Description: SILC Secure Internet Live Conferencing
Keywords: SILC, secure, chat, protocol, cipher, encrypt, SKE

Copyright © 2001 - 2007 SILC Project SILC Project Website | SILC Toolkit Reference Manual Index

SILC Toolkit Reference Manual 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 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 Engine Interface SILC Public Key Payload Interface SILC Key Exchange Library SILC SKE Interface SILC Connection Authentication Interface SILC VCard Library SILC VCard Interface SILC Math Library SILC MP Interface SILC Math 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 ASN.1 Library SILC ASN.1 Interface SILC BER interface SILC HTTP Library SILC HTTP Server Interface SILC HTTP PHP Translator 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 Application Utility Library SILC Application Utilities SILC ID Cache Interface SILC SFTP Library SILC SFTP Interface SFTP Filesystems Interface Resource Links SILC Project Website SILC Protocol Documentation SILC White Paper SILC FAQs
SilcStatus Arguments The SilcStatus is used to indicate a status (usually error status) of command execution and command reply status. It is also used to deliver disconnection status when server disconnects client from the server. For application it is mainly important in case of `command_reply' client operation, where the SilcStatus indicates the error status of the command that was executed. If error occurred the arguments returned by the `command_reply' are then dependent of the SilcStatus type instead of the SilcCommand arguments. This documents describes how the application should interpret the SilcStatus type in the `command_reply' client operation to be able to handle all error conditions properly. Any status type can be returned for any SilcCommand. For this reason application should be able to handle any error with any command. Error Status In command_reply Client Operation When error occurs in execution of a command the `command_reply' client operation is called with error status. In this case the 'success' argument of the client operation is set to FALSE, to indicate that command execution failed, and the 'status' argument indicates the error. If the 'status' argument is SILC_STATUS_OK then error did not occur and the arguments are as described in SilcCommand arguments. Application should handle the error status arguments by the SilcStatus type for example in a `switch` statement. The SilcStatus values are defined in lib/silccore/silcstatus.h header file. A short example. `switch(status) { case SILC_STATUS_ERR_NO_SUCH_NICK: ... nick = va_arg(va, char *); ... break; case SILC_STATUS_ERR_NO_SUCH_CHANNEL: ... break; case SILC_STATUS_ERR_NO_SUCH_SERVER: ... break; ... default: break; }` Arguments The following table describes all status values and arguments that the client library sends in the 'command_reply' client operation to the application in case of error. All arguments listed below are usually valid when returned by the library. However applicationn must be able to handle that any of those arguments may be NULL. The 'command_reply' arguments in case of error are as follows:
Name | Description | Error Arguments
SILC_STATUS_OK | No error. | N/A
SILC_STATUS_ERR_NO_SUCH_NICK | Requested nickname does not exist. Argument is the unknown name. | const char *nickname
SILC_STATUS_ERR_NO_SUCH_CHANNEL | The requested channel does not exist. Argument is the unknown name. | const char *channel_name
SILC_STATUS_ERR_NO_SUCH_SERVER | The requested server does not exist. Argument is the unknown name. | const char *server_name
SILC_STATUS_ERR_NO_RECIPIENT | Command required recipient but none was provided. No arguments returned. | N/A
SILC_STATUS_ERR_UNKNOWN_COMMAND | Command sent to server is unknown or unsupported by the server. No arguments returned. | N/A
SILC_STATUS_ERR_WILDCARDS | Wildcards were provided by they were not permitted. No arguments returned. | N/A
SILC_STATUS_ERR_NO_CLIENT_ID | Client ID was expected as command parameter but was not found. No arguments returned. | N/A
SILC_STATUS_ERR_NO_CHANNEL_ID | Channel ID was expected as command parameter but was not found. No arguments returned. | N/A
SILC_STATUS_ERR_NO_SERVER_ID | Server ID was expected as command parameter but was not found. No arguments returned. | N/A
SILC_STATUS_ERR_BAD_CLIENT_ID | Client ID provided was malformed. Returns the malformed ID. | const SilcClientID *client_id
SILC_STATUS_ERR_BAD_CHANNEL_ID | Channel ID provided was malformed. Returns the malformed ID. | const SilcChannelID *channel_id
SILC_STATUS_ERR_BAD_SERVER_ID | Server ID provided was malformed. Returns the malformed ID. | const SilcServerID *server_id
SILC_STATUS_ERR_NO_SUCH_CLIENT_ID | Client ID provided does not exist. The unknown ID is returned. | const SilcClientID *client_id
SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID | Channel ID provided does not exist. The unknown ID is returned. | const SilcChannelID *channel_id
SILC_STATUS_ERR_NO_SUCH_SERVER_ID | Server ID provided does not exist. The unknown ID is returned. | const SilcServerID *server_id
SILC_STATUS_ERR_NOT_ON_CHANNEL | The command required for you to be on channel but you were not. The channel ID is returned. | const SilcChannelID *channel_id
SILC_STATUS_ERR_USER_NOT_ON_CHANNEL | The requested target client is not on requested channel. Returns the target client ID and channel ID. | const SilcClientID *client_id, const SilcChannelID *channel_id
SILC_STATUS_ERR_USER_ON_CHANNEL | User were invited on channel they already are on. Returns the target client ID and channel ID. | const SilcClientID *client_id, const SilcChannelID *channel_id
SILC_STATUS_ERR_NOT_REGISTERED | User executed command that requires the client to be registered on the server before it may be executed. No arguments returned. | N/A
SILC_STATUS_ERR_NOT_ENOUGH_PARAMS | Command required more parameters than provided. No arguments returned. | N/A
SILC_STATUS_ERR_TOO_MANY_PARAMS | Too many parameters provided for the command. No arguments returned. | N/A
SILC_STATUS_ERR_PERM_DENIED | Generic permission denied error status, to indicat disallowed access. No arguments returned. | N/A
SILC_STATUS_ERR_BAD_PASSWORD | Password provided for channel were not accepted. Returns the channel ID. | const SilcChannelID *channel_id
SILC_STATUS_ERR_CHANNEL_IS_FULL | The channel is full and client cannot join the channel. Returns the channel ID. | const SilcChannelID *channel_id
SILC_STATUS_ERR_NOT_INVITED | The channel is invite only channel and client has not been invited. Returns the channel ID. | const SilcChannelID *channel_id
SILC_STATUS_ERR_BANNED_FROM_CHANNEL | The client has been banned from the channel. Returns the channel ID. | const SilcChannelID *channel_id
SILC_STATUS_ERR_UNKNOWN_MODE | Mode provided by the client was unknown to or unsupported by the server. No arguments returned. | N/A
SILC_STATUS_ERR_NOT_YOU | User tried to change someone else's mode which is not allowed. No arguments returned. | N/A
SILC_STATUS_ERR_NO_CHANNEL_PRIV | Command may be executed only by channel operator. The next argument is the channel ID. | const SilcChannelID *channel_id
SILC_STATUS_ERR_NO_CHANNEL_FOPRIV | Command may be executed only by channel founder. The next argument is the channel ID. | const SilcChannelID *channel_id
SILC_STATUS_ERR_NO_SERVER_PRIV | Command may be executed only by server operator. No arguments returned. | N/A
SILC_STATUS_ERR_NO_ROUTER_PRIV | Command may be executed only by router (SILC) operator. No arguments returned. | N/A
SILC_STATUS_ERR_BAD_NICKNAME | Nickname requested contained illegal characters or was malformed. No arguments returned. | N/A
SILC_STATUS_ERR_BAD_CHANNEL | Channel name requested contained illegal characters or was malformed. No arguments returned. | N/A
SILC_STATUS_ERR_AUTH_FAILED | The authentication data (passphrase or digital signature) sent as argument was wrong and thus authentication failed. No arguments returned. | N/A
SILC_STATUS_ERR_UNKNOWN_ALGORITHM | The server does not support requested algorithm. Returns the unknown algorithm. | const char *alg_name
SILC_STATUS_ERR_RESOURCE_LIMIT | Server cannot or will not accept the action due to resource limitations. No arguments returned. | N/A
SILC_STATUS_ERR_NO_SUCH_SERVICE | Requestes service identifier is unknown. Returns the unknown service identifier. | const char *service_identifier
SILC_STATUS_ERR_TIMEDOUT | Operation (command execution) or service request timed out, and thus was not processed. This usually happens due to network failure between servers and routers in the network. No arguments returned. | N/A
SILC_STATUS_ERR_UNSUPPORTED_PUBLIC_KEY | The public key or certificate type is not supported in ths implementation. No arguments returned. | N/A
| SILC_STATUS_ERR_OPERATION_ALLOWED | A operation, for example a command, is not allowed or it's execution is not allowed. No arguments returned. | N/A
SILC protocol defines some additional status types but those status types are not returned in `command_reply' client operation. Only the status types listed above are delivered to application.

Copyright © 2001 - 2007 SILC Project SILC Project Website | SILC Toolkit Reference Manual Index