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Make sure we process all servers after select()

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git-svn-id: https://svn.perl.org/qpsmtpd/trunk@466 958fd67b-6ff1-0310-b445-bb7760255be9
This commit is contained in:
Matt Sergeant 2005-07-06 12:13:53 +00:00
parent 1e68345cf2
commit 3fc6a4f318
1 changed files with 72 additions and 72 deletions
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144
qpsmtpd-forkserver
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@ -159,81 +159,81 @@ while (1) {
} }
my @ready = $select->can_read(1); my @ready = $select->can_read(1);
next if !@ready; next if !@ready;
my $server = shift @ready; while (my $server = shift @ready) {
my ($client, $hisaddr) = $server->accept;
my ($client, $hisaddr) = $server->accept;
if (!$hisaddr) {
if (!$hisaddr) { # possible something condition...
# possible something condition...
next;
}
IO::Handle::blocking($client, 1);
my ($port, $iaddr) = sockaddr_in($hisaddr);
if ($MAXCONNIP) {
my $num_conn = 1; # seed with current value
foreach my $rip (values %childstatus) {
++$num_conn if (defined $rip && $rip eq $iaddr);
}
if ($num_conn > $MAXCONNIP) {
my $rem_ip = inet_ntoa($iaddr);
::log(LOGINFO,"Too many connections from $rem_ip: "
."$num_conn > $MAXCONNIP. Denying connection.");
$client->autoflush(1);
print $client "451 Sorry, too many connections from $rem_ip, try again later\r\n";
close $client;
next; next;
} }
IO::Handle::blocking($client, 1);
my ($port, $iaddr) = sockaddr_in($hisaddr);
if ($MAXCONNIP) {
my $num_conn = 1; # seed with current value
foreach my $rip (values %childstatus) {
++$num_conn if (defined $rip && $rip eq $iaddr);
}
if ($num_conn > $MAXCONNIP) {
my $rem_ip = inet_ntoa($iaddr);
::log(LOGINFO,"Too many connections from $rem_ip: "
."$num_conn > $MAXCONNIP. Denying connection.");
$client->autoflush(1);
print $client "451 Sorry, too many connections from $rem_ip, try again later\r\n";
close $client;
next;
}
}
my $pid = safe_fork();
if ($pid) {
# parent
$childstatus{$pid} = $iaddr; # add to table
# $childstatus{$pid} = 1; # add to table
$running++;
close($client);
next;
}
# otherwise child
# all children should have different seeds, to prevent conflicts
srand( time ^ ($$ + ($$ << 15)) );
close($server);
$SIG{$_} = 'DEFAULT' for keys %SIG;
$SIG{ALRM} = sub {
print $client "421 Connection Timed Out\n";
::log(LOGINFO, "Connection Timed Out");
exit; };
my $localsockaddr = getsockname($client);
my ($lport, $laddr) = sockaddr_in($localsockaddr);
$ENV{TCPLOCALIP} = inet_ntoa($laddr);
# my ($port, $iaddr) = sockaddr_in($hisaddr);
$ENV{TCPREMOTEIP} = inet_ntoa($iaddr);
$ENV{TCPREMOTEHOST} = gethostbyaddr($iaddr, AF_INET) || "Unknown";
# don't do this!
#$0 = "qpsmtpd-forkserver: $ENV{TCPREMOTEIP} / $ENV{TCPREMOTEHOST}";
::log(LOGINFO, "Accepted connection $running/$MAXCONN from $ENV{TCPREMOTEIP} / $ENV{TCPREMOTEHOST}");
# dup to STDIN/STDOUT
POSIX::dup2(fileno($client), 0);
POSIX::dup2(fileno($client), 1);
$qpsmtpd->start_connection
(
local_ip => $ENV{TCPLOCALIP},
local_port => $lport,
remote_ip => $ENV{TCPREMOTEIP},
remote_port => $port,
);
$qpsmtpd->run();
exit; # child leaves
} }
my $pid = safe_fork();
if ($pid) {
# parent
$childstatus{$pid} = $iaddr; # add to table
# $childstatus{$pid} = 1; # add to table
$running++;
close($client);
next;
}
# otherwise child
# all children should have different seeds, to prevent conflicts
srand( time ^ ($$ + ($$ << 15)) );
close($server);
$SIG{$_} = 'DEFAULT' for keys %SIG;
$SIG{ALRM} = sub {
print $client "421 Connection Timed Out\n";
::log(LOGINFO, "Connection Timed Out");
exit; };
my $localsockaddr = getsockname($client);
my ($lport, $laddr) = sockaddr_in($localsockaddr);
$ENV{TCPLOCALIP} = inet_ntoa($laddr);
# my ($port, $iaddr) = sockaddr_in($hisaddr);
$ENV{TCPREMOTEIP} = inet_ntoa($iaddr);
$ENV{TCPREMOTEHOST} = gethostbyaddr($iaddr, AF_INET) || "Unknown";
# don't do this!
#$0 = "qpsmtpd-forkserver: $ENV{TCPREMOTEIP} / $ENV{TCPREMOTEHOST}";
::log(LOGINFO, "Accepted connection $running/$MAXCONN from $ENV{TCPREMOTEIP} / $ENV{TCPREMOTEHOST}");
# dup to STDIN/STDOUT
POSIX::dup2(fileno($client), 0);
POSIX::dup2(fileno($client), 1);
$qpsmtpd->start_connection
(
local_ip => $ENV{TCPLOCALIP},
local_port => $lport,
remote_ip => $ENV{TCPREMOTEIP},
remote_port => $port,
);
$qpsmtpd->run();
exit; # child leaves
} }
sub log { sub log {