache_path(char *path, uint32_t length) {
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// }
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void zrtp_event_callback(zrtp_event_t event, zrtp_stream_ctx_t *stream_ctx)
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{
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if (NULL==stream_ctx) {
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ERROR("event received without stream context.\n");
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return;
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}
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AmSession* sess = reinterpret_cast<AmSession*>(stream_ctx->stream_usr_data);
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if (NULL==sess) {
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ERROR("event received without session set up.\n");
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return;
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}
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sess->postEvent(new AmZRTPEvent(event, stream_ctx));
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}
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void zrtp_play_alert(zrtp_stream_ctx_t* ctx) {
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INFO("zrtp_play_alert: ALERT!\n");
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ctx->need_play_alert = zrtp_play_no;
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}
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int zrtp_send_rtp( const zrtp_stream_ctx_t* stream_ctx,
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char* packet, unsigned int length) {
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if (NULL==stream_ctx) {
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ERROR("trying to send packet without stream context.\n");
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return -1;
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}
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AmSession* sess = reinterpret_cast<AmSession*>(stream_ctx->stream_usr_data);
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if (NULL==sess) {
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ERROR("trying to send packet without session set up.\n");
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return -1;
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}
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return sess->rtp_str.send_raw(packet, length);
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}
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#define BUFFER_LOG_SIZE 256
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void zrtp_print_log(log_level_t level, const char* format, ...)
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{
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char buffer[BUFFER_LOG_SIZE];
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va_list arg;
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va_start(arg, format);
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vsnprintf(buffer, BUFFER_LOG_SIZE, format, arg);
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va_end( arg );
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int sems_lvl = L_ERR;
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switch(level) {
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case ZRTP_LOG_DEBUG: sems_lvl = L_DBG; break;
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case ZRTP_LOG_INFO: sems_lvl = L_INFO; break;
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case ZRTP_LOG_WARNING: sems_lvl = L_WARN; break;
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case ZRTP_LOG_ERROR: sems_lvl = L_ERR; break;
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case ZRTP_LOG_FATAL: sems_lvl = L_ERR; break;
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case ZRTP_LOG_ALL: sems_lvl = L_ERR; break;
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}
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_LOG(sems_lvl, "*** %s", buffer);
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}
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#endif
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@ -0,0 +1,73 @@
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/*
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* $Id: AmZRTP.h 934 2008-05-06 09:25:34Z sayer $
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*
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* Copyright (C) 2008 iptego GmbH
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*
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* This file is part of sems, a free SIP media server.
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*
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* sems is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version
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*
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* For a license to use the ser software under conditions
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* other than those described here, or to purchase support for this
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* software, please contact iptel.org by e-mail at the following addresses:
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* info@iptel.org
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*
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* sems is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _AM_ZRTP_H
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#define _AM_ZRTP_H
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#ifdef WITH_ZRTP
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#include "zrtp/zrtp.h"
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#include "AmThread.h"
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#include "AmEvent.h"
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#include <string>
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#include "zrtp/zrtp.h"
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extern zrtp_global_ctx_t zrtp_global; // persistent storage for libzrtp data
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extern zrtp_zid_t zrtp_instance_zid;
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struct AmZRTPEvent : public AmEvent {
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zrtp_stream_ctx_t* stream_ctx;
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AmZRTPEvent(int event_id, zrtp_stream_ctx_t* stream_ctx)
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: AmEvent(event_id), stream_ctx(stream_ctx) { }
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~AmZRTPEvent() { }
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};
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struct AmZRTP {
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static int zrtp_cache_save_cntr;
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static std::string cache_path;
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static AmMutex zrtp_cache_mut;
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static int init();
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static zrtp_global_ctx_t zrtp_global;
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static zrtp_zid_t zrtp_instance_zid;
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static void freeSession(zrtp_conn_ctx_t* zrtp_session);
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};
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#if defined(__cplusplus)
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extern "C" {
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#endif
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void zrtp_get_cache_path(char *path, uint32_t length);
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zrtp_status_t zrtp_cache_user_down();
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#if defined(__cplusplus)
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}
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#endif
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#endif // WITH_ZRTP
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#endif //_AM_ZRTP_H
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@ -0,0 +1,9 @@
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#
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# Path to secrets cache file. Must be writable.
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#
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cache_path=zrtp_cache.dat
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#
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# ZID - must be set to a unique identifier on installation.
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#
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#zid=012345678901
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