--- Begin Message ---
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Subject: |
24.1.50; url-http-parse-headers should not disable file name handlers since it breaks auth-source |
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Date: |
Wed, 18 Jul 2012 20:38:48 +0200 |
The function `url-http-parse-headers' temporarily disables all file name
handlers to circumvent a bug where Tramp could kick in because the URL
might look like a remote file (#6717). This is the offending snippet:
;; The filename part of a URL could be in remote file syntax,
;; see Bug#6717 for an example. We disable file name
;; handlers, therefore.
(file-name-handler-alist nil))
However, this workaraound assumes that everything that gets afterwards
in the `let'-section does not depend on file name handlers. However,
this is not the case: `url-http-handle-authentication' is called which
in turn calls the auth-source package. This package however supports
encrypted authinfo files which have to be automatically decrypted
through `auto-encryption-mode'. This, of course, works through file name
handlers.
Here's a backtrace from `auth-source-search' resulting from a call to
`url-retrieve-synchronously' on a password-protected URL:
auth-source-search(:max 1 :host "www.google.com:443" :port "https")
url-do-auth-source-search("www.google.com:443" "https" :user)
url-basic-auth([cl-struct-url "https" nil nil "www.google.com" 443
"/calendar/dav/MY-GOOGLE-ACCOUNT/events/" nil nil t nil t] t nil "Google
CalDAV" (("realm" . "Google CalDAV") ("basic")))
url-get-authentication("https://www.google.com/calendar/dav/MY-GOOGLE-ACCOUNT/events/";
"Google CalDAV" "basic" t (("realm" . "Google CalDAV") ("basic")))
url-http-handle-authentication(nil)
[ ... ]
url-http-parse-headers()
url-http-chunked-encoding-after-change-function(500 507 7)
url-http-generic-filter(#<process www.google.com<1>> "\n0\n\n")
[ ... ]
url-retrieve-synchronously("https://www.google.com/calendar/dav/MY-GOOGLE-ACCOUNT/events/";)
Note that after `url-http-parse-headers' the variable
`file-name-handler-alist' is set to 'nil', thus when
`auth-source-search' loads an encrypted authinfo.gpg file, it won't
automatically get decrypted.
-David
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--- Begin Message ---
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Subject: |
Re: bug#11981: 24.1.50; url-http-parse-headers should not disable file name handlers since it breaks auth-source |
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Date: |
Tue, 14 Aug 2012 10:55:39 -0400 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.1.50 (gnu/linux) |
>> Can we now re-enable file-name-handlers in url-http-parse-headers?
> I think so. I re-enabled the file-name-handlers, created a test feed
> with a colon in it
> http://www.randomsample.de/foo:bar.xml
> and I could subscribe to it with Gnus (the original URLs in Bug #6717
> gave me http 405 errors).
OK, re-enabled, then, thank you,
Stefan
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