1 files changed, 60 insertions, 0 deletions
diff --git a/misc/verify b/misc/verify
new file mode 100755
index 0000000..0d17085
--- /dev/null
+++ b/misc/verify
@@ -0,0 +1,60 @@
+#!/bin/sh
+NORM="\033[0m"
+CYN="\033[0;36m"
+GRN="\033[0;32m"
+RED="\033[0;31m"
+printhelp() {
+echo "\
+Usage: $(basename "$0") [options] [file/directory]...
+
+OPTIONS:
+  -m, --md5                Create/verify md5 checksum
+  -s[alg], --sha[alg]      Create/verify sha checksum
+  -x[alg], --xxh[alg]      Create/verify xxh checksum
+  -c [alg], --crypt [alg]  Create/verify [alg] checksum (uses [alg]sum)
+  -v, --verify             Verify files with existing checksums
+  -h, --help               Print help \
+";
+}
+crypt=xxh
+while true; do
+	case "$1" in
+		-m|--md5)	crypt=md5 ;;
+		-s*|--sha*)	crypt=sha$(echo "$1" | tr -cd [:digit:]) ;;
+		-x*|--xxh*)	crypt=xxh$(echo "$1" | tr -cd [:digit:]) ;;
+		-c|--crypt)	crypt=$2 && shift ;; # Shift twice
+		-v|--verify)	verify=1 ;;
+		-h|--help)	printhelp; exit 0 ;;
+		-*)		printhelp; exit 2 ;;
+		*)		break ;;
+	esac
+	shift
+done
+hashalg=${crypt}sum # Works for current algs
+command -v $hashalg >/dev/null || (echo "Hashing algorithm '$hashalg' does not exist!" && exit 2)
+
+while [ -n "$1" ]; do
+	file="$1"
+	[ ! "`echo "$file" | sed "s/.$crypt$//"`" = "$file" ] && shift && continue # Skip hash files
+	[ ! -e "$file" ] && echo "file '$file' does not exist!" && exit 1
+	[ -d "$file" ] && type=directory || type=file
+	hashfile="$file.$crypt"
+	[ -n "$verify" ] && [ ! -e "$hashfile" ] && shift && continue # Skip files without a hash in verify mode
+
+	echo "Getting $crypt checksum of $type '$file'..."
+	hash=`find "$file" -type f -print0 | sort -z | xargs -r0 pv -EE -F'%r [%b] [%t] [%e] %p' | $hashalg | cut -d' ' -f1`
+
+	if [ -e "$hashfile" ]; then
+		phash=`cat "$hashfile"`
+		[ $phash = $hash ] \
+			&& echo "${GRN}Success: $type matches saved checksum!" \
+			|| (echo "${RED}Error: $type does not match saved checksum!\nExpected checksum: $phash\nActual checksum: $hash" && ec=1)
+	else
+		echo $hash > "$hashfile" \
+			&& echo "${CYN}$crypt checksum file saved at '$hashfile'!" \
+			|| (echo "${RED}'$hashfile' could not be created!\n$crypt checksum of $type '$file' is $hash" && ec=1)
+	fi
+	printf "$NORM"; [ -n "$2" ] && echo
+	shift
+done
+exit $ec