--- loncom/interface/loncommon.pm	2008/09/04 22:06:27	1.679
+++ loncom/interface/loncommon.pm	2008/09/19 23:09:29	1.679.2.5
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common routines
 #
-# $Id: loncommon.pm,v 1.679 2008/09/04 22:06:27 riegler Exp $
+# $Id: loncommon.pm,v 1.679.2.5 2008/09/19 23:09:29 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -1507,9 +1507,9 @@ sub create_text_file {
     $fh = Apache::File->new('>/home/httpd'.$filename);
     if (! defined($fh)) {
         $r->log_error("Couldn't open $filename for output $!");
-        $r->print("Problems occured in creating the output file.  ".
-                  "This error has been logged.  ".
-                  "Please alert your LON-CAPA administrator.");
+        $r->print(&mt('Problems occurred in creating the output file. '
+                     .'This error has been logged. '
+                     .'Please alert your LON-CAPA administrator.'));
     }
     return ($fh,$filename)
 }
@@ -2987,14 +2987,19 @@ sub preferred_languages {
             }
         }
     }
+    return &get_genlanguages(@languages);
+}
+
+sub get_genlanguages {
+    my (@languages) = @_;
 # turn "en-ca" into "en-ca,en"
     my @genlanguages;
     foreach my $lang (@languages) {
-	unless ($lang=~/\w/) { next; }
-	push(@genlanguages,$lang);
-	if ($lang=~/(\-|\_)/) {
-	    push(@genlanguages,(split(/(\-|\_)/,$lang))[0]);
-	}
+        unless ($lang=~/\w/) { next; }
+        push(@genlanguages,$lang);
+        if ($lang=~/(\-|\_)/) {
+            push(@genlanguages,(split(/(\-|\_)/,$lang))[0]);
+        }
     }
     #uniqueify the languages list
     my %count;
@@ -3348,16 +3353,21 @@ sub pprmlink {
 
 
 sub timehash {
-    my @ltime=localtime(shift);
-    return ( 'seconds' => $ltime[0],
-             'minutes' => $ltime[1],
-             'hours'   => $ltime[2],
-             'day'     => $ltime[3],
-             'month'   => $ltime[4]+1,
-             'year'    => $ltime[5]+1900,
-             'weekday' => $ltime[6],
-             'dayyear' => $ltime[7]+1,
-             'dlsav'   => $ltime[8] );
+    my ($thistime) = @_;
+    my $timezone = &Apache::lonlocal::gettimezone();
+    my $dt = DateTime->from_epoch(epoch => $thistime)
+                     ->set_time_zone($timezone);
+    my $wday = $dt->day_of_week();
+    if ($wday == 7) { $wday = 0; }
+    return ( 'second' => $dt->second(),
+             'minute' => $dt->minute(),
+             'hour'   => $dt->hour(),
+             'day'     => $dt->day_of_month(),
+             'month'   => $dt->month(),
+             'year'    => $dt->year(),
+             'weekday' => $wday,
+             'dayyear' => $dt->day_of_year(),
+             'dlsav'   => $dt->is_dst() );
 }
 
 sub utc_string {
@@ -3367,6 +3377,24 @@ sub utc_string {
 
 sub maketime {
     my %th=@_;
+    my ($epoch_time,$timezone,$dt);
+    $timezone = &Apache::lonlocal::gettimezone();
+    eval {
+        $dt = DateTime->new( year   => $th{'year'},
+                             month  => $th{'month'},
+                             day    => $th{'day'},
+                             hour   => $th{'hour'},
+                             minute => $th{'minute'},
+                             second => $th{'second'},
+                             time_zone => $timezone,
+                         );
+    };
+    if (!$@) {
+        $epoch_time = $dt->epoch;
+        if ($epoch_time) {
+            return $epoch_time;
+        }
+    }
     return POSIX::mktime(
         ($th{'seconds'},$th{'minutes'},$th{'hours'},
          $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,-1));
@@ -3747,6 +3775,60 @@ sub blocking_status {
 
 ###############################################
 
+sub check_ip_acc {
+    my ($acc)=@_;
+    &Apache::lonxml::debug("acc is $acc");
+    if (!defined($acc) || $acc =~ /^\s*$/ || $acc =~/^\s*no\s*$/i) {
+        return 1;
+    }
+    my $allowed=0;
+    my $ip=$env{'request.host'} || $ENV{'REMOTE_ADDR'};
+
+    my $name;
+    foreach my $pattern (split(',',$acc)) {
+        $pattern =~ s/^\s*//;
+        $pattern =~ s/\s*$//;
+        if ($pattern =~ /\*$/) {
+            #35.8.*
+            $pattern=~s/\*//;
+            if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
+        } elsif ($pattern =~ /(\d+\.\d+\.\d+)\.\[(\d+)-(\d+)\]$/) {
+            #35.8.3.[34-56]
+            my $low=$2;
+            my $high=$3;
+            $pattern=$1;
+            if ($ip =~ /^\Q$pattern\E/) {
+                my $last=(split(/\./,$ip))[3];
+                if ($last <=$high && $last >=$low) { $allowed=1; }
+            }
+        } elsif ($pattern =~ /^\*/) {
+            #*.msu.edu
+            $pattern=~s/\*//;
+            if (!defined($name)) {
+                use Socket;
+                my $netaddr=inet_aton($ip);
+                ($name)=gethostbyaddr($netaddr,AF_INET);
+            }
+            if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
+        } elsif ($pattern =~ /\d+\.\d+\.\d+\.\d+/) {
+            #127.0.0.1
+            if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
+        } else {
+            #some.name.com
+            if (!defined($name)) {
+                use Socket;
+                my $netaddr=inet_aton($ip);
+                ($name)=gethostbyaddr($netaddr,AF_INET);
+            }
+            if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
+        }
+        if ($allowed) { last; }
+    }
+    return $allowed;
+}
+
+###############################################
+
 =pod
 
 =head1 Domain Template Functions
@@ -9269,7 +9351,7 @@ sub init_user_environment {
 	}
 # Give them a new cookie
 	my $id = ($args->{'robot'} ? 'robot'.$args->{'robot'}
-		                   : $now);
+		                   : $now.$$.int(rand(10000)));
 	$cookie="$username\_$id\_$domain\_$authhost";
     
 # Initialize roles