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Diff for /loncom/lond between versions 1.178.2.5 and 1.178.2.20

version 1.178.2.5, 2004/02/24 16:52:16 version 1.178.2.20, 2004/04/27 11:30:28
Line 161  sub isManager { Line 161  sub isManager {
 sub isClient {  sub isClient {
     return (($ConnectionType eq "client") || ($ConnectionType eq "both"));      return (($ConnectionType eq "client") || ($ConnectionType eq "both"));
 }  }
   #
   #  Ties a domain level resource file to a hash.
   #  If requested a history entry is created in the associated hist file.
   #
   #  Parameters:
   #     domain    - Name of the domain in which the resource file lives.
   #     namespace - Name of the hash within that domain.
   #     how       - How to tie the hash (e.g. GDBM_WRCREAT()).
   #     loghead   - Optional parameter, if present a log entry is created
   #                 in the associated history file and this is the first part
   #                  of that entry.
   #     logtail   - Goes along with loghead,  The actual logentry is of the
   #                 form $loghead:<timestamp>:logtail.
   # Returns:
   #    Reference to a hash bound to the db file or alternatively undef
   #    if the tie failed.
   #
   sub TieDomainHash {
       my $domain    = shift;
       my $namespace = shift;
       my $how       = shift;
       
       # Filter out any whitespace in the domain name:
       
       $domain =~ s/\W//g;
       
       # We have enough to go on to tie the hash:
       
       my $UserTopDir   = $perlvar{'lonUsersDir'};
       my $DomainDir    = $UserTopDir."/$domain";
       my $ResourceFile = $DomainDir."/$namespace.db";
       my %hash;
       if(tie(%hash, 'GDBM_File', $ResourceFile, $how, 0640)) {
    if (scalar @_) { # Need to log the operation.
       my $logFh = IO::File->new(">>$DomainDir/$namespace.hist");
       if($logFh) {
    my $TimeStamp = time;
    my ($loghead, $logtail) = @_;
    print $logFh "$loghead:$TimeStamp:$logtail\n";
       }
    }
    return \%hash; # Return the tied hash.
       }
       else {
    return undef; # Tie failed.
       }
   }
   
   #
   #   Ties a user's resource file to a hash.  
   #   If necessary, an appropriate history
   #   log file entry is made as well.
   #   This sub factors out common code from the subs that manipulate
   #   the various gdbm files that keep keyword value pairs.
   # Parameters:
   #   domain       - Name of the domain the user is in.
   #   user         - Name of the 'current user'.
   #   namespace    - Namespace representing the file to tie.
   #   how          - What the tie is done to (e.g. GDBM_WRCREAT().
   #   loghead      - Optional first part of log entry if there may be a
   #                  history file.
   #   what         - Optional tail of log entry if there may be a history
   #                  file.
   # Returns:
   #   hash to which the database is tied.  It's up to the caller to untie.
   #   undef if the has could not be tied.
   #
   sub TieUserHash {
       my $domain      = shift;
       my $user        = shift;
       my $namespace   = shift;
       my $how         = shift;
       
       $namespace=~s/\//\_/g; # / -> _
       $namespace=~s/\W//g; # whitespace eliminated.
       my $proname     = propath($domain, $user);
      
       # If this is a namespace for which a history is kept,
       # make the history log entry:
       
       
       unless ($namespace =~/^nohist\_/ && (scalar @_ > 0)) {
    my $hfh = IO::File->new(">>$proname/$namespace.hist"); 
    if($hfh) {
       my $now = time;
       my $loghead  = shift;
       my $what    = shift;
       print $hfh "$loghead:$now:$what\n";
    }
       }
       #  Tie the database.
       
       my %hash;
       if(tie(%hash, 'GDBM_File', "$proname/$namespace.db",
      $how, 0640)) {
    return \%hash;
       }
       else {
    return undef;
       }
       
   }
   
 #  #
 #   Get a Request:  #   Get a Request:
Line 460  sub UserAuthorizationType { Line 561  sub UserAuthorizationType {
     if($result eq "nouser") {      if($result eq "nouser") {
  Failure( $replyfd, "unknown_user\n", $userinput);   Failure( $replyfd, "unknown_user\n", $userinput);
     } else {      } else {
  Reply( $replyfd, "$result\n", $userinput);   #
    # We only want to pass the second field from GetAuthType
    # for ^krb.. otherwise we'll be handing out the encrypted
    # password for internals e.g.
    #
    my ($type,$otherinfo) = split(/:/,$result);
    if($type =~ /^krb/) {
       $type = $result;
    }
    Reply( $replyfd, "$type\n", $userinput);
     }      }
       
     return 1;      return 1;
Line 615  sub AuthenticateHandler { Line 725  sub AuthenticateHandler {
     my $cmd        = shift;      my $cmd        = shift;
     my $tail       = shift;      my $tail       = shift;
     my $client     = shift;      my $client     = shift;
          
     #  Regenerate the full input line       #  Regenerate the full input line 
          
     my $userinput  = $cmd.":".$tail;      my $userinput  = $cmd.":".$tail;
       
     #  udom    - User's domain.      #  udom    - User's domain.
     #  uname   - Username.      #  uname   - Username.
     #  upass   - User's password.      #  upass   - User's password.
          
     my ($udom,$uname,$upass)=split(/:/,$tail);      my ($udom,$uname,$upass)=split(/:/,$tail);
     Debug(" Authenticate domain = $udom, user = $uname, password = $upass");      Debug(" Authenticate domain = $udom, user = $uname, password = $upass");
     chomp($upass);      chomp($upass);
     $upass=unescape($upass);      $upass=unescape($upass);
     my $proname=propath($udom,$uname);  
     my $passfilename="$proname/passwd";  
      
     #   The user's 'personal' loncapa passworrd file describes how to authenticate:  
      
     if (-e $passfilename) {  
  Debug("Located password file: $passfilename");  
   
  my $pf = IO::File->new($passfilename);      my $pwdcorrect = ValidateUser($udom, $uname, $upass);
  my $realpasswd=<$pf>;      if($pwdcorrect) {
  chomp($realpasswd);   Reply( $client, "authorized\n", $userinput);
  my ($howpwd,$contentpwd)=split(/:/,$realpasswd);  
  my $pwdcorrect=0;  
  #   #
  #   Authenticate against password stored in the internal file.   #  Bad credentials: Failed to authorize
  #  
  Debug("Authenticating via $howpwd");  
  if ($howpwd eq 'internal') {  
     &Debug("Internal auth");  
     $pwdcorrect= (crypt($upass,$contentpwd) eq $contentpwd);  
     #  
     #   Authenticate against the unix password file.  
     #  
  } elsif ($howpwd eq 'unix') {  
     &Debug("Unix auth");  
     if((getpwnam($uname))[1] eq "") { #no such user!  
  $pwdcorrect = 0;  
     } else {  
  $contentpwd=(getpwnam($uname))[1];  
  my $pwauth_path="/usr/local/sbin/pwauth";  
  unless ($contentpwd eq 'x') {  
     $pwdcorrect= (crypt($upass,$contentpwd) eq $contentpwd);  
  } elsif (-e $pwauth_path) {  
     open PWAUTH, "|$pwauth_path" or  
  die "Cannot invoke authentication";  
     print PWAUTH "$uname\n$upass\n";  
     close PWAUTH;  
     $pwdcorrect=!$?;  
  }  
     }  
     #  
     #   Authenticate against a Kerberos 4 server:  
     #  
  } elsif ($howpwd eq 'krb4') {  
     my $null=pack("C",0);  
     unless ($upass=~/$null/) {  
  my $krb4_error = &Authen::Krb4::get_pw_in_tkt($uname,  
       "",  
       $contentpwd,  
       'krbtgt',  
       $contentpwd,  
       1,  
       $upass);  
  if (!$krb4_error) {  
     $pwdcorrect = 1;  
  } else {   
     $pwdcorrect=0;   
     # log error if it is not a bad password  
     if ($krb4_error != 62) {  
  &logthis('krb4:'.$uname.','.$contentpwd.','.  
  &Authen::Krb4::get_err_txt($Authen::Krb4::error));  
     }  
  }  
     }  
     #  
     #   Authenticate against a Kerberos 5 server:  
     #  
  } elsif ($howpwd eq 'krb5') {  
     my $null=pack("C",0);  
     unless ($upass=~/$null/) {  
  my $krbclient=&Authen::Krb5::parse_name($uname.'@'.$contentpwd);  
  my $krbservice="krbtgt/".$contentpwd."\@".$contentpwd;  
  my $krbserver=&Authen::Krb5::parse_name($krbservice);  
  my $credentials=&Authen::Krb5::cc_default();  
  $credentials->initialize($krbclient);  
  my $krbreturn = &Authen::Krb5::get_in_tkt_with_password($krbclient,  
  $krbserver,  
  $upass,  
  $credentials);  
  $pwdcorrect = ($krbreturn == 1);  
     } else {   
  $pwdcorrect=0;   
     }  
     #  
     #  Finally, the user may have written in an authentication module.  
     #  in that case, if requested, authenticate against it.  
     #  
  } elsif ($howpwd eq 'localauth') {  
     $pwdcorrect=&localauth::localauth($uname,$upass,$contentpwd);  
  }  
  #  
  #   Successfully authorized.  
  #  
  if ($pwdcorrect) {  
     Reply( $client, "authorized\n", $userinput);  
     #  
     #  Bad credentials: Failed to authorize  
     #  
  } else {  
     Failure( $client, "non_authorized\n", $userinput);  
  }  
  #  
  #  User bad... note it may be bad security practice to  
  #  differntiate to the caller a bad user from a bad  
  #  passwd... since that supplies covert channel information  
  #  (you have a good user but bad password e.g.) to guessers.  
  #   #
     } else {      } else {
  Failure( $client, "unknown_user\n", $userinput);   Failure( $client, "non_authorized\n", $userinput);
     }      }
   
     return 1;      return 1;
 }  }
 RegisterHandler("auth", \&AuthenticateHandler, 1, 1, 0);  RegisterHandler("auth", \&AuthenticateHandler, 1, 1, 0);
Line 781  sub ChangePasswordHandler { Line 792  sub ChangePasswordHandler {
     $upass=&unescape($upass);      $upass=&unescape($upass);
     $npass=&unescape($npass);      $npass=&unescape($npass);
     &Debug("Trying to change password for $uname");      &Debug("Trying to change password for $uname");
     my $proname=propath($udom,$uname);  
     my $passfilename="$proname/passwd";      # First require that the user can be authenticated with their
     if (-e $passfilename) {      # old password:
  my $realpasswd;  
  {       my $validated = ValidateUser($udom, $uname, $upass);
     my $pf = IO::File->new($passfilename);      if($validated) {
     $realpasswd=<$pf>;    my $realpasswd  = GetAuthType($udom, $uname); # Defined since authd.
  }  
  chomp($realpasswd);  
  my ($howpwd,$contentpwd)=split(/:/,$realpasswd);   my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
  if ($howpwd eq 'internal') {   if ($howpwd eq 'internal') {
     &Debug("internal auth");      &Debug("internal auth");
     if (crypt($upass,$contentpwd) eq $contentpwd) {      my $salt=time;
  my $salt=time;      $salt=substr($salt,6,2);
  $salt=substr($salt,6,2);      my $ncpass=crypt($npass,$salt);
  my $ncpass=crypt($npass,$salt);      if(RewritePwFile($udom, $uname, "internal:$ncpass")) {
  {   &logthis("Result of password change for "
     my $pf = IO::File->new(">$passfilename");   ."$uname: pwchange_success");
     if ($pf) {   Reply($client, "ok\n", $userinput);
  print $pf "internal:$ncpass\n";  
  &logthis("Result of password change for "  
  ."$uname: pwchange_success");  
  Reply($client, "ok\n", $userinput);  
     } else {  
  &logthis("Unable to open $uname passwd "                 
  ."to change password");  
  Failure( $client, "non_authorized\n",$userinput);  
     }  
  }               
     } else {      } else {
  Failure($client, "non_authorized\n", $userinput);   &logthis("Unable to open $uname passwd "               
    ."to change password");
    Failure( $client, "non_authorized\n",$userinput);
     }      }
  } elsif ($howpwd eq 'unix') {   } elsif ($howpwd eq 'unix') {
     # Unix means we have to access /etc/password      # Unix means we have to access /etc/password
     # one way or another.  
     # First: Make sure the current password is  
     #        correct  
     &Debug("auth is unix");      &Debug("auth is unix");
     $contentpwd=(getpwnam($uname))[1];      my $execdir=$perlvar{'lonDaemons'};
     my $pwdcorrect = "0";      &Debug("Opening lcpasswd pipeline");
     my $pwauth_path="/usr/local/sbin/pwauth";      my $pf = IO::File->new("|$execdir/lcpasswd > "
     unless ($contentpwd eq 'x') {     ."$perlvar{'lonDaemons'}"
  $pwdcorrect= (crypt($upass,$contentpwd) eq $contentpwd);     ."/logs/lcpasswd.log");
     } elsif (-e $pwauth_path) {      print $pf "$uname\n$npass\n$npass\n";
  open PWAUTH, "|$pwauth_path" or      close $pf;
     die "Cannot invoke authentication";      my $err = $?;
  print PWAUTH "$uname\n$upass\n";      my $result = ($err>0 ? 'pwchange_failure' : 'ok');
  close PWAUTH;      &logthis("Result of password change for $uname: ".
  &Debug("exited pwauth with $? ($uname,$upass) ");       &lcpasswdstrerror($?));
  $pwdcorrect=($? == 0);      Reply($client, "$result\n", $userinput);
     }  
     if ($pwdcorrect) {  
  my $execdir=$perlvar{'lonDaemons'};  
  &Debug("Opening lcpasswd pipeline");  
  my $pf = IO::File->new("|$execdir/lcpasswd > "  
        ."$perlvar{'lonDaemons'}"  
        ."/logs/lcpasswd.log");  
  print $pf "$uname\n$npass\n$npass\n";  
  close $pf;  
  my $err = $?;  
  my $result = ($err>0 ? 'pwchange_failure' : 'ok');  
  &logthis("Result of password change for $uname: ".  
  &lcpasswdstrerror($?));  
  Reply($client, "$result\n", $userinput);  
     } else {  
  Reply($client, "non_authorized\n", $userinput);  
     }  
  } else {   } else {
       # this just means that the current password mode is not
       # one we know how to change (e.g the kerberos auth modes or
       # locally written auth handler).
       #
     Reply( $client, "auth_mode_error\n", $userinput);      Reply( $client, "auth_mode_error\n", $userinput);
  }     }  
     } else {  
  Reply( $client, "unknown_user\n", $userinput);      }
       else {
    Reply( $client, "non_authorized\n", $userinput);
     }      }
   
     return 1;      return 1;
 }  }
 RegisterHandler("passwd", \&ChangePasswordHandler, 1, 1, 0);  RegisterHandler("passwd", \&ChangePasswordHandler, 1, 1, 0);
Line 878  sub AddUserHandler { Line 867  sub AddUserHandler {
     my $cmd     = shift;      my $cmd     = shift;
     my $tail    = shift;      my $tail    = shift;
     my $client  = shift;      my $client  = shift;
       
     my $userinput = $cmd.":".$tail;     
   
     my $oldumask=umask(0077);  
     my ($udom,$uname,$umode,$npass)=split(/:/,$tail);      my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
       my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
   
     &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);      &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
     chomp($npass);  
     $npass=&unescape($npass);  
     my $proname=propath($udom,$uname);      if($udom eq $currentdomainid) { # Reject new users for other domains...
     my $passfilename="$proname/passwd";  
     &Debug("Password file created will be:".$passfilename);   my $oldumask=umask(0077);
     if (-e $passfilename) {   chomp($npass);
  Failure( $client, "already_exists\n", $userinput);   $npass=&unescape($npass);
     } elsif ($udom ne $currentdomainid) {   my $passfilename  = PasswordPath($udom, $uname);
  Failure($client, "not_right_domain\n", $userinput);   &Debug("Password file created will be:".$passfilename);
     } else {   if (-e $passfilename) {
  my @fpparts=split(/\//,$proname);      Failure( $client, "already_exists\n", $userinput);
  my $fpnow=$fpparts[0].'/'.$fpparts[1].'/'.$fpparts[2];   } else {
  my $fperror='';      my @fpparts=split(/\//,$passfilename);
  for (my $i=3;$i<=$#fpparts;$i++) {      my $fpnow=$fpparts[0].'/'.$fpparts[1].'/'.$fpparts[2];
     $fpnow.='/'.$fpparts[$i];       my $fperror='';
     unless (-e $fpnow) {      for (my $i=3;$i<= ($#fpparts-1);$i++) {
  unless (mkdir($fpnow,0777)) {   $fpnow.='/'.$fpparts[$i]; 
     $fperror="error: ".($!+0)." mkdir failed while attempting "   unless (-e $fpnow) {
  ."makeuser";      &logthis("mkdir $fpnow");
       unless (mkdir($fpnow,0777)) {
    $fperror="error: ".($!+0)." mkdir failed while attempting "
       ."makeuser";
       }
  }   }
     }      }
       unless ($fperror) {
    my $result=&make_passwd_file($uname, $umode,$npass, $passfilename);
    Reply($client, $result, $userinput);     #BUGBUG - could be fail
       } else {
    Failure($client, "$fperror\n", $userinput);
       }
  }   }
  unless ($fperror) {   umask($oldumask);
     my $result=&make_passwd_file($uname, $umode,$npass, $passfilename);      }  else {
     Reply($client, $result, $userinput);     #BUGBUG - could be fail   Failure($client, "not_right_domain\n",
  } else {   $userinput); # Even if we are multihomed.
     Failure($client, "$fperror\n", $userinput);      
  }  
     }      }
     umask($oldumask);  
     return 1;      return 1;
   
 }  }
Line 949  sub ChangeAuthenticationHandler { Line 945  sub ChangeAuthenticationHandler {
     my $userinput  = "$cmd:$tail";              # Reconstruct user input.      my $userinput  = "$cmd:$tail";              # Reconstruct user input.
   
     my ($udom,$uname,$umode,$npass)=split(/:/,$tail);      my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
     chomp($npass);  
     &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);      &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
     $npass=&unescape($npass);  
     my $proname=&propath($udom,$uname);  
     my $passfilename="$proname/passwd";  
     if ($udom ne $currentdomainid) {      if ($udom ne $currentdomainid) {
  Failure( $client, "not_right_domain\n", $client);   Failure( $client, "not_right_domain\n", $client);
     } else {      } else {
  my $result=&make_passwd_file($uname, $umode,$npass,$passfilename);  
  Reply($client, $result, $userinput);   chomp($npass);
   
    $npass=&unescape($npass);
    my $passfilename = PasswordPath($udom, $uname);
    if ($passfilename) { # Not allowed to create a new user!!
       my $result=&make_passwd_file($uname, $umode,$npass,$passfilename);
       Reply($client, $result, $userinput);
    } else {       
       Failure($client, "non_authorized", $userinput); # Fail the user now.
    }
     }      }
     return 1;      return 1;
 }  }
Line 989  sub IsHomeHandler { Line 990  sub IsHomeHandler {
         
     my ($udom,$uname)=split(/:/,$tail);      my ($udom,$uname)=split(/:/,$tail);
     chomp($uname);      chomp($uname);
     my $proname=propath($udom,$uname);      my $passfile = PasswordFilename($udom, $uname);
     if (-e $proname) {      if($passfile) {
  Reply( $client, "found\n", $userinput);   Reply( $client, "found\n", $userinput);
     } else {      } else {
  Failure($client, "not_found\n", $userinput);   Failure($client, "not_found\n", $userinput);
Line 1027  sub UpdateResourceHandler { Line 1028  sub UpdateResourceHandler {
         
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
         
     my $fname=$tail;      my $fname=split(/:/$tail); # This allows interactive testing
       chomp($fname); # with telnet.
   
     my $ownership=ishome($fname);      my $ownership=ishome($fname);
     if ($ownership eq 'not_owner') {      if ($ownership eq 'not_owner') {
  if (-e $fname) {   if (-e $fname) {
Line 1137  sub FetchUserFileHandler { Line 1140  sub FetchUserFileHandler {
 }  }
 RegisterHandler("fetchuserfile", \&FetchUserFileHandler, 0, 1, 0);  RegisterHandler("fetchuserfile", \&FetchUserFileHandler, 0, 1, 0);
 #  #
 #   Authenticate access to a user file.  Question?   The token for athentication  #   Authenticate access to a user file. 
 #   is allowed to be sent as cleartext is this really what we want?  This token  
 #   represents the user's session id.  Once it is forged does this allow too much access??  
 #  #
 # Parameters:  # Parameters:
 #    $cmd      - The command that got us here.  #    $cmd      - The command that got us here.
Line 1149  RegisterHandler("fetchuserfile", \&Fetch Line 1150  RegisterHandler("fetchuserfile", \&Fetch
 #     0        - Requested to exit, caller should shut down.  #     0        - Requested to exit, caller should shut down.
 #     1        - Continue processing.  #     1        - Continue processing.
 sub AuthenticateUserFileAccess {  sub AuthenticateUserFileAccess {
     my $cmd   = shift;      my $cmd       = shift;
     my $tail    = shift;      my $tail      = shift;
     my $client = shift;      my $client    = shift;
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
   
     my ($fname,$session)=split(/:/,$tail);      my ($fname,$session)=split(/:/,$tail);
Line 1189  sub UnsubscribeHandler { Line 1190  sub UnsubscribeHandler {
     my $client   = shift;      my $client   = shift;
     my $userinput= "$cmd:$tail";      my $userinput= "$cmd:$tail";
           
     my $fname = $tail;      my ($fname) = split(/:/,$tail); # This allows for interactive testing
                                       # e.g. manual telnet and unsub:res:
                                       # Otherwise the \r gets in the way. 
       chomp($fname);
       Debug("Unsubscribing $fname");
     if (-e $fname) {      if (-e $fname) {
  Reply($client, &unsub($client,$fname,$clientip), $userinput);   Debug("Exists");
    Reply($client, &unsub($fname,$clientip), $userinput);
     } else {      } else {
  Failure($client, "not_found\n", $userinput);   Failure($client, "not_found\n", $userinput);
     }      }
     return 1;      return 1;
 }  }
 RegisterHandler("unusb", \&UnsubscribeHandler, 0, 1, 0);  RegisterHandler("unsub", \&UnsubscribeHandler, 0, 1, 0);
   
 #   Subscribe to a resource.  #   Subscribe to a resource
 #  #
 # Parameters:  # Parameters:
 #    $cmd      - The command that got us here.  #    $cmd      - The command that got us here.
Line 1273  sub ActivityLogEntryHandler { Line 1279  sub ActivityLogEntryHandler {
  print $hfh "$now:$clientname:$what\n";   print $hfh "$now:$clientname:$what\n";
  Reply( $client, "ok\n", $userinput);    Reply( $client, "ok\n", $userinput); 
     } else {      } else {
  Reply($client, "error: ".($!+0)." IO::File->new Failed "   Failure($client, "error: ".($!+0)." IO::File->new Failed "
       ."while attempting log\n",         ."while attempting log\n", 
       $userinput);        $userinput);
     }      }
Line 1300  sub PutUserProfileEntry { Line 1306  sub PutUserProfileEntry {
     my $tail      = shift;      my $tail      = shift;
     my $client    = shift;      my $client    = shift;
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
       
     my ($udom,$uname,$namespace,$what) =split(/:/,$tail);      my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
     $namespace=~s/\//\_/g;  
     $namespace=~s/\W//g;  
     if ($namespace ne 'roles') {      if ($namespace ne 'roles') {
  chomp($what);   chomp($what);
  my $proname=propath($udom,$uname);   my $hashref = TieUserHash($udom, $uname, $namespace,
  my $now=time;    &GDBM_WRCREAT(),"P",$what);
  unless ($namespace=~/^nohist\_/) {   if($hashref) {
     my $hfh;      my @pairs=split(/\&/,$what);
     if ($hfh=IO::File->new(">>$proname/$namespace.hist")) {   
  print $hfh "P:$now:$what\n";   
     }  
  }  
  my @pairs=split(/\&/,$what);  
  my %hash;  
  if (tie(%hash,'GDBM_File',"$proname/$namespace.db",  
  &GDBM_WRCREAT(),0640)) {  
     foreach my $pair (@pairs) {      foreach my $pair (@pairs) {
  my ($key,$value)=split(/=/,$pair);   my ($key,$value)=split(/=/,$pair);
  $hash{$key}=$value;   $hashref->{$key}=$value;
     }      }
     if (untie(%hash)) {      if (untie(%$hashref)) {
  Reply( $client, "ok\n", $userinput);   Reply( $client, "ok\n", $userinput);
     } else {      } else {
  Failure($client, "error: ".($!+0)." untie(GDBM) failed ".   Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
Line 1334  sub PutUserProfileEntry { Line 1330  sub PutUserProfileEntry {
      "while attempting put\n", $userinput);       "while attempting put\n", $userinput);
  }   }
     } else {      } else {
  Failure( $client, "refused\n", $userinput);          Failure( $client, "refused\n", $userinput);
     }      }
          
     return 1;      return 1;
 }  }
 RegisterHandler("put", \&PutUserProfileEntry, 0, 1, 0);  RegisterHandler("put", \&PutUserProfileEntry, 0, 1, 0);
Line 1360  sub IncrementUserValueHandler { Line 1356  sub IncrementUserValueHandler {
     my $cmd         = shift;      my $cmd         = shift;
     my $tail        = shift;      my $tail        = shift;
     my $client      = shift;      my $client      = shift;
     my $userinput   = shift;      my $userinput   = "$cmd:$tail";
   
     my ($udom,$uname,$namespace,$what) =split(/:/,$tail);      my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
     $namespace=~s/\//\_/g;  
     $namespace=~s/\W//g;  
     if ($namespace ne 'roles') {      if ($namespace ne 'roles') {
  chomp($what);          chomp($what);
  my $proname=propath($udom,$uname);   my $hashref = TieUserHash($udom, $uname,
  my $now=time;    $namespace, &GDBM_WRCREAT(),
  unless ($namespace=~/^nohist\_/) {    "P",$what);
     my $hfh;   if ($hashref) {
     if ($hfh=IO::File->new(">>$proname/$namespace.hist")) {       my @pairs=split(/\&/,$what);
  print $hfh "P:$now:$what\n";  
     }  
  }  
  my @pairs=split(/\&/,$what);  
  my %hash;  
  if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),  
  0640)) {  
     foreach my $pair (@pairs) {      foreach my $pair (@pairs) {
  my ($key,$value)=split(/=/,$pair);   my ($key,$value)=split(/=/,$pair);
  # We could check that we have a number...   # We could check that we have a number...
  if (! defined($value) || $value eq '') {   if (! defined($value) || $value eq '') {
     $value = 1;      $value = 1;
  }   }
  $hash{$key}+=$value;   $hashref->{$key}+=$value;
     }      }
     if (untie(%hash)) {      if (untie(%$hashref)) {
  Reply( $client, "ok\n", $userinput);   Reply( $client, "ok\n", $userinput);
     } else {      } else {
  Failure($client, "error: ".($!+0)." untie(GDBM) failed ".   Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
  "while attempting put\n", $userinput);   "while attempting inc\n", $userinput);
     }      }
  } else {   } else {
     Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".      Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
     "while attempting put\n", $userinput);      "while attempting inc\n", $userinput);
  }   }
     } else {      } else {
  Failure($client, "refused\n", $userinput);   Failure($client, "refused\n", $userinput);
     }      }
       
     return 1;      return 1;
 }  }
 RegisterHandler("inc", \&IncrementUserValueHandler, 0, 1, 0);  RegisterHandler("inc", \&IncrementUserValueHandler, 0, 1, 0);
Line 1430  sub RolesPutHandler { Line 1417  sub RolesPutHandler {
     my $client     = shift;      my $client     = shift;
     my $userinput  = "$cmd:$tail";      my $userinput  = "$cmd:$tail";
   
     my ($exedom,$exeuser,$udom,$uname,$what)   =split(/:/,$tail);      my ( $exedom, $exeuser, $udom, $uname,  $what) = split(/:/,$tail);
     &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.      
    "what = ".$what);  
     my $namespace='roles';      my $namespace='roles';
     chomp($what);      chomp($what);
     my $proname=propath($udom,$uname);      my $hashref = TieUserHash($udom, $uname, $namespace,
     my $now=time;        &GDBM_WRCREAT(), "P",
         "$exedom:$exeuser:$what");
     #      #
     #  Log the attempt to set a role.  The {}'s here ensure that the file       #  Log the attempt to set a role.  The {}'s here ensure that the file 
     #  handle is open for the minimal amount of time.  Since the flush      #  handle is open for the minimal amount of time.  Since the flush
     #  is done on close this improves the chances the log will be an un-      #  is done on close this improves the chances the log will be an un-
     #  corrupted ordered thing.      #  corrupted ordered thing.
     {      if ($hashref) {
  my $hfh;   my @pairs=split(/\&/,$what);
  if ($hfh=IO::File->new(">>$proname/$namespace.hist")) {   
     print $hfh "P:$now:$exedom:$exeuser:$what\n";  
  }  
     }  
     my @pairs=split(/\&/,$what);  
     my %hash;  
     if (tie(%hash,'GDBM_File',"$proname/$namespace.db", &GDBM_WRCREAT(),0640)) {  
  foreach my $pair (@pairs) {   foreach my $pair (@pairs) {
     my ($key,$value)=split(/=/,$pair);      my ($key,$value)=split(/=/,$pair);
             &ManagePermissions($key, $udom, $uname,      &ManagePermissions($key, $udom, $uname,
                                &GetAuthType( $udom, $uname));         &GetAuthType( $udom, $uname));
             $hash{$key}=$value;      $hashref->{$key}=$value;
  }   }
  if (untie(%hash)) {   if (untie($hashref)) {
     Reply($client, "ok\n", $userinput);      Reply($client, "ok\n", $userinput);
  } else {   } else {
     Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".      Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
Line 1498  sub RolesDeleteHandler { Line 1479  sub RolesDeleteHandler {
    "what = ".$what);     "what = ".$what);
     my $namespace='roles';      my $namespace='roles';
     chomp($what);      chomp($what);
     my $proname=propath($udom,$uname);      my $hashref = TieUserHash($udom, $uname, $namespace,
     my $now=time;        &GDBM_WRCREAT(), "D",
     #        "$exedom:$exeuser:$what");
     #   Log the attempt. This {}'ing is done to ensure that the      
     #   logfile is flushed and closed as quickly as possible.  Hopefully      if ($hashref) {
     #   this preserves both time ordering and reduces the probability that   my @rolekeys=split(/\&/,$what);
     #   messages will be interleaved.  
     #  
     {  
  my $hfh;  
  if ($hfh=IO::File->new(">>$proname/$namespace.hist")) {   
     print $hfh "D:$now:$exedom:$exeuser:$what\n";  
  }  
     }  
     my @rolekeys=split(/\&/,$what);  
     my %hash;  
     if (tie(%hash,'GDBM_File',"$proname/$namespace.db", &GDBM_WRCREAT(),0640)) {  
  foreach my $key (@rolekeys) {   foreach my $key (@rolekeys) {
     delete $hash{$key};      delete $hashref->{$key};
  }   }
  if (untie(%hash)) {   if (untie(%$hashref)) {
     Reply($client, "ok\n", $userinput);      Reply($client, "ok\n", $userinput);
  } else {   } else {
     Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".      Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
      "while attempting rolesdel\n", $userinput);       "while attempting rolesdel\n", $userinput);
  }   }
     } else {      } else {
  Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".          Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
  "while attempting rolesdel\n", $userinput);   "while attempting rolesdel\n", $userinput);
     }      }
           
Line 1559  sub GetProfileEntry { Line 1530  sub GetProfileEntry {
     my $userinput= "$cmd:$tail";      my $userinput= "$cmd:$tail";
         
     my ($udom,$uname,$namespace,$what) = split(/:/,$tail);      my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
     $namespace=~s/\//\_/g;  
     $namespace=~s/\W//g;  
     chomp($what);      chomp($what);
     my @queries=split(/\&/,$what);      my $hashref = TieUserHash($udom, $uname, $namespace,
     my $proname=propath($udom,$uname);        &GDBM_READER());
     my $qresult='';      if ($hashref) {
     my %hash;          my @queries=split(/\&/,$what);
     if (tie(%hash,'GDBM_File',"$proname/$namespace.db", &GDBM_READER(),0640)) {          my $qresult='';
   
  for (my $i=0;$i<=$#queries;$i++) {   for (my $i=0;$i<=$#queries;$i++) {
     $qresult.="$hash{$queries[$i]}&";    # Presumably failure gives empty string.      $qresult.="$hashref->{$queries[$i]}&";    # Presumably failure gives empty string.
  }   }
  if (untie(%hash)) {   $qresult=~s/\&$//;              # Remove trailing & from last lookup.
     $qresult=~s/\&$//;              # Remove trailing & from last lookup.   if (untie(%$hashref)) {
     Reply($client, "$qresult\n", $userinput);      Reply($client, "$qresult\n", $userinput);
  } else {   } else {
     Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".      Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
Line 1615  sub GetProfileEntryEncrypted { Line 1585  sub GetProfileEntryEncrypted {
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
         
     my ($cmd,$udom,$uname,$namespace,$what) = split(/:/,$userinput);      my ($cmd,$udom,$uname,$namespace,$what) = split(/:/,$userinput);
     $namespace=~s/\//\_/g;  
     $namespace=~s/\W//g;  
     chomp($what);      chomp($what);
     my @queries=split(/\&/,$what);      my $hashref = TieUserHash($udom, $uname, $namespace,
     my $proname=propath($udom,$uname);    &GDBM_READER());
     my $qresult='';      if ($hashref) {
     my %hash;          my @queries=split(/\&/,$what);
     if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {          my $qresult='';
  for (my $i=0;$i<=$#queries;$i++) {   for (my $i=0;$i<=$#queries;$i++) {
     $qresult.="$hash{$queries[$i]}&";      $qresult.="$hashref->{$queries[$i]}&";
  }   }
  if (untie(%hash)) {   if (untie(%$hashref)) {
     $qresult=~s/\&$//;      $qresult=~s/\&$//;
     if ($cipher) {      if ($cipher) {
  my $cmdlength=length($qresult);   my $cmdlength=length($qresult);
  $qresult.="         ";   $qresult.="         ";
  my $encqresult='';   my $encqresult='';
  for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {   for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
     $encqresult.= unpack("H16", $cipher->encrypt(substr($qresult,      $encqresult.= unpack("H16", 
  $encidx,   $cipher->encrypt(substr($qresult,
  8)));   $encidx,
    8)));
  }   }
  Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);   Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
     } else {      } else {
Line 1652  sub GetProfileEntryEncrypted { Line 1621  sub GetProfileEntryEncrypted {
           
     return 1;      return 1;
 }  }
 RegisterHandler("eget", \&GetProfileEncrypted, 0, 1, 0);  RegisterHandler("eget", \&GetProfileEntryEncrypted, 0, 1, 0);
   
 #  #
 #   Deletes a key in a user profile database.  #   Deletes a key in a user profile database.
Line 1672  RegisterHandler("eget", \&GetProfileEncr Line 1641  RegisterHandler("eget", \&GetProfileEncr
 #     0   - Exit server.  #     0   - Exit server.
 #  #
 #  #
 sub DeletProfileEntry {  
   sub DeleteProfileEntry {
     my $cmd      = shift;      my $cmd      = shift;
     my $tail     = shift;      my $tail     = shift;
     my $client   = shift;      my $client   = shift;
     my $userinput = "cmd:$tail";      my $userinput = "cmd:$tail";
   
     my ($udom,$uname,$namespace,$what) = split(/:/,$tail);      my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
     $namespace=~s/\//\_/g;  
     $namespace=~s/\W//g;  
     chomp($what);      chomp($what);
     my $proname=propath($udom,$uname);      my $hashref = TieUserHash($udom, $uname, $namespace,
     my $now=time;    &GDBM_WRCREAT(),
     unless ($namespace=~/^nohist\_/) {    "D",$what);
  my $hfh;      if ($hashref) {
  if ($hfh=IO::File->new(">>$proname/$namespace.hist")) {           my @keys=split(/\&/,$what);
     print $hfh "D:$now:$what\n";   
  }  
     }  
     my @keys=split(/\&/,$what);  
     my %hash;  
     if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {  
  foreach my $key (@keys) {   foreach my $key (@keys) {
     delete($hash{$key});      delete($hashref->{$key});
  }   }
  if (untie(%hash)) {   if (untie(%$hashref)) {
     Reply($client, "ok\n", $userinput);      Reply($client, "ok\n", $userinput);
  } else {   } else {
     Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".      Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
Line 1731  sub GetProfileKeys { Line 1693  sub GetProfileKeys {
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
   
     my ($udom,$uname,$namespace)=split(/:/,$tail);      my ($udom,$uname,$namespace)=split(/:/,$tail);
     $namespace=~s/\//\_/g;  
     $namespace=~s/\W//g;  
     my $proname=propath($udom,$uname);  
     my $qresult='';      my $qresult='';
     my %hash;      my $hashref = TieUserHash($udom, $uname, $namespace,
     if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {    &GDBM_READER());
  foreach my $key (keys %hash) {      if ($hashref) {
    foreach my $key (keys %$hashref) {
     $qresult.="$key&";      $qresult.="$key&";
  }   }
  if (untie(%hash)) {   if (untie(%$hashref)) {
     $qresult=~s/\&$//;      $qresult=~s/\&$//;
     Reply($client, "$qresult\n", $userinput);      Reply($client, "$qresult\n", $userinput);
  } else {   } else {
Line 1781  sub DumpProfileDatabase { Line 1741  sub DumpProfileDatabase {
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
         
     my ($udom,$uname,$namespace) = split(/:/,$tail);      my ($udom,$uname,$namespace) = split(/:/,$tail);
     $namespace=~s/\//\_/g;      my $hashref = TieUserHash($udom, $uname, $namespace,
     $namespace=~s/\W//g;    &GDBM_READER());
     my $qresult='';      if ($hashref) {
     my $proname=propath($udom,$uname);  
     my %hash;  
     if (tie(%hash,'GDBM_File',"$proname/$namespace.db", &GDBM_READER(),0640)) {  
  # Structure of %data:   # Structure of %data:
  # $data{$symb}->{$parameter}=$value;   # $data{$symb}->{$parameter}=$value;
  # $data{$symb}->{'v.'.$parameter}=$version;   # $data{$symb}->{'v.'.$parameter}=$version;
  # since $parameter will be unescaped, we do not   # since $parameter will be unescaped, we do not
  # have to worry about silly parameter names...    # have to worry about silly parameter names...
   
           my $qresult='';
  my %data = ();                     # A hash of anonymous hashes..   my %data = ();                     # A hash of anonymous hashes..
  while (my ($key,$value) = each(%hash)) {   while (my ($key,$value) = each(%$hashref)) {
     my ($v,$symb,$param) = split(/:/,$key);      my ($v,$symb,$param) = split(/:/,$key);
     next if ($v eq 'version' || $symb eq 'keys');      next if ($v eq 'version' || $symb eq 'keys');
     next if (exists($data{$symb}) &&       next if (exists($data{$symb}) && 
Line 1802  sub DumpProfileDatabase { Line 1761  sub DumpProfileDatabase {
     $data{$symb}->{$param}=$value;      $data{$symb}->{$param}=$value;
     $data{$symb}->{'v.'.$param}=$v;      $data{$symb}->{'v.'.$param}=$v;
  }   }
  if (untie(%hash)) {   if (untie(%$hashref)) {
     while (my ($symb,$param_hash) = each(%data)) {      while (my ($symb,$param_hash) = each(%data)) {
  while(my ($param,$value) = each (%$param_hash)){   while(my ($param,$value) = each (%$param_hash)){
     next if ($param =~ /^v\./);       # Ignore versions...      next if ($param =~ /^v\./);       # Ignore versions...
Line 1858  sub DumpWithRegexp { Line 1817  sub DumpWithRegexp {
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
   
     my ($udom,$uname,$namespace,$regexp)=split(/:/,$tail);      my ($udom,$uname,$namespace,$regexp)=split(/:/,$tail);
     $namespace=~s/\//\_/g;  
     $namespace=~s/\W//g;  
     if (defined($regexp)) {      if (defined($regexp)) {
  $regexp=&unescape($regexp);   $regexp=&unescape($regexp);
     } else {      } else {
  $regexp='.';   $regexp='.';
     }      }
     my $qresult='';      my $hashref =TieUserHash($udom, $uname, $namespace,
     my $proname=propath($udom,$uname);   &GDBM_READER());
     my %hash;      if ($hashref) {
     if (tie(%hash,'GDBM_File',"$proname/$namespace.db",          my $qresult='';
     &GDBM_READER(),0640)) {   while (my ($key,$value) = each(%$hashref)) {
  while (my ($key,$value) = each(%hash)) {  
     if ($regexp eq '.') {      if ($regexp eq '.') {
  $qresult.=$key.'='.$value.'&';   $qresult.=$key.'='.$value.'&';
     } else {      } else {
Line 1880  sub DumpWithRegexp { Line 1836  sub DumpWithRegexp {
  }   }
     }      }
  }   }
  if (untie(%hash)) {   if (untie(%$hashref)) {
     chop($qresult);      chop($qresult);
     Reply($client, "$qresult\n", $userinput);      Reply($client, "$qresult\n", $userinput);
  } else {   } else {
Line 1896  sub DumpWithRegexp { Line 1852  sub DumpWithRegexp {
 }  }
 RegisterHandler("dump", \&DumpWithRegexp, 0, 1, 0);  RegisterHandler("dump", \&DumpWithRegexp, 0, 1, 0);
   
 #  Store an aitem in any database but the roles database.  #  Store an aitem in any resource meta data(?) or database with
   #  versioning?
 #  #
 #  Parameters:  #  Parameters:
 #    $cmd                - Request command keyword.  #    $cmd                - Request command keyword.
Line 1922  sub StoreHandler { Line 1879  sub StoreHandler {
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
   
     my ($udom,$uname,$namespace,$rid,$what) =split(/:/,$tail);      my ($udom,$uname,$namespace,$rid,$what) =split(/:/,$tail);
     $namespace=~s/\//\_/g;  
     $namespace=~s/\W//g;  
     if ($namespace ne 'roles') {      if ($namespace ne 'roles') {
   
  chomp($what);   chomp($what);
  my $proname=propath($udom,$uname);  
  my $now=time;  
  unless ($namespace=~/^nohist\_/) {  
     my $hfh;  
     if ($hfh=IO::File->new(">>$proname/$namespace.hist")) {  
  print $hfh "P:$now:$rid:$what\n";   
     }  
  }  
  my @pairs=split(/\&/,$what);   my @pairs=split(/\&/,$what);
  my %hash;   my $hashref  = TieUserHash($udom, $uname, $namespace,
  if (tie(%hash,'GDBM_File',"$proname/$namespace.db",         &GDBM_WRCREAT(), "P",
  &GDBM_WRCREAT(),0640)) {         "$rid:$what");
     my @previouskeys=split(/&/,$hash{"keys:$rid"});   if ($hashref) {
       my $now = time;
       my @previouskeys=split(/&/,$hashref->{"keys:$rid"});
     my $key;      my $key;
     $hash{"version:$rid"}++;      $hashref->{"version:$rid"}++;
     my $version=$hash{"version:$rid"};      my $version=$hashref->{"version:$rid"};
     my $allkeys='';       my $allkeys=''; 
     foreach my $pair (@pairs) {      foreach my $pair (@pairs) {
  my ($key,$value)=split(/=/,$pair);   my ($key,$value)=split(/=/,$pair);
  $allkeys.=$key.':';   $allkeys.=$key.':';
  $hash{"$version:$rid:$key"}=$value;   $hashref->{"$version:$rid:$key"}=$value;
     }      }
     $hash{"$version:$rid:timestamp"}=$now;      $hashref->{"$version:$rid:timestamp"}=$now;
     $allkeys.='timestamp';      $allkeys.='timestamp';
     $hash{"$version:keys:$rid"}=$allkeys;      $hashref->{"$version:keys:$rid"}=$allkeys;
     if (untie(%hash)) {      if (untie($hashref)) {
  Reply($client, "ok\n", $userinput);   Reply($client, "ok\n", $userinput);
     } else {      } else {
  Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".   Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
Line 2028  sub RestoreHandler { Line 1978  sub RestoreHandler {
   
   
 }  }
 RegisterHandler("restor", \&RestoreHandler, 0,1,0);  RegisterHandler("restore", \&RestoreHandler, 0,1,0);
   
 #  #
 #   Add a chat message to to a discussion board.  #   Add a chat message to to a discussion board.
Line 2212  sub PutCourseIdHandler { Line 2162  sub PutCourseIdHandler {
   
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
   
     my ($udom,$what)=split(/:/,$tail);      my ($udom, $what) = split(/:/, $tail);
     chomp($what);      chomp($what);
     $udom=~s/\W//g;  
     my $proname=  
  "$perlvar{'lonUsersDir'}/$udom/nohist_courseids";  
     my $now=time;      my $now=time;
     my @pairs=split(/\&/,$what);      my @pairs=split(/\&/,$what);
     my %hash;  
     if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_WRCREAT(),0640)) {      my $hashref = TieDomainHash($udom, "nohist_courseids", &GDBM_WRCREAT());
       if ($hashref) {
  foreach my $pair (@pairs) {   foreach my $pair (@pairs) {
     my ($key,$value)=split(/=/,$pair);      my ($key,$value)=split(/=/,$pair);
     $hash{$key}=$value.':'.$now;      $hashref->{$key}=$value.':'.$now;
  }   }
  if (untie(%hash)) {   if (untie(%$hashref)) {
     Reply($client, "ok\n", $userinput);      Reply($client, "ok\n", $userinput);
  } else {   } else {
     Failure( $client, "error: ".($!+0)      Failure( $client, "error: ".($!+0)
Line 2280  sub DumpCourseIdHandler { Line 2228  sub DumpCourseIdHandler {
     }      }
     unless (defined($since)) { $since=0; }      unless (defined($since)) { $since=0; }
     my $qresult='';      my $qresult='';
     my $proname = "$perlvar{'lonUsersDir'}/$udom/nohist_courseids";      logthis(" Looking for $description  since $since");
     my %hash;      my $hashref = TieDomainHash($udom, "nohist_courseids", &GDBM_WRCREAT());
     if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_READER(),0640)) {      if ($hashref) {
  while (my ($key,$value) = each(%hash)) {   while (my ($key,$value) = each(%$hashref)) {
     my ($descr,$lasttime)=split(/\:/,$value);      my ($descr,$lasttime)=split(/\:/,$value);
       logthis("Got:  key = $key descr = $descr time: $lasttime");
     if ($lasttime<$since) {       if ($lasttime<$since) { 
    logthis("Skipping .. too early");
  next;    next; 
     }      }
     if ($description eq '.') {      if ($description eq '.') {
    logthis("Adding wildcard match");
  $qresult.=$key.'='.$descr.'&';   $qresult.=$key.'='.$descr.'&';
     } else {      } else {
  my $unescapeVal = &unescape($descr);   my $unescapeVal = &unescape($descr);
    logthis("Matching with $unescapeVal");
  if (eval('$unescapeVal=~/$description/i')) {   if (eval('$unescapeVal=~/$description/i')) {
       logthis("Adding on match");
     $qresult.="$key=$descr&";      $qresult.="$key=$descr&";
  }   }
     }      }
  }   }
  if (untie(%hash)) {   if (untie(%$hashref)) {
     chop($qresult);      chop($qresult);
     Reply($client, "$qresult\n", $userinput);      Reply($client, "$qresult\n", $userinput);
  } else {   } else {
Line 2338  sub PutIdHandler { Line 2291  sub PutIdHandler {
   
     my ($udom,$what)=split(/:/,$tail);      my ($udom,$what)=split(/:/,$tail);
     chomp($what);      chomp($what);
     $udom=~s/\W//g;  
     my $proname="$perlvar{'lonUsersDir'}/$udom/ids";  
     my $now=time;  
     {  
  my $hfh;  
  if ($hfh=IO::File->new(">>$proname.hist")) {   
     print $hfh "P:$now:$what\n";   
  }  
     }  
     my @pairs=split(/\&/,$what);      my @pairs=split(/\&/,$what);
     my %hash;      my $hashref = TieDomainHash($udom, "ids", &GDBM_WRCREAT(),
     if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_WRCREAT(),0640)) {   "P", $what);
       if ($hashref) {
  foreach my $pair (@pairs) {   foreach my $pair (@pairs) {
     my ($key,$value)=split(/=/,$pair);      my ($key,$value)=split(/=/,$pair);
     $hash{$key}=$value;      $hashref->{$key}=$value;
  }   }
  if (untie(%hash)) {   if (untie(%$hashref)) {
     Reply($client, "ok\n", $userinput);      Reply($client, "ok\n", $userinput);
  } else {   } else {
     Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".      Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
Line 2392  sub GetIdHandler { Line 2337  sub GetIdHandler {
     my $cmd    = shift;      my $cmd    = shift;
     my $tail   = shift;      my $tail   = shift;
     my $client = shift;      my $client = shift;
       
     my $userinput = "$client:$tail";      my $userinput = "$client:$tail";
       
     my ($udom,$what)=split(/:/,$tail);      my ($udom,$what)=split(/:/,$tail);
     chomp($what);      chomp($what);
     $udom=~s/\W//g;  
     my $proname="$perlvar{'lonUsersDir'}/$udom/ids";  
     my @queries=split(/\&/,$what);      my @queries=split(/\&/,$what);
     my $qresult='';      my $qresult='';
     my %hash;      my $hashref = TieDomainHash($udom, "ids", &GDBM_READER());
     if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_READER(),0640)) {      if ($hashref) {
  for (my $i=0;$i<=$#queries;$i++) {   for (my $i=0;$i<=$#queries;$i++) {
     $qresult.="$hash{$queries[$i]}&";      $qresult.="$hashref->{$queries[$i]}&";
  }   }
  if (untie(%hash)) {   if (untie(%$hashref)) {
     $qresult=~s/\&$//;      $qresult=~s/\&$//;
     Reply($client, "$qresult\n", $userinput);      Reply($client, "$qresult\n", $userinput);
  } else {   } else {
Line 2417  sub GetIdHandler { Line 2360  sub GetIdHandler {
  Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".   Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
  "while attempting idget\n",$userinput);   "while attempting idget\n",$userinput);
     }      }
       
     return 1;      return 1;
 }  }
   
Line 2485  sub TmpGetHandler { Line 2428  sub TmpGetHandler {
     my $id        = shift;      my $id        = shift;
     my $client    = shift;      my $client    = shift;
     my $userinput = "$cmd:$id";       my $userinput = "$cmd:$id"; 
       
     chomp($id);      chomp($id);
     $id=~s/\W/\_/g;      $id=~s/\W/\_/g;
     my $store;      my $store;
Line 2520  sub TmpDelHandler { Line 2463  sub TmpDelHandler {
     my $cmd      = shift;      my $cmd      = shift;
     my $id       = shift;      my $id       = shift;
     my $client   = shift;      my $client   = shift;
       
     my $userinput= "$cmd:$id";      my $userinput= "$cmd:$id";
       
     chomp($id);      chomp($id);
     $id=~s/\W/\_/g;      $id=~s/\W/\_/g;
     my $execdir=$perlvar{'lonDaemons'};      my $execdir=$perlvar{'lonDaemons'};
Line 2532  sub TmpDelHandler { Line 2475  sub TmpDelHandler {
  Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".   Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
  "while attempting tmpdel\n", $userinput);   "while attempting tmpdel\n", $userinput);
     }      }
       
     return 1;      return 1;
   
 }  }
Line 2560  sub LsHandler { Line 2503  sub LsHandler {
   
     my $userinput = "$cmd:$ulsdir";      my $userinput = "$cmd:$ulsdir";
   
       chomp($ulsdir);
   
     my $ulsout='';      my $ulsout='';
     my $ulsfn;      my $ulsfn;
       logthis("ls for '$ulsdir'");
     if (-e $ulsdir) {      if (-e $ulsdir) {
    logthis("ls - directory exists");
  if(-d $ulsdir) {   if(-d $ulsdir) {
       logthis("ls  $ulsdir is a file");
     if (opendir(LSDIR,$ulsdir)) {      if (opendir(LSDIR,$ulsdir)) {
  while ($ulsfn=readdir(LSDIR)) {   while ($ulsfn=readdir(LSDIR)) {
     my @ulsstats=stat($ulsdir.'/'.$ulsfn);      my @ulsstats=stat($ulsdir.'/'.$ulsfn);
Line 2747  sub ProcessRequest { Line 2695  sub ProcessRequest {
     # Split off the request keyword from the rest of the stuff.      # Split off the request keyword from the rest of the stuff.
         
     my ($command, $tail) = split(/:/, $userinput, 2);      my ($command, $tail) = split(/:/, $userinput, 2);
       chomp($command);
       chomp($tail);
   
     Debug("Command received: $command, encoded = $wasenc");      Debug("Command received: $command, encoded = $wasenc");
   
Line 2788  sub ProcessRequest { Line 2738  sub ProcessRequest {
     $KeepGoing = &$Handler($command, $tail, $client);      $KeepGoing = &$Handler($command, $tail, $client);
  } else {   } else {
     Debug("Refusing to dispatch because ok is false");      Debug("Refusing to dispatch because ok is false");
     Failure($client, "refused", $userinput);      Failure($client, "refused\n", $userinput);
  }   }
   
   
Line 3860  sub subsqlreply { Line 3810  sub subsqlreply {
   
 sub propath {  sub propath {
     my ($udom,$uname)=@_;      my ($udom,$uname)=@_;
       Debug("Propath:$udom:$uname");
     $udom=~s/\W//g;      $udom=~s/\W//g;
     $uname=~s/\W//g;      $uname=~s/\W//g;
       Debug("Propath2:$udom:$uname");
     my $subdir=$uname.'__';      my $subdir=$uname.'__';
     $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;      $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
     my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname";      my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
       Debug("Propath returning $proname");
     return $proname;      return $proname;
 }   } 
   
Line 3872  sub propath { Line 3825  sub propath {
   
 sub ishome {  sub ishome {
     my $author=shift;      my $author=shift;
       Debug("ishome: $author");
     $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;      $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
       Debug("     after big regsub: $author");
     my ($udom,$uname)=split(/\//,$author);      my ($udom,$uname)=split(/\//,$author);
       Debug("      domain: $udom  user: $uname");
     my $proname=propath($udom,$uname);      my $proname=propath($udom,$uname);
       Debug("     path = $proname");
     if (-e $proname) {      if (-e $proname) {
  return 'owner';   return 'owner';
     } else {      } else {
Line 4100  sub ManagePermissions { Line 4057  sub ManagePermissions {
     my $authtype= shift;      my $authtype= shift;
   
     # See if the request is of the form /$domain/_au      # See if the request is of the form /$domain/_au
     &logthis("ruequest is $request");      &logthis("request is $request");
     if($request =~ /^(\/$domain\/_au)$/) { # It's an author rolesput...      if($request =~ /^(\/$domain\/_au)$/) { # It's an author rolesput...
  my $execdir = $perlvar{'lonDaemons'};   my $execdir = $perlvar{'lonDaemons'};
  my $userhome= "/home/$user" ;   my $userhome= "/home/$user" ;
Line 4108  sub ManagePermissions { Line 4065  sub ManagePermissions {
  system("$execdir/lchtmldir $userhome $user $authtype");   system("$execdir/lchtmldir $userhome $user $authtype");
     }      }
 }  }
   
   #
   #  Return the full path of a user password file, whether it exists or not.
   # Parameters:
   #   domain     - Domain in which the password file lives.
   #   user       - name of the user.
   # Returns:
   #    Full passwd path:
   #
   sub PasswordPath {
       my $domain = shift;
       my $user   = shift;
   
       my $path   = &propath($domain, $user);
       $path  .= "/passwd";
   
       return $path;
   }
   
   #   Password Filename
   #   Returns the path to a passwd file given domain and user... only if
   #  it exists.
   # Parameters:
   #   domain    - Domain in which to search.
   #   user      - username.
   # Returns:
   #   - If the password file exists returns its path.
   #   - If the password file does not exist, returns undefined.
   #
   sub PasswordFilename {
       my $domain    = shift;
       my $user      = shift;
   
       Debug ("PasswordFilename called: dom = $domain user = $user");
   
       my $path  = PasswordPath($domain, $user);
       Debug("PasswordFilename got path: $path");
       if(-e $path) {
    return $path;
       } else {
    return undef;
       }
   }
   
   #
   #   Rewrite the contents of the user's passwd file.
   #  Parameters:
   #    domain    - domain of the user.
   #    name      - User's name.
   #    contents  - New contents of the file.
   # Returns:
   #   0    - Failed.
   #   1    - Success.
   #
   sub RewritePwFile {
       my $domain   = shift;
       my $user     = shift;
       my $contents = shift;
   
       my $file = PasswordFilename($domain, $user);
       if (defined $file) {
    my $pf = IO::File->new(">$file");
    if($pf) {
       print $pf "$contents\n";
       return 1;
    } else {
       return 0;
    }
       } else {
    return 0;
       }
   
   }
 #  #
 #   GetAuthType - Determines the authorization type of a user in a domain.  #   GetAuthType - Determines the authorization type of a user in a domain.
   
Line 4118  sub GetAuthType { Line 4148  sub GetAuthType {
     my $user   = shift;      my $user   = shift;
   
     Debug("GetAuthType( $domain, $user ) \n");      Debug("GetAuthType( $domain, $user ) \n");
     my $proname    = &propath($domain, $user);       my $passwdfile = PasswordFilename($domain, $user);
     my $passwdfile = "$proname/passwd";      if( defined $passwdfile ) {
     if( -e $passwdfile ) {  
  my $pf = IO::File->new($passwdfile);   my $pf = IO::File->new($passwdfile);
  my $realpassword = <$pf>;   my $realpassword = <$pf>;
  chomp($realpassword);   chomp($realpassword);
  Debug("Password info = $realpassword\n");   Debug("Password info = $realpassword\n");
  my ($authtype, $contentpwd) = split(/:/, $realpassword);   return $realpassword;
  Debug("Authtype = $authtype, content = $contentpwd\n");  
  my $availinfo = '';  
  if($authtype eq 'krb4' or $authtype eq 'krb5') {  
     $availinfo = $contentpwd;  
  }  
   
  return "$authtype:$availinfo";  
     } else {      } else {
  Debug("Returning nouser");   Debug("Returning nouser");
  return "nouser";   return "nouser";
     }      }
 }  }
   
   #
   #  Validate a user given their domain, name and password.  This utility
   #  function is used by both  AuthenticateHandler and ChangePasswordHandler
   #  to validate the login credentials of a user.
   # Parameters:
   #    $domain    - The domain being logged into (this is required due to
   #                 the capability for multihomed systems.
   #    $user      - The name of the user being validated.
   #    $password  - The user's propoposed password.
   #
   # Returns:
   #     1        - The domain,user,pasword triplet corresponds to a valid
   #                user.
   #     0        - The domain,user,password triplet is not a valid user.
   #
   sub ValidateUser {
       my $domain  = shift;
       my $user    = shift;
       my $password= shift;
   
       # Why negative ~pi you may well ask?  Well this function is about
       # authentication, and therefore very important to get right.
       # I've initialized the flag that determines whether or not I've 
       # validated correctly to a value it's not supposed to get.
       # At the end of this function. I'll ensure that it's not still that
       # value so we don't just wind up returning some accidental value
       # as a result of executing an unforseen code path that
       # did not set $validated.
   
       my $validated = -3.14159;
   
       #  How we authenticate is determined by the type of authentication
       #  the user has been assigned.  If the authentication type is
       #  "nouser", the user does not exist so we will return 0.
   
       my $contents = GetAuthType($domain, $user);
       my ($howpwd, $contentpwd) = split(/:/, $contents);
   
       my $null = pack("C",0); # Used by kerberos auth types.
   
       if ($howpwd ne 'nouser') {
   
    if($howpwd eq "internal") { # Encrypted is in local password file.
       $validated = (crypt($password, $contentpwd) eq $contentpwd);
    }
    elsif ($howpwd eq "unix") { # User is a normal unix user.
       $contentpwd = (getpwnam($user))[1];
       if($contentpwd) {
    if($contentpwd eq 'x') { # Shadow password file...
       my $pwauth_path = "/usr/local/sbin/pwauth";
       open PWAUTH,  "|$pwauth_path" or
    die "Cannot invoke authentication";
       print PWAUTH "$user\n$password\n";
       close PWAUTH;
       $validated = ! $?;
   
    } else {         # Passwords in /etc/passwd. 
       $validated = (crypt($password,
    $contentpwd) eq $contentpwd);
    }
       } else {
    $validated = 0;
       }
    }
    elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
       if(! ($password =~ /$null/) ) {
    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 {
    $validated = 0; # Password has a match with null.
       }
    }
    elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
       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();
    $credentials->initialize($krbclient);
    my $krbreturn  = &Authen::KRb5::get_in_tkt_with_password($krbclient,
    $krbserver,
    $password,
    $credentials);
    $validated = ($krbreturn == 1);
       }
       else {
    $validated = 0;
       }
    }
    elsif ($howpwd eq "localauth") { 
       #  Authenticate via installation specific authentcation method:
       $validated = &localauth::localauth($user, 
          $password, 
          $contentpwd);
    }
    else { # Unrecognized auth is also bad.
       $validated = 0;
    }
       } else {
    $validated = 0;
       }
       #
       #  $validated has the correct stat of the authentication:
       #
   
       unless ($validated != -3.14159) {
    die "ValidateUser - failed to set the value of validated";
       }
       return $validated;
   }
   
   #
   #    Add a line to the subscription list?
   #
 sub addline {  sub addline {
     my ($fname,$hostid,$ip,$newline)=@_;      my ($fname,$hostid,$ip,$newline)=@_;
     my $contents;      my $contents;
Line 4146  sub addline { Line 4297  sub addline {
     my $expr='^'.$hostid.':'.$ip.':';      my $expr='^'.$hostid.':'.$ip.':';
     $expr =~ s/\./\\\./g;      $expr =~ s/\./\\\./g;
     my $sh;      my $sh;
       Debug("Looking for $expr");
     if ($sh=IO::File->new("$fname.subscription")) {      if ($sh=IO::File->new("$fname.subscription")) {
  while (my $subline=<$sh>) {   while (my $subline=<$sh>) {
     if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}      Debug("addline: line: $subline");
       if ($subline !~ /$expr/) {
    $contents.= $subline;
       } else {
    Debug("Found $subline");
    $found=1;
       }
  }   }
  $sh->close();   $sh->close();
     }      }
     $sh=IO::File->new(">$fname.subscription");      $sh=IO::File->new(">$fname.subscription");
     if ($contents) { print $sh $contents; }      if ($contents) { print $sh $contents; }
     if ($newline) { print $sh $newline; }      if ($newline) { 
    Debug("Appending $newline");
    print $sh $newline; 
       }
     $sh->close();      $sh->close();
     return $found;      return $found;
 }  }
   #
   #    Get chat messages.
   #
 sub getchat {  sub getchat {
     my ($cdom,$cname,$udom,$uname)=@_;      my ($cdom,$cname,$udom,$uname)=@_;
     my %hash;      my %hash;
Line 4183  sub getchat { Line 4346  sub getchat {
     }      }
     return (@participants,@entries);      return (@participants,@entries);
 }  }
   #
   #   Add a chat message
   #
 sub chatadd {  sub chatadd {
     my ($cdom,$cname,$newchat)=@_;      my ($cdom,$cname,$newchat)=@_;
     my %hash;      my %hash;
Line 4223  sub chatadd { Line 4388  sub chatadd {
 sub unsub {  sub unsub {
     my ($fname,$clientip)=@_;      my ($fname,$clientip)=@_;
     my $result;      my $result;
     if (unlink("$fname.$clientname")) {  #    if (unlink("$fname.$clientname")) {
  $result="ok\n";  # $result="ok\n";
     } else {  #    } else {
  $result="not_subscribed\n";  # $result="not_subscribed\n";
     }  #    }
       unlink("$fname.$clientname");
     if (-e "$fname.subscription") {      if (-e "$fname.subscription") {
    Debug ("Processing subscription file $fname.subscription");
  my $found=&addline($fname,$clientname,$clientip,'');   my $found=&addline($fname,$clientname,$clientip,'');
  if ($found) { $result="ok\n"; }   if ($found) { 
       Debug("Old linek found");
       $result="ok\n"; 
    } else {
       $result = "not_subscribed\n";
    }
     } else {      } else {
  if ($result != "ok\n") { $result="not_subscribed\n"; }   Debug("No Subscription file $fname.subscription");
    if ($result ne "ok\n") { $result="not_subscribed\n"; }
     }      }
     return $result;      return $result;
 }  }
Line 4285  sub thisversion { Line 4458  sub thisversion {
   
 sub subscribe {  sub subscribe {
     my ($userinput,$clientip)=@_;      my ($userinput,$clientip)=@_;
       chomp($userinput);
     my $result;      my $result;
     my ($cmd,$fname)=split(/:/,$userinput);      my ($cmd,$fname)=split(/:/,$userinput);
     my $ownership=&ishome($fname);      my $ownership=&ishome($fname);
       Debug("subscribe: Owner = $ownership file: '$fname'");
     if ($ownership eq 'owner') {      if ($ownership eq 'owner') {
 # explitly asking for the current version?  # explitly asking for the current version?
         unless (-e $fname) {          unless (-e $fname) {
       Debug("subscribe - does not exist");
             my $currentversion=&currentversion($fname);              my $currentversion=&currentversion($fname);
     if (&thisversion($fname)==$currentversion) {      if (&thisversion($fname)==$currentversion) {
                 if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {                  if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
Line 4306  sub subscribe { Line 4482  sub subscribe {
             }              }
         }          }
  if (-e $fname) {   if (-e $fname) {
       Debug("subscribe - exists");
     if (-d $fname) {      if (-d $fname) {
  $result="directory\n";   $result="directory\n";
     } else {      } else {
Line 4354  sub make_passwd_file { Line 4531  sub make_passwd_file {
     print $pf "localauth:$npass\n";      print $pf "localauth:$npass\n";
  }   }
     } elsif ($umode eq 'unix') {      } elsif ($umode eq 'unix') {
  {   #
     my $execpath="$perlvar{'lonDaemons'}/"."lcuseradd";   #  Don't allow the creation of privileged accounts!!! that would
     {   #  be real bad!!!
  &Debug("Executing external: ".$execpath);   #
  &Debug("user  = ".$uname.", Password =". $npass);   my $uid = getpwnam($uname);
  my $se = IO::File->new("|$execpath > $perlvar{'lonDaemons'}/logs/lcuseradd.log");   if((defined $uid) && ($uid == 0)) {
  print $se "$uname\n";      &logthis(">>>Attempted add of privileged account blocked<<<");
  print $se "$npass\n";      return "no_priv_account_error\n";
  print $se "$npass\n";   }
     }  
     my $useraddok = $?;   #
     if($useraddok > 0) {   my $execpath="$perlvar{'lonDaemons'}/"."lcuseradd";
  &logthis("Failed lcuseradd: ".&lcuseraddstrerror($useraddok));  
     }   &Debug("Executing external: ".$execpath);
     my $pf = IO::File->new(">$passfilename");   &Debug("user  = ".$uname.", Password =". $npass);
     print $pf "unix:\n";   my $se = IO::File->new("|$execpath > $perlvar{'lonDaemons'}/logs/lcuseradd.log");
    print $se "$uname\n";
    print $se "$npass\n";
    print $se "$npass\n";
   
    my $useraddok = $?;
    if($useraddok > 0) {
       my $lcstring = lcuseraddstrerror($useraddok);
       &logthis("Failed lcuseradd: $lcstring");
       return "error: lcuseradd failed: $lcstring\n";
  }   }
    my $pf = IO::File->new(">$passfilename");
    print $pf "unix:\n";
    
     } elsif ($umode eq 'none') {      } elsif ($umode eq 'none') {
  {   {
     my $pf = IO::File->new(">$passfilename");      my $pf = IO::File->new(">$passfilename");
Line 4384  sub make_passwd_file { Line 4573  sub make_passwd_file {
   
 sub sethost {  sub sethost {
     my ($remotereq) = @_;      my ($remotereq) = @_;
       Debug("sethost got $remotereq");
     my (undef,$hostid)=split(/:/,$remotereq);      my (undef,$hostid)=split(/:/,$remotereq);
     if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }      if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
       Debug("sethost attempting to set host $hostid");
     if ($hostip{$perlvar{'lonHostID'}} eq $hostip{$hostid}) {      if ($hostip{$perlvar{'lonHostID'}} eq $hostip{$hostid}) {
  $currenthostid=$hostid;   $currenthostid=$hostid;
  $currentdomainid=$hostdom{$hostid};   $currentdomainid=$hostdom{$hostid};
Removed from v.1.178.2.5  
changed lines
  Added in v.1.178.2.20

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