1: # The LearningOnline Network with CAPA
2: # Checksum installed LON-CAPA modules and some configuration files
3: #
4: # $Id: Checksumming.pm,v 1.1 2013/02/02 00:22:43 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);
128: if ((ref($serversums) eq 'HASH') && (keys(%{$serversums}))) {
129: my $checksums = &Apache::lonnet::fetch_dns_checksums();
130: my (%extra,%missing,%diffs,%stdsums,%stdversions);
131: if (ref($checksums) eq 'HASH') {
132: if (ref($checksums->{'sums'}) eq 'HASH') {
133: %stdsums = %{$checksums->{'sums'}};
134: }
135: if (ref($checksums->{'versions'}) eq 'HASH') {
136: %stdversions = %{$checksums->{'versions'}};
137: }
138: if (keys(%stdsums)) {
139: foreach my $key (keys(%stdsums)) {
140: if (exists($serversums->{$key})) {
141: if ($serversums->{$key} ne $stdsums{$key}) {
142: $diffs{$key} = 1;
143: $numchg ++;
144: }
145: } else {
146: $missing{$key} = 1;
147: $numchg ++;
148: }
149: }
150: foreach my $key (keys(%{$serversums})) {
151: unless (exists($stdsums{$key})) {
152: $extra{$key} = 1;
153: $numchg ++;
154: }
155: }
156: }
157: if ($numchg) {
158: $message =
159: &Apache::lonlocal::mt('[quant,_1,difference was,differences were] found'.
160: ' between LON-CAPA modules installed on your server ([_2])'.
161: ' and those expected for the LON-CAPA version ([_3])'.
162: ' which you are running.',$numchg,$lonhost,$version);
163: if ($target eq 'web') {
164: $message = '<p>'.$message.'</p>';
165: } else {
166: $message .= "\n\n";
167: }
168: my (@diffversion,@modified);
169: if (keys(%diffs) > 0) {
170: foreach my $file (sort(keys(%diffs))) {
171: if ($serverversions->{$file} ne $stdversions{$file}) {
172: push(@diffversion,$file);
173: } else {
174: push(@modified,$file);
175: }
176: }
177: if (@diffversion > 0) {
178: my $text =
179: &Apache::lonlocal::mt('The following [quant,_1,local file is a,local files are]'.
180: ' different version(s) from that expected for LON-CAPA [_2]:',
181: scalar(@diffversion),$version);
182: if ($target eq 'web') {
183: $message .= '<p>'.$text.'</p>'.
184: &Apache::loncommon::start_data_table().
185: &Apache::loncommon::start_data_table_header_row()."\n".
186: '<th>'.&Apache::lonlocal::mt('File').'</th>'."\n".
187: '<th>'.&Apache::lonlocal::mt('Server version').'</th>'."\n".
188: '<th>'.&Apache::lonlocal::mt('Expected version').'</th>'."\n".
189: &Apache::loncommon::end_data_table_header_row()."\n";
190: } else {
191: $message .= "$text\n";
192: }
193: foreach my $file (sort(@diffversion)) {
194: my $revnum = $stdversions{$file};
195: if ($target eq 'web') {
196: $message .= &Apache::loncommon::start_data_table_row().
197: '<td>'.$file.'<td>'."\n".
198: '<td>'.$serverversions->{$file}.'</td>'."\n".
199: '<td>'.$revnum.'</td>'."\n".
200: &Apache::loncommon::end_data_table_row()."\n";
201: } else {
202: $message .= $file.' '.
203: &Apache::lonlocal::mt('(local rev: [_1])',
204: $serverversions->{$file});
205: if ($revnum) {
206: $message .= '; '.
207: &Apache::lonlocal::mt('(expected rev: [_1])',
208: $revnum);
209: }
210: $message .= "\n";
211: }
212: }
213: }
214: if (@modified > 0) {
215: my $text =
216: &Apache::lonlocal::mt('The following [quant,_1,file appears,files appear]'.
217: ' to have been modified locally:',scalar(@modified));
218: if ($target eq 'web') {
219: $message .= '<p>'.$text.'</p>'.
220: &Apache::loncommon::start_data_table().
221: &Apache::loncommon::start_data_table_header_row()."\n".
222: '<th>'.&Apache::lonlocal::mt('File').'</th>'."\n".
223: '<th>'.&Apache::lonlocal::mt('Version').'</th>'."\n".
224: &Apache::loncommon::end_data_table_header_row()."\n";
225: } else {
226: $message .= "$text\n";
227: }
228: foreach my $file (sort(@modified)) {
229: if ($target eq 'web') {
230: $message .= &Apache::loncommon::start_data_table_row()."\n".
231: '<td>'.$file.'</td>'."\n".
232: '<td>'.$serverversions->{$file}.'</td>'."\n".
233: &Apache::loncommon::end_data_table_row()."\n";
234: } else {
235: $message .= $file.' '.
236: &Apache::lonlocal::mt('(local rev: [_1])',
237: $serverversions->{$file}).
238: "\n";
239: }
240: }
241: }
242: }
243: if (keys(%missing) > 0) {
244: my $text =
245: &Apache::lonlocal::mt('The following [quant,_1,local file appears,local files appear]'.
246: ' to be missing:',scalar(keys(%missing)));
247: if ($target eq 'web') {
248: $message .= '<p>'.$text.'</p>'.
249: &Apache::loncommon::start_data_table().
250: &Apache::loncommon::start_data_table_header_row()."\n".
251: '<th>'.&Apache::lonlocal::mt('File').'</th>'."\n".
252: '<th>'.&Apache::lonlocal::mt('Expected version').'</th>'."\n".
253: &Apache::loncommon::end_data_table_header_row()."\n";
254: } else {
255: $message .= "$text\n";
256: }
257: foreach my $file (sort(keys(%missing))) {
258: my $revnum = $stdversions{$file};
259: if ($target eq 'web') {
260: $message .= '<td>'.$file.'<td>'."\n".
261: '<td>'.$revnum.'</td>'."\n".
262: &Apache::loncommon::end_data_table_row()."\n";
263: } else {
264: $message .= $file;
265: if ($revnum) {
266: $message .= ' '.
267: &Apache::lonlocal::mt('(expected rev: [_1])',
268: $revnum);
269: }
270: $message .= "\n";
271: }
272: }
273: }
274: if (keys(%extra) > 0) {
275: my $text =
276: &Apache::lonlocal::mt('The following [quant,_1,file is,files are]'.
277: ' not required by the release you have installed:',
278: scalar(keys(%extra)));
279: if ($target eq 'web') {
280: $message .= '<p>'.$text.'</p>'.
281: &Apache::loncommon::start_data_table().
282: &Apache::loncommon::start_data_table_header_row()."\n".
283: '<th>'.&Apache::lonlocal::mt('File').'</th>'."\n".
284: '<th>'.&Apache::lonlocal::mt('Version').'</th>'."\n".
285: &Apache::loncommon::end_data_table_header_row()."\n";
286: } else {
287: $message .= "$text\n";
288: }
289: foreach my $file (sort(keys(%extra))) {
290: if ($target eq 'web') {
291: $message .= '<td>'.$file.'<td>'."\n".
292: '<td>'.$serverversions->{$file}.'</td>'."\n".
293: &Apache::loncommon::end_data_table_row()."\n";
294: } else {
295: $message .= $file.' '.
296: &Apache::lonlocal::mt('(local rev: [_1])',
297: $serverversions->{$file}).
298: "\n";
299: }
300: }
301: }
302: } else {
303: $message = &Apache::lonlocal::mt('No differences detected between installed files and files expected for LON-CAPA [_1]',$version);
304: }
305: } else {
306: $message = &Apache::lonlocal::mt('No comparison attempted - failed to retrieve checksums for installed files.');
307: }
308: } else {
309: $message = &Apache::lonlocal::mt('No comparison attempted - failed to retrieve checksums for installed files.');
310: }
311: unless ($message) {
312: $message = &Apache::lonlocal::mt('LON-CAPA module check found no file changes.')."\n";
313: }
314: return ($message,$numchg);
315: }
316:
317: 1;
318:
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