#!/bin/bash

# Don't edit the next line; use "make version" instead.
VER=0.9.6

: <<EOF
=pod

=head1 NAME

sbopkglint - check Slackware binary packages for common errrors.

=head1 SYNOPSIS

B<sbopkglint> [-k] [-i] [-s] [-c | --color] [-m | --mono] [I<package.t?z> I<...>]

=head1 DESCRIPTION

B<sbopkglint> installs a Slackware package to a temporary directory, then
examines the contents. It finds lots of common problems that aren't
always noticed by SBo script maintainers or the admins.

This is for built packages. If you want to lint your build scripts,
use B<sbolint>(1) instead.

With no package arguments, it looks for a SlackBuild in the current
directory, extracts the PRINT_PACKAGE_NAME information, and tries
to find a package in $OUTPUT (/tmp by default). If found, it checks
that package. It's up to you to know whether the package needs to be
rebuilt (e.g. if you've edited the SlackBuild since the package was
built).

With arguments, it checks the given packages. These must be
supported Slackware package files (.tgz, .txz, .tlz, etc). There's no
requirement that these have to be SBo packages, but a couple of the
tests (e.g. the check for $PRGNAM.SlackBuild in the doc dir) might not
apply to non-SBo builds.

Diagnostics will be logged to B<stdout> and B<stderr>. Exit status will
be 0 if all tests passed, non-zero otherwise.

This script must run as root. If you run it as a normal user, it tries
to re-execute itself via sudo(8) before installing any packages. If
you dislike sudo, you can always run it as root.

Note that B<sbopkglint> is intended to help you, not control you. If
your build fails the tests, and you're 100% sure it's correct, please
contact the maintainer (B<urchlay@slackware.uk>) and explain the
situation. Most likely, B<sbopkglint> will be modified to accomodate your
code, unless something really is wrong with it.

=head1 OPTIONS

Bundling options is supported, e.g. B<-ki> is the same as B<-k -i>.

=over 4

=item B<-k>, B<--keep>

Keep the temporary package install directory instead of deleting it on exit.

=item B<-i>, B<--install-ok>

Disable the "useless-looking install instructions" test. This is
intended for SBo admins mass-linting a ton of packages. INSTALL in
the doc dir is something that exists in thousands of existing builds,
and it's not a major problem. New builds and updates should be linted
without this option, however.

=item B<-s>, B<--slackbuild-missing-ok>

Disable the check for /usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild.
For use with non-SBo packages (including core Slackware packages).

=item B<-c>, B<--color>

Colorize the output (green I<OK>, red I<FAILED>, etc). Default is to use
color only when B<stdout> is a terminal.

=item B<-m>, B<--mono>

Do not colorize the output, even if B<stdout> is a terminal.

=item B<--doc>, B<--help>

View this documentation using perldoc(1), which generally uses your
pager (e.g. less(1) or more(1)) to display it.

=item B<--man>

Convert this documentation to a man page, on B<stdout>.

=item B<-v>, B<--version>

Print the B<sbopkglint> version number on B<stdout> and exit.

=back

=head1 EXIT STATUS

0 (success) if all tests passed for all packages, non-zero if there
were any test failures (or if installpkg failed for some reason).

=head1 FILES

=over 4

=item B<sbolint.d/*.t.sh>

These are the actual tests. They're installed to
I<PREFIX>/share/sbo-maintainer-tools, and they're sourced by
B<sbopkglint> at runtime. Each test script begins with (hopefully)
useful comments that go into more detail than the documentation here.

=back

=head1 TESTS

=head2 pre-doinst

This test is done before B<doinst.sh> is run, unlike the rest of
the tests. It checks for the existence of various files that should
not be in the package, but are OK if generated by B<doinst.sh>,
e.g. I</usr/info/dir>. It also checks for the existence of symlinks
in the package (these also must be created by B<doinst.sh>, not
included in the package archive).

=head2 basic-sanity

=over 4

=item B<->

Top-level directories inside the package must be recognized ones,
such as /bin /etc /usr /opt. Packages shouldn't be installing files
in /tmp, /dev, or /home... and they really shouldn't be inventing
new top-level directories.

=item B<->

The documentation directory must exist and be correctly named, as
/usr/doc/$PRGNAM-$VERSION.

=item B<->

The documentation directory must contain $PRGNAM.SlackBuild. This
check can be disabled with the B<-s> option.

=item B<->

The directories /usr/local, /usr/share/doc, /usr/share/man, /usr/etc
are not allowed in SBo packages.

=item B<->

Some directories (e.g. /usr/bin) may not contain subdirectories.

=item B<->

Some directories (e.g. /usr/share) must *only* contain subdirectories.

=item B<->

All files in /bin, /usr/bin, /sbin, /usr/sbin must be executable (have
at least one +x bit set).

=item B<->

Some directories (e.g. /usr/man, /usr/share/applications) must not
contain files with executable permissions. /usr/doc is not in this
list; neither is /etc (too many existing packages install +x files
there).

=item B<->

Broken symlinks may not exist.

=item B<->

Absolute symlinks may not exist (they should be converted to
relative symlinks). This may seem like nitpicking, but packages
may be installed somewhere besides / (the root dir) with the
-root option to installpkg. If /usr/bin/foo is a link to /usr/bin/bar,
it should be a link to just bar.

=back

=head2 docs

=over 4

=item B<->

Documentation must be installed to /usr/doc/$PRGNAM-$VERSION. If
there's any other directory under /usr/doc, it's incorrect. Some
builds use mis-named doc directories (if it hasn't been fixed by
now, an example is gcc5, which installs docs to /usr/doc/gcc-$VERSION
when it should be gcc5-$VERSION).

=item B<->

Documentation files must be readable by everyone, and owned by root:root.

=item B<->

Doc dir shouldn't contain empty files (0 bytes in length).

=item B<->

Doc dir shouldn't contain install instructions. Specifically, files
named INSTALL, INSTALL.*, or install.txt are flagged (it's impossible
to make this test 100% perfect). This check can be disabled with
the B<-i> option.

=item B<->

Any *.pdf files found in the doc dir are checked with B<pdfinfo> to
make sure they really are PDF files, and not corrupt/damaged.

=back

=head2 noarch

=over 4

=item B<->

If a package has its architecture set to "noarch", it must not contain
any ELF binaries/libraries.

=back

=head2 arch

=over 4

=item B<->

If a package has its architecture set to i?86 or x86_64, all ELF
binaries/libraries must be for the correct arch (no 32-bit code in
64-bit packages, and vice versa).

=item B<->

If a package is i?86, it must not contain /usr/lib64.

=item B<->

If a package is x86_64 and contains shared libraries, they must be
in /lib64 or /usr/lib64 (not /lib or /usr/lib).

=back

=head2 lafiles

=over 4

=item B<->

Packages are no longer allowed to contain libtool archive files (.la)
in /lib, /lib64, /usr/lib, or /usr/lib64. However, subdirectories
such as /usr/lib64/someprogram/ are not checked, since some applications
which use plugins actually use the .la files.

=back

=head2 manpages

=over 4

=item B<->

All man pages must be readable by everyone, and owned by root:root.

=item B<->

All man pages must be gzipped.

=item B<->

All man pages must be in /usr/man/man[1-9n] or /usr/man/<lang>/man[1-9n].

=item B<->

Man page directories must be mode 755, owned by root:root.

=item B<->

The section numbers in man page filenames must match the section number
in the directory name (e.g. /usr/man/man1/ls.1.gz is OK,
/usr/man/man1/tetris.6.gz is an error).

=item B<->

Man pages must actually be man pages (troff markup).

=back

=head2 desktop

=over 4

=item B<->

If there are .desktop files, doinst.sh must run update-desktop-database.

=item B<->

.desktop files must be mode 644, owned by root:root. Slackware's KDE
packages actually break this rule (they install executable .desktop
files), but SBo packages are not allowed to.

=item B<->

Only .desktop files are allowed in /usr/share/applications.

=item B<->

.desktop files must be valid, according to the desktop-file-validate
command. Only actual errors count; warnings don't cause this test to
fail.

=back

=head2 newconfig

=over 4

=item B<->

Any files (outside of /usr/doc) with names ending in .new are flagged.
This might be a bit too restrictive (possibly only check /etc and
/usr/share?)

=back

=head2 doinst

=over 4

=item B<->

If there are icons in /usr/share/icons, .desktop files in /usr/share/applications,
or glib2 schemas in /usr/share/glib-2.0/schemas, there must be a doinst.sh
with appropriate command(s), e.g. update-desktop-database, gtk-update-icon-cache,
glib-compile-schemas.

=back

=head2 icons

=over 4

=item B<->

Files in /usr/share/pixmaps and /usr/share/icons/hicolor must be known
image file types (PNG, SVG, JPEG, etc). Their filename extensions must
match the image type (e.g. file.png must actually be a PNG and not
some other MIME type).

=item B<->

Image files in /usr/share/icons/hicolor/<size>x<size>/* must actually be
the correct pixel size.

=back

=head2 usr_info

=over 4

=item B<->

Files in /usr/info must be valid GNU TexInfo files. Normally these are
gzipped; non-gzipped files will be noted, but some packages require
.info files to be uncompressed because they e.g. display them in a GUI
(so this is not an error).

=item B<->

If there are info files, there must be a doinst.sh which uses
install-info to add them to B</usr/info/dir>.

=item B<->

Ideally, there should also be a douninst.sh which recreates
B</usr/info/dir> after the package's .info files are removed. Since
douninst.sh is still pretty new (first introduced with Slackware
15.0), and since we have thousands of builds with .info files that
don't use it, this isn't an error. Lack of douninst.sh will be noted.

=back

=head2 python

=over 4

=item B<->

If a Python module is installed under the name UNKNOWN (e.g.
/usr/lib64/python3.9/site-packages/UNKNOWN-1.2.3/), that module was
built incorrectly and is non-functional, so it'll be flagged as an
error.

=back

=head2 tmp_path

=over 4

=item B<->

No file in the package may have B<$TMP/package-*> included in the
file. This includes both text and binary files.

For this check to work properly, the B<TMP> environment variable used
to build the package should also be set when running B<sbopkglint>. If
you didn't set B<TMP>, the default is I</tmp/SBo>, which is the same
as the default B<TMP> in all SBo SlackBuild scripts.

=back

=head2 static_libs

If there are static libraries in /usr/lib or /usr/lib64:

=over 4

=item B<->

B<*.a> files are checked to make sure they really are static libraries.

=item B<->

Permissions must be 0644 or 044, owner root:root.

=item B<->

If a libI<foo>.a file has a corresponding libI<foo>.so, a note is printed,
suggesting removal of the B<.a> file. This is not an error, just food for thought.

=back

=head1 BUGS

Probably many. This is still a work in progress.

One known problem is that the same file can fail multiple tests. E.g.
if you have a man page that's installed executable, it will fail both
the basic-sanity test and the manpages test. This isn't really a huge
problem, so it might not be fixed any time soon.

=head1 AUTHOR

B. Watson <urchlay@slackware.uk>, aka Urchlay on Libera IRC.

=head1 SEE ALSO

B<sbolint>(1), B<sbodl>, B<sbofixinfo>(1), B<sbopkg>(8), B<sboinstall>(1)

=cut
EOF

SELF="$( basename $0 )"

COLOR=${COLOR:-auto}

# Note: list long options with the -- but short ones without the - here.
parse_option() {
	case "$1" in
		--version|v) echo $VER ; exit 0 ;;
		--h*|--doc|h) exec perldoc "$0" ;;
		--man) exec pod2man --stderr -s1 -csbo-maintainer-tools -r$VER "$0" ;;
		--keep|k) KEEP=1 ;;
		--install-ok|i) INSTALL_DOCS_OK=1 ;;
		--slackbuild-missing-ok|s) SLACKBUILD_MISSING_OK=1 ;;
		--color|c) COLOR=yes ;;
		--mono*|m) COLOR=no  ;;
		*) echo "$SELF: invalid option '$1', try '$SELF --help'" ; exit 1 ;;
	esac
}

while true; do
	case "$1" in
		--) shift ; break ;;
		--*) parse_option "$1" ; shift ;;
		-*)
			opt="$( printf "%s" "$1" | sed -e 's,^-,,' -e 's,\(.\),\1 ,g' )"
			for i in $opt; do
				parse_option "$i"
			done
			shift ;;
		*) break ;;
	esac
done

# where the test scripts live, space-separated list. to allow for
# running sbopkglint from within its own directory, without installing it,
# check for a sbopkglint.d in the script's dir.
script_dir="$( dirname $( realpath $0 ) )"

# this line gets modified by 'make install'.
prefix_dir="@PREFIX@"

case "$prefix_dir" in
  @*) ;; # unset, don't use.
  *)  prefix_script_dir+=" $prefix_dir/share/sbo-maintainer-tools/sbopkglint.d"
esac

SBOPKGLINT_PATH=${SBOPKGLINT_PATH:-"$script_dir/sbopkglint.d $prefix_script_dir"}

if [ "$(id -u)" != "0" ]; then
	exec sudo \
		TMP="$TMP" \
		OUTPUT="$OUTPUT" \
		INSTALL_DOCS_OK="$INSTALL_DOCS_OK" \
		KEEP="$KEEP" \
		SBOPKGLINT_PATH="$SBOPKGLINT_PATH" \
		SLACKBUILD_MISSING_OK="$SLACKBUILD_MISSING_OK" \
		COLOR="$COLOR" \
		"$0" -- "$@"
fi

if [ "$COLOR" = "auto" ]; then
	if [ -t 1 ]; then
		COLOR=yes
	else
		COLOR=no
	fi
fi

if [ "$COLOR" = "yes" ]; then
	RED="\033[1;31m"
	GREEN="\033[1;32m"
	COLOR_OFF="\033[0m"
fi

echo_OK() {
	echo -e "${GREEN}OK${COLOR_OFF}"
}

echo_FAILED() {
	echo -e "${RED}FAILED${COLOR_OFF}"
}

warn() {
	[ "$warncount" = "0" ] && echo
	: $(( warncount ++ ))
	echo -e "${RED}--- ERR:${COLOR_OFF} $@" 1>&2
}

note() {
	[ "$warncount" = "0" ] && echo
   echo -e "${GREEN}___ note:${COLOR_OFF} $@" 1>&2
}

die() {
	warn "$@"
	exit 1
}

find_warnfiles() {
	local msg
	local output=.files.$RANDOM
	local note=0

	if [ "$1" = "--note" ]; then
		note=1
		shift
	fi

	msg="$1"
	shift

	find "$@" -print0 | xargs -r0 ls -bld &> $output
	if [ -s $output ]; then
		if [ "$note" = "0" ]; then
			warn "$msg"
		else
			note "$msg"
		fi
		cat $output 1>&2
	fi
	rm -f $output
}

# return true if the file is gzipped, otherwise false.
# faster than using file(1).
is_gzipped() {
	[ "$( hexdump -n 2 -e '"%2x"' "$1" )" = '8b1f' ]
}

# N.B. these need to match the template (and they do)
TMP=${TMP:-/tmp/SBo}
OUTPUT=${OUTPUT:-/tmp}

exit_status=0

if [ -n "$1" ]; then
	packages="$@"
else
	cnt="$( /bin/ls *.SlackBuild | wc -l )"
	case "$cnt" in
		0) die "No argument given and no SlackBuild script in current dir" ;;
		1) ;; # OK
		*) die "Multiple SlackBuild scripts in current dir" ;;
	esac
	script="$( /bin/ls *.SlackBuild )"
	if ! grep -q PRINT_PACKAGE_NAME $script; then
		die "$script doesn't support PRINT_PACKAGE_NAME"
	fi
	filename="$( PRINT_PACKAGE_NAME=1 sh $script )"
	packages="$OUTPUT/$filename"
	if [ ! -e "$packages" ]; then
		die "Can't find $packages"
	fi
fi

for testdir in $SBOPKGLINT_PATH; do
	[ -d $testdir ] || continue
	testdir="$( realpath $testdir )"
	break
done
[ -z "$testdir" -o "$testdir/*.t.sh" = '*.t.sh' ] && \
	die "Can't find any tests to run, looked in: $SBOPKGLINT_PATH"

echo "Using tests from $testdir"

if echo "$packages" | grep -q ' '; then
	want_summary=1
fi

faillist=""
passcount=0
failcount=0

# 20231204 bkw: Bad Things Happen if $TMP doesn't exist.
mkdir -p "$TMP"

for package in $packages; do
	if [ ! -e "$package" ]; then
		warn "$package does not exist"
		echo_FAILED
		continue
	fi

	filename="$( basename $package )"

	ARCH="$(    echo $filename | rev | cut -d- -f2  | rev )"
	PRGNAM="$(  echo $filename | rev | cut -d- -f4- | rev )"
	VERSION="$( echo $filename | rev | cut -d- -f3  | rev )"

	PKG="$( mktemp -d $TMP/sbopkglint.XXXXXX )"
	if [ "$PKG" = "" ]; then
	  warn "Can't create temp directory in $TMP, bailing!"
	  exit 1
	fi

	totalwarns=0
	foundtests=0

	# pre-doinst test requires extracting the package *without*
	# running its doinst.sh. this is so we can check for e.g.
	# /usr/info/dir existing in the package (rather than being
	# created by doinst, which would be OK).
	echo -n "Exploding $package to $PKG ..."
	olddir="$( pwd )"
	package_fullpath="$( realpath $package )"
	cd "$PKG"

	# 20260429 bkw: new helper explodepkg.sbopkglint. If not found in
	# PATH, look in the same dir sbopkglint lives in. I had to make a
	# modified explodepkg because the real one *never* shows any error
	# message from tar or exits with non-zero status, even if the disk
	# fills up, or if the *package file doesn't exist*.
	# We had problems with large packages (e.g. cuda_toolkit_12 and _13)
	# filling up $TMP, which resulted in lot of spurious errors caused
	# by 0-byte files (because even when the storage is full, the inodes
	# aren't exhausted, so *creating* files still works).
	# Replacing explodepkg isn't ideal, but it's the least worst solution IMO.
	exploder="$( type -p explodepkg.sbopkglint )"
	if [ -z "$exploder" ]; then
		exploder="$script_dir/explodepkg.sbopkglint"
		if [ ! -x "$exploder" ]; then
			die "Can't find explodepkg.sbopkglint in either PATH or $script_dir"
		fi
	fi

	"$exploder" "$package_fullpath" &> $PKG/.tmp.$$
	S="$?"

	if [ "$S" != "0" ]; then
		echo_FAILED
		cat $PKG/.tmp.$$
		echo "explodepkg.sbopkglint exited with status $S"
		[ "$KEEP" = "" ] && rm -rf $PKG
		exit_status=1
		continue
	fi

	# 20260429 bkw: every valid Slackware package must have this dir. If it's
	# missing, the user probably screwed up and gave the source tarball instead
	# of the package file on the command line.
	if [ ! -d install ]; then
		cat $PKG/.tmp.$$
		warn "not a valid Slackware package (no install/ dir)"
		echo_FAILED
		rm -rf $PKG
		exit_status=1
		continue
	fi
	echo_OK

	echo -n "Running pre-doinst test..."
	warncount=0
	source $testdir/pre-doinst.sh
	if [ "$warncount" = "0" ]; then
		echo_OK
	else
		echo_FAILED
		: $(( totalwarns += warncount ))
	fi
	cd "$olddir"
	rm -rf $PKG
	mkdir -p $PKG

	# now the "real" tests
	echo -n "Installing $package to $PKG ..."
	/sbin/installpkg -root "$PKG" "$package" &> $PKG/.tmp.$$
	S="$?"

	if [ "$S" != "0" ]; then
		echo_FAILED
		cat $PKG/.tmp.$$
		echo "installpkg exited with status $S"
		[ "$KEEP" = "" ] && rm -rf $PKG
		exit_status=1
		continue
	fi

	echo_OK
	rm -f $PKG/.tmp.$$

	olddir="$( pwd )"
	cd "$PKG"

	for testscript in $testdir/*.t.sh; do
		foundtests=1
		(
			warncount=0
			echo -n "Running test: $( basename $testscript .t.sh )..."
			source "$testscript"
			if [ "$warncount" = "0" ]; then
				echo_OK
			else
				echo_FAILED
				echo "$warncount" > .tmp.warncount
			fi
		)
		if [ -e .tmp.warncount ]; then
			warns="$( cat .tmp.warncount )"
			: $(( totalwarns += warns ))
		fi
		rm -f .tmp.warncount
	done

	cd "$olddir"

	[ "$KEEP" = "" ] && rm -rf "$PKG"

	if [ "$foundtests" = "0" ]; then
		die "!!! can't find any tests to run in $testdir."
	fi

	if [ "$totalwarns" = "0" ]; then
		echo -e "=== $filename: ${GREEN}All tests passed${COLOR_OFF}"
		: $(( passcount ++ ))
	else
		exit_status=1
		echo -e "!!! $filename: ${RED}$totalwarns failures${COLOR_OFF}"
		: $(( failcount ++ ))
		faillist+="$filename "
	fi
	[ "$want_summary" = "1" ] && echo
done

if [ "$want_summary" = "1" ]; then
	count=$(( failcount + passcount ))
	echo "=== $count packages linted, $passcount passed, $failcount failed"
	if [ "$failcount" = "0" ]; then
		echo -e "=== ${GREEN}All packages check out OK${COLOR_OFF}"
	else
		echo -e "!!! ${RED}Failed packages:${COLOR_OFF}"
		for i in $faillist; do
			echo $i
		done
	fi
fi

exit $exit_status
