src/charon/threads/receiver.c

   1 /**
   2  * @file receiver.c
   3  *
   4  * @brief Implementation of receiver_t.
   5  *
   6  */
   7
   8 /*
   9  * Copyright (C) 2005-2006 Martin Willi
  10  * Copyright (C) 2005 Jan Hutter
  11  * Hochschule fuer Technik Rapperswil
  12  *
  13  * This program is free software; you can redistribute it and/or modify it
  14  * under the terms of the GNU General Public License as published by the
  15  * Free Software Foundation; either version 2 of the License, or (at your
  16  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
  17  *
  18  * This program is distributed in the hope that it will be useful, but
  19  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  20  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  21  * for more details.
  22  */
  23
  24 #include <stdlib.h>
  25 #include <pthread.h>
  26
  27 #include "receiver.h"
  28
  29 #include <daemon.h>
  30 #include <network/socket.h>
  31 #include <network/packet.h>
  32 #include <queues/job_queue.h>
  33 #include <queues/jobs/job.h>
  34 #include <queues/jobs/incoming_packet_job.h>
  35
  36
  37 typedef struct private_receiver_t private_receiver_t;
  38
  39 /**
  40  * Private data of a receiver_t object.
  41  */
  42 struct private_receiver_t {
  43         /**
  44          * Public part of a receiver_t object.
  45          */
  46          receiver_t public;
  47
  48          /**
  49           * Assigned thread.
  50           */
  51          pthread_t assigned_thread;
  52 };
  53
  54 /**
  55  * Implementation of receiver_t.receive_packets.
  56  */
  57 static void receive_packets(private_receiver_t * this)
  58 {
  59         packet_t * current_packet;
  60         job_t *current_job;
  61
  62         /* cancellation disabled by default */
  63         pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
  64
  65         DBG1(DBG_NET, "receiver thread running, thread_ID: %06u",
  66                  (int)pthread_self());
  67
  68         while (TRUE)
  69         {
  70                 while (charon->socket->receive(charon->socket,&current_packet) == SUCCESS)
  71                 {
  72                         DBG2(DBG_NET, "creating job from packet");
  73                         current_job = (job_t *) incoming_packet_job_create(current_packet);
  74
  75                         charon->job_queue->add(charon->job_queue,current_job);
  76                 }
  77                 /* bad bad, TODO: rebuild the socket ? */
  78                 DBG1(DBG_NET, "receiving from socket failed!");
  79         }
  80 }
  81
  82 /**
  83  * Implementation of receiver_t.destroy.
  84  */
  85 static void destroy(private_receiver_t *this)
  86 {
  87         pthread_cancel(this->assigned_thread);
  88         pthread_join(this->assigned_thread, NULL);
  89         free(this);
  90 }
  91
  92 /*
  93  * Described in header.
  94  */
  95 receiver_t * receiver_create()
  96 {
  97         private_receiver_t *this = malloc_thing(private_receiver_t);
  98
  99         this->public.destroy = (void(*)(receiver_t*)) destroy;
 100
 101         if (pthread_create(&(this->assigned_thread), NULL, (void*(*)(void*))receive_packets, this) != 0)
 102         {
 103                 free(this);
 104                 charon->kill(charon, "unable to create receiver thread");
 105         }
 106
 107         return &(this->public);
 108 }