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Bug #7086 Trans-sid modifies JavaScript
Submitted: 2000-10-08 10:36 UTC Modified: 2000-10-16 14:20 UTC
From: tobias at pressline dot de Assigned:
Status: Closed Package: Session related
PHP Version: 4.0 Latest CVS (08/10/2000) OS: linux-2.2.17
Private report: No CVE-ID: None
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From: tobias at pressline dot de
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 [2000-10-08 10:36 UTC] tobias at pressline dot de 
the following javascript gets modified:
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v3.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

modified version: (there are a couple of " added to the script)

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x="a[i])&&x.oSrc;i++)" x.src="x.oSrc;"
}

function MM_preloadImages() { //v3.0
  var d="document;" if(d.images){ if(!d.MM_p) d.MM_p="new"  Array();
    var i,j="d.MM_p.length,a=MM_preloadImages.arguments;" for(i="0;" i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src="a[i];}}"
}

function MM_findObj(n, d) { //v3.0
  var p,i,x;  if(!d) d="document;" if((p="n.indexOf(""?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

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 [2000-10-16 14:20 UTC] sas@php.net 
Trans-sid modifies HTML, so if your JavaScript contains HTML, we recommened to escape it:

var foo = "<a href='url'>";

becomes

var foo = "<a "+"href='url'>";
 
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