297167 - can't load xml file after saving by using channels

Status: UNCONFIRMED

(Core :: XML, defect)

Description

[alexander :surkov (:asurkov)]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; ru-RU; rv:1.7.8) Gecko/20050511 Firefox/1.0.4 (ax)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; ru-RU; rv:1.7.8) Gecko/20050511 Firefox/1.0.4 (ax)

I save and then load local xml file by using channels. 

var ioservice=Components.classes["@mozilla.org/network/io-service;1"].
            getService(Components.interfaces.nsIIOService);
var channel=ioservice.newChannel(url, null, null);

var uploadChannel = channel.QueryInterface(Components.interfaces.nsIUploadChannel);
var stream=Components.classes['@mozilla.org/io/string-input-stream;1'].
          createInstance(Components.interfaces.nsIStringInputStream);
 
stream.setData(data, data.length);
uploadChannel.setUploadStream(stream, "text/xml", -1);

var listener={
  onStartRequest: function(){
  },
  onStopRequest: function(){
  },
  onDataAvailable: function(){
  }
};

channel.asyncOpen(listener, null);

I try to load xml file when onStopRequest is called. Can I load just saved file
when onStopRequest is called or I need one more event? When I load xml file on
onStopRequest event then I get parser error: "no element found".

Reproducible: Always

Comment 1

[Peter Van der Beken [:peterv]]

Bugzilla isn't a forum for these type of questions, please use the newsgroups
(http://www.mozilla.org/community/developer-forums.html). Thanks.

Comment 2

[alexander :surkov (:asurkov)]

I'm sorry that I form my bug as a question. Issue of the bug is I can't load
local xml file directly after saving.

Just I don't know exactly what is wrong: either onStopRequest is called too
quiqly or I need new event (when onStopRequest is not intended for such things).

Comment 3

[Christian :Biesinger (don't email me, ping me on IRC)]

onStopRequest is called when the upload (and actually the download too, if any)
is finished. how are you loading the xml file?

Comment 4

[alexander :surkov (:asurkov)]

I load file by the following way:

var ioservice=Components.classes["@mozilla.org/network/io-service;1"].
            getService(Components.interfaces.nsIIOService);
var channel=ioservice.newChannel(url, null, null);

var istream=channel.open();

var domparser=new DOMParser();
domparser.parseFromStream(istream, "utf-8", istream.available(), "text/xml");

I try to load file after onStopRequest calling.

Comment 5

[Christian :Biesinger (don't email me, ping me on IRC)]

same as bug 287409?

Comment 6

[alexander :surkov (:asurkov)]

No. If I save xml file and then load it after timeout (setTimeout() method) then
xml file is loaded successfully.

Comment 7

[Christian :Biesinger (don't email me, ping me on IRC)]

this needs a full testcase.

Comment 8

[alexander :surkov (:asurkov)]

Attachment: run it

save on root of local disc 'c:'

Comment 9

[alexander :surkov (:asurkov)]

Attachment: js

save it on root of local disc 'c:'

Comment 10

[alexander :surkov (:asurkov)]

Attachment: test xml

save it on root of local disc 'c:'

Comment 11

[alexander :surkov (:asurkov)]

If you will run test case then you will see exception "Error: [Exception...
"Access to restricted URI denied"  code: "1012" nsresult: "0x805303f4
(NS_ERROR_DOM_BAD_URI)" after trying to serialize loaded xml document.

If you uncomment lines 24 and 28 to load document after timeout, you don't get
this exception.

Comment 12

[alexander :surkov (:asurkov)]

(In addition to comment #11)

documentElement.tagName of loaded document is "parseerror" element.

Comment 13

[Peter Van der Beken [:peterv]]

Put
|netscape.security.PrivilegeManager.enablePrivilege("UniversalBrowserRead");|	
before the call to onSaved. The onStopRequest callback makes us use the safe
context, so you can't access doc which comes from file://. Not sure what we can
do about that.

Comment 14

[alexander :surkov (:asurkov)]

Yes, when I add
netscape.security.PrivilegeManager.enablePrivilege("UniversalBrowserRead")
before onSave() then exception is disappeared. But as before sometimes loaded
doc is valid, sometimes is not (parseerror).

Comment 15

[Gervase Markham [:gerv]]

This is an automated message, with ID "auto-resolve01".

This bug has had no comments for a long time. Statistically, we have found that
bug reports that have not been confirmed by a second user after three months are
highly unlikely to be the source of a fix to the code.

While your input is very important to us, our resources are limited and so we
are asking for your help in focussing our efforts. If you can still reproduce
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Comment 16

[alexander :surkov (:asurkov)]

confirm Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9a1) Gecko/20050909
SeaMonkey/1.1a