1: # The LearningOnline Network with CAPA
2: # Publication Handler
3: #
4: # $Id: lonpublisher.pm,v 1.132 2003/09/16 21:30:28 albertel Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: #
29: # (TeX Content Handler
30: #
31: # 05/29/00,05/30,10/11 Gerd Kortemeyer)
32: #
33: # 11/28,11/29,11/30,12/01,12/02,12/04,12/23 Gerd Kortemeyer
34: # 03/23 Guy Albertelli
35: # 03/24,03/29,04/03 Gerd Kortemeyer
36: # 05/03,05/05,05/07 Gerd Kortemeyer
37: # 06/23,08/07,08/11,8/13,8/17,8/18,8/24,9/26,10/16 Gerd Kortemeyer
38: # 12/04,12/05 Guy Albertelli
39: # 12/05 Gerd Kortemeyer
40: # 12/05 Guy Albertelli
41: # 12/06,12/07 Gerd Kortemeyer
42: # 12/25 Gerd Kortemeyer
43: # YEAR=2002
44: # 1/17 Gerd Kortemeyer
45: #
46: ###
47:
48: ###############################################################################
49: ## ##
50: ## ORGANIZATION OF THIS PERL MODULE ##
51: ## ##
52: ## 1. Modules used by this module ##
53: ## 2. Various subroutines ##
54: ## 3. Publication Step One ##
55: ## 4. Phase Two ##
56: ## 5. Main Handler ##
57: ## ##
58: ###############################################################################
59:
60:
61: ######################################################################
62: ######################################################################
63:
64: =pod
65:
66: =head1 NAME
67:
68: lonpublisher - LON-CAPA publishing handler
69:
70: =head1 SYNOPSIS
71:
72: B<lonpublisher> is used by B<mod_perl> inside B<Apache>. This is the
73: invocation by F<loncapa_apache.conf>:
74:
75: <Location /adm/publish>
76: PerlAccessHandler Apache::lonacc
77: SetHandler perl-script
78: PerlHandler Apache::lonpublisher
79: ErrorDocument 403 /adm/login
80: ErrorDocument 404 /adm/notfound.html
81: ErrorDocument 406 /adm/unauthorized.html
82: ErrorDocument 500 /adm/errorhandler
83: </Location>
84:
85: =head1 OVERVIEW
86:
87: Authors can only write-access the C</~authorname/> space. They can
88: copy resources into the resource area through the publication step,
89: and move them back through a recover step. Authors do not have direct
90: write-access to their resource space.
91:
92: During the publication step, several events will be
93: triggered. Metadata is gathered, where a wizard manages default
94: entries on a hierarchical per-directory base: The wizard imports the
95: metadata (including access privileges and royalty information) from
96: the most recent published resource in the current directory, and if
97: that is not available, from the next directory above, etc. The Network
98: keeps all previous versions of a resource and makes them available by
99: an explicit version number, which is inserted between the file name
100: and extension, for example C<foo.2.html>, while the most recent
101: version does not carry a version number (C<foo.html>). Servers
102: subscribing to a changed resource are notified that a new version is
103: available.
104:
105: =head1 DESCRIPTION
106:
107: B<lonpublisher> takes the proper steps to add resources to the LON-CAPA
108: digital library. This includes updating the metadata table in the
109: LON-CAPA database.
110:
111: B<lonpublisher> is many things to many people.
112:
113: This module publishes a file. This involves gathering metadata,
114: versioning the file, copying file from construction space to
115: publication space, and copying metadata from construction space
116: to publication space.
117:
118: =head2 SUBROUTINES
119:
120: Many of the undocumented subroutines implement various magical
121: parsing shortcuts.
122:
123: =over 4
124:
125: =cut
126:
127: ######################################################################
128: ######################################################################
129:
130:
131: package Apache::lonpublisher;
132:
133: # ------------------------------------------------- modules used by this module
134: use strict;
135: use Apache::File;
136: use File::Copy;
137: use Apache::Constants qw(:common :http :methods);
138: use HTML::LCParser;
139: use Apache::lonxml;
140: use Apache::loncacc;
141: use DBI;
142: use Apache::lonnet();
143: use Apache::loncommon();
144: use Apache::lonmysql;
145: use vars qw(%metadatafields %metadatakeys);
146:
147: my %addid;
148: my %nokey;
149:
150: my $docroot;
151:
152: my $cuname;
153: my $cudom;
154:
155: =pod
156:
157: =item B<metaeval>
158:
159: Evaluates a string that contains metadata. This subroutine
160: stores values inside I<%metadatafields> and I<%metadatakeys>.
161: The hash key is a I<$unikey> corresponding to a unique id
162: that is descriptive of the parser location inside the XML tree.
163:
164: Parameters:
165:
166: =over 4
167:
168: =item I<$metastring>
169:
170: A string that contains metadata.
171:
172: =back
173:
174: Returns:
175:
176: nothing
177:
178: =cut
179:
180: #########################################
181: #########################################
182: sub metaeval {
183: my $metastring=shift;
184:
185: my $parser=HTML::LCParser->new(\$metastring);
186: my $token;
187: while ($token=$parser->get_token) {
188: if ($token->[0] eq 'S') {
189: my $entry=$token->[1];
190: my $unikey=$entry;
191: if (defined($token->[2]->{'package'})) {
192: $unikey.='_package_'.$token->[2]->{'package'};
193: }
194: if (defined($token->[2]->{'part'})) {
195: $unikey.='_'.$token->[2]->{'part'};
196: }
197: if (defined($token->[2]->{'id'})) {
198: $unikey.='_'.$token->[2]->{'id'};
199: }
200: if (defined($token->[2]->{'name'})) {
201: $unikey.='_'.$token->[2]->{'name'};
202: }
203: foreach (@{$token->[3]}) {
204: $metadatafields{$unikey.'.'.$_}=$token->[2]->{$_};
205: if ($metadatakeys{$unikey}) {
206: $metadatakeys{$unikey}.=','.$_;
207: } else {
208: $metadatakeys{$unikey}=$_;
209: }
210: }
211: if ($metadatafields{$unikey}) {
212: my $newentry=$parser->get_text('/'.$entry);
213: unless (($metadatafields{$unikey}=~/\Q$newentry\E/) ||
214: ($newentry eq '')) {
215: $metadatafields{$unikey}.=', '.$newentry;
216: }
217: } else {
218: $metadatafields{$unikey}=$parser->get_text('/'.$entry);
219: }
220: }
221: }
222: }
223:
224: #########################################
225: #########################################
226:
227: =pod
228:
229: =item B<metaread>
230:
231: Read a metadata file
232:
233: Parameters:
234:
235: =over
236:
237: =item I<$logfile>
238:
239: File output stream to output errors and warnings to.
240:
241: =item I<$fn>
242:
243: File name (including path).
244:
245: =back
246:
247: Returns:
248:
249: =over 4
250:
251: =item Scalar string (if successful)
252:
253: XHTML text that indicates successful reading of the metadata.
254:
255: =back
256:
257: =cut
258:
259: #########################################
260: #########################################
261: sub metaread {
262: my ($logfile,$fn)=@_;
263: unless (-e $fn) {
264: print($logfile 'No file '.$fn."\n");
265: return '<br /><b>No file:</b> <tt>'.$fn.'</tt>';
266: }
267: print($logfile 'Processing '.$fn."\n");
268: my $metastring;
269: {
270: my $metafh=Apache::File->new($fn);
271: $metastring=join('',<$metafh>);
272: }
273: &metaeval($metastring);
274: return '<br /><b>Processed file:</b> <tt>'.$fn.'</tt>';
275: }
276:
277: #########################################
278: #########################################
279:
280: sub coursedependencies {
281: my $url=&Apache::lonnet::declutter(shift);
282: $url=~s/\.meta$//;
283: my ($adomain,$aauthor)=($url=~/^(\w+)\/(\w+)\//);
284: my $regexp=$url;
285: $regexp=~s/(\W)/\\$1/g;
286: $regexp='___'.$regexp.'___course';
287: my %evaldata=&Apache::lonnet::dump('nohist_resevaldata',$adomain,
288: $aauthor,$regexp);
289: my %courses=();
290: foreach (keys %evaldata) {
291: if ($_=~/^([a-zA-Z0-9]+_[a-zA-Z0-9]+)___.+___course$/) {
292: $courses{$1}=1;
293: }
294: }
295: return %courses;
296: }
297: #########################################
298: #########################################
299:
300:
301: =pod
302:
303: =item Form-field-generating subroutines.
304:
305: For input parameters, these subroutines take in values
306: such as I<$name>, I<$value> and other form field metadata.
307: The output (scalar string that is returned) is an XHTML
308: string which presents the form field (foreseeably inside
309: <form></form> tags).
310:
311: =over 4
312:
313: =item B<textfield>
314:
315: =item B<hiddenfield>
316:
317: =item B<selectbox>
318:
319: =back
320:
321: =cut
322:
323: #########################################
324: #########################################
325: sub textfield {
326: my ($title,$name,$value)=@_;
327: my $uctitle=uc($title);
328: return "\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:".
329: "</b></font></p><br />".
330: '<input type="text" name="'.$name.'" size=80 value="'.$value.'" />';
331: }
332:
333: sub hiddenfield {
334: my ($name,$value)=@_;
335: return "\n".'<input type="hidden" name="'.$name.'" value="'.$value.'" />';
336: }
337:
338: sub selectbox {
339: my ($title,$name,$value,$functionref,@idlist)=@_;
340: my $uctitle=uc($title);
341: $value=(split(/\s*,\s*/,$value))[-1];
342: my $selout="\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:".
343: '</b></font></p><br /><select name="'.$name.'">';
344: foreach (@idlist) {
345: $selout.='<option value=\''.$_.'\'';
346: if ($_ eq $value) {
347: $selout.=' selected>'.&{$functionref}($_).'</option>';
348: }
349: else {$selout.='>'.&{$functionref}($_).'</option>';}
350: }
351: return $selout.'</select>';
352: }
353:
354: #########################################
355: #########################################
356:
357: =pod
358:
359: =item B<urlfixup>
360:
361: Fix up a url? First step of publication
362:
363: =cut
364:
365: #########################################
366: #########################################
367: sub urlfixup {
368: my ($url,$target)=@_;
369: unless ($url) { return ''; }
370: #javascript code needs no fixing
371: if ($url =~ /^javascript:/i) { return $url; }
372: if ($url =~ /^mailto:/i) { return $url; }
373: #internal document links need no fixing
374: if ($url =~ /^\#/) { return $url; }
375: my ($host)=($url=~/(?:http\:\/\/)*([^\/]+)/);
376: foreach (values %Apache::lonnet::hostname) {
377: if ($_ eq $host) {
378: $url=~s/^http\:\/\///;
379: $url=~s/^$host//;
380: }
381: }
382: if ($url=~/^http\:\/\//) { return $url; }
383: $url=~s/\~$cuname/res\/$cudom\/$cuname/;
384: return $url;
385: }
386:
387: #########################################
388: #########################################
389:
390: =pod
391:
392: =item B<absoluteurl>
393:
394: Currently undocumented.
395:
396: =cut
397:
398: #########################################
399: #########################################
400: sub absoluteurl {
401: my ($url,$target)=@_;
402: unless ($url) { return ''; }
403: if ($target) {
404: $target=~s/\/[^\/]+$//;
405: $url=&Apache::lonnet::hreflocation($target,$url);
406: }
407: return $url;
408: }
409:
410: #########################################
411: #########################################
412:
413: =pod
414:
415: =item B<set_allow>
416:
417: Currently undocumented
418:
419: =cut
420:
421: #########################################
422: #########################################
423: sub set_allow {
424: my ($allow,$logfile,$target,$tag,$oldurl)=@_;
425: my $newurl=&urlfixup($oldurl,$target);
426: my $return_url=$oldurl;
427: print $logfile 'GUYURL: '.$tag.':'.$oldurl.' - '.$newurl."\n";
428: if ($newurl ne $oldurl) {
429: $return_url=$newurl;
430: print $logfile 'URL: '.$tag.':'.$oldurl.' - '.$newurl."\n";
431: }
432: if (($newurl !~ /^javascript:/i) &&
433: ($newurl !~ /^mailto:/i) &&
434: ($newurl !~ /^http:/i) &&
435: ($newurl !~ /^\#/)) {
436: $$allow{&absoluteurl($newurl,$target)}=1;
437: }
438: return $return_url
439: }
440:
441: #########################################
442: #########################################
443:
444: =pod
445:
446: =item B<get_subscribed_hosts>
447:
448: Currently undocumented
449:
450: =cut
451:
452: #########################################
453: #########################################
454: sub get_subscribed_hosts {
455: my ($target)=@_;
456: my @subscribed;
457: my $filename;
458: $target=~/(.*)\/([^\/]+)$/;
459: my $srcf=$2;
460: opendir(DIR,$1);
461: while ($filename=readdir(DIR)) {
462: if ($filename=~/\Q$srcf\E\.(\w+)$/) {
463: my $subhost=$1;
464: if (($subhost ne 'meta' && $subhost ne 'subscription') &&
465: ($subhost ne $Apache::lonnet::perlvar{'lonHostID'})) {
466: push(@subscribed,$subhost);
467: }
468: }
469: }
470: closedir(DIR);
471: my $sh;
472: if ( $sh=Apache::File->new("$target.subscription") ) {
473: &Apache::lonnet::logthis("opened $target.subscription");
474: while (my $subline=<$sh>) {
475: &Apache::lonnet::logthis("Trying $subline");
476: if ($subline =~ /(^\w+):/) {
477: if ($1 ne $Apache::lonnet::perlvar{'lonHostID'}) {
478: push(@subscribed,$1);
479: }
480: } else {
481: &Apache::lonnet::logthis("No Match for $subline");
482: }
483: }
484: } else {
485: &Apache::lonnet::logthis("Unable to open $target.subscription");
486: }
487: return @subscribed;
488: }
489:
490:
491: #########################################
492: #########################################
493:
494: =pod
495:
496: =item B<get_max_ids_indices>
497:
498: Currently undocumented
499:
500: =cut
501:
502: #########################################
503: #########################################
504: sub get_max_ids_indices {
505: my ($content)=@_;
506: my $maxindex=10;
507: my $maxid=10;
508: my $needsfixup=0;
509: my $duplicateids=0;
510:
511: my %allids;
512: my %duplicatedids;
513:
514: my $parser=HTML::LCParser->new($content);
515: my $token;
516: while ($token=$parser->get_token) {
517: if ($token->[0] eq 'S') {
518: my $counter;
519: if ($counter=$addid{$token->[1]}) {
520: if ($counter eq 'id') {
521: if (defined($token->[2]->{'id'})) {
522: $maxid=($token->[2]->{'id'}>$maxid)?$token->[2]->{'id'}:$maxid;
523: if (exists($allids{$token->[2]->{'id'}})) {
524: $duplicateids=1;
525: $duplicatedids{$token->[2]->{'id'}}=1;
526: } else {
527: $allids{$token->[2]->{'id'}}=1;
528: }
529: } else {
530: $needsfixup=1;
531: }
532: } else {
533: if (defined($token->[2]->{'index'})) {
534: $maxindex=($token->[2]->{'index'}>$maxindex)?$token->[2]->{'index'}:$maxindex;
535: } else {
536: $needsfixup=1;
537: }
538: }
539: }
540: }
541: }
542: return ($needsfixup,$maxid,$maxindex,$duplicateids,
543: (keys(%duplicatedids)));
544: }
545:
546: #########################################
547: #########################################
548:
549: =pod
550:
551: =item B<get_all_text_unbalanced>
552:
553: Currently undocumented
554:
555: =cut
556:
557: #########################################
558: #########################################
559: sub get_all_text_unbalanced {
560: #there is a copy of this in lonxml.pm
561: my($tag,$pars)= @_;
562: my $token;
563: my $result='';
564: $tag='<'.$tag.'>';
565: while ($token = $$pars[-1]->get_token) {
566: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
567: $result.=$token->[1];
568: } elsif ($token->[0] eq 'PI') {
569: $result.=$token->[2];
570: } elsif ($token->[0] eq 'S') {
571: $result.=$token->[4];
572: } elsif ($token->[0] eq 'E') {
573: $result.=$token->[2];
574: }
575: if ($result =~ /(.*)\Q$tag\E(.*)/s) {
576: #&Apache::lonnet::logthis('Got a winner with leftovers ::'.$2);
577: #&Apache::lonnet::logthis('Result is :'.$1);
578: $result=$1;
579: my $redo=$tag.$2;
580: push (@$pars,HTML::LCParser->new(\$redo));
581: $$pars[-1]->xml_mode('1');
582: last;
583: }
584: }
585: return $result
586: }
587:
588: #########################################
589: #########################################
590:
591: =pod
592:
593: =item B<fix_ids_and_indices>
594:
595: Currently undocumented
596:
597: =cut
598:
599: #########################################
600: #########################################
601: #Arguably this should all be done as a lonnet::ssi instead
602: sub fix_ids_and_indices {
603: my ($logfile,$source,$target)=@_;
604:
605: my %allow;
606: my $content;
607: {
608: my $org=Apache::File->new($source);
609: $content=join('',<$org>);
610: }
611:
612: my ($needsfixup,$maxid,$maxindex,$duplicateids,@duplicatedids)=
613: &get_max_ids_indices(\$content);
614:
615: print $logfile ("Got $needsfixup,$maxid,$maxindex,$duplicateids--".
616: join(', ',@duplicatedids));
617: if ($duplicateids) {
618: print $logfile "Duplicate ID(s) exist, ".join(', ',@duplicatedids)."\n";
619: my $outstring='<font color="red">Unable to publish file, it contains duplicated ID(s), ID(s) need to be unique. The duplicated ID(s) are: '.join(', ',@duplicatedids).'</font>';
620: return ($outstring,1);
621: }
622: if ($needsfixup) {
623: print $logfile "Needs ID and/or index fixup\n".
624: "Max ID : $maxid (min 10)\n".
625: "Max Index: $maxindex (min 10)\n";
626: }
627: my $outstring='';
628: my @parser;
629: $parser[0]=HTML::LCParser->new(\$content);
630: $parser[-1]->xml_mode(1);
631: my $token;
632: while (@parser) {
633: while ($token=$parser[-1]->get_token) {
634: if ($token->[0] eq 'S') {
635: my $counter;
636: my $tag=$token->[1];
637: my $lctag=lc($tag);
638: if ($lctag eq 'allow') {
639: $allow{$token->[2]->{'src'}}=1;
640: next;
641: }
642: my %parms=%{$token->[2]};
643: $counter=$addid{$tag};
644: if (!$counter) { $counter=$addid{$lctag}; }
645: if ($counter) {
646: if ($counter eq 'id') {
647: unless (defined($parms{'id'})) {
648: $maxid++;
649: $parms{'id'}=$maxid;
650: print $logfile 'ID: '.$tag.':'.$maxid."\n";
651: }
652: } elsif ($counter eq 'index') {
653: unless (defined($parms{'index'})) {
654: $maxindex++;
655: $parms{'index'}=$maxindex;
656: print $logfile 'Index: '.$tag.':'.$maxindex."\n";
657: }
658: }
659: }
660: foreach my $type ('src','href','background','bgimg') {
661: foreach my $key (keys(%parms)) {
662: if ($key =~ /^$type$/i) {
663: $parms{$key}=&set_allow(\%allow,$logfile,
664: $target,$tag,
665: $parms{$key});
666: }
667: }
668: }
669: # probably a <randomlabel> image type <label>
670: if ($lctag eq 'label' && defined($parms{'description'})) {
671: my $next_token=$parser[-1]->get_token();
672: if ($next_token->[0] eq 'T') {
673: $next_token->[1]=&set_allow(\%allow,$logfile,
674: $target,$tag,
675: $next_token->[1]);
676: }
677: $parser[-1]->unget_token($next_token);
678: }
679: if ($lctag eq 'applet') {
680: my $codebase='';
681: if (defined($parms{'codebase'})) {
682: my $oldcodebase=$parms{'codebase'};
683: unless ($oldcodebase=~/\/$/) {
684: $oldcodebase.='/';
685: }
686: $codebase=&urlfixup($oldcodebase,$target);
687: $codebase=~s/\/$//;
688: if ($codebase ne $oldcodebase) {
689: $parms{'codebase'}=$codebase;
690: print $logfile 'URL codebase: '.$tag.':'.
691: $oldcodebase.' - '.
692: $codebase."\n";
693: }
694: $allow{&absoluteurl($codebase,$target).'/*'}=1;
695: } else {
696: foreach ('archive','code','object') {
697: if (defined($parms{$_})) {
698: my $oldurl=$parms{$_};
699: my $newurl=&urlfixup($oldurl,$target);
700: $newurl=~s/\/[^\/]+$/\/\*/;
701: print $logfile 'Allow: applet '.$_.':'.
702: $oldurl.' allows '.
703: $newurl."\n";
704: $allow{&absoluteurl($newurl,$target)}=1;
705: }
706: }
707: }
708: }
709: my $newparmstring='';
710: my $endtag='';
711: foreach (keys %parms) {
712: if ($_ eq '/') {
713: $endtag=' /';
714: } else {
715: my $quote=($parms{$_}=~/\"/?"'":'"');
716: $newparmstring.=' '.$_.'='.$quote.$parms{$_}.$quote;
717: }
718: }
719: if (!$endtag) { if ($token->[4]=~m:/>$:) { $endtag=' /'; }; }
720: $outstring.='<'.$tag.$newparmstring.$endtag.'>';
721: if ($lctag eq 'm' || $lctag eq 'script'
722: || $lctag eq 'display' || $lctag eq 'tex') {
723: $outstring.=&get_all_text_unbalanced('/'.$lctag,\@parser);
724: }
725: } elsif ($token->[0] eq 'E') {
726: if ($token->[2]) {
727: unless ($token->[1] eq 'allow') {
728: $outstring.='</'.$token->[1].'>';
729: }
730: }
731: } else {
732: $outstring.=$token->[1];
733: }
734: }
735: pop(@parser);
736: }
737:
738: if ($needsfixup) {
739: print $logfile "End of ID and/or index fixup\n".
740: "Max ID : $maxid (min 10)\n".
741: "Max Index: $maxindex (min 10)\n";
742: } else {
743: print $logfile "Does not need ID and/or index fixup\n";
744: }
745:
746: return ($outstring,0,%allow);
747: }
748:
749: #########################################
750: #########################################
751:
752: =pod
753:
754: =item B<store_metadata>
755:
756: Store the metadata in the metadata table in the loncapa database.
757: Uses lonmysql to access the database.
758:
759: Inputs: \%metadata
760:
761: Returns: (error,status). error is undef on success, status is undef on error.
762:
763: =cut
764:
765: #########################################
766: #########################################
767: sub store_metadata {
768: my %metadata = %{shift()};
769: my $error;
770: # Determine if the table exists
771: my $status = &Apache::lonmysql::check_table('metadata');
772: if (! defined($status)) {
773: $error='<font color="red">WARNING: Cannot connect to '.
774: 'database!</font>';
775: &Apache::lonnet::logthis($error);
776: return ($error,undef);
777: }
778: if ($status == 0) {
779: # It would be nice to actually create the table....
780: $error ='<font color="red">WARNING: The metadata table does not '.
781: 'exist in the LON-CAPA database.</font>';
782: &Apache::lonnet::logthis($error);
783: return ($error,undef);
784: }
785: # Remove old value from table
786: $status = &Apache::lonmysql::remove_from_table
787: ('metadata','url',$metadata{'url'});
788: if (! defined($status)) {
789: $error = '<font color="red">Error when removing old values from '.
790: 'metadata table in LON-CAPA database.</font>';
791: &Apache::lonnet::logthis($error);
792: return ($error,undef);
793: }
794: # Store data in table.
795: $status = &Apache::lonmysql::store_row('metadata',\%metadata);
796: if (! defined($status)) {
797: $error='<font color="red">Error occured storing new values in '.
798: 'metadata table in LON-CAPA database</font>';
799: &Apache::lonnet::logthis($error);
800: return ($error,undef);
801: }
802: return (undef,$status);
803: }
804:
805: #########################################
806: #########################################
807:
808: =pod
809:
810: =item B<publish>
811:
812: This is the workhorse function of this module. This subroutine generates
813: backup copies, performs any automatic processing (prior to publication,
814: especially for rat and ssi files),
815:
816: Returns a 2 element array, the first is the string to be shown to the
817: user, the second is an error code, either 1 (an error occured) or 0
818: (no error occurred)
819:
820: I<Additional documentation needed.>
821:
822: =cut
823:
824: #########################################
825: #########################################
826: sub publish {
827:
828: my ($source,$target,$style,$batch)=@_;
829: my $logfile;
830: my $scrout='';
831: my $allmeta='';
832: my $content='';
833: my %allow=();
834:
835: unless ($logfile=Apache::File->new('>>'.$source.'.log')) {
836: return ('<font color="red">No write permission to user directory, FAIL</font>',1);
837: }
838: print $logfile
839: "\n\n================= Publish ".localtime()." Phase One ================\n".$ENV{'user.name'}.'@'.$ENV{'user.domain'}."\n";
840:
841: if (($style eq 'ssi') || ($style eq 'rat') || ($style eq 'prv')) {
842: # ------------------------------------------------------- This needs processing
843:
844: # ----------------------------------------------------------------- Backup Copy
845: my $copyfile=$source.'.save';
846: if (copy($source,$copyfile)) {
847: print $logfile "Copied original file to ".$copyfile."\n";
848: } else {
849: print $logfile "Unable to write backup ".$copyfile.':'.$!."\n";
850: return ("<font color=\"red\">Failed to write backup copy, $!,FAIL</font>",1);
851: }
852: # ------------------------------------------------------------- IDs and indices
853:
854: my ($outstring,$error);
855: ($outstring,$error,%allow)=&fix_ids_and_indices($logfile,$source,
856: $target);
857: if ($error) { return ($outstring,$error); }
858: # ------------------------------------------------------------ Construct Allows
859:
860: $scrout.='<h3>Dependencies</h3>';
861: my $allowstr='';
862: foreach (sort(keys(%allow))) {
863: my $thisdep=$_;
864: if ($thisdep !~ /[^\s]/) { next; }
865: unless ($style eq 'rat') {
866: $allowstr.="\n".'<allow src="'.$thisdep.'" />';
867: }
868: $scrout.='<br />';
869: unless ($thisdep=~/\*/) {
870: $scrout.='<a href="'.$thisdep.'">';
871: }
872: $scrout.='<tt>'.$thisdep.'</tt>';
873: unless ($thisdep=~/\*/) {
874: $scrout.='</a>';
875: if (
876: &Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
877: $thisdep.'.meta') eq '-1') {
878: $scrout.= ' - <font color="red">Currently not available'.
879: '</font>';
880: } else {
881: my %temphash=(&Apache::lonnet::declutter($target).'___'.
882: &Apache::lonnet::declutter($thisdep).'___usage'
883: => time);
884: $thisdep=~/^\/res\/(\w+)\/(\w+)\//;
885: if ((defined($1)) && (defined($2))) {
886: &Apache::lonnet::put('nohist_resevaldata',\%temphash,
887: $1,$2);
888: }
889: }
890: }
891: }
892: $outstring=~s/\n*(\<\/[^\>]+\>)\s*$/$allowstr\n$1\n/s;
893:
894: #Encode any High ASCII characters
895: $outstring=&HTML::Entities::encode($outstring,"\200-\377");
896: # ------------------------------------------------------------- Write modified.
897:
898: {
899: my $org;
900: unless ($org=Apache::File->new('>'.$source)) {
901: print $logfile "No write permit to $source\n";
902: return ('<font color="red">No write permission to '.$source.
903: ', FAIL</font>',1);
904: }
905: print($org $outstring);
906: }
907: $content=$outstring;
908:
909: }
910: # -------------------------------------------- Initial step done, now metadata.
911:
912: # --------------------------------------- Storage for metadata keys and fields.
913:
914: %metadatafields=();
915: %metadatakeys=();
916:
917: my %oldparmstores=();
918:
919: unless ($batch) {
920: $scrout.='<h3>Metadata Information ' .
921: Apache::loncommon::help_open_topic("Metadata_Description")
922: . '</h3>';
923: }
924:
925: # ------------------------------------------------ First, check out environment
926: unless (-e $source.'.meta') {
927: $metadatafields{'author'}=$ENV{'environment.firstname'}.' '.
928: $ENV{'environment.middlename'}.' '.
929: $ENV{'environment.lastname'}.' '.
930: $ENV{'environment.generation'};
931: $metadatafields{'author'}=~s/\s+/ /g;
932: $metadatafields{'author'}=~s/\s+$//;
933: $metadatafields{'owner'}=$cuname.'@'.$cudom;
934: $metadatafields{'modifyinguser'}=$ENV{'user.name'}.'@'.
935: $ENV{'user.domain'};
936: $metadatafields{'authorspace'}=$cuname.'@'.$cudom;
937:
938: # ------------------------------------------------ Check out directory hierachy
939:
940: my $thisdisfn=$source;
941: $thisdisfn=~s/^\/home\/\Q$cuname\E\///;
942:
943: my @urlparts=split(/\//,$thisdisfn);
944: $#urlparts--;
945:
946: my $currentpath='/home/'.$cuname.'/';
947:
948: foreach (@urlparts) {
949: $currentpath.=$_.'/';
950: $scrout.=&metaread($logfile,$currentpath.'default.meta');
951: }
952:
953: # ------------------- Clear out parameters and stores (there should not be any)
954:
955: foreach (keys %metadatafields) {
956: if (($_=~/^parameter/) || ($_=~/^stores/)) {
957: delete $metadatafields{$_};
958: }
959: }
960:
961: } else {
962: # ---------------------- Read previous metafile, remember parameters and stores
963:
964: $scrout.=&metaread($logfile,$source.'.meta');
965:
966: foreach (keys %metadatafields) {
967: if (($_=~/^parameter/) || ($_=~/^stores/)) {
968: $oldparmstores{$_}=1;
969: delete $metadatafields{$_};
970: }
971: }
972:
973: }
974:
975: # -------------------------------------------------- Parse content for metadata
976: if (($style eq 'ssi') || ($style eq 'prv')) {
977: my $oldenv=$ENV{'request.uri'};
978:
979: $ENV{'request.uri'}=$target;
980: $allmeta=Apache::lonxml::xmlparse(undef,'meta',$content);
981: $ENV{'request.uri'}=$oldenv;
982:
983: &metaeval($allmeta);
984: }
985: # ---------------- Find and document discrepancies in the parameters and stores
986:
987: my $chparms='';
988: foreach (sort keys %metadatafields) {
989: if (($_=~/^parameter/) || ($_=~/^stores/)) {
990: unless ($_=~/\.\w+$/) {
991: unless ($oldparmstores{$_}) {
992: print $logfile 'New: '.$_."\n";
993: $chparms.=$_.' ';
994: }
995: }
996: }
997: }
998: if ($chparms) {
999: $scrout.='<p><b>New parameters or stored values:</b> '.$chparms.'</p>';
1000: }
1001:
1002: $chparms='';
1003: foreach (sort keys %oldparmstores) {
1004: if (($_=~/^parameter/) || ($_=~/^stores/)) {
1005: unless (($metadatafields{$_.'.name'}) ||
1006: ($metadatafields{$_.'.package'}) || ($_=~/\.\w+$/)) {
1007: print $logfile 'Obsolete: '.$_."\n";
1008: $chparms.=$_.' ';
1009: }
1010: }
1011: }
1012: if ($chparms) {
1013: $scrout.='<p><b>Obsolete parameters or stored values:</b> '.
1014: $chparms.'</p>';
1015: }
1016:
1017: # ------------------------------------------------------- Now have all metadata
1018:
1019: my %keywords=();
1020:
1021: if (length($content)<500000) {
1022: my $textonly=$content;
1023: $textonly=~s/\<script[^\<]+\<\/script\>//g;
1024: $textonly=~s/\<m\>[^\<]+\<\/m\>//g;
1025: $textonly=~s/\<[^\>]*\>//g;
1026: $textonly=~tr/A-Z/a-z/;
1027: $textonly=~s/[\$\&][a-z]\w*//g;
1028: $textonly=~s/[^a-z\s]//g;
1029:
1030: foreach ($textonly=~m/(\w+)/g) {
1031: unless ($nokey{$_}) {
1032: $keywords{$_}=1;
1033: }
1034: }
1035: }
1036:
1037:
1038: foreach (split(/\W+/,$metadatafields{'keywords'})) {
1039: $keywords{$_}=1;
1040: }
1041: # --------------------------------------------------- Now we also have keywords
1042: # =============================================================================
1043: # INTERACTIVE MODE
1044: #
1045: unless ($batch) {
1046: $scrout.=
1047: '<form name="pubform" action="/adm/publish" method="post">'.
1048: '<p><input type="submit" value="Finalize Publication" /></p>'.
1049: &hiddenfield('phase','two').
1050: &hiddenfield('filename',$ENV{'form.filename'}).
1051: &hiddenfield('allmeta',&Apache::lonnet::escape($allmeta)).
1052: &hiddenfield('dependencies',join(',',keys %allow)).
1053: &textfield('Title','title',$metadatafields{'title'}).
1054: &textfield('Author(s)','author',$metadatafields{'author'}).
1055: &textfield('Subject','subject',$metadatafields{'subject'});
1056:
1057: # --------------------------------------------------- Scan content for keywords
1058:
1059: my $keywords_help = Apache::loncommon::help_open_topic("Publishing_Keywords");
1060: my $keywordout=<<"END";
1061: <script>
1062: function checkAll(field) {
1063: for (i = 0; i < field.length; i++)
1064: field[i].checked = true ;
1065: }
1066:
1067: function uncheckAll(field) {
1068: for (i = 0; i < field.length; i++)
1069: field[i].checked = false ;
1070: }
1071: </script>
1072: <p><font color="#800000" face="helvetica"><b>KEYWORDS:</b></font>
1073: $keywords_help</b>
1074: <input type="button" value="check all" onclick="javascript:checkAll(document.pubform.keywords)" />
1075: <input type="button" value="uncheck all" onclick="javascript:uncheckAll(document.pubform.keywords)" />
1076: </p>
1077: <br />
1078: END
1079: $keywordout.='<table border="2"><tr>';
1080: my $colcount=0;
1081:
1082: foreach (sort keys %keywords) {
1083: $keywordout.='<td><input type="checkbox" name="keywords" value="'.$_.'"';
1084: if ($metadatafields{'keywords'}) {
1085: if ($metadatafields{'keywords'}=~/\Q$_\E/) {
1086: $keywordout.=' checked="on"';
1087: }
1088: } elsif (&Apache::loncommon::keyword($_)) {
1089: $keywordout.=' checked="on"';
1090: }
1091: $keywordout.=' />'.$_.'</td>';
1092: if ($colcount>10) {
1093: $keywordout.="</tr><tr>\n";
1094: $colcount=0;
1095: }
1096: $colcount++;
1097: }
1098:
1099: $keywordout.='</tr></table>';
1100:
1101: $scrout.=$keywordout;
1102:
1103: $scrout.=&textfield('Additional Keywords','addkey','');
1104:
1105: $scrout.=&textfield('Notes','notes',$metadatafields{'notes'});
1106:
1107: $scrout.=
1108: "\n<p><font color=\"#800000\" face=\"helvetica\"><b>ABSTRACT:".
1109: "</b></font></p><br />".
1110: '<textarea cols="80" rows="5" name="abstract">'.
1111: $metadatafields{'abstract'}.'</textarea></p>';
1112:
1113: $source=~/\.(\w+)$/;
1114:
1115: $scrout.=&hiddenfield('mime',$1);
1116:
1117: my $defaultlanguage=$metadatafields{'language'};
1118: $defaultlanguage =~ s/\s*notset\s*//g;
1119: $defaultlanguage =~ s/^,\s*//g;
1120: $defaultlanguage =~ s/,\s*$//g;
1121:
1122: $scrout.=&selectbox('Language','language',
1123: $defaultlanguage,
1124: \&Apache::loncommon::languagedescription,
1125: (&Apache::loncommon::languageids),
1126: );
1127:
1128: unless ($metadatafields{'creationdate'}) {
1129: $metadatafields{'creationdate'}=time;
1130: }
1131: $scrout.=&hiddenfield('creationdate',
1132: &Apache::loncommon::unsqltime($metadatafields{'creationdate'}));
1133:
1134: $scrout.=&hiddenfield('lastrevisiondate',time);
1135:
1136:
1137: $scrout.=&textfield('Publisher/Owner','owner',
1138: $metadatafields{'owner'});
1139:
1140: # -------------------------------------------------- Correct copyright for rat.
1141: my $defaultoption=$metadatafields{'copyright'};
1142: unless ($defaultoption) { $defaultoption='default'; }
1143: unless ($style eq 'prv') {
1144: if ($style eq 'rat') {
1145: if ($metadatafields{'copyright'} eq 'public') {
1146: delete $metadatafields{'copyright'};
1147: $defaultoption='default';
1148: }
1149: $scrout.=&selectbox('Copyright/Distribution','copyright',
1150: $defaultoption,
1151: \&Apache::loncommon::copyrightdescription,
1152: (grep !/^public$/,(&Apache::loncommon::copyrightids)));
1153: } else {
1154: $scrout.=&selectbox('Copyright/Distribution','copyright',
1155: $defaultoption,
1156: \&Apache::loncommon::copyrightdescription,
1157: (&Apache::loncommon::copyrightids));
1158: }
1159:
1160: my $copyright_help =
1161: Apache::loncommon::help_open_topic('Publishing_Copyright');
1162: $scrout =~ s/DISTRIBUTION:/'DISTRIBUTION: ' . $copyright_help/ge;
1163: $scrout.=&textfield('Custom Distribution File','customdistributionfile',
1164: $metadatafields{'customdistributionfile'}).
1165: $copyright_help;
1166: } else {
1167: $scrout.=&hiddenfield('copyright','private');
1168: }
1169: return ($scrout.'<p><input type="submit" value="Finalize Publication" /></p></form>',0);
1170: # =============================================================================
1171: # BATCH MODE
1172: #
1173: } else {
1174: # Transfer metadata directly to environment for stage 2
1175: foreach (keys %metadatafields) {
1176: $ENV{'form.'.$_}=$metadatafields{$_};
1177: }
1178: $ENV{'form.addkey'}='';
1179: $ENV{'form.keywords'}='';
1180: foreach (keys %keywords) {
1181: if ($metadatafields{'keywords'}) {
1182: if ($metadatafields{'keywords'}=~/\Q$_\E/) {
1183: $ENV{'form.keywords'}.=$_.',';
1184: }
1185: } elsif (&Apache::loncommon::keyword($_)) {
1186: $ENV{'form.keywords'}.=$_.',';
1187: }
1188: }
1189: $ENV{'form.keywords'}=~s/\,$//;
1190: unless ($ENV{'form.creationdate'}) { $ENV{'form.creationdate'}=time; }
1191: $ENV{'form.lastrevisiondate'}=time;
1192: if ((($style eq 'rat') && ($ENV{'form.copyright'} eq 'public')) ||
1193: (!$ENV{'form.copyright'})) {
1194: $ENV{'form.copyright'}='default';
1195: }
1196: $ENV{'form.allmeta'}=&Apache::lonnet::escape($allmeta);
1197: return ($scrout,0);
1198: }
1199: }
1200:
1201: #########################################
1202: #########################################
1203:
1204: =pod
1205:
1206: =item B<phasetwo>
1207:
1208: Render second interface showing status of publication steps.
1209: This is publication step two.
1210:
1211: Parameters:
1212:
1213: =over 4
1214:
1215: =item I<$source>
1216:
1217: =item I<$target>
1218:
1219: =item I<$style>
1220:
1221: =item I<$distarget>
1222:
1223: =back
1224:
1225: Returns:
1226:
1227: =over 4
1228:
1229: =item Scalar string
1230:
1231: String contains status (errors and warnings) and information associated with
1232: the server's attempts at publication.
1233:
1234: =cut
1235:
1236: #'stupid emacs
1237: #########################################
1238: #########################################
1239: sub phasetwo {
1240:
1241: my ($r,$source,$target,$style,$distarget,$batch)=@_;
1242: $source=~s/\/+/\//g;
1243: $target=~s/\/+/\//g;
1244:
1245: if ($target=~/\_\_\_/) {
1246: $r->print(
1247: '<font color="red">Unsupported character combination "<tt>___</tt>" in filename, FAIL</font>');
1248: return 0;
1249: }
1250: $distarget=~s/\/+/\//g;
1251: my $logfile;
1252: unless ($logfile=Apache::File->new('>>'.$source.'.log')) {
1253: $r->print(
1254: '<font color="red">No write permission to user directory, FAIL</font>');
1255: return 0;
1256: }
1257: print $logfile
1258: "\n================= Publish ".localtime()." Phase Two ================\n".$ENV{'user.name'}.'@'.$ENV{'user.domain'}."\n";
1259:
1260: %metadatafields=();
1261: %metadatakeys=();
1262:
1263: &metaeval(&Apache::lonnet::unescape($ENV{'form.allmeta'}));
1264:
1265: $metadatafields{'title'}=$ENV{'form.title'};
1266: $metadatafields{'author'}=$ENV{'form.author'};
1267: $metadatafields{'subject'}=$ENV{'form.subject'};
1268: $metadatafields{'notes'}=$ENV{'form.notes'};
1269: $metadatafields{'abstract'}=$ENV{'form.abstract'};
1270: $metadatafields{'mime'}=$ENV{'form.mime'};
1271: $metadatafields{'language'}=$ENV{'form.language'};
1272: $metadatafields{'creationdate'}=$ENV{'form.creationdate'};
1273: $metadatafields{'lastrevisiondate'}=$ENV{'form.lastrevisiondate'};
1274: $metadatafields{'owner'}=$ENV{'form.owner'};
1275: $metadatafields{'copyright'}=$ENV{'form.copyright'};
1276: $metadatafields{'customdistributionfile'}=
1277: $ENV{'form.customdistributionfile'};
1278: $metadatafields{'dependencies'}=$ENV{'form.dependencies'};
1279:
1280: my $allkeywords=$ENV{'form.addkey'};
1281: if (exists($ENV{'form.keywords'})) {
1282: if (ref($ENV{'form.keywords'})) {
1283: $allkeywords .= ','.join(',',@{$ENV{'form.keywords'}});
1284: } else {
1285: $allkeywords .= ','.$ENV{'form.keywords'};
1286: }
1287: }
1288: $allkeywords=~s/\W+/\,/;
1289: $allkeywords=~s/^\,//;
1290: $metadatafields{'keywords'}=$allkeywords;
1291:
1292: {
1293: print $logfile "\nWrite metadata file for ".$source;
1294: my $mfh;
1295: unless ($mfh=Apache::File->new('>'.$source.'.meta')) {
1296: return
1297: '<font color="red">Could not write metadata, FAIL</font>';
1298: }
1299: foreach (sort keys %metadatafields) {
1300: unless ($_=~/\./) {
1301: my $unikey=$_;
1302: $unikey=~/^([A-Za-z]+)/;
1303: my $tag=$1;
1304: $tag=~tr/A-Z/a-z/;
1305: print $mfh "\n\<$tag";
1306: foreach (split(/\,/,$metadatakeys{$unikey})) {
1307: my $value=$metadatafields{$unikey.'.'.$_};
1308: $value=~s/\"/\'\'/g;
1309: print $mfh ' '.$_.'="'.$value.'"';
1310: }
1311: print $mfh '>'.
1312: &HTML::Entities::encode($metadatafields{$unikey})
1313: .'</'.$tag.'>';
1314: }
1315: }
1316: $r->print('<p>Wrote Metadata</p>');
1317: print $logfile "\nWrote metadata";
1318: }
1319:
1320: # -------------------------------- Synchronize entry with SQL metadata database
1321:
1322: $metadatafields{'url'} = $distarget;
1323: $metadatafields{'version'} = 'current';
1324: unless ($metadatafields{'copyright'} eq 'priv') {
1325: my ($error,$success) = &store_metadata(\%metadatafields);
1326: if ($success) {
1327: $r->print('<p>Synchronized SQL metadata database</p>');
1328: print $logfile "\nSynchronized SQL metadata database";
1329: } else {
1330: $r->print($error);
1331: print $logfile "\n".$error;
1332: }
1333: } else {
1334: $r->print('<p>Private Publication - did not synchronize database</p>');
1335: print $logfile "\nPrivate: Did not synchronize data into ".
1336: "SQL metadata database";
1337: }
1338: # ----------------------------------------------------------- Copy old versions
1339:
1340: if (-e $target) {
1341: my $filename;
1342: my $maxversion=0;
1343: $target=~/(.*)\/([^\/]+)\.(\w+)$/;
1344: my $srcf=$2;
1345: my $srct=$3;
1346: my $srcd=$1;
1347: unless ($srcd=~/^\/home\/httpd\/html\/res/) {
1348: print $logfile "\nPANIC: Target dir is ".$srcd;
1349: return "<font color=\"red\">Invalid target directory, FAIL</font>";
1350: }
1351: opendir(DIR,$srcd);
1352: while ($filename=readdir(DIR)) {
1353: if (-l $srcd.'/'.$filename) {
1354: unlink($srcd.'/'.$filename);
1355: unlink($srcd.'/'.$filename.'.meta');
1356: } else {
1357: if ($filename=~/\Q$srcf\E\.(\d+)\.\Q$srct\E$/) {
1358: $maxversion=($1>$maxversion)?$1:$maxversion;
1359: }
1360: }
1361: }
1362: closedir(DIR);
1363: $maxversion++;
1364: $r->print('<p>Creating old version '.$maxversion.'</p>');
1365: print $logfile "\nCreating old version ".$maxversion."\n";
1366:
1367: my $copyfile=$srcd.'/'.$srcf.'.'.$maxversion.'.'.$srct;
1368:
1369: if (copy($target,$copyfile)) {
1370: print $logfile "Copied old target to ".$copyfile."\n";
1371: $r->print('<p>Copied old target file</p>');
1372: } else {
1373: print $logfile "Unable to write ".$copyfile.':'.$!."\n";
1374: return "<font color=\"red\">Failed to copy old target, $!, FAIL</font>";
1375: }
1376:
1377: # --------------------------------------------------------------- Copy Metadata
1378:
1379: $copyfile=$copyfile.'.meta';
1380:
1381: if (copy($target.'.meta',$copyfile)) {
1382: print $logfile "Copied old target metadata to ".$copyfile."\n";
1383: $r->print('<p>Copied old metadata</p>')
1384: } else {
1385: print $logfile "Unable to write metadata ".$copyfile.':'.$!."\n";
1386: if (-e $target.'.meta') {
1387: return
1388: "<font color=\"red\">Failed to write old metadata copy, $!, FAIL</font>";
1389: }
1390: }
1391:
1392:
1393: } else {
1394: $r->print('<p>Initial version</p>');
1395: print $logfile "\nInitial version";
1396: }
1397:
1398: # ---------------------------------------------------------------- Write Source
1399: my $copyfile=$target;
1400:
1401: my @parts=split(/\//,$copyfile);
1402: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1403:
1404: my $count;
1405: for ($count=5;$count<$#parts;$count++) {
1406: $path.="/$parts[$count]";
1407: if ((-e $path)!=1) {
1408: print $logfile "\nCreating directory ".$path;
1409: $r->print('<p>Created directory '.$parts[$count].'</p>');
1410: mkdir($path,0777);
1411: }
1412: }
1413:
1414: if (copy($source,$copyfile)) {
1415: print $logfile "\nCopied original source to ".$copyfile."\n";
1416: $r->print('<p>Copied source file</p>');
1417: } else {
1418: print $logfile "\nUnable to write ".$copyfile.':'.$!."\n";
1419: return "<font color=\"red\">Failed to copy source, $!, FAIL</font>";
1420: }
1421:
1422: # --------------------------------------------------------------- Copy Metadata
1423:
1424: $copyfile=$copyfile.'.meta';
1425:
1426: if (copy($source.'.meta',$copyfile)) {
1427: print $logfile "\nCopied original metadata to ".$copyfile."\n";
1428: $r->print('<p>Copied metadata</p>');
1429: } else {
1430: print $logfile "\nUnable to write metadata ".$copyfile.':'.$!."\n";
1431: return
1432: "<font color=\"red\">Failed to write metadata copy, $!, FAIL</font>";
1433: }
1434: $r->rflush;
1435: # --------------------------------------------------- Send update notifications
1436:
1437: my @subscribed=&get_subscribed_hosts($target);
1438: foreach my $subhost (@subscribed) {
1439: $r->print('<p>Notifying host '.$subhost.':');$r->rflush;
1440: print $logfile "\nNotifying host ".$subhost.':';
1441: my $reply=&Apache::lonnet::critical('update:'.$target,$subhost);
1442: $r->print($reply.'</p><br />');$r->rflush;
1443: print $logfile $reply;
1444: }
1445:
1446: # ---------------------------------------- Send update notifications, meta only
1447:
1448: my @subscribedmeta=&get_subscribed_hosts("$target.meta");
1449: foreach my $subhost (@subscribedmeta) {
1450: $r->print('<p>Notifying host for metadata only '.$subhost.':');$r->rflush;
1451: print $logfile "\nNotifying host for metadata only ".$subhost.':';
1452: my $reply=&Apache::lonnet::critical('update:'.$target.'.meta',
1453: $subhost);
1454: $r->print($reply.'</p><br />');$r->rflush;
1455: print $logfile $reply;
1456: }
1457:
1458: # --------------------------------------------------- Notify subscribed courses
1459: my %courses=&coursedependencies($target);
1460: my $now=time;
1461: foreach (keys %courses) {
1462: $r->print('<p>Notifying course '.$_.':');$r->rflush;
1463: print $logfile "\nNotifying host ".$_.':';
1464: my ($cdom,$cname)=split(/\_/,$_);
1465: my $reply=&Apache::lonnet::cput
1466: ('versionupdate',{$target => $now},$cdom,$cname);
1467: $r->print($reply.'</p><br />');$r->rflush;
1468: print $logfile $reply;
1469: }
1470: # ------------------------------------------------ Provide link to new resource
1471: unless ($batch) {
1472: my $thisdistarget=$target;
1473: $thisdistarget=~s/^\Q$docroot\E//;
1474:
1475: my $thissrc=$source;
1476: $thissrc=~s/^\/home\/(\w+)\/public_html/\/priv\/$1/;
1477:
1478: my $thissrcdir=$thissrc;
1479: $thissrcdir=~s/\/[^\/]+$/\//;
1480:
1481:
1482: $r->print(
1483: '<hr /><a href="'.$thisdistarget.'"><font size="+2">'.
1484: 'View Published Version</font></a>'.
1485: '<p><a href="'.$thissrc.'"><font size=+2>Back to Source</font></a></p>'.
1486: '<p><a href="'.$thissrcdir.
1487: '"><font size="+2">Back to Source Directory</font></a></p>');
1488: }
1489: }
1490:
1491: #########################################
1492:
1493: sub batchpublish {
1494: my ($r,$srcfile,$targetfile)=@_;
1495: #publication pollutes %ENV with form.* values
1496: my %oldENV=%ENV;
1497: $srcfile=~s/\/+/\//g;
1498: $targetfile=~s/\/+/\//g;
1499: my $thisdisfn=$srcfile;
1500: $thisdisfn=~s/\/home\/korte\/public_html\///;
1501: $srcfile=~s/\/+/\//g;
1502:
1503: my $docroot=$r->dir_config('lonDocRoot');
1504: my $thisdistarget=$targetfile;
1505: $thisdistarget=~s/^\Q$docroot\E//;
1506:
1507:
1508: undef %metadatafields;
1509: undef %metadatakeys;
1510: %metadatafields=();
1511: %metadatakeys=();
1512: $srcfile=~/\.(\w+)$/;
1513: my $thistype=$1;
1514:
1515:
1516: my $thisembstyle=&Apache::loncommon::fileembstyle($thistype);
1517:
1518: $r->print('<h2>Publishing <tt>'.$thisdisfn.'</tt></h2>');
1519:
1520: # phase one takes
1521: # my ($source,$target,$style,$batch)=@_;
1522: my ($outstring,$error)=&publish($srcfile,$targetfile,$thisembstyle,1);
1523: $r->print('<p>'.$outstring.'</p>');
1524: # phase two takes
1525: # my ($source,$target,$style,$distarget,batch)=@_;
1526: # $ENV{'form.allmeta'},$ENV{'form.title'},$ENV{'form.author'},...
1527: if (!$error) {
1528: $r->print('<p>');
1529: &phasetwo($r,$srcfile,$targetfile,$thisembstyle,$thisdistarget,1);
1530: $r->print('</p>');
1531: }
1532: %ENV=%oldENV;
1533: return '';
1534: }
1535:
1536: #########################################
1537:
1538: sub publishdirectory {
1539: my ($r,$fn,$thisdisfn)=@_;
1540: $fn=~s/\/+/\//g;
1541: $thisdisfn=~s/\/+/\//g;
1542: my $resdir=
1543: $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/'.$cudom.'/'.$cuname.'/'.
1544: $thisdisfn;
1545: $r->print('<h1>Directory <tt>'.$thisdisfn.'</tt></h1>'.
1546: 'Target: <tt>'.$resdir.'</tt><br />');
1547:
1548: my $dirptr=16384; # Mask indicating a directory in stat.cmode.
1549:
1550: opendir(DIR,$fn);
1551: my @files=sort(readdir(DIR));
1552: foreach my $filename (@files) {
1553: my ($cdev,$cino,$cmode,$cnlink,
1554: $cuid,$cgid,$crdev,$csize,
1555: $catime,$cmtime,$cctime,
1556: $cblksize,$cblocks)=stat($fn.'/'.$filename);
1557:
1558: my $extension='';
1559: if ($filename=~/\.(\w+)$/) { $extension=$1; }
1560: if ($cmode&$dirptr) {
1561: if (($filename!~/^\./) && ($ENV{'form.pubrec'})) {
1562: &publishdirectory($r,$fn.'/'.$filename,$thisdisfn.'/'.$filename);
1563: }
1564: } elsif ((&Apache::loncommon::fileembstyle($extension) ne 'hdn') &&
1565: ($filename!~/^[\#\.]/) && ($filename!~/\~$/)) {
1566: # find out publication status and/or exiting metadata
1567: my $publishthis=0;
1568: if (-e $resdir.'/'.$filename) {
1569: my ($rdev,$rino,$rmode,$rnlink,
1570: $ruid,$rgid,$rrdev,$rsize,
1571: $ratime,$rmtime,$rctime,
1572: $rblksize,$rblocks)=stat($resdir.'/'.$filename);
1573: if (($rmtime<$cmtime) || ($ENV{'form.forcerepub'})) {
1574: # previously published, modified now
1575: $publishthis=1;
1576: }
1577: } else {
1578: # never published
1579: $publishthis=1;
1580: }
1581: if ($publishthis) {
1582: &batchpublish($r,$fn.'/'.$filename,$resdir.'/'.$filename);
1583: } else {
1584: $r->print('<br />Skipping '.$filename.'<br />');
1585: }
1586: $r->rflush();
1587: }
1588: }
1589: closedir(DIR);
1590: }
1591: #########################################
1592:
1593: =pod
1594:
1595: =item B<handler>
1596:
1597: A basic outline of the handler subroutine follows.
1598:
1599: =over 4
1600:
1601: =item *
1602:
1603: Get query string for limited number of parameters.
1604:
1605: =item *
1606:
1607: Check filename.
1608:
1609: =item *
1610:
1611: File is there and owned, init lookup tables.
1612:
1613: =item *
1614:
1615: Start page output.
1616:
1617: =item *
1618:
1619: Evaluate individual file, and then output information.
1620:
1621: =item *
1622:
1623: Publishing from $thisfn to $thistarget with $thisembstyle.
1624:
1625: =back
1626:
1627: =cut
1628:
1629: #########################################
1630: #########################################
1631: sub handler {
1632: my $r=shift;
1633:
1634: if ($r->header_only) {
1635: $r->content_type('text/html');
1636: $r->send_http_header;
1637: return OK;
1638: }
1639:
1640: # Get query string for limited number of parameters
1641:
1642: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1643: ['filename']);
1644:
1645: # -------------------------------------------------------------- Check filename
1646:
1647: my $fn=&Apache::lonnet::unescape($ENV{'form.filename'});
1648:
1649:
1650: unless ($fn) {
1651: $r->log_reason($cuname.' at '.$cudom.
1652: ' trying to publish empty filename', $r->filename);
1653: return HTTP_NOT_FOUND;
1654: }
1655:
1656: ($cuname,$cudom)=
1657: &Apache::loncacc::constructaccess($fn,$r->dir_config('lonDefDomain'));
1658: unless (($cuname) && ($cudom)) {
1659: $r->log_reason($cuname.' at '.$cudom.
1660: ' trying to publish file '.$ENV{'form.filename'}.
1661: ' ('.$fn.') - not authorized',
1662: $r->filename);
1663: return HTTP_NOT_ACCEPTABLE;
1664: }
1665:
1666: unless (&Apache::lonnet::homeserver($cuname,$cudom)
1667: eq $r->dir_config('lonHostID')) {
1668: $r->log_reason($cuname.' at '.$cudom.
1669: ' trying to publish file '.$ENV{'form.filename'}.
1670: ' ('.$fn.') - not homeserver ('.
1671: &Apache::lonnet::homeserver($cuname,$cudom).')',
1672: $r->filename);
1673: return HTTP_NOT_ACCEPTABLE;
1674: }
1675:
1676: $fn=~s/^http\:\/\/[^\/]+//;
1677: $fn=~s/^\/\~(\w+)/\/home\/$1\/public_html/;
1678:
1679: my $targetdir='';
1680: $docroot=$r->dir_config('lonDocRoot');
1681: if ($1 ne $cuname) {
1682: $r->log_reason($cuname.' at '.$cudom.
1683: ' trying to publish unowned file '.$ENV{'form.filename'}.
1684: ' ('.$fn.')',
1685: $r->filename);
1686: return HTTP_NOT_ACCEPTABLE;
1687: } else {
1688: $targetdir=$docroot.'/res/'.$cudom;
1689: }
1690:
1691:
1692: unless (-e $fn) {
1693: $r->log_reason($cuname.' at '.$cudom.
1694: ' trying to publish non-existing file '.$ENV{'form.filename'}.
1695: ' ('.$fn.')',
1696: $r->filename);
1697: return HTTP_NOT_FOUND;
1698: }
1699:
1700: unless ($ENV{'form.phase'} eq 'two') {
1701:
1702: # -------------------------------- File is there and owned, init lookup tables.
1703:
1704: %addid=();
1705:
1706: {
1707: my $fh=Apache::File->new($r->dir_config('lonTabDir').'/addid.tab');
1708: while (<$fh>=~/(\w+)\s+(\w+)/) {
1709: $addid{$1}=$2;
1710: }
1711: }
1712:
1713: %nokey=();
1714:
1715: {
1716: my $fh=Apache::File->new($r->dir_config('lonIncludes').'/un_keyword.tab');
1717: while (<$fh>) {
1718: my $word=$_;
1719: chomp($word);
1720: $nokey{$word}=1;
1721: }
1722: }
1723:
1724: }
1725:
1726: # ---------------------------------------------------------- Start page output.
1727:
1728: $r->content_type('text/html');
1729: $r->send_http_header;
1730:
1731: $r->print('<html><head><title>LON-CAPA Publishing</title></head>');
1732: $r->print(&Apache::loncommon::bodytag('Resource Publication'));
1733:
1734:
1735: my $thisfn=$fn;
1736:
1737: my $thistarget=$thisfn;
1738:
1739: $thistarget=~s/^\/home/$targetdir/;
1740: $thistarget=~s/\/public\_html//;
1741:
1742: my $thisdistarget=$thistarget;
1743: $thisdistarget=~s/^\Q$docroot\E//;
1744:
1745: my $thisdisfn=$thisfn;
1746: $thisdisfn=~s/^\/home\/\Q$cuname\E\/public_html\///;
1747:
1748: if ($fn=~/\/$/) {
1749: # -------------------------------------------------------- This is a directory
1750: &publishdirectory($r,$fn,$thisdisfn);
1751: $r->print('<hr><font size="+2">Done</font><br><a href="/priv/'
1752: .$cuname.'/'.$thisdisfn
1753: .'">Return to Directory</a>');
1754:
1755:
1756: } else {
1757: # ---------------------- Evaluate individual file, and then output information.
1758: $thisfn=~/\.(\w+)$/;
1759: my $thistype=$1;
1760: my $thisembstyle=&Apache::loncommon::fileembstyle($thistype);
1761: $r->print('<h2>Publishing '.
1762: &Apache::loncommon::filedescription($thistype).' <tt>');
1763:
1764: $r->print(<<ENDCAPTION);
1765: <a href='javascript:void(window.open("/~$cuname/$thisdisfn","cat","height=300,width=500,scrollbars=1,resizable=1,menubar=0,location=1"))'>
1766: $thisdisfn</a>
1767: ENDCAPTION
1768: $r->print(
1769: '</tt></h2><b>Target:</b> <tt>'.$thisdistarget.'</tt><br />');
1770:
1771: if (($cuname ne $ENV{'user.name'}) || ($cudom ne $ENV{'user.domain'})) {
1772: $r->print('<h3><font color="red">Co-Author: '.$cuname.' at '.$cudom.
1773: '</font></h3>');
1774: }
1775:
1776: if (&Apache::loncommon::fileembstyle($thistype) eq 'ssi') {
1777: $r->print(<<ENDDIFF);
1778: <br />
1779: <a href='javascript:void(window.open("/adm/diff?filename=/~$cuname/$thisdisfn&versiontwo=priv","cat","height=300,width=500,scrollbars=1,resizable=1,menubar=0,location=1"))'>Diffs with Current Version</a><br />
1780: ENDDIFF
1781: }
1782:
1783: # ------------------ Publishing from $thisfn to $thistarget with $thisembstyle.
1784:
1785: unless ($ENV{'form.phase'} eq 'two') {
1786: my ($outstring,$error)=&publish($thisfn,$thistarget,$thisembstyle);
1787: $r->print('<hr />'.$outstring);
1788: } else {
1789: $r->print('<hr />');
1790: &phasetwo($r,$thisfn,$thistarget,$thisembstyle,$thisdistarget);
1791: }
1792: }
1793: $r->print('</body></html>');
1794:
1795: return OK;
1796: }
1797:
1798: 1;
1799: __END__
1800:
1801: =pod
1802:
1803: =back
1804:
1805: =back
1806:
1807: =cut
1808:
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