Diff for /loncom/lond between versions 1.358 and 1.407

version 1.358, 2007/01/19 03:09:07 version 1.407, 2008/07/07 15:23:41
Line 49  use localenroll; Line 49  use localenroll;
 use localstudentphoto;  use localstudentphoto;
 use File::Copy;  use File::Copy;
 use File::Find;  use File::Find;
 use LONCAPA::ConfigFileEdit;  
 use LONCAPA::lonlocal;  use LONCAPA::lonlocal;
 use LONCAPA::lonssl;  use LONCAPA::lonssl;
 use Fcntl qw(:flock);  use Fcntl qw(:flock);
   use Apache::lonnet;
   
 my $DEBUG = 0;       # Non zero to enable debug log entries.  my $DEBUG = 0;       # Non zero to enable debug log entries.
   
Line 69  my $clientip;   # IP address of client. Line 69  my $clientip;   # IP address of client.
 my $clientname; # LonCAPA name of client.  my $clientname; # LonCAPA name of client.
   
 my $server;  my $server;
 my $thisserver; # DNS of us.  
   
 my $keymode;  my $keymode;
   
Line 85  my $tmpsnum = 0;  # Id of tmpputs. Line 84  my $tmpsnum = 0;  # Id of tmpputs.
   
 my $ConnectionType;  my $ConnectionType;
   
 my %hostid; # ID's for hosts in cluster by ip.  
 my %hostdom; # LonCAPA domain for hosts in cluster.  
 my %hostname; # DNSname -> ID's mapping.  
 my %hostip; # IPs for hosts in cluster.  
 my %hostdns; # ID's of hosts looked up by DNS name.  
   
 my %managers; # Ip -> manager names  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.
Line 142  my @adderrors    = ("ok", Line 135  my @adderrors    = ("ok",
     "lcuseradd Unable to make www member of users's group",      "lcuseradd Unable to make www member of users's group",
     "lcuseradd Unable to su to root",      "lcuseradd Unable to su to root",
     "lcuseradd Unable to set password",      "lcuseradd Unable to set password",
     "lcuseradd Usrname has invalid characters",      "lcuseradd Username has invalid characters",
     "lcuseradd Password has an invalid character",      "lcuseradd Password has an invalid character",
     "lcuseradd User already exists",      "lcuseradd User already exists",
     "lcuseradd Could not add user.",      "lcuseradd Could not add user.",
Line 178  sub ResetStatistics { Line 171  sub ResetStatistics {
 #   $Socket      - Socket open on client.  #   $Socket      - Socket open on client.
 #   $initcmd     - The full text of the init command.  #   $initcmd     - The full text of the init command.
 #  #
 # Implicit inputs:  
 #    $thisserver - Our DNS name.  
 #  
 # Returns:  # Returns:
 #     IDEA session key on success.  #     IDEA session key on success.
 #     undef on failure.  #     undef on failure.
 #  #
 sub LocalConnection {  sub LocalConnection {
     my ($Socket, $initcmd) = @_;      my ($Socket, $initcmd) = @_;
     Debug("Attempting local connection: $initcmd client: $clientip me: $thisserver");      Debug("Attempting local connection: $initcmd client: $clientip");
     if($clientip ne "127.0.0.1") {      if($clientip ne "127.0.0.1") {
  &logthis('<font color="red"> LocalConnection rejecting non local: '   &logthis('<font color="red"> LocalConnection rejecting non local: '
  ."$clientip ne $thisserver </font>");   ."$clientip ne 127.0.0.1 </font>");
  close $Socket;   close $Socket;
  return undef;   return undef;
     }  else {      }  else {
Line 424  sub ReadManagerTable { Line 414  sub ReadManagerTable {
       if ($host =~ "^#") {                  # Comment line.        if ($host =~ "^#") {                  # Comment line.
          next;           next;
       }        }
       if (!defined $hostip{$host}) { # This is a non cluster member        if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member
     #  The entry is of the form:      #  The entry is of the form:
     #    cluname:hostname      #    cluname:hostname
     #  cluname - A 'cluster hostname' is needed in order to negotiate      #  cluname - A 'cluster hostname' is needed in order to negotiate
Line 442  sub ReadManagerTable { Line 432  sub ReadManagerTable {
          }           }
       } else {        } else {
          logthis('<font color="green"> existing host'." $host</font>\n");           logthis('<font color="green"> existing host'." $host</font>\n");
          $managers{$hostip{$host}} = $host;  # Use info from cluster tab if clumemeber           $managers{&Apache::lonnet::get_host_ip($host)} = $host;  # Use info from cluster tab if clumemeber
       }        }
    }     }
 }  }
Line 1006  sub ping_handler { Line 996  sub ping_handler {
     my ($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 1032  sub ping_handler { Line 1022  sub ping_handler {
 sub pong_handler {  sub pong_handler {
     my ($cmd, $tail, $replyfd) = @_;      my ($cmd, $tail, $replyfd) = @_;
   
     my $reply=&reply("ping",$clientname);      my $reply=&Apache::lonnet::reply("ping",$clientname);
     &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail");       &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail"); 
     return 1;      return 1;
 }  }
Line 1076  sub establish_key_handler { Line 1066  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 1113  sub load_handler { Line 1103  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 1142  sub load_handler { Line 1132  sub load_handler {
 sub user_load_handler {  sub user_load_handler {
     my ($cmd, $tail, $replyfd) = @_;      my ($cmd, $tail, $replyfd) = @_;
   
     my $userloadpercent=&userload();      my $userloadpercent=&Apache::lonnet::userload();
     &Reply($replyfd, "$userloadpercent\n", "$cmd:$tail");      &Reply($replyfd, \$userloadpercent, "$cmd:$tail");
           
     return 1;      return 1;
 }  }
Line 1186  sub user_authorization_type { Line 1176  sub user_authorization_type {
  } else {   } else {
             $type .= ':';              $type .= ':';
         }          }
  &Reply( $replyfd, "$type\n", $userinput);   &Reply( $replyfd, \$type, $userinput);
     }      }
       
     return 1;      return 1;
Line 1222  sub push_file_handler { Line 1212  sub push_file_handler {
  # 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 {
  &Failure( $client, "refused\n", $userinput);   &Failure( $client, "refused\n", $userinput);
Line 1231  sub push_file_handler { Line 1221  sub push_file_handler {
 }  }
 &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 1268  sub du_handler { Line 1260  sub du_handler {
  my $code=sub {    my $code=sub { 
     if ($_=~/\.\d+\./) { return;}       if ($_=~/\.\d+\./) { return;} 
     if ($_=~/\.meta$/) { return;}      if ($_=~/\.meta$/) { return;}
       if (-d $_)         { return;}
     $total_size+=(stat($_))[7];      $total_size+=(stat($_))[7];
  };   };
  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 1281  sub du_handler { Line 1274  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 1342  sub ls_handler { Line 1399  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 1411  sub ls2_handler { Line 1469  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 '') {
           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);
   
 #   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 1439  sub reinit_process_handler { Line 1610  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 1523  sub authenticate_handler { Line 1694  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.
           
     my ($udom,$uname,$upass)=split(/:/,$tail);      my ($udom, $uname, $upass, $checkdefauth)=split(/:/,$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);   &Reply( $client, "authorized\n", $userinput);
  #   #
Line 1614  sub change_password_handler { Line 1787  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, $userinput);
  } else {   } else {
     # this just means that the current password mode is not      # this just means that the current password mode is not
     # one we know how to change (e.g the kerberos auth modes or      # one we know how to change (e.g the kerberos auth modes or
Line 1675  sub add_user_handler { Line 1848  sub add_user_handler {
     }      }
     unless ($fperror) {      unless ($fperror) {
  my $result=&make_passwd_file($uname, $umode,$npass, $passfilename);   my $result=&make_passwd_file($uname, $umode,$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 1744  sub change_authentication_handler { Line 1917  sub change_authentication_handler {
  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, $umode,$npass,$passfilename);
Line 1765  sub change_authentication_handler { Line 1938  sub change_authentication_handler {
  &manage_permissions("/$udom/_au", $udom, $uname, "$umode:");   &manage_permissions("/$udom/_au", $udom, $uname, "$umode:");
     }      }
  }   }
  &Reply($client, $result, $userinput);   &Reply($client, \$result, $userinput);
     }      }
                 
   
Line 1849  sub update_resource_handler { Line 2022  sub update_resource_handler {
     my $now=time;      my $now=time;
     my $since=$now-$atime;      my $since=$now-$atime;
     if ($since>$perlvar{'lonExpire'}) {      if ($since>$perlvar{'lonExpire'}) {
  my $reply=&reply("unsub:$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 {
  my $transname="$fname.in.transfer";   my $transname="$fname.in.transfer";
  my $remoteurl=&reply("sub:$fname","$clientname");   my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
  my $response;   my $response;
  alarm(120);   alarm(120);
  {   {
Line 1900  sub devalidate_meta_cache { Line 2073  sub devalidate_meta_cache {
     my ($url) = @_;      my ($url) = @_;
     use Cache::Memcached;      use Cache::Memcached;
     my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});      my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
     $url = &declutter($url);      $url = &Apache::lonnet::declutter($url);
     $url =~ s-\.meta$--;      $url =~ s-\.meta$--;
     my $id = &escape('meta:'.$url);      my $id = &escape('meta:'.$url);
     $memcache->delete($id);      $memcache->delete($id);
 }  }
   
 sub declutter {  
     my $thisfn=shift;  
     $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;  
     $thisfn=~s/^\///;  
     $thisfn=~s|^adm/wrapper/||;  
     $thisfn=~s|^adm/coursedocs/showdoc/||;  
     $thisfn=~s/^res\///;  
     $thisfn=~s/\?.+$//;  
     return $thisfn;  
 }  
 #  #
 #   Fetch a user file from a remote server to the user's home directory  #   Fetch a user file from a remote server to the user's home directory
 #   userfiles subdir.  #   userfiles subdir.
Line 2114  sub rename_user_file_handler { Line 2277  sub rename_user_file_handler {
 &register_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);  &register_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
   
 #  #
   #  Checks if the specified user has an active session on the server
   #  return ok if so, not_found if not
   #
   # Parameters:
   #   cmd      - The request keyword that dispatched to tus.
   #   tail     - The tail of the request (colon separated parameters).
   #   client   - Filehandle open on the client.
   # Return:
   #    1.
   sub user_has_session_handler {
       my ($cmd, $tail, $client) = @_;
   
       my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
       
       &logthis("Looking for $udom $uname");
       opendir(DIR,$perlvar{'lonIDsDir'});
       my $filename;
       while ($filename=readdir(DIR)) {
    last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
       }
       if ($filename) {
    &Reply($client, "ok\n", "$cmd:$tail");
       } else {
    &Failure($client, "not_found\n", "$cmd:$tail");
       }
       return 1;
   
   }
   &register_handler("userhassession", \&user_has_session_handler, 0,1,0);
   
   #
 #  Authenticate access to a user file by checking that the token the user's   #  Authenticate access to a user file by checking that the token the user's 
 #  passed also exists in their session file  #  passed also exists in their session file
 #  #
Line 2129  sub token_auth_user_file_handler { Line 2323  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 2206  sub subscribe_handler { Line 2400  sub subscribe_handler {
 &register_handler("sub", \&subscribe_handler, 0, 1, 0);  &register_handler("sub", \&subscribe_handler, 0, 1, 0);
   
 #  #
 #   Determine the version of a resource (?) Or is it return  #   Determine the latest version of a resource (it looks for the highest
 #   the top version of the resource?  Not yet clear from the  #   past version and then returns that +1)
 #   code in currentversion.  
 #  #
 # 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).
   #                 (Should consist of an absolute path to a file)
 #    $client   - File descriptor connected to client.  #    $client   - File descriptor connected to client.
 # Returns  # Returns
 #     0        - Requested to exit, caller should shut down.  #     0        - Requested to exit, caller should shut down.
Line 2570  sub get_profile_entry { Line 2764  sub get_profile_entry {
     my ($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", $userinput);
     }      }
Line 2713  sub get_profile_keys { Line 2908  sub get_profile_keys {
  }   }
  if (&untie_user_hash($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", $userinput);
Line 2783  sub dump_profile_database { Line 2978  sub dump_profile_database {
  }   }
     }      }
     chop($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", $userinput);
Line 2866  sub dump_with_regexp { Line 3061  sub dump_with_regexp {
  }   }
  if (&untie_user_hash($hashref)) {   if (&untie_user_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 dump\n", $userinput);       "while attempting dump\n", $userinput);
Line 3074  sub restore_handler { Line 3269  sub restore_handler {
  }   }
  if (&untie_user_hash($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 3155  sub retrieve_chat_handler { Line 3350  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 3292  sub put_course_id_handler { Line 3487  sub put_course_id_handler {
  foreach my $pair (@pairs) {   foreach my $pair (@pairs) {
             my ($key,$courseinfo) = split(/=/,$pair,2);              my ($key,$courseinfo) = split(/=/,$pair,2);
             $courseinfo =~ s/=/:/g;              $courseinfo =~ s/=/:/g;
               if (defined($hashref->{$key})) {
                   my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
                   if (ref($value) eq 'HASH') {
                       my @items = ('description','inst_code','owner','type');
                       my @new_items = split(/:/,$courseinfo,-1);
                       my %storehash; 
                       for (my $i=0; $i<@new_items; $i++) {
                           $storehash{$items[$i]} = &unescape($new_items[$i]);
                       }
                       $hashref->{$key} = 
                           &Apache::lonnet::freeze_escape(\%storehash);
                       my $unesc_key = &unescape($key);
                       $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
                       next;
                   }
               }
             my @current_items = split(/:/,$hashref->{$key},-1);              my @current_items = split(/:/,$hashref->{$key},-1);
             shift(@current_items); # remove description              shift(@current_items); # remove description
             pop(@current_items);   # remove last access              pop(@current_items);   # remove last access
Line 3308  sub put_course_id_handler { Line 3519  sub put_course_id_handler {
                     }                      }
                 }                  }
             }              }
     $hashref->{$key}=$courseinfo.':'.$now;              $hashref->{$key}=$courseinfo.':'.$now;
  }   }
  if (&untie_domain_hash($hashref)) {   if (&untie_domain_hash($hashref)) {
     &Reply( $client, "ok\n", $userinput);      &Reply( $client, "ok\n", $userinput);
Line 3322  sub put_course_id_handler { Line 3533  sub put_course_id_handler {
  ." tie(GDBM) Failed ".   ." tie(GDBM) Failed ".
  "while attempting courseidput\n", $userinput);   "while attempting courseidput\n", $userinput);
     }      }
       
   
     return 1;      return 1;
 }  }
 &register_handler("courseidput", \&put_course_id_handler, 0, 1, 0);  &register_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
   
   sub put_course_id_hash_handler {
       my ($cmd, $tail, $client) = @_;
       my $userinput = "$cmd:$tail";
       my ($udom,$mode,$what) = split(/:/, $tail,3);
       chomp($what);
       my $now=time;
       my @pairs=split(/\&/,$what);
       my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
       if ($hashref) {
           foreach my $pair (@pairs) {
               my ($key,$value)=split(/=/,$pair);
               my $unesc_key = &unescape($key);
               if ($mode ne 'timeonly') {
                   if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
                       my $curritems = &Apache::lonnet::thaw_unescape($key); 
                       if (ref($curritems) ne 'HASH') {
                           my @current_items = split(/:/,$hashref->{$key},-1);
                           my $lasttime = pop(@current_items);
                           $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
                       } else {
                           $hashref->{&escape('lasttime:'.$unesc_key)} = '';
                       }
                   } 
                   $hashref->{$key} = $value;
               }
               if ($mode ne 'notime') {
                   $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
               }
           }
           if (&untie_domain_hash($hashref)) {
               &Reply($client, "ok\n", $userinput);
           } else {
               &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
                        "while attempting courseidputhash\n", $userinput);
           }
       } else {
           &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
                     "while attempting courseidputhash\n", $userinput);
       }
       return 1;
   }
   &register_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
   
 #  Retrieves the value of a course id resource keyword pattern  #  Retrieves the value of a course id resource keyword pattern
 #  defined since a starting date.  Both the starting date and the  #  defined since a starting date.  Both the starting date and the
 #  keyword pattern are optional.  If the starting date is not supplied it  #  keyword pattern are optional.  If the starting date is not supplied it
Line 3354  sub put_course_id_handler { Line 3607  sub put_course_id_handler {
 #                            owner matches the supplied username and/or domain  #                            owner matches the supplied username and/or domain
 #                            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 
   #                 regexp_ok - if true, allow the supplied institutional code
   #                            filter to behave as a regular expression.  
   #                 rtn_as_hash - whether to return the information available for
   #                            each matched item as a frozen hash of all 
   #                            key, value pairs in the item's hash, or as a 
   #                            colon-separated list of (in order) description,
   #                            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".
   #
 #     $client  - The socket open on the client.  #     $client  - The socket open on the client.
 # Returns:  # Returns:
 #    1     - Continue processing.  #    1     - Continue processing.
Line 3361  sub put_course_id_handler { Line 3633  sub put_course_id_handler {
 #   a reply is written to $client.  #   a reply is written to $client.
 sub dump_course_id_handler {  sub dump_course_id_handler {
     my ($cmd, $tail, $client) = @_;      my ($cmd, $tail, $client) = @_;
   
     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) =split(/:/,$tail);          $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
           $caller) =split(/:/,$tail);
       my $now = time;
     if (defined($description)) {      if (defined($description)) {
  $description=&unescape($description);   $description=&unescape($description);
     } else {      } else {
Line 3405  sub dump_course_id_handler { Line 3678  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($catfilter)) {
     unless (defined($since)) { $since=0; }          $catfilter=&unescape($catfilter);
       }
       my $unpack = 1;
       if ($description eq '.' && $instcodefilter eq '.' && $coursefilter eq '.' && 
           $typefilter eq '.') {
           $unpack = 0;
       }
       if (!defined($since)) { $since=0; }
     my $qresult='';      my $qresult='';
     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 ($descr,$lasttime,$inst_code,$owner,$type);              my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
             my @courseitems = split(/:/,$value);                  %unesc_val,$selfenroll_end,$selfenroll_types);
             $lasttime = pop(@courseitems);              $unesc_key = &unescape($key);
     ($descr,$inst_code,$owner,$type)=@courseitems;              if ($unesc_key =~ /^lasttime:/) {
     if ($lasttime<$since) { next; }                  next;
               } else {
                   $lasttime_key = &escape('lasttime:'.$unesc_key);
               }
               if ($hashref->{$lasttime_key} ne '') {
                   $lasttime = $hashref->{$lasttime_key};
                   next if ($lasttime<$since);
               }
               my $items = &Apache::lonnet::thaw_unescape($value);
               if (ref($items) eq 'HASH') {
                   $is_hash =  1;
                   if ($unpack || !$rtn_as_hash) {
                       $unesc_val{'descr'} = $items->{'description'};
                       $unesc_val{'inst_code'} = $items->{'inst_code'};
                       $unesc_val{'owner'} = $items->{'owner'};
                       $unesc_val{'type'} = $items->{'type'};
                   }
                   $selfenroll_types = $items->{'selfenroll_types'};
                   $selfenroll_end = $items->{'selfenroll_end_date'};
                   if ($selfenrollonly) {
                       next if (!$selfenroll_types);
                       if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
                           next;
                       }
                   }
                   if ($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 !$showhidden;
                       }
                   }
               } else {
                   next if ($catfilter ne '');
                   next if ($selfenrollonly); 
                   $is_hash =  0;
                   my @courseitems = split(/:/,$value);
                   $lasttime = pop(@courseitems);
                   if ($hashref->{$lasttime_key} eq '') {
                       next if ($lasttime<$since);
                   }
           ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
               }
             my $match = 1;              my $match = 1;
     unless ($description eq '.') {      if ($description ne '.') {
  my $unescapeDescr = &unescape($descr);                  if (!$is_hash) {
  unless (eval('$unescapeDescr=~/\Q$description\E/i')) {                      $unesc_val{'descr'} = &unescape($val{'descr'});
                   }
                   if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
                     $match = 0;                      $match = 0;
  }                  }
             }              }
             unless ($instcodefilter eq '.' || !defined($instcodefilter)) {              if ($instcodefilter ne '.') {
                 my $unescapeInstcode = &unescape($inst_code);                  if (!$is_hash) {
                       $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
                   }
                 if ($regexp_ok) {                  if ($regexp_ok) {
                     unless (eval('$unescapeInstcode=~/$instcodefilter/')) {                      if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
                         $match = 0;                          $match = 0;
                     }                      }
                 } else {                  } else {
                     unless (eval('$unescapeInstcode=~/\Q$instcodefilter\E/i')) {                      if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
                         $match = 0;                          $match = 0;
                     }                      }
                 }                  }
     }      }
             unless ($ownerfilter eq '.' || !defined($ownerfilter)) {              if ($ownerfilter ne '.') {
                 my $unescapeOwner = &unescape($owner);                  if (!$is_hash) {
                       $unesc_val{'owner'} = &unescape($val{'owner'});
                   }
                 if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {                  if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
                     if ($unescapeOwner =~ /:/) {                      if ($unesc_val{'owner'} =~ /:/) {
                         if (eval('$unescapeOwner !~                           if (eval{$unesc_val{'owner'} !~ 
                              /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i')) {                               /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
                             $match = 0;                              $match = 0;
                         }                           } 
                     } else {                      } else {
                         if (eval('$unescapeOwner!~/\Q$ownerunamefilter\E/i')) {                          if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
                             $match = 0;                              $match = 0;
                         }                          }
                     }                      }
                 } elsif ($ownerunamefilter ne '') {                  } elsif ($ownerunamefilter ne '') {
                     if ($unescapeOwner =~ /:/) {                      if ($unesc_val{'owner'} =~ /:/) {
                         if (eval('$unescapeOwner!~/\Q$ownerunamefilter\E:[^:]+$/i')) {                          if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
                              $match = 0;                               $match = 0;
                         }                          }
                     } else {                      } else {
                         if (eval('$unescapeOwner!~/\Q$ownerunamefilter\E/i')) {                          if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
                             $match = 0;                              $match = 0;
                         }                          }
                     }                      }
                 } elsif ($ownerdomfilter ne '') {                  } elsif ($ownerdomfilter ne '') {
                     if ($unescapeOwner =~ /:/) {                      if ($unesc_val{'owner'} =~ /:/) {
                         if (eval('$unescapeOwner!~/^[^:]+:\Q$ownerdomfilter\E/')) {                          if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
                              $match = 0;                               $match = 0;
                         }                          }
                     } else {                      } else {
Line 3470  sub dump_course_id_handler { Line 3810  sub dump_course_id_handler {
                     }                      }
                 }                  }
             }              }
             unless ($coursefilter eq '.' || !defined($coursefilter)) {              if ($coursefilter ne '.') {
                 my $unescapeCourse = &unescape($key);                  if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
                 unless (eval('$unescapeCourse=~/^$udom(_)\Q$coursefilter\E$/')) {  
                     $match = 0;                      $match = 0;
                 }                  }
             }              }
             unless ($typefilter eq '.' || !defined($typefilter)) {              if ($typefilter ne '.') {
                 my $unescapeType = &unescape($type);                  if (!$is_hash) {
                 if ($type eq '') {                      $unesc_val{'type'} = &unescape($val{'type'});
                   }
                   if ($unesc_val{'type'} eq '') {
                     if ($typefilter ne 'Course') {                      if ($typefilter ne 'Course') {
                         $match = 0;                          $match = 0;
                     }                      }
                 } else {                   } else {
                     unless (eval('$unescapeType=~/^\Q$typefilter\E$/')) {                      if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
                         $match = 0;                          $match = 0;
                     }                      }
                 }                  }
             }              }
             if ($match == 1) {              if ($match == 1) {
                 $qresult.=$key.'='.$descr.':'.$inst_code.':'.$owner.'&';                  if ($rtn_as_hash) {
                       if ($is_hash) {
                           $qresult.=$key.'='.$value.'&';
                       } else {
                           my %rtnhash = ( 'description' => &unescape($val{'descr'}),
                                           'inst_code' => &unescape($val{'inst_code'}),
                                           'owner'     => &unescape($val{'owner'}),
                                           'type'      => &unescape($val{'type'}),
                                         );
                           my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
                           $qresult.=$key.'='.$items.'&';
                       }
                   } else {
                       if ($is_hash) {
                           $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
                                       &escape($unesc_val{'inst_code'}).':'.
                                       &escape($unesc_val{'owner'}).'&';
                       } else {
                           $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
                                       ':'.$val{'owner'}.'&';
                       }
                   }
             }              }
  }   }
  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", $userinput);
Line 3503  sub dump_course_id_handler { Line 3865  sub dump_course_id_handler {
  &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".   &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
  "while attempting courseiddump\n", $userinput);   "while attempting courseiddump\n", $userinput);
     }      }
   
   
     return 1;      return 1;
 }  }
 &register_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);  &register_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
Line 3587  sub get_domain_handler { Line 3947  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 3599  sub get_domain_handler { Line 3959  sub get_domain_handler {
   
     return 1;      return 1;
 }  }
 &register_handler("getdom", \&get_id_handler, 0, 1, 0);  &register_handler("getdom", \&get_domain_handler, 0, 1, 0);
   
   
 #  #
Line 3685  sub get_id_handler { Line 4045  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 3809  sub dump_dcmail_handler { Line 4169  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", $userinput);
Line 3927  sub dump_domainroles_handler { Line 4287  sub dump_domainroles_handler {
                 }                  }
             }              }
             unless (@roles < 1) {              unless (@roles < 1) {
                 unless (grep/^$trole$/,@roles) {                  unless (grep/^\Q$trole\E$/,@roles) {
                     $match = 0;                      $match = 0;
                 }                  }
             }              }
Line 3937  sub dump_domainroles_handler { Line 4297  sub dump_domainroles_handler {
         }          }
         if (&untie_domain_hash($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", $userinput);
Line 3991  sub tmp_put_handler { Line 4351  sub tmp_put_handler {
     if ($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 4025  sub tmp_get_handler { Line 4385  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 4209  sub enrollment_enabled_handler { Line 4569  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;
 }  }
Line 4236  sub get_sections_handler { Line 4596  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 4265  sub validate_course_owner_handler { Line 4625  sub validate_course_owner_handler {
   
     $owner = &unescape($owner);      $owner = &unescape($owner);
     my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom);      my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom);
     &Reply($client, "$outcome\n", $userinput);      &Reply($client, \$outcome, $userinput);
   
   
   
Line 4296  sub validate_course_section_handler { Line 4656  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 4323  sub validate_course_section_handler { Line 4683  sub validate_course_section_handler {
 sub validate_class_access_handler {  sub validate_class_access_handler {
     my ($cmd, $tail, $client) = @_;      my ($cmd, $tail, $client) = @_;
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
     my ($inst_class,$courseowner,$cdom) = split(/:/, $tail);      my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
     $courseowner = &unescape($courseowner);      my $owners = &unescape($ownerlist);
     my $outcome;      my $outcome;
     eval {      eval {
  local($SIG{__DIE__})='DEFAULT';   local($SIG{__DIE__})='DEFAULT';
  $outcome=&localenroll::check_section($inst_class,$courseowner,$cdom);   $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
     };      };
     &Reply($client,"$outcome\n", $userinput);      &Reply($client,\$outcome, $userinput);
   
     return 1;      return 1;
 }  }
Line 4451  sub get_institutional_code_format_handle Line 4811  sub get_institutional_code_format_handle
     \%cat_titles,      \%cat_titles,
     \%cat_order);      \%cat_order);
     if ($formatreply eq 'ok') {      if ($formatreply eq 'ok') {
  my $codes_str = &hash2str(%codes);   my $codes_str = &Apache::lonnet::hash2str(%codes);
  my $codetitles_str = &array2str(@codetitles);   my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
  my $cat_titles_str = &hash2str(%cat_titles);   my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
  my $cat_order_str = &hash2str(%cat_order);   my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
  &Reply($client,   &Reply($client,
        $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'         $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
        .$cat_order_str."\n",         .$cat_order_str."\n",
Line 4491  sub get_institutional_defaults_handler { Line 4851  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 4502  sub get_institutional_defaults_handler { Line 4862  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_institutional_user_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';
           $outcome = &localenroll::username_rules($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("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 {
       my ($cmd, $tail, $client)   = @_;
       my $userinput               = "$cmd:$tail";
       my %rulecheck;
       my $outcome;
       my ($udom,$uname,@rules) = split(/:/,$tail);
       $udom = &unescape($udom);
       $uname = &unescape($uname);
       @rules = map {&unescape($_);} (@rules);
       eval {
           local($SIG{__DIE__})='DEFAULT';
           $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
       };
       if (!$@) {
           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("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 4630  sub student_photo_handler { Line 5179  sub student_photo_handler {
 }  }
 &register_handler("studentphoto", \&student_photo_handler, 0, 1, 0);  &register_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
   
   sub inst_usertypes_handler {
       my ($cmd, $domain, $client) = @_;
       my $res;
       my $userinput = $cmd.":".$domain; # For logging purposes.
       my (%typeshash,@order,$result);
       eval {
    local($SIG{__DIE__})='DEFAULT';
    $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
       };
       if ($result eq 'ok') {
           if (keys(%typeshash) > 0) {
               foreach my $key (keys(%typeshash)) {
                   $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
               }
           }
           $res=~s/\&$//;
           $res .= ':';
           if (@order > 0) {
               foreach my $item (@order) {
                   $res .= &escape($item).'&';
               }
           }
           $res=~s/\&$//;
       }
       &Reply($client, \$res, $userinput);
       return 1;
   }
   &register_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
   
 # mkpath makes all directories for a file, expects an absolute path with a  # mkpath makes all directories for a file, expects an absolute path with a
 # file or a trailing / if just a dir is passed  # file or a trailing / if just a dir is passed
 # returns 1 on success 0 on failure  # returns 1 on success 0 on failure
Line 4893  sub catchexception { Line 5471  sub catchexception {
     $SIG{__DIE__}='DEFAULT';      $SIG{__DIE__}='DEFAULT';
     &status("Catching exception");      &status("Catching exception");
     &logthis("<font color='red'>CRITICAL: "      &logthis("<font color='red'>CRITICAL: "
      ."ABNORMAL EXIT. Child $$ for server $thisserver died through "       ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
      ."a crash with this error msg->[$error]</font>");       ."a crash with this error msg->[$error]</font>");
     &logthis('Famous last words: '.$status.' - '.$lastlog);      &logthis('Famous last words: '.$status.' - '.$lastlog);
     if ($client) { print $client "error: $error\n"; }      if ($client) { print $client "error: $error\n"; }
Line 5004  sub HUPSMAN {                      # sig Line 5582  sub HUPSMAN {                      # sig
 }  }
   
 #  #
 #    Kill off hashes that describe the host table prior to re-reading it.  
 #    Hashes affected are:  
 #       %hostid, %hostdom %hostip %hostdns.  
 #  
 sub KillHostHashes {  
     foreach my $key (keys %hostid) {  
  delete $hostid{$key};  
     }  
     foreach my $key (keys %hostdom) {  
  delete $hostdom{$key};  
     }  
     foreach my $key (keys %hostip) {  
  delete $hostip{$key};  
     }  
     foreach my $key (keys %hostdns) {  
  delete $hostdns{$key};  
     }  
 }  
 #  
 #   Read in the host table from file and distribute it into the various hashes:  
 #  
 #    - %hostid  -  Indexed by IP, the loncapa hostname.  
 #    - %hostdom -  Indexed by  loncapa hostname, the domain.  
 #    - %hostip  -  Indexed by hostid, the Ip address of the host.  
 sub ReadHostTable {  
   
     open (CONFIG,"$perlvar{'lonTabDir'}/hosts.tab") || die "Can't read host file";  
     my $myloncapaname = $perlvar{'lonHostID'};  
     Debug("My loncapa name is : $myloncapaname");  
     my %name_to_ip;  
     while (my $configline=<CONFIG>) {  
  if ($configline !~ /^\s*\#/ && $configline !~ /^\s*$/ ) {  
     my ($id,$domain,$role,$name)=split(/:/,$configline);  
     $name=~s/\s//g;  
     my $ip;  
     if (!exists($name_to_ip{$name})) {  
  $ip = gethostbyname($name);  
  if (!$ip || length($ip) ne 4) {  
     &logthis("Skipping host $id name $name no IP found\n");  
     next;  
  }  
  $ip=inet_ntoa($ip);  
  $name_to_ip{$name} = $ip;  
     } else {  
  $ip = $name_to_ip{$name};  
     }  
     $hostid{$ip}=$id;         # LonCAPA name of host by IP.  
     $hostdom{$id}=$domain;    # LonCAPA domain name of host.   
     $hostname{$id}=$name;     # LonCAPA name -> DNS name  
     $hostip{$id}=$ip;         # IP address of host.  
     $hostdns{$name} = $id;    # LonCAPA name of host by DNS.  
   
     if ($id eq $perlvar{'lonHostID'}) {   
  Debug("Found me in the host table: $name");  
  $thisserver=$name;   
     }  
  }  
     }  
     close(CONFIG);  
 }  
 #  
 #  Reload the Apache daemon's state.  #  Reload the Apache daemon's state.
 #  This is done by invoking /home/httpd/perl/apachereload  #  This is done by invoking /home/httpd/perl/apachereload
 #  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.
Line 5095  sub UpdateHosts { Line 5612  sub UpdateHosts {
     #  either dropped or changed hosts.  Note that the re-read of the table      #  either dropped or changed hosts.  Note that the re-read of the table
     #  will take care of new and changed hosts as connections come into being.      #  will take care of new and changed hosts as connections come into being.
   
       &Apache::lonnet::reset_hosts_info();
   
     KillHostHashes;      foreach my $child (keys(%children)) {
     ReadHostTable;  
   
     foreach my $child (keys %children) {  
  my $childip = $children{$child};   my $childip = $children{$child};
  if(!$hostid{$childip}) {   if ($childip ne '127.0.0.1'
       && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
     logthis('<font color="blue"> UpdateHosts killing child '      logthis('<font color="blue"> UpdateHosts killing child '
     ." $child for ip $childip </font>");      ." $child for ip $childip </font>");
     kill('INT', $child);      kill('INT', $child);
Line 5186  sub Debug { Line 5702  sub Debug {
 #  #
 sub Reply {  sub Reply {
     my ($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 5261  sub status { Line 5782  sub status {
     $0='lond: '.$what.' '.$local;      $0='lond: '.$what.' '.$local;
 }  }
   
 # ----------------------------------------------------------- Send USR1 to lonc  
   
 sub reconlonc {  
     my $peerfile=shift;  
     &logthis("Trying to reconnect for $peerfile");  
     my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";  
     if (my $fh=IO::File->new("$loncfile")) {  
  my $loncpid=<$fh>;  
         chomp($loncpid);  
         if (kill 0 => $loncpid) {  
     &logthis("lonc at pid $loncpid responding, sending USR1");  
             kill USR1 => $loncpid;  
         } else {  
     &logthis(  
               "<font color='red'>CRITICAL: "  
              ."lonc at pid $loncpid not responding, giving up</font>");  
         }  
     } else {  
       &logthis('<font color="red">CRITICAL: lonc not running, giving up</font>');  
     }  
 }  
   
 # -------------------------------------------------- Non-critical communication  
   
 sub subreply {  
     my ($cmd,$server)=@_;  
     my $peerfile="$perlvar{'lonSockDir'}/".$hostname{$server};  
     my $sclient=IO::Socket::UNIX->new(Peer    =>"$peerfile",  
                                       Type    => SOCK_STREAM,  
                                       Timeout => 10)  
        or return "con_lost";  
     print $sclient "sethost:$server:$cmd\n";  
     my $answer=<$sclient>;  
     chomp($answer);  
     if (!$answer) { $answer="con_lost"; }  
     return $answer;  
 }  
   
 sub reply {  
   my ($cmd,$server)=@_;  
   my $answer;  
   if ($server ne $currenthostid) {   
     $answer=subreply($cmd,$server);  
     if ($answer eq 'con_lost') {  
  $answer=subreply("ping",$server);  
         if ($answer ne $server) {  
     &logthis("sub reply: answer != server answer is $answer, server is $server");  
            &reconlonc("$perlvar{'lonSockDir'}/".$hostname{$server});  
         }  
         $answer=subreply($cmd,$server);  
     }  
   } else {  
     $answer='self_reply';  
   }   
   return $answer;  
 }  
   
 # -------------------------------------------------------------- Talk to lonsql  # -------------------------------------------------------------- Talk to lonsql
   
 sub sql_reply {  sub sql_reply {
Line 5386  $SIG{USR1} = \&checkchildren; Line 5850  $SIG{USR1} = \&checkchildren;
 $SIG{USR2} = \&UpdateHosts;  $SIG{USR2} = \&UpdateHosts;
   
 #  Read the host hashes:  #  Read the host hashes:
   &Apache::lonnet::load_hosts_tab();
 ReadHostTable;  
   
 my $dist=`$perlvar{'lonDaemons'}/distprobe`;  my $dist=`$perlvar{'lonDaemons'}/distprobe`;
   
Line 5466  sub make_new_child { Line 5929  sub make_new_child {
 #        my $tmpsnum=0;            # Now global  #        my $tmpsnum=0;            # Now global
 #---------------------------------------------------- kerberos 5 initialization  #---------------------------------------------------- kerberos 5 initialization
         &Authen::Krb5::init_context();          &Authen::Krb5::init_context();
  unless (($dist eq 'fedora5') || ($dist eq 'fedora4')    unless (($dist eq 'fedora5') || ($dist eq 'fedora4') ||  
  || ($dist eq 'suse9.3')) {   ($dist eq 'fedora6') || ($dist eq 'suse9.3')) {
     &Authen::Krb5::init_ets();      &Authen::Krb5::init_ets();
  }   }
   
Line 5477  sub make_new_child { Line 5940  sub make_new_child {
 # -----------------------------------------------------------------------------  # -----------------------------------------------------------------------------
  # see if we know client and 'check' for spoof IP by ineffective challenge   # see if we know client and 'check' for spoof IP by ineffective challenge
   
  ReadManagerTable; # May also be a manager!!  
   
  my $outsideip=$clientip;   my $outsideip=$clientip;
  if ($clientip eq '127.0.0.1') {   if ($clientip eq '127.0.0.1') {
     $outsideip=$hostip{$perlvar{'lonHostID'}};      $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
  }   }
   
  my $clientrec=($hostid{$outsideip}     ne undef);   my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
  my $ismanager=($managers{$outsideip}    ne undef);   my $ismanager=($managers{$outsideip}    ne undef);
  $clientname  = "[unknonwn]";   $clientname  = "[unknonwn]";
  if($clientrec) { # Establish client type.   if($clientrec) { # Establish client type.
     $ConnectionType = "client";      $ConnectionType = "client";
     $clientname = $hostid{$outsideip};      $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
     if($ismanager) {      if($ismanager) {
  $ConnectionType = "both";   $ConnectionType = "both";
     }      }
Line 5596  sub make_new_child { Line 6057  sub make_new_child {
     
  if ($clientok) {   if ($clientok) {
 # ---------------- New known client connecting, could mean machine online again  # ---------------- New known client connecting, could mean machine online again
           if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip 
     foreach my $id (keys(%hostip)) {   && $clientip ne '127.0.0.1') {
  if ($hostip{$id} ne $clientip ||   &Apache::lonnet::reconlonc($clientname);
     $hostip{$currenthostid} eq $clientip) {  
     # no need to try to do recon's to myself  
     next;  
  }  
  &reconlonc("$perlvar{'lonSockDir'}/".$hostname{$id});  
     }      }
     &logthis("<font color='green'>Established connection: $clientname</font>");      &logthis("<font color='green'>Established connection: $clientname</font>");
     &status('Will listen to '.$clientname);      &status('Will listen to '.$clientname);
Line 5806  sub get_auth_type Line 6262  sub get_auth_type
 #     0        - The domain,user,password triplet is not a valid user.  #     0        - The domain,user,password triplet is not a valid user.
 #  #
 sub validate_user {  sub validate_user {
     my ($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 5830  sub validate_user { Line 6285  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 5880  sub validate_user { Line 6348  sub validate_user {
  my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;   my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
  my $krbserver  = &Authen::Krb5::parse_name($krbservice);   my $krbserver  = &Authen::Krb5::parse_name($krbservice);
  my $credentials= &Authen::Krb5::cc_default();   my $credentials= &Authen::Krb5::cc_default();
  $credentials->initialize($krbclient);   $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
  my $krbreturn  = &Authen::Krb5::get_in_tkt_with_password($krbclient,                                                                   .$contentpwd));
  $krbserver,                  my $krbreturn;
  $password,                  if (exists(&Authen::Krb5::get_init_creds_password)) {
  $credentials);                      $krbreturn = 
  $validated = ($krbreturn == 1);                          &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());
    }
     } else {      } else {
  $validated = 0;   $validated = 0;
     }      }
Line 6131  sub subscribe { Line 6611  sub subscribe {
                 # the metadata                  # the metadata
  unless ($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/;
  $fname="http://$thisserver/".$fname;   $fname="http://".&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
  $result="$fname\n";   $result="$fname\n";
     }      }
  } else {   } else {
Line 6174  sub change_unix_password { Line 6654  sub change_unix_password {
   
 sub make_passwd_file {  sub make_passwd_file {
     my ($uname, $umode,$npass,$passfilename)=@_;      my ($uname, $umode,$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 6242  sub make_passwd_file { Line 6722  sub make_passwd_file {
  if($useraddok > 0) {   if($useraddok > 0) {
     my $error_text = &lcuseraddstrerror($useraddok);      my $error_text = &lcuseraddstrerror($useraddok);
     &logthis("Failed lcuseradd: $error_text");      &logthis("Failed lcuseradd: $error_text");
     $result = "lcuseradd_failed:$error_text\n";      $result = "lcuseradd_failed:$error_text";
  }  else {   }  else {
     my $pf = IO::File->new(">$passfilename");      my $pf = IO::File->new(">$passfilename");
     if($pf) {      if($pf) {
Line 6266  sub make_passwd_file { Line 6746  sub make_passwd_file {
     }      }
  }   }
     } else {      } else {
  $result="auth_mode_error\n";   $result="auth_mode_error";
     }      }
     return $result;      return $result;
 }  }
Line 6285  sub sethost { Line 6765  sub sethost {
     }      }
   
     if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }      if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
     if ($hostip{$perlvar{'lonHostID'}} eq $hostip{$hostid}) {      if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'}) 
    eq &Apache::lonnet::get_host_ip($hostid)) {
  $currenthostid  =$hostid;   $currenthostid  =$hostid;
  $currentdomainid=$hostdom{$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 $hostid not an alias of ".
Line 6303  sub version { Line 6784  sub version {
     return "version:$VERSION";      return "version:$VERSION";
 }  }
   
 #There is a copy of this in lonnet.pm  
 sub userload {  
     my $numusers=0;  
     {  
  opendir(LONIDS,$perlvar{'lonIDsDir'});  
  my $filename;  
  my $curtime=time;  
  while ($filename=readdir(LONIDS)) {  
     if ($filename eq '.' || $filename eq '..') {next;}  
     my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];  
     if ($curtime-$mtime < 1800) { $numusers++; }  
  }  
  closedir(LONIDS);  
     }  
     my $userloadpercent=0;  
     my $maxuserload=$perlvar{'lonUserLoadLim'};  
     if ($maxuserload) {  
  $userloadpercent=100*$numusers/$maxuserload;  
     }  
     $userloadpercent=sprintf("%.2f",$userloadpercent);  
     return $userloadpercent;  
 }  
   
 # Routines for serializing arrays and hashes (copies from lonnet)  
   
 sub array2str {  
   my (@array) = @_;  
   my $result=&arrayref2str(\@array);  
   $result=~s/^__ARRAY_REF__//;  
   $result=~s/__END_ARRAY_REF__$//;  
   return $result;  
 }  
                                                                                    
 sub arrayref2str {  
   my ($arrayref) = @_;  
   my $result='__ARRAY_REF__';  
   foreach my $elem (@$arrayref) {  
     if(ref($elem) eq 'ARRAY') {  
       $result.=&arrayref2str($elem).'&';  
     } elsif(ref($elem) eq 'HASH') {  
       $result.=&hashref2str($elem).'&';  
     } elsif(ref($elem)) {  
       #print("Got a ref of ".(ref($elem))." skipping.");  
     } else {  
       $result.=&escape($elem).'&';  
     }  
   }  
   $result=~s/\&$//;  
   $result .= '__END_ARRAY_REF__';  
   return $result;  
 }  
                                                                                    
 sub hash2str {  
   my (%hash) = @_;  
   my $result=&hashref2str(\%hash);  
   $result=~s/^__HASH_REF__//;  
   $result=~s/__END_HASH_REF__$//;  
   return $result;  
 }  
                                                                                    
 sub hashref2str {  
   my ($hashref)=@_;  
   my $result='__HASH_REF__';  
   foreach (sort(keys(%$hashref))) {  
     if (ref($_) eq 'ARRAY') {  
       $result.=&arrayref2str($_).'=';  
     } elsif (ref($_) eq 'HASH') {  
       $result.=&hashref2str($_).'=';  
     } elsif (ref($_)) {  
       $result.='=';  
       #print("Got a ref of ".(ref($_))." skipping.");  
     } else {  
         if ($_) {$result.=&escape($_).'=';} else { last; }  
     }  
   
     if(ref($hashref->{$_}) eq 'ARRAY') {  
       $result.=&arrayref2str($hashref->{$_}).'&';  
     } elsif(ref($hashref->{$_}) eq 'HASH') {  
       $result.=&hashref2str($hashref->{$_}).'&';  
     } elsif(ref($hashref->{$_})) {  
        $result.='&';  
       #print("Got a ref of ".(ref($hashref->{$_}))." skipping.");  
     } else {  
       $result.=&escape($hashref->{$_}).'&';  
     }  
   }  
   $result=~s/\&$//;  
   $result .= '__END_HASH_REF__';  
   return $result;  
 }  
   
 # ----------------------------------- POD (plain old documentation, CPAN style)  # ----------------------------------- POD (plain old documentation, CPAN style)
   

Removed from v.1.358  
changed lines
  Added in v.1.407


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