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<?php
/**
* Automatic user rights promotion based on conditions specified
* in $wgAutopromote.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
/**
* This class checks if user can get extra rights
* because of conditions specified in $wgAutopromote
*/
class Autopromote {
/**
* Get the groups for the given user based on $wgAutopromote.
*
* @param $user User The user to get the groups for
* @return array Array of groups to promote to.
*/
public static function getAutopromoteGroups( User $user ) {
global $wgAutopromote;
$promote = array();
foreach ( $wgAutopromote as $group => $cond ) {
if ( self::recCheckCondition( $cond, $user ) ) {
$promote[] = $group;
}
}
wfRunHooks( 'GetAutoPromoteGroups', array( $user, &$promote ) );
return $promote;
}
/**
* Get the groups for the given user based on the given criteria.
*
* Does not return groups the user already belongs to or has once belonged.
*
* @param $user User The user to get the groups for
* @param $event String key in $wgAutopromoteOnce (each one has groups/criteria)
*
* @return array Groups the user should be promoted to.
*
* @see $wgAutopromoteOnce
*/
public static function getAutopromoteOnceGroups( User $user, $event ) {
global $wgAutopromoteOnce;
$promote = array();
if ( isset( $wgAutopromoteOnce[$event] ) && count( $wgAutopromoteOnce[$event] ) ) {
$currentGroups = $user->getGroups();
$formerGroups = $user->getFormerGroups();
foreach ( $wgAutopromoteOnce[$event] as $group => $cond ) {
// Do not check if the user's already a member
if ( in_array( $group, $currentGroups ) ) {
continue;
}
// Do not autopromote if the user has belonged to the group
if ( in_array( $group, $formerGroups ) ) {
continue;
}
// Finally - check the conditions
if ( self::recCheckCondition( $cond, $user ) ) {
$promote[] = $group;
}
}
}
return $promote;
}
/**
* Recursively check a condition. Conditions are in the form
* array( '&' or '|' or '^' or '!', cond1, cond2, ... )
* where cond1, cond2, ... are themselves conditions; *OR*
* APCOND_EMAILCONFIRMED, *OR*
* array( APCOND_EMAILCONFIRMED ), *OR*
* array( APCOND_EDITCOUNT, number of edits ), *OR*
* array( APCOND_AGE, seconds since registration ), *OR*
* similar constructs defined by extensions.
* This function evaluates the former type recursively, and passes off to
* self::checkCondition for evaluation of the latter type.
*
* @param $cond Mixed: a condition, possibly containing other conditions
* @param $user User The user to check the conditions against
* @return bool Whether the condition is true
*/
private static function recCheckCondition( $cond, User $user ) {
$validOps = array( '&', '|', '^', '!' );
if ( is_array( $cond ) && count( $cond ) >= 2 && in_array( $cond[0], $validOps ) ) {
# Recursive condition
if ( $cond[0] == '&' ) { // AND (all conds pass)
foreach ( array_slice( $cond, 1 ) as $subcond ) {
if ( !self::recCheckCondition( $subcond, $user ) ) {
return false;
}
}
return true;
} elseif ( $cond[0] == '|' ) { // OR (at least one cond passes)
foreach ( array_slice( $cond, 1 ) as $subcond ) {
if ( self::recCheckCondition( $subcond, $user ) ) {
return true;
}
}
return false;
} elseif ( $cond[0] == '^' ) { // XOR (exactly one cond passes)
if ( count( $cond ) > 3 ) {
wfWarn( 'recCheckCondition() given XOR ("^") condition on three or more conditions. Check your $wgAutopromote and $wgAutopromoteOnce settings.' );
}
return self::recCheckCondition( $cond[1], $user )
xor self::recCheckCondition( $cond[2], $user );
} elseif ( $cond[0] == '!' ) { // NOT (no conds pass)
foreach ( array_slice( $cond, 1 ) as $subcond ) {
if ( self::recCheckCondition( $subcond, $user ) ) {
return false;
}
}
return true;
}
}
# If we got here, the array presumably does not contain other condi-
# tions; it's not recursive. Pass it off to self::checkCondition.
if ( !is_array( $cond ) ) {
$cond = array( $cond );
}
return self::checkCondition( $cond, $user );
}
/**
* As recCheckCondition, but *not* recursive. The only valid conditions
* are those whose first element is APCOND_EMAILCONFIRMED/APCOND_EDITCOUNT/
* APCOND_AGE. Other types will throw an exception if no extension evalu-
* ates them.
*
* @param $cond Array: A condition, which must not contain other conditions
* @param $user User The user to check the condition against
* @return bool Whether the condition is true for the user
*/
private static function checkCondition( $cond, User $user ) {
global $wgEmailAuthentication;
if ( count( $cond ) < 1 ) {
return false;
}
switch( $cond[0] ) {
case APCOND_EMAILCONFIRMED:
if ( Sanitizer::validateEmail( $user->getEmail() ) ) {
if ( $wgEmailAuthentication ) {
return (bool)$user->getEmailAuthenticationTimestamp();
} else {
return true;
}
}
return false;
case APCOND_EDITCOUNT:
return $user->getEditCount() >= $cond[1];
case APCOND_AGE:
$age = time() - wfTimestampOrNull( TS_UNIX, $user->getRegistration() );
return $age >= $cond[1];
case APCOND_AGE_FROM_EDIT:
$age = time() - wfTimestampOrNull( TS_UNIX, $user->getFirstEditTimestamp() );
return $age >= $cond[1];
case APCOND_INGROUPS:
$groups = array_slice( $cond, 1 );
return count( array_intersect( $groups, $user->getGroups() ) ) == count( $groups );
case APCOND_ISIP:
return $cond[1] == $user->getRequest()->getIP();
case APCOND_IPINRANGE:
return IP::isInRange( $user->getRequest()->getIP(), $cond[1] );
case APCOND_BLOCKED:
return $user->isBlocked();
case APCOND_ISBOT:
return in_array( 'bot', User::getGroupPermissions( $user->getGroups() ) );
default:
$result = null;
wfRunHooks( 'AutopromoteCondition', array( $cond[0], array_slice( $cond, 1 ), $user, &$result ) );
if ( $result === null ) {
throw new MWException( "Unrecognized condition {$cond[0]} for autopromotion!" );
}
return (bool)$result;
}
}
}
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