Annotation of loncom/build/CHECKRPMS.default, revision 1.8
1.1 harris41 1: #!/usr/bin/perl
2:
1.2 harris41 3: =pod
4:
5: =head1 NAME
6:
7: B<CHECKRPMS> - automated status report about RPMs on a system
8:
9: =head1 SYNOPSIS
10:
1.7 harris41 11: ./B<CHECKRPMS> [I<modeflag>]
1.2 harris41 12:
13: or
14:
1.7 harris41 15: B<perl> B<CHECKRPMS> [I<modeflag>]
16:
17: If I<modeflag> is left blank, the mode is "interactive". Otherwise,
18: other modes can be specified as shown in the listing below:
19:
20: =over 4
21:
1.8 ! harris41 22: =item DEFAULT
1.7 harris41 23:
1.8 ! harris41 24: When left blank, the script runs in interactive mode. First, a proposed
! 25: list of RPMs is presented to the user. Then, the user is asked if he or
! 26: she wants to download the RPMs to /tmp/loncapa_rpm_updates/.
1.7 harris41 27:
1.8 ! harris41 28: =item view
1.2 harris41 29:
1.8 ! harris41 30: A proposed list of RPMs to update is presented to the user.
1.2 harris41 31:
1.8 ! harris41 32: =item download
1.2 harris41 33:
1.8 ! harris41 34: A proposed set of RPMs to update are downloaded into /tmp/loncapa_rpm_updates/.
! 35: Note that prior information inside /tmp/loncapa_rpm_updates/ is removed.
1.2 harris41 36:
1.8 ! harris41 37: =item redownload
1.2 harris41 38:
1.8 ! harris41 39: A proposed set of RPMs to update are downloaded into /tmp/loncapa_rpm_updates/.
! 40: Note that prior information inside /tmp/loncapa_rpm_updates/ is not removed.
! 41: (This helps support continual attempts from dialup connections.)
1.2 harris41 42:
1.8 ! harris41 43: =item html
1.2 harris41 44:
1.8 ! harris41 45: Similar to view mode. XHTML-formatted output is delivered; presumably
! 46: to a web client. html mode is automatically chosen if $ENV{'QUERY_STRING'} is
! 47: defined.
1.2 harris41 48:
1.8 ! harris41 49: =back
1.2 harris41 50:
1.8 ! harris41 51: =head1 DESCRIPTION
1.2 harris41 52:
1.8 ! harris41 53: This file automates the usage of Martin Siegert's "check-rpms"
! 54: script. It runs through a list of possible mirror sites
! 55: until it finds one with a reasonably good FTP connection.
1.2 harris41 56:
1.8 ! harris41 57: For instructions on usage, see L<SYNOPSIS>.
1.2 harris41 58:
59: =head1 AUTHOR
60:
61: Scott Harrison, sharrison@users.sourceforge.net, 2002
62:
63: =cut
64:
1.7 harris41 65: # ================================================== READ IN COMMAND ARGUMENTS.
66:
1.4 harris41 67: # ---------------------------------------------------- Process download option.
1.7 harris41 68: my $argument = shift(@ARGV);
69: my $document;
70: my $mode;
71: if ($argument eq '--download' or $argument eq '--redownload')
1.4 harris41 72: {
73: if ($< != 0) # Download mode requires 'root'.
74: {
1.7 harris41 75: print($out
76: '**** ERROR **** Download mode needs to be run as root'."\n");
77: exit(0); # Exit.
1.4 harris41 78: }
1.7 harris41 79: `rm -Rf /tmp/loncapa_rpm_updates` if $argument eq '--download';
1.4 harris41 80: $download='-v -dl -d /tmp/loncapa_rpm_updates'; # Part of check-rpms args.
1.7 harris41 81: $mode = 'download';
82: }
83: elsif ($argument eq '--view')
84: {
85: $mode = 'view';
86: }
87: elsif ($argument eq '--cronmail')
88: {
89: $mode = 'cronmail';
90: }
91: elsif ($ENV{'QUERY_STRING'} or $argument eq '--html')
92: {
93: $mode = 'html';
1.4 harris41 94: }
95: else
96: {
1.7 harris41 97: $mode = 'interactive';
1.4 harris41 98: }
99:
1.7 harris41 100: # ================================================== GENERAL INITIAL VARIABLES.
101: my $command_name=$0;
102:
1.2 harris41 103: # ---------------- The FTP servers (and their directory paths) to check against
1.5 harris41 104: my @serverpaths_to_try =
105: (
1.7 harris41 106: 'distro.ibiblio.org/pub/linux/distributions/redhat/updates/',
1.5 harris41 107: 'mirror.pa.msu.edu/linux/redhat/linux/updates/',
1.7 harris41 108: 'limestone.uoregon.edu/redhat/updates/',
1.5 harris41 109: 'rufus.w3.org/linux/redhat/linux/updates/',
110: 'opnsrc.support.compaq.com/linux/redhat/updates.redhat.com/',
111: );
1.2 harris41 112:
1.7 harris41 113: # -------------------------------------------- Use check-rpms command this way.
1.5 harris41 114: my $checkcommand = 'check-rpms '.$download.' --rpmuser www -ftp';
1.2 harris41 115:
116: my $FTPSERVER; # ------------------------- the server portion of the serverpath
117: my $FTPUPDATES; # ----------------------------- the actual update root location
118: my @rpms; # ---------------------------------- this will store the list of RPMs
119: my $goodoutput; # ------------------------------------ good stuff was returned!
120: my $reallygoodoutput; # ------------------------------- you are 100% up-to-date
121:
1.7 harris41 122: # ===================================================== Control flow of output.
123: my $out = \*STDOUT; # Default: go to standard output (directly to terminal).
124:
125: if ($mode eq 'cronmail') # If cronmail mode, then save to file.
126: {
127: open(FOUT,'>/tmp/CHECKRPMS.'.$$);
128: $out = \*FOUT;
129: }
130:
131: $| = 1; # Flush to output whenever possible.
132:
133: # ========================================== Variables that must be defineable.
134:
135: # --------------------------------------------------- Determine RedHat version.
136: my $RHversion = (split /\s/, `cat /etc/redhat-release`)[4]; # - 6.2 or 7.3 or ?
137:
138: unless ($RHversion)
139: {
140: terminate($mode,$out,
141: '**** ERROR **** /etc/redhat-release not found'."\n".
142: 'This script does not appear to be running on RedHat.'."\n");
143: }
144:
1.2 harris41 145: # ----------------------------------------- Find the check-rpms script location
1.5 harris41 146: if (-e './check-rpms')
147: {
148: $commandpre='perl ./'; # Use the check-rpms in the current directory.
149: }
150: elsif (-e 'loncom/build/check-rpms')
151: {
1.7 harris41 152: $commandpre='perl loncom/build/'; # Use check-rpms in the loncom/build dir.
153: }
154: elsif (-e '/usr/local/loncapa/bin/check-rpms')
155: {
156: $commandpre='perl /usr/local/loncapa/bin/'; # Use /usr/local dir.
1.5 harris41 157: }
158: else # Cannot find check-rpms, so abort.
159: {
1.7 harris41 160: terminate($mode,$out,
161: '**** ERROR **** CANNOT FIND THE check-rpms SCRIPT'."\n");
1.5 harris41 162: }
1.2 harris41 163:
1.7 harris41 164: # Define check-rpms invocation based on the path to the check-rpms command.
1.5 harris41 165: $checkcommand = $commandpre.$checkcommand;
1.2 harris41 166:
1.7 harris41 167: # ============================================================= Initial output.
168:
169: print($out <<END) if $mode eq 'html';
170: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
171: "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
172: <html>
173: <head>
174: <meta http-equiv="Content-Type" content="text/html; charset=utf-8"></meta>
175: <title>CHECKRPMS STATUS REPORT</title>
176: </head>
177: <body bgcolor="white">
178: <h1>CHECKRPMS STATUS REPORT</h1>
179: <hr />
180: <pre>
181: END
182:
1.5 harris41 183: # Notify user of current action.
1.7 harris41 184: print($out <<END);
1.2 harris41 185: THIS SCRIPT IS NOW PROBING SEVERAL FTP SERVERS....
186: PLEASE BE PATIENT, THIS MAY TAKE A FEW MINUTES.
187: END
188:
1.7 harris41 189: # ============== Go through all the servers until a decent connection is found.
1.5 harris41 190: SERVERLOOP: foreach my $serverpath (@serverpaths_to_try)
191: {
192: $serverpath=~/^(.*?)\//; # Pattern match the ip name.
193: $FTPSERVER=$1; # Set to the ip name.
1.7 harris41 194: print($out "Trying $FTPSERVER...\n"); # Notify of attempts with ip name.
1.5 harris41 195: `ping -c 1 $FTPSERVER 2>/dev/null`; # Ping ftp server (are you out there?).
196: if ($?==0) # If the ftp server can be pinged.
197: {
1.7 harris41 198: print($out "$FTPSERVER found...\n"); # Tell user ftp server is found.
1.5 harris41 199: `ncftpls ftp://$FTPSERVER`; # Try to access server with ftp protocol.
200: if ($?==0) # If the ftp server can be accessed with the ftp protocol.
201: {
202: $FTPUPDATES="$serverpath$RHversion/en/os"; # The full update path.
203: # Print the check-rpms command that will be executed.
1.7 harris41 204: print($out $checkcommand.' '.$FTPUPDATES."\n");
205: if ($mode eq 'download') # Was CHECKRPMS run in download mode?
1.5 harris41 206: {
207: $|=1; # Try to send things immediately to stdout; err umm....
208: # Tell the user about the /tmp/loncapa_rpm_updates directory.
1.7 harris41 209: print($out '**** NOTE **** '.
1.5 harris41 210: 'To check the status of the download, you can '.
211: 'periodically inspect the contents of the '.
212: '/tmp/loncapa_rpm_updates directory. '.
213: 'Please be patient; this download may take a while.'.
214: "\n");
215: # Do the download.
1.7 harris41 216: print($out `$checkcommand $FTPUPDATES 2>\&1`);
1.5 harris41 217: # Tell the user about what action they need to take with the
218: # downloaded RPMs.
1.7 harris41 219: print($out
220: 'You may now wish to visit the /tmp/loncapa_rpm_updates'.
1.5 harris41 221: ' directory and upgrade the RPMs. '."\n".
222: 'If this is a critical server (it is currently being'.
223: ' used for classes) and you do not know how to upgrade'.
224: ' RPMs, you should consult someone who has experience '.
225: 'with the "rpm" command.'."\n");
1.7 harris41 226: clean_exit($mode,$out,0); # Assume everything is okay and exit.
1.5 harris41 227: }
228: @rpms=`$checkcommand $FTPUPDATES 2>\&1`; # Read in list of RPMs.
229: # Create a text string that can be pattern matched.
1.2 harris41 230: my $rpmtext=join('',@rpms);
1.5 harris41 231: if ($rpmtext=~/You do not seem to have a/) # No www?
232: {
1.7 harris41 233: print($out "You do not have a 'www' user on your system.\n".
234: "Please add this user and try this command again.\n");
235: clean_exit($mode,$out,0);
1.5 harris41 236: }
237: if ($rpmtext=~/This account is currently not/) # ------------ uh-oh
238: {
1.7 harris41 239: print($out "...strange error, moving on ($FTPSERVER)\n");
1.5 harris41 240: }
241: else # --------------------------------------- the output is "good"
242: {
1.2 harris41 243: $goodoutput=$rpmtext;
1.5 harris41 244: unless (@rpms) # If there are no RPMs to update.
245: {
1.7 harris41 246: $reallygoodoutput = <<END;
1.2 harris41 247: **** NOTE **** All RPMS on your system appear to be up to date.
248: END
1.7 harris41 249: $goodoutput = ' ';
1.5 harris41 250: }
1.2 harris41 251: last SERVERLOOP;
1.5 harris41 252: }
253: }
1.7 harris41 254: print($out '...cannot establish an ftp session with '.$FTPSERVER."\n");
1.5 harris41 255: }
256: else
257: {
1.7 harris41 258: print($out "...cannot find $FTPSERVER on the network\n");
1.5 harris41 259: }
260: }
261: if (!$goodoutput) # If never received any useable output, assume "no server".
262: {
1.7 harris41 263: print($out '**** ERROR **** Cannot find a working ftp server.'."\n");
264: clean_exit($mode,$out,0);
1.5 harris41 265: }
266: elsif ($reallygoodoutput) # Everything is peachy keen and up-to-date already.
267: {
1.7 harris41 268: print($out $reallygoodoutput);
1.5 harris41 269: }
270: else # There are RPMs that need to be updated; show list to user.
271: {
272: my $rpmcount=scalar(@rpms); # Count up size of RPM list.
1.7 harris41 273: print($out <<END); # Print out an advisory warning to user.
1.4 harris41 274: **** WARNING **** You need to update at least $rpmcount RPMS shown in
1.1 harris41 275: the list below. THIS IS IMPORTANT FOR SECURITY.
276:
277: END
1.7 harris41 278: print($out $goodoutput); # Output the RPM list.
279: if ($mode eq 'interactive')
280: {
281: print($out <<END);
282: Do you want to download the RPMs listed above (y/n)?
283: END
284: my $in=<>;
285: if ($in=~/^y/)
286: {
287: print($out 'Please be patient... downloading into '.
288: '/tmp/loncapa_rpm_updates'."\n");
289: print($out `perl $command_name --download`);
290: clean_exit($mode,$out,0);
291: }
292: }
293: print($out <<END); # Output instructions to user about taking action.
1.1 harris41 294:
295: Please visit ftp://$FTPUPDATES
296: and download the RPMS you need.
297: For instructions on working with (and upgrading) RPMS, please
298: visit http://www.rpm.org/max-rpm/.
1.4 harris41 299: To automatically download these RPMs to /tmp/loncapa_rpm_updates/,
300: run the CHECKRPMS command as "./CHECKRPMS --download"
1.1 harris41 301: END
1.7 harris41 302: if ($mode eq 'cronmail')
303: {
304: print($out <<END); # Output more instructions to user.
305: CHECKRPMS should be located in /usr/local/loncapa/bin/.
306: END
307: }
308: }
309:
310: clean_exit($mode,$out,0);
311:
312: # ================================================================ Subroutines.
313:
314: sub clean_exit
315: {
316: my ($mode,$out,$code)=@_;
317:
318: if ($mode eq 'cronmail') # If cronmail mode, then mail LON-CAPA sys admin.
319: {
320: close(FOUT);
321: # Read in configuration to get e-mail addresses.
322: my $perlvarref = read_conf('loncapa.conf');
323: my %perlvar = %{$perlvarref};
324: undef $perlvarref;
325: delete $perlvar{'lonReceipt'}; # remove since sensitive
326: delete $perlvar{'lonSqlAccess'}; # remove since sensitive
327:
328: # Set metadata for the e-mail.
329: my $emailto = "$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
330: # my $emailto = "sharrison\@users.sourceforge.net";
331: my $subj="LON: $perlvar{'lonHostID'}, RPMS to upgrade";
332: system(
333: 'metasend -b -t '.$emailto.' -s '.
334: "'$subj' -f /tmp/CHECKRPMS.$$ -m text/plain");
335: }
336:
337: print($out <<END) if $mode eq 'html'; # If html mode, print ending tags.
338: </pre>
339: </body>
340: </html>
341: END
342: exit($code);
1.5 harris41 343: }
1.7 harris41 344:
345: sub terminate
346: {
347: my ($mode,$out,$output);
348: if ($mode eq 'html')
349: {
350: print($out <<END);
351: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
352: "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
353: <html>
354: <head>
355: <meta http-equiv="Content-Type" content="text/html; charset=utf-8"></meta>
356: <title>CHECKRPMS ERROR</title>
357: </head>
358: <body bgcolor="white">
359: <h1>CHECKRPMS ERROR</h1>
360: <hr />
361: <p><font color="red"><font size="+1">
362: END
363: }
364: print($out $output);
365: if ($mode eq 'html')
366: {
367: print($out <<END);
368: </font></font></p></body></html>
369: END
370: }
371: }
372:
373:
374: # - read_conf: read LON-CAPA server configuration, especially PerlSetVar values
375: sub read_conf
376: {
377: my (@conf_files)=@_;
378: my %perlvar;
379: my $confdir='/etc/httpd/conf/';
380: foreach my $filename (@conf_files,'loncapa_apache.conf')
381: {
382: open(CONFIG,'<'.$confdir.$filename) or
383: die("Can't read $confdir$filename");
384: while (my $configline=<CONFIG>)
385: {
386: if ($configline =~ /^[^\#]*PerlSetVar/)
387: {
388: my ($unused,$varname,$varvalue)=split(/\s+/,$configline);
389: chomp($varvalue);
390: $perlvar{$varname}=$varvalue;
391: }
392: }
393: close(CONFIG);
394: }
395: my $perlvarref=\%perlvar;
396: return ($perlvarref);
397: }
398:
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