GNU bug report logs - #13193
24.3.50; EasyPG with Gnupg set up to use card reader; handling card not inserted

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: asjo <at> koldfront.dk (Adam Sjøgren)
To: bug-gnu-emacs <at> gnu.org
Subject: 24.3.50; EasyPG with Gnupg set up to use card reader;
	handling card not inserted
Date: Sat, 15 Dec 2012 14:45:01 +0100

I have Gnupg set up to use a card reader which holds my private key.

When I try to sign a region with EasyPG (starting "emacs -Q" and using
M-x epa-sign-region), and haven't inserted my card in the reader, I get
an error:

  Signing...done
  epa-sign-region: Wrong type argument: stringp, nil

And the region is cut (i.e. disappears).

If I M-x toggle-debug-on-error, the backtrace is this:

  Debugger entered--Lisp error: (wrong-type-argument stringp nil)
    epa--decode-coding-string(nil utf-8-unix)
    epa-sign-region(192 197 nil clear)
    call-interactively(epa-sign-region record nil)
    command-execute(epa-sign-region record)
    execute-extended-command(nil "epa-sign-region")
    call-interactively(execute-extended-command nil nil)

If I enable epg-debug, I get this in the  *epg-debug* buffer:

  /usr/bin/gpg --no-tty --status-fd 1 --yes --use-agent --enable-progress-filter --command-fd 0 --output /tmp/epg-output10115pYs --clearsign
  [GNUPG:] PROGRESS stdin ? 0 0
  [GNUPG:] BEGIN_SIGNING
  [GNUPG:] PROGRESS stdin ? 5 0
  [GNUPG:] CARDCTRL 4
  gpg: selecting openpgp failed: unknown command
  gpg: signing failed: general error
  gpg: [stdin]: clearsign failed: general error

I was expecting a message telling me that the card was unavailable, that
I should insert it, or something similar - and that the region was still
presence when an error occurred.

If I insert the card and try M-x epa-sign-region again, a pinentry
window pops up, and the region is signed as expected. The output in the
*epg-debug* buffer is then:

  /usr/bin/gpg --no-tty --status-fd 1 --yes --use-agent --enable-progress-filter --command-fd 0 --output /tmp/epg-output101922Sm --clearsign
  [GNUPG:] PROGRESS stdin ? 0 0
  [GNUPG:] BEGIN_SIGNING
  [GNUPG:] PROGRESS stdin ? 5 0
  [GNUPG:] CARDCTRL 3 
  [GNUPG:] SIG_CREATED C 1 2 01 1355578571 C40B1B7D09A9326AFD181FB7B728D4441E65DD19

Perhaps the 'CARDCTRL 4' can be used to distinguish the cases?

I found this doing a quick search on GnuPG and CARDCTRL:

   "CARDCTRL <what> [<serialno>]
        This is used to control smartcard operations.
        Defined values for WHAT are:
           1 = Request insertion of a card.  Serialnumber may be given
               to request a specific card.
           2 = Request removal of a card.
           3 = Card with serialnumber detected
           4 = No card available.
           5 = No card reader available"

       - http://lists.gnupg.org/pipermail/gnupg-devel/2005-June/022091.html

Let me know if I can assist by testing or trying to add some code
(please point me towards the right function, in that case).

I am using gpg (GnuPG) 1.4.12.

Thanks!


In GNU Emacs 24.3.50.1 (x86_64-pc-linux-gnu, GTK+ Version 3.4.2)
 of 2012-12-15 on topper, modified by Debian
 (emacs-snapshot package, version 2:20121209-1koldfront1)
Windowing system distributor `The X.Org Foundation', version 11.0.11204000
System Description:	Debian GNU/Linux 7.0 (wheezy)

Configured using:
 `configure '--build' 'x86_64-linux-gnu' '--host' 'x86_64-linux-gnu'
 '--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib'
 '--localstatedir=/var' '--infodir=/usr/share/info'
 '--mandir=/usr/share/man' '--with-pop=yes'
 '--enable-locallisppath=/etc/emacs-snapshot:/etc/emacs:/usr/local/share/emacs/24.3.50/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.3.50/site-lisp:/usr/share/emacs/site-lisp'
 '--without-compress-info' '--with-crt-dir=/usr/lib/x86_64-linux-gnu/'
 '--with-x=yes' '--with-x-toolkit=gtk3' '--with-imagemagick=yes'
 'build_alias=x86_64-linux-gnu' 'host_alias=x86_64-linux-gnu'
 'CFLAGS=-DDEBIAN -DSITELOAD_PURESIZE_EXTRA=5000 -g -O2' 'LDFLAGS=-g
 -Wl,--as-needed -znocombreloc' 'CPPFLAGS=-D_FORTIFY_SOURCE=2''

Important settings:
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  value of $LC_CTYPE: da_DK.UTF-8
  value of $LC_MESSAGES: en_GB.UTF-8
  value of $LC_NUMERIC: en_GB.UTF-8
  value of $LC_TIME: en_GB.UTF-8
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  default enable-multibyte-characters: t

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~/elisp/gnus/lisp/nnimap hides /usr/share/emacs/24.3.50/lisp/gnus/nnimap
~/elisp/gnus/lisp/utf7 hides /usr/share/emacs/24.3.50/lisp/gnus/utf7
~/elisp/gnus/lisp/gnus-topic hides /usr/share/emacs/24.3.50/lisp/gnus/gnus-topic
~/elisp/gnus/lisp/mm-view hides /usr/share/emacs/24.3.50/lisp/gnus/mm-view
~/elisp/gnus/lisp/starttls hides /usr/share/emacs/24.3.50/lisp/gnus/starttls
~/elisp/gnus/lisp/compface hides /usr/share/emacs/24.3.50/lisp/gnus/compface
~/elisp/gnus/lisp/gnus-dup hides /usr/share/emacs/24.3.50/lisp/gnus/gnus-dup
~/elisp/gnus/lisp/gnus-agent hides /usr/share/emacs/24.3.50/lisp/gnus/gnus-agent
~/elisp/gnus/lisp/canlock hides /usr/share/emacs/24.3.50/lisp/gnus/canlock
~/elisp/gnus/lisp/gnus-eform hides /usr/share/emacs/24.3.50/lisp/gnus/gnus-eform
~/elisp/gnus/lisp/gnus-cite hides /usr/share/emacs/24.3.50/lisp/gnus/gnus-cite
~/elisp/gnus/lisp/auth-source hides /usr/share/emacs/24.3.50/lisp/gnus/auth-source
~/elisp/gnus/lisp/gnus-gravatar hides /usr/share/emacs/24.3.50/lisp/gnus/gnus-gravatar
~/elisp/gnus/lisp/gnus-cus hides /usr/share/emacs/24.3.50/lisp/gnus/gnus-cus
~/elisp/gnus/lisp/parse-time hides /usr/share/emacs/24.3.50/lisp/calendar/parse-time
~/elisp/gnus/lisp/time-date hides /usr/share/emacs/24.3.50/lisp/calendar/time-date

Features:
(shadow sort gnus-cite emacsbug sendmail help-mode gnus-notifications
notifications dbus gnus-topic netrc network-stream starttls tls nnml
bbdb-gnus bbdb-snarf nnnil gnus-demon mozmail gnus-delay gnus-draft
gnus-agent gnus-srvr gnus-score score-mode nnvirtual nntp gnus-cache
nndraft nnmh mail-extr spam spam-stat bbdb-com gnus-uu yenc gnus-msg
supercite regi gnus-html browse-url xml url-cache mm-url bbdb-picture
gnus-art mm-uu mml2015 epg-config mm-view mml-smime smime dig gnus-fun
hashcash gnus-load paren cus-start cus-load tramp tramp-compat
tramp-loaddefs shell pcomplete comint ansi-color ring cperl-mode
uniquify vc vc-dispatcher bbdb timezone boxquote rect gnus-namazu
warnings advice gnus-sum gnus-group gnus-undo gnus-start gnus-spec
gnus-win nnmail gnus-int gnus-range mail-source message idna cl-macs gv
format-spec rfc822 mml mml-sec mm-decode mm-bodies mm-encode mail-parse
rfc2231 rfc2047 rfc2045 ietf-drums mailabbrev gmm-utils mailheader gnus
gnus-ems gnus-compat url url-proxy url-privacy url-expand url-methods
url-history url-cookie url-domsuf url-util url-parse auth-source eieio
byte-opt bytecomp byte-compile cconv password-cache url-vars mailcap
help-fns wid-edit nnoo nnheader gnus-util time-date mm-util mail-prsvr
mail-utils info easymenu gnutls edmacro kmacro server debian-el
debian-el-loaddefs mmm-auto mmm-vars mmm-compat cl nadvice cl-lib
emacs-goodies-el emacs-goodies-custom emacs-goodies-loaddefs easy-mmode
dpkg-dev-el dpkg-dev-el-loaddefs bbdb-autoloads preview-latex tex-site
auto-loads tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win
x-dnd tool-bar dnd fontset image regexp-opt fringe tabulated-list
newcomment lisp-mode register page menu-bar rfn-eshadow timer select
scroll-bar mouse jit-lock font-lock syntax facemenu font-core frame cham
georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese hebrew greek romanian slovak czech european ethiopic
indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple
abbrev minibuffer loaddefs button faces cus-face macroexp files
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget hashtable-print-readable backquote make-network-process
dbusbind dynamic-setting system-font-setting font-render-setting
move-toolbar gtk x-toolkit x multi-tty emacs)

-- 
 "the only sound is drum machine which runs all 24            Adam Sjøgren
  hours in the office, always on, always set to          asjo <at> koldfront.dk
  SAMBA pattern."

Message #8 received at 13193 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: asjo <at> koldfront.dk (Adam Sjøgren)
Cc: 13193 <at> debbugs.gnu.org
Subject: Re: bug#13193: 24.3.50; EasyPG with Gnupg set up to use card
 reader; handling card not inserted
Date: Tue, 10 May 2022 14:25:40 +0200

asjo <at> koldfront.dk (Adam Sjøgren) writes:

> I have Gnupg set up to use a card reader which holds my private key.
>
> When I try to sign a region with EasyPG (starting "emacs -Q" and using
> M-x epa-sign-region), and haven't inserted my card in the reader, I get
> an error:
>
>   Signing...done
>   epa-sign-region: Wrong type argument: stringp, nil
>
> And the region is cut (i.e. disappears).
>
> If I M-x toggle-debug-on-error, the backtrace is this:
>
>   Debugger entered--Lisp error: (wrong-type-argument stringp nil)
>     epa--decode-coding-string(nil utf-8-unix)
>     epa-sign-region(192 197 nil clear)

(I'm going through old bug reports that unfortunately weren't resolved
at the time.)

I don't have a card reader, so I can't test this, but I extremely
vaguely remember reading somebody writing about this and that it worked.

Are you still seeing this issue in recent Emacs versions?

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

Message #13 received at 13193 <at> debbugs.gnu.org (full text, mbox):

From: Adam Sjøgren <asjo <at> koldfront.dk>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 13193 <at> debbugs.gnu.org
Subject: Re: bug#13193: 24.3.50; EasyPG with Gnupg set up to use card
 reader; handling card not inserted
Date: Tue, 10 May 2022 18:58:15 +0200

Lars writes:

> asjo <at> koldfront.dk (Adam Sjøgren) writes:
>
>> When I try to sign a region with EasyPG (starting "emacs -Q" and using
>> M-x epa-sign-region), and haven't inserted my card in the reader, I get
>> an error:
>>
>>   Signing...done
>>   epa-sign-region: Wrong type argument: stringp, nil
>>
>> And the region is cut (i.e. disappears).

> I don't have a card reader, so I can't test this, but I extremely
> vaguely remember reading somebody writing about this and that it worked.
>
> Are you still seeing this issue in recent Emacs versions?

I cannot reproduce the problem now, so this bug can be closed.


  Best regards,

    Aam

-- 
 "The problem with the future is that it keeps              Adam Sjøgren
  turning into the present."                           asjo <at> koldfront.dk

Message #18 received at 13193 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Adam Sjøgren <asjo <at> koldfront.dk>
Cc: 13193 <at> debbugs.gnu.org
Subject: Re: bug#13193: 24.3.50; EasyPG with Gnupg set up to use card
 reader; handling card not inserted
Date: Wed, 11 May 2022 13:32:30 +0200

Adam Sjøgren <asjo <at> koldfront.dk> writes:

> I cannot reproduce the problem now, so this bug can be closed.

Thanks for checking; I'm closing this report, then.

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

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