Subj : Re: javascript: from xul/html .vs. xpcshell ! not the same behavior....
To   : jmp
From : Brendan Eich
Date : Wed Aug 11 2004 02:20 pm

jmp wrote:
>  Gurus,
> 
>  I wrote an XPCOM component (in c++) that at some point loads an XML
>  document using nsIDOMXMLDocument interface.
> 
>  When this XPCOM component is instanciated from a XUL dialog, it beahaves as expected...
> 
>  If I write some javascript and try to get the same thing from xpcshell, it fails
>  lamentably.
> 
>  I have tracked this down to the following call, where it fails
>  in the call to JS_GetScriptPrincipals().
> 
>  The "shouldn't happen" case DO HAPPEN !!!!


It seems to be a limitation, a bug really, of xpcshell that it doesn't 
compile scripts with principals.  Cc'ing timeless in case he's run into 
this one, and setting followup-to: m.jseng.  Please feel free to file a 
bug against XPConnect.

/be


> 
>  I have tried with build from Mozilla 1.4.2 and from mozilla 1.7.2. Same behavior!!!!
> 
>  has anyone here any ideas ????
> 
>  nsresult nsScriptSecurityManager::GetScriptPrincipal(JSContext *cx,
>                                              JSScript *script,
>                                              nsIPrincipal **result)
>  {
>      if (!script)
>      {
>          *result = nsnull;
>          return NS_OK;
>      }
>      JSPrincipals *jsp = JS_GetScriptPrincipals(cx, script);
>      if (!jsp) {
>          // Script didn't have principals -- shouldn't happen.
>          return NS_ERROR_FAILURE;
>      }
>      nsJSPrincipals *nsJSPrin = NS_STATIC_CAST(nsJSPrincipals *, jsp);
>      *result = nsJSPrin->nsIPrincipalPtr;
>      if (!*result)
>          return NS_ERROR_FAILURE;
>      NS_ADDREF(*result);
>      return NS_OK;
> 
>  }
> 
>  Thanks
> 
>  JM
> 
>

.