Annotation of loncom/lontrans.pm, revision 1.40
1.1 www 1: # The LearningOnline Network
2: # URL translation for User Files
3: #
1.40 ! raeburn 4: # $Id: lontrans.pm,v 1.39 2022/06/18 02:10:19 raeburn Exp $
1.1 www 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;
1.30 raeburn 32: use Apache::Constants qw(:common :remotehost);
1.18 raeburn 33: use Apache::lonnet;
1.30 raeburn 34: use Apache::loncommon;
1.1 www 35: use Apache::File();
1.15 raeburn 36: use LONCAPA qw(:DEFAULT :match);
1.2 www 37:
1.1 www 38: sub handler {
39: my $r = shift;
1.25 raeburn 40: # FIXME line remove when mod_perl fixes BUG#4948
1.12 albertel 41: $r->notes->set('error-notes' => '');
1.28 raeburn 42: my $hdrhost = $r->headers_in->get('Host');
1.25 raeburn 43: if ($r->uri=~m{^/raw/}) {
1.28 raeburn 44: if ($hdrhost) {
45: unless ($hdrhost =~ /^internal\-/) {
1.27 raeburn 46: my $remote_ip = &Apache::lonnet::get_requestor_ip($r,REMOTE_NOLOOKUP,1);
1.16 raeburn 47: my $lonhost = $r->dir_config('lonHostID');
48: if (&redirect_raw($remote_ip,$lonhost)) {
1.28 raeburn 49: my $location = 'https://internal-'.$hdrhost.$r->uri;
1.16 raeburn 50: $r->headers_out->set(Location => $location);
51: return REDIRECT;
1.15 raeburn 52: }
53: }
54: }
55: }
1.27 raeburn 56: my $alias = &Apache::lonnet::get_proxy_alias();
57: if ($alias) {
58: my $lonhost = $r->dir_config('lonHostID');
1.28 raeburn 59: my $hostname = &Apache::lonnet::hostname($lonhost);
1.38 raeburn 60: my $ssourl = '/adm/sso';
61: if ($r->dir_config('lonOtherAuthenUrl') ne '') {
62: $ssourl = $r->dir_config('lonOtherAuthenUrl');
63: }
1.28 raeburn 64: if (($hdrhost eq $alias) || ($hdrhost eq $hostname)) {
65: my $proxyinfo = &Apache::lonnet::get_proxy_settings($r->dir_config('lonDefDomain'));
1.29 raeburn 66: my ($vpnint,$vpnext);
1.28 raeburn 67: if (ref($proxyinfo) eq 'HASH') {
1.29 raeburn 68: $vpnint = $proxyinfo->{'vpnint'};
69: $vpnext = $proxyinfo->{'vpnext'};
1.28 raeburn 70: }
1.30 raeburn 71: my ($redirect,$remote_ip);
1.28 raeburn 72: if ($hdrhost eq $alias) {
1.30 raeburn 73: $remote_ip = &Apache::lonnet::get_requestor_ip($r,REMOTE_NOLOOKUP);
1.34 raeburn 74: if (($vpnext && &Apache::lonnet::ip_match($remote_ip,$vpnext)) &&
75: ($r->uri !~ m{^/adm/(lti|launch)/})) {
1.28 raeburn 76: $redirect = $hostname;
1.36 raeburn 77: }
1.38 raeburn 78: if ($r->uri eq $ssourl) {
79: if (&Apache::lonnet::alias_sso($lonhost)) {
1.28 raeburn 80: undef($redirect);
1.36 raeburn 81: } else {
82: $redirect = $hostname;
1.28 raeburn 83: }
84: }
1.36 raeburn 85: if ($redirect eq $hdrhost) {
86: undef($redirect);
87: }
1.28 raeburn 88: } elsif ($hdrhost eq $hostname) {
1.30 raeburn 89: $remote_ip = &Apache::lonnet::get_requestor_ip($r,REMOTE_NOLOOKUP,1);
1.29 raeburn 90: unless (($remote_ip eq '127.0.0.1') || ($remote_ip eq '::1') ||
1.28 raeburn 91: ($remote_ip eq &Apache::lonnet::get_host_ip($lonhost)) ||
1.34 raeburn 92: ($r->uri=~m{^/adm/(lti|launch)/}) ||
1.29 raeburn 93: ($vpnint && &Apache::lonnet::ip_match($remote_ip,$vpnint))) {
1.28 raeburn 94: $redirect = $alias;
1.34 raeburn 95: if (($r->uri=~m{^/raw/}) || ($r->uri=~m{^/adm/dns/})) {
1.27 raeburn 96: my %iphost = &Apache::lonnet::get_iphost();
97: if (exists($iphost{$remote_ip})) {
1.28 raeburn 98: undef($redirect);
1.27 raeburn 99: }
1.38 raeburn 100: } elsif ($r->uri eq $ssourl) {
101: unless (&Apache::lonnet::alias_sso($lonhost)) {
1.36 raeburn 102: undef($redirect);
103: }
1.27 raeburn 104: }
105: }
106: }
1.28 raeburn 107: if ($redirect) {
108: my $uri = $r->uri;
1.36 raeburn 109: if (($uri eq '/adm/switchserver') || ($uri =~ m{^/Shibboleth.sso/})) {
1.32 raeburn 110: return DECLINED;
111: }
1.38 raeburn 112: unless (($uri eq '/adm/migrateuser') || ($uri eq $ssourl)) {
1.30 raeburn 113: my %user;
114: my $handle = &Apache::lonnet::check_for_valid_session($r,undef,\%user);
115: if (($handle) && ($user{'name'} ne '') && ($user{'domain'} ne '')) {
1.35 raeburn 116: unless (($user{'name'} eq 'public') && ($user{'domain'} eq 'public')) {
1.37 raeburn 117: my $dest = '/adm/migrateuser';
118: my $token = &set_token($r,$dest,$remote_ip,\%user);
1.35 raeburn 119: unless ($token eq '') {
1.37 raeburn 120: $r->internal_redirect("$dest?token=$token");
1.35 raeburn 121: $r->set_handlers('PerlHandler'=> undef);
122: return DECLINED;
123: }
1.30 raeburn 124: }
125: }
126: }
1.28 raeburn 127: my $protocol = 'http';
128: my $port = $r->get_server_port();
129: if ($port eq '443') {
130: $protocol = 'https';
131: }
1.33 raeburn 132: if ($uri =~ m{^(/adm/css/)(.+)(.css)$}) {
133: $uri = $1.&escape($2).$3;
134: }
1.30 raeburn 135: my $location = $protocol.'://'.$redirect.$uri;
1.37 raeburn 136: if ($r->uri =~ m{^/tiny/$match_domain/\w+$}) {
137: my $token = &set_token($r,$r->uri);
138: unless ($token eq '') {
139: $location .= '?ttoken='.$token;
140: }
141: } elsif ($r->args) {
142: $location .= '?'.$r->args;
1.30 raeburn 143: }
144: $r->header_out(Location => $location);
1.28 raeburn 145: return REDIRECT;
146: }
1.27 raeburn 147: }
148: }
1.37 raeburn 149: if ($r->uri =~ m{^/tiny/$match_domain/\w+$}) {
150: my $token = &set_token($r,$r->uri);
151: unless ($token eq '') {
152: $r->args('ttoken='.$token);
153: }
154: }
1.7 raeburn 155: if ($r->uri=~m|^(/raw)?/uploaded/|) {
156: my $fn = $r->uri();
157: $fn=~s/^\/raw//;
158: my (undef,undef,$udom,$uname,@ufile)=split(/\//,$fn);
1.10 albertel 159: if (@ufile) { $ufile[-1]=~s/^[\~\.]+//; }
1.7 raeburn 160: my $chome=&Apache::lonnet::homeserver($uname,$udom);
1.9 albertel 161: my $allowed=0;
162: my @ids=&Apache::lonnet::current_machine_ids();
163: foreach my $id (@ids) { if ($id eq $chome) { $allowed=1; } }
164: if ($allowed) {
1.13 albertel 165: $r->filename(&propath($udom,$uname).
166: '/userfiles/'.(join('/',@ufile)));
1.7 raeburn 167: }
1.15 raeburn 168: return OK;
1.26 raeburn 169: } elsif ($r->uri =~ m{^\Q/adm/wrapper/ext/https:/\E[^/]}) {
170: my $uri = $r->uri;
171: $uri =~ s{^(\Q/adm/wrapper/ext/https:/\E)}{$1/};
172: $r->uri($uri);
1.15 raeburn 173: }
1.26 raeburn 174: return DECLINED;
1.15 raeburn 175: }
176:
177: sub redirect_raw {
178: my ($remote_ip,$lonhost) = @_;
179: my @remhostids = &Apache::lonnet::get_hosts_from_ip($remote_ip);
180: my $redirect;
181: while (@remhostids) {
182: my $try_server = pop(@remhostids);
183: my $remhostname = &Apache::lonnet::hostname($try_server);
184: if ($remhostname) {
185: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
186: my ($remmajor,$remminor) = ($remoterev =~ /^(\d+)\.(\d+)/);
187: if (($remmajor > 2) || (($remmajor == 2) && $remminor >= 12)) {
188: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
189: if (ref($internet_names) eq 'ARRAY') {
190: my $intdom = &Apache::lonnet::internet_dom($lonhost);
191: unless (grep(/^\Q$intdom\E$/,@{$internet_names})) {
192: my $lonhostname = &Apache::lonnet::hostname($lonhost);
193: my $serverhomeID = &Apache::lonnet::get_server_homeID($lonhostname);
194: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
195: my %domdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
196: my $replication = $domdefaults{'replication'};
197: if (ref($replication) eq 'HASH') {
198: my $remhomeID = &Apache::lonnet::get_server_homeID($remhostname);
199: my $remhomedom = &Apache::lonnet::host_domain($remhomeID);
200: my $remprimary = &Apache::lonnet::domain($remhomedom,'primary');
201: my $remintdom = &Apache::lonnet::internet_dom($remprimary);
202: if (ref($replication->{'certreq'}) eq 'ARRAY') {
203: if (grep(/^\Q$remintdom\E$/,@{$replication->{'certreq'}})) {
1.24 raeburn 204: $redirect = 0;
205: } else {
1.15 raeburn 206: $redirect = 1;
207: }
208: }
209: if (ref($replication->{'nocertreq'}) eq 'ARRAY') {
210: if (grep(/^\Q$remintdom\E$/,@{$replication->{'nocertreq'}})) {
1.24 raeburn 211: $redirect = 1;
212: } else {
1.15 raeburn 213: $redirect = 0;
214: }
215: }
216: }
217: }
218: }
219: }
220: last;
221: }
222: }
1.24 raeburn 223: return $redirect;
1.1 www 224: }
225:
1.37 raeburn 226: sub set_token {
227: my ($r,$dest,$remote_ip,$userref) = @_;
228: my (%info,%user);
229: if ($dest eq '/adm/migrateuser') {
230: return unless (ref($userref) eq 'HASH');
231: %user = %{$userref};
232: %info = ('ip' => $remote_ip,
233: 'domain' => $user{'domain'},
234: 'username' => $user{'name'},
235: 'server' => $r->dir_config('lonHostID'),
236: );
237: }
238: if ($r->args) {
239: foreach my $pair (split(/&/,$r->args)) {
1.30 raeburn 240: my ($name,$value) = split(/=/,$pair);
241: $name = &LONCAPA::unescape($name);
1.37 raeburn 242: next unless (($name eq 'role') || ($name eq 'symb') ||
243: ($name eq 'ltoken') || ($name eq 'linkkey') ||
244: ($name eq 'ttoken'));
1.30 raeburn 245: $value =~ tr/+/ /;
246: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
247: $info{$name} = $value;
248: }
1.37 raeburn 249: if ($info{'ttoken'}) {
250: my %current = &Apache::lonnet::tmpget($info{'ttoken'});
251: delete($info{'ttoken'});
252: if ($current{'origurl'} eq $r->uri) {
253: return if (keys(%current));
254: }
255: }
1.30 raeburn 256: }
1.37 raeburn 257: #
258: # To be able to support deep-linking for a shortened URL, i.e.,
259: # /tiny/$dom/$id with (a) linkkey included in POSTed data and
260: # data and (b) non-Shibboleth SSO in use, ltoken (or linkprot
261: # if sending to /adm/migrateuser), or linkkey are written to a
262: # .tmp file in /home/httpd/perl/tmp and the query string is
263: # replaced with ttoken=tokenid. This does mean other POSTed
264: # data will be discarded.
265: #
266: if ($r->uri =~ m{^/tiny/$match_domain/\w+$}) {
267: unless (($info{'ltoken'}) || ($info{'linkkey'} ne '')) {
268: &Apache::lonacc::get_posted_cgi($r,['linkkey']);
269: if ($env{'form.linkkey'} ne '') {
270: $info{'linkkey'} = $env{'form.linkkey'};
271: }
1.30 raeburn 272: }
273: }
1.37 raeburn 274: if ($dest eq '/adm/migrateuser') {
275: if ($info{'ltoken'}) {
276: my %link_info = &Apache::lonnet::tmpget($info{'ltoken'});
277: if ($link_info{'linkprot'}) {
278: $info{'linkprot'} = $link_info{'linkprot'};
1.40 ! raeburn 279: foreach my $item ('linkprotuser','linkprotexit') {
! 280: if ($link_info{$item} ne '') {
! 281: $info{$item} = $link_info{$item};
! 282: }
1.39 raeburn 283: }
1.37 raeburn 284: }
1.39 raeburn 285: &Apache::lonnet::tmpdel($info{'ltoken'});
1.37 raeburn 286: delete($info{'ltoken'});
287: }
288: unless ($info{'role'}) {
289: if ($user{'role'} ne '') {
290: $info{'role'} = $user{'role'};
291: }
292: }
293: unless ($info{'symb'}) {
294: unless ($r->uri eq '/adm/roles') {
295: $info{'origurl'} = $r->uri;
296: }
1.30 raeburn 297: }
298: }
1.37 raeburn 299: if (($dest eq '/adm/migrateuser') || (keys(%info) > 0)) {
300: unless ($dest eq '/adm/migrateuser') {
301: $info{'origurl'} = $r->uri;
302: }
303: my $token = &Apache::lonnet::tmpput(\%info,$r->dir_config('lonHostID'),'link');
304: unless (($token eq 'con_lost') || ($token eq 'refused') ||
305: ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
306: return $token;
307: }
1.30 raeburn 308: }
309: return;
310: }
311:
1.1 www 312: 1;
313: __END__
314:
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