--- /dev/null
+#!/usr/bin/perl -w
+
+=head1 NAME
+
+relicense.pl
+
+=head1 SYNOPSIS
+
+relicense.pl [options] -p <permissions file> <file> [<file>...]
+
+Option:
+
+ -p,--permitted=FILE Specify file of emails with relicensing permission
+ -f,--force Manually force relicensing
+ -h,--help Display brief help message
+ -v,--verbose Increase verbosity
+ -q,--quiet Decrease verbosity
+
+=cut
+
+use File::Slurp;
+use IPC::Run qw ( run );
+use Getopt::Long;
+use Pod::Usage;
+use strict;
+use warnings;
+
+# Parse command-line options
+my $verbosity = 0;
+my $permfile;
+my $force;
+Getopt::Long::Configure ( "bundling", "auto_abbrev" );
+GetOptions (
+ 'permitted|p=s' => \$permfile,
+ 'force|f' => \$force,
+ 'verbose|v+' => sub { $verbosity++; },
+ 'quiet|q+' => sub { $verbosity--; },
+ 'help|h' => sub { pod2usage ( 1 ); },
+) or die "Could not parse command-line options";
+pod2usage ( 1 ) unless @ARGV;
+
+# Read permitted emails file
+my @emails = ( $permfile ? read_file ( $permfile ) : () );
+chomp @emails;
+my $permitted = { map { /^.*<(\S+)>$/; ( $1 || $_ ) => 1 } @emails };
+
+# Define list of relicensable licences
+my $relicensable = {
+ GPL2_OR_LATER => 1,
+};
+
+# Define blurb to be added to copyright notice
+my $blurb = '
+ *
+ * You can also choose to distribute this program under the terms of
+ * the Unmodified Binary Distribution Licence (as given in the file
+ * COPYING.UBDL), provided that you have satisfied its requirements.';
+
+# Process files
+my @succeeded;
+my @failed;
+while ( my $filename = shift @ARGV ) {
+
+ # Read file to determine existing licence
+ my $file = read_file ( $filename );
+ my @licences = ( $file =~ /^\s*FILE_LICENCE\s*\(\s*(\S+)\s*\)\s*;?$/mg );
+ die "No licence declaration in $filename\n" unless @licences;
+ die "Multiple licence declarations in $filename\n" if @licences > 1;
+ my $licence = $licences[0];
+
+ # Skip if file is already UBDL-licensed
+ next if $licence =~ /_OR_UBDL$/;
+
+ # Fail immediately if file is not a candidate for relicensing
+ if ( ! exists $relicensable->{$licence} ) {
+ print "Non-relicensable licence $licence in $filename\n";
+ push @failed, $filename;
+ next;
+ }
+
+ # Run git-blame
+ my $stdout;
+ my $stderr;
+ run [ "git", "blame", "-M", "-C", "-p", "-w", $filename ],
+ \undef, \$stdout, \$stderr
+ or die "git-blame $filename: $?";
+ die $stderr if $stderr;
+
+ # Process output
+ my @stdout = split ( /\n/, $stdout );
+ chomp @stdout;
+ my $details = {};
+ my $failures = 0;
+ while ( @stdout ) {
+
+ # Parse output
+ my $commit_line = shift @stdout;
+ ( my $commit, undef, my $lineno, undef, my $count ) =
+ ( $commit_line =~
+ /^([0-9a-f]{40})\s+([0-9]+)\s+([0-9]+)(\s+([0-9]+))?$/ )
+ or die "Malformed commit line \"$commit_line\"\n";
+ if ( $count ) {
+ $details->{$commit} ||= {};
+ while ( ! ( $stdout[0] =~ /^\t/ ) ) {
+ my $detail_line = shift @stdout;
+ ( my $key, undef, my $value ) =
+ ( $detail_line =~ /^([a-z-]+)(\s+(.+))?$/ )
+ or die "Malformed detail line \"$detail_line\" for $commit_line\n";
+ $details->{$commit}->{$key} = $value;
+ }
+ }
+ die "Missing commit details for $commit_line\n"
+ unless %{$details->{$commit}};
+ my $code_line = shift @stdout;
+ ( my $line ) = ( $code_line =~ /^\t(.*)$/ )
+ or die "Malformed code line \"$code_line\" for $commit_line\n";
+
+ # Skip trivial lines and lines so common that they are likely to
+ # be misattributed by git-blame
+ next if $line =~ /^\s*$/; # Empty lines
+ next if $line =~ /^\s*\/\*/; # Start of comments
+ next if $line =~ /^\s*\*/; # Middle (or end) of comments
+ next if $line =~ /^\s*\{\s*$/; # Standalone opening braces
+ next if $line =~ /^\s*\};?\s*$/; # Standalone closing braces
+ next if $line =~ /^\#include/; # Header inclusions
+ next if $line =~ /^\s*return\s+0;/; # return 0;
+ next if $line =~ /^\s*return\s+rc;/; # return rc;
+ next if $line =~ /^\s*PCI_ROM\s*\(.*\)\s*,\s*$/; # PCI IDs
+ next if $line =~ /^\s*FILE_LICENCE\s*\(.*\)\s*;$/; # Licence declarations
+
+ # Identify author
+ my $author_mail = $details->{$commit}->{"author-mail"}
+ or die "Missing author email for $commit_line\n";
+ ( my $email ) = ( $author_mail =~ /^<(\S+)>$/ )
+ or die "Malformed author email \"$author_mail\" for $commit_line\n";
+ undef $email if exists $details->{$commit}->{boundary};
+
+ # Check for relicensing permission
+ next if defined $email && exists $permitted->{$email};
+
+ # Print out lines lacking permission
+ printf $filename."\n" unless $failures;
+ printf "%4d %-30s %s\n", $lineno, ( $email || "<root>" ), $line;
+ $failures++;
+ }
+
+ # Fail if there are any non-trivial lines lacking relicensing permission
+ if ( $failures && ! $force ) {
+ push @failed, $filename;
+ next;
+ }
+
+ # Modify FILE_LICENCE() line
+ $file =~ s/(^\s*FILE_LICENCE\s*\(\s*${licence})(\s*\)\s*;?$)/$1_OR_UBDL$2/m
+ or die "Could not modify FILE_LICENCE() in $filename\n";
+
+ # Modify copyright notice, if present
+ if ( $file =~ /GNU General Public License/i ) {
+ $file =~ s/(02110-1301, USA.$)/$1${blurb}/m
+ or die "Could not modify copyright notice in $filename\n";
+ }
+
+ # Write out modified file
+ write_file ( $filename, { atomic => 1 }, $file );
+ push @succeeded, $filename;
+}
+
+print "Relicensed: ".join ( " ", @succeeded )."\n" if @succeeded;
+die "Cannot relicense: ".join ( " ", @failed )."\n" if @failed;
Code Review / kvmfornfv.git / blobdiff