1: #!/usr/bin/perl
2:
3: =pod
4:
5: =head1 NAME
6:
7: B<CHECKRPMS> - automated status report about RPMs on a system
8:
9: =head1 SYNOPSIS
10:
11: ./CHECKRPMS
12:
13: or
14:
15: perl CHECKRPMS
16:
17: =head1 DESCRIPTION
18:
19: This file automates the usage of Martin Siegert's "check-rpms"
20: script. It runs through a list of possible mirror sites
21: until it finds one with a reasonably good FTP connection.
22:
23: =head2 Future directions
24:
25: Eventually, this script may have a simple argument format
26: that allows the user to VIEW, DOWNLOAD, or AUTOUPDATE their
27: computer. Or, this script may evolve into an interactive
28: series of steps: For example, there may be questions like this:
29:
30: =over 4
31:
32: =item *
33:
34: Do you want to (D)ownload or (A)utoupdate the RPMs
35: in the list above?
36:
37: =item *
38:
39: Specify a download location for the RPMs
40: (default=/tmp/update_my_rpms/)?
41:
42: =back
43:
44: Note that there are no current plans to automate a software upgrade of the
45: kernel. This step should be performed by a qualified system administrator.
46:
47: =head1 AUTHOR
48:
49: Scott Harrison, sharrison@users.sourceforge.net, 2002
50:
51: =cut
52:
53: # =================================================== READ IN COMMAND ARGUMENTS
54: # ---------------------------------------------------- Process download option.
55: my $download=shift(@ARGV);
56: if ($download eq '--download' or $download eq '--redownload')
57: {
58: if ($< != 0) # Download mode requires 'root'.
59: {
60: print('**** ERROR **** Download mode needs to be run as root'."\n");
61: exit(1); # Exit with error status.
62: }
63: `rm -Rf /tmp/loncapa_rpm_updates` if $download eq '--download';
64: $download='-v -dl -d /tmp/loncapa_rpm_updates'; # Part of check-rpms args.
65: }
66: else
67: {
68: $download='';
69: }
70:
71: # =================================================== GENERAL INITIAL VARIABLES
72: # ---------------- The FTP servers (and their directory paths) to check against
73: my @serverpaths_to_try =
74: (
75: 'mirror.pa.msu.edu/linux/redhat/linux/updates/',
76: 'rufus.w3.org/linux/redhat/linux/updates/',
77: 'distro.ibiblio.org/pub/linux/distributions/redhat/updates/',
78: 'limestone.uoregon.edu/redhat/updates/',
79: 'opnsrc.support.compaq.com/linux/redhat/updates.redhat.com/',
80: );
81:
82: # --------------------------------------------------- Determine RedHat version.
83: my $RHversion = (split /\s/, `cat /etc/redhat-release`)[4]; # - 6.2 or 7.3 or ?
84:
85: # ------------------------------------------- Use check-rpms command this way.
86: my $checkcommand = 'check-rpms '.$download.' --rpmuser www -ftp';
87:
88: my $FTPSERVER; # ------------------------- the server portion of the serverpath
89: my $FTPUPDATES; # ----------------------------- the actual update root location
90: my @rpms; # ---------------------------------- this will store the list of RPMs
91: my $goodoutput; # ------------------------------------ good stuff was returned!
92: my $reallygoodoutput; # ------------------------------- you are 100% up-to-date
93:
94: # ----------------------------------------- Find the check-rpms script location
95: if (-e './check-rpms')
96: {
97: $commandpre='perl ./'; # Use the check-rpms in the current directory.
98: }
99: elsif (-e 'loncom/build/check-rpms')
100: {
101: $commandpre='perl loncom/build/'; # Use check-rpms int he loncom/build dir.
102: }
103: else # Cannot find check-rpms, so abort.
104: {
105: die("**** ERROR **** CANNOT FIND THE check-rpms SCRIPT\n");
106: }
107:
108: # Define the overall check-rpms invocation based on the path to the check-rpms
109: # command.
110: $checkcommand = $commandpre.$checkcommand;
111:
112: # ============== Go through all the servers until a decent connection is found.
113: # Notify user of current action.
114: print(<<END);
115: THIS SCRIPT IS NOW PROBING SEVERAL FTP SERVERS....
116: PLEASE BE PATIENT, THIS MAY TAKE A FEW MINUTES.
117: END
118:
119: SERVERLOOP: foreach my $serverpath (@serverpaths_to_try)
120: {
121: $serverpath=~/^(.*?)\//; # Pattern match the ip name.
122: $FTPSERVER=$1; # Set to the ip name.
123: print "Trying $FTPSERVER...\n"; # Notify user of attempts with the ip name.
124: `ping -c 1 $FTPSERVER 2>/dev/null`; # Ping ftp server (are you out there?).
125: if ($?==0) # If the ftp server can be pinged.
126: {
127: print "$FTPSERVER found...\n"; # Tell user the ftp server is found.
128: `ncftpls ftp://$FTPSERVER`; # Try to access server with ftp protocol.
129: if ($?==0) # If the ftp server can be accessed with the ftp protocol.
130: {
131: $FTPUPDATES="$serverpath$RHversion/en/os"; # The full update path.
132: # Print the check-rpms command that will be executed.
133: print($checkcommand.' '.$FTPUPDATES."\n");
134: if ($download) # Was CHECKRPMS run in download mode?
135: {
136: $|=1; # Try to send things immediately to stdout; err umm....
137: # Tell the user about the /tmp/loncapa_rpm_updates directory.
138: print('**** NOTE **** '.
139: 'To check the status of the download, you can '.
140: 'periodically inspect the contents of the '.
141: '/tmp/loncapa_rpm_updates directory. '.
142: 'Please be patient; this download may take a while.'.
143: "\n");
144: # Do the download.
145: print(`$checkcommand $FTPUPDATES 2>\&1`);
146: # Tell the user about what action they need to take with the
147: # downloaded RPMs.
148: print('You may now wish to visit the /tmp/loncapa_rpm_updates'.
149: ' directory and upgrade the RPMs. '."\n".
150: 'If this is a critical server (it is currently being'.
151: ' used for classes) and you do not know how to upgrade'.
152: ' RPMs, you should consult someone who has experience '.
153: 'with the "rpm" command.'."\n");
154: exit(0); # Assume everything is okay and exit.
155: }
156: @rpms=`$checkcommand $FTPUPDATES 2>\&1`; # Read in list of RPMs.
157: # Create a text string that can be pattern matched.
158: my $rpmtext=join('',@rpms);
159: if ($rpmtext=~/You do not seem to have a/) # No www?
160: {
161: print "You do not have a 'www' user on your system.\n".
162: "Please add this user and try this command again.\n";
163: exit(1);
164: }
165: if ($rpmtext=~/This account is currently not/) # ------------ uh-oh
166: {
167: print "...strange error, moving on ($FTPSERVER)\n";
168: }
169: else # --------------------------------------- the output is "good"
170: {
171: $goodoutput=$rpmtext;
172: unless (@rpms) # If there are no RPMs to update.
173: {
174: $reallygoodoutput=<<END;
175: **** NOTE **** All RPMS on your system appear to be up to date.
176: END
177: }
178: last SERVERLOOP;
179: }
180: }
181: print('...cannot establish an ftp session with '.$FTPSERVER."\n");
182: }
183: else
184: {
185: print "...cannot find $FTPSERVER on the network\n";
186: }
187: }
188: if (!$goodoutput) # If never received any useable output, assume "no server".
189: {
190: print "**** ERROR **** Cannot find a working ftp server.\n";
191: exit(1);
192: }
193: elsif ($reallygoodoutput) # Everything is peachy keen and up-to-date already.
194: {
195: print $reallygoodoutput;
196: }
197: else # There are RPMs that need to be updated; show list to user.
198: {
199: my $rpmcount=scalar(@rpms); # Count up size of RPM list.
200: print(<<END); # Print out an advisory warning to user.
201: **** WARNING **** You need to update at least $rpmcount RPMS shown in
202: the list below. THIS IS IMPORTANT FOR SECURITY.
203:
204: END
205: print $goodoutput; # Output the RPM list.
206: print(<<END); # Output instructions to user about taking action.
207:
208: Please visit ftp://$FTPUPDATES
209: and download the RPMS you need.
210: For instructions on working with (and upgrading) RPMS, please
211: visit http://www.rpm.org/max-rpm/.
212: To automatically download these RPMs to /tmp/loncapa_rpm_updates/,
213: run the CHECKRPMS command as "./CHECKRPMS --download"
214: END
215: }
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