neopassmenu/neopassmenu.sh

#!/usr/bin/env sh

multi=false
clipboard=false
type=false
add=false
file=""
dir=""

checkmenu(){
	for i in "$@"; do
		if command -v "$i" >/dev/null 2>&1; then
			echo "$i";
			break;
		fi
	done
}

if [ -n "$WAYLAND_DISPLAY" ]; then
	x11=false
	if [ -z "$DMENU_COMMAND" ]; then
		dmenu="$(checkmenu dmenu-wl bemenu tofi)"
		case "$dmenu" in
			rofi)
				dmenu="rofi -dmenu"
				;;
		esac
	else
		dmenu="$DMENU_COMMAND"
	fi
else
	x11=true
	if [ -z "$DMENU_COMMAND" ]; then
		dmenu="$(checkmenu dmenu rofi bemenu)"
	else
		dmenu="$DMENU_COMMAND"
	fi
fi

if [ -z "$dmenu" ]; then
	echo "No menu found, specify menu with the DMENU_COMMAND environment variable or install a known menu"
	exit 1;
fi


usage="$(printf "USAGE:\nneopassmenu [OPTS] [Pass Entry]\n\nOptions:\n-a\t\tGenerate or modify a password\n-c\t\tCopy to clipboard instead of printing to stdout\n-t\t\tSimulate typing instead of printing to stdout\n-m\t\tSelect a specific line from a multiline file\n-h\\t\tPrint usage information\n\nCONFIGURATION:\nEnvironement variables:\nDMENU_COMMAND\tSpecify dmenu command (default: dmenu)")"

cd "${PASSWORD_STORE_DIR:-"$HOME/.password-store"}" || exit 2

while [ "$#" -gt 0 ]; do
	case "$1" in
		-a)
			add=true
			shift
			;;
		-c)
			clipboard=true
			type=false
			shift
			;;
		-t)
			clipboard=false
			type=true
			shift
			;;
		-m)
			multi=true
			shift
			;;
		-h)
			echo "$usage"
			exit 0
			;;
		*)
			if [ -f "$1" ] || [ -f "${1}.gpg" ]; then
				file="$1"
				shift
			elif [ -d "$1" ]; then
				dir="$1"
				shift
			else
				echo "$usage" >&2
				exit 1
			fi
			;;
	esac
done

if [ -z "$file" ]; then
	while true; do
		file="$(printf "..\n%s" "$(find "./$dir" -maxdepth 1)" | sed -e 's#^'"./$dir"'##;s#^/##;s/.gpg$//' -e '/^$/d; /^.gpg-id$/d; /^.git\(attributes\)\{0,1\}$/d' | $dmenu)"
		if [ -z "$dir" ]; then
			newdir="$file"
		else
			newdir="${dir%/}/$file"
		fi
		if [ -z "$file" ]; then
			exit 127
		elif [ "$file" = ".." ]; then
			dir="${dir%/}"
			if echo "$dir" | grep -q "/"; then
				dir="${dir%/*}"
			else
				dir=""
			fi
		elif [ -d "$newdir" ]; then
			dir="$newdir"
		elif [ -f "$newdir" ] || [ -f "${newdir}.gpg" ] || "$add"; then
			file="$newdir"
			break
		else
			break
		fi
	done
fi

if "$add"; then
	if [ -f "${file}.gpg" ]; then
		pass "$file" > /tmp/pass.txt
	fi
	printf "\n\n%s" "$(dd count=2 if=/dev/random of=/dev/stdout 2>/dev/null ibs=512 obs=512 | uuencode -m /dev/stdout | tail -n +2 | tr -d '\n')" >> /tmp/pass.txt
	fileopener /tmp/pass.txt
	if [ -n "$(cat /tmp/pass.txt)" ]; then
		save="$(printf "yes\nno" | $dmenu -p "Save changes? ")"
		if [ "$save" = "yes" ]; then
			cat /tmp/pass.txt | pass add -m -f "$file"
		fi
		rm /tmp/pass.txt
		exit 0
	fi
	rm /tmp/pass.txt
	exit 1
fi

if ! [ -f "$file" ] && ! [ -f "${file}.gpg" ]; then
	exit 127
fi

if $clipboard && ! $multi; then
	printf "%s" "$(pass "$file")" | cb copy
	exit 0
elif $type && ! $multi; then
	if $x11; then
		printf "%s" "$(pass "$file")" | xdotool type --clearmodifiers --file -
	else
		printf "%s" "$(pass "$file")" | ydotool type --file -
	fi
	exit 0
fi

password_lines="$(pass "$file")"

if ! $multi; then
	echo "$password_lines"
	exit 0
fi

password="$(echo "$password_lines" | sed '{ h; s/^.$//; s/^..//; s/./*/g; x; s/^\(..\).*/\1/; G; s/\n//; }' | $dmenu)"
# Sed script:
# Copy pattern space (line) to hold space. Pattern space: Foo Hold space: Foo
# If the patter space is a single character, delete the character (prevents "a" to be outputted as "aa")
# Delete the first two characters of the patter space. Pattern Space: o; Hold space: Foo
# Replace all the characters in the pattern space with the literal "*". Pattern Space: *; Hold space: Foo
# Swap pattern space with hold space. Pattern Space: Foo Hold space: *
# Match the first two characters of the pattern space, then all the rest of the characters
# substitute with the whole match (entire line) with the first submatch (first 2 characters). Pattern Space: Fo Hold Space: *
# Append newline followed by the Hold Space to the Pattern Space. Pattern Space: Fo\n* Hold Space: *
# Remove the (supposedly only) newline from the pattern space. Pattern Space: Fo* Hold Space: *
# Sed automatically prints the pattern space at the end of a script (unless the -n option is given). Output: Fo*

password="$(echo "$password_lines" | grep -xE "$(echo "$password" | sed 'y/*/./' )")"

if "$clipboard"; then
	printf "%s" "$password" | cb copy
	exit 0
elif "$type"; then
	if $x11; then
		printf "%s" "$password" | xdotool type --clearmodifiers --file -
	else
		printf "%s" "$password" | ydotool type --file -
	fi
	exit 0
fi

echo "$password"