Annotation of loncom/publisher/lonretrieve.pm, revision 1.49
1.1 www 1: # The LearningOnline Network with CAPA
2: # Handler to retrieve an old version of a file
3: #
1.49 ! raeburn 4: # $Id: lonretrieve.pm,v 1.48 2011/12/23 17:21:18 www Exp $
1.15 albertel 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: #
1.16 harris41 29: ###
1.1 www 30:
1.35 jms 31: =head1 NAME
32:
33: Apache::lonretrieve - retrieves an old version of a file
34:
35: =head1 SYNOPSIS
36:
37: Invoked by /etc/httpd/conf/srm.conf:
38:
39: <Location /adm/retrieve>
40: PerlAccessHandler Apache::lonacc
41: SetHandler perl-script
42: PerlHandler Apache::lonretrieve
43: ErrorDocument 403 /adm/login
44: ErrorDocument 404 /adm/notfound.html
45: ErrorDocument 406 /adm/unauthorized.html
46: ErrorDocument 500 /adm/errorhandler
47: </Location>
48:
49: =head1 INTRODUCTION
50:
51: This module retrieves an old published version of a file.
52:
53: This is part of the LearningOnline Network with CAPA project
54: described at http://www.lon-capa.org.
55:
56: =head1 HANDLER SUBROUTINE
57:
58: This routine is called by Apache and mod_perl.
59:
60: =over 4
61:
62: =item *
63:
64: Get query string for limited number of parameters
65:
66: =item *
67:
68: Start page output
69:
70: =item *
71:
72: print phase relevant output
73:
74: =item *
75:
76: (phase one is to select version; phase two retrieves version)
77:
78: =back
79:
80: =head1 OTHER SUBROUTINES
81:
82: =over 4
83:
84: =item *
85:
86: phaseone() : Interface for selecting previous version.
87:
88: =item *
89:
90: phasetwo() : Interface for presenting specified version.
91:
92: =back
93:
94: =cut
95:
1.1 www 96: package Apache::lonretrieve;
97:
98: use strict;
99: use Apache::File;
100: use File::Copy;
101: use Apache::Constants qw(:common :http :methods);
1.16 harris41 102: use Apache::loncommon();
1.23 www 103: use Apache::lonlocal;
1.27 albertel 104: use Apache::lonnet;
1.34 albertel 105: use LONCAPA();
1.1 www 106:
1.16 harris41 107: # ------------------------------------ Interface for selecting previous version
1.2 www 108: sub phaseone {
109: my ($r,$fn,$uname,$udom)=@_;
110:
1.46 raeburn 111: my $urldir = "/res/$udom/$uname".$fn;
112: my $resfn = $r->dir_config('lonDocRoot').$urldir;
1.3 www 113:
1.46 raeburn 114: $urldir =~ s{[^/]+$}{};
115: my $resdir = $r->dir_config('lonDocRoot').$urldir;
1.2 www 116:
1.31 albertel 117: my ($main,$suffix,$is_meta) = &get_file_info($fn);
118:
1.6 www 119: if (-e $resfn) {
1.48 www 120: $r->print('<form action="/adm/retrieve?inhibitmenu=yes" method="post">'.
1.45 raeburn 121: '<input type="hidden" name="filename" value="/priv/'.$udom.'/'.$uname.$fn.'" />'.
1.32 albertel 122: '<input type="hidden" name="phase" value="two" />'.
123: &Apache::loncommon::start_data_table().
124: &Apache::loncommon::start_data_table_header_row().
125: '<th>'.&mt('Select').'</th>'.
126: '<th>'.&mt('Version').'</th>'.
127: '<th>'.&mt('Published on ...').'</th>');
128: if (!$is_meta) {
129: $r->print('<th>'.&mt('Metadata').'</th>');
130: }
131: if ($is_meta
132: || &Apache::loncommon::fileembstyle($suffix) eq 'ssi') {
133: $r->print('<th>'.&mt('Diffs').'</th>');
134: }
135: $r->print(&Apache::loncommon::end_data_table_header_row());
136:
137: opendir(DIR,$resdir);
138: my @files = grep(/^\Q$main\E\.(\d+)\.\Q$suffix\E$/,readdir(DIR));
139: @files = sort {
140: my ($aver) = ($a=~/^\Q$main\E\.(\d+)\.\Q$suffix\E$/);
141: my ($bver) = ($b=~/^\Q$main\E\.(\d+)\.\Q$suffix\E$/);
142: return $aver <=> $bver;
143: } (@files);
144: closedir(DIR);
145:
146: foreach my $filename (@files) {
147: if ($filename=~/^\Q$main\E\.(\d+)\.\Q$suffix\E$/) {
148: my $version=$1;
149: my $rmtime=&Apache::lonnet::metadata($resdir.'/'.$filename,'lastrevisiondate');
150: $r->print(&Apache::loncommon::start_data_table_row().
151: '<td><input type="radio" name="version" value="'.
1.41 bisitz 152: $version.'" /></td><td>'.&mt('Previously published version').' '.$version.'</td>'.
153: '<td>'.&Apache::lonlocal::locallocaltime($rmtime).'</td>');
1.32 albertel 154:
155: if (!$is_meta) {
1.48 www 156: $r->print('<td>'.
157: &Apache::loncommon::modal_link($urldir.$filename.'.meta',
158: &mt('Metadata Version [_1]',$version),550,450).'</td>');
1.32 albertel 159: }
160: if ($is_meta
161: || &Apache::loncommon::fileembstyle($suffix) eq 'ssi') {
1.48 www 162: $r->print('<td>'.
163: &Apache::loncommon::modal_link(
164: '/adm/diff?filename=/priv/'.$udom,'/'.$uname.$fn.
165: '&versiontwo=priv&versionone='.$version,
166: &mt('Diffs with Version [_1]',$version),550,450).
167: '</td>');
1.32 albertel 168: }
169: $r->print(&Apache::loncommon::end_data_table_row());
170: }
171: }
172: closedir(DIR);
173: my $rmtime=&Apache::lonnet::metadata($resfn,'lastrevisiondate');
174: $r->print(&Apache::loncommon::start_data_table_row().
175: '<td><input type="radio" name="version" value="new" /></td>'.
1.41 bisitz 176: '<td><b>'.&mt('Currently published version').'</b></td>'.
177: '<td>'.&Apache::lonlocal::locallocaltime($rmtime).'</td>'
178: );
1.32 albertel 179: if (!$is_meta) {
1.48 www 180: $r->print('<td>',
181: &Apache::loncommon::modal_link($urldir.$main.'.'.$suffix.'.meta',
182: &mt('Metadata current version'),550,450).'</td>');
1.32 albertel 183: }
184: if ($is_meta
185: || &Apache::loncommon::fileembstyle($suffix) eq 'ssi') {
1.48 www 186: $r->print('<td>'.
187: &Apache::loncommon::modal_link(
188: '/adm/diff?filename=/priv/'.
1.45 raeburn 189: $udom.'/'.$uname.$fn.
1.48 www 190: '&versiontwo=priv',
191: &mt('Diffs with current Version'),550,450).
192: '</td>');
1.32 albertel 193: }
194: $r->print(&Apache::loncommon::end_data_table_row().
195: &Apache::loncommon::end_data_table().
1.33 albertel 196: '<p>'.'<span class="LC_warning">'.
1.36 bisitz 197: &mt('Retrieval of an old version will overwrite the file currently in construction space.').'</span></p>');
1.33 albertel 198: if (!$is_meta) {
199: $r->print('<p>'.'<span class="LC_warning">'.
1.36 bisitz 200: &mt('This will only retrieve the resource. If you want to retrieve the metadata, you will need to do that separately.').
1.33 albertel 201: '</span></p>');
202: }
1.41 bisitz 203: $r->print('<input type="submit" value="'.&mt('Retrieve selected Version').'" /></form>');
1.32 albertel 204: } else {
1.36 bisitz 205: $r->print('<p class="LC_warning">'.&mt('No previous versions published.').'</p>');
1.31 albertel 206: }
1.41 bisitz 207:
1.2 www 208: }
1.1 www 209:
1.16 harris41 210: # ---------------------------------- Interface for presenting specified version
1.4 www 211: sub phasetwo {
212: my ($r,$fn,$uname,$udom)=@_;
1.27 albertel 213: if ($env{'form.version'}) {
214: my $version=$env{'form.version'};
1.4 www 215: if ($version eq 'new') {
1.23 www 216: $r->print('<h3>'.&mt('Retrieving current (most recent) version').'</h3>');
1.4 www 217: } else {
1.23 www 218: $r->print('<h3>'.&mt('Retrieving old version').' '.$version.'</h3>');
1.4 www 219: }
1.31 albertel 220: my ($main,$suffix,$is_meta) = &get_file_info($fn);
221:
1.4 www 222: my $logfile;
1.46 raeburn 223: my $ctarget=$r->dir_config('lonDocRoot')."/priv/$udom/$uname".$fn;
1.5 www 224: my $vfn=$fn;
225: if ($version ne 'new') {
1.31 albertel 226: $vfn=~s/\.(\Q$suffix\E)$/\.$version\.$1/;
1.5 www 227: }
1.31 albertel 228:
1.46 raeburn 229: my $csource=$r->dir_config('lonDocRoot')."/res/$udom/$uname".$vfn;
1.31 albertel 230:
231: my $logname = $ctarget;
232: if ($is_meta) { $logname =~ s/\.meta$//; }
233: $logname = $ctarget.'.log';
234: unless ($logfile=Apache::File->new('>>'.$logname)) {
1.36 bisitz 235: $r->print('<span class="LC_error">'
236: .&mt('No write permission to user directory, FAIL')
237: .'</span>');
1.4 www 238: }
239: print $logfile
240: "\n\n================= Retrieve ".localtime()." ================\n".
1.5 www 241: "Version: $version\nSource: $csource\nTarget: $ctarget\n";
1.23 www 242: $r->print('<p>'.&mt('Copying file').': ');
1.31 albertel 243: if (copy($csource,$ctarget)) {
1.36 bisitz 244: $r->print('<span class="LC_success">'
245: .&mt('ok')
246: .'</span>');
1.5 www 247: print $logfile "Copied sucessfully.\n\n";
1.48 www 248: $r->print(&Apache::lonhtmlcommon::scripttag('parent.location.reload();'));
1.5 www 249: } else {
250: my $error=$!;
1.36 bisitz 251: $r->print('<span class="LC_error">'
252: .&mt('Copy failed: [_1]',$error)
253: .'</span>');
1.5 www 254: print $logfile "Copy failed: $error\n\n";
255: }
1.4 www 256: } else {
1.36 bisitz 257: $r->print('<p class="LC_info">'.&mt('Please pick a version to retrieve:').'</p>');
1.4 www 258: &phaseone($r,$fn,$uname,$udom);
259: }
260: }
261:
1.31 albertel 262: sub get_file_info {
263: my ($fn) = @_;
264: my ($main,$suffix) = ($fn=~/\/([^\/]+)\.(\w+)$/);
265: my $is_meta=0;
266: if ($suffix eq 'meta') {
267: $is_meta = 1;
268: ($main,$suffix) = ($main=~/(.+)\.(\w+)$/);
269: $suffix .= '.meta';
270: }
271: return ($main,$suffix,$is_meta);
272: }
273:
1.16 harris41 274: # ---------------------------------------------------------------- Main Handler
1.1 www 275: sub handler {
276:
277: my $r=shift;
278:
279: my $fn;
1.14 www 280:
281:
282: # Get query string for limited number of parameters
283:
1.17 stredwic 284: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.18 www 285: ['filename']);
1.1 www 286:
1.27 albertel 287: if ($env{'form.filename'}) {
288: $fn=$env{'form.filename'};
1.46 raeburn 289: $fn =~ s{^https?\://[^/]+}{};
1.1 www 290: } else {
1.27 albertel 291: $r->log_reason($env{'user.name'}.' at '.$env{'user.domain'}.
1.2 www 292: ' unspecified filename for retrieval', $r->filename);
293: return HTTP_NOT_FOUND;
1.1 www 294: }
295:
296: unless ($fn) {
1.27 albertel 297: $r->log_reason($env{'user.name'}.' at '.$env{'user.domain'}.
1.2 www 298: ' trying to retrieve non-existing file', $r->filename);
1.1 www 299: return HTTP_NOT_FOUND;
300: }
301:
302: # ----------------------------------------------------------- Start page output
1.10 www 303: my $uname;
304: my $udom;
1.1 www 305:
1.49 ! raeburn 306: ($uname,$udom) = &Apache::lonnet::constructaccess($fn);
1.45 raeburn 307: unless (($uname ne '') && ($udom ne '')) {
1.10 www 308: $r->log_reason($uname.' at '.$udom.
1.27 albertel 309: ' trying to publish file '.$env{'form.filename'}.
1.10 www 310: ' ('.$fn.') - not authorized',
311: $r->filename);
312: return HTTP_NOT_ACCEPTABLE;
313: }
314:
1.23 www 315: &Apache::loncommon::content_type($r,'text/html');
1.1 www 316: $r->send_http_header;
317:
1.41 bisitz 318: # Breadcrumbs
319: &Apache::lonhtmlcommon::clear_breadcrumbs();
320: &Apache::lonhtmlcommon::add_breadcrumb({
321: 'text' => 'Construction Space',
1.47 raeburn 322: 'href' => &Apache::loncommon::authorspace($fn),
1.41 bisitz 323: });
324: &Apache::lonhtmlcommon::add_breadcrumb({
325: 'text' => 'Retrieve previous version',
326: 'href' => '',
327: });
328:
1.46 raeburn 329: my $londocroot = $r->dir_config('lonDocRoot');
330: my $trailfile = $fn;
331: $trailfile =~ s{^/(priv/)}{$londocroot/$1};
332:
1.41 bisitz 333: $r->print(&Apache::loncommon::start_page('Retrieve Published Resources')
334: .&Apache::lonhtmlcommon::breadcrumbs()
335: .&Apache::loncommon::head_subbox(
1.46 raeburn 336: &Apache::loncommon::CSTR_pageheader($trailfile))
1.41 bisitz 337: );
1.1 www 338:
1.46 raeburn 339: $fn=~s{/priv/$LONCAPA::domain_re/$LONCAPA::username_re}{};
340:
1.40 bisitz 341: $r->print('<p>'
1.36 bisitz 342: .&mt('Retrieve previous versions of [_1]'
343: ,'<span class="LC_filename">'.$fn.'</span>')
1.40 bisitz 344: .'</p>');
1.10 www 345:
1.27 albertel 346: if (($uname ne $env{'user.name'}) || ($udom ne $env{'user.domain'})) {
1.42 www 347: $r->print('<p><span class="LC_info">'
1.40 bisitz 348: .&mt('Co-Author [_1]'
349: ,&Apache::loncommon::plainname($uname,$udom)
350: .' ('.$uname.':'.$udom.')')
351: .'</span></p>');
1.10 www 352: }
353:
1.1 www 354:
1.27 albertel 355: if ($env{'form.phase'} eq 'two') {
1.4 www 356: &phasetwo($r,$fn,$uname,$udom);
1.2 www 357: } else {
358: &phaseone($r,$fn,$uname,$udom);
359: }
1.1 www 360:
1.30 albertel 361: $r->print(&Apache::loncommon::end_page());
1.1 www 362: return OK;
363: }
1.7 www 364:
365: 1;
366: __END__
1.16 harris41 367:
368:
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