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    1: #!/usr/bin/perl -w
    2: #
    3: # The LearningOnline Network with CAPA
    4: # Checks status of RPM packages on system.
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: #
   26: # http://www.lon-capa.org/
   27: #
   28: 
   29: =pod
   30: 
   31: =head1 NAME
   32: 
   33: B<CHECKRPMS> - automated status report about RPMs on a system. 
   34: 
   35: =head1 DESCRIPTION
   36: 
   37: This file automates the process of checking for available updates
   38: to LON-CAPA systems. distprobe is used to determine the Linux distribution.
   39: 
   40: The utility which is used to complete the check depends on the distro:
   41: 
   42: fedora - yum
   43: suse 9.X and sles9 - you
   44: suse 10.X and sles10 - rug
   45: rhel 4 - up2date
   46: others - check-rpms
   47: 
   48: Created by amalgamating previous distribution-specific CHECKRPMS.dist files (where dist was one of: fedora, rhel, suse, sles10, default).
   49: 
   50: Must be run as root or www.
   51: 
   52: =cut
   53: 
   54: use strict;
   55: use lib '/home/httpd/lib/perl/';
   56: use LONCAPA::Configuration;
   57: 
   58: my $tmpfile = '/tmp/CHECKRPMS.'.$$;
   59: my $perlvar= LONCAPA::Configuration::read_conf('loncapa.conf');
   60: 
   61: # Determine who we email
   62: my $emailto = "$perlvar->{'lonAdmEMail'}";
   63: my $subj = $perlvar->{'lonHostID'};
   64: 
   65: # Get Linux distro
   66: open(PIPE, "$perlvar->{'lonDaemons'}/distprobe |");
   67: my $distro = <PIPE>;
   68: close(PIPE);
   69: 
   70: undef($perlvar);
   71: 
   72: my $hostname = `hostname`;
   73: chomp($hostname);
   74: open(TMPFILE,">$tmpfile");
   75: print TMPFILE localtime(time).'    '.$hostname."\n";
   76: close(TMPFILE);
   77: 
   78: my ($cmd,$send,$addsubj);
   79: if ($distro =~ /^fedora\d+$/) {
   80:     $cmd = 'yum update';
   81:     &prepare_msg($tmpfile,$cmd);
   82:     ($send,$addsubj) = &check_with_yum($tmpfile);
   83: } elsif ($distro =~ /^(suse|sles)9\.?\d?$/) {
   84:     $cmd = 'you';
   85:     &prepare_msg($tmpfile,$cmd);
   86:     ($send,$addsubj) = &check_with_you($tmpfile);
   87: } elsif ($distro =~ /^(suse|sles)10\.?\d?$/) {
   88:     $cmd = 'rug up';
   89:     &prepare_msg($tmpfile,$cmd);
   90:     ($send,$addsubj) = &check_with_rug($tmpfile);
   91: } elsif ($distro =~ /^rhes4$/) {
   92:     $cmd ='up2date -u --nox';
   93:     &prepare_msg($tmpfile,$cmd);
   94:     ($send,$addsubj) = &check_with_up2date($tmpfile);
   95: } else {
   96:     $cmd = '/usr/local/bin/check-rpms --update';
   97:     ($send,$addsubj) = &check_with_checkrpms($tmpfile);
   98: }
   99: if ($send) {
  100:     $subj .= $addsubj;
  101:     system(qq{mail -s '$subj' $emailto < $tmpfile});
  102: }
  103: 
  104: sub prepare_msg {
  105:     my ($tmpfile,$cmd) = @_;
  106:     #
  107:     # Put some nice text in $tmpfile
  108:     open(TMPFILE,">>$tmpfile");
  109:     print TMPFILE <<ENDHEADER;
  110: Your system needs to be updated.  Please execute (as root)
  111: 
  112: $cmd
  113: 
  114: to bring it up to date.
  115: 
  116: This is very important for the security of your server.  The packages which need to be updated are listed below.
  117: 
  118: ENDHEADER
  119:     close(TMPFILE);
  120:     return;
  121: }
  122: 
  123: sub check_with_you {
  124:     my ($tmpfile) =@_;
  125:     my $you = '/usr/bin/online_update';
  126:     my $sendflag = 0;
  127:     my $append_to_subj;
  128: 
  129:     if (open (PIPE, "$you -k -len 2>&1 |")) {
  130:         my $output=<PIPE>;
  131:         close(PIPE);
  132:         chomp $output;
  133:         unless ($output eq 'No updates available.') {
  134:             if (open (PIPE, "$you -s -d -len |grep ^INSTALL |")) {
  135:                 my @updates = <PIPE>;
  136:                 close(PIPE);
  137:                 my $allpackages;
  138:                 foreach my $line (@updates) {
  139:                     my $package = substr($line,rindex($line,'/')+1);
  140:                     if ($package ne '') {
  141:                         $allpackages .= $package;
  142:                     }
  143:                 }
  144:                 if ($allpackages ne '') {
  145:                     open(TMPFILE,">>$tmpfile");
  146:                     print TMPFILE $allpackages;
  147:                     close(TMPFILE);
  148:                     $sendflag = 1;
  149:                     $append_to_subj = ' RPMS to upgrade';
  150:                 }
  151:             } else {
  152:                 $sendflag = 1;
  153:                 $append_to_subj = ' Error running RPM update script';
  154:             }
  155:         }
  156:     } else {
  157:         $sendflag = 1;
  158:         $append_to_subj = ' Error running RPM update script';
  159:     }
  160:     return ($sendflag,$append_to_subj);
  161: }
  162: 
  163: sub check_with_yum {
  164:     my ($tmpfile) = @_;
  165:     my $yum = '/usr/bin/yum';
  166:     my $sendflag = 0;
  167:     my $append_to_subj;
  168: 
  169:     #
  170:     # Execute yum command
  171:     my $command = $yum.' check-update '.'>>'.$tmpfile;
  172:     system($command);
  173: 
  174:     my $returnvalue = $?>>8;
  175: 
  176:     #
  177:     # Determine status of yum run
  178:     if (100 == $returnvalue) {
  179:         $sendflag = 1;
  180:         $append_to_subj = ' RPMS to upgrade';
  181:     } elsif (0 != $returnvalue) {
  182:         $sendflag = 1;
  183:         $append_to_subj = ' Error running RPM update script';
  184:     } else {
  185:         # yum returned 0, so everything is up to date.
  186:     }
  187:     return ($sendflag,$append_to_subj);
  188: }
  189: 
  190: sub check_with_up2date {
  191:     my ($tmpfile) = @_;
  192:     my $up2date = '/usr/bin/up2date-nox';
  193:     my $sendflag = 0;
  194:     my $append_to_subj;
  195:     #
  196:     # Execute online_update command to check for updates
  197:     my $up2date_error = 1;
  198:     if (open (PIPE, "$up2date -l 2>&1 |")) {
  199:         my @result=<PIPE>;
  200:         close(PIPE);
  201:         my $output; 
  202:         foreach my $line (@result) {
  203:             if ($line =~ /^The following Packages were marked to be skipped by your configuration:/) {
  204:                 last;
  205:             } else {
  206:                 $output .= $line;
  207:             }
  208:         } 
  209:         if (@result > 0) {
  210:             if ($output =~ /Fetching Obsoletes list/) {
  211:                 $up2date_error = 0;
  212:                 if ($output =~ /Name\s+Version\s+Rel\s+[\n\r\f]+\-+[\n\r\f]+(.+)/s) {
  213:                     my $packagelist = $1;
  214:                     if ($packagelist ne '' && $packagelist !~ /^[\s\n\r\f]+$/) {
  215:                         open(TMPFILE,">>$tmpfile");
  216:                         print TMPFILE $packagelist;
  217:                         close(TMPFILE);
  218:                         $append_to_subj = ' RPMS to upgrade';
  219:                         $sendflag = 1;
  220:                     }
  221:                 }
  222:             }
  223:         }
  224:     }
  225:     if ($up2date_error) {
  226:         $append_to_subj = ' Error running RPM update script';
  227:         $sendflag = 1;
  228:     }
  229:     return ($sendflag,$append_to_subj);
  230: }
  231: 
  232: sub check_with_rug {
  233:     my ($tmpfile) = @_;
  234:     my $rug = '/usr/bin/rug';
  235:     my $sendflag = 0;
  236:     my $append_to_subj;
  237:     #
  238:     # Execute rug command to check for updates
  239:     if (open (PIPE, "$rug up -N 2>&1 |")) {
  240:         my @output=<PIPE>;
  241:         close(PIPE);
  242:         chomp(@output);
  243:         my @clean_output;
  244:         foreach my $line (@output) {
  245:             if ($line =~ /^Waking\sup\sZMD\.\.\./) {
  246:                 next;
  247:             } elsif ($line eq 'Done') {
  248:                 next;
  249:             } elsif ($line eq '') {
  250:                 next;
  251:             } elsif ($line eq 'The following packages will be installed:') {
  252:                 next;
  253:             } elsif ($line eq 'Resolving Dependencies...') {
  254:                 next;
  255:             } elsif ($line eq 'Transaction...') {
  256:                 last;
  257:             } elsif ($line eq 'No updates are available.') {
  258:                 last;
  259:             } elsif ($line eq 'Downloading Packages...') {
  260:                 last;
  261:             } else {
  262:                 push(@clean_output,$line);
  263:             }
  264:         }
  265:         if (@clean_output > 0) {
  266:             open(TMPFILE,">>$tmpfile");
  267:             print TMPFILE join("\n",@clean_output);
  268:             close(TMPFILE);
  269:             $append_to_subj= ' RPMS to upgrade';
  270:             $sendflag = 1;
  271:          }
  272:     } else {
  273:         $append_to_subj = ' Error running RPM update check';
  274:         $sendflag = 1;
  275:     }
  276:     return ($sendflag,$append_to_subj);
  277: }
  278: 
  279: sub check_with_checkrpms {
  280:     my ($tmpfile,$perlvar) = @_;
  281:     my $checkrpms = '/usr/local/bin/check-rpms';
  282:     my $sendflag = 0;
  283:     my $append_to_subj;
  284: 
  285:     # Run Martin Seigert's checkrpms script.  See
  286:     # See http://www.sfu.ca/acs/security/linux/check-rpms.html 
  287:     # for more information.
  288: 
  289:     #
  290:     # Check that checkrpms is installed and is the proper version...
  291:     if (! -e $checkrpms) {
  292:        open(TMPFILE,">>$tmpfile");
  293:        print TMPFILE <<END;
  294: 
  295: Unable to locate check-rpms on your system.  Please go to
  296: http://www.sfu.ca/acs/security/linux/check-rpms.html, download and
  297: install check-rpms on this system.
  298: 
  299: END
  300:         $append_to_subj = ' Error running RPM update check';
  301:         $sendflag = 1; 
  302:     } else {
  303:         #
  304:         # Run check-rpms and capture its output
  305:         if (open (PIPE, "$checkrpms 2>&1 |")) {
  306:             my $output=<PIPE>;
  307:             close(PIPE);
  308:             if ($output ne '') {
  309:                 $output = <<"END";
  310: 
  311: checkrpms checked the status of the packages on your system and
  312: produced the following output:
  313: -------------------------------------------------------
  314: $output
  315: -------------------------------------------------------
  316: If there are rpms which need to be installed, please log into
  317: $perlvar->{'lonHostID'} and run the following command
  318: 
  319: $checkrpms --update
  320: 
  321: If there are kernel packages to be installed, use
  322: 
  323: $checkrpms --update --install-kernel
  324: 
  325: Keeping your system up to date is very important.
  326: Ensuring you are using up to date software is a prerequisite for a
  327: secure system.
  328: 
  329: END
  330:                 open(TMPFILE,">>$tmpfile");
  331:                 print TMPFILE $output;
  332:                 close(TMPFILE);
  333:                 $append_to_subj = ' RPMS to upgrade';
  334:                 $sendflag = 1; 
  335:             }
  336:         }
  337:     }
  338:     return ($sendflag,$append_to_subj);
  339: }