[2748] | 1 | #!/usr/bin/perl |
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| 2 | |
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| 3 | use Sendmail::Milter; |
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| 4 | |
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| 5 | my %my_milter_callbacks = ( |
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| 6 | 'eom' => \&my_eom_callback, |
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| 7 | ); |
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| 8 | |
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| 9 | sub find_uid { |
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| 10 | my ($addr, $port) = @_; |
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| 11 | my $file; |
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| 12 | my $search; |
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| 13 | # TODO(quentin): These search strings are probably arch-specific. |
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| 14 | if ($addr eq "::1") { |
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| 15 | $file = "/proc/net/tcp6"; |
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| 16 | $search = sprintf("00000000000000000000000001000000:%04X", $port); |
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| 17 | } elsif ($addr eq "127.0.0.1") { |
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| 18 | $file = "/proc/net/tcp"; |
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| 19 | $search = sprintf("0100007F:%04X", $port); |
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| 20 | } else { |
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| 21 | return undef; |
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| 22 | } |
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| 23 | my $fh = IO::File->new($file, "r") or die "Cannot read $file: $!"; |
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| 24 | <$fh>; # Eat header |
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| 25 | while (my $line = <$fh>) { |
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| 26 | my @parts = split(" ", $line); |
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| 27 | if ($parts[1] eq $search) { |
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| 28 | return $parts[7]; |
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| 29 | } |
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| 30 | } |
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| 31 | return undef; # Not found. |
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| 32 | } |
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| 33 | |
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| 34 | sub my_eom_callback { |
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| 35 | my ($ctx) = @_; |
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| 36 | |
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| 37 | my $queueid = $ctx->getsymval('i'); |
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| 38 | |
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| 39 | my $addr = $ctx->getsymval('{client_addr}'); |
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| 40 | my $port = $ctx->getsymval('{client_port}'); |
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| 41 | |
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| 42 | my $uid = find_uid($addr, $port); |
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| 43 | |
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| 44 | printf STDERR "Received message from %s:%s (uid %d) (queue ID %s)\n", $addr, $port, $uid, $queueid; |
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| 45 | |
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| 46 | return SMFIS_ACCEPT; |
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| 47 | } |
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| 48 | |
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| 49 | Sendmail::Milter::setconn("local:/var/run/scripts-milter.sock"); |
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| 50 | Sendmail::Milter::register("scripts", |
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| 51 | \%my_milter_callbacks, SMFI_CURR_ACTS); |
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| 52 | |
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| 53 | Sendmail::Milter::main(); |
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