version 1.105, 2003/01/13 21:52:11
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version 1.106, 2003/01/15 04:43:14
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Line 54
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Line 54
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# 02/19 Matthew Hall |
# 02/19 Matthew Hall |
# 02/25 Gerd Kortemeyer |
# 02/25 Gerd Kortemeyer |
# 05/11 Scott Harrison |
# 05/11 Scott Harrison |
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# 01/xx/2003 Ron Fox.. Remove preforking. This makes the general daemon |
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# logic simpler (and there were problems maintaining the preforked |
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# population). Since the time averaged connection rate is close to zero |
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# because lonc's purpose is to maintain near continuous connnections, |
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# preforking is not really needed. |
### |
### |
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# based on "Perl Cookbook" ISBN 1-56592-243-3 |
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# preforker - server who forks first |
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# runs as a daemon |
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# HUPs |
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# uses IDEA encryption |
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use lib '/home/httpd/lib/perl/'; |
use lib '/home/httpd/lib/perl/'; |
use LONCAPA::Configuration; |
use LONCAPA::Configuration; |
Line 491 close(PIDSAVE);
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Line 491 close(PIDSAVE);
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&logthis("<font color=red>CRITICAL: ---------- Starting ----------</font>"); |
&logthis("<font color=red>CRITICAL: ---------- Starting ----------</font>"); |
&status('Starting'); |
&status('Starting'); |
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# ------------------------------------------------------- Now we are on our own |
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# Fork off our children. |
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for (1 .. $PREFORK) { |
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make_new_child(); |
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} |
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# ----------------------------------------------------- Install signal handlers |
# ----------------------------------------------------- Install signal handlers |
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&status('Forked children'); |
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$SIG{CHLD} = \&REAPER; |
$SIG{CHLD} = \&REAPER; |
$SIG{INT} = $SIG{TERM} = \&HUNTSMAN; |
$SIG{INT} = $SIG{TERM} = \&HUNTSMAN; |
$SIG{HUP} = \&HUPSMAN; |
$SIG{HUP} = \&HUPSMAN; |
$SIG{USR1} = \&checkchildren; |
$SIG{USR1} = \&checkchildren; |
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# And maintain the population. |
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# -------------------------------------------------------------- |
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# Accept connections. When a connection comes in, it is validated |
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# and if good, a child process is created to process transactions |
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# along the connection. |
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while (1) { |
while (1) { |
&status('Sleeping'); |
$client = $server->accept() or next; |
sleep; # wait for a signal (i.e., child's death) |
make_new_child($client); |
&logthis('Woke up'); |
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&status('Woke up'); |
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for ($i = $children; $i < $PREFORK; $i++) { |
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make_new_child(); # top up the child pool |
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} |
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} |
} |
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sub make_new_child { |
sub make_new_child { |
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my $client; |
my $pid; |
my $pid; |
my $cipher; |
my $cipher; |
my $sigset; |
my $sigset; |
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$client = shift; |
&logthis("Attempting to start child"); |
&logthis("Attempting to start child"); |
# block signal for fork |
# block signal for fork |
$sigset = POSIX::SigSet->new(SIGINT); |
$sigset = POSIX::SigSet->new(SIGINT); |
Line 555 sub make_new_child {
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Line 553 sub make_new_child {
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&Authen::Krb5::init_context(); |
&Authen::Krb5::init_context(); |
&Authen::Krb5::init_ets(); |
&Authen::Krb5::init_ets(); |
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# handle connections until we've reached $MAX_CLIENTS_PER_CHILD |
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for ($i=0; $i < $MAX_CLIENTS_PER_CHILD; $i++) { |
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&status('Idle, waiting for connection'); |
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$client = $server->accept() or last; |
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&status('Accepted connection'); |
&status('Accepted connection'); |
# ============================================================================= |
# ============================================================================= |
# do something with the connection |
# do something with the connection |
Line 566 sub make_new_child {
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Line 560 sub make_new_child {
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$client->sockopt(SO_KEEPALIVE, 1);# Enable monitoring of |
$client->sockopt(SO_KEEPALIVE, 1);# Enable monitoring of |
# connection liveness. |
# connection liveness. |
# see if we know client and check for spoof IP by challenge |
# see if we know client and check for spoof IP by challenge |
my $caller=getpeername($client); |
my $caller = getpeername($client); |
my ($port,$iaddr)=unpack_sockaddr_in($caller); |
my ($port,$iaddr)=unpack_sockaddr_in($caller); |
my $clientip=inet_ntoa($iaddr); |
my $clientip=inet_ntoa($iaddr); |
my $clientrec=($hostid{$clientip} ne undef); |
my $clientrec=($hostid{$clientip} ne undef); |
Line 1546 sub make_new_child {
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Line 1540 sub make_new_child {
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&logthis("<font color=blue>WARNING: " |
&logthis("<font color=blue>WARNING: " |
."Rejected client $clientip, closing connection</font>"); |
."Rejected client $clientip, closing connection</font>"); |
} |
} |
} |
} |
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# ============================================================================= |
# ============================================================================= |
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&logthis("<font color=red>CRITICAL: " |
&logthis("<font color=red>CRITICAL: " |
."Disconnect from $clientip ($hostid{$clientip})</font>"); |
."Disconnect from $clientip ($hostid{$clientip})</font>"); |
# tidy up gracefully and finish |
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$server->close(); |
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# this exit is VERY important, otherwise the child will become |
# this exit is VERY important, otherwise the child will become |
# a producer of more and more children, forking yourself into |
# a producer of more and more children, forking yourself into |
# process death. |
# process death. |
exit; |
exit; |
} |
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} |
} |
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