User:Knowledge Seeker/monobook.js

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If a message on your talk page led you here, please be wary of who left it. The code below could contain malicious content capable of compromising your account; if your account appears to be compromised, it will be blocked. If you are unsure whether the code is safe, you can ask at the appropriate village pump.
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// Returns <li><a href="url">name</a></li>
function addlilink(url, name)
{
  var na = document.createElement('a');
  na.setAttribute('href', url);
 
  var txt = document.createTextNode(name);
  na.appendChild(txt);
 
  var li = document.createElement('li');
  li.appendChild(na);
  return li;
}
 
// Adds a "blocklog" tab and fills in the username field on Special:Blockip, if a "&faketarget=username" is present.
function do_blockip_stuff()
{
  // Look for a &faketarget= for the username/ip
  var l = location.search.substring(1).split('&');
  var target = '';
  for (var i = 0; i < l.length; ++i)
    {
      var n = l[i].indexOf('=');
      if (l[i].substring(0, n) == 'faketarget')
	{
	  target = l[i].substring(n + 1);
	  break;
	}
    }
 
  if (target == '')
    return;
 
  // put account name in "IP Address/username" field
  var addr = document.getElementsByName('wpBlockAddress')[0];
  addr.value = unescape(target);
 
  // add "blocklog" tab
  var c1 = document.getElementById('column-one');
  var tabs = c1.getElementsByTagName('div')[0].getElementsByTagName('ul')[0];
  tabs.appendChild(addlilink('/w/index.php?title=Special%3ALog&type=block&user=&page=User%3A' + target, 'blocklog'));
}
 
// Adds "block" and "blocklog" tabs to User: and User talk: pages.
function add_block_tab()
{
  var c1 = document.getElementById('column-one');
  var tabs = c1.getElementsByTagName('div')[0].getElementsByTagName('ul')[0];
 
  // use the "edit this page" tab to get already-tidied url
  var editlk = document.getElementById('ca-edit').getElementsByTagName('a')[0].href;
  // cut everything up to "title=" from the start and everything past "&action=edit" from the end
  editlk = editlk.substring(editlk.indexOf('title=') + 6, editlk.lastIndexOf('&action=edit'));
  editlk = editlk.substring(editlk.indexOf(':') + 1);
  var slloc = editlk.indexOf('/');
  if (slloc > 0)
    editlk = editlk.substring(0, slloc);
 
  // add "block" tab
  tabs.appendChild(addlilink('/w/index.php?title=Special%3ABlockip&faketarget=' + editlk, 'block'));
  // add "blocklog" tab
  tabs.appendChild(addlilink('/w/index.php?title=Special%3ALog&type=block&user=&page=User%3A' + editlk, 'blocklog'));
}
 
function do_onload()
{
  if (document.title.indexOf('User:') == 0
      || document.title.indexOf('User talk:') == 0)
    add_block_tab();
  else if (document.title.indexOf('Block user') == 0) // could stand to be more robust
    do_blockip_stuff();
}
 
if (window.addEventListener) 
  window.addEventListener("load", do_onload, false);
else if (window.attachEvent) 
  window.attachEvent("onload", do_onload);