MediaWiki  1.30.0
SpamRegexBatch.php
Go to the documentation of this file.
1 <?php
2 
17  static function buildRegexes( $lines, BaseBlacklist $blacklist, $batchSize=4096 ) {
18  # Make regex
19  # It's faster using the S modifier even though it will usually only be run once
20  // $regex = 'https?://+[a-z0-9_\-.]*(' . implode( '|', $lines ) . ')';
21  // return '/' . str_replace( '/', '\/', preg_replace('|\\\*/|', '/', $regex) ) . '/Sim';
22  $regexes = [];
23  $regexStart = $blacklist->getRegexStart();
24  $regexEnd = $blacklist->getRegexEnd( $batchSize );
25  $build = false;
26  foreach ( $lines as $line ) {
27  if ( substr( $line, -1, 1 ) == "\\" ) {
28  // Final \ will break silently on the batched regexes.
29  // Skip it here to avoid breaking the next line;
30  // warnings from getBadLines() will still trigger on
31  // edit to keep new ones from floating in.
32  continue;
33  }
34  // FIXME: not very robust size check, but should work. :)
35  if ( $build === false ) {
36  $build = $line;
37  } elseif ( strlen( $build ) + strlen( $line ) > $batchSize ) {
38  $regexes[] = $regexStart .
39  str_replace( '/', '\/', preg_replace( '|\\\*/|u', '/', $build ) ) .
40  $regexEnd;
41  $build = $line;
42  } else {
43  $build .= '|';
44  $build .= $line;
45  }
46  }
47  if ( $build !== false ) {
48  $regexes[] = $regexStart .
49  str_replace( '/', '\/', preg_replace( '|\\\*/|u', '/', $build ) ) .
50  $regexEnd;
51  }
52  return $regexes;
53  }
54 
61  static function validateRegexes( $regexes ) {
62  foreach ( $regexes as $regex ) {
64  $ok = preg_match( $regex, '' );
66 
67  if ( $ok === false ) {
68  return false;
69  }
70  }
71  return true;
72  }
73 
80  static function stripLines( $lines ) {
81  return array_filter(
82  array_map( 'trim',
83  preg_replace( '/#.*$/', '',
84  $lines ) ) );
85  }
86 
95  static function buildSafeRegexes( $lines, BaseBlacklist $blacklist, $fileName=false ) {
97  $regexes = self::buildRegexes( $lines, $blacklist );
98  if ( self::validateRegexes( $regexes ) ) {
99  return $regexes;
100  } else {
101  // _Something_ broke... rebuild line-by-line; it'll be
102  // slower if there's a lot of blacklist lines, but one
103  // broken line won't take out hundreds of its brothers.
104  if ( $fileName ) {
105  wfDebugLog( 'SpamBlacklist', "Spam blacklist warning: bogus line in $fileName\n" );
106  }
107  return self::buildRegexes( $lines, $blacklist, 0 );
108  }
109  }
110 
118  static function getBadLines( $lines, BaseBlacklist $blacklist ) {
120 
121  $badLines = [];
122  foreach ( $lines as $line ) {
123  if ( substr( $line, -1, 1 ) == "\\" ) {
124  // Final \ will break silently on the batched regexes.
125  $badLines[] = $line;
126  }
127  }
128 
129  $regexes = self::buildRegexes( $lines, $blacklist );
130  if ( self::validateRegexes( $regexes ) ) {
131  // No other problems!
132  return $badLines;
133  }
134 
135  // Something failed in the batch, so check them one by one.
136  foreach ( $lines as $line ) {
137  $regexes = self::buildRegexes( [ $line ], $blacklist );
138  if ( !self::validateRegexes( $regexes ) ) {
139  $badLines[] = $line;
140  }
141  }
142  return $badLines;
143  }
144 
154  static function regexesFromText( $source, BaseBlacklist $blacklist, $fileName=false ) {
155  $lines = explode( "\n", $source );
156  return self::buildSafeRegexes( $lines, $blacklist, $fileName );
157  }
158 
167  static function regexesFromMessage( $message, BaseBlacklist $blacklist ) {
168  $source = wfMessage( $message )->inContentLanguage();
169  if ( !$source->isDisabled() ) {
170  return self::regexesFromText( $source->plain(), $blacklist );
171  } else {
172  return [];
173  }
174  }
175 }
BaseBlacklist\getRegexEnd
getRegexEnd( $batchSize)
Returns the end of the regex for matches.
Definition: BaseBlacklist.php:411
$regexes
if( $wgSpamBlacklistFiles) $regexes
Definition: cleanup.php:88
SpamRegexBatch\stripLines
static stripLines( $lines)
Strip comments and whitespace, then remove blanks.
Definition: SpamRegexBatch.php:80
wfSuppressWarnings
wfSuppressWarnings( $end=false)
Reference-counted warning suppression.
Definition: GlobalFunctions.php:2020
SpamRegexBatch\getBadLines
static getBadLines( $lines, BaseBlacklist $blacklist)
Returns an array of invalid lines.
Definition: SpamRegexBatch.php:118
SpamRegexBatch\regexesFromText
static regexesFromText( $source, BaseBlacklist $blacklist, $fileName=false)
Build a set of regular expressions from the given multiline input text, with empty lines and comments...
Definition: SpamRegexBatch.php:154
wfDebugLog
wfDebugLog( $logGroup, $text, $dest='all', array $context=[])
Send a line to a supplementary debug log file, if configured, or main debug log if not.
Definition: GlobalFunctions.php:1140
php
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency which acts as the top level factory for services in MediaWiki which can be used to gain access to default instances of various services MediaWikiServices however also allows new services to be defined and default services to be redefined Services are defined or redefined by providing a callback the instantiator that will return a new instance of the service When it will create an instance of MediaWikiServices and populate it with the services defined in the files listed by thereby bootstrapping the DI framework Per $wgServiceWiringFiles lists includes ServiceWiring php
Definition: injection.txt:35
SpamRegexBatch\validateRegexes
static validateRegexes( $regexes)
Confirm that a set of regexes is either empty or valid.
Definition: SpamRegexBatch.php:61
wfRestoreWarnings
wfRestoreWarnings()
Definition: GlobalFunctions.php:2028
BaseBlacklist
Base class for different kinds of blacklists.
Definition: BaseBlacklist.php:6
$lines
$lines
Definition: router.php:67
SpamRegexBatch\regexesFromMessage
static regexesFromMessage( $message, BaseBlacklist $blacklist)
Build a set of regular expressions from a MediaWiki message.
Definition: SpamRegexBatch.php:167
SpamRegexBatch
Utility class for working with blacklists.
Definition: SpamRegexBatch.php:6
$line
$line
Definition: cdb.php:58
SpamRegexBatch\buildSafeRegexes
static buildSafeRegexes( $lines, BaseBlacklist $blacklist, $fileName=false)
Do a sanity check on the batch regex.
Definition: SpamRegexBatch.php:95
as
This document is intended to provide useful advice for parties seeking to redistribute MediaWiki to end users It s targeted particularly at maintainers for Linux since it s been observed that distribution packages of MediaWiki often break We ve consistently had to recommend that users seeking support use official tarballs instead of their distribution s and this often solves whatever problem the user is having It would be nice if this could such as
Definition: distributors.txt:9
$source
$source
Definition: mwdoc-filter.php:46
SpamRegexBatch\buildRegexes
static buildRegexes( $lines, BaseBlacklist $blacklist, $batchSize=4096)
Build a set of regular expressions matching URLs with the list of regex fragments.
Definition: SpamRegexBatch.php:17
wfMessage
either a unescaped string or a HtmlArmor object after in associative array form externallinks including delete and has completed for all link tables whether this was an auto creation default is conds Array Extra conditions for the No matching items in log is displayed if loglist is empty msgKey Array If you want a nice box with a set this to the key of the message First element is the message additional optional elements are parameters for the key that are processed with wfMessage() -> params() ->parseAsBlock() - offset Set to overwrite offset parameter in $wgRequest set to '' to unset offset - wrap String Wrap the message in html(usually something like "&lt
BaseBlacklist\getRegexStart
getRegexStart()
Returns the start of the regex for matches.
Definition: BaseBlacklist.php:401