diff options
Diffstat (limited to 'src/charon/sa/tasks/ike_me.c')
| -rw-r--r-- | src/charon/sa/tasks/ike_me.c | 856 |
1 files changed, 0 insertions, 856 deletions
diff --git a/src/charon/sa/tasks/ike_me.c b/src/charon/sa/tasks/ike_me.c deleted file mode 100644 index 2d2847ae0..000000000 --- a/src/charon/sa/tasks/ike_me.c +++ /dev/null @@ -1,856 +0,0 @@ -/* - * Copyright (C) 2007-2008 Tobias Brunner - * 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 "ike_me.h" - -#include <string.h> - -#include <daemon.h> -#include <config/peer_cfg.h> -#include <encoding/payloads/id_payload.h> -#include <encoding/payloads/notify_payload.h> -#include <encoding/payloads/endpoint_notify.h> -#include <processing/jobs/mediation_job.h> - -#define ME_CONNECTID_LEN 4 -#define ME_CONNECTKEY_LEN 16 - -typedef struct private_ike_me_t private_ike_me_t; - -/** - * Private members of a ike_me_t task. - */ -struct private_ike_me_t { - - /** - * Public methods and task_t interface. - */ - ike_me_t public; - - /** - * Assigned IKE_SA. - */ - ike_sa_t *ike_sa; - - /** - * Are we the initiator? - */ - bool initiator; - - /** - * Is this a mediation connection? - */ - bool mediation; - - /** - * Is this the response from another peer? - */ - bool response; - - /** - * Gathered endpoints - */ - linked_list_t *local_endpoints; - - /** - * Parsed endpoints - */ - linked_list_t *remote_endpoints; - - /** - * Did the peer request a callback? - */ - bool callback; - - /** - * Did the connect fail? - */ - bool failed; - - /** - * Was there anything wrong with the payloads? - */ - bool invalid_syntax; - - /** - * The requested peer - */ - identification_t *peer_id; - /** - * Received ID used for connectivity checks - */ - chunk_t connect_id; - - /** - * Received key used for connectivity checks - */ - chunk_t connect_key; - - /** - * Peer config of the mediated connection - */ - peer_cfg_t *mediated_cfg; - -}; - -/** - * Adds a list of endpoints as notifies to a given message - */ -static void add_endpoints_to_message(message_t *message, linked_list_t *endpoints) -{ - iterator_t *iterator; - endpoint_notify_t *endpoint; - - iterator = endpoints->create_iterator(endpoints, TRUE); - while (iterator->iterate(iterator, (void**)&endpoint)) - { - message->add_payload(message, (payload_t*)endpoint->build_notify(endpoint)); - } - iterator->destroy(iterator); -} - -/** - * Gathers endpoints and adds them to the current message - */ -static void gather_and_add_endpoints(private_ike_me_t *this, message_t *message) -{ - enumerator_t *enumerator; - host_t *addr, *host; - u_int16_t port; - - /* get the port that is used to communicate with the ms */ - host = this->ike_sa->get_my_host(this->ike_sa); - port = host->get_port(host); - - enumerator = charon->kernel_interface->create_address_enumerator( - charon->kernel_interface, FALSE, FALSE); - while (enumerator->enumerate(enumerator, (void**)&addr)) - { - host = addr->clone(addr); - host->set_port(host, port); - - this->local_endpoints->insert_last(this->local_endpoints, - endpoint_notify_create_from_host(HOST, host, NULL)); - - host->destroy(host); - } - enumerator->destroy(enumerator); - - host = this->ike_sa->get_server_reflexive_host(this->ike_sa); - if (host) - { - this->local_endpoints->insert_last(this->local_endpoints, - endpoint_notify_create_from_host(SERVER_REFLEXIVE, host, - this->ike_sa->get_my_host(this->ike_sa))); - } - - add_endpoints_to_message(message, this->local_endpoints); -} - -/** - * read notifys from message and evaluate them - */ -static void process_payloads(private_ike_me_t *this, message_t *message) -{ - enumerator_t *enumerator; - payload_t *payload; - - enumerator = message->create_payload_enumerator(message); - while (enumerator->enumerate(enumerator, &payload)) - { - if (payload->get_type(payload) != NOTIFY) - { - continue; - } - - notify_payload_t *notify = (notify_payload_t*)payload; - - switch (notify->get_notify_type(notify)) - { - case ME_CONNECT_FAILED: - { - DBG2(DBG_IKE, "received ME_CONNECT_FAILED notify"); - this->failed = TRUE; - break; - } - case ME_MEDIATION: - { - DBG2(DBG_IKE, "received ME_MEDIATION notify"); - this->mediation = TRUE; - break; - } - case ME_ENDPOINT: - { - endpoint_notify_t *endpoint; - endpoint = endpoint_notify_create_from_payload(notify); - if (!endpoint) - { - DBG1(DBG_IKE, "received invalid ME_ENDPOINT notify"); - break; - } - DBG1(DBG_IKE, "received %N ME_ENDPOINT %#H", - me_endpoint_type_names, endpoint->get_type(endpoint), - endpoint->get_host(endpoint)); - - this->remote_endpoints->insert_last(this->remote_endpoints, - endpoint); - break; - } - case ME_CALLBACK: - { - DBG2(DBG_IKE, "received ME_CALLBACK notify"); - this->callback = TRUE; - break; - } - case ME_CONNECTID: - { - chunk_free(&this->connect_id); - this->connect_id = chunk_clone(notify->get_notification_data(notify)); - DBG2(DBG_IKE, "received ME_CONNECTID %#B", &this->connect_id); - break; - } - case ME_CONNECTKEY: - { - chunk_free(&this->connect_key); - this->connect_key = chunk_clone(notify->get_notification_data(notify)); - DBG4(DBG_IKE, "received ME_CONNECTKEY %#B", &this->connect_key); - break; - } - case ME_RESPONSE: - { - DBG2(DBG_IKE, "received ME_RESPONSE notify"); - this->response = TRUE; - break; - } - default: - break; - } - } - enumerator->destroy(enumerator); -} - -/** - * Implementation of task_t.build for initiator - */ -static status_t build_i(private_ike_me_t *this, message_t *message) -{ - switch(message->get_exchange_type(message)) - { - case IKE_SA_INIT: - { - peer_cfg_t *peer_cfg = this->ike_sa->get_peer_cfg(this->ike_sa); - if (peer_cfg->is_mediation(peer_cfg)) - { - DBG2(DBG_IKE, "adding ME_MEDIATION"); - message->add_notify(message, FALSE, ME_MEDIATION, chunk_empty); - } - else - { - return SUCCESS; - } - break; - } - case IKE_AUTH: - { - if (this->ike_sa->has_condition(this->ike_sa, COND_NAT_HERE)) - { - endpoint_notify_t *endpoint; - endpoint = endpoint_notify_create_from_host(SERVER_REFLEXIVE, - NULL, NULL); - message->add_payload(message, (payload_t*)endpoint->build_notify(endpoint)); - endpoint->destroy(endpoint); - } - break; - } - case ME_CONNECT: - { - rng_t *rng; - id_payload_t *id_payload; - id_payload = id_payload_create_from_identification(ID_PEER, - this->peer_id); - message->add_payload(message, (payload_t*)id_payload); - - rng = lib->crypto->create_rng(lib->crypto, RNG_STRONG); - if (!rng) - { - DBG1(DBG_IKE, "unable to generate connect ID for ME_CONNECT"); - return FAILED; - } - if (!this->response) - { - /* only the initiator creates a connect ID. the responder - * returns the connect ID that it received from the initiator */ - rng->allocate_bytes(rng, ME_CONNECTID_LEN, &this->connect_id); - } - rng->allocate_bytes(rng, ME_CONNECTKEY_LEN, &this->connect_key); - rng->destroy(rng); - - message->add_notify(message, FALSE, ME_CONNECTID, this->connect_id); - message->add_notify(message, FALSE, ME_CONNECTKEY, this->connect_key); - - if (this->response) - { - message->add_notify(message, FALSE, ME_RESPONSE, chunk_empty); - } - else - { - /* FIXME: should we make this configurable? */ - message->add_notify(message, FALSE, ME_CALLBACK, chunk_empty); - } - - gather_and_add_endpoints(this, message); - - break; - } - default: - break; - } - return NEED_MORE; -} - -/** - * Implementation of task_t.process for responder - */ -static status_t process_r(private_ike_me_t *this, message_t *message) -{ - switch(message->get_exchange_type(message)) - { - case ME_CONNECT: - { - id_payload_t *id_payload; - id_payload = (id_payload_t*)message->get_payload(message, ID_PEER); - if (!id_payload) - { - DBG1(DBG_IKE, "received ME_CONNECT without ID_PEER payload" - ", aborting"); - break; - } - this->peer_id = id_payload->get_identification(id_payload); - - process_payloads(this, message); - - if (this->callback) - { - DBG1(DBG_IKE, "received ME_CALLBACK for '%Y'", this->peer_id); - break; - } - - if (!this->connect_id.ptr) - { - DBG1(DBG_IKE, "received ME_CONNECT without ME_CONNECTID notify" - ", aborting"); - this->invalid_syntax = TRUE; - break; - } - - if (!this->connect_key.ptr) - { - DBG1(DBG_IKE, "received ME_CONNECT without ME_CONNECTKEY " - "notify, aborting"); - this->invalid_syntax = TRUE; - break; - } - - if (!this->remote_endpoints->get_count(this->remote_endpoints)) - { - DBG1(DBG_IKE, "received ME_CONNECT without any ME_ENDPOINT " - "payloads, aborting"); - this->invalid_syntax = TRUE; - break; - } - - DBG1(DBG_IKE, "received ME_CONNECT"); - break; - } - default: - break; - } - return NEED_MORE; -} - -/** - * Implementation of task_t.build for responder - */ -static status_t build_r(private_ike_me_t *this, message_t *message) -{ - switch(message->get_exchange_type(message)) - { - case ME_CONNECT: - { - if (this->invalid_syntax) - { - message->add_notify(message, TRUE, INVALID_SYNTAX, chunk_empty); - break; - } - - if (this->callback) - { - /* we got a callback from the mediation server, initiate the - * queued mediated connecction */ - charon->connect_manager->check_and_initiate( - charon->connect_manager, - this->ike_sa->get_id(this->ike_sa), - this->ike_sa->get_my_id(this->ike_sa), this->peer_id); - return SUCCESS; - } - - if (this->response) - { - /* FIXME: handle result of set_responder_data - * as initiator, upon receiving a response from another peer, - * update the checklist and start sending checks */ - charon->connect_manager->set_responder_data( - charon->connect_manager, - this->connect_id, this->connect_key, - this->remote_endpoints); - } - else - { - /* FIXME: handle result of set_initiator_data - * as responder, create a checklist with the initiator's data */ - charon->connect_manager->set_initiator_data( - charon->connect_manager, - this->peer_id, this->ike_sa->get_my_id(this->ike_sa), - this->connect_id, this->connect_key, - this->remote_endpoints, FALSE); - if (this->ike_sa->respond(this->ike_sa, this->peer_id, - this->connect_id) != SUCCESS) - { - return FAILED; - } - } - break; - } - default: - break; - } - return SUCCESS; -} - -/** - * Implementation of task_t.process for initiator - */ -static status_t process_i(private_ike_me_t *this, message_t *message) -{ - switch(message->get_exchange_type(message)) - { - case IKE_SA_INIT: - { - process_payloads(this, message); - if (!this->mediation) - { - DBG1(DBG_IKE, "server did not return a ME_MEDIATION, aborting"); - return FAILED; - } - return NEED_MORE; - } - case IKE_AUTH: - { - process_payloads(this, message); - /* FIXME: we should update the server reflexive endpoint somehow, - * if mobike notices a change */ - endpoint_notify_t *reflexive; - if (this->remote_endpoints->get_first(this->remote_endpoints, - (void**)&reflexive) == SUCCESS && - reflexive->get_type(reflexive) == SERVER_REFLEXIVE) - { /* FIXME: should we accept this endpoint even if we did not send - * a request? */ - host_t *endpoint = reflexive->get_host(reflexive); - endpoint = endpoint->clone(endpoint); - this->ike_sa->set_server_reflexive_host(this->ike_sa, endpoint); - } - break; - } - case ME_CONNECT: - { - process_payloads(this, message); - - if (this->failed) - { - DBG1(DBG_IKE, "peer '%Y' is not online", this->peer_id); - /* FIXME: notify the mediated connection (job?) */ - } - else - { - if (this->response) - { - /* FIXME: handle result of set_responder_data. */ - /* as responder, we update the checklist and start sending - * checks */ - charon->connect_manager->set_responder_data( - charon->connect_manager, this->connect_id, - this->connect_key, this->local_endpoints); - } - else - { - /* FIXME: handle result of set_initiator_data */ - /* as initiator, we create a checklist and set the - * initiator's data */ - charon->connect_manager->set_initiator_data( - charon->connect_manager, - this->ike_sa->get_my_id(this->ike_sa), - this->peer_id, this->connect_id, this->connect_key, - this->local_endpoints, TRUE); - /* FIXME: also start a timer for the whole transaction - * (maybe within the connect_manager?) */ - } - } - break; - } - default: - break; - } - return SUCCESS; -} - -/** - * Implementation of task_t.build for initiator (mediation server) - */ -static status_t build_i_ms(private_ike_me_t *this, message_t *message) -{ - switch(message->get_exchange_type(message)) - { - case ME_CONNECT: - { - id_payload_t *id_payload; - id_payload = id_payload_create_from_identification(ID_PEER, - this->peer_id); - message->add_payload(message, (payload_t*)id_payload); - - if (this->callback) - { - message->add_notify(message, FALSE, ME_CALLBACK, chunk_empty); - } - else - { - if (this->response) - { - message->add_notify(message, FALSE, ME_RESPONSE, - chunk_empty); - } - message->add_notify(message, FALSE, ME_CONNECTID, - this->connect_id); - message->add_notify(message, FALSE, ME_CONNECTKEY, - this->connect_key); - add_endpoints_to_message(message, this->remote_endpoints); - } - break; - } - default: - break; - } - return NEED_MORE; -} - -/** - * Implementation of task_t.process for responder (mediation server) - */ -static status_t process_r_ms(private_ike_me_t *this, message_t *message) -{ - switch(message->get_exchange_type(message)) - { - case IKE_SA_INIT: - { - /* FIXME: we should check for SA* and TS* payloads. if there are - * any, send NO_ADDITIONAL_SAS back and delete this SA */ - process_payloads(this, message); - return this->mediation ? NEED_MORE : SUCCESS; - } - case IKE_AUTH: - { - /* FIXME: we should check whether the current peer_config is - * configured as mediation connection */ - process_payloads(this, message); - break; - } - case CREATE_CHILD_SA: - { - /* FIXME: if this is not to rekey the IKE SA we have to return a - * NO_ADDITIONAL_SAS and then delete the SA */ - break; - } - case ME_CONNECT: - { - id_payload_t *id_payload; - id_payload = (id_payload_t*)message->get_payload(message, ID_PEER); - if (!id_payload) - { - DBG1(DBG_IKE, "received ME_CONNECT without ID_PEER payload" - ", aborting"); - this->invalid_syntax = TRUE; - break; - } - this->peer_id = id_payload->get_identification(id_payload); - - process_payloads(this, message); - - if (!this->connect_id.ptr) - { - DBG1(DBG_IKE, "received ME_CONNECT without ME_CONNECTID notify" - ", aborting"); - this->invalid_syntax = TRUE; - break; - } - - if (!this->connect_key.ptr) - { - DBG1(DBG_IKE, "received ME_CONNECT without ME_CONNECTKEY notify" - ", aborting"); - this->invalid_syntax = TRUE; - break; - } - - if (!this->remote_endpoints->get_count(this->remote_endpoints)) - { - DBG1(DBG_IKE, "received ME_CONNECT without any ME_ENDPOINT " - "payloads, aborting"); - this->invalid_syntax = TRUE; - break; - } - break; - } - default: - break; - } - return NEED_MORE; -} - -/** - * Implementation of task_t.build for responder (mediation server) - */ -static status_t build_r_ms(private_ike_me_t *this, message_t *message) -{ - switch(message->get_exchange_type(message)) - { - case IKE_SA_INIT: - { - message->add_notify(message, FALSE, ME_MEDIATION, chunk_empty); - return NEED_MORE; - } - case IKE_AUTH: - { - endpoint_notify_t *endpoint; - if (this->remote_endpoints->get_first(this->remote_endpoints, - (void**)&endpoint) == SUCCESS && - endpoint->get_type(endpoint) == SERVER_REFLEXIVE) - { - host_t *host = this->ike_sa->get_other_host(this->ike_sa); - DBG2(DBG_IKE, "received request for a server reflexive " - "endpoint sending: %#H", host); - endpoint = endpoint_notify_create_from_host(SERVER_REFLEXIVE, - host, NULL); - message->add_payload(message, (payload_t*)endpoint->build_notify(endpoint)); - endpoint->destroy(endpoint); - } - this->ike_sa->act_as_mediation_server(this->ike_sa); - break; - } - case ME_CONNECT: - { - if (this->invalid_syntax) - { - message->add_notify(message, TRUE, INVALID_SYNTAX, chunk_empty); - break; - } - - ike_sa_id_t *peer_sa; - if (this->callback) - { - peer_sa = charon->mediation_manager->check_and_register( - charon->mediation_manager, this->peer_id, - this->ike_sa->get_other_id(this->ike_sa)); - } - else - { - peer_sa = charon->mediation_manager->check( - charon->mediation_manager, this->peer_id); - } - - if (!peer_sa) - { - /* the peer is not online */ - message->add_notify(message, TRUE, ME_CONNECT_FAILED, - chunk_empty); - break; - } - - job_t *job = (job_t*)mediation_job_create(this->peer_id, - this->ike_sa->get_other_id(this->ike_sa), this->connect_id, - this->connect_key, this->remote_endpoints, this->response); - charon->processor->queue_job(charon->processor, job); - break; - } - default: - break; - } - return SUCCESS; -} - -/** - * Implementation of task_t.process for initiator (mediation server) - */ -static status_t process_i_ms(private_ike_me_t *this, message_t *message) -{ - /* FIXME: theoretically we should be prepared to receive a ME_CONNECT_FAILED - * here if the responding peer is not able to proceed. in this case we shall - * notify the initiating peer with a ME_CONNECT request containing only a - * ME_CONNECT_FAILED */ - return SUCCESS; -} - -/** - * Implementation of ike_me.connect - */ -static void me_connect(private_ike_me_t *this, identification_t *peer_id) -{ - this->peer_id = peer_id->clone(peer_id); -} - -/** - * Implementation of ike_me.respond - */ -static void me_respond(private_ike_me_t *this, identification_t *peer_id, - chunk_t connect_id) -{ - this->peer_id = peer_id->clone(peer_id); - this->connect_id = chunk_clone(connect_id); - this->response = TRUE; -} - -/** - * Implementation of ike_me.callback - */ -static void me_callback(private_ike_me_t *this, identification_t *peer_id) -{ - this->peer_id = peer_id->clone(peer_id); - this->callback = TRUE; -} - -/** - * Implementation of ike_me.relay - */ -static void relay(private_ike_me_t *this, identification_t *requester, - chunk_t connect_id, chunk_t connect_key, - linked_list_t *endpoints, bool response) -{ - this->peer_id = requester->clone(requester); - this->connect_id = chunk_clone(connect_id); - this->connect_key = chunk_clone(connect_key); - - this->remote_endpoints->destroy_offset(this->remote_endpoints, - offsetof(endpoint_notify_t, destroy)); - this->remote_endpoints = endpoints->clone_offset(endpoints, - offsetof(endpoint_notify_t, clone)); - - this->response = response; -} - -/** - * Implementation of task_t.get_type - */ -static task_type_t get_type(private_ike_me_t *this) -{ - return IKE_ME; -} - -/** - * Implementation of task_t.migrate - */ -static void migrate(private_ike_me_t *this, ike_sa_t *ike_sa) -{ - this->ike_sa = ike_sa; -} - -/** - * Implementation of task_t.destroy - */ -static void destroy(private_ike_me_t *this) -{ - DESTROY_IF(this->peer_id); - - chunk_free(&this->connect_id); - chunk_free(&this->connect_key); - - this->local_endpoints->destroy_offset(this->local_endpoints, - offsetof(endpoint_notify_t, destroy)); - this->remote_endpoints->destroy_offset(this->remote_endpoints, - offsetof(endpoint_notify_t, destroy)); - - DESTROY_IF(this->mediated_cfg); - free(this); -} - -/* - * Described in header. - */ -ike_me_t *ike_me_create(ike_sa_t *ike_sa, bool initiator) -{ - private_ike_me_t *this = malloc_thing(private_ike_me_t); - - this->public.task.get_type = (task_type_t(*)(task_t*))get_type; - this->public.task.migrate = (void(*)(task_t*,ike_sa_t*))migrate; - this->public.task.destroy = (void(*)(task_t*))destroy; - - if (ike_sa->has_condition(ike_sa, COND_ORIGINAL_INITIATOR)) - { - if (initiator) - { - this->public.task.build = (status_t(*)(task_t*,message_t*))build_i; - this->public.task.process = (status_t(*)(task_t*,message_t*))process_i; - } - else - { - this->public.task.build = (status_t(*)(task_t*,message_t*))build_r; - this->public.task.process = (status_t(*)(task_t*,message_t*))process_r; - } - } - else - { - /* mediation server */ - if (initiator) - { - this->public.task.build = (status_t(*)(task_t*,message_t*))build_i_ms; - this->public.task.process = (status_t(*)(task_t*,message_t*))process_i_ms; - } - else - { - this->public.task.build = (status_t(*)(task_t*,message_t*))build_r_ms; - this->public.task.process = (status_t(*)(task_t*,message_t*))process_r_ms; - } - } - - this->public.connect = (void(*)(ike_me_t*,identification_t*))me_connect; - this->public.respond = (void(*)(ike_me_t*,identification_t*,chunk_t))me_respond; - this->public.callback = (void(*)(ike_me_t*,identification_t*))me_callback; - this->public.relay = (void(*)(ike_me_t*,identification_t*,chunk_t,chunk_t,linked_list_t*,bool))relay; - - this->ike_sa = ike_sa; - this->initiator = initiator; - - this->peer_id = NULL; - this->connect_id = chunk_empty; - this->connect_key = chunk_empty; - this->local_endpoints = linked_list_create(); - this->remote_endpoints = linked_list_create(); - this->mediation = FALSE; - this->response = FALSE; - this->callback = FALSE; - this->failed = FALSE; - this->invalid_syntax = FALSE; - - this->mediated_cfg = NULL; - - return &this->public; -} |