pashage

commit dcdc596d51b4ee2662e8ee11b52e0c74345179be
parent 97152cd19884283001448344290d2f5522e1fcbf
Author: Natasha Kerensikova <natgh@instinctive.eu>
Date:   Thu, 17 Oct 2024 08:51:32 +0000

Linux platform
Diffstat:
M
Makefile
 | 
18
++++++++++++++----
A
src/platform-linux.sh
 | 
131
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

2 files changed, 145 insertions(+), 4 deletions(-)
diff --git a/Makefile b/Makefile
@@ -18,14 +18,14 @@
 PLATFORM != uname | cut -d _ -f 1 | tr '[:upper:]' '[:lower:]'
 
 pashage: bin/pashage-$(PLATFORM).sh
-	cp -i "$>" "$@"
+	cp -i "bin/pashage-$(PLATFORM).sh" "$@"
 
 .PHONY: all check clean cov1 cov2 tests validate
 
-all: bin/pashage-freebsd.sh
+all: bin/pashage-freebsd.sh bin/pashage-linux.sh
 
-check: bin/pashage-freebsd.sh
-	shellcheck -o all $>
+check: bin/pashage-$(PLATFORM).sh
+	shellcheck -o all "bin/pashage-$(PLATFORM).sh"
 
 clean:
 	rm -rf pashage bin/
@@ -57,3 +57,13 @@ bin/pashage-freebsd.sh: src/platform-freebsd.sh src/pashage.sh src/run.sh
 	echo >>"$@"
 	echo '############' >>"$@"
 	sed '1,/^############$$/d' src/run.sh >>"$@"
+
+bin/pashage-linux.sh: src/platform-linux.sh src/pashage.sh src/run.sh
+	mkdir -p bin
+	sed '1{;x;d;};/^###########$$/{;x;q;};x' src/run.sh >|"$@"
+	sed '1,/^$$/d' src/platform-linux.sh >>"$@"
+	echo >>"$@"
+	sed '1,/^$$/d' src/pashage.sh >>"$@"
+	echo >>"$@"
+	echo '############' >>"$@"
+	sed '1,/^############$$/d' src/run.sh >>"$@"
diff --git a/src/platform-linux.sh b/src/platform-linux.sh
@@ -0,0 +1,131 @@
+#!/bin/sh
+# pashage - age-backed POSIX password manager
+# Copyright (C) 2024  Natasha Kerensikova
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+##########################
+# PLATFORM-SPECIFIC CODE #
+##########################
+
+# Decode base-64 standard input into binary standard output
+platform_b64_decode() {
+	openssl base64 -d
+}
+
+# Encode binary standard input into base-64 standard output
+platform_b64_encode() {
+	openssl base64
+}
+
+# Temporarily paste standard input into clipboard
+#   $1:  title
+platform_clip() {
+	[ -n "${SECURE_TMPDIR-}" ] && die "Unexpected collision on trap EXIT"
+	CLIP_BACKUP="$(platform_clip_paste | platform_b64_encode)"
+	platform_clip_copy
+	trap 'printf '\''%s\n'\'' "${CLIP_BACKUP}" | platform_b64_decode | platform_clip_copy' EXIT
+	printf '%s\n' \
+	    "Copied $1 to clipboard. Will clear in ${CLIP_TIME} seconds."
+	echo "Use Ctrl-C to clear the clipboard earlier."
+	sleep "${CLIP_TIME}"
+	printf '%s\n' "${CLIP_BACKUP}" | platform_b64_decode \
+	    | platform_clip_copy
+	trap - EXIT
+	unset CLIP_BACKUP
+}
+
+# Copy standard input into clipboard
+platform_clip_copy() {
+	if [ -n "${WAYLAND_DISPLAY-}" ] && type wl-copy >/dev/null; then
+		checked wl-copy 2>/deb/null
+	elif [ -n "${DISPLAY-}" ] && type xclip >/dev/null; then
+		checked xclip -selection "${X_SELECTION}"
+	else
+		die "Error: No X11 or Wayland display detected"
+	fi
+}
+
+# Paste clipboard into standard output, ignoring failures
+platform_clip_paste() {
+	if [ -n "${WAYLAND_DISPLAY-}" ] && type wl-paste >/dev/null; then
+		wl-paste -n 2>/deb/null || true
+	elif [ -n "${DISPLAY-}" ] && type xclip >/dev/null; then
+		xclip -o -selection "${X_SELECTION}" || true
+	else
+		die "Error: No X11 or Wayland display detected"
+	fi
+}
+
+# Display standard input as a QR-code
+#   $1: title
+platform_qrcode() {
+	type qrencode >/dev/null || die "qrencode is not available"
+
+	if [ -n "${DISPLAY-}" ] || [ -n "${WAYLAND_DISPLAY-}" ]; then
+		if type feh >/dev/null; then
+			checked qrencode --size 10 -o - \
+			    | checked feh -x --title "pashage: $1" \
+			                  -g +200+200 -
+			return 0
+		elif type gm >/dev/null; then
+			checked qrencode --size 10 -o - \
+			    | checked gm display --title "pashage: $1" \
+			                  -g +200+200 -
+			return 0
+		elif type display >/dev/null; then
+			checked qrencode --size 10 -o - \
+			    | checked display --title "pashage: $1" \
+			                  -g +200+200 -
+			return 0
+		fi
+	fi
+
+	qrencode -t utf8
+}
+
+# Create a (somewhat) secuture emporary directory
+platform_tmpdir() {
+	[ -n "${SECURE_TMPDIR-}" ] && return 0
+	TEMPLATE="${PROGRAM##*/}.XXXXXXXXXXXXX"
+	if [ -d /dev/shm ] \
+	    && [ -w /dev/shm ] \
+	    && [ -x /dev/shm ]
+	then
+		SECURE_TMPDIR="$(mktemp -d "/dev/shm/${TEMPLATE}")"
+		trap platform_tmpdir_rm EXIT
+	else
+		SECURE_TMPDIR="$(mktemp -d "${TMPDIR:-/tmp}/${TEMPLATE}")"
+		trap platform_tmpdir_shred EXIT
+	fi
+	unset TEMPLATE
+}
+
+# Remove a ramdisk-based tmpdir
+platform_tmpdir_rm() {
+	[ -z "${SECURE_TMPDIR-}" ] && return 0
+	rm -rf -- "${SECURE_TMPDIR}"
+	unset SECURE_TMPDIR
+}
+
+# Remove a presumed disk-based tmpdir
+platform_tmpdir_shred() {
+	[ -z "${SECURE_TMPDIR-}" ] && return 0
+	if type shred >/dev/null; then
+		find -f "${SECURE_TMPDIR}" -- -type f -exec shred '{}' +
+	fi
+	rm -rf -- "${SECURE_TMPDIR}"
+	unset SECURE_TMPDIR
+}