<?php
-# Deal with importing all those nasssty globals and things
-#
+/**
+ * Deal with importing all those nasssty globals and things
+ * @package MediaWiki
+ */
+
# Copyright (C) 2003 Brion Vibber <brion@pobox.com>
# http://www.mediawiki.org/
#
# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# http://www.gnu.org/copyleft/gpl.html
-# Hypothetically, we could use a WebRequest object to fake a
-# self-contained request.
-
-## Enable this to debug total elimination of register_globals
-
+/**
+ * The WebRequest class encapsulates getting at data passed in the
+ * URL or via a POSTed form, handling remove of "magic quotes" slashes,
+ * stripping illegal input characters and normalizing Unicode sequences.
+ *
+ * Usually this is used via a global singleton, $wgRequest. You should
+ * not create a second WebRequest object; make a FauxRequest object if
+ * you want to pass arbitrary data to some function in place of the web
+ * input.
+ *
+ * @package MediaWiki
+ */
class WebRequest {
function WebRequest() {
$this->checkMagicQuotes();
+ global $wgUsePathInfo;
+ if( isset( $_SERVER['PATH_INFO'] ) && ($_SERVER['PATH_INFO'] != '') && $wgUsePathInfo ) {
+ # Stuff it!
+ $_GET['title'] = $_REQUEST['title'] =
+ substr( $_SERVER['PATH_INFO'], 1 );
+ }
}
+ /**
+ * Recursively strips slashes from the given array;
+ * used for undoing the evil that is magic_quotes_gpc.
+ * @param array &$arr will be modified
+ * @return array the original array
+ * @private
+ */
function &fix_magic_quotes( &$arr ) {
foreach( $arr as $key => $val ) {
if( is_array( $val ) ) {
return $arr;
}
+ /**
+ * If magic_quotes_gpc option is on, run the global arrays
+ * through fix_magic_quotes to strip out the stupid dlashes.
+ * WARNING: This should only be done once! Running a second
+ * time could damage the values.
+ * @private
+ */
function checkMagicQuotes() {
if ( get_magic_quotes_gpc() ) {
$this->fix_magic_quotes( $_COOKIE );
}
}
- function getGPCVal( &$arr, $name, $default ) {
- if( isset( $arr[$name] ) ) {
- return $arr[$name];
+ /**
+ * Recursively normalizes UTF-8 strings in the given array.
+ * @param array $data string or array
+ * @return cleaned-up version of the given
+ * @private
+ */
+ function normalizeUnicode( $data ) {
+ if( is_array( $data ) ) {
+ foreach( $data as $key => $val ) {
+ $data[$key] = $this->normalizeUnicode( $val );
+ }
} else {
- return $default;
+ $data = UtfNormal::cleanUp( $data );
}
+ return $data;
}
- function getGPCText( &$arr, $name, $default ) {
- # Text fields may be in an alternate encoding which we should check.
- # Also, strip CRLF line endings down to LF to achieve consistency.
- global $wgLang;
+ /**
+ * Fetch a value from the given array or return $default if it's not set.
+ *
+ * @param array &$arr
+ * @param string $name
+ * @param mixed $default
+ * @return mixed
+ * @private
+ */
+ function getGPCVal( &$arr, $name, $default ) {
if( isset( $arr[$name] ) ) {
- return str_replace( "\r\n", "\n", $wgLang->recodeInput( $arr[$name] ) );
+ global $wgServer, $wgContLang;
+ $data = $arr[$name];
+ if( isset( $_GET[$name] ) &&
+ !is_array( $data ) &&
+ ( empty( $_SERVER['HTTP_REFERER'] ) ||
+ strncmp($wgServer, $_SERVER['HTTP_REFERER'], strlen( $wgServer ) ) ) ) {
+ # For links that came from outside, check for alternate/legacy
+ # character encoding.
+ if( isset( $wgContLang ) ) {
+ $data = $wgContLang->checkTitleEncoding( $data );
+ }
+ }
+ require_once( 'normal/UtfNormal.php' );
+ $data = $this->normalizeUnicode( $data );
+ return $data;
} else {
return $default;
}
}
-
+
+ /**
+ * Fetch a scalar from the input or return $default if it's not set.
+ * Returns a string. Arrays are discarded.
+ *
+ * @param string $name
+ * @param string $default optional default (or NULL)
+ * @return string
+ */
function getVal( $name, $default = NULL ) {
- return $this->getGPCVal( $_REQUEST, $name, $default );
+ $val = $this->getGPCVal( $_REQUEST, $name, $default );
+ if( is_array( $val ) ) {
+ $val = $default;
+ }
+ if( is_null( $val ) ) {
+ return null;
+ } else {
+ return (string)$val;
+ }
}
+ /**
+ * Fetch an array from the input or return $default if it's not set.
+ * If source was scalar, will return an array with a single element.
+ * If no source and no default, returns NULL.
+ *
+ * @param string $name
+ * @param array $default optional default (or NULL)
+ * @return array
+ */
+ function getArray( $name, $default = NULL ) {
+ $val = $this->getGPCVal( $_REQUEST, $name, $default );
+ if( is_null( $val ) ) {
+ return null;
+ } else {
+ return (array)$val;
+ }
+ }
+
+ /**
+ * Fetch an integer value from the input or return $default if not set.
+ * Guaranteed to return an integer; non-numeric input will typically
+ * return 0.
+ * @param string $name
+ * @param int $default
+ * @return int
+ */
function getInt( $name, $default = 0 ) {
return IntVal( $this->getVal( $name, $default ) );
}
+ /**
+ * Fetch a boolean value from the input or return $default if not set.
+ * Guaranteed to return true or false, with normal PHP semantics for
+ * boolean interpretation of strings.
+ * @param string $name
+ * @param bool $default
+ * @return bool
+ */
function getBool( $name, $default = false ) {
return $this->getVal( $name, $default ) ? true : false;
}
+ /**
+ * Return true if the named value is set in the input, whatever that
+ * value is (even "0"). Return false if the named value is not set.
+ * Example use is checking for the presence of check boxes in forms.
+ * @param string $name
+ * @return bool
+ */
function getCheck( $name ) {
# Checkboxes and buttons are only present when clicked
# Presence connotes truth, abscense false
return isset( $val );
}
- function getText( $name, $default = "" ) {
- return $this->getGPCText( $_REQUEST, $name, $default );
+ /**
+ * Fetch a text string from the given array or return $default if it's not
+ * set. \r is stripped from the text, and with some language modules there
+ * is an input transliteration applied. This should generally be used for
+ * form <textarea> and <input> fields.
+ *
+ * @param string $name
+ * @param string $default optional
+ * @return string
+ */
+ function getText( $name, $default = '' ) {
+ global $wgContLang;
+ $val = $this->getVal( $name, $default );
+ return str_replace( "\r\n", "\n",
+ $wgContLang->recodeInput( $val ) );
}
+ /**
+ * Extracts the given named values into an array.
+ * If no arguments are given, returns all input values.
+ * No transformation is performed on the values.
+ */
function getValues() {
$names = func_get_args();
if ( count( $names ) == 0 ) {
return $retVal;
}
+ /**
+ * Returns true if the present request was reached by a POST operation,
+ * false otherwise (GET, HEAD, or command-line).
+ *
+ * Note that values retrieved by the object may come from the
+ * GET URL etc even on a POST request.
+ *
+ * @return bool
+ */
function wasPosted() {
return $_SERVER['REQUEST_METHOD'] == 'POST';
}
+ /**
+ * Returns true if there is a session cookie set.
+ * This does not necessarily mean that the user is logged in!
+ *
+ * @return bool
+ */
function checkSessionCookie() {
- return isset( $_COOKIE[ini_get("session.name")] );
+ return isset( $_COOKIE[ini_get('session.name')] );
}
+ /**
+ * Return the path portion of the request URI.
+ * @return string
+ */
function getRequestURL() {
return $_SERVER['REQUEST_URI'];
}
+ /**
+ * Return the request URI with the canonical service and hostname.
+ * @return string
+ */
function getFullRequestURL() {
global $wgServer;
return $wgServer . $this->getRequestURL();
}
- # Take an arbitrary query and rewrite the present URL to include it
+ /**
+ * Take an arbitrary query and rewrite the present URL to include it
+ * @param string $query Query string fragment; do not include initial '?'
+ * @return string
+ */
function appendQuery( $query ) {
global $wgTitle;
- $basequery = "";
+ $basequery = '';
foreach( $_GET as $var => $val ) {
- if( $var == "title" ) continue;
- $basequery .= "&" . urlencode( $var ) . "=" . urlencode( $val );
+ if( $var == 'title' ) continue;
+ $basequery .= '&' . urlencode( $var ) . '=' . urlencode( $val );
}
- $basequery .= "&" . $query;
+ $basequery .= '&' . $query;
# Trim the extra &
$basequery = substr( $basequery, 1 );
return $wgTitle->getLocalURL( $basequery );
}
+ /**
+ * HTML-safe version of appendQuery().
+ * @param string $query Query string fragment; do not include initial '?'
+ * @return string
+ */
function escapeAppendQuery( $query ) {
return htmlspecialchars( $this->appendQuery( $query ) );
}
+ /**
+ * Check for limit and offset parameters on the input, and return sensible
+ * defaults if not given. The limit must be positive and is capped at 5000.
+ * Offset must be positive but is not capped.
+ *
+ * @param int $deflimit Limit to use if no input and the user hasn't set the option.
+ * @param string $optionname To specify an option other than rclimit to pull from.
+ * @return array first element is limit, second is offset
+ */
+ function getLimitOffset( $deflimit = 50, $optionname = 'rclimit' ) {
+ global $wgUser;
+
+ $limit = $this->getInt( 'limit', 0 );
+ if( $limit < 0 ) $limit = 0;
+ if( ( $limit == 0 ) && ( $optionname != '' ) ) {
+ $limit = (int)$wgUser->getOption( $optionname );
+ }
+ if( $limit <= 0 ) $limit = $deflimit;
+ if( $limit > 5000 ) $limit = 5000; # We have *some* limits...
+
+ $offset = $this->getInt( 'offset', 0 );
+ if( $offset < 0 ) $offset = 0;
+
+ return array( $limit, $offset );
+ }
+
+ /**
+ * Return the path to the temporary file where PHP has stored the upload.
+ * @param string $key
+ * @return string or NULL if no such file.
+ */
+ function getFileTempname( $key ) {
+ if( !isset( $_FILES[$key] ) ) {
+ return NULL;
+ }
+ return $_FILES[$key]['tmp_name'];
+ }
+
+ /**
+ * Return the size of the upload, or 0.
+ * @param string $key
+ * @return integer
+ */
+ function getFileSize( $key ) {
+ if( !isset( $_FILES[$key] ) ) {
+ return 0;
+ }
+ return $_FILES[$key]['size'];
+ }
+
+ /**
+ * Return the original filename of the uploaded file, as reported by
+ * the submitting user agent. HTML-style character entities are
+ * interpreted and normalized to Unicode normalization form C, in part
+ * to deal with weird input from Safari with non-ASCII filenames.
+ *
+ * Other than this the name is not verified for being a safe filename.
+ *
+ * @param string $key
+ * @return string or NULL if no such file.
+ */
+ function getFileName( $key ) {
+ if( !isset( $_FILES[$key] ) ) {
+ return NULL;
+ }
+ $name = $_FILES[$key]['name'];
+
+ # Safari sends filenames in HTML-encoded Unicode form D...
+ # Horrid and evil! Let's try to make some kind of sense of it.
+ $name = Sanitizer::decodeCharReferences( $name );
+ $name = UtfNormal::cleanUp( $name );
+ wfDebug( "WebRequest::getFileName() '" . $_FILES[$key]['name'] . "' normalized to '$name'\n" );
+ return $name;
+ }
+}
+
+/**
+ * WebRequest clone which takes values from a provided array.
+ *
+ * @package MediaWiki
+ */
+class FauxRequest extends WebRequest {
+ var $data = null;
+ var $wasPosted = false;
+
+ function FauxRequest( $data, $wasPosted = false ) {
+ if( is_array( $data ) ) {
+ $this->data = $data;
+ } else {
+ wfDebugDieBacktrace( "FauxRequest() got bogus data" );
+ }
+ $this->wasPosted = $wasPosted;
+ }
+
+ function getVal( $name, $default = NULL ) {
+ return $this->getGPCVal( $this->data, $name, $default );
+ }
+
+ function getText( $name, $default = '' ) {
+ # Override; don't recode since we're using internal data
+ return $this->getVal( $name, $default );
+ }
+
+ function getValues() {
+ return $this->data;
+ }
+
+ function wasPosted() {
+ return $this->wasPosted;
+ }
+
+ function checkSessionCookie() {
+ return false;
+ }
+
+ function getRequestURL() {
+ wfDebugDieBacktrace( 'FauxRequest::getRequestURL() not implemented' );
+ }
+
+ function appendQuery( $query ) {
+ wfDebugDieBacktrace( 'FauxRequest::appendQuery() not implemented' );
+ }
+
}
?>
dépôts / lhc / web / wiklou.git / blobdiff