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Diff for /loncom/lond between versions 1.140 and 1.143

version 1.140, 2003/08/26 11:15:57 version 1.143, 2003/09/15 10:03:52
Line 57 Line 57
 #      Management functions supported include:  #      Management functions supported include:
 #       - pushing /home/httpd/lonTabs/hosts.tab  #       - pushing /home/httpd/lonTabs/hosts.tab
 #       - 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
   #      don't have to remember it:
   # $Log$
   # 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)
   #
   
   
 use strict;  use strict;
 use lib '/home/httpd/lib/perl/';  use lib '/home/httpd/lib/perl/';
Line 75  use Authen::Krb4; Line 90  use Authen::Krb4;
 use Authen::Krb5;  use Authen::Krb5;
 use lib '/home/httpd/lib/perl/';  use lib '/home/httpd/lib/perl/';
 use localauth;  use localauth;
   use File::Copy;
   
 my $DEBUG = 0;       # Non zero to enable debug log entries.  my $DEBUG = 0;       # Non zero to enable debug log entries.
   
Line 95  my $thisserver; Line 111  my $thisserver;
 my %hostid;  my %hostid;
 my %hostdom;  my %hostdom;
 my %hostip;  my %hostip;
   my %perlvar; # Will have the apache conf defined perl vars.
   
 #  #
 #  The array below are password error strings."  #  The array below are password error strings."
Line 173  sub ValidManager { Line 190  sub ValidManager {
     }      }
 }  }
 #  #
   #  CopyFile:  Called as part of the process of installing a 
   #             new configuration file.  This function copies an existing
   #             file to a backup file.
   # Parameters:
   #     oldfile  - Name of the file to backup.
   #     newfile  - Name of the backup file.
   # Return:
   #     0   - Failure (errno has failure reason).
   #     1   - Success.
   #
   sub CopyFile {
       my $oldfile = shift;
       my $newfile = shift;
   
       #  The file must exist:
   
       if(-e $oldfile) {
   
    # Read the old file.
   
    my $oldfh = IO::File->new("< $oldfile");
    if(!$oldfh) {
       return 0;
    }
    my @contents = <$oldfh>;  # Suck in the entire file.
   
    # write the backup file:
   
    my $newfh = IO::File->new("> $newfile");
    if(!(defined $newfh)){
       return 0;
    }
    my $lines = scalar @contents;
    for (my $i =0; $i < $lines; $i++) {
       print $newfh ($contents[$i]);
    }
   
    $oldfh->close;
    $newfh->close;
   
    chmod(0660, $newfile);
   
    return 1;
       
       } else {
    return 0;
       }
   }
   
   #
   #   InstallFile: Called to install an administrative file:
   #       - The file is created with <name>.tmp
   #       - The <name>.tmp file is then mv'd to <name>
   #   This lugubrious procedure is done to ensure that we are never without
   #   a valid, even if dated, version of the file regardless of who crashes
   #   and when the crash occurs.
   #
   #  Parameters:
   #       Name of the file
   #       File Contents.
   #  Return:
   #      nonzero - success.
   #      0       - failure and $! has an errno.
   #
   sub InstallFile {
       my $Filename = shift;
       my $Contents = shift;
       my $TempFile = $Filename.".tmp";
   
       #  Open the file for write:
   
       my $fh = IO::File->new("> $TempFile"); # Write to temp.
       if(!(defined $fh)) {
    &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
    return 0;
       }
       #  write the contents of the file:
   
       print $fh ($Contents); 
       $fh->close; # In case we ever have a filesystem w. locking
   
       chmod(0660, $TempFile);
   
       # Now we can move install the file in position.
       
       move($TempFile, $Filename);
   
       return 1;
   }
   
   #
   #   PushFile:  Called to do an administrative push of a file.
   #              - Ensure the file being pushed is one we support.
   #              - Backup the old file to <filename.saved>
   #              - Separate the contents of the new file out from the
   #                rest of the request.
   #              - Write the new file.
   #  Parameter:
   #     Request - The entire user request.  This consists of a : separated
   #               string pushfile:tablename:contents.
   #     NOTE:  The contents may have :'s in it as well making things a bit
   #            more interesting... but not much.
   #  Returns:
   #     String to send to client ("ok" or "refused" if bad file).
   #
   sub PushFile {
       my $request = shift;    
       my ($command, $filename, $contents) = split(":", $request, 3);
       
       #  At this point in time, pushes for only the following tables are
       #  supported:
       #   hosts.tab  ($filename eq host).
       #   domain.tab ($filename eq domain).
       # Construct the destination filename or reject the request.
       #
       # lonManage is supposed to ensure this, however this session could be
       # part of some elaborate spoof that managed somehow to authenticate.
       #
   
       my $tablefile = $perlvar{'lonTabDir'}.'/'; # need to precede with dir.
       if ($filename eq "host") {
    $tablefile .= "hosts.tab";
       } elsif ($filename eq "domain") {
    $tablefile .= "domain.tab";
       } else {
    return "refused";
       }
       #
       # >copy< the old table to the backup table
       #        don't rename in case system crashes/reboots etc. in the time
       #        window between a rename and write.
       #
       my $backupfile = $tablefile;
       $backupfile    =~ s/\.tab$/.old/;
       if(!CopyFile($tablefile, $backupfile)) {
    &logthis('<font color="green"> CopyFile from '.$tablefile." to ".$backupfile." failed </font>");
    return "error:$!";
       }
       &logthis('<font color="green"> Pushfile: backed up '
       .$tablefile." to $backupfile</font>");
       
       #  Install the new file:
   
       if(!InstallFile($tablefile, $contents)) {
    &logthis('<font color="red"> Pushfile: unable to install '
    .$tablefile." $! </font>");
    return "error:$!";
       }
       else {
    &logthis('<font color="green"> Installed new '.$tablefile
    ."</font>");
   
       }
   
   
       #  Indicate success:
    
       return "ok";
   
   }
   #
 #  Convert an error return code from lcpasswd to a string value.  #  Convert an error return code from lcpasswd to a string value.
 #  #
 sub lcpasswdstrerror {  sub lcpasswdstrerror {
Line 222  $SIG{__DIE__}=\&catchexception; Line 400  $SIG{__DIE__}=\&catchexception;
 # ---------------------------------- Read loncapa_apache.conf and loncapa.conf  # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
 &status("Read loncapa.conf and loncapa_apache.conf");  &status("Read loncapa.conf and loncapa_apache.conf");
 my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');  my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
 my %perlvar=%{$perlvarref};  %perlvar=%{$perlvarref};
 undef $perlvarref;  undef $perlvarref;
   
 # ----------------------------- Make sure this process is running from user=www  # ----------------------------- Make sure this process is running from user=www
Line 745  sub make_new_child { Line 923  sub make_new_child {
        if($wasenc == 1) {         if($wasenc == 1) {
    my $cert = GetCertificate($userinput);     my $cert = GetCertificate($userinput);
    if(ValidManager($cert)) {     if(ValidManager($cert)) {
        print $client "ok\n";         my $reply = PushFile($userinput);
          print $client "$reply\n";
    } else {     } else {
        print $client "refused\n";         print $client "refused\n";
    }      } 
Line 1975  sub chatadd { Line 2154  sub chatadd {
     my %hash;      my %hash;
     my $proname=&propath($cdom,$cname);      my $proname=&propath($cdom,$cname);
     my @entries=();      my @entries=();
       my $time=time;
     if (tie(%hash,'GDBM_File',"$proname/nohist_chatroom.db",      if (tie(%hash,'GDBM_File',"$proname/nohist_chatroom.db",
     &GDBM_WRCREAT(),0640)) {      &GDBM_WRCREAT(),0640)) {
  @entries=map { $_.':'.$hash{$_} } sort keys %hash;   @entries=map { $_.':'.$hash{$_} } sort keys %hash;
  my $time=time;  
  my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);   my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
  my ($thentime,$idnum)=split(/\_/,$lastid);   my ($thentime,$idnum)=split(/\_/,$lastid);
  my $newid=$time.'_000000';   my $newid=$time.'_000000';
Line 1998  sub chatadd { Line 2177  sub chatadd {
  }   }
  untie %hash;   untie %hash;
     }      }
       {
    my $hfh;
    if ($hfh=IO::File->new(">>$proname/chatroom.log")) { 
       print $hfh "$time:".&unescape($newchat)."\n";
    }
       }
 }  }
   
 sub unsub {  sub unsub {
Removed from v.1.140  
changed lines
  Added in v.1.143

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