Annotation of loncom/interface/lonsource.pm, revision 1.30
1.1 taceyjo1 1: # The LearningOnline Network with CAPA
1.23 bisitz 2: # Source Code handler
1.1 taceyjo1 3: #
1.30 ! raeburn 4: # $Id: lonsource.pm,v 1.29 2012/10/29 17:38:56 raeburn Exp $
1.1 taceyjo1 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:
30:
31: package Apache::lonsource;
32:
33: use strict;
1.11 albertel 34: use Apache::lonnet;
1.1 taceyjo1 35: use Apache::loncommon();
36: use Apache::lonhtmlcommon();
37: use Apache::lonsequence();
38: use Apache::Constants qw(:common :http);
39: use Apache::lonmeta;
40: use Apache::File;
41: use Apache::lonlocal;
42: use HTML::Entities;
1.28 raeburn 43: use LONCAPA qw(:DEFAULT :match);
1.1 taceyjo1 44:
45: sub make_link {
1.4 taceyjo1 46: my ($filename, $listname) = @_;
1.18 albertel 47: my $sourcelink = "/adm/source?inhibitmenu=yes&filename=".$filename."&listname=".$listname;
1.2 albertel 48:
49: return $sourcelink;
1.1 taceyjo1 50: }
51:
52: sub stage_2 {
1.26 www 53: my ($r, $filename, $listname) = @_;
54: my ($author)=($filename=~/\/res\/[^\/]+\/([^\/]+)\//);
1.30 ! raeburn 55: $r->print(&Apache::loncommon::start_page('Copy Problem Source Code to Authoring Space')
1.21 bisitz 56: .&mt('Please enter the directory that you would like the source code to go into.')
57: .'<p>'
58: .&mt('Note: the path is in reference to the root of your construction space,'
59: .' and new directories will be automatically created.')
60: .'</p>');
1.13 www 61: $r->print('<form name="copy" action="/adm/source" target="_parent" method="post">
1.5 taceyjo1 62: <input type="hidden" name="filename" value="'.$filename.'" />
63: <input type="hidden" name="listname" value="'.$listname.'" />
64: <input type="hidden" name="action" value="copy_stage" />
1.21 bisitz 65: <input type="text" size="50" name="newpath" value="/'.&mt('shared_source').'/'.$author.'" />
66: <input type="submit" value="'.&mt('Copy').'" />
1.5 taceyjo1 67: </form>');
68: return OK;
1.4 taceyjo1 69: }
70:
1.26 www 71: sub copy_author {
1.4 taceyjo1 72: my $role;
73: my $domain;
74: my $author_name;
1.19 albertel 75: if ($env{'request.role'} =~ m{^ca\.}) {
1.11 albertel 76: ($role, $domain, $author_name) = split(/\//,$env{'request.role'});
1.4 taceyjo1 77: } else {
1.5 taceyjo1 78: $role = "au.";
1.11 albertel 79: $domain = $env{'user.domain'};
80: $author_name = $env{'user.name'};
1.5 taceyjo1 81: }
1.26 www 82: return ($role,$author_name,$domain);
83: }
84:
85:
86: sub copy_stage {
87: my ($r, $filename, $listname, $newpath) = @_;
88:
89: #Figure out if we are author or co-author
90: my ($role,$author_name,$domain)=©_author();
1.5 taceyjo1 91:
1.26 www 92: # Construct path to copy and filter out any possibly nasty stuff
1.27 raeburn 93: my $path_to_new_file = $r->dir_config('lonDocRoot').
94: "/priv/$domain/$author_name/$newpath/$listname";
1.26 www 95: $path_to_new_file=~s/\.\.//g;
96: $path_to_new_file=~s/\~//g;
97: $path_to_new_file=~s/\/+/\//g;
98:
1.5 taceyjo1 99: #Just checking again for access as we want to make sure that it is really ok now that we have the real path
100:
1.29 raeburn 101: my ($uname,$udom)= &Apache::lonnet::constructaccess($path_to_new_file);
1.20 albertel 102:
103: if (!$uname || !$udom) {
104: $r->print(&Apache::loncommon::start_page('Not Allowed'));
105: $r->print(&mt('Not allowed to create file [_1]', $path_to_new_file));
106: $r->print(&Apache::loncommon::end_page());
107: return;
1.4 taceyjo1 108: }
1.20 albertel 109:
110: #allowed
1.16 albertel 111: $r->print(&Apache::loncommon::start_page('Copying Source'));
1.5 taceyjo1 112: my $result = &Apache::loncfile::exists($uname, $udom, $path_to_new_file);
113: $r->print($result);
114: if(($result) && ($result =~ m|published|) ) {
1.26 www 115: &delete_copy_file($r, $newpath, $filename, $path_to_new_file, '1');
1.5 taceyjo1 116: } elsif(($result) && ($result =~ m|exists!|)) {
1.26 www 117: &confirm($r, $newpath, $filename, $path_to_new_file);
1.5 taceyjo1 118: } else {
1.26 www 119: ©_file($r, $newpath, $filename, $path_to_new_file);
1.5 taceyjo1 120: }
1.20 albertel 121:
122: $r->print(&Apache::loncommon::end_page());
1.4 taceyjo1 123: }
124:
125: sub confirm {
1.26 www 126: my ($r, $newpath, $filename, $path_to_new_file) = @_;
1.5 taceyjo1 127: $r->print("<b>Press delete to remove file and replace it with a copy of the source you are viewing</b><br /><br / >");
1.13 www 128: $r->print('<form name="delete_confirm" action="/adm/source" target="_parent" method="post">
1.5 taceyjo1 129: <input type="hidden" name="filename" value="'.$filename.'" />
130: <input type="hidden" name="path" value="'.$path_to_new_file.'" />
131: <input type="hidden" name="newpath" value="'.$newpath.'" />
132: <input type="hidden" name="action" value="delete_confirm" />
133:
134: <input type="submit" value="Delete" />
135: </form>');
1.4 taceyjo1 136: }
137:
1.6 taceyjo1 138: sub delete_copy_file {
1.26 www 139: my ($r, $newpath, $filename, $path_to_new_file, $type) = @_;
1.5 taceyjo1 140: if($type eq '1') {
1.23 bisitz 141: $r->print('<p><span class="LC_warning">'
142: .&mt('Cannot delete non-obsolete published file.')
143: .'</span><br />'
144: .&mt('Please use the code view in previous window to use shared code.')
145: .'<br /><br />');
146: $r->print('<input type="button" value="Close Window" name="close"'
1.24 raeburn 147: .' onclick="window.close()" />'
1.23 bisitz 148: .'</p>');
1.5 taceyjo1 149: } else {
150: if(-e $path_to_new_file) {
151: unless(unlink($path_to_new_file)) {
1.23 bisitz 152: $r->print('<p class="LC_error"">'.&mt('Error:').' '.$!.'</p>');
1.5 taceyjo1 153: return 0;
154: }
155: } else {
1.23 bisitz 156: $r->print('<p class="LC_error">'.&mt('No such file').'</p></form>');
1.5 taceyjo1 157: return 0;
158: }
1.26 www 159: ©_file($r, $newpath, $filename, $path_to_new_file);
1.5 taceyjo1 160: }
1.1 taceyjo1 161: }
162:
1.4 taceyjo1 163: sub copy_file {
1.26 www 164: my ($r, $newpath, $filename, $path_to_new_file) = @_;
1.5 taceyjo1 165: $r->print("<b>Creating directories</b>");
1.26 www 166:
167: #Figure out if we are author or co-author
168: my ($role,$author_name,$domain)=©_author();
169:
1.27 raeburn 170: my $path = $r->dir_config('lonDocRoot')."/priv/$domain/$author_name/";
1.5 taceyjo1 171: my @directories = split(/\//,$newpath);
1.26 www 172:
1.5 taceyjo1 173: foreach my $now_checking (@directories) {
174: if($now_checking ne '') {
175: $path = $path.'/'.$now_checking;
176: if(-e $path) {} #More moving along, isn't recursion fun'
177:
178: else {
179: unless(mkdir($path, 02770)) {
1.23 bisitz 180: $r->print('<p class="LC_error">'.&mt('Error:').' '.$!.'</p>');
1.5 taceyjo1 181: return 0;
182: }
183: unless(chmod(02770, ($path))) {
1.23 bisitz 184: $r->print('<p class="LC_error"> '.&mt('Error:').' '.$!.'</p>');
1.5 taceyjo1 185: return 0;
186: }
187: }
188: } else { } #Just move along
189:
190: }
191: $r->print("<br /><b>Copying File</b>");
1.6 taceyjo1 192: my $problem_filename = $Apache::lonnet::perlvar{'lonDocRoot'}.$filename;
1.17 www 193: my $file_output = &includemeta(&Apache::lonnet::getfile($problem_filename),$filename);
1.5 taceyjo1 194: my $fs=Apache::File->new(">$path_to_new_file");
195: if (defined($fs)) {
196: print $fs $file_output;
197: }
198: $r->print("<br /><br />");
1.24 raeburn 199: $r->print('<input type="button" value="Close Window" name="close" onclick="window.close()" />');
1.5 taceyjo1 200: #Some 1.3'ish feature is to include the derivative feature, will go here..'
201: }
1.4 taceyjo1 202:
1.1 taceyjo1 203: sub print_item {
1.28 raeburn 204: my ($r,$filename,$listname) = @_;
205: my $file_output =
206: &includemeta(&Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonDocRoot'}.$filename),
207: $filename);
208: $r->print(&Apache::loncommon::start_page('View Source Code',undef,
209: {'only_body' => 1}));
210: if ($file_output ne '') {
211: my $access_to_cstr;
212: my $lonhost = $r->dir_config('lonHostID');
213: if (&Apache::lonnet::is_library($lonhost)) {
214: my @possdoms = &Apache::lonnet::current_machine_domains();
215: foreach my $dom (@possdoms) {
216: if ($env{"user.role.au./$dom/"}) {
217: $access_to_cstr = 1;
218: last;
219: }
220: }
221: unless ($access_to_cstr) {
222: foreach my $key (keys(%env)) {
223: if ($key =~ m{^\Quser.role.ca./\E($match_domain)/}) {
224: my $adom = $1;
225: if (grep(/^\Q$adom\E$/,@possdoms)) {
226: $access_to_cstr = 1;
227: last;
228: }
229: }
230: }
231: }
232: if ($access_to_cstr) {
233: $r->print('
234: <form name="copy" action="/adm/source" target="_parent" method="post">
235: <input type="button" value="'.&mt('Close Window').'" name="close" onclick="window.close();" />
236: <input type="hidden" name="filename" value="'.$filename.'" />
237: <input type="hidden" name="listname" value="'.$listname.'" />
238: <input type="hidden" name="action" value="stage2" />
1.30 ! raeburn 239: <input type="submit" value="'.&mt('Copy to Authoring Space').'" />
1.28 raeburn 240: </form><hr />
241: ');
242: } else {
243: $r->print('<p><span class="LC_info">'.
244: &mt('Source code is displayed, but you can not copy to Authoring Space, as you do not have an author or co-author role on this server.').
245: '</span></p><a href="javascript:window.close();">'.&mt('Close Window').
246: '</a><br /><hr />'
247: );
248: }
249: } else {
250: $r->print('<p><span class="LC_info">'.
251: &mt('Source code is displayed, but you can not copy to Authoring Space on this server.').
252: '</span></p><a href="javascript:window.close();">'.&mt('Close Window').
253: '</a><br /><hr />'
254: );
255:
256: }
257: my $count=0;
258: my $maxlength=-1;
259: foreach (split ("\n", $file_output)) {
260: $count+=int(length($_)/79);
261: $count++;
262: if (length($_) > $maxlength) {
263: $maxlength = length($_);
264: }
1.5 taceyjo1 265: }
1.28 raeburn 266: my $rows = $count;
267: my $cols = $maxlength;
268: $r->print('<form name="showsrc" action="" method="post" onsubmit="return false">'."\n".
269: '<textarea rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
270: &HTML::Entities::encode($file_output,'<>&"').'</textarea></form>');
271: } else {
272: $r->print('<p class="LC_warning">'.
273: &mt('Unable to retrieve file contents.').
274: '</p><a href="javascript:window.close();">'.&mt('Close Window').'</a>'
275: );
1.5 taceyjo1 276: }
1.28 raeburn 277: $r->print(&Apache::loncommon::end_page());
278: return;
1.1 taceyjo1 279: }
280:
1.17 www 281: sub includemeta {
282: my ($file_output,$orgfilename)=@_;
283: my $escfilename=&escape($orgfilename);
284: my $copytime=time;
285: if ($file_output=~/\<meta\s*name\=\"isbasedonres\"/i) {
286: $file_output=~s/(\<meta\s*name\=\"isbasedonres\"\s*content\=\"[^\"]*)\"/$1\,\Q$escfilename\E\"/i;
287: } else {
288: $file_output=~s/(\<(?:html|problem)[^\>]*\>)/$1\n\<meta name=\"isbasedonres\" content=\"\Q$escfilename\E\" \/\>/i;
289: }
290: if ($file_output=~/\<meta\s*name\=\"isbasedontime\"/i) {
291: $file_output=~s/(\<meta\s*name\=\"isbasedontime\"\s*content\=\"[^\"]*)\"/$1\,\Q$copytime\E\"/i;
292: } else {
293: $file_output=~s/(\<(?:html|problem)[^\>]*\>)/$1\n\<meta name=\"isbasedontime\" content=\"\Q$copytime\E\" \/\>/i;
294: }
1.28 raeburn 295: if ($file_output eq '-1') {
296: return;
297: } else {
298: return $file_output;
299: }
1.17 www 300: }
1.1 taceyjo1 301:
1.5 taceyjo1 302: sub handler {
1.2 albertel 303: my $r=shift;
1.3 www 304: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.5 taceyjo1 305: ['filename','listname']);
1.11 albertel 306: my $filename = $env{'form.filename'};
307: my $listname = $env{'form.listname'};
1.3 www 308: my $source = &Apache::lonnet::metadata($filename,'sourceavail');
309: if ($source ne 'open') {
1.11 albertel 310: $env{'user.error.msg'}="$filename:cre:1:1:Source code not available";
1.5 taceyjo1 311: return HTTP_NOT_ACCEPTABLE;
1.28 raeburn 312: }
313: unless (&Apache::lonnet::allowed('bre',$filename)) {
1.11 albertel 314: $env{'user.error.msg'}="$filename:bre:1:1:Access to resource denied";
1.5 taceyjo1 315: return HTTP_NOT_ACCEPTABLE;
1.28 raeburn 316: }
317: unless (&Apache::lonnet::allowed('cre','/')) {
318: $env{'user.error.msg'}="$filename:cre:1:1:Access to source code denied";
319: return HTTP_NOT_ACCEPTABLE;
320: }
1.20 albertel 321:
322: &Apache::loncommon::content_type($r,'text/html');
323: $r->send_http_header;
324:
1.11 albertel 325: if ($env{'form.action'} eq 'stage2') {
1.28 raeburn 326: &stage_2($r,$filename,$listname);
1.11 albertel 327: } elsif($env{'form.action'} eq 'copy_stage') {
1.28 raeburn 328: ©_stage($r,$filename,$listname,$env{'form.newpath'});
1.11 albertel 329: } elsif($env{'form.action'} eq 'delete_confirm') {
1.28 raeburn 330: &delete_copy_file($r,$env{'form.newpath'},$filename, $env{'form.path'}, '0');
1.6 taceyjo1 331: } else {
1.28 raeburn 332: &print_item($r,$filename,$listname);
1.5 taceyjo1 333: }
1.2 albertel 334: return OK;
1.1 taceyjo1 335: }
336:
337: 1;
1.5 taceyjo1 338:
339:
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