Line data    Source code

       1             : /*
       2             :  *  Copyright (C) 2004-2024 Savoir-faire Linux Inc.
       3             :  *
       4             :  *  This program is free software: you can redistribute it and/or modify
       5             :  *  it under the terms of the GNU General Public License as published by
       6             :  *  the Free Software Foundation, either version 3 of the License, or
       7             :  *  (at your option) any later version.
       8             :  *
       9             :  *  This program is distributed in the hope that it will be useful,
      10             :  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
      11             :  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
      12             :  *  GNU General Public License for more details.
      13             :  *
      14             :  *  You should have received a copy of the GNU General Public License
      15             :  *  along with this program. If not, see <https://www.gnu.org/licenses/>.
      16             :  */
      17             : #pragma once
      18             : 
      19             : #ifdef HAVE_CONFIG_H
      20             : #include "config.h"
      21             : #endif
      22             : 
      23             : #include "ring_types.h"
      24             : #include "noncopyable.h"
      25             : 
      26             : #include <dhtnet/ip_utils.h>
      27             : 
      28             : #include <pjsip.h>
      29             : #include <pjlib.h>
      30             : #include <pjsip_ua.h>
      31             : #include <pjlib-util.h>
      32             : #include <pjnath.h>
      33             : #include <pjnath/stun_config.h>
      34             : 
      35             : #ifdef ENABLE_VIDEO
      36             : #include <queue>
      37             : #endif
      38             : #include <map>
      39             : #include <mutex>
      40             : #include <memory>
      41             : #include <functional>
      42             : #include <thread>
      43             : #include <atomic>
      44             : 
      45             : namespace jami {
      46             : 
      47             : class SIPCall;
      48             : class SIPAccountBase;
      49             : class SIPVoIPLink;
      50             : class SipTransportBroker;
      51             : 
      52             : /**
      53             :  * @file sipvoiplink.h
      54             :  * @brief Specific VoIPLink for SIP (SIP core for incoming and outgoing events).
      55             :  */
      56             : 
      57             : class SIPVoIPLink
      58             : {
      59             : public:
      60             :     SIPVoIPLink();
      61             :     ~SIPVoIPLink();
      62             : 
      63             :     /**
      64             :      * Destroy structures
      65             :      */
      66             :     void shutdown();
      67             : 
      68             :     /**
      69             :      * Event listener. Each event send by the call manager is received and handled from here
      70             :      */
      71             :     void handleEvents();
      72             : 
      73             :     /**
      74             :      * Register a new keepalive registration timer to this endpoint
      75             :      */
      76             :     void registerKeepAliveTimer(pj_timer_entry& timer, pj_time_val& delay);
      77             : 
      78             :     /**
      79             :      * Abort currently registered timer
      80             :      */
      81             :     void cancelKeepAliveTimer(pj_timer_entry& timer);
      82             : 
      83             :     /**
      84             :      * Get the memory pool factory since each calls has its own memory pool
      85             :      */
      86             :     pj_caching_pool* getMemoryPoolFactory();
      87             : 
      88             :     /**
      89             :      * Create the default UDP transport according ot Ip2Ip profile settings
      90             :      */
      91             :     void createDefaultSipUdpTransport();
      92             : 
      93             : public:
      94             :     static void createSDPOffer(pjsip_inv_session* inv);
      95             : 
      96             :     /**
      97             :      * Instance that maintain and manage transport (UDP, TLS)
      98             :      */
      99             :     std::unique_ptr<SipTransportBroker> sipTransportBroker;
     100             : 
     101             :     typedef std::function<void(std::vector<dhtnet::IpAddr>)> SrvResolveCallback;
     102             :     void resolveSrvName(const std::string& name,
     103             :                         pjsip_transport_type_e type,
     104             :                         SrvResolveCallback&& cb);
     105             : 
     106             :     /**
     107             :      * Guess the account related to an incoming SIP call.
     108             :      */
     109             :     std::shared_ptr<SIPAccountBase> guessAccount(std::string_view userName,
     110             :                                                  std::string_view server,
     111             :                                                  std::string_view fromUri) const;
     112             : 
     113             :     int getModId();
     114             :     pjsip_endpoint* getEndpoint();
     115             :     pjsip_module* getMod();
     116             : 
     117             :     pj_caching_pool* getCachingPool() noexcept;
     118             :     pj_pool_t* getPool() noexcept;
     119             : 
     120             :     /**
     121             :      * Get the correct address to use (ie advertised) from
     122             :      * a uri. The corresponding transport that should be used
     123             :      * with that uri will be discovered.
     124             :      *
     125             :      * @param uri The uri from which we want to discover the address to use
     126             :      * @param transport The transport to use to discover the address
     127             :      */
     128             :     void findLocalAddressFromTransport(pjsip_transport* transport,
     129             :                                        pjsip_transport_type_e transportType,
     130             :                                        const std::string& host,
     131             :                                        std::string& address,
     132             :                                        pj_uint16_t& port) const;
     133             : 
     134             :     bool findLocalAddressFromSTUN(pjsip_transport* transport,
     135             :                                   pj_str_t* stunServerName,
     136             :                                   int stunPort,
     137             :                                   std::string& address,
     138             :                                   pj_uint16_t& port) const;
     139             : 
     140             :     /**
     141             :      * Initialize the transport selector
     142             :      * @param transport     A transport associated with an account
     143             :      * @return                  A transport selector structure
     144             :      */
     145         447 :     static inline pjsip_tpselector getTransportSelector(pjsip_transport* transport)
     146             :     {
     147             :         pjsip_tpselector tp;
     148         447 :         tp.type = PJSIP_TPSELECTOR_TRANSPORT;
     149         447 :         tp.u.transport = transport;
     150         447 :         return tp;
     151             :     }
     152             : 
     153             : private:
     154             :     NON_COPYABLE(SIPVoIPLink);
     155             : 
     156             :     mutable pj_caching_pool cp_;
     157             :     std::unique_ptr<pj_pool_t, decltype(pj_pool_release)&> pool_;
     158             :     std::atomic_bool running_ {true};
     159             :     std::thread sipThread_;
     160             : 
     161             :     friend class SIPTest;
     162             : };
     163             : 
     164             : } // namespace jami