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checkpatch: validate signature styles and To: and Cc: lines

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Signatures have many forms and can sometimes cause problems if not in the
correct format when using git send-email or quilt.

Try to verify the signature tags and email addresses to use the generally
accepted "Signed-off-by: Full Name <email@domain.tld>" form.

Original idea by Anish Kumar <anish198519851985@gmail.com>

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Anish Kumar <anish198519851985@gmail.com>
Cc: Nick Bowler <nbowler@elliptictech.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joe Perches 2011-07-25 17:13:23 -07:00 committed by Linus Torvalds
parent 165e72a6c3
commit 2011247550
1 changed files with 115 additions and 8 deletions
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123
scripts/checkpatch.pl
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@ -217,6 +217,16 @@ our $logFunctions = qr{(?x:
MODULE_[A-Z_]+
)};
our $signature_tags = qr{(?xi:
Signed-off-by:|
Acked-by:|
Tested-by:|
Reviewed-by:|
Reported-by:|
To:|
Cc:
)};
our @typeList = (
qr{void},
qr{(?:unsigned\s+)?char},
@ -356,6 +366,76 @@ sub top_of_kernel_tree {
return 1;
}
sub parse_email {
my ($formatted_email) = @_;
my $name = "";
my $address = "";
my $comment = "";
if ($formatted_email =~ /^(.*)<(\S+\@\S+)>(.*)$/) {
$name = $1;
$address = $2;
$comment = $3 if defined $3;
} elsif ($formatted_email =~ /^\s*<(\S+\@\S+)>(.*)$/) {
$address = $1;
$comment = $2 if defined $2;
} elsif ($formatted_email =~ /(\S+\@\S+)(.*)$/) {
$address = $1;
$comment = $2 if defined $2;
$formatted_email =~ s/$address.*$//;
$name = $formatted_email;
$name =~ s/^\s+|\s+$//g;
$name =~ s/^\"|\"$//g;
# If there's a name left after stripping spaces and
# leading quotes, and the address doesn't have both
# leading and trailing angle brackets, the address
# is invalid. ie:
# "joe smith joe@smith.com" bad
# "joe smith <joe@smith.com" bad
if ($name ne "" && $address !~ /^<[^>]+>$/) {
$name = "";
$address = "";
$comment = "";
}
}
$name =~ s/^\s+|\s+$//g;
$name =~ s/^\"|\"$//g;
$address =~ s/^\s+|\s+$//g;
$address =~ s/^\<|\>$//g;
if ($name =~ /[^\w \-]/i) { ##has "must quote" chars
$name =~ s/(?<!\\)"/\\"/g; ##escape quotes
$name = "\"$name\"";
}
return ($name, $address, $comment);
}
sub format_email {
my ($name, $address) = @_;
my $formatted_email;
$name =~ s/^\s+|\s+$//g;
$name =~ s/^\"|\"$//g;
$address =~ s/^\s+|\s+$//g;
if ($name =~ /[^\w \-]/i) { ##has "must quote" chars
$name =~ s/(?<!\\)"/\\"/g; ##escape quotes
$name = "\"$name\"";
}
if ("$name" eq "") {
$formatted_email = "$address";
} else {
$formatted_email = "$name <$address>";
}
return $formatted_email;
}
sub expand_tabs {
my ($str) = @_;
@ -1380,17 +1460,44 @@ sub process {
}
}
#check the patch for a signoff:
# Check the patch for a signoff:
if ($line =~ /^\s*signed-off-by:/i) {
# This is a signoff, if ugly, so do not double report.
$signoff++;
if (!($line =~ /^\s*Signed-off-by:/)) {
WARN("Signed-off-by: is the preferred form\n" .
$herecurr);
}
# Check signature styles
if ($line =~ /^(\s*)($signature_tags)(\s*)(.*)/) {
my $space_before = $1;
my $sign_off = $2;
my $space_after = $3;
my $email = $4;
my $ucfirst_sign_off = ucfirst(lc($sign_off));
if (defined $space_before && $space_before ne "") {
WARN("Do not use whitespace before $ucfirst_sign_off\n" . $herecurr);
}
if ($line =~ /^\s*signed-off-by:\S/i) {
WARN("space required after Signed-off-by:\n" .
$herecurr);
if ($sign_off =~ /-by:$/i && $sign_off ne $ucfirst_sign_off) {
WARN("'$ucfirst_sign_off' is the preferred signature form\n" . $herecurr);
}
if (!defined $space_after || $space_after ne " ") {
WARN("Use a single space after $ucfirst_sign_off\n" . $herecurr);
}
my ($email_name, $email_address, $comment) = parse_email($email);
my $suggested_email = format_email(($email_name, $email_address));
if ($suggested_email eq "") {
ERROR("Unrecognized email address: '$email'\n" . $herecurr);
} else {
my $dequoted = $suggested_email;
$dequoted =~ s/^"//;
$dequoted =~ s/" </ </;
# Don't force email to have quotes
# Allow just an angle bracketed address
if ("$dequoted$comment" ne $email &&
"<$email_address>$comment" ne $email &&
"$suggested_email$comment" ne $email) {
WARN("email address '$email' might be better as '$suggested_email$comment'\n" . $herecurr);
}
}
}