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[LON-CAPA] /
loncom /
lontrans.pm
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1.20:
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Sat Apr 14 02:29:51 2018 UTC (6 years ago) by
raeburn
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- Bug 6754 LON-CAPA as LTI Provider
- Original LTI launch of LON-CAPA is for a resource, a map, or an entire
course, and display is for iframe, tab or window; retain this in %env.
1: # The LearningOnline Network
2: # URL translation for User Files
3: #
4: # $Id: lontrans.pm,v 1.20 2018/04/14 02:29:51 raeburn 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: package Apache::lontrans;
30:
31: use strict;
32: use Apache::Constants qw(:common :remotehost REDIRECT :http);
33: use Apache::lonnet;
34: use Apache::File();
35: use LONCAPA qw(:DEFAULT :match);
36:
37: sub handler {
38: my $r = shift;
39: # FIXME line remove when mod_perl fixes BUG#4948
40: $r->notes->set('error-notes' => '');
41: if ($r->uri =~ m{^/adm/lti/(.+)$}) {
42: my $realuri = $1;
43: my %user;
44: my $handle = &Apache::lonnet::check_for_valid_session($r,undef,\%user);
45: if (($handle ne '') && ($user{'lti'})) {
46: if ($realuri =~ m{^uploaded/$match_domain/$match_courseid/(default|supplemental)(|_\d+)\.(?:sequence|page)___\d+___.+$}) {
47: if ($user{'ltiuri'} ne $realuri) {
48: &Apache::lonnet::appenv({'request.lti.uri' => $realuri});
49: }
50: my ($map,$resid,$url) = split(/___/,$realuri);
51: $realuri = &Apache::lonnet::clutter($url).'?symb='.$realuri;
52: } elsif ($realuri =~ m{^tiny/$match_domain/\w+$}) {
53: $realuri = '/'.$realuri;
54: if ($user{'ltiuri'} ne $realuri) {
55: &Apache::lonnet::appenv({'request.lti.uri' => $realuri});
56: }
57: } elsif ($realuri =~ m{($match_domain)/($match_courseid)$}) {
58: $realuri = '/adm/navmaps';
59: if ($user{'ltiuri'} ne '') {
60: &Apache::lonnet::delenv('request.lti.uri');
61: }
62: } else {
63: $realuri = '/'.$realuri;
64: if ($realuri =~ m{/default_\d+\.sequence$}) {
65: if ($user{'ltiuri'} ne $realuri) {
66: &Apache::lonnet::appenv({'request.lti.uri' => $realuri});
67: }
68: $realuri .= (($realuri =~/\?/)?'&':'?').'navmap=1';
69: }
70: }
71: my $host = $r->headers_in->get('Host');
72: if ($host) {
73: my $protocol = 'http';
74: if ($r->get_server_port == 443) {
75: $protocol = 'https';
76: }
77: my $location = $protocol.'://'.$host.$realuri;
78: $r->headers_out->set(Location => $location);
79: return REDIRECT;
80: }
81: }
82: } elsif ($r->uri =~ m{^/+tiny/+($match_domain)/+(\w+)$}) {
83: my ($cdom,$key) = ($1,$2);
84: if (&Apache::lonnet::domain($cdom) ne '') {
85: my %user;
86: my $handle = &Apache::lonnet::check_for_valid_session($r,undef,\%user);
87: if ($handle ne '') {
88: my $lonidsdir=$r->dir_config('lonIDsDir');
89: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
90: if ($env{'request.course.id'}) {
91: my $tinyurl;
92: my ($result,$cached)=&Apache::lonnet::is_cached_new('tiny',$cdom."\0".$key);
93: if (defined($cached)) {
94: $tinyurl = $result;
95: } else {
96: my $configuname = &Apache::lonnet::get_domainconfiguser($cdom);
97: my %currtiny = &Apache::lonnet::get('tiny',[$key],$cdom,$configuname);
98: if ($currtiny{$key} ne '') {
99: $tinyurl = $currtiny{$key};
100: &Apache::lonnet::do_cache_new('tiny',$cdom."\0".$key,$currtiny{$key},600);
101: }
102: }
103: if ($tinyurl ne '') {
104: my ($cnum,$symb) = split(/\&/,$tinyurl);
105: if (($cnum =~ /^$match_courseid$/) &&
106: (&Apache::lonnet::homeserver($cnum,$cdom) ne 'no_host')) {
107: if ($env{'request.course.id'} eq $cdom.'_'.$cnum) {
108: my ($map,$resid,$url) = &Apache::lonnet::decode_symb($symb);
109: if (&Apache::lonnet::is_on_map($url)) {
110: my $realuri;
111: if ((&Apache::lonnet::EXT('resource.0.hiddenresource',$symb) =~ /^yes$/i) &&
112: (!$env{'request.role.adv'})) {
113: $env{'user.error.msg'}=$r->uri.':bre:1:1:Access to resource denied';
114: return HTTP_NOT_ACCEPTABLE;
115: }
116: if ((&Apache::lonnet::EXT('resource.0.encrypturl',$symb) =~ /^yes$/i) &&
117: (!$env{'request.role.adv'})) {
118: $realuri = &Apache::lonenc::encrypted(&Apache::lonnet::clutter($url));
119: if (($url =~ /\.sequence$/) &&
120: ($env{'course.'.$env{'request.course.id'}.'.type'} ne 'Placement')) {
121: $realuri .= '?navmap=1';
122: } else {
123: $realuri .= '?symb='.&Apache::lonenc::encrypted($symb);
124: }
125: } else {
126: $realuri = &Apache::lonnet::clutter($url);
127: if (($url =~ /\.sequence$/) &&
128: ($env{'course.'.$env{'request.course.id'}.'.type'} ne 'Placement')) {
129: $realuri .= '?navmap=1';
130: } else {
131: $realuri .= '?symb='.$symb;
132: }
133: }
134: my $host = $r->headers_in->get('Host');
135: if ($host) {
136: my $protocol = 'http';
137: if ($r->get_server_port == 443) {
138: $protocol = 'https';
139: }
140: my $location = $protocol.'://'.$host.$realuri;
141: $r->headers_out->set(Location => $location);
142: return REDIRECT;
143: }
144: }
145: }
146: }
147: }
148: }
149: }
150: }
151: } elsif ($r->uri=~m{^/raw/}) {
152: my $host = $r->headers_in->get('Host');
153: if ($host) {
154: unless ($host =~ /^internal\-/) {
155: my $remote_ip = $r->get_remote_host();
156: my $lonhost = $r->dir_config('lonHostID');
157: if (&redirect_raw($remote_ip,$lonhost)) {
158: my $location = 'https://internal-'.$host.$r->uri;
159: $r->headers_out->set(Location => $location);
160: return REDIRECT;
161: }
162: }
163: }
164: }
165: if ($r->uri=~m|^(/raw)?/uploaded/|) {
166: my $fn = $r->uri();
167: $fn=~s/^\/raw//;
168: my (undef,undef,$udom,$uname,@ufile)=split(/\//,$fn);
169: if (@ufile) { $ufile[-1]=~s/^[\~\.]+//; }
170: my $chome=&Apache::lonnet::homeserver($uname,$udom);
171: my $allowed=0;
172: my @ids=&Apache::lonnet::current_machine_ids();
173: foreach my $id (@ids) { if ($id eq $chome) { $allowed=1; } }
174: if ($allowed) {
175: $r->filename(&propath($udom,$uname).
176: '/userfiles/'.(join('/',@ufile)));
177: }
178: return OK;
179: } else {
180: return DECLINED;
181: }
182: }
183:
184: sub redirect_raw {
185: my ($remote_ip,$lonhost) = @_;
186: my @remhostids = &Apache::lonnet::get_hosts_from_ip($remote_ip);
187: my $redirect;
188: while (@remhostids) {
189: my $try_server = pop(@remhostids);
190: my $remhostname = &Apache::lonnet::hostname($try_server);
191: if ($remhostname) {
192: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
193: my ($remmajor,$remminor) = ($remoterev =~ /^(\d+)\.(\d+)/);
194: if (($remmajor > 2) || (($remmajor == 2) && $remminor >= 12)) {
195: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
196: if (ref($internet_names) eq 'ARRAY') {
197: my $intdom = &Apache::lonnet::internet_dom($lonhost);
198: unless (grep(/^\Q$intdom\E$/,@{$internet_names})) {
199: my $lonhostname = &Apache::lonnet::hostname($lonhost);
200: my $serverhomeID = &Apache::lonnet::get_server_homeID($lonhostname);
201: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
202: my %domdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
203: my $replication = $domdefaults{'replication'};
204: if (ref($replication) eq 'HASH') {
205: my $remhomeID = &Apache::lonnet::get_server_homeID($remhostname);
206: my $remhomedom = &Apache::lonnet::host_domain($remhomeID);
207: my $remprimary = &Apache::lonnet::domain($remhomedom,'primary');
208: my $remintdom = &Apache::lonnet::internet_dom($remprimary);
209: if (ref($replication->{'certreq'}) eq 'ARRAY') {
210: if (grep(/^\Q$remintdom\E$/,@{$replication->{'certreq'}})) {
211: $redirect = 1;
212: } else {
213: $redirect = 0;
214: }
215: }
216: if (ref($replication->{'nocertreq'}) eq 'ARRAY') {
217: if (grep(/^\Q$remintdom\E$/,@{$replication->{'nocertreq'}})) {
218: $redirect = 0;
219: } else {
220: $redirect = 1;
221: }
222: }
223: }
224: }
225: }
226: }
227: last;
228: }
229: }
230: return $redirect;
231: }
232:
233: 1;
234: __END__
235:
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