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 ||
417 status == SILC_STATUS_ERR_NO_SUCH_CLIENT_ID) {
419 tmp = silc_argument_get_arg_type(silc_command_get_args(cmd_payload),
422 client->ops->say(client, conn, "%s: %s", tmp,
423 silc_client_command_status_message(status));
425 client->ops->say(client, conn, "%s",
426 silc_client_command_status_message(status));
433 (void)va_arg(vp, SilcClientEntry);
434 nickname = va_arg(vp, char *);
435 username = va_arg(vp, char *);
436 realname = va_arg(vp, char *);
437 channels = va_arg(vp, SilcBuffer);
438 mode = va_arg(vp, unsigned int);
439 idle = va_arg(vp, unsigned int);
441 memset(buf, 0, sizeof(buf));
444 len = strlen(nickname);
445 strncat(buf, nickname, len);
446 strncat(buf, " is ", 4);
450 strncat(buf, username, strlen(username));
454 strncat(buf, " (", 2);
455 strncat(buf, realname, strlen(realname));
456 strncat(buf, ")", 1);
459 client->ops->say(client, conn, "%s", buf);
462 SilcDList list = silc_channel_payload_parse_list(channels);
464 SilcChannelPayload entry;
466 memset(buf, 0, sizeof(buf));
467 strcat(buf, "on channels: ");
469 silc_dlist_start(list);
470 while ((entry = silc_dlist_get(list)) != SILC_LIST_END) {
471 char *m = silc_client_chumode_char(silc_channel_get_mode(entry));
472 unsigned int name_len;
473 char *name = silc_channel_get_name(entry, &name_len);
476 strncat(buf, m, strlen(m));
477 strncat(buf, name, name_len);
478 strncat(buf, " ", 1);
482 client->ops->say(client, conn, "%s", buf);
483 silc_channel_payload_list_free(list);
488 client->ops->say(client, conn, "%s is %s", nickname,
489 (mode & SILC_UMODE_SERVER_OPERATOR) ?
491 (mode & SILC_UMODE_ROUTER_OPERATOR) ?
492 "SILC Operator" : "[Unknown mode]");
494 if (idle && nickname)
495 client->ops->say(client, conn, "%s has been idle %d %s",
497 idle > 60 ? (idle / 60) : idle,
498 idle > 60 ? "minutes" : "seconds");
502 case SILC_COMMAND_WHOWAS:
504 char buf[1024], *nickname, *username, *realname;
507 if (status == SILC_STATUS_ERR_NO_SUCH_NICK ||
508 status == SILC_STATUS_ERR_NO_SUCH_CLIENT_ID) {
510 tmp = silc_argument_get_arg_type(silc_command_get_args(cmd_payload),
513 client->ops->say(client, conn, "%s: %s", tmp,
514 silc_client_command_status_message(status));
516 client->ops->say(client, conn, "%s",
517 silc_client_command_status_message(status));
524 (void)va_arg(vp, SilcClientEntry);
525 nickname = va_arg(vp, char *);
526 username = va_arg(vp, char *);
527 realname = va_arg(vp, char *);
529 memset(buf, 0, sizeof(buf));
532 len = strlen(nickname);
533 strncat(buf, nickname, len);
534 strncat(buf, " was ", 5);
538 strncat(buf, username, strlen(nickname));
542 strncat(buf, " (", 2);
543 strncat(buf, realname, strlen(realname));
544 strncat(buf, ")", 1);
547 client->ops->say(client, conn, "%s", buf);
551 case SILC_COMMAND_JOIN:
555 SilcBuffer client_id_list;
556 unsigned int list_count;
557 SilcChannelEntry channel;
562 app->screen->bottom_line->channel = va_arg(vp, char *);
563 channel = va_arg(vp, SilcChannelEntry);
564 mode = va_arg(vp, unsigned int);
565 (void)va_arg(vp, unsigned int);
566 (void)va_arg(vp, unsigned char *);
567 (void)va_arg(vp, unsigned char *);
568 (void)va_arg(vp, unsigned char *);
569 topic = va_arg(vp, char *);
570 (void)va_arg(vp, unsigned char *);
571 list_count = va_arg(vp, unsigned int);
572 client_id_list = va_arg(vp, SilcBuffer);
575 client->ops->say(client, conn, "Topic for %s: %s",
576 app->screen->bottom_line->channel, topic);
578 app->screen->bottom_line->channel_mode = silc_client_chmode(mode);
579 silc_screen_print_bottom_line(app->screen, 0);
581 /* Resolve the client information */
582 silc_client_get_clients_by_list(client, conn, list_count,
584 silc_client_show_users, channel);
588 case SILC_COMMAND_NICK:
590 SilcClientEntry entry;
595 entry = va_arg(vp, SilcClientEntry);
596 silc_say(client, conn, "Your current nickname is %s", entry->nickname);
597 app->screen->bottom_line->nickname = entry->nickname;
598 silc_screen_print_bottom_line(app->screen, 0);
602 case SILC_COMMAND_LIST:
605 unsigned int usercount;
606 unsigned char buf[256], tmp[16];
612 (void)va_arg(vp, SilcChannelEntry);
613 name = va_arg(vp, char *);
614 topic = va_arg(vp, char *);
615 usercount = va_arg(vp, unsigned int);
617 if (status == SILC_STATUS_LIST_START ||
618 status == SILC_STATUS_OK)
619 silc_say(client, conn,
620 " Channel Users Topic");
622 memset(buf, 0, sizeof(buf));
623 strncat(buf, " ", 2);
625 strncat(buf, name, len > 40 ? 40 : len);
627 for (i = 0; i < 40 - len; i++)
631 memset(tmp, 0, sizeof(tmp));
633 snprintf(tmp, sizeof(tmp), "%d", usercount);
638 for (i = 0; i < 10 - len; i++)
644 strncat(buf, topic, len);
647 silc_say(client, conn, "%s", buf);
651 case SILC_COMMAND_UMODE:
658 mode = va_arg(vp, unsigned int);
660 if (!mode && app->screen->bottom_line->umode) {
661 silc_free(app->screen->bottom_line->umode);
662 app->screen->bottom_line->umode = NULL;
665 if (mode & SILC_UMODE_SERVER_OPERATOR) {
666 if (app->screen->bottom_line->umode)
667 silc_free(app->screen->bottom_line->umode);
668 app->screen->bottom_line->umode = strdup("Server Operator");;
671 if (mode & SILC_UMODE_ROUTER_OPERATOR) {
672 if (app->screen->bottom_line->umode)
673 silc_free(app->screen->bottom_line->umode);
674 app->screen->bottom_line->umode = strdup("SILC Operator");;
677 silc_screen_print_bottom_line(app->screen, 0);
681 case SILC_COMMAND_OPER:
682 if (status == SILC_STATUS_OK) {
683 conn->local_entry->mode |= SILC_UMODE_SERVER_OPERATOR;
684 if (app->screen->bottom_line->umode)
685 silc_free(app->screen->bottom_line->umode);
686 app->screen->bottom_line->umode = strdup("Server Operator");;
687 silc_screen_print_bottom_line(app->screen, 0);
691 case SILC_COMMAND_SILCOPER:
692 if (status == SILC_STATUS_OK) {
693 conn->local_entry->mode |= SILC_UMODE_ROUTER_OPERATOR;
694 if (app->screen->bottom_line->umode)
695 silc_free(app->screen->bottom_line->umode);
696 app->screen->bottom_line->umode = strdup("SILC Operator");;
697 silc_screen_print_bottom_line(app->screen, 0);
701 case SILC_COMMAND_USERS:
705 silc_list_start(conn->current_channel->clients);
706 while ((chu = silc_list_get(conn->current_channel->clients))
708 if (chu->client == conn->local_entry) {
709 if (app->screen->bottom_line->mode)
710 silc_free(app->screen->bottom_line->mode);
711 app->screen->bottom_line->mode = silc_client_chumode_char(chu->mode);
712 silc_screen_print_bottom_line(app->screen, 0);
720 /* Called to indicate that connection was either successfully established
721 or connecting failed. This is also the first time application receives
722 the SilcClientConnection objecet which it should save somewhere. */
724 void silc_connect(SilcClient client, SilcClientConnection conn, int success)
726 SilcClientInternal app = (SilcClientInternal)client->application;
729 app->screen->bottom_line->connection = conn->remote_host;
730 silc_screen_print_bottom_line(app->screen, 0);
735 /* Called to indicate that connection was disconnected to the server. */
737 void silc_disconnect(SilcClient client, SilcClientConnection conn)
739 SilcClientInternal app = (SilcClientInternal)client->application;
741 app->screen->bottom_line->connection = NULL;
742 silc_screen_print_bottom_line(app->screen, 0);
746 /* Asks passphrase from user on the input line. */
748 unsigned char *silc_ask_passphrase(SilcClient client,
749 SilcClientConnection conn)
751 SilcClientInternal app = (SilcClientInternal)conn->client->application;
752 char pass1[256], pass2[256];
759 wattroff(app->screen->input_win, A_INVIS);
760 silc_screen_input_print_prompt(app->screen, "Passphrase: ");
761 wattron(app->screen->input_win, A_INVIS);
764 memset(pass1, 0, sizeof(pass1));
765 wgetnstr(app->screen->input_win, pass1, sizeof(pass1));
767 /* Print retype prompt */
768 wattroff(app->screen->input_win, A_INVIS);
769 silc_screen_input_print_prompt(app->screen, "Retype passphrase: ");
770 wattron(app->screen->input_win, A_INVIS);
773 memset(pass2, 0, sizeof(pass2));
774 wgetnstr(app->screen->input_win, pass2, sizeof(pass2));
776 if (!strncmp(pass1, pass2, strlen(pass2)))
782 ret = silc_calloc(strlen(pass1), sizeof(char));
783 memcpy(ret, pass1, strlen(pass1));
785 memset(pass1, 0, sizeof(pass1));
786 memset(pass2, 0, sizeof(pass2));
788 wattroff(app->screen->input_win, A_INVIS);
789 silc_screen_input_reset(app->screen);
794 /* Verifies received public key. If user decides to trust the key it is
795 saved as trusted server key for later use. If user does not trust the
796 key this returns FALSE. */
798 int silc_verify_server_key(SilcClient client,
799 SilcClientConnection conn,
800 unsigned char *pk, unsigned int pk_len,
801 SilcSKEPKType pk_type)
803 SilcSocketConnection sock = conn->sock;
806 char *hostname, *fingerprint;
810 hostname = sock->hostname ? sock->hostname : sock->ip;
812 if (pk_type != SILC_SKE_PK_TYPE_SILC) {
813 silc_say(client, conn, "We don't support server %s key type", hostname);
817 pw = getpwuid(getuid());
821 memset(filename, 0, sizeof(filename));
822 memset(file, 0, sizeof(file));
823 snprintf(file, sizeof(file) - 1, "serverkey_%s_%d.pub", hostname,
825 snprintf(filename, sizeof(filename) - 1, "%s/.silc/serverkeys/%s",
828 /* Check wheter this key already exists */
829 if (stat(filename, &st) < 0) {
831 fingerprint = silc_hash_fingerprint(NULL, pk, pk_len);
832 silc_say(client, conn, "Received server %s public key", hostname);
833 silc_say(client, conn, "Fingerprint for the server %s key is", hostname);
834 silc_say(client, conn, "%s", fingerprint);
835 silc_free(fingerprint);
837 /* Ask user to verify the key and save it */
838 if (silc_client_ask_yes_no(client,
839 "Would you like to accept the key (y/n)? "))
841 /* Save the key for future checking */
842 silc_pkcs_save_public_key_data(filename, pk, pk_len,
847 /* The key already exists, verify it. */
848 SilcPublicKey public_key;
849 unsigned char *encpk;
850 unsigned int encpk_len;
852 /* Load the key file */
853 if (!silc_pkcs_load_public_key(filename, &public_key,
855 if (!silc_pkcs_load_public_key(filename, &public_key,
856 SILC_PKCS_FILE_BIN)) {
857 fingerprint = silc_hash_fingerprint(NULL, pk, pk_len);
858 silc_say(client, conn, "Received server %s public key", hostname);
859 silc_say(client, conn, "Fingerprint for the server %s key is", hostname);
860 silc_say(client, conn, "%s", fingerprint);
861 silc_free(fingerprint);
862 silc_say(client, conn, "Could not load your local copy of the server %s key",
864 if (silc_client_ask_yes_no(client,
865 "Would you like to accept the key anyway (y/n)? "))
867 /* Save the key for future checking */
869 silc_pkcs_save_public_key_data(filename, pk, pk_len,
877 /* Encode the key data */
878 encpk = silc_pkcs_public_key_encode(public_key, &encpk_len);
880 fingerprint = silc_hash_fingerprint(NULL, pk, pk_len);
881 silc_say(client, conn, "Received server %s public key", hostname);
882 silc_say(client, conn, "Fingerprint for the server %s key is", hostname);
883 silc_say(client, conn, "%s", fingerprint);
884 silc_free(fingerprint);
885 silc_say(client, conn, "Your local copy of the server %s key is malformed",
887 if (silc_client_ask_yes_no(client,
888 "Would you like to accept the key anyway (y/n)? "))
890 /* Save the key for future checking */
892 silc_pkcs_save_public_key_data(filename, pk, pk_len,
900 if (memcmp(encpk, pk, encpk_len)) {
901 fingerprint = silc_hash_fingerprint(NULL, pk, pk_len);
902 silc_say(client, conn, "Received server %s public key", hostname);
903 silc_say(client, conn, "Fingerprint for the server %s key is", hostname);
904 silc_say(client, conn, "%s", fingerprint);
905 silc_free(fingerprint);
906 silc_say(client, conn, "Server %s key does not match with your local copy",
908 silc_say(client, conn, "It is possible that the key has expired or changed");
909 silc_say(client, conn, "It is also possible that some one is performing "
910 "man-in-the-middle attack");
912 /* Ask user to verify the key and save it */
913 if (silc_client_ask_yes_no(client,
914 "Would you like to accept the key anyway (y/n)? "))
916 /* Save the key for future checking */
918 silc_pkcs_save_public_key_data(filename, pk, pk_len,
923 silc_say(client, conn, "Will not accept server %s key", hostname);
927 /* Local copy matched */
931 silc_say(client, conn, "Will not accept server %s key", hostname);
935 /* Find authentication method and authentication data by hostname and
936 port. The hostname may be IP address as well. The found authentication
937 method and authentication data is returned to `auth_meth', `auth_data'
938 and `auth_data_len'. The function returns TRUE if authentication method
939 is found and FALSE if not. `conn' may be NULL. */
941 int silc_get_auth_method(SilcClient client, SilcClientConnection conn,
942 char *hostname, unsigned short port,
943 SilcProtocolAuthMeth *auth_meth,
944 unsigned char **auth_data,
945 unsigned int *auth_data_len)
947 SilcClientInternal app = (SilcClientInternal)client->application;
949 if (app->config->conns) {
950 SilcClientConfigSectionConnection *conn = NULL;
952 /* Check if we find a match from user configured connections */
953 conn = silc_client_config_find_connection(app->config,
957 /* Match found. Use the configured authentication method */
958 *auth_meth = conn->auth_meth;
960 if (conn->auth_data) {
961 *auth_data = strdup(conn->auth_data);
962 *auth_data_len = strlen(conn->auth_data);
972 /* Notifies application that failure packet was received. This is called
973 if there is some protocol active in the client. The `protocol' is the
974 protocol context. The `failure' is opaque pointer to the failure
975 indication. Note, that the `failure' is protocol dependant and application
976 must explicitly cast it to correct type. Usually `failure' is 32 bit
977 failure type (see protocol specs for all protocol failure types). */
979 void silc_failure(SilcClient client, SilcClientConnection conn,
980 SilcProtocol protocol, void *failure)
985 /* Asks whether the user would like to perform the key agreement protocol.
986 This is called after we have received an key agreement packet or an
987 reply to our key agreement packet. This returns TRUE if the user wants
988 the library to perform the key agreement protocol and FALSE if it is not
989 desired (application may start it later by calling the function
990 silc_client_perform_key_agreement). */
992 int silc_key_agreement(SilcClient client, SilcClientConnection conn,
993 SilcClientEntry client_entry, char *hostname,
995 SilcKeyAgreementCallback *completion,
1002 /* SILC client operations */
1003 SilcClientOperations ops = {
1005 channel_message: silc_channel_message,
1006 private_message: silc_private_message,
1007 notify: silc_notify,
1008 command: silc_command,
1009 command_reply: silc_command_reply,
1010 connect: silc_connect,
1011 disconnect: silc_disconnect,
1012 get_auth_method: silc_get_auth_method,
1013 verify_server_key: silc_verify_server_key,
1014 ask_passphrase: silc_ask_passphrase,
1015 failure: silc_failure,
1016 key_agreement: silc_key_agreement,