Switched test/merge_debian_isos to /bin/sh, added signal handling, fixed harmless flaws found by shellcheck, added more sanity checks, enabled XORRISO=dummy for test runs without ISO production
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65c63cc1cf
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@ -1,4 +1,4 @@
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#!/bin/bash
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#!/bin/sh
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# Copyright 2022 Thomas Schmitt <scdbackup@gmx.net> , libburnia project.
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# Provided under BSD license: Use, modify, and distribute as you like.
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@ -22,9 +22,9 @@ usage() {
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echo "Further it creates and finally removes directories mount_template*" >&2
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echo "if they are needed and do not exist when the script starts." >&2
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echo "It depends on the following programs:" >&2
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echo " awk, basename, bash, cat, chmod, cp, dirname, expr, fgrep, grep," >&2
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echo " gunzip, gzip, head, ls, mkdir, mount, mv, rm, rmdir, sha256sum," >&2
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echo " sed, sort, stat, sudo, umount, xorriso" >&2
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echo " awk, basename, cat, chmod, cp, dirname, expr, fgrep, grep," >&2
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echo " gunzip, gzip, head, ls, mkdir, mount, mv, rm, rmdir, sed, sh," >&2
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echo " sha256sum, sort, stat, sudo, umount, xorriso" >&2
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echo "Recommended are: md5sum, sha1sum, sha512sum" >&2
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echo >&2
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echo "Exported non-empty variable MERGE_DATE enforces a particular" >&2
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@ -34,9 +34,10 @@ usage() {
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echo "such directory is found and thus no need to set MERGE_FOR_DIST." >&2
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echo "Exported non-empty variable XORRISO overrides command xorriso." >&2
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echo "This may be needed if installed xorriso is older than 1.4.2." >&2
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echo 'If XORRISO is set to "dummy" then no new ISO will emerge.' >&2
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echo >&2
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echo "Example using GNU xorriso-1.5.4 instead of /usr/bin/xorriso:" >&2
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echo " export XORRISO="'$HOME'"/xorriso-1.5.4/xorriso/xorriso" >&2
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echo " export XORRISO="'"$HOME"'"/xorriso-1.5.4/xorriso/xorriso" >&2
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echo " mkdir merge_mount" >&2
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echo " $(basename "$0") merged.iso merge_mount/iso "'\' >&2
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echo " debian-11.2.0-amd64-DVD-[12345].iso" >&2
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@ -51,15 +52,28 @@ check_single_word() {
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then
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empty=0
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else
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echo "--- Argument $2 is not a single word:" >&2
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echo "--- '${1}'" >&2
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if test "$2" = "dists"
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then
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echo "WARNING: A file name in /dists is not a single word:" >&2
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echo " '${1}'" >&2
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else
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echo "--- Argument $2 is not a single word:" >&2
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echo "--- '${1}'" >&2
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fi
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return 1
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fi
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done
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if test "$empty" = 1
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then
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echo "--- Argument $2 is empty or entirely white space:" >&2
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echo "--- '${1}'" >&2
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if test "$2" = "dists"
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then
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echo "WARNING: A file name in /dists is empty or entirely white space:" \
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>&2
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echo " '${1}'" >&2
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else
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echo "--- Argument $2 is empty or entirely white space:" >&2
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echo "--- '${1}'" >&2
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fi
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return 1
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fi
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return 0
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@ -70,10 +84,34 @@ UMOUNT_LIST=
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RMDIR_LIST=
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TEMPFILE_LIST="merged_dists merged_md5sum.txt merged_README.txt temp_file"
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finish_cleanup() {
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if test -n "$1"
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then
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echo >&2
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if test "$1" -gt 0
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then
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echo "--- Merge run aborted !" >&2
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else
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echo "Merge run ended with success indication." >&2
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fi
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exit "$1"
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fi
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return 0
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}
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# Cleanup temporary files, mount points and made directories
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cleanup_ran=0
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cleanup_and_end() {
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# Remove trap
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trap EXIT
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trap - INT TERM QUIT EXIT
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if test "$cleanup_ran" = 1
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then
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finish_cleanup "$1"
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return 0
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fi
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cleanup_ran=1
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echo >&2
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echo "Cleaning up temporary files and mount points ..." 2>&1
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@ -122,26 +160,18 @@ cleanup_and_end() {
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echo "--- Cleanup could not be fully completed." >&2
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fi
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if test -n "$1"
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then
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echo >&2
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if test "$1" -gt 0
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then
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echo "--- Merge run aborted !" >&2
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else
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echo "Merge run ended with success indication." >&2
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fi
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exit "$1"
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fi
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# Might exit
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finish_cleanup "$1"
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return $ret
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}
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## Check arguments
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# +++ No cleanup_and_end before TEMPFILE_LIST is verified to be missing +++
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## Check arguments and dependencies
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if test "$#" -lt 4
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then
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usage
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@ -151,6 +181,53 @@ fi
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echo >&2
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echo "$(basename "$0") starting with $(expr $# - 2) ISO image files ..." >&2
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dep="awk basename cat chmod cp dirname expr fgrep grep"
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dep="$dep gunzip gzip head ls mkdir mount mv rm rmdir sed"
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dep="$dep sha256sum sort stat sudo umount"
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missing=0
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for i in $dep
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do
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if type "$i" >/dev/null 2>&1
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then
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dummy=dummy
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else
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echo "--- Missing a helper program: $i" 2>&1
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missing=1
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fi
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done
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if test -z "$XORRISO"
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then
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XORRISO=xorriso
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fi
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if test "$XORRISO" = dummy
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then
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echo 'NOTE: Variable XORRISO is set to "dummy".' >&2
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echo ' Will not perform xorriso run but only show its arguments.' >&2
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elif "$XORRISO" -no_rc -version >/dev/null 2>&1
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then
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if "$XORRISO" -no_rc -help 2>/dev/null | fgrep '"replay"' >/dev/null 2>&1
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then
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dummy=dummy
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else
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echo '--- Help text of xorriso program '"$XORRISO"' lacks word "replay".' \
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2>&1
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echo "--- It will fail when trying to make the new ISO bootable." 2>&1
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echo " Consider to get and compile GNU xorriso from" 2>&1
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echo " https://www.gnu.org/software/xorriso" 2>&1
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echo " and to export variable XORRISO with the binary's path." 2>&1
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echo >&2
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missing=1
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fi
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else
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echo "--- Test run of xorriso program failed: $XORRISO -no_rc -version" 2>&1
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missing=1
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fi
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if test "$missing" = 1
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then
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echo "--- Merge run aborted !" >&2
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exit 5
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fi
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existing_tempfiles=
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for i in $TEMPFILE_LIST
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do
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@ -169,7 +246,7 @@ then
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fi
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# +++ From here on: Always call cleanup_and_end to perform exit +++
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trap cleanup_and_end EXIT
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trap cleanup_and_end INT TERM QUIT EXIT
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RESULT_ISO="$1"
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check_single_word "$2" "result_iso" || cleanup_and_end 1
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@ -342,7 +419,7 @@ extract_checksum_paths() {
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cat "$1" | \
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while true
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do
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read x || break
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read -r x || break
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if test "$x" = "MD5Sum:" || test "$x" = "SHA1:" \
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|| test "$x" = "SHA256:" || test "$x" = "SHA512:"
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then
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@ -365,7 +442,7 @@ extract_release_head() {
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cat "$1" | \
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while true
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do
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read x || break
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read -r x || break
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if test "$x" = "MD5Sum:" || test "$x" = "SHA1:" \
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|| test "$x" = "SHA256:" || test "$x" = "SHA512:"
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then
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@ -381,8 +458,14 @@ echo >&2
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echo "Determining Debian release in first ISO ..." >&2
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dist=
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for i in $(ls -1d "$mount_point_1"/dists/*)
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for i in "$mount_point_1"/dists/*
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do
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if check_single_word "$i" "dists"
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then
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dummy=dummy
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else
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continue
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fi
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if test -d "$i"
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then
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if test -L "$i"
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@ -390,7 +473,7 @@ do
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continue
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fi
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test -n "$dist" && dist="$dist "
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dist="${dist}$(basename $i)"
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dist="${dist}$(basename "$i")"
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fi
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done
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if test -z "$dist"
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@ -446,7 +529,7 @@ then
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MERGE_DATE=$(date +'%Y%m%d-%H:%M')
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fi
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printf 'Result of a run of %s at %s\r\n' \
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"$(basename $0)" "$MERGE_DATE" >temp_file
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"$(basename "$0")" "$MERGE_DATE" >temp_file
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printf 'Package pools and Packages lists were merged.\r\n' >>temp_file
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printf 'The other files stem from the first input ISO.\r\n' >>temp_file
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printf '\r\n' >>temp_file
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@ -564,7 +647,7 @@ do
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continue
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fi
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list_path=$(echo "$file" | sed -e 's/^merged_dists\/'"$dist"'\///')
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printf ' %s %8ld %s\n' "$sum" "$size" "$list_path"
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printf ' %s %8d %s\n' "$sum" "$size" "$list_path"
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done
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fi
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done >>temp_file
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@ -582,7 +665,6 @@ for mount_point in $MOUNT_LIST
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do
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if test "$mount_point" = "$mount_point_1"
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then
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dummy=dummy
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echo "Planned as imported package pool : ${mount_point}/pool" >&2
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else
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echo "Planned for merging into package pool: ${mount_point}/pool" >&2
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@ -590,17 +672,14 @@ do
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fi
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done
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if test -z "$XORRISO"
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if test "$XORRISO" = dummy
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then
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XORRISO=xorriso
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fi
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x=$(type -p "$XORRISO")
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if test -z "$x"
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then
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echo "Running as xorriso program: $XORRISO" >&2
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echo >&2
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echo 'NOTE: Variable XORRISO is set to "dummy".' >&2
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echo ' Will not perform xorriso run but only show its arguments:' >&2
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XORRISO=echo
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else
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echo "Running as xorriso program: $x" >&2
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echo "Running as xorriso program: $XORRISO" >&2
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fi
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echo >&2
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@ -621,9 +700,10 @@ if "$XORRISO" \
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-padding included \
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-compliance no_emul_toc
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then
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echo "Run of xorriso program completed without error indication." >&2
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test "$XORRISO" = echo || \
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echo "Run of xorriso program ended without error indication." >&2
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else
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echo "--- Run of xorriso program ended with problem indication." >&2
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echo "--- Run of xorriso program ended with error indication." >&2
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cleanup_and_end 4
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fi
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