Copyright © 2001 - 2002 SILC Project SILC Project Website | SILC Toolkit Reference Manual

SILC Toolkit Reference Manual SILC Core Library SILC Authentication Interface SILC Channel Interface SILC Command Interface SILC ID Interface SILC ID Cache Interface SILC Modes SILC Notify Interface SILC Argument Interface SILC Private Message Interface Packet Protocol Interface SILC Math Library SILC MP Interface SILC Math Interface SILC SFTP Library SILC SFTP Interface SFTP Filesystems Interface SILC Utility Library SILC Buffer Interface SILC Buffer Format Interface SILC Hash Table Interface SILC Logging Interface SILC Memory Interface SILC Mutex Interface SILC Thread Interface SILC Network Interface SILC Schedule Interface SILC Socket Interface SILC Protocol Interface SILC Config Interface SILC File Util Interface SILC Util Interface SILC List Interface SILC Dynamic List Interface SILC Zip API SILC Key Exchange Library SILC SKE Interface SKE Status Types SKE Diffie Hellman Groups SKE Payloads SILC Client Library Using SILC Client Library Client Library Interface SILC Crypto Library Introduction to SILC RNG SILC RNG Interface SILC Cipher API SILC Hash API SILC HMAC API SILC PKCS API Resource Links SILC Project Website SILC Protocol Documentation SILC White Paper SILC FAQ
Structure SilcClientOperations NAME
        typedef struct { ... } SilcClientOperations;
DESCRIPTION
        SILC Client Operations. These must be implemented by the application.
        The Client library may call any of these routines at any time.  The
        routines are used to deliver certain information to the application
        or from the application to the client library.
SOURCE
        typedef struct {
          /* Message sent to the application by library. `conn' associates the
             message to a specific connection.  `conn', however, may be NULL.
             The `type' indicates the type of the message sent by the library.
             The applicationi can for example filter the message according the
             type. */
          void (*say)(SilcClient client, SilcClientConnection conn,
                      SilcClientMessageType type, char *msg, ...);

          /* Message for a channel. The `sender' is the sender of the message
             The `channel' is the channel. The `msg' is the message.  Note that
             `msg' maybe NULL. */
          void (*channel_message)(SilcClient client, SilcClientConnection conn,
                                  SilcClientEntry sender, SilcChannelEntry channel,
                                  SilcMessageFlags flags, char *msg);

          /* Private message to the client. The `sender' is the sender of the
             message. */
          void (*private_message)(SilcClient client, SilcClientConnection conn,
                                  SilcClientEntry sender, SilcMessageFlags flags,
                                  char *msg);

          /* Notify message to the client. The notify arguments are sent in the
             same order as servers sends them. The arguments are same as received
             from the server except for ID's.  If ID is received application receives
             the corresponding entry to the ID. For example, if Client ID is received
             application receives SilcClientEntry.  Also, if the notify type is
             for channel the channel entry is sent to application (even if server
             does not send it because client library gets the channel entry from
             the Channel ID in the packet's header). */
          void (*notify)(SilcClient client, SilcClientConnection conn,
                         SilcNotifyType type, ...);

          /* Command handler. This function is called always in the command function.
             If error occurs it will be called as well. `conn' is the associated
             client connection. `cmd_context' is the command context that was
             originally sent to the command. `success' is FALSE if error occurred
             during command. `command' is the command being processed. It must be
             noted that this is not reply from server. This is merely called just
             after application has called the command. Just to tell application
             that the command really was processed. */
          void (*command)(SilcClient client, SilcClientConnection conn,
                          SilcClientCommandContext cmd_context, int success,
                          SilcCommand command);

          /* Command reply handler. This function is called always in the command reply
             function. If error occurs it will be called as well. Normal scenario
             is that it will be called after the received command data has been parsed
             and processed. The function is used to pass the received command data to
             the application.

             `conn' is the associated client connection. `cmd_payload' is the command
             payload data received from server and it can be ignored. It is provided
             if the application would like to re-parse the received command data,
             however, it must be noted that the data is parsed already by the library
             thus the payload can be ignored. `success' is FALSE if error occurred.
             In this case arguments are not sent to the application. The `status' is
             the command reply status server returned. The `command' is the command
             reply being processed. The function has variable argument list and each
             command defines the number and type of arguments it passes to the
             application (on error they are not sent). */
          void (*command_reply)(SilcClient client, SilcClientConnection conn,
                                SilcCommandPayload cmd_payload, int success,
                                SilcCommand command, SilcCommandStatus status, ...);

          /* Called to indicate that connection was either successfully established
             or connecting failed.  This is also the first time application receives
             the SilcClientConnection objecet which it should save somewhere.
             If the `success' is FALSE the application must always call the function
             silc_client_close_connection. */
          void (*connect)(SilcClient client, SilcClientConnection conn, int success);

          /* Called to indicate that connection was disconnected to the server. */
          void (*disconnect)(SilcClient client, SilcClientConnection conn);

          /* Find authentication method and authentication data by hostname and
             port. The hostname may be IP address as well. When the authentication
             method has been resolved the `completion' callback with the found
             authentication method and authentication data is called. The `conn'
             may be NULL. */
          void (*get_auth_method)(SilcClient client, SilcClientConnection conn,
                                  char *hostname, SilcUInt16 port,
                                  SilcGetAuthMeth completion, void *context);

          /* Verifies received public key. The `conn_type' indicates which entity
             (server, client etc.) has sent the public key. If user decides to trust
             the key may be saved as trusted public key for later use. The
             `completion' must be called after the public key has been verified. */
          void (*verify_public_key)(SilcClient client, SilcClientConnection conn,
                                    SilcSocketType conn_type, unsigned char *pk,
                                    SilcUInt32 pk_len, SilcSKEPKType pk_type,
                                    SilcVerifyPublicKey completion, void *context);

          /* Ask (interact, that is) a passphrase from user. The passphrase is
             returned to the library by calling the `completion' callback with
             the `context'. */
          void (*ask_passphrase)(SilcClient client, SilcClientConnection conn,
                                 SilcAskPassphrase completion, void *context);

          /* Notifies application that failure packet was received.  This is called
             if there is some protocol active in the client.  The `protocol' is the
             protocol context.  The `failure' is opaque pointer to the failure
             indication.  Note, that the `failure' is protocol dependant and
             application must explicitly cast it to correct type.  Usually `failure'
             is 32 bit failure type (see protocol specs for all protocol failure
             types). */
          void (*failure)(SilcClient client, SilcClientConnection conn,
                          SilcProtocol protocol, void *failure);

          /* Asks whether the user would like to perform the key agreement protocol.
             This is called after we have received an key agreement packet or an
             reply to our key agreement packet. This returns TRUE if the user wants
             the library to perform the key agreement protocol and FALSE if it is not
             desired (application may start it later by calling the function
             silc_client_perform_key_agreement). If TRUE is returned also the
             `completion' and `context' arguments must be set by the application. */
          int (*key_agreement)(SilcClient client, SilcClientConnection conn,
                               SilcClientEntry client_entry, const char *hostname,
                               SilcUInt16 port, SilcKeyAgreementCallback *completion,
                               void **context);

          /* Notifies application that file transfer protocol session is being
             requested by the remote client indicated by the `client_entry' from
             the `hostname' and `port'. The `session_id' is the file transfer
             session and it can be used to either accept or reject the file
             transfer request, by calling the silc_client_file_receive or
             silc_client_file_close, respectively. */
          void (*ftp)(SilcClient client, SilcClientConnection conn,
                      SilcClientEntry client_entry, SilcUInt32 session_id,
                      const char *hostname, SilcUInt16 port);
        } SilcClientOperations;
SilcClientAPI SilcKeyAgreementStatus SilcKeyAgreementCallback SilcPrivateMessageKeys SilcAskPassphrase SilcVerifyPublicKey SilcGetAuthMeth SilcClientMessageType SilcClientOperations SilcNicknameFormatParse SilcClientParams silc_client_alloc silc_client_free silc_client_init silc_client_run silc_client_run_one silc_client_stop silc_client_connect_to_server silc_client_add_connection silc_client_del_connection silc_client_add_socket silc_client_del_socket silc_client_start_key_exchange silc_client_close_connection silc_client_send_channel_message silc_client_send_private_message SilcGetClientCallback silc_client_get_clients silc_client_get_clients_local silc_client_get_clients_by_list silc_client_get_client_by_id silc_client_get_client_by_id_resolve silc_client_del_client SilcGetChannelCallback silc_client_get_channel silc_client_get_channel_id_resolve silc_client_get_channel_by_id_resolve silc_client_del_channel silc_client_get_server silc_client_get_server_by_id silc_client_del_server silc_client_on_channel silc_client_command_alloc silc_client_command_free silc_client_command_dup silc_client_command_find silc_client_command_call silc_client_command_send silc_client_command_pending silc_client_add_private_message_key silc_client_add_private_message_key_ske silc_client_send_private_message_key silc_client_del_private_message_key silc_client_list_private_message_keys silc_client_free_private_message_keys silc_client_add_channel_private_key silc_client_del_channel_private_keys silc_client_del_channel_private_key silc_client_list_channel_private_keys silc_client_free_channel_private_keys silc_client_send_key_agreement silc_client_perform_key_agreement silc_client_perform_key_agreement_fd silc_client_abort_key_agreement silc_client_set_away_message SilcConnectionAuthRequest silc_client_request_authentication_method SilcClientMonitorStatus SilcClientFileError SilcClientFileMonitor silc_client_file_send silc_client_file_receive silc_client_file_close

Copyright © 2001 - 2002 SILC Project SILC Project Website | SILC Toolkit Reference Manual