1: # The LearningOnline Network with CAPA
2: # Checksum installed LON-CAPA modules and some configuration files
3: #
4: # $Id: Checksumming.pm,v 1.2 2013/02/02 15:20:02 raeburn Exp $
5: #
6: # The LearningOnline Network with CAPA
7: #
8: # Copyright Michigan State University Board of Trustees
9: #
10: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
11: #
12: # LON-CAPA is free software; you can redistribute it and/or modify
13: # it under the terms of the GNU General Public License as published by
14: # the Free Software Foundation; either version 2 of the License, or
15: # (at your option) any later version.
16: #
17: # LON-CAPA is distributed in the hope that it will be useful,
18: # but WITHOUT ANY WARRANTY; without even the implied warranty of
19: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20: # GNU General Public License for more details.
21: #
22: # You should have received a copy of the GNU General Public License
23: # along with LON-CAPA; if not, write to the Free Software
24: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25: #
26: # /home/httpd/html/adm/gpl.txt
27: #
28: # http://www.lon-capa.org/
29: #
30:
31: package LONCAPA::Checksumming;
32:
33: use strict;
34: use lib '/home/httpd/lib/perl/';
35: use Apache::lonlocal();
36: use Apache::loncommon();
37:
38: sub get_checksums {
39: my ($distro,$londaemons,$lonlib,$lonincludes,$lontabdir) = @_;
40: my $output;
41: my (%versions,%chksums);
42: my $dirh;
43: my $revtag = '$Id:';
44: my @paths;
45: if ($londaemons) {
46: push(@paths,($londaemons.'/*',
47: $londaemons.'/debug/*.pl'));
48: }
49: if ($lonlib) {
50: push(@paths,($lonlib.'/perl/Apache/*.pm',
51: $lonlib.'/perl/Apache/localize/*.pm',
52: $lonlib.'/perl/LONCAPA/*.pm',
53: $lonlib.'/perl/AlgParser.pm',
54: $lonlib.'/perl/LONCAPA.pm',
55: $lonlib.'/perl/Safe.pm',
56: $lonlib.'/perl/*-std.pm',
57: $lonlib.'/perl/HTML/*.pm',
58: $lonlib.'/perl/Safe.pm'));
59: }
60: if ($lonincludes) {
61: push(@paths,$lonincludes.'/*.lcpm');
62: }
63: push(@paths,('/home/httpd/cgi-bin/*.pl','/home/httpd/cgi-bin/*.png'));
64: my $confdir = '/etc/httpd/conf';
65: my $sha = 'SHA1';
66: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
67: $confdir = '/etc/apache2';
68: if (($1 eq 'ubuntu') && ($2 >= 12)) {
69: $sha = 'SHA';
70: }
71: } elsif ($distro =~ /^sles(\d+)$/) {
72: if ($1 >= 10) {
73: $confdir = '/etc/apache2';
74: }
75: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
76: if ($1 >= 10.0) {
77: $confdir = '/etc/apache2';
78: }
79: }
80: push(@paths,("$confdir/loncapa_apache.conf","$confdir/startup.pl"));
81: if ($sha eq 'SHA1') {
82: require Digest::SHA1;
83: } else {
84: require Digest::SHA;
85: }
86: if (@paths) {
87: my $pathstr = join (' ',@paths);
88: if (open($dirh,"grep '$revtag' $pathstr |")) {
89: while (my $line=<$dirh>) {
90: if ($line =~ m{^([^#]+):#\s\$Id:\s[\w.]+,v\s([\d.]+)\s}) {
91: $versions{$1} = $2;
92: }
93: }
94: close($dirh);
95: }
96: foreach my $key (sort(keys(%versions))) {
97: next if ($key =~ /\.lpmlsave$/);
98: my $sum;
99: if (open(my $fh,"<$key")) {
100: binmode $fh;
101: my $sha_obj;
102: if ($sha eq 'SHA') {
103: $sha_obj = Digest::SHA->new();
104: } else {
105: $sha_obj = Digest::SHA1->new();
106: }
107: $sha_obj->addfile($fh);
108: $sum = $sha_obj->hexdigest;
109: close($fh);
110: $chksums{$key} = $sum;
111: }
112: $output .= "$key,$versions{$key},$sum\n";
113: }
114: }
115: if ($lontabdir ne '') {
116: if (open(my $tabfh,">$lontabdir/lonchksums.tab")) {
117: print $tabfh '# Last written: '.localtime(time)."\n";
118: print $tabfh "$output\n";
119: close($tabfh);
120: }
121: }
122: return (\%chksums,\%versions);
123: }
124:
125: sub compare_checksums {
126: my ($target,$lonhost,$version,$serversums,$serverversions) = @_;
127: my ($message,$numchg,$linefeed);
128: if ($target = 'web') {
129: $linefeed = '<br />';
130: } else {
131: $linefeed = "\n";
132: }
133: if ((ref($serversums) eq 'HASH') && (keys(%{$serversums}))) {
134: my $checksums = &Apache::lonnet::fetch_dns_checksums();
135: my (%extra,%missing,%diffs,%stdsums,%stdversions);
136: if (ref($checksums) eq 'HASH') {
137: if (ref($checksums->{'sums'}) eq 'HASH') {
138: %stdsums = %{$checksums->{'sums'}};
139: }
140: if (ref($checksums->{'versions'}) eq 'HASH') {
141: %stdversions = %{$checksums->{'versions'}};
142: }
143: if (keys(%stdsums)) {
144: foreach my $key (keys(%stdsums)) {
145: if (exists($serversums->{$key})) {
146: if ($serversums->{$key} ne $stdsums{$key}) {
147: $diffs{$key} = 1;
148: $numchg ++;
149: }
150: } else {
151: $missing{$key} = 1;
152: $numchg ++;
153: }
154: }
155: foreach my $key (keys(%{$serversums})) {
156: unless (exists($stdsums{$key})) {
157: $extra{$key} = 1;
158: $numchg ++;
159: }
160: }
161: }
162: if ($numchg) {
163: $message =
164: &Apache::lonlocal::mt('[quant,_1,difference was,differences were] found'.
165: ' between LON-CAPA modules installed on your server [_2]'.
166: ' and those expected for the LON-CAPA version you are'.
167: ' currently running.',$numchg,"($lonhost)$linefeed");
168: if ($target eq 'web') {
169: $message = '<p>'.$message.'</p>';
170: } else {
171: $message .= "\n\n";
172: }
173: my (@diffversion,@modified);
174: if (keys(%diffs) > 0) {
175: foreach my $file (sort(keys(%diffs))) {
176: if ($serverversions->{$file} ne $stdversions{$file}) {
177: push(@diffversion,$file);
178: } else {
179: push(@modified,$file);
180: }
181: }
182: if (@diffversion > 0) {
183: my $text =
184: &Apache::lonlocal::mt('The following [quant,_1,file is a,files are]'.
185: ' different version(s) from that expected for LON-CAPA [_2]:',
186: scalar(@diffversion),$version);
187: if ($target eq 'web') {
188: $message .= '<p>'.$text.'</p>'.
189: &Apache::loncommon::start_data_table().
190: &Apache::loncommon::start_data_table_header_row()."\n".
191: '<th>'.&Apache::lonlocal::mt('File').'</th>'."\n".
192: '<th>'.&Apache::lonlocal::mt('Server version').'</th>'."\n".
193: '<th>'.&Apache::lonlocal::mt('Expected version').'</th>'."\n".
194: &Apache::loncommon::end_data_table_header_row()."\n";
195: } else {
196: $message .= "$text\n";
197: }
198: foreach my $file (sort(@diffversion)) {
199: my $revnum = $stdversions{$file};
200: if ($target eq 'web') {
201: $message .= &Apache::loncommon::start_data_table_row().
202: '<td>'.$file.'</td>'."\n".
203: '<td>'.$serverversions->{$file}.'</td>'."\n".
204: '<td>'.$revnum.'</td>'."\n".
205: &Apache::loncommon::end_data_table_row()."\n";
206: } else {
207: $message .= $file.' '.
208: &Apache::lonlocal::mt('(local rev: [_1])',
209: $serverversions->{$file});
210: if ($revnum) {
211: $message .= '; '.
212: &Apache::lonlocal::mt('(expected rev: [_1])',
213: $revnum);
214: }
215: $message .= "\n";
216: }
217: }
218: if ($target eq 'web') {
219: $message .= &Apache::loncommon::end_data_table().'<br />';
220: } else {
221: $message .= "\n";
222: }
223: }
224: if (@modified > 0) {
225: my $text =
226: &Apache::lonlocal::mt('The following [quant,_1,file appears,files appear]'.
227: ' to have been modified locally:',scalar(@modified));
228: if ($target eq 'web') {
229: $message .= '<p>'.$text.'</p>'.
230: &Apache::loncommon::start_data_table().
231: &Apache::loncommon::start_data_table_header_row()."\n".
232: '<th>'.&Apache::lonlocal::mt('File').'</th>'."\n".
233: '<th>'.&Apache::lonlocal::mt('Version').'</th>'."\n".
234: &Apache::loncommon::end_data_table_header_row()."\n";
235: } else {
236: $message .= "$text\n";
237: }
238: foreach my $file (sort(@modified)) {
239: if ($target eq 'web') {
240: $message .= &Apache::loncommon::start_data_table_row()."\n".
241: '<td>'.$file.'</td>'."\n".
242: '<td>'.$serverversions->{$file}.'</td>'."\n".
243: &Apache::loncommon::end_data_table_row()."\n";
244: } else {
245: $message .= $file.' '.
246: &Apache::lonlocal::mt('(local rev: [_1])',
247: $serverversions->{$file}).
248: "\n";
249: }
250: }
251: if ($target eq 'web') {
252: $message .= &Apache::loncommon::end_data_table().'<br />';
253: } else {
254: $message .= "\n";
255: }
256: }
257: }
258: if (keys(%missing) > 0) {
259: my $text =
260: &Apache::lonlocal::mt('The following [quant,_1,local file appears,local files appear]'.
261: ' to be missing:',scalar(keys(%missing)));
262: if ($target eq 'web') {
263: $message .= '<p>'.$text.'</p>'.
264: &Apache::loncommon::start_data_table().
265: &Apache::loncommon::start_data_table_header_row()."\n".
266: '<th>'.&Apache::lonlocal::mt('File').'</th>'."\n".
267: '<th>'.&Apache::lonlocal::mt('Expected version').'</th>'."\n".
268: &Apache::loncommon::end_data_table_header_row()."\n";
269: } else {
270: $message .= "$text\n";
271: }
272: foreach my $file (sort(keys(%missing))) {
273: my $revnum = $stdversions{$file};
274: if ($target eq 'web') {
275: $message .= '<td>'.$file.'</td>'."\n".
276: '<td>'.$revnum.'</td>'."\n".
277: &Apache::loncommon::end_data_table_row()."\n";
278: } else {
279: $message .= $file;
280: if ($revnum) {
281: $message .= ' '.
282: &Apache::lonlocal::mt('(expected rev: [_1])',
283: $revnum);
284: }
285: $message .= "\n";
286: }
287: }
288: if ($target eq 'web') {
289: $message .= &Apache::loncommon::end_data_table();
290: } else {
291: $message .= "\n";
292: }
293: }
294: if (keys(%extra) > 0) {
295: my $text =
296: &Apache::lonlocal::mt('The following [quant,_1,file is,files are]'.
297: ' not required by the release you have installed:',
298: scalar(keys(%extra)));
299: if ($target eq 'web') {
300: $message .= '<p>'.$text.'</p>'.
301: &Apache::loncommon::start_data_table().
302: &Apache::loncommon::start_data_table_header_row()."\n".
303: '<th>'.&Apache::lonlocal::mt('File').'</th>'."\n".
304: '<th>'.&Apache::lonlocal::mt('Version').'</th>'."\n".
305: &Apache::loncommon::end_data_table_header_row()."\n";
306: } else {
307: $message .= "$text\n";
308: }
309: foreach my $file (sort(keys(%extra))) {
310: if ($target eq 'web') {
311: $message .= '<td>'.$file.'</td>'."\n".
312: '<td>'.$serverversions->{$file}.'</td>'."\n".
313: &Apache::loncommon::end_data_table_row()."\n";
314: } else {
315: $message .= $file.' '.
316: &Apache::lonlocal::mt('(local rev: [_1])',
317: $serverversions->{$file}).
318: "\n";
319: }
320: }
321: if ($target eq 'web') {
322: $message .= &Apache::loncommon::end_data_table().'<br />';
323: } else {
324: $message .= "\n";
325: }
326: }
327: } else {
328: $message = &Apache::lonlocal::mt('No differences detected between installed files and files expected for LON-CAPA [_1]',$version);
329: }
330: } else {
331: $message = &Apache::lonlocal::mt('No comparison attempted - failed to retrieve checksums for installed files.');
332: }
333: } else {
334: $message = &Apache::lonlocal::mt('No comparison attempted - failed to retrieve checksums for installed files.');
335: }
336: unless ($message) {
337: $message = &Apache::lonlocal::mt('LON-CAPA module check found no file changes.')."\n";
338: }
339: return ($message,$numchg);
340: }
341:
342: 1;
343:
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