bug#43566: 27.1; url-http and excorporate does not authenticate

bug#43566: 27.1; url-http and excorporate does not authenticate

[Domingo Gómez Pérez]

I am trying to use excorporate, v. 0.7, so I am trying to locate the
problem looking at the Info page, section Troubleshooting.  

First, I run emacs -Q and then 
I execute the following code:
(setq wsdl-url "https://correo.unican.es/ews/exchange.asmx")
(with-current-buffer
    (url-retrieve-synchronously wsdl-url)
  (buffer-string))

giving the following message:

url-http-handle-authentication: Wrong authorization used for https://correo.unican.es/ews/exchange.asmx
(Note, the user and password are right, since I can download the page
using wget)

then I run the following code with M-:


     (progn
       (setq url-debug 1)
       (url-retrieve-synchronously URL-STRING)
       (dolist (p (seq-filter
                   (lambda (b) (string-match " *http*" (buffer-name b)))
                   (buffer-list)))
         (message "HTTP result buffer: \"%s\"\n%s"
                  (buffer-name p)
                  (with-current-buffer p (buffer-string))))
       "check *Messages*")

I get the following error:

http -> Contacting host: correo.unican.es:443
http -> Marking connection as busy: correo.unican.es:443 #<process correo.unican.es>
http -> getting referer from buffer: buffer:#<buffer *URL-DEBUG*> target-url:#s(url "https" nil nil "correo.unican.es" nil "/ews/exchange.asmx" nil nil t nil t nil) lastloc:nil
http -> Request is: 
GET /ews/exchange.asmx HTTP/1.1
MIME-Version: 1.0
Connection: keep-alive
Extension: Security/Digest Security/SSL
Host: correo.unican.es
Accept-encoding: gzip
Accept: */*
User-Agent: URL/Emacs Emacs/27.1 (X11; x86_64-redhat-linux-gnu)


retrieval -> Spinning in url-retrieve-synchronously: nil (#<buffer  *http correo.unican.es:443*>)
http -> Calling after change function `url-http-wait-for-headers-change-function' for `#<process correo.unican.es>'
http -> url-http-wait-for-headers-change-function ( *http correo.unican.es:443*)
http -> Saw end of headers... ( *http correo.unican.es:443*)
http -> url-http-parse-response called in ( *http correo.unican.es:443*)
http -> Got a content-length, being smart about document end.
http -> Got 0-length content-length, activating callback immediately.
http -> Marking connection as free: correo.unican.es:443 #<process correo.unican.es>
http -> url-http-parse-headers called in ( *http correo.unican.es:443*)
http -> url-http-parse-response called in ( *http correo.unican.es:443*)
http -> Parsed HTTP headers: class=4 status=401
http -> Handling normal authentication
url-http-ntlm -> Buffer:  *http correo.unican.es:443*
url-http-ntlm -> Arguments: ((ntlm))
url-http-ntlm -> Previous arguments: nil
url-http-ntlm -> Stage: :request
http -> Found existing connection: correo.unican.es:443 #<process correo.unican.es>
http -> Reusing existing connection: correo.unican.es:443
http -> Marking connection as busy: correo.unican.es:443 #<process correo.unican.es>
http -> getting referer from buffer: buffer:#<buffer  *http correo.unican.es:443*> target-url:#s(url "https" nil nil "correo.unican.es" nil "/ews/exchange.asmx" nil nil t nil t nil) lastloc:nil
http -> Request is: 
GET /ews/exchange.asmx HTTP/1.1
MIME-Version: 1.0
Connection: keep-alive
Extension: Security/Digest Security/SSL
Host: correo.unican.es
Accept-encoding: gzip
Accept: */*
User-Agent: URL/Emacs Emacs/27.1 (X11; x86_64-redhat-linux-gnu)
Authorization: NTLM TlRMTVNTUAABAAAAB4IIAAAAAAAgAAAAAAAAACAAAAA=


http -> Finished parsing HTTP headers: nil
http -> Spinning waiting for headers...
retrieval -> Spinning in url-retrieve-synchronously: nil (#<buffer  *http correo.unican.es:443*>)
http -> Calling after change function `url-http-wait-for-headers-change-function' for `#<process correo.unican.es>'
http -> url-http-wait-for-headers-change-function ( *http correo.unican.es:443*-2568)
http -> Saw end of headers... ( *http correo.unican.es:443*-2568)
http -> url-http-parse-response called in ( *http correo.unican.es:443*-2568)
http -> Got a content-length, being smart about document end.
http -> Got 0-length content-length, activating callback immediately.
http -> Marking connection as free: correo.unican.es:443 #<process correo.unican.es>
http -> url-http-parse-headers called in ( *http correo.unican.es:443*-2568)
http -> url-http-parse-response called in ( *http correo.unican.es:443*-2568)
http -> Parsed HTTP headers: class=4 status=401
http -> Handling normal authentication




In GNU Emacs 27.1 (build 1, x86_64-redhat-linux-gnu, GTK+ Version 3.24.21, cairo version 1.16.0)
 of 2020-08-20 built on buildvm-x86-24.iad2.fedoraproject.org
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bug#43566: 27.1; url-http and excorporate does not authenticate

[Lars Ingebrigtsen]

Domingo Gómez Pérez <domingo.gomez@unican.es> writes:

> url-http-handle-authentication: Wrong authorization used for https://correo.unican.es/ews/exchange.asmx
> (Note, the user and password are right, since I can download the page
> using wget)

[...]

> Authorization: NTLM TlRMTVN[etc]

Is wget using NTLM authentication, though?  And how have you set up
url.el to use NTLM?

I'm not familiar with NTLM at all, so I hope there wasn't anything
secret in that base64'd auth string. 

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

bug#43566: 27.1; url-http and excorporate does not authenticate

[Domingo Gómez Pérez]

En la fecha jue, 24 sep 2020, Lars Ingebrigtsen <larsi@gnus.org>
escribió:
> Domingo Gómez Pérez <domingo.gomez@unican.es> writes:
>
>> url-http-handle-authentication: Wrong authorization used for https://correo.unican.es/ews/exchange.asmx
>> (Note, the user and password are right, since I can download the page
>> using wget)
>
> [...]
>
>> Authorization: NTLM TlRMTVN[etc]
>
> Is wget using NTLM authentication, though?  And how have you set up
> url.el to use NTLM?


Dear Lars Ingebrigtsen,

First of all, thanks for your time and help.

I would say so, because in the terminal it reads "Autenticación
seleccionada: NTLM" (sorry, it is in spanish but I think the meaning is clear).

>
> I'm not familiar with NTLM at all, so I hope there wasn't anything
> secret in that base64'd auth string. 
>
Neither I do, so I might change my password.

Thanks for the advice.

Best regards, Domingo.

bug#43566: 27.1; url-http and excorporate does not authenticate

[Lars Ingebrigtsen]

Domingo Gómez Pérez <domingo.gomez@unican.es> writes:

>> Is wget using NTLM authentication, though?  And how have you set up
>> url.el to use NTLM?
>
> Dear Lars Ingebrigtsen,
>
> First of all, thanks for your time and help.
>
> I would say so, because in the terminal it reads "Autenticación
> seleccionada: NTLM" (sorry, it is in spanish but I think the meaning is clear).

Thanks for checking.

I'm absolutely completely unfamiliar with NTLM (I assume that's a
Windows-only thing?), so somebody else will have to try debugging this.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

bug#43566: 27.1; url-http and excorporate does not authenticate

[Thomas Fitzsimmons]

Hi,

Lars Ingebrigtsen <larsi@gnus.org> writes:

> Domingo Gómez Pérez <domingo.gomez@unican.es> writes:
>
>>> Is wget using NTLM authentication, though?  And how have you set up
>>> url.el to use NTLM?
>>
>> Dear Lars Ingebrigtsen,
>>
>> First of all, thanks for your time and help.
>>
>> I would say so, because in the terminal it reads "Autenticación
>> seleccionada: NTLM" (sorry, it is in spanish but I think the meaning is clear).
>
> Thanks for checking.
>
> I'm absolutely completely unfamiliar with NTLM (I assume that's a
> Windows-only thing?), so somebody else will have to try debugging this.

It turns out that this is a regression in Emacs 27.1 introduced by the
fix for bug 27022:

   https://debbugs.gnu.org/27022

The NTLM protocol requires a three step handshake with the server, where
handshake information is passed from the client to the server via
Authorization headers.  I'm not sure if the 27022 scenario would result
in url-http-ntlm inflooping too; if it would, then the obvious
fix-of-the-fix would probably be wrong (i.e., to disable the check when
NTLM is present in the authorization string).

It also turns out that another user found the regression and filed a bug
report with a workaround a month ago:

   https://debbugs.gnu.org/44439

(From now on I'll search for "excorporate" using debbugs-gnu-search
instead of just scanning subject lines.)

I've merged bug#44439 and another report of the same problem, bug#44195,
into this one.

I no longer use the NTLM mode myself, but I did manage to independently
figure out the issue by implementing an NTLM server in elisp.  I'm going
to add it to the test suite, since otherwise it's not feasible for Emacs
maintainers to test ntlm.el properly (which is what happened in Emacs
27.1).  I can test inflooping against it too once I have the changes
ready.

Thomas

bug#43566: 27.1; url-http and excorporate does not authenticate

[William Xu]

Thomas Fitzsimmons <fitzsim@fitzsim.org> writes:

> It also turns out that another user found the regression and filed a bug
> report with a workaround a month ago:
>
>    https://debbugs.gnu.org/44439
>
> (From now on I'll search for "excorporate" using debbugs-gnu-search
> instead of just scanning subject lines.)

Thanks for merging the bugs. Somehow I had a hard time trying to search
existing bugs in debbugs web interface, before I reported mine.

So it is really a general issue.. 

-- 
William

bug#43566: 27.1; url-http and excorporate does not authenticate

[Lars Ingebrigtsen]

Thomas Fitzsimmons <fitzsim@fitzsim.org> writes:

> I no longer use the NTLM mode myself, but I did manage to independently
> figure out the issue by implementing an NTLM server in elisp.  I'm going
> to add it to the test suite, since otherwise it's not feasible for Emacs
> maintainers to test ntlm.el properly (which is what happened in Emacs
> 27.1).  I can test inflooping against it too once I have the changes
> ready.

Great!

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

bug#43566: 27.1; url-http and excorporate does not authenticate

[Thomas Fitzsimmons]

Hi Lars,

Lars Ingebrigtsen <larsi@gnus.org> writes:

> Thomas Fitzsimmons <fitzsim@fitzsim.org> writes:
>
>> I no longer use the NTLM mode myself, but I did manage to independently
>> figure out the issue by implementing an NTLM server in elisp.  I'm going
>> to add it to the test suite, since otherwise it's not feasible for Emacs
>> maintainers to test ntlm.el properly (which is what happened in Emacs
>> 27.1).  I can test inflooping against it too once I have the changes
>> ready.
>
> Great!

I've got an initial version of the test running locally.  There's still
a lot of integration to do, which I probably won't finish before Emacs
27.2.  I'd like to put in a workaround for now.

How about this patch for the emacs-27 branch?  Is there a test suite
entry for bug 27022 that I can run against my elisp NTLM server?

Thanks,
Thomas

diff --git a/lisp/url/url-http.el b/lisp/url/url-http.el
index 298f204791..89d2189ad1 100644
--- a/lisp/url/url-http.el
+++ b/lisp/url/url-http.el
@@ -461,8 +461,10 @@ url-http-handle-authentication
     ;; headers, then this means that we've already tried sending
     ;; credentials to the server, and they were wrong, so just give
     ;; up.
-    (when (assoc "Authorization" url-http-extra-headers)
-      (error "Wrong authorization used for %s" url))
+    (let ((authorization (assoc "Authorization" url-http-extra-headers)))
+      (when (and authorization
+		 (not (string-match "^NTLM " (cdr authorization))))
+	(error "Wrong authorization used for %s" url)))
 
     ;; find strongest supported auth
     (dolist (this-auth auths)

bug#43566: 27.1; url-http and excorporate does not authenticate

[Eli Zaretskii]

> From: Thomas Fitzsimmons <fitzsim@fitzsim.org>
> Date: Sun, 31 Jan 2021 10:03:19 -0500
> Cc: William Xu <william.xwl@gmail.com>, 43566@debbugs.gnu.org,
>  Jeffrey Haug <jthaug@gmail.com>,
>  Domingo Gómez Pérez
>  <domingo.gomez@unican.es>
> 
> How about this patch for the emacs-27 branch?

Since this is a regression in Emacs 27.1, I'm okay with installing
this change in the emacs-27 branch.

Thanks.

bug#43566: 27.1; url-http and excorporate does not authenticate

[Lars Ingebrigtsen]

Thomas Fitzsimmons <fitzsim@fitzsim.org> writes:

> Is there a test suite entry for bug 27022 that I can run against my
> elisp NTLM server?

Not that I know of.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

bug#43566: 27.1; url-http and excorporate does not authenticate

[Thomas Fitzsimmons]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> Thomas Fitzsimmons <fitzsim@fitzsim.org> writes:
>
>> Is there a test suite entry for bug 27022 that I can run against my
>> elisp NTLM server?
>
> Not that I know of.

OK, I pushed the workaround to emacs-27.

I'll leave this bug report open until I've pushed the test suite item to
master.

Thomas

bug#43566: 27.1; url-http and excorporate does not authenticate

[Thomas Fitzsimmons]

Thomas Fitzsimmons <fitzsim@fitzsim.org> writes:

> Lars Ingebrigtsen <larsi@gnus.org> writes:
>
>> Thomas Fitzsimmons <fitzsim@fitzsim.org> writes:
>>
>>> Is there a test suite entry for bug 27022 that I can run against my
>>> elisp NTLM server?
>>
>> Not that I know of.
>
> OK, I pushed the workaround to emacs-27.
>
> I'll leave this bug report open until I've pushed the test suite item to
> master.

I pushed to master the new tests, and some build logic to load
dependencies from GNU ELPA.

Lars, can you confirm this works for you:

    make -C test ntlm-tests

(Maybe revert my NTLM workaround in url-http.el, and confirm that the
two new tests fail for you like in this original bug report?)

By default this looks for dependencies in test/../../elpa, but you can
use:

    make -C test ntlm-tests GNU_ELPA_DIRECTORY=/path/to/elpa

if you have it checked out somewhere else.  You'll probably need to
"make externals" to pull my recent web-server.el change.

I'd like to confirm this is workable for the Emacs maintainers before
closing this bug -- i.e., that this is convenient enough that it should
catch NTLM regressions from now on.

Thanks,
Thomas

bug#43566: 27.1; url-http and excorporate does not authenticate

[Lars Ingebrigtsen]

Thomas Fitzsimmons <fitzsim@fitzsim.org> writes:

> I pushed to master the new tests, and some build logic to load
> dependencies from GNU ELPA.
>
> Lars, can you confirm this works for you:
>
>     make -C test ntlm-tests

Yup, works for me after:

> (Maybe revert my NTLM workaround in url-http.el, and confirm that the
> two new tests fail for you like in this original bug report?)
>
> By default this looks for dependencies in test/../../elpa, but you can
> use:
>
>     make -C test ntlm-tests GNU_ELPA_DIRECTORY=/path/to/elpa
>
> if you have it checked out somewhere else.  You'll probably need to
> "make externals" to pull my recent web-server.el change.

My ELPA is in that location, but I had to update it in this way before
the tests succeed -- so they fail unless you have ELPA installed.

So the tests should check for that first, otherwise most people are
going to see failing tests.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

bug#43566: 27.1; url-http and excorporate does not authenticate

[Thomas Fitzsimmons]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> Thomas Fitzsimmons <fitzsim@fitzsim.org> writes:
>
>> I pushed to master the new tests, and some build logic to load
>> dependencies from GNU ELPA.
>>
>> Lars, can you confirm this works for you:
>>
>>     make -C test ntlm-tests
>
> Yup, works for me after:

OK, thanks.

>> (Maybe revert my NTLM workaround in url-http.el, and confirm that the
>> two new tests fail for you like in this original bug report?)
>>
>> By default this looks for dependencies in test/../../elpa, but you can
>> use:
>>
>>     make -C test ntlm-tests GNU_ELPA_DIRECTORY=/path/to/elpa
>>
>> if you have it checked out somewhere else.  You'll probably need to
>> "make externals" to pull my recent web-server.el change.
>
> My ELPA is in that location, but I had to update it in this way before
> the tests succeed -- so they fail unless you have ELPA installed.

The tests will fail if web-server.el is present but out-of-date, which I
think is unavoidable.  But...

> So the tests should check for that first, otherwise most people are
> going to see failing tests.

... I did implement that; can you try moving your elpa checkout
somewhere else, or try:

    make -C test ntlm-tests GNU_ELPA_DIRECTORY=/nonexistent

and confirm you see the tests being skipped?

Thanks,
Thomas

bug#43566: 27.1; url-http and excorporate does not authenticate

[Lars Ingebrigtsen]

Thomas Fitzsimmons <fitzsim@fitzsim.org> writes:

> The tests will fail if web-server.el is present but out-of-date, which I
> think is unavoidable.  But...

Would it be possible to check the web-server.el version to make this
more robust?

>> So the tests should check for that first, otherwise most people are
>> going to see failing tests.
>
> ... I did implement that; can you try moving your elpa checkout
> somewhere else, or try:
>
>     make -C test ntlm-tests GNU_ELPA_DIRECTORY=/nonexistent
>
> and confirm you see the tests being skipped?

Yup; they're skipped if I do that.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

bug#43566: 27.1; url-http and excorporate does not authenticate

[Thomas Fitzsimmons]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> Thomas Fitzsimmons <fitzsim@fitzsim.org> writes:
>
>> The tests will fail if web-server.el is present but out-of-date, which I
>> think is unavoidable.  But...
>
> Would it be possible to check the web-server.el version to make this
> more robust?

Michael also asked about this on emacs-devel.  I looked but I can't see
a simple way to do it.  package.el functionality isn't available in this
context.

Besides, I wouldn't really want to require a specific version range of
web-server.el.  Anyone with up-to-date elpa.git won't have the issue you
ran into.  I think elpa main tip and emacs master tip should always be
compatible for these tests from now on.

>>> So the tests should check for that first, otherwise most people are
>>> going to see failing tests.
>>
>> ... I did implement that; can you try moving your elpa checkout
>> somewhere else, or try:
>>
>>     make -C test ntlm-tests GNU_ELPA_DIRECTORY=/nonexistent
>>
>> and confirm you see the tests being skipped?
>
> Yup; they're skipped if I do that.

OK, thanks.

Thomas

bug#43566: 27.1; url-http and excorporate does not authenticate

[Thomas Fitzsimmons]

Thomas Fitzsimmons <fitzsim@fitzsim.org> writes:

> Lars Ingebrigtsen <larsi@gnus.org> writes:
>
>> Thomas Fitzsimmons <fitzsim@fitzsim.org> writes:
>>
>>> The tests will fail if web-server.el is present but out-of-date, which I
>>> think is unavoidable.  But...
>>
>> Would it be possible to check the web-server.el version to make this
>> more robust?
>
> Michael also asked about this on emacs-devel.  I looked but I can't see
> a simple way to do it.  package.el functionality isn't available in this
> context.

Michael wanted a general approach to requiring specific GNU ELPA package
versions; he suggested an implementation which I adapted and pushed to
master.  You can try it by alternating between revisions
a1c767fe56acfed6627682fadc337203f3b8678c and
4edcba28826869b07f622fd83f6aab96fd8e4d19 of web-server.el and confirming
that for the former commit the tests are skipped and for the latter,
they're run.

I also tested how url-retrieve-synchronously behaves with NTLM
authentication when the authinfo password is wrong.  It doesn't
infinite-loop -- it tries once with the authinfo credentials and if they
fail, it prompts the user for a username and password.  Therefore, the
patch that caused the regression isn't needed for NTLM and the
workaround patch I pushed is fine as-is.

I'm marking this bug done.

Thanks,
Thomas

bug#43566: 27.1; url-http and excorporate does not authenticate

[Thomas Fitzsimmons]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> Domingo Gómez Pérez <domingo.gomez@unican.es> writes:
>
>> url-http-handle-authentication: Wrong authorization used for https://correo.unican.es/ews/exchange.asmx
>> (Note, the user and password are right, since I can download the page
>> using wget)
>
> [...]
>
>> Authorization: NTLM TlRMTVN[etc]
>
> Is wget using NTLM authentication, though?  And how have you set up
> url.el to use NTLM?
>
> I'm not familiar with NTLM at all, so I hope there wasn't anything
> secret in that base64'd auth string. 

No, that's the Type 1 message which is a generic request to the server
to initiate the NTLM back-n-forth (there are three message types).  It
doesn't contain a username or password.

Thomas

bug#43566: 27.1; url-http and excorporate does not authenticate

[Thomas Fitzsimmons]

Hi Domingo,

Domingo Gómez Pérez <domingo.gomez@unican.es> writes:

> I am trying to use excorporate, v. 0.7, so I am trying to locate the
> problem looking at the Info page, section Troubleshooting.

Thanks for reporting.

First, Excorporate 0.7.0 is an old release.  Are you able to install
Excorporate 0.8.3 and its dependencies from GNU ELPA?  There have been a
few compatibility improvements between 0.7.0 and 0.8.3, so it's worth a
try for your specific issue.  If it doesn't work, can you retry the
Troubleshooting section?  It's probably best if you redact the
Authorization headers with [...] before replying.

I don't see any "HTTP result buffer" in the *Messages* text you posted.
It seems like the Type 2 stage of NTLM is not being reached.

Thomas

bug#43566: 27.1; url-http and excorporate does not authenticate

[Domingo Gómez Pérez]

[-- Attachment #1: Type: text/plain, Size: 1466 bytes --]

En la fecha mar, 29 sep 2020, Thomas Fitzsimmons <fitzsim@fitzsim.org>
escribió:
> Hi Domingo,
>
> Domingo Gómez Pérez <domingo.gomez@unican.es> writes:
>
>> I am trying to use excorporate, v. 0.7, so I am trying to locate the
>> problem looking at the Info page, section Troubleshooting.
>
> Thanks for reporting.
>
> First, Excorporate 0.7.0 is an old release.  Are you able to install
> Excorporate 0.8.3 and its dependencies from GNU ELPA?  There have been a
> few compatibility improvements between 0.7.0 and 0.8.3, so it's worth a
> try for your specific issue.


Dear Thomas,

First of all, thank you for your work in excorporate. I don't know what
happen, because it used to work just fine for me.


> If it doesn't work, can you retry the
> Troubleshooting section?  It's probably best if        you redact the
> Authorization headers with [...] before replying.
>
I remove the part where Authorization appear.

I attach here the results of executing

(setq URL-STRING "https://correo.unican.es/ews/exchange.asmx")
     (progn
       (setq url-debug 1)
       (url-retrieve-synchronously URL-STRING)
       (dolist (p (seq-filter
                   (lambda (b) (string-match " *http*" (buffer-name b)))
                   (buffer-list)))
         (message "HTTP result buffer: \"%s\"\n%s"
                  (buffer-name p)
                  (with-current-buffer p (buffer-string))))
       "check *Messages*")


[-- Attachment #2: output.txt --]
[-- Type: text/plain, Size: 3165 bytes --]

http -> Contacting host: correo.unican.es:443
http -> Marking connection as busy: correo.unican.es:443 #<process correo.unican.es>
http -> getting referer from buffer: buffer:#<buffer *scratch*> target-url:#s(url "https" nil nil "correo.unican.es" nil "/ews/exchange.asmx" nil nil t nil t nil) lastloc:nil
http -> Request is: 
GET /ews/exchange.asmx HTTP/1.1
MIME-Version: 1.0
Connection: keep-alive
Extension: Security/Digest Security/SSL
Host: correo.unican.es
Accept-encoding: gzip
Accept: */*
User-Agent: URL/Emacs Emacs/27.1 (X11; x86_64-redhat-linux-gnu)
Authorization: Basic ...


retrieval -> Spinning in url-retrieve-synchronously: nil (#<buffer  *http correo.unican.es:443*>)
http -> Calling after change function `url-http-wait-for-headers-change-function' for `#<process correo.unican.es>'
http -> url-http-wait-for-headers-change-function ( *http correo.unican.es:443*)
http -> Saw end of headers... ( *http correo.unican.es:443*)
http -> url-http-parse-response called in ( *http correo.unican.es:443*)
http -> Got a content-length, being smart about document end.
http -> Got 0-length content-length, activating callback immediately.
http -> Marking connection as free: correo.unican.es:443 #<process correo.unican.es>
http -> url-http-parse-headers called in ( *http correo.unican.es:443*)
http -> url-http-parse-response called in ( *http correo.unican.es:443*)
http -> Parsed HTTP headers: class=4 status=401
http -> Handling normal authentication
http -> Found existing connection: correo.unican.es:443 #<process correo.unican.es>
http -> Reusing existing connection: correo.unican.es:443
http -> Marking connection as busy: correo.unican.es:443 #<process correo.unican.es>
http -> getting referer from buffer: buffer:#<buffer  *http correo.unican.es:443*> target-url:#s(url "https" nil nil "correo.unican.es" nil "/ews/exchange.asmx" nil nil t nil t nil) lastloc:nil
http -> Request is: 
GET /ews/exchange.asmx HTTP/1.1
MIME-Version: 1.0
Connection: keep-alive
Extension: Security/Digest Security/SSL
Host: correo.unican.es
Accept-encoding: gzip
Accept: */*
User-Agent: URL/Emacs Emacs/27.1 (X11; x86_64-redhat-linux-gnu)
Authorization: Basic ...


http -> Finished parsing HTTP headers: nil
http -> Spinning waiting for headers...
retrieval -> Spinning in url-retrieve-synchronously: nil (#<buffer  *http correo.unican.es:443*>)
http -> Calling after change function `url-http-wait-for-headers-change-function' for `#<process correo.unican.es>'
http -> url-http-wait-for-headers-change-function ( *http correo.unican.es:443*-164681)
http -> Saw end of headers... ( *http correo.unican.es:443*-164681)
http -> url-http-parse-response called in ( *http correo.unican.es:443*-164681)
http -> Got a content-length, being smart about document end.
http -> Got 0-length content-length, activating callback immediately.
http -> Marking connection as free: correo.unican.es:443 #<process correo.unican.es>
http -> url-http-parse-headers called in ( *http correo.unican.es:443*-164681)
http -> url-http-parse-response called in ( *http correo.unican.es:443*-164681)
http -> Parsed HTTP headers: class=4 status=401
http -> Handling normal authentication

[-- Attachment #3: Type: text/plain, Size: 17 bytes --]



Best, Domingo.

bug#43566: 27.1; url-http and excorporate does not authenticate

[Lars Ingebrigtsen]

(Please keep the debbugs address in the Cc headers.)

"Gomez Perez, Domingo" <domingo.gomez@unican.es> writes:

>  I'm absolutely completely unfamiliar with NTLM (I assume that's a
>  Windows-only thing?), so somebody else will have to try debugging this.
>
> By the way, this is a Linux machine. 
>
> Also it happens in Mac OS x. 

That's how little I know about NTLM.  :-)