From 43f05b0c93cca06e26482f32b1f18f901f3d621b Mon Sep 17 00:00:00 2001
From: yosh <yosh-git@riseup.net>
Date: Thu, 4 May 2023 19:45:28 -0400
Subject: [PATCH] hehe

---
 README.md | 35 ++++++++++++++++++++++++++++++++++-
 agetar    | 45 ++++++++++++++++++++++++++++++++-------------
 2 files changed, 66 insertions(+), 14 deletions(-)

diff --git a/README.md b/README.md
index c84e67f..32e7315 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,35 @@
 # agetar
-actual description and development pending... I am lazy
+`agetar` is a simple wrapper around `tar` and `age` to easily pack files into an encrypted tar archive or extract files from an encrypted tar archive.
+
+## dependencies
+- a posix-compliant shell
+- either `bsdtar` or `tar` (`bsdtar` takes priority)
+- [age](https://github.com/FiloSottile/age)
+
+# usage
+```
+usage:
+    agetar -e (-r RECIPIENT | -R PATH)... [-a] [-o OUTPUT] [--] FILES...
+    agetar -e -p [-a] [-o OUTPUT] [--] FILES...
+    agetar -d [-i PATH]... [-o OUTPUT] [--] FILES...
+
+options:
+    -e            encrypt the input files to an output tar
+    -d            decrypt the input tar to output files
+    -o OUTPUT     encrypting: write output tar to OUTPUT. stdout if omitted
+                  decrypting: directory to extract to. PWD if omitted
+    -a            encrypt to a PEM encoded format
+    -p            encrypt with a passphrase
+    -r RECIPIENT  encrypt to the specified RECIPIENT. can be repeated
+    -R PATH       encrypt to the recipients listed at PATH. can be repeated
+    -i PATH       decrypt using the identity file at PATH. can be repeated
+
+at least one FILE is required for both encrypting and decrypting
+if multiple are present, each will be processed with the same identities
+
+you probably want an OUTPUT when encrypting, even if it's not required
+(age will yet at you for that anyway unless you also use -a)
+
+most of these options are passed directly to age(1). see its man page for
+more details.
+```
diff --git a/agetar b/agetar
index 606075c..2308ed7 100755
--- a/agetar
+++ b/agetar
@@ -1,17 +1,13 @@
 #!/bin/sh
 
-# I can't believe I'm making this
-
-RED="$(tput setaf 9)" || RED="$(tput setf 4)"
-GREEN="$(tput setaf 10)" || GREEN="$(tput setf 2)"
-YELLOW="$(tput setaf 11)" || YELLOW="$(tput setf 6)"
-RESET="$(tput sgr0)"
+RED="$(printf '\033[38;5;9m')"
+RESET="$(printf '\033[m')"
 set -euf
 BN="${0##*/}"
 export POSIXLY_CORRECT=1
 
 if [ "${NO_COLOR:-}" ]; then
-	RED="" GREEN="" YELLOW="" RESET=""
+	RED="" RESET=""
 fi
 
 errecho() {
@@ -22,11 +18,34 @@ fail() {
 	errecho "${RED}error: $BN: $RESET$*"
 	exit 1
 }
+_type() { type >/dev/null 2>&1 ; }
 
 usage() {
 	cat >&2 <<-EOF
 		usage:
-		    $BN 
+		    $BN -e (-r RECIPIENT | -R PATH)... [-a] [-o OUTPUT] [--] FILES...
+		    $BN -e -p [-a] [-o OUTPUT] [--] FILES...
+		    $BN -d [-i PATH]... [-o OUTPUT] [--] FILES...
+
+		options:
+		    -e            encrypt the input files to an output tar
+		    -d            decrypt the input tar to output files
+		    -o OUTPUT     encrypting: write output tar to OUTPUT. stdout if omitted
+		                  decrypting: directory to extract to. PWD if omitted
+		    -a            encrypt to a PEM encoded format
+		    -p            encrypt with a passphrase
+		    -r RECIPIENT  encrypt to the specified RECIPIENT. can be repeated
+		    -R PATH       encrypt to the recipients listed at PATH. can be repeated
+		    -i PATH       decrypt using the identity file at PATH. can be repeated
+
+		at least one FILE is required for both encrypting and decrypting
+		if multiple are present, each will be processed with the same identities
+
+		you probably want an OUTPUT when encrypting, even if it's not required
+		(age will yet at you for that anyway unless you also use -a)
+
+		most of these options are passed directly to age(1). see its man page for
+		more details.
 	EOF
 }
 
@@ -56,8 +75,8 @@ shift $((OPTIND - 1))
 TAR="$(mktemp)"
 trap 'rm "$TAR"' INT HUP QUIT EXIT
 if [ "$TYPE" = "e" ]; then
-	{ type bsdtar && CMD="bsdtar -rL -f"; } || \
-		{ type tar && CMD="tar -rh -f"; } || \
+	{ _type bsdtar && CMD="bsdtar -rL -f"; } || \
+		{ _type tar && CMD="tar -rh -f"; } || \
 		fail "can't find tar command!"
 	for f; do
 		if [ -f "$f" ] || [ -d "$f" ]; then
@@ -68,12 +87,12 @@ if [ "$TYPE" = "e" ]; then
 	done
 	eval 'age $AGEOPTS ${OUTPUT:+-o "$OUTPUT"} '"$RECIPIENTS $RECIPIENTS_FILES $IDENTITIES"' "$TAR"'
 else
-	{ type bsdtar && CMD="bsdtar -x -f"; } || \
-		{ type tar && CMD="tar -x -f"; } || \
+	{ _type bsdtar && CMD="bsdtar -x -f"; } || \
+		{ _type tar && CMD="tar -x -f"; } || \
 		fail "can't find tar command!"
 	for f; do
 		eval 'age $AGEOPTS -o "$TAR" '"$RECIPIENTS $RECIPIENTS_FILES $IDENTITIES"' "$f"'
-		[ ! -d "${OUTPUT:=$PWD}" ] && mkdir -p "$OUTPUT"
+		[ ! -d "${OUTPUT:="$PWD"}" ] && mkdir -p "$OUTPUT"
 		$CMD "$TAR" -C "$OUTPUT"
 	done
 fi