Annotation of loncom/homework/daxesave.pm, revision 1.8
1.1 damieng 1: # The LearningOnline Network
2: # Convert and save a problem from Daxe.
3: #
1.8 ! raeburn 4: # $Id: daxesave.pm,v 1.7 2023/08/28 18:58:44 raeburn Exp $
1.1 damieng 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: package Apache::daxesave;
1.6 raeburn 31: use strict;
1.1 damieng 32:
1.6 raeburn 33: use Apache::Constants qw(:common);
1.1 damieng 34: use Apache::lonnet;
35: use Try::Tiny;
36: use File::Copy;
37:
38: use Apache::lonacc;
39: use Apache::loncommon;
40: use Apache::xml_to_loncapa;
41:
42: sub handler {
43: my $request = shift;
44:
1.2 damieng 45: $request->content_type('text/plain');
46:
1.3 damieng 47: # path should be in the form "/daxeopen/priv/..."
1.7 raeburn 48: # or "/daxeopen/uploaded/$cdom/$cnum/(docs|supplemental)/(default|\d+)/\d+/"
1.3 damieng 49: my $path = $env{'form.path'};
1.1 damieng 50: $path =~ s/^\/daxeopen//;
51:
1.3 damieng 52: my $allowed = 0;
1.7 raeburn 53: my ($cdom,$cnum);
54: if ($path =~ m{^/priv/}) {
1.3 damieng 55: my ($ownername,$ownerdom,$ownerhome) =
1.7 raeburn 56: &Apache::lonnet::constructaccess($path);
1.3 damieng 57: if (($ownername ne '') && ($ownerdom ne '') && ($ownerhome ne '')) {
58: unless ($ownerhome eq 'no_host') {
59: my @hosts = &Apache::lonnet::current_machine_ids();
60: if (grep(/^\Q$ownerhome\E$/,@hosts)) {
61: $allowed = 1;
62: }
63: }
64: }
1.7 raeburn 65: } elsif ($path =~ m|^/uploaded/|) {
1.3 damieng 66: if ($env{'user.name'} ne '' && $env{'user.domain'} ne '' && $env{'request.course.id'}) {
67: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
68: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1.4 damieng 69: if ($path =~ m|^/uploaded/\Q$cdom\E/\Q$cnum\E/| && $path !~ /\.\./) {
1.3 damieng 70: if (&Apache::lonnet::allowed('mdc', $env{'request.course.id'})) {
71: $allowed = 1;
72: }
1.1 damieng 73: }
74: }
75: }
76: unless ($allowed) {
1.2 damieng 77: $request->log_reason("Unauthorized path: $path", $path);
78: $request->print("error\nUnauthorized path: $path");
79: $request->status(403);
80: return OK;
1.1 damieng 81: }
82:
1.7 raeburn 83: if ($path =~ m{^/priv/}) {
84: my $newpath = &Apache::lonnet::filelocation('', $path);
85: my $contents = $env{'form.file'};
1.1 damieng 86:
1.7 raeburn 87: my $mode;
88: if ($path =~ /\.(task|problem|exam|quiz|assess|survey|library|xml|html|htm|xhtml|xhtm)$/) {
89: try {
90: $contents = &Apache::xml_to_loncapa::convert_file($contents);
91: } catch {
92: $request->print("error\nconvert failed for $path: $_");
93: return OK;
94: };
95: $mode = '>:encoding(UTF-8)';
96: } else {
97: $mode = '>';
98: }
99:
100: my $filebak = $newpath.".bak";
101: if (-e $newpath) {
102: copy($newpath, $filebak); # errors ignored
103: }
104: if (open(my $out, $mode, $newpath)) {
105: print $out $contents;
106: close($out);
107: $request->print("ok\n");
108: } else {
109: $request->print("error\nFailed to open file to save $path");
110: }
111: } elsif ($path =~ m{^/uploaded/}) {
112: my ($unauthorized,$unsupported);
113: if ($path =~ m{^\Q/uploaded/$cdom/$cnum/\E(docs|supplemental)/(default|\d+)/(\d+)/(.+)$}) {
114: my ($type,$folder,$rid,$fname) = ($1,$2,$3,$4);
115: my $referrer = $request->headers_in->{'Referer'};
116: if ($referrer =~ m{\Qfile=/daxeopen/uploaded/$cdom/$cnum/$type/$folder/$rid/\E}) {
117: if ($fname =~ /\.(html|htm|xhtml|xhtm)$/) {
118: try {
119: $env{'form.file'} = &Apache::xml_to_loncapa::convert_file($env{'form.file'});
120: } catch {
121: $request->print("error\nconvert failed for $fname: $_");
122: return OK;
123: }
124: } elsif ($fname =~ /\.(task|problem|exam|quiz|assess|survey|library|xml)$/) {
125: $unsupported = $1;
126: }
127: unless ($unsupported) {
1.8 ! raeburn 128: my $url = &Apache::lonnet::userfileupload('file','daxesave',"$type/$folder/$rid",
! 129: undef,undef,undef,$cnum,$cdom);
1.7 raeburn 130: if ($url =~ m{^/uploaded/$cdom/$cnum/$type/$folder/$rid/}) {
131: $request->print("ok\n");
132: } else {
133: $request->print("error\nFailed to save uploaded file: $fname");
134: }
135: }
136: } else {
137: $unauthorized = 1;
138: }
139: } else {
140: $unauthorized = 1;
141: }
142: if ($unauthorized) {
143: $request->log_reason("Unauthorized path: $path", $path);
144: $request->print("error\nUnauthorized path: $path");
145: $request->status(403);
146: } elsif ($unsupported) {
147: $request->log_reason("File extension: $unsupported -- not allowed for upload to course", $path);
148: $request->print("error\nFile extension: $unsupported -- not allowed for upload to course");
149: $request->status(403);
150: }
1.6 raeburn 151: }
1.1 damieng 152: return OK;
153: }
154:
155: 1;
156: __END__
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