[Bug 1758050] [NEW] Interrupting pinentry-tty with ctrl-c leaves the terminal broken

[Jani Uusitalo]

Public bug reported:

When pinentry-tty is used to prompt for the password, interrupting the
prompt using ctrl-c leaves the terminal only partially working: only
some letter keys are echoed back.

The terminal remains in this broken state for about a minute, after
which it resets itself and everything starts working again.

Below, I'm swiping through all alphabet and numeric keys of my keyboard
at both 14.54, where only "469+esgxb" gets through, and again at 14.55
(the last line), where they all come through.


14.54 jani at saegusa:testejä$ export LC_ALL=C
14.54 jani at saegusa:testejä$ { sleep 60; echo "60 seconds passed"; } & /usr/bin/gpg -d passwords.gpg
[1] 12375
gpg: AES encrypted data
Enter passphrase

Passphrase: 
gpg: signal Interrupt caught ... exiting

14.54 jani at saegusa:testejä$ 469+esgxb^C
14.55 jani at saegusa:testejä$ 60 seconds passed


[1]+  Done                    { sleep 60; echo "60 seconds passed"; }
14.55 jani at saegusa:testejä$ 1234567890+wertyuiopåasdfghjklöäzxcvbnm,.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: pinentry-tty 1.1.0-1
ProcVersionSignature: Ubuntu 4.15.0-12.13-generic 4.15.7
Uname: Linux 4.15.0-12-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Thu Mar 22 14:58:14 2018
Dependencies:
 gcc-8-base 8-20180319-1ubuntu2
 libassuan0 2.5.1-2
 libc6 2.27-0ubuntu2
 libgcc1 1:8-20180319-1ubuntu2
 libgpg-error0 1.27-6
InstallationDate: Installed on 2016-10-13 (524 days ago)
InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=fi_FI.UTF-8
 SHELL=/bin/bash
SourcePackage: pinentry
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: pinentry (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic

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https://bugs.launchpad.net/bugs/1758050

Title:
  Interrupting pinentry-tty with ctrl-c leaves the terminal broken

Status in pinentry package in Ubuntu:
  New

Bug description:
  When pinentry-tty is used to prompt for the password, interrupting the
  prompt using ctrl-c leaves the terminal only partially working: only
  some letter keys are echoed back.

  The terminal remains in this broken state for about a minute, after
  which it resets itself and everything starts working again.

  Below, I'm swiping through all alphabet and numeric keys of my
  keyboard at both 14.54, where only "469+esgxb" gets through, and again
  at 14.55 (the last line), where they all come through.

  
  14.54 jani at saegusa:testejä$ export LC_ALL=C
  14.54 jani at saegusa:testejä$ { sleep 60; echo "60 seconds passed"; } & /usr/bin/gpg -d passwords.gpg
  [1] 12375
  gpg: AES encrypted data
  Enter passphrase

  Passphrase: 
  gpg: signal Interrupt caught ... exiting

  14.54 jani at saegusa:testejä$ 469+esgxb^C
  14.55 jani at saegusa:testejä$ 60 seconds passed


  [1]+  Done                    { sleep 60; echo "60 seconds passed"; }
  14.55 jani at saegusa:testejä$ 1234567890+wertyuiopåasdfghjklöäzxcvbnm,.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: pinentry-tty 1.1.0-1
  ProcVersionSignature: Ubuntu 4.15.0-12.13-generic 4.15.7
  Uname: Linux 4.15.0-12-generic x86_64
  ApportVersion: 2.20.8-0ubuntu10
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Mar 22 14:58:14 2018
  Dependencies:
   gcc-8-base 8-20180319-1ubuntu2
   libassuan0 2.5.1-2
   libc6 2.27-0ubuntu2
   libgcc1 1:8-20180319-1ubuntu2
   libgpg-error0 1.27-6
  InstallationDate: Installed on 2016-10-13 (524 days ago)
  InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fi_FI.UTF-8
   SHELL=/bin/bash
  SourcePackage: pinentry
  UpgradeStatus: No upgrade log present (probably fresh install)

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