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Diff for /loncom/build/Attic/CHECKRPMS.default between versions 1.7 and 1.19

version 1.7, 2002/09/09 15:04:48 version 1.19, 2004/09/01 16:28:26
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 #!/usr/bin/perl  #!/usr/bin/perl -w
   #
   # The LearningOnline Network with CAPA
   #
   # $Id$
   #
   # Copyright Michigan State University Board of Trustees
   #
   # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
   #
   # LON-CAPA is free software; you can redistribute it and/or modify
   # it under the terms of the GNU General Public License as published by
   # the Free Software Foundation; either version 2 of the License, or
   # (at your option) any later version.
   #
   # LON-CAPA is distributed in the hope that it will be useful,
   # but WITHOUT ANY WARRANTY; without even the implied warranty of
   # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   # GNU General Public License for more details.
   #
   # You should have received a copy of the GNU General Public License
   # along with LON-CAPA; if not, write to the Free Software
   # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   #
   # /home/httpd/html/adm/gpl.txt
   #
   # http://www.lon-capa.org/
   #
   # (Navigate problems for statistical reports
   #
   
 =pod  =pod
   
 =head1 NAME  =head1 NAME
   
 B<CHECKRPMS> - automated status report about RPMs on a system  B<CHECKRPMS> - automated status report about RPMs on a system.
   
 =head1 SYNOPSIS  
   
 ./B<CHECKRPMS> [I<modeflag>]  
   
 or  
   
 B<perl> B<CHECKRPMS> [I<modeflag>]  
   
 If I<modeflag> is left blank, the mode is "interactive".  Otherwise,  
 other modes can be specified as shown in the listing below:  
   
 =over 4  
   
   
   
 =back  
   
 =head1 DESCRIPTION  =head1 DESCRIPTION
   
 This file automates the usage of Martin Siegert's "check-rpms"  Runs Martin Seigert's checkrpms script.  See 
 script.  It runs through a list of possible mirror sites  http://www.sfu.ca/acs/security/linux/check-rpms.html for more information.
 until it finds one with a reasonably good FTP connection.  
   
 =head2 Future directions  
   
 Eventually, this script may have a simple argument format  
 that allows the user to VIEW, DOWNLOAD, or AUTOUPDATE their  
 computer.  Or, this script may evolve into an interactive  
 series of steps:  For example, there may be questions like this:  
   
 =over 4  
   
 =item *  
   
 Do you want to (D)ownload or (A)utoupdate the RPMs  
 in the list above?  
   
 =item *  
   
 Specify a download location for the RPMs  
 (default=/tmp/update_my_rpms/)?  
   
 =back  
   
 Note that there are no current plans to automate a software upgrade of the  
 kernel.  This step should be performed by a qualified system administrator.  
   
 =head1 AUTHOR  Must be run as root or www.
   
 Scott Harrison, sharrison@users.sourceforge.net, 2002  
   
 =cut  =cut
   
 # ================================================== READ IN COMMAND ARGUMENTS.  use strict;
   use lib '/home/httpd/lib/perl/';
 # ---------------------------------------------------- Process download option.  use LONCAPA::Configuration;
 my $argument = shift(@ARGV);  #
 my $document;  # Determine who we email
 my $mode;  my %perlvar=%{LONCAPA::Configuration::read_conf('loncapa.conf')};
 if ($argument eq '--download' or $argument eq '--redownload')  my $emailto = "$perlvar{'lonAdmEMail'}";
   {  my $subj=$perlvar{'lonHostID'}.' rpm status';
     if ($< != 0) # Download mode requires 'root'.  
       {  my $checkrpms = '/usr/local/bin/check-rpms';
         print($out  #
       '**** ERROR **** Download mode needs to be run as root'."\n");  # Check that checkrpms is installed and is the proper version...
  exit(0); # Exit.  my $mailmsg = '';
       }  if (! -e $checkrpms) {
     `rm -Rf /tmp/loncapa_rpm_updates` if $argument eq '--download';      $mailmsg = <<END;
     $download='-v -dl -d /tmp/loncapa_rpm_updates'; # Part of check-rpms args.  
     $mode = 'download';  Unable to locate check-rpms on your system.  Please go to 
   }  http://www.sfu.ca/acs/security/linux/check-rpms.html, download and 
 elsif ($argument eq '--view')  install check-rpms on this system.
   {  
     $mode = 'view';  
   }  
 elsif ($argument eq '--cronmail')  
   {  
     $mode = 'cronmail';  
   }  
 elsif ($ENV{'QUERY_STRING'} or $argument eq '--html')  
   {  
     $mode = 'html';  
   }  
 else  
   {  
     $mode = 'interactive';  
   }  
   
 # ================================================== GENERAL INITIAL VARIABLES.  
 my $command_name=$0;  
   
 # ---------------- The FTP servers (and their directory paths) to check against  
 my @serverpaths_to_try =   
   (  
     'distro.ibiblio.org/pub/linux/distributions/redhat/updates/',  
     'mirror.pa.msu.edu/linux/redhat/linux/updates/',  
     'limestone.uoregon.edu/redhat/updates/',  
     'rufus.w3.org/linux/redhat/linux/updates/',  
     'opnsrc.support.compaq.com/linux/redhat/updates.redhat.com/',  
   );  
   
 # -------------------------------------------- Use check-rpms command this way.  
 my $checkcommand = 'check-rpms '.$download.' --rpmuser www -ftp';  
   
 my $FTPSERVER; # ------------------------- the server portion of the serverpath  
 my $FTPUPDATES; # ----------------------------- the actual update root location  
 my @rpms; # ---------------------------------- this will store the list of RPMs  
 my $goodoutput; # ------------------------------------ good stuff was returned!  
 my $reallygoodoutput; # ------------------------------- you are 100% up-to-date  
   
 # ===================================================== Control flow of output.  
 my $out = \*STDOUT; # Default: go to standard output (directly to terminal).  
   
 if ($mode eq 'cronmail') # If cronmail mode, then save to file.  
   {  
     open(FOUT,'>/tmp/CHECKRPMS.'.$$);  
     $out = \*FOUT;  
   }  
   
 $| = 1; # Flush to output whenever possible.  
   
 # ========================================== Variables that must be defineable.  
   
 # --------------------------------------------------- Determine RedHat version.  
 my $RHversion = (split /\s/, `cat /etc/redhat-release`)[4]; # - 6.2 or 7.3 or ?  
   
 unless ($RHversion)  
   {  
     terminate($mode,$out,  
       '**** ERROR **** /etc/redhat-release not found'."\n".  
       'This script does not appear to be running on RedHat.'."\n");  
   }  
   
 # ----------------------------------------- Find the check-rpms script location  
 if (-e './check-rpms')  
   {  
     $commandpre='perl ./'; # Use the check-rpms in the current directory.  
   }  
 elsif (-e 'loncom/build/check-rpms')  
   {  
     $commandpre='perl loncom/build/'; # Use check-rpms in the loncom/build dir.  
   }  
 elsif (-e '/usr/local/loncapa/bin/check-rpms')  
   {  
     $commandpre='perl /usr/local/loncapa/bin/'; # Use /usr/local dir.  
   }  
 else # Cannot find check-rpms, so abort.  
   {  
     terminate($mode,$out,  
       '**** ERROR **** CANNOT FIND THE check-rpms SCRIPT'."\n");  
   }  
   
 # Define check-rpms invocation based on the path to the check-rpms command.  
 $checkcommand = $commandpre.$checkcommand;  
   
 # ============================================================= Initial output.  
   
 print($out <<END) if $mode eq 'html';  
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"  
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">  
 <html>  
 <head>  
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"></meta>  
 <title>CHECKRPMS STATUS REPORT</title>  
 </head>  
 <body bgcolor="white">  
 <h1>CHECKRPMS STATUS REPORT</h1>  
 <hr />  
 <pre>  
 END  
   
 # Notify user of current action.  
 print($out <<END);  
 THIS SCRIPT IS NOW PROBING SEVERAL FTP SERVERS....  
 PLEASE BE PATIENT, THIS MAY TAKE A FEW MINUTES.  
 END  
   
 # ============== Go through all the servers until a decent connection is found.  
 SERVERLOOP: foreach my $serverpath (@serverpaths_to_try)  
   {  
     $serverpath=~/^(.*?)\//; # Pattern match the ip name.  
     $FTPSERVER=$1; # Set to the ip name.  
     print($out "Trying $FTPSERVER...\n"); # Notify of attempts with ip name.  
     `ping -c 1 $FTPSERVER 2>/dev/null`; # Ping ftp server (are you out there?).  
     if ($?==0) # If the ftp server can be pinged.  
       {  
  print($out "$FTPSERVER found...\n"); # Tell user ftp server is found.  
  `ncftpls ftp://$FTPSERVER`; # Try to access server with ftp protocol.  
  if ($?==0) # If the ftp server can be accessed with the ftp protocol.  
           {  
     $FTPUPDATES="$serverpath$RHversion/en/os"; # The full update path.  
     # Print the check-rpms command that will be executed.  
     print($out $checkcommand.' '.$FTPUPDATES."\n");  
     if ($mode eq 'download') # Was CHECKRPMS run in download mode?  
               {  
  $|=1; # Try to send things immediately to stdout; err umm....  
  # Tell the user about the /tmp/loncapa_rpm_updates directory.  
  print($out '**** NOTE **** '.  
       'To check the status of the download, you can '.  
       'periodically inspect the contents of the '.  
       '/tmp/loncapa_rpm_updates directory.  '.  
       'Please be patient; this download may take a while.'.  
       "\n");  
  # Do the download.  
  print($out `$checkcommand $FTPUPDATES 2>\&1`);  
  # Tell the user about what action they need to take with the  
  # downloaded RPMs.  
  print($out  
       'You may now wish to visit the /tmp/loncapa_rpm_updates'.  
       ' directory and upgrade the RPMs.  '."\n".  
       'If this is a critical server (it is currently being'.  
       ' used for classes) and you do not know how to upgrade'.  
       ' RPMs, you should consult someone who has experience '.  
       'with the "rpm" command.'."\n");  
  clean_exit($mode,$out,0); # Assume everything is okay and exit.  
       }  
     @rpms=`$checkcommand $FTPUPDATES 2>\&1`; # Read in list of RPMs.  
     # Create a text string that can be pattern matched.  
     my $rpmtext=join('',@rpms);  
     if ($rpmtext=~/You do not seem to have a/) # No www?  
               {  
  print($out "You do not have a 'www' user on your system.\n".  
       "Please add this user and try this command again.\n");  
  clean_exit($mode,$out,0);  
       }  
     if ($rpmtext=~/This account is currently not/) # ------------ uh-oh  
       {  
  print($out "...strange error, moving on ($FTPSERVER)\n");  
       }  
     else # --------------------------------------- the output is "good"  
       {  
  $goodoutput=$rpmtext;  
  unless (@rpms) # If there are no RPMs to update.  
   {  
     $reallygoodoutput = <<END;  
 **** NOTE **** All RPMS on your system appear to be up to date.  
 END  
                     $goodoutput = ' ';  
   }  
  last SERVERLOOP;  
       }  
   }  
  print($out '...cannot establish an ftp session with '.$FTPSERVER."\n");  
       }  
     else  
       {  
  print($out "...cannot find $FTPSERVER on the network\n");  
       }  
   }  
 if (!$goodoutput) # If never received any useable output, assume "no server".  
   {  
     print($out '**** ERROR **** Cannot find a working ftp server.'."\n");  
     clean_exit($mode,$out,0);  
   }  
 elsif ($reallygoodoutput) # Everything is peachy keen and up-to-date already.  
   {  
     print($out $reallygoodoutput);  
   }  
 else # There are RPMs that need to be updated; show list to user.  
   {  
     my $rpmcount=scalar(@rpms); # Count up size of RPM list.  
     print($out <<END); # Print out an advisory warning to user.  
 **** WARNING **** You need to update at least $rpmcount RPMS shown in  
 the list below.  THIS IS IMPORTANT FOR SECURITY.  
   
 END  
     print($out $goodoutput); # Output the RPM list.  
     if ($mode eq 'interactive')  
       {  
  print($out <<END);  
 Do you want to download the RPMs listed above (y/n)?  
 END  
         my $in=<>;  
  if ($in=~/^y/)  
   {  
             print($out 'Please be patient... downloading into '.  
   '/tmp/loncapa_rpm_updates'."\n");  
             print($out `perl $command_name --download`);  
             clean_exit($mode,$out,0);  
   }  
       }  
     print($out <<END); # Output instructions to user about taking action.  
   
 Please visit ftp://$FTPUPDATES  
 and download the RPMS you need.  
 For instructions on working with (and upgrading) RPMS, please  
 visit http://www.rpm.org/max-rpm/.  
 To automatically download these RPMs to /tmp/loncapa_rpm_updates/,  
 run the CHECKRPMS command as "./CHECKRPMS --download"  
 END  
     if ($mode eq 'cronmail')  
       {  
  print($out <<END); # Output more instructions to user.  
 CHECKRPMS should be located in /usr/local/loncapa/bin/.  
 END  
       }  
   }  
   
 clean_exit($mode,$out,0);  
   
 # ================================================================ Subroutines.  
   
 sub clean_exit  
   {  
     my ($mode,$out,$code)=@_;  
   
     if ($mode eq 'cronmail') # If cronmail mode, then mail LON-CAPA sys admin.  
       {  
         close(FOUT);  
  # Read in configuration to get e-mail addresses.  
  my $perlvarref = read_conf('loncapa.conf');  
  my %perlvar = %{$perlvarref};  
  undef $perlvarref;  
  delete $perlvar{'lonReceipt'}; # remove since sensitive  
  delete $perlvar{'lonSqlAccess'}; # remove since sensitive  
   
  # Set metadata for the e-mail.  
         my $emailto = "$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";  
 # my $emailto = "sharrison\@users.sourceforge.net";  
  my $subj="LON: $perlvar{'lonHostID'}, RPMS to upgrade";  
  system(  
        'metasend -b -t '.$emailto.' -s '.  
        "'$subj' -f /tmp/CHECKRPMS.$$ -m text/plain");  
       }  
   
     print($out <<END) if $mode eq 'html'; # If html mode, print ending tags.  
 </pre>  
 </body>  
 </html>  
 END  END
     exit($code);  
   }  
   
 sub terminate  
   {  
     my ($mode,$out,$output);  
     if ($mode eq 'html')  
       {  
         print($out <<END);  
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"  
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">  
 <html>  
 <head>  
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"></meta>  
 <title>CHECKRPMS ERROR</title>  
 </head>  
 <body bgcolor="white">  
 <h1>CHECKRPMS ERROR</h1>  
 <hr />  
 <p><font color="red"><font size="+1">  
 END  
       }  
     print($out $output);  
     if ($mode eq 'html')  
       {  
         print($out <<END);  
 </font></font></p></body></html>  
 END  
       }  
   }  
   
   
 # - read_conf: read LON-CAPA server configuration, especially PerlSetVar values  }
 sub read_conf  
   {  #
     my (@conf_files)=@_;  # Run check-rpms and capture its output
     my %perlvar;  $mailmsg = `$checkrpms`;
     my $confdir='/etc/httpd/conf/';  
     foreach my $filename (@conf_files,'loncapa_apache.conf')  #
       {  # Email the user the output of checkrpms
  open(CONFIG,'<'.$confdir.$filename) or  if ($mailmsg ne '') {
     die("Can't read $confdir$filename");      $mailmsg =<<"END";
  while (my $configline=<CONFIG>)  checkrpms checked the status of the packages on your system and 
   {  produced the following output:
     if ($configline =~ /^[^\#]*PerlSetVar/)  -------------------------------------------------------
       {  $mailmsg
  my ($unused,$varname,$varvalue)=split(/\s+/,$configline);  -------------------------------------------------------
  chomp($varvalue);  If there are rpms which need to be installed, please log into
  $perlvar{$varname}=$varvalue;  $perlvar{'lonHostID'} and run the following command
       }  
   }  $checkrpms --update
  close(CONFIG);  
       }  If there are kernel packages to be installed, use
     my $perlvarref=\%perlvar;  
     return ($perlvarref);  $checkrpms --update --install-kernel
   }  
   Keeping your system up to date is very important.
   Ensuring you are using up to date software is a prerequisite for a 
   secure system.
   
   END
       my $mail_file = '/tmp/CHECKRPMS.'.$$;
       open(MAILFILE,">$mail_file") || die("Unable to write to ".$mail_file);
       print MAILFILE $mailmsg.$/;
       close(MAILFILE);
       my $mailcommand = "mail -s '$subj' $emailto <$mail_file";
       print STDERR $mailcommand;
       system($mailcommand);
   }
   
   exit;
Removed from v.1.7  
changed lines
  Added in v.1.19

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