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Diff for /loncom/lond between versions 1.147 and 1.154

version 1.147, 2003/09/23 11:23:31 version 1.154, 2003/10/08 20:29:46
Line 59 Line 59
 #       - pushing /home/httpd/lonTabs/domain.tab  #       - pushing /home/httpd/lonTabs/domain.tab
 # 09/08/2003 Ron Fox:  Told lond to take care of change logging so we  # 09/08/2003 Ron Fox:  Told lond to take care of change logging so we
 #      don't have to remember it:  #      don't have to remember it:
 # $Log$  
 # Revision 1.147  2003/09/23 11:23:31  foxr  
 # Comlplete implementation of reinit functionality.  Must still implement  
 # the actual initialization functionality, but the process can now  
 # receive the request and either invoke the appropriate internal function or  
 # signal the correct lonc.  
 #  
 # Revision 1.146  2003/09/16 10:28:14  foxr  
 # ReinitProcess - decode the process selector and produce the associated pid  
 # filename.  Note: While it is possible to test that valid process selectors are  
 # handled properly I am not able to test that invalid process selectors produce  
 # the appropriate error as lonManage also blocks the use of invalid process selectors.  
 #  
 # Revision 1.145  2003/09/16 10:13:20  foxr  
 # Added ReinitProcess function to oversee the parsing and processing of the  
 # reinit:<process> client request.  
 #  
 # Revision 1.144  2003/09/16 09:47:01  foxr  
 # Added skeletal support for SIGUSR2 (update hosts.tab)  
 #  
 # Revision 1.143  2003/09/15 10:03:52  foxr  
 # Completed and tested code for pushfile.  
 #  
 # Revision 1.142  2003/09/09 20:47:46  www  
 # Permanently store chatroom entries in chatroom.log  
 #  
 # Revision 1.141  2003/09/08 10:32:07  foxr  
 # Added PushFile sub This sub oversees the push of a new configuration table file  
 # Currently supported files are:  
 # - hosts.tab   (transaction pushfile:hosts:contents)  
 # - domain.tab  (transaction pushfile:domain:contents)  
 #  #
   
   
Line 160  my @adderrors    = ("ok", Line 129  my @adderrors    = ("ok",
     "lcuseradd Incorrect number of stdinput lines, must be 3",      "lcuseradd Incorrect number of stdinput lines, must be 3",
     "lcuseradd Too many other simultaneous pwd changes in progress",      "lcuseradd Too many other simultaneous pwd changes in progress",
     "lcuseradd User does not exist",      "lcuseradd User does not exist",
     "lcuseradd Unabel to mak ewww 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 invbalid charcters",      "lcuseradd Usrname 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 492  if (-e $pidfile) { Line 461  if (-e $pidfile) {
   
 # ------------------------------------------------------------- Read hosts file  # ------------------------------------------------------------- Read hosts file
   
 open (CONFIG,"$perlvar{'lonTabDir'}/hosts.tab") || die "Can't read host file";  
   
 while (my $configline=<CONFIG>) {  
     my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);  
     chomp($ip); $ip=~s/\D+$//;  
     $hostid{$ip}=$id;  
     $hostdom{$id}=$domain;  
     $hostip{$id}=$ip;  
     if ($id eq $perlvar{'lonHostID'}) { $thisserver=$name; }  
 }  
 close(CONFIG);  
   
 # establish SERVER socket, bind and listen.  # establish SERVER socket, bind and listen.
 $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},  $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
Line 552  sub HUPSMAN {                      # sig Line 511  sub HUPSMAN {                      # sig
 }  }
   
 #  #
   #    Kill off hashes that describe the host table prior to re-reading it.
   #    Hashes affected are:
   #       %hostid, %hostdom %hostip
   #
   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};
       }
   }
   #
   #   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";
       
       while (my $configline=<CONFIG>) {
    my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);
    chomp($ip); $ip=~s/\D+$//;
    $hostid{$ip}=$id;
    $hostdom{$id}=$domain;
    $hostip{$id}=$ip;
    if ($id eq $perlvar{'lonHostID'}) { $thisserver=$name; }
       }
       close(CONFIG);
   }
   #
   #  Reload the Apache daemon's state.
   #  This is done by invoking /home/httpd/perl/apachereload
   #  a setuid perl script that can be root for us to do this job.
   #
   sub ReloadApache {
       my $execdir = $perlvar{'lonDaemons'};
       my $script  = $execdir."/apachereload";
       system($script);
   }
   
   #
 #   Called in response to a USR2 signal.  #   Called in response to a USR2 signal.
 #   - Reread hosts.tab  #   - Reread hosts.tab
 #   - All children connected to hosts that were removed from hosts.tab  #   - All children connected to hosts that were removed from hosts.tab
Line 563  sub HUPSMAN {                      # sig Line 569  sub HUPSMAN {                      # sig
 #  #
 sub UpdateHosts {  sub UpdateHosts {
     logthis('<font color="blue"> Updating connections </font>');      logthis('<font color="blue"> Updating connections </font>');
       #
       #  The %children hash has the set of IP's we currently have children
       #  on.  These need to be matched against records in the hosts.tab
       #  Any ip's no longer in the table get killed off they correspond to
       #  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.
   
   
       KillHostHashes;
       ReadHostTable;
   
       foreach my $child (keys %children) {
    my $childip = $children{$child};
    if(!$hostid{$childip}) {
       logthis('<font color="blue"> UpdateHosts killing child '
       ." $child for ip $childip </font>");
       kill('INT', $child);
    } else {
       logthis('<font color="green"> keeping child for ip '
       ." $childip (pid=$child) </font>");
    }
       }
       ReloadApache;
 }  }
   
   
 sub checkchildren {  sub checkchildren {
     &initnewstatus();      &initnewstatus();
     &logstatus();      &logstatus();
Line 596  sub checkchildren { Line 626  sub checkchildren {
         }          }
     }      }
     $SIG{ALRM} = 'DEFAULT';      $SIG{ALRM} = 'DEFAULT';
     $SIG{__DIE__} = \&cathcexception;      $SIG{__DIE__} = \&catchcexception;
 }  }
   
 # --------------------------------------------------------------------- Logging  # --------------------------------------------------------------------- Logging
Line 809  $SIG{HUP}  = \&HUPSMAN; Line 839  $SIG{HUP}  = \&HUPSMAN;
 $SIG{USR1} = \&checkchildren;  $SIG{USR1} = \&checkchildren;
 $SIG{USR2} = \&UpdateHosts;  $SIG{USR2} = \&UpdateHosts;
   
   #  Read the host hashes:
   
   ReadHostTable;
   
 # --------------------------------------------------------------  # --------------------------------------------------------------
 #   Accept connections.  When a connection comes in, it is validated  #   Accept connections.  When a connection comes in, it is validated
Line 833  sub make_new_child { Line 866  sub make_new_child {
         or die "Can't block SIGINT for fork: $!\n";          or die "Can't block SIGINT for fork: $!\n";
   
     die "fork: $!" unless defined ($pid = fork);      die "fork: $!" unless defined ($pid = fork);
   
       $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
                                  # connection liveness.
   
       #
       #  Figure out who we're talking to so we can record the peer in 
       #  the pid hash.
       #
       my $caller = getpeername($client);
       my ($port,$iaddr)=unpack_sockaddr_in($caller);
       $clientip=inet_ntoa($iaddr);
           
     if ($pid) {      if ($pid) {
         # Parent records the child's birth and returns.          # Parent records the child's birth and returns.
         sigprocmask(SIG_UNBLOCK, $sigset)          sigprocmask(SIG_UNBLOCK, $sigset)
             or die "Can't unblock SIGINT for fork: $!\n";              or die "Can't unblock SIGINT for fork: $!\n";
         $children{$pid} = 1;          $children{$pid} = $clientip;
         $children++;          $children++;
         &status('Started child '.$pid);          &status('Started child '.$pid);
         return;          return;
Line 865  sub make_new_child { Line 909  sub make_new_child {
 # =============================================================================  # =============================================================================
             # do something with the connection              # do something with the connection
 # -----------------------------------------------------------------------------  # -----------------------------------------------------------------------------
     $client->sockopt(SO_KEEPALIVE, 1);# Enable monitoring of   # see if we know client and check for spoof IP by challenge
                                       # connection liveness.  
             # see if we know client and check for spoof IP by challenge  
  my $caller = getpeername($client);  
             my ($port,$iaddr)=unpack_sockaddr_in($caller);  
             $clientip=inet_ntoa($iaddr);  
             my $clientrec=($hostid{$clientip} ne undef);              my $clientrec=($hostid{$clientip} ne undef);
             &logthis(              &logthis(
 "<font color=yellow>INFO: Connection, $clientip ($hostid{$clientip})</font>"  "<font color=yellow>INFO: Connection, $clientip ($hostid{$clientip})</font>"
Line 1326  sub make_new_child { Line 1366  sub make_new_child {
                        }                         }
 # -------------------------------------- fetch a user file from a remote server  # -------------------------------------- fetch a user file from a remote server
                    } elsif ($userinput =~ /^fetchuserfile/) {                     } elsif ($userinput =~ /^fetchuserfile/) {
                       my ($cmd,$fname)=split(/:/,$userinput);         my ($cmd,$fname)=split(/:/,$userinput);
       my ($udom,$uname,$ufile)=split(/\//,$fname);         my ($udom,$uname,$ufile)=split(/\//,$fname);
                       my $udir=propath($udom,$uname).'/userfiles';         my $udir=propath($udom,$uname).'/userfiles';
                       unless (-e $udir) { mkdir($udir,0770); }         unless (-e $udir) { mkdir($udir,0770); }
                        if (-e $udir) {                         if (-e $udir) {
                        $ufile=~s/^[\.\~]+//;     $ufile=~s/^[\.\~]+//;
                        $ufile=~s/\///g;     $ufile=~s/\///g;
                        my $transname=$udir.'/'.$ufile;     my $destname=$udir.'/'.$ufile;
                        my $remoteurl='http://'.$clientip.'/userfiles/'.$fname;     my $transname=$udir.'/'.$ufile.'.in.transit';
                              my $response;     my $remoteurl='http://'.$clientip.'/userfiles/'.$fname;
                               {     my $response;
                              my $ua=new LWP::UserAgent;     {
                              my $request=new HTTP::Request('GET',"$remoteurl");         my $ua=new LWP::UserAgent;
                              $response=$ua->request($request,$transname);         my $request=new HTTP::Request('GET',"$remoteurl");
       }         $response=$ua->request($request,$transname);
                              if ($response->is_error()) {     }
  unlink($transname);     if ($response->is_error()) {
                                  my $message=$response->status_line;         unlink($transname);
                                  &logthis(         my $message=$response->status_line;
                                   "LWP GET: $message for $fname ($remoteurl)");         &logthis("LWP GET: $message for $fname ($remoteurl)");
  print $client "failed\n";         print $client "failed\n";
                              } else {     } else {
                                  print $client "ok\n";         if (!rename($transname,$destname)) {
                              }     &logthis("Unable to move $transname to $destname");
                      } else {     unlink($transname);
                        print $client "not_home\n";     print $client "failed\n";
                      }          } else {
      print $client "ok\n";
          }
      }
          } else {
      print $client "not_home\n";
          }
 # ------------------------------------------ authenticate access to a user file  # ------------------------------------------ authenticate access to a user file
                    } elsif ($userinput =~ /^tokenauthuserfile/) {                     } elsif ($userinput =~ /^tokenauthuserfile/) {
                        my ($cmd,$fname,$session)=split(/:/,$userinput);                         my ($cmd,$fname,$session)=split(/:/,$userinput);
Removed from v.1.147  
changed lines
  Added in v.1.154

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