GNU bug report logs -
#16960
24.3.50; Infinite loop in url-retrieve-synchronously if method is POST and response status is 301/302
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bug#16960
; Package
emacs
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(Fri, 07 Mar 2014 15:26:02 GMT)
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Alex Kost <alezost <at> gmail.com>
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(Fri, 07 Mar 2014 15:26:02 GMT)
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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
[Message part 1 (text/plain, inline)]
The problem is the following: when I try to login to
https://aur.archlinux.org with `url-retrieve-synchronously' (see the
code below), Emacs freezes (C-g helps) because callback passed to
`url-retrieve' is never called.
AFAIU this happens because `url-http-parse-headers' returns nil if
response status is 301/302/307 and method is not "HEAD" or "GET" (see
<http://git.savannah.gnu.org/cgit/emacs.git/tree/lisp/url/url-http.el#n574>).
At least the problem goes away when I add:
(setq success t)
after
(or `moved-permanently `found `temporary-redirect)
in `url-http-parse-headers'.
Would it be OK to allow such requests?
Recipe is simple but you need to have an account on
<https://aur.archlinux.org> for that:
1. emacs -Q
2. Evaluate (setq url-debug t)
3. Evaluate the following code:
[Message part 2 (application/emacs-lisp, inline)]
[Message part 3 (text/plain, inline)]
3. Emacs hangs; press C-g
4. In "*URL-DEBUG*" buffer you can see the line:
http -> Finished parsing HTTP headers: nil
In GNU Emacs 24.3.50.2 (i686-pc-linux-gnu, GTK+ Version 3.10.6)
of 2014-02-02 on leviafan
Windowing system distributor `The X.Org Foundation', version 11.0.11500000
Configured using:
`configure --prefix=/home/alexx/usr'
Merged 16960 21017.
Request was from
Glenn Morris <rgm <at> gnu.org>
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control <at> debbugs.gnu.org
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(Thu, 09 Jul 2015 15:38:01 GMT)
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Information forwarded
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bug-gnu-emacs <at> gnu.org
:
bug#16960
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emacs
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(Fri, 25 Dec 2015 20:37:01 GMT)
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Message #10 received at 16960 <at> debbugs.gnu.org (full text, mbox):
Alex Kost <alezost <at> gmail.com> writes:
> The problem is the following: when I try to login to
> https://aur.archlinux.org with `url-retrieve-synchronously' (see the
> code below), Emacs freezes (C-g helps) because callback passed to
> `url-retrieve' is never called.
>
> AFAIU this happens because `url-http-parse-headers' returns nil if
> response status is 301/302/307 and method is not "HEAD" or "GET" (see
> <http://git.savannah.gnu.org/cgit/emacs.git/tree/lisp/url/url-http.el#n574>).
> At least the problem goes away when I add:
>
> (setq success t)
>
> after
>
> (or `moved-permanently `found `temporary-redirect)
>
> in `url-http-parse-headers'.
>
> Would it be OK to allow such requests?
>
> Recipe is simple but you need to have an account on
> <https://aur.archlinux.org> for that:
I don't have an account there, so I can't reproduce this bug. But could
you create a patch that fixes this problem?
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
This bug report was last modified 8 years and 123 days ago.
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