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-rw-r--r--src/charon/control/controller.c566
1 files changed, 566 insertions, 0 deletions
diff --git a/src/charon/control/controller.c b/src/charon/control/controller.c
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+/*
+ * Copyright (C) 2007 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.
+ *
+ * $Id: controller.c 3820 2008-04-17 11:22:37Z martin $
+ */
+
+#include "controller.h"
+
+#include <sys/types.h>
+#include <dirent.h>
+#include <sys/stat.h>
+#include <dlfcn.h>
+
+#include <daemon.h>
+#include <library.h>
+
+
+typedef struct private_controller_t private_controller_t;
+typedef struct interface_bus_listener_t interface_bus_listener_t;
+
+/**
+ * Private data of an stroke_t object.
+ */
+struct private_controller_t {
+
+ /**
+ * Public part of stroke_t object.
+ */
+ controller_t public;
+};
+
+
+/**
+ * helper struct to map bus listener callbacks to interface callbacks
+ */
+struct interface_bus_listener_t {
+
+ /**
+ * public bus listener interface
+ */
+ bus_listener_t public;
+
+ /**
+ * status of the operation, return to method callers
+ */
+ status_t status;
+
+ /**
+ * IKE SA to filter log output
+ */
+ ike_sa_t *ike_sa;
+
+ /**
+ * interface callback (listener gets redirected to here)
+ */
+ controller_cb_t callback;
+
+ /**
+ * user parameter to pass to callback
+ */
+ void *param;
+
+ /**
+ * child configuration, used for initiate
+ */
+ child_cfg_t *child_cfg;
+
+ /**
+ * peer configuration, used for initiate
+ */
+ peer_cfg_t *peer_cfg;
+
+ /**
+ * unique ID, used for various methods
+ */
+ u_int32_t id;
+};
+
+
+typedef struct interface_job_t interface_job_t;
+
+/**
+ * job for asynchronous listen operations
+ */
+struct interface_job_t {
+ /**
+ * job interface
+ */
+ job_t public;
+
+ /**
+ * associated listener
+ */
+ interface_bus_listener_t listener;
+};
+
+/**
+ * Implementation of controller_t.create_ike_sa_iterator.
+ */
+static enumerator_t* create_ike_sa_enumerator(controller_t *this)
+{
+ return charon->ike_sa_manager->create_enumerator(charon->ike_sa_manager);
+}
+
+/**
+ * listener function for initiate
+ */
+static bool initiate_listener(interface_bus_listener_t *this, signal_t signal,
+ level_t level, int thread, ike_sa_t *ike_sa,
+ char* format, va_list args)
+{
+ if (this->ike_sa == ike_sa)
+ {
+ if (!this->callback(this->param, signal, level, ike_sa, format, args))
+ {
+ return FALSE;
+ }
+ switch (signal)
+ {
+ case CHILD_UP_SUCCESS:
+ this->status = SUCCESS;
+ return FALSE;
+ case IKE_UP_FAILED:
+ case CHILD_UP_FAILED:
+ return FALSE;
+ default:
+ break;
+ }
+ }
+ return TRUE;
+}
+
+/**
+ * execute function for initiate
+ */
+static status_t initiate_execute(interface_job_t *job)
+{
+ ike_sa_t *ike_sa;
+ interface_bus_listener_t *listener = &job->listener;
+ peer_cfg_t *peer_cfg = listener->peer_cfg;
+
+ ike_sa = charon->ike_sa_manager->checkout_by_config(charon->ike_sa_manager,
+ peer_cfg);
+ listener->ike_sa = ike_sa;
+
+ if (ike_sa->get_peer_cfg(ike_sa) == NULL)
+ {
+ ike_sa->set_peer_cfg(ike_sa, peer_cfg);
+ }
+ peer_cfg->destroy(peer_cfg);
+
+ if (ike_sa->initiate(ike_sa, listener->child_cfg) != SUCCESS)
+ {
+ return charon->ike_sa_manager->checkin_and_destroy(
+ charon->ike_sa_manager, ike_sa);
+ }
+ return charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa);
+}
+
+/**
+ * Implementation of controller_t.initiate.
+ */
+static status_t initiate(private_controller_t *this,
+ peer_cfg_t *peer_cfg, child_cfg_t *child_cfg,
+ controller_cb_t callback, void *param)
+{
+ interface_job_t job;
+
+ job.listener.public.signal = (void*)initiate_listener;
+ job.listener.ike_sa = NULL;
+ job.listener.callback = callback;
+ job.listener.param = param;
+ job.listener.status = FAILED;
+ job.listener.child_cfg = child_cfg;
+ job.listener.peer_cfg = peer_cfg;
+ job.public.execute = (void*)initiate_execute;
+ job.public.destroy = nop;
+
+ if (callback == NULL)
+ {
+ return initiate_execute(&job);
+ }
+ charon->bus->listen(charon->bus, (bus_listener_t*)&job.listener, (job_t*)&job);
+ return job.listener.status;
+}
+
+/**
+ * listener function for terminate_ike
+ */
+static bool terminate_ike_listener(interface_bus_listener_t *this, signal_t signal,
+ level_t level, int thread, ike_sa_t *ike_sa,
+ char* format, va_list args)
+{
+ if (this->ike_sa == ike_sa)
+ {
+ if (!this->callback(this->param, signal, level, ike_sa, format, args))
+ {
+ return FALSE;
+ }
+ switch (signal)
+ {
+ case IKE_DOWN_SUCCESS:
+ this->status = SUCCESS;
+ return FALSE;
+ case IKE_DOWN_FAILED:
+ return FALSE;
+ default:
+ break;
+ }
+ }
+ return TRUE;
+}
+
+/**
+ * execute function for terminate_ike
+ */
+static status_t terminate_ike_execute(interface_job_t *job)
+{
+ ike_sa_t *ike_sa;
+ interface_bus_listener_t *listener = &job->listener;
+
+ ike_sa = charon->ike_sa_manager->checkout_by_id(charon->ike_sa_manager,
+ listener->id, FALSE);
+ if (ike_sa == NULL)
+ {
+ SIG(IKE_DOWN_FAILED, "unable to terminate, IKE_SA with "
+ "ID %d not found", listener->id);
+ return NOT_FOUND;
+ }
+ listener->ike_sa = ike_sa;
+
+ if (ike_sa->delete(ike_sa) == DESTROY_ME)
+ {
+ return charon->ike_sa_manager->checkin_and_destroy(
+ charon->ike_sa_manager, ike_sa);
+ }
+ return charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa);
+}
+
+/**
+ * Implementation of controller_t.terminate_ike.
+ */
+static status_t terminate_ike(controller_t *this, u_int32_t unique_id,
+ controller_cb_t callback, void *param)
+{
+ interface_job_t job;
+
+ job.listener.public.signal = (void*)terminate_ike_listener;
+ job.listener.ike_sa = NULL;
+ job.listener.callback = callback;
+ job.listener.param = param;
+ job.listener.status = FAILED;
+ job.listener.id = unique_id;
+ job.public.execute = (void*)terminate_ike_execute;
+ job.public.destroy = nop;
+
+ if (callback == NULL)
+ {
+ return terminate_ike_execute(&job);
+ }
+ charon->bus->listen(charon->bus, (bus_listener_t*)&job.listener, (job_t*)&job);
+ return job.listener.status;
+}
+/**
+ * listener function for terminate_child
+ */
+static bool terminate_child_listener(interface_bus_listener_t *this, signal_t signal,
+ level_t level, int thread, ike_sa_t *ike_sa,
+ char* format, va_list args)
+{
+ if (this->ike_sa == ike_sa)
+ {
+ if (!this->callback(this->param, signal, level, ike_sa, format, args))
+ {
+ return FALSE;
+ }
+ switch (signal)
+ {
+ case CHILD_DOWN_SUCCESS:
+ case IKE_DOWN_SUCCESS:
+ this->status = SUCCESS;
+ return FALSE;
+ case IKE_DOWN_FAILED:
+ case CHILD_DOWN_FAILED:
+ return FALSE;
+ default:
+ break;
+ }
+ }
+ return TRUE;
+}
+
+/**
+ * execute function for terminate_child
+ */
+static status_t terminate_child_execute(interface_job_t *job)
+{
+ ike_sa_t *ike_sa;
+ child_sa_t *child_sa;
+ iterator_t *iterator;
+ interface_bus_listener_t *listener = &job->listener;
+
+ ike_sa = charon->ike_sa_manager->checkout_by_id(charon->ike_sa_manager,
+ listener->id, TRUE);
+ if (ike_sa == NULL)
+ {
+ SIG(CHILD_DOWN_FAILED, "unable to terminate, CHILD_SA with "
+ "ID %d not found", listener->id);
+ return NOT_FOUND;
+ }
+ listener->ike_sa = ike_sa;
+
+ iterator = ike_sa->create_child_sa_iterator(ike_sa);
+ while (iterator->iterate(iterator, (void**)&child_sa))
+ {
+ if (child_sa->get_state(child_sa) != CHILD_ROUTED &&
+ child_sa->get_reqid(child_sa) == listener->id)
+ {
+ break;
+ }
+ child_sa = NULL;
+ }
+ iterator->destroy(iterator);
+
+ if (child_sa == NULL)
+ {
+ SIG(CHILD_DOWN_FAILED, "unable to terminate, established CHILD_SA with "
+ "ID %d not found", listener->id);
+ charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa);
+ return NOT_FOUND;
+ }
+
+ if (ike_sa->delete_child_sa(ike_sa, child_sa->get_protocol(child_sa),
+ child_sa->get_spi(child_sa, TRUE)) == DESTROY_ME)
+ {
+ return charon->ike_sa_manager->checkin_and_destroy(
+ charon->ike_sa_manager, ike_sa);
+ }
+ return charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa);
+}
+
+/**
+ * Implementation of controller_t.terminate_child.
+ */
+static status_t terminate_child(controller_t *this, u_int32_t reqid,
+ controller_cb_t callback, void *param)
+{
+ interface_job_t job;
+
+ job.listener.public.signal = (void*)terminate_child_listener;
+ job.listener.ike_sa = NULL;
+ job.listener.callback = callback;
+ job.listener.param = param;
+ job.listener.status = FAILED;
+ job.listener.id = reqid;
+ job.public.execute = (void*)terminate_child_execute;
+ job.public.destroy = nop;
+
+ if (callback == NULL)
+ {
+ return terminate_child_execute(&job);
+ }
+ charon->bus->listen(charon->bus, (bus_listener_t*)&job.listener, (job_t*)&job);
+ return job.listener.status;
+}
+
+/**
+ * listener function for route
+ */
+static bool route_listener(interface_bus_listener_t *this, signal_t signal,
+ level_t level, int thread, ike_sa_t *ike_sa,
+ char* format, va_list args)
+{
+ if (this->ike_sa == ike_sa)
+ {
+ if (!this->callback(this->param, signal, level, ike_sa, format, args))
+ {
+ return FALSE;
+ }
+ switch (signal)
+ {
+ case CHILD_ROUTE_SUCCESS:
+ this->status = SUCCESS;
+ return FALSE;
+ case CHILD_ROUTE_FAILED:
+ return FALSE;
+ default:
+ break;
+ }
+ }
+ return TRUE;
+}
+
+/**
+ * execute function for route
+ */
+static status_t route_execute(interface_job_t *job)
+{
+ ike_sa_t *ike_sa;
+ interface_bus_listener_t *listener = &job->listener;
+ peer_cfg_t *peer_cfg = listener->peer_cfg;
+ ike_sa = charon->ike_sa_manager->checkout_by_config(charon->ike_sa_manager,
+ peer_cfg);
+ listener->ike_sa = ike_sa;
+
+ if (ike_sa->get_peer_cfg(ike_sa) == NULL)
+ {
+ ike_sa->set_peer_cfg(ike_sa, peer_cfg);
+ }
+ if (ike_sa->route(ike_sa, listener->child_cfg) == DESTROY_ME)
+ {
+ return charon->ike_sa_manager->checkin_and_destroy(
+ charon->ike_sa_manager, ike_sa);
+ }
+ return charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa);
+}
+
+/**
+ * Implementation of controller_t.route.
+ */
+static status_t route(controller_t *this,
+ peer_cfg_t *peer_cfg, child_cfg_t *child_cfg,
+ controller_cb_t callback, void *param)
+{
+ interface_job_t job;
+
+ job.listener.public.signal = (void*)route_listener;
+ job.listener.ike_sa = NULL;
+ job.listener.callback = callback;
+ job.listener.param = param;
+ job.listener.status = FAILED;
+ job.listener.peer_cfg = peer_cfg;
+ job.listener.child_cfg = child_cfg;
+ job.public.execute = (void*)route_execute;
+ job.public.destroy = nop;
+
+ if (callback == NULL)
+ {
+ return route_execute(&job);
+ }
+ charon->bus->listen(charon->bus, (bus_listener_t*)&job.listener, (job_t*)&job);
+ return job.listener.status;
+}
+
+/**
+ * listener function for unroute
+ */
+static bool unroute_listener(interface_bus_listener_t *this, signal_t signal,
+ level_t level, int thread, ike_sa_t *ike_sa,
+ char* format, va_list args)
+{
+ if (this->ike_sa == ike_sa)
+ {
+ if (!this->callback(this->param, signal, level, ike_sa, format, args))
+ {
+ return FALSE;
+ }
+ switch (signal)
+ {
+ case CHILD_UNROUTE_SUCCESS:
+ this->status = SUCCESS;
+ return FALSE;
+ case CHILD_UNROUTE_FAILED:
+ return FALSE;
+ default:
+ break;
+ }
+ }
+ return TRUE;
+}
+/**
+ * execute function for unroute
+ */
+static status_t unroute_execute(interface_job_t *job)
+{
+ ike_sa_t *ike_sa;
+ interface_bus_listener_t *listener = &job->listener;
+
+ ike_sa = charon->ike_sa_manager->checkout_by_id(charon->ike_sa_manager,
+ listener->id, TRUE);
+ if (ike_sa == NULL)
+ {
+ SIG(CHILD_DOWN_FAILED, "unable to unroute, CHILD_SA with "
+ "ID %d not found", listener->id);
+ return NOT_FOUND;
+ }
+ listener->ike_sa = ike_sa;
+ if (ike_sa->unroute(ike_sa, listener->id) == DESTROY_ME)
+ {
+ return charon->ike_sa_manager->checkin_and_destroy(
+ charon->ike_sa_manager, ike_sa);
+ }
+ return charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa);
+}
+
+/**
+ * Implementation of controller_t.unroute.
+ */
+static status_t unroute(controller_t *this, u_int32_t reqid,
+ controller_cb_t callback, void *param)
+{
+ interface_job_t job;
+
+ job.listener.public.signal = (void*)unroute_listener;
+ job.listener.ike_sa = NULL;
+ job.listener.callback = callback;
+ job.listener.param = param;
+ job.listener.status = FAILED;
+ job.listener.id = reqid;
+ job.public.execute = (void*)unroute_execute;
+ job.public.destroy = nop;
+
+ if (callback == NULL)
+ {
+ return unroute_execute(&job);
+ }
+ charon->bus->listen(charon->bus, (bus_listener_t*)&job.listener, (job_t*)&job);
+ return job.listener.status;
+}
+
+/**
+ * See header
+ */
+bool controller_cb_empty(void *param, signal_t signal, level_t level,
+ ike_sa_t *ike_sa, char *format, va_list args)
+{
+ return TRUE;
+}
+
+/**
+ * Implementation of stroke_t.destroy.
+ */
+static void destroy(private_controller_t *this)
+{
+ free(this);
+}
+
+/*
+ * Described in header-file
+ */
+controller_t *controller_create(void)
+{
+ private_controller_t *this = malloc_thing(private_controller_t);
+
+ this->public.create_ike_sa_enumerator = (enumerator_t*(*)(controller_t*))create_ike_sa_enumerator;
+ this->public.initiate = (status_t(*)(controller_t*,peer_cfg_t*,child_cfg_t*,bool(*)(void*,signal_t,level_t,ike_sa_t*,char*,va_list),void*))initiate;
+ this->public.terminate_ike = (status_t(*)(controller_t*,u_int32_t,controller_cb_t, void*))terminate_ike;
+ this->public.terminate_child = (status_t(*)(controller_t*,u_int32_t,controller_cb_t, void *param))terminate_child;
+ this->public.route = (status_t(*)(controller_t*,peer_cfg_t*, child_cfg_t*,controller_cb_t,void*))route;
+ this->public.unroute = (status_t(*)(controller_t*,u_int32_t,controller_cb_t,void*))unroute;
+ this->public.destroy = (void (*)(controller_t*))destroy;
+
+ return &this->public;
+}
+
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