version 1.17, 2003/11/04 11:22:48
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version 1.30, 2004/06/01 10:05:16
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Line 67 sub ReadConfig {
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Line 67 sub ReadConfig {
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my $perlvarref = read_conf('loncapa.conf'); |
my $perlvarref = read_conf('loncapa.conf'); |
%perlvar = %{$perlvarref}; |
%perlvar = %{$perlvarref}; |
my $hoststab = read_hosts( |
my $hoststab = read_hosts( |
"$perlvar{'lonTabDir'}/hosts.tab") || |
"$perlvar{lonTabDir}/hosts.tab") || |
die "Can't read host table!!"; |
die "Can't read host table!!"; |
%hostshash = %{$hoststab}; |
%hostshash = %{$hoststab}; |
$ConfigRead = 1; |
$ConfigRead = 1; |
Line 89 sub ReadConfig {
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Line 89 sub ReadConfig {
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# to build up the hosts table. |
# to build up the hosts table. |
# |
# |
sub ReadForeignConfig { |
sub ReadForeignConfig { |
my $MyHost = shift; |
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my $Filename = shift; |
my ($MyHost, $Filename) = @_; |
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&Debug(4, "ReadForeignConfig $MyHost $Filename\n"); |
&Debug(4, "ReadForeignConfig $MyHost $Filename\n"); |
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Line 108 sub ReadForeignConfig {
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Line 108 sub ReadForeignConfig {
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} |
} |
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sub Debug { |
sub Debug { |
my $level = shift; |
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my $message = shift; |
my ($level, $message) = @_; |
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if ($level < $DebugLevel) { |
if ($level < $DebugLevel) { |
print($message."\n"); |
print($message."\n"); |
} |
} |
Line 127 sub Dump {
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Line 128 sub Dump {
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my $self = shift; |
my $self = shift; |
my $key; |
my $key; |
my $value; |
my $value; |
print "Dumping LondConnectionObject:\n"; |
print STDERR "Dumping LondConnectionObject:\n"; |
while(($key, $value) = each %$self) { |
while(($key, $value) = each %$self) { |
print STDERR "$key -> $value\n"; |
print STDERR "$key -> $value\n"; |
} |
} |
print "-------------------------------\n"; |
print STDERR "-------------------------------\n"; |
} |
} |
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=pod |
=pod |
Line 143 old state.
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Line 144 old state.
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=cut |
=cut |
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sub Transition { |
sub Transition { |
my $self = shift; |
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my $newstate = shift; |
my ($self, $newstate) = @_; |
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my $oldstate = $self->{State}; |
my $oldstate = $self->{State}; |
$self->{State} = $newstate; |
$self->{State} = $newstate; |
$self->{TimeoutRemaining} = $self->{TimeoutValue}; |
$self->{TimeoutRemaining} = $self->{TimeoutValue}; |
Line 174 host the remote lond is on. This host is
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Line 176 host the remote lond is on. This host is
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=cut |
=cut |
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sub new { |
sub new { |
my $class = shift; # class name. |
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my $Hostname = shift; # Name of host to connect to. |
my ($class, $Hostname, $Port) = @_; |
my $Port = shift; # Port to connect |
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if (!$ConfigRead) { |
if (!$ConfigRead) { |
ReadConfig(); |
ReadConfig(); |
Line 199 sub new {
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Line 200 sub new {
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Debug(5, "Connecting to ".$DnsName); |
Debug(5, "Connecting to ".$DnsName); |
# Now create the object... |
# Now create the object... |
my $self = { Host => $DnsName, |
my $self = { Host => $DnsName, |
LoncapaHim => $Hostname, |
LoncapaHim => $Hostname, |
Port => $Port, |
Port => $Port, |
State => "Initialized", |
State => "Initialized", |
TransactionRequest => "", |
TransactionRequest => "", |
TransactionReply => "", |
TransactionReply => "", |
InformReadable => 0, |
InformReadable => 0, |
InformWritable => 0, |
InformWritable => 0, |
TimeoutCallback => undef, |
TimeoutCallback => undef, |
TransitionCallback => undef, |
TransitionCallback => undef, |
Timeoutable => 0, |
Timeoutable => 0, |
TimeoutValue => 30, |
TimeoutValue => 30, |
TimeoutRemaining => 0, |
TimeoutRemaining => 0, |
CipherKey => "", |
CipherKey => "", |
Cipher => undef}; |
LondVersion => "Unknown", |
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Cipher => undef}; |
bless($self, $class); |
bless($self, $class); |
unless ($self->{Socket} = IO::Socket::INET->new(PeerHost => $self->{Host}, |
unless ($self->{Socket} = IO::Socket::INET->new(PeerHost => $self->{Host}, |
PeerPort => $self->{Port}, |
PeerPort => $self->{Port}, |
Line 278 sub Readable {
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Line 280 sub Readable {
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my $self = shift; |
my $self = shift; |
my $socket = $self->{Socket}; |
my $socket = $self->{Socket}; |
my $data = ''; |
my $data = ''; |
my $rv = $socket->recv($data, POSIX::BUFSIZ, 0); |
my $rv; |
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if ($socket) { |
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eval { |
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$rv = $socket->recv($data, POSIX::BUFSIZ, 0); |
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} |
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} else { |
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$self->Transition("Disconnected"); |
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return -1; |
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} |
my $errno = $! + 0; # Force numeric context. |
my $errno = $! + 0; # Force numeric context. |
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unless (defined($rv) && length $data) {# Read failed, |
unless (defined($rv) && length $data) {# Read failed, |
Line 299 sub Readable {
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Line 309 sub Readable {
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&Debug(9,"Received from host: ".$data); |
&Debug(9,"Received from host: ".$data); |
$self->{TransactionReply} .= $data; |
$self->{TransactionReply} .= $data; |
if($self->{TransactionReply} =~ /(.*\n)/) { |
if($self->{TransactionReply} =~ m/\n$/) { |
&Debug(8,"Readable End of line detected"); |
&Debug(8,"Readable End of line detected"); |
if ($self->{State} eq "Initialized") { # We received the challenge: |
if ($self->{State} eq "Initialized") { # We received the challenge: |
if($self->{TransactionReply} eq "refused\n") { # Remote doesn't have |
if($self->{TransactionReply} eq "refused\n") { # Remote doesn't have |
Line 316 sub Readable {
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Line 326 sub Readable {
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$self->Transition("ChallengeReceived"); |
$self->Transition("ChallengeReceived"); |
$self->{TimeoutRemaining} = $self->{TimeoutValue}; |
$self->{TimeoutRemaining} = $self->{TimeoutValue}; |
return 0; |
return 0; |
} elsif ($self->{State} eq "ChallengeReplied") { # should be ok. |
} elsif ($self->{State} eq "ChallengeReplied") { |
if($self->{TransactionReply} != "ok\n") { |
if($self->{TransactionReply} ne "ok\n") { |
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$self->Transition("Disconnected"); |
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$socket->close(); |
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return -1; |
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} |
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$self->Transition("RequestingVersion"); |
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$self->{InformReadable} = 0; |
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$self->{InformWritable} = 1; |
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$self->{TransactionRequest} = "version\n"; |
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return 0; |
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} elsif ($self->{State} eq "ReadingVersionString") { |
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$self->{LondVersion} = chomp($self->{TransactionReply}); |
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$self->Transition("SetHost"); |
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$self->{InformReadable} = 0; |
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$self->{InformWritable} = 1; |
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my $peer = $self->{LoncapaHim}; |
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$self->{TransactionRequest}= "sethost:$peer\n"; |
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return 0; |
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} elsif ($self->{State} eq "HostSet") { # should be ok. |
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if($self->{TransactionReply} ne "ok\n") { |
$self->Transition("Disconnected"); |
$self->Transition("Disconnected"); |
$socket->close(); |
$socket->close(); |
return -1; |
return -1; |
Line 393 Returns 0 if successful, or -1 if not.
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Line 422 Returns 0 if successful, or -1 if not.
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sub Writable { |
sub Writable { |
my $self = shift; # Get reference to the object. |
my $self = shift; # Get reference to the object. |
my $socket = $self->{Socket}; |
my $socket = $self->{Socket}; |
my $nwritten = $socket->send($self->{TransactionRequest}, 0); |
my $nwritten; |
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if ($socket) { |
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eval { |
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$nwritten = $socket->send($self->{TransactionRequest}, 0); |
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} |
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} else { |
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# For whatever reason, there's no longer a socket left. |
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$self->Transition("Disconnected"); |
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return -1; |
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} |
my $errno = $! + 0; |
my $errno = $! + 0; |
unless (defined $nwritten) { |
unless (defined $nwritten) { |
if($errno != POSIX::EINTR) { |
if($errno != POSIX::EINTR) { |
Line 408 sub Writable {
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Line 448 sub Writable {
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($errno == POSIX::EINTR) || |
($errno == POSIX::EINTR) || |
($errno == 0)) { |
($errno == 0)) { |
substr($self->{TransactionRequest}, 0, $nwritten) = ""; # rmv written part |
substr($self->{TransactionRequest}, 0, $nwritten) = ""; # rmv written part |
if(length $self->{TransactionRequest} == 0) { |
if(length $self->{TransactionRequest} == 0) { |
$self->{InformWritable} = 0; |
$self->{InformWritable} = 0; |
$self->{InformReadable} = 1; |
$self->{InformReadable} = 1; |
$self->{TransactionReply} = ''; |
$self->{TransactionReply} = ''; |
# |
# |
# Figure out the next state: |
# Figure out the next state: |
# |
# |
if($self->{State} eq "Connected") { |
if($self->{State} eq "Connected") { |
$self->Transition("Initialized"); |
$self->Transition("Initialized"); |
} elsif($self->{State} eq "ChallengeReceived") { |
} elsif($self->{State} eq "ChallengeReceived") { |
$self->Transition("ChallengeReplied"); |
$self->Transition("ChallengeReplied"); |
} elsif($self->{State} eq "RequestingKey") { |
} elsif($self->{State} eq "RequestingVersion") { |
$self->Transition("ReceivingKey"); |
$self->Transition("ReadingVersionString"); |
$self->{InformWritable} = 0; |
} elsif ($self->{State} eq "SetHost") { |
$self->{InformReadable} = 1; |
$self->Transition("HostSet"); |
$self->{TransactionReply} = ''; |
} elsif($self->{State} eq "RequestingKey") { |
} elsif ($self->{State} eq "SendingRequest") { |
$self->Transition("ReceivingKey"); |
$self->Transition("ReceivingReply"); |
# $self->{InformWritable} = 0; |
$self->{TimeoutRemaining} = $self->{TimeoutValue}; |
# $self->{InformReadable} = 1; |
} elsif ($self->{State} eq "Disconnected") { |
# $self->{TransactionReply} = ''; |
return -1; |
} elsif ($self->{State} eq "SendingRequest") { |
} |
$self->Transition("ReceivingReply"); |
return 0; |
$self->{TimeoutRemaining} = $self->{TimeoutValue}; |
} |
} elsif ($self->{State} eq "Disconnected") { |
} else { # The write failed (e.g. partner disconnected). |
return -1; |
$self->Transition("Disconnected"); |
} |
$socket->close(); |
return 0; |
return -1; |
} |
} |
} else { # The write failed (e.g. partner disconnected). |
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$self->Transition("Disconnected"); |
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$socket->close(); |
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return -1; |
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} |
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} |
} |
=pod |
=pod |
Line 492 timout, and to request writability notif
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Line 536 timout, and to request writability notif
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=cut |
=cut |
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sub InitiateTransaction { |
sub InitiateTransaction { |
my $self = shift; |
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my $data = shift; |
my ($self, $data) = @_; |
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Debug(1, "initiating transaction: ".$data); |
Debug(1, "initiating transaction: ".$data); |
if($self->{State} ne "Idle") { |
if($self->{State} ne "Idle") { |
Line 544 established callback or undef if there w
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Line 588 established callback or undef if there w
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=cut |
=cut |
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sub SetTimeoutCallback { |
sub SetTimeoutCallback { |
my $self = shift; |
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my $callback = shift; |
my ($self, $callback) = @_; |
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my $oldCallback = $self->{TimeoutCallback}; |
my $oldCallback = $self->{TimeoutCallback}; |
$self->{TimeoutCallback} = $callback; |
$self->{TimeoutCallback} = $callback; |
return $oldCallback; |
return $oldCallback; |
Line 562 Shuts down the socket.
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Line 607 Shuts down the socket.
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sub Shutdown { |
sub Shutdown { |
my $self = shift; |
my $self = shift; |
my $socket = $self->GetSocket(); |
my $socket = $self->GetSocket(); |
$socket->shutdown(2); |
Debug(5,"socket is -$socket-"); |
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if ($socket) { |
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# Ask lond to exit too. Non blocking so |
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# there is no cost for failure. |
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eval { |
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$socket->send("exit\n", 0); |
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$socket->shutdown(2); |
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} |
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} |
} |
} |
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=pod |
=pod |
Line 665 The output string can be directly sent t
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Line 718 The output string can be directly sent t
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=cut |
=cut |
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sub Encrypt { |
sub Encrypt { |
my $self = shift; # Reference to the object. |
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my $request = shift; # Text to send. |
my ($self, $request) = @_; |
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# Split the encrypt: off the request and figure out it's length. |
# Split the encrypt: off the request and figure out it's length. |
Line 708 Decrypt a response from the server. The
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Line 761 Decrypt a response from the server. The
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=cut |
=cut |
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sub Decrypt { |
sub Decrypt { |
my $self = shift; # Recover reference to object |
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my $encrypted = shift; # This is the encrypted data. |
my ($self, $encrypted) = @_; |
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# Bust up the response into length, and encryptedstring: |
# Bust up the response into length, and encryptedstring: |
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Line 784 sub read_conf
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Line 837 sub read_conf
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my %perlvar; |
my %perlvar; |
foreach my $filename (@conf_files,'loncapa_apache.conf') |
foreach my $filename (@conf_files,'loncapa_apache.conf') |
{ |
{ |
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if($DebugLevel > 3) { |
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print("Going to read $confdir.$filename\n"); |
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} |
open(CONFIG,'<'.$confdir.$filename) or |
open(CONFIG,'<'.$confdir.$filename) or |
die("Can't read $confdir$filename"); |
die("Can't read $confdir$filename"); |
while (my $configline=<CONFIG>) |
while (my $configline=<CONFIG>) |
Line 797 sub read_conf
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Line 853 sub read_conf
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} |
} |
close(CONFIG); |
close(CONFIG); |
} |
} |
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if($DebugLevel > 3) { |
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print "Dumping perlvar:\n"; |
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foreach my $var (keys %perlvar) { |
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print "$var = $perlvar{$var}\n"; |
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} |
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} |
my $perlvarref=\%perlvar; |
my $perlvarref=\%perlvar; |
return ($perlvarref); |
return $perlvarref; |
} |
} |
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#---------------------- Subroutine read_hosts: Read a LON-CAPA hosts.tab |
#---------------------- Subroutine read_hosts: Read a LON-CAPA hosts.tab |
# formatted configuration file. |
# formatted configuration file. |
Line 839 sub read_hosts {
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Line 901 sub read_hosts {
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my $hostref = \%HostsTab; |
my $hostref = \%HostsTab; |
return ($hostref); |
return ($hostref); |
} |
} |
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# |
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# Get the version of our peer. Note that this is only well |
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# defined if the state machine has hit the idle state at least |
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# once (well actually if it has transitioned out of |
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# ReadingVersionString The member data LondVersion is returned. |
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# |
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sub PeerVersion { |
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my $self = shift; |
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return $self->{LondVersion}; |
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} |
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1; |
1; |
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