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Diff for /loncom/Attic/lonManage between versions 1.2 and 1.7

version 1.2, 2003/08/12 09:58:49 version 1.7, 2003/08/18 09:56:01
Line 50 Line 50
 #    not the IP address of the host.  #    not the IP address of the host.
 #  #
 #  $Log$  #  $Log$
   #  Revision 1.7  2003/08/18 09:56:01  foxr
   #  1. Require to be run as root.
   #  2. Catch case where no operation switch is supplied and put out usage.
   #  3. skeleton/comments for PushFile function.
   #
   #  Revision 1.6  2003/08/12 11:02:59  foxr
   #  Implement command switch dispatching.
   #
   #  Revision 1.5  2003/08/12 10:55:42  foxr
   #  Complete command line parsing (tested)
   #
   #  Revision 1.4  2003/08/12 10:40:44  foxr
   #  Get switch parsing right.
   #
   #  Revision 1.3  2003/08/12 10:22:35  foxr
   #  Put in parameter parsing infrastructure
   #
 #  Revision 1.2  2003/08/12 09:58:49  foxr  #  Revision 1.2  2003/08/12 09:58:49  foxr
 #  Add usage and skeleton documentation.  #  Add usage and skeleton documentation.
 #  #
 #  #
   use strict; # Because it's good practice.
   use English; # Cause I like meaningful names.
   use Getopt::Long;
   
 sub Usage {} {  sub Usage  {
     print "Usage:";      print "Usage:";
     print <<USAGE;      print <<USAGE;
     lonManage  -push   <tablename>  newfile  host      lonManage  --push=<tablename>  newfile  host
         Push <tablename> to the lonTabs directory.  Note that          Push <tablename> to the lonTabs directory.  Note that
         <tablename> must be one of:          <tablename> must be one of:
            hosts  (hosts.tab)             hosts  (hosts.tab)
            domain (domain.tab)             domain (domain.tab)
   
     lonManage  -reinit lonc host      lonManage  --reinit=lonc host
            Sends a HUP signal to the remote systems's lond.             Sends a HUP signal to the remote systems's lond.
   
     lonmanage  -reinit lond host      lonManage  --reinit=lond host
           Requests the remote system's lond perform the same action as if            Requests the remote system's lond perform the same action as if
           it had received a HUP signal.            it had received a HUP signal.
   
Line 79  USAGE Line 99  USAGE
 }  }
   
 #  #
 #    If command parsing failed, then print usage:  #  Use Getopt::Long to parse the parameters of the program.
   #
   #  Return value is a list consisting of:
   #    A 'command' which is one of:
   #       push   - table push requested.
   #       reinit - reinit requested.
   #   Additional parameters as follows:
   #       for push: Tablename, hostname
   #       for reinit: Appname  hostname
   #
   #   This function does not validation of the parameters of push and
   #   reinit.
   #
   #   returns a list.  The first element of the list is the operation name
   #   (e.g. reinit or push).  The second element is the switch parameter.
   #   for push, this is the table name, for reinit, this is the process name.
   #   Additional elements of the list are the command argument.  The count of
   #   command arguments is validated, but not their semantics.
   #
   #   returns an empty list if the parse fails.
   #
   
   sub ParseArgs {
       my $pushing   = '';
       my $reinitting = '';
   
       if(!GetOptions('push=s'    => \$pushing,
              'reinit=s'  => \$reinitting)) {
    return ();
       }
   
       #  Require exactly   one of --push and --reinit
   
       my $command    = '';
       my $commandarg = '';
       my $paramcount = @ARGV; # Number of additional arguments.
       
   
       if($pushing ne '') {
   
           # --push takes in addition a table, and a host:
           #
    if($paramcount != 2) {
       return (); # Invalid parameter count.
    }
    if($command ne '') {
       return ();
    } else {
       
       $command    = 'push';
       $commandarg = $pushing;
    }
       }
   
       if ($reinitting ne '') {
   
    # --reinit takes in addition just a host name
   
    if($paramcount != 1) {
       return ();
    }
    if($command ne '') {
       return ();
    } else {
       $command    = 'reinit';
       $commandarg = $reinitting; 
    }
       }
   
       #  Build the result list:
   
       my @result = ($command, $commandarg);
       my $i;
       for($i = 0; $i < $paramcount; $i++) {
    push(@result, $ARGV[$i]);
       }
       
       return @result;
   }
   #
   #   Called to push a file to the remote system.
   #   The only legal files to push are hosts.tab and domain.tab.
   #   Security is somewhat improved by
   #   
   #   - Requiring the user run as root.
   #   - Connecting with lonc rather than lond directly ensuring this is a loncapa
   #     host
   #   - We must appear in the remote host's hosts.tab file.
   #   - The host must appear in our hosts.tab file.
   #
   #  Parameters:
   #     tablename - must be one of hosts or domain.
   #     tablefile - name of the file containing the table to push.
   #     host      - name of the host to push this file to.     
   #
   sub PushFile {
       my $tablename = shift;
       my $tablefile = shift;
       my $host      = shift;
       
   }
   
 if(0) {  sub ReinitProcess {
       print "Reinitializing a process\n";
   }
   #--------------------------- Entry point: --------------------------
   
   #  Parse the parameters
   #  If command parsing failed, then print usage:
   
   my @params   = ParseArgs;
   my $nparam   = @params;
   
   if($nparam == 0) {
     Usage;      Usage;
       exit -1;
 }  }
   #
   #   Next, ensure we are running as EID root.
   #
   if ($EUID != 0) {
       die "ENOPRIV - No privilege for requested operation"
   }
   
   
   #   Based on the operation requested invoke the appropriate function:
   
   my $operation = shift @params;
   
   if($operation eq "push") {  # push tablename filename host
       my $tablename = shift @params;
       my $tablefile = shift @params;
       my $host      = shift @params;
       PushFile($tablename, $tablefile, $host);
   
   } elsif($operation eq "reinit") { # reinit processname host.
       my $process   = shift @params;
       my $host      = shift @params;
       ReinitProcess($process, $host);
   }
   else {
       Usage;
   }
   exit 0;
   
 =head1 NAME  =head1 NAME
     lonManage - Command line utility for remote management of lonCAPA      lonManage - Command line utility for remote management of lonCAPA
Line 92  if(0) { Line 251  if(0) {
 =head1 SYNOPSIS  =head1 SYNOPSIS
   
 Usage:  Usage:
     B<lonManage  -push   <tablename>  newfile  host>      B<lonManage  --push=<tablename>  newfile  host>
         Push <tablename> to the lonTabs directory.  Note that          Push <tablename> to the lonTabs directory.  Note that
         <tablename> must be one of:          <tablename> must be one of:
            hosts  (hosts.tab)             hosts  (hosts.tab)
            domain (domain.tab)             domain (domain.tab)
   
     B<lonManage  -reinit lonc host>      B<lonManage  --reinit=lonc host>
            Sends a HUP signal to the remote systems's lond.             Sends a HUP signal to the remote systems's lond.
   
     B<lonmanage  -reinit lond host>      B<lonmanage  --reinit=lond host>
           Requests the remote system's lond perform the same action as if            Requests the remote system's lond perform the same action as if
           it had received a HUP signal.            it had received a HUP signal.
   
Line 113  Usage: Line 272  Usage:
   
 =head1 PREREQUISITES  =head1 PREREQUISITES
   
   =item strict
   =item Getopt::Long
   =item English
   
 =head1  CATEGORIES  =head1  CATEGORIES
     Command line utility      Command line utility
   
Removed from v.1.2  
changed lines
  Added in v.1.7

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