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<date>18 Feb 2004</date> <date>18 Feb 2004</date>
<revremark>Initial Docbook translation</revremark> <revremark>Initial Docbook translation</revremark>
</revision> </revision>
<revision>
<revnumber>0.2</revnumber>
<date>04 Sep 2004</date>
<revremark>Update Docbook translation</revremark>
</revision>
</revhistory> </revhistory>
</articleinfo> </articleinfo>
<sect1> <sect1>
@ -68,49 +73,49 @@
&ldquo;anticapability&rdquo; for that command. An anticapability is &ldquo;anticapability&rdquo; for that command. An anticapability is
a capability that, instead of saying &ldquo;what a user can a capability that, instead of saying &ldquo;what a user can
do&rdquo;, says what a user <emphasis>cannot</emphasis> do. It's do&rdquo;, says what a user <emphasis>cannot</emphasis> do. It's
formed rather simply by adding a dash (&ldquo;-&rdquo;) to the formed rather simply by adding a dash (&ldquo;-&rdquo;) to the
beginning of a capability; <botcommand>rot13</botcommand> is a beginning of a capability; <botcommand>rot13</botcommand> is a
capability, and <botcommand>-rot13</botcommand> is an capability, and <botcommand>-rot13</botcommand> is an
anticapability. Anyway, when a user issues the bot a command, anticapability. Anyway, when a user issues the bot a command,
perhaps <botcommand>calc</botcommand> or perhaps <botcommand>calc</botcommand> or
<botcommand>help</botcommand>, the bot first checks to make sure <botcommand>help</botcommand>, the bot first checks to make sure
the user doesn't have the <capability>-calc</capability> or the the user doesn't have the <capability>-calc</capability> or the
<capability>-help</capability> capabilities before even <capability>-help</capability> capabilities before even
considering responding to the user. So commands can be turned on considering responding to the user. So commands can be turned on
or off on a <emphasis>per user</emphasis> basis, offering or off on a <emphasis>per user</emphasis> basis, offering
finegrained control not often (if at all!) seen in other bots. finegrained control not often (if at all!) seen in other bots.
</para> </para>
<sect2> <sect2>
<title>Channel capabilities</title> <title>Channel capabilities</title>
<para> <para>
But that's not all! The capabilities system also supports But that's not all! The capabilities system also supports
<emphasis>Channel</emphasis> capabilities, which are <emphasis>Channel</emphasis> capabilities, which are
capabilities that only apply to a specific channel; they're of capabilities that only apply to a specific channel; they're of
the form <capability>#channel.capability</capability>. the form <capability>#channel,capability</capability>.
Whenever a user issues a command to the bot in a channel, the Whenever a user issues a command to the bot in a channel, the
command dispatcher also checks to make sure the user doesn't command dispatcher also checks to make sure the user doesn't
have the anticapability for that command <emphasis>in that have the anticapability for that command <emphasis>in that
channel</emphasis> and if the user does, the bot won't respond channel</emphasis> and if the user does, the bot won't respond
to the user in the channel. Thus now, in addition to having to the user in the channel. Thus now, in addition to having
the ability to turn individual commands on or off for an the ability to turn individual commands on or off for an
individual user, we can now turn commands on or off for an individual user, we can now turn commands on or off for an
individual user on an individual channel! individual user on an individual channel!
</para> </para>
<para> <para>
So when a user <nick>foo</nick> sends a command So when a user <nick>foo</nick> sends a command
<botcommand>bar</botcommand> to the bot on channel <botcommand>bar</botcommand> to the bot on channel
<channel>#baz</channel>, first the bot checks to see if the <channel>#baz</channel>, first the bot checks to see if the
user has the anticapability for the command by itself, user has the anticapability for the command by itself,
<capability>-bar</capability>. If so, it returns right then <capability>-bar</capability>. If so, it returns right then
and there, compltely ignoring the fact that the user issued and there, compltely ignoring the fact that the user issued
that command to it. If the user doesn't have that that command to it. If the user doesn't have that
anticapability, then the bot checks to see if the user issued anticapability, then the bot checks to see if the user issued
the command over a channel, and if so, checks to see if the the command over a channel, and if so, checks to see if the
user has the antichannelcapability for that command, user has the antichannelcapability for that command,
<capability>#baz.-bar</capability>. If so, again, he returns <capability>#baz,-bar</capability>. If so, again, he returns
right then and there and doesn't even think about responding right then and there and doesn't even think about responding
to the bot. If neither of these anticapabilities are present, to the bot. If neither of these anticapabilities are present,
then the bot just responds to the user like normal. then the bot just responds to the user like normal.
</para> </para>
</sect2> </sect2>
</sect1> </sect1>
@ -119,7 +124,7 @@
<sect2> <sect2>
<title>A programmer's perspective</title> <title>A programmer's perspective</title>
<para> <para>
From a programmatical perspective, capabilties are easy to use From a programming perspective, capabilties are easy to use
and flexible. Any command can check if a user has any and flexible. Any command can check if a user has any
capability, even ones not thought of when the bot was capability, even ones not thought of when the bot was
originally written. Commands/Callbacks can add their own originally written. Commands/Callbacks can add their own
@ -140,6 +145,7 @@
bot to follow for users that haven't yet registered in his bot to follow for users that haven't yet registered in his
user database. user database.
</para> </para>
</sect2>
<para> <para>
It's really a revolution! It's really a revolution!
</para> </para>
@ -148,11 +154,11 @@
<title>Hard-coded supybot capabilities</title> <title>Hard-coded supybot capabilities</title>
<para> <para>
There are several default capabilities the bot uses. The most There are several default capabilities the bot uses. The most
important of these is the <capability>owner</capability> important of these is the <capability>owner</capability>
capability. This capability allows the person having it to use capability. This capability allows the person having it to use
<emphasis>any</emphasis> command. It's best to keep this <emphasis>any</emphasis> command. It's best to keep this
capability reserved to people who actually have access to the capability reserved to people who actually have access to the
shell the bot is running on. shell the bot is running on.
</para> </para>
<para> <para>
There is also the <capability>admin</capability> capability for There is also the <capability>admin</capability> capability for
@ -164,41 +170,50 @@
people with the next capability. people with the next capability.
</para> </para>
<para> <para>
People who are to administer channels with the bot should have the People who are to administer channels with the bot should have the
<capability>#channel.op</capability> capability -- whatever <capability>#channel,op</capability> capability &ndash; whatever
channel they are to administrate, they should have that channel channel they are to administrate, they should have that channel
capability for <capability>op</capability>. For example, since I capability for <capability>op</capability>. For example, since I
want <nick>inkedmn</nick> to be an administrator in want <nick>inkedmn</nick> to be an administrator in
<channel>#supybot</channel>, I'll give him the <channel>#supybot</channel>, I'll give him the
<capability>#supybot.op</capability> capability. This is in <capability>#supybot,op</capability> capability. This is in
addition to his <capability>admin</capability> capability, since addition to his <capability>admin</capability> capability, since
the <capability>admin</capability> capability doesn't give the the <capability>admin</capability> capability doesn't give the
person having it control over channels. person having it control over channels.
<capability>#channel.op</capability> is used for such things as <capability>#channel.op</capability> is used for such things as
giving/receiving ops, kickbanning people, lobotomizing the bot, giving/receiving ops, kickbanning people, lobotomizing the bot,
ignoring users in the channel, and managing the channel ignoring users in the channel, and managing the channel
capabilities. The <capability>#channel.op</capability> capability capabilities. The <capability>#channel,op</capability> capability
is also basically the equivalent of the owner capability for is also basically the equivalent of the owner capability for
capabilities involving <channel>#channel</channel> &ndash; capabilities involving <channel>#channel</channel> &ndash;
basically anyone with the <capability>#channel.op</capability> basically anyone with the <capability>#channel,op</capability>
capability is considered to have all positive capabilities and no capability is considered to have all positive capabilities and no
negative capabilities for <channel>#channel</channel>. negative capabilities for <channel>#channel</channel>.
</para> </para>
<para> <para>
One other globally important capability exists: One other globally important capability exists:
<capability>trusted</capability>. This is a command that <capability>trusted</capability>. This is a command that
basically says &ldquo;This user can be trusted not to try and basically says &ldquo;This user can be trusted not to try and
crash the bot.&rdquo; It allows users to call commands like crash the bot.&rdquo; It allows users to call commands like
<botcommand>Math.icalc</botcommand>, which potentially could cause the <botcommand>Math.icalc</botcommand>, which potentially could cause the
bot to begin a calculation that could potentially never return (a bot to begin a calculation that could potentially never return (a
calculation like 10**10**10**10). Another command that requires calculation like 10**10**10**10). Another command that requires
the trusted capability is <botcommand>Utilties.re</botcommand>, which the trusted capability is <botcommand>Utilties.re</botcommand>, which
(due to the regular expression implementation in Python (and any (due to the regular expression implementation in Python (and any
other language that uses NFA regular expressions, like Perl or other language that uses NFA regular expressions, like Perl or
Ruby or Lua or &hellip;) which can allow a regular expression to Ruby or Lua or &hellip;) which can allow a regular expression to
take exponential time to process). Consider what would happen if take exponential time to process). Consider what would happen if
the someone gave the bot the command <literal>re [strjoin "" s/./ the someone gave the bot the command <literal>re [strjoin "" s/./
[dict go] /] [dict go]</literal>. [dict go] /] [dict go]</literal>.
</para>
</sect1>
<sect1>
<title>Other capabilities</title>
<para>
Other plugins may require different capabilities; the
<plugin>Factoids</plugin> plugin requires
<capability>#channel,factoids</capability>, the <plugin>Topic</plugin>
plugin requires <capability>#channel,topic</capability>, etc.
</para> </para>
</sect1> </sect1>
</article> </article>