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Diff for /loncom/lonnet/perl/lonnet.pm between versions 1.500 and 1.501

version 1.500, 2004/05/11 06:49:58 version 1.501, 2004/05/12 19:48:51
Line 4462  sub numval2 { Line 4462  sub numval2 {
 }  }
   
 sub latest_rnd_algorithm_id {  sub latest_rnd_algorithm_id {
     return '64bit2';      return '64bit3';
 }  }
   
 sub getCODE {  sub getCODE {
Line 4487  sub rndseed { Line 4487  sub rndseed {
     my $which=$ENV{"course.$courseid.rndseed"};      my $which=$ENV{"course.$courseid.rndseed"};
     if (defined(&getCODE())) {      if (defined(&getCODE())) {
  return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);   return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
       } elsif ($which eq '64bit3') {
    return &rndseed_64bit3($symb,$courseid,$domain,$username);
     } elsif ($which eq '64bit2') {      } elsif ($which eq '64bit2') {
  return &rndseed_64bit2($symb,$courseid,$domain,$username);   return &rndseed_64bit2($symb,$courseid,$domain,$username);
     } elsif ($which eq '64bit') {      } elsif ($which eq '64bit') {
Line 4546  sub rndseed_64bit2 { Line 4548  sub rndseed_64bit2 {
  my $domainseed=unpack("%32S*",$domain.' ') << 10;   my $domainseed=unpack("%32S*",$domain.' ') << 10;
  my $courseseed=unpack("%32S*",$courseid.' ');   my $courseseed=unpack("%32S*",$courseid.' ');
   
    my $num1=$symbchck+$symbseed+$namechck;
    my $num2=$nameseed+$domainseed+$courseseed;
    #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
    #&Apache::lonxml::debug("rndseed :$num:$symb");
    return "$num1,$num2";
       }
   }
   
   sub rndseed_64bit3 {
       my ($symb,$courseid,$domain,$username)=@_;
       {
    use integer;
    # strings need to be an even # of cahracters long, it it is odd the
           # last characters gets thrown away
    my $symbchck=unpack("%32S*",$symb.' ') << 21;
    my $symbseed=numval2($symb) << 10;
    my $namechck=unpack("%32S*",$username.' ');
   
    my $nameseed=numval2($username) << 21;
    my $domainseed=unpack("%32S*",$domain.' ') << 10;
    my $courseseed=unpack("%32S*",$courseid.' ');
   
  my $num1=$symbchck+$symbseed+$namechck;   my $num1=$symbchck+$symbseed+$namechck;
  my $num2=$nameseed+$domainseed+$courseseed;   my $num2=$nameseed+$domainseed+$courseseed;
  #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");   #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
Removed from v.1.500  
changed lines
  Added in v.1.501

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