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Diff for /loncom/lond between versions 1.214 and 1.216

version 1.214, 2004/07/27 11:10:47 version 1.216, 2004/07/27 11:34:49
Line 1035  sub tie_user_hash { Line 1035  sub tie_user_hash {
   
 #--------------------- Request Handlers --------------------------------------------  #--------------------- Request Handlers --------------------------------------------
 #  #
 #   By convention each request handler registers itself prior to the sub declaration:  #   By convention each request handler registers itself prior to the sub 
   #   declaration:
 #  #
   
   #++
   #
 #  Handles ping requests.  #  Handles ping requests.
 #  Parameters:  #  Parameters:
 #      $cmd    - the actual keyword that invoked us.  #      $cmd    - the actual keyword that invoked us.
Line 1062  sub ping_handler { Line 1065  sub ping_handler {
 }  }
 &register_handler("ping", \&ping_handler, 0, 1, 1);       # Ping unencoded, client or manager.  &register_handler("ping", \&ping_handler, 0, 1, 1);       # Ping unencoded, client or manager.
   
   #++
   #
   # Handles pong requests.  Pong replies with our current host id, and
   #                         the results of a ping sent to us via our lonc.
   #
   # Parameters:
   #      $cmd    - the actual keyword that invoked us.
   #      $tail   - the tail of the request that invoked us.
   #      $replyfd- File descriptor connected to the client
   #  Implicit Inputs:
   #      $currenthostid - Global variable that carries the name of the host we are
   #                       connected to.
   #  Returns:
   #      1       - Ok to continue processing.
   #      0       - Program should exit.
   #  Side effects:
   #      Reply information is sent to the client.
   
   sub pong_handler {
       my ($cmd, $tail, $replyfd) = @_;
   
       my $reply=&reply("ping",$clientname);
       &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail"); 
       return 1;
   }
   &register_handler("pong", \&pong_handler, 0, 1, 1);       # Pong unencoded, client or manager
   
   #++
   #      Called to establish an encrypted session key with the remote client.
   #      Note that with secure lond, in most cases this function is never
   #      invoked.  Instead, the secure session key is established either
   #      via a local file that's locked down tight and only lives for a short
   #      time, or via an ssl tunnel...and is generated from a bunch-o-random
   #      bits from /dev/urandom, rather than the predictable pattern used by
   #      by this sub.  This sub is only used in the old-style insecure
   #      key negotiation.
   # Parameters:
   #      $cmd    - the actual keyword that invoked us.
   #      $tail   - the tail of the request that invoked us.
   #      $replyfd- File descriptor connected to the client
   #  Implicit Inputs:
   #      $currenthostid - Global variable that carries the name of the host
   #                       known as.
   #      $clientname    - Global variable that carries the name of the hsot we're connected to.
   #  Returns:
   #      1       - Ok to continue processing.
   #      0       - Program should exit.
   #  Implicit Outputs:
   #      Reply information is sent to the client.
   #      $cipher is set with a reference to a new IDEA encryption object.
   #
   sub establish_key_handler {
       my ($cmd, $tail, $replyfd) = @_;
   
       my $buildkey=time.$$.int(rand 100000);
       $buildkey=~tr/1-6/A-F/;
       $buildkey=int(rand 100000).$buildkey.int(rand 100000);
       my $key=$currenthostid.$clientname;
       $key=~tr/a-z/A-Z/;
       $key=~tr/G-P/0-9/;
       $key=~tr/Q-Z/0-9/;
       $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
       $key=substr($key,0,32);
       my $cipherkey=pack("H32",$key);
       $cipher=new IDEA $cipherkey;
       &Reply($replyfd, "$buildkey\n", "$cmd:$tail"); 
      
       return 1;
   
   }
   &register_handler("ekey", \&establish_key_handler, 0, 1,1);
   
   
   
 #---------------------------------------------------------------  #---------------------------------------------------------------
 #  #
Line 1174  sub process_request { Line 1250  sub process_request {
   
     }          }    
   
 # ------------------------------------------------------------- Normal commands  #------------------- Commands not yet in spearate handlers. --------------
     if ($userinput =~ /^pong/) { # client only  
  if(isClient) {  
     my $reply=&reply("ping",$clientname);  
     print $client "$currenthostid:$reply\n";   
  } else {  
     Reply($client, "refused\n", $userinput);  
  }  
 # ------------------------------------------------------------------------ ekey  
     } elsif ($userinput =~ /^ekey/) { # ok for both clients & mgrs  
  my $buildkey=time.$$.int(rand 100000);  
  $buildkey=~tr/1-6/A-F/;  
  $buildkey=int(rand 100000).$buildkey.int(rand 100000);  
  my $key=$currenthostid.$clientname;  
  $key=~tr/a-z/A-Z/;  
  $key=~tr/G-P/0-9/;  
  $key=~tr/Q-Z/0-9/;  
  $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;  
  $key=substr($key,0,32);  
  my $cipherkey=pack("H32",$key);  
  $cipher=new IDEA $cipherkey;  
  print $client "$buildkey\n";   
 # ------------------------------------------------------------------------ load  # ------------------------------------------------------------------------ load
     } elsif ($userinput =~ /^load/) { # client only      if ($userinput =~ /^load/) { # client only
  if (isClient) {   if (isClient) {
     my $loadavg;      my $loadavg;
     {      {
Removed from v.1.214  
changed lines
  Added in v.1.216

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