--- loncom/auth/switchserver.pm 2016/12/16 15:31:11 1.35 +++ loncom/auth/switchserver.pm 2024/10/09 15:33:08 1.35.2.9 @@ -1,7 +1,7 @@ # The LearningOnline Network # Switch Servers Handler # -# $Id: switchserver.pm,v 1.35 2016/12/16 15:31:11 raeburn Exp $ +# $Id: switchserver.pm,v 1.35.2.9 2024/10/09 15:33:08 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -29,9 +29,11 @@ package Apache::switchserver; use strict; -use Apache::Constants qw(:common); +use Apache::Constants qw(:common :remotehost); use Apache::lonnet; +use Apache::loncommon; use Apache::lonmenu; +use Digest::MD5 qw(md5_hex); use CGI::Cookie(); use Apache::lonlocal; use LONCAPA qw(:DEFAULT :match); @@ -49,17 +51,24 @@ sub init_env { } my $lonidsdir=$r->dir_config('lonIDsDir'); &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); - + return $r->dir_config('lonIDsDir')."/$handle.id"; } sub do_redirect { my ($r,$url,$only_body,$extra_text) = @_; $r->send_http_header; + my $delay = 0.5; + if ($only_body && !$extra_text) { + $delay = 0; + } my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef, - {'redirect' => [0.5,$url], - 'only_body' => $only_body,}); + {'redirect' => [$delay,$url,'',1], + 'only_body' => $only_body, + 'switchserver' => 1, + 'links_disabled' => 1, + 'no_inline_link' => 1,}); my $end_page = &Apache::loncommon::end_page(); $r->print($start_page.$extra_text.$end_page); unless ($env{'user.name'} eq 'public' && ($env{'user.domain'} eq 'public')) { @@ -68,6 +77,24 @@ sub do_redirect { return OK; } +sub balancer_cookieid { + my ($r,$desthost,$uname,$udom) = @_; + my @hosts = &Apache::lonnet::current_machine_ids(); + my $newcookieid; + unless (grep(/^\Q$desthost\E$/,@hosts)) { + my $balancedir=$r->dir_config('lonBalanceDir'); + $newcookieid = &md5_hex(&md5_hex(time.{}.rand().$$)); + my $cookie = $udom.'_'.$uname.'_'.$newcookieid; + my $balcookie = "balanceID=$cookie; path=/; HttpOnly;"; + if (open(my $fh,'>',"$balancedir/$cookie.id")) { + print $fh $desthost; + close($fh); + $r->headers_out->add('Set-cookie' => $balcookie); + } + } + return $newcookieid; +} + sub flush_course_logs { &Apache::lonnet::flushcourselogs(); return OK; @@ -80,7 +107,7 @@ sub handler { if (!defined($handle)) { return FORBIDDEN; } &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, - ['otherserver','role','origurl','symb']); + ['otherserver','role','origurl','symb','edit']); my $switch_to=&Apache::lonnet::hostname($env{'form.otherserver'}); if (! $env{'form.otherserver'}) { @@ -89,7 +116,7 @@ sub handler { $env{'user.name'}); if (! $env{'form.otherserver'}) { $env{'form.otherserver'} = - &Apache::lonnet::spareserver(30000,undef,1); + &Apache::lonnet::spareserver($r,30000,undef,1); } $switch_to=&Apache::lonnet::hostname($env{'form.otherserver'}); } @@ -101,20 +128,30 @@ sub handler { if ($Apache::lonnet::protocol{$env{'form.otherserver'}} eq 'https') { $protocol = $Apache::lonnet::protocol{$env{'form.otherserver'}}; } - } + unless ($env{'form.otherserver'} eq $r->dir_config('lonHostID')) { + my $alias = &Apache::lonnet::use_proxy_alias($r,$env{'form.otherserver'}); + $switch_to = $alias if ($alias ne ''); + } + } if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') { my $url = $protocol.'://'.$switch_to.$r->uri; + unlink($handle); + #expire the cookie + my $c = new CGI::Cookie(-name => 'lonPubID', + -value => '', + -expires => '-10y',); + $r->header_out('Set-cookie' => $c); return &do_redirect($r,$url,1) } my $skip_canhost_check = ''; + my $now = time; if ($env{'form.role'}) { if (!exists($env{'user.role.'.$env{'form.role'}})) { delete($env{'form.role'}); } else { - my $now = time; my ($start,$end) = split(/\./,$env{'user.role.'.$env{'form.role'}}); if (($start && $start > $now) || ($end && $end < $now)) { delete($env{'form.role'}); @@ -131,33 +168,80 @@ sub handler { } unless ($skip_canhost_check) { - my $canhost = 1; - my $uprimary_id = &Apache::lonnet::domain($env{'user.domain'},'primary'); - my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id); - my @intdoms; - my $internet_names = &Apache::lonnet::get_internet_names($env{'form.otherserver'}); - if (ref($internet_names) eq 'ARRAY') { - @intdoms = @{$internet_names}; - } - unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) { - my $serverhomeID = &Apache::lonnet::get_server_homeID($switch_to); - my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID); - my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom); - my %udomdefaults = &Apache::lonnet::get_domain_defaults($env{'user.domain'}); - my $remoterev = &Apache::lonnet::get_server_loncaparev($env{'user.domain'},$env{'form.otherserver'}); - $canhost = - &Apache::lonnet::can_host_session($env{'user.domain'}, - $env{'form.otherserver'}, - $remoterev, - $udomdefaults{'remotesessions'}, - $defdomdefaults{'hostedsessions'}); + my $canhost = &Apache::lonnet::can_switchserver($env{'user.domain'},$env{'form.otherserver'}); + unless ($canhost) { + if (($env{'request.course.id'}) && ($env{'form.symb'} ne '') && + (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) { + my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'}; + my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'}; + if (($cdom ne '') && ($cnum ne '') && ($env{'form.role'} =~ m{^([^.]+)\Q./$cdom/$cnum\E$})) { + my $symb = &Apache::lonnet::symbclean($env{'form.symb'}); + my ($map,$idx,$url) = &Apache::lonnet::decode_symb($symb); + if (&Apache::lonnet::symbverify($symb,$url)) { + my $fileloc = &Apache::lonnet::declutter(&Apache::lonnet::filelocation("",$url)); + my $resurl = &Apache::lonnet::clutter($url); + if ($resurl =~ m{^/res/($match_domain)/($match_username)/}) { + my ($audom,$auname) = ($1,$2); + if (&Apache::lonnet::homeserver($auname,$audom) eq $env{'form.otherserver'}) { + my @possroles = ("user.role.au./$audom/","user.role.ca./$audom/$auname","user.role.aa./$audom/$auname"); + my $hasrole; + foreach my $rolekey (@possroles) { + if (exists($env{$rolekey})) { + my ($start,$end) = split(/\./,$env{$rolekey}); + unless (($start && $start > $now) || ($end && $end < $now)) { + $hasrole = $rolekey; + } + if ($hasrole) { + $hasrole =~ s/^\Quser.role.\E//; + last; + } + } + } + if ($hasrole) { + $env{'form.role'} = $hasrole; + $env{'form.origurl'} = &Apache::lonnet::deversion($resurl); + $env{'form.origurl'} =~ s{^/res/}{/priv/}; + delete($env{'form.symb'}); + $canhost = 1; + if ($env{'form.edit'}) { + my $ip = &Apache::lonnet::get_requestor_ip($r,REMOTE_NOLOOKUP); + my %info=('ip' => $ip, + 'domain' => $env{'user.domain'}, + 'username' => $env{'user.name'}, + 'home' => $env{'user.home'}, + 'role' => $env{'form.role'}, + 'server' => $r->dir_config('lonHostID'), + 'origurl' => $env{'form.origurl'}); + &Apache::loncommon::content_type($r,'text/html'); + my $token = &Apache::lonnet::tmpput(\%info,$env{'form.otherserver'}); + my $url = $protocol.'://'.$switch_to.'/adm/login?'. + 'domain='.$env{'user.domain'}. + '&username='.$env{'user.name'}. + '&token='.$token; + return &do_redirect($r,$url,0); + } + } + } + } + } + } + } } unless ($canhost) { return FORBIDDEN; } } #remove session env, and log event - unlink($handle); - my %temp=('switchserver' => time.':'.$env{'form.otherserver'}, + if (unlink($handle)) { + if ($env{'user.linkedenv'} ne '') { + my $lonidsdir=$r->dir_config('lonIDsDir'); + if (($env{'user.linkedenv'} =~ /^[a-f0-9]+_linked$/) && + (-l "$lonidsdir/$env{'user.linkedenv'}.id") && + (readlink("$lonidsdir/$env{'user.linkedenv'}.id") eq $handle)) { + unlink("$lonidsdir/$env{'user.linkedenv'}.id"); + } + } + } + my %temp=('switchserver' => $now.':'.$env{'form.otherserver'}, $env{'form.role'}); &Apache::lonnet::put('email_status',\%temp); my $logmsg = "Switch Server to $env{'form.otherserver'}"; @@ -166,41 +250,86 @@ sub handler { } else { $logmsg .= " (no role)"; } - $logmsg .= ' '.$ENV{'REMOTE_ADDR'}; + my $ip = &Apache::lonnet::get_requestor_ip($r,REMOTE_NOLOOKUP); + $logmsg .= ' '.$ip; &Apache::lonnet::log($env{'user.domain'},$env{'user.name'}, $env{'user.home'},$logmsg); &Apache::loncommon::content_type($r,'text/html'); - #expire the cookie - my $c = new CGI::Cookie(-name => 'lonID', - -value => '', - -expires => '-10y',); - $r->header_out('Set-cookie' => $c); - + #expire the cookies + my %cookies=CGI::Cookie->parse($r->header_in('Cookie')); + foreach my $name (keys(%cookies)) { + next unless ($name =~ /^lon(|S|Link|Pub)ID$/); + my $c = new CGI::Cookie(-name => $name, + -value => '', + -expires => '-10y',); + $r->headers_out->add('Set-cookie' => $c); + } if ($r->header_only) { $r->send_http_header; return OK; } # -------------------------------------------------------- Menu script and info - + + my $windowinfo = &Apache::lonmenu::close(); + # ---------------------------------------------------------------- Get handover - my ($is_balancer) = &Apache::lonnet::check_loadbalancing($env{'user.name'},$env{'user.domain'}); - my %info=('ip' => $ENV{'REMOTE_ADDR'}, + my ($is_balancer,$setcookie,$newcookieid,$otherbalcookie); + my $only_body = 0; + ($is_balancer,undef,$setcookie) = + &Apache::lonnet::check_loadbalancing($env{'user.name'},$env{'user.domain'},'switchserver'); + if ($is_balancer && $setcookie && $env{'form.otherserver'}) { + + # Set a balancer cookie unless browser already sent LON-CAPA load balancer + # cookie which points at the target server + my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r,1); + + if (($found_server eq $env{'form.otherserver'}) && + ($balancer_cookie =~ /^\Q$env{'user.domain'}\E_\Q$env{'user.name'}\E_/)) { + $only_body = 1; + } else { + $newcookieid = &balancer_cookieid($r,$env{'form.otherserver'}, + $env{'user.name'},$env{'user.domain'}); + } + } + if ((!$is_balancer) && ($env{'request.balancercookie'})) { + $otherbalcookie = $env{'request.balancercookie'}; + } + + my %info=('ip' => $ip, 'domain' => $env{'user.domain'}, 'username' => $env{'user.name'}, 'role' => $env{'form.role'}, 'server' => $r->dir_config('lonHostID'), 'balancer' => $is_balancer); + if ($newcookieid) { + $info{'balcookie'} = $newcookieid; + } elsif ($otherbalcookie) { + $info{'otherbalcookie'} = $otherbalcookie; + } if ($env{'form.origurl'}) { $info{'origurl'} = $env{'form.origurl'}; } if ($env{'form.symb'}) { $info{'symb'} = $env{'form.symb'}; } + my $ssologoutscript = ''; if ($env{'request.sso.login'}) { $info{'sso.login'} = $env{'request.sso.login'}; + if (defined($r->dir_config("lonSSOUserLogoutScriptFile_$info{domain}"))) { + if (open(my $fh,'<',$r->dir_config("lonSSOUserLogoutScriptFile_$info{domain}"))) { + $ssologoutscript .= join('',<$fh>); + close($fh); + } + } + if (defined($r->dir_config('lonSSOUserLogoutScriptFile'))) { + if (open(my $fh,'<',$r->dir_config('lonSSOUserLogoutScriptFile'))) { + $ssologoutscript .= join('',<$fh>); + close($fh); + } + } } if ($env{'request.sso.reloginserver'}) { $info{'sso.reloginserver'} = $env{'request.sso.reloginserver'}; @@ -211,7 +340,7 @@ sub handler { '&username='.$env{'user.name'}. '&token='.$token; # --------------------------------------------------------------- Screen Output - return &do_redirect($r, $url, 0); + return &do_redirect($r, $url, $only_body, $windowinfo.$ssologoutscript); } 1;