Added doasedit script to repo

1 files changed, 47 insertions, 0 deletions

diff --git a/.local/bin/doasedit b/.local/bin/doasedit
new file mode 100755
index 0000000..0d2c9c9
--- /dev/null
+++ b/.local/bin/doasedit
@@ -0,0 +1,47 @@
+#!/bin/sh -e
+
+help() {
+	cat - >&2 <<EOF
+doasedit - like sudoedit, but for doas
+
+doasedit file...
+
+Every argument will be treated as a file to edit. There's no support for
+passing arguments to doas, so you can only doas root.
+
+This script is SECURITY SENSITIVE! Special care has been taken to correctly
+preserve file attributes. Please exercise CAUTION when modifying AND using
+this script.
+EOF
+}
+
+case "$1" in --help|-h) help; exit 0;; esac
+
+export TMPDIR=/dev/shm/
+trap 'trap - EXIT HUP QUIT TERM INT ABRT; rm -f "$tmp" "$tmpcopy"' EXIT HUP QUIT TERM INT ABRT
+
+for file; do
+	case "$file" in -*) file=./"$file" ;; esac
+
+	tmp="$(mktemp)"
+	if [ -f "$file" ] && [ ! -r "$file" ]; then
+		doas cat "$file" > "$tmp"
+	elif [ -r "$file" ]; then
+		cat "$file" > "$tmp"
+	fi
+
+	tmpcopy="$(mktemp)"
+	cat "$tmp" > "$tmpcopy"
+
+	${EDITOR:-vi} "$tmp"
+
+	if cmp -s "$tmp" "$tmpcopy"; then
+		echo 'File unchanged, exiting...'
+	else
+		doas dd if="$tmp" of="$file"
+		echo 'Done, changes written'
+	fi
+
+	rm "$tmp" "$tmpcopy"
+done
+