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#!/bin/sh
# This file is part of the coreboot project.
#
# Copyright (C) 2010 coresystems GmbH
# Copyright (C) 2016 Google Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
#
# DESCR: Check that files in have valid license headers
# $1 is an optional command line parameter containing directories to check
# regex list of files and directories to exclude from the search
HEADER_EXCLUDED="\
^src/lib/gnat/|\
^src/vendorcode/|\
^util/amdtools/example_input/|\
^util/cbfstool/lzma/|\
^util/kconfig/|\
Kconfig|\
\<COPYING\>|\
\<LICENSE\>|\
\<README\>|\
Changelog|\
TODO|\
EXAMPLE|\
NEWS|\
ChangeLog|\
Dockerfile|\
\.in$|\
\.[18]$|\
\.md$|\
\.wiki$|\
\.xxdump$|\
\.spec$|\
\.txt$|\
\.jpg$|\
\.cksum$|\
\.bin$|\
\.vbt$|\
\.hex$|\
\.patch$|\
_shipped$|\
/microcode-[^/]*.h$|\
/sdram-.*\.inc$|\
Makefile\.inc|\
\.fmd|\
\.cb|\
\.cfg$|\
\.spd|\
config|\
cmos\.layout|\
cmos\.default\
"
HEADER_TEXT="license header"
#space separated list of directories to test
if [ "$1" = "" ]; then
HEADER_DIRS="src util"
else
HEADER_DIRS="$1"
fi
if [ "$2" = "SPDX_ONLY" ]; then
SPDX_ONLY=1
HEADER_TEXT="SPDX identifier"
fi
LC_ALL=C export LC_ALL
#get initial list from git, removing HEADER_EXCLUDED files.
#make a copy to check for the old style header later.
headerlist=$(git ls-files $HEADER_DIRS | egrep -v "($HEADER_EXCLUDED)")
#update headerlist by removing files that match the license string
check_for_license() {
if [ -n "$headerlist" ] && [ -z "$2" ]; then
headerlist="$(grep -iL "$1" $headerlist 2>/dev/null)"
elif [ -n "$headerlist" ]; then
p1list="$(grep -il "$1" $headerlist 2>/dev/null)"
p2list="$(grep -il "$2" $headerlist 2>/dev/null)"
# Make list of files that were in both previous lists
pbothlist="$(echo $p1list $p2list | tr ' ' "\n" | \
sort | uniq -d)"
# Remove all files that were in both of the previous lists
# Note that this is unstable if we ever get any filenames
# with spaces.
headerlist="$(echo $headerlist $pbothlist | tr ' ' "\n" | \
sort | uniq -u)"
fi
}
#search the files for license headers
check_for_license 'SPDX-License-Identifier: Apache-2.0'
check_for_license 'SPDX-License-Identifier: BSD-3-Clause'
check_for_license 'SPDX-License-Identifier: GPL-2.0-only'
check_for_license 'SPDX-License-Identifier: GPL-2.0-or-later'
check_for_license 'SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note'
check_for_license 'SPDX-License-Identifier: GPL-3.0-only'
check_for_license 'SPDX-License-Identifier: GPL-3.0-or-later'
check_for_license 'SPDX-License-Identifier: ISC'
check_for_license 'SPDX-License-Identifier: MIT'
check_for_license 'SPDX-License-Identifier: X11'
# This is 4 clause ("with advertising") but the University of Berkeley
# declared that 4th clause void, see
# ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
# With this, BSD-4-Clause-UC becomes GPLv2 compatible, and so SPDX doesn't
# differentiate between this license with or without advertising.
check_for_license 'SPDX-License-Identifier: BSD-4-Clause-UC'
if [ ! "${SPDX_ONLY}" = "1" ]; then
check_for_license "under the terms of the GNU General Public License" \
"WITHOUT ANY WARRANTY"
check_for_license 'IS PROVIDED .*"AS IS"'
check_for_license 'IS DISTRIBUTED .*"AS IS"'
check_for_license "IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE"
check_for_license '"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES'
check_for_license 'assumes any liability or responsibility for the use'
check_for_license 'THE AUTHORS DISCLAIM.*ALL WARRANTIES WITH REGARD TO THIS SOFTWARE'
check_for_license 'No license required'
check_for_license 'GNU Lesser General Public'
fi
for file in $headerlist; do
# Verify the file exists, and has content that requires a header
# This assumes that a file that has 4 lines or fewer is not notable
# enough to require a license.
if [ -f "$file" ] && [ "$(wc -l < "$file")" -gt 4 ]; then
echo "$file has no recognized ${HEADER_TEXT}."
fi
done
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