5 Author: Pekka Riikonen <priikone@silcnet.org>
7 Copyright (C) 2000 - 2003 Pekka Riikonen
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; version 2 of the License.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
20 /****h* silcclient/Client Library Interface
24 * This interface defines the SILC Client Library API for the application.
25 * The client operations are defined first. These are callback functions that
26 * the application MUST implement since the library may call the functions
27 * at any time. At the end of file is the API for the application that
28 * it can use from the library. This is the only file that the application
29 * may include from the SIlC Client Library.
31 * o SILC Client Operations
33 * These functions must be implemented by the application calling the SILC
34 * client library. The client library can call these functions at any time.
36 * To use this structure: define a static SilcClientOperations variable,
37 * fill it and pass its pointer to silc_client_alloc function.
39 * o SILC Client Library API
41 * This is the API that is published by the SILC Client Library for the
42 * applications. These functions are implemented in the SILC Client Library.
43 * Application may freely call these functions from the library.
45 * Please, refer to the README file in this directory for the directions
46 * of how to use the SILC Client Library.
59 /* General definitions */
61 /****s* silcclient/SilcClientAPI/SilcClient
65 * typedef struct SilcClientStruct { ... } *SilcClient
69 * This is the actual SILC Client structure which represents one
70 * SILC Client. It is allocated with the silc_client_alloc function
71 * and given as argument to all SILC Client Library functions. It
72 * is initialized with silc_client_init function, and freed with
73 * silc_client_free function.
77 struct SilcClientStruct {
79 * The following fields are set by application
81 char *nickname; /* Nickname, MAY be set by application */
82 char *username; /* Username, MUST be set by application */
83 char *hostname; /* hostname, MUST be set by application */
84 char *realname; /* Real name, MUST be set be application */
86 SilcPublicKey public_key; /* Public key of user, set by application */
87 SilcPrivateKey private_key; /* Private key of user, set by application */
88 SilcPKCS pkcs; /* PKCS allocated by application */
91 * The following fields are set by the library
94 /* Scheduler, set by library. Application may use this pointer. */
95 SilcSchedule schedule;
97 /* Random Number Generator. Application should use this as its primary
98 random number generator. */
101 /* Application specific user data pointer. Client library does not
102 touch this. This the context sent as argument to silc_client_alloc.
103 Application can use it freely. */
106 /* Generic hash context for application usage */
110 /* Internal data for client library. Application cannot access this
112 SilcClientInternal internal;
116 /****s* silcclient/SilcClientAPI/SilcClientConnection
120 * typedef struct SilcClientConnectionStruct { ... }
121 * *SilcClientConnection
125 * This structure represents a connection. When connection is created
126 * to server this is context is returned to the application in the
127 * "connected" client operation. It includes all the important
128 * data for the session, such as nickname, local and remote IDs, and
133 struct SilcClientConnectionStruct {
137 char *nickname; /* Current nickname */
138 SilcClientEntry local_entry; /* Own Client Entry */
139 SilcClientID *local_id; /* Current Client ID */
140 unsigned char *local_id_data; /* Current Client ID decoded */
141 SilcUInt32 local_id_data_len;
146 char *remote_host; /* Remote host name */
147 int remote_port; /* Remote port */
148 SilcServerID *remote_id; /* Remote Server ID */
149 unsigned char *remote_id_data; /* Remote Server ID decoded */
150 SilcUInt32 remote_id_data_len;
156 /* Current command identifier for a command that was sent last.
157 Application may get the value from this variable to find out the
158 command identifier for last command. */
159 SilcUInt16 cmd_ident;
161 /* User data context. Library does not touch this. Application may
162 freely set and use this pointer for its needs. */
165 /* Pointer back to the SilcClient. Application may use this. */
168 /* Current channel. Application may use and set this pointer if needed. */
169 SilcChannelEntry current_channel;
171 /* Socket connection object for this connection. Application may
172 use this if needed. The sock->user_data is back pointer to this
174 SilcSocketConnection sock;
176 /* Internal data for client library. Application cannot access this
178 SilcClientConnectionInternal internal;
182 /****s* silcclient/SilcClientAPI/SilcClientEntry
186 * typedef struct SilcClientEntryStruct { ... } *SilcClientEntry
190 * This structure represents a client or a user in the SILC network.
191 * The local user has this structure also and it can be accessed from
192 * SilcClientConnection structure. All other users in the SILC network
193 * that are accessed using the Client Library routines will have their
194 * own SilcClientEntry structure. For example, when finding users by
195 * their nickname the Client Library returns this structure back to
200 struct SilcClientEntryStruct {
201 /* General information */
202 char *nickname; /* nickname */
203 char *username; /* username */
204 char *hostname; /* hostname */
205 char *server; /* SILC server name */
206 char *realname; /* Realname (userinfo) */
208 /* Mode, ID and other information */
209 SilcUInt32 mode; /* User mode in SILC */
210 SilcClientID *id; /* The Client ID */
211 SilcDList attrs; /* Requested Attributes (maybe NULL) */
212 unsigned char *fingerprint; /* Fingerprint of client's public key */
213 SilcUInt32 fingerprint_len; /* Length of the fingerprint */
215 /* Private message keys */
216 SilcCipher send_key; /* Private message key for sending */
217 SilcCipher receive_key; /* Private message key for receiving */
218 SilcHmac hmac_send; /* Private mesage key HMAC for sending */
219 SilcHmac hmac_receive; /* Private mesage key HMAC for receiving */
220 unsigned char *key; /* Set only if application provided the
221 key material. NULL if the library
222 generated the key. */
223 SilcUInt32 key_len; /* Key length */
224 SilcClientKeyAgreement ke; /* Current key agreement context or NULL */
226 /* SilcClientEntry status information */
227 SilcEntryStatus status; /* Status mask */
228 SilcHashTable channels; /* All channels client has joined */
229 SilcUInt16 resolve_cmd_ident; /* Command identifier when resolving */
230 bool generated; /* TRUE if library generated `key' */
231 bool valid; /* FALSE if this entry is not valid */
235 /****s* silcclient/SilcClientAPI/SilcChannelEntry
239 * typedef struct SilcChannelEntryStruct { ... } *SilcChannelEntry
243 * This structure represents a channel in the SILC network. All
244 * channels that the client are aware of or have joined in will be
245 * represented as SilcChannelEntry. The structure includes information
250 struct SilcChannelEntryStruct {
251 /* General information */
252 char *channel_name; /* Channel name */
253 SilcChannelID *id; /* Channel ID */
254 SilcUInt32 mode; /* Channel mode */
256 /* All clients that has joined this channel. The key to the table is the
257 SilcClientEntry and the context is SilcChannelUser context. */
258 SilcHashTable user_list;
261 SilcCipher channel_key; /* The channel key */
262 unsigned char *key; /* Raw key data */
263 SilcUInt32 key_len; /* Raw key data length */
264 unsigned char iv[SILC_CIPHER_MAX_IV_SIZE]; /* Current IV */
265 SilcHmac hmac; /* Current HMAC */
267 /* Channel private keys */
268 SilcDList private_keys; /* List of private keys or NULL */
269 SilcChannelPrivateKey curr_key; /* Current private key */
271 /* SilcChannelEntry status information */
272 SilcCipher old_channel_key;
275 SilcUInt16 resolve_cmd_ident; /* Command identifier when
276 resolving this entry */
280 /****s* silcclient/SilcClientAPI/SilcServerEntry
284 * typedef struct SilcServerEntryStruct { ... } *SilcServerEntry
288 * This structure represents a server in the SILC network. All servers
289 * that the client is aware of and have for example resolved with
290 * SILC_COMMAND_INFO command have their on SilcServerEntry structure.
294 struct SilcServerEntryStruct {
295 /* General information */
296 char *server_name; /* Server name */
297 char *server_info; /* Server info */
298 SilcServerID *server_id; /* Server ID */
299 SilcUInt16 resolve_cmd_ident; /* Command identifier when
300 resolving this entry */
304 /****d* silcclient/SilcClientAPI/SilcKeyAgreementStatus
308 * typedef enum { ... } SilcKeyAgreementStatus;
312 * Key agreement status types indicating the status of the key
313 * agreement protocol. These types are returned to the application
314 * in the SilcKeyAgreementCallback callback function.
319 SILC_KEY_AGREEMENT_OK, /* Everything is Ok */
320 SILC_KEY_AGREEMENT_ERROR, /* Unknown error occurred */
321 SILC_KEY_AGREEMENT_FAILURE, /* The protocol failed */
322 SILC_KEY_AGREEMENT_TIMEOUT, /* The protocol timeout */
323 SILC_KEY_AGREEMENT_ABORTED, /* The protocol aborted */
324 SILC_KEY_AGREEMENT_ALREADY_STARTED, /* Already started */
325 SILC_KEY_AGREEMENT_SELF_DENIED, /* Negotiationg with itself denied */
326 } SilcKeyAgreementStatus;
329 /****f* silcclient/SilcClientAPI/SilcKeyAgreementCallback
333 * typedef void (*SilcKeyAgreementCallback)(SilcClient client,
334 * SilcClientConnection conn,
335 * SilcClientEntry client_entry,
336 * SilcKeyAgreementStatus status,
337 * SilcSKEKeyMaterial *key,
342 * Key agreement callback that is called after the key agreement protocol
343 * has been performed. This is called also if error occurred during the
344 * key agreement protocol. The `key' is the allocated key material and
345 * the caller is responsible of freeing it. The `key' is NULL if error
346 * has occurred. The application can freely use the `key' to whatever
347 * purpose it needs. See lib/silcske/silcske.h for the definition of
348 * the SilcSKEKeyMaterial structure.
351 typedef void (*SilcKeyAgreementCallback)(SilcClient client,
352 SilcClientConnection conn,
353 SilcClientEntry client_entry,
354 SilcKeyAgreementStatus status,
355 SilcSKEKeyMaterial *key,
358 /****s* silcclient/SilcClientAPI/SilcPrivateMessageKeys
362 * typedef struct { ... } SilcPrivateMessageKeys;
366 * Structure to hold the list of private message keys. The array of this
367 * structure is returned by the silc_client_list_private_message_keys
373 SilcClientEntry client_entry; /* The remote client entry */
374 char *cipher; /* The cipher name */
375 unsigned char *key; /* The original key, If the appliation
376 provided it. This is NULL if the
377 library generated the key or if
378 the SKE key material was used. */
379 SilcUInt32 key_len; /* The key length */
380 } *SilcPrivateMessageKeys;
383 /****s* silcclient/SilcClientAPI/SilcChannelPrivateKey
387 * typedef struct SilcChannelPrivateKeyStruct { ... }
388 * *SilcChannelPrivateKey;
392 * Structure to hold one channel private key. The array of this structure
393 * is returned by silc_client_list_channel_private_keys function.
397 struct SilcChannelPrivateKeyStruct {
398 char *name; /* Application given name */
399 SilcCipher cipher; /* The cipher and key */
400 SilcHmac hmac; /* The HMAC and hmac key */
401 unsigned char *key; /* The key data */
402 SilcUInt32 key_len; /* The key length */
406 /****f* silcclient/SilcClientAPI/SilcAskPassphrase
410 * typedef void (*SilcAskPassphrase)(unsigned char *passphrase,
411 * SilcUInt32 passphrase_len,
416 * Ask passphrase callback. This is called by the application when the
417 * library calls `ask_passphrase' client operation. The callback delivers
418 * the passphrase to the library. The passphrases in SILC protocol
419 * MUST be in UTF-8 encoding, therefore the `passphrase' SHOULD be UTF-8
420 * encoded, and if it is not then library will attempt to encode it.
423 typedef void (*SilcAskPassphrase)(unsigned char *passphrase,
424 SilcUInt32 passphrase_len,
427 /****f* silcclient/SilcClientAPI/SilcVerifyPublicKey
431 * typedef void (*SilcVerifyPublicKey)(bool success, void *context);
435 * Public key (or certificate) verification callback. This is called
436 * by the application to indicate that the public key verification was
437 * either success or failure.
440 typedef void (*SilcVerifyPublicKey)(bool success, void *context);
442 /****f* silcclient/SilcClientAPI/SilcGetAuthMeth
446 * typedef void (*SilcGetAuthMeth)(bool success,
447 * SilcProtocolAuthMeth auth_meth,
448 * const unsigned char *auth_data,
449 * SilcUInt32 auth_data_len, void *context);
453 * Authentication method resolving callback. This is called by the
454 * application to return the resolved authentication method. The client
455 * library has called the get_auth_method client operation and given
456 * this function pointer as argument. The `success' will indicate whether
457 * the authentication method could be resolved. The `auth_meth' is the
458 * resolved authentication method. The `auth_data' and the `auth_data_len'
459 * are the resolved authentication data. The `context' is the libary's
460 * context sent to the get_auth_method client operation.
463 typedef void (*SilcGetAuthMeth)(bool success,
464 SilcProtocolAuthMeth auth_meth,
465 const unsigned char *auth_data,
466 SilcUInt32 auth_data_len, void *context);
468 /****d* silcclient/SilcClientAPI/SilcClientMessageType
472 * typedef enum { ... } SilcClientMessageType;
476 * Different message types for `say' client operation. The application
477 * may filter the message sent by the library according this type.
482 SILC_CLIENT_MESSAGE_INFO, /* Informational */
483 SILC_CLIENT_MESSAGE_WARNING, /* Warning */
484 SILC_CLIENT_MESSAGE_ERROR, /* Error */
485 SILC_CLIENT_MESSAGE_AUDIT, /* Auditable */
486 } SilcClientMessageType;
489 /****d* silcclient/SilcClientAPI/SilcClientConnectionStatus
493 * typedef enum { ... } SilcClientConnectionStatus
497 * This type is returned to the `connect' client operation to indicate
498 * the status of the created connection. It can indicated if it was
499 * successful or whether an error occurred.
504 SILC_CLIENT_CONN_SUCCESS, /* Successfully connected */
505 SILC_CLIENT_CONN_SUCCESS_RESUME, /* Successfully connected and
506 resumed old detached session */
507 SILC_CLIENT_CONN_ERROR, /* Error occurred during connecting */
508 } SilcClientConnectionStatus;
511 /****s* silcclient/SilcClientAPI/SilcClientOperations
515 * typedef struct { ... } SilcClientOperations;
519 * SILC Client Operations. These must be implemented by the application.
520 * The Client library may call any of these routines at any time. The
521 * routines are used to deliver certain information to the application
522 * or from the application to the client library.
527 /* Message sent to the application by library. `conn' associates the
528 message to a specific connection. `conn', however, may be NULL.
529 The `type' indicates the type of the message sent by the library.
530 The application can for example filter the message according the
531 type. The variable argument list is arguments to the formatted
532 message that `msg' may be. */
533 void (*say)(SilcClient client, SilcClientConnection conn,
534 SilcClientMessageType type, char *msg, ...);
536 /* Message for a channel. The `sender' is the sender of the message
537 The `channel' is the channel. The `message' is the message. Note
538 that `message' maybe NULL. The `flags' indicates message flags
539 and it is used to determine how the message can be interpreted
540 (like it may tell the message is multimedia message). */
541 void (*channel_message)(SilcClient client, SilcClientConnection conn,
542 SilcClientEntry sender, SilcChannelEntry channel,
543 SilcMessagePayload payload, SilcMessageFlags flags,
544 const unsigned char *message,
545 SilcUInt32 message_len);
547 /* Private message to the client. The `sender' is the sender of the
548 message. The message is `message'and maybe NULL. The `flags'
549 indicates message flags and it is used to determine how the message
550 can be interpreted (like it may tell the message is multimedia
552 void (*private_message)(SilcClient client, SilcClientConnection conn,
553 SilcClientEntry sender, SilcMessagePayload payload,
554 SilcMessageFlags flags,
555 const unsigned char *message,
556 SilcUInt32 message_len);
558 /* Notify message to the client. The notify arguments are sent in the
559 same order as servers sends them. The arguments are same as received
560 from the server except for ID's. If ID is received application receives
561 the corresponding entry to the ID. For example, if Client ID is received
562 application receives SilcClientEntry. Also, if the notify type is
563 for channel the channel entry is sent to application (even if server
564 does not send it because client library gets the channel entry from
565 the Channel ID in the packet's header). */
566 void (*notify)(SilcClient client, SilcClientConnection conn,
567 SilcNotifyType type, ...);
569 /* Command handler. This function is called always in the command function.
570 If error occurs it will be called as well. `conn' is the associated
571 client connection. `cmd_context' is the command context that was
572 originally sent to the command. `success' is FALSE if error occurred
573 during command. `command' is the command being processed. It must be
574 noted that this is not reply from server. This is merely called just
575 after application has called the command. Just to tell application
576 that the command really was processed. */
577 void (*command)(SilcClient client, SilcClientConnection conn,
578 SilcClientCommandContext cmd_context, bool success,
579 SilcCommand command, SilcStatus status);
581 /* Command reply handler. This function is called always in the command reply
582 function. If error occurs it will be called as well. Normal scenario
583 is that it will be called after the received command data has been parsed
584 and processed. The function is used to pass the received command data to
587 `conn' is the associated client connection. `cmd_payload' is the command
588 payload data received from server and it can be ignored. It is provided
589 if the application would like to re-parse the received command data,
590 however, it must be noted that the data is parsed already by the library
591 thus the payload can be ignored. `success' is FALSE if error occurred.
592 In this case arguments are not sent to the application. The `status' is
593 the command reply status server returned. The `command' is the command
594 reply being processed. The function has variable argument list and each
595 command defines the number and type of arguments it passes to the
596 application (on error they are not sent).
598 The arguments are sent in the same order as servers sends them. The
599 arguments are same as received from the server except for ID's. If
600 ID is received application receives the corresponding entry to the
601 ID. For example, if Client ID is receives application receives
603 void (*command_reply)(SilcClient client, SilcClientConnection conn,
604 SilcCommandPayload cmd_payload, bool success,
605 SilcCommand command, SilcStatus status, ...);
607 /* Called to indicate that connection was either successfully established
608 or connecting failed. This is also the first time application receives
609 the SilcClientConnection object which it should save somewhere.
610 The `status' indicated whether the connection were successful. If it
611 is error value the application must always call the function
612 silc_client_close_connection. */
613 void (*connected)(SilcClient client, SilcClientConnection conn,
614 SilcClientConnectionStatus status);
616 /* Called to indicate that connection was disconnected to the server.
617 The `status' may tell the reason of the disconnection, and if the
618 `message' is non-NULL it may include the disconnection message
619 received from server. */
620 void (*disconnected)(SilcClient client, SilcClientConnection conn,
621 SilcStatus status, const char *message);
623 /* Find authentication method and authentication data by hostname and
624 port. The hostname may be IP address as well. When the authentication
625 method has been resolved the `completion' callback with the found
626 authentication method and authentication data is called. The `conn'
628 void (*get_auth_method)(SilcClient client, SilcClientConnection conn,
629 char *hostname, SilcUInt16 port,
630 SilcGetAuthMeth completion, void *context);
632 /* Verifies received public key. The `conn_type' indicates which entity
633 (server, client etc.) has sent the public key. If user decides to trust
634 the application may save the key as trusted public key for later
635 use. The `completion' must be called after the public key has been
637 void (*verify_public_key)(SilcClient client, SilcClientConnection conn,
638 SilcSocketType conn_type, unsigned char *pk,
639 SilcUInt32 pk_len, SilcSKEPKType pk_type,
640 SilcVerifyPublicKey completion, void *context);
642 /* Ask (interact, that is) a passphrase from user. The passphrase is
643 returned to the library by calling the `completion' callback with
644 the `context'. The returned passphrase SHOULD be in UTF-8 encoded,
645 if not then the library will attempt to encode. */
646 void (*ask_passphrase)(SilcClient client, SilcClientConnection conn,
647 SilcAskPassphrase completion, void *context);
649 /* Notifies application that failure packet was received. This is called
650 if there is some protocol active in the client. The `protocol' is the
651 protocol context. The `failure' is opaque pointer to the failure
652 indication. Note, that the `failure' is protocol dependant and
653 application must explicitly cast it to correct type. Usually `failure'
654 is 32 bit failure type (see protocol specs for all protocol failure
656 void (*failure)(SilcClient client, SilcClientConnection conn,
657 SilcProtocol protocol, void *failure);
659 /* Asks whether the user would like to perform the key agreement protocol.
660 This is called after we have received an key agreement packet or an
661 reply to our key agreement packet. This returns TRUE if the user wants
662 the library to perform the key agreement protocol and FALSE if it is not
663 desired (application may start it later by calling the function
664 silc_client_perform_key_agreement). If TRUE is returned also the
665 `completion' and `context' arguments must be set by the application. */
666 bool (*key_agreement)(SilcClient client, SilcClientConnection conn,
667 SilcClientEntry client_entry, const char *hostname,
668 SilcUInt16 port, SilcKeyAgreementCallback *completion,
671 /* Notifies application that file transfer protocol session is being
672 requested by the remote client indicated by the `client_entry' from
673 the `hostname' and `port'. The `session_id' is the file transfer
674 session and it can be used to either accept or reject the file
675 transfer request, by calling the silc_client_file_receive or
676 silc_client_file_close, respectively. */
677 void (*ftp)(SilcClient client, SilcClientConnection conn,
678 SilcClientEntry client_entry, SilcUInt32 session_id,
679 const char *hostname, SilcUInt16 port);
681 /* Delivers SILC session detachment data indicated by `detach_data' to the
682 application. If application has issued SILC_COMMAND_DETACH command
683 the client session in the SILC network is not quit. The client remains
684 in the network but is detached. The detachment data may be used later
685 to resume the session in the SILC Network. The appliation is
686 responsible of saving the `detach_data', to for example in a file.
688 The detachment data can be given as argument to the functions
689 silc_client_connect_to_server, or silc_client_add_connection when
690 creating connection to remote server, inside SilcClientConnectionParams
691 structure. If it is provided the client library will attempt to resume
692 the session in the network. After the connection is created
693 successfully, the application is responsible of setting the user
694 interface for user into the same state it was before detaching (showing
695 same channels, channel modes, etc). It can do this by fetching the
696 information (like joined channels) from the client library. */
697 void (*detach)(SilcClient client, SilcClientConnection conn,
698 const unsigned char *detach_data,
699 SilcUInt32 detach_data_len);
700 } SilcClientOperations;
703 /****f* silcclient/SilcClientAPI/SilcNicknameFormatParse
707 * typedef void (*SilcNicknameFormatParse)(const char *nickname,
708 * char **ret_nickname);
712 * A callback function provided by the application for the library in
713 * SilcClientParams structure. This function parses the formatted
714 * nickname string `nickname' and returns the true nickname to the
715 * `ret_nickname' pointer. The library can call this function at
719 typedef void (*SilcNicknameFormatParse)(const char *nickname,
720 char **ret_nickname);
722 /****s* silcclient/SilcClientAPI/SilcClientParams
726 * typedef struct { ... } SilcClientParams;
730 * Client parameters. This can be filled with proper values and
731 * given as argument to the silc_client_alloc function. The structure
732 * hold various parameters which affects the function of the client.
737 /* Number of maximum tasks the client library's scheduler can handle.
738 If set to zero, the default value will be used (200). For WIN32
739 systems this should be set to 64 as it is the hard limit dictated
743 /* Rekey timeout in seconds. The client will perform rekey in this
744 time interval. If set to zero, the default value will be used. */
745 unsigned int rekey_secs;
747 /* Connection authentication method request timeout. If server does not
748 reply back the current authentication method when we've requested it
749 in this time interval we'll assume the reply will not come at all.
750 If set to zero, the default value (2 seconds) will be used. */
751 unsigned int connauth_request_secs;
753 /* Nickname format string. This can be used to order the client library
754 to save the nicknames in the library in a certain format. Since
755 nicknames are not unique in SILC it is possible to have multiple same
756 nicknames. Using this format string it is possible to order the library
757 to separate the multiple same nicknames from each other. The format
758 types are defined below and they can appear in any order in the format
759 string. If this is NULL then default format is used which is the
760 default nickname without anything else. The string MUST be NULL
763 Following format types are available:
765 %n nickname - the real nickname returned by the server (mandatory)
766 %h hostname - the stripped hostname of the client
767 %H full hostname - the full hostname of the client
768 %s server name - the server name the client is connected
769 %S full server - the full server name the client is connected
770 %a number - ascending number in case there are several
771 same nicknames (fe. nick@host and nick@host2)
773 Example format strings: "%n@%h%a" (fe. nick@host, nick@host2)
774 "%a!%n@%s" (fe. nick@server, 2!nick@server)
775 "%n@%H" (fe. nick@host.domain.com)
777 By default this format is employed to the nicknames by the libary
778 only when there appears multiple same nicknames. If the library has
779 only one nickname cached the nickname is saved as is and without the
780 defined format. If you want always to save the nickname in the defined
781 format set the boolean field `nickname_force_format' to value TRUE.
783 char nickname_format[32];
785 /* If this is set to TRUE then the `nickname_format' is employed to all
786 saved nicknames even if there are no multiple same nicknames in the
787 cache. By default this is FALSE, which means that the `nickname_format'
788 is employed only if the library will receive a nickname that is
789 already saved in the cache. It is recommended to leave this to FALSE
791 bool nickname_force_format;
793 /* A callback function provided by the application for the library to
794 parse the nickname from the formatted nickname string. Even though
795 the libary formats the nicknames the application knows generally the
796 format better so this function should be provided for the library
797 if the application sets the `nickname_format' field. The library
798 will call this to get the true nickname from the provided formatted
799 nickname string whenever it needs the true nickname. */
800 SilcNicknameFormatParse nickname_parse;
802 /* If this is set to TRUE then the client will ignore all incoming
803 Requested Attributes queries and does not reply anything back. This
804 usually leads into situation where server does not anymore send
805 the queries after seeing that client does not reply anything back.
806 If your application does not support Requested Attributes or you do
807 not want to use them set this to TRUE. See SilcAttribute and
808 silc_client_attribute_add for more information on attributes. */
809 bool ignore_requested_attributes;
815 /* Initialization functions (client.c) */
817 /****f* silcclient/SilcClientAPI/silc_client_alloc
821 * SilcClient silc_client_alloc(SilcClientOperations *ops,
822 * SilcClientParams *params,
824 * const char *silc_version);
828 * Allocates new client object. This has to be done before client may
829 * work. After calling this one must call silc_client_init to initialize
830 * the client. The `application' is application specific user data pointer
831 * and caller must free it. The `silc_version' is the application version
832 * that will be used to compare against remote host's (usually a server)
833 * version string. The `application' context is accessible by the
834 * application by client->application, client being SilcClient.
837 SilcClient silc_client_alloc(SilcClientOperations *ops,
838 SilcClientParams *params,
840 const char *version_string);
842 /****f* silcclient/SilcClientAPI/silc_client_free
846 * void silc_client_free(SilcClient client);
850 * Frees client object and its internals. The execution of the client
851 * should be stopped with silc_client_stop function before calling
855 void silc_client_free(SilcClient client);
857 /****f* silcclient/SilcClientAPI/silc_client_init
861 * bool silc_client_init(SilcClient client);
865 * Initializes the client. This makes all the necessary steps to make
866 * the client ready to be run. One must call silc_client_run to run the
867 * client. Returns FALSE if error occurred, TRUE otherwise.
870 bool silc_client_init(SilcClient client);
872 /****f* silcclient/SilcClientAPI/silc_client_run
876 * void silc_client_run(SilcClient client);
880 * Runs the client. This starts the scheduler from the utility library.
881 * When this functions returns the execution of the appliation is over.
882 * The client must be initialized before calling this.
885 void silc_client_run(SilcClient client);
887 /****f* silcclient/SilcClientAPI/silc_client_run_one
891 * void silc_client_run_one(SilcClient client);
895 * Runs the client and returns immeadiately. This function is used when
896 * the SILC Client object indicated by the `client' is run under some
897 * other scheduler, or event loop or main loop. On GUI applications,
898 * for example this may be desired to used to run the client under the
899 * GUI application's main loop. Typically the GUI application would
900 * register an idle task that calls this function multiple times in
901 * a second to quickly process the SILC specific data.
904 void silc_client_run_one(SilcClient client);
906 /****f* silcclient/SilcClientAPI/silc_client_stop
910 * void silc_client_stop(SilcClient client);
914 * Stops the client. This is called to stop the client and thus to stop
915 * the program. The client context must be freed with the silc_client_free
919 void silc_client_stop(SilcClient client);
922 /* Connecting functions (client.c) */
924 /****s* silcclient/SilcClientAPI/SilcClientConnectionParams
928 * typedef struct { ... } SilcClientConnectionParams;
932 * Client connection parameters. This can be filled by the application
933 * and given as argument to silc_client_connect_to_server or to
934 * silc_client_add_connection.
939 /* The SILC session detachment data that was returned by `detach' client
940 operation when the application detached from the network. Application
941 is responsible of saving the data and giving it as argument here
942 for resuming the session in the SILC network.
944 If this is provided here the client library will attempt to resume
945 the session in the network. After the connection is created
946 successfully, the application is responsible of setting the user
947 interface for user into the same state it was before detaching (showing
948 same channels, channel modes, etc). It can do this by fetching the
949 information (like joined channels) from the client library. */
950 unsigned char *detach_data;
951 SilcUInt32 detach_data_len;
953 } SilcClientConnectionParams;
956 /****f* silcclient/SilcClientAPI/silc_client_connect_to_server
960 * int silc_client_connect_to_server(SilcClient client,
961 * SilcClientConnectionParams *params,
962 * int port, char *host, void *context);
966 * Connects to remote server. This is the main routine used to connect
967 * to SILC server. Returns -1 on error and the created socket otherwise.
968 * The `context' is user context that is saved into the SilcClientConnection
969 * that is created after the connection is created. Note that application
970 * may handle the connecting process outside the library. If this is the
971 * case then this function is not used at all. When the connecting is
972 * done the `connect' client operation is called, and the `context' is
973 * accessible with conn->context, conn being SilcClientConnection.
974 * If the `params' is provided they are used by the routine.
977 int silc_client_connect_to_server(SilcClient client,
978 SilcClientConnectionParams *params,
979 int port, char *host, void *context);
981 /****f* silcclient/SilcClientAPI/silc_client_add_connection
986 * SilcClientConnection
987 * silc_client_add_connection(SilcClient client,
988 * SilcClientConnectionParams *params,
989 * char *hostname, int port, void *context);
993 * Allocates and adds new connection to the client. This adds the allocated
994 * connection to the connection table and returns a pointer to it. A client
995 * can have multiple connections to multiple servers. Every connection must
996 * be added to the client using this function. User data `context' may
997 * be sent as argument. If the `params' is provided they are used by
1002 * This function is normally used only if the application performed
1003 * the connecting outside the library, and did not called the
1004 * silc_client_connect_to_server function at all. The library
1005 * however may use this internally.
1008 SilcClientConnection
1009 silc_client_add_connection(SilcClient client,
1010 SilcClientConnectionParams *params,
1011 char *hostname, int port, void *context);
1013 /****f* silcclient/SilcClientAPI/silc_client_del_connection
1017 * void silc_client_del_connection(SilcClient client,
1018 * SilcClientConnection conn);
1022 * Removes connection from client. Frees all memory. The library
1023 * call this function automatically for all connection contexts.
1024 * The application however may free the connection contexts it has
1028 void silc_client_del_connection(SilcClient client, SilcClientConnection conn);
1030 /****f* silcclient/SilcClientAPI/silc_client_add_socket
1034 * void silc_client_add_socket(SilcClient client,
1035 * SilcSocketConnection sock);
1039 * Adds listener socket to the listener sockets table. This function is
1040 * used to add socket objects that are listeners to the client. This should
1041 * not be used to add other connection objects.
1044 void silc_client_add_socket(SilcClient client, SilcSocketConnection sock);
1046 /****f* silcclient/SilcClientAPI/silc_client_del_socket
1050 * void silc_client_del_socket(SilcClient client,
1051 * SilcSocketConnection sock);
1055 * Deletes listener socket from the listener sockets table. If the
1056 * application has added a socket with silc_client_add_socket it must
1057 * also free it using this function.
1060 void silc_client_del_socket(SilcClient client, SilcSocketConnection sock);
1062 /****f* silcclient/SilcClientAPI/silc_client_start_key_exchange
1066 * void silc_client_start_key_exchange(SilcClient client,
1067 * SilcClientConnection conn,
1072 * Start SILC Key Exchange (SKE) protocol to negotiate shared secret
1073 * key material between client and server. This function can be called
1074 * directly if application is performing its own connecting and does not
1075 * use the connecting provided by this library. This function is normally
1076 * used only if the application performed the connecting outside the
1077 * library. The library however may use this internally. After the
1078 * key exchange is performed the `connect' client operation is called.
1082 * The silc_client_add_connection must be called before calling this
1083 * function to create the SilcClientConnection context for this
1087 void silc_client_start_key_exchange(SilcClient client,
1088 SilcClientConnection conn,
1091 /****f* silcclient/SilcClientAPI/silc_client_close_connection
1095 * void silc_client_close_connection(SilcClient client,
1096 * SilcClientConnection conn);
1100 * Closes connection to remote end. Free's all allocated data except
1101 * for some information such as nickname etc. that are valid at all time.
1102 * Usually application does not need to directly call this, except
1103 * when explicitly closing the connection, or if an error occurs
1104 * during connection to server (see 'connect' client operation for
1105 * more information).
1108 void silc_client_close_connection(SilcClient client,
1109 SilcClientConnection conn);
1112 /* Message sending functions (client_channel.c and client_prvmsg.c) */
1114 /****f* silcclient/SilcClientAPI/silc_client_send_channel_message
1118 * void silc_client_send_channel_message(SilcClient client,
1119 * SilcClientConnection conn,
1120 * SilcChannelEntry channel,
1121 * SilcChannelPrivateKey key,
1122 * SilcMessageFlags flags,
1123 * unsigned char *data,
1124 * SilcUInt32 data_len,
1129 * Sends packet to the `channel'. Packet to channel is always encrypted
1130 * differently from "normal" packets. SILC header of the packet is
1131 * encrypted with the next receiver's key and the rest of the packet is
1132 * encrypted with the channel specific key. Padding and HMAC is computed
1133 * with the next receiver's key. The `data' is the channel message. If
1134 * the `force_send' is TRUE then the packet is sent immediately.
1136 * If `key' is provided then that private key is used to encrypt the
1137 * channel message. If it is not provided, private keys has not been
1138 * set at all, the normal channel key is used automatically. If private
1139 * keys are set then the first key (the key that was added first as
1140 * private key) is used.
1142 * If the `flags' includes SILC_MESSAGE_FLAG_SIGNED the message will be
1143 * digitally signed with the SILC key pair.
1146 void silc_client_send_channel_message(SilcClient client,
1147 SilcClientConnection conn,
1148 SilcChannelEntry channel,
1149 SilcChannelPrivateKey key,
1150 SilcMessageFlags flags,
1151 unsigned char *data,
1152 SilcUInt32 data_len,
1155 /****f* silcclient/SilcClientAPI/silc_client_send_private_message
1159 * void silc_client_send_private_message(SilcClient client,
1160 * SilcClientConnection conn,
1161 * SilcClientEntry client_entry,
1162 * SilcMessageFlags flags,
1163 * unsigned char *data,
1164 * SilcUInt32 data_len,
1169 * Sends private message to remote client. If private message key has
1170 * not been set with this client then the message will be encrypted using
1171 * normal session keys. Private messages are special packets in SILC
1172 * network hence we need this own function for them. This is similar
1173 * to silc_client_packet_send_to_channel except that we send private
1174 * message. The `data' is the private message. If the `force_send' is
1175 * TRUE the packet is sent immediately.
1177 * If the `flags' includes SILC_MESSAGE_FLAG_SIGNED the message will be
1178 * digitally signed with the SILC key pair.
1181 void silc_client_send_private_message(SilcClient client,
1182 SilcClientConnection conn,
1183 SilcClientEntry client_entry,
1184 SilcMessageFlags flags,
1185 unsigned char *data,
1186 SilcUInt32 data_len,
1190 /* Client and Channel entry retrieval (idlist.c) */
1192 /****f* silcclient/SilcClientAPI/SilcGetClientCallback
1196 * typedef void (*SilcGetClientCallback)(SilcClient client,
1197 * SilcClientConnection conn,
1198 * SilcClientEntry *clients,
1199 * SilcUInt32 clients_count,
1204 * Callback function given to the silc_client_get_client function. The
1205 * found entries are allocated into the `clients' array. The array must
1206 * not be freed by the receiver, the library will free it later. If the
1207 * `clients' is NULL, no such clients exist in the SILC Network.
1210 typedef void (*SilcGetClientCallback)(SilcClient client,
1211 SilcClientConnection conn,
1212 SilcClientEntry *clients,
1213 SilcUInt32 clients_count,
1216 /****f* silcclient/SilcClientAPI/silc_client_get_clients
1220 * void silc_client_get_clients(SilcClient client,
1221 * SilcClientConnection conn,
1222 * const char *nickname,
1223 * const char *server,
1224 * SilcGetClientCallback completion,
1229 * Finds client entry or entries by the `nickname' and `server'. The
1230 * completion callback will be called when the client entries has been
1231 * found. After the server returns the client information it is cached
1232 * and can be accesses locally at a later time. The resolving is done
1233 * with IDENTIFY command.
1237 * NOTE: This function is always asynchronous and resolves the client
1238 * information from the server. Thus, if you already know the client
1239 * information then use the silc_client_get_client_by_id function to
1240 * get the client entry since this function may be very slow and should
1241 * be used only to initially get the client entries.
1243 * Since this routine resolves with IDENTIFY command only the relevant
1244 * information (user's nickname and username) is resolved. For example,
1245 * user's real name, channel list and others are not resolved. Caller
1246 * can/must resolve those separately if they are needed (for example,
1247 * with silc_client_get_client_by_id_resolve).
1250 void silc_client_get_clients(SilcClient client,
1251 SilcClientConnection conn,
1252 const char *nickname,
1254 SilcGetClientCallback completion,
1257 /****f* silcclient/SilcClientAPI/silc_client_get_clients_local
1261 * SilcClientEntry *silc_client_get_clients_local(SilcClient client,
1262 * SilcClientConnection conn,
1263 * const char *nickname,
1264 * const char *format,
1265 * SilcUInt32 *clients_count);
1269 * Same as silc_client_get_clients function but does not resolve anything
1270 * from the server. This checks local cache and returns all matching
1271 * clients from the local cache. If none was found this returns NULL.
1272 * The `nickname' is the real nickname of the client, and the `format'
1273 * is the formatted nickname to find exact match from multiple found
1274 * entries. The format must be same as given in the SilcClientParams
1275 * structure to the client library. If the `format' is NULL all found
1276 * clients by `nickname' are returned. The caller must return the
1280 SilcClientEntry *silc_client_get_clients_local(SilcClient client,
1281 SilcClientConnection conn,
1282 const char *nickname,
1284 SilcUInt32 *clients_count);
1286 /****f* silcclient/SilcClientAPI/silc_client_get_clients_by_channel
1290 * void silc_client_get_clients_by_channel(SilcClient client,
1291 * SilcClientConnection conn,
1292 * SilcChannelEntry channel,
1293 * SilcGetClientCallback completion,
1298 * Gets client entries by the channel indicated by `channel'. Thus,
1299 * it resovles the users currently on that channel. If all users are
1300 * already resolved this returns the users from the channel. If the
1301 * users are resolved only partially this resolves the complete user
1302 * information. If no users are resolved on this channel at all, this
1303 * calls USERS command to resolve all users on the channel. The `completion'
1304 * will be called after the entries are available. When server returns
1305 * the client information it will be cached and can be accessed locally
1308 * This function can be used for example in SILC_COMMAND_JOIN command
1309 * reply handling in application to resolve users on that channel. It
1310 * also can be used after calling silc_client_get_channel_resolve to
1311 * resolve users on that channel.
1315 * The resolving is done with WHOIS command. For this reason this
1316 * command may take a long time because it resolves detailed user
1320 void silc_client_get_clients_by_channel(SilcClient client,
1321 SilcClientConnection conn,
1322 SilcChannelEntry channel,
1323 SilcGetClientCallback completion,
1326 /****f* silcclient/SilcClientAPI/silc_client_get_clients_by_list
1330 * void silc_client_get_clients_by_list(SilcClient client,
1331 * SilcClientConnection conn,
1332 * SilcUInt32 list_count,
1333 * SilcBuffer client_id_list,
1334 * SilcGetClientCallback completion,
1339 * Gets client entries by the list of client ID's `client_id_list'. This
1340 * always resolves those client ID's it does not know yet from the server
1341 * so this function might take a while. The `client_id_list' is a list
1342 * of ID Payloads added one after other. JOIN command reply and USERS
1343 * command reply for example returns this sort of list. The `completion'
1344 * will be called after the entries are available. When server returns
1345 * the client information it will be cached and can be accessed locally
1350 * The resolving is done with IDENTIFY command. This means that only
1351 * the relevant information of user (it's nickname and username) is
1352 * resolved. For example, user's real name, channel lists and others
1353 * are not resolved. Caller can/must resolve those separately if they
1354 * are needed (for example, with silc_client_get_client_by_id_resolve).
1357 void silc_client_get_clients_by_list(SilcClient client,
1358 SilcClientConnection conn,
1359 SilcUInt32 list_count,
1360 SilcBuffer client_id_list,
1361 SilcGetClientCallback completion,
1364 /****f* silcclient/SilcClientAPI/silc_client_get_client_by_id
1368 * SilcClientEntry silc_client_get_client_by_id(SilcClient client,
1369 * SilcClientConnection conn,
1370 * SilcClientID *client_id);
1374 * Find entry for client by the client's ID. Returns the entry or NULL
1375 * if the entry was not found. This checks the local cache and does
1376 * not resolve anything from server.
1379 SilcClientEntry silc_client_get_client_by_id(SilcClient client,
1380 SilcClientConnection conn,
1381 SilcClientID *client_id);
1383 /****f* silcclient/SilcClientAPI/silc_client_get_client_by_id_resolve
1388 * silc_client_get_client_by_id_resolve(SilcClient client,
1389 * SilcClientConnection conn,
1390 * SilcClientID *client_id,
1391 * SilcBuffer attributes,
1392 * SilcGetClientCallback completion,
1397 * Same as silc_client_get_client_by_id but will always resolve the
1398 * information from the server. Use this only if you know that you
1399 * do not have the entry and the only thing you know about the client
1400 * is its ID. When server returns the client information it will be
1401 * cache and can be accessed locally at a later time. The resolving
1402 * is done by sending WHOIS command.
1404 * If the `attributes' is non-NULL then the buffer includes Requested
1405 * Attributes which can be used to fetch very detailed information
1406 * about the user. If it is NULL then only normal WHOIS query is
1407 * made (for more information about attributes see SilcAttribute).
1408 * Caller may create the `attributes' with silc_client_attributes_request
1412 void silc_client_get_client_by_id_resolve(SilcClient client,
1413 SilcClientConnection conn,
1414 SilcClientID *client_id,
1415 SilcBuffer attributes,
1416 SilcGetClientCallback completion,
1419 /****f* silcclient/SilcClientAPI/silc_client_del_client
1423 * bool silc_client_del_client(SilcClient client, SilcClientConnection conn,
1424 * SilcClientEntry client_entry)
1428 * Removes client from local cache by the client entry indicated by
1429 * the `client_entry'. Returns TRUE if the deletion were successful.
1432 bool silc_client_del_client(SilcClient client, SilcClientConnection conn,
1433 SilcClientEntry client_entry);
1435 /****f* silcclient/SilcClientAPI/SilcGetChannelCallback
1439 * typedef void (*SilcGetChannelCallback)(SilcClient client,
1440 * SilcClientConnection conn,
1441 * SilcChannelEntry *channels,
1442 * SilcUInt32 channels_count,
1447 * Callback function given to the silc_client_get_channel_* functions.
1448 * The found entries are allocated into the `channels' array. The array
1449 * must not be freed by the receiver, the library will free it later.
1450 * If the `channel' is NULL, no such channel exist in the SILC Network.
1453 typedef void (*SilcGetChannelCallback)(SilcClient client,
1454 SilcClientConnection conn,
1455 SilcChannelEntry *channels,
1456 SilcUInt32 channels_count,
1459 /****f* silcclient/SilcClientAPI/silc_client_get_channel
1463 * SilcChannelEntry silc_client_get_channel(SilcClient client,
1464 * SilcClientConnection conn,
1465 * char *channel_name);
1469 * Finds entry for channel by the channel name. Returns the entry or NULL
1470 * if the entry was not found. It is found only if the client is joined
1471 * to the channel. Use silc_client_get_channel_resolve or
1472 * silc_client_get_channel_by_id_resolve to resolve channel that client
1476 SilcChannelEntry silc_client_get_channel(SilcClient client,
1477 SilcClientConnection conn,
1478 char *channel_name);
1480 /****f* silcclient/SilcClientAPI/silc_client_get_channel_resolve
1484 * void silc_client_get_channel_resolve(SilcClient client,
1485 * SilcClientConnection conn,
1486 * char *channel_name,
1487 * SilcGetChannelCallback completion,
1492 * Resolves entry for channel by the channel name from the server.
1493 * The resolving is done with IDENTIFY command. Note that users on
1494 * the channel are not resolved at the same time. Use for example
1495 * silc_client_get_clients_by_channel to resolve all users on a channel.
1498 void silc_client_get_channel_resolve(SilcClient client,
1499 SilcClientConnection conn,
1501 SilcGetChannelCallback completion,
1504 /****f* silcclient/SilcClientAPI/silc_client_get_channel_by_id
1509 * silc_client_get_channel_by_id(SilcClient client,
1510 * SilcClientConnection conn,
1511 * SilcChannelID *channel_id);
1515 * Finds channel entry by the channel name. Returns the entry or NULL
1516 * if it was not found.
1519 SilcChannelEntry silc_client_get_channel_by_id(SilcClient client,
1520 SilcClientConnection conn,
1521 SilcChannelID *channel_id);
1523 /****f* silcclient/SilcClientAPI/silc_client_get_channel_by_id_resolve
1528 * silc_client_get_channel_by_id_resolve(SilcClient client,
1529 * SilcClientConnection conn,
1530 * SilcChannelID *channel_id,
1531 * SilcGetClientCallback completion,
1536 * Resolves the channel information (its name mainly) from the server
1537 * by the `channel_id'. Use this only if you know that you do not have
1538 * the entry cached locally. The resolving is done with IDENTIFY command.
1540 * Note that users on the channel are not resolved at the same time.
1541 * Use for example silc_client_get_clients_by_channel to resolve all
1542 * users on a channel.
1545 void silc_client_get_channel_by_id_resolve(SilcClient client,
1546 SilcClientConnection conn,
1547 SilcChannelID *channel_id,
1548 SilcGetChannelCallback completion,
1551 /****f* silcclient/SilcClientAPI/silc_client_del_channel
1555 * bool silc_client_del_channel(SilcClient client,
1556 * SilcClientConnection conn,
1557 * SilcChannelEntry channel)
1561 * Removes channel from local cache by the channel entry indicated by
1562 * the `channel'. Returns TRUE if the deletion were successful.
1565 bool silc_client_del_channel(SilcClient client, SilcClientConnection conn,
1566 SilcChannelEntry channel);
1568 /****f* silcclient/SilcClientAPI/silc_client_get_server
1572 * SilcServerEntry silc_client_get_server(SilcClient client,
1573 * SilcClientConnection conn,
1574 * char *server_name)
1578 * Finds entry for server by the server name. Returns the entry or NULL
1579 * if the entry was not found.
1582 SilcServerEntry silc_client_get_server(SilcClient client,
1583 SilcClientConnection conn,
1586 /****f* silcclient/SilcClientAPI/silc_client_get_server_by_id
1590 * SilcServerEntry silc_client_get_server_by_id(SilcClient client,
1591 * SilcClientConnection conn,
1592 * SilcServerID *server_id);
1596 * Finds entry for server by the server ID. Returns the entry or NULL
1597 * if the entry was not found.
1600 SilcServerEntry silc_client_get_server_by_id(SilcClient client,
1601 SilcClientConnection conn,
1602 SilcServerID *server_id);
1604 /****f* silcclient/SilcClientAPI/silc_client_del_server
1608 * bool silc_client_del_server(SilcClient client, SilcClientConnection conn,
1609 * SilcServerEntry server);
1613 * Removes server from local cache by the server entry indicated by
1614 * the `server'. Returns TRUE if the deletion were successful.
1617 bool silc_client_del_server(SilcClient client, SilcClientConnection conn,
1618 SilcServerEntry server);
1620 /****f* silcclient/SilcClientAPI/silc_client_on_channel
1624 * SilcChannelUser silc_client_on_channel(SilcChannelEntry channel,
1625 * SilcClientEntry client_entry);
1629 * Returns the SilcChannelUser entry if the `client_entry' is joined on the
1630 * channel indicated by the `channel'. NULL if client is not joined on
1634 SilcChannelUser silc_client_on_channel(SilcChannelEntry channel,
1635 SilcClientEntry client_entry);
1637 /* Command management (command.c) */
1639 /****f* silcclient/SilcClientAPI/silc_client_command_call
1643 * bool silc_client_command_call(SilcClient client,
1644 * SilcClientConnection conn,
1645 * const char *command_line, ...);
1649 * Calls and executes the command indicated by the `command_name'.
1650 * The `command_line' is a string which includes the command's name and
1651 * its arguments separated with whitespaces (' '). If `command_line'
1652 * is non-NULL then all variable arguments are ignored by default.
1654 * If `command_line' is NULL, then the variable arguments define the
1655 * command's name and its arguments. The first variable argument must
1656 * be the command name. The variable argument list must be terminated
1659 * Returns FALSE if the command is not known and TRUE after command.
1660 * execution. The "command" client operation is called when the
1661 * command is executed to indicate whether the command executed
1662 * successfully or not.
1664 * The "command_reply" client operation will be called when reply is
1665 * received from the server to the command. Application may also use
1666 * the silc_client_command_pending to attach to the command reply.
1667 * The command identifier for silc_client_command_pending function after
1668 * this function call is conn->cmd_ident, which application may use.
1672 * silc_client_command_call(client, conn, NULL, "PING", "silc.silcnet.org",
1674 * silc_client_command_call(client, conn, "PING silc.silcnet.org");
1677 bool silc_client_command_call(SilcClient client,
1678 SilcClientConnection conn,
1679 const char *command_line, ...);
1681 /****f* silcclient/SilcClientAPI/silc_client_command_send
1685 * void silc_client_command_send(SilcClient client,
1686 * SilcClientConnection conn,
1687 * SilcCommand command, SilcUInt16 ident,
1688 * SilcUInt32 argc, ...);
1692 * Generic function to send any command. The arguments must be sent already
1693 * encoded into correct form and in correct order. If application wants
1694 * to perform the commands by itself, it can do so and send the data
1695 * directly to the server using this function. If application is using
1696 * the silc_client_command_call, this function is usually not used.
1697 * Note that this overriders the Client Librarys commands and sends
1698 * the command packet directly to server.
1700 * The variable arguments are a pair of { type, data, data_length },
1701 * and the `argc' is the number of these pairs.
1705 * silc_client_command_send(client, conn, SILC_COMMAND_WHOIS, 0, 1,
1706 * 1, nickname, strlen(nickname));
1709 void silc_client_command_send(SilcClient client, SilcClientConnection conn,
1710 SilcCommand command, SilcUInt16 ident,
1711 SilcUInt32 argc, ...);
1713 /****f* silcclient/SilcClientAPI/silc_client_command_pending
1717 * void silc_client_command_pending(SilcClientConnection conn,
1718 * SilcCommand reply_cmd,
1720 * SilcCommandCb callback,
1725 * This function can be used to add pending command callback to be
1726 * called when an command reply is received to an earlier sent command.
1727 * The `reply_cmd' is the command that must be received in order for
1728 * the pending command callback indicated by `callback' to be called.
1729 * The `callback' will deliver the `context' and
1730 * SilcClientCommandReplyContext which includes the internals of the
1733 * The `ident' is a command identifier which was set for the earlier
1734 * sent command. The command reply will include the same identifier
1735 * and pending command callback will be called when the reply is
1736 * received with the same command identifier. It is possible to
1737 * add multiple pending command callbacks for same command and for
1740 * Application may use this function to add its own command reply
1741 * handlers if it wishes not to use the standard `command_reply'
1742 * client operation. However, note that the pending command callback
1743 * does not deliver parsed command reply, but application must parse
1746 * Note also that the application is notified about the received command
1747 * reply through the `command_reply' client operation before calling
1748 * the `callback` pending command callback. That is the normal
1749 * command reply handling, and is called regardless whether pending
1750 * command callbacks are used or not.
1752 * Commands that application calls with silc_client_command_call
1753 * will use a command identifier from conn->cmd_ident variable. After
1754 * calling the silc_client_command_call, the conn->cmd_ident includes
1755 * the command identifier that was used for the command sending.
1759 * silc_client_command_call(client, conn, "PING silc.silcnet.org");
1760 * silc_client_command_pending(conn, SILC_COMMAND_PING, conn->cmd_ident,
1761 * my_ping_handler, my_ping_context);
1764 void silc_client_command_pending(SilcClientConnection conn,
1765 SilcCommand reply_cmd,
1767 SilcCommandCb callback,
1771 /* Private Message key management (client_prvmsg.c) */
1773 /****f* silcclient/SilcClientAPI/silc_client_add_private_message_key
1777 * bool silc_client_add_private_message_key(SilcClient client,
1778 * SilcClientConnection conn,
1779 * SilcClientEntry client_entry,
1780 * const char *cipher,
1782 * unsigned char *key,
1783 * SilcUInt32 key_len,
1784 * bool generate_key,
1789 * Adds private message key to the client library. The key will be used to
1790 * encrypt all private message between the client and the remote client
1791 * indicated by the `client_entry'. If the `key' is NULL and the boolean
1792 * value `generate_key' is TRUE the library will generate random key.
1793 * The `key' maybe for example pre-shared-key, passphrase or similar.
1794 * The `cipher' and `hmac' MAY be provided but SHOULD be NULL to assure
1795 * that the requirements of the SILC protocol are met. The API, however,
1796 * allows to allocate any cipher and HMAC.
1798 * If `responder' is TRUE then the sending and receiving keys will be
1799 * set according the client being the receiver of the private key. If
1800 * FALSE the client is being the sender (or negotiator) of the private
1803 * It is not necessary to set key for normal private message usage. If the
1804 * key is not set then the private messages are encrypted using normal
1805 * session keys. Setting the private key, however, increases the security.
1807 * Returns FALSE if the key is already set for the `client_entry', TRUE
1811 bool silc_client_add_private_message_key(SilcClient client,
1812 SilcClientConnection conn,
1813 SilcClientEntry client_entry,
1821 /****f* silcclient/SilcClientAPI/silc_client_add_private_message_key_ske
1826 * silc_client_add_private_message_key_ske(SilcClient client,
1827 * SilcClientConnection conn,
1828 * SilcClientEntry client_entry,
1829 * const char *cipher,
1831 * SilcSKEKeyMaterial *key);
1835 * Same as silc_client_add_private_message_key but takes the key material
1836 * from the SKE key material structure. This structure is received if
1837 * the application uses the silc_client_send_key_agreement to negotiate
1838 * the key material. The `cipher' and `hmac' SHOULD be provided as it is
1839 * negotiated also in the SKE protocol.
1842 bool silc_client_add_private_message_key_ske(SilcClient client,
1843 SilcClientConnection conn,
1844 SilcClientEntry client_entry,
1847 SilcSKEKeyMaterial *key,
1850 /****f* silcclient/SilcClientAPI/silc_client_del_private_message_key
1854 * bool silc_client_del_private_message_key(SilcClient client,
1855 * SilcClientConnection conn,
1856 * SilcClientEntry client_entry);
1860 * Removes the private message from the library. The key won't be used
1861 * after this to protect the private messages with the remote `client_entry'
1862 * client. Returns FALSE on error, TRUE otherwise.
1865 bool silc_client_del_private_message_key(SilcClient client,
1866 SilcClientConnection conn,
1867 SilcClientEntry client_entry);
1869 /****f* silcclient/SilcClientAPI/silc_client_list_private_message_keys
1873 * SilcPrivateMessageKeys
1874 * silc_client_list_private_message_keys(SilcClient client,
1875 * SilcClientConnection conn,
1876 * SilcUInt32 *key_count);
1880 * Returns array of set private message keys associated to the connection
1881 * `conn'. Returns allocated SilcPrivateMessageKeys array and the array
1882 * count to the `key_count' argument. The array must be freed by the caller
1883 * by calling the silc_client_free_private_message_keys function. Note:
1884 * the keys returned in the array is in raw format. It might not be desired
1885 * to show the keys as is. The application might choose not to show the keys
1886 * at all or to show the fingerprints of the keys.
1889 SilcPrivateMessageKeys
1890 silc_client_list_private_message_keys(SilcClient client,
1891 SilcClientConnection conn,
1892 SilcUInt32 *key_count);
1894 /****f* silcclient/SilcClientAPI/silc_client_free_private_message_keys
1898 * void silc_client_free_private_message_keys(SilcPrivateMessageKeys keys,
1899 * SilcUInt32 key_count);
1903 * Frees the SilcPrivateMessageKeys array returned by the function
1904 * silc_client_list_private_message_keys.
1907 void silc_client_free_private_message_keys(SilcPrivateMessageKeys keys,
1908 SilcUInt32 key_count);
1911 /* Channel private key management (client_channel.c,
1912 SilcChannelPrivateKey is defined in idlist.h) */
1914 /****f* silcclient/SilcClientAPI/silc_client_add_channel_private_key
1918 * bool silc_client_add_channel_private_key(SilcClient client,
1919 * SilcClientConnection conn,
1920 * SilcChannelEntry channel,
1924 * unsigned char *key,
1925 * SilcUInt32 key_len);
1929 * Adds private key for channel. This may be set only if the channel's mode
1930 * mask includes the SILC_CHANNEL_MODE_PRIVKEY. This returns FALSE if the
1931 * mode is not set. When channel has private key then the messages are
1932 * encrypted using that key. All clients on the channel must also know the
1933 * key in order to decrypt the messages. However, it is possible to have
1934 * several private keys per one channel. In this case only some of the
1935 * clients on the channel may know the one key and only some the other key.
1936 * The `name' can be application given name for the key.
1938 * The private key for channel is optional. If it is not set then the
1939 * channel messages are encrypted using the channel key generated by the
1940 * server. However, setting the private key (or keys) for the channel
1941 * significantly adds security. If more than one key is set the library
1942 * will automatically try all keys at the message decryption phase. Note:
1943 * setting many keys slows down the decryption phase as all keys has to
1944 * be tried in order to find the correct decryption key. However, setting
1945 * a few keys does not have big impact to the decryption performace.
1949 * NOTE: This is entirely local setting. The key set using this function
1950 * is not sent to the network at any phase.
1952 * NOTE: If the key material was originated by the SKE protocol (using
1953 * silc_client_send_key_agreement) then the `key' MUST be the
1954 * key->send_enc_key as this is dictated by the SILC protocol. However,
1955 * currently it is not expected that the SKE key material would be used
1956 * as channel private key. However, this API allows it.
1959 bool silc_client_add_channel_private_key(SilcClient client,
1960 SilcClientConnection conn,
1961 SilcChannelEntry channel,
1966 SilcUInt32 key_len);
1968 /****f* silcclient/SilcClientAPI/silc_client_del_channel_private_keys
1972 * bool silc_client_del_channel_private_keys(SilcClient client,
1973 * SilcClientConnection conn,
1974 * SilcChannelEntry channel);
1978 * Removes all private keys from the `channel'. The old channel key is used
1979 * after calling this to protect the channel messages. Returns FALSE on
1980 * on error, TRUE otherwise.
1983 bool silc_client_del_channel_private_keys(SilcClient client,
1984 SilcClientConnection conn,
1985 SilcChannelEntry channel);
1987 /****f* silcclient/SilcClientAPI/silc_client_del_channel_private_key
1991 * bool silc_client_del_channel_private_key(SilcClient client,
1992 * SilcClientConnection conn,
1993 * SilcChannelEntry channel,
1994 * SilcChannelPrivateKey key);
1998 * Removes and frees private key `key' from the channel `channel'.
1999 * The `key' is retrieved by calling the function
2000 * silc_client_list_channel_private_keys. The key is not used after
2001 * this. If the key was last private key then the old channel key is
2002 * used hereafter to protect the channel messages. This returns FALSE
2003 * on error, TRUE otherwise.
2006 bool silc_client_del_channel_private_key(SilcClient client,
2007 SilcClientConnection conn,
2008 SilcChannelEntry channel,
2009 SilcChannelPrivateKey key);
2011 /****f* silcclient/SilcClientAPI/silc_client_list_channel_private_keys
2015 * SilcChannelPrivateKey *
2016 * silc_client_list_channel_private_keys(SilcClient client,
2017 * SilcClientConnection conn,
2018 * SilcChannelEntry channel,
2019 * SilcUInt32 *key_count);
2023 * Returns array (pointers) of private keys associated to the `channel'.
2024 * The caller must free the array by calling the function
2025 * silc_client_free_channel_private_keys. The pointers in the array may be
2026 * used to delete the specific key by giving the pointer as argument to the
2027 * function silc_client_del_channel_private_key.
2030 SilcChannelPrivateKey *
2031 silc_client_list_channel_private_keys(SilcClient client,
2032 SilcClientConnection conn,
2033 SilcChannelEntry channel,
2034 SilcUInt32 *key_count);
2036 /****f* silcclient/SilcClientAPI/silc_client_free_channel_private_keys
2040 * void silc_client_free_channel_private_keys(SilcChannelPrivateKey *keys,
2041 * SilcUInt32 key_count);
2045 * Frees the SilcChannelPrivateKey array.
2048 void silc_client_free_channel_private_keys(SilcChannelPrivateKey *keys,
2049 SilcUInt32 key_count);
2051 /****f* silcclient/SilcClientAPI/silc_client_current_channel_private_key
2055 * void silc_client_current_channel_private_key(SilcClient client,
2056 * SilcClientConnection conn,
2057 * SilcChannelEntry channel,
2058 * SilcChannelPrivateKey key);
2062 * Sets the `key' to be used as current channel private key on the
2063 * `channel'. Packet sent after calling this function will be secured
2067 void silc_client_current_channel_private_key(SilcClient client,
2068 SilcClientConnection conn,
2069 SilcChannelEntry channel,
2070 SilcChannelPrivateKey key);
2073 /* Key Agreement routines (client_keyagr.c) */
2075 /****f* silcclient/SilcClientAPI/silc_client_send_key_agreement
2079 * void silc_client_send_key_agreement(SilcClient client,
2080 * SilcClientConnection conn,
2081 * SilcClientEntry client_entry,
2084 * SilcUInt32 timeout_secs,
2085 * SilcKeyAgreementCallback completion,
2090 * Sends key agreement request to the remote client indicated by the
2091 * `client_entry'. If the caller provides the `hostname' and the `port'
2092 * arguments then the library will bind the client to that hostname and
2093 * that port for the key agreement protocol. It also sends the `hostname'
2094 * and the `port' in the key agreement packet to the remote client. This
2095 * would indicate that the remote client may initiate the key agreement
2096 * protocol to the `hostname' on the `port'. If port is zero then the
2097 * bound port is undefined (the operating system defines it).
2099 * If the `hostname' and `port' is not provided then empty key agreement
2100 * packet is sent to the remote client. The remote client may reply with
2101 * the same packet including its hostname and port. If the library receives
2102 * the reply from the remote client the `key_agreement' client operation
2103 * callback will be called to verify whether the user wants to perform the
2104 * key agreement or not.
2108 * NOTE: If the application provided the `hostname' and the `port' and the
2109 * remote side initiates the key agreement protocol it is not verified
2110 * from the user anymore whether the protocol should be executed or not.
2111 * By setting the `hostname' and `port' the user gives permission to
2112 * perform the protocol (we are responder in this case).
2114 * NOTE: If the remote side decides not to initiate the key agreement
2115 * or decides not to reply with the key agreement packet then we cannot
2116 * perform the key agreement at all. If the key agreement protocol is
2117 * performed the `completion' callback with the `context' will be called.
2118 * If remote side decides to ignore the request the `completion' will be
2119 * called after the specified timeout, `timeout_secs'.
2121 * NOTE: If the `hostname' and the `port' was not provided the `completion'
2122 * will not be called at all since this does nothing more than sending
2123 * a packet to the remote host.
2125 * NOTE: There can be only one active key agreement for one client entry.
2126 * Before setting new one, the old one must be finished (it is finished
2127 * after calling the completion callback) or the function
2128 * silc_client_abort_key_agreement must be called.
2131 void silc_client_send_key_agreement(SilcClient client,
2132 SilcClientConnection conn,
2133 SilcClientEntry client_entry,
2134 const char *hostname,
2135 const char *bindhost,
2137 SilcUInt32 timeout_secs,
2138 SilcKeyAgreementCallback completion,
2141 /****f* silcclient/SilcClientAPI/silc_client_perform_key_agreement
2146 * silc_client_perform_key_agreement(SilcClient client,
2147 * SilcClientConnection conn,
2148 * SilcClientEntry client_entry,
2151 * SilcKeyAgreementCallback completion,
2156 * Performs the actual key agreement protocol. Application may use this
2157 * to initiate the key agreement protocol. This can be called for example
2158 * after the application has received the `key_agreement' client operation,
2159 * and did not return TRUE from it.
2161 * The `hostname' is the remote hostname (or IP address) and the `port'
2162 * is the remote port. The `completion' callback with the `context' will
2163 * be called after the key agreement protocol.
2167 * NOTE: If the application returns TRUE in the `key_agreement' client
2168 * operation the library will automatically start the key agreement. In this
2169 * case the application must not call this function. However, application
2170 * may choose to just ignore the `key_agreement' client operation (and
2171 * merely just print information about it on the screen) and call this
2172 * function when the user whishes to do so (by, for example, giving some
2173 * specific command). Thus, the API provides both, automatic and manual
2174 * initiation of the key agreement. Calling this function is the manual
2175 * initiation and returning TRUE in the `key_agreement' client operation
2176 * is the automatic initiation.
2179 void silc_client_perform_key_agreement(SilcClient client,
2180 SilcClientConnection conn,
2181 SilcClientEntry client_entry,
2184 SilcKeyAgreementCallback completion,
2187 /****f* silcclient/SilcClientAPI/silc_client_perform_key_agreement_fd
2192 * silc_client_perform_key_agreement_fd(SilcClient client,
2193 * SilcClientConnection conn,
2194 * SilcClientEntry client_entry,
2197 * SilcKeyAgreementCallback completion,
2202 * Same as above but application has created already the connection to
2203 * the remote host. The `sock' is the socket to the remote connection.
2204 * Application can use this function if it does not want the client library
2205 * to create the connection.
2208 void silc_client_perform_key_agreement_fd(SilcClient client,
2209 SilcClientConnection conn,
2210 SilcClientEntry client_entry,
2213 SilcKeyAgreementCallback completion,
2216 /****f* silcclient/SilcClientAPI/silc_client_abort_key_agreement
2220 * void silc_client_abort_key_agreement(SilcClient client,
2221 * SilcClientConnection conn,
2222 * SilcClientEntry client_entry);
2226 * This function can be called to unbind the hostname and the port for
2227 * the key agreement protocol. However, this function has effect only
2228 * before the key agreement protocol has been performed. After it has
2229 * been performed the library will automatically unbind the port. The
2230 * `client_entry' is the client to which we sent the key agreement
2231 * request. The key agreement completion callback will be called
2232 * with SILC_KEY_AGREEMENT_ABORTED status.
2235 void silc_client_abort_key_agreement(SilcClient client,
2236 SilcClientConnection conn,
2237 SilcClientEntry client_entry);
2240 /* Misc functions */
2242 /****f* silcclient/SilcClientAPI/silc_client_set_away_message
2246 * void silc_client_set_away_message(SilcClient client,
2247 * SilcClientConnection conn,
2252 * Sets away `message'. The away message may be set when the client's
2253 * mode is changed to SILC_UMODE_GONE and the client whishes to reply
2254 * to anyone who sends private message. The `message' will be sent
2255 * automatically back to the the client who send private message. If
2256 * away message is already set this replaces the old message with the
2257 * new one. If `message' is NULL the old away message is removed.
2258 * The sender may freely free the memory of the `message'.
2261 void silc_client_set_away_message(SilcClient client,
2262 SilcClientConnection conn,
2265 /****f* silcclient/SilcClientAPI/SilcConnectionAuthRequest
2269 * typedef void (*SilcConnectionAuthRequest)(SilcClient client,
2270 * SilcClientConnection conn,
2271 * SilcAuthMethod auth_meth,
2276 * Connection authentication method request callback. This is called
2277 * by the client library after it has received the authentication method
2278 * that the application requested by calling the function
2279 * silc_client_request_authentication_method.
2282 typedef void (*SilcConnectionAuthRequest)(SilcClient client,
2283 SilcClientConnection conn,
2284 SilcAuthMethod auth_meth,
2287 /****f* silcclient/SilcClientAPI/silc_client_request_authentication_method
2292 * silc_client_request_authentication_method(SilcClient client,
2293 * SilcClientConnection conn,
2294 * SilcConnectionAuthRequest
2300 * This function can be used to request the current authentication method
2301 * from the server. This may be called when connecting to the server
2302 * and the client library requests the authentication data from the
2303 * application. If the application does not know the current authentication
2304 * method it can request it from the server using this function.
2305 * The `callback' with `context' will be called after the server has
2306 * replied back with the current authentication method.
2310 silc_client_request_authentication_method(SilcClient client,
2311 SilcClientConnection conn,
2312 SilcConnectionAuthRequest callback,
2315 /****d* silcclient/SilcClientAPI/SilcClientMonitorStatus
2319 * typedef enum { ... } SilcClientMonitorStatus;
2323 * File transmission session status types. These will indicate
2324 * the status of the file transmission session.
2329 SILC_CLIENT_FILE_MONITOR_KEY_AGREEMENT, /* In key agreemenet phase */
2330 SILC_CLIENT_FILE_MONITOR_SEND, /* Sending file */
2331 SILC_CLIENT_FILE_MONITOR_RECEIVE, /* Receiving file */
2332 SILC_CLIENT_FILE_MONITOR_GET,
2333 SILC_CLIENT_FILE_MONITOR_PUT,
2334 SILC_CLIENT_FILE_MONITOR_CLOSED, /* Session closed */
2335 SILC_CLIENT_FILE_MONITOR_ERROR, /* Error during session */
2336 } SilcClientMonitorStatus;
2339 /****d* silcclient/SilcClientAPI/SilcClientFileError
2343 * typedef enum { ... } SilcClientFileError;
2347 * File transmission error types. These types are returned by
2348 * some of the file transmission functions, and by the monitor
2349 * callback to indicate error.
2354 SILC_CLIENT_FILE_OK,
2355 SILC_CLIENT_FILE_ERROR,
2356 SILC_CLIENT_FILE_UNKNOWN_SESSION,
2357 SILC_CLIENT_FILE_ALREADY_STARTED,
2358 SILC_CLIENT_FILE_NO_SUCH_FILE,
2359 SILC_CLIENT_FILE_PERMISSION_DENIED,
2360 SILC_CLIENT_FILE_KEY_AGREEMENT_FAILED,
2361 } SilcClientFileError;
2364 /****f* silcclient/SilcClientAPI/SilcClientFileMonitor
2368 * typedef void (*SilcClientFileMonitor)(SilcClient client,
2369 * SilcClientConnection conn,
2370 * SilcClientMonitorStatus status,
2371 * SilcClientFileError error,
2372 * SilcUInt64 offset,
2373 * SilcUInt64 filesize,
2374 * SilcClientEntry client_entry,
2375 * SilcUInt32 session_id,
2376 * const char *filepath,
2381 * Monitor callback that is called during the file transmission to
2382 * monitor the transmission process. The `status' indicates the current
2383 * monitoring process. The `error' will indicate the error type
2384 * if `status' is SILC_CLIENT_FILE_MONITOR_ERROR. The `offset' is the
2385 * currently transmitted amount of total `filesize'. The `client_entry'
2386 * indicates the remote client, and the transmission session ID is the
2387 * `session_id'. The filename being transmitted is indicated by the
2391 typedef void (*SilcClientFileMonitor)(SilcClient client,
2392 SilcClientConnection conn,
2393 SilcClientMonitorStatus status,
2394 SilcClientFileError error,
2396 SilcUInt64 filesize,
2397 SilcClientEntry client_entry,
2398 SilcUInt32 session_id,
2399 const char *filepath,
2402 /****f* silcclient/SilcClientAPI/silc_client_file_send
2406 * SilcClientFileError
2407 * silc_client_file_send(SilcClient client,
2408 * SilcClientConnection conn,
2409 * SilcClientFileMonitor monitor,
2410 * void *monitor_context,
2411 * const char *local_ip,
2412 * SilcUInt32 local_port,
2414 * SilcClientEntry client_entry,
2415 * const char *filepath);
2416 * SilcUInt32 *session_id);
2420 * Sends a file indicated by the `filepath' to the remote client
2421 * indicated by the `client_entry'. This will negotiate a secret key
2422 * with the remote client before actually starting the transmission of
2423 * the file. The `monitor' callback will be called to monitor the
2424 * transmission of the file.
2426 * This returns a file session ID for the file transmission to the
2427 * `session_id' pointer. It can be used to close the session (and
2428 * abort the file transmission) by calling the silc_client_file_close
2429 * function. The session ID is also returned in the `monitor' callback.
2431 * If the `local_ip' is provided then this will try to bind the
2432 * listener for key exchange protocol to that IP. If `local_port' is
2433 * non-zero that port is used. If `local_ip' is NULL then this will
2434 * automatically attempt to bind it to local IP address of the machine.
2435 * If `do_not_bind' is TRUE then the `local_ip' and `local_port' are
2436 * ignored and it is expected that the receiver will provide the
2437 * point of contact. This is usefull if the sender is behind NAT.
2439 * If error will occur during the file transfer process the error
2440 * status will be returned in the monitor callback. In this case
2441 * the application must call silc_client_file_close to close the
2446 silc_client_file_send(SilcClient client,
2447 SilcClientConnection conn,
2448 SilcClientFileMonitor monitor,
2449 void *monitor_context,
2450 const char *local_ip,
2451 SilcUInt32 local_port,
2453 SilcClientEntry client_entry,
2454 const char *filepath,
2455 SilcUInt32 *session_id);
2457 /****f* silcclient/SilcClientAPI/silc_client_file_receive
2461 * SilcClientFileError
2462 * silc_client_file_receive(SilcClient client,
2463 * SilcClientConnection conn,
2464 * SilcClientFileMonitor monitor,
2465 * void *monitor_context,
2467 * SilcUInt32 session_id);
2471 * Receives a file from a client indicated by the `client_entry'. The
2472 * `session_id' indicates the file transmission session and it has been
2473 * received in the `ftp' client operation function. This will actually
2474 * perform the key agreement protocol with the remote client before
2475 * actually starting the file transmission. The `monitor' callback
2476 * will be called to monitor the transmission. If `path' is non NULL
2477 * the file will be saved into that directory. If NULL the file is
2478 * saved in the current working directory.
2480 * If error will occur during the file transfer process the error
2481 * status will be returned in the monitor callback. In this case
2482 * the application must call silc_client_file_close to close the
2487 silc_client_file_receive(SilcClient client,
2488 SilcClientConnection conn,
2489 SilcClientFileMonitor monitor,
2490 void *monitor_context,
2492 SilcUInt32 session_id);
2494 /****f* silcclient/SilcClientAPI/silc_client_file_close
2498 * SilcClientFileError silc_client_file_close(SilcClient client,
2499 * SilcClientConnection conn,
2500 * SilcUInt32 session_id);
2504 * Closes file transmission session indicated by the `session_id'.
2505 * If file transmission is being conducted it will be aborted
2506 * automatically. This function is also used to close the session
2507 * after successful file transmission. This function can be used
2508 * also to reject incoming file transmission request.
2511 SilcClientFileError silc_client_file_close(SilcClient client,
2512 SilcClientConnection conn,
2513 SilcUInt32 session_id);
2515 /****f* silcclient/SilcClientAPI/silc_client_attribute_add
2519 * SilcAttributePayload
2520 * silc_client_attribute_add(SilcClient client,
2521 * SilcClientConnection conn,
2522 * SilcAttribute attribute,
2524 * SilcUInt32 object_size);
2528 * Add new Requsted Attribute for WHOIS command to the client library.
2529 * The `attribute' object indicated by `object' is added and allocated
2530 * SilcAttributePayload is returned. The `object' must be of correct
2531 * type and of correct size. See the SilcAttribute for object types
2532 * for different attributes. You may also get all added attributes
2533 * from the client with silc_client_attributes_get function.
2535 * Requested Attributes are different personal information about the
2536 * user, status information and other information which other users
2537 * may query with WHOIS command. Application may set these so that
2538 * if someone sends WHOIS query these attributes will be replied back
2539 * to the sender. The library always puts the public key to the
2540 * Requested Attributes, but if application wishes to add additional
2541 * public keys (or certificates) it can be done with this interface.
2542 * Library also always computes digital signature of the attributes
2543 * automatically, so application does not need to do that.
2546 SilcAttributePayload silc_client_attribute_add(SilcClient client,
2547 SilcClientConnection conn,
2548 SilcAttribute attribute,
2550 SilcUInt32 object_size);
2552 /****f* silcclient/SilcClientAPI/silc_client_attribute_del
2556 * bool silc_client_attribute_del(SilcClient client,
2557 * SilcClientConnection conn,
2558 * SilcAttribute attribute,
2559 * SilcAttributePayload attr);
2563 * Delete a Requested Attribute from the client. If the `attribute'
2564 * is non-zero then all attributes of that type are deleted and the
2565 * `attr' is ignored. If `attr' is non-NULL then that specific
2566 * attribute is deleted and `attribute' is ignored.
2568 * You may get all added attributes with the function
2569 * silc_client_attributes_get and to get the SilcAttributePayload.
2570 * This function Returns TRUE if the attribute was found and deleted.
2573 bool silc_client_attribute_del(SilcClient client,
2574 SilcClientConnection conn,
2575 SilcAttribute attribute,
2576 SilcAttributePayload attr);
2578 /****f* silcclient/SilcClientAPI/silc_client_attributes_get
2582 * const SilcHashTable
2583 * silc_client_attributes_get(SilcClient client,
2584 * SilcClientConnection conn);
2588 * Returns pointer to the SilcHashTable which includes all the added
2589 * Requested Attributes. The caller must not free the hash table.
2590 * The caller may use SilcHashTableList and silc_hash_table_list to
2591 * traverse the table. Each entry in the hash table is one added
2592 * SilcAttributePayload. It is possible to delete a attribute
2593 * payload while traversing the table.
2596 const SilcHashTable silc_client_attributes_get(SilcClient client,
2597 SilcClientConnection conn);
2599 /****f* silcclient/SilcClientAPI/silc_client_attributes_request
2603 * SilcBuffer silc_client_attributes_request(SilcAttribute attribute, ...);
2607 * Constructs a Requested Attributes buffer. If the `attribute' is zero (0)
2608 * then all attributes are requested. Alternatively, `attribute' and
2609 * all variable arguments can each be requested attribute. In this case
2610 * the last must be set to zero (0) to complete the variable list of
2611 * requested attributes. See SilcAttribute for all attributes.
2612 * You can give the returned buffer as argument to for example
2613 * silc_client_get_client_by_id_resolve function.
2616 SilcBuffer silc_client_attributes_request(SilcAttribute attribute, ...);
2618 /* Low level packet sending functions */
2620 /****f* silcclient/SilcClientAPI/silc_client_send_packet
2624 * bool silc_client_send_packet(SilcClient client,
2625 * SilcClientConnection conn,
2626 * SilcPacketType type,
2627 * const unsigned char *data,
2628 * SilcUInt32 data_len);
2632 * This routine can be used by application to send packets directly
2633 * to a connection indicated by `conn'. Usually application does not
2634 * need this routine since the Client Library handles the packet
2635 * sending. The `type' indicates the packet type. If `data' is
2636 * NULL then empty packet is sent. This returns FALSE if packet cannot
2640 bool silc_client_send_packet(SilcClient client,
2641 SilcClientConnection conn,
2642 SilcPacketType type,
2643 const unsigned char *data,
2644 SilcUInt32 data_len);
2646 #include "command.h"
2647 #include "command_reply.h"
2649 #include "protocol.h"
2655 #endif /* SILCCLIENT_H */