886 lines
24 KiB
PHP
886 lines
24 KiB
PHP
<?php
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/**
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* @file
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* Blocks and bans object
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*/
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/**
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* The block class
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* All the functions in this class assume the object is either explicitly
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* loaded or filled. It is not load-on-demand. There are no accessors.
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*
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* Globals used: $wgAutoblockExpiry, $wgAntiLockFlags
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*
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* @todo This could be used everywhere, but it isn't.
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*/
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class Block {
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/* public*/ var $mAddress, $mUser, $mBy, $mReason, $mTimestamp, $mAuto, $mId, $mExpiry,
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$mRangeStart, $mRangeEnd, $mAnonOnly, $mEnableAutoblock, $mHideName,
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$mBlockEmail, $mByName, $mAngryAutoblock, $mAllowUsertalk;
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/* private */ var $mNetworkBits, $mIntegerAddr, $mForUpdate, $mFromMaster;
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const EB_KEEP_EXPIRED = 1;
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const EB_FOR_UPDATE = 2;
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const EB_RANGE_ONLY = 4;
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function __construct( $address = '', $user = 0, $by = 0, $reason = '',
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$timestamp = '' , $auto = 0, $expiry = '', $anonOnly = 0, $createAccount = 0, $enableAutoblock = 0,
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$hideName = 0, $blockEmail = 0, $allowUsertalk = 0 )
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{
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$this->mId = 0;
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# Expand valid IPv6 addresses
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$address = IP::sanitizeIP( $address );
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$this->mAddress = $address;
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$this->mUser = $user;
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$this->mBy = $by;
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$this->mReason = $reason;
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$this->mTimestamp = wfTimestamp( TS_MW, $timestamp );
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$this->mAuto = $auto;
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$this->mAnonOnly = $anonOnly;
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$this->mCreateAccount = $createAccount;
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$this->mExpiry = self::decodeExpiry( $expiry );
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$this->mEnableAutoblock = $enableAutoblock;
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$this->mHideName = $hideName;
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$this->mBlockEmail = $blockEmail;
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$this->mAllowUsertalk = $allowUsertalk;
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$this->mForUpdate = false;
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$this->mFromMaster = false;
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$this->mByName = false;
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$this->mAngryAutoblock = false;
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$this->initialiseRange();
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}
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/**
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* Load a block from the database, using either the IP address or
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* user ID. Tries the user ID first, and if that doesn't work, tries
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* the address.
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*
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* @param $address String: IP address of user/anon
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* @param $user Integer: user id of user
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* @param $killExpired Boolean: delete expired blocks on load
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* @return Block Object
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*/
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public static function newFromDB( $address, $user = 0, $killExpired = true ) {
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$block = new Block;
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$block->load( $address, $user, $killExpired );
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if ( $block->isValid() ) {
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return $block;
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} else {
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return null;
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}
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}
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/**
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* Load a blocked user from their block id.
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*
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* @param $id Integer: Block id to search for
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* @return Block object
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*/
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public static function newFromID( $id ) {
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$dbr = wfGetDB( DB_SLAVE );
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$res = $dbr->resultObject( $dbr->select( 'ipblocks', '*',
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array( 'ipb_id' => $id ), __METHOD__ ) );
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$block = new Block;
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if ( $block->loadFromResult( $res ) ) {
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return $block;
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} else {
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return null;
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}
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}
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/**
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* Check if two blocks are effectively equal
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*
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* @return Boolean
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*/
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public function equals( Block $block ) {
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return (
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$this->mAddress == $block->mAddress
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&& $this->mUser == $block->mUser
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&& $this->mAuto == $block->mAuto
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&& $this->mAnonOnly == $block->mAnonOnly
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&& $this->mCreateAccount == $block->mCreateAccount
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&& $this->mExpiry == $block->mExpiry
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&& $this->mEnableAutoblock == $block->mEnableAutoblock
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&& $this->mHideName == $block->mHideName
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&& $this->mBlockEmail == $block->mBlockEmail
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&& $this->mAllowUsertalk == $block->mAllowUsertalk
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&& $this->mReason == $block->mReason
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);
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}
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/**
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* Clear all member variables in the current object. Does not clear
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* the block from the DB.
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*/
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public function clear() {
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$this->mAddress = $this->mReason = $this->mTimestamp = '';
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$this->mId = $this->mAnonOnly = $this->mCreateAccount =
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$this->mEnableAutoblock = $this->mAuto = $this->mUser =
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$this->mBy = $this->mHideName = $this->mBlockEmail = $this->mAllowUsertalk = 0;
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$this->mByName = false;
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}
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/**
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* Get the DB object and set the reference parameter to the select options.
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* The options array will contain FOR UPDATE if appropriate.
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*
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* @param $options Array
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* @return Database
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*/
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protected function &getDBOptions( &$options ) {
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global $wgAntiLockFlags;
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if ( $this->mForUpdate || $this->mFromMaster ) {
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$db = wfGetDB( DB_MASTER );
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if ( !$this->mForUpdate || ( $wgAntiLockFlags & ALF_NO_BLOCK_LOCK ) ) {
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$options = array();
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} else {
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$options = array( 'FOR UPDATE' );
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}
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} else {
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$db = wfGetDB( DB_SLAVE );
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$options = array();
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}
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return $db;
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}
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/**
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* Get a block from the DB, with either the given address or the given username
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*
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* @param $address string The IP address of the user, or blank to skip IP blocks
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* @param $user int The user ID, or zero for anonymous users
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* @param $killExpired bool Whether to delete expired rows while loading
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* @return Boolean: the user is blocked from editing
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*
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*/
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public function load( $address = '', $user = 0, $killExpired = true ) {
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wfDebug( "Block::load: '$address', '$user', $killExpired\n" );
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$options = array();
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$db =& $this->getDBOptions( $options );
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if ( 0 == $user && $address == '' ) {
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# Invalid user specification, not blocked
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$this->clear();
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return false;
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}
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# Try user block
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if ( $user ) {
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$res = $db->resultObject( $db->select( 'ipblocks', '*', array( 'ipb_user' => $user ),
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__METHOD__, $options ) );
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if ( $this->loadFromResult( $res, $killExpired ) ) {
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return true;
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}
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}
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# Try IP block
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# TODO: improve performance by merging this query with the autoblock one
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# Slightly tricky while handling killExpired as well
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if ( $address ) {
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$conds = array( 'ipb_address' => $address, 'ipb_auto' => 0 );
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$res = $db->resultObject( $db->select( 'ipblocks', '*', $conds, __METHOD__, $options ) );
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if ( $this->loadFromResult( $res, $killExpired ) ) {
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if ( $user && $this->mAnonOnly ) {
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# Block is marked anon-only
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# Whitelist this IP address against autoblocks and range blocks
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# (but not account creation blocks -- bug 13611)
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if ( !$this->mCreateAccount ) {
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$this->clear();
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}
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return false;
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} else {
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return true;
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}
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}
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}
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# Try range block
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if ( $this->loadRange( $address, $killExpired, $user ) ) {
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if ( $user && $this->mAnonOnly ) {
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# Respect account creation blocks on logged-in users -- bug 13611
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if ( !$this->mCreateAccount ) {
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$this->clear();
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}
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return false;
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} else {
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return true;
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}
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}
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# Try autoblock
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if ( $address ) {
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$conds = array( 'ipb_address' => $address, 'ipb_auto' => 1 );
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if ( $user ) {
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$conds['ipb_anon_only'] = 0;
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}
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$res = $db->resultObject( $db->select( 'ipblocks', '*', $conds, __METHOD__, $options ) );
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if ( $this->loadFromResult( $res, $killExpired ) ) {
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return true;
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}
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}
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# Give up
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$this->clear();
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return false;
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}
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/**
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* Fill in member variables from a result wrapper
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*
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* @param $res ResultWrapper: row from the ipblocks table
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* @param $killExpired Boolean: whether to delete expired rows while loading
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* @return Boolean
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*/
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protected function loadFromResult( ResultWrapper $res, $killExpired = true ) {
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$ret = false;
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if ( 0 != $res->numRows() ) {
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# Get first block
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$row = $res->fetchObject();
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$this->initFromRow( $row );
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if ( $killExpired ) {
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# If requested, delete expired rows
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do {
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$killed = $this->deleteIfExpired();
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if ( $killed ) {
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$row = $res->fetchObject();
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if ( $row ) {
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$this->initFromRow( $row );
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}
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}
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} while ( $killed && $row );
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# If there were any left after the killing finished, return true
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if ( $row ) {
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$ret = true;
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}
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} else {
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$ret = true;
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}
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}
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$res->free();
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return $ret;
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}
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/**
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* Search the database for any range blocks matching the given address, and
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* load the row if one is found.
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*
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* @param $address String: IP address range
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* @param $killExpired Boolean: whether to delete expired rows while loading
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* @param $userid Integer: if not 0, then sets ipb_anon_only
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* @return Boolean
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*/
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public function loadRange( $address, $killExpired = true, $user = 0 ) {
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$iaddr = IP::toHex( $address );
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if ( $iaddr === false ) {
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# Invalid address
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return false;
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}
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# Only scan ranges which start in this /16, this improves search speed
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# Blocks should not cross a /16 boundary.
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$range = substr( $iaddr, 0, 4 );
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$options = array();
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$db =& $this->getDBOptions( $options );
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$conds = array(
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'ipb_range_start' . $db->buildLike( $range, $db->anyString() ),
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"ipb_range_start <= '$iaddr'",
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"ipb_range_end >= '$iaddr'"
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);
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if ( $user ) {
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$conds['ipb_anon_only'] = 0;
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}
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$res = $db->resultObject( $db->select( 'ipblocks', '*', $conds, __METHOD__, $options ) );
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$success = $this->loadFromResult( $res, $killExpired );
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return $success;
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}
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/**
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* Given a database row from the ipblocks table, initialize
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* member variables
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*
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* @param $row ResultWrapper: a row from the ipblocks table
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*/
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public function initFromRow( $row ) {
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$this->mAddress = $row->ipb_address;
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$this->mReason = $row->ipb_reason;
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$this->mTimestamp = wfTimestamp( TS_MW, $row->ipb_timestamp );
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$this->mUser = $row->ipb_user;
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$this->mBy = $row->ipb_by;
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$this->mAuto = $row->ipb_auto;
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$this->mAnonOnly = $row->ipb_anon_only;
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$this->mCreateAccount = $row->ipb_create_account;
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$this->mEnableAutoblock = $row->ipb_enable_autoblock;
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$this->mBlockEmail = $row->ipb_block_email;
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$this->mAllowUsertalk = $row->ipb_allow_usertalk;
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$this->mHideName = $row->ipb_deleted;
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$this->mId = $row->ipb_id;
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$this->mExpiry = self::decodeExpiry( $row->ipb_expiry );
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if ( isset( $row->user_name ) ) {
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$this->mByName = $row->user_name;
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} else {
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$this->mByName = $row->ipb_by_text;
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}
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$this->mRangeStart = $row->ipb_range_start;
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$this->mRangeEnd = $row->ipb_range_end;
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}
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/**
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* Once $mAddress has been set, get the range they came from.
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* Wrapper for IP::parseRange
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*/
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protected function initialiseRange() {
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$this->mRangeStart = '';
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$this->mRangeEnd = '';
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if ( $this->mUser == 0 ) {
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list( $this->mRangeStart, $this->mRangeEnd ) = IP::parseRange( $this->mAddress );
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}
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}
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/**
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* Delete the row from the IP blocks table.
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*
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* @return Boolean
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*/
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public function delete() {
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if ( wfReadOnly() ) {
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return false;
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}
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if ( !$this->mId ) {
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throw new MWException( "Block::delete() now requires that the mId member be filled\n" );
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}
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$dbw = wfGetDB( DB_MASTER );
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$dbw->delete( 'ipblocks', array( 'ipb_id' => $this->mId ), __METHOD__ );
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return $dbw->affectedRows() > 0;
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}
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/**
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* Insert a block into the block table. Will fail if there is a conflicting
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* block (same name and options) already in the database.
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*
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* @return Boolean: whether or not the insertion was successful.
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*/
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public function insert() {
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wfDebug( "Block::insert; timestamp {$this->mTimestamp}\n" );
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$dbw = wfGetDB( DB_MASTER );
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$this->validateBlockParams();
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$this->initialiseRange();
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# Don't collide with expired blocks
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Block::purgeExpired();
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$ipb_id = $dbw->nextSequenceValue( 'ipblocks_ipb_id_seq' );
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$dbw->insert(
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'ipblocks',
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array(
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'ipb_id' => $ipb_id,
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'ipb_address' => $this->mAddress,
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'ipb_user' => $this->mUser,
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'ipb_by' => $this->mBy,
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'ipb_by_text' => $this->mByName,
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'ipb_reason' => $this->mReason,
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'ipb_timestamp' => $dbw->timestamp( $this->mTimestamp ),
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'ipb_auto' => $this->mAuto,
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'ipb_anon_only' => $this->mAnonOnly,
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'ipb_create_account' => $this->mCreateAccount,
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'ipb_enable_autoblock' => $this->mEnableAutoblock,
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'ipb_expiry' => self::encodeExpiry( $this->mExpiry, $dbw ),
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'ipb_range_start' => $this->mRangeStart,
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'ipb_range_end' => $this->mRangeEnd,
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'ipb_deleted' => $this->mHideName,
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'ipb_block_email' => $this->mBlockEmail,
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'ipb_allow_usertalk' => $this->mAllowUsertalk
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),
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'Block::insert',
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array( 'IGNORE' )
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);
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$affected = $dbw->affectedRows();
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if ( $affected )
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$this->doRetroactiveAutoblock();
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return (bool)$affected;
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}
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/**
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* Update a block in the DB with new parameters.
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* The ID field needs to be loaded first.
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*/
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public function update() {
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wfDebug( "Block::update; timestamp {$this->mTimestamp}\n" );
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$dbw = wfGetDB( DB_MASTER );
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$this->validateBlockParams();
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$dbw->update(
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'ipblocks',
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array(
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'ipb_user' => $this->mUser,
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'ipb_by' => $this->mBy,
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'ipb_by_text' => $this->mByName,
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'ipb_reason' => $this->mReason,
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'ipb_timestamp' => $dbw->timestamp( $this->mTimestamp ),
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'ipb_auto' => $this->mAuto,
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'ipb_anon_only' => $this->mAnonOnly,
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'ipb_create_account' => $this->mCreateAccount,
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'ipb_enable_autoblock' => $this->mEnableAutoblock,
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'ipb_expiry' => self::encodeExpiry( $this->mExpiry, $dbw ),
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'ipb_range_start' => $this->mRangeStart,
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'ipb_range_end' => $this->mRangeEnd,
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'ipb_deleted' => $this->mHideName,
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'ipb_block_email' => $this->mBlockEmail,
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'ipb_allow_usertalk' => $this->mAllowUsertalk
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),
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array( 'ipb_id' => $this->mId ),
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'Block::update'
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);
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return $dbw->affectedRows();
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}
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/**
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* Make sure all the proper members are set to sane values
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* before adding/updating a block
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*/
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protected function validateBlockParams() {
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# Unset ipb_anon_only for user blocks, makes no sense
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if ( $this->mUser ) {
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$this->mAnonOnly = 0;
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}
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# Unset ipb_enable_autoblock for IP blocks, makes no sense
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if ( !$this->mUser ) {
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$this->mEnableAutoblock = 0;
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}
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# bug 18860: non-anon-only IP blocks should be allowed to block email
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if ( !$this->mUser && $this->mAnonOnly ) {
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$this->mBlockEmail = 0;
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}
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if ( !$this->mByName ) {
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if ( $this->mBy ) {
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$this->mByName = User::whoIs( $this->mBy );
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} else {
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global $wgUser;
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$this->mByName = $wgUser->getName();
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}
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}
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}
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/**
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* Retroactively autoblocks the last IP used by the user (if it is a user)
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* blocked by this Block.
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*
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* @return Boolean: whether or not a retroactive autoblock was made.
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*/
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public function doRetroactiveAutoblock() {
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$dbr = wfGetDB( DB_SLAVE );
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# If autoblock is enabled, autoblock the LAST IP used
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# - stolen shamelessly from CheckUser_body.php
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if ( $this->mEnableAutoblock && $this->mUser ) {
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wfDebug( "Doing retroactive autoblocks for " . $this->mAddress . "\n" );
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$options = array( 'ORDER BY' => 'rc_timestamp DESC' );
|
|
$conds = array( 'rc_user_text' => $this->mAddress );
|
|
|
|
if ( $this->mAngryAutoblock ) {
|
|
// Block any IP used in the last 7 days. Up to five IPs.
|
|
$conds[] = 'rc_timestamp < ' . $dbr->addQuotes( $dbr->timestamp( time() - ( 7 * 86400 ) ) );
|
|
$options['LIMIT'] = 5;
|
|
} else {
|
|
// Just the last IP used.
|
|
$options['LIMIT'] = 1;
|
|
}
|
|
|
|
$res = $dbr->select( 'recentchanges', array( 'rc_ip' ), $conds,
|
|
__METHOD__ , $options );
|
|
|
|
if ( !$dbr->numRows( $res ) ) {
|
|
# No results, don't autoblock anything
|
|
wfDebug( "No IP found to retroactively autoblock\n" );
|
|
} else {
|
|
while ( $row = $dbr->fetchObject( $res ) ) {
|
|
if ( $row->rc_ip )
|
|
$this->doAutoblock( $row->rc_ip );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Checks whether a given IP is on the autoblock whitelist.
|
|
*
|
|
* @param $ip String: The IP to check
|
|
* @return Boolean
|
|
*/
|
|
public static function isWhitelistedFromAutoblocks( $ip ) {
|
|
global $wgMemc;
|
|
|
|
// Try to get the autoblock_whitelist from the cache, as it's faster
|
|
// than getting the msg raw and explode()'ing it.
|
|
$key = wfMemcKey( 'ipb', 'autoblock', 'whitelist' );
|
|
$lines = $wgMemc->get( $key );
|
|
if ( !$lines ) {
|
|
$lines = explode( "\n", wfMsgForContentNoTrans( 'autoblock_whitelist' ) );
|
|
$wgMemc->set( $key, $lines, 3600 * 24 );
|
|
}
|
|
|
|
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" );
|
|
return true;
|
|
} else {
|
|
wfDebug( " No match\n" );
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Autoblocks the given IP, referring to this Block.
|
|
*
|
|
* @param $autoblockIP String: the IP to autoblock.
|
|
* @param $justInserted Boolean: the main block was just inserted
|
|
* @return Boolean: whether or not an autoblock was inserted.
|
|
*/
|
|
public function doAutoblock( $autoblockIP, $justInserted = false ) {
|
|
# If autoblocks are disabled, go away.
|
|
if ( !$this->mEnableAutoblock ) {
|
|
return;
|
|
}
|
|
|
|
# Check for presence on the autoblock whitelist
|
|
if ( Block::isWhitelistedFromAutoblocks( $autoblockIP ) ) {
|
|
return;
|
|
}
|
|
|
|
# # Allow hooks to cancel the autoblock.
|
|
if ( !wfRunHooks( 'AbortAutoblock', array( $autoblockIP, &$this ) ) ) {
|
|
wfDebug( "Autoblock aborted by hook.\n" );
|
|
return false;
|
|
}
|
|
|
|
# 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->mByName = $this->mByName;
|
|
$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;
|
|
$ipblock->mAllowUsertalk = $this->mAllowUsertalk;
|
|
# 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();
|
|
}
|
|
|
|
/**
|
|
* Check if a block has expired. Delete it if it is.
|
|
* @return Boolean
|
|
*/
|
|
public function deleteIfExpired() {
|
|
wfProfileIn( __METHOD__ );
|
|
if ( $this->isExpired() ) {
|
|
wfDebug( "Block::deleteIfExpired() -- deleting\n" );
|
|
$this->delete();
|
|
$retVal = true;
|
|
} else {
|
|
wfDebug( "Block::deleteIfExpired() -- not expired\n" );
|
|
$retVal = false;
|
|
}
|
|
wfProfileOut( __METHOD__ );
|
|
return $retVal;
|
|
}
|
|
|
|
/**
|
|
* Has the block expired?
|
|
* @return Boolean
|
|
*/
|
|
public function isExpired() {
|
|
wfDebug( "Block::isExpired() checking current " . wfTimestampNow() . " vs $this->mExpiry\n" );
|
|
if ( !$this->mExpiry ) {
|
|
return false;
|
|
} else {
|
|
return wfTimestampNow() > $this->mExpiry;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Is the block address valid (i.e. not a null string?)
|
|
* @return Boolean
|
|
*/
|
|
public function isValid() {
|
|
return $this->mAddress != '';
|
|
}
|
|
|
|
/**
|
|
* Update the timestamp on autoblocks.
|
|
*/
|
|
public function updateTimestamp() {
|
|
if ( $this->mAuto ) {
|
|
$this->mTimestamp = wfTimestamp();
|
|
$this->mExpiry = Block::getAutoblockExpiry( $this->mTimestamp );
|
|
|
|
$dbw = wfGetDB( DB_MASTER );
|
|
$dbw->update( 'ipblocks',
|
|
array( /* SET */
|
|
'ipb_timestamp' => $dbw->timestamp( $this->mTimestamp ),
|
|
'ipb_expiry' => $dbw->timestamp( $this->mExpiry ),
|
|
), array( /* WHERE */
|
|
'ipb_address' => $this->mAddress
|
|
), 'Block::updateTimestamp'
|
|
);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get the user id of the blocking sysop
|
|
*
|
|
* @return Integer
|
|
*/
|
|
public function getBy() {
|
|
return $this->mBy;
|
|
}
|
|
|
|
/**
|
|
* Get the username of the blocking sysop
|
|
*
|
|
* @return String
|
|
*/
|
|
public function getByName() {
|
|
return $this->mByName;
|
|
}
|
|
|
|
/**
|
|
* Get/set the SELECT ... FOR UPDATE flag
|
|
*/
|
|
public function forUpdate( $x = null ) {
|
|
return wfSetVar( $this->mForUpdate, $x );
|
|
}
|
|
|
|
/**
|
|
* Get/set a flag determining whether the master is used for reads
|
|
*/
|
|
public function fromMaster( $x = null ) {
|
|
return wfSetVar( $this->mFromMaster, $x );
|
|
}
|
|
|
|
/**
|
|
* Get the block name, but with autoblocked IPs hidden as per standard privacy policy
|
|
* @return String
|
|
*/
|
|
public function getRedactedName() {
|
|
if ( $this->mAuto ) {
|
|
return '#' . $this->mId;
|
|
} else {
|
|
return $this->mAddress;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Encode expiry for DB
|
|
*
|
|
* @param $expiry String: timestamp for expiry, or
|
|
* @param $db Database object
|
|
* @return String
|
|
*/
|
|
public static function encodeExpiry( $expiry, $db ) {
|
|
if ( $expiry == '' || $expiry == Block::infinity() ) {
|
|
return Block::infinity();
|
|
} else {
|
|
return $db->timestamp( $expiry );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Decode expiry which has come from the DB
|
|
*
|
|
* @param $expiry String: Database expiry format
|
|
* @param $timestampType Requested timestamp format
|
|
* @return String
|
|
*/
|
|
public static function decodeExpiry( $expiry, $timestampType = TS_MW ) {
|
|
if ( $expiry == '' || $expiry == Block::infinity() ) {
|
|
return Block::infinity();
|
|
} else {
|
|
return wfTimestamp( $timestampType, $expiry );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get a timestamp of the expiry for autoblocks
|
|
*
|
|
* @return String
|
|
*/
|
|
public static function getAutoblockExpiry( $timestamp ) {
|
|
global $wgAutoblockExpiry;
|
|
return wfTimestamp( TS_MW, wfTimestamp( TS_UNIX, $timestamp ) + $wgAutoblockExpiry );
|
|
}
|
|
|
|
/**
|
|
* Gets rid of uneeded numbers in quad-dotted/octet IP strings
|
|
* For example, 127.111.113.151/24 -> 127.111.113.0/24
|
|
* @param $range String: IP address to normalize
|
|
* @return string
|
|
*/
|
|
public static function normaliseRange( $range ) {
|
|
$parts = explode( '/', $range );
|
|
if ( count( $parts ) == 2 ) {
|
|
// IPv6
|
|
if ( IP::isIPv6( $range ) && $parts[1] >= 64 && $parts[1] <= 128 ) {
|
|
$bits = $parts[1];
|
|
$ipint = IP::toUnsigned6( $parts[0] );
|
|
# Native 32 bit functions WON'T 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
|
|
elseif ( 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;
|
|
}
|
|
|
|
/**
|
|
* Purge expired blocks from the ipblocks table
|
|
*/
|
|
public static function purgeExpired() {
|
|
$dbw = wfGetDB( DB_MASTER );
|
|
$dbw->delete( 'ipblocks', array( 'ipb_expiry < ' . $dbw->addQuotes( $dbw->timestamp() ) ), __METHOD__ );
|
|
}
|
|
|
|
/**
|
|
* Get a value to insert into expiry field of the database when infinite expiry
|
|
* is desired. In principle this could be DBMS-dependant, but currently all
|
|
* supported DBMS's support the string "infinity", so we just use that.
|
|
*
|
|
* @return String
|
|
*/
|
|
public static function infinity() {
|
|
# This is a special keyword for timestamps in PostgreSQL, and
|
|
# works with CHAR(14) as well because "i" sorts after all numbers.
|
|
return 'infinity';
|
|
}
|
|
|
|
/**
|
|
* Convert a DB-encoded expiry into a real string that humans can read.
|
|
*
|
|
* @param $encoded_expiry String: Database encoded expiry time
|
|
* @return Html-escaped String
|
|
*/
|
|
public static function formatExpiry( $encoded_expiry ) {
|
|
static $msg = null;
|
|
|
|
if ( is_null( $msg ) ) {
|
|
$msg = array();
|
|
$keys = array( 'infiniteblock', 'expiringblock' );
|
|
foreach ( $keys as $key ) {
|
|
$msg[$key] = wfMsgHtml( $key );
|
|
}
|
|
}
|
|
|
|
$expiry = Block::decodeExpiry( $encoded_expiry );
|
|
if ( $expiry == 'infinity' ) {
|
|
$expirystr = $msg['infiniteblock'];
|
|
} else {
|
|
global $wgLang;
|
|
$expiredatestr = htmlspecialchars( $wgLang->date( $expiry, true ) );
|
|
$expiretimestr = htmlspecialchars( $wgLang->time( $expiry, true ) );
|
|
$expirystr = wfMsgReplaceArgs( $msg['expiringblock'], array( $expiredatestr, $expiretimestr ) );
|
|
}
|
|
return $expirystr;
|
|
}
|
|
|
|
/**
|
|
* Convert a typed-in expiry time into something we can put into the database.
|
|
* @param $expiry_input String: whatever was typed into the form
|
|
* @return String: more database friendly
|
|
*/
|
|
public static function parseExpiryInput( $expiry_input ) {
|
|
if ( $expiry_input == 'infinite' || $expiry_input == 'indefinite' ) {
|
|
$expiry = 'infinity';
|
|
} else {
|
|
$expiry = strtotime( $expiry_input );
|
|
|
|
if ( $expiry < 0 || $expiry === false ) {
|
|
return false;
|
|
}
|
|
}
|
|
return $expiry;
|
|
}
|
|
|
|
}
|