82187 - subscript loader can't load from a jar

Status: RESOLVED INCOMPLETE

(Core :: XPConnect, defect)

Description

[Robert Ginda]

The contentLength attribute of nsIChannel returns a failure code when the
channel represents a file:// url that is part of a jar.  This keeps users from
loading subscripts stored in a jar, which makes the loader kind-of useless.

Mitch, do you know why we can't get the content length of a file in a jar?

The code that's failing is
http://lxr.mozilla.org/mozilla/source/js/src/xpconnect/loader/mozJSSubScriptLoader.cpp#275

Comment 1

[Pete Collins (MDG)]

Rob, this might be a bug with GetContentLength because GetContentType seems to
work fine from a jar'd file.

char *type;
chan->GetContentType(&type);
printf("content type %s\n\n", type);

prints out:

content type application/x-javascript

--pete

Comment 2

[Mitchell Stoltz (not reading bugmail)]

dunno...you should be able to get the content length. Maybe recent Necko changes
messed this up. How do I reproduce this?

Comment 3

[Pete Collins (MDG)]

Attachment: loader script testcase

Comment 4

[Pete Collins (MDG)]

To reproduce, take the js code in attachment 35791 [details] and paste it into
navigator.xul in place of:

<script type="application/x-javascript"
src="chrome://navigator/content/navigator.js"/>

zip it up into a jar and run mozilla.

You should see this error when you load it up.

Note: verifyreflow is disabled
Note: styleverifytree is disabled
Note: frameverifytree is disabled
JavaScript error:
 line 0: uncaught exception: ContentLength not available (not a local URL?)


--pete
 

Comment 5

[Pete Collins (MDG)]

If i dereference nsIURI from non jar'd package i produce this output:

js url=chrome://rubbertree/content/js/globals.js
uri->GetSpec=file:///usr/src/MOZILLA/mozilla/dist/bin/chrome/rubbertree/content/js/globals.js
uri->GetPath=/usr/src/MOZILLA/mozilla/dist/bin/chrome/rubbertree/content/js/globals.js
uri->Resolve=file:///usr/src/MOZILLA/mozilla/dist/bin/chrome/rubbertree/content/js/globals.js
uri->GetPrePath=file://
chan->GetContentType=application/x-javascript

From jar'd package my output is this:

js url=chrome://rubbertree/content/js/globals.js
uri->GetSpec=jar:resource:///chrome/rubbertree.jar!/content/js/globals.js
uri->GetPath=
uri->Resolve=jar:resource:///chrome/rubbertree.jar!/content/js/
uri->GetPrePath=jar:
chan->GetContentType=application/x-javascript

globals.js is the first js file i'm loading in this test case.

--pete

Comment 6

[Asa Dotzler [:asa]]

Bugs targeted at mozilla1.0 without the mozilla1.0 keyword moved to mozilla1.0.1 
(you can query for this string to delete spam or retrieve the list of bugs I've 
moved)

Comment 8

[Irakli Gozalishvili [:irakli] [:gozala] [@gozala]]

Is there any plans regarding fixing this bug ??