5 Author: Pekka Riikonen <priikone@poseidon.pspt.fi>
7 Copyright (C) 2000 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; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
21 #include "clientincludes.h"
23 /* Prints a message with three star (*) sign before the actual message
24 on the current output window. This is used to print command outputs
25 and error messages. */
27 void silc_say(SilcClient client, SilcClientConnection conn,
32 SilcClientInternal app = (SilcClientInternal)client->application;
34 memset(message, 0, sizeof(message));
35 strncat(message, "\n*** ", 5);
38 vsprintf(message + 5, msg, vp);
41 /* Print the message */
42 silc_print_to_window(app->screen->output_win[0], message);
45 /* Message for a channel. The `sender' is the nickname of the sender
46 received in the packet. The `channel_name' is the name of the channel. */
48 void silc_channel_message(SilcClient client, SilcClientConnection conn,
49 SilcClientEntry sender, SilcChannelEntry channel
52 /* Message from client */
53 if (conn && !strcmp(conn->current_channel->channel_name,
54 channel->channel_name))
55 silc_print(client, "<%s> %s", sender ? sender->nickname : "[<unknown>]",
58 silc_print(client, "<%s:%s> %s", sender ? sender->nickname : "[<unknown>]",
59 channel->channel_name, msg);
62 /* Private message to the client. The `sender' is the nickname of the
63 sender received in the packet. */
65 void silc_private_message(SilcClient client, SilcClientConnection conn,
66 SilcClientEntry sender, char *msg)
68 silc_print(client, "*%s* %s", sender->nickname, msg);
72 /* Notify message to the client. The notify arguments are sent in the
73 same order as servers sends them. The arguments are same as received
74 from the server except for ID's. If ID is received application receives
75 the corresponding entry to the ID. For example, if Client ID is received
76 application receives SilcClientEntry. Also, if the notify type is
77 for channel the channel entry is sent to application (even if server
80 void silc_notify(SilcClient client, SilcClientConnection conn,
81 SilcNotifyType type, ...)
83 SilcClientInternal app = (SilcClientInternal)client->application;
86 SilcClientEntry client_entry, client_entry2;
87 SilcChannelEntry channel_entry;
93 memset(message, 0, sizeof(message));
95 /* Get arguments (defined by protocol in silc-pp-01 -draft) */
97 case SILC_NOTIFY_TYPE_NONE:
98 tmp = va_arg(vp, char *);
101 strcpy(message, tmp);
104 case SILC_NOTIFY_TYPE_INVITE:
105 client_entry = va_arg(vp, SilcClientEntry);
106 channel_entry = va_arg(vp, SilcChannelEntry);
107 snprintf(message, sizeof(message), "%s invites you to channel %s",
108 client_entry->nickname, channel_entry->channel_name);
111 case SILC_NOTIFY_TYPE_JOIN:
112 client_entry = va_arg(vp, SilcClientEntry);
113 channel_entry = va_arg(vp, SilcChannelEntry);
114 snprintf(message, sizeof(message), "%s (%s) has joined channel %s",
115 client_entry->nickname, client_entry->username,
116 channel_entry->channel_name);
117 if (client_entry == conn->local_entry) {
120 silc_list_start(channel_entry->clients);
121 while ((chu = silc_list_get(channel_entry->clients)) != SILC_LIST_END) {
122 if (chu->client == client_entry) {
123 if (app->screen->bottom_line->mode)
124 silc_free(app->screen->bottom_line->mode);
125 app->screen->bottom_line->mode = silc_client_chumode_char(chu->mode);
126 silc_screen_print_bottom_line(app->screen, 0);
133 case SILC_NOTIFY_TYPE_LEAVE:
134 client_entry = va_arg(vp, SilcClientEntry);
135 channel_entry = va_arg(vp, SilcChannelEntry);
136 if (client_entry->server)
137 snprintf(message, sizeof(message), "%s@%s has left channel %s",
138 client_entry->nickname, client_entry->server,
139 channel_entry->channel_name);
141 snprintf(message, sizeof(message), "%s has left channel %s",
142 client_entry->nickname, channel_entry->channel_name);
145 case SILC_NOTIFY_TYPE_SIGNOFF:
146 client_entry = va_arg(vp, SilcClientEntry);
147 tmp = va_arg(vp, char *);
148 if (client_entry->server)
149 snprintf(message, sizeof(message), "Signoff: %s@%s %s%s%s",
150 client_entry->nickname, client_entry->server,
151 tmp ? "(" : "", tmp ? tmp : "", tmp ? ")" : "");
153 snprintf(message, sizeof(message), "Signoff: %s %s%s%s",
154 client_entry->nickname,
155 tmp ? "(" : "", tmp ? tmp : "", tmp ? ")" : "");
158 case SILC_NOTIFY_TYPE_TOPIC_SET:
159 client_entry = va_arg(vp, SilcClientEntry);
160 tmp = va_arg(vp, char *);
161 channel_entry = va_arg(vp, SilcChannelEntry);
162 if (client_entry->server)
163 snprintf(message, sizeof(message), "%s@%s set topic on %s: %s",
164 client_entry->nickname, client_entry->server,
165 channel_entry->channel_name, tmp);
167 snprintf(message, sizeof(message), "%s set topic on %s: %s",
168 client_entry->nickname, channel_entry->channel_name, tmp);
171 case SILC_NOTIFY_TYPE_NICK_CHANGE:
172 client_entry = va_arg(vp, SilcClientEntry);
173 client_entry2 = va_arg(vp, SilcClientEntry);
174 if (client_entry->server && client_entry2->server)
175 snprintf(message, sizeof(message), "%s@%s is known as %s@%s",
176 client_entry->nickname, client_entry->server,
177 client_entry2->nickname, client_entry2->server);
179 snprintf(message, sizeof(message), "%s is known as %s",
180 client_entry->nickname, client_entry2->nickname);
183 case SILC_NOTIFY_TYPE_CMODE_CHANGE:
184 client_entry = va_arg(vp, SilcClientEntry);
185 tmp = silc_client_chmode(va_arg(vp, unsigned int));
186 channel_entry = va_arg(vp, SilcChannelEntry);
188 snprintf(message, sizeof(message), "%s changed channel mode to +%s",
189 client_entry->nickname, tmp);
191 snprintf(message, sizeof(message), "%s removed all channel modes",
192 client_entry->nickname);
193 if (app->screen->bottom_line->channel_mode)
194 silc_free(app->screen->bottom_line->channel_mode);
195 app->screen->bottom_line->channel_mode = tmp;
196 silc_screen_print_bottom_line(app->screen, 0);
199 case SILC_NOTIFY_TYPE_CUMODE_CHANGE:
200 client_entry = va_arg(vp, SilcClientEntry);
201 tmp_int = va_arg(vp, unsigned int);
202 tmp = silc_client_chumode(tmp_int);
203 client_entry2 = va_arg(vp, SilcClientEntry);
204 channel_entry = va_arg(vp, SilcChannelEntry);
206 snprintf(message, sizeof(message), "%s changed %s's mode to +%s",
207 client_entry->nickname, client_entry2->nickname, tmp);
209 snprintf(message, sizeof(message), "%s removed %s's modes",
210 client_entry->nickname, client_entry2->nickname);
211 if (client_entry2 == conn->local_entry) {
212 if (app->screen->bottom_line->mode)
213 silc_free(app->screen->bottom_line->mode);
214 app->screen->bottom_line->mode = silc_client_chumode_char(tmp_int);
215 silc_screen_print_bottom_line(app->screen, 0);
220 case SILC_NOTIFY_TYPE_MOTD:
224 tmp = va_arg(vp, unsigned char *);
228 if (tmp[i++] == '\n') {
229 memset(line, 0, sizeof(line));
230 strncat(line, tmp, i - 1);
233 silc_say(client, conn, "%s", line);
243 case SILC_NOTIFY_TYPE_CHANNEL_CHANGE:
246 case SILC_NOTIFY_TYPE_KICKED:
247 client_entry = va_arg(vp, SilcClientEntry);
248 tmp = va_arg(vp, char *);
249 channel_entry = va_arg(vp, SilcChannelEntry);
251 if (client_entry == conn->local_entry) {
252 snprintf(message, sizeof(message),
253 "You have been kicked off channel %s %s%s%s",
254 conn->current_channel->channel_name,
255 tmp ? "(" : "", tmp ? tmp : "", tmp ? ")" : "");
257 snprintf(message, sizeof(message),
258 "%s%s%s has been kicked off channel %s %s%s%s",
259 client_entry->nickname,
260 client_entry->server ? "@" : "",
261 client_entry->server ? client_entry->server : "",
262 conn->current_channel->channel_name,
263 tmp ? "(" : "", tmp ? tmp : "", tmp ? ")" : "");
267 case SILC_NOTIFY_TYPE_KILLED:
268 client_entry = va_arg(vp, SilcClientEntry);
269 tmp = va_arg(vp, char *);
270 channel_entry = va_arg(vp, SilcChannelEntry);
272 if (client_entry == conn->local_entry) {
273 snprintf(message, sizeof(message),
274 "You have been killed from the SILC Network %s%s%s",
275 tmp ? "(" : "", tmp ? tmp : "", tmp ? ")" : "");
277 snprintf(message, sizeof(message),
278 "%s%s%s has been killed from the SILC Network %s%s%s",
279 client_entry->nickname,
280 client_entry->server ? "@" : "",
281 client_entry->server ? client_entry->server : "",
282 tmp ? "(" : "", tmp ? tmp : "", tmp ? ")" : "");
290 silc_print(client, "*** %s", message);
293 /* Command handler. This function is called always in the command function.
294 If error occurs it will be called as well. `conn' is the associated
295 client connection. `cmd_context' is the command context that was
296 originally sent to the command. `success' is FALSE if error occured
297 during command. `command' is the command being processed. It must be
298 noted that this is not reply from server. This is merely called just
299 after application has called the command. Just to tell application
300 that the command really was processed. */
302 void silc_command(SilcClient client, SilcClientConnection conn,
303 SilcClientCommandContext cmd_context, int success,
306 SilcClientInternal app = (SilcClientInternal)client->application;
314 case SILC_COMMAND_QUIT:
315 app->screen->bottom_line->channel = NULL;
316 silc_screen_print_bottom_line(app->screen, 0);
319 case SILC_COMMAND_LEAVE:
321 if (!strncmp(conn->current_channel->channel_name, name, strlen(name))) {
322 app->screen->bottom_line->channel = NULL;
323 silc_screen_print_bottom_line(app->screen, 0);
331 /* We've resolved all clients we don't know about, now just print the
332 users from the channel on the screen. */
334 void silc_client_show_users(SilcClient client,
335 SilcClientConnection conn,
336 SilcClientEntry *clients,
337 unsigned int clients_count,
340 SilcChannelEntry channel = (SilcChannelEntry)context;
342 int k = 0, len1 = 0, len2 = 0;
343 char *name_list = NULL;
348 silc_list_start(channel->clients);
349 while ((chu = silc_list_get(channel->clients)) != SILC_LIST_END) {
350 char *m, *n = chu->client->nickname;
357 name_list = silc_realloc(name_list, sizeof(*name_list) * (len1 + 3));
359 m = silc_client_chumode_char(chu->mode);
361 memcpy(name_list + (len1 - len2), m, strlen(m));
366 memcpy(name_list + (len1 - len2), n, len2);
369 if (k == silc_list_count(channel->clients) - 1)
371 memcpy(name_list + len1, " ", 1);
376 client->ops->say(client, conn, "Users on %s: %s", channel->channel_name,
378 silc_free(name_list);
381 /* Command reply handler. This function is called always in the command reply
382 function. If error occurs it will be called as well. Normal scenario
383 is that it will be called after the received command data has been parsed
384 and processed. The function is used to pass the received command data to
387 `conn' is the associated client connection. `cmd_payload' is the command
388 payload data received from server and it can be ignored. It is provided
389 if the application would like to re-parse the received command data,
390 however, it must be noted that the data is parsed already by the library
391 thus the payload can be ignored. `success' is FALSE if error occured.
392 In this case arguments are not sent to the application. `command' is the
393 command reply being processed. The function has variable argument list
394 and each command defines the number and type of arguments it passes to the
395 application (on error they are not sent). */
397 void silc_command_reply(SilcClient client, SilcClientConnection conn,
398 SilcCommandPayload cmd_payload, int success,
399 SilcCommand command, SilcCommandStatus status, ...)
401 SilcClientInternal app = (SilcClientInternal)client->application;
405 va_start(vp, status);
409 case SILC_COMMAND_WHOIS:
411 char buf[1024], *nickname, *username, *realname;
413 unsigned int idle, mode;
416 if (status == SILC_STATUS_ERR_NO_SUCH_NICK) {
418 tmp = silc_argument_get_arg_type(silc_command_get_args(cmd_payload),
421 client->ops->say(client, conn, "%s: %s", tmp,
422 silc_client_command_status_message(status));
424 client->ops->say(client, conn, "%s",
425 silc_client_command_status_message(status));
432 (void)va_arg(vp, SilcClientEntry);
433 nickname = va_arg(vp, char *);
434 username = va_arg(vp, char *);
435 realname = va_arg(vp, char *);
436 channels = va_arg(vp, SilcBuffer);
437 mode = va_arg(vp, unsigned int);
438 idle = va_arg(vp, unsigned int);
440 memset(buf, 0, sizeof(buf));
443 len = strlen(nickname);
444 strncat(buf, nickname, len);
445 strncat(buf, " is ", 4);
449 strncat(buf, username, strlen(username));
453 strncat(buf, " (", 2);
454 strncat(buf, realname, strlen(realname));
455 strncat(buf, ")", 1);
458 client->ops->say(client, conn, "%s", buf);
461 SilcDList list = silc_channel_payload_parse_list(channels);
463 SilcChannelPayload entry;
465 memset(buf, 0, sizeof(buf));
466 strcat(buf, "on channels: ");
468 silc_dlist_start(list);
469 while ((entry = silc_dlist_get(list)) != SILC_LIST_END) {
470 char *m = silc_client_chumode_char(silc_channel_get_mode(entry));
471 unsigned int name_len;
472 char *name = silc_channel_get_name(entry, &name_len);
475 strncat(buf, m, strlen(m));
476 strncat(buf, name, name_len);
477 strncat(buf, " ", 1);
481 client->ops->say(client, conn, "%s", buf);
482 silc_channel_payload_list_free(list);
487 client->ops->say(client, conn, "%s is %s", nickname,
488 (mode & SILC_UMODE_SERVER_OPERATOR) ?
490 (mode & SILC_UMODE_ROUTER_OPERATOR) ?
491 "SILC Operator" : "[Unknown mode]");
493 if (idle && nickname)
494 client->ops->say(client, conn, "%s has been idle %d %s",
496 idle > 60 ? (idle / 60) : idle,
497 idle > 60 ? "minutes" : "seconds");
501 case SILC_COMMAND_WHOWAS:
503 char buf[1024], *nickname, *username, *realname;
506 if (status == SILC_STATUS_ERR_NO_SUCH_NICK) {
508 tmp = silc_argument_get_arg_type(silc_command_get_args(cmd_payload),
511 client->ops->say(client, conn, "%s: %s", tmp,
512 silc_client_command_status_message(status));
514 client->ops->say(client, conn, "%s",
515 silc_client_command_status_message(status));
522 (void)va_arg(vp, SilcClientEntry);
523 nickname = va_arg(vp, char *);
524 username = va_arg(vp, char *);
525 realname = va_arg(vp, char *);
527 memset(buf, 0, sizeof(buf));
530 len = strlen(nickname);
531 strncat(buf, nickname, len);
532 strncat(buf, " was ", 5);
536 strncat(buf, username, strlen(nickname));
540 strncat(buf, " (", 2);
541 strncat(buf, realname, strlen(realname));
542 strncat(buf, ")", 1);
545 client->ops->say(client, conn, "%s", buf);
549 case SILC_COMMAND_JOIN:
553 SilcBuffer client_id_list;
554 unsigned int list_count;
555 SilcChannelEntry channel;
560 app->screen->bottom_line->channel = va_arg(vp, char *);
561 channel = va_arg(vp, SilcChannelEntry);
562 mode = va_arg(vp, unsigned int);
563 (void)va_arg(vp, unsigned int);
564 (void)va_arg(vp, unsigned char *);
565 (void)va_arg(vp, unsigned char *);
566 (void)va_arg(vp, unsigned char *);
567 topic = va_arg(vp, char *);
568 (void)va_arg(vp, unsigned char *);
569 list_count = va_arg(vp, unsigned int);
570 client_id_list = va_arg(vp, SilcBuffer);
573 client->ops->say(client, conn, "Topic for %s: %s",
574 app->screen->bottom_line->channel, topic);
576 app->screen->bottom_line->channel_mode = silc_client_chmode(mode);
577 silc_screen_print_bottom_line(app->screen, 0);
579 /* Resolve the client information */
580 silc_client_get_clients_by_list(client, conn, list_count,
582 silc_client_show_users, channel);
586 case SILC_COMMAND_NICK:
588 SilcClientEntry entry;
593 entry = va_arg(vp, SilcClientEntry);
594 silc_say(client, conn, "Your current nickname is %s", entry->nickname);
595 app->screen->bottom_line->nickname = entry->nickname;
596 silc_screen_print_bottom_line(app->screen, 0);
600 case SILC_COMMAND_UMODE:
607 mode = va_arg(vp, unsigned int);
609 if (!mode && app->screen->bottom_line->umode) {
610 silc_free(app->screen->bottom_line->umode);
611 app->screen->bottom_line->umode = NULL;
614 if (mode & SILC_UMODE_SERVER_OPERATOR) {
615 if (app->screen->bottom_line->umode)
616 silc_free(app->screen->bottom_line->umode);
617 app->screen->bottom_line->umode = strdup("Server Operator");;
620 if (mode & SILC_UMODE_ROUTER_OPERATOR) {
621 if (app->screen->bottom_line->umode)
622 silc_free(app->screen->bottom_line->umode);
623 app->screen->bottom_line->umode = strdup("SILC Operator");;
626 silc_screen_print_bottom_line(app->screen, 0);
630 case SILC_COMMAND_OPER:
631 if (status == SILC_STATUS_OK) {
632 conn->local_entry->mode |= SILC_UMODE_SERVER_OPERATOR;
633 if (app->screen->bottom_line->umode)
634 silc_free(app->screen->bottom_line->umode);
635 app->screen->bottom_line->umode = strdup("Server Operator");;
636 silc_screen_print_bottom_line(app->screen, 0);
640 case SILC_COMMAND_SILCOPER:
641 if (status == SILC_STATUS_OK) {
642 conn->local_entry->mode |= SILC_UMODE_ROUTER_OPERATOR;
643 if (app->screen->bottom_line->umode)
644 silc_free(app->screen->bottom_line->umode);
645 app->screen->bottom_line->umode = strdup("SILC Operator");;
646 silc_screen_print_bottom_line(app->screen, 0);
650 case SILC_COMMAND_USERS:
654 silc_list_start(conn->current_channel->clients);
655 while ((chu = silc_list_get(conn->current_channel->clients))
657 if (chu->client == conn->local_entry) {
658 if (app->screen->bottom_line->mode)
659 silc_free(app->screen->bottom_line->mode);
660 app->screen->bottom_line->mode = silc_client_chumode_char(chu->mode);
661 silc_screen_print_bottom_line(app->screen, 0);
669 /* Called to indicate that connection was either successfully established
670 or connecting failed. This is also the first time application receives
671 the SilcClientConnection objecet which it should save somewhere. */
673 void silc_connect(SilcClient client, SilcClientConnection conn, int success)
675 SilcClientInternal app = (SilcClientInternal)client->application;
678 app->screen->bottom_line->connection = conn->remote_host;
679 silc_screen_print_bottom_line(app->screen, 0);
684 /* Called to indicate that connection was disconnected to the server. */
686 void silc_disconnect(SilcClient client, SilcClientConnection conn)
688 SilcClientInternal app = (SilcClientInternal)client->application;
690 app->screen->bottom_line->connection = NULL;
691 silc_screen_print_bottom_line(app->screen, 0);
695 /* Asks passphrase from user on the input line. */
697 unsigned char *silc_ask_passphrase(SilcClient client,
698 SilcClientConnection conn)
700 SilcClientInternal app = (SilcClientInternal)conn->client->application;
701 char pass1[256], pass2[256];
708 wattroff(app->screen->input_win, A_INVIS);
709 silc_screen_input_print_prompt(app->screen, "Passphrase: ");
710 wattron(app->screen->input_win, A_INVIS);
713 memset(pass1, 0, sizeof(pass1));
714 wgetnstr(app->screen->input_win, pass1, sizeof(pass1));
716 /* Print retype prompt */
717 wattroff(app->screen->input_win, A_INVIS);
718 silc_screen_input_print_prompt(app->screen, "Retype passphrase: ");
719 wattron(app->screen->input_win, A_INVIS);
722 memset(pass2, 0, sizeof(pass2));
723 wgetnstr(app->screen->input_win, pass2, sizeof(pass2));
725 if (!strncmp(pass1, pass2, strlen(pass2)))
731 ret = silc_calloc(strlen(pass1), sizeof(char));
732 memcpy(ret, pass1, strlen(pass1));
734 memset(pass1, 0, sizeof(pass1));
735 memset(pass2, 0, sizeof(pass2));
737 wattroff(app->screen->input_win, A_INVIS);
738 silc_screen_input_reset(app->screen);
743 /* Verifies received public key. If user decides to trust the key it is
744 saved as trusted server key for later use. If user does not trust the
745 key this returns FALSE. */
747 int silc_verify_server_key(SilcClient client,
748 SilcClientConnection conn,
749 unsigned char *pk, unsigned int pk_len,
750 SilcSKEPKType pk_type)
752 SilcSocketConnection sock = conn->sock;
755 char *hostname, *fingerprint;
759 hostname = sock->hostname ? sock->hostname : sock->ip;
761 if (pk_type != SILC_SKE_PK_TYPE_SILC) {
762 silc_say(client, conn, "We don't support server %s key type", hostname);
766 pw = getpwuid(getuid());
770 memset(filename, 0, sizeof(filename));
771 memset(file, 0, sizeof(file));
772 snprintf(file, sizeof(file) - 1, "serverkey_%s_%d.pub", hostname,
774 snprintf(filename, sizeof(filename) - 1, "%s/.silc/serverkeys/%s",
777 /* Check wheter this key already exists */
778 if (stat(filename, &st) < 0) {
780 fingerprint = silc_hash_fingerprint(NULL, pk, pk_len);
781 silc_say(client, conn, "Received server %s public key", hostname);
782 silc_say(client, conn, "Fingerprint for the server %s key is", hostname);
783 silc_say(client, conn, "%s", fingerprint);
784 silc_free(fingerprint);
786 /* Ask user to verify the key and save it */
787 if (silc_client_ask_yes_no(client,
788 "Would you like to accept the key (y/n)? "))
790 /* Save the key for future checking */
791 silc_pkcs_save_public_key_data(filename, pk, pk_len,
796 /* The key already exists, verify it. */
797 SilcPublicKey public_key;
798 unsigned char *encpk;
799 unsigned int encpk_len;
801 /* Load the key file */
802 if (!silc_pkcs_load_public_key(filename, &public_key,
804 if (!silc_pkcs_load_public_key(filename, &public_key,
805 SILC_PKCS_FILE_BIN)) {
806 fingerprint = silc_hash_fingerprint(NULL, pk, pk_len);
807 silc_say(client, conn, "Received server %s public key", hostname);
808 silc_say(client, conn, "Fingerprint for the server %s key is", hostname);
809 silc_say(client, conn, "%s", fingerprint);
810 silc_free(fingerprint);
811 silc_say(client, conn, "Could not load your local copy of the server %s key",
813 if (silc_client_ask_yes_no(client,
814 "Would you like to accept the key anyway (y/n)? "))
816 /* Save the key for future checking */
818 silc_pkcs_save_public_key_data(filename, pk, pk_len,
826 /* Encode the key data */
827 encpk = silc_pkcs_public_key_encode(public_key, &encpk_len);
829 fingerprint = silc_hash_fingerprint(NULL, pk, pk_len);
830 silc_say(client, conn, "Received server %s public key", hostname);
831 silc_say(client, conn, "Fingerprint for the server %s key is", hostname);
832 silc_say(client, conn, "%s", fingerprint);
833 silc_free(fingerprint);
834 silc_say(client, conn, "Your local copy of the server %s key is malformed",
836 if (silc_client_ask_yes_no(client,
837 "Would you like to accept the key anyway (y/n)? "))
839 /* Save the key for future checking */
841 silc_pkcs_save_public_key_data(filename, pk, pk_len,
849 if (memcmp(encpk, pk, encpk_len)) {
850 fingerprint = silc_hash_fingerprint(NULL, pk, pk_len);
851 silc_say(client, conn, "Received server %s public key", hostname);
852 silc_say(client, conn, "Fingerprint for the server %s key is", hostname);
853 silc_say(client, conn, "%s", fingerprint);
854 silc_free(fingerprint);
855 silc_say(client, conn, "Server %s key does not match with your local copy",
857 silc_say(client, conn, "It is possible that the key has expired or changed");
858 silc_say(client, conn, "It is also possible that some one is performing "
859 "man-in-the-middle attack");
861 /* Ask user to verify the key and save it */
862 if (silc_client_ask_yes_no(client,
863 "Would you like to accept the key anyway (y/n)? "))
865 /* Save the key for future checking */
867 silc_pkcs_save_public_key_data(filename, pk, pk_len,
872 silc_say(client, conn, "Will not accept server %s key", hostname);
876 /* Local copy matched */
880 silc_say(client, conn, "Will not accept server %s key", hostname);
884 /* Find authentication method and authentication data by hostname and
885 port. The hostname may be IP address as well. The found authentication
886 method and authentication data is returned to `auth_meth', `auth_data'
887 and `auth_data_len'. The function returns TRUE if authentication method
888 is found and FALSE if not. `conn' may be NULL. */
890 int silc_get_auth_method(SilcClient client, SilcClientConnection conn,
891 char *hostname, unsigned short port,
892 SilcProtocolAuthMeth *auth_meth,
893 unsigned char **auth_data,
894 unsigned int *auth_data_len)
896 SilcClientInternal app = (SilcClientInternal)client->application;
898 if (app->config->conns) {
899 SilcClientConfigSectionConnection *conn = NULL;
901 /* Check if we find a match from user configured connections */
902 conn = silc_client_config_find_connection(app->config,
906 /* Match found. Use the configured authentication method */
907 *auth_meth = conn->auth_meth;
909 if (conn->auth_data) {
910 *auth_data = strdup(conn->auth_data);
911 *auth_data_len = strlen(conn->auth_data);
921 /* Notifies application that failure packet was received. This is called
922 if there is some protocol active in the client. The `protocol' is the
923 protocol context. The `failure' is opaque pointer to the failure
924 indication. Note, that the `failure' is protocol dependant and application
925 must explicitly cast it to correct type. Usually `failure' is 32 bit
926 failure type (see protocol specs for all protocol failure types). */
928 void silc_failure(SilcClient client, SilcClientConnection conn,
929 SilcProtocol protocol, void *failure)
934 /* Asks whether the user would like to perform the key agreement protocol.
935 This is called after we have received an key agreement packet or an
936 reply to our key agreement packet. This returns TRUE if the user wants
937 the library to perform the key agreement protocol and FALSE if it is not
938 desired (application may start it later by calling the function
939 silc_client_perform_key_agreement). */
941 int silc_key_agreement(SilcClient client, SilcClientConnection conn,
942 SilcClientEntry client_entry, char *hostname,
944 SilcKeyAgreementCallback *completion,
951 /* SILC client operations */
952 SilcClientOperations ops = {
954 channel_message: silc_channel_message,
955 private_message: silc_private_message,
957 command: silc_command,
958 command_reply: silc_command_reply,
959 connect: silc_connect,
960 disconnect: silc_disconnect,
961 get_auth_method: silc_get_auth_method,
962 verify_server_key: silc_verify_server_key,
963 ask_passphrase: silc_ask_passphrase,
964 failure: silc_failure,
965 key_agreement: silc_key_agreement,