wiki.techinc.nl/includes/api/ApiBase.php
2009-12-01 01:55:04 +00:00

1080 lines
44 KiB
PHP

<?php
/*
* Created on Sep 5, 2006
*
* API for MediaWiki 1.8+
*
* Copyright (C) 2006 Yuri Astrakhan <Firstname><Lastname>@gmail.com
*
* 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.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
* http://www.gnu.org/copyleft/gpl.html
*/
/**
* This abstract class implements many basic API functions, and is the base of
* all API classes.
* The class functions are divided into several areas of functionality:
*
* Module parameters: Derived classes can define getAllowedParams() to specify
* which parameters to expect,h ow to parse and validate them.
*
* Profiling: various methods to allow keeping tabs on various tasks and their
* time costs
*
* Self-documentation: code to allow the API to document its own state
*
* @ingroup API
*/
abstract class ApiBase {
// These constants allow modules to specify exactly how to treat incoming parameters.
const PARAM_DFLT = 0; // Default value of the parameter
const PARAM_ISMULTI = 1; // Boolean, do we accept more than one item for this parameter (e.g.: titles)?
const PARAM_TYPE = 2; // Can be either a string type (e.g.: 'integer') or an array of allowed values
const PARAM_MAX = 3; // Max value allowed for a parameter. Only applies if TYPE='integer'
const PARAM_MAX2 = 4; // Max value allowed for a parameter for bots and sysops. Only applies if TYPE='integer'
const PARAM_MIN = 5; // Lowest value allowed for a parameter. Only applies if TYPE='integer'
const PARAM_ALLOW_DUPLICATES = 6; // Boolean, do we allow the same value to be set more than once when ISMULTI=true
const PARAM_DEPRECATED = 7; // Boolean, is the parameter deprecated (will show a warning)
const LIMIT_BIG1 = 500; // Fast query, std user limit
const LIMIT_BIG2 = 5000; // Fast query, bot/sysop limit
const LIMIT_SML1 = 50; // Slow query, std user limit
const LIMIT_SML2 = 500; // Slow query, bot/sysop limit
private $mMainModule, $mModuleName, $mModulePrefix;
/**
* Constructor
* @param $mainModule ApiMain object
* @param $moduleName string Name of this module
* @param $modulePrefix string Prefix to use for parameter names
*/
public function __construct($mainModule, $moduleName, $modulePrefix = '') {
$this->mMainModule = $mainModule;
$this->mModuleName = $moduleName;
$this->mModulePrefix = $modulePrefix;
}
/*****************************************************************************
* ABSTRACT METHODS *
*****************************************************************************/
/**
* Evaluates the parameters, performs the requested query, and sets up
* the result. Concrete implementations of ApiBase must override this
* method to provide whatever functionality their module offers.
* Implementations must not produce any output on their own and are not
* expected to handle any errors.
*
* The execute() method will be invoked directly by ApiMain immediately
* before the result of the module is output. Aside from the
* constructor, implementations should assume that no other methods
* will be called externally on the module before the result is
* processed.
*
* The result data should be stored in the ApiResult object available
* through getResult().
*/
public abstract function execute();
/**
* Returns a string that identifies the version of the extending class.
* Typically includes the class name, the svn revision, timestamp, and
* last author. Usually done with SVN's Id keyword
* @return string
*/
public abstract function getVersion();
/**
* Get the name of the module being executed by this instance
* @return string
*/
public function getModuleName() {
return $this->mModuleName;
}
/**
* Get parameter prefix (usually two letters or an empty string).
* @return string
*/
public function getModulePrefix() {
return $this->mModulePrefix;
}
/**
* Get the name of the module as shown in the profiler log
* @return string
*/
public function getModuleProfileName($db = false) {
if ($db)
return 'API:' . $this->mModuleName . '-DB';
else
return 'API:' . $this->mModuleName;
}
/**
* Get the main module
* @return ApiMain object
*/
public function getMain() {
return $this->mMainModule;
}
/**
* Returns true if this module is the main module ($this === $this->mMainModule),
* false otherwise.
* @return bool
*/
public function isMain() {
return $this === $this->mMainModule;
}
/**
* Get the result object
* @return ApiResult
*/
public function getResult() {
// Main module has getResult() method overriden
// Safety - avoid infinite loop:
if ($this->isMain())
ApiBase :: dieDebug(__METHOD__, 'base method was called on main module. ');
return $this->getMain()->getResult();
}
/**
* Get the result data array (read-only)
* @return array
*/
public function getResultData() {
return $this->getResult()->getData();
}
/**
* Set warning section for this module. Users should monitor this
* section to notice any changes in API. Multiple calls to this
* function will result in the warning messages being separated by
* newlines
* @param $warning string Warning message
*/
public function setWarning($warning) {
$data = $this->getResult()->getData();
if(isset($data['warnings'][$this->getModuleName()]))
{
# Don't add duplicate warnings
$warn_regex = preg_quote($warning, '/');
if(preg_match("/{$warn_regex}(\\n|$)/", $data['warnings'][$this->getModuleName()]['*']))
return;
$oldwarning = $data['warnings'][$this->getModuleName()]['*'];
# If there is a warning already, append it to the existing one
$warning = "$oldwarning\n$warning";
$this->getResult()->unsetValue('warnings', $this->getModuleName());
}
$msg = array();
ApiResult :: setContent($msg, $warning);
$this->getResult()->disableSizeCheck();
$this->getResult()->addValue('warnings', $this->getModuleName(), $msg);
$this->getResult()->enableSizeCheck();
}
/**
* If the module may only be used with a certain format module,
* it should override this method to return an instance of that formatter.
* A value of null means the default format will be used.
* @return mixed instance of a derived class of ApiFormatBase, or null
*/
public function getCustomPrinter() {
return null;
}
/**
* Generates help message for this module, or false if there is no description
* @return mixed string or false
*/
public function makeHelpMsg() {
static $lnPrfx = "\n ";
$msg = $this->getDescription();
if ($msg !== false) {
if (!is_array($msg))
$msg = array (
$msg
);
$msg = $lnPrfx . implode($lnPrfx, $msg) . "\n";
if ($this->isReadMode())
$msg .= "\nThis module requires read rights.";
if ($this->isWriteMode())
$msg .= "\nThis module requires write rights.";
if ($this->mustBePosted())
$msg .= "\nThis module only accepts POST requests.";
if ($this->isReadMode() || $this->isWriteMode() ||
$this->mustBePosted())
$msg .= "\n";
// Parameters
$paramsMsg = $this->makeHelpMsgParameters();
if ($paramsMsg !== false) {
$msg .= "Parameters:\n$paramsMsg";
}
// Examples
$examples = $this->getExamples();
if ($examples !== false) {
if (!is_array($examples))
$examples = array (
$examples
);
$msg .= 'Example' . (count($examples) > 1 ? 's' : '') . ":\n ";
$msg .= implode($lnPrfx, $examples) . "\n";
}
if ($this->getMain()->getShowVersions()) {
$versions = $this->getVersion();
$pattern = '/(\$.*) ([0-9a-z_]+\.php) (.*\$)/i';
$callback = array($this, 'makeHelpMsg_callback');
if (is_array($versions)) {
foreach ($versions as &$v)
$v = preg_replace_callback($pattern, $callback, $v);
$versions = implode("\n ", $versions);
}
else
$versions = preg_replace_callback($pattern, $callback, $versions);
$msg .= "Version:\n $versions\n";
}
}
return $msg;
}
/**
* Generates the parameter descriptions for this module, to be displayed in the
* module's help.
* @return string
*/
public function makeHelpMsgParameters() {
$params = $this->getFinalParams();
if ( $params ) {
$paramsDescription = $this->getFinalParamDescription();
$msg = '';
$paramPrefix = "\n" . str_repeat(' ', 19);
foreach ($params as $paramName => $paramSettings) {
$desc = isset ($paramsDescription[$paramName]) ? $paramsDescription[$paramName] : '';
if (is_array($desc))
$desc = implode($paramPrefix, $desc);
$deprecated = isset( $paramSettings[self :: PARAM_DEPRECATED] ) ?
$paramSettings[self :: PARAM_DEPRECATED] : false;
if( $deprecated )
$desc = "DEPRECATED! $desc";
$type = isset($paramSettings[self :: PARAM_TYPE])? $paramSettings[self :: PARAM_TYPE] : null;
if (isset ($type)) {
if (isset ($paramSettings[self :: PARAM_ISMULTI]))
$prompt = 'Values (separate with \'|\'): ';
else
$prompt = 'One value: ';
if (is_array($type)) {
$choices = array();
$nothingPrompt = false;
foreach ($type as $t)
if ($t === '')
$nothingPrompt = 'Can be empty, or ';
else
$choices[] = $t;
$desc .= $paramPrefix . $nothingPrompt . $prompt . implode(', ', $choices);
} else {
switch ($type) {
case 'namespace':
// Special handling because namespaces are type-limited, yet they are not given
$desc .= $paramPrefix . $prompt . implode(', ', ApiBase :: getValidNamespaces());
break;
case 'limit':
$desc .= $paramPrefix . "No more than {$paramSettings[self :: PARAM_MAX]} ({$paramSettings[self :: PARAM_MAX2]} for bots) allowed.";
break;
case 'integer':
$hasMin = isset($paramSettings[self :: PARAM_MIN]);
$hasMax = isset($paramSettings[self :: PARAM_MAX]);
if ($hasMin || $hasMax) {
if (!$hasMax)
$intRangeStr = "The value must be no less than {$paramSettings[self :: PARAM_MIN]}";
elseif (!$hasMin)
$intRangeStr = "The value must be no more than {$paramSettings[self :: PARAM_MAX]}";
else
$intRangeStr = "The value must be between {$paramSettings[self :: PARAM_MIN]} and {$paramSettings[self :: PARAM_MAX]}";
$desc .= $paramPrefix . $intRangeStr;
}
break;
}
}
}
$default = is_array($paramSettings) ? (isset ($paramSettings[self :: PARAM_DFLT]) ? $paramSettings[self :: PARAM_DFLT] : null) : $paramSettings;
if (!is_null($default) && $default !== false)
$desc .= $paramPrefix . "Default: $default";
$msg .= sprintf(" %-14s - %s\n", $this->encodeParamName($paramName), $desc);
}
return $msg;
} else
return false;
}
/**
* Callback for preg_replace_callback() call in makeHelpMsg().
* Replaces a source file name with a link to ViewVC
*/
public function makeHelpMsg_callback($matches) {
global $wgAutoloadClasses, $wgAutoloadLocalClasses;
if(isset($wgAutoloadLocalClasses[get_class($this)]))
$file = $wgAutoloadLocalClasses[get_class($this)];
else if(isset($wgAutoloadClasses[get_class($this)]))
$file = $wgAutoloadClasses[get_class($this)];
// Do some guesswork here
$path = strstr($file, 'includes/api/');
if($path === false)
$path = strstr($file, 'extensions/');
else
$path = 'phase3/' . $path;
// Get the filename from $matches[2] instead of $file
// If they're not the same file, they're assumed to be in the
// same directory
// This is necessary to make stuff like ApiMain::getVersion()
// returning the version string for ApiBase work
if($path)
return "{$matches[0]}\n http://svn.wikimedia.org/" .
"viewvc/mediawiki/trunk/" . dirname($path) .
"/{$matches[2]}";
return $matches[0];
}
/**
* Returns the description string for this module
* @return mixed string or array of strings
*/
protected function getDescription() {
return false;
}
/**
* Returns usage examples for this module. Return null if no examples are available.
* @return mixed string or array of strings
*/
protected function getExamples() {
return false;
}
/**
* Returns an array of allowed parameters (parameter name) => (default
* value) or (parameter name) => (array with PARAM_* constants as keys)
* Don't call this function directly: use getFinalParams() to allow
* hooks to modify parameters as needed.
* @return array
*/
protected function getAllowedParams() {
return false;
}
/**
* Returns an array of parameter descriptions.
* Don't call this functon directly: use getFinalParamDescription() to
* allow hooks to modify descriptions as needed.
* @return array
*/
protected function getParamDescription() {
return false;
}
/**
* Get final list of parameters, after hooks have had a chance to
* tweak it as needed.
* @return array
*/
public function getFinalParams() {
$params = $this->getAllowedParams();
wfRunHooks('APIGetAllowedParams', array(&$this, &$params));
return $params;
}
/**
* Get final description, after hooks have had a chance to tweak it as
* needed.
* @return array
*/
public function getFinalParamDescription() {
$desc = $this->getParamDescription();
wfRunHooks('APIGetParamDescription', array(&$this, &$desc));
return $desc;
}
/**
* This method mangles parameter name based on the prefix supplied to the constructor.
* Override this method to change parameter name during runtime
* @param $paramName string Parameter name
* @return string Prefixed parameter name
*/
public function encodeParamName($paramName) {
return $this->mModulePrefix . $paramName;
}
/**
* Using getAllowedParams(), this function makes an array of the values
* provided by the user, with key being the name of the variable, and
* value - validated value from user or default. limits will not be
* parsed if $parseLimit is set to false; use this when the max
* limit is not definitive yet, e.g. when getting revisions.
* @param $parseLimit bool
* @return array
*/
public function extractRequestParams($parseLimit = true) {
$params = $this->getFinalParams();
$results = array ();
foreach ($params as $paramName => $paramSettings)
$results[$paramName] = $this->getParameterFromSettings($paramName, $paramSettings, $parseLimit);
return $results;
}
/**
* Get a value for the given parameter
* @param $paramName string Parameter name
* @param $parseLimit bool see extractRequestParams()
* @return mixed Parameter value
*/
protected function getParameter($paramName, $parseLimit = true) {
$params = $this->getFinalParams();
$paramSettings = $params[$paramName];
return $this->getParameterFromSettings($paramName, $paramSettings, $parseLimit);
}
/**
* Die if none or more than one of a certain set of parameters is set
* @param $params array of parameter names
*/
public function requireOnlyOneParameter($params) {
$required = func_get_args();
array_shift($required);
$intersection = array_intersect(array_keys(array_filter($params,
create_function('$x', 'return !is_null($x);')
)), $required);
if (count($intersection) > 1) {
$this->dieUsage('The parameters '.implode(', ', $intersection).' can not be used together', 'invalidparammix');
} elseif (count($intersection) == 0) {
$this->dieUsage('One of the parameters '.implode(', ', $required).' is required', 'missingparam');
}
}
/**
* Returns an array of the namespaces (by integer id) that exist on the
* wiki. Used primarily in help documentation.
* @return array
*/
public static function getValidNamespaces() {
static $mValidNamespaces = null;
if (is_null($mValidNamespaces)) {
global $wgContLang;
$mValidNamespaces = array ();
foreach (array_keys($wgContLang->getNamespaces()) as $ns) {
if ($ns >= 0)
$mValidNamespaces[] = $ns;
}
}
return $mValidNamespaces;
}
/**
* Using the settings determine the value for the given parameter
*
* @param $paramName String: parameter name
* @param $paramSettings Mixed: default value or an array of settings
* using PARAM_* constants.
* @param $parseLimit Boolean: parse limit?
* @return mixed Parameter value
*/
protected function getParameterFromSettings($paramName, $paramSettings, $parseLimit) {
// Some classes may decide to change parameter names
$encParamName = $this->encodeParamName($paramName);
if (!is_array($paramSettings)) {
$default = $paramSettings;
$multi = false;
$type = gettype($paramSettings);
$dupes = false;
$deprecated = false;
} else {
$default = isset ($paramSettings[self :: PARAM_DFLT]) ? $paramSettings[self :: PARAM_DFLT] : null;
$multi = isset ($paramSettings[self :: PARAM_ISMULTI]) ? $paramSettings[self :: PARAM_ISMULTI] : false;
$type = isset ($paramSettings[self :: PARAM_TYPE]) ? $paramSettings[self :: PARAM_TYPE] : null;
$dupes = isset ($paramSettings[self:: PARAM_ALLOW_DUPLICATES]) ? $paramSettings[self :: PARAM_ALLOW_DUPLICATES] : false;
$deprecated = isset ($paramSettings[self:: PARAM_DEPRECATED]) ? $paramSettings[self :: PARAM_DEPRECATED] : false;
// When type is not given, and no choices, the type is the same as $default
if (!isset ($type)) {
if (isset ($default))
$type = gettype($default);
else
$type = 'NULL'; // allow everything
}
}
if ($type == 'boolean') {
if (isset ($default) && $default !== false) {
// Having a default value of anything other than 'false' is pointless
ApiBase :: dieDebug(__METHOD__, "Boolean param $encParamName's default is set to '$default'");
}
$value = $this->getMain()->getRequest()->getCheck($encParamName);
} else {
$value = $this->getMain()->getRequest()->getVal($encParamName, $default);
if (isset ($value) && $type == 'namespace')
$type = ApiBase :: getValidNamespaces();
}
if (isset ($value) && ($multi || is_array($type)))
$value = $this->parseMultiValue($encParamName, $value, $multi, is_array($type) ? $type : null);
// More validation only when choices were not given
// choices were validated in parseMultiValue()
if (isset ($value)) {
if (!is_array($type)) {
switch ($type) {
case 'NULL' : // nothing to do
break;
case 'string' : // nothing to do
break;
case 'integer' : // Force everything using intval() and optionally validate limits
$value = is_array($value) ? array_map('intval', $value) : intval($value);
$min = isset ($paramSettings[self :: PARAM_MIN]) ? $paramSettings[self :: PARAM_MIN] : null;
$max = isset ($paramSettings[self :: PARAM_MAX]) ? $paramSettings[self :: PARAM_MAX] : null;
if (!is_null($min) || !is_null($max)) {
$values = is_array($value) ? $value : array($value);
foreach ($values as &$v) {
$this->validateLimit($paramName, $v, $min, $max);
}
}
break;
case 'limit' :
if ( !$parseLimit )
// Don't do any validation whatsoever
break;
if (!isset ($paramSettings[self :: PARAM_MAX]) || !isset ($paramSettings[self :: PARAM_MAX2]))
ApiBase :: dieDebug(__METHOD__, "MAX1 or MAX2 are not defined for the limit $encParamName");
if ($multi)
ApiBase :: dieDebug(__METHOD__, "Multi-values not supported for $encParamName");
$min = isset ($paramSettings[self :: PARAM_MIN]) ? $paramSettings[self :: PARAM_MIN] : 0;
if( $value == 'max' ) {
$value = $this->getMain()->canApiHighLimits() ? $paramSettings[self :: PARAM_MAX2] : $paramSettings[self :: PARAM_MAX];
$this->getResult()->addValue( 'limits', $this->getModuleName(), $value );
}
else {
$value = intval($value);
$this->validateLimit($paramName, $value, $min, $paramSettings[self :: PARAM_MAX], $paramSettings[self :: PARAM_MAX2]);
}
break;
case 'boolean' :
if ($multi)
ApiBase :: dieDebug(__METHOD__, "Multi-values not supported for $encParamName");
break;
case 'timestamp' :
if ($multi)
ApiBase :: dieDebug(__METHOD__, "Multi-values not supported for $encParamName");
$value = wfTimestamp(TS_UNIX, $value);
if ($value === 0)
$this->dieUsage("Invalid value '$value' for timestamp parameter $encParamName", "badtimestamp_{$encParamName}");
$value = wfTimestamp(TS_MW, $value);
break;
case 'user' :
$title = Title::makeTitleSafe( NS_USER, $value );
if ( is_null( $title ) )
$this->dieUsage("Invalid value for user parameter $encParamName", "baduser_{$encParamName}");
$value = $title->getText();
break;
default :
ApiBase :: dieDebug(__METHOD__, "Param $encParamName's type is unknown - $type");
}
}
// Throw out duplicates if requested
if (is_array($value) && !$dupes)
$value = array_unique($value);
// Set a warning if a deprecated parameter has been passed
if( $deprecated ) {
$this->setWarning( "The $encParamName parameter has been deprecated." );
}
}
return $value;
}
/**
* Return an array of values that were given in a 'a|b|c' notation,
* after it optionally validates them against the list allowed values.
*
* @param $valueName string The name of the parameter (for error
* reporting)
* @param $value mixed The value being parsed
* @param $allowMultiple bool Can $value contain more than one value
* separated by '|'?
* @param $allowedValues mixed An array of values to check against. If
* null, all values are accepted.
* @return mixed (allowMultiple ? an_array_of_values : a_single_value)
*/
protected function parseMultiValue($valueName, $value, $allowMultiple, $allowedValues) {
if( trim($value) === "" && $allowMultiple)
return array();
$sizeLimit = $this->mMainModule->canApiHighLimits() ? self::LIMIT_SML2 : self::LIMIT_SML1;
$valuesList = explode('|', $value, $sizeLimit + 1);
if( self::truncateArray($valuesList, $sizeLimit) ) {
$this->setWarning("Too many values supplied for parameter '$valueName': the limit is $sizeLimit");
}
if (!$allowMultiple && count($valuesList) != 1) {
$possibleValues = is_array($allowedValues) ? "of '" . implode("', '", $allowedValues) . "'" : '';
$this->dieUsage("Only one $possibleValues is allowed for parameter '$valueName'", "multival_$valueName");
}
if (is_array($allowedValues)) {
# Check for unknown values
$unknown = array_diff($valuesList, $allowedValues);
if(count($unknown))
{
if($allowMultiple)
{
$s = count($unknown) > 1 ? "s" : "";
$vals = implode(", ", $unknown);
$this->setWarning("Unrecognized value$s for parameter '$valueName': $vals");
}
else
$this->dieUsage("Unrecognized value for parameter '$valueName': {$valuesList[0]}", "unknown_$valueName");
}
# Now throw them out
$valuesList = array_intersect($valuesList, $allowedValues);
}
return $allowMultiple ? $valuesList : $valuesList[0];
}
/**
* Validate the value against the minimum and user/bot maximum limits.
* Prints usage info on failure.
* @param $paramName string Parameter name
* @param $value int Parameter value
* @param $min int Minimum value
* @param $max int Maximum value for users
* @param $botMax int Maximum value for sysops/bots
*/
function validateLimit($paramName, &$value, $min, $max, $botMax = null) {
if (!is_null($min) && $value < $min) {
$this->setWarning($this->encodeParamName($paramName) . " may not be less than $min (set to $value)");
$value = $min;
}
// Minimum is always validated, whereas maximum is checked only if not running in internal call mode
if ($this->getMain()->isInternalMode())
return;
// Optimization: do not check user's bot status unless really needed -- skips db query
// assumes $botMax >= $max
if (!is_null($max) && $value > $max) {
if (!is_null($botMax) && $this->getMain()->canApiHighLimits()) {
if ($value > $botMax) {
$this->setWarning($this->encodeParamName($paramName) . " may not be over $botMax (set to $value) for bots or sysops");
$value = $botMax;
}
} else {
$this->setWarning($this->encodeParamName($paramName) . " may not be over $max (set to $value) for users");
$value = $max;
}
}
}
/**
* Truncate an array to a certain length.
* @param $arr array Array to truncate
* @param $limit int Maximum length
* @return bool True if the array was truncated, false otherwise
*/
public static function truncateArray(&$arr, $limit)
{
$modified = false;
while(count($arr) > $limit)
{
$junk = array_pop($arr);
$modified = true;
}
return $modified;
}
/**
* Throw a UsageException, which will (if uncaught) call the main module's
* error handler and die with an error message.
*
* @param $description string One-line human-readable description of the
* error condition, e.g., "The API requires a valid action parameter"
* @param $errorCode string Brief, arbitrary, stable string to allow easy
* automated identification of the error, e.g., 'unknown_action'
* @param $httpRespCode int HTTP response code
* @param $extradata array Data to add to the <error> element; array in ApiResult format
*/
public function dieUsage($description, $errorCode, $httpRespCode = 0, $extradata = null) {
wfProfileClose();
throw new UsageException($description, $this->encodeParamName($errorCode), $httpRespCode, $extradata);
}
/**
* Array that maps message keys to error messages. $1 and friends are replaced.
*/
public static $messageMap = array(
// This one MUST be present, or dieUsageMsg() will recurse infinitely
'unknownerror' => array('code' => 'unknownerror', 'info' => "Unknown error: ``\$1''"),
'unknownerror-nocode' => array('code' => 'unknownerror', 'info' => 'Unknown error'),
// Messages from Title::getUserPermissionsErrors()
'ns-specialprotected' => array('code' => 'unsupportednamespace', 'info' => "Pages in the Special namespace can't be edited"),
'protectedinterface' => array('code' => 'protectednamespace-interface', 'info' => "You're not allowed to edit interface messages"),
'namespaceprotected' => array('code' => 'protectednamespace', 'info' => "You're not allowed to edit pages in the ``\$1'' namespace"),
'customcssjsprotected' => array('code' => 'customcssjsprotected', 'info' => "You're not allowed to edit custom CSS and JavaScript pages"),
'cascadeprotected' => array('code' => 'cascadeprotected', 'info' =>"The page you're trying to edit is protected because it's included in a cascade-protected page"),
'protectedpagetext' => array('code' => 'protectedpage', 'info' => "The ``\$1'' right is required to edit this page"),
'protect-cantedit' => array('code' => 'cantedit', 'info' => "You can't protect this page because you can't edit it"),
'badaccess-group0' => array('code' => 'permissiondenied', 'info' => "Permission denied"), // Generic permission denied message
'badaccess-groups' => array('code' => 'permissiondenied', 'info' => "Permission denied"),
'titleprotected' => array('code' => 'protectedtitle', 'info' => "This title has been protected from creation"),
'nocreate-loggedin' => array('code' => 'cantcreate', 'info' => "You don't have permission to create new pages"),
'nocreatetext' => array('code' => 'cantcreate-anon', 'info' => "Anonymous users can't create new pages"),
'movenologintext' => array('code' => 'cantmove-anon', 'info' => "Anonymous users can't move pages"),
'movenotallowed' => array('code' => 'cantmove', 'info' => "You don't have permission to move pages"),
'confirmedittext' => array('code' => 'confirmemail', 'info' => "You must confirm your e-mail address before you can edit"),
'blockedtext' => array('code' => 'blocked', 'info' => "You have been blocked from editing"),
'autoblockedtext' => array('code' => 'autoblocked', 'info' => "Your IP address has been blocked automatically, because it was used by a blocked user"),
// Miscellaneous interface messages
'actionthrottledtext' => array('code' => 'ratelimited', 'info' => "You've exceeded your rate limit. Please wait some time and try again"),
'alreadyrolled' => array('code' => 'alreadyrolled', 'info' => "The page you tried to rollback was already rolled back"),
'cantrollback' => array('code' => 'onlyauthor', 'info' => "The page you tried to rollback only has one author"),
'readonlytext' => array('code' => 'readonly', 'info' => "The wiki is currently in read-only mode"),
'sessionfailure' => array('code' => 'badtoken', 'info' => "Invalid token"),
'cannotdelete' => array('code' => 'cantdelete', 'info' => "Couldn't delete ``\$1''. Maybe it was deleted already by someone else"),
'notanarticle' => array('code' => 'missingtitle', 'info' => "The page you requested doesn't exist"),
'selfmove' => array('code' => 'selfmove', 'info' => "Can't move a page to itself"),
'immobile_namespace' => array('code' => 'immobilenamespace', 'info' => "You tried to move pages from or to a namespace that is protected from moving"),
'articleexists' => array('code' => 'articleexists', 'info' => "The destination article already exists and is not a redirect to the source article"),
'protectedpage' => array('code' => 'protectedpage', 'info' => "You don't have permission to perform this move"),
'hookaborted' => array('code' => 'hookaborted', 'info' => "The modification you tried to make was aborted by an extension hook"),
'cantmove-titleprotected' => array('code' => 'protectedtitle', 'info' => "The destination article has been protected from creation"),
'imagenocrossnamespace' => array('code' => 'nonfilenamespace', 'info' => "Can't move a file to a non-file namespace"),
'imagetypemismatch' => array('code' => 'filetypemismatch', 'info' => "The new file extension doesn't match its type"),
// 'badarticleerror' => shouldn't happen
// 'badtitletext' => shouldn't happen
'ip_range_invalid' => array('code' => 'invalidrange', 'info' => "Invalid IP range"),
'range_block_disabled' => array('code' => 'rangedisabled', 'info' => "Blocking IP ranges has been disabled"),
'nosuchusershort' => array('code' => 'nosuchuser', 'info' => "The user you specified doesn't exist"),
'badipaddress' => array('code' => 'invalidip', 'info' => "Invalid IP address specified"),
'ipb_expiry_invalid' => array('code' => 'invalidexpiry', 'info' => "Invalid expiry time"),
'ipb_already_blocked' => array('code' => 'alreadyblocked', 'info' => "The user you tried to block was already blocked"),
'ipb_blocked_as_range' => array('code' => 'blockedasrange', 'info' => "IP address ``\$1'' was blocked as part of range ``\$2''. You can't unblock the IP invidually, but you can unblock the range as a whole."),
'ipb_cant_unblock' => array('code' => 'cantunblock', 'info' => "The block you specified was not found. It may have been unblocked already"),
'mailnologin' => array('code' => 'cantsend', 'info' => "You are not logged in, you do not have a confirmed e-mail address, or you are not allowed to send e-mail to other users, so you cannot send e-mail"),
'usermaildisabled' => array('code' => 'usermaildisabled', 'info' => "User email has been disabled"),
'blockedemailuser' => array('code' => 'blockedfrommail', 'info' => "You have been blocked from sending e-mail"),
'notarget' => array('code' => 'notarget', 'info' => "You have not specified a valid target for this action"),
'noemail' => array('code' => 'noemail', 'info' => "The user has not specified a valid e-mail address, or has chosen not to receive e-mail from other users"),
'rcpatroldisabled' => array('code' => 'patroldisabled', 'info' => "Patrolling is disabled on this wiki"),
'markedaspatrollederror-noautopatrol' => array('code' => 'noautopatrol', 'info' => "You don't have permission to patrol your own changes"),
'delete-toobig' => array('code' => 'bigdelete', 'info' => "You can't delete this page because it has more than \$1 revisions"),
'movenotallowedfile' => array('code' => 'cantmovefile', 'info' => "You don't have permission to move files"),
'userrights-no-interwiki' => array('code' => 'nointerwikiuserrights', 'info' => "You don't have permission to change user rights on other wikis"),
'userrights-nodatabase' => array('code' => 'nosuchdatabase', 'info' => "Database ``\$1'' does not exist or is not local"),
'nouserspecified' => array('code' => 'invaliduser', 'info' => "Invalid username ``\$1''"),
'noname' => array('code' => 'invaliduser', 'info' => "Invalid username ``\$1''"),
// API-specific messages
'readrequired' => array('code' => 'readapidenied', 'info' => "You need read permission to use this module"),
'writedisabled' => array('code' => 'noapiwrite', 'info' => "Editing of this wiki through the API is disabled. Make sure the \$wgEnableWriteAPI=true; statement is included in the wiki's LocalSettings.php file"),
'writerequired' => array('code' => 'writeapidenied', 'info' => "You're not allowed to edit this wiki through the API"),
'missingparam' => array('code' => 'no$1', 'info' => "The \$1 parameter must be set"),
'invalidtitle' => array('code' => 'invalidtitle', 'info' => "Bad title ``\$1''"),
'nosuchpageid' => array('code' => 'nosuchpageid', 'info' => "There is no page with ID \$1"),
'nosuchrevid' => array('code' => 'nosuchrevid', 'info' => "There is no revision with ID \$1"),
'nosuchuser' => array('code' => 'nosuchuser', 'info' => "User ``\$1'' doesn't exist"),
'invaliduser' => array('code' => 'invaliduser', 'info' => "Invalid username ``\$1''"),
'invalidexpiry' => array('code' => 'invalidexpiry', 'info' => "Invalid expiry time ``\$1''"),
'pastexpiry' => array('code' => 'pastexpiry', 'info' => "Expiry time ``\$1'' is in the past"),
'create-titleexists' => array('code' => 'create-titleexists', 'info' => "Existing titles can't be protected with 'create'"),
'missingtitle-createonly' => array('code' => 'missingtitle-createonly', 'info' => "Missing titles can only be protected with 'create'"),
'cantblock' => array('code' => 'cantblock', 'info' => "You don't have permission to block users"),
'canthide' => array('code' => 'canthide', 'info' => "You don't have permission to hide user names from the block log"),
'cantblock-email' => array('code' => 'cantblock-email', 'info' => "You don't have permission to block users from sending e-mail through the wiki"),
'unblock-notarget' => array('code' => 'notarget', 'info' => "Either the id or the user parameter must be set"),
'unblock-idanduser' => array('code' => 'idanduser', 'info' => "The id and user parameters can't be used together"),
'cantunblock' => array('code' => 'permissiondenied', 'info' => "You don't have permission to unblock users"),
'cannotundelete' => array('code' => 'cantundelete', 'info' => "Couldn't undelete: the requested revisions may not exist, or may have been undeleted already"),
'permdenied-undelete' => array('code' => 'permissiondenied', 'info' => "You don't have permission to restore deleted revisions"),
'createonly-exists' => array('code' => 'articleexists', 'info' => "The article you tried to create has been created already"),
'nocreate-missing' => array('code' => 'missingtitle', 'info' => "The article you tried to edit doesn't exist"),
'nosuchrcid' => array('code' => 'nosuchrcid', 'info' => "There is no change with rcid ``\$1''"),
'cantpurge' => array('code' => 'cantpurge', 'info' => "Only users with the 'purge' right can purge pages via the API"),
'protect-invalidaction' => array('code' => 'protect-invalidaction', 'info' => "Invalid protection type ``\$1''"),
'protect-invalidlevel' => array('code' => 'protect-invalidlevel', 'info' => "Invalid protection level ``\$1''"),
'toofewexpiries' => array('code' => 'toofewexpiries', 'info' => "\$1 expiry timestamps were provided where \$2 were needed"),
'cantimport' => array('code' => 'cantimport', 'info' => "You don't have permission to import pages"),
'cantimport-upload' => array('code' => 'cantimport-upload', 'info' => "You don't have permission to import uploaded pages"),
'nouploadmodule' => array( 'code' => 'nomodule', 'info' => 'No upload module set' ),
'importnofile' => array('code' => 'nofile', 'info' => "You didn't upload a file"),
'importuploaderrorsize' => array('code' => 'filetoobig', 'info' => 'The file you uploaded is bigger than the maximum upload size'),
'importuploaderrorpartial' => array('code' => 'partialupload', 'info' => 'The file was only partially uploaded'),
'importuploaderrortemp' => array('code' => 'notempdir', 'info' => 'The temporary upload directory is missing'),
'importcantopen' => array('code' => 'cantopenfile', 'info' => "Couldn't open the uploaded file"),
'import-noarticle' => array('code' => 'badinterwiki', 'info' => 'Invalid interwiki title specified'),
'importbadinterwiki' => array('code' => 'badinterwiki', 'info' => 'Invalid interwiki title specified'),
'import-unknownerror' => array('code' => 'import-unknownerror', 'info' => "Unknown error on import: ``\$1''"),
'cantoverwrite-sharedfile' => array('code' => 'cantoverwrite-sharedfile', 'info' => 'The target file exists on a shared repository and you do not have permission to override it'),
'sharedfile-exists' => array('code' => 'fileexists-sharedrepo-perm', 'info' => 'The target file exists on a shared repository. Use the ignorewarnings parameter to override it.'),
// ApiEditPage messages
'noimageredirect-anon' => array('code' => 'noimageredirect-anon', 'info' => "Anonymous users can't create image redirects"),
'noimageredirect-logged' => array('code' => 'noimageredirect', 'info' => "You don't have permission to create image redirects"),
'spamdetected' => array('code' => 'spamdetected', 'info' => "Your edit was refused because it contained a spam fragment: ``\$1''"),
'filtered' => array('code' => 'filtered', 'info' => "The filter callback function refused your edit"),
'contenttoobig' => array('code' => 'contenttoobig', 'info' => "The content you supplied exceeds the article size limit of \$1 kilobytes"),
'noedit-anon' => array('code' => 'noedit-anon', 'info' => "Anonymous users can't edit pages"),
'noedit' => array('code' => 'noedit', 'info' => "You don't have permission to edit pages"),
'wasdeleted' => array('code' => 'pagedeleted', 'info' => "The page has been deleted since you fetched its timestamp"),
'blankpage' => array('code' => 'emptypage', 'info' => "Creating new, empty pages is not allowed"),
'editconflict' => array('code' => 'editconflict', 'info' => "Edit conflict detected"),
'hashcheckfailed' => array('code' => 'badmd5', 'info' => "The supplied MD5 hash was incorrect"),
'missingtext' => array('code' => 'notext', 'info' => "One of the text, appendtext, prependtext and undo parameters must be set"),
'emptynewsection' => array('code' => 'emptynewsection', 'info' => 'Creating empty new sections is not possible.'),
'revwrongpage' => array('code' => 'revwrongpage', 'info' => "r\$1 is not a revision of ``\$2''"),
'undo-failure' => array('code' => 'undofailure', 'info' => 'Undo failed due to conflicting intermediate edits'),
//uploadMsgs
'invalid-session-key' => array( 'code' => 'invalid-session-key', 'info' => 'Not a valid session key' ),
'nouploadmodule' => array( 'code' => 'nouploadmodule', 'info' => 'No upload module set' ),
);
/**
* Helper function for readonly errors
*/
public function dieReadOnly() {
$parsed = $this->parseMsg( array( 'readonlytext' ) );
$this->dieUsage($parsed['info'], $parsed['code'], /* http error */ 0,
array( 'readonlyreason' => wfReadOnlyReason() ) );
}
/**
* Output the error message related to a certain array
* @param $error array Element of a getUserPermissionsErrors()-style array
*/
public function dieUsageMsg($error) {
$parsed = $this->parseMsg($error);
$this->dieUsage($parsed['info'], $parsed['code']);
}
/**
* Return the error message related to a certain array
* @param $error array Element of a getUserPermissionsErrors()-style array
* @return array('code' => code, 'info' => info)
*/
public function parseMsg($error) {
$key = array_shift($error);
if(isset(self::$messageMap[$key]))
return array( 'code' =>
wfMsgReplaceArgs(self::$messageMap[$key]['code'], $error),
'info' =>
wfMsgReplaceArgs(self::$messageMap[$key]['info'], $error)
);
// If the key isn't present, throw an "unknown error"
return $this->parseMsg(array('unknownerror', $key));
}
/**
* Internal code errors should be reported with this method
* @param $method string Method or function name
* @param $message string Error message
*/
protected static function dieDebug($method, $message) {
wfDebugDieBacktrace("Internal error in $method: $message");
}
/**
* Indicates if this module needs maxlag to be checked
* @return bool
*/
public function shouldCheckMaxlag() {
return true;
}
/**
* Indicates whether this module requires read rights
* @return bool
*/
public function isReadMode() {
return true;
}
/**
* Indicates whether this module requires write mode
* @return bool
*/
public function isWriteMode() {
return false;
}
/**
* Indicates whether this module must be called with a POST request
* @return bool
*/
public function mustBePosted() {
return false;
}
/**
* Profiling: total module execution time
*/
private $mTimeIn = 0, $mModuleTime = 0;
/**
* Start module profiling
*/
public function profileIn() {
if ($this->mTimeIn !== 0)
ApiBase :: dieDebug(__METHOD__, 'called twice without calling profileOut()');
$this->mTimeIn = microtime(true);
wfProfileIn($this->getModuleProfileName());
}
/**
* End module profiling
*/
public function profileOut() {
if ($this->mTimeIn === 0)
ApiBase :: dieDebug(__METHOD__, 'called without calling profileIn() first');
if ($this->mDBTimeIn !== 0)
ApiBase :: dieDebug(__METHOD__, 'must be called after database profiling is done with profileDBOut()');
$this->mModuleTime += microtime(true) - $this->mTimeIn;
$this->mTimeIn = 0;
wfProfileOut($this->getModuleProfileName());
}
/**
* When modules crash, sometimes it is needed to do a profileOut() regardless
* of the profiling state the module was in. This method does such cleanup.
*/
public function safeProfileOut() {
if ($this->mTimeIn !== 0) {
if ($this->mDBTimeIn !== 0)
$this->profileDBOut();
$this->profileOut();
}
}
/**
* Total time the module was executed
* @return float
*/
public function getProfileTime() {
if ($this->mTimeIn !== 0)
ApiBase :: dieDebug(__METHOD__, 'called without calling profileOut() first');
return $this->mModuleTime;
}
/**
* Profiling: database execution time
*/
private $mDBTimeIn = 0, $mDBTime = 0;
/**
* Start module profiling
*/
public function profileDBIn() {
if ($this->mTimeIn === 0)
ApiBase :: dieDebug(__METHOD__, 'must be called while profiling the entire module with profileIn()');
if ($this->mDBTimeIn !== 0)
ApiBase :: dieDebug(__METHOD__, 'called twice without calling profileDBOut()');
$this->mDBTimeIn = microtime(true);
wfProfileIn($this->getModuleProfileName(true));
}
/**
* End database profiling
*/
public function profileDBOut() {
if ($this->mTimeIn === 0)
ApiBase :: dieDebug(__METHOD__, 'must be called while profiling the entire module with profileIn()');
if ($this->mDBTimeIn === 0)
ApiBase :: dieDebug(__METHOD__, 'called without calling profileDBIn() first');
$time = microtime(true) - $this->mDBTimeIn;
$this->mDBTimeIn = 0;
$this->mDBTime += $time;
$this->getMain()->mDBTime += $time;
wfProfileOut($this->getModuleProfileName(true));
}
/**
* Total time the module used the database
* @return float
*/
public function getProfileDBTime() {
if ($this->mDBTimeIn !== 0)
ApiBase :: dieDebug(__METHOD__, 'called without calling profileDBOut() first');
return $this->mDBTime;
}
/**
* Debugging function that prints a value and an optional backtrace
* @param $value mixed Value to print
* @param $name string Description of the printed value
* @param $backtrace bool If true, print a backtrace
*/
public static function debugPrint($value, $name = 'unknown', $backtrace = false) {
print "\n\n<pre><b>Debugging value '$name':</b>\n\n";
var_export($value);
if ($backtrace)
print "\n" . wfBacktrace();
print "\n</pre>\n";
}
/**
* Returns a string that identifies the version of this class.
* @return string
*/
public static function getBaseVersion() {
return __CLASS__ . ': $Id$';
}
}