5 Author: Pekka Riikonen <priikone@silcnet.org>
7 Copyright (C) 2006 - 2007 Pekka Riikonen
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; version 2 of the License.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
21 #include "silcclient.h"
22 #include "client_internal.h"
24 /************************ Static utility functions **************************/
26 /* Callback called after connected to remote host */
28 static void silc_client_connect_callback(SilcNetStatus status,
29 SilcStream stream, void *context)
31 SilcFSMThread fsm = context;
32 SilcClientConnection conn = silc_fsm_get_context(fsm);
33 SilcClient client = conn->client;
35 conn->internal->op = NULL;
36 if (conn->internal->verbose) {
40 case SILC_NET_UNKNOWN_IP:
41 client->internal->ops->say(
42 client, conn, SILC_CLIENT_MESSAGE_ERROR,
43 "Could not connect to host %s: unknown IP address",
46 case SILC_NET_UNKNOWN_HOST:
47 client->internal->ops->say(
48 client, conn, SILC_CLIENT_MESSAGE_ERROR,
49 "Could not connect to host %s: unknown host name",
52 case SILC_NET_HOST_UNREACHABLE:
53 client->internal->ops->say(
54 client, conn, SILC_CLIENT_MESSAGE_ERROR,
55 "Could not connect to host %s: network unreachable",
58 case SILC_NET_CONNECTION_REFUSED:
59 client->internal->ops->say(
60 client, conn, SILC_CLIENT_MESSAGE_ERROR,
61 "Could not connect to host %s: connection refused",
64 case SILC_NET_CONNECTION_TIMEOUT:
65 client->internal->ops->say(
66 client, conn, SILC_CLIENT_MESSAGE_ERROR,
67 "Could not connect to host %s: connection timeout",
71 client->internal->ops->say(
72 client, conn, SILC_CLIENT_MESSAGE_ERROR,
73 "Could not connect to host %s",
79 if (status != SILC_NET_OK) {
80 /* Notify application of failure */
81 SILC_LOG_DEBUG(("Connecting failed"));
82 conn->internal->status = SILC_CLIENT_CONN_ERROR;
83 silc_fsm_next(fsm, silc_client_st_connect_error);
84 SILC_FSM_CALL_CONTINUE(fsm);
88 /* Connection created successfully */
89 SILC_LOG_DEBUG(("Connected"));
90 conn->internal->user_stream = stream;
91 SILC_FSM_CALL_CONTINUE(fsm);
94 /* Called after application has verified remote host's public key */
96 static void silc_client_ke_verify_key_cb(SilcBool success, void *context)
98 SilcVerifyKeyContext verify = context;
100 SILC_LOG_DEBUG(("Start"));
102 /* Call the completion callback back to the SKE */
103 verify->completion(verify->ske, success ? SILC_SKE_STATUS_OK :
104 SILC_SKE_STATUS_UNSUPPORTED_PUBLIC_KEY,
105 verify->completion_context);
110 /* Verify remote host's public key */
112 static void silc_client_ke_verify_key(SilcSKE ske,
113 SilcPublicKey public_key,
115 SilcSKEVerifyCbCompletion completion,
116 void *completion_context)
118 SilcFSMThread fsm = context;
119 SilcClientConnection conn = silc_fsm_get_context(fsm);
120 SilcClient client = conn->client;
121 SilcVerifyKeyContext verify;
123 /* If we provided repository for SKE and we got here the key was not
124 found from the repository. */
125 if (conn->internal->params.repository &&
126 !conn->internal->params.verify_notfound) {
127 completion(ske, SILC_SKE_STATUS_UNSUPPORTED_PUBLIC_KEY,
132 SILC_LOG_DEBUG(("Verify remote public key"));
134 verify = silc_calloc(1, sizeof(*verify));
136 completion(ske, SILC_SKE_STATUS_UNSUPPORTED_PUBLIC_KEY,
141 verify->completion = completion;
142 verify->completion_context = completion_context;
144 /* Verify public key in application */
145 client->internal->ops->verify_public_key(client, conn,
146 conn->type, public_key,
147 silc_client_ke_verify_key_cb,
151 /* Key exchange protocol completion callback */
153 static void silc_client_ke_completion(SilcSKE ske,
154 SilcSKEStatus status,
155 SilcSKESecurityProperties prop,
156 SilcSKEKeyMaterial keymat,
157 SilcSKERekeyMaterial rekey,
160 SilcFSMThread fsm = context;
161 SilcClientConnection conn = silc_fsm_get_context(fsm);
162 SilcClient client = conn->client;
163 SilcCipher send_key, receive_key;
164 SilcHmac hmac_send, hmac_receive;
166 conn->internal->op = NULL;
167 if (status != SILC_SKE_STATUS_OK) {
168 /* Key exchange failed */
169 SILC_LOG_DEBUG(("Error during key exchange with %s: %s (%d)",
170 conn->remote_host, silc_ske_map_status(status), status));
172 if (conn->internal->verbose)
173 client->internal->ops->say(client, conn, SILC_CLIENT_MESSAGE_ERROR,
174 "Error during key exchange with %s: %s",
176 silc_ske_map_status(status));
178 conn->internal->status = SILC_CLIENT_CONN_ERROR_KE;
179 silc_ske_free_rekey_material(rekey);
181 silc_fsm_next(fsm, silc_client_st_connect_error);
182 SILC_FSM_CALL_CONTINUE_SYNC(fsm);
186 SILC_LOG_DEBUG(("Setting keys into use"));
188 /* Allocate the cipher and HMAC contexts */
189 if (!silc_ske_set_keys(ske, keymat, prop, &send_key, &receive_key,
190 &hmac_send, &hmac_receive, &conn->internal->hash)) {
191 /* Error setting keys */
192 SILC_LOG_DEBUG(("Could not set keys into use"));
194 if (conn->internal->verbose)
195 client->internal->ops->say(
196 client, conn, SILC_CLIENT_MESSAGE_ERROR,
197 "Error during key exchange with %s: cannot use keys",
200 conn->internal->status = SILC_CLIENT_CONN_ERROR_KE;
201 silc_ske_free_rekey_material(rekey);
203 silc_fsm_next(fsm, silc_client_st_connect_error);
204 SILC_FSM_CALL_CONTINUE_SYNC(fsm);
208 /* Set the keys into the packet stream. After this call packets will be
209 encrypted with these keys. */
210 if (!silc_packet_set_keys(conn->stream, send_key, receive_key, hmac_send,
211 hmac_receive, FALSE)) {
212 /* Error setting keys */
213 SILC_LOG_DEBUG(("Could not set keys into use"));
215 if (conn->internal->verbose)
216 client->internal->ops->say(
217 client, conn, SILC_CLIENT_MESSAGE_ERROR,
218 "Error during key exchange with %s: cannot use keys",
221 conn->internal->status = SILC_CLIENT_CONN_ERROR_KE;
222 silc_ske_free_rekey_material(rekey);
224 silc_fsm_next(fsm, silc_client_st_connect_error);
225 SILC_FSM_CALL_CONTINUE_SYNC(fsm);
229 conn->internal->rekey = rekey;
231 SILC_LOG_DEBUG(("Key Exchange completed"));
233 /* Key exchange done */
234 SILC_FSM_CALL_CONTINUE_SYNC(fsm);
237 /* Rekey protocol completion callback */
239 static void silc_client_rekey_completion(SilcSKE ske,
240 SilcSKEStatus status,
241 SilcSKESecurityProperties prop,
242 SilcSKEKeyMaterial keymat,
243 SilcSKERekeyMaterial rekey,
246 SilcFSMThread fsm = context;
247 SilcClientConnection conn = silc_fsm_get_context(fsm);
248 SilcClient client = conn->client;
250 conn->internal->op = NULL;
251 if (status != SILC_SKE_STATUS_OK) {
253 SILC_LOG_DEBUG(("Error during rekey with %s: %s (%d)",
254 conn->remote_host, silc_ske_map_status(status), status));
256 if (conn->internal->verbose)
257 client->internal->ops->say(client, conn, SILC_CLIENT_MESSAGE_ERROR,
258 "Error during rekey with %s: %s",
260 silc_ske_map_status(status));
262 silc_ske_free(conn->internal->ske);
263 conn->internal->ske = NULL;
264 silc_fsm_finish(fsm);
268 silc_ske_free_rekey_material(conn->internal->rekey);
269 conn->internal->rekey = rekey;
271 silc_ske_free(conn->internal->ske);
272 conn->internal->ske = NULL;
274 SILC_LOG_DEBUG(("Rekey completed conn %p", conn));
277 silc_fsm_finish(fsm);
280 /* Callback called by application to return authentication data */
282 static void silc_client_connect_auth_method(SilcAuthMethod auth_meth,
283 void *auth, SilcUInt32 auth_len,
286 SilcFSMThread fsm = context;
287 SilcClientConnection conn = silc_fsm_get_context(fsm);
289 conn->internal->params.auth_method = auth_meth;
290 conn->internal->params.auth = auth;
291 conn->internal->params.auth_len = auth_len;
293 SILC_FSM_CALL_CONTINUE(fsm);
296 /* Connection authentication completion callback */
298 static void silc_client_connect_auth_completion(SilcConnAuth connauth,
302 SilcFSMThread fsm = context;
303 SilcClientConnection conn = silc_fsm_get_context(fsm);
304 SilcClient client = conn->client;
306 conn->internal->op = NULL;
307 silc_connauth_free(connauth);
310 if (conn->internal->verbose)
311 client->internal->ops->say(
312 client, conn, SILC_CLIENT_MESSAGE_ERROR,
313 "Authentication failed");
315 conn->internal->status = SILC_CLIENT_CONN_ERROR_AUTH;
316 conn->internal->error = SILC_STATUS_ERR_AUTH_FAILED;
317 silc_fsm_next(fsm, silc_client_st_connect_error);
320 SILC_FSM_CALL_CONTINUE_SYNC(fsm);
323 /********************** CONNECTION_AUTH_REQUEST packet **********************/
325 /* Received connection authentication request packet. We get the
326 required authentication method here. */
328 SILC_FSM_STATE(silc_client_connect_auth_request)
330 SilcClientConnection conn = fsm_context;
331 SilcPacket packet = state_context;
332 SilcUInt16 conn_type, auth_meth;
334 if (!conn->internal->auth_request) {
335 silc_packet_free(packet);
336 return SILC_FSM_FINISH;
339 /* Parse the payload */
340 if (silc_buffer_unformat(&packet->buffer,
341 SILC_STR_UI_SHORT(&conn_type),
342 SILC_STR_UI_SHORT(&auth_meth),
344 auth_meth = SILC_AUTH_NONE;
346 silc_packet_free(packet);
348 SILC_LOG_DEBUG(("Resolved authentication method: %s",
349 (auth_meth == SILC_AUTH_NONE ? "none" :
350 auth_meth == SILC_AUTH_PASSWORD ? "passphrase" :
352 conn->internal->params.auth_method = auth_meth;
354 /* Continue authentication */
355 silc_fsm_continue_sync(&conn->internal->event_thread);
356 return SILC_FSM_FINISH;
359 /*************************** Connect remote host ****************************/
361 /* Connection timeout callback */
363 SILC_TASK_CALLBACK(silc_client_connect_timeout)
365 SilcClientConnection conn = context;
367 SILC_LOG_DEBUG(("Connection timeout"));
369 conn->internal->status = SILC_CLIENT_CONN_ERROR_TIMEOUT;
370 conn->internal->error = SILC_STATUS_ERR_TIMEDOUT;
372 silc_fsm_next(&conn->internal->event_thread, silc_client_st_connect_error);
373 silc_fsm_continue_sync(&conn->internal->event_thread);
376 /* Creates a connection to remote host */
378 SILC_FSM_STATE(silc_client_st_connect)
380 SilcClientConnection conn = fsm_context;
382 SILC_LOG_DEBUG(("Connecting to %s:%d", conn->remote_host,
386 silc_fsm_next(fsm, silc_client_st_connect_set_stream);
388 /* Add connection timeout */
389 if (conn->internal->params.timeout_secs)
390 silc_schedule_task_add_timeout(conn->internal->schedule,
391 silc_client_connect_timeout, conn,
392 conn->internal->params.timeout_secs, 0);
394 if (conn->internal->params.udp) {
397 if (!conn->internal->params.local_ip) {
398 /** IP address not given */
399 SILC_LOG_ERROR(("Local UDP IP address not specified"));
400 conn->internal->status = SILC_CLIENT_CONN_ERROR;
401 silc_fsm_next(fsm, silc_client_st_connect_error);
402 return SILC_FSM_CONTINUE;
406 stream = silc_net_udp_connect(conn->internal->params.bind_ip ?
407 conn->internal->params.bind_ip :
408 conn->internal->params.local_ip,
409 conn->internal->params.local_port,
410 conn->remote_host, conn->remote_port,
411 conn->internal->schedule);
413 SILC_FSM_CALL(silc_client_connect_callback(stream ? SILC_NET_OK :
414 SILC_NET_HOST_UNREACHABLE,
418 SILC_FSM_CALL(conn->internal->op = silc_net_tcp_connect(
419 NULL, conn->remote_host,
421 conn->internal->schedule,
422 silc_client_connect_callback, fsm));
426 /* Sets the new connection stream into use and creates packet stream */
428 SILC_FSM_STATE(silc_client_st_connect_set_stream)
430 SilcClientConnection conn = fsm_context;
431 SilcClient client = conn->client;
433 if (conn->internal->disconnected) {
435 silc_fsm_next(fsm, silc_client_st_connect_error);
436 return SILC_FSM_CONTINUE;
439 /* Create packet stream */
440 conn->stream = silc_packet_stream_create(client->internal->packet_engine,
441 conn->internal->schedule,
442 conn->internal->user_stream);
444 /** Cannot create packet stream */
445 SILC_LOG_DEBUG(("Could not create packet stream"));
446 conn->internal->status = SILC_CLIENT_CONN_ERROR;
447 silc_fsm_next(fsm, silc_client_st_connect_error);
448 return SILC_FSM_CONTINUE;
451 silc_packet_set_context(conn->stream, conn);
453 /** Start key exchange */
454 silc_fsm_next(fsm, silc_client_st_connect_key_exchange);
455 return SILC_FSM_CONTINUE;
458 /* Starts key exchange protocol with remote host */
460 SILC_FSM_STATE(silc_client_st_connect_key_exchange)
462 SilcClientConnection conn = fsm_context;
463 SilcClient client = conn->client;
464 SilcSKEParamsStruct params;
467 SILC_LOG_DEBUG(("Starting key exchange protocol"));
470 conn->internal->ske =
471 silc_ske_alloc(client->rng, conn->internal->schedule,
472 conn->internal->params.repository,
473 conn->public_key, conn->private_key, fsm);
474 if (!conn->internal->ske) {
476 conn->internal->status = SILC_CLIENT_CONN_ERROR_KE;
477 silc_fsm_next(fsm, silc_client_st_connect_error);
478 return SILC_FSM_CONTINUE;
481 /* Set SKE callbacks */
482 silc_ske_set_callbacks(conn->internal->ske, silc_client_ke_verify_key,
483 silc_client_ke_completion, fsm);
485 /* Set up key exchange parameters */
486 params.version = client->internal->silc_client_version;
487 params.timeout_secs = conn->internal->params.timeout_secs;
488 params.flags = SILC_SKE_SP_FLAG_MUTUAL;
489 if (conn->internal->params.pfs)
490 params.flags |= SILC_SKE_SP_FLAG_PFS;
491 if (conn->internal->params.udp) {
492 params.flags |= SILC_SKE_SP_FLAG_IV_INCLUDED;
493 params.session_port = conn->internal->params.local_port;
496 if (conn->internal->params.no_authentication)
497 /** Run key exchange (no auth) */
498 silc_fsm_next(fsm, silc_client_st_connected);
499 else if (conn->internal->params.udp)
500 /** Run key exchange (UDP)*/
501 silc_fsm_next(fsm, silc_client_st_connect_setup_udp);
503 /** Run key exchange (TCP) */
504 silc_fsm_next(fsm, silc_client_st_connect_auth_resolve);
506 /* Old server version requires empty Client ID in packets. Remove this
507 backwards support somepoint after 1.1 server is released. */
508 memset(&cid, 0, sizeof(cid));
510 silc_packet_set_ids(conn->stream, SILC_ID_CLIENT, &cid, 0, NULL);
512 SILC_FSM_CALL(conn->internal->op = silc_ske_initiator(conn->internal->ske,
517 /* For UDP/IP connections, set up the UDP session after successful key
520 SILC_FSM_STATE(silc_client_st_connect_setup_udp)
522 SilcClientConnection conn = fsm_context;
523 SilcStream stream, old;
524 SilcSKESecurityProperties prop;
526 SILC_LOG_DEBUG(("Setup UDP SILC session"));
528 if (conn->internal->disconnected) {
530 silc_fsm_next(fsm, silc_client_st_connect_error);
531 return SILC_FSM_CONTINUE;
534 /* Create new UDP stream */
535 prop = silc_ske_get_security_properties(conn->internal->ske);
536 stream = silc_net_udp_connect(conn->internal->params.local_ip,
537 conn->internal->params.local_port,
538 conn->remote_host, prop->remote_port,
539 conn->internal->schedule);
541 /** Cannot create UDP stream */
542 conn->internal->status = SILC_CLIENT_CONN_ERROR;
543 silc_fsm_next(fsm, silc_client_st_connect_error);
544 return SILC_FSM_CONTINUE;
547 /* Set the new stream to packet stream */
548 old = silc_packet_stream_get_stream(conn->stream);
549 silc_packet_stream_set_stream(conn->stream, stream);
550 silc_packet_stream_set_iv_included(conn->stream);
551 silc_packet_set_sid(conn->stream, 0);
553 /* Delete the old stream */
554 silc_stream_destroy(old);
556 /** Start authentication */
557 silc_fsm_next(fsm, silc_client_st_connect_auth_resolve);
558 return SILC_FSM_CONTINUE;
561 /* Resolve authentication method to be used in authentication protocol */
563 SILC_FSM_STATE(silc_client_st_connect_auth_resolve)
565 SilcClientConnection conn = fsm_context;
567 SILC_LOG_DEBUG(("Resolve authentication method"));
569 if (conn->internal->disconnected) {
571 silc_fsm_next(fsm, silc_client_st_connect_error);
572 return SILC_FSM_CONTINUE;
575 /* If authentication method and data is set, use them */
576 if (conn->internal->params.auth_set) {
577 /** Got authentication data */
578 silc_fsm_next(fsm, silc_client_st_connect_auth_start);
579 return SILC_FSM_CONTINUE;
582 /* Send connection authentication request packet */
583 silc_packet_send_va(conn->stream,
584 SILC_PACKET_CONNECTION_AUTH_REQUEST, 0,
585 SILC_STR_UI_SHORT(SILC_CONN_CLIENT),
586 SILC_STR_UI_SHORT(SILC_AUTH_NONE),
589 /** Wait for authentication method */
590 conn->internal->auth_request = TRUE;
591 conn->internal->params.auth_method = SILC_AUTH_NONE;
592 silc_fsm_next_later(fsm, silc_client_st_connect_auth_data, 2, 0);
593 return SILC_FSM_WAIT;
596 /* Get authentication data to be used in authentication protocol */
598 SILC_FSM_STATE(silc_client_st_connect_auth_data)
600 SilcClientConnection conn = fsm_context;
601 SilcClient client = conn->client;
603 SILC_LOG_DEBUG(("Get authentication data"));
605 if (conn->internal->disconnected) {
607 silc_fsm_next(fsm, silc_client_st_connect_error);
608 return SILC_FSM_CONTINUE;
611 conn->internal->auth_request = FALSE;
613 /** Get authentication data */
614 silc_fsm_next(fsm, silc_client_st_connect_auth_start);
615 SILC_FSM_CALL(client->internal->ops->get_auth_method(
619 conn->internal->params.auth_method,
620 silc_client_connect_auth_method, fsm));
623 /* Start connection authentication with remote host */
625 SILC_FSM_STATE(silc_client_st_connect_auth_start)
627 SilcClientConnection conn = fsm_context;
628 SilcConnAuth connauth;
630 SILC_LOG_DEBUG(("Starting connection authentication protocol"));
632 if (conn->internal->disconnected) {
634 silc_fsm_next(fsm, silc_client_st_connect_error);
635 return SILC_FSM_CONTINUE;
638 /* We always use the same key for connection authentication and SKE */
639 if (conn->internal->params.auth_method == SILC_AUTH_PUBLIC_KEY)
640 conn->internal->params.auth = conn->private_key;
642 /* Allocate connection authentication protocol */
643 connauth = silc_connauth_alloc(conn->internal->schedule,
645 conn->internal->params.rekey_secs);
648 conn->internal->status = SILC_CLIENT_CONN_ERROR_AUTH;
649 conn->internal->error = SILC_STATUS_ERR_AUTH_FAILED;
650 silc_fsm_next(fsm, silc_client_st_connect_error);
651 return SILC_FSM_CONTINUE;
654 /** Start connection authentication */
655 silc_fsm_next(fsm, silc_client_st_connected);
656 SILC_FSM_CALL(conn->internal->op = silc_connauth_initiator(
657 connauth, SILC_CONN_CLIENT,
658 conn->internal->params.auth_method,
659 conn->internal->params.auth,
660 conn->internal->params.auth_len,
661 silc_client_connect_auth_completion,
665 /* Connection fully established */
667 SILC_FSM_STATE(silc_client_st_connected)
669 SilcClientConnection conn = fsm_context;
670 SilcClient client = conn->client;
672 /* Get SILC protocol version remote supports */
673 silc_ske_parse_version(conn->internal->ske, &conn->internal->remote_version,
674 NULL, NULL, NULL, NULL);
676 silc_ske_free(conn->internal->ske);
677 conn->internal->ske = NULL;
679 if (conn->internal->disconnected) {
681 silc_fsm_next(fsm, silc_client_st_connect_error);
682 return SILC_FSM_CONTINUE;
685 SILC_LOG_DEBUG(("Connection established"));
687 /* Install rekey timer */
688 if (conn->type != SILC_CONN_CLIENT)
689 silc_schedule_task_add_timeout(conn->internal->schedule,
690 silc_client_rekey_timer, conn,
691 conn->internal->params.rekey_secs, 0);
693 /* If we connected to server, now register to network. */
694 if (conn->type == SILC_CONN_SERVER &&
695 !conn->internal->params.no_authentication) {
697 /* If detach data is provided, resume the session. */
698 if (conn->internal->params.detach_data &&
699 conn->internal->params.detach_data_len) {
700 /** Resume detached session */
701 silc_fsm_next(fsm, silc_client_st_resume);
703 /** Register to network */
704 silc_fsm_next(fsm, silc_client_st_register);
707 return SILC_FSM_CONTINUE;
710 silc_schedule_task_del_by_all(conn->internal->schedule, 0,
711 silc_client_connect_timeout, conn);
713 /* Call connection callback */
714 conn->callback(client, conn, SILC_CLIENT_CONN_SUCCESS, 0, NULL,
715 conn->callback_context);
717 silc_async_free(conn->internal->cop);
718 conn->internal->cop = NULL;
720 return SILC_FSM_FINISH;
723 /* Error during connecting */
725 SILC_FSM_STATE(silc_client_st_connect_error)
727 SilcClientConnection conn = fsm_context;
729 if (conn->internal->ske) {
730 silc_ske_free(conn->internal->ske);
731 conn->internal->ske = NULL;
734 /* Signal to close connection */
735 if (!conn->internal->disconnected) {
736 conn->internal->disconnected = TRUE;
737 SILC_FSM_EVENT_SIGNAL(&conn->internal->wait_event);
740 silc_schedule_task_del_by_all(conn->internal->schedule, 0,
741 silc_client_connect_timeout, conn);
743 return SILC_FSM_FINISH;
746 /****************************** Connect rekey *******************************/
748 /* Connection rekey timer callback */
750 SILC_TASK_CALLBACK(silc_client_rekey_timer)
752 SilcClientConnection conn = context;
754 /* Signal to start rekey */
755 if (!silc_fsm_is_started(&conn->internal->event_thread)) {
756 conn->internal->rekey_responder = FALSE;
757 conn->internal->rekeying = TRUE;
758 SILC_FSM_EVENT_SIGNAL(&conn->internal->wait_event);
761 /* Reinstall rekey timer */
762 silc_schedule_task_add_timeout(conn->internal->schedule,
763 silc_client_rekey_timer, conn,
764 conn->internal->params.rekey_secs, 0);
769 SILC_FSM_STATE(silc_client_st_rekey)
771 SilcClientConnection conn = fsm_context;
772 SilcClient client = conn->client;
774 SILC_LOG_DEBUG(("Rekey conn %p", conn));
776 if (conn->internal->disconnected)
777 return SILC_FSM_FINISH;
780 conn->internal->ske =
781 silc_ske_alloc(client->rng, conn->internal->schedule,
782 conn->internal->params.repository,
783 conn->public_key, conn->private_key, fsm);
784 if (!conn->internal->ske)
785 return SILC_FSM_FINISH;
787 /* Set SKE callbacks */
788 silc_ske_set_callbacks(conn->internal->ske, NULL,
789 silc_client_rekey_completion, fsm);
792 if (!conn->internal->rekey_responder)
793 SILC_FSM_CALL(conn->internal->op = silc_ske_rekey_initiator(
796 conn->internal->rekey));
798 SILC_FSM_CALL(conn->internal->op = silc_ske_rekey_responder(
801 conn->internal->rekey,