User:Quarl/rollback.js

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Documentation for this user script can be added at User:Quarl/rollback.
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// Rollback button.

// requires wikipage.js, md5.js

// based on http://sam.zoy.org/wikipedia/godmode-light.js

// <pre><nowiki>

// -----------------------------------------------------------------------------
// God-like Monobook skin
// (c) 2005 Sam Hocevar <sam@zoy.org>
// $Id: godmode-light.js 980 2005-11-12 01:51:51Z sam $
// -----------------------------------------------------------------------------

// -----------------------------------------------------------------------------
// Language support, taken from phase3/languages/*
// -----------------------------------------------------------------------------
var rollbacklink = 'rollback';
var cantrollback = 'Cannot revert edit; last contributor is only author of this page.';
var alreadyrolled = 'Cannot rollback last edit of [[$1]] by [[User:$2|$2]] ([[User talk:$2|Talk]]); someone else has edited or rolled back the page already. Last edit was by [[User:$3|$3]] ([[User talk:$3|Talk]]). ';
var revertpage = 'Reverted edits by [[Special:Contributions/$2|$2]] to last version by $1';
switch (document.getElementsByTagName('html')[0].lang) {
  case 'fr':
    rollbacklink = 'rÃ©voquer';
    cantrollback = 'Impossible de rÃ©voquer: dernier auteur est le seul Ã  avoir modifiÃ© cet article';
    alreadyrolled = 'Impossible de rÃ©voquer la derniÃ¨re modification de [[$1]] par  [[User:$2|$2]] ([[User talk:$2|Talk]]); quelqu\'un d\'autre Ã  dÃ©jÃ  modifer ou rÃ©voquer l\'article. La derniÃ¨re modificaion Ã©tait de [[User:$3|$3]] ([[User talk:$3|Talk]]). '; // lol @ pathetic grammar
    revertpage = "RÃ©vocation des modifications de [[Special:Contributions/$2|$2]] et restauration d'une prÃ©cÃ©dente version de $1";
    break;
  case 'de':
    rollbacklink = 'ZurÃ¼cksetzen';
    cantrollback = 'Die Ã„nderung kann nicht zurÃ¼ckgenommen werden; der letzte Autor ist der einzige.';
    alreadyrolled = 'Die ZurÃ¼cknahme des Artikels [[$1]] von [[Benutzer:$2|$2]] ([[Benutzer Diskussion:$2|Diskussion]]) ist nicht mÃ¶glich, da eine andere Ã„nderung oder RÃ¼cknahme erfolgt ist.  Die letzte Ã„nderung ist von [[Benutzer:$3|$3]] ([[Benutzer Diskussion:$3|Diskussion]])';
    revertpage = 'Ã„nderungen von [[Benutzer:$2]] rÃ¼ckgÃ¤ngig gemacht und letzte Version von [[Benutzer:$1]] wiederhergestellt';
    break;
  case 'es':
    rollbacklink = 'Revertir';
    cantrollback = 'No se pueden revertir las ediciones; el Ãºltimo colaborador es el Ãºnico autor de este artÃculo.';
    alreadyrolled = 'No se puede revertir la Ãºltima ediciÃ³n de [[$1]] por [[Colaborador:$2|$2]] ([[Colaborador DiscusiÃ³n:$2|DiscusiÃ³n]]); alguien mÃ¡s ya ha editado o revertido esa pÃ¡gina.  La Ãºltima ediciÃ³n fue hecha por [[Colaborador:$3|$3]] ([[Colaborador DiscusiÃ³n:$3|DiscusiÃ³n]]). ';
    revertpage = 'Revertida a la Ãºltima ediciÃ³n de $1';
    break;
  case 'it':
    rollbacklink = 'rollback';
    cantrollback = 'Impossibile tornare ad una versione precedente: l\'ultima modifica Ã¨ stata apportata dall\'unico utente che abbia lavorato a questo articolo.';
    //alreadyrolled = '';
    revertpage = 'Riportata alla revisione precedente da $1';
    break;
  case 'pt':
    rollbacklink = 'voltar';
    cantrollback = 'NÃ£o foi possÃvel reverter a ediÃ§Ã£o; o Ãºltimo contribuidor Ã© o Ãºnico autor deste artigo.';
    alreadyrolled = 'NÃ£o foi possÃvel reverter as ediÃ§Ãµes de  [[$1]] por [[User:$2|$2]] ([[User talk:$2|Talk]]); alguÃ©m o editou ou jÃ¡ o reverteu.  A Ãºltima ediÃ§Ã£o foi de  [[User:$3|$3]] ([[User talk:$3|Conversar com ele]]). ';
    revertpage = 'Revertidas ediÃ§Ãµes por [[Special:Contributions/$2|$2]], para a Ãºltima versÃ£o por $1';
    break;
}

// -----------------------------------------------------------------------------
// XMLHttpRequest support
// -----------------------------------------------------------------------------
if (document.implementation.createDocument) {
  var xmlparser = new DOMParser();
}

function XMLParse(string) {
  if (document.implementation.createDocument) {
    return xmlparser.parseFromString(string, "text/xml");
  } else if (window.ActiveXObject) {
    var xmldoc = new ActiveXObject("Microsoft.XMLDOM");
    xmldoc.async = "false";
    ret = xmldoc.loadXML(string);      
    if (!ret)
      return null;
    return xmldoc.documentElement;
  }
  return null;
}

var xmlhttp;

// -----------------------------------------------------------------------------
// Our nice Revert functions
// -----------------------------------------------------------------------------
var gml_vandal, gml_editor, gml_url;

function PerformRevert() {
  if (queryVars['fakeaction'] != 'rollback') return;

  var token = queryVars['token'];
  gml_url += '?' + escape(queryVars['title']);
  gml_vandal = queryVars['vandal'];

  document.getElementById('bodyContent').innerHTML = 'Please wait, reverting edits by ' + gml_vandal + '...';
  // Avoid XSS kiddies by using a special token
  if (token == '' || token != hex_md5(gml_url + gml_vandal + document.cookie)) {
    document.getElementById('bodyContent').innerHTML += '<br />Bad authentication token!';
    return;
  }

  xmlhttp = HTTPClient();
  if (!xmlhttp)
    return;
  document.getElementById('bodyContent').innerHTML += '<br />Getting article history...';
  xmlhttp.open("GET", gml_url + '&action=history&limit=50', true);
  xmlhttp.onreadystatechange = RevertStepTwo;
  xmlhttp.send(null);
}

function RevertStepTwo() {
  if (xmlhttp.readyState != 4)
    return
  var l;
  var oldid;
  // Get the vandal and new editor names
  gml_vandal = gml_vandal.replace(/_/g, ' ');
  gml_editor = '';
  doc = XMLParse(xmlhttp.responseText);
  l = doc.getElementById('pagehistory').getElementsByTagName('li');
  //l = doc.selectSingleNode('//*[@id="pagehistory"]').getElementsByTagName('li');
  for (i = 0; i < l.length; i++) {
    var name = l[i].getElementsByTagName('span')[0].getElementsByTagName('a')[0].innerHTML.replace(/_/g, ' ');
    if (i == 0 && name != gml_vandal) {
      document.getElementById('bodyContent').innerHTML += '<br />Error: Last editor is ' + name + ', not ' + gml_vandal + '!';
      return;
    } else if (i > 0 && name != gml_vandal) {
      oldid = l[i].getElementsByTagName('input')[0].value;
      gml_editor = name;
      break;
    }
  }
  if (gml_editor == '') {
    document.getElementById('bodyContent').innerHTML += '<br />Error: ' + gml_vandal + ' is the only editor!';
    return;
  }

  xmlhttp = HTTPClient();
  if (!xmlhttp)
    return;
  document.getElementById('bodyContent').innerHTML += '<br />Getting article edit form (GET' + gml_url + '&action=edit&oldid=' + oldid + ')...';
  xmlhttp.open('GET', gml_url + '&action=edit&oldid=' + oldid, true);
  xmlhttp.onreadystatechange = RevertStepThree;
  xmlhttp.send(null);
}

function RevertStepThree() {
  if (xmlhttp.readyState != 4)
    return
  var form, newform, l;
  // Insert the downloaded form in our current page, using
  // only hidden form inputs.
  doc = XMLParse(xmlhttp.responseText);
  form = doc.getElementById('editform');
  newform = document.createElement('form');
  l = form.getElementsByTagName('textarea');
  for (i = l.length; i--; ) {
    var t = document.createElement('input');
    t.type = 'hidden';
    t.name = l[i].name;
    t.value = l[i].value;
    newform.appendChild(t);
  }
  l = form.getElementsByTagName('input');
  for (i = l.length; i--; ) {
    if (l[i].name == 'wpSummary') {
      l[i].value = revertpage.replace(/\$1/g, gml_editor).replace(/\$2/g, gml_vandal);
    } else if (l[i].name == 'wpMinoredit') {
      l[i].value = '1';
    } else if (l[i].name == 'wpWatchthis') {
      if (!l[i].checked)
        continue; // Don't touch the "watch" status
      l[i].value = "on";
    } else if (l[i].name == 'wpPreview') {
      continue;
    } else if (l[i].name == 'wpDiff') {
      continue;
    }
    l[i].type = 'hidden';
    newform.appendChild(l[i]);
  }
  newform.name = form.name;
  newform.method = form.method;
  newform.id = form.id;
  newform.action = form.action;
  document.getElementById('bodyContent').innerHTML += '<br />Submitting form...';
  document.getElementById('bodyContent').appendChild(newform);
  // Submit the form
  newform.submit();
}

function rollback_link_to_username(link) {
    return link && (new WikiPage(link)).article;
}

// -----------------------------------------------------------------------------
// Add revert buttons to the page
// -----------------------------------------------------------------------------
function AddRevertButtonsDiff() {
    var article = wikiPage.page;

    var difftag = getElementsByClass('diff-ntitle',document.getElementById('bodyContent'),'td')[0];
    if (!difftag) return;

    var toplink = difftag.getElementsByTagName('a')[0].href;
    if (toplink.match(/oldid=/)) {
        // if toplink has an oldid then we're not diffing against current revision.
        return;
    }

    var vandal = rollback_link_to_username(difftag.getElementsByTagName('a')[1]);
    if (!vandal) { alert("Couldn't parse username in diff page!"); return; }

    var token = hex_md5(article + vandal + document.cookie);
    var url = wikiPage.qurl + '&fakeaction=rollback&vandal=' + escape(vandal) + '&token=' + token;
    var newtext = ' &nbsp;&nbsp;&nbsp;<strong>[<a href="' + url + '">' + rollbacklink + '</a>]</strong> ';

    difftag.innerHTML = difftag.innerHTML.replace(/(<\/a>\))(<br)/i, '$1'+newtext+'$2');
}

function AddRevertButtonsContributions() {
  var l, article = wikiPage.page, vandal;

  // Add 'revert' links to a contributions page
  if (wikiPage.article == 'Special:Contributions') {
    var wp = new WikiPage(document.getElementById('contentSub').getElementsByTagName('a')[0]);
    vandal = wp.article;
    if (!vandal) { alert("Couldn't parse user for Special:Contributions page"); return; }

    l = document.getElementById('bodyContent').getElementsByTagName('li');
    for (i = 0; i < l.length; i++) {
      var t = l[i].innerHTML
      // If we are already a sysop on this wiki, abort
      if (t.indexOf('>' + rollbacklink + '</a>]') != -1)
          break;
      //if (t.indexOf('&amp;diff=0') != -1) {
      if (t.indexOf('<strong> (') != -1) {
        article = l[i].getElementsByTagName('a')[0].href.split('&')[0].replace(/[^\/]*\/\/[^\/]*/, '');
        l[i].innerHTML += ' [<a href="' + article + '&fakeaction=rollback&vandal=' + vandal + '&token=' + hex_md5(article + vandal + document.cookie) + '">' + rollbacklink + '</a>]';
      }
    }
  }
}

function rollback_Load() {
    PerformRevert();
    AddRevertButtonsDiff();
    AddRevertButtonsContributions();
}

addOnloadHook(rollback_Load);

// </nowiki></pre>