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[LON-CAPA] /
loncom /
lontrans.pm
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1.38:
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Mon Dec 6 03:31:54 2021 UTC (2 years, 8 months ago) by
raeburn
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- Dual SSO and non-SSO login from /adm/login for use with additional SSO
mechanisms besides Shibboleth.
- Default is to use /adm/sso for "authentication" URL.
- Different authentication URL can be set with lonOtherAuthenUrl perlvar.
- Update documentation for lonshibauth.pm and lonshibacc.pm
- Wording change for WAF/Proxy domain configuration
- If Apache config contains lonSSOEmailOK set to 1, default removal
of @ "internet domain" from username for SSO authenticated users in
lonshibacc.pm is skipped.
- &alias_shibboleth() routine in lonnet.pm renamed alias_sso().
1: # The LearningOnline Network
2: # URL translation for User Files
3: #
4: # $Id: lontrans.pm,v 1.38 2021/12/06 03:31:54 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);
33: use Apache::lonnet;
34: use Apache::loncommon;
35: use Apache::File();
36: use LONCAPA qw(:DEFAULT :match);
37:
38: sub handler {
39: my $r = shift;
40: # FIXME line remove when mod_perl fixes BUG#4948
41: $r->notes->set('error-notes' => '');
42: my $hdrhost = $r->headers_in->get('Host');
43: if ($r->uri=~m{^/raw/}) {
44: if ($hdrhost) {
45: unless ($hdrhost =~ /^internal\-/) {
46: my $remote_ip = &Apache::lonnet::get_requestor_ip($r,REMOTE_NOLOOKUP,1);
47: my $lonhost = $r->dir_config('lonHostID');
48: if (&redirect_raw($remote_ip,$lonhost)) {
49: my $location = 'https://internal-'.$hdrhost.$r->uri;
50: $r->headers_out->set(Location => $location);
51: return REDIRECT;
52: }
53: }
54: }
55: }
56: my $alias = &Apache::lonnet::get_proxy_alias();
57: if ($alias) {
58: my $lonhost = $r->dir_config('lonHostID');
59: my $hostname = &Apache::lonnet::hostname($lonhost);
60: my $ssourl = '/adm/sso';
61: if ($r->dir_config('lonOtherAuthenUrl') ne '') {
62: $ssourl = $r->dir_config('lonOtherAuthenUrl');
63: }
64: if (($hdrhost eq $alias) || ($hdrhost eq $hostname)) {
65: my $proxyinfo = &Apache::lonnet::get_proxy_settings($r->dir_config('lonDefDomain'));
66: my ($vpnint,$vpnext);
67: if (ref($proxyinfo) eq 'HASH') {
68: $vpnint = $proxyinfo->{'vpnint'};
69: $vpnext = $proxyinfo->{'vpnext'};
70: }
71: my ($redirect,$remote_ip);
72: if ($hdrhost eq $alias) {
73: $remote_ip = &Apache::lonnet::get_requestor_ip($r,REMOTE_NOLOOKUP);
74: if (($vpnext && &Apache::lonnet::ip_match($remote_ip,$vpnext)) &&
75: ($r->uri !~ m{^/adm/(lti|launch)/})) {
76: $redirect = $hostname;
77: }
78: if ($r->uri eq $ssourl) {
79: if (&Apache::lonnet::alias_sso($lonhost)) {
80: undef($redirect);
81: } else {
82: $redirect = $hostname;
83: }
84: }
85: if ($redirect eq $hdrhost) {
86: undef($redirect);
87: }
88: } elsif ($hdrhost eq $hostname) {
89: $remote_ip = &Apache::lonnet::get_requestor_ip($r,REMOTE_NOLOOKUP,1);
90: unless (($remote_ip eq '127.0.0.1') || ($remote_ip eq '::1') ||
91: ($remote_ip eq &Apache::lonnet::get_host_ip($lonhost)) ||
92: ($r->uri=~m{^/adm/(lti|launch)/}) ||
93: ($vpnint && &Apache::lonnet::ip_match($remote_ip,$vpnint))) {
94: $redirect = $alias;
95: if (($r->uri=~m{^/raw/}) || ($r->uri=~m{^/adm/dns/})) {
96: my %iphost = &Apache::lonnet::get_iphost();
97: if (exists($iphost{$remote_ip})) {
98: undef($redirect);
99: }
100: } elsif ($r->uri eq $ssourl) {
101: unless (&Apache::lonnet::alias_sso($lonhost)) {
102: undef($redirect);
103: }
104: }
105: }
106: }
107: if ($redirect) {
108: my $uri = $r->uri;
109: if (($uri eq '/adm/switchserver') || ($uri =~ m{^/Shibboleth.sso/})) {
110: return DECLINED;
111: }
112: unless (($uri eq '/adm/migrateuser') || ($uri eq $ssourl)) {
113: my %user;
114: my $handle = &Apache::lonnet::check_for_valid_session($r,undef,\%user);
115: if (($handle) && ($user{'name'} ne '') && ($user{'domain'} ne '')) {
116: unless (($user{'name'} eq 'public') && ($user{'domain'} eq 'public')) {
117: my $dest = '/adm/migrateuser';
118: my $token = &set_token($r,$dest,$remote_ip,\%user);
119: unless ($token eq '') {
120: $r->internal_redirect("$dest?token=$token");
121: $r->set_handlers('PerlHandler'=> undef);
122: return DECLINED;
123: }
124: }
125: }
126: }
127: my $protocol = 'http';
128: my $port = $r->get_server_port();
129: if ($port eq '443') {
130: $protocol = 'https';
131: }
132: if ($uri =~ m{^(/adm/css/)(.+)(.css)$}) {
133: $uri = $1.&escape($2).$3;
134: }
135: my $location = $protocol.'://'.$redirect.$uri;
136: if ($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;
143: }
144: $r->header_out(Location => $location);
145: return REDIRECT;
146: }
147: }
148: }
149: if ($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: }
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);
159: if (@ufile) { $ufile[-1]=~s/^[\~\.]+//; }
160: my $chome=&Apache::lonnet::homeserver($uname,$udom);
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) {
165: $r->filename(&propath($udom,$uname).
166: '/userfiles/'.(join('/',@ufile)));
167: }
168: return OK;
169: } elsif ($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);
173: }
174: return DECLINED;
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'}})) {
204: $redirect = 0;
205: } else {
206: $redirect = 1;
207: }
208: }
209: if (ref($replication->{'nocertreq'}) eq 'ARRAY') {
210: if (grep(/^\Q$remintdom\E$/,@{$replication->{'nocertreq'}})) {
211: $redirect = 1;
212: } else {
213: $redirect = 0;
214: }
215: }
216: }
217: }
218: }
219: }
220: last;
221: }
222: }
223: return $redirect;
224: }
225:
226: sub set_token {
227: my ($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)) {
240: my ($name,$value) = split(/=/,$pair);
241: $name = &LONCAPA::unescape($name);
242: next unless (($name eq 'role') || ($name eq 'symb') ||
243: ($name eq 'ltoken') || ($name eq 'linkkey') ||
244: ($name eq 'ttoken'));
245: $value =~ tr/+/ /;
246: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
247: $info{$name} = $value;
248: }
249: if ($info{'ttoken'}) {
250: my %current = &Apache::lonnet::tmpget($info{'ttoken'});
251: delete($info{'ttoken'});
252: if ($current{'origurl'} eq $r->uri) {
253: return if (keys(%current));
254: }
255: }
256: }
257: #
258: # To be able to support deep-linking for a shortened URL, i.e.,
259: # /tiny/$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'} = $env{'form.linkkey'};
271: }
272: }
273: }
274: if ($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'} = $link_info{'linkprot'};
279: }
280: &Apache::lonnet::tmpdel($info{'ltoken'});;
281: delete($info{'ltoken'});
282: }
283: unless ($info{'role'}) {
284: if ($user{'role'} ne '') {
285: $info{'role'} = $user{'role'};
286: }
287: }
288: unless ($info{'symb'}) {
289: unless ($r->uri eq '/adm/roles') {
290: $info{'origurl'} = $r->uri;
291: }
292: }
293: }
294: if (($dest eq '/adm/migrateuser') || (keys(%info) > 0)) {
295: unless ($dest eq '/adm/migrateuser') {
296: $info{'origurl'} = $r->uri;
297: }
298: my $token = &Apache::lonnet::tmpput(\%info,$r->dir_config('lonHostID'),'link');
299: unless (($token eq 'con_lost') || ($token eq 'refused') ||
300: ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
301: return $token;
302: }
303: }
304: return;
305: }
306:
307: 1;
308: __END__
309:
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