- created package threads

Source/charon/threads/receiver.c

@@ -0,0 +1,132 @@
+/**
+ * @file receiver.c
+ *
+ * @brief Implements the Receiver Thread encapsulated in the receiver_t object
+ *
+ */
+
+/*
+ * Copyright (C) 2005 Jan Hutter, Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include <stdlib.h>
+#include <pthread.h>
+
+#include "receiver.h"
+
+#include <globals.h>
+#include <network/socket.h>
+#include <network/packet.h>
+#include <queues/job_queue.h>
+#include <queues/jobs/job.h>
+#include <utils/allocator.h>
+#include <utils/logger_manager.h>
+
+/**
+ * Private data of a receiver object
+ */
+typedef struct private_receiver_s private_receiver_t;
+
+struct private_receiver_s {
+	/**
+	 * Public part of a receiver object
+	 */
+	 receiver_t public;
+
+	 /**
+	  * Assigned thread to the receiver_t object
+	  */
+	 pthread_t assigned_thread;
+	 /**
+	  * logger for the receiver
+	  */
+	 logger_t *logger;
+	 
+
+};
+
+/**
+ * Thread function started at creation of the receiver object
+ *
+ * @param this assigned receiver object
+ * @return SUCCESS if thread_function ended successfully, FAILED otherwise
+ */
+static void receiver_thread_function(private_receiver_t * this)
+{
+	packet_t * current_packet;
+	job_t *current_job;
+	/* cancellation disabled by default */
+	pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
+	while (1)
+	{
+		while (global_socket->receive(global_socket,&current_packet) == SUCCESS)
+		{
+			this->logger->log(this->logger, CONTROL, "creating job from packet");
+			current_job = (job_t *) incoming_packet_job_create(current_packet);
+			if (current_job == NULL)
+			{
+				this->logger->log(this->logger, ERROR, "job creation failed");
+			}
+
+			if (global_job_queue->add(global_job_queue,current_job) != SUCCESS)
+			{
+				this->logger->log(this->logger, ERROR, "job queueing failed");
+			}
+
+		}
+		/* bad bad, rebuild the socket ? */
+		this->logger->log(this->logger, ERROR, "receiving from socket failed!");
+	}
+}
+
+/**
+ * Implementation of receiver_t's destroy function
+ */
+static status_t destroy(private_receiver_t *this)
+{
+	this->logger->log(this->logger, CONTROL | MORE, "Going to terminate receiver thread");
+	pthread_cancel(this->assigned_thread);
+
+	pthread_join(this->assigned_thread, NULL);
+	this->logger->log(this->logger, CONTROL | MORE, "Receiver thread terminated");
+		
+	global_logger_manager->destroy_logger(global_logger_manager, this->logger);
+
+	allocator_free(this);
+	return SUCCESS;
+}
+
+
+receiver_t * receiver_create()
+{
+	private_receiver_t *this = allocator_alloc_thing(private_receiver_t);
+
+	this->public.destroy = (status_t(*)(receiver_t*)) destroy;
+	
+	this->logger = global_logger_manager->create_logger(global_logger_manager, RECEIVER, NULL);
+	if (this->logger == NULL)
+	{
+		allocator_free(this);
+	}
+	
+	if (pthread_create(&(this->assigned_thread), NULL, (void*(*)(void*))receiver_thread_function, this) != 0)
+	{
+		/* thread could not be created  */
+		global_logger_manager->destroy_logger(global_logger_manager, this->logger);
+		allocator_free(this);
+		return NULL;
+	}
+
+	return &(this->public);
+}

Source/charon/threads/receiver.h

@@ -0,0 +1,47 @@
+/**
+ * @file receiver.h
+ *
+ * @brief Implements the Receiver Thread encapsulated in the receiver_t object
+ *
+ */
+
+/*
+ * Copyright (C) 2005 Jan Hutter, Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#ifndef RECEIVER_H_
+#define RECEIVER_H_
+
+#include <types.h>
+
+/**
+ * @brief A Receiver object which receives packets on the socket and adds them to the job-queue
+ */
+typedef struct receiver_s receiver_t;
+
+struct receiver_s {
+
+	/**
+	 * @brief Destroys a receiver object
+	 *
+	 * @param receiver receiver object
+	 * @return SUCCESSFUL if succeeded, FAILED otherwise
+	 */
+	status_t (*destroy) (receiver_t *receiver);
+};
+
+
+receiver_t * receiver_create();
+
+#endif /*RECEIVER_H_*/

Source/charon/threads/scheduler.c

@@ -0,0 +1,120 @@
+/**
+ * @file scheduler.c
+ *
+ * @brief implements the scheduler, looks for jobs in event-queue
+ *
+ */
+
+/*
+ * Copyright (C) 2005 Jan Hutter, Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include <stdlib.h>
+#include <pthread.h>
+
+#include "scheduler.h"
+
+#include <globals.h>
+#include <definitions.h>
+#include <utils/allocator.h>
+#include <utils/logger_manager.h>
+#include <queues/job_queue.h>
+
+/**
+ * Private data of a scheduler object
+ */
+typedef struct private_scheduler_s private_scheduler_t;
+
+struct private_scheduler_s {
+	/**
+	 * Public part of a scheduler object
+	 */
+	 scheduler_t public;
+
+	 /**
+	  * Assigned thread to the scheduler_t object
+	  */
+	 pthread_t assigned_thread;
+	 
+	 /** 
+	  * logger for this scheduler
+	  */
+	 logger_t *logger;
+
+};
+
+/**
+ * Thread function started at creation of the scheduler object
+ *
+ * @param this assigned scheduler object
+ * @return SUCCESS if thread_function ended successfully, FAILED otherwise
+ */
+static void scheduler_thread_function(private_scheduler_t * this)
+{
+	/* cancellation disabled by default */
+	pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
+	job_t *current_job;
+
+	for (;;)
+	{
+		this->logger->log(this->logger, CONTROL|MORE, "waiting for next event...");
+		/* get a job, this block until one is available */
+		global_event_queue->get(global_event_queue, &current_job);
+		/* queue the job in the job queue, workers will eat them */
+		global_job_queue->add(global_job_queue, current_job);
+		this->logger->log(this->logger, CONTROL, "got event, added job %s to job-queue.", mapping_find(job_type_m, current_job->get_type(current_job)));
+	}
+}
+
+/**
+ * Implementation of scheduler_t's destroy function
+ */
+static status_t destroy(private_scheduler_t *this)
+{
+	this->logger->log(this->logger, CONTROL | MORE, "Going to terminate scheduler thread");
+	pthread_cancel(this->assigned_thread);
+
+	pthread_join(this->assigned_thread, NULL);
+	this->logger->log(this->logger, CONTROL | MORE, "Scheduler thread terminated");	
+	
+	global_logger_manager->destroy_logger(global_logger_manager, this->logger);
+
+	allocator_free(this);
+	return SUCCESS;
+}
+
+
+scheduler_t * scheduler_create()
+{
+	private_scheduler_t *this = allocator_alloc_thing(private_scheduler_t);
+
+	this->public.destroy = (status_t(*)(scheduler_t*)) destroy;
+	
+	this->logger = global_logger_manager->create_logger(global_logger_manager, SCHEDULER, NULL);
+	if (this->logger == NULL)
+	{
+		allocator_free(this);
+		return NULL;	
+	}
+	
+	if (pthread_create(&(this->assigned_thread), NULL, (void*(*)(void*))scheduler_thread_function, this) != 0)
+	{
+		/* thread could not be created  */
+		global_logger_manager->destroy_logger(global_logger_manager, this->logger);
+		allocator_free(this);
+		return NULL;
+	}
+
+	return &(this->public);
+}

Source/charon/threads/scheduler.h

@@ -0,0 +1,50 @@
+/**
+ * @file scheduler.h
+ * 
+ * @brief implements the scheduler, looks for jobs in event-queue
+ * 
+ */
+
+/*
+ * Copyright (C) 2005 Jan Hutter, Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#ifndef SCHEDULER_H_
+#define SCHEDULER_H_
+
+#include <types.h>
+
+/**
+ * @brief The scheduler, looks for timed events in event-queue and adds them
+ * to the job-queue.
+ * 
+ * Starts a thread which does the work, since event-queue is blocking
+ */
+typedef struct scheduler_s scheduler_t;
+
+struct scheduler_s { 	
+
+	/**
+	 * @brief Destroys a scheduler object
+	 * 
+	 * @param scheduler scheduler object
+	 * @return SUCCESSFUL if succeeded, FAILED otherwise
+	 */
+	status_t (*destroy) (scheduler_t *scheduler);
+};
+
+
+scheduler_t * scheduler_create();
+
+#endif /*SCHEDULER_H_*/

Source/charon/threads/sender.c

@@ -0,0 +1,127 @@
+/**
+ * @file sender.c
+ *
+ * @brief Implements the Sender Thread encapsulated in the sender_t object
+ *
+ */
+
+/*
+ * Copyright (C) 2005 Jan Hutter, Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include <stdlib.h>
+#include <pthread.h>
+
+#include "sender.h"
+
+#include <globals.h>
+#include <network/socket.h>
+#include <network/packet.h>
+#include <queues/send_queue.h>
+#include <utils/allocator.h>
+#include <utils/logger_manager.h>
+
+/**
+ * Private data of a sender object
+ */
+typedef struct private_sender_s private_sender_t;
+
+struct private_sender_s {
+	/**
+	 * Public part of a sender object
+	 */
+	 sender_t public;
+
+	 /**
+	  * Assigned thread to the sender_t object
+	  */
+	 pthread_t assigned_thread;
+	 
+	 /**
+	  * logger for this sender
+	  */
+	 logger_t *logger;
+
+};
+
+/**
+ * Thread function started at creation of the sender object
+ *
+ * @param this assigned sender object
+ * @return SUCCESS if thread_function ended successfully, FAILED otherwise
+ */
+static void sender_thread_function(private_sender_t * this)
+{
+	packet_t * current_packet;
+	status_t status;
+	
+	/* cancellation disabled by default */
+	pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
+
+	while (1)
+	{
+		while (global_send_queue->get(global_send_queue,&current_packet) == SUCCESS)
+		{
+			this->logger->log(this->logger, CONTROL|MORE, "got a packet, sending it");
+			status = global_socket->send(global_socket,current_packet);
+			if (status != SUCCESS)
+			{
+				this->logger->log(this->logger, ERROR, "sending failed, socket returned %s", 
+									mapping_find(status_m, status));
+			}
+			current_packet->destroy(current_packet);
+		}
+	}
+}
+
+/**
+ * Implementation of sender_t's destroy function
+ */
+static status_t destroy(private_sender_t *this)
+{
+	this->logger->log(this->logger, CONTROL | MORE, "Going to terminate sender thread");
+	pthread_cancel(this->assigned_thread);
+
+	pthread_join(this->assigned_thread, NULL);
+	this->logger->log(this->logger, CONTROL | MORE, "Sender thread terminated");	
+	
+	global_logger_manager->destroy_logger(global_logger_manager, this->logger);
+
+	allocator_free(this);
+	return SUCCESS;
+}
+
+
+sender_t * sender_create()
+{
+	private_sender_t *this = allocator_alloc_thing(private_sender_t);
+
+	this->public.destroy = (status_t(*)(sender_t*)) destroy;
+	
+	this->logger = global_logger_manager->create_logger(global_logger_manager, SENDER, NULL);
+	if (this->logger == NULL)
+	{
+		allocator_free(this);
+		return NULL;	
+	}
+	
+	if (pthread_create(&(this->assigned_thread), NULL, (void*(*)(void*))sender_thread_function, this) != 0)
+	{
+		/* thread could not be created  */
+		allocator_free(this);
+		return NULL;
+	}
+
+	return &(this->public);
+}

Source/charon/threads/sender.h

@@ -0,0 +1,47 @@
+/**
+ * @file sender.h
+ *
+ * @brief Implements the Sender Thread encapsulated in the sender_t object
+ *
+ */
+
+/*
+ * Copyright (C) 2005 Jan Hutter, Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#ifndef SENDER_H_
+#define SENDER_H_
+
+#include <types.h>
+
+/**
+ * @brief A Sender object which sends packets on the socket
+ */
+typedef struct sender_s sender_t;
+
+struct sender_s {
+
+	/**
+	 * @brief Destroys a sender object
+	 *
+	 * @param sender sender object
+	 * @return SUCCESSFUL if succeeded, FAILED otherwise
+	 */
+	status_t (*destroy) (sender_t *sender);
+};
+
+
+sender_t * sender_create();
+
+#endif /*SENDER_H_*/

Source/charon/threads/thread_pool.c

@@ -0,0 +1,378 @@
+/**
+ * @file thread_pool.c
+ * 
+ * @brief Thread pool with some threads processing the job_queue.
+ * 
+ */
+
+/*
+ * Copyright (C) 2005 Jan Hutter, Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+ 
+#include <stdlib.h>
+#include <pthread.h>
+#include <string.h>
+#include <errno.h>
+
+#include "thread_pool.h"
+ 
+#include <globals.h>
+#include <queues/job_queue.h>
+#include <queues/jobs/delete_ike_sa_job.h>
+#include <queues/jobs/incoming_packet_job.h>
+#include <queues/jobs/initiate_ike_sa_job.h>
+#include <utils/allocator.h>
+#include <utils/logger.h>
+
+/**
+ * @brief structure with private members for thread_pool_t
+ */
+typedef struct private_thread_pool_s private_thread_pool_t;
+
+struct private_thread_pool_s {
+	/**
+	 * inclusion of public members
+	 */
+	thread_pool_t public;
+	/**
+	 * @brief Processing function of a worker thread
+	 * 
+	 * @param this	private_thread_pool_t-Object
+	 */
+	void (*function) (private_thread_pool_t *this);
+	/**
+	 * number of running threads
+	 */
+	 size_t pool_size;
+	/**
+	 * array of thread ids
+	 */
+	pthread_t *threads;
+	/**
+	 * logger of the threadpool
+	 */
+	logger_t *pool_logger;
+	/**
+	 * logger of the threadpool
+	 */
+	logger_t *worker_logger;
+} ;
+
+
+
+/**
+ * implements private_thread_pool_t.function
+ */
+static void job_processing(private_thread_pool_t *this)
+{
+
+	/* cancellation disabled by default */
+	pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
+	this->worker_logger->log(this->worker_logger, CONTROL, "started working");
+
+	for (;;) {
+		job_t *job;
+		job_type_t job_type;
+		
+		global_job_queue->get(global_job_queue, &job);
+		job_type = job->get_type(job);
+		this->worker_logger->log(this->worker_logger, CONTROL|MORE, "got a job of type %s", mapping_find(job_type_m,job_type));
+		
+		/* process them here */
+		switch (job_type)
+		{
+			case INCOMING_PACKET:
+			{
+				packet_t 	*packet;
+				message_t 	*message;
+				ike_sa_t 	*ike_sa;
+				ike_sa_id_t *ike_sa_id;
+				status_t 	status;
+				incoming_packet_job_t *incoming_packet_job = (incoming_packet_job_t *)job;
+				
+				
+				if (incoming_packet_job->get_packet(incoming_packet_job,&packet) != SUCCESS)
+				{
+					this->worker_logger->log(this->worker_logger, ERROR, "packet in job %s could not be retrieved!",
+										mapping_find(job_type_m,job_type));				
+					break;
+				}
+				
+				message = message_create_from_packet(packet);
+				if (message == NULL)
+				{
+					this->worker_logger->log(this->worker_logger, ERROR, "message could not be created from packet!", 
+										mapping_find(job_type_m,job_type));				
+					packet->destroy(packet);
+					break;					
+				}
+
+				status = message->parse_header(message);
+				if (status != SUCCESS)
+				{
+					this->worker_logger->log(this->worker_logger, ERROR, "message header could not be verified!");				
+					message->destroy(message);
+					break;										
+				}
+				
+				this->worker_logger->log(this->worker_logger, CONTROL|MOST, "message is a %s %s", 
+									mapping_find(exchange_type_m, message->get_exchange_type(message)),
+									message->get_request(message) ? "request" : "reply");
+				
+				if ((message->get_major_version(message) != IKE_MAJOR_VERSION) || 
+					(message->get_minor_version(message) != IKE_MINOR_VERSION))
+				{
+					this->worker_logger->log(this->worker_logger, ERROR, "IKE version %d.%d not supported", 
+												message->get_major_version(message),
+												message->get_minor_version(message));	
+					/* Todo send notify */
+				}
+				
+				status = message->get_ike_sa_id(message, &ike_sa_id);
+				if (status != SUCCESS)
+				{
+					this->worker_logger->log(this->worker_logger, ERROR, "IKE SA ID of message could not be created!");
+					message->destroy(message);
+					break;
+				}
+			
+				ike_sa_id->switch_initiator(ike_sa_id);
+				
+				this->worker_logger->log(this->worker_logger, CONTROL|MOST, "checking out IKE SA %lld:%lld, role %s", 
+									ike_sa_id->get_initiator_spi(ike_sa_id),
+									ike_sa_id->get_responder_spi(ike_sa_id),
+									ike_sa_id->is_initiator(ike_sa_id) ? "initiator" : "responder");
+				
+				status = global_ike_sa_manager->checkout(global_ike_sa_manager,ike_sa_id, &ike_sa);
+				if (status != SUCCESS)
+				{
+					this->worker_logger->log(this->worker_logger, ERROR, "IKE SA could not be checked out");
+					ike_sa_id->destroy(ike_sa_id);	
+					message->destroy(message);
+					break;
+				}
+				
+				status = ike_sa->process_message(ike_sa, message);				
+				if (status != SUCCESS)
+				{
+					this->worker_logger->log(this->worker_logger, ERROR, "message could not be processed by IKE SA");
+				}
+				
+				this->worker_logger->log(this->worker_logger, CONTROL|MOST, "checking in IKE SA %lld:%lld, role %s", 
+									ike_sa_id->get_initiator_spi(ike_sa_id),
+									ike_sa_id->get_responder_spi(ike_sa_id),
+									ike_sa_id->is_initiator(ike_sa_id) ? "initiator" : "responder");
+				ike_sa_id->destroy(ike_sa_id);
+									
+				status = global_ike_sa_manager->checkin(global_ike_sa_manager, ike_sa);
+				if (status != SUCCESS)
+				{
+					this->worker_logger->log(this->worker_logger, ERROR, "checkin of IKE SA failed");
+				}
+				message->destroy(message);
+				break;
+			}
+			case INITIATE_IKE_SA:
+			{
+				/*
+				 * Initiatie an IKE_SA:
+				 * - is defined by a name of a configuration
+				 * - create an empty IKE_SA via manager
+				 * - call initiate_connection on this sa
+				 */
+				initiate_ike_sa_job_t *initiate_job;
+				ike_sa_id_t *ike_sa_id;
+				ike_sa_t *ike_sa;
+				status_t status;
+				
+				initiate_job = (initiate_ike_sa_job_t *)job;			
+				
+				ike_sa_id = ike_sa_id_create(0, 0, TRUE);
+				if (ike_sa_id == NULL)
+				{
+					this->worker_logger->log(this->worker_logger, ERROR, "%s by creating ike_sa_id_t, job rejected.", 
+										mapping_find(status_m, status));
+					break;
+				}
+				
+				this->worker_logger->log(this->worker_logger, CONTROL|MOST, "checking out IKE SA %lld:%lld, role %s", 
+									ike_sa_id->get_initiator_spi(ike_sa_id),
+									ike_sa_id->get_responder_spi(ike_sa_id),
+									ike_sa_id->is_initiator(ike_sa_id) ? "initiator" : "responder");
+				
+				status = global_ike_sa_manager->checkout(global_ike_sa_manager, ike_sa_id, &ike_sa);
+				ike_sa_id->destroy(ike_sa_id);
+				if (status != SUCCESS)
+				{
+					this->worker_logger->log(this->worker_logger, ERROR, "%s by checking out new IKE_SA, job rejected.", 
+										mapping_find(status_m, status));
+					break;
+				}
+				
+				
+				this->worker_logger->log(this->worker_logger, CONTROL|MOST, "initializing connection \"%s\"", 
+									initiate_job->get_configuration_name(initiate_job));
+				status = ike_sa->initialize_connection(ike_sa, initiate_job->get_configuration_name(initiate_job));
+				if (status != SUCCESS)
+				{
+					this->worker_logger->log(this->worker_logger, ERROR, "%s by initialize_conection, job and rejected, IKE_SA deleted.", 
+										mapping_find(status_m, status));
+					global_ike_sa_manager->checkin_and_delete(global_ike_sa_manager, ike_sa);
+					break;
+				}
+				
+				this->worker_logger->log(this->worker_logger, CONTROL|MOST, "checking in IKE SA");
+				status = global_ike_sa_manager->checkin(global_ike_sa_manager, ike_sa);
+				if (status != SUCCESS)
+				{
+					this->worker_logger->log(this->worker_logger, ERROR, "%s could not checkin IKE_SA.", 
+										mapping_find(status_m, status));
+				}
+				break;
+			}
+			case RETRANSMIT_REQUEST:
+			{
+				this->worker_logger->log(this->worker_logger, ERROR, "job of type %s not supported!", mapping_find(job_type_m,job_type));				
+				break;
+			}
+			
+			case DELETE_IKE_SA:
+			{
+				delete_ike_sa_job_t *delete_ike_sa_job = (delete_ike_sa_job_t*) job;
+				ike_sa_id_t *ike_sa_id = delete_ike_sa_job->get_ike_sa_id(delete_ike_sa_job);
+				status_t status;
+								
+				
+				this->worker_logger->log(this->worker_logger, CONTROL|MOST, "deleting IKE SA %lld:%lld, role %s", 
+									ike_sa_id->get_initiator_spi(ike_sa_id),
+									ike_sa_id->get_responder_spi(ike_sa_id),
+									ike_sa_id->is_initiator(ike_sa_id) ? "initiator" : "responder");
+									
+				status = global_ike_sa_manager->delete(global_ike_sa_manager, ike_sa_id);
+				if (status != SUCCESS)
+				{
+					this->worker_logger->log(this->worker_logger, ERROR, "could not delete IKE_SA (%s)", 
+										mapping_find(status_m, status));
+				}
+				break;
+				
+			}
+		}
+		job->destroy(job);
+	}
+
+}
+
+/**
+ * implementation of thread_pool_t.get_pool_size
+ */
+static size_t get_pool_size(private_thread_pool_t *this)
+{
+	return this->pool_size;
+}
+
+/**
+ * Implementation of thread_pool_t.destroy
+ */
+static status_t destroy(private_thread_pool_t *this)
+{	
+	int current;
+	/* flag thread for termination */
+	for (current = 0; current < this->pool_size; current++) {
+		this->pool_logger->log(this->pool_logger, CONTROL, "cancelling thread %u", this->threads[current]);
+		pthread_cancel(this->threads[current]);
+	}
+	
+	/* wait for all threads */
+	for (current = 0; current < this->pool_size; current++) {
+		pthread_join(this->threads[current], NULL);
+		this->pool_logger->log(this->pool_logger, CONTROL, "thread %u terminated", this->threads[current]);
+	}	
+
+	/* free mem */
+	global_logger_manager->destroy_logger(global_logger_manager, this->pool_logger);
+	global_logger_manager->destroy_logger(global_logger_manager, this->worker_logger);
+	allocator_free(this->threads);
+	allocator_free(this);
+	return SUCCESS;
+}
+
+#include <stdio.h>
+
+/*
+ * see header
+ */
+thread_pool_t *thread_pool_create(size_t pool_size)
+{
+	int current;
+	
+	private_thread_pool_t *this = allocator_alloc_thing(private_thread_pool_t);
+	
+	/* fill in public fields */
+	this->public.destroy = (status_t(*)(thread_pool_t*))destroy;
+	this->public.get_pool_size = (size_t(*)(thread_pool_t*))get_pool_size;
+	
+	this->function = job_processing;
+	this->pool_size = pool_size;
+	
+	this->threads = allocator_alloc(sizeof(pthread_t) * pool_size);
+	if (this->threads == NULL)
+	{
+		allocator_free(this);
+		return NULL;
+	}	
+	this->pool_logger = global_logger_manager->create_logger(global_logger_manager,THREAD_POOL,NULL);
+	if (this->threads == NULL)
+	{
+		allocator_free(this);
+		allocator_free(this->threads);
+		return NULL;
+	}	
+	this->worker_logger = global_logger_manager->create_logger(global_logger_manager,WORKER,NULL);
+	if (this->threads == NULL)
+	{
+		global_logger_manager->destroy_logger(global_logger_manager, this->pool_logger);
+		allocator_free(this);
+		allocator_free(this->threads);
+		return NULL;
+	}	
+	
+	/* try to create as many threads as possible, up tu pool_size */
+	for (current = 0; current < pool_size; current++) 
+	{
+		if (pthread_create(&(this->threads[current]), NULL, (void*(*)(void*))this->function, this) == 0) 
+		{
+			this->pool_logger->log(this->pool_logger, CONTROL, "thread %u created", this->threads[current]);
+		}
+		else 
+		{
+			/* creation failed, is it the first one? */	
+			if (current == 0) 
+			{
+				this->pool_logger->log(this->pool_logger, ERROR, "could not create any thread: %s\n", strerror(errno));
+				global_logger_manager->destroy_logger(global_logger_manager, this->pool_logger);
+				global_logger_manager->destroy_logger(global_logger_manager, this->worker_logger);
+				allocator_free(this->threads);
+				allocator_free(this);
+				return NULL;
+			}
+			/* not all threads could be created, but at least one :-/ */
+			this->pool_logger->log(this->pool_logger, CONTROL, "could only create %d from requested %d threads: %s\n", current, pool_size, strerror(errno));
+				
+			this->pool_size = current;
+			return (thread_pool_t*)this;
+		}
+	}	
+	return (thread_pool_t*)this;
+}

Source/charon/threads/thread_pool.h

@@ -0,0 +1,69 @@
+/**
+ * @file thread_pool.h
+ * 
+ * @brief Thread pool with some threads processing the job_queue
+ * 
+ */
+
+/*
+ * Copyright (C) 2005 Jan Hutter, Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#ifndef THREAD_POOL_H_
+#define THREAD_POOL_H_
+
+#include <stdlib.h>
+
+#include <types.h>
+
+/**
+ * @brief A thread_pool contains a pool of threads processing the job queue.
+ * 
+ * Current implementation uses as many threads as specified in constructor.
+ * A more improved version would dynamically increase thread count if necessary...
+ */
+typedef struct thread_pool_s thread_pool_t;
+
+struct thread_pool_s {
+	/**
+	 * @brief return currently instanciated threads
+	 * 
+	 * @param thread_pool	thread_pool_t object		
+	 * @return				size of thread pool
+	 */
+	size_t (*get_pool_size) (thread_pool_t *thread_pool);
+	/**
+	 * @brief destroy pool
+	 * 
+	 * sends cancellation request to all threads and AWAITS their termination.
+	 * 
+	 * @param thread_pool	thread_pool_t object
+	 * @return				
+	 * 						- SUCCESS in any case
+	 */
+	status_t (*destroy) (thread_pool_t *thread_pool);
+};
+
+/**
+ * @brief Create the thread pool using using pool_size of threads
+ *  
+ * @param pool_size			desired pool size
+ * @return 					
+ * 							- NULL if no threads could be created
+ * 							- thread_pool if one ore more threads could be instanciated
+ */
+thread_pool_t *thread_pool_create(size_t pool_size);
+
+
+#endif /*THREAD_POOL_H_*/