includes/specials/SpecialEmailuser.php

   1 <?php
   2 /**
   3  * Implements Special:Emailuser
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 /**
  25  * A special page that allows users to send e-mails to other users
  26  *
  27  * @ingroup SpecialPage
  28  */
  29 class SpecialEmailUser extends UnlistedSpecialPage {
  30         protected $mTarget;
  31
  32         public function __construct() {
  33                 parent::__construct( 'Emailuser' );
  34         }
  35
  36         protected function getFormFields() {
  37                 return array(
  38                         'From' => array(
  39                                 'type' => 'info',
  40                                 'raw' => 1,
  41                                 'default' => Linker::link(
  42                                         $this->getUser()->getUserPage(),
  43                                         htmlspecialchars( $this->getUser()->getName() )
  44                                 ),
  45                                 'label-message' => 'emailfrom',
  46                                 'id' => 'mw-emailuser-sender',
  47                         ),
  48                         'To' => array(
  49                                 'type' => 'info',
  50                                 'raw' => 1,
  51                                 'default' => Linker::link(
  52                                         $this->mTargetObj->getUserPage(),
  53                                         htmlspecialchars( $this->mTargetObj->getName() )
  54                                 ),
  55                                 'label-message' => 'emailto',
  56                                 'id' => 'mw-emailuser-recipient',
  57                         ),
  58                         'Target' => array(
  59                                 'type' => 'hidden',
  60                                 'default' => $this->mTargetObj->getName(),
  61                         ),
  62                         'Subject' => array(
  63                                 'type' => 'text',
  64                                 'default' => wfMsgExt( 'defemailsubject', array( 'content', 'parsemag' ), $this->getUser()->getName() ),
  65                                 'label-message' => 'emailsubject',
  66                                 'maxlength' => 200,
  67                                 'size' => 60,
  68                                 'required' => 1,
  69                         ),
  70                         'Text' => array(
  71                                 'type' => 'textarea',
  72                                 'rows' => 20,
  73                                 'cols' => 80,
  74                                 'label-message' => 'emailmessage',
  75                                 'required' => 1,
  76                         ),
  77                         'CCMe' => array(
  78                                 'type' => 'check',
  79                                 'label-message' => 'emailccme',
  80                                 'default' => $this->getUser()->getBoolOption( 'ccmeonemails' ),
  81                         ),
  82                 );
  83         }
  84
  85         public function execute( $par ) {
  86                 $this->setHeaders();
  87                 $this->outputHeader();
  88                 $out = $this->getOutput();
  89                 $out->addModuleStyles( 'mediawiki.special' );
  90                 $this->mTarget = is_null( $par )
  91                         ? $this->getRequest()->getVal( 'wpTarget', $this->getRequest()->getVal( 'target', '' ) )
  92                         : $par;
  93                 // error out if sending user cannot do this
  94                 $error = self::getPermissionsError( $this->getUser(), $this->getRequest()->getVal( 'wpEditToken' ) );
  95                 switch ( $error ) {
  96                         case null:
  97                                 # Wahey!
  98                                 break;
  99                         case 'badaccess':
 100                                 throw new PermissionsError( 'sendemail' );
 101                         case 'blockedemailuser':
 102                                 throw new UserBlockedError( $this->getUser()->mBlock );
 103                         case 'actionthrottledtext':
 104                                 throw new ThrottledError;
 105                         case 'mailnologin':
 106                         case 'usermaildisabled':
 107                                 throw new  ErrorPageError( $error, "{$error}text" );
 108                         default:
 109                                 # It's a hook error
 110                                 list( $title, $msg, $params ) = $error;
 111                                 throw new  ErrorPageError( $title, $msg, $params );
 112                 }
 113                 // Got a valid target user name? Else ask for one.
 114                 $ret = self::getTarget( $this->mTarget );
 115                 if( !$ret instanceof User ) {
 116                         if( $this->mTarget != '' ) {
 117                                 $ret = ( $ret == 'notarget' ) ? 'emailnotarget' : ( $ret . 'text' );
 118                                 $out->wrapWikiMsg( "<p class='error'>$1</p>", $ret );
 119                         }
 120                         $out->addHTML( $this->userForm( $this->mTarget ) );
 121                         return false;
 122                 }
 123
 124                 $this->mTargetObj = $ret;
 125
 126                 $form = new HTMLForm( $this->getFormFields(), $this->getContext() );
 127                 $form->addPreText( wfMsgExt( 'emailpagetext', 'parseinline' ) );
 128                 $form->setSubmitText( wfMsg( 'emailsend' ) );
 129                 $form->setTitle( $this->getTitle() );
 130                 $form->setSubmitCallback( array( __CLASS__, 'submit' ) );
 131                 $form->setWrapperLegend( wfMsgExt( 'email-legend', 'parsemag' ) );
 132                 $form->loadData();
 133
 134                 if( !wfRunHooks( 'EmailUserForm', array( &$form ) ) ) {
 135                         return false;
 136                 }
 137
 138                 $out->setPageTitle( $this->msg( 'emailpage' ) );
 139                 $result = $form->show();
 140
 141                 if( $result === true || ( $result instanceof Status && $result->isGood() ) ) {
 142                         $out->setPageTitle( $this->msg( 'emailsent' ) );
 143                         $out->addWikiMsg( 'emailsenttext' );
 144                         $out->returnToMain( false, $this->mTargetObj->getUserPage() );
 145                 }
 146         }
 147
 148         /**
 149          * Validate target User
 150          *
 151          * @param $target String: target user name
 152          * @return User object on success or a string on error
 153          */
 154         public static function getTarget( $target ) {
 155                 if ( $target == '' ) {
 156                         wfDebug( "Target is empty.\n" );
 157                         return 'notarget';
 158                 }
 159
 160                 $nu = User::newFromName( $target );
 161                 if( !$nu instanceof User || !$nu->getId() ) {
 162                         wfDebug( "Target is invalid user.\n" );
 163                         return 'notarget';
 164                 } elseif ( !$nu->isEmailConfirmed() ) {
 165                         wfDebug( "User has no valid email.\n" );
 166                         return 'noemail';
 167                 } elseif ( !$nu->canReceiveEmail() ) {
 168                         wfDebug( "User does not allow user emails.\n" );
 169                         return 'nowikiemail';
 170                 }
 171
 172                 return $nu;
 173         }
 174
 175         /**
 176          * Check whether a user is allowed to send email
 177          *
 178          * @param $user User object
 179          * @param $editToken String: edit token
 180          * @return null on success or string on error
 181          */
 182         public static function getPermissionsError( $user, $editToken ) {
 183                 global $wgEnableEmail, $wgEnableUserEmail;
 184                 if( !$wgEnableEmail || !$wgEnableUserEmail ) {
 185                         return 'usermaildisabled';
 186                 }
 187
 188                 if( !$user->isAllowed( 'sendemail' ) ) {
 189                         return 'badaccess';
 190                 }
 191
 192                 if( !$user->isEmailConfirmed() ) {
 193                         return 'mailnologin';
 194                 }
 195
 196                 if( $user->isBlockedFromEmailuser() ) {
 197                         wfDebug( "User is blocked from sending e-mail.\n" );
 198                         return "blockedemailuser";
 199                 }
 200
 201                 if( $user->pingLimiter( 'emailuser' ) ) {
 202                         wfDebug( "Ping limiter triggered.\n" );
 203                         return 'actionthrottledtext';
 204                 }
 205
 206                 $hookErr = false;
 207                 wfRunHooks( 'UserCanSendEmail', array( &$user, &$hookErr ) );
 208                 wfRunHooks( 'EmailUserPermissionsErrors', array( $user, $editToken, &$hookErr ) );
 209                 if ( $hookErr ) {
 210                         return $hookErr;
 211                 }
 212
 213                 return null;
 214         }
 215
 216         /**
 217          * Form to ask for target user name.
 218          *
 219          * @param $name String: user name submitted.
 220          * @return String: form asking for user name.
 221          */
 222         protected function userForm( $name ) {
 223                 global $wgScript;
 224                 $string = Xml::openElement( 'form', array( 'method' => 'get', 'action' => $wgScript, 'id' => 'askusername' ) ) .
 225                         Html::hidden( 'title', $this->getTitle()->getPrefixedText() ) .
 226                         Xml::openElement( 'fieldset' ) .
 227                         Html::rawElement( 'legend', null, wfMessage( 'emailtarget' )->parse() ) .
 228                         Xml::inputLabel( wfMessage( 'emailusername' )->text(), 'target', 'emailusertarget', 30, $name ) . ' ' .
 229                         Xml::submitButton( wfMessage( 'emailusernamesubmit' )->text() ) .
 230                         Xml::closeElement( 'fieldset' ) .
 231                         Xml::closeElement( 'form' ) . "\n";
 232                 return $string;
 233         }
 234
 235         /**
 236          * Really send a mail. Permissions should have been checked using
 237          * getPermissionsError(). It is probably also a good
 238          * idea to check the edit token and ping limiter in advance.
 239          *
 240          * @return Mixed: Status object, or potentially a String on error
 241          * or maybe even true on success if anything uses the EmailUser hook.
 242          */
 243         public static function submit( $data ) {
 244                 global $wgUser, $wgUserEmailUseReplyTo;
 245
 246                 $target = self::getTarget( $data['Target'] );
 247                 if( !$target instanceof User ) {
 248                         return wfMsgExt( $target . 'text', 'parse' );
 249                 }
 250                 $to = new MailAddress( $target );
 251                 $from = new MailAddress( $wgUser );
 252                 $subject = $data['Subject'];
 253                 $text = $data['Text'];
 254
 255                 // Add a standard footer and trim up trailing newlines
 256                 $text = rtrim( $text ) . "\n\n-- \n";
 257                 $text .= wfMsgExt(
 258                         'emailuserfooter',
 259                         array( 'content', 'parsemag' ),
 260                         array( $from->name, $to->name )
 261                 );
 262
 263                 $error = '';
 264                 if( !wfRunHooks( 'EmailUser', array( &$to, &$from, &$subject, &$text, &$error ) ) ) {
 265                         return $error;
 266                 }
 267
 268                 if( $wgUserEmailUseReplyTo ) {
 269                         // Put the generic wiki autogenerated address in the From:
 270                         // header and reserve the user for Reply-To.
 271                         //
 272                         // This is a bit ugly, but will serve to differentiate
 273                         // wiki-borne mails from direct mails and protects against
 274                         // SPF and bounce problems with some mailers (see below).
 275                         global $wgPasswordSender, $wgPasswordSenderName;
 276                         $mailFrom = new MailAddress( $wgPasswordSender, $wgPasswordSenderName );
 277                         $replyTo = $from;
 278                 } else {
 279                         // Put the sending user's e-mail address in the From: header.
 280                         //
 281                         // This is clean-looking and convenient, but has issues.
 282                         // One is that it doesn't as clearly differentiate the wiki mail
 283                         // from "directly" sent mails.
 284                         //
 285                         // Another is that some mailers (like sSMTP) will use the From
 286                         // address as the envelope sender as well. For open sites this
 287                         // can cause mails to be flunked for SPF violations (since the
 288                         // wiki server isn't an authorized sender for various users'
 289                         // domains) as well as creating a privacy issue as bounces
 290                         // containing the recipient's e-mail address may get sent to
 291                         // the sending user.
 292                         $mailFrom = $from;
 293                         $replyTo = null;
 294                 }
 295
 296                 $status = UserMailer::send( $to, $mailFrom, $subject, $text, $replyTo );
 297
 298                 if( !$status->isGood() ) {
 299                         return $status;
 300                 } else {
 301                         // if the user requested a copy of this mail, do this now,
 302                         // unless they are emailing themselves, in which case one
 303                         // copy of the message is sufficient.
 304                         if ( $data['CCMe'] && $to != $from ) {
 305                                 $cc_subject = wfMsg(
 306                                         'emailccsubject',
 307                                         $target->getName(),
 308                                         $subject
 309                                 );
 310                                 wfRunHooks( 'EmailUserCC', array( &$from, &$from, &$cc_subject, &$text ) );
 311                                 $ccStatus = UserMailer::send( $from, $from, $cc_subject, $text );
 312                                 $status->merge( $ccStatus );
 313                         }
 314
 315                         wfRunHooks( 'EmailUserComplete', array( $to, $from, $subject, $text ) );
 316                         return $status;
 317                 }
 318         }
 319 }