3
0
mirror of https://github.com/pragma-/pbot.git synced 2024-11-23 12:29:27 +01:00
pbot/PBot/Capabilities.pm
2020-02-18 09:50:02 -08:00

256 lines
10 KiB
Perl

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
package PBot::Capabilities;
use parent 'PBot::Class';
# purpose: provides interface to set/remove/modify/query user capabilities.
#
# Examples:
#
use warnings; use strict;
use feature 'unicode_strings';
use feature 'switch';
no if $] >= 5.018, warnings => "experimental::smartmatch";
sub initialize {
my ($self, %conf) = @_;
my $filename = $conf{filename} // $self->{pbot}->{registry}->get_value('general', 'data_dir') . '/capabilities';
$self->{caps} = PBot::HashObject->new(name => 'Capabilities', filename => $filename, pbot => $self->{pbot});
$self->{caps}->load;
# 'cap' command registered in PBot.pm because $self->{pbot}->{commands} is not yet loaded.
# add some capabilities used in this file
$self->add('can-modify-capabilities', undef, 1);
$self->add('can-group-capabilities', undef, 1);
$self->add('can-ungroup-capabilities', undef, 1);
# add some useful capabilities
$self->add('is-whitelisted', undef, 1);
}
sub has {
my ($self, $cap, $subcap, $depth) = @_;
my $cap_data = $self->{caps}->get_data($cap);
return 0 if not defined $cap_data;
if ($cap eq $subcap) {
return 0 if exists $cap_data->{$subcap} and not $cap_data->{$subcap};
return 1;
}
$depth //= 10;
if (--$depth <= 0) {
$self->{pbot}->{logger}->log("Max recursion reached for PBot::Capabilities->has($cap, $subcap)\n");
return 0;
}
foreach my $c ($self->{caps}->get_keys($cap)) {
return 1 if $c eq $subcap and $cap_data->{$c};
return 1 if $self->has($c, $subcap, $depth);
}
return 0;
}
sub userhas {
my ($self, $user, $cap) = @_;
return 0 if not defined $user;
return 1 if $user->{$cap};
foreach my $key (keys %$user) {
next if $key eq '_name';
next if not $user->{$key};
return 1 if $self->has($key, $cap);
}
return 0;
}
sub exists {
my ($self, $cap) = @_;
$cap = lc $cap;
foreach my $c ($self->{caps}->get_keys) {
return 1 if $c eq $cap;
foreach my $sub_cap ($self->{caps}->get_keys($c)) { return 1 if $sub_cap eq $cap; }
}
return 0;
}
sub add {
my ($self, $cap, $subcap, $dontsave) = @_;
if (not defined $subcap) {
if (not $self->{caps}->exists($cap)) { $self->{caps}->add($cap, {}, $dontsave); }
} else {
if ($self->{caps}->exists($cap)) { $self->{caps}->set($cap, $subcap, 1, $dontsave); }
else { $self->{caps}->add($cap, {$subcap => 1}, $dontsave); }
}
}
sub remove {
my ($self, $cap, $subcap) = @_;
$cap = lc $cap;
if (not defined $subcap) {
foreach my $c ($self->{caps}->get_keys) {
foreach my $sub_cap ($self->{caps}->get_keys($c)) { $self->{caps}->remove($c, $sub_cap, 1) if $sub_cap eq $cap; }
$self->{caps}->remove($c, undef, 1) if $c eq $cap;
}
} else {
$self->{caps}->remove($cap, $subcap, 1) if $self->{caps}->exists($cap);
}
$self->{caps}->save;
}
sub rebuild_botowner_capabilities {
my ($self) = @_;
$self->{caps}->remove('botowner', undef, 1);
foreach my $cap ($self->{caps}->get_keys) { $self->add('botowner', $cap, 1); }
}
sub list {
my ($self, $capability) = @_;
return "No such capability $capability." if defined $capability and not $self->{caps}->exists($capability);
my @caps;
my @groups;
my @standalones;
my $result;
if (not defined $capability) {
@caps = sort $self->{caps}->get_keys;
$result = 'Capabilities: ';
} else {
@caps = sort $self->{caps}->get_keys($capability);
return "Capability $capability has no grouped capabilities." if not @caps;
$result = "Grouped capabilities for $capability: ";
}
# first list all capabilities that have sub-capabilities (i.e. grouped capabilities)
# then list stand-alone capabilities
foreach my $cap (@caps) {
my $count = $self->{caps}->get_keys($cap);
if ($count > 0) { push @groups, "$cap ($count cap" . ($count == 1 ? '' : 's') . ")" if $count; }
else { push @standalones, $cap; }
}
$result .= join ', ', @groups, @standalones;
return $result;
}
sub capcmd {
my ($self, $from, $nick, $user, $host, $arguments, $stuff) = @_;
my $command = $self->{pbot}->{interpreter}->shift_arg($stuff->{arglist});
my $result;
given ($command) {
when ('list') {
my $cap = $self->{pbot}->{interpreter}->shift_arg($stuff->{arglist});
return $self->list($cap);
}
when ('whohas') {
my $cap = $self->{pbot}->{interpreter}->shift_arg($stuff->{arglist});
return "Usage: cap whohas <capability>; Lists all users who have <capability>" if not defined $cap;
return "No such capability $cap." if not $self->exists($cap);
my $result = "Users with capability $cap: ";
my $matched = 0;
my $users = $self->{pbot}->{users}->{users};
foreach my $channel (sort $users->get_keys) {
my @matches;
foreach my $hostmask (sort $users->get_keys($channel)) {
my $u = $users->get_data($channel, $hostmask);
push @matches, $u->{name} if $self->userhas($u, $cap);
}
if (@matches) {
$result .= '; ' if $matched;
my $global = $matched ? 'global: ' : '';
$result .= $users->get_data($channel, '_name') eq '.*' ? $global : $users->get_data($channel, '_name') . ': ';
$result .= join ', ', @matches;
$matched = 1;
}
}
$result .= 'nobody' if not $matched;
return $result;
}
when ('userhas') {
my ($hostmask, $cap) = $self->{pbot}->{interpreter}->split_args($stuff->{arglist}, 2);
return "Usage: cap userhas <user> [capability]; Lists capabilities belonging to <user>" if not defined $hostmask;
$cap = lc $cap if defined $cap;
my $u = $self->{pbot}->{users}->find_user($from, $hostmask, 1);
if (not defined $u) {
$from = 'global' if $from !~ /^#/;
return "No such user $hostmask in $from.";
}
if (defined $cap) {
return "Try again. No such capability $cap." if not $self->exists($cap);
if ($self->userhas($u, $cap)) { return "Yes. User $u->{name} has capability $cap."; }
else { return "No. User $u->{name} does not have capability $cap."; }
} else {
my $result = "User $u->{name} has capabilities: ";
my @groups;
my @single;
foreach my $key (sort keys %{$u}) {
next if $key eq '_name';
next if not $self->exists($key);
my $count = $self->{caps}->get_keys;
if ($count > 0) { push @groups, "$key ($count cap" . ($count == 1 ? '' : 's') . ")"; }
else { push @single, $key; }
}
if (@groups or @single) { $result .= join ', ', @groups, @single; }
else { $result = "User $u->{name} has no capabilities."; }
return $result;
}
}
when ('group') {
my ($cap, $subcaps) = $self->{pbot}->{interpreter}->split_args($stuff->{arglist}, 2);
return "Usage: cap group <existing or new capability> <existing capabilities...>" if not defined $cap or not defined $subcaps;
my $u = $self->{pbot}->{users}->loggedin($from, "$nick!$user\@$host");
return "You must be logged into your user account to group capabilities together." if not defined $u;
return "You must have the can-group-capabilities capability to group capabilities together." if not $self->userhas($u, 'can-group-capabilities');
my @caps = split /\s+|,/, $subcaps;
foreach my $c (@caps) {
return "No such capability $c." if not $self->exists($c);
return "You cannot group a capability with itself." if lc $cap eq lc $c;
$self->add($cap, $c);
}
if (@caps > 1) { return "Capabilities " . join(', ', @caps) . " added to the $cap capability group."; }
else { return "Capability $subcaps added to the $cap capability group."; }
}
when ('ungroup') {
my ($cap, $subcaps) = $self->{pbot}->{interpreter}->split_args($stuff->{arglist}, 2);
return "Usage: cap ungroup <existing capability group> <grouped capabilities...>" if not defined $cap or not defined $subcaps;
return "No such capability $cap." if not $self->exists($cap);
my $u = $self->{pbot}->{users}->loggedin($from, "$nick!$user\@$host");
return "You must be logged into your user account to remove capabilities from groups." if not defined $u;
return "You must have the can-ungroup-capabilities capability to remove capabilities from groups." if not $self->userhas($u, 'can-ungroup-capabilities');
my @caps = split /\s+|,/, $subcaps;
foreach my $c (@caps) {
return "No such capability $c." if not $self->exists($c);
return "Capability $c does not belong to the $cap capability group." if not $self->has($cap, $c);
$self->remove($cap, $c);
}
if (@caps > 1) { return "Capabilities " . join(', ', @caps) . " removed from the $cap capability group."; }
else { return "Capability $subcaps removed from the $cap capability group."; }
}
default {
$result =
"Usage: cap list [capability] | cap group <existing or new capability group> <existing capabilities...> | cap ungroup <existing capability group> <grouped capabilities...> | cap userhas <user> [capability] | cap whohas <capability>";
}
}
return $result;
}
1;