byterazor/qpsmtpd
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Implement listening on multiple local addresses simultaneously, if specified by

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more than one --listen-address commandline argument.


git-svn-id: https://svn.perl.org/qpsmtpd/trunk@464 958fd67b-6ff1-0310-b445-bb7760255be9
This commit is contained in:
Devin Carraway 2005-07-06 07:50:00 +00:00
parent 314625d05a
commit 1fbfe5156b
2 changed files with 36 additions and 17 deletions
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@ -1,5 +1,8 @@
0.31 -
qpsmtpd-forkserver: --listen-address may now be given more than once, to
request listening on multiple local addresses (Devin Carraway)
qpsmtpd-forkserver: add an option for writing a PID file (pjh)
qpsmtpd-forkserver: set auxiliary groups (this is needed for the

42
qpsmtpd-forkserver
View File

@ -20,7 +20,7 @@ $| = 1;
# Configuration
my $MAXCONN = 15; # max simultaneous connections
my $PORT = 2525; # port number
my $LOCALADDR = '0.0.0.0'; # ip address to bind to
my @LOCALADDR; # ip address to bind to
my $USER = 'smtpd'; # user to suid to
my $MAXCONNIP = 5; # max simultaneous connections from one IP
my $PID_FILE = '';
@ -28,7 +28,9 @@ my $PID_FILE = '';
sub usage {
print <<"EOT";
usage: qpsmtpd-forkserver [ options ]
-l, --listen-address addr : listen on a specific address; default 0.0.0.0
-l, --listen-address addr : listen on specific address(es); can be specified
multiple times for multiple bindings. Default is
0.0.0.0 (all interfaces).
-p, --port P : listen on a specific port; default 2525
-c, --limit-connections N : limit concurrent connections to N; default 15
-u, --user U : run as a particular user (default 'smtpd')
@ -39,7 +41,7 @@ EOT
}
GetOptions('h|help' => \&usage,
'l|listen-address=s' => \$LOCALADDR,
'l|listen-address=s' => \@LOCALADDR,
'c|limit-connections=i' => \$MAXCONN,
'm|max-from-ip=i' => \$MAXCONNIP,
'p|port=i' => \$PORT,
@ -49,7 +51,14 @@ GetOptions('h|help' => \&usage,
# detaint the commandline
if ($PORT =~ /^(\d+)$/) { $PORT = $1 } else { &usage }
if ($LOCALADDR =~ /^([\d\w\-.]+)$/) { $LOCALADDR = $1 } else { &usage }
@LOCALADDR = ( '0.0.0.0' ) if !@LOCALADDR;
for (0..$#LOCALADDR) {
if ($LOCALADDR[$_] =~ /^([\d\w\-.]+)$/) {
$LOCALADDR[$_] = $1;
} else {
&usage;
}
}
if ($USER =~ /^([\w\-]+)$/) { $USER = $1 } else { &usage }
if ($MAXCONN =~ /^(\d+)$/) { $MAXCONN = $1 } else { &usage }
@ -75,17 +84,20 @@ sub HUNTSMAN {
$SIG{INT} = \&HUNTSMAN;
$SIG{TERM} = \&HUNTSMAN;
# establish SERVER socket, bind and listen.
my $server = IO::Socket::INET->new(LocalPort => $PORT,
LocalAddr => $LOCALADDR,
my $select = new IO::Select;
# establish SERVER socket(s), bind and listen.
for my $listen_addr (@LOCALADDR) {
my $server = IO::Socket::INET->new(LocalPort => $PORT,
LocalAddr => $listen_addr,
Proto => 'tcp',
Reuse => 1,
Blocking => 0,
Listen => SOMAXCONN )
or die "Creating TCP socket $LOCALADDR:$PORT: $!\n";
IO::Handle::blocking($server, 0);
my $sel = IO::Select->new();
$sel->add($server);
or die "Creating TCP socket $listen_addr:$PORT: $!\n";
IO::Handle::blocking($server, 0);
$select->add($server);
}
if ($PID_FILE) {
if ($PID_FILE =~ m#^(/[\w\d/\-.]+)$#) { $PID_FILE = $1 } else { &usage }
@ -145,8 +157,12 @@ while (1) {
sleep(1);
next;
}
next unless $sel->can_read(1);
my $hisaddr = accept(my $client, $server);
my @ready = $select->can_read(1);
next if !@ready;
my $server = shift @ready;
my ($client, $hisaddr) = $server->accept;
if (!$hisaddr) {
# possible something condition...
next;