various changes over time

1 files changed, 110 insertions, 0 deletions

diff --git a/misc/verifoo b/misc/verifoo
new file mode 100755
index 0000000..34089cb
--- /dev/null
+++ b/misc/verifoo
@@ -0,0 +1,110 @@
+#!/bin/sh
+
+help() {
+cat << HELPDOC
+usage: $(basename "$0") [options] [file]...
+
+OPTIONS:
+  -h, --help                show this menu
+  -c, --check               read and verify checksums from file
+  -r, --recursive           produce a checksum for all files in a directory recursively
+  --recursive-sum           produce a checksum for a directory. sensitive to filenames
+  --recursive-sum-nopath    produce a checksum for a directory. not sensitive to filenames/placement
+  -s, --silent              produce no output to stderr
+  -v, --verbose             output a progress bar of hash progress if pv is avaliable (wip)
+
+MODES:
+  -S, --sha                 use sha1sum for checksums
+  -M, --md5                 use md5sum for checksums
+  -X, --xxh                 use xxhsum for checksums (default if avaliable with sha1sum as fallback)
+HELPDOC
+}
+
+# set defaults
+cat="pv -F'%r_[%b]_[%t]_[%e]_%p'"
+! command -v pv >/dev/null && cat=cat
+
+hash=xxhsum
+! command -v xxhsum >/dev/null && hash=sha1sum
+
+hashfiles=""
+verbose=1
+recursive=""
+outputfile=""
+
+while true; do
+	case "$1" in
+		-c|--check) [ -n "$2" ] && hashfiles="$hashfiles $2" && shift ;;
+		-s|--silent)  verbose=0 ;;
+		-v|--verbose) verbose=2 ;;
+		--recursive|-r)         recursive=3 ;;
+		--recursive-sum)        recursive=2 ;;
+		--recursive-sum-nopath) recursive=1 ;;
+		-S|--sha) hash=sha1sum ;;
+		-M|--md5) hash=md5sum  ;;
+		-X|--xxh) hash=xxhsum  ;;
+		-h|--help) help; exit 0 ;;
+		-*)        help; exit 1 ;;
+		*) break ;;
+	esac
+	shift
+done
+
+case $verbose in
+	0) cat=cat ;;
+	1) cat=cat ;;
+esac
+
+# run hash
+while [ -n "$1" ]; do
+	if [ -d "$1" ]; then # is directory
+		# check if using -r flag
+		case "$recursive" in
+			1)
+				# get hash of all files, sort hashes, hash hashes
+				# TODO make pv work in this mode
+
+				#catd="$cat"
+				#if [ $verbose -ge 2 ] && [ "$catd" != "cat" ]; then
+				#	total_files=$(du -a "$1" | wc -l)
+				#	catd="pv -l -s$total_files -F'[%b/$total_files]_[%t]_[%e]_%p'"
+				#fi
+				#sum=`find "$1" -type f -print0 | xargs -r0 $hash | $catd | cut -d' ' -f1 | sort | $hash | cut -d' ' -f1` 2>/dev/null
+				sum=`find "$1" -type f -print0 | xargs -r0 $hash | cut -d' ' -f1 | sort | $hash | cut -d' ' -f1` 2>/dev/null
+				echo "r/$sum  $1"
+			;;
+			2)
+				# hash sorted filenames
+				# sort all filenames w/ full path and hash
+				# hash those sums together
+				# `tar -c -f - "$1" | $hash` is a good idea but it doesn't work since changes to the fs affect tar
+				filehash=`find "$1" -type f -print0 | sort -z | xargs -r0 $cat | $hash | cut -d' ' -f1`
+				pathhash=`find "$1" -printf "%P\0" | sort -z | $hash | cut -d' ' -f1`
+				sum=`printf "$filehash$pathhash" | $hash | cut -d' ' -f1`
+				echo "p/$sum  $1"
+			;;
+			3)
+				# sort files and hash each one in sequence
+				# TODO make pv work in this mode
+				find "$1" -type f -print0 | sort -z | xargs -r0 $hash
+			;;
+			*)
+				[ $verbose -ge 1 ] && echo "-r not specified for directory $1. Exiting"
+				exit 1
+			;;
+		esac
+	else # is file
+		if ! [ -f "$1" ]; then
+			[ $verbose -gt 1 ] && echo "File $1 does not exist. Exiting"
+			exit 1
+		fi
+		files="$1"
+
+		while [ -f "$2" ]; do
+			files="$files\0$2"
+			shift
+		done
+		printf "$files" | xargs -r0 $hash
+	fi
+	shift
+done