includes/api/ApiUsageException.php

   1 <?php
   2 /**
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation; either version 2 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  16  * http://www.gnu.org/copyleft/gpl.html
  17  *
  18  * @file
  19  * @defgroup API API
  20  */
  21
  22 /**
  23  * This exception will be thrown when dieUsage is called to stop module execution.
  24  *
  25  * @ingroup API
  26  * @deprecated since 1.29, use ApiUsageException instead
  27  */
  28 class UsageException extends MWException {
  29
  30         private $mCodestr;
  31
  32         /**
  33          * @var null|array
  34          */
  35         private $mExtraData;
  36
  37         /**
  38          * @param string $message
  39          * @param string $codestr
  40          * @param int $code
  41          * @param array|null $extradata
  42          */
  43         public function __construct( $message, $codestr, $code = 0, $extradata = null ) {
  44                 parent::__construct( $message, $code );
  45                 $this->mCodestr = $codestr;
  46                 $this->mExtraData = $extradata;
  47
  48                 if ( !$this instanceof ApiUsageException ) {
  49                         wfDeprecated( __METHOD__, '1.29' );
  50                 }
  51
  52                 // This should never happen, so throw an exception about it that will
  53                 // hopefully get logged with a backtrace (T138585)
  54                 if ( !is_string( $codestr ) || $codestr === '' ) {
  55                         throw new InvalidArgumentException( 'Invalid $codestr, was ' .
  56                                 ( $codestr === '' ? 'empty string' : gettype( $codestr ) )
  57                         );
  58                 }
  59         }
  60
  61         /**
  62          * @return string
  63          */
  64         public function getCodeString() {
  65                 wfDeprecated( __METHOD__, '1.29' );
  66                 return $this->mCodestr;
  67         }
  68
  69         /**
  70          * @return array
  71          */
  72         public function getMessageArray() {
  73                 wfDeprecated( __METHOD__, '1.29' );
  74                 $result = [
  75                         'code' => $this->mCodestr,
  76                         'info' => $this->getMessage()
  77                 ];
  78                 if ( is_array( $this->mExtraData ) ) {
  79                         $result = array_merge( $result, $this->mExtraData );
  80                 }
  81
  82                 return $result;
  83         }
  84
  85         /**
  86          * @return string
  87          */
  88         public function __toString() {
  89                 return "{$this->getCodeString()}: {$this->getMessage()}";
  90         }
  91 }
  92
  93 /**
  94  * Exception used to abort API execution with an error
  95  *
  96  * If possible, use ApiBase::dieWithError() instead of throwing this directly.
  97  *
  98  * @ingroup API
  99  * @note This currently extends UsageException for backwards compatibility, so
 100  *  all the existing code that catches UsageException won't break when stuff
 101  *  starts throwing ApiUsageException. Eventually UsageException will go away
 102  *  and this will (probably) extend MWException directly.
 103  */
 104 class ApiUsageException extends UsageException implements ILocalizedException {
 105
 106         protected $modulePath;
 107         protected $status;
 108
 109         /**
 110          * @param ApiBase|null $module API module responsible for the error, if known
 111          * @param StatusValue $status Status holding errors
 112          * @param int $httpCode HTTP error code to use
 113          */
 114         public function __construct(
 115                 ApiBase $module = null, StatusValue $status, $httpCode = 0
 116         ) {
 117                 if ( $status->isOK() ) {
 118                         throw new InvalidArgumentException( __METHOD__ . ' requires a fatal Status' );
 119                 }
 120
 121                 $this->modulePath = $module ? $module->getModulePath() : null;
 122                 $this->status = $status;
 123
 124                 // Bug T46111: Messages in the log files should be in English and not
 125                 // customized by the local wiki.
 126                 $enMsg = clone $this->getApiMessage();
 127                 $enMsg->inLanguage( 'en' )->useDatabase( false );
 128                 parent::__construct(
 129                         ApiErrorFormatter::stripMarkup( $enMsg->text() ),
 130                         $enMsg->getApiCode(),
 131                         $httpCode,
 132                         $enMsg->getApiData()
 133                 );
 134         }
 135
 136         /**
 137          * @param ApiBase|null $module API module responsible for the error, if known
 138          * @param string|array|Message $msg See ApiMessage::create()
 139          * @param string|null $code See ApiMessage::create()
 140          * @param array|null $data See ApiMessage::create()
 141          * @param int $httpCode HTTP error code to use
 142          * @return static
 143          */
 144         public static function newWithMessage(
 145                 ApiBase $module = null, $msg, $code = null, $data = null, $httpCode = 0
 146         ) {
 147                 return new static(
 148                         $module,
 149                         StatusValue::newFatal( ApiMessage::create( $msg, $code, $data ) ),
 150                         $httpCode
 151                 );
 152         }
 153
 154         /**
 155          * @returns ApiMessage
 156          */
 157         private function getApiMessage() {
 158                 $errors = $this->status->getErrorsByType( 'error' );
 159                 if ( !$errors ) {
 160                         $errors = $this->status->getErrors();
 161                 }
 162                 if ( !$errors ) {
 163                         $msg = new ApiMessage( 'apierror-unknownerror-nocode', 'unknownerror' );
 164                 } else {
 165                         $msg = ApiMessage::create( $errors[0] );
 166                 }
 167                 return $msg;
 168         }
 169
 170         /**
 171          * Fetch the responsible module name
 172          * @return string|null
 173          */
 174         public function getModulePath() {
 175                 return $this->modulePath;
 176         }
 177
 178         /**
 179          * Fetch the error status
 180          * @return StatusValue
 181          */
 182         public function getStatusValue() {
 183                 return $this->status;
 184         }
 185
 186         /**
 187          * @deprecated Do not use. This only exists here because UsageException is in
 188          *  the inheritance chain for backwards compatibility.
 189          * @inheritDoc
 190          */
 191         public function getCodeString() {
 192                 wfDeprecated( __METHOD__, '1.29' );
 193                 return $this->getApiMessage()->getApiCode();
 194         }
 195
 196         /**
 197          * @deprecated Do not use. This only exists here because UsageException is in
 198          *  the inheritance chain for backwards compatibility.
 199          * @inheritDoc
 200          */
 201         public function getMessageArray() {
 202                 wfDeprecated( __METHOD__, '1.29' );
 203                 $enMsg = clone $this->getApiMessage();
 204                 $enMsg->inLanguage( 'en' )->useDatabase( false );
 205
 206                 return [
 207                         'code' => $enMsg->getApiCode(),
 208                         'info' => ApiErrorFormatter::stripMarkup( $enMsg->text() ),
 209                 ] + $enMsg->getApiData();
 210         }
 211
 212         /**
 213          * @inheritDoc
 214          */
 215         public function getMessageObject() {
 216                 return $this->status->getMessage();
 217         }
 218
 219         /**
 220          * @return string
 221          */
 222         public function __toString() {
 223                 $enMsg = clone $this->getApiMessage();
 224                 $enMsg->inLanguage( 'en' )->useDatabase( false );
 225                 $text = ApiErrorFormatter::stripMarkup( $enMsg->text() );
 226
 227                 return get_class( $this ) . ": {$enMsg->getApiCode()}: {$text} "
 228                         . "in {$this->getFile()}:{$this->getLine()}\n"
 229                         . "Stack trace:\n{$this->getTraceAsString()}";
 230         }
 231
 232 }