version 1.10, 2006/11/23 01:49:41
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version 1.67, 2024/10/09 15:23:35
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Line 29
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Line 29
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package Apache::switchserver; |
package Apache::switchserver; |
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use strict; |
use strict; |
use Apache::Constants qw(:common); |
use Apache::Constants qw(:common :remotehost); |
use Apache::lonnet; |
use Apache::lonnet; |
use Apache::lonmenu; |
use Apache::loncommon; |
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use Digest::MD5 qw(md5_hex); |
use CGI::Cookie(); |
use CGI::Cookie(); |
use Apache::lonlocal; |
use Apache::lonlocal; |
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use LONCAPA qw(:DEFAULT :match); |
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sub init_env { |
sub init_env { |
my ($r) = @_; |
my ($r) = @_; |
Line 42 sub init_env {
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Line 44 sub init_env {
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return $env{'user.environment'}; |
return $env{'user.environment'}; |
} |
} |
my $requrl=$r->uri; |
my $requrl=$r->uri; |
my %cookies=CGI::Cookie->parse($r->header_in('Cookie')); |
my $handle= &Apache::lonnet::check_for_valid_session($r); |
my $lonid=$cookies{'lonID'}; |
if ($handle ne '') { |
my $cookie; |
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if (!$lonid) { return undef; } |
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my $handle=&LONCAPA::clean_handle($lonid->value); |
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my $lonidsdir=$r->dir_config('lonIDsDir'); |
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if ((!-e "$lonidsdir/$handle.id") || ($handle eq '')) { |
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$r->log_reason("Cookie $handle not valid", $r->filename); |
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return undef; |
return undef; |
} |
} |
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my $lonidsdir=$r->dir_config('lonIDsDir'); |
&Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); |
&Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); |
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return $r->dir_config('lonIDsDir')."/$handle.id"; |
return $r->dir_config('lonIDsDir')."/$handle.id"; |
} |
} |
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sub do_redirect { |
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my ($r,$url,$only_body,$extra_text,$write_to_opener) = @_; |
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$r->send_http_header; |
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my $delay = 0.5; |
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if ($only_body && !$extra_text) { |
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$delay = 0; |
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} |
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my $start_page = |
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&Apache::loncommon::start_page('Switching Server ...',undef, |
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{'redirect' => [$delay,$url,'',$write_to_opener,1], |
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'only_body' => $only_body, |
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'switchserver' => 1, |
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'links_disabled' => 1,}); |
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my $end_page = &Apache::loncommon::end_page(); |
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$r->print($start_page.$extra_text.$end_page); |
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unless ($env{'user.name'} eq 'public' && ($env{'user.domain'} eq 'public')) { |
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$r->register_cleanup(\&flush_course_logs); |
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} |
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return OK; |
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} |
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sub balancer_cookieid { |
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my ($r,$desthost,$uname,$udom) = @_; |
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my @hosts = &Apache::lonnet::current_machine_ids(); |
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my $newcookieid; |
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unless (grep(/^\Q$desthost\E$/,@hosts)) { |
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my $balancedir=$r->dir_config('lonBalanceDir'); |
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$newcookieid = &md5_hex(&md5_hex(time.{}.rand().$$)); |
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my $cookie = $udom.'_'.$uname.'_'.$newcookieid; |
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my $balcookie = "balanceID=$cookie; path=/; HttpOnly;"; |
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if (open(my $fh,'>',"$balancedir/$cookie.id")) { |
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print $fh $desthost; |
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close($fh); |
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$r->headers_out->add('Set-cookie' => $balcookie); |
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} |
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} |
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return $newcookieid; |
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} |
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sub flush_course_logs { |
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&Apache::lonnet::flushcourselogs(); |
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return OK; |
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} |
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sub handler { |
sub handler { |
my ($r) = @_; |
my ($r) = @_; |
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my $handle=&init_env($r); |
my $handle=&init_env($r); |
if (!defined($handle)) { return FORBIDDEN; } |
if (!defined($handle)) { return FORBIDDEN; } |
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&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, |
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, |
['otherserver','role']); |
['otherserver','role','origurl','symb','lcssowin','edit']); |
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my $switch_to=$Apache::lonnet::hostname{$env{'form.otherserver'}}; |
my $switch_to=&Apache::lonnet::hostname($env{'form.otherserver'}); |
if (!$env{'form.otherserver'}) { |
if (! $env{'form.otherserver'}) { |
$env{'form.otherserver'}=&Apache::lonnet::spareserver(30000,undef,1); |
$env{'form.otherserver'} = |
$switch_to=$Apache::lonnet::hostname{$env{'form.otherserver'}}; |
&Apache::lonnet::find_existing_session($env{'user.domain'}, |
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$env{'user.name'}); |
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if (! $env{'form.otherserver'}) { |
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$env{'form.otherserver'} = |
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&Apache::lonnet::spareserver($r,30000,undef,1); |
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} |
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$switch_to=&Apache::lonnet::hostname($env{'form.otherserver'}); |
} |
} |
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if (!defined($switch_to)) { return FORBIDDEN; } |
if (!defined($switch_to)) { return FORBIDDEN; } |
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if ($env{'form.role'} && |
my $protocol = 'http'; |
!exists($env{'user.role.'.$env{'form.role'}})) { return FORBIDDEN; } |
if ($env{'form.otherserver'}) { |
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if ($Apache::lonnet::protocol{$env{'form.otherserver'}} eq 'https') { |
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$protocol = $Apache::lonnet::protocol{$env{'form.otherserver'}}; |
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} |
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unless ($env{'form.otherserver'} eq $r->dir_config('lonHostID')) { |
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my $alias = &Apache::lonnet::use_proxy_alias($r,$env{'form.otherserver'}); |
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$switch_to = $alias if ($alias ne ''); |
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} |
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} |
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if ($env{'user.name'} eq 'public' |
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&& $env{'user.domain'} eq 'public') { |
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my $url = $protocol.'://'.$switch_to.$r->uri; |
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unlink($handle); |
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#expire the cookie |
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my $c = new CGI::Cookie(-name => 'lonPubID', |
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-value => '', |
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-expires => '-10y',); |
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$r->header_out('Set-cookie' => $c); |
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return &do_redirect($r,$url,1) |
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} |
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my $skip_canhost_check = ''; |
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my $now = time; |
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if ($env{'form.role'}) { |
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if (!exists($env{'user.role.'.$env{'form.role'}})) { |
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delete($env{'form.role'}); |
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} else { |
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my ($start,$end) = split(/\./,$env{'user.role.'.$env{'form.role'}}); |
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if (($start && $start > $now) || ($end && $end < $now)) { |
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delete($env{'form.role'}); |
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} elsif ($env{'form.role'} eq 'au./'.$env{'user.domain'}.'/') { |
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if (&Apache::lonnet::homeserver($env{'user.name'},$env{'user.domain'}) eq $env{'form.otherserver'}) { |
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$skip_canhost_check = 1; |
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} |
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} elsif ($env{'form.role'} =~ m{^[ac]a\./($match_domain)/($match_username)$}) { |
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my ($audom,$auname) = ($1,$2); |
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if (&Apache::lonnet::homeserver($auname,$audom) eq $env{'form.otherserver'}) { |
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if ((&Apache::lonnet::will_trust('othcoau',$env{'user.domain'},$audom)) && |
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(&Apache::lonnet::will_trust('coaurem',$audom,$env{'user.domain'}))) { |
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$skip_canhost_check = 1; |
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} |
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} |
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} |
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} |
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} |
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unless ($skip_canhost_check) { |
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my $canhost = &Apache::lonnet::can_switchserver($env{'user.domain'},$env{'form.otherserver'}); |
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unless ($canhost) { |
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if (($env{'request.course.id'}) && ($env{'form.symb'} ne '') && |
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(&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) { |
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my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'}; |
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my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'}; |
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if (($cdom ne '') && ($cnum ne '') && ($env{'form.role'} =~ m{^([^.]+)\Q./$cdom/$cnum\E$})) { |
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my $symb = &Apache::lonnet::symbclean($env{'form.symb'}); |
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my ($map,$idx,$url) = &Apache::lonnet::decode_symb($symb); |
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if (&Apache::lonnet::symbverify($symb,$url)) { |
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my $fileloc = &Apache::lonnet::declutter(&Apache::lonnet::filelocation("",$url)); |
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my $resurl = &Apache::lonnet::clutter($url); |
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if ($resurl =~ m{^/res/($match_domain)/($match_username)/}) { |
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my ($audom,$auname) = ($1,$2); |
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if (&Apache::lonnet::homeserver($auname,$audom) eq $env{'form.otherserver'}) { |
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my @possroles = ("user.role.au./$audom/","user.role.ca./$audom/$auname","user.role.aa./$audom/$auname"); |
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my $hasrole; |
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foreach my $rolekey (@possroles) { |
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if (exists($env{$rolekey})) { |
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my ($start,$end) = split(/\./,$env{$rolekey}); |
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unless (($start && $start > $now) || ($end && $end < $now)) { |
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if ($rolekey eq "user.role.au./$audom/") { |
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$hasrole = $rolekey; |
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} elsif ((&Apache::lonnet::will_trust('othcoau',$env{'user.domain'},$audom)) && |
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(&Apache::lonnet::will_trust('coaurem',$audom,$env{'user.domain'}))) { |
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$hasrole = $rolekey; |
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} |
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} |
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if ($hasrole) { |
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$hasrole =~ s/^\Quser.role.\E//; |
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last; |
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} |
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} |
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} |
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if ($hasrole) { |
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$env{'form.role'} = $hasrole; |
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$env{'form.origurl'} = &Apache::lonnet::deversion($resurl); |
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$env{'form.origurl'} =~ s{^/res/}{/priv/}; |
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delete($env{'form.symb'}); |
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$canhost = 1; |
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if ($env{'form.edit'}) { |
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my $ip = &Apache::lonnet::get_requestor_ip($r,REMOTE_NOLOOKUP); |
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my %info=('ip' => $ip, |
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'domain' => $env{'user.domain'}, |
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'username' => $env{'user.name'}, |
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'home' => $env{'user.home'}, |
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'role' => $env{'form.role'}, |
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'server' => $r->dir_config('lonHostID'), |
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'origurl' => $env{'form.origurl'}); |
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&Apache::loncommon::content_type($r,'text/html'); |
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my $token = &Apache::lonnet::tmpput(\%info,$env{'form.otherserver'}); |
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my $url = $protocol.'://'.$switch_to.'/adm/login?'. |
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'domain='.$env{'user.domain'}. |
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'&username='.$env{'user.name'}. |
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'&token='.$token; |
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return &do_redirect($r,$url,0); |
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} |
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} |
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} |
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} |
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} |
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} |
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} |
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} |
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unless ($canhost) { return FORBIDDEN; } |
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} |
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#remove session env, and log event |
#remove session env, and log event |
unlink($handle); |
if (unlink($handle)) { |
my %temp=('switchserver' => time.':'.$env{'form.otherserver'}, |
if ($env{'user.linkedenv'} ne '') { |
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my $lonidsdir=$r->dir_config('lonIDsDir'); |
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if (($env{'user.linkedenv'} =~ /^[a-f0-9]+_linked$/) && |
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(-l "$lonidsdir/$env{'user.linkedenv'}.id") && |
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(readlink("$lonidsdir/$env{'user.linkedenv'}.id") eq $handle)) { |
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unlink("$lonidsdir/$env{'user.linkedenv'}.id"); |
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} |
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} |
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} |
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my %temp=('switchserver' => $now.':'.$env{'form.otherserver'}, |
$env{'form.role'}); |
$env{'form.role'}); |
&Apache::lonnet::put('email_status',\%temp); |
&Apache::lonnet::put('email_status',\%temp); |
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my $logmsg = "Switch Server to $env{'form.otherserver'}"; |
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if ($env{'form.role'}) { |
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$logmsg .= " with role: $env{'form.role'}"; |
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} elsif (($env{'form.lti.reqcrs'}) && ($env{'form.lti.reqrole'} eq 'cc')) { |
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$logmsg .= " to create new LTI course"; |
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} elsif ($env{'form.lti.selfenrollrole'}) { |
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$logmsg .= " to selfenroll with role: $env{'form.lti.selfenrollrole'}"; |
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} else { |
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$logmsg .= " (no role)"; |
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} |
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my $ip = &Apache::lonnet::get_requestor_ip($r,REMOTE_NOLOOKUP); |
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$logmsg .= ' '.$ip; |
&Apache::lonnet::log($env{'user.domain'},$env{'user.name'}, |
&Apache::lonnet::log($env{'user.domain'},$env{'user.name'}, |
$env{'user.home'}, |
$env{'user.home'},$logmsg); |
"Switch Server to $env{'form.otherserver'} with role $env{'form.role'} $ENV{'REMOTE_ADDR'}"); |
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&Apache::loncommon::content_type($r,'text/html'); |
&Apache::loncommon::content_type($r,'text/html'); |
$r->send_http_header; |
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return OK if $r->header_only; |
#expire the cookies |
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my %cookies=CGI::Cookie->parse($r->header_in('Cookie')); |
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foreach my $name (keys(%cookies)) { |
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next unless ($name =~ /^lon(|S|Link|Pub)ID$/); |
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my $c = new CGI::Cookie(-name => $name, |
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-value => '', |
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-expires => '-10y',); |
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$r->headers_out->add('Set-cookie' => $c); |
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} |
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if ($r->header_only) { |
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$r->send_http_header; |
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return OK; |
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} |
# -------------------------------------------------------- Menu script and info |
# -------------------------------------------------------- Menu script and info |
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my $windowinfo=&Apache::lonmenu::close(); |
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$windowinfo.=&Apache::lonnavmaps::close(); |
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# ---------------------------------------------------------------- Get handover |
# ---------------------------------------------------------------- Get handover |
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my %info=('ip' => $ENV{'REMOTE_ADDR'}, |
my ($is_balancer,$setcookie,$newcookieid,$otherbalcookie,$offloadto,$dom_balancers); |
'domain' => $env{'user.domain'}, |
my $only_body = 0; |
'username' => $env{'user.name'}, |
($is_balancer,undef,$setcookie,$offloadto,$dom_balancers) = |
'role' => $env{'form.role'}, |
&Apache::lonnet::check_loadbalancing($env{'user.name'},$env{'user.domain'},'switchserver'); |
'server' => $r->dir_config('lonHostID')); |
if ($is_balancer && $setcookie && $env{'form.otherserver'}) { |
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# Set a balancer cookie unless browser already sent LON-CAPA load balancer |
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# cookie which points at the target server |
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my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r,1); |
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if (($found_server eq $env{'form.otherserver'}) && |
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($balancer_cookie =~ /^\Q$env{'user.domain'}\E_\Q$env{'user.name'}\E_/)) { |
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$only_body = 1; |
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} else { |
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$newcookieid = &balancer_cookieid($r,$env{'form.otherserver'}, |
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$env{'user.name'},$env{'user.domain'}); |
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} |
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} |
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if ((!$is_balancer) && ($env{'request.balancercookie'})) { |
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$otherbalcookie = $env{'request.balancercookie'}; |
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} |
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my %info=('ip' => $ip, |
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'domain' => $env{'user.domain'}, |
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'username' => $env{'user.name'}, |
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'home' => $env{'user.home'}, |
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'role' => $env{'form.role'}, |
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'server' => $r->dir_config('lonHostID'), |
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'balancer' => $is_balancer, |
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'dom_balancers' => $dom_balancers, |
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'offloadto' => ''); |
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if (ref($offloadto) eq 'HASH') { |
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foreach my $key (keys(%{$offloadto})) { |
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if (ref($offloadto->{$key}) eq 'ARRAY') { |
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$info{'offloadto'} .= $key.'='.join(',',@{$offloadto->{$key}}).'&'; |
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} |
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} |
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$info{'offloadto'} =~ s/\&$//; |
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} elsif (ref($offloadto) eq 'ARRAY') { |
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$info{'offloadto'} = join(',',@{$offloadto}); |
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} |
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if ($newcookieid) { |
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$info{'balcookie'} = $newcookieid; |
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} elsif ($otherbalcookie) { |
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$info{'otherbalcookie'} = $otherbalcookie; |
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} |
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if ($env{'form.origurl'}) { |
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$info{'origurl'} = $env{'form.origurl'}; |
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if ($env{'form.origurl'} eq '/adm/email') { |
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if ($env{'request.display'} && ($env{'request.mailrecip'} eq "$env{'user.name'}:$env{'user.domain'}")) { |
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$info{'display'} = &escape($env{'request.display'}); |
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$info{'mailrecip'} = &escape($env{'request.mailrecip'}); |
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} |
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} |
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} |
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if ($env{'form.symb'}) { |
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$info{'symb'} = $env{'form.symb'}; |
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} |
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my $ssologoutscript = ''; |
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my $write_to_opener; |
if ($env{'request.sso.login'}) { |
if ($env{'request.sso.login'}) { |
$info{'sso.login'} = $env{'request.sso.login'}; |
$info{'sso.login'} = $env{'request.sso.login'}; |
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if (defined($r->dir_config("lonSSOUserLogoutScriptFile_$info{domain}"))) { |
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if (open(my $fh,'<',$r->dir_config("lonSSOUserLogoutScriptFile_$info{domain}"))) { |
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$ssologoutscript .= join('',<$fh>); |
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close($fh); |
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} |
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} |
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if (defined($r->dir_config('lonSSOUserLogoutScriptFile'))) { |
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if (open(my $fh,'<',$r->dir_config('lonSSOUserLogoutScriptFile'))) { |
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$ssologoutscript .= join('',<$fh>); |
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close($fh); |
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} |
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} |
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} |
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if ($env{'request.sso.reloginserver'}) { |
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$info{'sso.reloginserver'} = $env{'request.sso.reloginserver'}; |
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} |
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if ($env{'request.linkprot'}) { |
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$info{'linkprot'} = $env{'request.linkprot'}; |
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foreach my $item ('linkprotuser','linkprotexit','linkprotpbid','linkprotpburl') { |
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if ($env{'request.'.$item}) { |
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$info{$item} = $env{'request.'.$item}; |
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} |
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} |
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} elsif ($env{'request.linkkey'} ne '') { |
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$info{'linkkey'} = $env{'request.linkkey'}; |
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} |
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if ($env{'request.deeplink.login'}) { |
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$info{'deeplink.login'} = $env{'request.deeplink.login'}; |
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} |
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if ($env{'request.lti.login'}) { |
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$info{'lti.login'} = $env{'request.lti.login'}; |
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} |
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if ($env{'request.lti.uri'}) { |
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$info{'lti.uri'} = $env{'request.lti.uri'}; |
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} |
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if ($env{'request.lti.reqcrs'}) { |
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$info{'lti.reqcrs'} = $env{'request.lti.reqcrs'}; |
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} |
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if ($env{'request.lti.reqrole'}) { |
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$info{'lti.reqrole'} = $env{'request.lti.reqrole'}; |
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} |
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if ($env{'request.lti.selfenrollrole'}) { |
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$info{'lti.selfenrollrole'} = $env{'request.lti.selfenrollrole'}; |
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} |
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if ($env{'request.lti.sourcecrs'}) { |
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$info{'lti.sourcecrs'} = $env{'request.lti.sourcecrs'}; |
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} |
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if ($env{'request.lti.passbackid'}) { |
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$info{'lti.passbackid'} = $env{'request.lti.passbackid'}; |
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} |
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if ($env{'request.lti.passbackurl'}) { |
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$info{'lti.passbackurl'} = $env{'request.lti.passbackurl'}; |
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} |
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if ($env{'request.lti.rosterid'}) { |
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$info{'lti.rosterid'} = $env{'request.lti.rosterid'}; |
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} |
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if ($env{'request.lti.rosterurl'}) { |
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$info{'lti.rosterurl'} = $env{'request.lti.rosterurl'}; |
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} |
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if ($env{'request.lti.target'}) { |
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$info{'lti.target'} = $env{'request.lti.target'}; |
} |
} |
my $token = &Apache::lonnet::tmpput(\%info,$env{'form.otherserver'}); |
my $token = &Apache::lonnet::tmpput(\%info,$env{'form.otherserver'}); |
my $switch='<meta HTTP-EQUIV="Refresh" CONTENT="0.5; url=http://'.$switch_to.'/adm/login?domain='.$env{'user.domain'}.'&username='.$env{'user.name'}.'&token='.$token.'">'; |
my @args = ("domain=$env{'user.domain'}", |
my $start_page = &Apache::loncommon::start_page('Switching Server ...', |
"username=$env{'user.name'}", |
$switch, |
"token=$token"); |
{'no_inline_link' => 1,}); |
my $url = $protocol.'://'.$switch_to.'/adm/login?'; |
my $end_page = &Apache::loncommon::end_page(); |
if ($env{'form.lcssowin'}) { |
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$url .= join('&',@args); |
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$only_body = 1; |
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} else { |
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$url .= join('&',@args); |
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} |
# --------------------------------------------------------------- Screen Output |
# --------------------------------------------------------------- Screen Output |
$r->print($start_page.$windowinfo.$end_page); |
return &do_redirect($r, $url, $only_body, $ssologoutscript, $env{'form.lcssowin'}); |
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&Apache::lonnet::flushcourselogs(); |
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return OK; |
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} |
} |
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1; |
1; |