Annotation of loncom/build/system_dependencies/perltest.pl, revision 1.7
1.1 harris41 1: #!/usr/bin/perl
2:
1.6 harris41 3: # perltest.pl - script to test the status of perl modules on a LON-CAPA system
1.1 harris41 4: #
1.7 ! harris41 5: # $Id: perltest.pl,v 1.6 2002/08/14 16:52:41 harris41 Exp $
1.6 harris41 6: #
7: ###
8:
9: =pod
10:
11: =head1 NAME
12:
13: B<perltest.pl> - Test status of perl modules installed on a LON-CAPA system.
14:
15: =cut
16:
17: # Written to help LON-CAPA (The LearningOnline Network with CAPA)
1.1 harris41 18: #
19: # YEAR=2001
20: # 9/30 Scott Harrison
1.6 harris41 21: # YEAR 2002 and onwards
22: # Scott Harrison, sharrison@users.sourceforge.net
23:
24: =pod
25:
26: =head1 SYNOPSIS
27:
28: perl perltest.pl [MODE]
29:
30: This script is located inside the LON-CAPA source code tree.
31: This script is invoked by test-related targets inside
32: F<loncapa/loncom/build/Makefile>.
33:
34: This script is also used as a CGI script and is installed
1.7 ! harris41 35: at the file location of F</home/httpd/cgi-bin/perltest.pl>.
1.6 harris41 36:
37: MODE, when left blank, the output defaults to 'statusreport' mode.
38: Except however, if $ENV{'QUERY_STRING'} exists, in which case
39: 'html' mode is safely assumed.
40:
41: Here is a complete list of MODEs.
42:
43: =over 4
44:
45: =item html
46:
47: A web page detailing the status of CPAN distributions on a LON-CAPA server
48: (as well as methods for resolution).
49:
50: =item synopsis
51:
52: Plain-text output which just summarizes the status of
53: expected CPAN distributions on a system. (This is what a
54: user sees when running the ./TEST command.)
55:
56: =item statusreport
57:
58: Plain-text output which provides a detailed status report of
59: CPAN distributions on a LON-CAPA server (as well as methods
60: for resolution).
61:
62: =back
63:
64: =head1 DESCRIPTION
65:
66: This program tests the status of perl modules installed on a LON-CAPA system.
67: As with the other LON-CAPA test scripts, when reasonable, I try
68: to avoid importing functionality from other LON-CAPA modules so as to
69: avoid indirectly testing software dependencies.
70:
71: =head2 ORGANIZATION OF THIS PERL SCRIPT
72:
73: The script is organized into the following sections.
74:
75: =over 4
76:
77: =item 1.
78:
79: Process version information of this file.
80:
81: =item 2.
82:
83: Determine output mode for the script.
84:
85: =item 3.
86:
87: Output header information.
88:
89: =item 4.
90:
91: Make sure the perl version is suitably high.
92:
93: =item 5.
94:
95: Make sure we have the find command.
96:
97: =item 6.
98:
99: Scan for all the perl modules present on the filesystem.
100:
101: =item 7.
102:
103: Read in cpan_distributions.txt.
104:
105: =item 8.
106:
107: Loop through all of the needed CPAN distributions and probe the system.
108:
109: =item 9
110:
111: Output a report (dependent on output mode).
112:
113: =item 10
114:
115: Subroutines.
116:
117: B<vers_cmp> - compare two version numbers and see which is greater.
118:
119: B<have_vers> - syntax check the version number and call B<vers_cmp>.
120:
121: =back
122:
123: =head1 STATUS
124:
125: Ratings: 1=horrible 2=poor 3=fair 4=good 5=excellent
126:
127: =over 4
128:
129: =item Organization
130:
131: 5
132:
133: =item Functionality
134:
135: 5
136:
137: =item Has it been tested?
138:
139: 4
140:
141: =back
142:
143: =head1 AUTHOR
144:
145: Scott Harrison, sharrison@users.sourceforge.net, 2001, 2002
146:
147: This software is distributed under the General Public License,
148: version 2, June 1991 (which is the same terms as LON-CAPA).
149:
150: This is free software; you can redistribute it and/or modify
151: it under the terms of the GNU General Public License as published by
152: the Free Software Foundation; either version 2 of the License, or
153: (at your option) any later version.
154:
155: This software is distributed in the hope that it will be useful,
156: but WITHOUT ANY WARRANTY; without even the implied warranty of
157: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
158: GNU General Public License for more details.
159:
160: You should have received a copy of the GNU General Public License
161: along with this software; if not, write to the Free Software
162: Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
163:
164: =cut
165:
166: # =================================== Process version information of this file.
1.7 ! harris41 167: my $VERSION = sprintf("%d.%02d", q$Revision: 1.6 $ =~ /(\d+)\.(\d+)/);
1.6 harris41 168:
169: # ========================== Determine the mode that this script should run in.
170: my $mode;
171: $mode=shift(@ARGV) if @ARGV;
172: unless ( $mode )
173: {
174: $mode = 'statusreport';
175: }
176: if ( defined($ENV{'QUERY_STRING'}) )
177: {
178: $mode = 'html';
179: }
180:
181: # ================================================== Output header information.
182: my $hostname = `hostname`; chomp($hostname);
183: my $date = `date`; chomp($date);
184:
185: # --- html mode blurb
186: if ($mode eq "html") {
187: print(<<END);
188: Content-type: text/html
189:
190: <html>
191: <head>
192: <title>CPAN perl status report; $hostname; $date</title>
193: </head>
194: <body bgcolor="#ffffff">
195: <h1>CPAN perl status report</h1>
196: <pre>
197: END
198: }
199:
200: print('Running perltest.pl, version '.$VERSION.'.'."\n");
201: print('(Test status of perl modules installed on a LON-CAPA system).'."\n");
202:
203: # This program is only a "modest" effort to LOOK and see whether
1.1 harris41 204: # necessary perl system dependencies are present. I do not yet
205: # try to actually run tests against each needed perl module.
1.6 harris41 206: # Eventually, all modules will be version-checked, and reasonable
207: # testing implemented.
208:
209: # ================================ Make sure the perl version is suitably high.
210: print('Checking version of perl'."\n");
211: print(`perl --version`);
212: unless (eval("require 5.005"))
213: {
214: die('**** ERROR **** DEPENDENCY FAILURE: require perl version >= 5.005.'.
215: "\n".'Do you even have perl installed on your system?'."\n");
216: }
217: else
218: {
219: print('Perl >= 5.005...okay'."\n");
220: }
221:
222: # ========================================= Make sure we have the find command.
223: my $ret = system("find --version 1>/dev/null");
224: if ($ret)
225: {
226: die('**** ERROR **** DEPENDENCY FAILURE: perltest.pl requires the GNU '.
227: "'find'".' utility.'."\n");
228: }
229: else
230: {
231: print('find command exists...okay'."\n");
232: }
233:
234: # ==================== Scan for all the perl modules present on the filesystem.
235: print('Scanning for perl modules...'."\n");
236: my $big_module_string; # All the modules glued together in a string.
237: my $number_of_modules = 0; # The total number of modules available in system.
238: # --- Build a pattern matching string.
239: foreach my $inc (@INC)
240: {
241: my @m = `find $inc -maxdepth 2000 -type f -name '*.pm'`;
242: foreach my $module (@m)
243: {
244: $big_module_string .= $module;
245: $number_of_modules++;
246: }
247: }
248: # --- Notify user of the number of modules.
249: print('There are '.$number_of_modules.
250: ' perl modules present on your filesystem.'."\n");
251:
252: my %dist_module_hash; # Relate the distributions to their VersionFrom modules.
253: my %module_name_on_filesystem; # Relate module name to filesystem syntax.
254: my %dist_dev_version_hash; # Expected development version of CPAN distribution.
255: my %dist_stable_version_hash; # Expected stable version of CPAN distribution.
256: my %module_dev_version_hash; # development version of versionfrom_module.
257: my %module_stable_version_hash; # stable version of versionfrom_module.
258:
259: # ============================================= Read in cpan_distributions.txt.
260:
261: # A brief description of CPAN (Comprehensive Perl Archive Network):
262: # CPAN software is not released as separate perl modules.
263: # CPAN software is released as "distributions" (also called "dists").
264: # Each distribution consists of multiple perl modules.
265: # For instance, the dist HTML-Tree (http://search.cpan.org/dist/HTML-Tree/)
266: # consists of the modules HTML::AsSubs, HTML::Element, HTML::Element::traverse,
267: # HTML::Parse, HTML::TreeBuilder, and HTML::Tree.
268: # Most (but not all) distributions have versions which are defined
269: # by one of their modules. For the syntax of cpan_distributions.txt,
270: # please read the comments inside cpan_distributions.txt.
271:
272: # Open cpan_distributions.txt.
273: open(IN,'<cpan_distributions.txt') or
274: die('**** ERROR **** Cannot find cpan_distributions.txt'."\n");
275:
276: while(<IN>) # Loop through the lines.
277: {
278: next if /^\#/; # Ignore commented lines.
279: next unless /\S/; # Ignore blank lines.
280:
281: chomp; # Get rid of the newline at the end of the line.
282:
283: # Parse the line.
284: my ($dist_name,$dist_dev_version,$dist_stable_version,$versionfrom_info) =
285: split(/\s+/); # Parse apart the line fields.
286: $versionfrom_info =~ /^(.*)\((.*)\)$/; # Parse apart the versionfrom info.
287: my ($version_module,$version_match) = ($1,$2); # Parse vals into variables.
288:
289: # Calculate DevVersion and StableVersion for the VersionFrom module.
290: my $module_dev_version;
291: my $module_stable_version;
292: if ($version_match eq "*") # There is a dist=module version relationship.
293: {
294: $module_dev_version = $dist_dev_version; # module=dist.
295: $module_stable_version = $dist_stable_version; # module=dist.
296: }
297: else # There is not a dist=module version relationship.
298: {
299: ($module_dev_version,$module_stable_version) =
300: split(/\,/,$version_match); # module set to customized settings.
301: }
302:
303: $dist_module_hash{$dist_name} = $version_module; # The big dist index.
304:
305: # What the module "looks like" on the filesystem.
306: my $version_modulefs = $version_module;
307: $version_modulefs =~ s!::!/!g; $version_modulefs.='.pm';
308: $modulefs_hash{$version_module} = $version_modulefs;
309:
310: # Indexing the expected versions.
311: $module_dev_version_hash{$version_module} = $module_dev_version;
312: $module_stable_version_hash{$version_module} = $module_stable_version;
313: $dist_dev_version_hash{$dist_name} = $dist_dev_version;
314: $dist_stable_version_hash{$dist_name} = $dist_stable_version;
315: }
316: close(IN);
317:
318: # "MISSING" means that no module is present inside the include path.
319: # "OUTDATED" means that a module is present inside the include path but is
320: # an earlier version than expected.
321: # "VERYOKAY" means that the module version is an exact match for the expected
322: # version.
323: # "OKAY" means that the module version is more recent than the expected
324: # version, so things are "probably" okay.... It is still possible
325: # that LON-CAPA is incompatible with the newer distribution version
326: # (corresponding to the module version).
327: my @dev_missing;
328: my @dev_outdated;
329: my @dev_okay;
330: my @dev_veryokay;
331: my @stable_missing;
332: my @stable_outdated;
333: my @stable_okay;
334: my @stable_veryokay;
335:
336: # ===== Loop through all of the needed CPAN distributions and probe the system.
337: foreach my $dist (keys %dist_module_hash)
338: {
339: my $module = $dist_module_hash{$dist};
340: my $fs = $modulefs_hash{$module};
341: my $fsflag = 0;
342: if ($big_module_string =~ /$fs/)
343: {
344: $fsflag = 1;
345: }
346: my ($vok,$vstr);
347: ($vok,$vstr) = have_vers($module,$module_dev_version_hash{$module});
348: # print "fsflag: $fsflag, vok: $vok, vstr: $vstr, fs: $fs\n";
349: if ($fsflag and !$vok and $vstr=~/not found/)
350: {
351: push(@dev_missing,'MISSING '.$dist.' (want distribution version '.
352: $dist_dev_version_hash{$dist}.') ?'."\n");
353: # The question mark indicates there was a pattern match in the
354: # big_module_string which would be unexpected.
355: # There is no usual reason to tell the normal LON-CAPA user about this
356: # question mark. This is just source code magic.
357: }
358: elsif (!$fsflag and !$vok and $vstr=~/not found/)
359: {
360: push(@dev_missing,'MISSING '.$dist.' (want distribution version '.
361: $dist_dev_version_hash{$dist}.')'."\n");
362: }
363: elsif ($fsflag and !$vok and $vstr!~/not found/)
364: {
365: push(@dev_outdated,'OUTDATED '.$dist.' wanted module: v'.
366: $module_dev_version_hash{$module}.'; '.$vstr.' (VERSION_FROM is '.
367: $fs.') want dist version '.$dist_dev_version_hash{$dist}.'.'.
368: "\n");
369: }
370: elsif ($fsflag)
371: {
372: $vstr=~/found v(.*)/;
373: my $vc=$1;
374: if ($vc eq $module_dev_version_hash{$module})
375: {
376: push(@dev_veryokay,'VERYOKAY '.$dist.' wanted: v'.
377: $module_dev_version_hash{$module}.'; '.$vstr.
378: ' (VERSION_FROM is '.$fs.') want dist version '.
379: $dist_dev_version_hash{$dist}."\n");
380: }
381: else
382: {
383: push(@dev_okay,'OKAY '.$dist.' wanted: v'.
384: $module_dev_version_hash{$module}.'; '.$vstr.
385: ' (VERSION_FROM is '.$fs.').'."\n");
386: }
387: }
388: ($vok,$vstr) = have_vers($module,$module_stable_version_hash{$module});
389: if ($fsflag and !$vok and $vstr=~/not found/)
390: {
391: push(@stable_missing,'MISSING '.$dist.' (want distribution version '.
392: $dist_stable_version_hash{$dist}.') ?'."\n");
393: # The question mark indicates there was a pattern match in the
394: # big_module_string which would be unexpected.
395: # There is no usual reason to tell the normal LON-CAPA user about this
396: # question mark. This is just source code magic.
397: }
398: elsif (!$fsflag and !$vok and $vstr=~/not found/)
399: {
400: push(@stable_missing,'MISSING '.$dist.' (want distribution version '.
401: $dist_stable_version_hash{$dist}.')'."\n");
402: }
403: elsif ($fsflag and !$vok and $vstr!~/not found/)
404: {
405: push(@stable_outdated,'OUTDATED '.$dist.' wanted module: v'.
406: $module_stable_version_hash{$module}.'; '.$vstr.
407: ' (VERSION_FROM is '.$fs.') want dist version '.
408: $dist_stable_version_hash{$dist}.'.'."\n");
409: }
410: elsif ($fsflag)
411: {
412: $vstr=~/found v(.*)/;
413: my $vc=$1;
414: if ($vc eq $module_stable_version_hash{$module})
415: {
416: push(@stable_veryokay,'VERYOKAY '.$dist.' wanted: v'.
417: $module_stable_version_hash{$module}.'; '.$vstr.
418: ' (VERSION_FROM is '.$fs.') want dist version '.
419: $dist_stable_version_hash{$dist}."\n");
420: }
421: else
422: {
423: push(@stable_okay,'OKAY '.$dist.' wanted: v'.
424: $module_stable_version_hash{$module}.'; '.$vstr.
425: ' (VERSION_FROM is '.$fs.').'."\n");
426: }
427: }
428: }
1.1 harris41 429:
1.6 harris41 430: print("\n".'SYNOPSIS'."\n");
431:
432: # ========================================================== The stable report.
433: print('**** STABLE REPORT (what a production server should worry about)'."\n");
434: if (@stable_missing) {
435: print('There are '.scalar(@stable_missing).' CPAN distributions missing '.
436: 'from this LON-CAPA system.'."\n");
437: }
438: else {
439: print('All perl modules needed by LON-CAPA appear to be present.'."\n");
440: }
441: if (@stable_outdated) {
442: print(scalar(@stable_outdated).' CPAN distributions are out-dated '.
443: 'on this LON-CAPA system.'."\n");
1.1 harris41 444: }
1.6 harris41 445: if (@stable_veryokay) {
446: print(scalar(@stable_veryokay).' CPAN distributions are an exact match '.
447: '(based on version number).'."\n");
448: # print @stable_veryokay;
449: }
450: if (@stable_okay) {
451: print(scalar(@stable_okay).' CPAN dists have a version number '.
452: 'higher than expected'.
453: ' (probably okay).'. "\n");
454: }
455: print("\n");
1.1 harris41 456:
1.6 harris41 457: # ===================================================== The development report.
458: print('**** DEVELOPMENT REPORT (do not worry about this unless you are a'.
459: ' coder)'."\n");
460: if (@dev_missing) {
461: print('There are '.scalar(@dev_missing).' CPAN distributions missing '.
462: 'from this LON-CAPA system.'."\n");
1.2 harris41 463: }
1.5 harris41 464: else {
1.6 harris41 465: print('All perl modules needed by LON-CAPA appear to be present.'."\n");
466: }
467: if (@dev_outdated) {
468: print(scalar(@dev_outdated).' CPAN distributions are out-dated '.
469: 'on this LON-CAPA system.'."\n");
470: }
471: if (@dev_veryokay) {
472: print(scalar(@dev_veryokay).' CPAN distributions are an exact match '.
473: '(based on version number).'."\n");
474: # print @dev_veryokay;
475: }
476: if (@dev_okay) {
477: print(scalar(@stable_okay).' CPAN dists have a version number '.
478: 'higher than expected'.
479: ' (probably okay).'. "\n");
480: }
481:
482: if ($mode eq 'synopsis') {
483: print("\n".'**** NOTE ****'."\n".
484: 'After everything completes, please view the CPAN_STATUS_REPORT'.
485: ' file for more '."\n".'information on resolving your perl modules.'.
486: "\n");
487:
488: print('* HIT RETURN WHEN READY TO CONTINUE *'."\n");
489: my $returnkey=<>;
490: }
491: else {
492: print("\n".'DETAILED STATUS REPORT'."\n"); # Header of status report.
493:
494: # Print advisory notices.
495: print("\n".'(Consult loncapa/doc/otherfiles/perl_modules.txt for '.
496: 'information on'."\n".
497: ' manual build instructions.)'."\n");
498: print("\n".'(**** IMPORTANT NOTICE **** HTML-Parser needs to be patched '.
499: "\n".' as described in loncapa/doc/otherfiles/perl_modules.txt)'.
500: "\n");
501:
502: print("\n".'For manual installation of CPAN distributions, visit'."\n".
503: 'http://search.cpan.org/dist/DistName'."\n".
504: 'where DistName is something like "HTML-Parser" or "libwww-perl".'.
505: "\n");
506:
507: print("\n".'For automatic installation of CPAN distributions, visit'."\n".
508: 'http://install.lon-capa.org/resources/cpanauto/DistName.bin'."\n".
509: 'where DistName.bin is something like "HTML-Parser.bin" or '.
510: '"libwww-perl.bin".'."\n");
511:
512: # Print detailed report of stable.
513: print("\n".'STABLE (DETAILED REPORT)'."\n");
514: print @stable_missing;
515: print @stable_outdated;
516: print @stable_veryokay;
517: print @stable_okay;
518: print("\n".'DEVELOPMENT (DETAILED REPORT)'."\n");
519: print @dev_missing;
520: print @dev_outdated;
521: print @dev_veryokay;
522: print @dev_okay;
523: }
524:
525: if ($mode eq "html") {
526: print(<<END);
527: </pre>
528: </body>
529: </html>
1.5 harris41 530: END
531: }
1.6 harris41 532:
533: # ================================================================ Subroutines.
534: # Note that "vers_cmp" and "have_vers" are adapted from a bugzilla version 2.16
535: # "checksetup.pl" script.
536:
537: # ------------ vers_cmp : compare two version numbers and see which is greater.
538: # vers_cmp is adapted from Sort::Versions 1.3 1996/07/11 13:37:00 kjahds,
539: # which is not included with Perl by default, hence the need to copy it here.
540: # Seems silly to require it when this is the only place we need it...
541: sub vers_cmp
542: {
543: if (@_ < 2) { die "not enough parameters for vers_cmp" }
544: if (@_ > 2) { die "too many parameters for vers_cmp" }
545: my ($a, $b) = @_;
546: my (@A) = ($a =~ /(\.|\d+|[^\.\d]+)/g);
547: my (@B) = ($b =~ /(\.|\d+|[^\.\d]+)/g);
548: my ($A,$B);
549: while (@A and @B)
550: {
551: $A = shift @A;
552: $B = shift @B;
553: if ($A eq "." and $B eq ".")
554: {
555: next;
556: }
557: elsif ( $A eq "." )
558: {
559: return -1;
560: }
561: elsif ( $B eq "." )
562: {
563: return 1;
564: }
565: elsif ($A =~ /^\d+$/ and $B =~ /^\d+$/)
566: {
567: return $A <=> $B if $A <=> $B;
568: }
569: else
570: {
571: $A = uc $A;
572: $B = uc $B;
573: return $A cmp $B if $A cmp $B;
574: }
575: }
576: @A <=> @B;
577: }
578:
579: # --------------- have_vers: syntax check the version number and call vers_cmp.
580: # This was originally clipped from the libnet Makefile.PL, adapted here to
581: # use the above vers_cmp routine for accurate version checking.
582: sub have_vers
583: {
584: my ($pkg, $wanted) = @_;
585: my ($msg, $vnum, $vstr);
586: no strict 'refs';
587: # printf("Checking for %15s %-9s ", $pkg, !$wanted?'(any)':"(v$wanted)");
588:
589: eval { my $p; ($p = $pkg . ".pm") =~ s!::!/!g; require $p; };
590:
591: $vnum = ${"${pkg}::VERSION"} || ${"${pkg}::Version"} || 0;
592: $vnum = -1 if $@;
593:
594: if ($vnum eq "-1") # string compare just in case it's non-numeric
595: {
596: $vstr = "not found";
597: }
598: elsif (vers_cmp($vnum,"0") > -1)
599: {
600: $vstr = "found v$vnum";
601: }
602: else
603: {
604: $vstr = "found unknown version";
605: }
606:
607: my $vok = (vers_cmp($vnum,$wanted) > -1);
608: # print ((($vok) ? "ok: " : " "), "$vstr\n");
609: return ($vok,$vstr);
610: }
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