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kc3-lang/gnulib/check-copyright
Pádraig Brady
- check-copyright
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#!/bin/sh # # Copyright (C) 2011-2025 Free Software Foundation, 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, either version 3 of the License, or # (at your option) any later version. # # 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. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <https://www.gnu.org/licenses/>. # # func_file_license # Input: # - file A file name. # Output: # - file_license The license mentioned in the file, # or a token with '??' if unknown. func_file_license () { if head -n 50 $file | grep 'the GNU LGPLv3[+] or the GNU GPLv2[+]' > /dev/null \ || { { head -n 50 $file | grep 'under the terms of either:' > /dev/null; } \ && { head -n 50 $file | grep 'GNU Lesser General Public' > /dev/null; } \ && { head -n 50 $file | grep 'GNU General Public' > /dev/null; } \ && { head -n 50 $file | grep 'either version 3' > /dev/null; } \ && { head -n 50 $file | grep 'either version 2' > /dev/null; }; }; then file_license='LGPLv3+ or GPLv2+' else if head -n 50 $file | grep 'GNU General Public' > /dev/null; then if { head -n 50 $file | grep 'version 3 or later' > /dev/null; } \ || { head -n 50 $file | grep 'either version 3' > /dev/null; }; then file_license='GPL' # an alias for GPLv3+ else if { head -n 50 $file | grep 'version 2 or later' > /dev/null; } \ || { head -n 50 $file | grep 'either version 2' > /dev/null; }; then file_license='GPLv2+' else file_license='GPL??' fi fi else if head -n 50 $file | grep 'Lesser General' > /dev/null; then if { head -n 50 $file | grep 'version 3 or later' > /dev/null; } \ || { head -n 50 $file | grep 'either version 3' > /dev/null; }; then file_license='LGPL' # an alias for LGPLv3+ else if { head -n 50 $file | grep 'version 2 or later' > /dev/null; } \ || { head -n 50 $file | tr -d '\n' | grep 'version 2 of the *. *License, or' > /dev/null; } \ || { head -n 50 $file | tr -d '\n' | grep 'version 2\.1 of the *. *License, or' > /dev/null; }; then file_license='LGPLv2+' else file_license='LGPL??' fi fi else if head -n 50 $file | grep 'unlimited permission to copy and/or distribute' > /dev/null; then file_license='unlimited' else if head -n 50 $file | grep 'This file is in the public domain' > /dev/null; then file_license='public domain' else file_license='??' fi fi fi fi fi } # func_module_license # Input: # - module A module name. # Output: # - module_license The license mentioned in the module. func_module_license () { module_license=`./gnulib-tool --extract-license $module` if test "$module_license" = 'GPLv3+' || test "$module_license" = 'GPLed build tool'; then module_license='GPL' else if test "$module_license" = 'GPLv2+ build tool'; then module_license='GPLv2+' fi fi } # func_weaker_license license1 license2 # Determines the weaker among the licenses license1, license2. # Input: # - license1 A license. # - license2 A license. # Output: # - weaker_license The weaker among the licenses license1, license2. func_weaker_license () { if test "$1" = 'public domain' || test "$2" = 'public domain'; then weaker_license='public domain' else if test "$1" = 'unlimited' || test "$2" = 'unlimited'; then weaker_license='unlimited' else if test "$1" = 'LGPLv2+' || test "$2" = 'LGPLv2+'; then weaker_license='LGPLv2+' else if test "$1" = 'LGPLv3+ or GPLv2+' || test "$2" = 'LGPLv3+ or GPLv2+'; then weaker_license='LGPLv3+ or GPLv2+' else if { test "$1" = 'LGPL' && test "$2" != 'GPLv2+'; } \ || { test "$2" = 'LGPL' && test "$1" != 'GPLv2+'; }; then weaker_license='LGPL' else if { test "$1" = 'GPLv2+' && test "$2" != 'LGPL'; } \ || { test "$2" = 'GPLv2+' && test "$1" != 'LGPL'; }; then weaker_license='GPLv2+' else if test "$1" = "$2"; then weaker_license="$1" else weaker_license='<complex>' fi fi fi fi fi fi fi } # Iterate over the modules and collect the mismatch candidates. candidates= for module in `./gnulib-tool --list`; do func_module_license for file in `./gnulib-tool --extract-filelist "$module" | grep '^\(lib\|build-aux\)/'`; do case $file in *.class) # These are binary files, that don't contain a license notice. ;; *) func_file_license if test "$file_license" != "$module_license"; then # This pair (module, file) is a mismatch candidate. case " $candidates " in *" $file "*) ;; *) candidates="$candidates $file" ;; esac fi ;; esac done done # Look at the candidates in more detail. error=0 for file in $candidates; do func_file_license weakest_license= for module in `./gnulib-tool --find "$file"`; do func_module_license if test -z "$weakest_license"; then weakest_license="$module_license" else func_weaker_license "$weakest_license" "$module_license" weakest_license="$weaker_license" fi done if test "$file_license" != "$weakest_license"; then # The 'glob' module is a special case. It contains LGPLv2+ code (shared with # glibc) but at the same time also has a dependency to a module under GPL # (namely, 'fstatat'). This is not a mistake. if test "$weakest_license" = GPL \ && case "$file" in lib/glob*) true ;; *) false ;; esac; then : else if test $error = 0; then echo "Module License File License File name" echo "================= ================= =====================================" fi printf '%-17s %-17s %s\n' "$weakest_license" "$file_license" "$file" error=1 fi fi done exit $error