# The LearningOnline Network # URL translation for User Files # # $Id: lontrans.pm,v 1.32 2021/07/17 20:34:15 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # # This file is part of the LearningOnline Network with CAPA (LON-CAPA). # # LON-CAPA is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # LON-CAPA is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with LON-CAPA; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA # # /home/httpd/html/adm/gpl.txt # # http://www.lon-capa.org/ # package Apache::lontrans; use strict; use Apache::Constants qw(:common :remotehost); use Apache::lonnet; use Apache::loncommon; use Apache::File(); use LONCAPA qw(:DEFAULT :match); sub handler { my $r = shift; # FIXME line remove when mod_perl fixes BUG#4948 $r->notes->set('error-notes' => ''); my $hdrhost = $r->headers_in->get('Host'); if ($r->uri=~m{^/raw/}) { if ($hdrhost) { unless ($hdrhost =~ /^internal\-/) { my $remote_ip = &Apache::lonnet::get_requestor_ip($r,REMOTE_NOLOOKUP,1); my $lonhost = $r->dir_config('lonHostID'); if (&redirect_raw($remote_ip,$lonhost)) { my $location = 'https://internal-'.$hdrhost.$r->uri; $r->headers_out->set(Location => $location); return REDIRECT; } } } } my $alias = &Apache::lonnet::get_proxy_alias(); if ($alias) { my $lonhost = $r->dir_config('lonHostID'); my $hostname = &Apache::lonnet::hostname($lonhost); if (($hdrhost eq $alias) || ($hdrhost eq $hostname)) { my $proxyinfo = &Apache::lonnet::get_proxy_settings($r->dir_config('lonDefDomain')); my ($vpnint,$vpnext); if (ref($proxyinfo) eq 'HASH') { $vpnint = $proxyinfo->{'vpnint'}; $vpnext = $proxyinfo->{'vpnext'}; } my ($redirect,$remote_ip); if ($hdrhost eq $alias) { $remote_ip = &Apache::lonnet::get_requestor_ip($r,REMOTE_NOLOOKUP); if ($vpnext && &Apache::lonnet::ip_match($remote_ip,$vpnext)) { $redirect = $hostname; if ($redirect eq $hdrhost) { undef($redirect); } } } elsif ($hdrhost eq $hostname) { $remote_ip = &Apache::lonnet::get_requestor_ip($r,REMOTE_NOLOOKUP,1); unless (($remote_ip eq '127.0.0.1') || ($remote_ip eq '::1') || ($remote_ip eq &Apache::lonnet::get_host_ip($lonhost)) || ($vpnint && &Apache::lonnet::ip_match($remote_ip,$vpnint))) { $redirect = $alias; if (($r->uri=~m{^/raw/}) || ($r->uri=~m{^/adm/dns/(hosts|domain)$})) { my %iphost = &Apache::lonnet::get_iphost(); if (exists($iphost{$remote_ip})) { undef($redirect); } } } } if ($redirect) { my $uri = $r->uri; if (($uri eq '/adm/sso') || ($uri eq '/adm/switchserver') || ($uri =~ m{^/Shibboleth.sso/})) { return DECLINED; } unless ($uri eq '/adm/migrateuser') { my %user; my $handle = &Apache::lonnet::check_for_valid_session($r,undef,\%user); if (($handle) && ($user{'name'} ne '') && ($user{'domain'} ne '')) { my $token = &get_token($r,$remote_ip,\%user); unless ($token eq '') { $r->internal_redirect("/adm/migrateuser?token=$token"); $r->set_handlers('PerlHandler'=> undef); return DECLINED; } } } my $protocol = 'http'; my $port = $r->get_server_port(); if ($port eq '443') { $protocol = 'https'; } my $querystring = $r->args; my $location = $protocol.'://'.$redirect.$uri; if ($querystring) { $location .= "?$querystring"; } $r->header_out(Location => $location); return REDIRECT; } } } if ($r->uri=~m|^(/raw)?/uploaded/|) { my $fn = $r->uri(); $fn=~s/^\/raw//; my (undef,undef,$udom,$uname,@ufile)=split(/\//,$fn); if (@ufile) { $ufile[-1]=~s/^[\~\.]+//; } my $chome=&Apache::lonnet::homeserver($uname,$udom); my $allowed=0; my @ids=&Apache::lonnet::current_machine_ids(); foreach my $id (@ids) { if ($id eq $chome) { $allowed=1; } } if ($allowed) { $r->filename(&propath($udom,$uname). '/userfiles/'.(join('/',@ufile))); } return OK; } elsif ($r->uri =~ m{^\Q/adm/wrapper/ext/https:/\E[^/]}) { my $uri = $r->uri; $uri =~ s{^(\Q/adm/wrapper/ext/https:/\E)}{$1/}; $r->uri($uri); } return DECLINED; } sub redirect_raw { my ($remote_ip,$lonhost) = @_; my @remhostids = &Apache::lonnet::get_hosts_from_ip($remote_ip); my $redirect; while (@remhostids) { my $try_server = pop(@remhostids); my $remhostname = &Apache::lonnet::hostname($try_server); if ($remhostname) { my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server); my ($remmajor,$remminor) = ($remoterev =~ /^(\d+)\.(\d+)/); if (($remmajor > 2) || (($remmajor == 2) && $remminor >= 12)) { my $internet_names = &Apache::lonnet::get_internet_names($try_server); if (ref($internet_names) eq 'ARRAY') { my $intdom = &Apache::lonnet::internet_dom($lonhost); unless (grep(/^\Q$intdom\E$/,@{$internet_names})) { my $lonhostname = &Apache::lonnet::hostname($lonhost); my $serverhomeID = &Apache::lonnet::get_server_homeID($lonhostname); my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID); my %domdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom); my $replication = $domdefaults{'replication'}; if (ref($replication) eq 'HASH') { my $remhomeID = &Apache::lonnet::get_server_homeID($remhostname); my $remhomedom = &Apache::lonnet::host_domain($remhomeID); my $remprimary = &Apache::lonnet::domain($remhomedom,'primary'); my $remintdom = &Apache::lonnet::internet_dom($remprimary); if (ref($replication->{'certreq'}) eq 'ARRAY') { if (grep(/^\Q$remintdom\E$/,@{$replication->{'certreq'}})) { $redirect = 0; } else { $redirect = 1; } } if (ref($replication->{'nocertreq'}) eq 'ARRAY') { if (grep(/^\Q$remintdom\E$/,@{$replication->{'nocertreq'}})) { $redirect = 1; } else { $redirect = 0; } } } } } } last; } } return $redirect; } sub get_token { my ($r,$remote_ip,$userref) = @_; return unless (ref($userref) eq 'HASH'); my %user = %{$userref}; my %info = ('ip' => $remote_ip, 'domain' => $user{'domain'}, 'username' => $user{'name'}, 'server' => $r->dir_config('lonHostID'), ); my $query = $r->args; if ($query) { foreach my $pair (split(/&/,$query)) { my ($name,$value) = split(/=/,$pair); $name = &LONCAPA::unescape($name); next unless (($name eq 'role') || ($name eq 'symb')); $value =~ tr/+/ /; $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; $info{$name} = $value; } } unless ($info{'role'}) { if ($user{'role'} ne '') { $info{'role'} = $user{'role'}; } } unless ($info{'symb'}) { unless ($r->uri eq '/adm/roles') { $info{'origurl'} = $r->uri; } } my $token = &Apache::lonnet::tmpput(\%info,$r->dir_config('lonHostID')); unless (($token eq 'con_lost') || ($token eq 'refused') || ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) { return $token; } return; } 1; __END__