* (bug 11649) Show input form when Special:Whatlinkshere has no parameters
[lhc/web/wiklou.git] / includes / Block.php
index b11df22..3688d7c 100644 (file)
@@ -1,7 +1,6 @@
 <?php
 /**
  * Blocks and bans object
- * @package MediaWiki
  */
 
 /**
  * Globals used: $wgAutoblockExpiry, $wgAntiLockFlags
  *
  * @todo This could be used everywhere, but it isn't.
- * @package MediaWiki
  */
 class Block
 {
        /* public*/ var $mAddress, $mUser, $mBy, $mReason, $mTimestamp, $mAuto, $mId, $mExpiry,
-                           $mRangeStart, $mRangeEnd, $mAnonOnly;
+                               $mRangeStart, $mRangeEnd, $mAnonOnly, $mEnableAutoblock, $mHideName, 
+                               $mBlockEmail;
        /* private */ var $mNetworkBits, $mIntegerAddr, $mForUpdate, $mFromMaster, $mByName;
        
        const EB_KEEP_EXPIRED = 1;
        const EB_FOR_UPDATE = 2;
        const EB_RANGE_ONLY = 4;
 
-       function Block( $address = '', $user = 0, $by = 0, $reason = '',
-               $timestamp = '' , $auto = 0, $expiry = '', $anonOnly = 0, $createAccount = 0 )
+       function __construct( $address = '', $user = 0, $by = 0, $reason = '',
+               $timestamp = '' , $auto = 0, $expiry = '', $anonOnly = 0, $createAccount = 0, $enableAutoblock = 0, 
+               $hideName = 0, $blockEmail = 0 )
        {
                $this->mId = 0;
+               # Expand valid IPv6 addresses
+               $address = IP::sanitizeIP( $address );
                $this->mAddress = $address;
                $this->mUser = $user;
                $this->mBy = $by;
@@ -37,7 +39,9 @@ class Block
                $this->mAnonOnly = $anonOnly;
                $this->mCreateAccount = $createAccount;
                $this->mExpiry = self::decodeExpiry( $expiry );
-
+               $this->mEnableAutoblock = $enableAutoblock;
+               $this->mHideName = $hideName;
+               $this->mBlockEmail = $blockEmail;
                $this->mForUpdate = false;
                $this->mFromMaster = false;
                $this->mByName = false;
@@ -57,7 +61,7 @@ class Block
 
        static function newFromID( $id ) 
        {
-               $dbr =& wfGetDB( DB_SLAVE );
+               $dbr = wfGetDB( DB_SLAVE );
                $res = $dbr->resultObject( $dbr->select( 'ipblocks', '*', 
                        array( 'ipb_id' => $id ), __METHOD__ ) );
                $block = new Block;
@@ -72,7 +76,8 @@ class Block
        {
                $this->mAddress = $this->mReason = $this->mTimestamp = '';
                $this->mId = $this->mAnonOnly = $this->mCreateAccount = 
-                       $this->mAuto = $this->mUser = $this->mBy = 0;
+                       $this->mEnableAutoblock = $this->mAuto = $this->mUser = 
+                       $this->mBy = $this->mHideName = $this->mBlockEmail = 0;
                $this->mByName = false;
        }
 
@@ -83,14 +88,14 @@ class Block
        {
                global $wgAntiLockFlags;
                if ( $this->mForUpdate || $this->mFromMaster ) {
-                       $db =& wfGetDB( DB_MASTER );
+                       $db = wfGetDB( DB_MASTER );
                        if ( !$this->mForUpdate || ($wgAntiLockFlags & ALF_NO_BLOCK_LOCK) ) {
                                $options = array();
                        } else {
                                $options = array( 'FOR UPDATE' );
                        }
                } else {
-                       $db =& wfGetDB( DB_SLAVE );
+                       $db = wfGetDB( DB_SLAVE );
                        $options = array();
                }
                return $db;
@@ -111,9 +116,6 @@ class Block
                $options = array();
                $db =& $this->getDBOptions( $options );
 
-               $ret = false;
-               $killed = false;
-
                if ( 0 == $user && $address == '' ) {
                        # Invalid user specification, not blocked
                        $this->clear();
@@ -148,7 +150,7 @@ class Block
                }
 
                # Try range block
-               if ( $this->loadRange( $address, $killExpired, $user == 0 ) ) {
+               if ( $this->loadRange( $address, $killExpired, $user ) ) {
                        if ( $user && $this->mAnonOnly ) {
                                $this->clear();
                                return false;
@@ -177,7 +179,8 @@ class Block
        /**
         * Fill in member variables from a result wrapper
         */
-       function loadFromResult( ResultWrapper $res, $killExpired = true ) {
+       function loadFromResult( ResultWrapper $res, $killExpired = true ) 
+       {
                $ret = false;
                if ( 0 != $res->numRows() ) {
                        # Get first block
@@ -212,7 +215,7 @@ class Block
         * Search the database for any range blocks matching the given address, and
         * load the row if one is found.
         */
-       function loadRange( $address, $killExpired = true )
+       function loadRange( $address, $killExpired = true, $user = 0 )
        {
                $iaddr = IP::toHex( $address );
                if ( $iaddr === false ) {
@@ -231,6 +234,10 @@ class Block
                        "ipb_range_start <= '$iaddr'",
                        "ipb_range_end >= '$iaddr'"
                );
+               
+               if ( $user ) {
+                       $conds['ipb_anon_only'] = 0;
+               }
 
                $res = $db->resultObject( $db->select( 'ipblocks', '*', $conds, __METHOD__, $options ) );
                $success = $this->loadFromResult( $res, $killExpired );
@@ -239,14 +246,10 @@ class Block
 
        /**
         * Determine if a given integer IPv4 address is in a given CIDR network
+        * @deprecated Use IP::isInRange
         */
        function isAddressInRange( $addr, $range ) {
-               list( $network, $bits ) = wfParseCIDR( $range );
-               if ( $network !== false && $addr >> ( 32 - $bits ) == $network >> ( 32 - $bits ) ) {
-                       return true;
-               } else {
-                       return false;
-               }
+               return IP::isInRange( $addr, $range );
        }
 
        function initFromRow( $row )
@@ -259,6 +262,9 @@ class Block
                $this->mAuto = $row->ipb_auto;
                $this->mAnonOnly = $row->ipb_anon_only;
                $this->mCreateAccount = $row->ipb_create_account;
+               $this->mEnableAutoblock = $row->ipb_enable_autoblock;
+               $this->mBlockEmail = $row->ipb_block_email;
+               $this->mHideName = $row->ipb_deleted;
                $this->mId = $row->ipb_id;
                $this->mExpiry = self::decodeExpiry( $row->ipb_expiry );
                if ( isset( $row->user_name ) ) {
@@ -274,12 +280,9 @@ class Block
        {
                $this->mRangeStart = '';
                $this->mRangeEnd = '';
+
                if ( $this->mUser == 0 ) {
-                       list( $network, $bits ) = wfParseCIDR( $this->mAddress );
-                       if ( $network !== false ) {
-                               $this->mRangeStart = sprintf( '%08X', $network );
-                               $this->mRangeEnd = sprintf( '%08X', $network + (1 << (32 - $bits)) - 1 );
-                       }
+                       list( $this->mRangeStart, $this->mRangeEnd ) = IP::parseRange( $this->mAddress );
                }
        }
 
@@ -293,7 +296,7 @@ class Block
 
                $block = new Block();
                if ( $flags & Block::EB_FOR_UPDATE ) {
-                       $db =& wfGetDB( DB_MASTER );
+                       $db = wfGetDB( DB_MASTER );
                        if ( $wgAntiLockFlags & ALF_NO_BLOCK_LOCK ) {
                                $options = '';
                        } else {
@@ -301,7 +304,7 @@ class Block
                        }
                        $block->forUpdate( true );
                } else {
-                       $db =& wfGetDB( DB_SLAVE );
+                       $db = wfGetDB( DB_SLAVE );
                        $options = '';
                }
                if ( $flags & Block::EB_RANGE_ONLY ) {
@@ -312,7 +315,7 @@ class Block
 
                $now = wfTimestampNow();
 
-               extract( $db->tableNames( 'ipblocks', 'user' ) );
+               list( $ipblocks, $user ) = $db->tableNamesN( 'ipblocks', 'user' );
 
                $sql = "SELECT $ipblocks.*,user_name FROM $ipblocks,$user " .
                        "WHERE user_id=ipb_by $cond ORDER BY ipb_timestamp DESC $options";
@@ -335,7 +338,7 @@ class Block
                                call_user_func( $callback, $block, $tag );
                        }
                }
-               wfFreeResult( $res );
+               $db->freeResult( $res );
                return $num_rows;
        }
 
@@ -348,25 +351,34 @@ class Block
                        throw new MWException( "Block::delete() now requires that the mId member be filled\n" );
                }
 
-               $dbw =& wfGetDB( DB_MASTER );
+               $dbw = wfGetDB( DB_MASTER );
                $dbw->delete( 'ipblocks', array( 'ipb_id' => $this->mId ), __METHOD__ );
                return $dbw->affectedRows() > 0;
        }
 
+       /**
+       * Insert a block into the block table.
+       *@return Whether or not the insertion was successful.
+       */
        function insert()
        {
                wfDebug( "Block::insert; timestamp {$this->mTimestamp}\n" );
-               $dbw =& wfGetDB( DB_MASTER );
-               $dbw->begin();
+               $dbw = wfGetDB( DB_MASTER );
 
                # Unset ipb_anon_only for user blocks, makes no sense
                if ( $this->mUser ) {
                        $this->mAnonOnly = 0;
                }
 
+               # Unset ipb_enable_autoblock for IP blocks, makes no sense
+               if ( !$this->mUser ) {
+                       $this->mEnableAutoblock = 0;
+                       $this->mBlockEmail = 0; //Same goes for email...
+               }
+
                # Don't collide with expired blocks
                Block::purgeExpired();
-               
+
                $ipb_id = $dbw->nextSequenceValue('ipblocks_ipb_id_val');
                $dbw->insert( 'ipblocks',
                        array(
@@ -379,16 +391,135 @@ class Block
                                'ipb_auto' => $this->mAuto,
                                'ipb_anon_only' => $this->mAnonOnly,
                                'ipb_create_account' => $this->mCreateAccount,
+                               'ipb_enable_autoblock' => $this->mEnableAutoblock,
                                'ipb_expiry' => self::encodeExpiry( $this->mExpiry, $dbw ),
                                'ipb_range_start' => $this->mRangeStart,
                                'ipb_range_end' => $this->mRangeEnd,
+                               'ipb_deleted'   => $this->mHideName,
+                               'ipb_block_email' => $this->mBlockEmail
                        ), 'Block::insert', array( 'IGNORE' )
                );
                $affected = $dbw->affectedRows();
                $dbw->commit();
+
+               if ($affected)
+                       $this->doRetroactiveAutoblock();
+
                return $affected;
        }
 
+       /**
+       * Retroactively autoblocks the last IP used by the user (if it is a user)
+       * blocked by this Block.
+       *@return Whether or not a retroactive autoblock was made.
+       */
+       function doRetroactiveAutoblock() {
+               $dbr = wfGetDB( DB_SLAVE );
+               #If autoblock is enabled, autoblock the LAST IP used
+               # - stolen shamelessly from CheckUser_body.php
+
+               if ($this->mEnableAutoblock && $this->mUser) {
+                       wfDebug("Doing retroactive autoblocks for " . $this->mAddress . "\n");
+
+                       $row = $dbr->selectRow( 'recentchanges', array( 'rc_ip' ), array( 'rc_user_text' => $this->mAddress ),
+                               __METHOD__ , array( 'ORDER BY' => 'rc_timestamp DESC' ) );
+
+                       if ( !$row || !$row->rc_ip ) {
+                               #No results, don't autoblock anything
+                               wfDebug("No IP found to retroactively autoblock\n");
+                       } else {
+                               #Limit is 1, so no loop needed.
+                               $retroblockip = $row->rc_ip;
+                               return $this->doAutoblock( $retroblockip, true );
+                       }
+               }
+       }
+
+       /**
+       * Autoblocks the given IP, referring to this Block.
+       * @param string $autoblockip The IP to autoblock.
+       * @param bool $justInserted The main block was just inserted
+       * @return bool Whether or not an autoblock was inserted.
+       */
+       function doAutoblock( $autoblockip, $justInserted = false ) {
+               # If autoblocks are disabled, go away.
+               if ( !$this->mEnableAutoblock ) {
+                       return;
+               }
+
+               # Check for presence on the autoblock whitelist
+               # TODO cache this?
+               $lines = explode( "\n", wfMsgForContentNoTrans( 'autoblock_whitelist' ) );
+
+               $ip = $autoblockip;
+
+               wfDebug("Checking the autoblock whitelist..\n");
+
+               foreach( $lines as $line ) {
+                       # List items only
+                       if ( substr( $line, 0, 1 ) !== '*' ) {
+                               continue;
+                       }
+
+                       $wlEntry = substr($line, 1);
+                       $wlEntry = trim($wlEntry);
+
+                       wfDebug("Checking $ip against $wlEntry...");
+
+                       # Is the IP in this range?
+                       if (IP::isInRange( $ip, $wlEntry )) {
+                               wfDebug(" IP $ip matches $wlEntry, not autoblocking\n");
+                               #$autoblockip = null; # Don't autoblock a whitelisted IP.
+                               return; #This /SHOULD/ introduce a dummy block - but
+                                       # I don't know a safe way to do so. -werdna
+                       } else {
+                               wfDebug( " No match\n" );
+                       }
+               }
+
+               # It's okay to autoblock. Go ahead and create/insert the block.
+
+               $ipblock = Block::newFromDB( $autoblockip );
+               if ( $ipblock ) {
+                       # If the user is already blocked. Then check if the autoblock would
+                       # exceed the user block. If it would exceed, then do nothing, else
+                       # prolong block time
+                       if ($this->mExpiry &&
+                       ($this->mExpiry < Block::getAutoblockExpiry($ipblock->mTimestamp))) {
+                               return;
+                       }
+                       # Just update the timestamp
+                       if ( !$justInserted ) {
+                               $ipblock->updateTimestamp();
+                       }
+                       return;
+               } else {
+                       $ipblock = new Block;
+               }
+
+               # Make a new block object with the desired properties
+               wfDebug( "Autoblocking {$this->mAddress}@" . $autoblockip . "\n" );
+               $ipblock->mAddress = $autoblockip;
+               $ipblock->mUser = 0;
+               $ipblock->mBy = $this->mBy;
+               $ipblock->mReason = wfMsgForContent( 'autoblocker', $this->mAddress, $this->mReason );
+               $ipblock->mTimestamp = wfTimestampNow();
+               $ipblock->mAuto = 1;
+               $ipblock->mCreateAccount = $this->mCreateAccount;
+               # Continue suppressing the name if needed
+               $ipblock->mHideName = $this->mHideName;
+
+               # If the user is already blocked with an expiry date, we don't
+               # want to pile on top of that!
+               if($this->mExpiry) {
+                       $ipblock->mExpiry = min ( $this->mExpiry, Block::getAutoblockExpiry( $this->mTimestamp ));
+               } else {
+                       $ipblock->mExpiry = Block::getAutoblockExpiry( $this->mTimestamp );
+               }
+               # Insert it
+               return $ipblock->insert();
+       }
+
        function deleteIfExpired()
        {
                $fname = 'Block::deleteIfExpired';
@@ -426,7 +557,7 @@ class Block
                        $this->mTimestamp = wfTimestamp();
                        $this->mExpiry = Block::getAutoblockExpiry( $this->mTimestamp );
 
-                       $dbw =& wfGetDB( DB_MASTER );
+                       $dbw = wfGetDB( DB_MASTER );
                        $dbw->update( 'ipblocks',
                                array( /* SET */
                                        'ipb_timestamp' => $dbw->timestamp($this->mTimestamp),
@@ -449,6 +580,16 @@ class Block
                return $this->mNetworkBits;
        }*/
 
+       /**
+        * @return The blocker user ID.
+        */
+       public function getBy() {
+               return $this->mBy;
+       }
+
+       /**
+        * @return The blocker user name.
+        */
        function getByName()
        {
                if ( $this->mByName === false ) {
@@ -487,11 +628,11 @@ class Block
        /** 
         * Decode expiry which has come from the DB
         */
-       static function decodeExpiry( $expiry ) {
+       static function decodeExpiry( $expiry, $timestampType = TS_MW ) {
                if ( $expiry == '' || $expiry == Block::infinity() ) {
                        return Block::infinity();
                } else {
-                       return wfTimestamp( TS_MW, $expiry );
+                       return wfTimestamp( $timestampType, $expiry );
                }
        }
        
@@ -500,16 +641,36 @@ class Block
                global $wgAutoblockExpiry;
                return wfTimestamp( TS_MW, wfTimestamp( TS_UNIX, $timestamp ) + $wgAutoblockExpiry );
        }
-
-       static function normaliseRange( $range )
-       {
+       
+       /** 
+        * Gets rid of uneeded numbers in quad-dotted/octet IP strings
+        * For example, 127.111.113.151/24 -> 127.111.113.0/24
+        */
+       static function normaliseRange( $range ) {
                $parts = explode( '/', $range );
                if ( count( $parts ) == 2 ) {
-                       $shift = 32 - $parts[1];
-                       $ipint = IP::toUnsigned( $parts[0] );
-                       $ipint = $ipint >> $shift << $shift;
-                       $newip = long2ip( $ipint );
-                       $range = "$newip/{$parts[1]}";
+                       // IPv6
+                       if ( IP::isIPv6($range) && $parts[1] >= 64 && $parts[1] <= 128 ) {
+                               $bits = $parts[1];
+                               $ipint = IP::toUnsigned6( $parts[0] );
+                               # Native 32 bit functions WONT work here!!!
+                               # Convert to a padded binary number
+                               $network = wfBaseConvert( $ipint, 10, 2, 128 );
+                               # Truncate the last (128-$bits) bits and replace them with zeros
+                               $network = str_pad( substr( $network, 0, $bits ), 128, 0, STR_PAD_RIGHT );
+                               # Convert back to an integer
+                               $network = wfBaseConvert( $network, 2, 10 );
+                               # Reform octet address
+                               $newip = IP::toOctet( $network );
+                               $range = "$newip/{$parts[1]}";
+                       } // IPv4
+                       else if ( IP::isIPv4($range) && $parts[1] >= 16 && $parts[1] <= 32 ) {
+                               $shift = 32 - $parts[1];
+                               $ipint = IP::toUnsigned( $parts[0] );
+                               $ipint = $ipint >> $shift << $shift;
+                               $newip = long2ip( $ipint );
+                               $range = "$newip/{$parts[1]}";
+                       }
                }
                return $range;
        }
@@ -518,7 +679,7 @@ class Block
         * Purge expired blocks from the ipblocks table
         */
        static function purgeExpired() {
-               $dbw =& wfGetDB( DB_MASTER );
+               $dbw = wfGetDB( DB_MASTER );
                $dbw->delete( 'ipblocks', array( 'ipb_expiry < ' . $dbw->addQuotes( $dbw->timestamp() ) ), __METHOD__ );
        }
 
@@ -530,7 +691,7 @@ class Block
                /*
                static $infinity;
                if ( !isset( $infinity ) ) {
-                       $dbr =& wfGetDB( DB_SLAVE );
+                       $dbr = wfGetDB( DB_SLAVE );
                        $infinity = $dbr->bigTimestamp();
                }
                return $infinity;
@@ -538,4 +699,4 @@ class Block
        }
 
 }
-?>
+