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GlobalFunctions.php
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<?php
/**
* Global functions used everywhere.
*
* 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
*/
use
MediaWiki\Debug\MWDebug
;
use
MediaWiki\HookContainer\HookRunner
;
use
MediaWiki\Logger\LoggerFactory
;
use
MediaWiki\MediaWikiServices
;
use
MediaWiki\Message\Message
;
use
MediaWiki\ProcOpenError
;
use
MediaWiki\Registration\ExtensionRegistry
;
use
MediaWiki\Request\WebRequest
;
use
MediaWiki\Shell\Shell
;
use
MediaWiki\Title\Title
;
use
MediaWiki\Utils\MWTimestamp
;
use
MediaWiki\Utils\UrlUtils
;
use
Wikimedia\AtEase\AtEase
;
use
Wikimedia\FileBackend\FileBackend
;
use
Wikimedia\FileBackend\FSFile\TempFSFile
;
use
Wikimedia\Message\MessageSpecifier
;
use
Wikimedia\ParamValidator\TypeDef\ExpiryDef
;
use
Wikimedia\RequestTimeout\RequestTimeout
;
/**
* Load an extension
*
* This queues an extension to be loaded through
* the ExtensionRegistry system.
*
* @param string $ext Name of the extension to load
* @param string|null $path Absolute path of where to find the extension.json file
* @since 1.25
*/
function
wfLoadExtension
(
$ext
,
$path
=
null
)
{
if
(
!
$path
)
{
global
$wgExtensionDirectory
;
$path
=
"$wgExtensionDirectory/$ext/extension.json"
;
}
ExtensionRegistry
::
getInstance
()->
queue
(
$path
);
}
/**
* Load multiple extensions at once
*
* Same as wfLoadExtension, but more efficient if you
* are loading multiple extensions.
*
* If you want to specify custom paths, you should interact with
* ExtensionRegistry directly.
*
* @see wfLoadExtension
* @param string[] $exts Array of extension names to load
* @since 1.25
*/
function
wfLoadExtensions
(
array
$exts
)
{
global
$wgExtensionDirectory
;
$registry
=
ExtensionRegistry
::
getInstance
();
foreach
(
$exts
as
$ext
)
{
$registry
->
queue
(
"$wgExtensionDirectory/$ext/extension.json"
);
}
}
/**
* Load a skin
*
* @see wfLoadExtension
* @param string $skin Name of the extension to load
* @param string|null $path Absolute path of where to find the skin.json file
* @since 1.25
*/
function
wfLoadSkin
(
$skin
,
$path
=
null
)
{
if
(
!
$path
)
{
global
$wgStyleDirectory
;
$path
=
"$wgStyleDirectory/$skin/skin.json"
;
}
ExtensionRegistry
::
getInstance
()->
queue
(
$path
);
}
/**
* Load multiple skins at once
*
* @see wfLoadExtensions
* @param string[] $skins Array of extension names to load
* @since 1.25
*/
function
wfLoadSkins
(
array
$skins
)
{
global
$wgStyleDirectory
;
$registry
=
ExtensionRegistry
::
getInstance
();
foreach
(
$skins
as
$skin
)
{
$registry
->
queue
(
"$wgStyleDirectory/$skin/skin.json"
);
}
}
/**
* Like array_diff( $arr1, $arr2 ) except that it works with two-dimensional arrays.
* @deprecated since 1.43 Use StatusValue::merge() instead
* @param string[]|array[] $arr1
* @param string[]|array[] $arr2
* @return array
*/
function
wfArrayDiff2
(
$arr1
,
$arr2
)
{
wfDeprecated
(
__FUNCTION__
,
'1.43'
);
/**
* @param string|array $a
* @param string|array $b
*/
$comparator
=
static
function
(
$a
,
$b
):
int
{
if
(
is_string
(
$a
)
&&
is_string
(
$b
)
)
{
return
strcmp
(
$a
,
$b
);
}
if
(
!
is_array
(
$a
)
&&
!
is_array
(
$b
)
)
{
throw
new
InvalidArgumentException
(
'This function assumes that array elements are all strings or all arrays'
);
}
if
(
count
(
$a
)
!==
count
(
$b
)
)
{
return
count
(
$a
)
<=>
count
(
$b
);
}
else
{
reset
(
$a
);
reset
(
$b
);
while
(
key
(
$a
)
!==
null
&&
key
(
$b
)
!==
null
)
{
$valueA
=
current
(
$a
);
$valueB
=
current
(
$b
);
$cmp
=
strcmp
(
$valueA
,
$valueB
);
if
(
$cmp
!==
0
)
{
return
$cmp
;
}
next
(
$a
);
next
(
$b
);
}
return
0
;
}
};
return
array_udiff
(
$arr1
,
$arr2
,
$comparator
);
}
/**
* Merge arrays in the style of PermissionManager::getPermissionErrors, with duplicate removal
* e.g.
* wfMergeErrorArrays(
* [ [ 'x' ] ],
* [ [ 'x', '2' ] ],
* [ [ 'x' ] ],
* [ [ 'y' ] ]
* );
* returns:
* [
* [ 'x', '2' ],
* [ 'x' ],
* [ 'y' ]
* ]
*
* @deprecated since 1.43 Use StatusValue::merge() instead
* @param array[] ...$args
* @return array
*/
function
wfMergeErrorArrays
(
...
$args
)
{
wfDeprecated
(
__FUNCTION__
,
'1.43'
);
$out
=
[];
foreach
(
$args
as
$errors
)
{
foreach
(
$errors
as
$params
)
{
$originalParams
=
$params
;
if
(
$params
[
0
]
instanceof
MessageSpecifier
)
{
$params
=
[
$params
[
0
]->
getKey
(),
...
$params
[
0
]->
getParams
()
];
}
# @todo FIXME: Sometimes get nested arrays for $params,
# which leads to E_NOTICEs
$spec
=
implode
(
"
\t
"
,
$params
);
$out
[
$spec
]
=
$originalParams
;
}
}
return
array_values
(
$out
);
}
/**
* Insert an array into another array after the specified key. If the key is
* not present in the input array, it is returned without modification.
*
* @param array $array
* @param array $insert The array to insert.
* @param mixed $after The key to insert after.
* @return array
*/
function
wfArrayInsertAfter
(
array
$array
,
array
$insert
,
$after
)
{
// Find the offset of the element to insert after.
$keys
=
array_keys
(
$array
);
$offsetByKey
=
array_flip
(
$keys
);
if
(
!
\array_key_exists
(
$after
,
$offsetByKey
)
)
{
return
$array
;
}
$offset
=
$offsetByKey
[
$after
];
// Insert at the specified offset
$before
=
array_slice
(
$array
,
0
,
$offset
+
1
,
true
);
$after
=
array_slice
(
$array
,
$offset
+
1
,
count
(
$array
)
-
$offset
,
true
);
$output
=
$before
+
$insert
+
$after
;
return
$output
;
}
/**
* Recursively converts the parameter (an object) to an array with the same data
*
* @phpcs:ignore MediaWiki.Commenting.FunctionComment.ObjectTypeHintParam
* @param object|array $objOrArray
* @param bool $recursive
* @return array
*/
function
wfObjectToArray
(
$objOrArray
,
$recursive
=
true
)
{
$array
=
[];
if
(
is_object
(
$objOrArray
)
)
{
$objOrArray
=
get_object_vars
(
$objOrArray
);
}
foreach
(
$objOrArray
as
$key
=>
$value
)
{
if
(
$recursive
&&
(
is_object
(
$value
)
||
is_array
(
$value
)
)
)
{
$value
=
wfObjectToArray
(
$value
);
}
$array
[
$key
]
=
$value
;
}
return
$array
;
}
/**
* Get a random decimal value in the domain of [0, 1), in a way
* not likely to give duplicate values for any realistic
* number of articles.
*
* @note This is designed for use in relation to Special:RandomPage
* and the page_random database field.
*
* @return string
*/
function
wfRandom
()
{
// The maximum random value is "only" 2^31-1, so get two random
// values to reduce the chance of dupes
$max
=
mt_getrandmax
()
+
1
;
$rand
=
number_format
(
(
mt_rand
()
*
$max
+
mt_rand
()
)
/
$max
/
$max
,
12
,
'.'
,
''
);
return
$rand
;
}
/**
* Get a random string containing a number of pseudo-random hex characters.
*
* @note This is not secure, if you are trying to generate some sort
* of token please use MWCryptRand instead.
*
* @param int $length The length of the string to generate
* @return string
* @since 1.20
*/
function
wfRandomString
(
$length
=
32
)
{
$str
=
''
;
for
(
$n
=
0
;
$n
<
$length
;
$n
+=
7
)
{
$str
.=
sprintf
(
'%07x'
,
mt_rand
()
&
0xfffffff
);
}
return
substr
(
$str
,
0
,
$length
);
}
/**
* We want some things to be included as literal characters in our title URLs
* for prettiness, which urlencode encodes by default. According to RFC 1738,
* all of the following should be safe:
*
* ;:@&=$-_.+!*'(),
*
* RFC 1738 says ~ is unsafe, however RFC 3986 considers it an unreserved
* character which should not be encoded. More importantly, google chrome
* always converts %7E back to ~, and converting it in this function can
* cause a redirect loop (T105265).
*
* But + is not safe because it's used to indicate a space; &= are only safe in
* paths and not in queries (and we don't distinguish here); ' seems kind of
* scary; and urlencode() doesn't touch -_. to begin with. Plus, although /
* is reserved, we don't care. So the list we unescape is:
*
* ;:@$!*(),/~
*
* However, IIS7 redirects fail when the url contains a colon (see T24709),
* so no fancy : for IIS7.
*
* %2F in the page titles seems to fatally break for some reason.
*
* @param string $s
* @return string
*/
function
wfUrlencode
(
$s
)
{
static
$needle
;
if
(
$s
===
null
)
{
// Reset $needle for testing.
$needle
=
null
;
return
''
;
}
if
(
$needle
===
null
)
{
$needle
=
[
'%3B'
,
'%40'
,
'%24'
,
'%21'
,
'%2A'
,
'%28'
,
'%29'
,
'%2C'
,
'%2F'
,
'%7E'
];
if
(
!
isset
(
$_SERVER
[
'SERVER_SOFTWARE'
]
)
||
!
str_contains
(
$_SERVER
[
'SERVER_SOFTWARE'
],
'Microsoft-IIS/7'
)
)
{
$needle
[]
=
'%3A'
;
}
}
$s
=
urlencode
(
$s
);
$s
=
str_ireplace
(
$needle
,
[
';'
,
'@'
,
'$'
,
'!'
,
'*'
,
'('
,
')'
,
','
,
'/'
,
'~'
,
':'
],
$s
);
return
$s
;
}
/**
* This function takes one or two arrays as input, and returns a CGI-style string, e.g.
* "days=7&limit=100". Options in the first array override options in the second.
* Options set to null or false will not be output.
*
* @param array $array1 ( String|Array )
* @param array|null $array2 ( String|Array )
* @param string $prefix
* @return string
*/
function
wfArrayToCgi
(
$array1
,
$array2
=
null
,
$prefix
=
''
)
{
if
(
$array2
!==
null
)
{
$array1
+=
$array2
;
}
$cgi
=
''
;
foreach
(
$array1
as
$key
=>
$value
)
{
if
(
$value
!==
null
&&
$value
!==
false
)
{
if
(
$cgi
!=
''
)
{
$cgi
.=
'&'
;
}
if
(
$prefix
!==
''
)
{
$key
=
$prefix
.
"[$key]"
;
}
if
(
is_array
(
$value
)
)
{
$firstTime
=
true
;
foreach
(
$value
as
$k
=>
$v
)
{
$cgi
.=
$firstTime
?
''
:
'&'
;
if
(
is_array
(
$v
)
)
{
$cgi
.=
wfArrayToCgi
(
$v
,
null
,
$key
.
"[$k]"
);
}
else
{
$cgi
.=
urlencode
(
$key
.
"[$k]"
)
.
'='
.
urlencode
(
$v
);
}
$firstTime
=
false
;
}
}
else
{
if
(
is_object
(
$value
)
)
{
$value
=
$value
->
__toString
();
}
$cgi
.=
urlencode
(
$key
)
.
'='
.
urlencode
(
$value
);
}
}
}
return
$cgi
;
}
/**
* This is the logical opposite of wfArrayToCgi(): it accepts a query string as
* its argument and returns the same string in array form. This allows compatibility
* with legacy functions that accept raw query strings instead of nice
* arrays. Of course, keys and values are urldecode()d.
*
* @param string $query Query string
* @return string[] Array version of input
*/
function
wfCgiToArray
(
$query
)
{
if
(
isset
(
$query
[
0
]
)
&&
$query
[
0
]
==
'?'
)
{
$query
=
substr
(
$query
,
1
);
}
$bits
=
explode
(
'&'
,
$query
);
$ret
=
[];
foreach
(
$bits
as
$bit
)
{
if
(
$bit
===
''
)
{
continue
;
}
if
(
strpos
(
$bit
,
'='
)
===
false
)
{
// Pieces like &qwerty become 'qwerty' => '' (at least this is what php does)
$key
=
$bit
;
$value
=
''
;
}
else
{
[
$key
,
$value
]
=
explode
(
'='
,
$bit
);
}
$key
=
urldecode
(
$key
);
$value
=
urldecode
(
$value
);
if
(
strpos
(
$key
,
'['
)
!==
false
)
{
$keys
=
array_reverse
(
explode
(
'['
,
$key
)
);
$key
=
array_pop
(
$keys
);
$temp
=
$value
;
foreach
(
$keys
as
$k
)
{
$k
=
substr
(
$k
,
0
,
-
1
);
$temp
=
[
$k
=>
$temp
];
}
if
(
isset
(
$ret
[
$key
]
)
&&
is_array
(
$ret
[
$key
]
)
)
{
$ret
[
$key
]
=
array_merge
(
$ret
[
$key
],
$temp
);
}
else
{
$ret
[
$key
]
=
$temp
;
}
}
else
{
$ret
[
$key
]
=
$value
;
}
}
return
$ret
;
}
/**
* Append a query string to an existing URL, which may or may not already
* have query string parameters already. If so, they will be combined.
*
* @param string $url
* @param string|array $query String or associative array
* @return string
*/
function
wfAppendQuery
(
$url
,
$query
)
{
if
(
is_array
(
$query
)
)
{
$query
=
wfArrayToCgi
(
$query
);
}
if
(
$query
!=
''
)
{
// Remove the fragment, if there is one
$fragment
=
false
;
$hashPos
=
strpos
(
$url
,
'#'
);
if
(
$hashPos
!==
false
)
{
$fragment
=
substr
(
$url
,
$hashPos
);
$url
=
substr
(
$url
,
0
,
$hashPos
);
}
// Add parameter
if
(
strpos
(
$url
,
'?'
)
===
false
)
{
$url
.=
'?'
;
}
else
{
$url
.=
'&'
;
}
$url
.=
$query
;
// Put the fragment back
if
(
$fragment
!==
false
)
{
$url
.=
$fragment
;
}
}
return
$url
;
}
/**
* @deprecated since 1.43; get a UrlUtils from services, or construct your own
* @internal
* @return UrlUtils from services if initialized, otherwise make one from globals
*/
function
wfGetUrlUtils
():
UrlUtils
{
global
$wgServer
,
$wgCanonicalServer
,
$wgInternalServer
,
$wgRequest
,
$wgHttpsPort
,
$wgUrlProtocols
;
if
(
MediaWikiServices
::
hasInstance
()
)
{
$services
=
MediaWikiServices
::
getInstance
();
if
(
$services
->
hasService
(
'UrlUtils'
)
)
{
return
$services
->
getUrlUtils
();
}
}
return
new
UrlUtils
(
[
// UrlUtils throws if the relevant $wg(|Canonical|Internal) variable is null, but the old
// implementations implicitly converted it to an empty string (presumably by mistake).
// Preserve the old behavior for compatibility.
UrlUtils
::
SERVER
=>
$wgServer
??
''
,
UrlUtils
::
CANONICAL_SERVER
=>
$wgCanonicalServer
??
''
,
UrlUtils
::
INTERNAL_SERVER
=>
$wgInternalServer
??
''
,
UrlUtils
::
FALLBACK_PROTOCOL
=>
$wgRequest
?
$wgRequest
->
getProtocol
()
:
WebRequest
::
detectProtocol
(),
UrlUtils
::
HTTPS_PORT
=>
$wgHttpsPort
,
UrlUtils
::
VALID_PROTOCOLS
=>
$wgUrlProtocols
,
]
);
}
/**
* Expand a potentially local URL to a fully-qualified URL using $wgServer
* (or one of its alternatives).
*
* The meaning of the PROTO_* constants is as follows:
* PROTO_HTTP: Output a URL starting with http://
* PROTO_HTTPS: Output a URL starting with https://
* PROTO_RELATIVE: Output a URL starting with // (protocol-relative URL)
* PROTO_CURRENT: Output a URL starting with either http:// or https:// , depending
* on which protocol was used for the current incoming request
* PROTO_CANONICAL: For URLs without a domain, like /w/index.php , use $wgCanonicalServer.
* For protocol-relative URLs, use the protocol of $wgCanonicalServer
* PROTO_INTERNAL: Like PROTO_CANONICAL, but uses $wgInternalServer instead of $wgCanonicalServer
*
* If $url specifies a protocol, or $url is domain-relative and $wgServer
* specifies a protocol, PROTO_HTTP, PROTO_HTTPS, PROTO_RELATIVE and
* PROTO_CURRENT do not change that.
*
* Parent references (/../) in the path are resolved (as in UrlUtils::removeDotSegments()).
*
* @deprecated since 1.39, use UrlUtils::expand()
* @param string $url An URL; can be absolute (e.g. http://example.com/foo/bar),
* protocol-relative (//example.com/foo/bar) or domain-relative (/foo/bar).
* @param string|int|null $defaultProto One of the PROTO_* constants, as described above.
* @return string|false Fully-qualified URL, current-path-relative URL or false if
* no valid URL can be constructed
*/
function
wfExpandUrl
(
$url
,
$defaultProto
=
PROTO_CURRENT
)
{
return
wfGetUrlUtils
()->
expand
(
(
string
)
$url
,
$defaultProto
)
??
false
;
}
/**
* Get the wiki's "server", i.e. the protocol and host part of the URL, with a
* protocol specified using a PROTO_* constant as in wfExpandUrl()
*
* @deprecated since 1.39, use UrlUtils::getServer(); hard-deprecated since 1.43
* @since 1.32
* @param string|int|null $proto One of the PROTO_* constants.
* @return string The URL
*/
function
wfGetServerUrl
(
$proto
)
{
wfDeprecated
(
__FUNCTION__
,
'1.39'
);
return
wfGetUrlUtils
()->
getServer
(
$proto
)
??
''
;
}
/**
* This function will reassemble a URL parsed with wfParseURL. This is useful
* if you need to edit part of a URL and put it back together.
*
* This is the basic structure used (brackets contain keys for $urlParts):
* [scheme][delimiter][user]:[pass]@[host]:[port][path]?[query]#[fragment]
*
* @deprecated since 1.39, use UrlUtils::assemble()
* @since 1.19
* @param array $urlParts URL parts, as output from wfParseUrl
* @return string URL assembled from its component parts
*/
function
wfAssembleUrl
(
$urlParts
)
{
return
UrlUtils
::
assemble
(
(
array
)
$urlParts
);
}
/**
* Returns a partial regular expression of recognized URL protocols, e.g. "http:\/\/|https:\/\/"
*
* @deprecated since 1.39, use UrlUtils::validProtocols(); hard-deprecated since 1.43
* @param bool $includeProtocolRelative If false, remove '//' from the returned protocol list.
* DO NOT USE this directly, use wfUrlProtocolsWithoutProtRel() instead
* @return string
*/
function
wfUrlProtocols
(
$includeProtocolRelative
=
true
)
{
wfDeprecated
(
__FUNCTION__
,
'1.39'
);
return
$includeProtocolRelative
?
wfGetUrlUtils
()->
validProtocols
()
:
wfGetUrlUtils
()->
validAbsoluteProtocols
();
}
/**
* Like wfUrlProtocols(), but excludes '//' from the protocol list. Use this if
* you need a regex that matches all URL protocols but does not match protocol-
* relative URLs
* @deprecated since 1.39, use UrlUtils::validAbsoluteProtocols()
* @return string
*/
function
wfUrlProtocolsWithoutProtRel
()
{
return
wfGetUrlUtils
()->
validAbsoluteProtocols
();
}
/**
* parse_url() work-alike, but non-broken. Differences:
*
* 1) Handles protocols that don't use :// (e.g., mailto: and news:, as well as
* protocol-relative URLs) correctly.
* 2) Adds a "delimiter" element to the array (see (2)).
* 3) Verifies that the protocol is on the $wgUrlProtocols allowed list.
* 4) Rejects some invalid URLs that parse_url doesn't, e.g. the empty string or URLs starting with
* a line feed character.
*
* @deprecated since 1.39, use UrlUtils::parse()
* @param string $url A URL to parse
* @return string[]|false Bits of the URL in an associative array, or false on failure.
* Possible fields:
* - scheme: URI scheme (protocol), e.g. 'http', 'mailto'. Lowercase, always present, but can
* be an empty string for protocol-relative URLs.
* - delimiter: either '://', ':' or '//'. Always present.
* - host: domain name / IP. Always present, but could be an empty string, e.g. for file: URLs.
* - port: port number. Will be missing when port is not explicitly specified.
* - user: user name, e.g. for HTTP Basic auth URLs such as http://user:pass@example.com/
* Missing when there is no username.
* - pass: password, same as above.
* - path: path including the leading /. Will be missing when empty (e.g. 'http://example.com')
* - query: query string (as a string; see wfCgiToArray() for parsing it), can be missing.
* - fragment: the part after #, can be missing.
*/
function
wfParseUrl
(
$url
)
{
return
wfGetUrlUtils
()->
parse
(
(
string
)
$url
)
??
false
;
}
/**
* Take a URL, make sure it's expanded to fully qualified, and replace any
* encoded non-ASCII Unicode characters with their UTF-8 original forms
* for more compact display and legibility for local audiences.
*
* @deprecated since 1.39, use UrlUtils::expandIRI(); hard-deprecated since 1.43
* @param string $url
* @return string
*/
function
wfExpandIRI
(
$url
)
{
wfDeprecated
(
__FUNCTION__
,
'1.39'
);
return
wfGetUrlUtils
()->
expandIRI
(
(
string
)
$url
)
??
''
;
}
/**
* Check whether a given URL has a domain that occurs in a given set of domains
*
* @deprecated since 1.39, use UrlUtils::expandIRI()
* @param string $url
* @param array $domains Array of domains (strings)
* @return bool True if the host part of $url ends in one of the strings in $domains
*/
function
wfMatchesDomainList
(
$url
,
$domains
)
{
return
wfGetUrlUtils
()->
matchesDomainList
(
(
string
)
$url
,
(
array
)
$domains
);
}
/**
* Sends a line to the debug log if enabled or, optionally, to a comment in output.
* In normal operation this is a NOP.
*
* Controlling globals:
* $wgDebugLogFile - points to the log file
* $wgDebugRawPage - if false, 'action=raw' hits will not result in debug output.
* $wgDebugComments - if on, some debug items may appear in comments in the HTML output.
*
* @since 1.25 support for additional context data
*
* @param string $text
* @param string|bool $dest Destination of the message:
* - 'all': both to the log and HTML (debug toolbar or HTML comments)
* - 'private': excluded from HTML output
* For backward compatibility, it can also take a boolean:
* - true: same as 'all'
* - false: same as 'private'
* @param array $context Additional logging context data
*/
function
wfDebug
(
$text
,
$dest
=
'all'
,
array
$context
=
[]
)
{
global
$wgDebugRawPage
,
$wgDebugLogPrefix
;
if
(
!
$wgDebugRawPage
&&
wfIsDebugRawPage
()
)
{
return
;
}
$text
=
trim
(
$text
);
if
(
$wgDebugLogPrefix
!==
''
)
{
$context
[
'prefix'
]
=
$wgDebugLogPrefix
;
}
$context
[
'private'
]
=
(
$dest
===
false
||
$dest
===
'private'
);
$logger
=
LoggerFactory
::
getInstance
(
'wfDebug'
);
$logger
->
debug
(
$text
,
$context
);
}
/**
* Returns true if debug logging should be suppressed if $wgDebugRawPage = false
* @return bool
*/
function
wfIsDebugRawPage
()
{
static
$cache
;
if
(
$cache
!==
null
)
{
return
$cache
;
}
// Check for raw action using $_GET not $wgRequest, since the latter might not be initialised yet
// phpcs:ignore MediaWiki.Usage.SuperGlobalsUsage.SuperGlobals
if
(
(
isset
(
$_GET
[
'action'
]
)
&&
$_GET
[
'action'
]
==
'raw'
)
||
MW_ENTRY_POINT
===
'load'
)
{
$cache
=
true
;
}
else
{
$cache
=
false
;
}
return
$cache
;
}
/**
* Send a line to a supplementary debug log file, if configured, or main debug
* log if not.
*
* To configure a supplementary log file, set $wgDebugLogGroups[$logGroup] to
* a string filename or an associative array mapping 'destination' to the
* desired filename. The associative array may also contain a 'sample' key
* with an integer value, specifying a sampling factor. Sampled log events
* will be emitted with a 1 in N random chance.
*
* @since 1.23 support for sampling log messages via $wgDebugLogGroups.
* @since 1.25 support for additional context data
* @since 1.25 sample behavior dependent on configured $wgMWLoggerDefaultSpi
*
* @param string $logGroup
* @param string $text
* @param string|bool $dest Destination of the message:
* - 'all': both to the log and HTML (debug toolbar or HTML comments)
* - 'private': only to the specific log if set in $wgDebugLogGroups and
* discarded otherwise
* For backward compatibility, it can also take a boolean:
* - true: same as 'all'
* - false: same as 'private'
* @param array $context Additional logging context data
*/
function
wfDebugLog
(
$logGroup
,
$text
,
$dest
=
'all'
,
array
$context
=
[]
)
{
$text
=
trim
(
$text
);
$logger
=
LoggerFactory
::
getInstance
(
$logGroup
);
$context
[
'private'
]
=
(
$dest
===
false
||
$dest
===
'private'
);
$logger
->
info
(
$text
,
$context
);
}
/**
* Log for database errors
*
* @since 1.25 support for additional context data
*
* @param string $text Database error message.
* @param array $context Additional logging context data
*/
function
wfLogDBError
(
$text
,
array
$context
=
[]
)
{
$logger
=
LoggerFactory
::
getInstance
(
'wfLogDBError'
);
$logger
->
error
(
trim
(
$text
),
$context
);
}
/**
* Logs a warning that a deprecated feature was used.
*
* To write a custom deprecation message, use wfDeprecatedMsg() instead.
*
* @param string $function Feature that is deprecated.
* @param string|false $version Version of MediaWiki that the feature
* was deprecated in (Added in 1.19).
* @param string|bool $component Component to which the feature belongs.
* If false, it is assumed the function is in MediaWiki core (Added in 1.19).
* @param int $callerOffset How far up the call stack is the original
* caller. 2 = function that called the function that called
* wfDeprecated (Added in 1.20).
* @throws InvalidArgumentException If the MediaWiki version
* number specified by $version is neither a string nor false.
*/
function
wfDeprecated
(
$function
,
$version
=
false
,
$component
=
false
,
$callerOffset
=
2
)
{
if
(
!
is_string
(
$version
)
&&
$version
!==
false
)
{
throw
new
InvalidArgumentException
(
"MediaWiki version must either be a string or false. "
.
"Example valid version: '1.33'"
);
}
MWDebug
::
deprecated
(
$function
,
$version
,
$component
,
$callerOffset
+
1
);
}
/**
* Log a deprecation warning with arbitrary message text. A caller
* description will be appended. If the message has already been sent for
* this caller, it won't be sent again.
*
* Although there are component and version parameters, they are not
* automatically appended to the message. The message text should include
* information about when the thing was deprecated. The component and version
* are just used to implement $wgDeprecationReleaseLimit.
*
* @since 1.35
* @param string $msg The message
* @param string|false $version Version of MediaWiki that the function
* was deprecated in.
* @param string|bool $component Component to which the function belongs.
* If false, it is assumed the function is in MediaWiki core.
* @param int|false $callerOffset How far up the call stack is the original
* caller. 2 = function that called the function that called us. If false,
* the caller description will not be appended.
*/
function
wfDeprecatedMsg
(
$msg
,
$version
=
false
,
$component
=
false
,
$callerOffset
=
2
)
{
MWDebug
::
deprecatedMsg
(
$msg
,
$version
,
$component
,
$callerOffset
===
false
?
false
:
$callerOffset
+
1
);
}
/**
* Send a warning either to the debug log or in a PHP error depending on
* $wgDevelopmentWarnings. To log warnings in production, use wfLogWarning() instead.
*
* @param string $msg Message to send
* @param int $callerOffset Number of items to go back in the backtrace to
* find the correct caller (1 = function calling wfWarn, ...)
* @param int $level PHP error level; defaults to E_USER_NOTICE;
* only used when $wgDevelopmentWarnings is true
*/
function
wfWarn
(
$msg
,
$callerOffset
=
1
,
$level
=
E_USER_NOTICE
)
{
MWDebug
::
warning
(
$msg
,
$callerOffset
+
1
,
$level
,
'auto'
);
}
/**
* Send a warning as a PHP error and the debug log. This is intended for logging
* warnings in production. For logging development warnings, use WfWarn instead.
*
* @param string $msg Message to send
* @param int $callerOffset Number of items to go back in the backtrace to
* find the correct caller (1 = function calling wfLogWarning, ...)
* @param int $level PHP error level; defaults to E_USER_WARNING
*/
function
wfLogWarning
(
$msg
,
$callerOffset
=
1
,
$level
=
E_USER_WARNING
)
{
MWDebug
::
warning
(
$msg
,
$callerOffset
+
1
,
$level
,
'production'
);
}
/**
* This is the function for getting translated interface messages.
*
* @see Message class for documentation how to use them.
* @see https://www.mediawiki.org/wiki/Manual:Messages_API
*
* This function replaces all old wfMsg* functions.
*
* When the MessageSpecifier object is an instance of Message, a clone of the object is returned.
* This is unlike the `new Message( … )` constructor, which returns a new object constructed from
* scratch with the same key. This difference is mostly relevant when the passed object is an
* instance of a subclass like RawMessage or ApiMessage.
*
* @param string|string[]|MessageSpecifier $key Message key, or array of keys, or a MessageSpecifier
* @param mixed ...$params Normal message parameters
* @return Message
*
* @since 1.17
*
* @see Message::__construct
*/
function
wfMessage
(
$key
,
...
$params
)
{
if
(
is_array
(
$key
)
)
{
// Fallback keys are not allowed in message specifiers
$message
=
wfMessageFallback
(
...
$key
);
}
else
{
$message
=
Message
::
newFromSpecifier
(
$key
);
}
// We call Message::params() to reduce code duplication
if
(
$params
)
{
$message
->
params
(
...
$params
);
}
return
$message
;
}
/**
* This function accepts multiple message keys and returns a message instance
* for the first message which is non-empty. If all messages are empty then an
* instance of the last message key is returned.
*
* @param string ...$keys Message keys
* @return Message
*
* @since 1.18
*
* @see Message::newFallbackSequence
*/
function
wfMessageFallback
(
...
$keys
)
{
return
Message
::
newFallbackSequence
(
...
$keys
);
}
/**
* Replace message parameter keys on the given formatted output.
*
* @param string $message
* @param array $args
* @return string
* @internal
*/
function
wfMsgReplaceArgs
(
$message
,
$args
)
{
# Fix windows line-endings
# Some messages are split with explode("\n", $msg)
$message
=
str_replace
(
"
\r
"
,
''
,
$message
);
// Replace arguments
if
(
is_array
(
$args
)
&&
$args
)
{
if
(
is_array
(
$args
[
0
]
)
)
{
$args
=
array_values
(
$args
[
0
]
);
}
$replacementKeys
=
[];
foreach
(
$args
as
$n
=>
$param
)
{
$replacementKeys
[
'$'
.
(
$n
+
1
)]
=
$param
;
}
$message
=
strtr
(
$message
,
$replacementKeys
);
}
return
$message
;
}
/**
* Get host name of the current machine, for use in error reporting.
*
* This helps to know which machine in a data center generated the
* current page.
*
* @return string
*/
function
wfHostname
()
{
// Hostname overriding
global
$wgOverrideHostname
;
if
(
$wgOverrideHostname
!==
false
)
{
return
$wgOverrideHostname
;
}
return
php_uname
(
'n'
)
?:
'unknown'
;
}
/**
* Safety wrapper for debug_backtrace().
*
* Will return an empty array if debug_backtrace is disabled, otherwise
* the output from debug_backtrace() (trimmed).
*
* @param int $limit This parameter can be used to limit the number of stack frames returned
*
* @return array Array of backtrace information
*/
function
wfDebugBacktrace
(
$limit
=
0
)
{
static
$disabled
=
null
;
if
(
$disabled
===
null
)
{
$disabled
=
!
function_exists
(
'debug_backtrace'
);
if
(
$disabled
)
{
wfDebug
(
"debug_backtrace() is disabled"
);
}
}
if
(
$disabled
)
{
return
[];
}
if
(
$limit
)
{
return
array_slice
(
debug_backtrace
(
DEBUG_BACKTRACE_PROVIDE_OBJECT
,
$limit
+
1
),
1
);
}
else
{
return
array_slice
(
debug_backtrace
(),
1
);
}
}
/**
* Get a debug backtrace as a string
*
* @param bool|null $raw If true, the return value is plain text. If false, HTML.
* Defaults to true if MW_ENTRY_POINT is 'cli', otherwise false.
* @return string
* @since 1.25 Supports $raw parameter.
*/
function
wfBacktrace
(
$raw
=
null
)
{
$raw
??=
MW_ENTRY_POINT
===
'cli'
;
if
(
$raw
)
{
$frameFormat
=
"%s line %s calls %s()
\n
"
;
$traceFormat
=
"%s"
;
}
else
{
$frameFormat
=
"<li>%s line %s calls %s()</li>
\n
"
;
$traceFormat
=
"<ul>
\n
%s</ul>
\n
"
;
}
$frames
=
array_map
(
static
function
(
$frame
)
use
(
$frameFormat
)
{
$file
=
!
empty
(
$frame
[
'file'
]
)
?
basename
(
$frame
[
'file'
]
)
:
'-'
;
$line
=
$frame
[
'line'
]
??
'-'
;
$call
=
$frame
[
'function'
];
if
(
!
empty
(
$frame
[
'class'
]
)
)
{
$call
=
$frame
[
'class'
]
.
$frame
[
'type'
]
.
$call
;
}
return
sprintf
(
$frameFormat
,
$file
,
$line
,
$call
);
},
wfDebugBacktrace
()
);
return
sprintf
(
$traceFormat
,
implode
(
''
,
$frames
)
);
}
/**
* Get the name of the function which called this function
* wfGetCaller( 1 ) is the function with the wfGetCaller() call (ie. __FUNCTION__)
* wfGetCaller( 2 ) [default] is the caller of the function running wfGetCaller()
* wfGetCaller( 3 ) is the parent of that.
*
* The format will be the same as for {@see wfFormatStackFrame()}.
* @param int $level
* @return string function name or 'unknown'
*/
function
wfGetCaller
(
$level
=
2
)
{
$backtrace
=
wfDebugBacktrace
(
$level
+
1
);
if
(
isset
(
$backtrace
[
$level
]
)
)
{
return
wfFormatStackFrame
(
$backtrace
[
$level
]
);
}
else
{
return
'unknown'
;
}
}
/**
* Return a string consisting of callers in the stack. Useful sometimes
* for profiling specific points.
*
* @param int|false $limit The maximum depth of the stack frame to return, or false for the entire stack.
* @return string
*/
function
wfGetAllCallers
(
$limit
=
3
)
{
$trace
=
array_reverse
(
wfDebugBacktrace
()
);
if
(
!
$limit
||
$limit
>
count
(
$trace
)
-
1
)
{
$limit
=
count
(
$trace
)
-
1
;
}
$trace
=
array_slice
(
$trace
,
-
$limit
-
1
,
$limit
);
return
implode
(
'/'
,
array_map
(
'wfFormatStackFrame'
,
$trace
)
);
}
/**
* Return a string representation of frame
*
* Typically, the returned value will be in one of these formats:
* - method
* - Fully\Qualified\method
* - Fully\Qualified\Class->method
* - Fully\Qualified\Class::method
*
* @param array $frame
* @return string
*/
function
wfFormatStackFrame
(
$frame
)
{
if
(
!
isset
(
$frame
[
'function'
]
)
)
{
return
'NO_FUNCTION_GIVEN'
;
}
return
isset
(
$frame
[
'class'
]
)
&&
isset
(
$frame
[
'type'
]
)
?
$frame
[
'class'
]
.
$frame
[
'type'
]
.
$frame
[
'function'
]
:
$frame
[
'function'
];
}
/**
* Whether the client accept gzip encoding
*
* Uses the Accept-Encoding header to check if the client supports gzip encoding.
* Use this when considering to send a gzip-encoded response to the client.
*
* @param bool $force Forces another check even if we already have a cached result.
* @return bool
*/
function
wfClientAcceptsGzip
(
$force
=
false
)
{
static
$result
=
null
;
if
(
$result
===
null
||
$force
)
{
$result
=
false
;
if
(
isset
(
$_SERVER
[
'HTTP_ACCEPT_ENCODING'
]
)
)
{
# @todo FIXME: We may want to disallow some broken browsers
$m
=
[];
if
(
preg_match
(
'/
\b
gzip(?:;(q)=([0-9]+(?:
\.
[0-9]+)))?
\b
/'
,
$_SERVER
[
'HTTP_ACCEPT_ENCODING'
],
$m
)
)
{
if
(
isset
(
$m
[
2
]
)
&&
(
$m
[
1
]
==
'q'
)
&&
(
$m
[
2
]
==
0
)
)
{
return
$result
;
}
wfDebug
(
"wfClientAcceptsGzip: client accepts gzip."
);
$result
=
true
;
}
}
}
return
$result
;
}
/**
* Escapes the given text so that it may be output using addWikiText()
* without any linking, formatting, etc. making its way through. This
* is achieved by substituting certain characters with HTML entities.
* As required by the callers, "<nowiki>" is not used.
*
* @param string|null|false $input Text to be escaped
* @param-taint $input escapes_html
* @return string
*/
function
wfEscapeWikiText
(
$input
):
string
{
global
$wgEnableMagicLinks
;
static
$repl
=
null
,
$repl2
=
null
,
$repl3
=
null
,
$repl4
=
null
;
if
(
$repl
===
null
||
defined
(
'MW_PARSER_TEST'
)
||
defined
(
'MW_PHPUNIT_TEST'
)
)
{
// Tests depend upon being able to change $wgEnableMagicLinks, so don't cache
// in those situations
$repl
=
[
'"'
=>
'"'
,
'&'
=>
'&'
,
"'"
=>
'''
,
'<'
=>
'<'
,
'='
=>
'='
,
'>'
=>
'>'
,
'['
=>
'['
,
']'
=>
']'
,
'{'
=>
'{'
,
'|'
=>
'|'
,
'}'
=>
'}'
,
';'
=>
';'
,
// a token inside language converter brackets
'!!'
=>
'!!'
,
// a token inside table context
"
\n
!"
=>
"
\n
!"
,
"
\r
!"
=>
"
\r
!"
,
// a token inside table context
"
\n
#"
=>
"
\n
#"
,
"
\r
#"
=>
"
\r
#"
,
"
\n
*"
=>
"
\n
*"
,
"
\r
*"
=>
"
\r
*"
,
"
\n
:"
=>
"
\n
:"
,
"
\r
:"
=>
"
\r
:"
,
"
\n
"
=>
"
\n
 "
,
"
\r
"
=>
"
\r
 "
,
"
\n\n
"
=>
"
\n
"
,
"
\r\n
"
=>
"
\n
"
,
"
\n\r
"
=>
"
\n
"
,
"
\r\r
"
=>
"
\r
"
,
"
\n\t
"
=>
"
\n
	"
,
"
\r\t
"
=>
"
\r
	"
,
// "\n\t\n" is treated like "\n\n"
"
\n
----"
=>
"
\n
----"
,
"
\r
----"
=>
"
\r
----"
,
'__'
=>
'__'
,
'://'
=>
'://'
,
'~~~'
=>
'~~~'
,
// protect from PST, just to be safe(r)
];
$magicLinks
=
array_keys
(
array_filter
(
$wgEnableMagicLinks
)
);
// We have to catch everything "\s" matches in PCRE
foreach
(
$magicLinks
as
$magic
)
{
$repl
[
"$magic "
]
=
"$magic "
;
$repl
[
"$magic
\t
"
]
=
"$magic	"
;
$repl
[
"$magic
\r
"
]
=
"$magic "
;
$repl
[
"$magic
\n
"
]
=
"$magic "
;
$repl
[
"$magic
\f
"
]
=
"$magic"
;
}
// Additionally escape the following characters at the beginning of the
// string, in case they merge to form tokens when spliced into a
// string. Tokens like -{ {{ [[ {| etc are already escaped because
// the second character is escaped above, but the following tokens
// are handled here: |+ |- __FOO__ ~~~
$repl3
=
[
'+'
=>
'+'
,
'-'
=>
'-'
,
'_'
=>
'_'
,
'~'
=>
'~'
,
];
// Similarly, protect the following characters at the end of the
// string, which could turn form the start of `__FOO__` or `~~~~`
// A trailing newline could also form the unintended start of a
// paragraph break if it is glued to a newline in the following
// context.
$repl4
=
[
'_'
=>
'_'
,
'~'
=>
'~'
,
"
\n
"
=>
" "
,
"
\r
"
=>
" "
,
"
\t
"
=>
"	"
,
// "\n\t\n" is treated like "\n\n"
];
// And handle protocols that don't use "://"
global
$wgUrlProtocols
;
$repl2
=
[];
foreach
(
$wgUrlProtocols
as
$prot
)
{
if
(
substr
(
$prot
,
-
1
)
===
':'
)
{
$repl2
[]
=
preg_quote
(
substr
(
$prot
,
0
,
-
1
),
'/'
);
}
}
$repl2
=
$repl2
?
'/
\b
('
.
implode
(
'|'
,
$repl2
)
.
'):/i'
:
'/^(?!)/'
;
}
// Tell phan that $repl2, $repl3 and $repl4 will also be non-null here
'@phan-var string $repl2'
;
'@phan-var string $repl3'
;
'@phan-var string $repl4'
;
// This will also stringify input in case it's not a string
$text
=
substr
(
strtr
(
"
\n
$input"
,
$repl
),
1
);
if
(
$text
===
''
)
{
return
$text
;
}
$first
=
strtr
(
$text
[
0
],
$repl3
);
// protect first character
if
(
strlen
(
$text
)
>
1
)
{
$text
=
$first
.
substr
(
$text
,
1
,
-
1
)
.
strtr
(
substr
(
$text
,
-
1
),
$repl4
);
// protect last character
}
else
{
// special case for single-character strings
$text
=
strtr
(
$first
,
$repl4
);
// protect last character
}
$text
=
preg_replace
(
$repl2
,
'$1:'
,
$text
);
return
$text
;
}
/**
* Sets dest to source and returns the original value of dest
* If source is NULL, it just returns the value, it doesn't set the variable
* If force is true, it will set the value even if source is NULL
*
* @param mixed &$dest
* @param mixed $source
* @param bool $force
* @return mixed
*/
function
wfSetVar
(
&
$dest
,
$source
,
$force
=
false
)
{
$temp
=
$dest
;
if
(
$source
!==
null
||
$force
)
{
$dest
=
$source
;
}
return
$temp
;
}
/**
* As for wfSetVar except setting a bit
*
* @param int &$dest
* @param int $bit
* @param bool $state
*
* @return bool
*/
function
wfSetBit
(
&
$dest
,
$bit
,
$state
=
true
)
{
$temp
=
(
bool
)(
$dest
&
$bit
);
if
(
$state
!==
null
)
{
if
(
$state
)
{
$dest
|=
$bit
;
}
else
{
$dest
&=
~
$bit
;
}
}
return
$temp
;
}
/**
* A wrapper around the PHP function var_export().
* Either print it or add it to the regular output ($wgOut).
*
* @param mixed $var A PHP variable to dump.
*/
function
wfVarDump
(
$var
)
{
global
$wgOut
;
$s
=
str_replace
(
"
\n
"
,
"<br />
\n
"
,
var_export
(
$var
,
true
)
.
"
\n
"
);
if
(
headers_sent
()
||
!
isset
(
$wgOut
)
||
!
is_object
(
$wgOut
)
)
{
print
$s
;
}
else
{
$wgOut
->
addHTML
(
$s
);
}
}
/**
* Provide a simple HTTP error.
*
* @param int|string $code
* @param string $label
* @param string $desc
*/
function
wfHttpError
(
$code
,
$label
,
$desc
)
{
global
$wgOut
;
HttpStatus
::
header
(
$code
);
if
(
$wgOut
)
{
$wgOut
->
disable
();
$wgOut
->
sendCacheControl
();
}
\MediaWiki\Request\HeaderCallback
::
warnIfHeadersSent
();
header
(
'Content-type: text/html; charset=utf-8'
);
ob_start
();
print
'<!DOCTYPE html>'
.
'<html><head><title>'
.
htmlspecialchars
(
$label
)
.
'</title></head><body><h1>'
.
htmlspecialchars
(
$label
)
.
'</h1><p>'
.
nl2br
(
htmlspecialchars
(
$desc
)
)
.
"</p></body></html>
\n
"
;
header
(
'Content-Length: '
.
ob_get_length
()
);
ob_end_flush
();
}
/**
* Clear away any user-level output buffers, discarding contents.
*
* Suitable for 'starting afresh', for instance when streaming
* relatively large amounts of data without buffering, or wanting to
* output image files without ob_gzhandler's compression.
*
* The optional $resetGzipEncoding parameter controls suppression of
* the Content-Encoding header sent by ob_gzhandler; by default it
* is left. This should be used for HTTP 304 responses, where you need to
* preserve the Content-Encoding header of the real result, but
* also need to suppress the output of ob_gzhandler to keep to spec
* and avoid breaking Firefox in rare cases where the headers and
* body are broken over two packets.
*
* Note that some PHP configuration options may add output buffer
* layers which cannot be removed; these are left in place.
*
* @param bool $resetGzipEncoding
*/
function
wfResetOutputBuffers
(
$resetGzipEncoding
=
true
)
{
// phpcs:ignore Generic.CodeAnalysis.AssignmentInCondition.FoundInWhileCondition
while
(
$status
=
ob_get_status
()
)
{
if
(
isset
(
$status
[
'flags'
]
)
)
{
$flags
=
PHP_OUTPUT_HANDLER_CLEANABLE
|
PHP_OUTPUT_HANDLER_REMOVABLE
;
$deleteable
=
(
$status
[
'flags'
]
&
$flags
)
===
$flags
;
}
elseif
(
isset
(
$status
[
'del'
]
)
)
{
$deleteable
=
$status
[
'del'
];
}
else
{
// Guess that any PHP-internal setting can't be removed.
$deleteable
=
$status
[
'type'
]
!==
0
;
/* PHP_OUTPUT_HANDLER_INTERNAL */
}
if
(
!
$deleteable
)
{
// Give up, and hope the result doesn't break
// output behavior.
break
;
}
if
(
$status
[
'name'
]
===
'MediaWikiIntegrationTestCase::wfResetOutputBuffersBarrier'
)
{
// Unit testing barrier to prevent this function from breaking PHPUnit.
break
;
}
if
(
!
ob_end_clean
()
)
{
// Could not remove output buffer handler; abort now
// to avoid getting in some kind of infinite loop.
break
;
}
if
(
$resetGzipEncoding
&&
$status
[
'name'
]
==
'ob_gzhandler'
)
{
// Reset the 'Content-Encoding' field set by this handler
// so we can start fresh.
header_remove
(
'Content-Encoding'
);
break
;
}
}
}
/**
* Get a timestamp string in one of various formats
*
* @param mixed $outputtype Output format, one of the TS_* constants. Defaults to
* Unix timestamp.
* @param mixed $ts A timestamp in any supported format. The
* function will autodetect which format is supplied and act accordingly. Use 0 or
* omit to use current time
* @return string|false The date in the specified format, or false on error.
*/
function
wfTimestamp
(
$outputtype
=
TS_UNIX
,
$ts
=
0
)
{
$ret
=
MWTimestamp
::
convert
(
$outputtype
,
$ts
);
if
(
$ret
===
false
)
{
wfDebug
(
"wfTimestamp() fed bogus time value: TYPE=$outputtype; VALUE=$ts"
);
}
return
$ret
;
}
/**
* Return a formatted timestamp, or null if input is null.
* For dealing with nullable timestamp columns in the database.
*
* @param mixed $outputtype
* @param mixed|null $ts
* @return string|false|null Null if called with null, otherwise the result of wfTimestamp()
*/
function
wfTimestampOrNull
(
$outputtype
=
TS_UNIX
,
$ts
=
null
)
{
if
(
$ts
===
null
)
{
return
null
;
}
else
{
return
wfTimestamp
(
$outputtype
,
$ts
);
}
}
/**
* Convenience function; returns MediaWiki timestamp for the present time.
*
* @return string TS_MW timestamp
*/
function
wfTimestampNow
()
{
return
MWTimestamp
::
now
(
TS_MW
);
}
/**
* Tries to get the system directory for temporary files. First
* $wgTmpDirectory is checked, and then the TMPDIR, TMP, and TEMP
* environment variables are then checked in sequence, then
* sys_get_temp_dir(), then upload_tmp_dir from php.ini.
*
* NOTE: When possible, use instead the tmpfile() function to create
* temporary files to avoid race conditions on file creation, etc.
*
* @return string
*/
function
wfTempDir
()
{
global
$wgTmpDirectory
;
if
(
$wgTmpDirectory
!==
false
)
{
return
$wgTmpDirectory
;
}
return
TempFSFile
::
getUsableTempDirectory
();
}
/**
* Make directory, and make all parent directories if they don't exist
*
* @param string $dir Full path to directory to create. Callers should make sure this is not a storage path.
* @param int|null $mode Chmod value to use, default is $wgDirectoryMode
* @param string|null $caller Optional caller param for debugging.
* @return bool
*/
function
wfMkdirParents
(
$dir
,
$mode
=
null
,
$caller
=
null
)
{
global
$wgDirectoryMode
;
if
(
FileBackend
::
isStoragePath
(
$dir
)
)
{
throw
new
LogicException
(
__FUNCTION__
.
" given storage path '$dir'."
);
}
if
(
$caller
!==
null
)
{
wfDebug
(
"$caller: called wfMkdirParents($dir)"
);
}
if
(
strval
(
$dir
)
===
''
)
{
return
true
;
}
$dir
=
str_replace
(
[
'
\\
'
,
'/'
],
DIRECTORY_SEPARATOR
,
$dir
);
$mode
??=
$wgDirectoryMode
;
// Turn off the normal warning, we're doing our own below
// PHP doesn't include the path in its warning message, so we add our own to aid in diagnosis.
//
// Repeat existence check if creation failed so that we silently recover in case of
// a race condition where another request created it since the first check.
//
// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
$ok
=
is_dir
(
$dir
)
||
@
mkdir
(
$dir
,
$mode
,
true
)
||
is_dir
(
$dir
);
if
(
!
$ok
)
{
trigger_error
(
sprintf
(
"failed to mkdir
\"
%s
\"
mode 0%o"
,
$dir
,
$mode
),
E_USER_WARNING
);
}
return
$ok
;
}
/**
* Remove a directory and all its content.
* Does not hide error.
* @param string $dir
*/
function
wfRecursiveRemoveDir
(
$dir
)
{
// taken from https://www.php.net/manual/en/function.rmdir.php#98622
if
(
is_dir
(
$dir
)
)
{
$objects
=
scandir
(
$dir
);
foreach
(
$objects
as
$object
)
{
if
(
$object
!=
"."
&&
$object
!=
".."
)
{
if
(
filetype
(
$dir
.
'/'
.
$object
)
==
"dir"
)
{
wfRecursiveRemoveDir
(
$dir
.
'/'
.
$object
);
}
else
{
unlink
(
$dir
.
'/'
.
$object
);
}
}
}
rmdir
(
$dir
);
}
}
/**
* @param float|int $nr The number to format
* @param int $acc The number of digits after the decimal point, default 2
* @param bool $round Whether or not to round the value, default true
* @return string
*/
function
wfPercent
(
$nr
,
int
$acc
=
2
,
bool
$round
=
true
)
{
$accForFormat
=
$acc
>=
0
?
$acc
:
0
;
$ret
=
sprintf
(
"%.{$accForFormat}f"
,
$nr
);
return
$round
?
round
(
(
float
)
$ret
,
$acc
)
.
'%'
:
"$ret%"
;
}
/**
* Safety wrapper around ini_get() for boolean settings.
* The values returned from ini_get() are pre-normalized for settings
* set via php.ini or php_flag/php_admin_flag... but *not*
* for those set via php_value/php_admin_value.
*
* It's fairly common for people to use php_value instead of php_flag,
* which can leave you with an 'off' setting giving a false positive
* for code that just takes the ini_get() return value as a boolean.
*
* To make things extra interesting, setting via php_value accepts
* "true" and "yes" as true, but php.ini and php_flag consider them false. :)
* Unrecognized values go false... again opposite PHP's own coercion
* from string to bool.
*
* Luckily, 'properly' set settings will always come back as '0' or '1',
* so we only have to worry about them and the 'improper' settings.
*
* I frickin' hate PHP... :P
*
* @param string $setting
* @return bool
*/
function
wfIniGetBool
(
$setting
)
{
return
wfStringToBool
(
ini_get
(
$setting
)
);
}
/**
* Convert string value to boolean, when the following are interpreted as true:
* - on
* - true
* - yes
* - Any number, except 0
* All other strings are interpreted as false.
*
* @param string $val
* @return bool
* @since 1.31
*/
function
wfStringToBool
(
$val
)
{
$val
=
strtolower
(
$val
);
// 'on' and 'true' can't have whitespace around them, but '1' can.
return
$val
==
'on'
||
$val
==
'true'
||
$val
==
'yes'
||
preg_match
(
"/^
\s
*[+-]?0*[1-9]/"
,
$val
);
// approx C atoi() function
}
/**
* Locale-independent version of escapeshellarg()
*
* Originally, this fixed the incorrect use of single quotes on Windows
* (https://bugs.php.net/bug.php?id=26285) and the locale problems on Linux in
* PHP 5.2.6+ (https://bugs.php.net/bug.php?id=54391). The second bug is still
* open as of 2021.
*
* @param string|string[] ...$args strings to escape and glue together,
* or a single array of strings parameter
* @return string
* @deprecated since 1.30 use MediaWiki\Shell\Shell::escape()
*/
function
wfEscapeShellArg
(
...
$args
)
{
return
Shell
::
escape
(
...
$args
);
}
/**
* Execute a shell command, with time and memory limits mirrored from the PHP
* configuration if supported.
*
* @param string|string[] $cmd If string, a properly shell-escaped command line,
* or an array of unescaped arguments, in which case each value will be escaped
* Example: [ 'convert', '-font', 'font name' ] would produce "'convert' '-font' 'font name'"
* @param null|mixed &$retval Optional, will receive the program's exit code.
* (non-zero is usually failure). If there is an error from
* read, select, or proc_open(), this will be set to -1.
* @param array $environ Optional environment variables which should be
* added to the executed command environment.
* @param array $limits Optional array with limits(filesize, memory, time, walltime)
* this overwrites the global wgMaxShell* limits.
* @param array $options Array of options:
* - duplicateStderr: Set this to true to duplicate stderr to stdout,
* including errors from limit.sh
* - profileMethod: By default this function will profile based on the calling
* method. Set this to a string for an alternative method to profile from
* @phan-param array{duplicateStderr?:bool,profileMethod?:string} $options
*
* @return string Collected stdout as a string
* @deprecated since 1.30 use class MediaWiki\Shell\Shell
*/
function
wfShellExec
(
$cmd
,
&
$retval
=
null
,
$environ
=
[],
$limits
=
[],
$options
=
[]
)
{
if
(
Shell
::
isDisabled
()
)
{
$retval
=
1
;
// Backwards compatibility be upon us...
return
'Unable to run external programs, proc_open() is disabled.'
;
}
if
(
is_array
(
$cmd
)
)
{
$cmd
=
Shell
::
escape
(
$cmd
);
}
$includeStderr
=
isset
(
$options
[
'duplicateStderr'
]
)
&&
$options
[
'duplicateStderr'
];
$profileMethod
=
$options
[
'profileMethod'
]
??
wfGetCaller
();
try
{
$result
=
Shell
::
command
(
[]
)
->
unsafeParams
(
(
array
)
$cmd
)
->
environment
(
$environ
)
->
limits
(
$limits
)
->
includeStderr
(
$includeStderr
)
->
profileMethod
(
$profileMethod
)
// For b/c
->
restrict
(
Shell
::
RESTRICT_NONE
)
->
execute
();
}
catch
(
ProcOpenError
$ex
)
{
$retval
=
-
1
;
return
''
;
}
$retval
=
$result
->
getExitCode
();
return
$result
->
getStdout
();
}
/**
* Execute a shell command, returning both stdout and stderr. Convenience
* function, as all the arguments to wfShellExec can become unwieldy.
*
* @note This also includes errors from limit.sh, e.g. if $wgMaxShellFileSize is exceeded.
* @param string|string[] $cmd If string, a properly shell-escaped command line,
* or an array of unescaped arguments, in which case each value will be escaped
* Example: [ 'convert', '-font', 'font name' ] would produce "'convert' '-font' 'font name'"
* @param null|mixed &$retval Optional, will receive the program's exit code.
* (non-zero is usually failure)
* @param array $environ Optional environment variables which should be
* added to the executed command environment.
* @param array $limits Optional array with limits(filesize, memory, time, walltime)
* this overwrites the global wgMaxShell* limits.
* @return string Collected stdout and stderr as a string
* @deprecated since 1.30 use class MediaWiki\Shell\Shell
*/
function
wfShellExecWithStderr
(
$cmd
,
&
$retval
=
null
,
$environ
=
[],
$limits
=
[]
)
{
return
wfShellExec
(
$cmd
,
$retval
,
$environ
,
$limits
,
[
'duplicateStderr'
=>
true
,
'profileMethod'
=>
wfGetCaller
()
]
);
}
/**
* Generate a shell-escaped command line string to run a MediaWiki cli script.
* Note that $parameters should be a flat array and an option with an argument
* should consist of two consecutive items in the array (do not use "--option value").
*
* @deprecated since 1.31, use Shell::makeScriptCommand()
*
* @param string $script MediaWiki cli script path
* @param array $parameters Arguments and options to the script
* @param array $options Associative array of options:
* 'php': The path to the php executable
* 'wrapper': Path to a PHP wrapper to handle the maintenance script
* @phan-param array{php?:string,wrapper?:string} $options
* @return string
*/
function
wfShellWikiCmd
(
$script
,
array
$parameters
=
[],
array
$options
=
[]
)
{
global
$wgPhpCli
;
// Give site config file a chance to run the script in a wrapper.
// The caller may likely want to call wfBasename() on $script.
(
new
HookRunner
(
MediaWikiServices
::
getInstance
()->
getHookContainer
()
)
)
->
onWfShellWikiCmd
(
$script
,
$parameters
,
$options
);
$cmd
=
[
$options
[
'php'
]
??
$wgPhpCli
];
if
(
isset
(
$options
[
'wrapper'
]
)
)
{
$cmd
[]
=
$options
[
'wrapper'
];
}
$cmd
[]
=
$script
;
// Escape each parameter for shell
return
Shell
::
escape
(
array_merge
(
$cmd
,
$parameters
)
);
}
/**
* wfMerge attempts to merge differences between three texts.
*
* @param string $old Common base revision
* @param string $mine The edit we wish to store but which potentially conflicts with another edit
* which happened since we started editing.
* @param string $yours The most recent stored revision of the article. Note that "mine" and "yours"
* might have another meaning depending on the specific use case.
* @param string|null &$simplisticMergeAttempt Automatically merged text, with overlapping edits
* falling back to "my" text.
* @param string|null &$mergeLeftovers Optional out parameter containing an "ed" script with the
* remaining bits of "your" text that could not be merged into $simplisticMergeAttempt.
* The "ed" file format is documented here:
* https://www.gnu.org/software/diffutils/manual/html_node/Detailed-ed.html
* @return bool true for a clean merge and false for failure or a conflict.
*/
function
wfMerge
(
string
$old
,
string
$mine
,
string
$yours
,
?
string
&
$simplisticMergeAttempt
,
?
string
&
$mergeLeftovers
=
null
):
bool
{
global
$wgDiff3
;
# This check may also protect against code injection in
# case of broken installations.
AtEase
::
suppressWarnings
();
$haveDiff3
=
$wgDiff3
&&
file_exists
(
$wgDiff3
);
AtEase
::
restoreWarnings
();
if
(
!
$haveDiff3
)
{
wfDebug
(
"diff3 not found"
);
return
false
;
}
# Make temporary files
$td
=
wfTempDir
();
$oldtextFile
=
fopen
(
$oldtextName
=
tempnam
(
$td
,
'merge-old-'
),
'w'
);
$mytextFile
=
fopen
(
$mytextName
=
tempnam
(
$td
,
'merge-mine-'
),
'w'
);
$yourtextFile
=
fopen
(
$yourtextName
=
tempnam
(
$td
,
'merge-your-'
),
'w'
);
# NOTE: diff3 issues a warning to stderr if any of the files does not end with
# a newline character. To avoid this, we normalize the trailing whitespace before
# creating the diff.
fwrite
(
$oldtextFile
,
rtrim
(
$old
)
.
"
\n
"
);
fclose
(
$oldtextFile
);
fwrite
(
$mytextFile
,
rtrim
(
$mine
)
.
"
\n
"
);
fclose
(
$mytextFile
);
fwrite
(
$yourtextFile
,
rtrim
(
$yours
)
.
"
\n
"
);
fclose
(
$yourtextFile
);
# Check for a conflict
$cmd
=
Shell
::
escape
(
$wgDiff3
,
'--text'
,
'--overlap-only'
,
$mytextName
,
$oldtextName
,
$yourtextName
);
$handle
=
popen
(
$cmd
,
'r'
);
$mergeLeftovers
=
''
;
do
{
$data
=
fread
(
$handle
,
8192
);
if
(
strlen
(
$data
)
==
0
)
{
break
;
}
$mergeLeftovers
.=
$data
;
}
while
(
true
);
pclose
(
$handle
);
$conflict
=
$mergeLeftovers
!==
''
;
# Merge differences automatically where possible, preferring "my" text for conflicts.
$cmd
=
Shell
::
escape
(
$wgDiff3
,
'--text'
,
'--ed'
,
'--merge'
,
$mytextName
,
$oldtextName
,
$yourtextName
);
$handle
=
popen
(
$cmd
,
'r'
);
$simplisticMergeAttempt
=
''
;
do
{
$data
=
fread
(
$handle
,
8192
);
if
(
strlen
(
$data
)
==
0
)
{
break
;
}
$simplisticMergeAttempt
.=
$data
;
}
while
(
true
);
pclose
(
$handle
);
unlink
(
$mytextName
);
unlink
(
$oldtextName
);
unlink
(
$yourtextName
);
if
(
$simplisticMergeAttempt
===
''
&&
$old
!==
''
&&
!
$conflict
)
{
wfDebug
(
"Unexpected null result from diff3. Command: $cmd"
);
$conflict
=
true
;
}
return
!
$conflict
;
}
/**
* Return the final portion of a pathname.
* Reimplemented because PHP5's "basename()" is buggy with multibyte text.
* https://bugs.php.net/bug.php?id=33898
*
* PHP's basename() only considers '\' a pathchar on Windows and Netware.
* We'll consider it so always, as we don't want '\s' in our Unix paths either.
*
* @param string $path
* @param string $suffix String to remove if present
* @return string
*/
function
wfBaseName
(
$path
,
$suffix
=
''
)
{
if
(
$suffix
==
''
)
{
$encSuffix
=
''
;
}
else
{
$encSuffix
=
'(?:'
.
preg_quote
(
$suffix
,
'#'
)
.
')?'
;
}
$matches
=
[];
if
(
preg_match
(
"#([^/
\\\\
]*?){$encSuffix}[/
\\\\
]*$#"
,
$path
,
$matches
)
)
{
return
$matches
[
1
];
}
else
{
return
''
;
}
}
/**
* Generate a relative path name to the given file.
* May explode on non-matching case-insensitive paths,
* funky symlinks, etc.
*
* @param string $path Absolute destination path including target filename
* @param string $from Absolute source path, directory only
* @return string
*/
function
wfRelativePath
(
$path
,
$from
)
{
// Normalize mixed input on Windows...
$path
=
str_replace
(
'/'
,
DIRECTORY_SEPARATOR
,
$path
);
$from
=
str_replace
(
'/'
,
DIRECTORY_SEPARATOR
,
$from
);
// Trim trailing slashes -- fix for drive root
$path
=
rtrim
(
$path
,
DIRECTORY_SEPARATOR
);
$from
=
rtrim
(
$from
,
DIRECTORY_SEPARATOR
);
$pieces
=
explode
(
DIRECTORY_SEPARATOR
,
dirname
(
$path
)
);
$against
=
explode
(
DIRECTORY_SEPARATOR
,
$from
);
if
(
$pieces
[
0
]
!==
$against
[
0
]
)
{
// Non-matching Windows drive letters?
// Return a full path.
return
$path
;
}
// Trim off common prefix
while
(
count
(
$pieces
)
&&
count
(
$against
)
&&
$pieces
[
0
]
==
$against
[
0
]
)
{
array_shift
(
$pieces
);
array_shift
(
$against
);
}
// relative dots to bump us to the parent
while
(
count
(
$against
)
)
{
array_unshift
(
$pieces
,
'..'
);
array_shift
(
$against
);
}
$pieces
[]
=
wfBaseName
(
$path
);
return
implode
(
DIRECTORY_SEPARATOR
,
$pieces
);
}
/**
* Get a Database object.
*
* @param int $db Index of the connection to get. May be DB_PRIMARY for the
* primary (for write queries), DB_REPLICA for potentially lagged read
* queries, or an integer >= 0 for a particular server.
*
* @param string|string[] $groups Query groups. An array of group names that this query
* belongs to. May contain a single string if the query is only
* in one group.
*
* @param string|false $wiki The wiki ID, or false for the current wiki
*
* Note: multiple calls to wfGetDB(DB_REPLICA) during the course of one request
* will always return the same object, unless the underlying connection or load
* balancer is manually destroyed.
*
* Note 2: use $this->getDB() in maintenance scripts that may be invoked by
* updater to ensure that a proper database is being updated.
*
* Note 3: When replacing calls to this with calls to methods on an injected
* LoadBalancer, LoadBalancer::getConnection is more commonly needed than
* LoadBalancer::getMaintenanceConnectionRef, which is needed for more advanced
* administrative tasks. See the IMaintainableDatabase and IDatabase interfaces
* for details.
*
* @deprecated since 1.39, emitting warnings since 1.42; instead, you can use:
* $services = MediaWikiServices::getInstance();
* $dbr = $services->getConnectionProvider()->getReplicaDatabase();
* $dbw = $services->getConnectionProvider()->getPrimaryDatabase();
*
* … or, in rare circumstances, you may need to use:
*
* $services->getDBLoadBalancer()->getConnection() / getMaintenanceConnectionRef()
*
* @return \Wikimedia\Rdbms\DBConnRef
*/
function
wfGetDB
(
$db
,
$groups
=
[],
$wiki
=
false
)
{
wfDeprecated
(
__FUNCTION__
,
'1.39'
);
if
(
$wiki
===
false
)
{
return
MediaWikiServices
::
getInstance
()
->
getDBLoadBalancer
()
->
getMaintenanceConnectionRef
(
$db
,
$groups
,
$wiki
);
}
else
{
return
MediaWikiServices
::
getInstance
()
->
getDBLoadBalancerFactory
()
->
getMainLB
(
$wiki
)
->
getMaintenanceConnectionRef
(
$db
,
$groups
,
$wiki
);
}
}
/**
* Get the URL path to a MediaWiki entry point.
*
* This is a wrapper to respect $wgScript and $wgLoadScript overrides.
*
* @see MW_ENTRY_POINT
* @param string $script Name of entrypoint, without `.php` extension.
* @return string
*/
function
wfScript
(
$script
=
'index'
)
{
global
$wgScriptPath
,
$wgScript
,
$wgLoadScript
;
if
(
$script
===
'index'
)
{
return
$wgScript
;
}
elseif
(
$script
===
'load'
)
{
return
$wgLoadScript
;
}
else
{
return
"{$wgScriptPath}/{$script}.php"
;
}
}
/**
* Convenience function converts boolean values into "true"
* or "false" (string) values
*
* @param bool $value
* @return string
*/
function
wfBoolToStr
(
$value
)
{
return
$value
?
'true'
:
'false'
;
}
/**
* Get a platform-independent path to the null file, e.g. /dev/null
*
* @return string
*/
function
wfGetNull
()
{
return
wfIsWindows
()
?
'NUL'
:
'/dev/null'
;
}
/**
* Replace all invalid characters with '-'.
* Additional characters can be defined in $wgIllegalFileChars (see T22489).
* By default, $wgIllegalFileChars includes ':', '/', '\'.
*
* @param string $name Filename to process
* @return string
*/
function
wfStripIllegalFilenameChars
(
$name
)
{
global
$wgIllegalFileChars
;
$illegalFileChars
=
$wgIllegalFileChars
?
"|["
.
$wgIllegalFileChars
.
"]"
:
''
;
$name
=
preg_replace
(
"/[^"
.
Title
::
legalChars
()
.
"]"
.
$illegalFileChars
.
"/"
,
'-'
,
$name
);
// $wgIllegalFileChars may not include '/' and '\', so we still need to do this
$name
=
wfBaseName
(
$name
);
return
$name
;
}
/**
* Raise PHP's memory limit (if needed).
*
* @internal For use by Setup.php
* @param int $newLimit
*/
function
wfMemoryLimit
(
$newLimit
)
{
$oldLimit
=
wfShorthandToInteger
(
ini_get
(
'memory_limit'
)
);
// If the INI config is already unlimited, there is nothing larger
if
(
$oldLimit
!=
-
1
)
{
$newLimit
=
wfShorthandToInteger
(
(
string
)
$newLimit
);
if
(
$newLimit
==
-
1
)
{
wfDebug
(
"Removing PHP's memory limit"
);
AtEase
::
suppressWarnings
();
ini_set
(
'memory_limit'
,
$newLimit
);
AtEase
::
restoreWarnings
();
}
elseif
(
$newLimit
>
$oldLimit
)
{
wfDebug
(
"Raising PHP's memory limit to $newLimit bytes"
);
AtEase
::
suppressWarnings
();
ini_set
(
'memory_limit'
,
$newLimit
);
AtEase
::
restoreWarnings
();
}
}
}
/**
* Raise the request time limit to $wgTransactionalTimeLimit
*
* @return int Prior time limit
* @since 1.26
*/
function
wfTransactionalTimeLimit
()
{
global
$wgTransactionalTimeLimit
;
$timeout
=
RequestTimeout
::
singleton
();
$timeLimit
=
$timeout
->
getWallTimeLimit
();
if
(
$timeLimit
!==
INF
)
{
// RequestTimeout library is active
if
(
$wgTransactionalTimeLimit
>
$timeLimit
)
{
$timeout
->
setWallTimeLimit
(
$wgTransactionalTimeLimit
);
}
}
else
{
// Fallback case, likely $wgRequestTimeLimit === null
$timeLimit
=
(
int
)
ini_get
(
'max_execution_time'
);
// Note that CLI scripts use 0
if
(
$timeLimit
>
0
&&
$wgTransactionalTimeLimit
>
$timeLimit
)
{
$timeout
->
setWallTimeLimit
(
$wgTransactionalTimeLimit
);
}
}
ignore_user_abort
(
true
);
// ignore client disconnects
return
$timeLimit
;
}
/**
* Converts shorthand byte notation to integer form
*
* @param null|string $string
* @param int $default Returned if $string is empty
* @return int
*/
function
wfShorthandToInteger
(
?
string
$string
=
''
,
int
$default
=
-
1
):
int
{
$string
=
trim
(
$string
??
''
);
if
(
$string
===
''
)
{
return
$default
;
}
$last
=
$string
[
strlen
(
$string
)
-
1
];
$val
=
intval
(
$string
);
switch
(
$last
)
{
case
'g'
:
case
'G'
:
$val
*=
1024
;
// break intentionally missing
case
'm'
:
case
'M'
:
$val
*=
1024
;
// break intentionally missing
case
'k'
:
case
'K'
:
$val
*=
1024
;
}
return
$val
;
}
/**
* Determine input string is represents as infinity
*
* @param string $str The string to determine
* @return bool
* @since 1.25
*/
function
wfIsInfinity
(
$str
)
{
// The INFINITY_VALS are hardcoded elsewhere in MediaWiki (e.g. mediawiki.special.block.js).
return
in_array
(
$str
,
ExpiryDef
::
INFINITY_VALS
);
}
/**
* Returns true if these thumbnail parameters match one that MediaWiki
* requests from file description pages and/or parser output.
*
* $params is considered non-standard if they involve a non-standard
* width or any non-default parameters aside from width and page number.
* The number of possible files with standard parameters is far less than
* that of all combinations; rate-limiting for them can thus be more generous.
*
* @param File $file
* @param array $params
* @return bool
* @since 1.24 Moved from thumb.php to GlobalFunctions in 1.25
*/
function
wfThumbIsStandard
(
File
$file
,
array
$params
)
{
global
$wgThumbLimits
,
$wgImageLimits
,
$wgResponsiveImages
;
$multipliers
=
[
1
];
if
(
$wgResponsiveImages
)
{
// These available sizes are hardcoded currently elsewhere in MediaWiki.
// @see Linker::processResponsiveImages
$multipliers
[]
=
1.5
;
$multipliers
[]
=
2
;
}
$handler
=
$file
->
getHandler
();
if
(
!
$handler
||
!
isset
(
$params
[
'width'
]
)
)
{
return
false
;
}
$basicParams
=
[];
if
(
isset
(
$params
[
'page'
]
)
)
{
$basicParams
[
'page'
]
=
$params
[
'page'
];
}
$thumbLimits
=
[];
$imageLimits
=
[];
// Expand limits to account for multipliers
foreach
(
$multipliers
as
$multiplier
)
{
$thumbLimits
=
array_merge
(
$thumbLimits
,
array_map
(
static
function
(
$width
)
use
(
$multiplier
)
{
return
round
(
$width
*
$multiplier
);
},
$wgThumbLimits
)
);
$imageLimits
=
array_merge
(
$imageLimits
,
array_map
(
static
function
(
$pair
)
use
(
$multiplier
)
{
return
[
round
(
$pair
[
0
]
*
$multiplier
),
round
(
$pair
[
1
]
*
$multiplier
),
];
},
$wgImageLimits
)
);
}
// Check if the width matches one of $wgThumbLimits
if
(
in_array
(
$params
[
'width'
],
$thumbLimits
)
)
{
$normalParams
=
$basicParams
+
[
'width'
=>
$params
[
'width'
]
];
// Append any default values to the map (e.g. "lossy", "lossless", ...)
$handler
->
normaliseParams
(
$file
,
$normalParams
);
}
else
{
// If not, then check if the width matches one of $wgImageLimits
$match
=
false
;
foreach
(
$imageLimits
as
$pair
)
{
$normalParams
=
$basicParams
+
[
'width'
=>
$pair
[
0
],
'height'
=>
$pair
[
1
]
];
// Decide whether the thumbnail should be scaled on width or height.
// Also append any default values to the map (e.g. "lossy", "lossless", ...)
$handler
->
normaliseParams
(
$file
,
$normalParams
);
// Check if this standard thumbnail size maps to the given width
if
(
$normalParams
[
'width'
]
==
$params
[
'width'
]
)
{
$match
=
true
;
break
;
}
}
if
(
!
$match
)
{
return
false
;
// not standard for description pages
}
}
// Check that the given values for non-page, non-width, params are just defaults
foreach
(
$params
as
$key
=>
$value
)
{
if
(
!
isset
(
$normalParams
[
$key
]
)
||
$normalParams
[
$key
]
!=
$value
)
{
return
false
;
}
}
return
true
;
}
/**
* Merges two (possibly) 2 dimensional arrays into the target array ($baseArray).
*
* Values that exist in both values will be combined with += (all values of the array
* of $newValues will be added to the values of the array of $baseArray, while values,
* that exists in both, the value of $baseArray will be used).
*
* @param array $baseArray The array where you want to add the values of $newValues to
* @param array $newValues An array with new values
* @return array The combined array
* @since 1.26
*/
function
wfArrayPlus2d
(
array
$baseArray
,
array
$newValues
)
{
// First merge items that are in both arrays
foreach
(
$baseArray
as
$name
=>
&
$groupVal
)
{
if
(
isset
(
$newValues
[
$name
]
)
)
{
$groupVal
+=
$newValues
[
$name
];
}
}
// Now add items that didn't exist yet
$baseArray
+=
$newValues
;
return
$baseArray
;
}
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