--- loncom/lonnet/perl/lonnet.pm	2002/02/19 21:53:42	1.202
+++ loncom/lonnet/perl/lonnet.pm	2002/04/04 20:37:05	1.207
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.202 2002/02/19 21:53:42 matthew Exp $
+# $Id: lonnet.pm,v 1.207 2002/04/04 20:37:05 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -137,8 +137,24 @@ sub subreply {
 
 sub reply {
     my ($cmd,$server)=@_;
+    unless (defined($hostname{$server})) { return 'no_such_host'; }
     my $answer=subreply($cmd,$server);
-    if ($answer eq 'con_lost') { $answer=subreply($cmd,$server); }
+    if ($answer eq 'con_lost') {
+       sleep 5; 
+       $answer=subreply($cmd,$server);
+       if ($answer eq 'con_lost') {
+	   &logthis("Second attempt con_lost on $server");
+           my $peerfile="$perlvar{'lonSockDir'}/$server";
+           my $client=IO::Socket::UNIX->new(Peer    =>"$peerfile",
+                                            Type    => SOCK_STREAM,
+                                            Timeout => 10)
+                      or return "con_lost";
+           &logthis("Killing socket");
+           print $client "close_connection_exit\n";
+           sleep 5;
+           $answer=subreply($cmd,$server);       
+       }   
+    }
     if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
        &logthis("<font color=blue>WARNING:".
                 " $cmd to $server returned $answer</font>");
@@ -700,6 +716,7 @@ sub flushcourselogs {
     &logthis('Flushing course log buffers');
     foreach (keys %courselogs) {
         my $crsid=$_;
+	&logthis(":$crsid:$coursehombuf{$crsid}");
         if (&reply('log:'.$coursedombuf{$crsid}.':'.
 		          &escape($courselogs{$crsid}),
 		          $coursehombuf{$crsid}) eq 'ok') {
@@ -897,10 +914,55 @@ sub devalidate {
     }
 }
 
+sub arrayref2str {
+  my ($arrayref) = @_;
+  my $result='_ARRAY_REF__';
+  foreach my $elem (@$arrayref) {
+    if (ref($elem) eq 'ARRAY') {
+      $result.=&escape(&arrayref2str($elem)).'&';
+    } elsif (ref($elem) eq 'HASH') {
+      $result.=&escape(&hashref2str($elem)).'&';
+    } elsif (ref($elem)) {
+      &logthis("Got a ref of ".(ref($elem))." skipping.");
+    } else {
+      $result.=&escape($elem).'&';
+    }
+  }
+  $result=~s/\&$//;
+  return $result;
+}
+
 sub hash2str {
-  my (%hash)=@_;
-  my $result='';
-  foreach (keys %hash) { $result.=escape($_).'='.escape($hash{$_}).'&'; }
+  my (%hash) = @_;
+  my $result=&hashref2str(\%hash);
+  $result=~s/^_HASH_REF__//;
+  return $result;
+}
+
+sub hashref2str {
+  my ($hashref)=@_;
+  my $result='_HASH_REF__';
+  foreach (keys(%$hashref)) {
+    if (ref($_) eq 'ARRAY') {
+      $result.=&escape(&arrayref2str($_)).'=';
+    } elsif (ref($_) eq 'HASH') {
+      $result.=&escape(&hashref2str($_)).'=';
+    } elsif (ref($_)) {
+      &logthis("Got a ref of ".(ref($_))." skipping.");
+    } else {
+      $result.=&escape($_).'=';
+    }
+
+    if (ref($$hashref{$_}) eq 'ARRAY') {
+      $result.=&escape(&arrayref2str($$hashref{$_})).'&';
+    } elsif (ref($$hashref{$_}) eq 'HASH') {
+      $result.=&escape(&hashref2str($$hashref{$_})).'&';
+    } elsif (ref($$hashref{$_})) {
+      &logthis("Got a ref of ".(ref($$hashref{$_}))." skipping.");
+    } else {
+      $result.=&escape($$hashref{$_}).'&';
+    }
+  }
   $result=~s/\&$//;
   return $result;
 }
@@ -910,9 +972,39 @@ sub str2hash {
   my %returnhash;
   foreach (split(/\&/,$string)) {
     my ($name,$value)=split(/\=/,$_);
-    $returnhash{&unescape($name)}=&unescape($value);
+    $name=&unescape($name);
+    $value=&unescape($value);
+    if ($value =~ /^_HASH_REF__/) {
+      $value =~ s/^_HASH_REF__//;
+      my %hash=&str2hash($value);
+      $value=\%hash;
+    } elsif ($value =~ /^_ARRAY_REF__/) {
+      $value =~ s/^_ARRAY_REF__//;
+      my @array=&str2array($value);
+      $value=\@array;
+    }
+    $returnhash{$name}=$value;
   }
-  return %returnhash;
+  return (%returnhash);
+}
+
+sub str2array {
+  my ($string) = @_;
+  my @returnarray;
+  foreach my $value (split(/\&/,$string)) {
+    $value=&unescape($value);
+    if ($value =~ /^_HASH_REF__/) {
+      $value =~ s/^_HASH_REF__//;
+      my %hash=&str2hash($value);
+      $value=\%hash;
+    } elsif ($value =~ /^_ARRAY_REF__/) {
+      $value =~ s/^_ARRAY_REF__//;
+      my @array=&str2array($value);
+      $value=\@array;
+    }
+    push(@returnarray,$value);
+  }
+  return (@returnarray);
 }
 
 # -------------------------------------------------------------------Temp Store
@@ -1768,22 +1860,27 @@ sub modifyuserauth {
 
 # --------------------------------------------------------------- Modify a user
 
-
 sub modifyuser {
-    my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,
-        $forceid)=@_;
+    my ($udom,    $uname, $uid,
+        $umode,   $upass, $first,
+        $middle,  $last,  $gene,
+        $forceid, $desiredhome)=@_;
     $udom=~s/\W//g;
     $uname=~s/\W//g;
     &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
              $umode.', '.$first.', '.$middle.', '.
-	     $last.', '.$gene.'(forceid: '.$forceid.') by '.
-             $ENV{'user.name'}.' at '.$ENV{'user.domain'});  
+	     $last.', '.$gene.'(forceid: '.$forceid.')'.
+             (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
+                                     ' desiredhome not specified'). 
+             ' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'});
     my $uhome=&homeserver($uname,$udom);
 # ----------------------------------------------------------------- Create User
     if (($uhome eq 'no_host') && ($umode) && ($upass)) {
         my $unhome='';
 	if ($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $udom) {
 	    $unhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
+        } elsif (defined($desiredhome) && $hostdom{$desiredhome} eq $udom) { 
+            $unhome = $desiredhome;
         } else {
             my $tryserver;
             my $loadm=10000000;
@@ -1798,7 +1895,8 @@ sub modifyuser {
 	    }
         }
         if (($unhome eq '') || ($unhome eq 'no_host')) {
-	    return 'error: find home';
+	    return 'error: unable to find a home server for '.$uname.
+                   ' in domain '.$udom;
         }
         my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
                          &escape($upass),$unhome);
@@ -1827,6 +1925,7 @@ sub modifyuser {
     my %names=&get('environment',
 		   ['firstname','middlename','lastname','generation'],
 		   $udom,$uname);
+    if ($names{'firstname'} =~ m/^error:.*/) { %names=(); }
     if ($first)  { $names{'firstname'}  = $first; }
     if ($middle) { $names{'middlename'} = $middle; }
     if ($last)   { $names{'lastname'}   = $last; }
@@ -2620,6 +2719,7 @@ sub unescape {
 # ================================================================ Main Program
 
 sub goodbye {
+   &logthis("Starting Shut down");
    &flushcourselogs();
    &logthis("Shutting down");
 }
@@ -2882,12 +2982,30 @@ devalidate($symb) : devalidate spreadshe
 =item *
 
 hash2str(%hash) : convert a hash into a string complete with escaping and '='
-and '&' separators
+and '&' separators, supports elements that are arrayrefs and hashrefs
+
+=item *
+
+hashref2str($hashref) : convert a hashref into a string complete with
+escaping and '=' and '&' separators, supports elements that are
+arrayrefs and hashrefs
+
+=item *
+
+arrayref2str($arrayref) : convert an arrayref into a string complete
+with escaping and '&' separators, supports elements that are arrayrefs
+and hashrefs
+
+=item *
+
+str2hash($string) : convert string to hash using unescaping and
+splitting on '=' and '&', supports elements that are arrayrefs and
+hashrefs
 
 =item *
 
-str2hash($string) : convert string to hash using unescaping and splitting on
-'=' and '&'
+str2array($string) : convert string to hash using unescaping and
+splitting on '&', supports elements that are arrayrefs and hashrefs
 
 =item *