-# Copyright (C) 2016-2018 all contributors <meta@public-inbox.org>
+# Copyright (C) 2016-2021 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+
+# Default spam filter class for wrapping spamc(1)
package PublicInbox::Spamcheck::Spamc;
use strict;
use warnings;
use PublicInbox::Spawn qw(popen_rd spawn);
use IO::Handle;
-use Fcntl qw(:DEFAULT SEEK_SET);
+use Fcntl qw(SEEK_SET);
sub new {
my ($class) = @_;
sub spamcheck {
my ($self, $msg, $out) = @_;
- my $tmp;
- my $fd = _msg_to_fd($self, $msg, \$tmp);
- my $rdr = { 0 => $fd };
+ my $rdr = { 0 => _msg_to_fh($self, $msg) };
my ($fh, $pid) = popen_rd($self->{checkcmd}, undef, $rdr);
- defined $pid or die "failed to popen_rd spamc: $!\n";
- my $r;
unless (ref $out) {
my $buf = '';
$out = \$buf;
}
-again:
- do {
- $r = sysread($fh, $$out, 65536, length($$out));
- } while (defined($r) && $r != 0);
- unless (defined $r) {
- goto again if $!{EINTR};
- die "read failed: $!";
- }
+ $$out = do { local $/; <$fh> };
close $fh or die "close failed: $!";
waitpid($pid, 0);
($? || $$out eq '') ? 0 : 1;
sub _learn {
my ($self, $msg, $rdr, $field) = @_;
$rdr ||= {};
+ $rdr->{0} = _msg_to_fh($self, $msg);
$rdr->{1} ||= $self->_devnull;
$rdr->{2} ||= $self->_devnull;
- my $tmp;
- $rdr->{0} = _msg_to_fd($self, $msg, \$tmp);
my $pid = spawn($self->{$field}, undef, $rdr);
waitpid($pid, 0);
!$?;
sub _devnull {
my ($self) = @_;
- my $fd = $self->{-devnullfd};
- return $fd if defined $fd;
- open my $fh, '+>', '/dev/null' or
+ $self->{-devnull} //= do {
+ open my $fh, '+>', '/dev/null' or
die "failed to open /dev/null: $!";
- $self->{-devnull} = $fh;
- $self->{-devnullfd} = fileno($fh);
+ $fh
+ }
}
-sub _msg_to_fd {
- my ($self, $msg, $tmpref) = @_;
- my $fd;
+sub _msg_to_fh {
+ my ($self, $msg) = @_;
if (my $ref = ref($msg)) {
- my $fileno = eval { fileno($msg) };
- return $fileno if defined $fileno;
+ my $fd = eval { fileno($msg) };
+ return $msg if defined($fd) && $fd >= 0;
open(my $tmpfh, '+>', undef) or die "failed to open: $!";
$tmpfh->autoflush(1);
print $tmpfh $$msg or die "failed to print: $!";
sysseek($tmpfh, 0, SEEK_SET) or
die "sysseek(fh) failed: $!";
- $$tmpref = $tmpfh;
- return fileno($tmpfh);
+ return $tmpfh;
}
$msg;
}