Annotation of loncom/lontrans.pm, revision 1.37
1.1 www 1: # The LearningOnline Network
2: # URL translation for User Files
3: #
1.37 ! raeburn 4: # $Id: lontrans.pm,v 1.36 2021/10/08 14:36:51 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);
60: if (($hdrhost eq $alias) || ($hdrhost eq $hostname)) {
61: my $proxyinfo = &Apache::lonnet::get_proxy_settings($r->dir_config('lonDefDomain'));
1.29 raeburn 62: my ($vpnint,$vpnext);
1.28 raeburn 63: if (ref($proxyinfo) eq 'HASH') {
1.29 raeburn 64: $vpnint = $proxyinfo->{'vpnint'};
65: $vpnext = $proxyinfo->{'vpnext'};
1.28 raeburn 66: }
1.30 raeburn 67: my ($redirect,$remote_ip);
1.28 raeburn 68: if ($hdrhost eq $alias) {
1.30 raeburn 69: $remote_ip = &Apache::lonnet::get_requestor_ip($r,REMOTE_NOLOOKUP);
1.34 raeburn 70: if (($vpnext && &Apache::lonnet::ip_match($remote_ip,$vpnext)) &&
71: ($r->uri !~ m{^/adm/(lti|launch)/})) {
1.28 raeburn 72: $redirect = $hostname;
1.36 raeburn 73: }
74: if ($r->uri eq '/adm/sso') {
75: if (&Apache::lonnet::alias_shibboleth($lonhost)) {
1.28 raeburn 76: undef($redirect);
1.36 raeburn 77: } else {
78: $redirect = $hostname;
1.28 raeburn 79: }
80: }
1.36 raeburn 81: if ($redirect eq $hdrhost) {
82: undef($redirect);
83: }
1.28 raeburn 84: } elsif ($hdrhost eq $hostname) {
1.30 raeburn 85: $remote_ip = &Apache::lonnet::get_requestor_ip($r,REMOTE_NOLOOKUP,1);
1.29 raeburn 86: unless (($remote_ip eq '127.0.0.1') || ($remote_ip eq '::1') ||
1.28 raeburn 87: ($remote_ip eq &Apache::lonnet::get_host_ip($lonhost)) ||
1.34 raeburn 88: ($r->uri=~m{^/adm/(lti|launch)/}) ||
1.29 raeburn 89: ($vpnint && &Apache::lonnet::ip_match($remote_ip,$vpnint))) {
1.28 raeburn 90: $redirect = $alias;
1.34 raeburn 91: if (($r->uri=~m{^/raw/}) || ($r->uri=~m{^/adm/dns/})) {
1.27 raeburn 92: my %iphost = &Apache::lonnet::get_iphost();
93: if (exists($iphost{$remote_ip})) {
1.28 raeburn 94: undef($redirect);
1.27 raeburn 95: }
1.36 raeburn 96: } elsif ($r->uri eq '/adm/sso') {
97: unless (&Apache::lonnet::alias_shibboleth($lonhost)) {
98: undef($redirect);
99: }
1.27 raeburn 100: }
101: }
102: }
1.28 raeburn 103: if ($redirect) {
104: my $uri = $r->uri;
1.36 raeburn 105: if (($uri eq '/adm/switchserver') || ($uri =~ m{^/Shibboleth.sso/})) {
1.32 raeburn 106: return DECLINED;
107: }
1.37 ! raeburn 108: unless (($uri eq '/adm/migrateuser') || ($uri eq '/adm/sso')) {
1.30 raeburn 109: my %user;
110: my $handle = &Apache::lonnet::check_for_valid_session($r,undef,\%user);
111: if (($handle) && ($user{'name'} ne '') && ($user{'domain'} ne '')) {
1.35 raeburn 112: unless (($user{'name'} eq 'public') && ($user{'domain'} eq 'public')) {
1.37 ! raeburn 113: my $dest = '/adm/migrateuser';
! 114: my $token = &set_token($r,$dest,$remote_ip,\%user);
1.35 raeburn 115: unless ($token eq '') {
1.37 ! raeburn 116: $r->internal_redirect("$dest?token=$token");
1.35 raeburn 117: $r->set_handlers('PerlHandler'=> undef);
118: return DECLINED;
119: }
1.30 raeburn 120: }
121: }
122: }
1.28 raeburn 123: my $protocol = 'http';
124: my $port = $r->get_server_port();
125: if ($port eq '443') {
126: $protocol = 'https';
127: }
1.33 raeburn 128: if ($uri =~ m{^(/adm/css/)(.+)(.css)$}) {
129: $uri = $1.&escape($2).$3;
130: }
1.30 raeburn 131: my $location = $protocol.'://'.$redirect.$uri;
1.37 ! raeburn 132: if ($r->uri =~ m{^/tiny/$match_domain/\w+$}) {
! 133: my $token = &set_token($r,$r->uri);
! 134: unless ($token eq '') {
! 135: $location .= '?ttoken='.$token;
! 136: }
! 137: } elsif ($r->args) {
! 138: $location .= '?'.$r->args;
1.30 raeburn 139: }
140: $r->header_out(Location => $location);
1.28 raeburn 141: return REDIRECT;
142: }
1.27 raeburn 143: }
144: }
1.37 ! raeburn 145: if ($r->uri =~ m{^/tiny/$match_domain/\w+$}) {
! 146: my $token = &set_token($r,$r->uri);
! 147: unless ($token eq '') {
! 148: $r->args('ttoken='.$token);
! 149: }
! 150: }
1.7 raeburn 151: if ($r->uri=~m|^(/raw)?/uploaded/|) {
152: my $fn = $r->uri();
153: $fn=~s/^\/raw//;
154: my (undef,undef,$udom,$uname,@ufile)=split(/\//,$fn);
1.10 albertel 155: if (@ufile) { $ufile[-1]=~s/^[\~\.]+//; }
1.7 raeburn 156: my $chome=&Apache::lonnet::homeserver($uname,$udom);
1.9 albertel 157: my $allowed=0;
158: my @ids=&Apache::lonnet::current_machine_ids();
159: foreach my $id (@ids) { if ($id eq $chome) { $allowed=1; } }
160: if ($allowed) {
1.13 albertel 161: $r->filename(&propath($udom,$uname).
162: '/userfiles/'.(join('/',@ufile)));
1.7 raeburn 163: }
1.15 raeburn 164: return OK;
1.26 raeburn 165: } elsif ($r->uri =~ m{^\Q/adm/wrapper/ext/https:/\E[^/]}) {
166: my $uri = $r->uri;
167: $uri =~ s{^(\Q/adm/wrapper/ext/https:/\E)}{$1/};
168: $r->uri($uri);
1.15 raeburn 169: }
1.26 raeburn 170: return DECLINED;
1.15 raeburn 171: }
172:
173: sub redirect_raw {
174: my ($remote_ip,$lonhost) = @_;
175: my @remhostids = &Apache::lonnet::get_hosts_from_ip($remote_ip);
176: my $redirect;
177: while (@remhostids) {
178: my $try_server = pop(@remhostids);
179: my $remhostname = &Apache::lonnet::hostname($try_server);
180: if ($remhostname) {
181: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
182: my ($remmajor,$remminor) = ($remoterev =~ /^(\d+)\.(\d+)/);
183: if (($remmajor > 2) || (($remmajor == 2) && $remminor >= 12)) {
184: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
185: if (ref($internet_names) eq 'ARRAY') {
186: my $intdom = &Apache::lonnet::internet_dom($lonhost);
187: unless (grep(/^\Q$intdom\E$/,@{$internet_names})) {
188: my $lonhostname = &Apache::lonnet::hostname($lonhost);
189: my $serverhomeID = &Apache::lonnet::get_server_homeID($lonhostname);
190: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
191: my %domdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
192: my $replication = $domdefaults{'replication'};
193: if (ref($replication) eq 'HASH') {
194: my $remhomeID = &Apache::lonnet::get_server_homeID($remhostname);
195: my $remhomedom = &Apache::lonnet::host_domain($remhomeID);
196: my $remprimary = &Apache::lonnet::domain($remhomedom,'primary');
197: my $remintdom = &Apache::lonnet::internet_dom($remprimary);
198: if (ref($replication->{'certreq'}) eq 'ARRAY') {
199: if (grep(/^\Q$remintdom\E$/,@{$replication->{'certreq'}})) {
1.24 raeburn 200: $redirect = 0;
201: } else {
1.15 raeburn 202: $redirect = 1;
203: }
204: }
205: if (ref($replication->{'nocertreq'}) eq 'ARRAY') {
206: if (grep(/^\Q$remintdom\E$/,@{$replication->{'nocertreq'}})) {
1.24 raeburn 207: $redirect = 1;
208: } else {
1.15 raeburn 209: $redirect = 0;
210: }
211: }
212: }
213: }
214: }
215: }
216: last;
217: }
218: }
1.24 raeburn 219: return $redirect;
1.1 www 220: }
221:
1.37 ! raeburn 222: sub set_token {
! 223: my ($r,$dest,$remote_ip,$userref) = @_;
! 224: my (%info,%user);
! 225: if ($dest eq '/adm/migrateuser') {
! 226: return unless (ref($userref) eq 'HASH');
! 227: %user = %{$userref};
! 228: %info = ('ip' => $remote_ip,
! 229: 'domain' => $user{'domain'},
! 230: 'username' => $user{'name'},
! 231: 'server' => $r->dir_config('lonHostID'),
! 232: );
! 233: }
! 234: if ($r->args) {
! 235: foreach my $pair (split(/&/,$r->args)) {
1.30 raeburn 236: my ($name,$value) = split(/=/,$pair);
237: $name = &LONCAPA::unescape($name);
1.37 ! raeburn 238: next unless (($name eq 'role') || ($name eq 'symb') ||
! 239: ($name eq 'ltoken') || ($name eq 'linkkey') ||
! 240: ($name eq 'ttoken'));
1.30 raeburn 241: $value =~ tr/+/ /;
242: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
243: $info{$name} = $value;
244: }
1.37 ! raeburn 245: if ($info{'ttoken'}) {
! 246: my %current = &Apache::lonnet::tmpget($info{'ttoken'});
! 247: delete($info{'ttoken'});
! 248: if ($current{'origurl'} eq $r->uri) {
! 249: return if (keys(%current));
! 250: }
! 251: }
1.30 raeburn 252: }
1.37 ! raeburn 253: #
! 254: # To be able to support deep-linking for a shortened URL, i.e.,
! 255: # /tiny/$dom/$id with (a) linkkey included in POSTed data and
! 256: # data and (b) non-Shibboleth SSO in use, ltoken (or linkprot
! 257: # if sending to /adm/migrateuser), or linkkey are written to a
! 258: # .tmp file in /home/httpd/perl/tmp and the query string is
! 259: # replaced with ttoken=tokenid. This does mean other POSTed
! 260: # data will be discarded.
! 261: #
! 262: if ($r->uri =~ m{^/tiny/$match_domain/\w+$}) {
! 263: unless (($info{'ltoken'}) || ($info{'linkkey'} ne '')) {
! 264: &Apache::lonacc::get_posted_cgi($r,['linkkey']);
! 265: if ($env{'form.linkkey'} ne '') {
! 266: $info{'linkkey'} = $env{'form.linkkey'};
! 267: }
1.30 raeburn 268: }
269: }
1.37 ! raeburn 270: if ($dest eq '/adm/migrateuser') {
! 271: if ($info{'ltoken'}) {
! 272: my %link_info = &Apache::lonnet::tmpget($info{'ltoken'});
! 273: if ($link_info{'linkprot'}) {
! 274: $info{'linkprot'} = $link_info{'linkprot'};
! 275: }
! 276: &Apache::lonnet::tmpdel($info{'ltoken'});;
! 277: delete($info{'ltoken'});
! 278: }
! 279: unless ($info{'role'}) {
! 280: if ($user{'role'} ne '') {
! 281: $info{'role'} = $user{'role'};
! 282: }
! 283: }
! 284: unless ($info{'symb'}) {
! 285: unless ($r->uri eq '/adm/roles') {
! 286: $info{'origurl'} = $r->uri;
! 287: }
1.30 raeburn 288: }
289: }
1.37 ! raeburn 290: if (($dest eq '/adm/migrateuser') || (keys(%info) > 0)) {
! 291: unless ($dest eq '/adm/migrateuser') {
! 292: $info{'origurl'} = $r->uri;
! 293: }
! 294: my $token = &Apache::lonnet::tmpput(\%info,$r->dir_config('lonHostID'),'link');
! 295: unless (($token eq 'con_lost') || ($token eq 'refused') ||
! 296: ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
! 297: return $token;
! 298: }
1.30 raeburn 299: }
300: return;
301: }
302:
1.1 www 303: 1;
304: __END__
305:
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