Annotation of loncom/build/system_dependencies/perltest.pl, revision 1.10
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: #
1.10 ! harris41 5: # $Id: perltest.pl,v 1.9 2002/11/04 01:57:53 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: #
1.6 harris41 19:
20: =pod
21:
22: =head1 SYNOPSIS
23:
24: perl perltest.pl [MODE]
25:
26: This script is located inside the LON-CAPA source code tree.
27: This script is invoked by test-related targets inside
28: F<loncapa/loncom/build/Makefile>.
29:
30: This script is also used as a CGI script and is installed
1.7 harris41 31: at the file location of F</home/httpd/cgi-bin/perltest.pl>.
1.6 harris41 32:
33: MODE, when left blank, the output defaults to 'statusreport' mode.
34: Except however, if $ENV{'QUERY_STRING'} exists, in which case
35: 'html' mode is safely assumed.
36:
37: Here is a complete list of MODEs.
38:
39: =over 4
40:
41: =item html
42:
43: A web page detailing the status of CPAN distributions on a LON-CAPA server
44: (as well as methods for resolution).
45:
46: =item synopsis
47:
48: Plain-text output which just summarizes the status of
49: expected CPAN distributions on a system. (This is what a
50: user sees when running the ./TEST command.)
51:
52: =item statusreport
53:
54: Plain-text output which provides a detailed status report of
55: CPAN distributions on a LON-CAPA server (as well as methods
56: for resolution).
57:
58: =back
59:
60: =head1 DESCRIPTION
61:
62: This program tests the status of perl modules installed on a LON-CAPA system.
63: As with the other LON-CAPA test scripts, when reasonable, I try
64: to avoid importing functionality from other LON-CAPA modules so as to
65: avoid indirectly testing software dependencies.
66:
67: =head2 ORGANIZATION OF THIS PERL SCRIPT
68:
69: The script is organized into the following sections.
70:
71: =over 4
72:
73: =item 1.
74:
75: Process version information of this file.
76:
77: =item 2.
78:
79: Determine output mode for the script.
80:
81: =item 3.
82:
83: Output header information.
84:
85: =item 4.
86:
87: Make sure the perl version is suitably high.
88:
89: =item 5.
90:
91: Make sure we have the find command.
92:
93: =item 6.
94:
95: Scan for all the perl modules present on the filesystem.
96:
97: =item 7.
98:
99: Read in cpan_distributions.txt.
100:
101: =item 8.
102:
103: Loop through all of the needed CPAN distributions and probe the system.
104:
105: =item 9
106:
107: Output a report (dependent on output mode).
108:
109: =item 10
110:
111: Subroutines.
112:
113: B<vers_cmp> - compare two version numbers and see which is greater.
114:
115: B<have_vers> - syntax check the version number and call B<vers_cmp>.
116:
117: =back
118:
119: =head1 STATUS
120:
121: Ratings: 1=horrible 2=poor 3=fair 4=good 5=excellent
122:
123: =over 4
124:
125: =item Organization
126:
127: 5
128:
129: =item Functionality
130:
131: 5
132:
133: =item Has it been tested?
134:
135: 4
136:
137: =back
138:
139: =head1 AUTHOR
140:
141: This software is distributed under the General Public License,
142: version 2, June 1991 (which is the same terms as LON-CAPA).
143:
144: This is free software; you can redistribute it and/or modify
145: it under the terms of the GNU General Public License as published by
146: the Free Software Foundation; either version 2 of the License, or
147: (at your option) any later version.
148:
149: This software is distributed in the hope that it will be useful,
150: but WITHOUT ANY WARRANTY; without even the implied warranty of
151: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
152: GNU General Public License for more details.
153:
154: You should have received a copy of the GNU General Public License
155: along with this software; if not, write to the Free Software
156: Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
157:
158: =cut
159:
160: # =================================== Process version information of this file.
1.10 ! harris41 161: my $VERSION = sprintf("%d.%02d", q$Revision: 1.9 $ =~ /(\d+)\.(\d+)/);
1.6 harris41 162:
163: # ========================== Determine the mode that this script should run in.
164: my $mode;
165: $mode=shift(@ARGV) if @ARGV;
166: unless ( $mode )
167: {
168: $mode = 'statusreport';
169: }
170: if ( defined($ENV{'QUERY_STRING'}) )
171: {
172: $mode = 'html';
173: }
174:
175: # ================================================== Output header information.
176: my $hostname = `hostname`; chomp($hostname);
177: my $date = `date`; chomp($date);
178:
179: # --- html mode blurb
180: if ($mode eq "html") {
181: print(<<END);
182: Content-type: text/html
183:
1.8 harris41 184: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
185: "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
1.6 harris41 186: <html>
187: <head>
1.8 harris41 188: <meta http-equiv="Content-Type" content="text/html; charset=utf-8"></meta>
1.6 harris41 189: <title>CPAN perl status report; $hostname; $date</title>
190: </head>
1.8 harris41 191: <body bgcolor="white">
1.6 harris41 192: <h1>CPAN perl status report</h1>
193: <pre>
194: END
195: }
196:
197: print('Running perltest.pl, version '.$VERSION.'.'."\n");
198: print('(Test status of perl modules installed on a LON-CAPA system).'."\n");
199:
200: # This program is only a "modest" effort to LOOK and see whether
1.1 harris41 201: # necessary perl system dependencies are present. I do not yet
202: # try to actually run tests against each needed perl module.
1.6 harris41 203: # Eventually, all modules will be version-checked, and reasonable
204: # testing implemented.
205:
206: # ================================ Make sure the perl version is suitably high.
207: print('Checking version of perl'."\n");
208: print(`perl --version`);
209: unless (eval("require 5.005"))
210: {
211: die('**** ERROR **** DEPENDENCY FAILURE: require perl version >= 5.005.'.
212: "\n".'Do you even have perl installed on your system?'."\n");
213: }
214: else
215: {
216: print('Perl >= 5.005...okay'."\n");
217: }
218:
219: # ========================================= Make sure we have the find command.
220: my $ret = system("find --version 1>/dev/null");
221: if ($ret)
222: {
223: die('**** ERROR **** DEPENDENCY FAILURE: perltest.pl requires the GNU '.
224: "'find'".' utility.'."\n");
225: }
226: else
227: {
228: print('find command exists...okay'."\n");
229: }
230:
231: # ==================== Scan for all the perl modules present on the filesystem.
232: print('Scanning for perl modules...'."\n");
233: my $big_module_string; # All the modules glued together in a string.
234: my $number_of_modules = 0; # The total number of modules available in system.
235: # --- Build a pattern matching string.
236: foreach my $inc (@INC)
237: {
238: my @m = `find $inc -maxdepth 2000 -type f -name '*.pm'`;
239: foreach my $module (@m)
240: {
241: $big_module_string .= $module;
242: $number_of_modules++;
243: }
244: }
245: # --- Notify user of the number of modules.
246: print('There are '.$number_of_modules.
247: ' perl modules present on your filesystem.'."\n");
248:
249: my %dist_module_hash; # Relate the distributions to their VersionFrom modules.
250: my %module_name_on_filesystem; # Relate module name to filesystem syntax.
251: my %dist_dev_version_hash; # Expected development version of CPAN distribution.
252: my %dist_stable_version_hash; # Expected stable version of CPAN distribution.
253: my %module_dev_version_hash; # development version of versionfrom_module.
254: my %module_stable_version_hash; # stable version of versionfrom_module.
255:
256: # ============================================= Read in cpan_distributions.txt.
257:
258: # A brief description of CPAN (Comprehensive Perl Archive Network):
259: # CPAN software is not released as separate perl modules.
260: # CPAN software is released as "distributions" (also called "dists").
261: # Each distribution consists of multiple perl modules.
262: # For instance, the dist HTML-Tree (http://search.cpan.org/dist/HTML-Tree/)
263: # consists of the modules HTML::AsSubs, HTML::Element, HTML::Element::traverse,
264: # HTML::Parse, HTML::TreeBuilder, and HTML::Tree.
265: # Most (but not all) distributions have versions which are defined
266: # by one of their modules. For the syntax of cpan_distributions.txt,
267: # please read the comments inside cpan_distributions.txt.
268:
269: # Open cpan_distributions.txt.
270: open(IN,'<cpan_distributions.txt') or
271: die('**** ERROR **** Cannot find cpan_distributions.txt'."\n");
272:
273: while(<IN>) # Loop through the lines.
274: {
275: next if /^\#/; # Ignore commented lines.
276: next unless /\S/; # Ignore blank lines.
277:
278: chomp; # Get rid of the newline at the end of the line.
279:
280: # Parse the line.
281: my ($dist_name,$dist_dev_version,$dist_stable_version,$versionfrom_info) =
282: split(/\s+/); # Parse apart the line fields.
283: $versionfrom_info =~ /^(.*)\((.*)\)$/; # Parse apart the versionfrom info.
284: my ($version_module,$version_match) = ($1,$2); # Parse vals into variables.
285:
286: # Calculate DevVersion and StableVersion for the VersionFrom module.
287: my $module_dev_version;
288: my $module_stable_version;
289: if ($version_match eq "*") # There is a dist=module version relationship.
290: {
291: $module_dev_version = $dist_dev_version; # module=dist.
292: $module_stable_version = $dist_stable_version; # module=dist.
293: }
294: else # There is not a dist=module version relationship.
295: {
296: ($module_dev_version,$module_stable_version) =
297: split(/\,/,$version_match); # module set to customized settings.
298: }
299:
300: $dist_module_hash{$dist_name} = $version_module; # The big dist index.
301:
302: # What the module "looks like" on the filesystem.
303: my $version_modulefs = $version_module;
304: $version_modulefs =~ s!::!/!g; $version_modulefs.='.pm';
305: $modulefs_hash{$version_module} = $version_modulefs;
306:
307: # Indexing the expected versions.
308: $module_dev_version_hash{$version_module} = $module_dev_version;
309: $module_stable_version_hash{$version_module} = $module_stable_version;
310: $dist_dev_version_hash{$dist_name} = $dist_dev_version;
311: $dist_stable_version_hash{$dist_name} = $dist_stable_version;
312: }
313: close(IN);
314:
315: # "MISSING" means that no module is present inside the include path.
316: # "OUTDATED" means that a module is present inside the include path but is
317: # an earlier version than expected.
318: # "VERYOKAY" means that the module version is an exact match for the expected
319: # version.
320: # "OKAY" means that the module version is more recent than the expected
321: # version, so things are "probably" okay.... It is still possible
322: # that LON-CAPA is incompatible with the newer distribution version
323: # (corresponding to the module version).
324: my @dev_missing;
325: my @dev_outdated;
326: my @dev_okay;
327: my @dev_veryokay;
328: my @stable_missing;
329: my @stable_outdated;
330: my @stable_okay;
331: my @stable_veryokay;
332:
333: # ===== Loop through all of the needed CPAN distributions and probe the system.
334: foreach my $dist (keys %dist_module_hash)
335: {
336: my $module = $dist_module_hash{$dist};
337: my $fs = $modulefs_hash{$module};
338: my $fsflag = 0;
339: if ($big_module_string =~ /$fs/)
340: {
341: $fsflag = 1;
342: }
343: my ($vok,$vstr);
344: ($vok,$vstr) = have_vers($module,$module_dev_version_hash{$module});
345: # print "fsflag: $fsflag, vok: $vok, vstr: $vstr, fs: $fs\n";
346: if ($fsflag and !$vok and $vstr=~/not found/)
347: {
348: push(@dev_missing,'MISSING '.$dist.' (want distribution version '.
349: $dist_dev_version_hash{$dist}.') ?'."\n");
350: # The question mark indicates there was a pattern match in the
351: # big_module_string which would be unexpected.
352: # There is no usual reason to tell the normal LON-CAPA user about this
353: # question mark. This is just source code magic.
354: }
355: elsif (!$fsflag and !$vok and $vstr=~/not found/)
356: {
357: push(@dev_missing,'MISSING '.$dist.' (want distribution version '.
358: $dist_dev_version_hash{$dist}.')'."\n");
359: }
360: elsif ($fsflag and !$vok and $vstr!~/not found/)
361: {
362: push(@dev_outdated,'OUTDATED '.$dist.' wanted module: v'.
363: $module_dev_version_hash{$module}.'; '.$vstr.' (VERSION_FROM is '.
364: $fs.') want dist version '.$dist_dev_version_hash{$dist}.'.'.
365: "\n");
366: }
367: elsif ($fsflag)
368: {
369: $vstr=~/found v(.*)/;
370: my $vc=$1;
371: if ($vc eq $module_dev_version_hash{$module})
372: {
373: push(@dev_veryokay,'VERYOKAY '.$dist.' wanted: v'.
374: $module_dev_version_hash{$module}.'; '.$vstr.
375: ' (VERSION_FROM is '.$fs.') want dist version '.
376: $dist_dev_version_hash{$dist}."\n");
377: }
378: else
379: {
380: push(@dev_okay,'OKAY '.$dist.' wanted: v'.
381: $module_dev_version_hash{$module}.'; '.$vstr.
382: ' (VERSION_FROM is '.$fs.').'."\n");
383: }
384: }
385: ($vok,$vstr) = have_vers($module,$module_stable_version_hash{$module});
386: if ($fsflag and !$vok and $vstr=~/not found/)
387: {
388: push(@stable_missing,'MISSING '.$dist.' (want distribution version '.
389: $dist_stable_version_hash{$dist}.') ?'."\n");
390: # The question mark indicates there was a pattern match in the
391: # big_module_string which would be unexpected.
392: # There is no usual reason to tell the normal LON-CAPA user about this
393: # question mark. This is just source code magic.
394: }
395: elsif (!$fsflag and !$vok and $vstr=~/not found/)
396: {
397: push(@stable_missing,'MISSING '.$dist.' (want distribution version '.
398: $dist_stable_version_hash{$dist}.')'."\n");
399: }
400: elsif ($fsflag and !$vok and $vstr!~/not found/)
401: {
402: push(@stable_outdated,'OUTDATED '.$dist.' wanted module: v'.
403: $module_stable_version_hash{$module}.'; '.$vstr.
404: ' (VERSION_FROM is '.$fs.') want dist version '.
405: $dist_stable_version_hash{$dist}.'.'."\n");
406: }
407: elsif ($fsflag)
408: {
409: $vstr=~/found v(.*)/;
410: my $vc=$1;
411: if ($vc eq $module_stable_version_hash{$module})
412: {
413: push(@stable_veryokay,'VERYOKAY '.$dist.' wanted: v'.
414: $module_stable_version_hash{$module}.'; '.$vstr.
415: ' (VERSION_FROM is '.$fs.') want dist version '.
416: $dist_stable_version_hash{$dist}."\n");
417: }
418: else
419: {
420: push(@stable_okay,'OKAY '.$dist.' wanted: v'.
421: $module_stable_version_hash{$module}.'; '.$vstr.
422: ' (VERSION_FROM is '.$fs.').'."\n");
423: }
424: }
425: }
1.1 harris41 426:
1.6 harris41 427: print("\n".'SYNOPSIS'."\n");
428:
429: # ========================================================== The stable report.
430: print('**** STABLE REPORT (what a production server should worry about)'."\n");
1.9 harris41 431: if (@stable_missing)
432: {
1.6 harris41 433: print('There are '.scalar(@stable_missing).' CPAN distributions missing '.
434: 'from this LON-CAPA system.'."\n");
1.9 harris41 435: }
436: else
437: {
1.6 harris41 438: print('All perl modules needed by LON-CAPA appear to be present.'."\n");
1.9 harris41 439: }
440: if (@stable_outdated)
441: {
1.6 harris41 442: print(scalar(@stable_outdated).' CPAN distributions are out-dated '.
443: 'on this LON-CAPA system.'."\n");
1.9 harris41 444: }
445: if (@stable_veryokay)
446: {
1.6 harris41 447: print(scalar(@stable_veryokay).' CPAN distributions are an exact match '.
448: '(based on version number).'."\n");
449: # print @stable_veryokay;
1.9 harris41 450: }
451: if (@stable_okay)
452: {
1.6 harris41 453: print(scalar(@stable_okay).' CPAN dists have a version number '.
454: 'higher than expected'.
455: ' (probably okay).'. "\n");
1.9 harris41 456: }
1.6 harris41 457: print("\n");
1.1 harris41 458:
1.6 harris41 459: # ===================================================== The development report.
460: print('**** DEVELOPMENT REPORT (do not worry about this unless you are a'.
461: ' coder)'."\n");
1.9 harris41 462: if (@dev_missing)
463: {
1.6 harris41 464: print('There are '.scalar(@dev_missing).' CPAN distributions missing '.
465: 'from this LON-CAPA system.'."\n");
1.9 harris41 466: }
467: else
468: {
1.6 harris41 469: print('All perl modules needed by LON-CAPA appear to be present.'."\n");
1.9 harris41 470: }
471: if (@dev_outdated)
472: {
1.6 harris41 473: print(scalar(@dev_outdated).' CPAN distributions are out-dated '.
474: 'on this LON-CAPA system.'."\n");
1.9 harris41 475: }
476: if (@dev_veryokay)
477: {
1.6 harris41 478: print(scalar(@dev_veryokay).' CPAN distributions are an exact match '.
479: '(based on version number).'."\n");
480: # print @dev_veryokay;
1.9 harris41 481: }
482: if (@dev_okay)
483: {
1.6 harris41 484: print(scalar(@stable_okay).' CPAN dists have a version number '.
485: 'higher than expected'.
486: ' (probably okay).'. "\n");
1.9 harris41 487: }
1.6 harris41 488:
1.9 harris41 489: my $detailstream;
490: if ($mode eq 'synopsis')
491: {
1.6 harris41 492: print("\n".'**** NOTE ****'."\n".
493: 'After everything completes, please view the CPAN_STATUS_REPORT'.
494: ' file for more '."\n".'information on resolving your perl modules.'.
495: "\n");
496:
497: print('* HIT RETURN WHEN READY TO CONTINUE *'."\n");
498: my $returnkey=<>;
1.9 harris41 499: open(OUT,'>CPAN_STATUS_REPORT');
500: $detailstream=\*OUT;
501: }
502: else
503: {
504: $detailstream=\*STDOUT;
505: }
506: print($detailstream
507: "\n".'DETAILED STATUS REPORT'."\n"); # Header of status report.
1.6 harris41 508:
1.9 harris41 509: # Print advisory notices.
510: print($detailstream
511: "\n".'(Consult loncapa/doc/otherfiles/perl_modules.txt for '.
512: 'information on'."\n".
513: ' manual build instructions.)'."\n");
514: print($detailstream
515: "\n".'(**** IMPORTANT NOTICE **** HTML-Parser needs to be patched '.
516: "\n".' as described in loncapa/doc/otherfiles/perl_modules.txt)'.
517: "\n");
518:
519: print($detailstream
520: "\n".'For manual installation of CPAN distributions, visit'."\n".
521: 'http://search.cpan.org/dist/DistName'."\n".
522: 'where DistName is something like "HTML-Parser" or "libwww-perl".'.
523: "\n");
524:
525: print($detailstream
526: "\n".'For automatic installation of CPAN distributions, visit'."\n".
527: 'http://install.lon-capa.org/resources/cpanauto/DistName.bin'."\n".
528: 'where DistName.bin is something like "HTML-Parser.bin" or '.
529: '"libwww-perl.bin".'."\n");
530:
531: # Print detailed report of stable.
532: print($detailstream
533: "\n".'STABLE (DETAILED REPORT)'."\n");
534: print $detailstream @stable_missing;
535: print $detailstream @stable_outdated;
536: print $detailstream @stable_veryokay;
537: print $detailstream @stable_okay;
538: print($detailstream "\n".'DEVELOPMENT (DETAILED REPORT)'."\n");
539: print $detailstream @dev_missing;
540: print $detailstream @dev_outdated;
541: print $detailstream @dev_veryokay;
542: print $detailstream @dev_okay;
1.6 harris41 543:
1.9 harris41 544: if ($mode eq "html")
545: {
1.6 harris41 546: print(<<END);
547: </pre>
548: </body>
549: </html>
1.5 harris41 550: END
1.9 harris41 551: }
1.6 harris41 552:
553: # ================================================================ Subroutines.
554: # Note that "vers_cmp" and "have_vers" are adapted from a bugzilla version 2.16
555: # "checksetup.pl" script.
556:
557: # ------------ vers_cmp : compare two version numbers and see which is greater.
558: # vers_cmp is adapted from Sort::Versions 1.3 1996/07/11 13:37:00 kjahds,
559: # which is not included with Perl by default, hence the need to copy it here.
560: # Seems silly to require it when this is the only place we need it...
561: sub vers_cmp
562: {
563: if (@_ < 2) { die "not enough parameters for vers_cmp" }
564: if (@_ > 2) { die "too many parameters for vers_cmp" }
565: my ($a, $b) = @_;
566: my (@A) = ($a =~ /(\.|\d+|[^\.\d]+)/g);
567: my (@B) = ($b =~ /(\.|\d+|[^\.\d]+)/g);
568: my ($A,$B);
569: while (@A and @B)
570: {
571: $A = shift @A;
572: $B = shift @B;
573: if ($A eq "." and $B eq ".")
574: {
575: next;
576: }
577: elsif ( $A eq "." )
578: {
579: return -1;
580: }
581: elsif ( $B eq "." )
582: {
583: return 1;
584: }
585: elsif ($A =~ /^\d+$/ and $B =~ /^\d+$/)
586: {
587: return $A <=> $B if $A <=> $B;
588: }
589: else
590: {
591: $A = uc $A;
592: $B = uc $B;
593: return $A cmp $B if $A cmp $B;
594: }
595: }
596: @A <=> @B;
597: }
598:
599: # --------------- have_vers: syntax check the version number and call vers_cmp.
600: # This was originally clipped from the libnet Makefile.PL, adapted here to
601: # use the above vers_cmp routine for accurate version checking.
602: sub have_vers
603: {
604: my ($pkg, $wanted) = @_;
605: my ($msg, $vnum, $vstr);
606: no strict 'refs';
607: # printf("Checking for %15s %-9s ", $pkg, !$wanted?'(any)':"(v$wanted)");
608:
609: eval { my $p; ($p = $pkg . ".pm") =~ s!::!/!g; require $p; };
610:
611: $vnum = ${"${pkg}::VERSION"} || ${"${pkg}::Version"} || 0;
612: $vnum = -1 if $@;
613:
614: if ($vnum eq "-1") # string compare just in case it's non-numeric
615: {
616: $vstr = "not found";
617: }
618: elsif (vers_cmp($vnum,"0") > -1)
619: {
620: $vstr = "found v$vnum";
621: }
622: else
623: {
624: $vstr = "found unknown version";
625: }
626:
627: my $vok = (vers_cmp($vnum,$wanted) > -1);
628: # print ((($vok) ? "ok: " : " "), "$vstr\n");
629: return ($vok,$vstr);
630: }
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