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SILC Toolkit Reference Manual SILC Core Library SILC Authentication Interface SILC Message Interface SILC Channel Interface SILC Command Interface SILC Notify Interface SILC Status Types SILC Modes SILC ID Interface SILC Argument Interface SILC Attributes Interface Packet Protocol Interface SILC Public Key Payload Interface SILC Utility Library Basic Types and Definitions Data Buffer Interface Data Buffer Format Interface Hash Table Interface Memory Allocation Interface Data Stack (memory pool) Interface Finite State Machine Interface Thread Interface Mutual Exclusion Lock Interface Condition Variable Interface Atomic Operations Interface Network (TCP and UDP) Interface Scheduler Interface Asynchronous Operation Interface Abstract Stream Interface Socket Stream Interface File Descriptor Stream Interface File Utility Functions String Utility Interface Snprintf Interface UTF-8 String Interface Stringprep Interface Utility Functions List Interface Dynamic List Interface MIME Interface Time Utility Functions Logging Interface Config File Interface SILC Key Repository Library SILC SKR Interface SILC ASN.1 Library SILC ASN.1 Interface SILC BER interface SILC Client Library Using SILC Client Library Tutorial Arguments for command_reply Client Operation SilcStatus Error Arguments in command_reply Client Operation Arguments for notify Client Operation Unicode and UTF-8 Strings in Client Library Client Library Interface Reference Client Entry Interface Reference SILC Key Exchange Library SILC SKE Interface SILC Connection Authentication Interface SILC VCard Library SILC VCard Interface SILC SFTP Library SILC SFTP Interface SFTP Filesystems Interface SILC HTTP Library SILC HTTP Server Interface SILC HTTP PHP Translator SILC Crypto Library Introduction to SILC RNG SILC RNG Interface SILC Cipher API SILC PKCS API SILC Public Key API SILC PKCS #1 API SILC Hash Interface SILC HMAC Interface SILC Application Utility Library SILC Application Utilities SILC ID Cache Interface SILC Math Library SILC MP Interface SILC Math Interface Resource Links SILC Project Website SILC Protocol Documentation SILC White Paper SILC FAQs
SilcNotifyType Arguments The SILC Client Library 'notify' client operation (which is part of the SilcClientOperation callback functions) returns different kind of notifications from the SILC server to the SILC client. The 'notify' client operation implementation has a variable argument list to deliver SilcNotifyType type specific arguments to the application. This document describes these arguments for all notify types to help SILC client software developers to handle the incoming notifications. notify Client Library operation The 'notify' client operation callback function prototype is as follows: `void (*notify)(SilcClient client, SilcClientConnection conn, SilcNotifyType type, ...);` The first argument 'client' is the SILC Client Library context, the `conn' is the context for the connection to the remote server, and the `type' is the notify type enumeration sent by the server. Rest of the arguments are `type' specific and implementation should handle them by the SilcNotifyType for example in a `switch` statement. The notify types are defined in lib/silccore/silcnotify.h header file. A short example: `switch(type) { case SILC_NOTIFY_TYPE_NONE: ... break; case SILC_NOTIFY_TYPE_INVITE: ... break; case SILC_NOTIFY_TYPE_JOIN: ... break; ... }` Arguments The following table describes all notify types and arguments that the client library sends in the 'notify' client operation to the application. By default all arguments that the library sends to application are valid pointers. However, it is possible that some pointers may be NULL. If this is the case it is separately mentioned that the argument may be NULL. In this case application must ignore that argument. The SilcNotifyType arguments per notify type is as follows:
Name | Description | Variable Arguments
SILC_NOTIFY_TYPE_NONE | A message from server that usually does not include any critical information. Application may ignore this or display it for the user. The 'message' argument may be NULL. | char *message
SILC_NOTIFY_TYPE_INVITE | Sent to the client if the user is invited on a channel. The 'channel argument may be NULL but the `channel_name' is always provided. | SilcClientChannel channel, char *channel_name, SilcClientEntry inviter
SILC_NOTIFY_TYPE_JOIN | Sent when someone joins to a channel. This is also sent whenever you join a channel, in addition of receiving SILC_COMMAND_JOIN command reply. | SilcClientEntry joining_client, SilcChannelEntry channel
SILC_NOTIFY_TYPE_LEAVE | Sent when someone leaves (parts) the channel. | SilcClientEntry leaving_client, SilcChannelEntry channel
SILC_NOTIFY_TYPE_SIGNOFF | Sent when someone signoff the SILC network. The 'signoff_message' may be NULL. The 'leaving_client' SilcClientEntry may be incomplete and contain NULL pointers, application must check it's pointers before attempting to display for example nickname information. | SilcClientEntry signoff_client, char *signoff_message
SILC_NOTIFY_TYPE_TOPIC_SET | Sent when the topic of a channel is set/changed. The 'setter_id_type' is used to check what type of pointer the 'setter_entry' is. For SILC_ID_CLIENT SilcClientEntry, for SILC_ID_SERVER SilcServerEntry and for SILC_ID_CHANNEL SilcChannelEntry. | SilcIdType setter_id_type, void *setter_entry, char *topic, SilcChannelEntry channel
SILC_NOTIFY_TYPE_NICK_CHANGE | Sent when someone changes their nickname. The 'client_entry' is the client whose nickname is changed. The `old_nickname' is the old nickname and the `new_nickname' is the new nickname. It has been already updated into the `client_entry'. | SilcClientEntry client_entry, const char *old_nickname, const char *new_nickname
SILC_NOTIFY_TYPE_CMODE_CHANGE | Sent when channel's mode has changed. The 'changer_id_type' is used to check what type of pointer the 'changer_entry' is. For SILC_ID_CLIENT SilcClientEntry, for SILC_ID_SERVER SilcServerEntry and for SILC_ID_CHANNEL SilcChannelEntry. The 'mode' is the mode mask after the change. The `cipher_name' is the cipher set for the channel. The `hmac_name' is the HMAC set for the channel. The `passphrase' is the passphrase that was set for the channel. The `founder_key' is the founder's public key when it was set for the channel. The `channel_pubkeys' is a list of SilcArgumentDecodedList contexts each containing one channel public key. The library will free the list automatically. The arguments 'cipher_name', 'hmac_name', 'passphrase', 'founder_key' and 'channel_pubkeys' may be NULL. | SilcIdType changer_id_type, void *changer_entry, SilcUInt32 mode, char *cipher_name, char *hmac_name, char *passphrase, SilcPublicKey founder_key, SilcDList channel_pubkeys, SilcChannelEntry channel
SILC_NOTIFY_TYPE_CUMODE_CHANGE | Sent when a users mode on a channel has changed. The 'changer_id_type' is used to check what type of pointer the 'changer_entry' is. For SILC_ID_CLIENT SilcClientEntry, for SILC_ID_SERVER SilcServerEntry and for SILC_ID_CHANNEL SilcChannelEntry. The 'mode' is the mode mask after the change. The 'target_client' is the client whose mode was changed. | SilcIdType changer_id_type, void *changer_entry, SilcUInt32 mode, SilcClientEntry target_client, SilcChannelEntry channel
SILC_NOTIFY_TYPE_MOTD | Message of the Day from the server. | char *motd
SILC_NOTIFY_TYPE_CHANNEL_CHANGE | Sent when a channel's Channel ID changes. It is possible that channel's ID changes and this notify is sent by the server when this happens. Usually application does not need to handle this notify type and may safely ignore it when received. | SilcChannelEntry channel
SILC_NOTIFY_TYPE_SERVER_SIGNOFF | Sent when a server quits the network. The 'clients' is a list of SilcClientEntry pointers. Each client in the entry is one client signing off from the SILC network. The library will free the list. The `server' is the quitting server, and it is NULL if the server isn't cached in the client library. | SilcServerEntry server, SilcDList clients
SILC_NOTIFY_TYPE_KICKED | Sent when a client (possibly our client) is kicked from a channel. The 'kick_message' may be NULL. If our client was kicked then 'kicked' is our local SilcClientEntry pointer. | SilcClientEntry kicked, char *kick_message, SilcClientEntry kicker, SilcChannelEntry channel
SILC_NOTIFY_TYPE_KILLED | Sent when a client (possibly our client) is killed from the network. The 'kill_message' may be NULL. If our client was killed then 'killed' is our local SilcClientEntry pointer. The 'killer_type' is used to check what type of pointer the 'killer' is. For SILC_ID_CLIENT SilcClientEntry, for SILC_ID_SERVER SilcServerEntry and for SILC_ID_CHANNEL SilcChannelEntry. | SilcClientEntry killed, char *kill_message, SilcIdType killer_type, void *killer, SilcChannelEntry channel
SILC_NOTIFY_TYPE_ERROR | Sent when an error occurs while handling some operation (except command) from the client. Application usually cannot handle this notify type and may safely ignore it. | SilcStatus error
SILC_NOTIFY_TYPE_WATCH | Sent to notify some status change of a client we are wathing. The SILC_COMMAND_WATCH is used to manage clients we are wathing and this notify type is used to deliver information about that client. If the client just changed nickname the 'new_nickname' includes the new nickname. Otherwise this pointer is NULL. The 'user_mode' is the client's mode in the SILC network. The 'notification' contains the notify type that happened for the 'watched_client' (for example SILC_NOTIFY_TYPE_NICK_CHANGE if the client changed their nickname). If the `new_nickname' is NULL and `notification' is SILC_NOTIFY_TYPE_NONE the `watched_client' has just joined the network. | SilcClientEntry watched_client, char *new_nickname, SilcUInt32 user_mode, SilcNotifyType notification, SilcPublicKey public_key
SILC protocol defines some additional notify types but those notify types are not delivered to the application. Some of those notify types are only delivered between servers and routers and clients never receive them. Only the notify types listed above are delivered to application.

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