--- loncom/auth/lonacc.pm	2006/04/05 22:39:55	1.74
+++ loncom/auth/lonacc.pm	2006/07/17 19:49:14	1.87
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Cookie Based Access Handler
 #
-# $Id: lonacc.pm,v 1.74 2006/04/05 22:39:55 albertel Exp $
+# $Id: lonacc.pm,v 1.87 2006/07/17 19:49:14 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -35,8 +35,334 @@ use Apache::File;
 use Apache::lonnet;
 use Apache::loncommon();
 use Apache::lonlocal;
+use Apache::restrictedaccess();
 use CGI::Cookie();
 use Fcntl qw(:flock);
+use LONCAPA;
+
+sub cleanup {
+    my ($r)=@_;
+    if (! $r->is_initial_req()) { return DECLINED; }
+    &Apache::lonnet::save_cache();
+    return OK;
+}
+
+sub goodbye {
+    my ($r)=@_;
+    &Apache::lonnet::goodbye();
+    return DONE;
+}
+
+###############################################
+
+sub get_posted_cgi {
+    my ($r) = @_;
+
+    my $buffer;
+    if ($r->header_in('Content-length')) {
+	$r->read($buffer,$r->header_in('Content-length'),0);
+    }
+    unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
+	my @pairs=split(/&/,$buffer);
+	my $pair;
+	foreach $pair (@pairs) {
+	    my ($name,$value) = split(/=/,$pair);
+	    $value =~ tr/+/ /;
+	    $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
+	    $name  =~ tr/+/ /;
+	    $name  =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
+	    &Apache::loncommon::add_to_env("form.$name",$value);
+	}
+    } else {
+	my $contentsep=$1;
+	my @lines = split (/\n/,$buffer);
+	my $name='';
+	my $value='';
+	my $fname='';
+	my $fmime='';
+	my $i;
+	for ($i=0;$i<=$#lines;$i++) {
+	    if ($lines[$i]=~/^$contentsep/) {
+		if ($name) {
+		    chomp($value);
+		    if ($fname) {
+			$env{"form.$name.filename"}=$fname;
+			$env{"form.$name.mimetype"}=$fmime;
+		    } else {
+			$value=~s/\s+$//s;
+		    }
+		    &Apache::loncommon::add_to_env("form.$name",$value);
+		}
+		if ($i<$#lines) {
+		    $i++;
+		    $lines[$i]=~
+		/Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
+		    $name=$1;
+		    $value='';
+		    if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
+			$fname=$1;
+			if 
+                            ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
+				$fmime=$1;
+				$i++;
+			    } else {
+				$fmime='';
+			    }
+		    } else {
+			$fname='';
+			$fmime='';
+		    }
+		    $i++;
+		}
+	    } else {
+		$value.=$lines[$i]."\n";
+	    }
+	}
+    }
+#
+# Digested POSTed values
+#
+# Remember the way this was originally done (GET or POST)
+#
+    $env{'request.method'}=$ENV{'REQUEST_METHOD'};
+#
+# There may also be stuff in the query string
+# Tell subsequent handlers that this was GET, not POST, so they can access query string.
+# Also, unset POSTed content length to cover all tracks.
+#
+
+    $r->method_number(M_GET);
+
+    $r->method('GET');
+    $r->headers_in->unset('Content-length');
+}
+
+sub portfolio_access {
+    my ($r,$requrl) = @_;
+    my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
+    my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
+    if ($result eq 'ok') {
+	return OK;
+    } elsif ($result =~ /^[^:]+:guest_/) {
+	&passphrase_access_checker($r,$result,$requrl);
+	return OK;
+    }
+    return FORBIDDEN;
+}
+
+sub get_portfolio_access {
+    my ($udom,$unum,$file_name,$group) = @_;
+ 
+    my $current_perms = &Apache::lonnet::get_portfile_permissions($udom,$unum);
+    my %access_controls = &Apache::lonnet::get_access_controls(
+                                             $current_perms,$group,$file_name);
+    my ($public,$guest,@domains,@users,@courses,@groups);
+    my $now = time;
+    my $access_hash = $access_controls{$file_name};
+    if (ref($access_hash) eq 'HASH') {
+        foreach my $key (keys(%{$access_hash})) {
+            my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
+            if ($start > $now) {
+                next;
+            }
+            if ($end && $end<$now) {
+                next;
+            }
+            if ($scope eq 'public') {
+                $public = $key;
+                last;
+            } elsif ($scope eq 'guest') {
+                $guest = $key;
+            } elsif ($scope eq 'domains') {
+                push(@domains,$key);
+            } elsif ($scope eq 'users') {
+                push(@users,$key);
+            } elsif ($scope eq 'course') {
+                push(@courses,$key);
+            } elsif ($scope eq 'group') {
+                push(@groups,$key);
+            }
+        }
+        if ($public) {
+            return 'ok';
+        }
+        if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
+            if ($guest) {
+                return $guest;
+            }
+        } else {
+            if (@domains > 0) {
+                foreach my $domkey (@domains) {
+                    my %content = &Apache::lonnet::parse_access_controls($$access_hash{$domkey});
+                    if (ref($content{'dom'}) eq 'ARRAY') {
+                        if (grep(/^\Q$env{'user.domain'}\E$/,@{$content{'dom'}})) {
+                            return 'ok';
+                        }
+                    }
+                }
+            }
+            if (@users > 0) {
+                foreach my $userkey (@users) {
+                    my %content = &Apache::lonnet::parse_access_controls($$access_hash{$userkey});
+                    if (exists($content{'users'}{$env{'user.name'}.':'.$env{'user.domain'}})) {
+                        return 'ok';
+                    }
+                }
+            }
+            my %roleshash;
+            my @courses_and_groups = @courses;
+            push(@courses_and_groups,@groups); 
+            if (@courses_and_groups > 0) {
+                my (%allgroups,%allroles); 
+                my ($start,$end,$role,$sec,$group);
+                foreach my $envkey (%env) {
+                    if ($envkey =~ m-^user\.role\.(gr|cc|in|ta|ep|st)\./([^/]+)/([^/]+)/?([^/]*)$-) {
+                        my $cid = $2.'_'.$3; 
+                        if ($1 eq 'gr') {
+                            $group = $4;
+                            $allgroups{$cid}{$group} = $env{$envkey};
+                        } else {
+                            if ($4 eq '') {
+                                $sec = 'none';
+                            } else {
+                                $sec = $4;
+                            }
+                            $allroles{$cid}{$1}{$sec} = $env{$envkey};
+                        }
+                    } elsif ($envkey =~ m-^user\.role\./cr/(\w+/\w+/\w*)./([^/]+)/([^/]+)/?([^/]*)$-) {
+                        my $cid = $2.'_'.$3;
+                        if ($4 eq '') {
+                            $sec = 'none';
+                        } else {
+                            $sec = $4;
+                        }
+                        $allroles{$cid}{$1}{$sec} = $env{$envkey};
+                    }
+                }
+                if (keys(%allroles) == 0) {
+                    return;
+                }
+                foreach my $key (@courses_and_groups) {
+                    my %content = &Apache::lonnet::parse_access_controls($$access_hash{$key});
+                    my $cnum = $content{'number'};
+                    my $cdom = $content{'domain'};
+                    my $cid = $cdom.'_'.$cnum;
+                    if (!exists($allroles{$cid})) {
+                        next;
+                    }    
+                    foreach my $role_id (keys(%{$content{'roles'}})) {
+                        my @sections = @{$content{'roles'}{$role_id}{'section'}};
+                        my @groups = @{$content{'roles'}{$role_id}{'group'}};
+                        my @status = @{$content{'roles'}{$role_id}{'access'}};
+                        my @roles = @{$content{'roles'}{$role_id}{'role'}};
+                        foreach my $role (keys(%{$allroles{$cid}})) {
+                            if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
+                                foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
+                                    if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
+                                        if (grep/^all$/,@sections) {
+                                            return 'ok';
+                                        } else {
+                                            if (grep/^$sec$/,@sections) {
+                                                return 'ok';
+                                            }
+                                        }
+                                    }
+                                }
+                                if (keys(%{$allgroups{$cid}}) == 0) {
+                                    if (grep/^none$/,@groups) {
+                                        return 'ok';
+                                    }
+                                } else {
+                                    if (grep/^all$/,@groups) {
+                                        return 'ok';
+                                    } 
+                                    foreach my $group (keys(%{$allgroups{$cid}})) {
+                                        if (grep/^$group$/,@groups) {
+                                            return 'ok';
+                                        }
+                                    }
+                                } 
+                            }
+                        }
+                    }
+                }
+            }
+            if ($guest) {
+                return $guest;
+            }
+        }
+    }
+    return;
+}
+
+sub passphrase_access_checker {
+    my ($r,$guestkey,$requrl) = @_;
+    my ($num,$scope,$end,$start) = ($guestkey =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
+    if ($scope eq 'guest') {
+        if (exists($env{'user.passphrase_access_'.$requrl})) {
+            if (($env{'user.passphrase_access_'.$requrl} == 0) || 
+                ($env{'user.passphrase_access_'.$requrl} > time)) {
+                $env{'request.publicaccess'} = 1;
+                return 'ok'; 
+            }
+        }
+    }
+    $r->set_handlers('PerlHandler'=> \&Apache::restrictedaccess::handler);
+    $r->content_type('perl-script');
+    return;
+}
+
+sub course_group_datechecker {
+    my ($dates,$now,$status) = @_;
+    my ($start,$end) = split(/\./,$dates);
+    if (!$start && !$end) {
+        return 'ok';
+    }
+    if (grep/^active$/,@{$status}) {
+        if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
+            return 'ok';
+        }
+    }
+    if (grep/^previous$/,@{$status}) {
+        if ($end > $now ) {
+            return 'ok';
+        }
+    }
+    if (grep/^future$/,@{$status}) {
+        if ($start > $now) {
+            return 'ok';
+        }
+    }
+    return; 
+}
+
+sub parse_portfolio_url {
+    my ($url) = @_;
+
+    my ($type,$udom,$unum,$group,$file_name);
+    
+    if ($url =~  m-/+uploaded/([^/]+)/([^/]+)/portfolio(/.+)$-) {
+	$type = 1;
+        $udom = $1;
+        $unum = $2;
+        $file_name = $3;
+    } elsif ($url =~ m-/+uploaded/([^/]+)/([^/]+)/groups/([^/]+)/portfolio/(.+)$-) {
+	$type = 2;
+        $udom = $1;
+        $unum = $2;
+        $group = $3;
+        $file_name = $3.'/'.$4;
+    }
+    if (wantarray) {
+	return ($type,$udom,$unum,$file_name,$group);
+    }
+    return $type;
+}
+
+sub is_portfolio_url {
+    my ($url) = @_;
+    return scalar(&parse_portfolio_url($url));
+}
 
 sub handler {
     my $r = shift;
@@ -52,8 +378,10 @@ sub handler {
         $handle=~s/\W//g;
     }
       
+    my ($sso_login);
     if ($r->user 
 	&& (!$lonid || !-e "$lonidsdir/$handle.id" || $handle eq '') ) {
+	$sso_login = 1;
 	my $domain = $r->dir_config('lonDefDomain');
 	my $home=&Apache::lonnet::homeserver($r->user,$domain);
 	if ($home !~ /(con_lost|no_such_host)/) {
@@ -63,6 +391,10 @@ sub handler {
 	}
     }
 
+    if ($sso_login) {
+	&Apache::lonnet::appenv('request.sso.login' => 1);
+    }
+
     if ($r->dir_config("lonBalancer") eq 'yes') {
 	$r->set_handlers('PerlResponseHandler'=>
 			 [\&Apache::switchserver::handler]);
@@ -90,10 +422,13 @@ sub handler {
             $env{'request.noversionuri'} = &Apache::lonnet::deversion($requrl);
 # -------------------------------------------------------- Load POST parameters
 
-	    &Apache::loncommon::get_posted_cgi($r);
+	    &Apache::lonacc::get_posted_cgi($r);
 
 # ---------------------------------------------------------------- Check access
-
+            my $now = time;
+	    if (&is_portfolio_url($requrl)) {
+		return &portfolio_access($r,$requrl);
+	    }
             if ($requrl!~/^\/adm|public|prtspool\//) {
 		my $access=&Apache::lonnet::allowed('bre',$requrl);
                 if ($access eq '1') {
@@ -195,7 +530,7 @@ sub handler {
 	    &Apache::lonauth::success($r,'public','public','public');
         my $lonidsdir=$r->dir_config('lonIDsDir');
 	&Apache::lonnet::transfer_profile_to_env($lonidsdir,$cookie);
-	&Apache::loncommon::get_posted_cgi($r);
+	&Apache::lonacc::get_posted_cgi($r);
         $env{'request.state'} = "published";
         $env{'request.publicaccess'} = 1;
         $env{'request.filename'} = $r->filename;
@@ -206,6 +541,11 @@ sub handler {
     if ($requrl=~m|^/+adm/+help/+|) {
 	return OK;
     }
+# ------------------------------------- See if this is a viewable portfolio file
+    if (&is_portfolio_url($requrl)) {
+	return &portfolio_access($r,$requrl);
+    }
+
 # -------------------------------------------------------------- Not authorized
     $requrl=~/\.(\w+)$/;
 #    if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') ||