# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
# This Source Code Form is "Incompatible With Secondary Licenses", as
# defined by the Mozilla Public License, v. 2.0.

package Bugzilla::Sender::Transport::Sendmail;

use 5.10.1;
use strict;
use warnings;

use parent qw(Email::Sender::Transport::Sendmail);

use Email::Sender::Failure;

sub send_email {
  my ($self, $email, $envelope) = @_;

  my $pipe = $self->_sendmail_pipe($envelope);

  my $string = $email->as_string;
  $string =~ s/\x0D\x0A/\x0A/g unless $^O eq 'MSWin32';

  print $pipe $string
    or Email::Sender::Failure->throw("couldn't send message to sendmail: $!");

  unless (close $pipe) {
    Email::Sender::Failure->throw("error when closing pipe to sendmail: $!") if $!;
    my ($error_message, $is_transient) = _map_exitcode($? >> 8);
    if (Bugzilla->get_param_with_override('use_mailer_queue')) {

      # Return success for errors which are fatal so Bugzilla knows to
      # remove them from the queue
      if ($is_transient) {
        Email::Sender::Failure->throw(
          "error when closing pipe to sendmail: $error_message");
      }
      else {
        warn "error when closing pipe to sendmail: $error_message\n";
        return $self->success;
      }
    }
    else {
      Email::Sender::Failure->throw(
        "error when closing pipe to sendmail: $error_message");
    }
  }
  return $self->success;
}

sub _map_exitcode {

  # Returns (error message, is_transient)
  # from the sendmail source (sendmail/sysexits.h)
  my $code = shift;
  if ($code == 64) {
    return ("Command line usage error (EX_USAGE)", 1);
  }
  elsif ($code == 65) {
    return ("Data format error (EX_DATAERR)", 1);
  }
  elsif ($code == 66) {
    return ("Cannot open input (EX_NOINPUT)", 1);
  }
  elsif ($code == 67) {
    return ("Addressee unknown (EX_NOUSER)", 0);
  }
  elsif ($code == 68) {
    return ("Host name unknown (EX_NOHOST)", 0);
  }
  elsif ($code == 69) {
    return ("Service unavailable (EX_UNAVAILABLE)", 1);
  }
  elsif ($code == 70) {
    return ("Internal software error (EX_SOFTWARE)", 1);
  }
  elsif ($code == 71) {
    return ("System error (EX_OSERR)", 1);
  }
  elsif ($code == 72) {
    return ("Critical OS file missing (EX_OSFILE)", 1);
  }
  elsif ($code == 73) {
    return ("Can't create output file (EX_CANTCREAT)", 1);
  }
  elsif ($code == 74) {
    return ("Input/output error (EX_IOERR)", 1);
  }
  elsif ($code == 75) {
    return ("Temp failure (EX_TEMPFAIL)", 1);
  }
  elsif ($code == 76) {
    return ("Remote error in protocol (EX_PROTOCOL)", 1);
  }
  elsif ($code == 77) {
    return ("Permission denied (EX_NOPERM)", 1);
  }
  elsif ($code == 78) {
    return ("Configuration error (EX_CONFIG)", 1);
  }
  else {
    return ("Unknown Error ($code)", 1);
  }
}

1;

=head1 B<Methods in need of POD>

=over

=item send_email

=back
