--- loncom/lonnet/perl/lonnet.pm	2003/03/19 16:50:14	1.342
+++ loncom/lonnet/perl/lonnet.pm	2003/03/23 09:00:51	1.347
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.342 2003/03/19 16:50:14 www Exp $
+# $Id: lonnet.pm,v 1.347 2003/03/23 09:00:51 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -588,6 +588,92 @@ sub idput {
     }
 }
 
+# --------------------------------------------------- Assign a key to a student
+
+sub assign_access_key {
+    my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
+    $cdom=
+   $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
+    $cnum=
+   $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
+    $udom=$ENV{'user.name'} unless (defined($udom));
+    $uname=$ENV{'user.domain'} unless (defined($uname));
+    my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
+    if (($existing{$ckey}=~/^\d+$/) || # has time - new key
+        ($existing{$ckey} eq $udom.':'.$uname)) { # this should not happen,
+                                                  # unless something went wrong
+                                                  # the first time around
+# ready to assign
+    } elsif (!$existing{$ckey}) {
+        if (&put('accesskey',{$ckey=>$udom.':'.$uname},$cdom,$cnum) eq 'ok') {
+# key now belongs to user
+	    my $envkey='key.'.$cdom.'_'.$cnum;
+            if (&put('environment',{$envkey => $ckey}) eq 'ok') {
+                &appenv('environment.'.$envkey => $ckey);
+                return 'ok';
+            } else {
+                return 
+  'error: Count not permanently assign key, will need to be re-entered later.';
+	    }
+        } else {
+            return 'error: Could not assign key, try again later.';
+        }
+# the key does not exist
+	return 'error: The key does not exist';
+    } else {
+# the key is somebody else's
+	return 'error: The key is already in use';
+    }
+}
+
+# ------------------------------------------------------ Generate a set of keys
+
+sub generate_access_keys {
+    my ($number,$cdom,$cnum)=@_;
+    $cdom=
+   $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
+    $cnum=
+   $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
+    unless (&allowed('ccc',$cdom)) { return 0; }
+    unless (($cdom) && ($cnum)) { return 0; }
+    if ($number>10000) { return 0; }
+    sleep(2); # make sure don't get same seed twice
+    srand(time()^($$+($$<<15))); # from "Programming Perl"
+    my $total=0;
+    for (my $i=1;$i<=$number;$i++) {
+       my $newkey=sprintf("%lx",int(100000*rand)).'-'.
+                  sprintf("%lx",int(100000*rand)).'-'.
+                  sprintf("%lx",int(100000*rand));
+       $newkey=~s/1/g/g; # folks mix up 1 and l
+       $newkey=~s/0/h/g; # and also 0 and O
+       my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
+       if ($existing{$newkey}) {
+           $i--;
+       } else {
+	  if (&put('accesskeys',{ $newkey => time() },$cdom,$cnum) eq 'ok') {
+              $total++;
+	  }
+       }
+    }
+    &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.home'},
+         'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
+    return $total;
+}
+
+# ------------------------------------------------------- Validate an accesskey
+
+sub validate_access_key {
+    my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
+    $cdom=
+   $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
+    $cnum=
+   $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
+    $udom=$ENV{'user.name'} unless (defined($udom));
+    $uname=$ENV{'user.domain'} unless (defined($uname));
+    my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
+    return ($existing{$ckey} eq $udom.':'.$uname);
+}
+
 # ------------------------------------- Find the section of student in a course
 
 sub getsection {
@@ -1632,42 +1718,54 @@ sub rolesinit {
                 }
             }
             if (($area ne '') && ($trole ne '')) {
-	       my $spec=$trole.'.'.$area;
-               my ($tdummy,$tdomain,$trest)=split(/\//,$area);
-               if ($trole =~ /^cr\//) {
-		   my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
-                   my $homsvr=homeserver($rauthor,$rdomain);
-                   if ($hostname{$homsvr} ne '') {
-                      my $roledef=
-			  reply("get:$rdomain:$rauthor:roles:rolesdef_$rrole",
-                                $homsvr);
-                      if (($roledef ne 'con_lost') && ($roledef ne '')) {
-                         my ($syspriv,$dompriv,$coursepriv)=
-			     split(/\_/,unescape($roledef));
- 	                 $allroles{'cm./'}.=':'.$syspriv;
-                         $allroles{$spec.'./'}.=':'.$syspriv;
-                         if ($tdomain ne '') {
-                             $allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
-                             $allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
-                             if ($trest ne '') {
-		                $allroles{'cm.'.$area}.=':'.$coursepriv;
-		                $allroles{$spec.'.'.$area}.=':'.$coursepriv;
-                             }
-	                 }
-                      }
-                   }
-               } else {
-	           $allroles{'cm./'}.=':'.$pr{$trole.':s'};
-	           $allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
-                   if ($tdomain ne '') {
-                     $allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
-                     $allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
-                      if ($trest ne '') {
-		          $allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
-		          $allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
-                      }
-	           }
-	       }
+		my $spec=$trole.'.'.$area;
+		my ($tdummy,$tdomain,$trest)=split(/\//,$area);
+		if ($trole =~ /^cr\//) {
+		    my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
+		    my $homsvr=homeserver($rauthor,$rdomain);
+		    if ($hostname{$homsvr} ne '') {
+			my $roledef=
+			    reply("get:$rdomain:$rauthor:roles:rolesdef_$rrole",
+				  $homsvr);
+			if (($roledef ne 'con_lost') && ($roledef ne '')) {
+			    my ($syspriv,$dompriv,$coursepriv)=
+				split(/\_/,unescape($roledef));
+			    if (defined($syspriv)) {
+				$allroles{'cm./'}.=':'.$syspriv;
+				$allroles{$spec.'./'}.=':'.$syspriv;
+			    }
+			    if ($tdomain ne '') {
+				if (defined($dompriv)) {
+				    $allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
+				    $allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
+				}
+				if ($trest ne '') {
+				    if (defined($coursepriv)) {
+					$allroles{'cm.'.$area}.=':'.$coursepriv;
+					$allroles{$spec.'.'.$area}.=':'.$coursepriv;
+				    }
+				}
+			    }
+			}
+		    }
+		} else {
+		    if (defined($pr{$trole.':s'})) {
+			$allroles{'cm./'}.=':'.$pr{$trole.':s'};
+			$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
+		    }
+		    if ($tdomain ne '') {
+			if (defined($pr{$trole.':d'})) {
+			    $allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
+			    $allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
+			}
+			if ($trest ne '') {
+			    if (defined($pr{$trole.':c'})) {
+				$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
+				$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
+			    }
+			}
+		    }
+		}
             }
           } 
         }
@@ -1875,12 +1973,27 @@ sub eget {
 sub customaccess {
     my ($priv,$uri)=@_;
     my ($urole,$urealm)=split(/\./,$ENV{'request.role'});
-    my ($udm,$ucid,$usec)=split(/\//,$urealm);
+    $urealm=~s/^\W//;
+    my ($udom,$ucrs,$usec)=split(/\//,$urealm);
     my $access=0;
     foreach (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
 	my ($effect,$realm,$role)=split(/\:/,$_);
-        foreach my $thisrealm (split(/\s*\,\s*/,$realm)) {
-            &logthis('testing '.$effect.' '.$thisrealm.' '.$role);
+        if ($role) {
+	   if ($role ne $urole) { next; }
+        }
+        foreach (split(/\s*\,\s*/,$realm)) {
+            my ($tdom,$tcrs,$tsec)=split(/\_/,$_);
+            if ($tdom) {
+		if ($tdom ne $udom) { next; }
+            }
+            if ($tcrs) {
+		if ($tcrs ne $ucrs) { next; }
+            }
+            if ($tsec) {
+		if ($tsec ne $usec) { next; }
+            }
+            $access=($effect eq 'allow');
+            last;
         }
     }
     return $access;