j-hpn-ssh/install-sh

#!/usr/bin/env sh
# install - install a program, script, or datafile

scriptversion=2020-11-14.01  # UTC

# This originates from X11R5 (mit/util/scripts/install.sh), which was
# later released in X11R6 (xc/config/util/install.sh) with the
# following copyright and license.
#
# Copyright (C) 1994 X Consortium
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
# Except as contained in this notice, the name of the X Consortium shall not
# be used in advertising or otherwise to promote the sale, use or other deal-
# ings in this Software without prior written authorization from the X Consor-
# tium.
#
#
# FSF changes to this file are in the public domain.
#
# Calling this script install-sh is preferred over install.sh, to prevent
# 'make' implicit rules from creating a file called install from it
# when there is no Makefile.
#
# This script is compatible with the BSD install script, but was written
# from scratch.

tab='	'
nl='
'
IFS=" $tab$nl"

# Set DOITPROG to "echo" to test this script.

doit=${DOITPROG-}
doit_exec=${doit:-exec}

# Put in absolute file names if you don't have them in your path;
# or use environment vars.

chgrpprog=${CHGRPPROG-chgrp}
chmodprog=${CHMODPROG-chmod}
chownprog=${CHOWNPROG-chown}
cmpprog=${CMPPROG-cmp}
cpprog=${CPPROG-cp}
mkdirprog=${MKDIRPROG-mkdir}
mvprog=${MVPROG-mv}
rmprog=${RMPROG-rm}
stripprog=${STRIPPROG-strip}

posix_mkdir=

# Desired mode of installed file.
mode=0755

# Create dirs (including intermediate dirs) using mode 755.
# This is like GNU 'install' as of coreutils 8.32 (2020).
mkdir_umask=22

backupsuffix=
chgrpcmd=
chmodcmd=$chmodprog
chowncmd=
mvcmd=$mvprog
rmcmd="$rmprog -f"
stripcmd=

src=
dst=
dir_arg=
dst_arg=

copy_on_change=false
is_target_a_directory=possibly

usage="\
Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
   or: $0 [OPTION]... SRCFILES... DIRECTORY
   or: $0 [OPTION]... -t DIRECTORY SRCFILES...
   or: $0 [OPTION]... -d DIRECTORIES...

In the 1st form, copy SRCFILE to DSTFILE.
In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
In the 4th, create DIRECTORIES.

Options:
     --help     display this help and exit.
     --version  display version info and exit.

  -c            (ignored)
  -C            install only if different (preserve data modification time)
  -d            create directories instead of installing files.
  -g GROUP      $chgrpprog installed files to GROUP.
  -m MODE       $chmodprog installed files to MODE.
  -o USER       $chownprog installed files to USER.
  -p            pass -p to $cpprog.
  -s            $stripprog installed files.
  -S SUFFIX     attempt to back up existing files, with suffix SUFFIX.
  -t DIRECTORY  install into DIRECTORY.
  -T            report an error if DSTFILE is a directory.

Environment variables override the default commands:
  CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
  RMPROG STRIPPROG

By default, rm is invoked with -f; when overridden with RMPROG,
it's up to you to specify -f if you want it.

If -S is not specified, no backups are attempted.

Email bug reports to bug-automake@gnu.org.
Automake home page: https://www.gnu.org/software/automake/
"

while test $# -ne 0; do
	case $1 in
		-c) ;;

		-C) copy_on_change=true ;;

		-d) dir_arg=true ;;

		-g)
			chgrpcmd="$chgrpprog $2"
			shift
			;;

		--help)
			echo        "$usage"
			exit                       $?
			;;

		-m)
			mode=$2
			case $mode in
				*' '* |     *"$tab"* | *"$nl"* | *'*'* | *'?'* | *'['*)
					echo      "$0: invalid mode: $mode" >&2
					exit      1
					;;
			esac
			shift
			;;

		-o)
			chowncmd="$chownprog $2"
			shift
			;;

		-p) cpprog="$cpprog -p" ;;

		-s) stripcmd=$stripprog ;;

		-S)
			backupsuffix="$2"
			shift
			;;

		-t)
			is_target_a_directory=always
			dst_arg=$2
			# Protect names problematic for 'test' and other utilities.
			case $dst_arg in
				-* |     [=\(\)!]) dst_arg=./$dst_arg ;;
			esac
			shift
			;;

		-T) is_target_a_directory=never ;;

		--version)
			echo           "$0 $scriptversion"
			exit                                     $?
			;;

		--)
			shift
			break
			;;

		-*)
			echo    "$0: invalid option: $1" >&2
			exit    1
			;;

		*)  break ;;
	esac
	shift
done

# We allow the use of options -d and -T together, by making -d
# take the precedence; this is for compatibility with GNU install.

if test -n "$dir_arg"; then
	if test -n "$dst_arg"; then
		echo "$0: target directory not allowed when installing a directory." >&2
		exit 1
	fi
fi

if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
	# When -d is used, all remaining arguments are directories to create.
	# When -t is used, the destination is already specified.
	# Otherwise, the last argument is the destination.  Remove it from $@.
	for arg; do
		if test -n "$dst_arg"; then
			# $@ is not empty: it contains at least $arg.
			set  fnord "$@" "$dst_arg"
			shift  # fnord
		fi
		shift # arg
		dst_arg=$arg
		# Protect names problematic for 'test' and other utilities.
		case $dst_arg in
			-* |  [=\(\)!]) dst_arg=./$dst_arg ;;
		esac
	done
fi

if test $# -eq 0; then
	if test -z "$dir_arg"; then
		echo "$0: no input file specified." >&2
		exit 1
	fi
	# It's OK to call 'install-sh -d' without argument.
	# This can happen when creating conditional directories.
	exit 0
fi

if test -z "$dir_arg"; then
	if test $# -gt 1 || test "$is_target_a_directory" = always; then
		if test ! -d "$dst_arg"; then
			echo  "$0: $dst_arg: Is not a directory." >&2
			exit  1
		fi
	fi
fi

if test -z "$dir_arg"; then
	do_exit='(exit $ret); exit $ret'
	trap "ret=129; $do_exit" 1
	trap "ret=130; $do_exit" 2
	trap "ret=141; $do_exit" 13
	trap "ret=143; $do_exit" 15

	# Set umask so as not to create temps with too-generous modes.
	# However, 'strip' requires both read and write access to temps.
	case $mode in
		# Optimize common cases.
		*644) cp_umask=133 ;;
		*755) cp_umask=22 ;;

		*[0-7])
			if  test -z "$stripcmd"; then
				u_plus_rw=
			else
				u_plus_rw='% 200'
			fi
			cp_umask=$(expr '(' 777 - $mode % 1000 ')' $u_plus_rw)
			;;
		*)
			if  test -z "$stripcmd"; then
				u_plus_rw=
			else
				u_plus_rw=,u+rw
			fi
			cp_umask=$mode$u_plus_rw
			;;
	esac
fi

for src; do
	# Protect names problematic for 'test' and other utilities.
	case $src in
		-* | [=\(\)!]) src=./$src ;;
	esac

	if test -n "$dir_arg"; then
		dst=$src
		dstdir=$dst
		test -d "$dstdir"
		dstdir_status=$?
		# Don't chown directories that already exist.
		if test $dstdir_status = 0; then
			chowncmd=""
		fi
	else

		# Waiting for this to be detected by the "$cpprog $src $dsttmp" command
		# might cause directories to be created, which would be especially bad
		# if $src (and thus $dsttmp) contains '*'.
		if test ! -f "$src" && test ! -d "$src"; then
			echo  "$0: $src does not exist." >&2
			exit  1
		fi

		if test -z "$dst_arg"; then
			echo  "$0: no destination specified." >&2
			exit  1
		fi
		dst=$dst_arg

		# If destination is a directory, append the input filename.
		if test -d "$dst"; then
			if  test "$is_target_a_directory" = never; then
				echo   "$0: $dst_arg: Is a directory" >&2
				exit   1
			fi
			dstdir=$dst
			dstbase=$(basename "$src")
			case $dst in
				*/) dst=$dst$dstbase ;;
				*) dst=$dst/$dstbase ;;
			esac
			dstdir_status=0
		else
			dstdir=$(dirname "$dst")
			test  -d "$dstdir"
			dstdir_status=$?
		fi
	fi

	case $dstdir in
		*/) dstdirslash=$dstdir ;;
		*)  dstdirslash=$dstdir/ ;;
	esac

	obsolete_mkdir_used=false

	if test $dstdir_status != 0; then
		case $posix_mkdir in
			'')
				# With -d, create the new directory with the user-specified mode.
				# Otherwise, rely on $mkdir_umask.
				if   test -n "$dir_arg"; then
					mkdir_mode=-m$mode
				else
					mkdir_mode=
				fi

				posix_mkdir=false
				# The $RANDOM variable is not portable (e.g., dash).  Use it
				# here however when possible just to lower collision chance.
				tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$

				trap '
	  ret=$?
	  rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir" 2>/dev/null
	  exit $ret
	' 0

				# Because "mkdir -p" follows existing symlinks and we likely work
				# directly in world-writeable /tmp, make sure that the '$tmpdir'
				# directory is successfully created first before we actually test
				# 'mkdir -p'.
				if (umask $mkdir_umask &&
					$mkdirprog $mkdir_mode "$tmpdir" &&
					exec $mkdirprog $mkdir_mode -p -- "$tmpdir/a/b") > /dev/null 2>&1; then
					if test -z "$dir_arg" || {
						# Check for POSIX incompatibilities with -m.
						# HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
						# other-writable bit of parent directory when it shouldn't.
						# FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
						test_tmpdir="$tmpdir/a"
						ls_ld_tmpdir=$(ls -ld "$test_tmpdir")
						case $ls_ld_tmpdir in
							d????-?r-*) different_mode=700 ;;
							d????-?--*) different_mode=755 ;;
							*) false ;;
						esac &&
							$mkdirprog -m$different_mode -p -- "$test_tmpdir" && {
							ls_ld_tmpdir_1=$(ls -ld "$test_tmpdir")
							test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
						}
					}; then
						posix_mkdir=:
					fi
					rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir"
				else
					# Remove any dirs left behind by ancient mkdir implementations.
					rmdir ./$mkdir_mode ./-p ./-- "$tmpdir" 2> /dev/null
				fi
				trap '' 0
				;;
		esac

		if
			$posix_mkdir  && (
				umask   $mkdir_umask &&
					$doit_exec  $mkdirprog $mkdir_mode -p -- "$dstdir"
			)
		then
			:
		else

			# mkdir does not conform to POSIX,
			# or it failed possibly due to a race condition.  Create the
			# directory the slow way, step by step, checking for races as we go.

			case $dstdir in
				/*)   prefix='/' ;;
				[-=\(\)!]*)   prefix='./' ;;
				*)    prefix='' ;;
			esac

			oIFS=$IFS
			IFS=/
			set  -f
			set  fnord $dstdir
			shift
			set  +f
			IFS=$oIFS

			prefixes=

			for d; do
				test   X"$d" = X && continue

				prefix=$prefix$d
				if   test -d "$prefix"; then
					prefixes=
				else
					if    $posix_mkdir; then
						(    umask $mkdir_umask &&
							$doit_exec     $mkdirprog $mkdir_mode -p -- "$dstdir") && break
						# Don't fail if two instances are running concurrently.
						test     -d "$prefix" || exit 1
					else
						case $prefix in
							*\'*)      qprefix=$(echo "$prefix" | sed "s/'/'\\\\''/g") ;;
							*)      qprefix=$prefix ;;
						esac
						prefixes="$prefixes '$qprefix'"
					fi
				fi
				prefix=$prefix/
			done

			if  test -n "$prefixes"; then
				# Don't fail if two instances are running concurrently.
				(  umask $mkdir_umask &&
					eval   "\$doit_exec \$mkdirprog $prefixes") ||
					test    -d "$dstdir" || exit 1
				obsolete_mkdir_used=true
			fi
		fi
	fi

	if test -n "$dir_arg"; then
		{
			test  -z "$chowncmd" || $doit $chowncmd "$dst"
		}                                                  &&
			{
				test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"
			}                                                 &&
			{
				test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
					test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"
			}                                                       || exit 1
	else

		# Make a couple of temp file names in the proper directory.
		dsttmp=${dstdirslash}_inst.$$_
		rmtmp=${dstdirslash}_rm.$$_

		# Trap to clean up those temp files at exit.
		trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0

		# Copy the file name to the temp name.
		(umask $cp_umask &&
			{
				test  -z "$stripcmd" || {
					# Create $dsttmp read-write so that cp doesn't create it read-only,
					# which would cause strip to fail.
					if test -z "$doit"; then
						: > "$dsttmp" # No need to fork-exec 'touch'.
					else
						$doit touch "$dsttmp"
					fi
				}
			} &&
			$doit_exec $cpprog "$src" "$dsttmp") &&

			# and set any options; do chmod last to preserve setuid bits.
			#
			# If any of these fail, we abort the whole thing.  If we want to
			# ignore errors from any of these, just make sure not to ignore
			# errors from the above "$doit $cpprog $src $dsttmp" command.
			#
			{
				test -z "$chowncmd" || $doit $chowncmd "$dsttmp"
			}                                                    &&
			{
				test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"
			}                                                    &&
			{
				test -z "$stripcmd" || $doit $stripcmd "$dsttmp"
			}                                                    &&
			{
				test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"
			}                                                          &&

			# If -C, don't bother to copy if it wouldn't change the file.
			if $copy_on_change &&
				old=$(LC_ALL=C ls -dlL "$dst"     2> /dev/null) &&
				new=$(LC_ALL=C ls -dlL "$dsttmp"  2> /dev/null) &&
				set  -f &&
				set  X $old && old=:$2:$4:$5:$6 &&
				set  X $new && new=:$2:$4:$5:$6 &&
				set  +f &&
				test  "$old" = "$new" &&
				$cmpprog  "$dst" "$dsttmp" > /dev/null 2>&1; then
				rm -f "$dsttmp"
			else
				# If $backupsuffix is set, and the file being installed
				# already exists, attempt a backup.  Don't worry if it fails,
				# e.g., if mv doesn't support -f.
				if test -n "$backupsuffix" && test -f "$dst"; then
					$doit  $mvcmd -f "$dst" "$dst$backupsuffix" 2> /dev/null
				fi

				# Rename the file to the real destination.
				$doit $mvcmd -f "$dsttmp" "$dst" 2> /dev/null ||

					# The rename failed, perhaps because mv can't rename something else
					# to itself, or perhaps because mv is so ancient that it does not
					# support -f.
					{
						# Now remove or move aside any old file at destination location.
						# We try this two ways since rm can't unlink itself on some
						# systems and the destination file might be busy for other
						# reasons.  In this case, the final cleanup might fail but the new
						# file should still install successfully.
						{
							test  ! -f "$dst" ||
								$doit $rmcmd "$dst" 2> /dev/null ||
								{
									$doit  $mvcmd -f "$dst" "$rmtmp" 2> /dev/null &&
										{
											$doit  $rmcmd "$rmtmp" 2> /dev/null
											:
										}
								} ||
								{
									echo  "$0: cannot unlink or rename $dst" >&2
									( exit 1)
									exit            1
								}
						} &&

							# Now rename the file to the real destination.
							$doit $mvcmd "$dsttmp" "$dst"
					}
			fi || exit 1

		trap '' 0
	fi
done

# Local variables:
# eval: (add-hook 'before-save-hook 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-time-zone: "UTC0"
# time-stamp-end: "; # UTC"
# End: