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Diff for /loncom/lond between versions 1.385 and 1.489.2.8

version 1.385, 2007/10/08 17:40:56 version 1.489.2.8, 2013/08/10 14:20:52
Line 15 Line 15
 #  #
 # LON-CAPA is distributed in the hope that it will be useful,  # LON-CAPA is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of  # but WITHOUT ANY WARRANTY; without even the implied warranty of
   
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.  # GNU General Public License for more details.
 #  #
Line 33  use strict; Line 34  use strict;
 use lib '/home/httpd/lib/perl/';  use lib '/home/httpd/lib/perl/';
 use LONCAPA;  use LONCAPA;
 use LONCAPA::Configuration;  use LONCAPA::Configuration;
   use LONCAPA::Lond;
   
 use IO::Socket;  use IO::Socket;
 use IO::File;  use IO::File;
Line 42  use Crypt::IDEA; Line 44  use Crypt::IDEA;
 use LWP::UserAgent();  use LWP::UserAgent();
 use Digest::MD5 qw(md5_hex);  use Digest::MD5 qw(md5_hex);
 use GDBM_File;  use GDBM_File;
 use Authen::Krb4;  
 use Authen::Krb5;  use Authen::Krb5;
 use localauth;  use localauth;
 use localenroll;  use localenroll;
Line 53  use LONCAPA::lonlocal; Line 54  use LONCAPA::lonlocal;
 use LONCAPA::lonssl;  use LONCAPA::lonssl;
 use Fcntl qw(:flock);  use Fcntl qw(:flock);
 use Apache::lonnet;  use Apache::lonnet;
   use Mail::Send;
   
 my $DEBUG = 0;       # Non zero to enable debug log entries.  my $DEBUG = 0;       # Non zero to enable debug log entries.
   
Line 67  my $currentdomainid; Line 69  my $currentdomainid;
 my $client;  my $client;
 my $clientip; # IP address of client.  my $clientip; # IP address of client.
 my $clientname; # LonCAPA name of client.  my $clientname; # LonCAPA name of client.
   my $clientversion;              # LonCAPA version running on client.
   my $clienthomedom;              # LonCAPA domain of homeID for client. 
                                   # primary library server. 
   
 my $server;  my $server;
   
Line 74  my $keymode; Line 79  my $keymode;
   
 my $cipher; # Cipher key negotiated with client  my $cipher; # Cipher key negotiated with client
 my $tmpsnum = 0; # Id of tmpputs.  my $tmpsnum = 0; # Id of tmpputs.
 my $max_children = 1;           # warn when exceeding this  
 my $max_children_enforcing = 0;  
   
 #   # 
 #   Connection type is:  #   Connection type is:
Line 90  my %managers;   # Ip -> manager names Line 93  my %managers;   # Ip -> manager names
   
 my %perlvar; # Will have the apache conf defined perl vars.  my %perlvar; # Will have the apache conf defined perl vars.
   
   my $dist;
   
 #  #
 #   The hash below is used for command dispatching, and is therefore keyed on the request keyword.  #   The hash below is used for command dispatching, and is therefore keyed on the request keyword.
 #    Each element of the hash contains a reference to an array that contains:  #    Each element of the hash contains a reference to an array that contains:
Line 125  my @passwderrors = ("ok", Line 130  my @passwderrors = ("ok",
    "pwchange_failure - lcpasswd Error filename is invalid");     "pwchange_failure - lcpasswd Error filename is invalid");
   
   
 #  The array below are lcuseradd error strings.:  # This array are the errors from lcinstallfile:
   
 my $lastadderror = 13;  
 my @adderrors    = ("ok",  
     "User ID mismatch, lcuseradd must run as user www",  
     "lcuseradd Incorrect number of command line parameters must be 3",  
     "lcuseradd Incorrect number of stdinput lines, must be 3",  
     "lcuseradd Too many other simultaneous pwd changes in progress",  
     "lcuseradd User does not exist",  
     "lcuseradd Unable to make www member of users's group",  
     "lcuseradd Unable to su to root",  
     "lcuseradd Unable to set password",  
     "lcuseradd Username has invalid characters",  
     "lcuseradd Password has an invalid character",  
     "lcuseradd User already exists",  
     "lcuseradd Could not add user.",  
     "lcuseradd Password mismatch");  
   
   
   my @installerrors = ("ok",
        "Initial user id of client not that of www",
        "Usage error, not enough command line arguments",
        "Source filename does not exist",
        "Destination filename does not exist",
        "Some file operation failed",
        "Invalid table filename."
        );
   
 #  #
 #   Statistics that are maintained and dislayed in the status line.  #   Statistics that are maintained and dislayed in the status line.
Line 400  sub isClient { Line 396  sub isClient {
 #  #
 sub ReadManagerTable {  sub ReadManagerTable {
   
       &Debug("Reading manager table");
     #   Clean out the old table first..      #   Clean out the old table first..
   
    foreach my $key (keys %managers) {     foreach my $key (keys %managers) {
Line 408  sub ReadManagerTable { Line 405  sub ReadManagerTable {
   
    my $tablename = $perlvar{'lonTabDir'}."/managers.tab";     my $tablename = $perlvar{'lonTabDir'}."/managers.tab";
    if (!open (MANAGERS, $tablename)) {     if (!open (MANAGERS, $tablename)) {
       logthis('<font color="red">No manager table.  Nobody can manage!!</font>');         my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
       return;         if (&Apache::lonnet::is_LC_dns($hostname)) {
              &logthis('<font color="red">No manager table.  Nobody can manage!!</font>');
          }
          return;
    }     }
    while(my $host = <MANAGERS>) {     while(my $host = <MANAGERS>) {
       chomp($host);        chomp($host);
Line 434  sub ReadManagerTable { Line 434  sub ReadManagerTable {
          }           }
       } else {        } else {
          logthis('<font color="green"> existing host'." $host</font>\n");           logthis('<font color="green"> existing host'." $host</font>\n");
          $managers{&Apache::lonnet::get_host_ip($host)} = $host;  # Use info from cluster tab if clumemeber           $managers{&Apache::lonnet::get_host_ip($host)} = $host;  # Use info from cluster tab if cluster memeber
       }        }
    }     }
 }  }
Line 496  sub AdjustHostContents { Line 496  sub AdjustHostContents {
     my $me        = $perlvar{'lonHostID'};      my $me        = $perlvar{'lonHostID'};
   
     foreach my $line (split(/\n/,$contents)) {      foreach my $line (split(/\n/,$contents)) {
  if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/))) {   if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/) ||
                ($line =~ /^\s*\^/))) {
     chomp($line);      chomp($line);
     my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);      my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);
     if ($id eq $me) {      if ($id eq $me) {
Line 522  sub AdjustHostContents { Line 523  sub AdjustHostContents {
 }  }
 #  #
 #   InstallFile: Called to install an administrative file:  #   InstallFile: Called to install an administrative file:
 #       - The file is created with <name>.tmp  #       - The file is created int a temp directory called <name>.tmp
 #       - The <name>.tmp file is then mv'd to <name>  #       - lcinstall file is called to install the file.
 #   This lugubrious procedure is done to ensure that we are never without  #         since the web app has no direct write access to the table directory
 #   a valid, even if dated, version of the file regardless of who crashes  
 #   and when the crash occurs.  
 #  #
 #  Parameters:  #  Parameters:
 #       Name of the file  #       Name of the file
Line 534  sub AdjustHostContents { Line 533  sub AdjustHostContents {
 #  Return:  #  Return:
 #      nonzero - success.  #      nonzero - success.
 #      0       - failure and $! has an errno.  #      0       - failure and $! has an errno.
   # Assumptions:
   #    File installtion is a relatively infrequent
 #  #
 sub InstallFile {  sub InstallFile {
   
     my ($Filename, $Contents) = @_;      my ($Filename, $Contents) = @_;
     my $TempFile = $Filename.".tmp";  #     my $TempFile = $Filename.".tmp";
       my $exedir = $perlvar{'lonDaemons'};
       my $tmpdir = $exedir.'/tmp/';
       my $TempFile = $tmpdir."TempTableFile.tmp";
   
     #  Open the file for write:      #  Open the file for write:
   
Line 552  sub InstallFile { Line 556  sub InstallFile {
     print $fh ($Contents);       print $fh ($Contents); 
     $fh->close; # In case we ever have a filesystem w. locking      $fh->close; # In case we ever have a filesystem w. locking
   
     chmod(0660, $TempFile);      chmod(0664, $TempFile); # Everyone can write it.
   
     # Now we can move install the file in position.      # Use lcinstall file to put the file in the table directory...
       
     move($TempFile, $Filename);      &Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename");
       my $pf = IO::File->new("| $exedir/lcinstallfile   $TempFile $Filename > $exedir/logs/lcinstallfile.log");
       close $pf;
       my $err = $?;
       &Debug("Status is $err");
       if ($err != 0) {
    my $msg = $err;
    if ($err < @installerrors) {
       $msg = $installerrors[$err];
    }
    &logthis("Install failed for table file $Filename : $msg");
    return 0;
       }
   
       # Remove the temp file:
   
       unlink($TempFile);
   
     return 1;      return 1;
 }  }
Line 564  sub InstallFile { Line 584  sub InstallFile {
   
 #  #
 #   ConfigFileFromSelector: converts a configuration file selector  #   ConfigFileFromSelector: converts a configuration file selector
 #                 (one of host or domain at this point) into a   #                 into a configuration file pathname.
 #                 configuration file pathname.  #                 Supports the following file selectors: 
   #                 hosts, domain, dns_hosts, dns_domain  
   #
 #  #
 #  Parameters:  #  Parameters:
 #      selector  - Configuration file selector.  #      selector  - Configuration file selector.
Line 577  sub ConfigFileFromSelector { Line 599  sub ConfigFileFromSelector {
     my $tablefile;      my $tablefile;
   
     my $tabledir = $perlvar{'lonTabDir'}.'/';      my $tabledir = $perlvar{'lonTabDir'}.'/';
     if ($selector eq "hosts") {      if (($selector eq "hosts") || ($selector eq "domain") || 
  $tablefile = $tabledir."hosts.tab";          ($selector eq "dns_hosts") || ($selector eq "dns_domain")) {
     } elsif ($selector eq "domain") {   $tablefile =  $tabledir.$selector.'.tab';
  $tablefile = $tabledir."domain.tab";  
     } else {  
  return undef;  
     }      }
     return $tablefile;      return $tablefile;
   
 }  }
 #  #
 #   PushFile:  Called to do an administrative push of a file.  #   PushFile:  Called to do an administrative push of a file.
Line 605  sub ConfigFileFromSelector { Line 623  sub ConfigFileFromSelector {
 sub PushFile {  sub PushFile {
     my $request = shift;          my $request = shift;    
     my ($command, $filename, $contents) = split(":", $request, 3);      my ($command, $filename, $contents) = split(":", $request, 3);
       &Debug("PushFile");
           
     #  At this point in time, pushes for only the following tables are      #  At this point in time, pushes for only the following tables are
     #  supported:      #  supported:
     #   hosts.tab  ($filename eq host).      #   hosts.tab  ($filename eq host).
     #   domain.tab ($filename eq domain).      #   domain.tab ($filename eq domain).
       #   dns_hosts.tab ($filename eq dns_host).
       #   dns_domain.tab ($filename eq dns_domain). 
     # Construct the destination filename or reject the request.      # Construct the destination filename or reject the request.
     #      #
     # lonManage is supposed to ensure this, however this session could be      # lonManage is supposed to ensure this, however this session could be
Line 621  sub PushFile { Line 642  sub PushFile {
     if(! (defined $tablefile)) {      if(! (defined $tablefile)) {
  return "refused";   return "refused";
     }      }
     #  
     # >copy< the old table to the backup table  
     #        don't rename in case system crashes/reboots etc. in the time  
     #        window between a rename and write.  
     #  
     my $backupfile = $tablefile;  
     $backupfile    =~ s/\.tab$/.old/;  
     if(!CopyFile($tablefile, $backupfile)) {  
  &logthis('<font color="green"> CopyFile from '.$tablefile." to ".$backupfile." failed </font>");  
  return "error:$!";  
     }  
     &logthis('<font color="green"> Pushfile: backed up '  
     .$tablefile." to $backupfile</font>");  
       
     #  If the file being pushed is the host file, we adjust the entry for ourself so that the      #  If the file being pushed is the host file, we adjust the entry for ourself so that the
     #  IP will be our current IP as looked up in dns.  Note this is only 99% good as it's possible      #  IP will be our current IP as looked up in dns.  Note this is only 99% good as it's possible
     #  to conceive of conditions where we don't have a DNS entry locally.  This is possible in a       #  to conceive of conditions where we don't have a DNS entry locally.  This is possible in a 
Line 647  sub PushFile { Line 655  sub PushFile {
   
     #  Install the new file:      #  Install the new file:
   
       &logthis("Installing new $tablefile contents:\n$contents");
     if(!InstallFile($tablefile, $contents)) {      if(!InstallFile($tablefile, $contents)) {
  &logthis('<font color="red"> Pushfile: unable to install '   &logthis('<font color="red"> Pushfile: unable to install '
  .$tablefile." $! </font>");   .$tablefile." $! </font>");
  return "error:$!";   return "error:$!";
     } else {      } else {
  &logthis('<font color="green"> Installed new '.$tablefile   &logthis('<font color="green"> Installed new '.$tablefile
  ."</font>");   ." - transaction by: $clientname ($clientip)</font>");
           my $adminmail = $perlvar{'lonAdmEMail'};
           my $admindom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
           if ($admindom ne '') {
               my %domconfig =
                   &Apache::lonnet::get_dom('configuration',['contacts'],$admindom);
               if (ref($domconfig{'contacts'}) eq 'HASH') {
                   if ($domconfig{'contacts'}{'adminemail'} ne '') {
                       $adminmail = $domconfig{'contacts'}{'adminemail'};
                   }
               }
           }
           if ($adminmail =~ /^[^\@]+\@[^\@]+$/) {
               my $msg = new Mail::Send;
               $msg->to($adminmail);
               $msg->subject('LON-CAPA DNS update on '.$perlvar{'lonHostID'});
               $msg->add('Content-type','text/plain; charset=UTF-8');
               if (my $fh = $msg->open()) {
                   print $fh 'Update to '.$tablefile.' from Cluster Manager '.
                             "$clientname ($clientip)\n";
                   $fh->close;
               }
           }
     }      }
   
   
     #  Indicate success:      #  Indicate success:
     
     return "ok";      return "ok";
Line 953  sub read_profile { Line 982  sub read_profile {
  &GDBM_READER());   &GDBM_READER());
     if ($hashref) {      if ($hashref) {
         my @queries=split(/\&/,$what);          my @queries=split(/\&/,$what);
           if ($namespace eq 'roles') {
               @queries = map { &unescape($_); } @queries; 
           }
         my $qresult='';          my $qresult='';
   
  for (my $i=0;$i<=$#queries;$i++) {   for (my $i=0;$i<=$#queries;$i++) {
Line 998  sub ping_handler { Line 1030  sub ping_handler {
     my ($cmd, $tail, $client) = @_;      my ($cmd, $tail, $client) = @_;
     Debug("$cmd $tail $client .. $currenthostid:");      Debug("$cmd $tail $client .. $currenthostid:");
         
     Reply( $client,"$currenthostid\n","$cmd:$tail");      Reply( $client,\$currenthostid,"$cmd:$tail");
         
     return 1;      return 1;
 }  }
Line 1046  sub pong_handler { Line 1078  sub pong_handler {
 #  Implicit Inputs:  #  Implicit Inputs:
 #      $currenthostid - Global variable that carries the name of the host  #      $currenthostid - Global variable that carries the name of the host
 #                       known as.  #                       known as.
 #      $clientname    - Global variable that carries the name of the hsot we're connected to.  #      $clientname    - Global variable that carries the name of the host we're connected to.
 #  Returns:  #  Returns:
 #      1       - Ok to continue processing.  #      1       - Ok to continue processing.
 #      0       - Program should exit.  #      0       - Program should exit.
Line 1068  sub establish_key_handler { Line 1100  sub establish_key_handler {
     $key=substr($key,0,32);      $key=substr($key,0,32);
     my $cipherkey=pack("H32",$key);      my $cipherkey=pack("H32",$key);
     $cipher=new IDEA $cipherkey;      $cipher=new IDEA $cipherkey;
     &Reply($replyfd, "$buildkey\n", "$cmd:$tail");       &Reply($replyfd, \$buildkey, "$cmd:$tail"); 
         
     return 1;      return 1;
   
Line 1085  sub establish_key_handler { Line 1117  sub establish_key_handler {
 #  Implicit Inputs:  #  Implicit Inputs:
 #      $currenthostid - Global variable that carries the name of the host  #      $currenthostid - Global variable that carries the name of the host
 #                       known as.  #                       known as.
 #      $clientname    - Global variable that carries the name of the hsot we're connected to.  #      $clientname    - Global variable that carries the name of the host we're connected to.
 #  Returns:  #  Returns:
 #      1       - Ok to continue processing.  #      1       - Ok to continue processing.
 #      0       - Program should exit.  #      0       - Program should exit.
Line 1094  sub establish_key_handler { Line 1126  sub establish_key_handler {
 sub load_handler {  sub load_handler {
     my ($cmd, $tail, $replyfd) = @_;      my ($cmd, $tail, $replyfd) = @_;
   
   
   
    # Get the load average from /proc/loadavg and calculate it as a percentage of     # Get the load average from /proc/loadavg and calculate it as a percentage of
    # the allowed load limit as set by the perl global variable lonLoadLim     # the allowed load limit as set by the perl global variable lonLoadLim
   
Line 1105  sub load_handler { Line 1139  sub load_handler {
         
     my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};      my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
   
     &Reply( $replyfd, "$loadpercent\n", "$cmd:$tail");      &Reply( $replyfd, \$loadpercent, "$cmd:$tail");
         
     return 1;      return 1;
 }  }
Line 1122  sub load_handler { Line 1156  sub load_handler {
 #  Implicit Inputs:  #  Implicit Inputs:
 #      $currenthostid - Global variable that carries the name of the host  #      $currenthostid - Global variable that carries the name of the host
 #                       known as.  #                       known as.
 #      $clientname    - Global variable that carries the name of the hsot we're connected to.  #      $clientname    - Global variable that carries the name of the host we're connected to.
 #  Returns:  #  Returns:
 #      1       - Ok to continue processing.  #      1       - Ok to continue processing.
 #      0       - Program should exit  #      0       - Program should exit
Line 1135  sub user_load_handler { Line 1169  sub user_load_handler {
     my ($cmd, $tail, $replyfd) = @_;      my ($cmd, $tail, $replyfd) = @_;
   
     my $userloadpercent=&Apache::lonnet::userload();      my $userloadpercent=&Apache::lonnet::userload();
     &Reply($replyfd, "$userloadpercent\n", "$cmd:$tail");      &Reply($replyfd, \$userloadpercent, "$cmd:$tail");
           
     return 1;      return 1;
 }  }
Line 1178  sub user_authorization_type { Line 1212  sub user_authorization_type {
  } else {   } else {
             $type .= ':';              $type .= ':';
         }          }
  &Reply( $replyfd, "$type\n", $userinput);   &Reply( $replyfd, \$type, $userinput);
     }      }
       
     return 1;      return 1;
Line 1200  sub user_authorization_type { Line 1234  sub user_authorization_type {
 #    a reply is written to the client.  #    a reply is written to the client.
 sub push_file_handler {  sub push_file_handler {
     my ($cmd, $tail, $client) = @_;      my ($cmd, $tail, $client) = @_;
       &Debug("In push file handler");
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
   
     # At this time we only know that the IP of our partner is a valid manager      # At this time we only know that the IP of our partner is a valid manager
Line 1208  sub push_file_handler { Line 1242  sub push_file_handler {
     # spoofing).      # spoofing).
   
     my $cert = &GetCertificate($userinput);      my $cert = &GetCertificate($userinput);
     if(&ValidManager($cert)) {       if(&ValidManager($cert)) {
    &Debug("Valid manager: $client");
   
  # Now presumably we have the bona fides of both the peer host and the   # Now presumably we have the bona fides of both the peer host and the
  # process making the request.   # process making the request.
               
  my $reply = &PushFile($userinput);   my $reply = &PushFile($userinput);
  &Reply($client, "$reply\n", $userinput);   &Reply($client, \$reply, $userinput);
   
     } else {      } else {
    &logthis("push_file_handler $client is not valid");
  &Failure( $client, "refused\n", $userinput);   &Failure( $client, "refused\n", $userinput);
     }       } 
     return 1;      return 1;
 }  }
 &register_handler("pushfile", \&push_file_handler, 1, 0, 1);  &register_handler("pushfile", \&push_file_handler, 1, 0, 1);
   
   # The du_handler routine should be considered obsolete and is retained
   # for communication with legacy servers.  Please see the du2_handler.
 #  #
 #   du  - list the disk usuage of a directory recursively.   #   du  - list the disk usage of a directory recursively. 
 #      #    
 #   note: stolen code from the ls file handler  #   note: stolen code from the ls file handler
 #   under construction by Rick Banghart   #   under construction by Rick Banghart 
Line 1266  sub du_handler { Line 1304  sub du_handler {
  chdir($ududir);   chdir($ududir);
  find($code,$ududir);   find($code,$ududir);
  $total_size=int($total_size/1024);   $total_size=int($total_size/1024);
  &Reply($client,"$total_size\n","$cmd:$ududir");   &Reply($client,\$total_size,"$cmd:$ududir");
     } else {      } else {
  &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir");    &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir"); 
     }      }
Line 1274  sub du_handler { Line 1312  sub du_handler {
 }  }
 &register_handler("du", \&du_handler, 0, 1, 0);  &register_handler("du", \&du_handler, 0, 1, 0);
   
   # Please also see the du_handler, which is obsoleted by du2. 
   # du2_handler differs from du_handler in that required path to directory
   # provided by &propath() is prepended in the handler instead of on the 
   # client side.
 #  #
 # The ls_handler routine should be considered obosolete and is retained  #   du2  - list the disk usage of a directory recursively.
 # for communication with legacy servers.  Please see the ls2_handler.  #
   # Parameters:
   #    $cmd        - The command that dispatched us (du).
   #    $tail       - The tail of the request that invoked us.
   #                  $tail is a : separated list of the following:
   #                   - $ududir - directory path to list (before prepending)
   #                   - $getpropath = 1 if &propath() should prepend
   #                   - $uname - username to use for &propath or user dir
   #                   - $udom - domain to use for &propath or user dir
   #                   All are escaped.
   #    $client     - Socket open on the client.
   # Returns:
   #     1 - indicating that the daemon should not disconnect.
   # Side Effects:
   #   The reply is written to $client.
   #
   
   sub du2_handler {
       my ($cmd, $tail, $client) = @_;
       my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail));
       my $userinput = "$cmd:$tail";
       if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) {
           &Failure($client,"refused\n","$cmd:$tail");
           return 1;
       }
       if ($getpropath) {
           if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
               $ududir = &propath($udom,$uname).'/'.$ududir;
           } else {
               &Failure($client,"refused\n","$cmd:$tail");
               return 1;
           }
       }
       #  Since $ududir could have some nasties in it,
       #  we will require that ududir is a valid
       #  directory.  Just in case someone tries to
       #  slip us a  line like .;(cd /home/httpd rm -rf*)
       #  etc.
       #
       if (-d $ududir) {
           my $total_size=0;
           my $code=sub {
               if ($_=~/\.\d+\./) { return;}
               if ($_=~/\.meta$/) { return;}
               if (-d $_)         { return;}
               $total_size+=(stat($_))[7];
           };
           chdir($ududir);
           find($code,$ududir);
           $total_size=int($total_size/1024);
           &Reply($client,\$total_size,"$cmd:$ududir");
       } else {
           &Failure($client, "bad_directory:$ududir\n","$cmd:$tail");
       }
       return 1;
   }
   &register_handler("du2", \&du2_handler, 0, 1, 0);
   
   #
   # The ls_handler routine should be considered obsolete and is retained
   # for communication with legacy servers.  Please see the ls3_handler.
 #  #
 #   ls  - list the contents of a directory.  For each file in the  #   ls  - list the contents of a directory.  For each file in the
 #    selected directory the filename followed by the full output of  #    selected directory the filename followed by the full output of
Line 1335  sub ls_handler { Line 1437  sub ls_handler {
  $ulsout='no_such_dir';   $ulsout='no_such_dir';
     }      }
     if ($ulsout eq '') { $ulsout='empty'; }      if ($ulsout eq '') { $ulsout='empty'; }
     &Reply($client, "$ulsout\n", $userinput); # This supports debug logging.      &Reply($client, \$ulsout, $userinput); # This supports debug logging.
           
     return 1;      return 1;
   
 }  }
 &register_handler("ls", \&ls_handler, 0, 1, 0);  &register_handler("ls", \&ls_handler, 0, 1, 0);
   
 #  # The ls2_handler routine should be considered obsolete and is retained
 # Please also see the ls_handler, which this routine obosolets.  # for communication with legacy servers.  Please see the ls3_handler.
   # Please also see the ls_handler, which was itself obsoleted by ls2.
 # ls2_handler differs from ls_handler in that it escapes its return   # ls2_handler differs from ls_handler in that it escapes its return 
 # values before concatenating them together with ':'s.  # values before concatenating them together with ':'s.
 #  #
Line 1404  sub ls2_handler { Line 1507  sub ls2_handler {
         $ulsout='no_such_dir';          $ulsout='no_such_dir';
    }     }
    if ($ulsout eq '') { $ulsout='empty'; }     if ($ulsout eq '') { $ulsout='empty'; }
    &Reply($client, "$ulsout\n", $userinput); # This supports debug logging.     &Reply($client, \$ulsout, $userinput); # This supports debug logging.
    return 1;     return 1;
 }  }
 &register_handler("ls2", \&ls2_handler, 0, 1, 0);  &register_handler("ls2", \&ls2_handler, 0, 1, 0);
   #
   #   ls3  - list the contents of a directory.  For each file in the
   #    selected directory the filename followed by the full output of
   #    the stat function is returned.  The returned info for each
   #    file are separated by ':'.  The stat fields are separated by &'s.
   # Parameters:
   #    $cmd        - The command that dispatched us (ls).
   #    $tail       - The tail of the request that invoked us.
   #                  $tail is a : separated list of the following:
   #                   - $ulsdir - directory path to list (before prepending)
   #                   - $getpropath = 1 if &propath() should prepend
   #                   - $getuserdir = 1 if path to user dir in lonUsers should
   #                                     prepend
   #                   - $alternate_root - path to prepend
   #                   - $uname - username to use for &propath or user dir
   #                   - $udom - domain to use for &propath or user dir
   #            All of these except $getpropath and &getuserdir are escaped.    
   #                  no_such_dir.
   #    $client     - Socket open on the client.
   # Returns:
   #     1 - indicating that the daemon should not disconnect.
   # Side Effects:
   #   The reply is written to $client.
   #
   
   sub ls3_handler {
       my ($cmd, $tail, $client) = @_;
       my $userinput = "$cmd:$tail";
       my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) =
           split(/:/,$tail);
       if (defined($ulsdir)) {
           $ulsdir = &unescape($ulsdir);
       }
       if (defined($alternate_root)) {
           $alternate_root = &unescape($alternate_root);
       }
       if (defined($uname)) {
           $uname = &unescape($uname);
       }
       if (defined($udom)) {
           $udom = &unescape($udom);
       }
   
       my $dir_root = $perlvar{'lonDocRoot'};
       if ($getpropath) {
           if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
               $dir_root = &propath($udom,$uname);
               $dir_root =~ s/\/$//;
           } else {
               &Failure($client,"refused\n","$cmd:$tail");
               return 1;
           }
       } elsif ($getuserdir) {
           if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
               my $subdir=$uname.'__';
               $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
               $dir_root = $Apache::lonnet::perlvar{'lonUsersDir'}
                          ."/$udom/$subdir/$uname";
           } else {
               &Failure($client,"refused\n","$cmd:$tail");
               return 1;
           }
       } elsif ($alternate_root ne '') {
           $dir_root = $alternate_root;
       }
       if (($dir_root ne '') && ($dir_root ne '/')) {
           if ($ulsdir =~ /^\//) {
               $ulsdir = $dir_root.$ulsdir;
           } else {
               $ulsdir = $dir_root.'/'.$ulsdir;
           }
       }
       my $obs;
       my $rights;
       my $ulsout='';
       my $ulsfn;
       if (-e $ulsdir) {
           if(-d $ulsdir) {
               if (opendir(LSDIR,$ulsdir)) {
                   while ($ulsfn=readdir(LSDIR)) {
                       undef($obs);
                       undef($rights);
                       my @ulsstats=stat($ulsdir.'/'.$ulsfn);
                       #We do some obsolete checking here
                       if(-e $ulsdir.'/'.$ulsfn.".meta") {
                           open(FILE, $ulsdir.'/'.$ulsfn.".meta");
                           my @obsolete=<FILE>;
                           foreach my $obsolete (@obsolete) {
                               if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
                               if($obsolete =~ m|(<copyright>)(default)|) {
                                   $rights = 1;
                               }
                           }
                       }
                       my $tmp = $ulsfn.'&'.join('&',@ulsstats);
                       if ($obs    eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
                       if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
                       $ulsout.= &escape($tmp).':';
                   }
                   closedir(LSDIR);
               }
           } else {
               my @ulsstats=stat($ulsdir);
               $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
           }
       } else {
           $ulsout='no_such_dir';
       }
       if ($ulsout eq '') { $ulsout='empty'; }
       &Reply($client, \$ulsout, $userinput); # This supports debug logging.
       return 1;
   }
   &register_handler("ls3", \&ls3_handler, 0, 1, 0);
   
   sub read_lonnet_global {
       my ($cmd,$tail,$client) = @_;
       my $userinput = "$cmd:$tail";
       my $requested = &Apache::lonnet::thaw_unescape($tail);
       my $result;
       my %packagevars = (
                           spareid => \%Apache::lonnet::spareid,
                           perlvar => \%Apache::lonnet::perlvar,
                         );
       my %limit_to = (
                       perlvar => {
                                    lonOtherAuthen => 1,
                                    lonBalancer    => 1,
                                    lonVersion     => 1,
                                    lonSysEMail    => 1,
                                    lonHostID      => 1,
                                    lonRole        => 1,
                                    lonDefDomain   => 1,
                                    lonLoadLim     => 1,
                                    lonUserLoadLim => 1,
                                  }
                     );
       if (ref($requested) eq 'HASH') {
           foreach my $what (keys(%{$requested})) {
               my $response;
               my $items = {};
               if (exists($packagevars{$what})) {
                   if (ref($limit_to{$what}) eq 'HASH') {
                       foreach my $varname (keys(%{$packagevars{$what}})) {
                           if ($limit_to{$what}{$varname}) {
                               $items->{$varname} = $packagevars{$what}{$varname};
                           }
                       }
                   } else {
                       $items = $packagevars{$what};
                   }
                   if ($what eq 'perlvar') {
                       if (!exists($packagevars{$what}{'lonBalancer'})) {
                           if ($dist =~ /^(centos|rhes|fedora|scientific)/) {
                               my $othervarref=LONCAPA::Configuration::read_conf('httpd.conf');
                               if (ref($othervarref) eq 'HASH') {
                                   $items->{'lonBalancer'} = $othervarref->{'lonBalancer'};
                               }
                           }
                       }
                   }
                   $response = &Apache::lonnet::freeze_escape($items);
               }
               $result .= &escape($what).'='.$response.'&';
           }
       }
       $result =~ s/\&$//;
       &Reply($client,\$result,$userinput);
       return 1;
   }
   &register_handler("readlonnetglobal", \&read_lonnet_global, 0, 1, 0);
   
   sub server_devalidatecache_handler {
       my ($cmd,$tail,$client) = @_;
       my $userinput = "$cmd:$tail";
       my ($name,$id) = map { &unescape($_); } split(/:/,$tail);
       &Apache::lonnet::devalidate_cache_new($name,$id);
       my $result = 'ok';
       &Reply($client,\$result,$userinput);
       return 1;
   }
   &register_handler("devalidatecache", \&server_devalidatecache_handler, 0, 1, 0);
   
   sub server_timezone_handler {
       my ($cmd,$tail,$client) = @_;
       my $userinput = "$cmd:$tail";
       my $timezone;
       my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE
       my $tzfile = '/etc/timezone'; # Debian/Ubuntu
       if (-e $clockfile) {
           if (open(my $fh,"<$clockfile")) {
               while (<$fh>) {
                   next if (/^[\#\s]/);
                   if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) {
                       $timezone = $1;
                       last;
                   }
               }
               close($fh);
           }
       } elsif (-e $tzfile) {
           if (open(my $fh,"<$tzfile")) {
               $timezone = <$fh>;
               close($fh);
               chomp($timezone);
               if ($timezone =~ m{^Etc/(\w+)$}) {
                   $timezone = $1;
               }
           }
       }
       &Reply($client,\$timezone,$userinput); # This supports debug logging.
       return 1;
   }
   &register_handler("servertimezone", \&server_timezone_handler, 0, 1, 0);
   
   sub server_loncaparev_handler {
       my ($cmd,$tail,$client) = @_;
       my $userinput = "$cmd:$tail";
       &Reply($client,\$perlvar{'lonVersion'},$userinput);
       return 1;
   }
   &register_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);
   
   sub server_homeID_handler {
       my ($cmd,$tail,$client) = @_;
       my $userinput = "$cmd:$tail";
       &Reply($client,\$perlvar{'lonHostID'},$userinput);
       return 1;
   }
   &register_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0);
   
   sub server_distarch_handler {
       my ($cmd,$tail,$client) = @_;
       my $userinput = "$cmd:$tail";
       my $reply = &distro_and_arch();
       &Reply($client,\$reply,$userinput);
       return 1;
   }
   &register_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0);
   
 #   Process a reinit request.  Reinit requests that either  #   Process a reinit request.  Reinit requests that either
 #   lonc or lond be reinitialized so that an updated   #   lonc or lond be reinitialized so that an updated 
Line 1432  sub reinit_process_handler { Line 1773  sub reinit_process_handler {
     if(&ValidManager($cert)) {      if(&ValidManager($cert)) {
  chomp($userinput);   chomp($userinput);
  my $reply = &ReinitProcess($userinput);   my $reply = &ReinitProcess($userinput);
  &Reply( $client,  "$reply\n", $userinput);   &Reply( $client,  \$reply, $userinput);
     } else {      } else {
  &Failure( $client, "refused\n", $userinput);   &Failure( $client, "refused\n", $userinput);
     }      }
Line 1516  sub authenticate_handler { Line 1857  sub authenticate_handler {
     #  udom    - User's domain.      #  udom    - User's domain.
     #  uname   - Username.      #  uname   - Username.
     #  upass   - User's password.      #  upass   - User's password.
       #  checkdefauth - Pass to validate_user() to try authentication
       #                 with default auth type(s) if no user account.
       #  clientcancheckhost - Passed by clients with functionality in lonauth.pm
       #                       to check if session can be hosted.
           
     my ($udom,$uname,$upass)=split(/:/,$tail);      my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail);
     &Debug(" Authenticate domain = $udom, user = $uname, password = $upass");      &Debug(" Authenticate domain = $udom, user = $uname, password = $upass,  checkdefauth = $checkdefauth");
     chomp($upass);      chomp($upass);
     $upass=&unescape($upass);      $upass=&unescape($upass);
   
     my $pwdcorrect = &validate_user($udom, $uname, $upass);      my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);
     if($pwdcorrect) {      if($pwdcorrect) {
  &Reply( $client, "authorized\n", $userinput);          my $canhost = 1;
           unless ($clientcancheckhost) {
               my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
               my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
               my @intdoms;
               my $internet_names = &Apache::lonnet::get_internet_names($clientname);
               if (ref($internet_names) eq 'ARRAY') {
                   @intdoms = @{$internet_names};
               }
               unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
                   my ($remote,$hosted);
                   my $remotesession = &get_usersession_config($udom,'remotesession');
                   if (ref($remotesession) eq 'HASH') {
                       $remote = $remotesession->{'remote'}
                   }
                   my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
                   if (ref($hostedsession) eq 'HASH') {
                       $hosted = $hostedsession->{'hosted'};
                   }
                   my $loncaparev = $clientversion;
                   if ($loncaparev eq '') {
                       $loncaparev = $Apache::lonnet::loncaparevs{$clientname};
                   }
                   $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
                                                                $loncaparev,
                                                                $remote,$hosted);
               }
           }
           if ($canhost) {               
               &Reply( $client, "authorized\n", $userinput);
           } else {
               &Reply( $client, "not_allowed_to_host\n", $userinput);
           }
  #   #
  #  Bad credentials: Failed to authorize   #  Bad credentials: Failed to authorize
  #   #
Line 1569  sub change_password_handler { Line 1946  sub change_password_handler {
     #  npass - New password.      #  npass - New password.
     #  context - Context in which this was called       #  context - Context in which this was called 
     #            (preferences or reset_by_email).      #            (preferences or reset_by_email).
       #  lonhost - HostID of server where request originated 
         
     my ($udom,$uname,$upass,$npass,$context)=split(/:/,$tail);      my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);
   
     $upass=&unescape($upass);      $upass=&unescape($upass);
     $npass=&unescape($npass);      $npass=&unescape($npass);
Line 1579  sub change_password_handler { Line 1957  sub change_password_handler {
     # First require that the user can be authenticated with their      # First require that the user can be authenticated with their
     # old password unless context was 'reset_by_email':      # old password unless context was 'reset_by_email':
           
     my $validated;      my ($validated,$failure);
     if ($context eq 'reset_by_email') {      if ($context eq 'reset_by_email') {
         $validated = 1;          if ($lonhost eq '') {
               $failure = 'invalid_client';
           } else {
               $validated = 1;
           }
     } else {      } else {
         $validated = &validate_user($udom, $uname, $upass);          $validated = &validate_user($udom, $uname, $upass);
     }      }
Line 1595  sub change_password_handler { Line 1977  sub change_password_handler {
     $salt=substr($salt,6,2);      $salt=substr($salt,6,2);
     my $ncpass=crypt($npass,$salt);      my $ncpass=crypt($npass,$salt);
     if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {      if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
  &logthis("Result of password change for "   my $msg="Result of password change for $uname: pwchange_success";
  ."$uname: pwchange_success");                  if ($lonhost) {
                       $msg .= " - request originated from: $lonhost";
                   }
                   &logthis($msg);
  &Reply($client, "ok\n", $userinput);   &Reply($client, "ok\n", $userinput);
     } else {      } else {
  &logthis("Unable to open $uname passwd "                  &logthis("Unable to open $uname passwd "               
Line 1607  sub change_password_handler { Line 1992  sub change_password_handler {
     my $result = &change_unix_password($uname, $npass);      my $result = &change_unix_password($uname, $npass);
     &logthis("Result of password change for $uname: ".      &logthis("Result of password change for $uname: ".
      $result);       $result);
     &Reply($client, "$result\n", $userinput);      &Reply($client, \$result, $userinput);
  } else {   } else {
     # this just means that the current password mode is not      # this just means that the current password mode is not
     # one we know how to change (e.g the kerberos auth modes or      # one we know how to change (e.g the kerberos auth modes or
Line 1617  sub change_password_handler { Line 2002  sub change_password_handler {
  }     }  
   
     } else {      } else {
  &Failure( $client, "non_authorized\n", $userinput);   if ($failure eq '') {
       $failure = 'non_authorized';
    }
    &Failure( $client, "$failure\n", $userinput);
     }      }
   
     return 1;      return 1;
Line 1667  sub add_user_handler { Line 2055  sub add_user_handler {
     ."makeuser";      ."makeuser";
     }      }
     unless ($fperror) {      unless ($fperror) {
  my $result=&make_passwd_file($uname, $umode,$npass, $passfilename);   my $result=&make_passwd_file($uname,$udom,$umode,$npass, $passfilename);
  &Reply($client, $result, $userinput);     #BUGBUG - could be fail   &Reply($client,\$result, $userinput);     #BUGBUG - could be fail
     } else {      } else {
  &Failure($client, "$fperror\n", $userinput);   &Failure($client, \$fperror, $userinput);
     }      }
  }   }
  umask($oldumask);   umask($oldumask);
Line 1728  sub change_authentication_handler { Line 2116  sub change_authentication_handler {
  my $passfilename = &password_path($udom, $uname);   my $passfilename = &password_path($udom, $uname);
  if ($passfilename) { # Not allowed to create a new user!!   if ($passfilename) { # Not allowed to create a new user!!
     # If just changing the unix passwd. need to arrange to run      # If just changing the unix passwd. need to arrange to run
     # passwd since otherwise make_passwd_file will run      # passwd since otherwise make_passwd_file will fail as 
     # lcuseradd which fails if an account already exists      # creation of unix authenticated users is no longer supported
     # (to prevent an unscrupulous LONCAPA admin from stealing              # except from the command line, when running make_domain_coordinator.pl
     # an existing account by overwriting it as a LonCAPA account).  
   
     if(($oldauth =~/^unix/) && ($umode eq "unix")) {      if(($oldauth =~/^unix/) && ($umode eq "unix")) {
  my $result = &change_unix_password($uname, $npass);   my $result = &change_unix_password($uname, $npass);
  &logthis("Result of password change for $uname: ".$result);   &logthis("Result of password change for $uname: ".$result);
  if ($result eq "ok") {   if ($result eq "ok") {
     &Reply($client, "$result\n")      &Reply($client, \$result);
  } else {   } else {
     &Failure($client, "$result\n");      &Failure($client, \$result);
  }   }
     } else {      } else {
  my $result=&make_passwd_file($uname, $umode,$npass,$passfilename);   my $result=&make_passwd_file($uname,$udom,$umode,$npass,$passfilename);
  #   #
  #  If the current auth mode is internal, and the old auth mode was   #  If the current auth mode is internal, and the old auth mode was
  #  unix, or krb*,  and the user is an author for this domain,   #  unix, or krb*,  and the user is an author for this domain,
  #  re-run manage_permissions for that role in order to be able   #  re-run manage_permissions for that role in order to be able
  #  to take ownership of the construction space back to www:www   #  to take ownership of the construction space back to www:www
  #   #
   
   
  if( (($oldauth =~ /^unix/) && ($umode eq "internal")) ||   &Reply($client, \$result, $userinput);
     (($oldauth =~ /^internal/) && ($umode eq "unix")) ) {   
     if(&is_author($udom, $uname)) {  
  &Debug(" Need to manage author permissions...");  
  &manage_permissions("/$udom/_au", $udom, $uname, "$umode:");  
     }  
  }  
  &Reply($client, $result, $userinput);  
     }      }
                 
   
Line 1804  sub is_home_handler { Line 2184  sub is_home_handler {
 &register_handler("home", \&is_home_handler, 0,1,0);  &register_handler("home", \&is_home_handler, 0,1,0);
   
 #  #
 #   Process an update request for a resource?? I think what's going on here is  #   Process an update request for a resource.
 #   that a resource has been modified that we hold a subscription to.  #   A resource has been modified that we hold a subscription to.
 #   If the resource is not local, then we must update, or at least invalidate our  #   If the resource is not local, then we must update, or at least invalidate our
 #   cached copy of the resource.   #   cached copy of the resource. 
 #   FUTURE WORK:  
 #      I need to look at this logic carefully.  My druthers would be to follow  
 #      typical caching logic, and simple invalidate the cache, drop any subscription  
 #      an let the next fetch start the ball rolling again... however that may  
 #      actually be more difficult than it looks given the complex web of  
 #      proxy servers.  
 # Parameters:  # Parameters:
 #    $cmd      - The command that got us here.  #    $cmd      - The command that got us here.
 #    $tail     - Tail of the command (remaining parameters).  #    $tail     - Tail of the command (remaining parameters).
Line 1837  sub update_resource_handler { Line 2211  sub update_resource_handler {
     my $ownership=ishome($fname);      my $ownership=ishome($fname);
     if ($ownership eq 'not_owner') {      if ($ownership eq 'not_owner') {
  if (-e $fname) {   if (-e $fname) {
               # Delete preview file, if exists
               unlink("$fname.tmp");
               # Get usage stats
     my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,      my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
  $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);   $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
     my $now=time;      my $now=time;
     my $since=$now-$atime;      my $since=$now-$atime;
               # If the file has not been used within lonExpire seconds,
               # unsubscribe from it and delete local copy
     if ($since>$perlvar{'lonExpire'}) {      if ($since>$perlvar{'lonExpire'}) {
  my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");   my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
  &devalidate_meta_cache($fname);   &devalidate_meta_cache($fname);
  unlink("$fname");   unlink("$fname");
  unlink("$fname.meta");   unlink("$fname.meta");
     } else {      } else {
               # Yes, this is in active use. Get a fresh copy. Since it might be in
               # very active use and huge (like a movie), copy it to "in.transfer" filename first.
  my $transname="$fname.in.transfer";   my $transname="$fname.in.transfer";
  my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");   my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
  my $response;   my $response;
  alarm(120);  # FIXME: cannot replicate files that take more than two minutes to transfer?
   # alarm(120);
   # FIXME: this should use the LWP mechanism, not internal alarms.
                   alarm(1200);
  {   {
     my $ua=new LWP::UserAgent;      my $ua=new LWP::UserAgent;
     my $request=new HTTP::Request('GET',"$remoteurl");      my $request=new HTTP::Request('GET',"$remoteurl");
Line 1858  sub update_resource_handler { Line 2242  sub update_resource_handler {
  }   }
  alarm(0);   alarm(0);
  if ($response->is_error()) {   if ($response->is_error()) {
   # FIXME: we should probably clean up here instead of just whine
     unlink($transname);      unlink($transname);
     my $message=$response->status_line;      my $message=$response->status_line;
     &logthis("LWP GET: $message for $fname ($remoteurl)");      &logthis("LWP GET: $message for $fname ($remoteurl)");
  } else {   } else {
     if ($remoteurl!~/\.meta$/) {      if ($remoteurl!~/\.meta$/) {
   # FIXME: isn't there an internal LWP mechanism for this?
  alarm(120);   alarm(120);
  {   {
     my $ua=new LWP::UserAgent;      my $ua=new LWP::UserAgent;
Line 1874  sub update_resource_handler { Line 2260  sub update_resource_handler {
  }   }
  alarm(0);   alarm(0);
     }      }
                       # we successfully transfered, copy file over to real name
     rename($transname,$fname);      rename($transname,$fname);
     &devalidate_meta_cache($fname);      &devalidate_meta_cache($fname);
  }   }
Line 1935  sub fetch_user_file_handler { Line 2322  sub fetch_user_file_handler {
   
  my $destname=$udir.'/'.$ufile;   my $destname=$udir.'/'.$ufile;
  my $transname=$udir.'/'.$ufile.'.in.transit';   my $transname=$udir.'/'.$ufile.'.in.transit';
  my $remoteurl='http://'.$clientip.'/userfiles/'.$fname;          my $clientprotocol=$Apache::lonnet::protocol{$clientname};
           $clientprotocol = 'http' if ($clientprotocol ne 'https');
    my $clienthost = &Apache::lonnet::hostname($clientname);
    my $remoteurl=$clientprotocol.'://'.$clienthost.'/userfiles/'.$fname;
  my $response;   my $response;
  Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");   Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
  alarm(120);   alarm(120);
Line 1957  sub fetch_user_file_handler { Line 2347  sub fetch_user_file_handler {
  unlink($transname);   unlink($transname);
  &Failure($client, "failed\n", $userinput);   &Failure($client, "failed\n", $userinput);
     } else {      } else {
                   if ($fname =~ /^default.+\.(page|sequence)$/) {
                       my ($major,$minor) = split(/\./,$clientversion);
                       if (($major < 2) || ($major == 2 && $minor < 11)) {
                           my $now = time;
                           &Apache::lonnet::do_cache_new('crschange',$udom.'_'.$uname,$now,600);
                           my $key = &escape('internal.contentchange');
                           my $what = "$key=$now";
                           my $hashref = &tie_user_hash($udom,$uname,'environment',
                                                        &GDBM_WRCREAT(),"P",$what);
                           if ($hashref) {
                               $hashref->{$key}=$now;
                               if (!&untie_user_hash($hashref)) {
                                   &logthis("error: ".($!+0)." untie (GDBM) failed ".
                                            "when updating internal.contentchange");
                               }
                           }
                       }
                   }
  &Reply($client, "ok\n", $userinput);   &Reply($client, "ok\n", $userinput);
     }      }
  }      }   
Line 2111  sub user_has_session_handler { Line 2519  sub user_has_session_handler {
   
     my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));      my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
           
     &logthis("Looking for $udom $uname");  
     opendir(DIR,$perlvar{'lonIDsDir'});      opendir(DIR,$perlvar{'lonIDsDir'});
     my $filename;      my $filename;
     while ($filename=readdir(DIR)) {      while ($filename=readdir(DIR)) {
Line 2143  sub token_auth_user_file_handler { Line 2550  sub token_auth_user_file_handler {
     my ($fname, $session) = split(/:/, $tail);      my ($fname, $session) = split(/:/, $tail);
           
     chomp($session);      chomp($session);
     my $reply="non_auth\n";      my $reply="non_auth";
     my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';      my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
     if (open(ENVIN,"$file")) {      if (open(ENVIN,"$file")) {
  flock(ENVIN,LOCK_SH);   flock(ENVIN,LOCK_SH);
  tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);   tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
  if (exists($disk_env{"userfile.$fname"})) {   if (exists($disk_env{"userfile.$fname"})) {
     $reply="ok\n";      $reply="ok";
  } else {   } else {
     foreach my $envname (keys(%disk_env)) {      foreach my $envname (keys(%disk_env)) {
  if ($envname=~ m|^userfile\.\Q$fname\E|) {   if ($envname=~ m|^userfile\.\Q$fname\E|) {
     $reply="ok\n";      $reply="ok";
     last;      last;
  }   }
     }      }
  }   }
  untie(%disk_env);   untie(%disk_env);
  close(ENVIN);   close(ENVIN);
  &Reply($client, $reply, "$cmd:$tail");   &Reply($client, \$reply, "$cmd:$tail");
     } else {      } else {
  &Failure($client, "invalid_token\n", "$cmd:$tail");   &Failure($client, "invalid_token\n", "$cmd:$tail");
     }      }
Line 2584  sub get_profile_entry { Line 2991  sub get_profile_entry {
     my ($udom,$uname,$namespace,$what) = split(/:/,$tail);      my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
     chomp($what);      chomp($what);
   
   
     my $replystring = read_profile($udom, $uname, $namespace, $what);      my $replystring = read_profile($udom, $uname, $namespace, $what);
     my ($first) = split(/:/,$replystring);      my ($first) = split(/:/,$replystring);
     if($first ne "error") {      if($first ne "error") {
  &Reply($client, "$replystring\n", $userinput);   &Reply($client, \$replystring, $userinput);
     } else {      } else {
  &Failure($client, $replystring." while attempting get\n", $userinput);   &Failure($client, $replystring." while attempting get\n", $userinput);
     }      }
Line 2727  sub get_profile_keys { Line 3135  sub get_profile_keys {
  }   }
  if (&untie_user_hash($hashref)) {   if (&untie_user_hash($hashref)) {
     $qresult=~s/\&$//;      $qresult=~s/\&$//;
     &Reply($client, "$qresult\n", $userinput);      &Reply($client, \$qresult, $userinput);
  } else {   } else {
     &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".      &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
     "while attempting keys\n", $userinput);      "while attempting keys\n", $userinput);
Line 2797  sub dump_profile_database { Line 3205  sub dump_profile_database {
  }   }
     }      }
     chop($qresult);      chop($qresult);
     &Reply($client , "$qresult\n", $userinput);      &Reply($client , \$qresult, $userinput);
  } else {   } else {
     &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".      &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
      "while attempting currentdump\n", $userinput);       "while attempting currentdump\n", $userinput);
Line 2829  sub dump_profile_database { Line 3237  sub dump_profile_database {
 #                                             that is matched against  #                                             that is matched against
 #                                             database keywords to do  #                                             database keywords to do
 #                                             selective dumps.  #                                             selective dumps.
   #                               range       - optional range of entries
   #                                             e.g., 10-20 would return the
   #                                             10th to 19th items, etc.  
 #   $client                   - Channel open on the client.  #   $client                   - Channel open on the client.
 # Returns:  # Returns:
 #    1    - Continue processing.  #    1    - Continue processing.
Line 2838  sub dump_profile_database { Line 3249  sub dump_profile_database {
 sub dump_with_regexp {  sub dump_with_regexp {
     my ($cmd, $tail, $client) = @_;      my ($cmd, $tail, $client) = @_;
   
       my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
   
     my $userinput = "$cmd:$tail";      if ($res =~ /^error:/) {
           &Failure($client, \$res, "$cmd:$tail");
     my ($udom,$uname,$namespace,$regexp,$range)=split(/:/,$tail);  
     if (defined($regexp)) {  
  $regexp=&unescape($regexp);  
     } else {  
  $regexp='.';  
     }  
     my ($start,$end);  
     if (defined($range)) {  
  if ($range =~/^(\d+)\-(\d+)$/) {  
     ($start,$end) = ($1,$2);  
  } elsif ($range =~/^(\d+)$/) {  
     ($start,$end) = (0,$1);  
  } else {  
     undef($range);  
  }  
     }  
     my $hashref = &tie_user_hash($udom, $uname, $namespace,  
  &GDBM_READER());  
     if ($hashref) {  
         my $qresult='';  
  my $count=0;  
  while (my ($key,$value) = each(%$hashref)) {  
     if ($regexp eq '.') {  
  $count++;  
  if (defined($range) && $count >= $end)   { last; }  
  if (defined($range) && $count <  $start) { next; }  
  $qresult.=$key.'='.$value.'&';  
     } else {  
  my $unescapeKey = &unescape($key);  
  if (eval('$unescapeKey=~/$regexp/')) {  
     $count++;  
     if (defined($range) && $count >= $end)   { last; }  
     if (defined($range) && $count <  $start) { next; }  
     $qresult.="$key=$value&";  
  }  
     }  
  }  
  if (&untie_user_hash($hashref)) {  
     chop($qresult);  
     &Reply($client, "$qresult\n", $userinput);  
  } else {  
     &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".  
      "while attempting dump\n", $userinput);  
  }  
     } else {      } else {
  &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".          &Reply($client, \$res, "$cmd:$tail");
  "while attempting dump\n", $userinput);  
     }      }
   
     return 1;      return 1;
Line 3088  sub restore_handler { Line 3455  sub restore_handler {
  }   }
  if (&untie_user_hash($hashref)) {   if (&untie_user_hash($hashref)) {
     $qresult=~s/\&$//;      $qresult=~s/\&$//;
     &Reply( $client, "$qresult\n", $userinput);      &Reply( $client, \$qresult, $userinput);
  } else {   } else {
     &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".      &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
     "while attempting restore\n", $userinput);      "while attempting restore\n", $userinput);
Line 3169  sub retrieve_chat_handler { Line 3536  sub retrieve_chat_handler {
  $reply.=&escape($_).':';   $reply.=&escape($_).':';
     }      }
     $reply=~s/\:$//;      $reply=~s/\:$//;
     &Reply($client, $reply."\n", $userinput);      &Reply($client, \$reply, $userinput);
   
   
     return 1;      return 1;
Line 3313  sub put_course_id_handler { Line 3680  sub put_course_id_handler {
                     my @new_items = split(/:/,$courseinfo,-1);                      my @new_items = split(/:/,$courseinfo,-1);
                     my %storehash;                       my %storehash; 
                     for (my $i=0; $i<@new_items; $i++) {                      for (my $i=0; $i<@new_items; $i++) {
                         $storehash{$items[$i]} = $new_items[$i];                          $storehash{$items[$i]} = &unescape($new_items[$i]);
                     }                      }
                     $hashref->{$key} =                       $hashref->{$key} = 
                         &Apache::lonnet::freeze_escape(\%storehash);                          &Apache::lonnet::freeze_escape(\%storehash);
Line 3427  sub put_course_id_hash_handler { Line 3794  sub put_course_id_hash_handler {
 #                            will be returned. Pre-2.2.0 legacy entries from   #                            will be returned. Pre-2.2.0 legacy entries from 
 #                            nohist_courseiddump will only contain usernames.  #                            nohist_courseiddump will only contain usernames.
 #                 type     - optional parameter for selection   #                 type     - optional parameter for selection 
 #                 regexp_ok - if true, allow the supplied institutional code  #                 regexp_ok - if 1 or -1 allow the supplied institutional code
 #                            filter to behave as a regular expression.    #                            filter to behave as a regular expression:
   #                      1 will not exclude the course if the instcode matches the RE 
   #                            -1 will exclude the course if the instcode matches the RE
 #                 rtn_as_hash - whether to return the information available for  #                 rtn_as_hash - whether to return the information available for
 #                            each matched item as a frozen hash of all   #                            each matched item as a frozen hash of all 
 #                            key, value pairs in the item's hash, or as a   #                            key, value pairs in the item's hash, or as a 
 #                            colon-separated list of (in order) description,  #                            colon-separated list of (in order) description,
 #                            institutional code, and course owner.  #                            institutional code, and course owner.
 #      #                 selfenrollonly - filter by courses allowing self-enrollment  
   #                                  now or in the future (selfenrollonly = 1).
   #                 catfilter - filter by course category, assigned to a course 
   #                             using manually defined categories (i.e., not
   #                             self-cataloging based on on institutional code).   
   #                 showhidden - include course in results even if course  
   #                              was set to be excluded from course catalog (DC only).
   #                 caller -  if set to 'coursecatalog', courses set to be hidden
   #                           from course catalog will be excluded from results (unless
   #                           overridden by "showhidden".
   #                 cloner - escaped username:domain of course cloner (if picking course to
   #                          clone).
   #                 cc_clone_list - escaped comma separated list of courses for which 
   #                                 course cloner has active CC role (and so can clone
   #                                 automatically).
   #                 cloneonly - filter by courses for which cloner has rights to clone.
   #                 createdbefore - include courses for which creation date preceeded this date.
   #                 createdafter - include courses for which creation date followed this date.
   #                 creationcontext - include courses created in specified context 
   #
   #                 domcloner - flag to indicate if user can create CCs in course's domain.
   #                             If so, ability to clone course is automatic. 
   #
 #     $client  - The socket open on the client.  #     $client  - The socket open on the client.
 # Returns:  # Returns:
 #    1     - Continue processing.  #    1     - Continue processing.
Line 3445  sub dump_course_id_handler { Line 3836  sub dump_course_id_handler {
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
   
     my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,      my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
         $typefilter,$regexp_ok,$rtn_as_hash) =split(/:/,$tail);          $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
           $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
           $creationcontext,$domcloner) =split(/:/,$tail);
       my $now = time;
       my ($cloneruname,$clonerudom,%cc_clone);
     if (defined($description)) {      if (defined($description)) {
  $description=&unescape($description);   $description=&unescape($description);
     } else {      } else {
Line 3485  sub dump_course_id_handler { Line 3880  sub dump_course_id_handler {
     if (defined($regexp_ok)) {      if (defined($regexp_ok)) {
         $regexp_ok=&unescape($regexp_ok);          $regexp_ok=&unescape($regexp_ok);
     }      }
       if (defined($catfilter)) {
           $catfilter=&unescape($catfilter);
       }
       if (defined($cloner)) {
           $cloner = &unescape($cloner);
           ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/); 
       }
       if (defined($cc_clone_list)) {
           $cc_clone_list = &unescape($cc_clone_list);
           my @cc_cloners = split('&',$cc_clone_list);
           foreach my $cid (@cc_cloners) {
               my ($clonedom,$clonenum) = split(':',$cid);
               next if ($clonedom ne $udom); 
               $cc_clone{$clonedom.'_'.$clonenum} = 1;
           } 
       }
       if ($createdbefore ne '') {
           $createdbefore = &unescape($createdbefore);
       } else {
          $createdbefore = 0;
       }
       if ($createdafter ne '') {
           $createdafter = &unescape($createdafter);
       } else {
           $createdafter = 0;
       }
       if ($creationcontext ne '') {
           $creationcontext = &unescape($creationcontext);
       } else {
           $creationcontext = '.';
       }
     my $unpack = 1;      my $unpack = 1;
     if ($description eq '.' && $instcodefilter eq '.' && $coursefilter eq '.' &&       if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' && 
         $typefilter eq '.') {          $typefilter eq '.') {
         $unpack = 0;          $unpack = 0;
     }      }
Line 3495  sub dump_course_id_handler { Line 3921  sub dump_course_id_handler {
     my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());      my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
     if ($hashref) {      if ($hashref) {
  while (my ($key,$value) = each(%$hashref)) {   while (my ($key,$value) = each(%$hashref)) {
             my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,%unesc_val);              my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
                   %unesc_val,$selfenroll_end,$selfenroll_types,$created,
                   $context);
             $unesc_key = &unescape($key);              $unesc_key = &unescape($key);
             if ($unesc_key =~ /^lasttime:/) {              if ($unesc_key =~ /^lasttime:/) {
                 next;                  next;
Line 3506  sub dump_course_id_handler { Line 3934  sub dump_course_id_handler {
                 $lasttime = $hashref->{$lasttime_key};                  $lasttime = $hashref->{$lasttime_key};
                 next if ($lasttime<$since);                  next if ($lasttime<$since);
             }              }
               my ($canclone,$valchange);
             my $items = &Apache::lonnet::thaw_unescape($value);              my $items = &Apache::lonnet::thaw_unescape($value);
             if (ref($items) eq 'HASH') {              if (ref($items) eq 'HASH') {
                   if ($hashref->{$lasttime_key} eq '') {
                       next if ($since > 1);
                   }
                 $is_hash =  1;                  $is_hash =  1;
                   if ($domcloner) {
                       $canclone = 1;
                   } elsif (defined($clonerudom)) {
                       if ($items->{'cloners'}) {
                           my @cloneable = split(',',$items->{'cloners'});
                           if (@cloneable) {
                               if (grep(/^\*$/,@cloneable))  {
                                   $canclone = 1;
                               } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
                                   $canclone = 1;
                               } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
                                   $canclone = 1;
                               }
                           }
                           unless ($canclone) {
                               if ($cloneruname ne '' && $clonerudom ne '') {
                                   if ($cc_clone{$unesc_key}) {
                                       $canclone = 1;
                                       $items->{'cloners'} .= ','.$cloneruname.':'.
                                                              $clonerudom;
                                       $valchange = 1;
                                   }
                               }
                           }
                       } elsif (defined($cloneruname)) {
                           if ($cc_clone{$unesc_key}) {
                               $canclone = 1;
                               $items->{'cloners'} = $cloneruname.':'.$clonerudom;
                               $valchange = 1;
                           }
                           unless ($canclone) {
                               if ($items->{'owner'} =~ /:/) {
                                   if ($items->{'owner'} eq $cloner) {
                                       $canclone = 1;
                                   }
                               } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
                                   $canclone = 1;
                               }
                               if ($canclone) {
                                   $items->{'cloners'} = $cloneruname.':'.$clonerudom;
                                   $valchange = 1;
                               }
                           }
                       }
                   }
                 if ($unpack || !$rtn_as_hash) {                  if ($unpack || !$rtn_as_hash) {
                     $unesc_val{'descr'} = $items->{'description'};                      $unesc_val{'descr'} = $items->{'description'};
                     $unesc_val{'inst_code'} = $items->{'inst_code'};                      $unesc_val{'inst_code'} = $items->{'inst_code'};
                     $unesc_val{'owner'} = $items->{'owner'};                      $unesc_val{'owner'} = $items->{'owner'};
                     $unesc_val{'type'} = $items->{'type'};                      $unesc_val{'type'} = $items->{'type'};
                       $unesc_val{'cloners'} = $items->{'cloners'};
                       $unesc_val{'created'} = $items->{'created'};
                       $unesc_val{'context'} = $items->{'context'};
                   }
                   $selfenroll_types = $items->{'selfenroll_types'};
                   $selfenroll_end = $items->{'selfenroll_end_date'};
                   $created = $items->{'created'};
                   $context = $items->{'context'};
                   if ($selfenrollonly) {
                       next if (!$selfenroll_types);
                       if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
                           next;
                       }
                   }
                   if ($creationcontext ne '.') {
                       next if (($context ne '') && ($context ne $creationcontext));  
                   }
                   if ($createdbefore > 0) {
                       next if (($created eq '') || ($created > $createdbefore));   
                   }
                   if ($createdafter > 0) {
                       next if (($created eq '') || ($created <= $createdafter)); 
                   }
                   if ($catfilter ne '') {
                       next if ($items->{'categories'} eq '');
                       my @categories = split('&',$items->{'categories'}); 
                       next if (@categories == 0);
                       my @subcats = split('&',$catfilter);
                       my $matchcat = 0;
                       foreach my $cat (@categories) {
                           if (grep(/^\Q$cat\E$/,@subcats)) {
                               $matchcat = 1;
                               last;
                           }
                       }
                       next if (!$matchcat);
                   }
                   if ($caller eq 'coursecatalog') {
                       if ($items->{'hidefromcat'} eq 'yes') {
                           next if !$showhidden;
                       }
                 }                  }
             } else {              } else {
                   next if ($catfilter ne '');
                   next if ($selfenrollonly);
                   next if ($createdbefore || $createdafter);
                   next if ($creationcontext ne '.');
                   if ((defined($clonerudom)) && (defined($cloneruname)))  {
                       if ($cc_clone{$unesc_key}) {
                           $canclone = 1;
                           $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
                       }
                   }
                 $is_hash =  0;                  $is_hash =  0;
                 my @courseitems = split(/:/,&unescape($value));                  my @courseitems = split(/:/,$value);
                 $lasttime = pop(@courseitems);                  $lasttime = pop(@courseitems);
                 next if ($lasttime<$since);                  if ($hashref->{$lasttime_key} eq '') {
                       next if ($lasttime<$since);
                   }
         ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;          ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
             }              }
               if ($cloneonly) {
                  next unless ($canclone);
               }
             my $match = 1;              my $match = 1;
     if ($description ne '.') {      if ($description ne '.') {
                 if (!$is_hash) {                  if (!$is_hash) {
Line 3535  sub dump_course_id_handler { Line 4068  sub dump_course_id_handler {
                 if (!$is_hash) {                  if (!$is_hash) {
                     $unesc_val{'inst_code'} = &unescape($val{'inst_code'});                      $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
                 }                  }
                 if ($regexp_ok) {                  if ($regexp_ok == 1) {
                     if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {                      if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
                         $match = 0;                          $match = 0;
                     }                      }
                   } elsif ($regexp_ok == -1) {
                       if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
                           $match = 0;
                       }
                 } else {                  } else {
                     if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {                      if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
                         $match = 0;                          $match = 0;
Line 3604  sub dump_course_id_handler { Line 4141  sub dump_course_id_handler {
             if ($match == 1) {              if ($match == 1) {
                 if ($rtn_as_hash) {                  if ($rtn_as_hash) {
                     if ($is_hash) {                      if ($is_hash) {
                         $qresult.=$key.'='.$value.'&';                          if ($valchange) {
                               my $newvalue = &Apache::lonnet::freeze_escape($items);
                               $qresult.=$key.'='.$newvalue.'&';
                           } else {
                               $qresult.=$key.'='.$value.'&';
                           }
                     } else {                      } else {
                         my %rtnhash = ( 'description' => &escape($val{'descr'}),                          my %rtnhash = ( 'description' => &unescape($val{'descr'}),
                                         'inst_code' => &escape($val{'inst_code'}),                                          'inst_code' => &unescape($val{'inst_code'}),
                                         'owner'     => &escape($val{'owner'}),                                          'owner'     => &unescape($val{'owner'}),
                                         'type'      => &escape($val{'type'}),                                          'type'      => &unescape($val{'type'}),
                                           'cloners'   => &unescape($val{'cloners'}),
                                       );                                        );
                         my $items = &Apache::lonnet::freeze_escape(\%rtnhash);                          my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
                         $qresult.=$key.'='.$items.'&';                          $qresult.=$key.'='.$items.'&';
Line 3628  sub dump_course_id_handler { Line 4171  sub dump_course_id_handler {
  }   }
  if (&untie_domain_hash($hashref)) {   if (&untie_domain_hash($hashref)) {
     chop($qresult);      chop($qresult);
     &Reply($client, "$qresult\n", $userinput);      &Reply($client, \$qresult, $userinput);
  } else {   } else {
     &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".      &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
     "while attempting courseiddump\n", $userinput);      "while attempting courseiddump\n", $userinput);
Line 3641  sub dump_course_id_handler { Line 4184  sub dump_course_id_handler {
 }  }
 &register_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);  &register_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
   
   sub course_lastaccess_handler {
       my ($cmd, $tail, $client) = @_;
       my $userinput = "$cmd:$tail";
       my ($cdom,$cnum) = split(':',$tail); 
       my (%lastaccess,$qresult);
       my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
       if ($hashref) {
           while (my ($key,$value) = each(%$hashref)) {
               my ($unesc_key,$lasttime);
               $unesc_key = &unescape($key);
               if ($cnum) {
                   next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
               }
               if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
                   $lastaccess{$1} = $value;
               } else {
                   my $items = &Apache::lonnet::thaw_unescape($value);
                   if (ref($items) eq 'HASH') {
                       unless ($lastaccess{$unesc_key}) {
                           $lastaccess{$unesc_key} = '';
                       }
                   } else {
                       my @courseitems = split(':',$value);
                       $lastaccess{$unesc_key} = pop(@courseitems);
                   }
               }
           }
           foreach my $cid (sort(keys(%lastaccess))) {
               $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&'; 
           }
           if (&untie_domain_hash($hashref)) {
               if ($qresult) {
                   chop($qresult);
               }
               &Reply($client, \$qresult, $userinput);
           } else {
               &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
                       "while attempting lastacourseaccess\n", $userinput);
           }
       } else {
           &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
                   "while attempting lastcourseaccess\n", $userinput);
       }
       return 1;
   }
   &register_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
   
 #  #
 # Puts an unencrypted entry in a namespace db file at the domain level   # Puts an unencrypted entry in a namespace db file at the domain level 
 #  #
Line 3706  sub put_domain_handler { Line 4296  sub put_domain_handler {
 sub get_domain_handler {  sub get_domain_handler {
     my ($cmd, $tail, $client) = @_;      my ($cmd, $tail, $client) = @_;
   
   
     my $userinput = "$client:$tail";      my $userinput = "$client:$tail";
   
     my ($udom,$namespace,$what)=split(/:/,$tail,3);      my ($udom,$namespace,$what)=split(/:/,$tail,3);
Line 3719  sub get_domain_handler { Line 4310  sub get_domain_handler {
         }          }
         if (&untie_domain_hash($hashref)) {          if (&untie_domain_hash($hashref)) {
             $qresult=~s/\&$//;              $qresult=~s/\&$//;
             &Reply($client, "$qresult\n", $userinput);              &Reply($client, \$qresult, $userinput);
         } else {          } else {
             &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".              &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
                       "while attempting getdom\n",$userinput);                        "while attempting getdom\n",$userinput);
Line 3733  sub get_domain_handler { Line 4324  sub get_domain_handler {
 }  }
 &register_handler("getdom", \&get_domain_handler, 0, 1, 0);  &register_handler("getdom", \&get_domain_handler, 0, 1, 0);
   
   
 #  #
 #  Puts an id to a domains id database.   #  Puts an id to a domains id database. 
 #  #
Line 3817  sub get_id_handler { Line 4407  sub get_id_handler {
  }   }
  if (&untie_domain_hash($hashref)) {   if (&untie_domain_hash($hashref)) {
     $qresult=~s/\&$//;      $qresult=~s/\&$//;
     &Reply($client, "$qresult\n", $userinput);      &Reply($client, \$qresult, $userinput);
  } else {   } else {
     &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".      &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
       "while attempting idget\n",$userinput);        "while attempting idget\n",$userinput);
Line 3831  sub get_id_handler { Line 4421  sub get_id_handler {
 }  }
 &register_handler("idget", \&get_id_handler, 0, 1, 0);  &register_handler("idget", \&get_id_handler, 0, 1, 0);
   
   #   Deletes one or more ids in a domain's id database.
   #
   #   Parameters:
   #       $cmd                  - Command keyword (iddel).
   #       $tail                 - Command tail.  In this case a colon
   #                               separated list containing:
   #                               The domain for which we are deleting the id(s).
   #                               &-separated list of id(s) to delete.
   #       $client               - File open on client socket.
   # Returns:
   #     1   - Continue processing
   #     0   - Exit server.
   #
   #
   
   sub del_id_handler {
       my ($cmd,$tail,$client) = @_;
   
       my $userinput = "$cmd:$tail";
   
       my ($udom,$what)=split(/:/,$tail);
       chomp($what);
       my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
                                      "D", $what);
       if ($hashref) {
           my @keys=split(/\&/,$what);
           foreach my $key (@keys) {
               delete($hashref->{$key});
           }
           if (&untie_user_hash($hashref)) {
               &Reply($client, "ok\n", $userinput);
           } else {
               &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
                       "while attempting iddel\n", $userinput);
           }
       } else {
           &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
                    "while attempting iddel\n", $userinput);
       }
       return 1;
   }
   &register_handler("iddel", \&del_id_handler, 0, 1, 0);
   
 #  #
 # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database   # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database 
 #  #
Line 3851  sub get_id_handler { Line 4484  sub get_id_handler {
 sub put_dcmail_handler {  sub put_dcmail_handler {
     my ($cmd,$tail,$client) = @_;      my ($cmd,$tail,$client) = @_;
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
                                                                                   
   
     my ($udom,$what)=split(/:/,$tail);      my ($udom,$what)=split(/:/,$tail);
     chomp($what);      chomp($what);
     my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());      my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
Line 3941  sub dump_dcmail_handler { Line 4575  sub dump_dcmail_handler {
         }          }
         if (&untie_domain_hash($hashref)) {          if (&untie_domain_hash($hashref)) {
             chop($qresult);              chop($qresult);
             &Reply($client, "$qresult\n", $userinput);              &Reply($client, \$qresult, $userinput);
         } else {          } else {
             &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".              &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
                     "while attempting dcmaildump\n", $userinput);                      "while attempting dcmaildump\n", $userinput);
Line 4040  sub dump_domainroles_handler { Line 4674  sub dump_domainroles_handler {
         $rolesfilter=&unescape($rolesfilter);          $rolesfilter=&unescape($rolesfilter);
  @roles = split(/\&/,$rolesfilter);   @roles = split(/\&/,$rolesfilter);
     }      }
                                                                                              
     my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());      my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
     if ($hashref) {      if ($hashref) {
         my $qresult = '';          my $qresult = '';
         while (my ($key,$value) = each(%$hashref)) {          while (my ($key,$value) = each(%$hashref)) {
             my $match = 1;              my $match = 1;
             my ($start,$end) = split(/:/,&unescape($value));              my ($end,$start) = split(/:/,&unescape($value));
             my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));              my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
             unless ($startfilter eq '.' || !defined($startfilter)) {              unless (@roles < 1) {
                 if ($start >= $startfilter) {                  unless (grep/^\Q$trole\E$/,@roles) {
                     $match = 0;                      $match = 0;
                       next;
                 }                  }
             }              }
             unless ($endfilter eq '.' || !defined($endfilter)) {              unless ($startfilter eq '.' || !defined($startfilter)) {
                 if ($end <= $endfilter) {                  if ((defined($start)) && ($start >= $startfilter)) {
                     $match = 0;                      $match = 0;
                       next;
                 }                  }
             }              }
             unless (@roles < 1) {              unless ($endfilter eq '.' || !defined($endfilter)) {
                 unless (grep/^$trole$/,@roles) {                  if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
                     $match = 0;                      $match = 0;
                       next;
                 }                  }
             }              }
             if ($match == 1) {              if ($match == 1) {
Line 4069  sub dump_domainroles_handler { Line 4706  sub dump_domainroles_handler {
         }          }
         if (&untie_domain_hash($hashref)) {          if (&untie_domain_hash($hashref)) {
             chop($qresult);              chop($qresult);
             &Reply($client, "$qresult\n", $userinput);              &Reply($client, \$qresult, $userinput);
         } else {          } else {
             &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".              &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
                     "while attempting domrolesdump\n", $userinput);                      "while attempting domrolesdump\n", $userinput);
Line 4112  sub tmp_put_handler { Line 4749  sub tmp_put_handler {
     }      }
     my ($id,$store);      my ($id,$store);
     $tmpsnum++;      $tmpsnum++;
     if ($context eq 'resetpw') {      if (($context eq 'resetpw') || ($context eq 'createaccount')) {
         $id = &md5_hex(&md5_hex(time.{}.rand().$$));          $id = &md5_hex(&md5_hex(time.{}.rand().$$));
     } else {      } else {
         $id = $$.'_'.$clientip.'_'.$tmpsnum;          $id = $$.'_'.$clientip.'_'.$tmpsnum;
Line 4123  sub tmp_put_handler { Line 4760  sub tmp_put_handler {
     if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {      if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
  print $store $record;   print $store $record;
  close $store;   close $store;
  &Reply($client, "$id\n", $userinput);   &Reply($client, \$id, $userinput);
     } else {      } else {
  &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".   &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
   "while attempting tmpput\n", $userinput);    "while attempting tmpput\n", $userinput);
Line 4157  sub tmp_get_handler { Line 4794  sub tmp_get_handler {
     my $execdir=$perlvar{'lonDaemons'};      my $execdir=$perlvar{'lonDaemons'};
     if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {      if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
  my $reply=<$store>;   my $reply=<$store>;
  &Reply( $client, "$reply\n", $userinput);   &Reply( $client, \$reply, $userinput);
  close $store;   close $store;
     } else {      } else {
  &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".   &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
Line 4341  sub enrollment_enabled_handler { Line 4978  sub enrollment_enabled_handler {
     my ($cdom) = split(/:/, $tail, 2);   # Domain we're asking about.      my ($cdom) = split(/:/, $tail, 2);   # Domain we're asking about.
   
     my $outcome  = &localenroll::run($cdom);      my $outcome  = &localenroll::run($cdom);
     &Reply($client, "$outcome\n", $userinput);      &Reply($client, \$outcome, $userinput);
   
     return 1;      return 1;
 }  }
 &register_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);  &register_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
   
   #
   #   Validate an institutional code used for a LON-CAPA course.          
   #
   # Formal Parameters:
   #   $cmd          - The command request that got us dispatched.
   #   $tail         - The tail of the command.  In this case,
   #                   this is a colon separated set of words that will be split
   #                   into:
   #                        $dom      - The domain for which the check of 
   #                                    institutional course code will occur.
   #
   #                        $instcode - The institutional code for the course
   #                                    being requested, or validated for rights
   #                                    to request.
   #
   #                        $owner    - The course requestor (who will be the
   #                                    course owner, in the form username:domain
   #
   #   $client       - Socket open on the client.
   # Returns:
   #    1           - Indicating processing should continue.
   #
   sub validate_instcode_handler {
       my ($cmd, $tail, $client) = @_;
       my $userinput = "$cmd:$tail";
       my ($dom,$instcode,$owner) = split(/:/, $tail);
       $instcode = &unescape($instcode);
       $owner = &unescape($owner);
       my ($outcome,$description,$credits) = 
           &localenroll::validate_instcode($dom,$instcode,$owner);
       my $result = &escape($outcome).'&'.&escape($description).'&'.
                    &escape($credits);
       &Reply($client, \$result, $userinput);
   
       return 1;
   }
   &register_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
   
 #   Get the official sections for which auto-enrollment is possible.  #   Get the official sections for which auto-enrollment is possible.
 #   Since the admin people won't know about 'unofficial sections'   #   Since the admin people won't know about 'unofficial sections' 
 #   we cannot auto-enroll on them.  #   we cannot auto-enroll on them.
Line 4368  sub get_sections_handler { Line 5043  sub get_sections_handler {
     my @secs = &localenroll::get_sections($coursecode,$cdom);      my @secs = &localenroll::get_sections($coursecode,$cdom);
     my $seclist = &escape(join(':',@secs));      my $seclist = &escape(join(':',@secs));
   
     &Reply($client, "$seclist\n", $userinput);      &Reply($client, \$seclist, $userinput);
           
   
     return 1;      return 1;
Line 4393  sub get_sections_handler { Line 5068  sub get_sections_handler {
 sub validate_course_owner_handler {  sub validate_course_owner_handler {
     my ($cmd, $tail, $client)  = @_;      my ($cmd, $tail, $client)  = @_;
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
     my ($inst_course_id, $owner, $cdom) = split(/:/, $tail);      my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);
       
     $owner = &unescape($owner);      $owner = &unescape($owner);
     my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom);      $coowners = &unescape($coowners);
     &Reply($client, "$outcome\n", $userinput);      my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
       &Reply($client, \$outcome, $userinput);
   
   
   
Line 4428  sub validate_course_section_handler { Line 5104  sub validate_course_section_handler {
     my ($inst_course_id, $cdom) = split(/:/, $tail);      my ($inst_course_id, $cdom) = split(/:/, $tail);
   
     my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);      my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
     &Reply($client, "$outcome\n", $userinput);      &Reply($client, \$outcome, $userinput);
   
   
     return 1;      return 1;
Line 4456  sub validate_class_access_handler { Line 5132  sub validate_class_access_handler {
     my ($cmd, $tail, $client) = @_;      my ($cmd, $tail, $client) = @_;
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
     my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);      my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
     my @owners = split(/,/,&unescape($ownerlist));      my $owners = &unescape($ownerlist);
     my $outcome;      my $outcome;
     eval {      eval {
  local($SIG{__DIE__})='DEFAULT';   local($SIG{__DIE__})='DEFAULT';
  $outcome=&localenroll::check_section($inst_class,\@owners,$cdom);   $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
     };      };
     &Reply($client,"$outcome\n", $userinput);      &Reply($client,\$outcome, $userinput);
   
     return 1;      return 1;
 }  }
Line 4550  sub retrieve_auto_file_handler { Line 5226  sub retrieve_auto_file_handler {
 }  }
 &register_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);  &register_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
   
   sub crsreq_checks_handler {
       my ($cmd, $tail, $client) = @_;
       my $userinput = "$cmd:$tail";
       my $dom = $tail;
       my $result;
       my @reqtypes = ('official','unofficial','community');
       eval {
           local($SIG{__DIE__})='DEFAULT';
           my %validations;
           my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
                                                      \%validations);
           if ($response eq 'ok') { 
               foreach my $key (keys(%validations)) {
                   $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
               }
               $result =~ s/\&$//;
           } else {
               $result = 'error';
           }
       };
       if (!$@) {
           &Reply($client, \$result, $userinput);
       } else {
           &Failure($client,"unknown_cmd\n",$userinput);
       }
       return 1;
   }
   &register_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
   
   sub validate_crsreq_handler {
       my ($cmd, $tail, $client) = @_;
       my $userinput = "$cmd:$tail";
       my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = split(/:/, $tail);
       $instcode = &unescape($instcode);
       $owner = &unescape($owner);
       $crstype = &unescape($crstype);
       $inststatuslist = &unescape($inststatuslist);
       $instcode = &unescape($instcode);
       $instseclist = &unescape($instseclist);
       my $outcome;
       eval {
           local($SIG{__DIE__})='DEFAULT';
           $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
                                                    $inststatuslist,$instcode,
                                                    $instseclist);
       };
       if (!$@) {
           &Reply($client, \$outcome, $userinput);
       } else {
           &Failure($client,"unknown_cmd\n",$userinput);
       }
       return 1;
   }
   &register_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
   
 #  #
 #   Read and retrieve institutional code format (for support form).  #   Read and retrieve institutional code format (for support form).
 # Formal Parameters:  # Formal Parameters:
Line 4623  sub get_institutional_defaults_handler { Line 5354  sub get_institutional_defaults_handler {
                 $result.=&escape($key).'='.&escape($value).'&';                  $result.=&escape($key).'='.&escape($value).'&';
             }              }
             $result .= 'code_order='.&escape(join('&',@code_order));              $result .= 'code_order='.&escape(join('&',@code_order));
             &Reply($client,$result."\n",$userinput);              &Reply($client,\$result,$userinput);
         } else {          } else {
             &Reply($client,"error\n", $userinput);              &Reply($client,"error\n", $userinput);
         }          }
Line 4634  sub get_institutional_defaults_handler { Line 5365  sub get_institutional_defaults_handler {
 &register_handler("autoinstcodedefaults",  &register_handler("autoinstcodedefaults",
                   \&get_institutional_defaults_handler,0,1,0);                    \&get_institutional_defaults_handler,0,1,0);
   
   sub get_possible_instcodes_handler {
       my ($cmd, $tail, $client)   = @_;
       my $userinput               = "$cmd:$tail";
   
       my $reply;
       my $cdom = $tail;
       my (@codetitles,%cat_titles,%cat_order,@code_order);
       my $formatreply = &localenroll::possible_instcodes($cdom,
                                                          \@codetitles,
                                                          \%cat_titles,
                                                          \%cat_order,
                                                          \@code_order);
       if ($formatreply eq 'ok') {
           my $result = join('&',map {&escape($_);} (@codetitles)).':';
           $result .= join('&',map {&escape($_);} (@code_order)).':';
           foreach my $key (keys(%cat_titles)) {
               $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
           }
           $result =~ s/\&$//;
           $result .= ':';
           foreach my $key (keys(%cat_order)) {
               $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
           }
           $result =~ s/\&$//;
           &Reply($client,\$result,$userinput);
       } else {
           &Reply($client, "format_error\n", $userinput);
       }
       return 1;
   }
   &register_handler("autopossibleinstcodes",
                     \&get_possible_instcodes_handler,0,1,0);
   
 sub get_institutional_user_rules {  sub get_institutional_user_rules {
     my ($cmd, $tail, $client)   = @_;      my ($cmd, $tail, $client)   = @_;
     my $userinput               = "$cmd:$tail";      my $userinput               = "$cmd:$tail";
Line 4658  sub get_institutional_user_rules { Line 5422  sub get_institutional_user_rules {
                 }                  }
             }              }
             $result =~ s/\&$//;              $result =~ s/\&$//;
             &Reply($client,$result."\n",$userinput);              &Reply($client,\$result,$userinput);
         } else {          } else {
             &Reply($client,"error\n", $userinput);              &Reply($client,"error\n", $userinput);
         }          }
Line 4668  sub get_institutional_user_rules { Line 5432  sub get_institutional_user_rules {
 }  }
 &register_handler("instuserrules",\&get_institutional_user_rules,0,1,0);  &register_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
   
   sub get_institutional_id_rules {
       my ($cmd, $tail, $client)   = @_;
       my $userinput               = "$cmd:$tail";
       my $dom = &unescape($tail);
       my (%rules_hash,@rules_order);
       my $outcome;
       eval {
           local($SIG{__DIE__})='DEFAULT';
           $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
       };
       if (!$@) {
           if ($outcome eq 'ok') {
               my $result;
               foreach my $key (keys(%rules_hash)) {
                   $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
               }
               $result =~ s/\&$//;
               $result .= ':';
               if (@rules_order > 0) {
                   foreach my $item (@rules_order) {
                       $result .= &escape($item).'&';
                   }
               }
               $result =~ s/\&$//;
               &Reply($client,\$result,$userinput);
           } else {
               &Reply($client,"error\n", $userinput);
           }
       } else {
           &Failure($client,"unknown_cmd\n",$userinput);
       }
   }
   &register_handler("instidrules",\&get_institutional_id_rules,0,1,0);
   
   sub get_institutional_selfcreate_rules {
       my ($cmd, $tail, $client)   = @_;
       my $userinput               = "$cmd:$tail";
       my $dom = &unescape($tail);
       my (%rules_hash,@rules_order);
       my $outcome;
       eval {
           local($SIG{__DIE__})='DEFAULT';
           $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
       };
       if (!$@) {
           if ($outcome eq 'ok') {
               my $result;
               foreach my $key (keys(%rules_hash)) {
                   $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
               }
               $result =~ s/\&$//;
               $result .= ':';
               if (@rules_order > 0) {
                   foreach my $item (@rules_order) {
                       $result .= &escape($item).'&';
                   }
               }
               $result =~ s/\&$//;
               &Reply($client,\$result,$userinput);
           } else {
               &Reply($client,"error\n", $userinput);
           }
       } else {
           &Failure($client,"unknown_cmd\n",$userinput);
       }
   }
   &register_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
   
   
 sub institutional_username_check {  sub institutional_username_check {
     my ($cmd, $tail, $client)   = @_;      my ($cmd, $tail, $client)   = @_;
Line 4688  sub institutional_username_check { Line 5520  sub institutional_username_check {
             foreach my $key (keys(%rulecheck)) {              foreach my $key (keys(%rulecheck)) {
                 $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';                  $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
             }              }
             &Reply($client,$result."\n",$userinput);              &Reply($client,\$result,$userinput);
         } else {          } else {
             &Reply($client,"error\n", $userinput);              &Reply($client,"error\n", $userinput);
         }          }
Line 4698  sub institutional_username_check { Line 5530  sub institutional_username_check {
 }  }
 &register_handler("instrulecheck",\&institutional_username_check,0,1,0);  &register_handler("instrulecheck",\&institutional_username_check,0,1,0);
   
   sub institutional_id_check {
       my ($cmd, $tail, $client)   = @_;
       my $userinput               = "$cmd:$tail";
       my %rulecheck;
       my $outcome;
       my ($udom,$id,@rules) = split(/:/,$tail);
       $udom = &unescape($udom);
       $id = &unescape($id);
       @rules = map {&unescape($_);} (@rules);
       eval {
           local($SIG{__DIE__})='DEFAULT';
           $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
       };
       if (!$@) {
           if ($outcome eq 'ok') {
               my $result='';
               foreach my $key (keys(%rulecheck)) {
                   $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
               }
               &Reply($client,\$result,$userinput);
           } else {
               &Reply($client,"error\n", $userinput);
           }
       } else {
           &Failure($client,"unknown_cmd\n",$userinput);
       }
   }
   &register_handler("instidrulecheck",\&institutional_id_check,0,1,0);
   
   sub institutional_selfcreate_check {
       my ($cmd, $tail, $client)   = @_;
       my $userinput               = "$cmd:$tail";
       my %rulecheck;
       my $outcome;
       my ($udom,$email,@rules) = split(/:/,$tail);
       $udom = &unescape($udom);
       $email = &unescape($email);
       @rules = map {&unescape($_);} (@rules);
       eval {
           local($SIG{__DIE__})='DEFAULT';
           $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
       };
       if (!$@) {
           if ($outcome eq 'ok') {
               my $result='';
               foreach my $key (keys(%rulecheck)) {
                   $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
               }
               &Reply($client,\$result,$userinput);
           } else {
               &Reply($client,"error\n", $userinput);
           }
       } else {
           &Failure($client,"unknown_cmd\n",$userinput);
       }
   }
   &register_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
   
 # Get domain specific conditions for import of student photographs to a course  # Get domain specific conditions for import of student photographs to a course
 #  #
Line 4850  sub inst_usertypes_handler { Line 5739  sub inst_usertypes_handler {
         }          }
         $res=~s/\&$//;          $res=~s/\&$//;
     }      }
     &Reply($client, "$res\n", $userinput);      &Reply($client, \$res, $userinput);
     return 1;      return 1;
 }  }
 &register_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);  &register_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
Line 5099  sub lcpasswdstrerror { Line 5988  sub lcpasswdstrerror {
     }      }
 }  }
   
 #  
 # Convert an error return code from lcuseradd to a string value:  
 #  
 sub lcuseraddstrerror {  
     my $ErrorCode = shift;  
     if(($ErrorCode < 0) || ($ErrorCode > $lastadderror)) {  
  return "lcuseradd - Unrecognized error code: ".$ErrorCode;  
     } else {  
  return $adderrors[$ErrorCode];  
     }  
 }  
   
 # grabs exception and records it to log before exiting  # grabs exception and records it to log before exiting
 sub catchexception {  sub catchexception {
     my ($error)=@_;      my ($error)=@_;
Line 5171  if (-e $pidfile) { Line 6048  if (-e $pidfile) {
 $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},  $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
                                 Type      => SOCK_STREAM,                                  Type      => SOCK_STREAM,
                                 Proto     => 'tcp',                                  Proto     => 'tcp',
                                 Reuse     => 1,                                  ReuseAddr     => 1,
                                 Listen    => 10 )                                  Listen    => 10 )
   or die "making socket: $@\n";    or die "making socket: $@\n";
   
Line 5181  $server = IO::Socket::INET->new(LocalPor Line 6058  $server = IO::Socket::INET->new(LocalPor
   
 my %children               = ();       # keys are current child process IDs  my %children               = ();       # keys are current child process IDs
   
 sub flip_max_children_enforcing {  
     $max_children_enforcing = !$max_children_enforcing;  
     &logthis("Flipped child maximum enforcement to (".  
      $max_children_enforcing.")");  
 }  
   
 sub REAPER {                        # takes care of dead children  sub REAPER {                        # takes care of dead children
     $SIG{CHLD} = \&REAPER;      $SIG{CHLD} = \&REAPER;
     &status("Handling child death");      &status("Handling child death");
Line 5240  sub HUPSMAN {                      # sig Line 6111  sub HUPSMAN {                      # sig
 #  a setuid perl script that can be root for us to do this job.  #  a setuid perl script that can be root for us to do this job.
 #  #
 sub ReloadApache {  sub ReloadApache {
     my $execdir = $perlvar{'lonDaemons'};  # --------------------------- Handle case of another apachereload process (locking)
     my $script  = $execdir."/apachereload";      if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) {
     system($script);          my $execdir = $perlvar{'lonDaemons'};
           my $script  = $execdir."/apachereload";
           system($script);
           unlink('/tmp/lock_apachereload'); #  Remove the lock file.
       }
 }  }
   
 #  #
Line 5355  sub Debug { Line 6230  sub Debug {
 #  #
 sub Reply {  sub Reply {
     my ($fd, $reply, $request) = @_;      my ($fd, $reply, $request) = @_;
     print $fd $reply;      if (ref($reply)) {
     Debug("Request was $request  Reply was $reply");   print $fd $$reply;
    print $fd "\n";
    if ($DEBUG) { Debug("Request was $request  Reply was $$reply"); }
       } else {
    print $fd $reply;
    if ($DEBUG) { Debug("Request was $request  Reply was $reply"); }
       }
     $Transactions++;      $Transactions++;
 }  }
   
Line 5410  sub logstatus { Line 6290  sub logstatus {
 sub initnewstatus {  sub initnewstatus {
     my $docdir=$perlvar{'lonDocRoot'};      my $docdir=$perlvar{'lonDocRoot'};
     my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");      my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
     my $now=time;      my $now=time();
     my $local=localtime($now);      my $local=localtime($now);
     print $fh "LOND status $local - parent $$\n\n";      print $fh "LOND status $local - parent $$\n\n";
     opendir(DIR,"$docdir/lon-status/londchld");      opendir(DIR,"$docdir/lon-status/londchld");
Line 5496  $SIG{INT}  = $SIG{TERM} = \&HUNTSMAN; Line 6376  $SIG{INT}  = $SIG{TERM} = \&HUNTSMAN;
 $SIG{HUP}  = \&HUPSMAN;  $SIG{HUP}  = \&HUPSMAN;
 $SIG{USR1} = \&checkchildren;  $SIG{USR1} = \&checkchildren;
 $SIG{USR2} = \&UpdateHosts;  $SIG{USR2} = \&UpdateHosts;
 $SIG{SEGV} = \&flip_max_children_enforcing;  
   
 #  Read the host hashes:  #  Read the host hashes:
 &Apache::lonnet::load_hosts_tab();  &Apache::lonnet::load_hosts_tab();
   my %iphost = &Apache::lonnet::get_iphost(1);
   
 my $dist=`$perlvar{'lonDaemons'}/distprobe`;  $dist=`$perlvar{'lonDaemons'}/distprobe`;
   
   my $arch = `uname -i`;
   chomp($arch);
   if ($arch eq 'unknown') {
       $arch = `uname -m`;
       chomp($arch);
   }
   
 # --------------------------------------------------------------  # --------------------------------------------------------------
 #   Accept connections.  When a connection comes in, it is validated  #   Accept connections.  When a connection comes in, it is validated
Line 5512  while (1) { Line 6399  while (1) {
     &status('Starting accept');      &status('Starting accept');
     $client = $server->accept() or next;      $client = $server->accept() or next;
     &status('Accepted '.$client.' off to spawn');      &status('Accepted '.$client.' off to spawn');
     my $child_count = scalar(keys(%children));      make_new_child($client);
     if ($child_count > $max_children) {  
  &logthis("Warning too many children (".$child_count.")");  
     }  
 #    if ($child_count > $max_children && $max_children_enforcing) {  
 # &logthis(" Not creating new child ");  
 # $client->close();  
 #    } else {  
  &make_new_child($client);  
 #    }  
     &logthis("Concurrent children at ($child_count)");  
     &status('Finished spawning');      &status('Finished spawning');
 }  }
   
Line 5570  sub make_new_child { Line 6447  sub make_new_child {
             or die "Can't unblock SIGINT for fork: $!\n";              or die "Can't unblock SIGINT for fork: $!\n";
         $children{$pid} = $clientip;          $children{$pid} = $clientip;
         &status('Started child '.$pid);          &status('Started child '.$pid);
    close($client);
         return;          return;
     } else {      } else {
         # Child can *not* return from this subroutine.          # Child can *not* return from this subroutine.
Line 5578  sub make_new_child { Line 6456  sub make_new_child {
                                 #don't get intercepted                                  #don't get intercepted
         $SIG{USR1}= \&logstatus;          $SIG{USR1}= \&logstatus;
         $SIG{ALRM}= \&timeout;          $SIG{ALRM}= \&timeout;
    #
    # Block sigpipe as it gets thrownon socket disconnect and we want to 
    # deal with that as a read faiure instead.
    #
    my $blockset = POSIX::SigSet->new(SIGPIPE);
    sigprocmask(SIG_BLOCK, $blockset);
   
         $lastlog='Forked ';          $lastlog='Forked ';
         $status='Forked';          $status='Forked';
   
Line 5589  sub make_new_child { Line 6474  sub make_new_child {
 #---------------------------------------------------- kerberos 5 initialization  #---------------------------------------------------- kerberos 5 initialization
         &Authen::Krb5::init_context();          &Authen::Krb5::init_context();
  unless (($dist eq 'fedora5') || ($dist eq 'fedora4') ||     unless (($dist eq 'fedora5') || ($dist eq 'fedora4') ||  
  ($dist eq 'fedora6') || ($dist eq 'suse9.3')) {   ($dist eq 'fedora6') || ($dist eq 'suse9.3') ||
                   ($dist eq 'suse12.2') || ($dist eq 'suse12.3')) {
     &Authen::Krb5::init_ets();      &Authen::Krb5::init_ets();
  }   }
   
Line 5603  sub make_new_child { Line 6489  sub make_new_child {
  if ($clientip eq '127.0.0.1') {   if ($clientip eq '127.0.0.1') {
     $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});      $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
  }   }
    &ReadManagerTable();
  my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));   my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
  my $ismanager=($managers{$outsideip}    ne undef);   my $ismanager=($managers{$outsideip}    ne undef);
  $clientname  = "[unknonwn]";   $clientname  = "[unknown]";
  if($clientrec) { # Establish client type.   if($clientrec) { # Establish client type.
     $ConnectionType = "client";      $ConnectionType = "client";
     $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];      $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
Line 5634  sub make_new_child { Line 6520  sub make_new_child {
  #   #
  #  If the remote is attempting a local init... give that a try:   #  If the remote is attempting a local init... give that a try:
  #   #
  my ($i, $inittype) = split(/:/, $remotereq);   (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
                   # For LON-CAPA 2.9, the  client session will have sent its LON-CAPA
                   # version when initiating the connection. For LON-CAPA 2.8 and older,
                   # the version is retrieved from the global %loncaparevs in lonnet.pm.
                   # $clientversion contains path to keyfile if $inittype eq 'local'
                   # it's overridden below in this case
                   $clientversion ||= $Apache::lonnet::loncaparevs{$clientname};
   
  # If the connection type is ssl, but I didn't get my   # If the connection type is ssl, but I didn't get my
  # certificate files yet, then I'll drop  back to    # certificate files yet, then I'll drop  back to 
Line 5654  sub make_new_child { Line 6546  sub make_new_child {
  }   }
   
  if($inittype eq "local") {   if($inittype eq "local") {
                       $clientversion = $perlvar{'lonVersion'};
     my $key = LocalConnection($client, $remotereq);      my $key = LocalConnection($client, $remotereq);
     if($key) {      if($key) {
  Debug("Got local key $key");   Debug("Got local key $key");
Line 5661  sub make_new_child { Line 6554  sub make_new_child {
  my $cipherkey = pack("H32", $key);   my $cipherkey = pack("H32", $key);
  $cipher       = new IDEA($cipherkey);   $cipher       = new IDEA($cipherkey);
  print $client "ok:local\n";   print $client "ok:local\n";
  &logthis('<font color="green"'   &logthis('<font color="green">'
  . "Successful local authentication </font>");   . "Successful local authentication </font>");
  $keymode = "local"   $keymode = "local"
     } else {      } else {
Line 5725  sub make_new_child { Line 6618  sub make_new_child {
 # ------------------------------------------------------------ Process requests  # ------------------------------------------------------------ Process requests
     my $keep_going = 1;      my $keep_going = 1;
     my $user_input;      my $user_input;
     my $max_size = (split("\n",`ps -o vsz $$`))[-1];              my $clienthost = &Apache::lonnet::hostname($clientname);
               my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
               $clienthomedom = &Apache::lonnet::host_domain($clientserverhomeID);
     while(($user_input = get_request) && $keep_going) {      while(($user_input = get_request) && $keep_going) {
  alarm(120);   alarm(120);
  Debug("Main: Got $user_input\n");   Debug("Main: Got $user_input\n");
  $keep_going = &process_request($user_input);   $keep_going = &process_request($user_input);
  if (!$max_children_enforcing) {  
     my $new_size = (split("\n",`ps -o vsz $$`))[-1];  
     if ($new_size > $max_size) {  
  &logthis("size increase of ".($new_size-$max_size)." ($new_size) while processing (".length($user_input).")\n".substr($user_input,0,80));  
  $max_size = $new_size;  
     }  
  }  
  alarm(0);   alarm(0);
  &status('Listening to '.$clientname." ($keymode)");      &status('Listening to '.$clientname." ($keymode)");   
     }      }
Line 5782  sub is_author { Line 6670  sub is_author {
   
     #  Author role should show up as a key /domain/_au      #  Author role should show up as a key /domain/_au
   
     my $key    = "/$domain/_au";  
     my $value;      my $value;
     if (defined($hashref)) {      if ($hashref) {
  $value = $hashref->{$key};  
     }  
   
     if(defined($value)) {   my $key    = "/$domain/_au";
  &Debug("$user @ $domain is an author");   if (defined($hashref)) {
       $value = $hashref->{$key};
       if(!untie_user_hash($hashref)) {
    return 'error: ' .  ($!+0)." untie (GDBM) Failed";
       }
    }
   
    if(defined($value)) {
       &Debug("$user @ $domain is an author");
    }
       } else {
    return 'error: '.($!+0)." tie (GDBM) Failed";
     }      }
   
     return defined($value);      return defined($value);
 }  }
 #  #
 #   Checks to see if the input roleput request was to set  #   Checks to see if the input roleput request was to set
 # an author role.  If so, invokes the lchtmldir script to set  # an author role.  If so, creates construction space 
 # up a correct public_html   
 # Parameters:  # Parameters:
 #    request   - The request sent to the rolesput subchunk.  #    request   - The request sent to the rolesput subchunk.
 #                We're looking for  /domain/_au  #                We're looking for  /domain/_au
Line 5807  sub is_author { Line 6702  sub is_author {
 #  #
 sub manage_permissions {  sub manage_permissions {
     my ($request, $domain, $user, $authtype) = @_;      my ($request, $domain, $user, $authtype) = @_;
   
     &Debug("manage_permissions: $request $domain $user $authtype");  
   
     # See if the request is of the form /$domain/_au      # See if the request is of the form /$domain/_au
     if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...      if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
  my $execdir = $perlvar{'lonDaemons'};          my $path=$perlvar{'lonDocRoot'}."/priv/$domain";
  my $userhome= "/home/$user" ;          unless (-e $path) {        
  &logthis("system $execdir/lchtmldir $userhome $user $authtype");             mkdir($path);
  &Debug("Setting homedir permissions for $userhome");          }
  system("$execdir/lchtmldir $userhome $user $authtype");          unless (-e $path.'/'.$user) {
              mkdir($path.'/'.$user);
           }
     }      }
 }  }
   
Line 5891  sub rewrite_password_file { Line 6785  sub rewrite_password_file {
   
 #     Returns the authorization type or nouser if there is no such user.  #     Returns the authorization type or nouser if there is no such user.
 #  #
 sub get_auth_type   sub get_auth_type {
 {  
   
     my ($domain, $user)  = @_;      my ($domain, $user)  = @_;
   
     Debug("get_auth_type( $domain, $user ) \n");      Debug("get_auth_type( $domain, $user ) \n");
Line 5929  sub get_auth_type Line 6821  sub get_auth_type
 #     0        - The domain,user,password triplet is not a valid user.  #     0        - The domain,user,password triplet is not a valid user.
 #  #
 sub validate_user {  sub validate_user {
     my ($domain, $user, $password) = @_;      my ($domain, $user, $password, $checkdefauth) = @_;
   
   
     # Why negative ~pi you may well ask?  Well this function is about      # Why negative ~pi you may well ask?  Well this function is about
     # authentication, and therefore very important to get right.      # authentication, and therefore very important to get right.
Line 5953  sub validate_user { Line 6844  sub validate_user {
   
     my $null = pack("C",0); # Used by kerberos auth types.      my $null = pack("C",0); # Used by kerberos auth types.
   
       if ($howpwd eq 'nouser') {
           if ($checkdefauth) {
               my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
               if ($domdefaults{'auth_def'} eq 'localauth') {
                   $howpwd = $domdefaults{'auth_def'};
                   $contentpwd = $domdefaults{'auth_arg_def'};
               } elsif ((($domdefaults{'auth_def'} eq 'krb4') || 
                         ($domdefaults{'auth_def'} eq 'krb5')) &&
                        ($domdefaults{'auth_arg_def'} ne '')) {
                   $howpwd = $domdefaults{'auth_def'};
                   $contentpwd = $domdefaults{'auth_arg_def'}; 
               }
           }
       } 
     if ($howpwd ne 'nouser') {      if ($howpwd ne 'nouser') {
   
  if($howpwd eq "internal") { # Encrypted is in local password file.   if($howpwd eq "internal") { # Encrypted is in local password file.
     $validated = (crypt($password, $contentpwd) eq $contentpwd);      $validated = (crypt($password, $contentpwd) eq $contentpwd);
  }   }
Line 5976  sub validate_user { Line 6880  sub validate_user {
     } else {      } else {
  $validated = 0;   $validated = 0;
     }      }
  }   } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
  elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.              my $checkwithkrb5 = 0;
     if(! ($password =~ /$null/) ) {              if ($dist =~/^fedora(\d+)$/) {
  my $k4error = &Authen::Krb4::get_pw_in_tkt($user,                  if ($1 > 11) {
    "",                      $checkwithkrb5 = 1;
    $contentpwd,,                  }
    'krbtgt',              } elsif ($dist =~ /^suse([\d.]+)$/) {
    $contentpwd,                  if ($1 > 11.1) {
    1,                      $checkwithkrb5 = 1; 
    $password);                  }
  if(!$k4error) {              }
     $validated = 1;              if ($checkwithkrb5) {
  } else {                  $validated = &krb5_authen($password,$null,$user,$contentpwd);
     $validated = 0;              } else {
     &logthis('krb4: '.$user.', '.$contentpwd.', '.                  $validated = &krb4_authen($password,$null,$user,$contentpwd);
      &Authen::Krb4::get_err_txt($Authen::Krb4::error));              }
  }  
     } else {  
  $validated = 0; # Password has a match with null.  
     }  
  } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.   } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
     if(!($password =~ /$null/)) { # Null password not allowed.              $validated = &krb5_authen($password,$null,$user,$contentpwd);
  my $krbclient = &Authen::Krb5::parse_name($user.'@'  
   .$contentpwd);  
  my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;  
  my $krbserver  = &Authen::Krb5::parse_name($krbservice);  
  my $credentials= &Authen::Krb5::cc_default();  
  $credentials->initialize(&Authen::Krb5::parse_name($user.'@'  
                                                                  .$contentpwd));  
  my $krbreturn  = &Authen::Krb5::get_in_tkt_with_password($krbclient,  
  $krbserver,  
  $password,  
  $credentials);  
  $validated = ($krbreturn == 1);  
  if (!$validated) {  
     &logthis('krb5: '.$user.', '.$contentpwd.', '.  
      &Authen::Krb5::error());  
  }  
     } else {  
  $validated = 0;  
     }  
  } elsif ($howpwd eq "localauth") {    } elsif ($howpwd eq "localauth") { 
     #  Authenticate via installation specific authentcation method:      #  Authenticate via installation specific authentcation method:
     $validated = &localauth::localauth($user,       $validated = &localauth::localauth($user, 
Line 6047  sub validate_user { Line 6928  sub validate_user {
     return $validated;      return $validated;
 }  }
   
   sub krb4_authen {
       my ($password,$null,$user,$contentpwd) = @_;
       my $validated = 0;
       if (!($password =~ /$null/) ) {  # Null password not allowed.
           eval {
               require Authen::Krb4;
           };
           if (!$@) {
               my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
                                                          "",
                                                          $contentpwd,,
                                                          'krbtgt',
                                                          $contentpwd,
                                                          1,
                                                          $password);
               if(!$k4error) {
                   $validated = 1;
               } else {
                   $validated = 0;
                   &logthis('krb4: '.$user.', '.$contentpwd.', '.
                             &Authen::Krb4::get_err_txt($Authen::Krb4::error));
               }
           } else {
               $validated = krb5_authen($password,$null,$user,$contentpwd);
           }
       }
       return $validated;
   }
   
   sub krb5_authen {
       my ($password,$null,$user,$contentpwd) = @_;
       my $validated = 0;
       if(!($password =~ /$null/)) { # Null password not allowed.
           my $krbclient = &Authen::Krb5::parse_name($user.'@'
                                                     .$contentpwd);
           my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
           my $krbserver  = &Authen::Krb5::parse_name($krbservice);
           my $credentials= &Authen::Krb5::cc_default();
           $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
                                                               .$contentpwd));
           my $krbreturn;
           if (exists(&Authen::Krb5::get_init_creds_password)) {
               $krbreturn =
                   &Authen::Krb5::get_init_creds_password($krbclient,$password,
                                                             $krbservice);
               $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
           } else {
               $krbreturn  =
                   &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
                                                            $password,$credentials);
               $validated = ($krbreturn == 1);
           }
           if (!$validated) {
               &logthis('krb5: '.$user.', '.$contentpwd.', '.
                        &Authen::Krb5::error());
           }
       }
       return $validated;
   }
   
 sub addline {  sub addline {
     my ($fname,$hostid,$ip,$newline)=@_;      my ($fname,$hostid,$ip,$newline)=@_;
Line 6259  sub subscribe { Line 7199  sub subscribe {
                 # the metadata                  # the metadata
  unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }   unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
  $fname=~s/\/home\/httpd\/html\/res/raw/;   $fname=~s/\/home\/httpd\/html\/res/raw/;
  $fname="http://".&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;                  my $protocol = $Apache::lonnet::protocol{$perlvar{'lonHostID'}};
                   $protocol = 'http' if ($protocol ne 'https');
    $fname=$protocol.'://'.&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
  $result="$fname\n";   $result="$fname\n";
     }      }
  } else {   } else {
Line 6301  sub change_unix_password { Line 7243  sub change_unix_password {
   
   
 sub make_passwd_file {  sub make_passwd_file {
     my ($uname, $umode,$npass,$passfilename)=@_;      my ($uname,$udom,$umode,$npass,$passfilename)=@_;
     my $result="ok\n";      my $result="ok";
     if ($umode eq 'krb4' or $umode eq 'krb5') {      if ($umode eq 'krb4' or $umode eq 'krb5') {
  {   {
     my $pf = IO::File->new(">$passfilename");      my $pf = IO::File->new(">$passfilename");
Line 6335  sub make_passwd_file { Line 7277  sub make_passwd_file {
     }      }
  }   }
     } elsif ($umode eq 'unix') {      } elsif ($umode eq 'unix') {
  {   &logthis(">>>Attempt to create unix account blocked -- unix auth not available for new users.");
     #   $result="no_new_unix_accounts";
     #  Don't allow the creation of privileged accounts!!! that would  
     #  be real bad!!!  
     #  
     my $uid = getpwnam($uname);  
     if((defined $uid) && ($uid == 0)) {  
  &logthis(">>>Attempted to create privilged account blocked");  
  return "no_priv_account_error\n";  
     }  
   
     my $execpath       ="$perlvar{'lonDaemons'}/"."lcuseradd";  
   
     my $lc_error_file  = $execdir."/tmp/lcuseradd".$$.".status";  
     {  
  &Debug("Executing external: ".$execpath);  
  &Debug("user  = ".$uname.", Password =". $npass);  
  my $se = IO::File->new("|$execpath > $perlvar{'lonDaemons'}/logs/lcuseradd.log");  
  print $se "$uname\n";  
  print $se "$npass\n";  
  print $se "$npass\n";  
  print $se "$lc_error_file\n"; # Status -> unique file.  
     }  
     if (-r $lc_error_file) {  
  &Debug("Opening error file: $lc_error_file");  
  my $error = IO::File->new("< $lc_error_file");  
  my $useraddok = <$error>;  
  $error->close;  
  unlink($lc_error_file);  
   
  chomp $useraddok;  
   
  if($useraddok > 0) {  
     my $error_text = &lcuseraddstrerror($useraddok);  
     &logthis("Failed lcuseradd: $error_text");  
     $result = "lcuseradd_failed:$error_text\n";  
  }  else {  
     my $pf = IO::File->new(">$passfilename");  
     if($pf) {  
  print $pf "unix:\n";  
     } else {  
  $result = "pass_file_failed_error";  
     }  
  }  
     }  else {  
  &Debug("Could not locate lcuseradd error: $lc_error_file");  
  $result="bug_lcuseradd_no_output_file";  
     }  
  }  
     } elsif ($umode eq 'none') {      } elsif ($umode eq 'none') {
  {   {
     my $pf = IO::File->new("> $passfilename");      my $pf = IO::File->new("> $passfilename");
Line 6394  sub make_passwd_file { Line 7289  sub make_passwd_file {
     }      }
  }   }
     } else {      } else {
  $result="auth_mode_error\n";   $result="auth_mode_error";
     }      }
     return $result;      return $result;
 }  }
Line 6417  sub sethost { Line 7312  sub sethost {
  eq &Apache::lonnet::get_host_ip($hostid)) {   eq &Apache::lonnet::get_host_ip($hostid)) {
  $currenthostid  =$hostid;   $currenthostid  =$hostid;
  $currentdomainid=&Apache::lonnet::host_domain($hostid);   $currentdomainid=&Apache::lonnet::host_domain($hostid);
  #&logthis("Setting hostid to $hostid, and domain to $currentdomainid");  # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
     } else {      } else {
  &logthis("Requested host id $hostid not an alias of ".   &logthis("Requested host id $hostid not an alias of ".
  $perlvar{'lonHostID'}." refusing connection");   $perlvar{'lonHostID'}." refusing connection");
Line 6432  sub version { Line 7327  sub version {
     return "version:$VERSION";      return "version:$VERSION";
 }  }
   
   sub get_usersession_config {
       my ($dom,$name) = @_;
       my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
       if (defined($cached)) {
           return $usersessionconf;
       } else {
           my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
           if (ref($domconfig{'usersessions'}) eq 'HASH') {
               &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
               return $domconfig{'usersessions'};
           }
       }
       return;
   }
   
   
   sub distro_and_arch {
       return $dist.':'.$arch;
   }
   
 # ----------------------------------- POD (plain old documentation, CPAN style)  # ----------------------------------- POD (plain old documentation, CPAN style)
   
Line 6640  Place in B<logs/lond.log> Line 7554  Place in B<logs/lond.log>
   
 stores hash in namespace  stores hash in namespace
   
 =item rolesputy  =item rolesput
   
 put a role into a user's environment  put a role into a user's environment
   
Line 6766  linux Line 7680  linux
 Server/Process  Server/Process
   
 =cut  =cut
   
   
   =pod
   
   =head1 LOG MESSAGES
   
   The messages below can be emitted in the lond log.  This log is located
   in ~httpd/perl/logs/lond.log  Many log messages have HTML encapsulation
   to provide coloring if examined from inside a web page. Some do not.
   Where color is used, the colors are; Red for sometihhng to get excited
   about and to follow up on. Yellow for something to keep an eye on to
   be sure it does not get worse, Green,and Blue for informational items.
   
   In the discussions below, sometimes reference is made to ~httpd
   when describing file locations.  There isn't really an httpd 
   user, however there is an httpd directory that gets installed in the
   place that user home directories go.  On linux, this is usually
   (always?) /home/httpd.
   
   
   Some messages are colorless.  These are usually (not always)
   Green/Blue color level messages.
   
   =over 2
   
   =item (Red)  LocalConnection rejecting non local: <ip> ne 127.0.0.1
   
   A local connection negotiation was attempted by
   a host whose IP address was not 127.0.0.1.
   The socket is closed and the child will exit.
   lond has three ways to establish an encyrption
   key with a client:
   
   =over 2
   
   =item local 
   
   The key is written and read from a file.
   This is only valid for connections from localhost.
   
   =item insecure 
   
   The key is generated by the server and
   transmitted to the client.
   
   =item  ssl (secure)
   
   An ssl connection is negotiated with the client,
   the key is generated by the server and sent to the 
   client across this ssl connection before the
   ssl connectionis terminated and clear text
   transmission resumes.
   
   =back
   
   =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
   
   The client is local but has not sent an initialization
   string that is the literal "init:local"  The connection
   is closed and the child exits.
   
   =item Red CRITICAL Can't get key file <error>        
   
   SSL key negotiation is being attempted but the call to
   lonssl::KeyFile  failed.  This usually means that the
   configuration file is not correctly defining or protecting
   the directories/files lonCertificateDirectory or
   lonnetPrivateKey
   <error> is a string that describes the reason that
   the key file could not be located.
   
   =item (Red) CRITICAL  Can't get certificates <error>  
   
   SSL key negotiation failed because we were not able to retrives our certificate
   or the CA's certificate in the call to lonssl::CertificateFile
   <error> is the textual reason this failed.  Usual reasons:
   
   =over 2
          
   =item Apache config file for loncapa  incorrect:
    
   one of the variables 
   lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
   undefined or incorrect
   
   =item Permission error:
   
   The directory pointed to by lonCertificateDirectory is not readable by lond
   
   =item Permission error:
   
   Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
   
   =item Installation error:                         
   
   Either the certificate authority file or the certificate have not
   been installed in lonCertificateDirectory.
   
   =item (Red) CRITICAL SSL Socket promotion failed:  <err> 
   
   The promotion of the connection from plaintext to SSL failed
   <err> is the reason for the failure.  There are two
   system calls involved in the promotion (one of which failed), 
   a dup to produce
   a second fd on the raw socket over which the encrypted data
   will flow and IO::SOcket::SSL->new_from_fd which creates
   the SSL connection on the duped fd.
   
   =item (Blue)   WARNING client did not respond to challenge 
   
   This occurs on an insecure (non SSL) connection negotiation request.
   lond generates some number from the time, the PID and sends it to
   the client.  The client must respond by echoing this information back.
   If the client does not do so, that's a violation of the challenge
   protocols and the connection will be failed.
   
   =item (Red) No manager table. Nobody can manage!!    
   
   lond has the concept of privileged hosts that
   can perform remote management function such
   as update the hosts.tab.   The manager hosts
   are described in the 
   ~httpd/lonTabs/managers.tab file.
   this message is logged if this file is missing.
   
   
   =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
   
   Reports the successful parse and registration
   of a specific manager. 
   
   =item Green existing host <clustername:dnsname>  
   
   The manager host is already defined in the hosts.tab
   the information in that table, rather than the info in the
   manager table will be used to determine the manager's ip.
   
   =item (Red) Unable to craete <filename>                 
   
   lond has been asked to create new versions of an administrative
   file (by a manager).  When this is done, the new file is created
   in a temp file and then renamed into place so that there are always
   usable administrative files, even if the update fails.  This failure
   message means that the temp file could not be created.
   The update is abandoned, and the old file is available for use.
   
   =item (Green) CopyFile from <oldname> to <newname> failed
   
   In an update of administrative files, the copy of the existing file to a
   backup file failed.  The installation of the new file may still succeed,
   but there will not be a back up file to rever to (this should probably
   be yellow).
   
   =item (Green) Pushfile: backed up <oldname> to <newname>
   
   See above, the backup of the old administrative file succeeded.
   
   =item (Red)  Pushfile: Unable to install <filename> <reason>
   
   The new administrative file could not be installed.  In this case,
   the old administrative file is still in use.
   
   =item (Green) Installed new < filename>.                      
   
   The new administrative file was successfullly installed.                                               
   
   =item (Red) Reinitializing lond pid=<pid>                    
   
   The lonc child process <pid> will be sent a USR2 
   signal.
   
   =item (Red) Reinitializing self                                    
   
   We've been asked to re-read our administrative files,and
   are doing so.
   
   =item (Yellow) error:Invalid process identifier <ident>  
   
   A reinit command was received, but the target part of the 
   command was not valid.  It must be either
   'lond' or 'lonc' but was <ident>
   
   =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
   
   Checking to see if lond has been handed a valid edit
   command.  It is possible the edit command is not valid
   in that case there are no log messages to indicate that.
   
   =item Result of password change for  <username> pwchange_success
   
   The password for <username> was
   successfully changed.
   
   =item Unable to open <user> passwd to change password
   
   Could not rewrite the 
   internal password file for a user
   
   =item Result of password change for <user> : <result>
                                                                        
   A unix password change for <user> was attempted 
   and the pipe returned <result>  
   
   =item LWP GET: <message> for <fname> (<remoteurl>)
   
   The lightweight process fetch for a resource failed
   with <message> the local filename that should
   have existed/been created was  <fname> the
   corresponding URI: <remoteurl>  This is emitted in several
   places.
   
   =item Unable to move <transname> to <destname>     
   
   From fetch_user_file_handler - the user file was replicated but could not
   be mv'd to its final location.
   
   =item Looking for <domain> <username>              
   
   From user_has_session_handler - This should be a Debug call instead
   it indicates lond is about to check whether the specified user has a 
   session active on the specified domain on the local host.
   
   =item Client <ip> (<name>) hanging up: <input>     
   
   lond has been asked to exit by its client.  The <ip> and <name> identify the
   client systemand <input> is the full exit command sent to the server.
   
   =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
                                                    
   A lond child terminated.  NOte that this termination can also occur when the
   child receives the QUIT or DIE signals.  <pid> is the process id of the child,
   <hostname> the host lond is working for, and <message> the reason the child died
   to the best of our ability to get it (I would guess that any numeric value
   represents and errno value).  This is immediately followed by
   
   =item  Famous last words: Catching exception - <log> 
   
   Where log is some recent information about the state of the child.
   
   =item Red CRITICAL: TIME OUT <pid>                     
   
   Some timeout occured for server <pid>.  THis is normally a timeout on an LWP
   doing an HTTP::GET.
   
   =item child <pid> died                              
   
   The reaper caught a SIGCHILD for the lond child process <pid>
   This should be modified to also display the IP of the dying child
   $children{$pid}
   
   =item Unknown child 0 died                           
   A child died but the wait for it returned a pid of zero which really should not
   ever happen. 
   
   =item Child <which> - <pid> looks like we missed it's death 
   
   When a sigchild is received, the reaper process checks all children to see if they are
   alive.  If children are dying quite quickly, the lack of signal queuing can mean
   that a signal hearalds the death of more than one child.  If so this message indicates
   which other one died. <which> is the ip of a dead child
   
   =item Free socket: <shutdownretval>                
   
   The HUNTSMAN sub was called due to a SIGINT in a child process.  The socket is being shutdown.
   for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
   to return anything. This is followed by: 
   
   =item Red CRITICAL: Shutting down                       
   
   Just prior to exit.
   
   =item Free socket: <shutdownretval>                 
   
   The HUPSMAN sub was called due to a SIGHUP.  all children get killsed, and lond execs itself.
   This is followed by:
   
   =item (Red) CRITICAL: Restarting                         
   
   lond is about to exec itself to restart.
   
   =item (Blue) Updating connections                        
   
   (In response to a USR2).  All the children (except the one for localhost)
   are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
   
   =item (Blue) UpdateHosts killing child <pid> for ip <ip>   
   
   Due to USR2 as above.
   
   =item (Green) keeping child for ip <ip> (pid = <pid>)    
   
   In response to USR2 as above, the child indicated is not being restarted because
   it's assumed that we'll always need a child for the localhost.
   
   
   =item Going to check on the children                
   
   Parent is about to check on the health of the child processes.
   Note that this is in response to a USR1 sent to the parent lond.
   there may be one or more of the next two messages:
   
   =item <pid> is dead                                 
   
   A child that we have in our child hash as alive has evidently died.
   
   =item  Child <pid> did not respond                   
   
   In the health check the child <pid> did not update/produce a pid_.txt
   file when sent it's USR1 signal.  That process is killed with a 9 signal, as it's
   assumed to be hung in some un-fixable way.
   
   =item Finished checking children                   
    
   Master processs's USR1 processing is cojmplete.
   
   =item (Red) CRITICAL: ------- Starting ------            
   
   (There are more '-'s on either side).  Lond has forked itself off to 
   form a new session and is about to start actual initialization.
   
   =item (Green) Attempting to start child (<client>)       
   
   Started a new child process for <client>.  Client is IO::Socket object
   connected to the child.  This was as a result of a TCP/IP connection from a client.
   
   =item Unable to determine who caller was, getpeername returned nothing
                                                     
   In child process initialization.  either getpeername returned undef or
   a zero sized object was returned.  Processing continues, but in my opinion,
   this should be cause for the child to exit.
   
   =item Unable to determine clientip                  
   
   In child process initialization.  The peer address from getpeername was not defined.
   The client address is stored as "Unavailable" and processing continues.
   
   =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
                                                     
   In child initialization.  A good connectionw as received from <ip>.
   
   =over 2
   
   =item <name> 
   
   is the name of the client from hosts.tab.
   
   =item <type> 
   
   Is the connection type which is either 
   
   =over 2
   
   =item manager 
   
   The connection is from a manager node, not in hosts.tab
   
   =item client  
   
   the connection is from a non-manager in the hosts.tab
   
   =item both
   
   The connection is from a manager in the hosts.tab.
   
   =back
   
   =back
   
   =item (Blue) Certificates not installed -- trying insecure auth
   
   One of the certificate file, key file or
   certificate authority file could not be found for a client attempting
   SSL connection intiation.  COnnection will be attemptied in in-secure mode.
   (this would be a system with an up to date lond that has not gotten a 
   certificate from us).
   
   =item (Green)  Successful local authentication            
   
   A local connection successfully negotiated the encryption key. 
   In this case the IDEA key is in a file (that is hopefully well protected).
   
   =item (Green) Successful ssl authentication with <client>  
   
   The client (<client> is the peer's name in hosts.tab), has successfully
   negotiated an SSL connection with this child process.
   
   =item (Green) Successful insecure authentication with <client>
                                                      
   
   The client has successfully negotiated an  insecure connection withthe child process.
   
   =item (Yellow) Attempted insecure connection disallowed    
   
   The client attempted and failed to successfully negotiate a successful insecure
   connection.  This can happen either because the variable londAllowInsecure is false
   or undefined, or becuse the child did not successfully echo back the challenge
   string.
   
   
   =back
   
   =back
   
   
   =cut
Removed from v.1.385  
changed lines
  Added in v.1.489.2.8

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