#!/usr/bin/perl -w
# (c) 2007, Joe Perches <joe@perches.com>
# created from checkpatch.pl
#
# Print selected MAINTAINERS information for
# the files modified in a patch or for a file
#
# usage: perl scripts/get_maintainers.pl [OPTIONS] <patch>
# perl scripts/get_maintainers.pl [OPTIONS] -f <file>
#
# Licensed under the terms of the GNU GPL License version 2
use strict;
my $P = $0;
my $V = '0.17';
use Getopt::Long qw(:config no_auto_abbrev);
my $lk_path = "./";
my $email = 1;
my $email_usename = 1;
my $email_maintainer = 1;
my $email_list = 1;
my $email_subscriber_list = 0;
my $email_git = 1;
my $email_git_penguin_chiefs = 0;
my $email_git_min_signatures = 1;
my $email_git_max_maintainers = 5;
my $email_git_since = "1-year-ago";
my $output_multiline = 1;
my $output_separator = ", ";
my $scm = 0;
my $web = 0;
my $subsystem = 0;
my $status = 0;
my $from_filename = 0;
my $version = 0;
my $help = 0;
my $exit = 0;
my @penguin_chief = ();
push(@penguin_chief,"Linus Torvalds:torvalds\@linux-foundation.org");
#Andrew wants in on most everything - 2009/01/14
#push(@penguin_chief,"Andrew Morton:akpm\@linux-foundation.org");
my @penguin_chief_names = ();
foreach my $chief (@penguin_chief) {
if ($chief =~ m/^(.*):(.*)/) {
my $chief_name = $1;
my $chief_addr = $2;
push(@penguin_chief_names, $chief_name);
}
}
my $penguin_chiefs = "\(" . join("|",@penguin_chief_names) . "\)";
# rfc822 email address - preloaded methods go here.
my $rfc822_lwsp = "(?:(?:\\r\\n)?[ \\t])";
my $rfc822_char = '[\\000-\\377]';
if (!GetOptions(
'email!' => \$email,
'git!' => \$email_git,
'git-chief-penguins!' => \$email_git_penguin_chiefs,
'git-min-signatures=i' => \$email_git_min_signatures,
'git-max-maintainers=i' => \$email_git_max_maintainers,
'git-since=s' => \$email_git_since,
'm!' => \$email_maintainer,
'n!' => \$email_usename,
'l!' => \$email_list,
's!' => \$email_subscriber_list,
'multiline!' => \$output_multiline,
'separator=s' => \$output_separator,
'subsystem!' => \$subsystem,
'status!' => \$status,
'scm!' => \$scm,
'web!' => \$web,
'f|file' => \$from_filename,
'v|version' => \$version,
'h|help' => \$help,
)) {
usage();
die "$P: invalid argument\n";
}
if ($help != 0) {
usage();
exit 0;
}
if ($version != 0) {
print("${P} ${V}\n");
exit 0;
}
if ($#ARGV < 0) {
usage();
die "$P: argument missing: patchfile or -f file please\n";
}
my $selections = $email + $scm + $status + $subsystem + $web;
if ($selections == 0) {
usage();
die "$P: Missing required option: email, scm, status, subsystem or web\n";
}
if ($email && ($email_maintainer + $email_list + $email_subscriber_list
+ $email_git + $email_git_penguin_chiefs) == 0) {
usage();
die "$P: Please select at least 1 email option\n";
}
if (!top_of_kernel_tree($lk_path)) {
die "$P: The current directory does not appear to be "
. "a linux kernel source tree.\n";
}
## Read MAINTAINERS for type/value pairs
my @typevalue = ();
open(MAINT, "<${lk_path}MAINTAINERS") || die "$P: Can't open MAINTAINERS\n";
while (<MAINT>) {
my $line = $_;
if ($line =~ m/^(\C):\s*(.*)/) {
my $type = $1;
my $value = $2;
##Filename pattern matching
if ($type eq "F" || $type eq "X") {
$value =~ s@\.@\\\.@g; ##Convert . to \.
$value =~ s/\*/\.\*/g; ##Convert * to .*
$value =~ s/\?/\./g; ##Convert ? to .
##if pattern is a directory and it lacks a trailing slash, add one
if ((-d $value)) {
$value =~ s@([^/])$@$1/@;
}
}
push(@typevalue, "$type:$value");
} elsif (!/^(\s)*$/) {
$line =~ s/\n$//g;
push(@typevalue, $line);
}
}
close(MAINT);
## use the filenames on the command line or find the filenames in the patchfiles
my @files = ();
foreach my $file (@ARGV) {
##if $file is a directory and it lacks a trailing slash, add one
if ((-d $file)) {
$file =~ s@([^/])$@$1/@;
} elsif (!(-f $file)) {
die "$P: file '${file}' not found\n";
}
if ($from_filename) {
push(@files, $file);
} else {
my $file_cnt = @files;
open(PATCH, "<$file") or die "$P: Can't open ${file}\n";
while (<PATCH>) {
if (m/^\+\+\+\s+(\S+)/) {
my $filename = $1;
$filename =~ s@^[^/]*/@@;
$filename =~ s@\n@@;
push(@files, $filename);
}
}
close(PATCH);
if ($file_cnt == @files) {
warn "$P: file '${file}' doesn't appear to be a patch. "
. "Add -f to options?\n";
}
@files = sort_and_uniq(@files);
}
}
my @email_to = ();
my @list_to = ();
my @scm = ();
my @web = ();
my @subsystem = ();
my @status = ();
# Find responsible parties
foreach my $file (@files) {
#Do not match excluded file patterns
my $exclude = 0;
foreach my $line (@typevalue) {
if ($line =~ m/^(\C):\s*(.*)/) {
my $type = $1;
my $value = $2;
if ($type eq 'X') {
if (file_match_pattern($file, $value)) {
$exclude = 1;
}
}
}
}
if (!$exclude) {
my $tvi = 0;
foreach my $line (@typevalue) {
if ($line =~ m/^(\C):\s*(.*)/) {
my $type = $1;
my $value = $2;
if ($type eq 'F') {
if (file_match_pattern($file, $value)) {
add_categories($tvi);
}
}
}
$tvi++;
}
}
if ($email && $email_git) {
recent_git_signoffs($file);
}
}
if ($email) {
foreach my $chief (@penguin_chief) {
if ($chief =~ m/^(.*):(.*)/) {
my $email_address;
if ($email_usename) {
$email_address = format_email($1, $2);
} else {
$email_address = $2;
}
if ($email_git_penguin_chiefs) {
push(@email_to, $email_address);
} else {
@email_to = grep(!/${email_address}/, @email_to);
}
}
}
}
if ($email || $email_list) {
my @to = ();
if ($email) {
@to = (@to, @email_to);
}
if ($email_list) {
@to = (@to, @list_to);
}
output(uniq(@to));
}
if ($scm) {
@scm = sort_and_uniq(@scm);
output(@scm);
}
if ($status) {
@status = sort_and_uniq(@status);
output(@status);
}
if ($subsystem) {
@subsystem = sort_and_uniq(@subsystem);
output(@subsystem);
}
if ($web) {
@web = sort_and_uniq(@web);
output(@web);
}
exit($exit);
sub file_match_pattern {
my ($file, $pattern) = @_;
if (substr($pattern, -1) eq "/") {
if ($file =~ m@^$pattern@) {
return 1;
}
} else {
if ($file =~ m@^$pattern@) {
my $s1 = ($file =~ tr@/@@);
my $s2 = ($pattern =~ tr@/@@);
if ($s1 == $s2) {
return 1;
}
}
}
return 0;
}
sub usage {
print <<EOT;
usage: $P [options] patchfile
$P [options] -f file|directory
version: $V
MAINTAINER field selection options:
--email => print email address(es) if any
--git => include recent git \*-by: signers
--git-chief-penguins => include ${penguin_chiefs}
--git-min-signatures => number of signatures required (default: 1)
--git-max-maintainers => maximum maintainers to add (default: 5)
--git-since => git history to use (default: 1-year-ago)
--m => include maintainer(s) if any
--n => include name 'Full Name <addr\@domain.tld>'
--l => include list(s) if any
--s => include subscriber only list(s) if any
--scm => print SCM tree(s) if any
--status => print status if any
--subsystem => print subsystem name if any
--web => print website(s) if any
Output type options:
--separator [, ] => separator for multiple entries on 1 line
--multiline => print 1 entry per line
Default options:
[--email --git --m --n --l --multiline]
Other options:
--version => show version
--help => show this help information
Notes:
Using "-f directory" may give unexpected results:
Used with "--git", git signators for _all_ files in and below
directory are examined as git recurses directories.
Any specified X: (exclude) pattern matches are _not_ ignored.
Used with "--nogit", directory is used as a pattern match,
no individual file within the directory or subdirectory
is matched.
EOT
}
sub top_of_kernel_tree {
my ($lk_path) = @_;
if ($lk_path ne "" && substr($lk_path,length($lk_path)-1,1) ne "/") {
$lk_path .= "/";
}
if ( (-f "${lk_path}COPYING")
&& (-f "${lk_path}CREDITS")
&& (-f "${lk_path}Kbuild")
&& (-f "${lk_path}MAINTAINERS")
&& (-f "${lk_path}Makefile")
&& (-f "${lk_path}README")
&& (-d "${lk_path}Documentation")
&& (-d "${lk_path}arch")
&& (-d "${lk_path}include")
&& (-d "${lk_path}drivers")
&& (-d "${lk_path}fs")
&& (-d "${lk_path}init")
&& (-d "${lk_path}ipc")
&& (-d "${lk_path}kernel")
&& (-d "${lk_path}lib")
&& (-d "${lk_path}scripts")) {
return 1;
}
return 0;
}
sub format_email {
my ($name, $email) = @_;
$name =~ s/^\s+|\s+$//g;
$name =~ s/^\"|\"$//g;
$email =~ s/^\s+|\s+$//g;
my $formatted_email = "";
if ($name =~ /[^a-z0-9 \.\-]/i) { ##has "must quote" chars
$name =~ s/(?<!\\)"/\\"/g; ##escape quotes
$formatted_email = "\"${name}\"\ \<${email}\>";
} else {
$formatted_email = "${name} \<${email}\>";
}
return $formatted_email;
}
sub add_categories {
my ($index) = @_;
$index = $index - 1;
while ($index >= 0) {
my $tv = $typevalue[$index];
if ($tv =~ m/^(\C):\s*(.*)/) {
my $ptype = $1;
my $pvalue = $2;
if ($ptype eq "L") {
my $list_address = $pvalue;
my $list_additional = "";
if ($list_address =~ m/([^\s]+)\s+(.*)$/) {
$list_address = $1;
$list_additional = $2;
}
if ($list_additional =~ m/subscribers-only/) {
if ($email_subscriber_list) {
push(@list_to, $list_address);
}
} else {
if ($email_list) {
push(@list_to, $list_address);
}
}
} elsif ($ptype eq "M") {
my $p_used = 0;
if ($index >= 0) {
my $tv = $typevalue[$index - 1];
if ($tv =~ m/^(\C):\s*(.*)/) {
if ($1 eq "P") {
if ($email_usename) {
push_email_address(format_email($2, $pvalue));
$p_used = 1;
}
}
}
}
if (!$p_used) {
push_email_addresses($pvalue);
}
} elsif ($ptype eq "T") {
push(@scm, $pvalue);
} elsif ($ptype eq "W") {
push(@web, $pvalue);
} elsif ($ptype eq "S") {
push(@status, $pvalue);
}
$index--;
} else {
push(@subsystem,$tv);
$index = -1;
}
}
}
sub push_email_address {
my ($email_address) = @_;
my $email_name = "";
if ($email_address =~ m/([^<]+)<(.*\@.*)>$/) {
$email_name = $1;
$email_address = $2;
}
if ($email_maintainer) {
if ($email_usename && $email_name) {
push(@email_to, format_email($email_name, $email_address));
} else {
push(@email_to, $email_address);
}
}
}
sub push_email_addresses {
my ($address) = @_;
my @address_list = ();
if (rfc822_valid($address)) {
push_email_address($address);
} elsif (@address_list = rfc822_validlist($address)) {
my $array_count = shift(@address_list);
while (my $entry = shift(@address_list)) {
push_email_address($entry);
}
} else {
warn("Invalid MAINTAINERS address: '" . $address . "'\n");
}
}
sub which {
my ($bin) = @_;
foreach my $path (split(/:/, $ENV{PATH})) {
if (-e "$path/$bin") {
return "$path/$bin";
}
}
return "";
}
sub recent_git_signoffs {
my ($file) = @_;
my $sign_offs = "";
my $cmd = "";
my $output = "";
my $count = 0;
my @lines = ();
if (which("git") eq "") {
warn("$P: git not found. Add --nogit to options?\n");
return;
}
if (!(-d ".git")) {
warn("$P: .git directory not found. Use a git repository for better results.\n");
warn("$P: perhaps 'git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git'\n");
return;
}
$cmd = "git log --since=${email_git_since} -- ${file}";
$cmd .= " | grep -Ei \"^[-_ a-z]+by:.*\\\@.*\$\"";
if (!$email_git_penguin_chiefs) {
$cmd .= " | grep -Ev \"${penguin_chiefs}\"";
}
$cmd .= " | cut -f2- -d\":\"";
$cmd .= " | sort | uniq -c | sort -rn";
$output = `${cmd}`;
$output =~ s/^\s*//gm;
@lines = split("\n", $output);
foreach my $line (@lines) {
if ($line =~ m/([0-9]+)\s+(.*)/) {
my $sign_offs = $1;
$line = $2;
$count++;
if ($sign_offs < $email_git_min_signatures ||
$count > $email_git_max_maintainers) {
last;
}
} else {
die("$P: Unexpected git output: ${line}\n");
}
if ($line =~ m/(.+)<(.+)>/) {
my $git_name = $1;
my $git_addr = $2;
if ($email_usename) {
push(@email_to, format_email($git_name, $git_addr));
} else {
push(@email_to, $git_addr);
}
} elsif ($line =~ m/<(.+)>/) {
my $git_addr = $1;
push(@email_to, $git_addr);
} else {
push(@email_to, $line);
}
}
}
sub uniq {
my @parms = @_;
my %saw;
@parms = grep(!$saw{$_}++, @parms);
return @parms;
}
sub sort_and_uniq {
my @parms = @_;
my %saw;
@parms = sort @parms;
@parms = grep(!$saw{$_}++, @parms);
return @parms;
}
sub output {
my @parms = @_;
if ($output_multiline) {
foreach my $line (@parms) {
print("${line}\n");
}
} else {
print(join($output_separator, @parms));
print("\n");
}
}
my $rfc822re;
sub make_rfc822re {
# Basic lexical tokens are specials, domain_literal, quoted_string, atom, and
# comment. We must allow for rfc822_lwsp (or comments) after each of these.
# This regexp will only work on addresses which have had comments stripped
# and replaced with rfc822_lwsp.
my $specials = '()<>@,;:\\\\".\\[\\]';
my $controls = '\\000-\\037\\177';
my $dtext = "[^\\[\\]\\r\\\\]";
my $domain_literal = "\\[(?:$dtext|\\\\.)*\\]$rfc822_lwsp*";
my $quoted_string = "\"(?:[^\\\"\\r\\\\]|\\\\.|$rfc822_lwsp)*\"$rfc822_lwsp*";
# Use zero-width assertion to spot the limit of an atom. A simple
# $rfc822_lwsp* causes the regexp engine to hang occasionally.
my $atom = "[^$specials $controls]+(?:$rfc822_lwsp+|\\Z|(?=[\\[\"$specials]))";
my $word = "(?:$atom|$quoted_string)";
my $localpart = "$word(?:\\.$rfc822_lwsp*$word)*";
my $sub_domain = "(?:$atom|$domain_literal)";
my $domain = "$sub_domain(?:\\.$rfc822_lwsp*$sub_domain)*";
my $addr_spec = "$localpart\@$rfc822_lwsp*$domain";
my $phrase = "$word*";
my $route = "(?:\@$domain(?:,\@$rfc822_lwsp*$domain)*:$rfc822_lwsp*)";
my $route_addr = "\\<$rfc822_lwsp*$route?$addr_spec\\>$rfc822_lwsp*";
my $mailbox = "(?:$addr_spec|$phrase$route_addr)";
my $group = "$phrase:$rfc822_lwsp*(?:$mailbox(?:,\\s*$mailbox)*)?;\\s*";
my $address = "(?:$mailbox|$group)";
return "$rfc822_lwsp*$address";
}
sub rfc822_strip_comments {
my $s = shift;
# Recursively remove comments, and replace with a single space. The simpler
# regexps in the Email Addressing FAQ are imperfect - they will miss escaped
# chars in atoms, for example.
while ($s =~ s/^((?:[^"\\]|\\.)*
(?:"(?:[^"\\]|\\.)*"(?:[^"\\]|\\.)*)*)
\((?:[^()\\]|\\.)*\)/$1 /osx) {}
return $s;
}
# valid: returns true if the parameter is an RFC822 valid address
#
sub rfc822_valid ($) {
my $s = rfc822_strip_comments(shift);
if (!$rfc822re) {
$rfc822re = make_rfc822re();
}
return $s =~ m/^$rfc822re$/so && $s =~ m/^$rfc822_char*$/;
}
# validlist: In scalar context, returns true if the parameter is an RFC822
# valid list of addresses.
#
# In list context, returns an empty list on failure (an invalid
# address was found); otherwise a list whose first element is the
# number of addresses found and whose remaining elements are the
# addresses. This is needed to disambiguate failure (invalid)
# from success with no addresses found, because an empty string is
# a valid list.
sub rfc822_validlist ($) {
my $s = rfc822_strip_comments(shift);
if (!$rfc822re) {
$rfc822re = make_rfc822re();
}
# * null list items are valid according to the RFC
# * the '1' business is to aid in distinguishing failure from no results
my @r;
if ($s =~ m/^(?:$rfc822re)?(?:,(?:$rfc822re)?)*$/so &&
$s =~ m/^$rfc822_char*$/) {
while ($s =~ m/(?:^|,$rfc822_lwsp*)($rfc822re)/gos) {
push @r, $1;
}
return wantarray ? (scalar(@r), @r) : 1;
}
else {
return wantarray ? () : 0;
}
}
