8 .ds RF FORMFEED[Page %]
17 Network Working Group P. Riikonen
19 draft-riikonen-silc-commands-00.txt 25 April 2001
20 Expires: 25 October 2001
26 <draft-riikonen-silc-commands-00.txt>
31 This document is an Internet-Draft and is in full conformance with
32 all provisions of Section 10 of RFC 2026. Internet-Drafts are
33 working documents of the Internet Engineering Task Force (IETF), its
34 areas, and its working groups. Note that other groups may also
35 distribute working documents as Internet-Drafts.
37 Internet-Drafts are draft documents valid for a maximum of six months
38 and may be updated, replaced, or obsoleted by other documents at any
39 time. It is inappropriate to use Internet-Drafts as reference
40 material or to cite them other than as "work in progress."
42 The list of current Internet-Drafts can be accessed at
43 http://www.ietf.org/ietf/1id-abstracts.txt
45 The list of Internet-Draft Shadow Directories can be accessed at
46 http://www.ietf.org/shadow.html
48 The distribution of this memo is unlimited.
54 This memo describes the commands used in the Secure Internet Live
55 Conferencing (SILC) protocol, specified in the Secure Internet Live
56 Conferencing, Protocol Specification Internet Draft [SILC1]. The
57 SILC Commands are very important part of the SILC protocol. Usually
58 the commands are used by SILC clients to manage the SILC session, but
59 also SILC servers may use the commands. This memo specifies detailed
60 command messages and command reply messages.
73 1 Introduction .................................................. 2
74 1.1 Requirements Terminology .................................. 2
75 2 SILC Commands ................................................. 2
76 2.1 SILC Commands Syntax ...................................... 2
77 2.2 SILC Commands List ........................................ 4
78 2.3 SILC Command Status Types ................................. 32
79 2.3.1 SILC Command Status Payload ......................... 32
80 2.3.2 SILC Command Status List ............................ 32
81 3 Security Considerations ....................................... 37
82 4 References .................................................... 37
83 5 Author's Address .............................................. 39
89 This document describes the commands used in the Secure Internet Live
90 Conferencing (SILC) protocol, specified in the Secure Internet Live
91 Conferencing, Protocol Specification Internet Draft [SILC1]. This
92 document specifies detailed command messages and command reply messages.
94 Commands are very important part on SILC network especially for client
95 which uses commands to operate on the SILC network. Commands are used
96 to set nickname, join to channel, change modes and many other things.
98 See the [SILC1] for the requirements and the restrictions for the usage
99 of the SILC commands. The [SILC2] defines the command packet type and
100 the Command Payload which is actually used to deliver the commands and
101 command reply messages.
105 1.1 Requirements Terminology
107 The keywords MUST, MUST NOT, REQUIRED, SHOULD, SHOULD NOT, RECOMMENDED,
108 MAY, and OPTIONAL, when they appear in this document, are to be
109 interpreted as described in [RFC2119].
116 2.1 SILC Commands Syntax
118 This section briefly describes the syntax of the command notions
119 in this document. Every field in command is separated from each
120 other by whitespaces (` ') indicating that each field is independent
121 argument and each argument MUST have own Command Argument Payload.
122 The number of maximum arguments are defined with each command
123 separately. The Command Argument Payload is described in [SILC2].
125 Every command defines specific number for each argument. Currently,
126 they are defined in ascending order; first argument has number one
127 (1), second has number two (2) and so on. This number is set into the
128 Argument Type field in the Command Argument Payload. This makes it
129 possible to send the arguments in free order as the number MUST be
130 used to identify the type of the argument. This makes is it also
131 possible to have multiple optional arguments in commands and in
132 command replies. The number of argument is marked in parentheses
133 before the actual argument.
138 Example: Arguments: (1) <nickname> (2) <username@host>
142 Every command replies with Status Payload. This payload tells the
143 sender of the command whether the command was completed successfully or
144 whether there was an error. If error occurred the payload includes the
145 error type. In the next section the Status Payload is not described
146 as it is common to all commands and has been described here. Commands
147 MAY reply with other arguments as well. These arguments are command
148 specific and are described in the next section.
157 Arguments: (1) <nickname>[@<server>] (2) <message>
160 The command has maximum of 3 arguments. However, only first
161 and second arguments are mandatory.
163 First argument <nickname> is mandatory but may have optional
164 <nickname@server> format as well. Second argument is mandatory
165 <message> argument. Third argument is optional <count> argument.
167 The numbers in parentheses are the argument specific numbers
168 that specify the type of the argument in Command Argument Payload.
169 The receiver always knows that, say, argument number two (2) is
170 <message> argument, regardless of the ordering of the arguments in
173 Reply messages to the command:
176 Arguments: (1) <Status Payload> (2) [<channel list>]
177 (3) <idle time> (4) [<away message>]
179 This command may reply with maximum of 4 arguments. However,
180 only the first and third arguments are mandatory. The numbers
181 in the parentheses have the same meaning as in the upper
182 command sending specification.
184 Every command reply with <Status Payload>, it is mandatory
185 argument for all command replies and for this reason it is not
186 described in the command reply descriptions.
193 SILC_STATUS_ERR_TOO_MANY_TARGETS
194 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
195 SILC_STATUS_ERR_NO_SUCH_NICK
197 Every command reply also defines set of status message that it
198 may return inside the <Status Payload>. All status messages
199 are defined in the section 2.3 SILC Command Status Types.
202 Every command that has some kind of ID as argument (for example
203 <Client ID>) are actually ID Payloads, defined in [SILC2] that includes
204 the type of the ID, length of the ID and the actual ID data. This
205 way variable length ID's can be sent as arguments.
209 2.2 SILC Commands List
211 This section lists all SILC commands, however, it is expected that a
212 implementation and especially client implementation has many more
213 commands that has only local affect. These commands are official
214 SILC commands that has both client and server sides and cannot be
215 characterized as local commands.
217 List of all defined commands in SILC follows.
222 None. This is reserved command and MUST NOT be sent.
228 Arguments: (1) [<nickname>[@<server>]] (2) [<count>]
229 (3) [<Client ID>] (n) [...]
231 Whois command is used to query various information about specific
232 user. The user may be requested by their nickname and server name.
233 The query may find multiple matching users as there are no unique
234 nicknames in the SILC. The <count> option may be given to narrow
235 down the number of accepted results. If this is not defined there
236 are no limit of accepted results. The query may also be narrowed
237 down by defining the server name of the nickname.
239 It is also possible to search the user by Client ID. If the
240 <Client ID> is provided server MUST use it as the search value
241 instead of the <nickname>. One of the arguments MUST be given.
242 It is also possible to define multiple Client ID's to search
243 multiple users sending only one WHOIS command. In this case the
244 Client ID's are appended as normal arguments. The server replies
245 in this case with only one reply message for all requested users.
247 To prevent miss-use of this command wildcards in the nickname
248 or in the server name are not permitted. It is not allowed
249 to request all users on some server. The WHOIS requests MUST
250 be based on specific nickname request.
252 The WHOIS request MUST be always sent to the router by server
253 so that all users are searched. However, the server still MUST
254 search its locally connected clients. The router MUST send
255 this command to the server which owns the requested client. That
256 server MUST reply to the command. Server MUST NOT send whois
257 replies to the client until it has received the reply from its
260 Reply messages to the command:
263 Arguments: (1) <Status Payload> (2) <Client ID>
264 (3) <nickname>[@<server>] (4) <username@host>
265 (5) <real name> (6) [<Channel Payload
267 (7) [<user mode>] (8) [<idle time>]
270 This command may reply with several command reply messages to
271 form a list of results. In this case the status payload will
272 include STATUS_LIST_START status in the first reply and
273 STATUS_LIST_END in the last reply to indicate the end of the
274 list. If there are only one reply the status is set to normal
277 The command replies include the Client ID of the nickname,
278 nickname and server name, user name and host name and user's real
279 name. Client SHOULD process these replies only after the last
280 reply has been received with the STATUS_LIST_END status. If the
281 <count> option were defined in the query there will be only
282 <count> many replies from the server.
284 The server MAY return the list of channel the client has joined.
285 In this case the list is list of Channel Payloads. The Mode Mask
286 in the Channel Payload (see [SILC2] and section 2.3.2.3 for the
287 Channel Payload) is the client's mode on the channel. The list
288 is encoded by adding the Channel Payloads one after the other.
293 SILC_STATUS_LIST_START
295 SILC_STATUS_ERR_NO_SUCH_NICK
296 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID
297 SILC_STATUS_ERR_WILDCARDS
298 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
299 SILC_STATUS_ERR_TOO_MANY_PARAMS
302 2 SILC_COMMAND_WHOWAS
305 Arguments: (1) <nickname>[@<server>] (2) [<count>]
307 Whowas. This command is used to query history information about
308 specific user. The user may be requested by their nickname and
309 server name. The query may find multiple matching users as there
310 are no unique nicknames in the SILC. The <count> option may be
311 given to narrow down the number of accepted results. If this
312 is not defined there are no limit of accepted results. The query
313 may also be narrowed down by defining the server name of the
316 To prevent miss-use of this command wildcards in the nickname
317 or in the server name are not permitted. The WHOWAS requests MUST
318 be based on specific nickname request.
320 The WHOWAS request MUST be always sent to the router by server
321 so that all users are searched. However, the server still must
322 search its locally connected clients.
324 Reply messages to the command:
327 Arguments: (1) <Status Payload> (2) <Client ID>
328 (3) <nickname>[@<server>] (4) <username@host>
331 This command may reply with several command reply messages to form
332 a list of results. In this case the status payload will include
333 STATUS_LIST_START status in the first reply and STATUS_LIST_END in
334 the last reply to indicate the end of the list. If there are only
335 one reply the status is set to normal STATUS_OK.
337 The command replies with nickname and user name and host name.
338 Every server MUST keep history for some period of time of its
339 locally connected clients.
344 SILC_STATUS_LIST_START
346 SILC_STATUS_ERR_NO_SUCH_NICK
347 SILC_STATUS_ERR_WILDCARDS
348 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
349 SILC_STATUS_ERR_TOO_MANY_PARAMS
352 3 SILC_COMMAND_IDENTIFY
355 Arguments: (1) [<nickname>[@<server>]] (2) [<count>]
356 (3) [<Client ID>] (n) [...]
358 Identify. Identify command is almost analogous to WHOIS command,
359 except that it does not return as much information. Only relevant
360 information such as Client ID is returned. This is usually used
361 to get the Client ID of a client used in the communication with
364 The query may find multiple matching users as there are no unique
365 nicknames in the SILC. The <count> option may be given to narrow
366 down the number of accepted results. If this is not defined there
367 are no limit of accepted results. The query may also be narrowed
368 down by defining the server name of the nickname.
370 It is also possible to search the user by Client ID. If the
371 <Client ID> is provided server must use it as the search value
372 instead of the <nickname>. One of the arguments must be given.
373 It is also possible to define multiple Client ID's to search
374 multiple users sending only one IDENTIFY command. In this case
375 the Client ID's are appended as normal arguments. The server
376 replies in this case with only one reply message for all requested
379 To prevent miss-use of this command wildcards in the nickname
380 or in the server name are not permitted. It is not allowed
381 to request all users on some server. The IDENTIFY requests MUST
382 be based on specific nickname request.
384 Implementations may not want to give interface access to this
385 command as it is hardly a command that would be used by an end user.
386 However, it must be implemented as it is used with private message
389 The IDENTIFY MUST be always sent to the router by server so that
390 all users are searched. However, server MUST still search its
391 locally connected clients.
393 Reply messages to the command:
396 Arguments: (1) <Status Payload> (2) <Client ID>
397 (3) [<nickname>[@<server>]] (4) [<username@host>]
399 This command may reply with several command reply messages to form
400 a list of results. In this case the status payload will include
401 STATUS_LIST_START status in the first reply and STATUS_LIST_END in
402 the last reply to indicate the end of the list. If there are only
403 one reply the status is set to normal STATUS_OK.
405 The command replies with Client ID of the nickname and if more
406 information is available it MAY reply with nickname and user name
407 and host name. If the <count> option were defined in the query
408 there will be only <count> many replies from the server.
413 SILC_STATUS_LIST_START
415 SILC_STATUS_ERR_NO_SUCH_NICK
416 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID
417 SILC_STATUS_ERR_WILDCARDS
418 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
419 SILC_STATUS_ERR_TOO_MANY_PARAMS
425 Arguments: (1) <nickname>
427 Set/change nickname. This command is used to set nickname for
428 user. Nickname MUST NOT include any spaces (` '), non-printable
429 characters, commas (`,') and any wildcard characters. Note that
430 nicknames in SILC are case-sensitive which must be taken into
431 account when searching clients by nickname.
433 When nickname is changed new Client ID is generated. Server MUST
434 distribute SILC_NOTIFY_TYPE_NICK_CHANGE to local clients on the
435 channels (if any) the client is joined on. Then it MUST send
436 SILC_PACKET_REPLACE_ID to its primary route to replace the old
437 Client ID with the new one.
439 Reply messages to the command:
442 Arguments: (1) <Status Payload> (2) <New ID Payload>
444 This command is replied always with New ID Payload that is
445 generated by the server every time user changes their nickname.
446 Client receiving this payload MUST start using the received
447 Client ID as its current valid Client ID. The New ID Payload
448 is described in [SILC2].
453 SILC_STATUS_ERR_WILDCARDS
454 SILC_STATUS_ERR_NICKNAME_IN_USE
455 SILC_STATUS_ERR_BAD_NICKNAME
456 SILC_STATUS_ERR_NOT_REGISTERED
457 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
458 SILC_STATUS_ERR_TOO_MANY_PARAMS
464 Arguments: (1) [<Channel ID>]
466 The list command is used to list channels and their topics on the
467 current server. If the <Channel ID> parameter is used, only the
468 status of that channel is displayed. Secret channels are not
469 listed at all. Private channels are listed with status indicating
470 that the channel is private. Router MAY reply with all channels
473 Reply messages to the command:
476 Arguments: (1) <Status Payload> (2) <Channel ID>
477 (3) <channel> (4) [<topic>]
480 This command may reply with several command reply messages to form
481 a list of results. In this case the status payload will include
482 STATUS_LIST_START status in the first reply and STATUS_LIST_END in
483 the last reply to indicate the end of the list. If there are only
484 one reply the status is set to normal STATUS_OK.
486 This command replies with Channel ID, name and the topic of the
487 channel. If the channel is private channel the <topic> SHOULD
488 include the "*private*" string.
493 SILC_STATUS_LIST_START
495 SILC_STATUS_ERR_WILDCARDS
496 SILC_STATUS_ERR_NOT_REGISTERED
497 SILC_STATUS_ERR_TOO_MANY_PARAMS
498 SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID
499 SILC_STATUS_ERR_NO_CHANNEL_ID
500 SILC_STATUS_ERR_NO_SUCH_SERVER
506 Arguments: (1) <Channel ID> (2) [<topic>]
508 This command is used to change or view the topic of a channel.
509 The topic for channel <Channel ID> is returned if there is no
510 <topic> given. If the <topic> parameter is present, the topic
511 for that channel will be changed, if the channel modes permit
514 After setting the topic the server MUST send the notify type
515 SILC_NOTIFY_TYPE_TOPIC_SET to its primary router and then to
516 the channel which topic was changed.
518 Reply messages to the command:
521 Arguments: (1) <Status Payload> (2) <Channel ID>
524 The command may reply with the topic of the channel if it is
530 SILC_STATUS_ERR_NOT_ON_CHANNEL
531 SILC_STATUS_ERR_WILDCARDS
532 SILC_STATUS_ERR_NOT_REGISTERED
533 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
534 SILC_STATUS_ERR_NO_SUCH_CHANNEL
535 SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID
536 SILC_STATUS_ERR_NO_CHANNEL_ID
537 SILC_STATUS_ERR_BAD_CHANNEL_ID
538 SILC_STATUS_ERR_TOO_MANY_PARAMS
539 SILC_STATUS_ERR_NO_CHANNEL_PRIV
542 7 SILC_COMMAND_INVITE
545 Arguments: (1) <Channel ID> (2) [<Client ID>]
546 (3) [<adding client>] (4) [<removing client>]
548 This command is used to invite other clients to join to the
549 channel. The <Client ID> argument is the target client's ID that
550 is being invited. The <Channel ID> is the Channel ID of the
551 requested channel. The sender of this command MUST be on the
552 channel. The server MUST also send the notify type
553 SILC_NOTIFY_TYPE_INVITE to its primary router and then to the
554 client indicated by the <Client ID>.
556 The <adding client> and <removing client> can be used to add to
557 and remove from the invite list. The format of the <adding client>
558 and <removing client> is as follows:
560 [<nickname>[@<server>]!][<username>]@[<hostname>]
562 When adding to or removing from the invite list the server MUST
563 send the notify type SILC_NOTIFY_TYPE_INVITE to its primary router
564 and MUST NOT send it to the client which was added to the list.
565 The client which executes this command MUST have at least channel
566 operator privileges to be able to add to or remove from the invite
567 list. The wildcards MAY be used with this command. If adding or
568 removing more than one client then the lists are an comma (`,')
571 Note that the <Client ID> provided MUST be resolved into correct
572 nickname and host name and add to the invite list before sending
575 When this command is given with only <Channel ID> argument then
576 the command merely returns the invite list of the channel. This
577 command MUST fail if the requested channel does not exist, the
578 requested <Client ID> is already on the channel or if the channel
579 is invite only channel and the caller of this command does not
580 have at least channel operator privileges.
582 Reply messages to the command:
585 Arguments: (1) <Status Payload> (2) <Channel ID>
588 This command replies with the invite list of the channel if it
589 exists. The <invite list> may be omitted if the list was not
595 SILC_STATUS_ERR_NOT_REGISTERED
596 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
597 SILC_STATUS_ERR_TOO_MANY_PARAMS
598 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID
599 SILC_STATUS_ERR_NO_CLIENT_ID
600 SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID
601 SILC_STATUS_ERR_NO_CHANNEL_ID
602 SILC_STATUS_ERR_NOT_ON_CHANNEL
603 SILC_STATUS_ERR_USER_ON_CHANNEL
604 SILC_STATUS_ERR_NO_CHANNEL_PRIV
610 Arguments: (1) [<quit message>]
612 This command is used by client to end SILC session. The server
613 must close the connection to a client which sends this command.
614 if <quit message> is given it will be sent to other clients on
615 channel if the client is on channel when quitting.
617 Reply messages to the command:
619 This command does not reply anything.
625 Arguments: (1) <Client ID> (2) [<comment>]
627 This command is used by SILC operators to remove a client from
628 SILC network. The removing has temporary effects and client may
629 reconnect to SILC network. The <Client ID> is the client to be
630 removed from SILC. The <comment> argument may be provided to
631 give to the removed client some information why it was removed
634 When killing a client the router MUST first send notify type
635 SILC_NOTIFY_TYPE_KILLED to all channels the client has joined.
636 The packet MUST NOT be sent to the killed client on the channels.
637 Then, the router MUST send the same notify type to its primary
638 router. Finally, the router MUST send the same notify type
639 directly to the client which was killed.
641 Reply messages to the command:
644 Arguments: (1) <Status Payload>
646 This command replies only with Status Payload.
651 SILC_STATUS_ERR_WILDCARDS
652 SILC_STATUS_ERR_NOT_REGISTERED
653 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
654 SILC_STATUS_ERR_TOO_MANY_PARAMS
655 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID
656 SILC_STATUS_ERR_NO_CLIENT_ID
657 SILC_STATUS_ERR_NO_ROUTER_PRIV
663 Arguments: (1) [<server>] (2) [<Server ID>]
665 This command is used to fetch various information about a server.
666 If <server> argument is specified the command MUST be sent to
667 the requested server.
669 If the <Server ID> is specified the server information if fetched
670 by the provided Server ID.
672 Reply messages to the command:
675 Arguments: (1) <Status Payload> (2) <Server ID>
676 (3) <server name> (4) <string>
678 This command replies with the Server ID of the server and a
679 string which tells the information about the server.
684 SILC_STATUS_ERR_WILDCARDS
685 SILC_STATUS_ERR_NOT_REGISTERED
686 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
687 SILC_STATUS_ERR_TOO_MANY_PARAMS
688 SILC_STATUS_ERR_NO_SUCH_SERVER
689 SILC_STATUS_ERR_NO_SUCH_SERVER_ID
690 SILC_STATUS_ERR_NO_SERVER_ID
693 11 SILC_COMMAND_CONNECT
696 Arguments: (1) <remote server/router> (2) [<port>]
698 This command is used by operators to force a server to try to
699 establish a new connection to remote server or router. The
700 Operator MUST specify the server/router to be connected by
701 setting <remote server> argument. The port is 32 bit MSB value.
703 Reply messages to the command:
706 Arguments: (1) <Status Payload>
708 This command replies only with Status Payload.
715 SILC_STATUS_ERR_WILDCARDS
716 SILC_STATUS_ERR_NOT_REGISTERED
717 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
718 SILC_STATUS_ERR_TOO_MANY_PARAMS
719 SILC_STATUS_ERR_NO_SERVER_PRIV
720 SILC_STATUS_ERR_NO_ROUTER_PRIV
726 Arguments: (1) <Server ID>
728 This command is used by client and server to test the communication
729 channel to its server if one suspects that the communication is not
730 working correctly. The <Server ID> is the ID of the server the
731 sender is connected to.
733 Reply messages to the command:
736 Arguments: (1) <Status Payload>
738 This command replies only with Status Payload. Server returns
739 SILC_STATUS_OK in Status Payload if pinging was successful.
746 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
747 SILC_STATUS_ERR_TOO_MANY_PARAMS
748 SILC_STATUS_ERR_NO_SERVER_ID
749 SILC_STATUS_ERR_NO_SUCH_SERVER
750 SILC_STATUS_ERR_NOT_REGISTERED
756 Arguments: (1) <username> (2) <authentication payload>
758 This command is used by normal client to obtain server operator
759 privileges on some server or router. Note that router operator
760 has router privileges that supersedes the server operator
761 privileges and this does not obtain those privileges. Client
762 MUST use SILCOPER command to obtain router level privileges.
764 The <username> is the username set in the server configurations
765 as operator. The <authentication payload> is the data that the
766 client is authenticated against. It may be passphrase prompted
767 for user on client's screen or it may be public key or certificate
768 authentication data (data signed with private key).
770 After changing the mode the server MUST send the notify type
771 SILC_NOTIFY_TYPE_UMODE_CHANGE to its primary router.
773 Reply messages to the command:
776 Arguments: (1) <Status Payload>
778 This command replies only with Status Payload.
783 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
784 SILC_STATUS_ERR_TOO_MANY_PARAMS
785 SILC_STATUS_ERR_NOT_REGISTERED
786 SILC_STATUS_ERR_AUTH_FAILED
792 Arguments: (1) <channel> (2) <Client ID>
793 (3) [<passphrase>] (4) [<cipher>]
796 Join to channel/create new channel. This command is used to
797 join to a channel. If the channel does not exist the channel is
798 created. If server is normal server this command MUST be sent
799 to router which will create the channel. The channel MAY be
800 protected with passphrase. If this is the case the passphrase
801 MUST be sent along the join command.
803 The name of the <channel> MUST NOT include any spaces (` '),
804 non-printable characters, commas (`,') or any wildcard characters.
806 The second argument <Client ID> is the Client ID of the client
807 which is joining to the client. When client sends this command
808 to the server the <Client ID> MUST be the client's own ID.
810 Cipher to be used to secure the traffic on the channel MAY be
811 requested by sending the name of the requested <cipher>. This
812 is used only if the channel does not exist and is created. If
813 the channel already exists the cipher set previously for the
814 channel will be used to secure the traffic. The computed MACs
815 of the channel message are produced by the default HMAC or by
816 the <hmac> provided for the command.
818 The server MUST check whether the user is allowed to join to
819 the requested channel. Various modes set to the channel affect
820 the ability of the user to join the channel. These conditions
823 o The user MUST be invited to the channel if the channel
824 is invite-only channel.
826 o The Client ID/nickname/username/host name MUST NOT match
829 o The correct passphrase MUST be provided if passphrase
830 is set to the channel.
832 o The user count limit, if set, MUST NOT be reached.
834 Reply messages to the command:
837 Arguments: (1) <Status Payload> (2) <channel>
838 (3) <Channel ID> (4) <Client ID>
839 (5) <channel mode mask> (6) <created>
840 (7) [<Channel Key Payload>] (8) [<ban list>]
841 (9) [<invite list>] (10) [<topic>]
842 (11) [<hmac>] (12) <list count>
843 (13) <Client ID list> (14) <client mode list>
845 This command replies with the channel name requested by the
846 client, channel ID of the channel and topic of the channel
847 if it exists. The <Client ID> is the Client ID which was joined
848 to the channel. It also replies with the channel mode mask
849 which tells all the modes set on the channel. If the
850 channel is created the mode mask is zero (0). If ban mask
851 and/or invite list is set they are sent as well.
853 The <list count>, <Client ID list> and <client mode list> are
854 the clients currently on the channel and their modes on the
855 channel. The <Client ID list> is formed by adding the ID Payloads
856 one after the other. The <client mode list> is formed by adding
857 32 bit MSB first order values one after the other.
859 Client receives the channel key in the reply message as well
860 inside <Channel Key Payload>.
865 SILC_STATUS_ERR_WILDCARDS
866 SILC_STATUS_ERR_NOT_REGISTERED
867 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
868 SILC_STATUS_ERR_TOO_MANY_PARAMS
869 SILC_STATUS_ERR_BAD_PASSWORD
870 SILC_STATUS_ERR_CHANNEL_IS_FULL
871 SILC_STATUS_ERR_NOT_INVITED
872 SILC_STATUS_ERR_BANNED_FROM_CHANNEL
873 SILC_STATUS_ERR_BAD_CHANNEL
874 SILC_STATUS_ERR_USER_ON_CHANNEL
880 Arguments: (1) <server>
882 This command is used to query the Message of the Day of the server.
884 Reply messages to the command:
887 Arguments: (1) <Status Payload> (2) <Server ID>
890 This command replies with the motd message if it exists.
895 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
896 SILC_STATUS_ERR_TOO_MANY_PARAMS
897 SILC_STATUS_ERR_NOT_REGISTERED
898 SILC_STATUS_ERR_NO_SUCH_SERVER
901 16 SILC_COMMAND_UMODE
904 Arguments: (1) <Client ID> (2) <client mode mask>
906 This command is used by client to set/unset modes for itself.
907 However, there are some modes that the client MUST NOT set itself,
908 but they will be set by server. However, client MAY unset any
909 mode. Modes may be masked together ORing them thus having
910 several modes set. Client MUST keep its client mode mask
911 locally so that the mode setting/unsetting would work without
912 problems. Client may change only its own modes.
914 After changing the mode server MUST send the notify type
915 SILC_NOTIFY_TYPE_UMODE_CHANGE to its primary router.
917 The following client modes are defined:
919 0x0000 SILC_UMODE_NONE
921 No specific mode for client. This is the initial
922 setting when new client is created. The client is
926 0x0001 SILC_UMODE_SERVER_OPERATOR
928 Marks the user as server operator. Client MUST NOT
929 set this mode itself. Server sets this mode to the
930 client when client attains the server operator
931 privileges by SILC_COMMAND_OPER command. Client
932 MAY unset the mode itself.
935 0x0002 SILC_UMODE_ROUTER_OPERATOR
937 Marks the user as router (SILC) operator. Client
938 MUST NOT this mode itself. Router sets this mode to
939 the client when client attains the router operator
940 privileges by SILC_COMMAND_SILCOPER command. Client
941 MAY unset the mode itself.
944 0x0004 SILC_UMODE_GONE
946 Marks that the user is not currently present in the
947 SILC Network. Client MAY set and unset this mode.
949 Reply messages to the command:
952 Arguments: (1) <Status Payload> (2) <client mode mask>
954 This command replies with the changed client mode mask that
955 the client MUST to keep locally.
961 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
962 SILC_STATUS_ERR_TOO_MANY_PARAMS
963 SILC_STATUS_ERR_NOT_REGISTERED
964 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID
965 SILC_STATUS_ERR_BAD_CLIENT_ID
966 SILC_STATUS_ERR_NOT_YOU
967 SILC_STATUS_ERR_PERM_DENIED
968 SILC_STATUS_ERR_UNKNOWN_MODE
969 SILC_STATUS_ERR_NO_CLIENT_ID
972 17 SILC_COMMAND_CMODE
975 Arguments: (1) <Channel ID> (2) <channel mode mask>
976 (3) [<user limit>] (4) [<passphrase>]
977 (5) [<cipher>] (6) [<hmac>]
980 This command is used by client to set or change channel flags on
981 a channel. Channel has several modes that set various properties
982 of a channel. Modes may be masked together by ORing them thus
983 having several modes set. The <Channel ID> is the ID of the
984 target channel. The client changing channel mode MUST be on
985 the same channel and poses sufficient privileges to be able to
988 When the mode is changed SILC_NOTIFY_TYPE_CMODE_CHANGE notify
989 type MUST be distributed to the channel.
991 The following channel modes are defined:
993 0x0000 SILC_CMODE_NONE
995 No specific mode on channel. This is the default when
996 channel is created. This means that channel is just plain
1000 0x0001 SILC_CMODE_PRIVATE
1002 Channel is private channel. Private channels are shown
1003 in the channel list listed with SILC_COMMAND_LIST command
1004 with indication that the channel is private. Also,
1005 client on private channel will no be detected to be on
1006 the channel as the channel is not shown in the client's
1007 currently joined channel list. Channel founder and
1008 channel operator MAY set/unset this mode.
1010 Typical implementation would use [+|-]p on user interface
1011 to set/unset this mode.
1014 0x0002 SILC_CMODE_SECRET
1016 Channel is secret channel. Secret channels are not shown
1017 in the list listed with SILC_COMMAND_LIST command. Secret
1018 channels can be considered to be invisible channels.
1019 Channel founder and channel operator MAY set/unset this
1022 Typical implementation would use [+|-]s on user interface
1023 to set/unset this mode.
1026 0x0004 SILC_CMODE_PRIVKEY
1028 Channel uses private channel key to protect the traffic
1029 on the channel. When this mode is set the client will be
1030 responsible to set the key it wants to use to encrypt and
1031 decrypt the traffic on channel. Server generated channel
1032 keys are not used at all. This mode provides additional
1033 security as clients on channel may agree to use private
1034 channel key that even servers do not know. Naturally,
1035 this requires that every client on the channel knows
1036 the key before hand (it is considered to be pre-shared-
1037 key). The key material is RECOMMENDED to be processed
1038 as stated in the [SILC3] in the section Processing the
1041 As it is local setting it is possible to have several
1042 private channel keys on one channel. In this case several
1043 clients can talk on same channel but only those clients
1044 that share the key with the message sender will be able
1045 to hear the talking. Client SHOULD NOT display those
1046 message for the end user that it is not able to decrypt
1047 when this mode is set.
1049 Only channel founder MAY set/unset this mode. If this
1050 mode is unset the server will distribute new channel
1051 key to all clients on the channel which will be used
1054 Typical implementation would use [+|-]k on user interface
1055 to set/unset this mode.
1058 0x0008 SILC_CMODE_INVITE
1060 Channel is invite only channel. Client may join to this
1061 channel only if it is invited to the channel. Channel
1062 founder and channel operator MAY set/unset this mode.
1064 Typical implementation would use [+|-]i on user interface
1065 to set/unset this mode.
1068 0x0010 SILC_CMODE_TOPIC
1070 The topic of the channel may only be set by client that
1071 is channel founder or channel operator. Normal clients
1072 on channel will not be able to set topic when this mode
1073 is set. Channel founder and channel operator MAY set/
1076 Typical implementation would use [+|-]t on user interface
1077 to set/unset this mode.
1080 0x0020 SILC_CMODE_ULIMIT
1082 User limit has been set to the channel. New clients
1083 may not join to the channel when the limit set is
1084 reached. Channel founder and channel operator MAY set/
1085 unset the limit. The <user limit> argument is the
1086 number of limited users.
1088 Typical implementation would use [+|-]l on user interface
1089 to set/unset this mode.
1092 0x0040 SILC_CMODE_PASSPHRASE
1094 Passphrase has been set to the channel. Client may
1095 join to the channel only if it is able to provide the
1096 correct passphrase. Setting passphrases to channel
1097 is entirely safe as all commands are protected in the
1098 SILC network. Only channel founder MAY set/unset
1099 the passphrase. The <passphrase> argument is the
1102 Typical implementation would use [+|-]a on user interface
1103 to set/unset this mode.
1106 0x0080 SILC_CMODE_CIPHER
1108 Sets specific cipher to be used to protect channel
1109 traffic. The <cipher> argument is the requested cipher.
1110 When set or unset the server must re-generate new
1111 channel key. Only channel founder MAY set the cipher of
1112 the channel. When unset the new key is generated using
1113 default cipher for the channel.
1115 Typical implementation would use [+|-]c on user interface
1116 to set/unset this mode.
1119 0x0100 SILC_CMODE_HMAC
1121 Sets specific hmac to be used to compute the MACs of the
1122 channel message. The <hmac> argument is the requested hmac.
1123 Only channel founder may set the hmac of the channel.
1125 Typical implementation would use [+|-]h on user interface
1126 to set/unset this mode.
1129 0x0200 SILC_CMODE_FOUNDER_AUTH
1131 Channel founder may set this mode to be able to regain
1132 channel founder rights even if the client leaves the
1133 channel. The <auth payload> is the Authentication Payload
1134 consisting of the authentication method and authentication
1135 data to be used in the authentication. The server MUST
1136 NOT accept NONE authentication method. Also, if the
1137 method is public key authentication the server MUST NOT
1138 save the authentication data from the payload as the
1139 data is different on all authentications. In this case the
1140 server only saves the authentication method.
1142 Note that this mode is effective only in the current server.
1143 The client MUST connect to the same server later to be able
1144 to regain the channel founder rights. The server MUST save
1145 the public key of the channel founder and use that to identify
1146 the client which is claiming the channel founder rights.
1147 The rights may be claimed by the SILC_CUMODE_FOUNDER
1148 channel user mode using SILC_COMMAND_CUMODE command. The
1149 set authentication data remains valid as long as the channel
1150 exists or until the founder unsets this mode.
1152 Typical implementation would use [+|-]f on user interface
1153 to set/unset this mode.
1155 To make the mode system work, client MUST keep the channel mode
1156 mask locally so that the mode setting and unsetting would work
1157 without problems. The client receives the initial channel mode
1158 mask when it joins to the channel. When the mode changes on
1159 channel the server MUST distribute the changed channel mode mask
1160 to all clients on the channel by sending the notify type
1161 SILC_NOTIFY_TYPE_CMODE_CHANGE. The notify type MUST also be sent
1162 to the server's primary router.
1164 Reply messages to the command:
1167 Arguments: (1) <Status Payload> (2) <Channel ID>
1168 (3) <channel mode mask>
1170 This command replies with the changed channel mode mask that
1171 client MUST keep locally.
1176 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
1177 SILC_STATUS_ERR_TOO_MANY_PARAMS
1178 SILC_STATUS_ERR_NOT_REGISTERED
1179 SILC_STATUS_ERR_NOT_ON_CHANNEL
1180 SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID
1181 SILC_STATUS_ERR_BAD_CHANNEL_ID
1182 SILC_STATUS_ERR_NO_CHANNEL_ID
1183 SILC_STATUS_ERR_NO_CHANNEL_PRIV
1184 SILC_STATUS_ERR_UNKNOWN_MODE
1185 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID
1188 18 SILC_COMMAND_CUMODE
1191 Arguments: (1) <Channel ID> (2) <mode mask>
1192 (3) <Client ID> (4) [<auth payload>]
1194 This command is used by client to change channel user modes on
1195 channel. Users on channel may have some special modes and this
1196 command is used by channel operators to set or change these modes.
1197 The <Channel ID> is the ID of the target channel. The <mode mask>
1198 is OR'ed mask of modes. The <Client ID> is the target client.
1199 The client changing channel user modes MUST be on the same channel
1200 as the target client and poses sufficient privileges to be able to
1203 When the mode is changed SILC_NOTIFY_TYPE_CUMODE_CHANGE notify
1204 type is distributed to the channel.
1206 The following channel modes are defined:
1208 0x0000 SILC_CUMODE_NONE
1210 No specific mode. This is the normal situation for client.
1211 Also, this is the mode set when removing all modes from
1215 0x0001 SILC_CUMODE_FOUNDER
1217 The client is channel founder of the channel. Usually this
1218 mode is set only by the server when the channel was created.
1219 However, if the SILC_CMODE_FOUNDER_AUTH channel mode has
1220 been set, the client can claim channel founder privileges
1221 by providing the <auth payload> that the server will use
1222 to authenticate the client. The client MAY remove this
1226 0x0002 SILC_CUMODE_OPERATOR
1228 Sets channel operator privileges on the channel for a
1229 client on the channel. Channel founder and channel operator
1230 MAY set/unset this mode.
1232 Reply messages to the command:
1235 Arguments: (1) <Status Payload> (2) <channel user mode mask>
1236 (3) <Channel ID> (4) <Client ID>
1238 This command replies with the changed channel user mode mask that
1239 client MUST keep locally. The <Channel ID> is the specified
1240 channel. The <Client ID> is the target client.
1245 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
1246 SILC_STATUS_ERR_TOO_MANY_PARAMS
1247 SILC_STATUS_ERR_NOT_REGISTERED
1248 SILC_STATUS_ERR_NOT_ON_CHANNEL
1249 SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID
1250 SILC_STATUS_ERR_BAD_CHANNEL_ID
1251 SILC_STATUS_ERR_NO_CHANNEL_ID
1252 SILC_STATUS_ERR_NO_CHANNEL_PRIV
1253 SILC_STATUS_ERR_UNKNOWN_MODE
1254 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID
1255 SILC_STATUS_ERR_AUTH_FAILED
1258 19 SILC_COMMAND_KICK
1261 Arguments: (1) <Channel ID> (2) <Client ID>
1264 This command is used by channel operators to remove a client from
1265 channel. The <channel> argument is the channel the client to be
1266 removed is on currently. Note that the "kicker" must be on the same
1267 channel. If <comment> is provided it will be sent to the removed
1270 After kicking the client the server MUST send the notify type
1271 SILC_NOTIFY_TYPE_KICKED to the channel and to its primary router.
1272 The channel key MUST also be re-generated after kicking, unless
1273 the SILC_CMODE_PRIVKEY mode is set.
1275 Reply messages to the command:
1278 Arguments: (1) <Status Payload>
1280 This command replies only with Status Payload.
1285 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
1286 SILC_STATUS_ERR_TOO_MANY_PARAMS
1287 SILC_STATUS_ERR_NOT_REGISTERED
1288 SILC_STATUS_ERR_NO_SUCH_CHANNEL
1289 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID
1290 SILC_STATUS_ERR_NO_CHANNEL_PRIV
1291 SILC_STATUS_ERR_NO_CLIENT_ID
1297 Arguments: (1) <Channel ID> (2) [<adding client>]
1298 (3) [<removing client>]
1300 This command is used to manage the ban list of the channel
1301 indicated by the <Channel ID>. A client that is banned from
1302 channel is no longer able to join the channel. The client which
1303 is executing this command MUST have at least channel operator
1304 privileges on the channel.
1306 The <adding client> and <removing client> are used to add to and
1307 remove from the ban list. The format of the <adding client> and
1308 the <removing client> is of following format:
1310 [<nickname>[@<server>]!][<username>]@[<hostname>]
1312 The server MUST send the notify type SILC_NOTIFY_TYPE_BAN to its
1313 primary router after adding to or removing from the ban list.
1314 The wildcards MAY be used with this command. If adding or removing
1315 from than one clients then the lists are an comma (`,') separated.
1317 If this command is executed without the ban arguments the command
1318 merely replies with the current ban list.
1321 Reply messages to the command:
1324 Arguments: (1) <Status Payload> (2) <Channel ID>
1327 This command replies with the <Channel ID> of the channel and
1328 the current <ban list> of the channel if it exists.
1333 SILC_STATUS_ERR_NOT_REGISTERED
1334 SILC_STATUS_ERR_TOO_MANY_PARAMS
1335 SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID
1336 SILC_STATUS_ERR_NO_CHANNEL_ID
1337 SILC_STATUS_ERR_NOT_ON_CHANNEL
1338 SILC_STATUS_ERR_NO_CHANNEL_PRIV
1341 21 SILC_COMMAND_CLOSE
1344 Arguments: (1) <remote server/router> (2) [<port>]
1346 This command is used only by operator to close connection to a
1349 Reply messages to the command:
1352 Arguments: (1) <Status Payload>
1354 This command replies only with Status Payload.
1359 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
1360 SILC_STATUS_ERR_TOO_MANY_PARAMS
1361 SILC_STATUS_ERR_NOT_REGISTERED
1362 SILC_STATUS_ERR_NO_SUCH_SERVER
1363 SILC_STATUS_ERR_NO_SERVER_PRIV
1364 SILC_STATUS_ERR_NO_SUCH_SERVER_ID
1367 22 SILC_COMMAND_SHUTDOWN
1372 This command is used only by operator to shutdown the server.
1373 All connections to the server will be closed and the server is
1376 Reply messages to the command:
1379 Arguments: (1) <Status Payload>
1381 This command replies only with Status Payload.
1386 SILC_STATUS_ERR_NOT_REGISTERED
1387 SILC_STATUS_ERR_NO_SERVER_PRIV
1390 23 SILC_COMMAND_SILCOPER
1393 Arguments: (1) <username> (2) <authentication payload>
1395 This command is used by normal client to obtain router operator
1396 privileges (also known as SILC operator) on the router. Note
1397 that router operator has privileges that supersedes the server
1398 operator privileges.
1400 The <username> is the username set in the server configurations
1401 as operator. The <authentication payload> is the data that the
1402 client is authenticated against. It may be passphrase prompted
1403 for user on client's screen or it may be public key or certificate
1404 authentication data (data signed with private key).
1406 Difference between router operator and server operator is that
1407 router operator is able to handle cell level properties while
1408 server operator (even on router server) is able to handle only
1409 local properties, such as, local connections and normal server
1410 administration. The router operator is also able to use the
1411 SILC_COMMAND_KILL command.
1413 After changing the mode server MUST send the notify type
1414 SILC_NOTIFY_TYPE_UMODE_CHANGE to its primary router.
1416 Reply messages to the command:
1419 Arguments: (1) <Status Payload>
1421 This command replies only with Status Payload.
1426 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
1427 SILC_STATUS_ERR_TOO_MANY_PARAMS
1428 SILC_STATUS_ERR_NOT_REGISTERED
1429 SILC_STATUS_ERR_AUTH_FAILED
1432 24 SILC_COMMAND_LEAVE
1435 Arguments: (1) <Channel ID>
1437 This command is used by client to leave a channel the client is
1440 When leaving channel the server MUST send the notify type
1441 SILC_NOTIFY_TYPE_LEAVE to its primary router and to the channel.
1442 The channel key MUST also be re-generated when leaving the channel
1443 and distribute it to all clients still currently on the channel.
1444 The key MUST NOT be re-generated if the SILC_CMODE_PRIVKEY mode
1447 Reply messages to the command:
1450 Arguments: (1) <Status Payload>
1452 This command replies only with Status Payload.
1457 SILC_STATUS_ERR_NOT_REGISTERED
1458 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
1459 SILC_STATUS_ERR_TOO_MANY_PARAMS
1460 SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID
1461 SILC_STATUS_ERR_BAD_CHANNEL_ID
1462 SILC_STATUS_ERR_NO_CHANNEL_ID
1465 25 SILC_COMMAND_USERS
1468 Arguments: (1) <Channel ID>
1470 This command is used to list user names currently on the requested
1471 channel; argument <Channel ID>. The server MUST resolve the
1472 user names and send a comma (`,') separated list of user names
1473 on the channel. Server or router MAY resolve the names by sending
1474 SILC_COMMAND_WHOIS or SILC_COMMAND_IDENTIFY commands.
1476 If the requested channel is a private or secret channel, this
1477 command MUST NOT send the list of users, as private and secret
1478 channels cannot be seen by outside. In this case the returned
1479 name list MAY include a indication that the server could not
1480 resolve the names of the users on the channel. Also, in this case
1481 Client ID's or client modes are not sent either.
1483 Reply messages to the command:
1486 Arguments: (1) <Status Payload> (2) <Channel ID>
1487 (3) <list count> (4) <Client ID list>
1488 (5) <client mode list>
1490 This command replies with the Channel ID of the requested channel
1491 Client ID list of the users on the channel and list of their modes.
1492 The Client ID list has Client ID's of all users in the list. The
1493 <Client ID list> is formed by adding Client ID's one after another.
1494 The <client mode list> is formed by adding client's user modes on
1495 the channel one after another (4 bytes (32 bits) each). The <list
1496 count> of length of 4 bytes (32 bits), tells the number of entries
1497 in the lists. Both lists MUST have equal number of entries.
1502 SILC_STATUS_ERR_NOT_REGISTERED
1503 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
1504 SILC_STATUS_ERR_TOO_MANY_PARAMS
1505 SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID
1506 SILC_STATUS_ERR_BAD_CHANNEL_ID
1507 SILC_STATUS_ERR_NO_CHANNEL_ID
1508 SILC_STATUS_ERR_NOT_ON_CHANNEL
1511 26 SILC_COMMAND_GETKEY
1514 Arguments: (1) <ID Payload>
1516 This command is used to fetch the public key of the client or
1517 server indicated by the <ID Payload>. The public key is fetched
1518 from the server where to the client is connected.
1520 Reply messages to the command:
1523 Arguments: (1) <Status Payload> (2) <ID Payload>
1524 (3) <Public Key Payload>
1526 This command replies with the client's or server's ID and with
1527 the <Public Key Payload>.
1532 SILC_STATUS_ERR_NOT_REGISTERED
1533 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
1534 SILC_STATUS_ERR_TOO_MANY_PARAMS
1535 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID
1536 SILC_STATUS_ERR_NO_SUCH_SERVER_ID
1541 Currently undefined commands.
1546 These commands are reserved for private use and will not be defined
1550 255 SILC_COMMAND_MAX
1552 Reserved command. This must not be sent.
1557 2.3 SILC Command Status Types
1560 2.3.1 SILC Command Status Payload
1562 Command Status Payload is sent in command reply messages to indicate
1563 the status of the command. The payload is one of argument in the
1564 command thus this is the data area in Command Argument Payload described
1565 in [SILC2]. The payload is only 2 bytes of length. The following diagram
1566 represents the Command Status Payload (field is always in MSB order).
1572 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
1573 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1575 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1579 Figure 6: SILC Command Status Payload
1583 o Status Message (2 bytes) - Indicates the status message.
1584 All Status messages are described in the next section.
1589 2.3.2 SILC Command Status List
1591 Command Status messages are returned in the command reply messages
1592 to indicate whether the command were executed without errors. If error
1593 has occurred the status indicates which error occurred. Status payload
1594 only sends numeric reply about the status. Receiver of the payload must
1595 convert the numeric values into human readable error messages. The
1596 list of status messages below has an example human readable error
1597 messages that client may display for the user.
1599 List of all defined command status messages following.
1602 Generic status messages:
1606 Ok status. Everything went Ok. The status payload maybe
1607 safely ignored in this case.
1609 1 SILC_STATUS_LIST_START
1611 Start of the list. There will be several command replies and
1612 this reply is the start of the list.
1614 2 SILC_STATUS_LIST_ITEM
1616 Item in the list. This is one of the item in the list but not the
1619 3 SILC_STATUS_LIST_END
1621 End of the list. There were several command replies and this
1622 reply is the last of the list. There won't be other replies
1623 belonging to this list after this one.
1627 Currently undefined and has been reserved for the future.
1630 Error status message:
1634 10 SILC_STATUS_ERR_NO_SUCH_NICK
1636 "No such nickname". Requested nickname does not exist.
1638 11 SILC_STATUS_ERR_NO_SUCH_CHANNEL
1640 "No such channel". Requested channel name does not exist.
1642 12 SILC_STATUS_ERR_NO_SUCH_SERVER
1644 "No such server". Requested server name does not exist.
1646 13 SILC_STATUS_ERR_TOO_MANY_TARGETS
1648 "Duplicate recipients. No message delivered". Message were
1649 tried to be sent to recipient which has several occurrences in
1652 14 SILC_STATUS_ERR_NO_RECIPIENT
1654 "No recipient given". Command required recipient which was
1657 15 SILC_STATUS_ERR_UNKNOWN_COMMAND
1659 "Unknown command". Command sent to server is unknown by the
1662 16 SILC_STATUS_ERR_WILDCARDS
1664 "Wildcards cannot be used". Wildcards were provided but they
1667 17 SILC_STATUS_ERR_NO_CLIENT_ID
1669 "No Client ID given". Client ID were expected as command
1670 parameter but were not found.
1672 18 SILC_STATUS_ERR_NO_CHANNEL_ID
1674 "No Channel ID given". Channel ID were expected as command
1675 parameter but were not found.
1677 19 SILC_STATUS_ERR_NO_SERVER_ID
1679 "No Serve ID given". Server ID were expected as command
1680 parameter but were not found.
1682 20 SILC_STATUS_ERR_BAD_CLIENT_ID
1684 "Bad Client ID". Client ID provided were erroneous.
1686 21 SILC_STATUS_ERR_BAD_CHANNEL_ID
1688 "Bad Channel ID". Channel ID provided were erroneous.
1690 22 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID
1692 "No such Client ID". Client ID provided does not exist.
1694 23 SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID
1696 "No such Channel ID". Channel ID provided does not exist.
1698 24 SILC_STATUS_ERR_NICKNAME_IN_USE
1700 "Nickname already exists". Nickname created could not be
1701 registered because number of same nicknames were already set to
1702 maximum. This is not expected to happen in real life but is
1705 25 SILC_STATUS_ERR_NOT_ON_CHANNEL
1707 "You are not on that channel". The command were specified for
1708 channel user is not currently on.
1710 26 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL
1712 "They are not on channel". The requested target client is not
1713 on requested channel.
1715 27 SILC_STATUS_ERR_USER_ON_CHANNEL
1717 "User already on channel". User were invited on channel they
1720 28 SILC_STATUS_ERR_NOT_REGISTERED
1722 "You have not registered". User executed command that requires
1723 the client to be registered on the server before it may be
1726 29 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS
1728 "Not enough parameters". Command requires more parameters
1731 30 SILC_STATUS_ERR_TOO_MANY_PARAMS
1733 "Too many parameters". Too many parameters were provided
1736 31 SILC_STATUS_ERR_PERM_DENIED
1738 "Permission denied". Generic permission denied error status
1739 to indicate disallowed access.
1741 32 SILC_STATUS_ERR_BANNED_FROM_SERVER
1743 "You are banned from this server". The client tried to register
1744 on server that has explicitly denied this host to connect.
1746 33 SILC_STATUS_ERR_BAD_PASSWORD
1748 "Cannot join channel. Incorrect password". Password provided for
1749 channel were not accepted.
1751 34 SILC_STATUS_ERR_CHANNEL_IS_FULL
1753 "Cannot join channel. Channel is full". The channel is full
1754 and client cannot be joined to it.
1756 35 SILC_STATUS_ERR_NOT_INVITED
1758 "Cannot join channel. You have not been invited". The channel
1759 is invite only channel and client has not been invited.
1761 36 SILC_STATUS_ERR_BANNED_FROM_CHANNEL
1763 "Cannot join channel. You have been banned". The client has
1764 been banned from the channel.
1766 37 SILC_STATUS_ERR_UNKNOWN_MODE
1768 "Unknown mode". Mode provided by the client were unknown to
1771 38 SILC_STATUS_ERR_NOT_YOU
1773 "Cannot change mode for other users". User tried to change
1774 someone else's mode.
1776 39 SILC_STATUS_ERR_NO_CHANNEL_PRIV
1778 "Permission denied. You are not channel operator". Command may
1779 be executed only by channel operator.
1781 40 SILC_STATUS_ERR_NO_CHANNEL_FOPRIV
1783 "Permission denied. You are not channel founder". Command may
1784 be executed only by channel operator.
1786 41 SILC_STATUS_ERR_NO_SERVER_PRIV
1788 "Permission denied. You are not server operator". Command may
1789 be executed only by server operator.
1791 42 SILC_STATUS_ERR_NO_ROUTER_PRIV
1793 "Permission denied. You are not SILC operator". Command may be
1794 executed only by router (SILC) operator.
1796 43 SILC_STATUS_ERR_BAD_NICKNAME
1798 "Bad nickname". Nickname requested contained illegal characters
1801 44 SILC_STATUS_ERR_BAD_CHANNEL
1803 "Bad channel name". Channel requested contained illegal characters
1806 45 SILC_STATUS_ERR_AUTH_FAILED
1808 "Authentication failed". The authentication data sent as
1809 argument were wrong and thus authentication failed.
1811 46 SILC_STATUS_ERR_UNKOWN_ALGORITHM
1813 "The algorithm was not supported." The server does not support the
1814 requested algorithm.
1816 47 SILC_STATUS_ERR_NO_SUCH_SERVER_ID
1818 "No such Server ID". Server ID provided does not exist.
1824 3 Security Considerations
1826 Security is central to the design of this protocol, and these security
1827 considerations permeate the specification. Common security considerations
1828 such as keeping private keys truly private and using adequate lengths for
1829 symmetric and asymmetric keys must be followed in order to maintain the
1830 security of this protocol.
1836 [SILC1] Riikonen, P., "Secure Internet Live Conferencing (SILC),
1837 Protocol Specification", Internet Draft, April 2001.
1839 [SILC2] Riikonen, P., "SILC Packet Protocol", Internet Draft,
1842 [SILC3] Riikonen, P., "SILC Key Exchange and Authentication
1843 Protocols", Internet Draft, April 2001.
1845 [IRC] Oikarinen, J., and Reed D., "Internet Relay Chat Protocol",
1848 [IRC-ARCH] Kalt, C., "Internet Relay Chat: Architecture", RFC 2810,
1851 [IRC-CHAN] Kalt, C., "Internet Relay Chat: Channel Management", RFC
1854 [IRC-CLIENT] Kalt, C., "Internet Relay Chat: Client Protocol", RFC
1857 [IRC-SERVER] Kalt, C., "Internet Relay Chat: Server Protocol", RFC
1860 [SSH-TRANS] Ylonen, T., et al, "SSH Transport Layer Protocol",
1863 [PGP] Callas, J., et al, "OpenPGP Message Format", RFC 2440,
1866 [SPKI] Ellison C., et al, "SPKI Certificate Theory", RFC 2693,
1869 [PKIX-Part1] Housley, R., et al, "Internet X.509 Public Key
1870 Infrastructure, Certificate and CRL Profile", RFC 2459,
1873 [Schneier] Schneier, B., "Applied Cryptography Second Edition",
1874 John Wiley & Sons, New York, NY, 1996.
1876 [Menezes] Menezes, A., et al, "Handbook of Applied Cryptography",
1879 [OAKLEY] Orman, H., "The OAKLEY Key Determination Protocol",
1880 RFC 2412, November 1998.
1882 [ISAKMP] Maughan D., et al, "Internet Security Association and
1883 Key Management Protocol (ISAKMP)", RFC 2408, November
1886 [IKE] Harkins D., and Carrel D., "The Internet Key Exchange
1887 (IKE)", RFC 2409, November 1998.
1889 [HMAC] Krawczyk, H., "HMAC: Keyed-Hashing for Message
1890 Authentication", RFC 2104, February 1997.
1892 [PKCS1] Kalinski, B., and Staddon, J., "PKCS #1 RSA Cryptography
1893 Specifications, Version 2.0", RFC 2437, October 1998.
1895 [RFC2119] Bradner, S., "Key Words for use in RFCs to Indicate
1896 Requirement Levels", BCP 14, RFC 2119, March 1997.
1908 EMail: priikone@poseidon.pspt.fi
1910 This Internet-Draft expires 25 October 2001