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Diff for /loncom/LondConnection.pm between versions 1.43 and 1.44

version 1.43, 2006/09/15 20:49:24 version 1.44, 2007/03/28 20:28:29
Line 43  use LONCAPA::lonssl; Line 43  use LONCAPA::lonssl;
   
   
 my $DebugLevel=0;  my $DebugLevel=0;
 my %hostshash;  
 my %perlvar;  my %perlvar;
 my $LocalDns = ""; # Need not be defined for managers.  
 my $InsecureOk;  my $InsecureOk;
   
 #  #
Line 71  sub ReadConfig { Line 69  sub ReadConfig {
   
     my $perlvarref = read_conf('loncapa.conf');      my $perlvarref = read_conf('loncapa.conf');
     %perlvar    = %{$perlvarref};      %perlvar    = %{$perlvarref};
     my $hoststab   = read_hosts(  
  "$perlvar{lonTabDir}/hosts.tab") ||   
  die "Can't read host table!!";  
     %hostshash  = %{$hoststab};  
     $ConfigRead = 1;      $ConfigRead = 1;
           
     my $myLonCapaName = $perlvar{lonHostID};  
     Debug(8, "My loncapa name is $myLonCapaName");  
       
     if(defined $hostshash{$myLonCapaName}) {  
  Debug(8, "My loncapa name is in hosthash");  
  my @ConfigLine = @{$hostshash{$myLonCapaName}};  
  $LocalDns = $ConfigLine[3];  
  Debug(8, "Got local name $LocalDns");  
     }  
     $InsecureOk = $perlvar{loncAllowInsecure};      $InsecureOk = $perlvar{loncAllowInsecure};
       
     Debug(3, "ReadConfig - LocalDNS = $LocalDns");  
 }  
   
 #  
 #  Read a foreign configuration.  
 #  This sub is intended for the cases where the package  
 #  will be read from outside the LonCAPA environment, in that case  
 #  the client will need to explicitly provide:  
 #   - A file in hosts.tab format.  
 #   - Some idea of the 'lonCAPA' name of the local host (for building  
 #     the encryption key).  
 #  
 #  Parameters:  
 #      MyHost   - Name of this host as far as LonCAPA is concerned.  
 #      Filename - Name of a hosts.tab formatted file that will be used  
 #                 to build up the hosts table.  
 #  
 sub ReadForeignConfig {  
   
     my ($MyHost, $Filename) = @_;  
   
     &Debug(4, "ReadForeignConfig $MyHost $Filename\n");  
   
     $perlvar{lonHostID} = $MyHost; # Rmember my host.  
     my $hosttab = read_hosts($Filename) ||  
  die "Can't read hosts table!!";  
     %hostshash = %{$hosttab};  
     if($DebugLevel > 3) {  
  foreach my $host (keys %hostshash) {  
     print STDERR "host $host => $hostshash{$host}\n";  
  }  
     }  
     $ConfigRead = 1;  
   
     my $myLonCapaName = $perlvar{lonHostID};  
       
     if(defined $hostshash{$myLonCapaName}) {  
  my @ConfigLine = @{$hostshash{$myLonCapaName}};  
  $LocalDns = $ConfigLine[3];  
     }  
     $InsecureOk = $perlvar{loncAllowInsecure};  
       
     Debug(3, "ReadForeignConfig  - LocalDNS = $LocalDns");  
   
 }  }
   
 sub Debug {  sub Debug {
Line 213  host the remote lond is on. This host is Line 153  host the remote lond is on. This host is
 =cut  =cut
   
 sub new {  sub new {
     my ($class, $DnsName, $Port) = @_;      my ($class, $DnsName, $Port, $lonid) = @_;
   
     if (!$ConfigRead) {      if (!$ConfigRead) {
  ReadConfig();   ReadConfig();
Line 227  sub new { Line 167  sub new {
     #  negotion.  In the objec these become the Host and      #  negotion.  In the objec these become the Host and
     #  LoncapaHim fields of the object respectively.      #  LoncapaHim fields of the object respectively.
     #      #
     if (!exists $hostshash{$DnsName}) {  
  &Debug(8, "No Such host $DnsName");  
  return undef; # No such host!!!  
     }  
     my @ConfigLine = @{$hostshash{$DnsName}};  
     my $Hostname    = $ConfigLine[0]; # 0'th item is the msu id of host.  
     Debug(5, "Connecting to ".$DnsName);  
     # if it is me use loopback for connection      # if it is me use loopback for connection
     if ($DnsName eq $LocalDns) { $DnsName="127.0.0.1"; }      if ($DnsName eq &main::my_hostname()) { $DnsName="127.0.0.1"; }
     Debug(8, "Connecting to $DnsName I am $LocalDns");      Debug(9, "Connecting to $DnsName");
     # Now create the object...      # Now create the object...
     my $self     = { Host               => $DnsName,      my $self     = { Host               => $DnsName,
                      LoncapaHim         => $Hostname,                       LoncapaHim         => $lonid,
                      Port               => $Port,                       Port               => $Port,
                      State              => "Initialized",                       State              => "Initialized",
      AuthenticationMode => "",       AuthenticationMode => "",
Line 251  sub new { Line 184  sub new {
                      TimeoutCallback    => undef,                       TimeoutCallback    => undef,
                      TransitionCallback => undef,                       TransitionCallback => undef,
                      Timeoutable        => 0,                       Timeoutable        => 0,
                      TimeoutValue       => 30,                       TimeoutValue       => 3,
                      TimeoutRemaining   => 0,                       TimeoutRemaining   => 0,
      LocalKeyFile       => "",       LocalKeyFile       => "",
                      CipherKey          => "",                       CipherKey          => "",
Line 1136  sub CompleteInsecure { Line 1069  sub CompleteInsecure {
     }      }
 }  }
   
 =pod  
   
 =head2 GetHostIterator  
   
 Returns a hash iterator to the host information.  Each get from   
 this iterator returns a reference to an array that contains   
 information read from the hosts configuration file.  Array elements  
 are used as follows:  
   
  [0]   - LonCapa host id.  
  [1]   - LonCapa domain name.  
  [2]   - Loncapa role (e.g. library or access).  
  [3]   - DNS name server hostname.  
  [4]   - IP address (result of e.g. nslookup [3]).  
  [5]   - Maximum connection count.  
  [6]   - Idle timeout for reducing connection count.  
  [7]   - Minimum connection count.  
   
 =cut  
   
 sub GetHostIterator {  
   
     return HashIterator->new(\%hostshash);      
 }  
   
 ###########################################################  ###########################################################
 #  #
 #  The following is an unashamed kludge that is here to  #  The following is an unashamed kludge that is here to
Line 1217  sub read_conf Line 1125  sub read_conf
     return $perlvarref;      return $perlvarref;
 }  }
   
 #---------------------- Subroutine read_hosts: Read a LON-CAPA hosts.tab  
 # formatted configuration file.  
 #  
 my $RequiredCount = 4; # Required item count in hosts.tab.  
 my $DefaultMaxCon = 5; # Default value for maximum connections.  
 my $DefaultIdle   = 1000;       # Default connection idle time in seconds.  
 my $DefaultMinCon = 0;          # Default value for minimum connections.  
   
 sub read_hosts {  
     my $Filename = shift;  
     my %HostsTab;  
       
     open(CONFIG,'<'.$Filename) or die("Can't read $Filename");  
     while (my $line = <CONFIG>) {  
  if ($line !~ /^\s*\#/) {  
     $line=~s/\s*$//;  
     my @items = split(/:/, $line);  
     if(scalar @items >= $RequiredCount) {  
  if (scalar @items == $RequiredCount) { # Only required items:  
     $items[$RequiredCount] = $DefaultMaxCon;  
  }  
  if(scalar @items == $RequiredCount + 1) { # up through maxcon.  
     $items[$RequiredCount+1] = $DefaultIdle;  
  }  
  if(scalar @items == $RequiredCount + 2) { # up through idle.  
     $items[$RequiredCount+2] = $DefaultMinCon;  
  }  
  {  
     my @list = @items; # probably not needed but I'm unsure of   
     # about the scope of item so...  
     $HostsTab{$list[3]} = \@list;   
  }  
     }  
  }  
     }  
     close(CONFIG);  
     my $hostref = \%HostsTab;  
     return ($hostref);  
 }  
 #  #
 #   Get the version of our peer.  Note that this is only well  #   Get the version of our peer.  Note that this is only well
 #   defined if the state machine has hit the idle state at least  #   defined if the state machine has hit the idle state at least
Line 1461  true if the current state requires a wri Line 1330  true if the current state requires a wri
   
 true if the current state requires timeout support.  true if the current state requires timeout support.
   
 =item GetHostIterator:  
   
 Returns an iterator into the host file hash.  
   
 =cut  =cut
Removed from v.1.43  
changed lines
  Added in v.1.44

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