--- loncom/lonnet/perl/lonnet.pm	2004/05/11 06:49:58	1.500
+++ loncom/lonnet/perl/lonnet.pm	2004/05/28 17:33:41	1.505
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.500 2004/05/11 06:49:58 albertel Exp $
+# $Id: lonnet.pm,v 1.505 2004/05/28 17:33:41 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -434,7 +434,7 @@ sub overloaderror {
     if ($overload>0) {
 	$r->err_headers_out->{'Retry-After'}=$overload;
         $r->log_error('Overload of '.$overload.' on '.$checkserver);
-        return 413;
+        return 409;
     }    
     return '';
 }
@@ -1638,6 +1638,28 @@ sub courseiddump {
 #
 # ----------------------------------------------------------- Check out an item
 
+sub get_first_access {
+    my ($type,$argsymb)=@_;
+    my ($symb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
+    if ($argsymb) { $symb=$argsymb; }
+    my ($map,$id,$res)=&decode_symb($symb);
+    if ($type eq 'map') { $res=$map; }
+    my %times=&get('firstaccesstimes',[$res],$udom,$uname);
+    return $times{$res};
+}
+
+sub set_first_access {
+    my ($type)=@_;
+    my ($symb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
+    my ($map,$id,$res)=&decode_symb($symb);
+    if ($type eq 'map') { $res=$map; }
+    my $firstaccess=&get_first_access($type);
+    if (!$firstaccess) {
+	return &put('firstaccesstimes',{$res=>time},$udom,$uname);
+    }
+    return 'already_set';
+}
+
 sub checkout {
     my ($symb,$tuname,$tudom,$tcrsid)=@_;
     my $now=time;
@@ -4462,7 +4484,16 @@ sub numval2 {
 }
 
 sub latest_rnd_algorithm_id {
-    return '64bit2';
+    return '64bit3';
+}
+
+sub get_rand_alg {
+    my ($courseid)=@_;
+    if (!$courseid) { $courseid=(&Apache::lonxml::whichuser())[1]; }
+    if ($courseid) {
+	return $ENV{"course.$courseid.rndseed"};
+    }
+    return &latest_rnd_algorithm_id();
 }
 
 sub getCODE {
@@ -4484,9 +4515,11 @@ sub rndseed {
     if (!$courseid) { $courseid=$wcourseid; }
     if (!$domain) { $domain=$wdomain; }
     if (!$username) { $username=$wusername }
-    my $which=$ENV{"course.$courseid.rndseed"};
+    my $which=&get_rand_alg();
     if (defined(&getCODE())) {
 	return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
+    } elsif ($which eq '64bit3') {
+	return &rndseed_64bit3($symb,$courseid,$domain,$username);
     } elsif ($which eq '64bit2') {
 	return &rndseed_64bit2($symb,$courseid,$domain,$username);
     } elsif ($which eq '64bit') {
@@ -4554,6 +4587,28 @@ sub rndseed_64bit2 {
     }
 }
 
+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 $num2=$nameseed+$domainseed+$courseseed;
+	#&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
+	#&Apache::lonxml::debug("rndseed :$num:$symb");
+	return "$num1:$num2";
+    }
+}
+
 sub rndseed_CODE_64bit {
     my ($symb,$courseid,$domain,$username)=@_;
     {
@@ -4567,14 +4622,14 @@ sub rndseed_CODE_64bit {
 	my $num2=$CODEseed+$courseseed+$symbchck;
 	#&Apache::lonxml::debug("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
 	#&Apache::lonxml::debug("rndseed :$num1:$num2:$symb");
-	return "$num1,$num2";
+	return "$num1:$num2";
     }
 }
 
 sub setup_random_from_rndseed {
     my ($rndseed)=@_;
-    if ($rndseed =~/,/) {
-	my ($num1,$num2)=split(/,/,$rndseed);
+    if ($rndseed =~/([,:])/) {
+	my ($num1,$num2)=split(/[,:]/,$rndseed);
 	&Math::Random::random_set_seed(abs($num1),abs($num2));
     } else {
 	&Math::Random::random_set_seed_from_phrase($rndseed);