Annotation of loncom/build/CHECKRPMS, revision 1.2

1.1       raeburn     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: $cmd
                    113: 
                    114: to bring it up to date.
                    115: 
                    116: This is very important for the security of your server.  The table below lists the packages which need to be updated.
                    117: 
                    118: ENDHEADER
                    119:     close(TMPFILE);
                    120:     return;
                    121: }
                    122: 
                    123: sub check_with_you {
                    124:     my ($tmpfile) =@_;
                    125:     my $you = '/usr/bin/online_update';
                    126:     my $sendflag = 0;
                    127:     my $append_to_subj;
                    128: 
                    129:     if (open (PIPE, "$you -d -k -l en 2>&1 |")) {
                    130:         my $output=<PIPE>;
                    131:         close(PIPE);
                    132:         chomp $output;
                    133:         unless ($output eq 'No updates available.') {
                    134:             my $command = $you.' -s  -k -l en |grep ^[^I]  >>'.$tmpfile;
                    135:             system($command);
                    136:             $sendflag = 1;
                    137:             $append_to_subj = ' RPMS to upgrade';
                    138:         }
                    139:     } else {
                    140:         $sendflag = 1;
                    141:         $append_to_subj = ' Error running RPM update script';
                    142:     }
                    143:     return ($sendflag,$append_to_subj);
                    144: }
                    145: 
                    146: sub check_with_yum {
                    147:     my ($tmpfile) = @_;
                    148:     my $yum = '/usr/bin/yum';
                    149:     my $sendflag = 0;
                    150:     my $append_to_subj;
                    151: 
                    152:     #
                    153:     # Execute yum command
                    154:     my $command = $yum.' check-update '.'>>'.$tmpfile;
                    155:     system($command);
                    156: 
                    157:     my $returnvalue = $?>>8;
                    158: 
                    159:     #
                    160:     # Determine status of yum run
                    161:     if (100 == $returnvalue) {
                    162:         $sendflag = 1;
                    163:         $append_to_subj = ' RPMS to upgrade';
                    164:     } elsif (0 != $returnvalue) {
                    165:         $sendflag = 1;
                    166:         $append_to_subj = ' Error running RPM update script';
                    167:     } else {
                    168:         # yum returned 0, so everything is up to date.
                    169:     }
                    170:     return ($sendflag,$append_to_subj);
                    171: }
                    172: 
                    173: sub check_with_up2date {
                    174:     my ($tmpfile) = @_;
                    175:     my $up2date = '/usr/bin/up2date-nox';
                    176:     my $sendflag = 0;
                    177:     my $append_to_subj;
                    178:     #
                    179:     # Execute online_update command to check for updates
                    180:     my $up2date_error = 1;
                    181:     if (open (PIPE, "$up2date -l 2>&1 |")) {
                    182:         my @result=<PIPE>;
                    183:         close(PIPE);
                    184:         if (@result > 0) {
                    185:             my $output = join('',@result);
                    186:             if ($output =~ /Fetching Obsoletes list/) {
                    187:                 $up2date_error = 0;
                    188:                 if ($output =~ /Name\s+Version\s+Rel\s+[\n\r\f]+\-+[\n\r\f]+(.+)/s) {
                    189:                     my $packagelist = $1;
                    190:                     unless (($packagelist =~ /^The following Packages were marked to be skipped by your configuration:/) || ($packagelist eq '')) {
                    191:                         open(TMPFILE,">>$tmpfile");
                    192:                         print TMPFILE $packagelist;
                    193:                         close(TMPFILE);
                    194:                         $append_to_subj = ' RPMS to upgrade';
                    195:                         $sendflag = 1;
                    196:                     }
                    197:                 }
                    198:             }
                    199:         }
                    200:     }
                    201:     if ($up2date_error) {
                    202:         $append_to_subj = ' Error running RPM update script';
                    203:         $sendflag = 1;
                    204:     }
                    205:     return ($sendflag,$append_to_subj);
                    206: }
                    207: 
                    208: sub check_with_rug {
                    209:     my ($tmpfile) = @_;
                    210:     my $rug = '/usr/bin/rug';
                    211:     my $sendflag = 0;
                    212:     my $append_to_subj;
                    213:     #
                    214:     # Execute rug command to check for updates
                    215:     if (open (PIPE, "$rug up -N 2>&1 |")) {
                    216:         my @output=<PIPE>;
                    217:         close(PIPE);
                    218:         chomp(@output);
                    219:         my @clean_output;
                    220:         foreach my $line (@output) {
1.2     ! raeburn   221:             if ($line eq 'Waking up ZMD...') {
1.1       raeburn   222:                 next;
1.2     ! raeburn   223:             } elsif ($line eq 'Done') {
        !           224:                 next;
        !           225:             } elsif ($line eq '') {
        !           226:                 next;
        !           227:             } elsif ($line eq 'The following packages will be installed:') {
        !           228:                 next;
        !           229:             } elsif ($line eq 'Resolving Dependencies...') {
        !           230:                 next;
        !           231:             } elsif ($line eq 'Transaction...') {
        !           232:                 last;
        !           233:             } elsif ($line eq 'No updates are available.') {
1.1       raeburn   234:                 last;
                    235:             } else {
                    236:                 push(@clean_output,$line);
                    237:             }
                    238:         }
                    239:         if (@clean_output > 0) {
                    240:             open(TMPFILE,">>$tmpfile");
                    241:             print TMPFILE join("\n",@clean_output);
                    242:             close(TMPFILE);
                    243:             $append_to_subj= ' RPMS to upgrade';
                    244:             $sendflag = 1;
                    245:          }
                    246:     } else {
                    247:         $append_to_subj = ' Error running RPM update check';
                    248:         $sendflag = 1;
                    249:     }
                    250:     return ($sendflag,$append_to_subj);
                    251: }
                    252: 
                    253: sub check_with_checkrpms {
                    254:     my ($tmpfile,$perlvar) = @_;
                    255:     my $checkrpms = '/usr/local/bin/check-rpms';
                    256:     my $sendflag = 0;
                    257:     my $append_to_subj;
                    258: 
                    259:     # Run Martin Seigert's checkrpms script.  See
                    260:     # See http://www.sfu.ca/acs/security/linux/check-rpms.html 
                    261:     # for more information.
                    262: 
                    263:     #
                    264:     # Check that checkrpms is installed and is the proper version...
                    265:     if (! -e $checkrpms) {
                    266:        open(TMPFILE,">>$tmpfile");
                    267:        print TMPFILE <<END;
                    268: 
                    269: Unable to locate check-rpms on your system.  Please go to
                    270: http://www.sfu.ca/acs/security/linux/check-rpms.html, download and
                    271: install check-rpms on this system.
                    272: 
                    273: END
                    274:         $append_to_subj = ' Error running RPM update check';
                    275:         $sendflag = 1; 
                    276:     } else {
                    277:         #
                    278:         # Run check-rpms and capture its output
                    279:         if (open (PIPE, "$checkrpms 2>&1 |")) {
                    280:             my $output=<PIPE>;
                    281:             close(PIPE);
                    282:             if ($output ne '') {
                    283:                 $output = <<"END";
                    284: 
                    285: checkrpms checked the status of the packages on your system and
                    286: produced the following output:
                    287: -------------------------------------------------------
                    288: $output
                    289: -------------------------------------------------------
                    290: If there are rpms which need to be installed, please log into
                    291: $perlvar->{'lonHostID'} and run the following command
                    292: 
                    293: $checkrpms --update
                    294: 
                    295: If there are kernel packages to be installed, use
                    296: 
                    297: $checkrpms --update --install-kernel
                    298: 
                    299: Keeping your system up to date is very important.
                    300: Ensuring you are using up to date software is a prerequisite for a
                    301: secure system.
                    302: 
                    303: END
                    304:                 open(TMPFILE,">>$tmpfile");
                    305:                 print TMPFILE $output;
                    306:                 close(TMPFILE);
                    307:                 $append_to_subj = ' RPMS to upgrade';
                    308:                 $sendflag = 1; 
                    309:             }
                    310:         }
                    311:     }
                    312:     return ($sendflag,$append_to_subj);
                    313: }

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