5 Author: Pekka Riikonen <priikone@silcnet.org>
7 Copyright (C) 2000 - 2001 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 /****h* silcclient/SilcClientAPI
25 * This interface defines the SILC Client Library API for the application.
26 * The client operations are defined first. These are callback functions that
27 * the application MUST implement since the library may call the functions
28 * at any time. At the end of file is the API for the application that
29 * it can use from the library. This is the only file that the application
30 * may include from the SIlC Client Library.
32 * o SILC Client Operations
34 * These functions must be implemented by the application calling the SILC
35 * client library. The client library can call these functions at any time.
37 * To use this structure: define a static SilcClientOperations variable,
38 * fill it and pass its pointer to silc_client_alloc function.
40 * o SILC Client Library API
42 * This is the API that is published by the SILC Client Library for the
43 * applications. These functions are implemented in the SILC Client Library.
44 * Application may freely call these functions from the library.
46 * Please, refer to the README file in this directory for the directions
47 * of how to use the SILC Client Library.
54 #include "clientlibincludes.h"
56 /* General definitions */
58 /****d* silcclient/SilcClientAPI/SilcKeyAgreementStatus
62 * typedef enum { ... } SilcKeyAgreementStatus;
66 * Key agreement status types indicating the status of the key
67 * agreement protocol. These types are returned to the application
68 * in the SilcKeyAgreementCallback callback function.
73 SILC_KEY_AGREEMENT_OK, /* Everything is Ok */
74 SILC_KEY_AGREEMENT_ERROR, /* Unknown error occurred */
75 SILC_KEY_AGREEMENT_FAILURE, /* The protocol failed */
76 SILC_KEY_AGREEMENT_TIMEOUT, /* The protocol timeout */
77 } SilcKeyAgreementStatus;
80 /****f* silcclient/SilcClientAPI/SilcKeyAgreementCallback
84 * typedef void (*SilcKeyAgreementCallback)(SilcClient client,
85 * SilcClientConnection conn,
86 * SilcClientEntry client_entry,
87 * SilcKeyAgreementStatus status,
88 * SilcSKEKeyMaterial *key,
93 * Key agreement callback that is called after the key agreement protocol
94 * has been performed. This is called also if error occurred during the
95 * key agreement protocol. The `key' is the allocated key material and
96 * the caller is responsible of freeing it. The `key' is NULL if error
97 * has occurred. The application can freely use the `key' to whatever
98 * purpose it needs. See lib/silcske/silcske.h for the definition of
99 * the SilcSKEKeyMaterial structure.
102 typedef void (*SilcKeyAgreementCallback)(SilcClient client,
103 SilcClientConnection conn,
104 SilcClientEntry client_entry,
105 SilcKeyAgreementStatus status,
106 SilcSKEKeyMaterial *key,
109 /****s* silcclient/SilcClientAPI/SilcPrivateMessageKeys
113 * typedef struct { ... } SilcPrivateMessageKeys;
117 * Structure to hold the list of private message keys. The array of this
118 * structure is returned by the silc_client_list_private_message_keys
124 SilcClientEntry client_entry; /* The remote client entry */
125 char *cipher; /* The cipher name */
126 unsigned char *key; /* The original key, If the appliation
127 provided it. This is NULL if the
128 library generated the key or if
129 the SKE key material was used. */
130 uint32 key_len; /* The key length */
131 } *SilcPrivateMessageKeys;
135 /****f* silcclient/SilcClientAPI/SilcAskPassphrase
139 * typedef void (*SilcAskPassphrase)(unsigned char *passphrase,
140 * uint32 passphrase_len,
145 * Ask passphrase callback. This is called by the application when the
146 * library calls `ask_passphrase' client operation. The callback delivers
147 * the passphrase to the library.
150 typedef void (*SilcAskPassphrase)(unsigned char *passphrase,
151 uint32 passphrase_len,
154 /****f* silcclient/SilcClientAPI/SilcVerifyPublicKey
158 * typedef void (*SilcVerifyPublicKey)(bool success, void *context);
162 * Public key (or certificate) verification callback. This is called
163 * by the application to indicate that the public key verification was
164 * either success or failure.
167 typedef void (*SilcVerifyPublicKey)(bool success, void *context);
169 /****f* silcclient/SilcClientAPI/SilcGetAuthMeth
173 * typedef void (*SilcGetAuthMeth)(bool success,
174 * SilcProtocolAuthMeth auth_meth,
175 * const unsigned char *auth_data,
176 * uint32 auth_data_len, void *context);
180 * Authentication method resolving callback. This is called by the
181 * application to return the resolved authentication method. The client
182 * library has called the get_auth_method client operation and given
183 * this function pointer as argument. The `success' will indicate whether
184 * the authentication method could be resolved. The `auth_meth' is the
185 * resolved authentication method. The `auth_data' and the `auth_data_len'
186 * are the resolved authentication data. The `context' is the libary's
187 * context sent to the get_auth_method client operation.
190 typedef void (*SilcGetAuthMeth)(bool success,
191 SilcProtocolAuthMeth auth_meth,
192 const unsigned char *auth_data,
193 uint32 auth_data_len, void *context);
195 /****d* silcclient/SilcClientAPI/SilcClientMessageType
199 * typedef enum { ... } SilcClientMessageType;
203 * Different message types for `say' client operation. The application
204 * may filter the message sent by the library according this type.
209 SILC_CLIENT_MESSAGE_INFO, /* Informational */
210 SILC_CLIENT_MESSAGE_WARNING, /* Warning */
211 SILC_CLIENT_MESSAGE_ERROR, /* Error */
212 SILC_CLIENT_MESSAGE_AUDIT, /* Auditable */
213 } SilcClientMessageType;
216 /****s* silcclient/SilcClientAPI/SilcClientOperations
220 * typedef struct { ... } SilcClientOperations;
224 * SILC Client Operations. These must be implemented by the application.
225 * The Client library may call any of these routines at any time. The
226 * routines are used to deliver certain information to the application
227 * or from the application to the client library.
232 /* Message sent to the application by library. `conn' associates the
233 message to a specific connection. `conn', however, may be NULL.
234 The `type' indicates the type of the message sent by the library.
235 The applicationi can for example filter the message according the
237 void (*say)(SilcClient client, SilcClientConnection conn,
238 SilcClientMessageType type, char *msg, ...);
240 /* Message for a channel. The `sender' is the sender of the message
241 The `channel' is the channel. */
242 void (*channel_message)(SilcClient client, SilcClientConnection conn,
243 SilcClientEntry sender, SilcChannelEntry channel,
244 SilcMessageFlags flags, char *msg);
246 /* Private message to the client. The `sender' is the sender of the
248 void (*private_message)(SilcClient client, SilcClientConnection conn,
249 SilcClientEntry sender, SilcMessageFlags flags,
252 /* Notify message to the client. The notify arguments are sent in the
253 same order as servers sends them. The arguments are same as received
254 from the server except for ID's. If ID is received application receives
255 the corresponding entry to the ID. For example, if Client ID is received
256 application receives SilcClientEntry. Also, if the notify type is
257 for channel the channel entry is sent to application (even if server
258 does not send it because client library gets the channel entry from
259 the Channel ID in the packet's header). */
260 void (*notify)(SilcClient client, SilcClientConnection conn,
261 SilcNotifyType type, ...);
263 /* Command handler. This function is called always in the command function.
264 If error occurs it will be called as well. `conn' is the associated
265 client connection. `cmd_context' is the command context that was
266 originally sent to the command. `success' is FALSE if error occurred
267 during command. `command' is the command being processed. It must be
268 noted that this is not reply from server. This is merely called just
269 after application has called the command. Just to tell application
270 that the command really was processed. */
271 void (*command)(SilcClient client, SilcClientConnection conn,
272 SilcClientCommandContext cmd_context, int success,
273 SilcCommand command);
275 /* Command reply handler. This function is called always in the command reply
276 function. If error occurs it will be called as well. Normal scenario
277 is that it will be called after the received command data has been parsed
278 and processed. The function is used to pass the received command data to
281 `conn' is the associated client connection. `cmd_payload' is the command
282 payload data received from server and it can be ignored. It is provided
283 if the application would like to re-parse the received command data,
284 however, it must be noted that the data is parsed already by the library
285 thus the payload can be ignored. `success' is FALSE if error occurred.
286 In this case arguments are not sent to the application. The `status' is
287 the command reply status server returned. The `command' is the command
288 reply being processed. The function has variable argument list and each
289 command defines the number and type of arguments it passes to the
290 application (on error they are not sent). */
291 void (*command_reply)(SilcClient client, SilcClientConnection conn,
292 SilcCommandPayload cmd_payload, int success,
293 SilcCommand command, SilcCommandStatus status, ...);
295 /* Called to indicate that connection was either successfully established
296 or connecting failed. This is also the first time application receives
297 the SilcClientConnection objecet which it should save somewhere.
298 If the `success' is FALSE the application must always call the function
299 silc_client_close_connection. */
300 void (*connect)(SilcClient client, SilcClientConnection conn, int success);
302 /* Called to indicate that connection was disconnected to the server. */
303 void (*disconnect)(SilcClient client, SilcClientConnection conn);
305 /* Find authentication method and authentication data by hostname and
306 port. The hostname may be IP address as well. When the authentication
307 method has been resolved the `completion' callback with the found
308 authentication method and authentication data is called. The `conn'
310 void (*get_auth_method)(SilcClient client, SilcClientConnection conn,
311 char *hostname, uint16 port,
312 SilcGetAuthMeth completion, void *context);
314 /* Verifies received public key. The `conn_type' indicates which entity
315 (server, client etc.) has sent the public key. If user decides to trust
316 the key may be saved as trusted public key for later use. The
317 `completion' must be called after the public key has been verified. */
318 void (*verify_public_key)(SilcClient client, SilcClientConnection conn,
319 SilcSocketType conn_type, unsigned char *pk,
320 uint32 pk_len, SilcSKEPKType pk_type,
321 SilcVerifyPublicKey completion, void *context);
323 /* Ask (interact, that is) a passphrase from user. The passphrase is
324 returned to the library by calling the `completion' callback with
326 void (*ask_passphrase)(SilcClient client, SilcClientConnection conn,
327 SilcAskPassphrase completion, void *context);
329 /* Notifies application that failure packet was received. This is called
330 if there is some protocol active in the client. The `protocol' is the
331 protocol context. The `failure' is opaque pointer to the failure
332 indication. Note, that the `failure' is protocol dependant and
333 application must explicitly cast it to correct type. Usually `failure'
334 is 32 bit failure type (see protocol specs for all protocol failure
336 void (*failure)(SilcClient client, SilcClientConnection conn,
337 SilcProtocol protocol, void *failure);
339 /* Asks whether the user would like to perform the key agreement protocol.
340 This is called after we have received an key agreement packet or an
341 reply to our key agreement packet. This returns TRUE if the user wants
342 the library to perform the key agreement protocol and FALSE if it is not
343 desired (application may start it later by calling the function
344 silc_client_perform_key_agreement). If TRUE is returned also the
345 `completion' and `context' arguments must be set by the application. */
346 int (*key_agreement)(SilcClient client, SilcClientConnection conn,
347 SilcClientEntry client_entry, const char *hostname,
348 uint16 port, SilcKeyAgreementCallback *completion,
351 /* Notifies application that file transfer protocol session is being
352 requested by the remote client indicated by the `client_entry' from
353 the `hostname' and `port'. The `session_id' is the file transfer
354 session and it can be used to either accept or reject the file
355 transfer request, by calling the silc_client_file_receive or
356 silc_client_file_close, respectively. */
357 void (*ftp)(SilcClient client, SilcClientConnection conn,
358 SilcClientEntry client_entry, uint32 session_id,
359 const char *hostname, uint16 port);
360 } SilcClientOperations;
363 /****f* silcclient/SilcClientAPI/SilcNicknameFormatParse
367 * typedef void (*SilcNicknameFormatParse)(const char *nickname,
368 * char **ret_nickname);
372 * A callback function provided by the application for the library in
373 * SilcClientParams structure. This function parses the formatted
374 * nickname string `nickname' and returns the true nickname to the
375 * `ret_nickname' pointer. The library can call this function at
379 typedef void (*SilcNicknameFormatParse)(const char *nickname,
380 char **ret_nickname);
382 /****s* silcclient/SilcClientAPI/SilcClientParams
386 * typedef struct { ... } SilcClientParams;
390 * Client parameters. This can be filled with proper values and
391 * given as argument to the silc_client_alloc function. The structure
392 * hold various parameters which affects the function of the client.
397 /* Number of maximum tasks the client library's scheduler can handle.
398 If set to zero, the default value will be used (200). For WIN32
399 systems this should be set to 64 as it is the hard limit dictated
403 /* Rekey timeout in seconds. The client will perform rekey in this
404 time interval. If set to zero, the default value will be used. */
405 unsigned int rekey_secs;
407 /* Connection authentication method request timeout. If server does not
408 reply back the current authentication method when we've requested it
409 in this time interval we'll assume the reply will not come at all.
410 If set to zero, the default value (2 seconds) will be used. */
411 unsigned int connauth_request_secs;
413 /* Nickname format string. This can be used to order the client library
414 to save the nicknames in the library in a certain format. Since
415 nicknames are not unique in SILC it is possible to have multiple same
416 nicknames. Using this format string it is possible to order the library
417 to separate the multiple same nicknames from each other. The format
418 types are defined below and they can appear in any order in the format
419 string. If this is NULL then default format is used which is the
420 default nickname without anything else. The string MUST be NULL
423 Following format types are available:
425 %n nickname - the real nickname returned by the server (mandatory)
426 %h hostname - the stripped hostname of the client
427 %H full hostname - the full hostname of the client
428 %s server name - the server name the client is connected
429 %S full server - the full server name the client is connected
430 %a number - ascending number in case there are several
431 same nicknames (fe. nick@host and nick@host2)
433 Example format strings: "%n@%h%a" (fe. nick@host, nick@host2)
434 "%a!%n@%s" (fe. nick@server, 2!nick@server)
435 "%n@%H" (fe. nick@host.domain.com)
437 By default this format is employed to the nicknames by the libary
438 only when there appears multiple same nicknames. If the library has
439 only one nickname cached the nickname is saved as is and without the
440 defined format. If you want always to save the nickname in the defined
441 format set the boolean field `nickname_force_format' to value TRUE.
443 char nickname_format[32];
445 /* If this is set to TRUE then the `nickname_format' is employed to all
446 saved nicknames even if there are no multiple same nicknames in the
447 cache. By default this is FALSE, which means that the `nickname_format'
448 is employed only if the library will receive a nickname that is
449 already saved in the cache. It is recommended to leave this to FALSE
451 bool nickname_force_format;
453 /* A callback function provided by the application for the library to
454 parse the nickname from the formatted nickname string. Even though
455 the libary formats the nicknames the application knows generally the
456 format better so this function should be provided for the library
457 if the application sets the `nickname_format' field. The library
458 will call this to get the true nickname from the provided formatted
459 nickname string whenever it needs the true nickname. */
460 SilcNicknameFormatParse nickname_parse;
466 /* Initialization functions (client.c) */
468 /****f* silcclient/SilcClientAPI/silc_client_alloc
472 * SilcClient silc_client_alloc(SilcClientOperations *ops,
473 * SilcClientParams *params,
475 * const char *silc_version);
479 * Allocates new client object. This has to be done before client may
480 * work. After calling this one must call silc_client_init to initialize
481 * the client. The `application' is application specific user data pointer
482 * and caller must free it. The `silc_version' is the application version
483 * that will be used to compare against remote host's (usually a server)
487 SilcClient silc_client_alloc(SilcClientOperations *ops,
488 SilcClientParams *params,
490 const char *silc_version);
492 /****f* silcclient/SilcClientAPI/silc_client_free
496 * void silc_client_free(SilcClient client);
500 * Frees client object and its internals. The execution of the client
501 * should be stopped with silc_client_stop function before calling
505 void silc_client_free(SilcClient client);
507 /****f* silcclient/SilcClientAPI/silc_client_init
511 * int silc_client_init(SilcClient client);
515 * Initializes the client. This makes all the necessary steps to make
516 * the client ready to be run. One must call silc_client_run to run the
517 * client. Returns FALSE if error occurred, TRUE otherwise.
520 int silc_client_init(SilcClient client);
522 /****f* silcclient/SilcClientAPI/silc_client_run
526 * void silc_client_run(SilcClient client);
530 * Runs the client. This starts the scheduler from the utility library.
531 * When this functions returns the execution of the appliation is over.
534 void silc_client_run(SilcClient client);
536 /****f* silcclient/SilcClientAPI/silc_client_run_one
540 * void silc_client_run_one(SilcClient client);
544 * Runs the client and returns immeadiately. This function is used when
545 * the SILC Client object indicated by the `client' is run under some
546 * other scheduler, or event loop or main loop. On GUI applications,
547 * for example this may be desired to used to run the client under the
548 * GUI application's main loop. Typically the GUI application would
549 * register an idle task that calls this function multiple times in
550 * a second to quickly process the SILC specific data.
553 void silc_client_run_one(SilcClient client);
555 /****f* silcclient/SilcClientAPI/silc_client_stop
559 * void silc_client_stop(SilcClient client);
563 * Stops the client. This is called to stop the client and thus to stop
564 * the program. The client context must be freed with the silc_client_free
568 void silc_client_stop(SilcClient client);
571 /* Connecting functions (client.c) */
573 /****f* silcclient/SilcClientAPI/silc_client_connect_to_server
577 * int silc_client_connect_to_server(SilcClient client, int port,
578 * char *host, void *context);
582 * Connects to remote server. This is the main routine used to connect
583 * to SILC server. Returns -1 on error and the created socket otherwise.
584 * The `context' is user context that is saved into the SilcClientConnection
585 * that is created after the connection is created. Note that application
586 * may handle the connecting process outside the library. If this is the
587 * case then this function is not used at all. When the connecting is
588 * done the `connect' client operation is called.
591 int silc_client_connect_to_server(SilcClient client, int port,
592 char *host, void *context);
594 /****f* silcclient/SilcClientAPI/silc_client_add_connection
598 * SilcClientConnection silc_client_add_connection(SilcClient client,
605 * Allocates and adds new connection to the client. This adds the allocated
606 * connection to the connection table and returns a pointer to it. A client
607 * can have multiple connections to multiple servers. Every connection must
608 * be added to the client using this function. User data `context' may
609 * be sent as argument. This function is normally used only if the
610 * application performed the connecting outside the library. The library
611 * however may use this internally.
614 SilcClientConnection silc_client_add_connection(SilcClient client,
619 /****f* silcclient/SilcClientAPI/silc_client_del_connection
623 * void silc_client_del_connection(SilcClient client,
624 * SilcClientConnection conn);
628 * Removes connection from client. Frees all memory. The library
629 * call this function automatically for all connection contexts.
630 * The application however may free the connection contexts it has
634 void silc_client_del_connection(SilcClient client, SilcClientConnection conn);
636 /****f* silcclient/SilcClientAPI/silc_client_add_socket
640 * void silc_client_add_socket(SilcClient client,
641 * SilcSocketConnection sock);
645 * Adds listener socket to the listener sockets table. This function is
646 * used to add socket objects that are listeners to the client. This should
647 * not be used to add other connection objects.
650 void silc_client_add_socket(SilcClient client, SilcSocketConnection sock);
652 /****f* silcclient/SilcClientAPI/silc_client_del_socket
656 * void silc_client_del_socket(SilcClient client,
657 * SilcSocketConnection sock);
661 * Deletes listener socket from the listener sockets table. If the
662 * application has added a socket with silc_client_add_socket it must
663 * also free it using this function.
666 void silc_client_del_socket(SilcClient client, SilcSocketConnection sock);
668 /****f* silcclient/SilcClientAPI/silc_client_start_key_exchange
672 * int silc_client_start_key_exchange(SilcClient client,
673 * SilcClientConnection conn,
678 * Start SILC Key Exchange (SKE) protocol to negotiate shared secret
679 * key material between client and server. This function can be called
680 * directly if application is performing its own connecting and does not
681 * use the connecting provided by this library. This function is normally
682 * used only if the application performed the connecting outside the
683 * library. The library however may use this internally. Returns FALSE
684 * if the key exchange could not be started.
687 bool silc_client_start_key_exchange(SilcClient client,
688 SilcClientConnection conn,
691 /****f* silcclient/SilcClientAPI/silc_client_close_connection
695 * void silc_client_close_connection(SilcClient client,
696 * SilcSocketConnection sock,
697 * SilcClientConnection conn);
701 * Closes connection to remote end. Free's all allocated data except
702 * for some information such as nickname etc. that are valid at all time.
703 * If the `sock' is NULL then the conn->sock will be used. If `sock' is
704 * provided it will be checked whether the sock and `conn->sock' are the
705 * same (they can be different, ie. a socket can use `conn' as its
706 * connection but `conn->sock' might be actually a different connection
710 void silc_client_close_connection(SilcClient client,
711 SilcSocketConnection sock,
712 SilcClientConnection conn);
715 /* Message sending functions (client_channel.c and client_prvmsg.c) */
717 /****f* silcclient/SilcClientAPI/silc_client_send_channel_message
721 * void silc_client_send_channel_message(SilcClient client,
722 * SilcClientConnection conn,
723 * SilcChannelEntry channel,
724 * SilcChannelPrivateKey key,
725 * SilcMessageFlags flags,
726 * unsigned char *data,
732 * Sends packet to the `channel'. Packet to channel is always encrypted
733 * differently from "normal" packets. SILC header of the packet is
734 * encrypted with the next receiver's key and the rest of the packet is
735 * encrypted with the channel specific key. Padding and HMAC is computed
736 * with the next receiver's key. The `data' is the channel message. If
737 * the `force_send' is TRUE then the packet is sent immediately.
739 * If `key' is provided then that private key is used to encrypt the
740 * channel message. If it is not provided, private keys has not been
741 * set at all, the normal channel key is used automatically. If private
742 * keys are set then the first key (the key that was added first as
743 * private key) is used.
746 void silc_client_send_channel_message(SilcClient client,
747 SilcClientConnection conn,
748 SilcChannelEntry channel,
749 SilcChannelPrivateKey key,
750 SilcMessageFlags flags,
755 /****f* silcclient/SilcClientAPI/silc_client_send_private_message
759 * void silc_client_send_private_message(SilcClient client,
760 * SilcClientConnection conn,
761 * SilcClientEntry client_entry,
762 * SilcMessageFlags flags,
763 * unsigned char *data,
769 * Sends private message to remote client. If private message key has
770 * not been set with this client then the message will be encrypted using
771 * normal session keys. Private messages are special packets in SILC
772 * network hence we need this own function for them. This is similar
773 * to silc_client_packet_send_to_channel except that we send private
774 * message. The `data' is the private message. If the `force_send' is
775 * TRUE the packet is sent immediately.
778 void silc_client_send_private_message(SilcClient client,
779 SilcClientConnection conn,
780 SilcClientEntry client_entry,
781 SilcMessageFlags flags,
787 /* Client and Channel entry retrieval (idlist.c) */
789 /****f* silcclient/SilcClientAPI/SilcGetClientCallback
793 * typedef void (*SilcGetClientCallback)(SilcClient client,
794 * SilcClientConnection conn,
795 * SilcClientEntry *clients,
796 * uint32 clients_count,
801 * Callback function given to the silc_client_get_client function. The
802 * found entries are allocated into the `clients' array. The array must
803 * not be freed by the receiver, the library will free it later. If the
804 * `clients' is NULL, no such clients exist in the SILC Network.
807 typedef void (*SilcGetClientCallback)(SilcClient client,
808 SilcClientConnection conn,
809 SilcClientEntry *clients,
810 uint32 clients_count,
813 /****f* silcclient/SilcClientAPI/silc_client_get_clients
817 * void silc_client_get_clients(SilcClient client,
818 * SilcClientConnection conn,
819 * const char *nickname,
820 * const char *server,
821 * SilcGetClientCallback completion,
826 * Finds client entry or entries by the `nickname' and `server'. The
827 * completion callback will be called when the client entries has been
832 * NOTE: This function is always asynchronous and resolves the client
833 * information from the server. Thus, if you already know the client
834 * information then use the silc_client_get_client_by_id function to
835 * get the client entry since this function may be very slow and should
836 * be used only to initially get the client entries.
839 void silc_client_get_clients(SilcClient client,
840 SilcClientConnection conn,
841 const char *nickname,
843 SilcGetClientCallback completion,
846 /****f* silcclient/SilcClientAPI/silc_client_get_clients_local
850 * SilcClientEntry *silc_client_get_clients_local(SilcClient client,
851 * SilcClientConnection conn,
852 * const char *nickname,
853 * const char *format,
854 * uint32 *clients_count);
858 * Same as silc_client_get_clients function but does not resolve anything
859 * from the server. This checks local cache and returns all matching
860 * clients from the local cache. If none was found this returns NULL.
861 * The `nickname' is the real nickname of the client, and the `format'
862 * is the formatted nickname to find exact match from multiple found
863 * entries. The format must be same as given in the SilcClientParams
864 * structure to the client library. If the `format' is NULL all found
865 * clients by `nickname' are returned. The caller must return the
869 SilcClientEntry *silc_client_get_clients_local(SilcClient client,
870 SilcClientConnection conn,
871 const char *nickname,
873 uint32 *clients_count);
875 /****f* silcclient/SilcClientAPI/silc_client_get_clients_by_list
879 * void silc_client_get_clients_by_list(SilcClient client,
880 * SilcClientConnection conn,
882 * SilcBuffer client_id_list,
883 * SilcGetClientCallback completion,
888 * Gets client entries by the list of client ID's `client_id_list'. This
889 * always resolves those client ID's it does not know yet from the server
890 * so this function might take a while. The `client_id_list' is a list
891 * of ID Payloads added one after other. JOIN command reply and USERS
892 * command reply for example returns this sort of list. The `completion'
893 * will be called after the entries are available.
896 void silc_client_get_clients_by_list(SilcClient client,
897 SilcClientConnection conn,
899 SilcBuffer client_id_list,
900 SilcGetClientCallback completion,
903 /****f* silcclient/SilcClientAPI/silc_client_get_client_by_id
907 * SilcClientEntry silc_client_get_client_by_id(SilcClient client,
908 * SilcClientConnection conn,
909 * SilcClientID *client_id);
913 * Find entry for client by the client's ID. Returns the entry or NULL
914 * if the entry was not found.
917 SilcClientEntry silc_client_get_client_by_id(SilcClient client,
918 SilcClientConnection conn,
919 SilcClientID *client_id);
921 /****f* silcclient/SilcClientAPI/silc_client_get_client_by_id_resolve
926 * silc_client_get_client_by_id_resolve(SilcClient client,
927 * SilcClientConnection conn,
928 * SilcClientID *client_id,
929 * SilcGetClientCallback completion,
934 * Same as silc_client_get_client_by_id but will always resolve the
935 * information from the server. Use this only if you know that you
936 * do not have the entry and the only thing you know about the client
940 void silc_client_get_client_by_id_resolve(SilcClient client,
941 SilcClientConnection conn,
942 SilcClientID *client_id,
943 SilcGetClientCallback completion,
946 /****f* silcclient/SilcClientAPI/silc_client_del_client
950 * bool silc_client_del_client(SilcClient client, SilcClientConnection conn,
951 * SilcClientEntry client_entry)
955 * Removes client from local cache by the client entry indicated by
956 * the `client_entry'. Returns TRUE if the deletion were successful.
959 bool silc_client_del_client(SilcClient client, SilcClientConnection conn,
960 SilcClientEntry client_entry);
962 /****f* silcclient/SilcClientAPI/SilcGetChannelCallback
966 * typedef void (*SilcGetClientCallback)(SilcClient client,
967 * SilcClientConnection conn,
968 * SilcClientEntry *clients,
969 * uint32 clients_count,
974 * Callback function given to the silc_client_get_channel_* functions.
975 * The found entries are allocated into the `channels' array. The array
976 * must not be freed by the receiver, the library will free it later.
977 * If the `channel' is NULL, no such channel exist in the SILC Network.
980 typedef void (*SilcGetChannelCallback)(SilcClient client,
981 SilcClientConnection conn,
982 SilcChannelEntry *channels,
983 uint32 channels_count,
986 /****f* silcclient/SilcClientAPI/silc_client_get_channel
990 * SilcChannelEntry silc_client_get_channel(SilcClient client,
991 * SilcClientConnection conn,
996 * Finds entry for channel by the channel name. Returns the entry or NULL
997 * if the entry was not found. It is found only if the client is joined
1001 SilcChannelEntry silc_client_get_channel(SilcClient client,
1002 SilcClientConnection conn,
1005 /****f* silcclient/SilcClientAPI/silc_client_get_channel_id_resolve
1010 * silc_client_get_channel_by_id_resolve(SilcClient client,
1011 * SilcClientConnection conn,
1012 * SilcChannelID *channel_id,
1013 * SilcGetClientCallback completion,
1018 * Finds channel entry by the channel name. Returns the entry or NULL
1019 * if it was not found.
1022 SilcChannelEntry silc_client_get_channel_by_id(SilcClient client,
1023 SilcClientConnection conn,
1024 SilcChannelID *channel_id);
1026 /****f* silcclient/SilcClientAPI/silc_client_get_channel_by_id_resolve
1031 * silc_client_get_channel_by_id_resolve(SilcClient client,
1032 * SilcClientConnection conn,
1033 * SilcChannelID *channel_id,
1034 * SilcGetClientCallback completion,
1039 * Resolves the channel information (its name mainly) from the server
1040 * by the `channel_id'. Use this only if you know that you do not have
1041 * the entry cached locally.
1044 void silc_client_get_channel_by_id_resolve(SilcClient client,
1045 SilcClientConnection conn,
1046 SilcChannelID *channel_id,
1047 SilcGetChannelCallback completion,
1050 /****f* silcclient/SilcClientAPI/silc_client_del_channel
1054 * bool silc_client_del_channel(SilcClient client,
1055 * SilcClientConnection conn,
1056 * SilcChannelEntry channel)
1060 * Removes channel from local cache by the channel entry indicated by
1061 * the `channel'. Returns TRUE if the deletion were successful.
1064 bool silc_client_del_channel(SilcClient client, SilcClientConnection conn,
1065 SilcChannelEntry channel);
1067 /****f* silcclient/SilcClientAPI/silc_client_get_server
1071 * SilcServerEntry silc_client_get_server(SilcClient client,
1072 * SilcClientConnection conn,
1073 * char *server_name)
1077 * Finds entry for server by the server name. Returns the entry or NULL
1078 * if the entry was not found.
1081 SilcServerEntry silc_client_get_server(SilcClient client,
1082 SilcClientConnection conn,
1085 /****f* silcclient/SilcClientAPI/silc_client_get_server_by_id
1089 * SilcServerEntry silc_client_get_server_by_id(SilcClient client,
1090 * SilcClientConnection conn,
1091 * SilcServerID *server_id);
1095 * Finds entry for server by the server ID. Returns the entry or NULL
1096 * if the entry was not found.
1099 SilcServerEntry silc_client_get_server_by_id(SilcClient client,
1100 SilcClientConnection conn,
1101 SilcServerID *server_id);
1103 /****f* silcclient/SilcClientAPI/silc_client_del_server
1107 * bool silc_client_del_server(SilcClient client, SilcClientConnection conn,
1108 * SilcServerEntry server);
1112 * Removes server from local cache by the server entry indicated by
1113 * the `server'. Returns TRUE if the deletion were successful.
1116 bool silc_client_del_server(SilcClient client, SilcClientConnection conn,
1117 SilcServerEntry server);
1119 /* Command management (command.c) */
1121 /****f* silcclient/SilcClientAPI/silc_client_command_alloc
1125 * SilcClientCommandContext silc_client_command_alloc();
1129 * Allocate Command Context. The context is defined in `command.h' file.
1130 * The context is used by the library commands and applications should use
1131 * it as well. However, application may choose to use some own context
1132 * for its local commands. All library commands, however, must use this
1136 SilcClientCommandContext silc_client_command_alloc();
1138 /****f* silcclient/SilcClientAPI/silc_client_command_free
1142 * void silc_client_command_free(SilcClientCommandContext ctx);
1146 * Free command context and its internals. If the contex was duplicated
1147 * with silc_client_command_dup this may not actually free the data,
1148 * instead it will decrease the reference counter of the context. The
1149 * context will be freed when the reference counter hits zero.
1152 void silc_client_command_free(SilcClientCommandContext ctx);
1154 /****f* silcclient/SilcClientAPI/silc_client_command_dup
1158 * SilcClientCommandContext
1159 * silc_client_command_dup(SilcClientCommandContext ctx);
1163 * Duplicate Command Context by adding reference counter. The context won't
1164 * be free'd untill it hits zero.
1167 SilcClientCommandContext silc_client_command_dup(SilcClientCommandContext ctx);
1169 /****f* silcclient/SilcClientAPI/silc_client_command_find
1173 * SilcClientCommand *silc_client_command_find(const char *name);
1177 * Finds and returns a pointer to the command list. Return NULL if the
1178 * command is not found. See the `command.[ch]' for the command list.
1181 SilcClientCommand *silc_client_command_find(const char *name);
1183 /****f* silcclient/SilcClientAPI/silc_client_send_command
1187 * void silc_client_send_command(SilcClient client,
1188 * SilcClientConnection conn,
1189 * SilcCommand command, uint16 ident,
1190 * uint32 argc, ...);
1194 * Generic function to send any command. The arguments must be sent already
1195 * encoded into correct form and in correct order.
1198 void silc_client_send_command(SilcClient client, SilcClientConnection conn,
1199 SilcCommand command, uint16 ident,
1202 /****f* silcclient/SilcClientAPI/SilcClientPendingDestructor
1206 * typedef void (*SilcClientPendingDestructor)(void *context);
1210 * Pending Command callback destructor. This is called after calling the
1211 * pending callback or if error occurs while processing the pending command.
1212 * If error occurs then the callback won't be called at all, and only this
1213 * destructor is called. The `context' is the context given for the function
1214 * silc_client_command_pending.
1217 typedef void (*SilcClientPendingDestructor)(void *context);
1219 /****f* silcclient/SilcClientAPI/silc_client_command_pending
1223 * void silc_client_command_pending(SilcClientConnection conn,
1224 * SilcCommand reply_cmd,
1226 * SilcClientPendingDestructor destructor,
1227 * SilcCommandCb callback,
1232 * Add new pending command to be executed when reply to a command has been
1233 * received. The `reply_cmd' is the command that will call the `callback'
1234 * with `context' when reply has been received. If `ident is non-zero
1235 * the `callback' will be executed when received reply with command
1236 * identifier `ident'.
1239 void silc_client_command_pending(SilcClientConnection conn,
1240 SilcCommand reply_cmd,
1242 SilcClientPendingDestructor destructor,
1243 SilcCommandCb callback,
1247 /* Private Message key management (client_prvmsg.c) */
1249 /****f* silcclient/SilcClientAPI/silc_client_add_private_message_key
1253 * int silc_client_add_private_message_key(SilcClient client,
1254 * SilcClientConnection conn,
1255 * SilcClientEntry client_entry,
1257 * unsigned char *key,
1259 * bool generate_key,
1264 * Adds private message key to the client library. The key will be used to
1265 * encrypt all private message between the client and the remote client
1266 * indicated by the `client_entry'. If the `key' is NULL and the boolean
1267 * value `generate_key' is TRUE the library will generate random key.
1268 * The `key' maybe for example pre-shared-key, passphrase or similar.
1269 * The `cipher' MAY be provided but SHOULD be NULL to assure that the
1270 * requirements of the SILC protocol are met. The API, however, allows
1271 * to allocate any cipher.
1273 * If `responder' is TRUE then the sending and receiving keys will be
1274 * set according the client being the receiver of the private key. If
1275 * FALSE the client is being the sender (or negotiator) of the private
1278 * It is not necessary to set key for normal private message usage. If the
1279 * key is not set then the private messages are encrypted using normal
1280 * session keys. Setting the private key, however, increases the security.
1282 * Returns FALSE if the key is already set for the `client_entry', TRUE
1286 int silc_client_add_private_message_key(SilcClient client,
1287 SilcClientConnection conn,
1288 SilcClientEntry client_entry,
1295 /****f* silcclient/SilcClientAPI/silc_client_add_private_message_key_ske
1299 * int silc_client_add_private_message_key_ske(SilcClient client,
1300 * SilcClientConnection conn,
1301 * SilcClientEntry client_entry,
1303 * SilcSKEKeyMaterial *key);
1307 * Same as silc_client_add_private_message_key but takes the key material
1308 * from the SKE key material structure. This structure is received if
1309 * the application uses the silc_client_send_key_agreement to negotiate
1310 * the key material. The `cipher' SHOULD be provided as it is negotiated
1311 * also in the SKE protocol.
1314 int silc_client_add_private_message_key_ske(SilcClient client,
1315 SilcClientConnection conn,
1316 SilcClientEntry client_entry,
1318 SilcSKEKeyMaterial *key,
1321 /****f* silcclient/SilcClientAPI/silc_client_send_private_message_key
1325 * int silc_client_send_private_message_key(SilcClient client,
1326 * SilcClientConnection conn,
1327 * SilcClientEntry client_entry,
1332 * Sends private message key payload to the remote client indicated by
1333 * the `client_entry'. If the `force_send' is TRUE the packet is sent
1334 * immediately. Returns FALSE if error occurs, TRUE otherwise. The
1335 * application should call this function after setting the key to the
1338 * Note that the key sent using this function is sent to the remote client
1339 * through the SILC network. The packet is protected using normal session
1343 int silc_client_send_private_message_key(SilcClient client,
1344 SilcClientConnection conn,
1345 SilcClientEntry client_entry,
1348 /****f* silcclient/SilcClientAPI/silc_client_del_private_message_key
1352 * int silc_client_del_private_message_key(SilcClient client,
1353 * SilcClientConnection conn,
1354 * SilcClientEntry client_entry);
1358 * Removes the private message from the library. The key won't be used
1359 * after this to protect the private messages with the remote `client_entry'
1360 * client. Returns FALSE on error, TRUE otherwise.
1363 int silc_client_del_private_message_key(SilcClient client,
1364 SilcClientConnection conn,
1365 SilcClientEntry client_entry);
1367 /****f* silcclient/SilcClientAPI/silc_client_list_private_message_keys
1371 * SilcPrivateMessageKeys
1372 * silc_client_list_private_message_keys(SilcClient client,
1373 * SilcClientConnection conn,
1374 * uint32 *key_count);
1378 * Returns array of set private message keys associated to the connection
1379 * `conn'. Returns allocated SilcPrivateMessageKeys array and the array
1380 * count to the `key_count' argument. The array must be freed by the caller
1381 * by calling the silc_client_free_private_message_keys function. Note:
1382 * the keys returned in the array is in raw format. It might not be desired
1383 * to show the keys as is. The application might choose not to show the keys
1384 * at all or to show the fingerprints of the keys.
1387 SilcPrivateMessageKeys
1388 silc_client_list_private_message_keys(SilcClient client,
1389 SilcClientConnection conn,
1392 /****f* silcclient/SilcClientAPI/silc_client_free_private_message_keys
1396 * void silc_client_free_private_message_keys(SilcPrivateMessageKeys keys,
1397 * uint32 key_count);
1401 * Frees the SilcPrivateMessageKeys array returned by the function
1402 * silc_client_list_private_message_keys.
1405 void silc_client_free_private_message_keys(SilcPrivateMessageKeys keys,
1409 /* Channel private key management (client_channel.c,
1410 SilcChannelPrivateKey is defined in idlist.h) */
1412 /****f* silcclient/SilcClientAPI/silc_client_add_channel_private_key
1416 * int silc_client_add_channel_private_key(SilcClient client,
1417 * SilcClientConnection conn,
1418 * SilcChannelEntry channel,
1421 * unsigned char *key,
1426 * Adds private key for channel. This may be set only if the channel's mode
1427 * mask includes the SILC_CHANNEL_MODE_PRIVKEY. This returns FALSE if the
1428 * mode is not set. When channel has private key then the messages are
1429 * encrypted using that key. All clients on the channel must also know the
1430 * key in order to decrypt the messages. However, it is possible to have
1431 * several private keys per one channel. In this case only some of the
1432 * clients on the channel may know the one key and only some the other key.
1434 * The private key for channel is optional. If it is not set then the
1435 * channel messages are encrypted using the channel key generated by the
1436 * server. However, setting the private key (or keys) for the channel
1437 * significantly adds security. If more than one key is set the library
1438 * will automatically try all keys at the message decryption phase. Note:
1439 * setting many keys slows down the decryption phase as all keys has to
1440 * be tried in order to find the correct decryption key. However, setting
1441 * a few keys does not have big impact to the decryption performace.
1445 * NOTE: This is entirely local setting. The key set using this function
1446 * is not sent to the network at any phase.
1448 * NOTE: If the key material was originated by the SKE protocol (using
1449 * silc_client_send_key_agreement) then the `key' MUST be the
1450 * key->send_enc_key as this is dictated by the SILC protocol. However,
1451 * currently it is not expected that the SKE key material would be used
1452 * as channel private key. However, this API allows it.
1455 int silc_client_add_channel_private_key(SilcClient client,
1456 SilcClientConnection conn,
1457 SilcChannelEntry channel,
1463 /****f* silcclient/SilcClientAPI/silc_client_del_channel_private_keys
1467 * int silc_client_del_channel_private_keys(SilcClient client,
1468 * SilcClientConnection conn,
1469 * SilcChannelEntry channel);
1473 * Removes all private keys from the `channel'. The old channel key is used
1474 * after calling this to protect the channel messages. Returns FALSE on
1475 * on error, TRUE otherwise.
1478 int silc_client_del_channel_private_keys(SilcClient client,
1479 SilcClientConnection conn,
1480 SilcChannelEntry channel);
1482 /****f* silcclient/SilcClientAPI/silc_client_del_channel_private_key
1486 * int silc_client_del_channel_private_key(SilcClient client,
1487 * SilcClientConnection conn,
1488 * SilcChannelEntry channel,
1489 * SilcChannelPrivateKey key);
1493 * Removes and frees private key `key' from the channel `channel'.
1494 * The `key' is retrieved by calling the function
1495 * silc_client_list_channel_private_keys. The key is not used after
1496 * this. If the key was last private key then the old channel key is
1497 * used hereafter to protect the channel messages. This returns FALSE
1498 * on error, TRUE otherwise.
1501 int silc_client_del_channel_private_key(SilcClient client,
1502 SilcClientConnection conn,
1503 SilcChannelEntry channel,
1504 SilcChannelPrivateKey key);
1506 /****f* silcclient/SilcClientAPI/silc_client_list_channel_private_keys
1510 * SilcChannelPrivateKey *
1511 * silc_client_list_channel_private_keys(SilcClient client,
1512 * SilcClientConnection conn,
1513 * SilcChannelEntry channel,
1514 * uint32 *key_count);
1518 * Returns array (pointers) of private keys associated to the `channel'.
1519 * The caller must free the array by calling the function
1520 * silc_client_free_channel_private_keys. The pointers in the array may be
1521 * used to delete the specific key by giving the pointer as argument to the
1522 * function silc_client_del_channel_private_key.
1525 SilcChannelPrivateKey *
1526 silc_client_list_channel_private_keys(SilcClient client,
1527 SilcClientConnection conn,
1528 SilcChannelEntry channel,
1531 /****f* silcclient/SilcClientAPI/silc_client_free_channel_private_keys
1535 * void silc_client_free_channel_private_keys(SilcChannelPrivateKey *keys,
1536 * uint32 key_count);
1540 * Frees the SilcChannelPrivateKey array.
1543 void silc_client_free_channel_private_keys(SilcChannelPrivateKey *keys,
1547 /* Key Agreement routines (client_keyagr.c) */
1549 /****f* silcclient/SilcClientAPI/silc_client_send_key_agreement
1553 * void silc_client_send_key_agreement(SilcClient client,
1554 * SilcClientConnection conn,
1555 * SilcClientEntry client_entry,
1558 * uint32 timeout_secs,
1559 * SilcKeyAgreementCallback completion,
1564 * Sends key agreement request to the remote client indicated by the
1565 * `client_entry'. If the caller provides the `hostname' and the `port'
1566 * arguments then the library will bind the client to that hostname and
1567 * that port for the key agreement protocol. It also sends the `hostname'
1568 * and the `port' in the key agreement packet to the remote client. This
1569 * would indicate that the remote client may initiate the key agreement
1570 * protocol to the `hostname' on the `port'. If port is zero then the
1571 * bound port is undefined (the operating system defines it).
1573 * If the `hostname' and `port' is not provided then empty key agreement
1574 * packet is sent to the remote client. The remote client may reply with
1575 * the same packet including its hostname and port. If the library receives
1576 * the reply from the remote client the `key_agreement' client operation
1577 * callback will be called to verify whether the user wants to perform the
1578 * key agreement or not.
1582 * NOTE: If the application provided the `hostname' and the `port' and the
1583 * remote side initiates the key agreement protocol it is not verified
1584 * from the user anymore whether the protocol should be executed or not.
1585 * By setting the `hostname' and `port' the user gives permission to
1586 * perform the protocol (we are responder in this case).
1588 * NOTE: If the remote side decides not to initiate the key agreement
1589 * or decides not to reply with the key agreement packet then we cannot
1590 * perform the key agreement at all. If the key agreement protocol is
1591 * performed the `completion' callback with the `context' will be called.
1592 * If remote side decides to ignore the request the `completion' will be
1593 * called after the specified timeout, `timeout_secs'.
1595 * NOTE: If the `hostname' and the `port' was not provided the `completion'
1596 * will not be called at all since this does nothing more than sending
1597 * a packet to the remote host.
1599 * NOTE: There can be only one active key agreement for one client entry.
1600 * Before setting new one, the old one must be finished (it is finished
1601 * after calling the completion callback) or the function
1602 * silc_client_abort_key_agreement must be called.
1605 void silc_client_send_key_agreement(SilcClient client,
1606 SilcClientConnection conn,
1607 SilcClientEntry client_entry,
1608 const char *hostname,
1609 const char *bindhost,
1611 uint32 timeout_secs,
1612 SilcKeyAgreementCallback completion,
1615 /****f* silcclient/SilcClientAPI/silc_client_perform_key_agreement
1620 * silc_client_perform_key_agreement(SilcClient client,
1621 * SilcClientConnection conn,
1622 * SilcClientEntry client_entry,
1625 * SilcKeyAgreementCallback completion,
1630 * Performs the actual key agreement protocol. Application may use this
1631 * to initiate the key agreement protocol. This can be called for example
1632 * after the application has received the `key_agreement' client operation,
1633 * and did not return TRUE from it.
1635 * The `hostname' is the remote hostname (or IP address) and the `port'
1636 * is the remote port. The `completion' callback with the `context' will
1637 * be called after the key agreement protocol.
1641 * NOTE: If the application returns TRUE in the `key_agreement' client
1642 * operation the library will automatically start the key agreement. In this
1643 * case the application must not call this function. However, application
1644 * may choose to just ignore the `key_agreement' client operation (and
1645 * merely just print information about it on the screen) and call this
1646 * function when the user whishes to do so (by, for example, giving some
1647 * specific command). Thus, the API provides both, automatic and manual
1648 * initiation of the key agreement. Calling this function is the manual
1649 * initiation and returning TRUE in the `key_agreement' client operation
1650 * is the automatic initiation.
1653 void silc_client_perform_key_agreement(SilcClient client,
1654 SilcClientConnection conn,
1655 SilcClientEntry client_entry,
1658 SilcKeyAgreementCallback completion,
1661 /****f* silcclient/SilcClientAPI/silc_client_perform_key_agreement_fd
1666 * silc_client_perform_key_agreement_fd(SilcClient client,
1667 * SilcClientConnection conn,
1668 * SilcClientEntry client_entry,
1671 * SilcKeyAgreementCallback completion,
1676 * Same as above but application has created already the connection to
1677 * the remote host. The `sock' is the socket to the remote connection.
1678 * Application can use this function if it does not want the client library
1679 * to create the connection.
1682 void silc_client_perform_key_agreement_fd(SilcClient client,
1683 SilcClientConnection conn,
1684 SilcClientEntry client_entry,
1687 SilcKeyAgreementCallback completion,
1690 /****f* silcclient/SilcClientAPI/silc_client_abort_key_agreement
1694 * void silc_client_abort_key_agreement(SilcClient client,
1695 * SilcClientConnection conn,
1696 * SilcClientEntry client_entry);
1700 * This function can be called to unbind the hostname and the port for
1701 * the key agreement protocol. However, this function has effect only
1702 * before the key agreement protocol has been performed. After it has
1703 * been performed the library will automatically unbind the port. The
1704 * `client_entry' is the client to which we sent the key agreement
1708 void silc_client_abort_key_agreement(SilcClient client,
1709 SilcClientConnection conn,
1710 SilcClientEntry client_entry);
1713 /* Misc functions */
1715 /****f* silcclient/SilcClientAPI/silc_client_set_away_message
1719 * void silc_client_set_away_message(SilcClient client,
1720 * SilcClientConnection conn,
1725 * Sets away `message'. The away message may be set when the client's
1726 * mode is changed to SILC_UMODE_GONE and the client whishes to reply
1727 * to anyone who sends private message. The `message' will be sent
1728 * automatically back to the the client who send private message. If
1729 * away message is already set this replaces the old message with the
1730 * new one. If `message' is NULL the old away message is removed.
1731 * The sender may freely free the memory of the `message'.
1734 void silc_client_set_away_message(SilcClient client,
1735 SilcClientConnection conn,
1739 /****f* silcclient/SilcClientAPI/SilcConnectionAuthRequest
1743 * typedef void (*SilcConnectionAuthRequest)(SilcClient client,
1744 * SilcClientConnection conn,
1745 * SilcAuthMethod auth_meth,
1750 * Connection authentication method request callback. This is called
1751 * by the client library after it has received the authentication method
1752 * that the application requested by calling the function
1753 * silc_client_request_authentication_method.
1756 typedef void (*SilcConnectionAuthRequest)(SilcClient client,
1757 SilcClientConnection conn,
1758 SilcAuthMethod auth_meth,
1761 /****f* silcclient/SilcClientAPI/silc_client_request_authentication_method
1766 * silc_client_request_authentication_method(SilcClient client,
1767 * SilcClientConnection conn,
1768 * SilcConnectionAuthRequest
1774 * This function can be used to request the current authentication method
1775 * from the server. This may be called when connecting to the server
1776 * and the client library requests the authentication data from the
1777 * application. If the application does not know the current authentication
1778 * method it can request it from the server using this function.
1779 * The `callback' with `context' will be called after the server has
1780 * replied back with the current authentication method.
1784 silc_client_request_authentication_method(SilcClient client,
1785 SilcClientConnection conn,
1786 SilcConnectionAuthRequest callback,
1790 SILC_CLIENT_FILE_MONITOR_KEY_AGREEMENT,
1791 SILC_CLIENT_FILE_MONITOR_SEND,
1792 SILC_CLIENT_FILE_MONITOR_RECEIVE,
1793 SILC_CLIENT_FILE_MONITOR_GET,
1794 SILC_CLIENT_FILE_MONITOR_PUT,
1795 SILC_CLIENT_FILE_MONITOR_CLOSED,
1796 SILC_CLIENT_FILE_MONITOR_ERROR,
1797 } SilcClientMonitorStatus;
1800 SILC_CLIENT_FILE_OK,
1801 SILC_CLIENT_FILE_ERROR,
1802 SILC_CLIENT_FILE_UNKNOWN_SESSION,
1803 SILC_CLIENT_FILE_ALREADY_STARTED,
1804 SILC_CLIENT_FILE_NO_SUCH_FILE,
1805 SILC_CLIENT_FILE_PERMISSION_DENIED,
1806 } SilcClientFileError;
1808 /****f* silcclient/SilcClientAPI/silc_client_file_receive
1812 * typedef void (*SilcClientFileMonitor)(SilcClient client,
1813 * SilcClientConnection conn,
1814 * SilcClientMonitorStatus status,
1815 * SilcClientFileError error,
1818 * SilcClientEntry client_entry,
1819 * uint32 session_id,
1820 * const char *filepath,
1825 * Monitor callback that is called during the file transmission to
1826 * monitor the transmission process. The `status' indicates the current
1827 * monitoring process. The `offset' is the currently transmitted amount
1828 * of total `filesize'. The `client_entry' indicates the remote client,
1829 * and the transmission session ID is the `session_id'. The filename
1830 * being transmitted is indicated by the `filepath'.
1833 typedef void (*SilcClientFileMonitor)(SilcClient client,
1834 SilcClientConnection conn,
1835 SilcClientMonitorStatus status,
1836 SilcClientFileError error,
1839 SilcClientEntry client_entry,
1841 const char *filepath,
1844 /****f* silcclient/SilcClientAPI/silc_client_file_send
1848 * uint32 silc_client_file_send(SilcClient client,
1849 * SilcClientConnection conn,
1850 * SilcClientFileMonitor monitor,
1851 * void *monitor_context,
1852 * const char *local_ip,
1853 * uint32 local_port,
1854 * SilcClientEntry client_entry,
1855 * const char *filepath);
1859 * Sends a file indicated by the `filepath' to the remote client
1860 * indicated by the `client_entry'. This will negotiate a secret key
1861 * with the remote client before actually starting the transmission of
1862 * the file. The `monitor' callback will be called to monitor the
1863 * transmission of the file.
1865 * This returns a file session ID for the file transmission. It can
1866 * be used to close the session (and abort the file transmission) by
1867 * calling the silc_client_file_close function. The session ID is
1868 * also returned in the `monitor' callback. This returns 0 if the
1869 * file indicated by the `filepath' is being transmitted to the remote
1870 * client indicated by the `client_entry', already.
1872 * If the `local_ip' is provided then this will try to bind the
1873 * listener for key exchange protocol to that IP. If `local_port' is
1874 * non-zero that port is used. If `local_ip' is NULL then this will
1875 * automatically attempt to bind it to local IP address of the machine.
1876 * If that fails then this does not bind to any address and port, and
1877 * assume that the remote client will provide the listener for the
1878 * key exchange protocol.
1880 * If error will occur during the file transfer process the error
1881 * status will be returned in the monitor callback. In this case
1882 * the application must call silc_client_file_close to close the
1886 uint32 silc_client_file_send(SilcClient client,
1887 SilcClientConnection conn,
1888 SilcClientFileMonitor monitor,
1889 void *monitor_context,
1890 const char *local_ip,
1892 SilcClientEntry client_entry,
1893 const char *filepath);
1895 /****f* silcclient/SilcClientAPI/silc_client_file_receive
1899 * SilcClientFileError
1900 * silc_client_file_receive(SilcClient client,
1901 * SilcClientConnection conn,
1902 * SilcClientFileMonitor monitor,
1903 * void *monitor_context,
1904 * uint32 session_id);
1908 * Receives a file from a client indicated by the `client_entry'. The
1909 * `session_id' indicates the file transmission session and it has been
1910 * received in the `ftp' client operation function. This will actually
1911 * perform the key agreement protocol with the remote client before
1912 * actually starting the file transmission. The `monitor' callback
1913 * will be called to monitor the transmission.
1915 * If error will occur during the file transfer process the error
1916 * status will be returned in the monitor callback. In this case
1917 * the application must call silc_client_file_close to close the
1922 silc_client_file_receive(SilcClient client,
1923 SilcClientConnection conn,
1924 SilcClientFileMonitor monitor,
1925 void *monitor_context,
1928 /****f* silcclient/SilcClientAPI/silc_client_file_close
1932 * SilcClientFileError silc_client_file_close(SilcClient client,
1933 * SilcClientConnection conn,
1934 * uint32 session_id);
1938 * Closes file transmission session indicated by the `session_id'.
1939 * If file transmission is being conducted it will be aborted
1940 * automatically. This function is also used to close the session
1941 * after successful file transmission. This function can be used
1942 * also to reject incoming file transmission request.
1945 SilcClientFileError silc_client_file_close(SilcClient client,
1946 SilcClientConnection conn,