includes/Autopromote.php

   1 <?php
   2 /**
   3  * This class checks if user can get extra rights
   4  * because of conditions specified in $wgAutopromote
   5  */
   6
   7 class Autopromote {
   8         /**
   9          * Get the groups for the given user based on $wgAutopromote.
  10          *
  11          * @param $user User The user to get the groups for
  12          * @return array Array of groups to promote to.
  13          */
  14         public static function getAutopromoteGroups( User $user ) {
  15                 global $wgAutopromote;
  16
  17                 $promote = array();
  18
  19                 foreach ( $wgAutopromote as $group => $cond ) {
  20                         if ( self::recCheckCondition( $cond, $user ) ) {
  21                                 $promote[] = $group;
  22                         }
  23                 }
  24
  25                 wfRunHooks( 'GetAutoPromoteGroups', array( $user, &$promote ) );
  26
  27                 return $promote;
  28         }
  29
  30         /**
  31          * Get the groups for the given user based on the given criteria.
  32          *
  33          * Does not return groups the user already belongs to or has once belonged.
  34          *
  35          * @param $user The user to get the groups for
  36          * @param $event String key in $wgAutopromoteOnce (each one has groups/criteria)
  37          *
  38          * @return array Groups the user should be promoted to.
  39          *
  40          * @see $wgAutopromoteOnce
  41          */
  42         public static function getAutopromoteOnceGroups( User $user, $event ) {
  43                 global $wgAutopromoteOnce;
  44
  45                 $promote = array();
  46
  47                 if ( isset( $wgAutopromoteOnce[$event] ) && count( $wgAutopromoteOnce[$event] ) ) {
  48                         $currentGroups = $user->getGroups();
  49                         foreach ( $wgAutopromoteOnce[$event] as $group => $cond ) {
  50                                 // Do not check if the user's already a member
  51                                 if ( in_array( $group, $currentGroups ) ) {
  52                                         continue;
  53                                 }
  54                                 // Do not autopromote if the user has belonged to the group
  55                                 $formerGroups = $user->getFormerGroups();
  56                                 if ( in_array( $group, $formerGroups ) ) {
  57                                         continue;
  58                                 }
  59                                 // Finally - check the conditions
  60                                 if ( self::recCheckCondition( $cond, $user ) ) {
  61                                         $promote[] = $group;
  62                                 }
  63                         }
  64                 }
  65
  66                 return $promote;
  67         }
  68
  69         /**
  70          * Recursively check a condition.  Conditions are in the form
  71          *   array( '&' or '|' or '^' or '!', cond1, cond2, ... )
  72          * where cond1, cond2, ... are themselves conditions; *OR*
  73          *   APCOND_EMAILCONFIRMED, *OR*
  74          *   array( APCOND_EMAILCONFIRMED ), *OR*
  75          *   array( APCOND_EDITCOUNT, number of edits ), *OR*
  76          *   array( APCOND_AGE, seconds since registration ), *OR*
  77          *   similar constructs defined by extensions.
  78          * This function evaluates the former type recursively, and passes off to
  79          * self::checkCondition for evaluation of the latter type.
  80          *
  81          * @param $cond Mixed: a condition, possibly containing other conditions
  82          * @param $user User The user to check the conditions against
  83          * @return bool Whether the condition is true
  84          */
  85         private static function recCheckCondition( $cond, User $user ) {
  86                 $validOps = array( '&', '|', '^', '!' );
  87
  88                 if ( is_array( $cond ) && count( $cond ) >= 2 && in_array( $cond[0], $validOps ) ) {
  89                         # Recursive condition
  90                         if ( $cond[0] == '&' ) {
  91                                 foreach ( array_slice( $cond, 1 ) as $subcond ) {
  92                                         if ( !self::recCheckCondition( $subcond, $user ) ) {
  93                                                 return false;
  94                                         }
  95                                 }
  96
  97                                 return true;
  98                         } elseif ( $cond[0] == '|' ) {
  99                                 foreach ( array_slice( $cond, 1 ) as $subcond ) {
 100                                         if ( self::recCheckCondition( $subcond, $user ) ) {
 101                                                 return true;
 102                                         }
 103                                 }
 104
 105                                 return false;
 106                         } elseif ( $cond[0] == '^' ) {
 107                                 $res = null;
 108                                 foreach ( array_slice( $cond, 1 ) as $subcond ) {
 109                                         if ( is_null( $res ) ) {
 110                                                 $res = self::recCheckCondition( $subcond, $user );
 111                                         } else {
 112                                                 $res = ( $res xor self::recCheckCondition( $subcond, $user ) );
 113                                         }
 114                                 }
 115
 116                                 return $res;
 117                         } elseif ( $cond[0] == '!' ) {
 118                                 foreach ( array_slice( $cond, 1 ) as $subcond ) {
 119                                         if ( self::recCheckCondition( $subcond, $user ) ) {
 120                                                 return false;
 121                                         }
 122                                 }
 123
 124                                 return true;
 125                         }
 126                 }
 127                 # If we got here, the array presumably does not contain other condi-
 128                 # tions; it's not recursive.  Pass it off to self::checkCondition.
 129                 if ( !is_array( $cond ) ) {
 130                         $cond = array( $cond );
 131                 }
 132
 133                 return self::checkCondition( $cond, $user );
 134         }
 135
 136         /**
 137          * As recCheckCondition, but *not* recursive.  The only valid conditions
 138          * are those whose first element is APCOND_EMAILCONFIRMED/APCOND_EDITCOUNT/
 139          * APCOND_AGE.  Other types will throw an exception if no extension evalu-
 140          * ates them.
 141          *
 142          * @param $cond Array: A condition, which must not contain other conditions
 143          * @param $user User The user to check the condition against
 144          * @return bool Whether the condition is true for the user
 145          */
 146         private static function checkCondition( $cond, User $user ) {
 147                 global $wgEmailAuthentication;
 148                 if ( count( $cond ) < 1 ) {
 149                         return false;
 150                 }
 151
 152                 switch( $cond[0] ) {
 153                         case APCOND_EMAILCONFIRMED:
 154                                 if ( User::isValidEmailAddr( $user->getEmail() ) ) {
 155                                         if ( $wgEmailAuthentication ) {
 156                                                 return (bool)$user->getEmailAuthenticationTimestamp();
 157                                         } else {
 158                                                 return true;
 159                                         }
 160                                 }
 161                                 return false;
 162                         case APCOND_EDITCOUNT:
 163                                 return $user->getEditCount() >= $cond[1];
 164                         case APCOND_AGE:
 165                                 $age = time() - wfTimestampOrNull( TS_UNIX, $user->getRegistration() );
 166                                 return $age >= $cond[1];
 167                         case APCOND_AGE_FROM_EDIT:
 168                                 $age = time() - wfTimestampOrNull( TS_UNIX, $user->getFirstEditTimestamp() );
 169                                 return $age >= $cond[1];
 170                         case APCOND_INGROUPS:
 171                                 $groups = array_slice( $cond, 1 );
 172                                 return count( array_intersect( $groups, $user->getGroups() ) ) == count( $groups );
 173                         case APCOND_ISIP:
 174                                 return $cond[1] == wfGetIP();
 175                         case APCOND_IPINRANGE:
 176                                 return IP::isInRange( wfGetIP(), $cond[1] );
 177                         case APCOND_BLOCKED:
 178                                 return $user->isBlocked();
 179                         case APCOND_ISBOT:
 180                                 return in_array( 'bot', User::getGroupPermissions( $user->getGroups() ) );
 181                         default:
 182                                 $result = null;
 183                                 wfRunHooks( 'AutopromoteCondition', array( $cond[0], array_slice( $cond, 1 ), $user, &$result ) );
 184                                 if ( $result === null ) {
 185                                         throw new MWException( "Unrecognized condition {$cond[0]} for autopromotion!" );
 186                                 }
 187
 188                                 return (bool)$result;
 189                 }
 190         }
 191 }