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 /*
  * Copyright (C) 2006-2008 Tobias Brunner
  * Copyright (C) 2006 Daniel Roethlisberger
  * Copyright (C) 2005-2009 Martin Willi
  * Copyright (C) 2005 Jan Hutter
  * 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 <string.h>
 #include <sys/stat.h>
 #include <errno.h>
 #include <time.h>
 #include "ike_sa.h"
 #include <library.h>
 #include <daemon.h>
 #include <utils/linked_list.h>
 #include <utils/lexparser.h>
 #include <sa/task_manager.h>
 #include <sa/tasks/ike_init.h>
 #include <sa/tasks/ike_natd.h>
 #include <sa/tasks/ike_mobike.h>
 #include <sa/tasks/ike_auth.h>
 #include <sa/tasks/ike_auth_lifetime.h>
 #include <sa/tasks/ike_config.h>
 #include <sa/tasks/ike_cert_pre.h>
 #include <sa/tasks/ike_cert_post.h>
 #include <sa/tasks/ike_rekey.h>
 #include <sa/tasks/ike_reauth.h>
 #include <sa/tasks/ike_delete.h>
 #include <sa/tasks/ike_dpd.h>
 #include <sa/tasks/child_create.h>
 #include <sa/tasks/child_delete.h>
 #include <sa/tasks/child_rekey.h>
 #include <processing/jobs/retransmit_job.h>
 #include <processing/jobs/delete_ike_sa_job.h>
 #include <processing/jobs/send_dpd_job.h>
 #include <processing/jobs/send_keepalive_job.h>
 #include <processing/jobs/rekey_ike_sa_job.h>
 #ifdef ME
 #include <sa/tasks/ike_me.h>
 #include <processing/jobs/initiate_mediation_job.h>
 #endif
 ENUM(ike_sa_state_names, IKE_CREATED, IKE_DESTROYING,
     "CREATED",
     "CONNECTING",
     "ESTABLISHED",
     "PASSIVE",
     "REKEYING",
     "DELETING",
     "DESTROYING",
 );
 typedef struct private_ike_sa_t private_ike_sa_t;
 typedef struct attribute_entry_t attribute_entry_t;
 /**
  * Private data of an ike_sa_t object.
  */
 struct private_ike_sa_t {
     /**
      * Public members
      */
     ike_sa_t public;
     /**
      * Identifier for the current IKE_SA.
      */
     ike_sa_id_t *ike_sa_id;
     /**
      * unique numerical ID for this IKE_SA.
      */
     u_int32_t unique_id;
     /**
      * Current state of the IKE_SA
      */
     ike_sa_state_t state;
     /**
      * IKE configuration used to set up this IKE_SA
      */
     ike_cfg_t *ike_cfg;
     /**
      * Peer and authentication information to establish IKE_SA.
      */
     peer_cfg_t *peer_cfg;
     /**
      * currently used authentication ruleset, local (as auth_cfg_t)
      */
     auth_cfg_t *my_auth;
     /**
      * currently used authentication constraints, remote (as auth_cfg_t)
      */
     auth_cfg_t *other_auth;
     /**
      * Selected IKE proposal
      */
     proposal_t *proposal;
     /**
      * Juggles tasks to process messages
      */
     task_manager_t *task_manager;
     /**
      * Address of local host
      */
     host_t *my_host;
     /**
      * Address of remote host
      */
     host_t *other_host;
 #ifdef ME
     /**
      * Are we mediation server
      */
     bool is_mediation_server;
     /**
      * Server reflexive host
      */
     host_t *server_reflexive_host;
     /**
      * Connect ID
      */
     chunk_t connect_id;
 #endif /* ME */
     /**
      * Identification used for us
      */
     identification_t *my_id;
     /**
      * Identification used for other
      */
     identification_t *other_id;
     /**
      * EAP Identity exchange in EAP-Identity method
      */
     identification_t *eap_identity;;
     /**
      * set of extensions the peer supports
      */
     ike_extension_t extensions;
     /**
      * set of condition flags currently enabled for this IKE_SA
      */
     ike_condition_t conditions;
     /**
      * Linked List containing the child sa's of the current IKE_SA.
      */
     linked_list_t *child_sas;
     /**
      * keymat of this IKE_SA
      */
     keymat_t *keymat;
     /**
      * Virtual IP on local host, if any
      */
     host_t *my_virtual_ip;
     /**
      * Virtual IP on remote host, if any
      */
     host_t *other_virtual_ip;
     /**
      * List of configuration attributes (attribute_entry_t)
      */
     linked_list_t *attributes;
     /**
      * list of peers additional addresses, transmitted via MOBIKE
      */
     linked_list_t *additional_addresses;
     /**
      * previously value of received DESTINATION_IP hash
      */
     chunk_t nat_detection_dest;
     /**
      * number pending UPDATE_SA_ADDRESS (MOBIKE)
      */
     u_int32_t pending_updates;
     /**
      * NAT keep alive interval
      */
     u_int32_t keepalive_interval;
     /**
      * Timestamps for this IKE_SA
      */
     u_int32_t stats[STAT_MAX];
     /**
      * how many times we have retried so far (keyingtries)
      */
     u_int32_t keyingtry;
     /**
      * local host address to be used for IKE, set via MIGRATE kernel message
      */
     host_t *local_host;
     /**
      * remote host address to be used for IKE, set via MIGRATE kernel message
      */
     host_t *remote_host;
 };
 /**
  * Entry to maintain install configuration attributes during IKE_SA lifetime
  */
 struct attribute_entry_t {
     /** handler used to install this attribute */
     attribute_handler_t *handler;
     /** attribute type */
     configuration_attribute_type_t type;
     /** attribute data */
     chunk_t data;
 };
 /**
  * get the time of the latest traffic processed by the kernel
  */
 static time_t get_use_time(private_ike_sa_t* this, bool inbound)
+{
     enumerator_t *enumerator;
     child_sa_t *child_sa;
     time_t use_time, current;
     if (inbound)
+    {
         use_time = this->stats[STAT_INBOUND];
+    }
     else
+    {
         use_time = this->stats[STAT_OUTBOUND];
+    }
     enumerator = this->child_sas->create_enumerator(this->child_sas);
     while (enumerator->enumerate(enumerator, &child_sa))
+    {
         child_sa->get_usestats(child_sa, inbound, &current, NULL);
         use_time = max(use_time, current);
+    }
     enumerator->destroy(enumerator);
     return use_time;
+}
 /**
  * Implementation of ike_sa_t.get_unique_id
  */
 static u_int32_t get_unique_id(private_ike_sa_t *this)
+{
     return this->unique_id;
+}
 /**
  * Implementation of ike_sa_t.get_name.
  */
 static char *get_name(private_ike_sa_t *this)
+{
     if (this->peer_cfg)
+    {
         return this->peer_cfg->get_name(this->peer_cfg);
+    }
     return "(unnamed)";
+}
 /**
  * Implementation of ike_sa_t.get_statistic.
  */
 static u_int32_t get_statistic(private_ike_sa_t *this, statistic_t kind)
+{
     if (kind < STAT_MAX)
+    {
         return this->stats[kind];
+    }
     return 0;
+}
 /**
  * Implementation of ike_sa_t.get_my_host.
  */
 static host_t *get_my_host(private_ike_sa_t *this)
+{
     return this->my_host;
+}
 /**
  * Implementation of ike_sa_t.set_my_host.
  */
 static void set_my_host(private_ike_sa_t *this, host_t *me)
+{
     DESTROY_IF(this->my_host);
     this->my_host = me;
+}
 /**
  * Implementation of ike_sa_t.get_other_host.
  */
 static host_t *get_other_host(private_ike_sa_t *this)
+{
     return this->other_host;
+}
 /**
  * Implementation of ike_sa_t.set_other_host.
  */
 static void set_other_host(private_ike_sa_t *this, host_t *other)
+{
     DESTROY_IF(this->other_host);
     this->other_host = other;
+}
 /**
  * Implementation of ike_sa_t.get_peer_cfg
  */
 static peer_cfg_t* get_peer_cfg(private_ike_sa_t *this)
+{
     return this->peer_cfg;
+}
 /**
  * Implementation of ike_sa_t.set_peer_cfg
  */
 static void set_peer_cfg(private_ike_sa_t *this, peer_cfg_t *peer_cfg)
+{
     DESTROY_IF(this->peer_cfg);
     peer_cfg->get_ref(peer_cfg);
     this->peer_cfg = peer_cfg;
     if (this->ike_cfg == NULL)
+    {
         this->ike_cfg = peer_cfg->get_ike_cfg(peer_cfg);
         this->ike_cfg->get_ref(this->ike_cfg);
+    }
+}
 /**
  * Implementation of ike_sa_t.get_auth_cfg
  */
 static auth_cfg_t* get_auth_cfg(private_ike_sa_t *this, bool local)
+{
     if (local)
+    {
         return this->my_auth;
+    }
     return this->other_auth;
+}
 /**
  * Implementation of ike_sa_t.get_proposal
  */
 static proposal_t* get_proposal(private_ike_sa_t *this)
+{
     return this->proposal;
+}
 /**
  * Implementation of ike_sa_t.set_proposal
  */
 static void set_proposal(private_ike_sa_t *this, proposal_t *proposal)
+{
     DESTROY_IF(this->proposal);
     this->proposal = proposal->clone(proposal);
+}
 /**
  * Implementation of ike_sa_t.set_message_id
  */
 static void set_message_id(private_ike_sa_t *this, bool initiate, u_int32_t mid)
+{
     if (initiate)
+    {
         this->task_manager->reset(this->task_manager, mid, UINT_MAX);
+    }
     else
+    {
         this->task_manager->reset(this->task_manager, UINT_MAX, mid);
+    }
+}
 /**
  * Implementation of ike_sa_t.send_keepalive
  */
 static void send_keepalive(private_ike_sa_t *this)
+{
     send_keepalive_job_t *job;
     time_t last_out, now, diff;
     if (!(this->conditions & COND_NAT_HERE) || this->keepalive_interval == 0)
     {    /* disable keep alives if we are not NATed anymore */
         return;
+    }
     last_out = get_use_time(this, FALSE);
     now = time_monotonic(NULL);
     diff = now - last_out;
     if (diff >= this->keepalive_interval)
+    {
         packet_t *packet;
         chunk_t data;
         packet = packet_create();
         packet->set_source(packet, this->my_host->clone(this->my_host));
         packet->set_destination(packet, this->other_host->clone(this->other_host));
         data.ptr = malloc(1);
         data.ptr[0] = 0xFF;
         data.len = 1;
         packet->set_data(packet, data);
         DBG1(DBG_IKE, "sending keep alive");
         charon->sender->send(charon->sender, packet);
         diff = 0;
+    }
     job = send_keepalive_job_create(this->ike_sa_id);
     charon->scheduler->schedule_job(charon->scheduler, (job_t*)job,
                                     this->keepalive_interval - diff);
+}
 /**
  * Implementation of ike_sa_t.get_ike_cfg
  */
 static ike_cfg_t *get_ike_cfg(private_ike_sa_t *this)
+{
     return this->ike_cfg;
+}
 /**
  * Implementation of ike_sa_t.set_ike_cfg
  */
 static void set_ike_cfg(private_ike_sa_t *this, ike_cfg_t *ike_cfg)
+{
     ike_cfg->get_ref(ike_cfg);
     this->ike_cfg = ike_cfg;
+}
 /**
  * Implementation of ike_sa_t.enable_extension.
  */
 static void enable_extension(private_ike_sa_t *this, ike_extension_t extension)
+{
     this->extensions |= extension;
+}
 /**
  * Implementation of ike_sa_t.has_extension.
  */
 static bool supports_extension(private_ike_sa_t *this, ike_extension_t extension)
+{
     return (this->extensions & extension) != FALSE;
+}
 /**
  * Implementation of ike_sa_t.has_condition.
  */
 static bool has_condition(private_ike_sa_t *this, ike_condition_t condition)
+{
     return (this->conditions & condition) != FALSE;
+}
 /**
  * Implementation of ike_sa_t.enable_condition.
  */
 static void set_condition(private_ike_sa_t *this, ike_condition_t condition,
                           bool enable)
+{
     if (has_condition(this, condition) != enable)
+    {
         if (enable)
+        {
             this->conditions |= condition;
             switch (condition)
+            {
                 case COND_NAT_HERE:
                     DBG1(DBG_IKE, "local host is behind NAT, sending keep alives");
                     this->conditions |= COND_NAT_ANY;
                     send_keepalive(this);
                     break;
                 case COND_NAT_THERE:
                     DBG1(DBG_IKE, "remote host is behind NAT");
                     this->conditions |= COND_NAT_ANY;
                     break;
                 case COND_NAT_FAKE:
                     DBG1(DBG_IKE, "faking NAT situation to enforce UDP encapsulation");
                     this->conditions |= COND_NAT_ANY;
                     break;
                 default:
                     break;
+            }
+        }
         else
+        {
             this->conditions &= ~condition;
             switch (condition)
+            {
                 case COND_NAT_HERE:
                 case COND_NAT_FAKE:
                 case COND_NAT_THERE:
                     set_condition(this, COND_NAT_ANY,
                                   has_condition(this, COND_NAT_HERE) ||
                                   has_condition(this, COND_NAT_THERE) ||
                                   has_condition(this, COND_NAT_FAKE));
                     break;
                 default:
                     break;
+            }
+        }
+    }
+}
 /**
  * Implementation of ike_sa_t.send_dpd
  */
 static status_t send_dpd(private_ike_sa_t *this)
+{
     job_t *job;
     time_t diff, delay;
     delay = this->peer_cfg->get_dpd(this->peer_cfg);
     if (delay == 0)
+    {
         /* DPD disabled */
         return SUCCESS;
+    }
     if (this->task_manager->busy(this->task_manager))
+    {
         /* an exchange is in the air, no need to start a DPD check */
         diff = 0;
+    }
     else
+    {
         /* check if there was any inbound traffic */
         time_t last_in, now;
         last_in = get_use_time(this, TRUE);
         now = time_monotonic(NULL);
         diff = now - last_in;
         if (diff >= delay)
+        {
             /* to long ago, initiate dead peer detection */
             task_t *task;
             ike_mobike_t *mobike;
             if (supports_extension(this, EXT_MOBIKE) &&
                 has_condition(this, COND_NAT_HERE))
+            {
                 /* use mobike enabled DPD to detect NAT mapping changes */
                 mobike = ike_mobike_create(&this->public, TRUE);
                 mobike->dpd(mobike);
                 task = &mobike->task;
+            }
             else
+            {
                 task = (task_t*)ike_dpd_create(TRUE);
+            }
             diff = 0;
             DBG1(DBG_IKE, "sending DPD request");
             this->task_manager->queue_task(this->task_manager, task);
             this->task_manager->initiate(this->task_manager);
+        }
+    }
     /* recheck in "interval" seconds */
     job = (job_t*)send_dpd_job_create(this->ike_sa_id);
     charon->scheduler->schedule_job(charon->scheduler, job, delay - diff);
     return SUCCESS;
+}
 /**
  * Implementation of ike_sa_t.get_state.
  */
 static ike_sa_state_t get_state(private_ike_sa_t *this)
+{
     return this->state;
+}
 /**
  * Implementation of ike_sa_t.set_state.
  */
 static void set_state(private_ike_sa_t *this, ike_sa_state_t state)
+{
     DBG2(DBG_IKE, "IKE_SA %s[%d] state change: %N => %N",
          get_name(this), this->unique_id,
          ike_sa_state_names, this->state,
          ike_sa_state_names, state);
     switch (state)
+    {
         case IKE_ESTABLISHED:
+        {
             if (this->state == IKE_CONNECTING ||
                 this->state == IKE_PASSIVE)
+            {
                 job_t *job;
                 u_int32_t t;
                 /* calculate rekey, reauth and lifetime */
                 this->stats[STAT_ESTABLISHED] = time_monotonic(NULL);
                 /* schedule rekeying if we have a time which is smaller than
                  * an already scheduled rekeying */
                 t = this->peer_cfg->get_rekey_time(this->peer_cfg);
                 if (t && (this->stats[STAT_REKEY] == 0 ||
                     (this->stats[STAT_REKEY] > t + this->stats[STAT_ESTABLISHED])))
+                {
                     this->stats[STAT_REKEY] = t + this->stats[STAT_ESTABLISHED];
                     job = (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, FALSE);
                     charon->scheduler->schedule_job(charon->scheduler, job, t);
                     DBG1(DBG_IKE, "scheduling rekeying in %ds", t);
+                }
                 t = this->peer_cfg->get_reauth_time(this->peer_cfg);
                 if (t && (this->stats[STAT_REAUTH] == 0 ||
                     (this->stats[STAT_REAUTH] > t + this->stats[STAT_ESTABLISHED])))
+                {
                     this->stats[STAT_REAUTH] = t + this->stats[STAT_ESTABLISHED];
                     job = (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE);
                     charon->scheduler->schedule_job(charon->scheduler, job, t);
                     DBG1(DBG_IKE, "scheduling reauthentication in %ds", t);
+                }
                 t = this->peer_cfg->get_over_time(this->peer_cfg);
                 if (this->stats[STAT_REKEY] || this->stats[STAT_REAUTH])
+                {
                     if (this->stats[STAT_REAUTH] == 0)
+                    {
                         this->stats[STAT_DELETE] = this->stats[STAT_REKEY];
+                    }
                     else if (this->stats[STAT_REKEY] == 0)
+                    {
                         this->stats[STAT_DELETE] = this->stats[STAT_REAUTH];
+                    }
                     else
+                    {
                         this->stats[STAT_DELETE] = min(this->stats[STAT_REKEY],
                                                        this->stats[STAT_REAUTH]);
+                    }
                     this->stats[STAT_DELETE] += t;
                     t = this->stats[STAT_DELETE] - this->stats[STAT_ESTABLISHED];
                     job = (job_t*)delete_ike_sa_job_create(this->ike_sa_id, TRUE);
                     charon->scheduler->schedule_job(charon->scheduler, job, t);
                     DBG1(DBG_IKE, "maximum IKE_SA lifetime %ds", t);
+                }
                 /* start DPD checks */
                 send_dpd(this);
+            }
             break;
+        }
         case IKE_DELETING:
+        {
             /* delete may fail if a packet gets lost, so set a timeout */
             job_t *job = (job_t*)delete_ike_sa_job_create(this->ike_sa_id, TRUE);
             charon->scheduler->schedule_job(charon->scheduler, job,
                                             HALF_OPEN_IKE_SA_TIMEOUT);
             break;
+        }
         default:
             break;
+    }
     charon->bus->ike_state_change(charon->bus, &this->public, state);
     this->state = state;
+}
 /**
  * Implementation of ike_sa_t.reset
  */
 static void reset(private_ike_sa_t *this)
+{
     /*  the responder ID is reset, as peer may choose another one */
     if (this->ike_sa_id->is_initiator(this->ike_sa_id))
+    {
         this->ike_sa_id->set_responder_spi(this->ike_sa_id, 0);
+    }
     set_state(this, IKE_CREATED);
     this->task_manager->reset(this->task_manager, 0, 0);
+}
 /**
  * Implementation of ike_sa_t.get_keymat
  */
 static keymat_t* get_keymat(private_ike_sa_t *this)
+{
     return this->keymat;
+}
 /**
  * Implementation of ike_sa_t.set_virtual_ip
  */
 static void set_virtual_ip(private_ike_sa_t *this, bool local, host_t *ip)
+{
     if (local)
+    {
         DBG1(DBG_IKE, "installing new virtual IP %H", ip);
         if (charon->kernel_interface->add_ip(charon->kernel_interface, ip,
                                              this->my_host) == SUCCESS)
+        {
             if (this->my_virtual_ip)
+            {
                 DBG1(DBG_IKE, "removing old virtual IP %H", this->my_virtual_ip);
                 charon->kernel_interface->del_ip(charon->kernel_interface,
                                                  this->my_virtual_ip);
+            }
             DESTROY_IF(this->my_virtual_ip);
             this->my_virtual_ip = ip->clone(ip);
+        }
         else
+        {
             DBG1(DBG_IKE, "installing virtual IP %H failed", ip);
             this->my_virtual_ip = NULL;
+        }
+    }
     else
+    {
         DESTROY_IF(this->other_virtual_ip);
         this->other_virtual_ip = ip->clone(ip);
+    }
+}
 /**
  * Implementation of ike_sa_t.get_virtual_ip
  */
 static host_t* get_virtual_ip(private_ike_sa_t *this, bool local)
+{
     if (local)
+    {
         return this->my_virtual_ip;
+    }
     else
+    {
         return this->other_virtual_ip;
+    }
+}
 /**
  * Implementation of ike_sa_t.add_additional_address.
  */
 static void add_additional_address(private_ike_sa_t *this, host_t *host)
+{
     this->additional_addresses->insert_last(this->additional_addresses, host);
+}
 /**
  * Implementation of ike_sa_t.create_additional_address_iterator.
  */
 static iterator_t* create_additional_address_iterator(private_ike_sa_t *this)
+{
     return this->additional_addresses->create_iterator(
                                             this->additional_addresses, TRUE);
+}
 /**
  * Implementation of ike_sa_t.has_mapping_changed
  */
 static bool has_mapping_changed(private_ike_sa_t *this, chunk_t hash)
+{
     if (this->nat_detection_dest.ptr == NULL)
+    {
         this->nat_detection_dest = chunk_clone(hash);
         return FALSE;
+    }
     if (chunk_equals(hash, this->nat_detection_dest))
+    {
         return FALSE;
+    }
     free(this->nat_detection_dest.ptr);
     this->nat_detection_dest = chunk_clone(hash);
     return TRUE;
+}
 /**
  * Implementation of ike_sa_t.set_pending_updates.
  */
 static void set_pending_updates(private_ike_sa_t *this, u_int32_t updates)
+{
     this->pending_updates = updates;
+}
 /**
  * Implementation of ike_sa_t.get_pending_updates.
  */
 static u_int32_t get_pending_updates(private_ike_sa_t *this)
+{
     return this->pending_updates;
+}
 /**
  * Update hosts, as addresses may change (NAT)
  */
 static void update_hosts(private_ike_sa_t *this, host_t *me, host_t *other)
+{
     bool update = FALSE;
     if (me == NULL)
+    {
         me = this->my_host;
+    }
     if (other == NULL)
+    {
         other = this->other_host;
+    }
     /* apply hosts on first received message */
     if (this->my_host->is_anyaddr(this->my_host) ||
         this->other_host->is_anyaddr(this->other_host))
+    {
         set_my_host(this, me->clone(me));
         set_other_host(this, other->clone(other));
         update = TRUE;
+    }
     else
+    {
         /* update our address in any case */
         if (!me->equals(me, this->my_host))
+        {
             set_my_host(this, me->clone(me));
             update = TRUE;
+        }
         if (!other->equals(other, this->other_host))
+        {
             /* update others adress if we are NOT NATed,
              * and allow port changes if we are NATed */
             if (!has_condition(this, COND_NAT_HERE) ||
                 other->ip_equals(other, this->other_host))
+            {
                 set_other_host(this, other->clone(other));
                 update = TRUE;
+            }
+        }
+    }
     /* update all associated CHILD_SAs, if required */
     if (update)
+    {
         iterator_t *iterator;
         child_sa_t *child_sa;
         iterator = this->child_sas->create_iterator(this->child_sas, TRUE);
         while (iterator->iterate(iterator, (void**)&child_sa))
+        {
             if (child_sa->update(child_sa, this->my_host,
                         this->other_host, this->my_virtual_ip,
                         has_condition(this, COND_NAT_ANY)) == NOT_SUPPORTED)
+            {
                 this->public.rekey_child_sa(&this->public,
                         child_sa->get_protocol(child_sa),
                         child_sa->get_spi(child_sa, TRUE));
+            }
+        }
         iterator->destroy(iterator);
+    }
+}
 /**
  * Implementation of ike_sa_t.generate
  */
 static status_t generate_message(private_ike_sa_t *this, message_t *message,
                                  packet_t **packet)
+{
     this->stats[STAT_OUTBOUND] = time_monotonic(NULL);
     message->set_ike_sa_id(message, this->ike_sa_id);
     return message->generate(message,
                 this->keymat->get_crypter(this->keymat, FALSE),
                 this->keymat->get_signer(this->keymat, FALSE), packet);
+}
 /**
  * send a notify back to the sender
  */
 static void send_notify_response(private_ike_sa_t *this, message_t *request,
                                  notify_type_t type)
+{
     message_t *response;
     packet_t *packet;
     response = message_create();
     response->set_exchange_type(response, request->get_exchange_type(request));
     response->set_request(response, FALSE);
     response->set_message_id(response, request->get_message_id(request));
     response->add_notify(response, FALSE, type, chunk_empty);
     if (this->my_host->is_anyaddr(this->my_host))
+    {
         this->my_host->destroy(this->my_host);
         this->my_host = request->get_destination(request);
         this->my_host = this->my_host->clone(this->my_host);
+    }
     if (this->other_host->is_anyaddr(this->other_host))
+    {
         this->other_host->destroy(this->other_host);
         this->other_host = request->get_source(request);
         this->other_host = this->other_host->clone(this->other_host);
+    }
     response->set_source(response, this->my_host->clone(this->my_host));
     response->set_destination(response, this->other_host->clone(this->other_host));
     if (generate_message(this, response, &packet) == SUCCESS)
+    {
         charon->sender->send(charon->sender, packet);
+    }
     response->destroy(response);
+}
 /**
  * Implementation of ike_sa_t.set_kmaddress.
  */
 static void set_kmaddress(private_ike_sa_t *this, host_t *local, host_t *remote)
+{
     DESTROY_IF(this->local_host);
     DESTROY_IF(this->remote_host);
     this->local_host = local->clone(local);
     this->remote_host = remote->clone(remote);
+}
 #ifdef ME
 /**
  * Implementation of ike_sa_t.act_as_mediation_server.
  */
 static void act_as_mediation_server(private_ike_sa_t *this)
+{
     charon->mediation_manager->update_sa_id(charon->mediation_manager,
             this->other_id, this->ike_sa_id);
     this->is_mediation_server = TRUE;
+}
 /**
  * Implementation of ike_sa_t.get_server_reflexive_host.
  */
 static host_t *get_server_reflexive_host(private_ike_sa_t *this)
+{
     return this->server_reflexive_host;
+}
 /**
  * Implementation of ike_sa_t.set_server_reflexive_host.
  */
 static void set_server_reflexive_host(private_ike_sa_t *this, host_t *host)
+{
     DESTROY_IF(this->server_reflexive_host);
     this->server_reflexive_host = host;
+}
 /**
  * Implementation of ike_sa_t.get_connect_id.
  */
 static chunk_t get_connect_id(private_ike_sa_t *this)
+{
     return this->connect_id;
+}
 /**
  * Implementation of ike_sa_t.respond
  */
 static status_t respond(private_ike_sa_t *this, identification_t *peer_id,
                         chunk_t connect_id)
+{
     ike_me_t *task = ike_me_create(&this->public, TRUE);
     task->respond(task, peer_id, connect_id);
     this->task_manager->queue_task(this->task_manager, (task_t*)task);
     return this->task_manager->initiate(this->task_manager);
+}
 /**
  * Implementation of ike_sa_t.callback
  */
 static status_t callback(private_ike_sa_t *this, identification_t *peer_id)
+{
     ike_me_t *task = ike_me_create(&this->public, TRUE);
     task->callback(task, peer_id);
     this->task_manager->queue_task(this->task_manager, (task_t*)task);
     return this->task_manager->initiate(this->task_manager);
+}
 /**
  * Implementation of ike_sa_t.relay
  */
 static status_t relay(private_ike_sa_t *this, identification_t *requester,
                       chunk_t connect_id, chunk_t connect_key,
                       linked_list_t *endpoints, bool response)
+{
     ike_me_t *task = ike_me_create(&this->public, TRUE);
     task->relay(task, requester, connect_id, connect_key, endpoints, response);
     this->task_manager->queue_task(this->task_manager, (task_t*)task);
     return this->task_manager->initiate(this->task_manager);
+}
 /**
  * Implementation of ike_sa_t.initiate_mediation
  */
 static status_t initiate_mediation(private_ike_sa_t *this,
                                    peer_cfg_t *mediated_cfg)
+{
     ike_me_t *task = ike_me_create(&this->public, TRUE);
     task->connect(task, mediated_cfg->get_peer_id(mediated_cfg));
     this->task_manager->queue_task(this->task_manager, (task_t*)task);
     return this->task_manager->initiate(this->task_manager);
+}
 /**
  * Implementation of ike_sa_t.initiate_mediated
  */
 static status_t initiate_mediated(private_ike_sa_t *this, host_t *me,
                                   host_t *other, chunk_t connect_id)
+{
     set_my_host(this, me->clone(me));
     set_other_host(this, other->clone(other));
     chunk_free(&this->connect_id);
     this->connect_id = chunk_clone(connect_id);
     return this->task_manager->initiate(this->task_manager);
+}
 #endif /* ME */
 /**
  * Resolve DNS host in configuration
  */
 static void resolve_hosts(private_ike_sa_t *this)
+{
     host_t *host;
     if (this->remote_host)
+    {
         host = this->remote_host->clone(this->remote_host);
         host->set_port(host, IKEV2_UDP_PORT);
+    }
     else
+    {
         host = host_create_from_dns(this->ike_cfg->get_other_addr(this->ike_cfg),
 , IKEV2_UDP_PORT);
+    }
     if (host)
+    {
         set_other_host(this, host);
+    }
     if (this->local_host)
+    {
         host = this->local_host->clone(this->local_host);
         host->set_port(host, IKEV2_UDP_PORT);
+    }
     else
+    {
         int family = 0;
         /* use same address family as for other */
         if (!this->other_host->is_anyaddr(this->other_host))
+        {
             family = this->other_host->get_family(this->other_host);
+        }
         host = host_create_from_dns(this->ike_cfg->get_my_addr(this->ike_cfg),
                                     family, IKEV2_UDP_PORT);
         if (host && host->is_anyaddr(host) &&
             !this->other_host->is_anyaddr(this->other_host))
+        {
             host->destroy(host);
             host = charon->kernel_interface->get_source_addr(
                             charon->kernel_interface, this->other_host, NULL);
             if (host)
+            {
                 host->set_port(host, IKEV2_UDP_PORT);
+            }
             else
             {    /* fallback to address family specific %any(6), if configured */
                 host = host_create_from_dns(
                                     this->ike_cfg->get_my_addr(this->ike_cfg),
 , IKEV2_UDP_PORT);
+            }
+        }
+    }
     if (host)
+    {
         set_my_host(this, host);
+    }
+}
 /**
  * Implementation of ike_sa_t.initiate
  */
 static status_t initiate(private_ike_sa_t *this,
                          child_cfg_t *child_cfg, u_int32_t reqid,
                          traffic_selector_t *tsi, traffic_selector_t *tsr)
+{
     task_t *task;
     if (this->state == IKE_CREATED)
+    {
         resolve_hosts(this);
         if (this->other_host->is_anyaddr(this->other_host)
 #ifdef ME
             && !this->peer_cfg->get_mediated_by(this->peer_cfg)
 #endif /* ME */
+            )
+        {
             child_cfg->destroy(child_cfg);
             DBG1(DBG_IKE, "unable to initiate to %%any");
             return DESTROY_ME;
+        }
         set_condition(this, COND_ORIGINAL_INITIATOR, TRUE);
         task = (task_t*)ike_init_create(&this->public, TRUE, NULL);
         this->task_manager->queue_task(this->task_manager, task);
         task = (task_t*)ike_natd_create(&this->public, TRUE);
         this->task_manager->queue_task(this->task_manager, task);
         task = (task_t*)ike_cert_pre_create(&this->public, TRUE);
         this->task_manager->queue_task(this->task_manager, task);
         task = (task_t*)ike_auth_create(&this->public, TRUE);
         this->task_manager->queue_task(this->task_manager, task);
         task = (task_t*)ike_cert_post_create(&this->public, TRUE);
         this->task_manager->queue_task(this->task_manager, task);
         task = (task_t*)ike_config_create(&this->public, TRUE);
         this->task_manager->queue_task(this->task_manager, task);
         task = (task_t*)ike_auth_lifetime_create(&this->public, TRUE);
         this->task_manager->queue_task(this->task_manager, task);
         if (this->peer_cfg->use_mobike(this->peer_cfg))
+        {
             task = (task_t*)ike_mobike_create(&this->public, TRUE);
             this->task_manager->queue_task(this->task_manager, task);
+        }
 #ifdef ME
         task = (task_t*)ike_me_create(&this->public, TRUE);
         this->task_manager->queue_task(this->task_manager, task);
 #endif /* ME */
+    }
 #ifdef ME
     if (this->peer_cfg->is_mediation(this->peer_cfg))
+    {
         if (this->state == IKE_ESTABLISHED)
+        {
             /* mediation connection is already established, retrigger state
              * change to notify bus listeners */
             DBG1(DBG_IKE, "mediation connection is already up");
             set_state(this, IKE_ESTABLISHED);
+        }
         DESTROY_IF(child_cfg);
+    }
     else
 #endif /* ME */
+    {
         /* normal IKE_SA with CHILD_SA */
         task = (task_t*)child_create_create(&this->public, child_cfg, FALSE,
                                             tsi, tsr);
         child_cfg->destroy(child_cfg);
         if (reqid)
+        {
             child_create_t *child_create = (child_create_t*)task;
             child_create->use_reqid(child_create, reqid);
+        }
         this->task_manager->queue_task(this->task_manager, task);
 #ifdef ME
         if (this->peer_cfg->get_mediated_by(this->peer_cfg))
+        {
             /* mediated connection, initiate mediation process */
             job_t *job = (job_t*)initiate_mediation_job_create(this->ike_sa_id);
             charon->processor->queue_job(charon->processor, job);
             return SUCCESS;
+        }
 #endif /* ME */
+    }
     return this->task_manager->initiate(this->task_manager);
+}
 /**
  * Implementation of ike_sa_t.process_message.
  */
 static status_t process_message(private_ike_sa_t *this, message_t *message)
+{
     status_t status;
     bool is_request;
     if (this->state == IKE_PASSIVE)
     {    /* do not handle messages in passive state */
         return FAILED;
+    }
     is_request = message->get_request(message);
     status = message->parse_body(message,
                                  this->keymat->get_crypter(this->keymat, TRUE),
                                  this->keymat->get_signer(this->keymat, TRUE));
     if (status != SUCCESS)
+    {
         if (is_request)
+        {
             switch (status)
+            {
                 case NOT_SUPPORTED:
                     DBG1(DBG_IKE, "critical unknown payloads found");
                     if (is_request)
+                    {
                         send_notify_response(this, message, UNSUPPORTED_CRITICAL_PAYLOAD);
+                    }
                     break;
                 case PARSE_ERROR:
                     DBG1(DBG_IKE, "message parsing failed");
                     if (is_request)
+                    {
                         send_notify_response(this, message, INVALID_SYNTAX);
+                    }
                     break;
                 case VERIFY_ERROR:
                     DBG1(DBG_IKE, "message verification failed");
                     if (is_request)
+                    {
                         send_notify_response(this, message, INVALID_SYNTAX);
+                    }
                     break;
                 case FAILED:
                     DBG1(DBG_IKE, "integrity check failed");
                     /* ignored */
                     break;
                 case INVALID_STATE:
                     DBG1(DBG_IKE, "found encrypted message, but no keys available");
                     if (is_request)
+                    {
                         send_notify_response(this, message, INVALID_SYNTAX);
+                    }
                 default:
                     break;
+            }
+        }
         DBG1(DBG_IKE, "%N %s with message ID %d processing failed",
              exchange_type_names, message->get_exchange_type(message),
              message->get_request(message) ? "request" : "response",
              message->get_message_id(message));
         if (this->state == IKE_CREATED)
         {    /* invalid initiation attempt, close SA */
             return DESTROY_ME;
+        }
         return status;
+    }
     else
+    {
         host_t *me, *other;
         me = message->get_destination(message);
         other = message->get_source(message);
         /* if this IKE_SA is virgin, we check for a config */
         if (this->ike_cfg == NULL)
+        {
             job_t *job;
             this->ike_cfg = charon->backends->get_ike_cfg(charon->backends,
                                                           me, other);
             if (this->ike_cfg == NULL)
+            {
                 /* no config found for these hosts, destroy */
                 DBG1(DBG_IKE, "no IKE config found for %H...%H, sending %N",
                      me, other, notify_type_names, NO_PROPOSAL_CHOSEN);
                 send_notify_response(this, message, NO_PROPOSAL_CHOSEN);
                 return DESTROY_ME;
+            }
             /* add a timeout if peer does not establish it completely */
             job = (job_t*)delete_ike_sa_job_create(this->ike_sa_id, FALSE);
             charon->scheduler->schedule_job(charon->scheduler, job,
                                             HALF_OPEN_IKE_SA_TIMEOUT);
+        }
         this->stats[STAT_INBOUND] = time_monotonic(NULL);
         /* check if message is trustworthy, and update host information */
         if (this->state == IKE_CREATED || this->state == IKE_CONNECTING ||
             message->get_exchange_type(message) != IKE_SA_INIT)
+        {
             if (!supports_extension(this, EXT_MOBIKE))
             {    /* with MOBIKE, we do no implicit updates */
                 update_hosts(this, me, other);
+            }
+        }
         return this->task_manager->process_message(this->task_manager, message);
+    }
+}
 /**
  * Implementation of ike_sa_t.get_id.
  */
 static ike_sa_id_t* get_id(private_ike_sa_t *this)
+{
     return this->ike_sa_id;
+}
 /**
  * Implementation of ike_sa_t.get_my_id.
  */
 static identification_t* get_my_id(private_ike_sa_t *this)
+{
     return this->my_id;
+}
 /**
  * Implementation of ike_sa_t.set_my_id.
  */
 static void set_my_id(private_ike_sa_t *this, identification_t *me)
+{
     DESTROY_IF(this->my_id);
     this->my_id = me;
+}
 /**
  * Implementation of ike_sa_t.get_other_id.
  */
 static identification_t* get_other_id(private_ike_sa_t *this)
+{
     return this->other_id;
+}
 /**
  * Implementation of ike_sa_t.set_other_id.
  */
 static void set_other_id(private_ike_sa_t *this, identification_t *other)
+{
     DESTROY_IF(this->other_id);
     this->other_id = other;
+}
 /**
  * Implementation of ike_sa_t.get_eap_identity.
  */
 static identification_t* get_eap_identity(private_ike_sa_t *this)
+{
     return this->eap_identity;
+}
 /**
  * Implementation of ike_sa_t.set_eap_identity.
  */
 static void set_eap_identity(private_ike_sa_t *this, identification_t *id)
+{
     DESTROY_IF(this->eap_identity);
     this->eap_identity = id;
+}
 /**
  * Implementation of ike_sa_t.add_child_sa.
  */
 static void add_child_sa(private_ike_sa_t *this, child_sa_t *child_sa)
+{
     this->child_sas->insert_last(this->child_sas, child_sa);
+}
 /**
  * Implementation of ike_sa_t.get_child_sa.
  */
 static child_sa_t* get_child_sa(private_ike_sa_t *this, protocol_id_t protocol,
                                 u_int32_t spi, bool inbound)
+{
     iterator_t *iterator;
     child_sa_t *current, *found = NULL;
     iterator = this->child_sas->create_iterator(this->child_sas, TRUE);
     while (iterator->iterate(iterator, (void**)&current))
+    {
         if (current->get_spi(current, inbound) == spi &&
             current->get_protocol(current) == protocol)
+        {
             found = current;
+        }
+    }
     iterator->destroy(iterator);
     return found;
+}
 /**
  * Implementation of ike_sa_t.create_child_sa_iterator.
  */
 static iterator_t* create_child_sa_iterator(private_ike_sa_t *this)
+{
     return this->child_sas->create_iterator(this->child_sas, TRUE);
+}
 /**
  * Implementation of ike_sa_t.rekey_child_sa.
  */
 static status_t rekey_child_sa(private_ike_sa_t *this, protocol_id_t protocol,
                                u_int32_t spi)
+{
     child_rekey_t *child_rekey;
     child_rekey = child_rekey_create(&this->public, protocol, spi);
     this->task_manager->queue_task(this->task_manager, &child_rekey->task);
     return this->task_manager->initiate(this->task_manager);
+}
 /**
  * Implementation of ike_sa_t.delete_child_sa.
  */
 static status_t delete_child_sa(private_ike_sa_t *this, protocol_id_t protocol,
                                 u_int32_t spi)
+{
     child_delete_t *child_delete;
     child_delete = child_delete_create(&this->public, protocol, spi);
     this->task_manager->queue_task(this->task_manager, &child_delete->task);
     return this->task_manager->initiate(this->task_manager);
+}
 /**
  * Implementation of ike_sa_t.destroy_child_sa.
  */
 static status_t destroy_child_sa(private_ike_sa_t *this, protocol_id_t protocol,
                                  u_int32_t spi)
+{
     iterator_t *iterator;
     child_sa_t *child_sa;
     status_t status = NOT_FOUND;
     iterator = this->child_sas->create_iterator(this->child_sas, TRUE);
     while (iterator->iterate(iterator, (void**)&child_sa))
+    {
         if (child_sa->get_protocol(child_sa) == protocol &&
             child_sa->get_spi(child_sa, TRUE) == spi)
+        {
             child_sa->destroy(child_sa);
             iterator->remove(iterator);
             status = SUCCESS;
             break;
+        }
+    }
     iterator->destroy(iterator);
     return status;
+}
 /**
  * Implementation of public_ike_sa_t.delete.
  */
 static status_t delete_(private_ike_sa_t *this)
+{
     ike_delete_t *ike_delete;
     switch (this->state)
+    {
         case IKE_ESTABLISHED:
         case IKE_REKEYING:
             ike_delete = ike_delete_create(&this->public, TRUE);
             this->task_manager->queue_task(this->task_manager, &ike_delete->task);
             return this->task_manager->initiate(this->task_manager);
         case IKE_CREATED:
             DBG1(DBG_IKE, "deleting unestablished IKE_SA");
             break;
         case IKE_PASSIVE:
             break;
         default:
             DBG1(DBG_IKE, "destroying IKE_SA in state %N "
                 "without notification", ike_sa_state_names, this->state);
             break;
+    }
     return DESTROY_ME;
+}
 /**
  * Implementation of ike_sa_t.rekey.
  */
 static status_t rekey(private_ike_sa_t *this)
+{
     ike_rekey_t *ike_rekey;
     ike_rekey = ike_rekey_create(&this->public, TRUE);
     this->task_manager->queue_task(this->task_manager, &ike_rekey->task);
     return this->task_manager->initiate(this->task_manager);
+}
 /**
  * Implementation of ike_sa_t.reauth
  */
 static status_t reauth(private_ike_sa_t *this)
+{
     task_t *task;
     /* we can't reauthenticate as responder when we use EAP or virtual IPs.
      * If the peer does not support RFC4478, there is no way to keep the
      * IKE_SA up. */
     if (!has_condition(this, COND_ORIGINAL_INITIATOR))
+    {
         DBG1(DBG_IKE, "initiator did not reauthenticate as requested");
         if (this->other_virtual_ip != NULL ||
             has_condition(this, COND_EAP_AUTHENTICATED)
 #ifdef ME
             /* as mediation server we too cannot reauth the IKE_SA */
             || this->is_mediation_server
 #endif /* ME */
+            )
+        {
             time_t now = time_monotonic(NULL);
             DBG1(DBG_IKE, "IKE_SA will timeout in %V",
                  &now, &this->stats[STAT_DELETE]);
             return FAILED;
+        }
         else
+        {
             DBG1(DBG_IKE, "reauthenticating actively");
+        }
+    }
     task = (task_t*)ike_reauth_create(&this->public);
     this->task_manager->queue_task(this->task_manager, task);
     return this->task_manager->initiate(this->task_manager);
+}
 /**
  * Implementation of ike_sa_t.reestablish
  */
 static status_t reestablish(private_ike_sa_t *this)
+{
     ike_sa_t *new;
     host_t *host;
     action_t action;
     iterator_t *iterator;
     child_sa_t *child_sa;
     child_cfg_t *child_cfg;
     bool restart = FALSE;
     status_t status = FAILED;
     /* check if we have children to keep up at all */
     iterator = create_child_sa_iterator(this);
     while (iterator->iterate(iterator, (void**)&child_sa))
+    {
         child_cfg = child_sa->get_config(child_sa);
         if (this->state == IKE_DELETING)
+        {
             action = child_cfg->get_close_action(child_cfg);
+        }
         else
+        {
             action = child_cfg->get_dpd_action(child_cfg);
+        }
         switch (action)
+        {
             case ACTION_RESTART:
                 restart = TRUE;
                 break;
             case ACTION_ROUTE:
                 charon->traps->install(charon->traps, this->peer_cfg, child_cfg);
                 break;
             default:
                 break;
+        }
+    }
     iterator->destroy(iterator);
 #ifdef ME
     /* mediation connections have no children, keep them up anyway */
     if (this->peer_cfg->is_mediation(this->peer_cfg))
+    {
         restart = TRUE;
+    }
 #endif /* ME */
     if (!restart)
+    {
         return FAILED;
+    }
     /* check if we are able to reestablish this IKE_SA */
     if (!has_condition(this, COND_ORIGINAL_INITIATOR) &&
         (this->other_virtual_ip != NULL ||
          has_condition(this, COND_EAP_AUTHENTICATED)
 #ifdef ME
          || this->is_mediation_server
 #endif /* ME */
         ))
+    {
         DBG1(DBG_IKE, "unable to reestablish IKE_SA due asymetric setup");
         return FAILED;
+    }
     new = charon->ike_sa_manager->checkout_new(charon->ike_sa_manager, TRUE);
     new->set_peer_cfg(new, this->peer_cfg);
     host = this->other_host;
     new->set_other_host(new, host->clone(host));
     host = this->my_host;
     new->set_my_host(new, host->clone(host));
     /* if we already have a virtual IP, we reuse it */
     host = this->my_virtual_ip;
     if (host)
+    {
         new->set_virtual_ip(new, TRUE, host);
+    }
 #ifdef ME
     if (this->peer_cfg->is_mediation(this->peer_cfg))
+    {
         status = new->initiate(new, NULL, 0, NULL, NULL);
+    }
     else
 #endif /* ME */
+    {
         iterator = create_child_sa_iterator(this);
         while (iterator->iterate(iterator, (void**)&child_sa))
+        {
             child_cfg = child_sa->get_config(child_sa);
             if (this->state == IKE_DELETING)
+            {
                 action = child_cfg->get_close_action(child_cfg);
+            }
             else
+            {
                 action = child_cfg->get_dpd_action(child_cfg);
+            }
             switch (action)
+            {
                 case ACTION_RESTART:
                     DBG1(DBG_IKE, "restarting CHILD_SA %s",
                          child_cfg->get_name(child_cfg));
                     child_cfg->get_ref(child_cfg);
                     status = new->initiate(new, child_cfg, 0, NULL, NULL);
                     break;
                 default:
                     continue;
+            }
             if (status == DESTROY_ME)
+            {
                 break;
+            }
+        }
         iterator->destroy(iterator);
+    }
     if (status == DESTROY_ME)
+    {
         charon->ike_sa_manager->checkin_and_destroy(charon->ike_sa_manager, new);
         status = FAILED;
+    }
     else
+    {
         charon->ike_sa_manager->checkin(charon->ike_sa_manager, new);
         status = SUCCESS;
+    }
     charon->bus->set_sa(charon->bus, &this->public);
     return status;
+}
 /**
  * Implementation of ike_sa_t.retransmit.
  */
 static status_t retransmit(private_ike_sa_t *this, u_int32_t message_id)
+{
     this->stats[STAT_OUTBOUND] = time_monotonic(NULL);
     if (this->task_manager->retransmit(this->task_manager, message_id) != SUCCESS)
+    {
         /* send a proper signal to brief interested bus listeners */
         switch (this->state)
+        {
             case IKE_CONNECTING:
+            {
                 /* retry IKE_SA_INIT if we have multiple keyingtries */
                 u_int32_t tries = this->peer_cfg->get_keyingtries(this->peer_cfg);
                 this->keyingtry++;
                 if (tries == 0 || tries > this->keyingtry)
+                {
                     DBG1(DBG_IKE, "peer not responding, trying again (%d/%d)",
                          this->keyingtry + 1, tries);
                     reset(this);
                     return this->task_manager->initiate(this->task_manager);
+                }
                 DBG1(DBG_IKE, "establishing IKE_SA failed, peer not responding");
                 break;
+            }
             case IKE_DELETING:
                 DBG1(DBG_IKE, "proper IKE_SA delete failed, peer not responding");
                 break;
             case IKE_REKEYING:
                 DBG1(DBG_IKE, "rekeying IKE_SA failed, peer not responding");
                 /* FALL */
             default:
                 reestablish(this);
                 break;
+        }
         return DESTROY_ME;
+    }
     return SUCCESS;
+}
 /**
  * Implementation of ike_sa_t.set_auth_lifetime.
  */
 static void set_auth_lifetime(private_ike_sa_t *this, u_int32_t lifetime)
+{
     u_int32_t reduction = this->peer_cfg->get_over_time(this->peer_cfg);
     u_int32_t reauth_time = time_monotonic(NULL) + lifetime - reduction;
     if (lifetime < reduction)
+    {
         DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, starting reauthentication",
              lifetime);
         charon->processor->queue_job(charon->processor,
                     (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE));
+    }
     else if (this->stats[STAT_REAUTH] == 0 ||
              this->stats[STAT_REAUTH] > reauth_time)
+    {
         this->stats[STAT_REAUTH] = reauth_time;
         DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, scheduling reauthentication"
              " in %ds", lifetime, lifetime - reduction);
         charon->scheduler->schedule_job(charon->scheduler,
                         (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE),
                         lifetime - reduction);
+    }
     else
+    {
         DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, "
              "reauthentication already scheduled in %ds", lifetime,
              this->stats[STAT_REAUTH] - time_monotonic(NULL));
+    }
+}
 /**
  * Implementation of ike_sa_t.roam.
  */
 static status_t roam(private_ike_sa_t *this, bool address)
+{
     host_t *src;
     ike_mobike_t *mobike;
     switch (this->state)
+    {
         case IKE_CREATED:
         case IKE_DELETING:
         case IKE_DESTROYING:
         case IKE_PASSIVE:
             return SUCCESS;
         default:
             break;
+    }
     /* responder just updates the peer about changed address config */
     if (!this->ike_sa_id->is_initiator(this->ike_sa_id))
+    {
         if (supports_extension(this, EXT_MOBIKE) && address)
+        {
             DBG1(DBG_IKE, "sending address list update using MOBIKE");
             mobike = ike_mobike_create(&this->public, TRUE);
             this->task_manager->queue_task(this->task_manager, (task_t*)mobike);
             return this->task_manager->initiate(this->task_manager);
+        }
         return SUCCESS;
+    }
     /* keep existing path if possible */
     src = charon->kernel_interface->get_source_addr(charon->kernel_interface,
                                             this->other_host, this->my_host);
     if (src)
+    {
         if (src->ip_equals(src, this->my_host))
+        {
             DBG2(DBG_IKE, "keeping connection path %H - %H",
                  src, this->other_host);
             src->destroy(src);
             set_condition(this, COND_STALE, FALSE);
             return SUCCESS;
+        }
         src->destroy(src);
+    }
     else
+    {
         /* check if we find a route at all */
         enumerator_t *enumerator;
         host_t *addr;
         src = charon->kernel_interface->get_source_addr(charon->kernel_interface,
                                                         this->other_host, NULL);
         if (!src)
+        {
             enumerator = this->additional_addresses->create_enumerator(
                                                     this->additional_addresses);
             while (enumerator->enumerate(enumerator, &addr))
+            {
                 DBG1(DBG_IKE, "looking for a route to %H ...", addr);
                 src = charon->kernel_interface->get_source_addr(
                                         charon->kernel_interface, addr, NULL);
                 if (src)
+                {
                     break;
+                }
+            }
             enumerator->destroy(enumerator);
+        }
         if (!src)
+        {
             DBG1(DBG_IKE, "no route found to reach %H, MOBIKE update deferred",
                  this->other_host);
             set_condition(this, COND_STALE, TRUE);
             return SUCCESS;
+        }
         src->destroy(src);
+    }
     set_condition(this, COND_STALE, FALSE);
     /* update addresses with mobike, if supported ... */
     if (supports_extension(this, EXT_MOBIKE))
+    {
         DBG1(DBG_IKE, "requesting address change using MOBIKE");
         mobike = ike_mobike_create(&this->public, TRUE);
         mobike->roam(mobike, address);
         this->task_manager->queue_task(this->task_manager, (task_t*)mobike);
         return this->task_manager->initiate(this->task_manager);
+    }
     DBG1(DBG_IKE, "reauthenticating IKE_SA due to address change");
     /* ... reauth if not */
     return reauth(this);
+}
 /**
  * Implementation of ike_sa_t.add_configuration_attribute
  */
 static void add_configuration_attribute(private_ike_sa_t *this,
                             attribute_handler_t *handler,
                             configuration_attribute_type_t type, chunk_t data)
+{
     attribute_entry_t *entry = malloc_thing(attribute_entry_t);
     entry->handler = handler;
     entry->type = type;
     entry->data = chunk_clone(data);
     this->attributes->insert_last(this->attributes, entry);
+}
 /**
  * Implementation of ike_sa_t.inherit.
  */
 static status_t inherit(private_ike_sa_t *this, private_ike_sa_t *other)
+{
     child_sa_t *child_sa;
     attribute_entry_t *entry;
     /* apply hosts and ids */
     this->my_host->destroy(this->my_host);
     this->other_host->destroy(this->other_host);
     this->my_id->destroy(this->my_id);
     this->other_id->destroy(this->other_id);
     this->my_host = other->my_host->clone(other->my_host);
     this->other_host = other->other_host->clone(other->other_host);
     this->my_id = other->my_id->clone(other->my_id);
     this->other_id = other->other_id->clone(other->other_id);
     /* apply virtual assigned IPs... */
     if (other->my_virtual_ip)
+    {
         this->my_virtual_ip = other->my_virtual_ip;
         other->my_virtual_ip = NULL;
+    }
     if (other->other_virtual_ip)
+    {
         this->other_virtual_ip = other->other_virtual_ip;
         other->other_virtual_ip = NULL;
+    }
     /* ... and configuration attributes */
     while (other->attributes->remove_last(other->attributes,
                                           (void**)&entry) == SUCCESS)
+    {
         this->attributes->insert_first(this->attributes, entry);
+    }
     /* inherit all conditions */
     this->conditions = other->conditions;
     if (this->conditions & COND_NAT_HERE)
+    {
         send_keepalive(this);
+    }
 #ifdef ME
     if (other->is_mediation_server)
+    {
         act_as_mediation_server(this);
+    }
     else if (other->server_reflexive_host)
+    {
         this->server_reflexive_host = other->server_reflexive_host->clone(
                 other->server_reflexive_host);
+    }
 #endif /* ME */
     /* adopt all children */
     while (other->child_sas->remove_last(other->child_sas,
                                          (void**)&child_sa) == SUCCESS)
+    {
         this->child_sas->insert_first(this->child_sas, (void*)child_sa);
+    }
     /* move pending tasks to the new IKE_SA */
     this->task_manager->adopt_tasks(this->task_manager, other->task_manager);
     /* reauthentication timeout survives a rekeying */
     if (other->stats[STAT_REAUTH])
+    {
         time_t reauth, delete, now = time_monotonic(NULL);
         this->stats[STAT_REAUTH] = other->stats[STAT_REAUTH];
         reauth = this->stats[STAT_REAUTH] - now;
         delete = reauth + this->peer_cfg->get_over_time(this->peer_cfg);
         this->stats[STAT_DELETE] = this->stats[STAT_REAUTH] + delete;
         DBG1(DBG_IKE, "rescheduling reauthentication in %ds after rekeying, "
              "lifetime reduced to %ds", reauth, delete);
         charon->scheduler->schedule_job(charon->scheduler,
                 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE), reauth);
         charon->scheduler->schedule_job(charon->scheduler,
                 (job_t*)delete_ike_sa_job_create(this->ike_sa_id, TRUE), delete);
+    }
     /* we have to initate here, there may be new tasks to handle */
     return this->task_manager->initiate(this->task_manager);
+}
 /**
  * Implementation of ike_sa_t.destroy.
  */
 static void destroy(private_ike_sa_t *this)
+{
     attribute_entry_t *entry;
     charon->bus->set_sa(charon->bus, &this->public);
     set_state(this, IKE_DESTROYING);
     /* remove attributes first, as we pass the IKE_SA to the handler */
     while (this->attributes->remove_last(this->attributes,
                                          (void**)&entry) == SUCCESS)
+    {
         lib->attributes->release(lib->attributes, entry->handler,
                                  this->other_id, entry->type, entry->data);
         free(entry->data.ptr);
         free(entry);
+    }
     this->attributes->destroy(this->attributes);
     this->child_sas->destroy_offset(this->child_sas, offsetof(child_sa_t, destroy));
     /* unset SA after here to avoid usage by the listeners */
     charon->bus->set_sa(charon->bus, NULL);
     this->task_manager->destroy(this->task_manager);
     this->keymat->destroy(this->keymat);
     if (this->my_virtual_ip)
+    {
         charon->kernel_interface->del_ip(charon->kernel_interface,
                                          this->my_virtual_ip);
         this->my_virtual_ip->destroy(this->my_virtual_ip);
+    }
     if (this->other_virtual_ip)
+    {
         if (this->peer_cfg && this->peer_cfg->get_pool(this->peer_cfg))
+        {
             lib->attributes->release_address(lib->attributes,
                                     this->peer_cfg->get_pool(this->peer_cfg),
                                     this->other_virtual_ip, this->other_id);
+        }
         this->other_virtual_ip->destroy(this->other_virtual_ip);
+    }
     this->additional_addresses->destroy_offset(this->additional_addresses,
                                                     offsetof(host_t, destroy));
 #ifdef ME
     if (this->is_mediation_server)
+    {
         charon->mediation_manager->remove(charon->mediation_manager,
                                           this->ike_sa_id);
+    }
     DESTROY_IF(this->server_reflexive_host);
     chunk_free(&this->connect_id);
 #endif /* ME */
     free(this->nat_detection_dest.ptr);
     DESTROY_IF(this->my_host);
     DESTROY_IF(this->other_host);
     DESTROY_IF(this->my_id);
     DESTROY_IF(this->other_id);
     DESTROY_IF(this->local_host);
     DESTROY_IF(this->remote_host);
     DESTROY_IF(this->eap_identity);
     DESTROY_IF(this->ike_cfg);
     DESTROY_IF(this->peer_cfg);
     DESTROY_IF(this->proposal);
     this->my_auth->destroy(this->my_auth);
     this->other_auth->destroy(this->other_auth);
     this->ike_sa_id->destroy(this->ike_sa_id);
     free(this);
+}
 /*
  * Described in header.
  */
 ike_sa_t * ike_sa_create(ike_sa_id_t *ike_sa_id)
+{
     private_ike_sa_t *this = malloc_thing(private_ike_sa_t);
     static u_int32_t unique_id = 0;
     /* Public functions */
     this->public.get_state = (ike_sa_state_t (*)(ike_sa_t*)) get_state;
     this->public.set_state = (void (*)(ike_sa_t*,ike_sa_state_t)) set_state;
     this->public.get_name = (char* (*)(ike_sa_t*))get_name;
     this->public.get_statistic = (u_int32_t(*)(ike_sa_t*, statistic_t kind))get_statistic;
     this->public.process_message = (status_t (*)(ike_sa_t*, message_t*)) process_message;
     this->public.initiate = (status_t (*)(ike_sa_t*,child_cfg_t*,u_int32_t,traffic_selector_t*,traffic_selector_t*)) initiate;
     this->public.get_ike_cfg = (ike_cfg_t* (*)(ike_sa_t*))get_ike_cfg;
     this->public.set_ike_cfg = (void (*)(ike_sa_t*,ike_cfg_t*))set_ike_cfg;
     this->public.get_peer_cfg = (peer_cfg_t* (*)(ike_sa_t*))get_peer_cfg;
     this->public.set_peer_cfg = (void (*)(ike_sa_t*,peer_cfg_t*))set_peer_cfg;
     this->public.get_auth_cfg = (auth_cfg_t*(*)(ike_sa_t*, bool local))get_auth_cfg;
     this->public.get_proposal = (proposal_t*(*)(ike_sa_t*))get_proposal;
     this->public.set_proposal = (void(*)(ike_sa_t*, proposal_t *proposal))set_proposal;
     this->public.get_id = (ike_sa_id_t* (*)(ike_sa_t*)) get_id;
     this->public.get_my_host = (host_t* (*)(ike_sa_t*)) get_my_host;
     this->public.set_my_host = (void (*)(ike_sa_t*,host_t*)) set_my_host;
     this->public.get_other_host = (host_t* (*)(ike_sa_t*)) get_other_host;
     this->public.set_other_host = (void (*)(ike_sa_t*,host_t*)) set_other_host;
     this->public.set_message_id = (void(*)(ike_sa_t*, bool inbound, u_int32_t mid))set_message_id;
     this->public.update_hosts = (void(*)(ike_sa_t*, host_t *me, host_t *other))update_hosts;
     this->public.get_my_id = (identification_t* (*)(ike_sa_t*)) get_my_id;
     this->public.set_my_id = (void (*)(ike_sa_t*,identification_t*)) set_my_id;
     this->public.get_other_id = (identification_t* (*)(ike_sa_t*)) get_other_id;
     this->public.set_other_id = (void (*)(ike_sa_t*,identification_t*)) set_other_id;
     this->public.get_eap_identity = (identification_t* (*)(ike_sa_t*)) get_eap_identity;
     this->public.set_eap_identity = (void (*)(ike_sa_t*,identification_t*)) set_eap_identity;
     this->public.enable_extension = (void(*)(ike_sa_t*, ike_extension_t extension))enable_extension;
     this->public.supports_extension = (bool(*)(ike_sa_t*, ike_extension_t extension))supports_extension;
     this->public.set_condition = (void (*)(ike_sa_t*, ike_condition_t,bool)) set_condition;
     this->public.has_condition = (bool (*)(ike_sa_t*,ike_condition_t)) has_condition;
     this->public.set_pending_updates = (void(*)(ike_sa_t*, u_int32_t updates))set_pending_updates;
     this->public.get_pending_updates = (u_int32_t(*)(ike_sa_t*))get_pending_updates;
     this->public.create_additional_address_iterator = (iterator_t*(*)(ike_sa_t*))create_additional_address_iterator;
     this->public.add_additional_address = (void(*)(ike_sa_t*, host_t *host))add_additional_address;
     this->public.has_mapping_changed = (bool(*)(ike_sa_t*, chunk_t hash))has_mapping_changed;
     this->public.retransmit = (status_t (*)(ike_sa_t *, u_int32_t)) retransmit;
     this->public.delete = (status_t (*)(ike_sa_t*))delete_;
     this->public.destroy = (void (*)(ike_sa_t*))destroy;
     this->public.send_dpd = (status_t (*)(ike_sa_t*)) send_dpd;
     this->public.send_keepalive = (void (*)(ike_sa_t*)) send_keepalive;
     this->public.get_keymat = (keymat_t*(*)(ike_sa_t*))get_keymat;
     this->public.add_child_sa = (void (*)(ike_sa_t*,child_sa_t*)) add_child_sa;
     this->public.get_child_sa = (child_sa_t* (*)(ike_sa_t*,protocol_id_t,u_int32_t,bool)) get_child_sa;
     this->public.create_child_sa_iterator = (iterator_t* (*)(ike_sa_t*)) create_child_sa_iterator;
     this->public.rekey_child_sa = (status_t (*)(ike_sa_t*,protocol_id_t,u_int32_t)) rekey_child_sa;
     this->public.delete_child_sa = (status_t (*)(ike_sa_t*,protocol_id_t,u_int32_t)) delete_child_sa;
     this->public.destroy_child_sa = (status_t (*)(ike_sa_t*,protocol_id_t,u_int32_t))destroy_child_sa;
     this->public.rekey = (status_t (*)(ike_sa_t*))rekey;
     this->public.reauth = (status_t (*)(ike_sa_t*))reauth;
     this->public.reestablish = (status_t (*)(ike_sa_t*))reestablish;
     this->public.set_auth_lifetime = (void(*)(ike_sa_t*, u_int32_t lifetime))set_auth_lifetime;
     this->public.roam = (status_t(*)(ike_sa_t*,bool))roam;
     this->public.inherit = (status_t (*)(ike_sa_t*,ike_sa_t*))inherit;
     this->public.generate_message = (status_t (*)(ike_sa_t*,message_t*,packet_t**))generate_message;
     this->public.reset = (void (*)(ike_sa_t*))reset;
     this->public.get_unique_id = (u_int32_t (*)(ike_sa_t*))get_unique_id;
     this->public.set_virtual_ip = (void (*)(ike_sa_t*,bool,host_t*))set_virtual_ip;
     this->public.get_virtual_ip = (host_t* (*)(ike_sa_t*,bool))get_virtual_ip;
     this->public.add_configuration_attribute = (void(*)(ike_sa_t*, attribute_handler_t *handler,configuration_attribute_type_t type, chunk_t data))add_configuration_attribute;
     this->public.set_kmaddress = (void (*)(ike_sa_t*,host_t*,host_t*))set_kmaddress;
 #ifdef ME
     this->public.act_as_mediation_server = (void (*)(ike_sa_t*)) act_as_mediation_server;
     this->public.get_server_reflexive_host = (host_t* (*)(ike_sa_t*)) get_server_reflexive_host;
     this->public.set_server_reflexive_host = (void (*)(ike_sa_t*,host_t*)) set_server_reflexive_host;
     this->public.get_connect_id = (chunk_t (*)(ike_sa_t*)) get_connect_id;
     this->public.initiate_mediation = (status_t (*)(ike_sa_t*,peer_cfg_t*)) initiate_mediation;
     this->public.initiate_mediated = (status_t (*)(ike_sa_t*,host_t*,host_t*,chunk_t)) initiate_mediated;
     this->public.relay = (status_t (*)(ike_sa_t*,identification_t*,chunk_t,chunk_t,linked_list_t*,bool)) relay;
     this->public.callback = (status_t (*)(ike_sa_t*,identification_t*)) callback;
     this->public.respond = (status_t (*)(ike_sa_t*,identification_t*,chunk_t)) respond;
 #endif /* ME */
     /* initialize private fields */
     this->ike_sa_id = ike_sa_id->clone(ike_sa_id);
     this->child_sas = linked_list_create();
     this->my_host = host_create_any(AF_INET);
     this->my_host->set_port(this->my_host, IKEV2_UDP_PORT);
     this->other_host = host_create_any(AF_INET);
     this->my_id = identification_create_from_encoding(ID_ANY, chunk_empty);
     this->other_id = identification_create_from_encoding(ID_ANY, chunk_empty);
     this->eap_identity = NULL;
     this->extensions = 0;
     this->conditions = 0;
     this->keymat = keymat_create(ike_sa_id->is_initiator(ike_sa_id));
     this->state = IKE_CREATED;
     this->keepalive_interval = lib->settings->get_time(lib->settings,
                                     "charon.keep_alive", KEEPALIVE_INTERVAL);
     memset(this->stats, 0, sizeof(this->stats));
     this->stats[STAT_INBOUND] = this->stats[STAT_OUTBOUND] = time_monotonic(NULL);
     this->ike_cfg = NULL;
     this->peer_cfg = NULL;
     this->my_auth = auth_cfg_create();
     this->other_auth = auth_cfg_create();
     this->proposal = NULL;
     this->task_manager = task_manager_create(&this->public);
     this->unique_id = ++unique_id;
     this->my_virtual_ip = NULL;
     this->other_virtual_ip = NULL;
     this->additional_addresses = linked_list_create();
     this->attributes = linked_list_create();
     this->nat_detection_dest = chunk_empty;
     this->pending_updates = 0;
     this->keyingtry = 0;
     this->local_host = NULL;
     this->remote_host = NULL;
 #ifdef ME
     this->is_mediation_server = FALSE;
     this->server_reflexive_host = NULL;
     this->connect_id = chunk_empty;
 #endif /* ME */
     return &this->public;
+}