315 lines
11 KiB
Plaintext
315 lines
11 KiB
Plaintext
<chapter id="cmodes">
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<title>Cmodes</title>
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<sect1>
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<title>Meanings of channel modes</title>
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<sect2>
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<title>+b, channel ban</title>
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<para>
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Bans take one parameter which can take several forms.
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The most common form is +b nick!user@host.
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The wildcards * and ? are allowed, matching zero-or-more, and
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exactly-one characters respectively. The masks will be trimmed to fit the maximum allowable
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length for the relevant element.
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Bans are also checked against the IP address, even if it resolved or
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is spoofed.
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CIDR is supported, like *!*@10.0.0.0/8. This is most useful with
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IPv6.
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Bans are not checked against the real hostname behind any kind
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of spoof, except if host mangling is in use (e.g.
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<filename>extensions/ip_cloaking.so</filename>):
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if the user's host is mangled, their real hostname is checked
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additionally, and if a user has no spoof but could enable mangling,
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the mangled form of their hostname is checked additionally.
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Hence, it is not possible to evade bans by toggling
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host mangling.
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</para>
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<para>
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The second form (extban) is +b $type or +b $type:data.
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type is a single character (case insensitive) indicating the
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type of match, optionally preceded by a tilde (~) to negate the
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comparison. data depends on type. Each type is loaded as a module.
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The available types (if any)
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are listed in the EXTBAN token of the 005 (RPL_ISUPPORT) numeric.
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See <filename>doc/extban.txt</filename> in the source distribution
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for more information.
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</para>
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<para>
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If no parameter is given, the list of bans is returned. All users
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can use this form. The plus sign should also be omitted.
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</para>
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<para>
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Matching users will not be allowed to join the channel or knock
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on it. If they are already on the channel, they may not send to
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it or change their nick.
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</para>
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</sect2>
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<sect2>
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<title>+c, colour filter</title>
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<para>
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This cmode activates the colour filter for the channel. This filters out bold, underline,
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reverse video, beeps, mIRC colour codes, and ANSI escapes. Note that escape sequences will
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usually leave cruft sent to the channel, just without the escape characters themselves.
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</para>
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</sect2>
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<sect2>
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<title>+e, ban exemption</title>
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<para>
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This mode takes one parameter of the same form as bans, which
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overrides +b and +q bans for all clients it matches.
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</para>
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<para>
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Only channel operators can see +e changes or request the list.
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</para>
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</sect2>
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<sect2>
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<title>+f, channel forwarding</title>
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<para>
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This mode takes one parameter, the name of a channel (+f #channel). If the channel also has the
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+i cmode set, and somebody attempts to join without either being expliticly invited, or having
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an invex (+I), then they will instead join the channel named in the mode parameter. The client
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will also be sent a 470 numeric giving the original and target channels.
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</para>
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<para>
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Users are similarly forwarded if the +j cmode is set and their attempt to join is throttled,
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if +l is set and there are already too many users in the channel
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or if +r is set and they are not identified.
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</para>
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<para>
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Forwards may only be set to +F channels, or to channels the setter
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has ops in.
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</para>
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<para>
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Without parameter (/mode #channel f or /mode #channel +f) the
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forward channel is returned. This form also works off channel.
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</para>
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</sect2>
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<sect2>
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<title>+F, allow anybody to forward to this</title>
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<para>
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When this mode is set, anybody may set a forward from a channel
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they have ops in to this channel. Otherwise they have to have ops
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in this channel.
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</para>
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</sect2>
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<sect2>
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<title>+g, allow anybody to invite</title>
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<para>
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When this mode is set, anybody may use the INVITE command on the channel in question. When it
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is unset, only channel operators may use the INVITE command
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(unless the invite_ops_only option is disabled and +i is
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not set).
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</para>
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<para>
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When this mode is set together with +i, all channel members can influence who can join.
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</para>
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</sect2>
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<sect2>
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<title>+i, invite only</title>
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<para>
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When this cmode is set, no client can join the channel unless they have an invex (+I) or are
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invited with the INVITE command.
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</para>
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</sect2>
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<sect2>
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<title>+I, invite exception (invex)</title>
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<para>
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This mode takes one parameter of the same form as bans. Matching
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clients do not need to be invited to join the channel when it is invite-only (+i).
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</para>
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<para>
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Only channel operators can see +I changes or request the list.
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</para>
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</sect2>
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<sect2>
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<title>+j, join throttling</title>
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<para>
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This mode takes one parameter of the form <replaceable>n</replaceable>:<replaceable>t</replaceable>, where <replaceable>n</replaceable> and <replaceable>t</replaceable> are positive integers. Only <replaceable>n</replaceable> users may join in each period of <replaceable>t</replaceable> seconds.
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</para>
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<para>
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Due to propagation delays between servers, more users may be
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able to join (by racing for the last slot on each server).
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</para>
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</sect2>
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<sect2>
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<title>+k, key (channel password)</title>
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<para>
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Taking one parameter, when set, this mode requires a user to supply the key in order to join
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the channel: /JOIN #channel key.
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</para>
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</sect2>
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<sect2>
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<title>+l, channel member limit</title>
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<para>
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Takes one numeric parameter, the number of users which are allowed to be in the channel before
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further joins are blocked.
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</para>
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<para>
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Due to propagation delays between servers, more users may be
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able to join (by racing for the last slot on each server).
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</para>
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</sect2>
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<sect2>
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<title>+L, large ban list</title>
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<para>
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Channels with this mode will be allowed larger banlists (by default,
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500 instead of 50 entries for +b, +q, +e and +I together).
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Only network operators may set this mode.
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</para>
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</sect2>
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<sect2>
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<title>+m, moderated</title>
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<para>
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When a channel is set +m, only users with +o or +v on the channel can send to it.
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</para>
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<para>
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Users can still knock on the channel or change their nick.
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</para>
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</sect2>
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<sect2>
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<title>+n, no external messages</title>
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<para>
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When set, this mode prevents users from sending to the channel without being in it themselves.
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This is recommended.
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</para>
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</sect2>
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<sect2>
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<title>+o, channel operator</title>
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<para>
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This mode takes one parameter, a nick, and grants or removes channel
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operator privilege to that user. Channel operators have full control
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over the channel, having the ability to set all channel modes except
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+L and +P, and kick users.
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Like voiced users, channel operators can always
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send to the channel, overriding +b, +m and +q modes and the
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per-channel flood limit.
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In most clients channel operators are marked with an '@' sign.
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</para>
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<para>
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The privilege is lost if the user leaves the channel or server
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in any way.
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</para>
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<para>
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Most networks will run channel registration services (e.g. ChanServ)
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which ensure the founder (and users designated by the founder) can
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always gain channel operator privileges and provide some features
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to manage the channel.
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</para>
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</sect2>
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<sect2>
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<title>+p, paranoid channel</title>
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<para>
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When set, the KNOCK command cannot be used on the channel
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to request an invite, and users will not be shown the
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channel in WHOIS replies unless they are on it.
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Unlike in traditional IRC, +p and +s can be set together.
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</para>
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</sect2>
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<sect2>
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<title>+P, permanent channel</title>
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<para>
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Channels with this mode (which is accessible only to network operators) set will not be destroyed
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when the last user leaves.
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</para>
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<para>
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This makes it less likely modes, bans and the topic will be lost and
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makes it harder to abuse network splits, but also causes more
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unwanted restoring of old modes, bans and topics after long splits.
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</para>
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</sect2>
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<sect2>
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<title>+q, quiet</title>
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<para>
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This mode behaves exactly like +b (ban), except that the user may still join
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the channel. The net effect is that they cannot knock on the channel,
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send to the channel or change their nick while on channel.
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</para>
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</sect2>
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<sect2>
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<title>+Q, block forwarded users</title>
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<para>
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Channels with this mode set are not valid targets for forwarding. Any attempt to forward to
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this channel will be ignored, and the user will be handled as if the attempt was never made (by
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sending them the relevant error message).
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</para>
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<para>
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This does not affect the ability to set +f.
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</para>
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</sect2>
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<sect2>
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<title>+r, block unidentified</title>
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<para>
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When set, this mode prevents unidentified users from joining.
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</para>
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</sect2>
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<!-- not planned (jilles)
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<sect2>
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<title>+R, quiet unidentified</title>
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<para>
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When set, this mode prevents unidentified users from sending to the channel, although they can
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still join.
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</para>
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<para>
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Please note that this mode is not implemented in Charybdis 1.0.x, and is documented in
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expectation for upcoming Charybdis 1.1.
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</para>
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</sect2>
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-->
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<sect2>
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<title>+s, secret channel</title>
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<para>
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When set, this mode prevents the channel from appearing in the
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output of the LIST, WHO and WHOIS command by users who are not on
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it. Also, the server will refuse to answer WHO, NAMES, TOPIC and
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LIST queries from users not on the channel.
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</para>
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</sect2>
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<sect2>
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<title>+t, topic limit</title>
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<para>
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When set, this mode prevents users who are not channel operators
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from changing the topic.
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</para>
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</sect2>
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<sect2>
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<title>+v, voice</title>
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<para>
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This mode takes one parameter, a nick, and grants or removes voice
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privilege to that user. Voiced users can always send to the channel,
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overriding +b, +m and +q modes and the per-channel flood limit.
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In most clients voiced users are marked with a plus sign.
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</para>
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<para>
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The privilege is lost if the user leaves the channel or server
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in any way.
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</para>
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</sect2>
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<sect2>
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<title>+z, reduced moderation</title>
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<para>
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When +z is set, the effects of +m are relaxed. For each message, if that message
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would normally be blocked by moderation, it is instead sent to all channel operators. This is intended for use in moderated debates.
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</para>
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<para>
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Note that +n and channel bans/quiets are unaffected by this. To silence a given user completely,
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remove them from the channel.
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</para>
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</sect2>
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</sect1>
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</chapter>
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fill-column:105
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End:
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