39 lines
1.5 KiB
Plaintext
39 lines
1.5 KiB
Plaintext
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#!/bin/sh
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# Choose between pinentry-tty and pinentry-x11 based on whether
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# $PINENTRY_USER_DATA contains USE_TTY=1
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#
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# Based on:
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# https://kevinlocke.name/bits/2019/07/31/prefer-terminal-for-gpg-pinentry
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#
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# Note: Environment detection is difficult.
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# - stdin is Assuan pipe, preventing tty checking
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# - configuration info (e.g. ttyname) is passed via Assuan pipe, preventing
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# parsing or fallback without implementing Assuan protocol.
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# - environment is sanitized by atfork_cb in call-pinentry.c (removing $GPG_TTY)
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#
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# $PINENTRY_USER_DATA is preserved since 2.08 https://dev.gnupg.org/T799
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#
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# Format of $PINENTRY_USER_DATA not specified (that I can find), pinentry-mac
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# assumes comma-separated sequence of NAME=VALUE with no escaping mechanism
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# https://github.com/GPGTools/pinentry-mac/blob/v0.9.4/Source/AppDelegate.m#L78
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# and recognizes USE_CURSES=1 for curses fallback
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# https://github.com/GPGTools/pinentry-mac/pull/2
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#
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# To the extent possible under law, Kevin Locke <kevin@kevinlocke.name> has
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# waived all copyright and related or neighboring rights to this work
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# under the terms of CC0: https://creativecommons.org/publicdomain/zero/1.0/
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set -xCeu
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# Use pinentry-tty if $PINENTRY_USER_DATA contains USE_TTY=1
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case "${PINENTRY_USER_DATA-}" in
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*USE_TTY=1*)
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# Note: Change to pinentry-curses if a Curses UI is preferred.
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exec pinentry-tty "$@"
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;;
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esac
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# Otherwise, use any X11 UI (configured by Debian Alternatives System)
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# Note: Will fall back to curses if $DISPLAY is not available.
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exec pinentry-qt5 "$@"
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