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#!/bin/sh |
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# Copyright (c) 2010, 2011 George Danchev <danchev@spnet.net> |
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# Copyright (c) 2010, 2011 Thomas Schmitt <scdbackup@gmx.net> |
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# Copyright (c) 2010, 2011, 2019 Thomas Schmitt <scdbackup@gmx.net> |
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# This script is distributed according to the terms of the GNU GPL v2. |
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# This should be better rewritten in C at some future point. Ref: pwd code. |
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# Create a list of MD5sums encoded in hexadecimal format and print to standard output |
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# Create a list of checksums encoded in hexadecimal format and print to |
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# standard output. Checksum may be MD5 or SHA256. |
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# Format Description |
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# A line in the emerging file is to be composed as follows: |
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# |
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# The MD5 checksum of the file content must be encoded in 32 hex digits |
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# The checksum of the file content must be encoded in the aprropriate number |
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# of hex digits. |
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# [0-9afAF] |
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# |
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# Next come two blanks. |
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@ -37,35 +39,61 @@
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# text, like "Debian:". |
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# A simple strategy to cope with this is to write absolute paths into the |
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# .md5 file, and to use matching absolute paths in the -jigdo-map |
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# checksum file, and to use matching absolute paths in the -jigdo-map |
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# directives. Keep in mind that mapping is purely literal. Symbolic links |
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# are neither resolved nor can they confuse the mapping. |
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set -e |
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SELF=jigdo-gen-md5-list |
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VER=0.2 |
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VER=0.3 |
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OPT_ABSOLUTE=1 |
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# The checksum type to produce: md5 , sha256 |
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checksum_type=md5 |
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hex_length=32 |
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md5_cmd= |
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# On FreeBSD there is "md5" rather than "md5sum". |
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# Furthermore, the FreeBSD shell reports missing commands to inherited stderr, |
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# regardless that the attempt itself has redirected stderr. Thus a sub shell |
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# is needed to hide the protest. |
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if ( md5sum --help ) >/dev/null 2>&1 |
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then |
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md5_cmd=md5sum |
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elif ( md5 -s test ) >/dev/null 2>&1 |
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then |
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md5_cmd=md5 |
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else |
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echo "$0 : Programs md5sum and md5 failed to work" >&2 |
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exit 2 |
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fi |
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choose_checksum_cmd() { |
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if test "$checksum_type" = "md5" |
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then |
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if ( md5sum --help ) >/dev/null 2>&1 |
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then |
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md5_cmd=md5sum |
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elif ( md5 -s test ) >/dev/null 2>&1 |
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then |
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md5_cmd=md5 |
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else |
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echo "$0 : Programs md5sum and md5 failed to work" >&2 |
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exit 2 |
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fi |
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elif test "$checksum_type" = "sha256" |
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then |
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if ( sha256sum --help ) >/dev/null 2>&1 |
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then |
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md5_cmd=sha256sum |
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elif ( sha256 -s test ) >/dev/null 2>&1 |
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then |
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md5_cmd=sha256 |
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else |
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echo "$0 : Programs sha256sum and sha256 failed to work" >&2 |
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exit 2 |
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fi |
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fi |
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} |
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usage() { |
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cat << USAGE |
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usage: $SELF [option] DIR FILE ... |
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Print a Jigdo checksum file to stdout. One line per FILE and per file in DIR. |
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-m, --md5 produce MD5 checksums (default) |
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-s, --sha256 produce SHA256 checksums |
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-a, --make-absolute make absolute paths, avoiding any symlinks (default) |
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-l, --keep-literal leave paths untouched, literally as supplied |
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-v, --version print version |
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@ -100,12 +128,18 @@ md5list() {
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elif test "$md5_cmd" = "md5" |
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then |
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MD5=`md5 -q "$item"` |
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elif test "$md5_cmd" = "sha256sum" |
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then |
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MD5=`sha256sum "$item" | awk '{print $1}'` |
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elif test "$md5_cmd" = "sha256" |
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then |
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MD5=`sha256 -q "$item"` |
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else |
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echo "$0 : No MD5 program found" >&2 |
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echo "$0 : Internal error : Checksum mode unknown : $md5_cmd" >&2 |
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exit 2 |
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fi |
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SIZ=`ls -ld "$item" | awk '{print $5}'` |
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printf '%32s %12s %s\n' "$MD5" "$SIZ" "$item" |
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printf '%'"$hex_length"'s %12s %s\n' "$MD5" "$SIZ" "$item" |
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} |
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walkdir() { |
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@ -123,7 +157,17 @@ if test "$1" = "" ; then
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exit 1 |
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fi |
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case "$1" in |
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for i in "$@" |
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do |
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case "$i" in |
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--md5|-m) |
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checksum_type=md5 |
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hex_length=32 |
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;; |
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--sha256|-s) |
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checksum_type=sha256 |
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hex_length=64 |
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;; |
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--make-absolute|-a) |
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OPT_ABSOLUTE=1; |
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shift; |
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@ -147,12 +191,15 @@ case "$1" in
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# usage |
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# exit 1 |
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# ;; |
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esac |
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esac |
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done |
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choose_checksum_cmd |
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for i in "$@" |
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do |
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if test -d "$i" ; then |
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if echo "$i" | grep '^-' >/dev/null ; then |
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dummy=dummy |
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elif test -d "$i" ; then |
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DR="$i" |
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if test $OPT_ABSOLUTE -eq 1; then |
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od=`pwd -P` # old dir |
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