--- loncom/auth/lonlogin.pm 2010/03/17 14:37:43 1.135 +++ loncom/auth/lonlogin.pm 2018/09/03 22:20:42 1.158.2.6.2.2 @@ -1,7 +1,7 @@ # The LearningOnline Network # Login Screen # -# $Id: lonlogin.pm,v 1.135 2010/03/17 14:37:43 raeburn Exp $ +# $Id: lonlogin.pm,v 1.158.2.6.2.2 2018/09/03 22:20:42 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -38,6 +38,7 @@ use Apache::lonlocal; use Apache::migrateuser(); use lib '/home/httpd/lib/perl/'; use LONCAPA; +use CGI::Cookie(); sub handler { my $r = shift; @@ -46,7 +47,7 @@ sub handler { (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'}, $ENV{'REDIRECT_QUERY_STRING'}), ['interface','username','domain','firsturl','localpath','localres', - 'token','role','symb']); + 'token','role','symb','iptoken']); if (!defined($env{'form.firsturl'})) { &Apache::lonacc::get_posted_cgi($r,['firsturl']); } @@ -56,80 +57,136 @@ sub handler { return &Apache::migrateuser::handler($r); } +# For "public user" - remove any exising "public" cookie, as user really wants to log-in + my ($handle,$lonidsdir,$expirepub,$userdom); + unless ($r->header_only) { + $handle = &Apache::lonnet::check_for_valid_session($r,'lonID',undef,\$userdom); + if ($handle ne '') { + $lonidsdir=$r->dir_config('lonIDsDir'); + if ($handle=~/^publicuser\_/) { + unlink($r->dir_config('lonIDsDir')."/$handle.id"); + undef($handle); + undef($userdom); + $expirepub = 1; + } + } + } + &Apache::loncommon::no_cache($r); &Apache::lonlocal::get_language_handle($r); &Apache::loncommon::content_type($r,'text/html'); + if ($expirepub) { + my $c = new CGI::Cookie(-name => 'lonID', + -value => '', + -expires => '-10y',); + $r->header_out('Set-cookie' => $c); + } elsif (($handle eq '') && ($userdom ne '')) { + my $c = new CGI::Cookie(-name => 'lonID', + -value => '', + -expires => '-10y',); + $r->headers_out->add('Set-cookie' => $c); + } $r->send_http_header; return OK if $r->header_only; # Are we re-routing? - if (-e '/home/httpd/html/lon-status/reroute.txt') { + my $londocroot = $r->dir_config('lonDocRoot'); + if (-e "$londocroot/lon-status/reroute.txt") { &Apache::lonauth::reroute($r); return OK; } +# +# If browser sent an old cookie for which the session file had been removed +# check if configuration for user's domain has a portal URL set. If so +# switch user's log-in to the portal. +# + + if (($handle eq '') && ($userdom ne '')) { + my %domdefaults = &Apache::lonnet::get_domain_defaults($userdom); + if ($domdefaults{'portal_def'} =~ /^https?\:/) { + my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef, + {'redirect' => [0,$domdefaults{'portal_def'}],}); + my $end_page = &Apache::loncommon::end_page(); + $r->print($start_page.$end_page); + return OK; + } + } + + $env{'form.firsturl'} =~ s/(`)/'/g; # -------------------------------- Prevent users from attempting to login twice - my $handle = &Apache::lonnet::check_for_valid_session($r); if ($handle ne '') { - my $lonidsdir=$r->dir_config('lonIDsDir'); - if ($handle=~/^publicuser\_/) { -# For "public user" - remove it, we apparently really want to login - unlink($r->dir_config('lonIDsDir')."/$handle.id"); - } else { -# Indeed, a valid token is found - &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); - my $start_page = - &Apache::loncommon::start_page('Already logged in'); - my $end_page = - &Apache::loncommon::end_page(); - my $dest = '/adm/roles'; - if ($env{'form.firsturl'} ne '') { - $dest = $env{'form.firsturl'}; - } - $r->print( - $start_page - .'
'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].', - '','','','').'
' - .$end_page - ); - return OK; + &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); + my $start_page = + &Apache::loncommon::start_page('Already logged in'); + my $end_page = + &Apache::loncommon::end_page(); + my $dest = '/adm/roles'; + if ($env{'form.firsturl'} ne '') { + $dest = $env{'form.firsturl'}; } + $r->print( + $start_page + .''.&mt('You are already logged in!').'
' + .''.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].', + '','','','').'
' + .$end_page + ); + return OK; } # ---------------------------------------------------- No valid token, continue - # ---------------------------- Not possible to really login to domain "public" +# ---------------------------- Not possible to really login to domain "public" if ($env{'form.domain'} eq 'public') { $env{'form.domain'}=''; $env{'form.username'}=''; } + +# ------ Is this page requested because /adm/migrateuser detected an IP change? + my %sessiondata; + if ($env{'form.iptoken'}) { + %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'}); + unless ($sessiondata{'sessionserver'}) { + my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'}); + delete($env{'form.iptoken'}); + } + } # ----------------------------------------------------------- Process Interface $env{'form.interface'}=~s/\W//g; - my $httpbrowser=$ENV{"HTTP_USER_AGENT"}; + (undef,undef,undef,undef,undef,undef,my $clientmobile) = + &Apache::loncommon::decode_user_agent(); my $iconpath= &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL')); my $lonhost = $r->dir_config('lonHostID'); my $domain = &Apache::lonnet::default_login_domain(); + my $defdom = $domain; if ($lonhost ne '') { - my $redirect = &check_loginvia($domain,$lonhost); - if ($redirect) { - $r->print($redirect); - return OK; - } + unless ($sessiondata{'sessionserver'}) { + my $redirect = &check_loginvia($domain,$lonhost); + if ($redirect) { + $r->print($redirect); + return OK; + } + } } - if (($env{'form.domain'}) && + if (($sessiondata{'domain'}) && + (&Apache::lonnet::domain($env{'form.domain'},'description'))) { + $domain=$sessiondata{'domain'}; + } elsif (($env{'form.domain'}) && (&Apache::lonnet::domain($env{'form.domain'},'description'))) { $domain=$env{'form.domain'}; } + my $role = $r->dir_config('lonRole'); my $loadlim = $r->dir_config('lonLoadLim'); + my $uloadlim= $r->dir_config('lonUserLoadLim'); my $servadm = $r->dir_config('lonAdmEMail'); my $tabdir = $r->dir_config('lonTabDir'); my $include = $r->dir_config('lonIncludes'); @@ -138,9 +195,20 @@ sub handler { my $host_name = &Apache::lonnet::hostname($lonhost); # --------------------------------------------- Default values for login fields - - my $authusername=($env{'form.username'}?$env{'form.username'}:''); - my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain); + + my ($authusername,$authdomain); + if ($sessiondata{'username'}) { + $authusername=$sessiondata{'username'}; + } else { + $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'}); + $authusername=($env{'form.username'}?$env{'form.username'}:''); + } + if ($sessiondata{'domain'}) { + $authdomain=$sessiondata{'domain'}; + } else { + $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'}); + $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain); + } # ---------------------------------------------------------- Determine own load my $loadavg; @@ -149,18 +217,17 @@ sub handler { $loadavg=<$loadfile>; } $loadavg =~ s/\s.*//g; - my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim); - my $userloadpercent=&Apache::lonnet::userload(); -# ------------------------------------------------------- Do the load balancing - my $otherserver= &Apache::lonnet::absolute_url($host_name); + my ($loadpercent,$userloadpercent); + if ($loadlim) { + $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim); + } + if ($uloadlim) { + $userloadpercent=&Apache::lonnet::userload(); + } + my $firsturl= ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'}); -# ---------------------------------------------------------- Are we overloaded? - if ((($userloadpercent>100.0)||($loadpercent>100.0))) { - my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent); - if ($unloaded) { $otherserver=$unloaded; } - } # ----------------------------------------------------------- Get announcements my $announcements=&Apache::lonnet::getannounce(); @@ -195,13 +262,23 @@ sub handler { } $tokenextras .= '&symb='.&escape($env{'form.symb'}); } + if ($env{'form.iptoken'}) { + if (!$tokenextras) { + $tokenextras = '&&'; + } + $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'}); + } my $logtoken=Apache::lonnet::reply( 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras, $lonhost); -# ------------------- If we cannot talk to ourselves, we are in serious trouble +# -- If we cannot talk to ourselves, or hostID does not map to a hostname +# we are in serious trouble - if ($logtoken eq 'con_lost') { + if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) { + if ($logtoken eq 'no_such_host') { + &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab'); + } my $spares=''; my $last; foreach my $hostid (sort @@ -212,7 +289,7 @@ sub handler { keys(%Apache::lonnet::spareid)) { next if ($hostid eq $lonhost); my $hostname = &Apache::lonnet::hostname($hostid); - next if ($last eq $hostname); + next if (($last eq $hostname) || ($hostname eq '')); $spares.=''.&mt('Please attempt to login to one of the following servers:').'
' - .$spares - .'' - .'' -); -return OK; -} + .''.&mt('Please attempt to login to one of the following servers:') + .'
' + .$spares); + } + $r->print('' + .'