');
-
-#
-# If the loadbalancing yielded just http:// because perhaps there's no loadbalancing?
-# then just us a relative link to authenticate:
-#
-
-$r->print(<
-
-
-
-
-
-
-
-
-
-
-ENDSERVERFORM
-my $coursecatalog;
-if (($showcoursecat eq '') || ($showcoursecat)) {
- $coursecatalog = &coursecatalog_link($lt{'catalog'});
-}
-my $newuserlink;
-if ($shownewuserlink) {
- $newuserlink = &newuser_link($lt{'newuser'}).'
'; -} -my $logintitle; -if ($loginheader eq 'text') { - $logintitle ='
';
-}
-
-my $noscript_warning='';
-my $helpdeskscript;
-my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
- $version,$authdomain,\$helpdeskscript);
-
-my $loginform=(<
-
-
- :
-
- :
-
- :
-
- - -LFORM - - if ($showbanner) { - $r->print(<
-
-
-HEADER
- }
- $r->print(<
-'; -} -my $logintitle; -if ($loginheader eq 'text') { - $logintitle ='
'.$lt{'log'}.'
'; -} else { - $logintitle = '-
- :
-
- :
-
- - -LFORM - - if ($showbanner) { - $r->print(<
|
- |
-
-
-ENDTOP
- if ($showmainlogo) {
- $r->print('
- $logintitle
-
-
- $noscript_warning
-
-
-| - $loginform - | -
- $loginhelp
- $forgotpw
- $contactblock
- $newuserlink - $coursecatalog -
-- $forgotpw
- $contactblock
- $newuserlink - $coursecatalog -
'. - ' '.$servadm.'
'; - } - if ($showhelpdesk) { - $contactblock .= ''.$lt->{'helpdesk'}.'
'; - my $thisurl = &escape('/adm/login'); - $$helpdeskscript = <<"ENDSCRIPT"; - -ENDSCRIPT - } - $contactblock .= <<"ENDBLOCK"; - $version -ENDBLOCK - return $contactblock; -} - -sub forgotpwdisplay { - my (%lt) = @_; - my $prompt_for_resetpw = 1; - if ($prompt_for_resetpw) { - return ''.$lt{'forgotpw'}.''; - } - return; -} - -sub loginhelpdisplay { - my (%lt) = @_; - my $login_help = 1; - if ($login_help) { - return ''.$lt{'help'}.''; - } - return; -} - -sub coursecatalog_link { - my ($linkname) = @_; - return <<"END"; - $linkname -END -} - -sub newuser_link { - my ($linkname) = @_; - return ' '.$linkname.'
'; -} - -1; -__END__ +# The LearningOnline Network +# Login Screen +# +# $Id: lonlogin.pm,v 1.175 2018/12/02 14:55:59 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::lonlogin; + +use strict; +use Apache::Constants qw(:common); +use Apache::File (); +use Apache::lonnet; +use Apache::loncommon(); +use Apache::lonauth(); +use Apache::lonlocal; +use Apache::migrateuser(); +use lib '/home/httpd/lib/perl/'; +use LONCAPA; +use CGI::Cookie(); + +sub handler { + my $r = shift; + + &Apache::loncommon::get_unprocessed_cgi + (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'}, + $ENV{'REDIRECT_QUERY_STRING'}), + ['interface','username','domain','firsturl','localpath','localres', + 'token','role','symb','iptoken']); + if (!defined($env{'form.firsturl'})) { + &Apache::lonacc::get_posted_cgi($r,['firsturl']); + } + if (!defined($env{'form.firsturl'})) { + if ($ENV{'REDIRECT_URL'} =~ m{^/+tiny/+$LONCAPA::match_domain/+\w+$}) { + $env{'form.firsturl'} = $ENV{'REDIRECT_URL'}; + } + } + +# -- check if they are a migrating user + if (defined($env{'form.token'})) { + 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 => 'lonPubID', + -value => '', + -expires => '-10y',); + $r->header_out('Set-cookie' => $c); + } elsif (($handle eq '') && ($userdom ne '')) { + 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); + } + } + $r->send_http_header; + return OK if $r->header_only; + + +# Are we re-routing? + my $londocroot = $r->dir_config('lonDocRoot'); + if (-e "$londocroot/lon-status/reroute.txt") { + &Apache::lonauth::reroute($r); + return OK; + } + + $env{'form.firsturl'} =~ s/(`)/'/g; + +# Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer) + + my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r,1); + if ($found_server) { + my $hostname = &Apache::lonnet::hostname($found_server); + if ($hostname ne '') { + my $protocol = $Apache::lonnet::protocol{$found_server}; + $protocol = 'http' if ($protocol ne 'https'); + my $dest = '/adm/roles'; + if ($env{'form.firsturl'} ne '') { + $dest = $env{'form.firsturl'}; + } + my $url = $protocol.'://'.$hostname.$dest; + my $start_page = + &Apache::loncommon::start_page('Switching Server ...',undef, + {'redirect' => [0,$url],}); + my $end_page = &Apache::loncommon::end_page(); + $r->print($start_page.$end_page); + 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; + } + } + +# -------------------------------- Prevent users from attempting to login twice + if ($handle ne '') { + &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" + 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; + + (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 '') { + unless ($sessiondata{'sessionserver'}) { + my $redirect = &check_loginvia($domain,$lonhost); + if ($redirect) { + $r->print($redirect); + return OK; + } + } + } + + if (($sessiondata{'domain'}) && + (&Apache::lonnet::domain($sessiondata{'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'); + my $expire = $r->dir_config('lonExpire'); + my $version = $r->dir_config('lonVersion'); + my $host_name = &Apache::lonnet::hostname($lonhost); + +# --------------------------------------------- Default values for login fields + + 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; + { + my $loadfile=Apache::File->new('/proc/loadavg'); + $loadavg=<$loadfile>; + } + $loadavg =~ s/\s.*//g; + + 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'}); + +# ----------------------------------------------------------- Get announcements + my $announcements=&Apache::lonnet::getannounce(); +# -------------------------------------------------------- Set login parameters + + my @hexstr=('0','1','2','3','4','5','6','7', + '8','9','a','b','c','d','e','f'); + my $lkey=''; + for (0..7) { + $lkey.=$hexstr[rand(15)]; + } + + my $ukey=''; + for (0..7) { + $ukey.=$hexstr[rand(15)]; + } + + my $lextkey=hex($lkey); + if ($lextkey>2147483647) { $lextkey-=4294967296; } + + my $uextkey=hex($ukey); + if ($uextkey>2147483647) { $uextkey-=4294967296; } + +# -------------------------------------------------------- Store away log token + my $tokenextras; + if ($env{'form.role'}) { + $tokenextras = '&role='.&escape($env{'form.role'}); + } + if ($env{'form.symb'}) { + if (!$tokenextras) { + $tokenextras = '&'; + } + $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, or hostID does not map to a hostname +# we are in serious trouble + + 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 + { + &Apache::lonnet::hostname($a) cmp + &Apache::lonnet::hostname($b); + } + keys(%Apache::lonnet::spareid)) { + next if ($hostid eq $lonhost); + my $hostname = &Apache::lonnet::hostname($hostid); + next if (($last eq $hostname) || ($hostname eq '')); + $spares.=''. + $hostname.''. + ' '.&mt('(preferred)').''.$/; + $last=$hostname; + } + if ($spares) { + $spares.= '
'; + } + my %all_hostnames = &Apache::lonnet::all_hostnames(); + foreach my $hostid (sort + { + &Apache::lonnet::hostname($a) cmp + &Apache::lonnet::hostname($b); + } + keys(%all_hostnames)) { + next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid}); + my $hostname = &Apache::lonnet::hostname($hostid); + next if (($last eq $hostname) || ($hostname eq '')); + $spares.='
'. + $hostname.''; + $last=$hostname; + } + $r->print( + '' + .'
'.&mt('The LearningOnline Network with CAPA').'
' + .'
'
+ .''.&mt('This LON-CAPA server is temporarily not available for login.').'
'); + if ($spares) { + $r->print(''.&mt('Please attempt to login to one of the following servers:') + .'
' + .$spares); + } + $r->print('' + .'' + ); + return OK; + } + +# ----------------------------------------------- Apparently we are in business + $servadm=~s/\,/\/g; + +# ----------------------------------------------------------- Front page design + my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain); + my $font=&Apache::loncommon::designparm('login.font',$domain); + my $link=&Apache::loncommon::designparm('login.link',$domain); + my $vlink=&Apache::loncommon::designparm('login.vlink',$domain); + my $alink=&Apache::loncommon::designparm('login.alink',$domain); + my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain); + my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain); + my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain); + my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain); + my $logo=&Apache::loncommon::designparm('login.logo',$domain); + my $img=&Apache::loncommon::designparm('login.img',$domain); + my $domainlogo=&Apache::loncommon::domainlogo($domain); + my $showbanner = 1; + my $showmainlogo = 1; + if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) { + $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain); + } + if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) { + $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain); + } + my $showadminmail; + my @possdoms = &Apache::lonnet::current_machine_domains(); + if (grep(/^\Q$domain\E$/,@possdoms)) { + $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain); + } + my $showcoursecat = + &Apache::loncommon::designparm('login.coursecatalog',$domain); + my $shownewuserlink = + &Apache::loncommon::designparm('login.newuser',$domain); + my $showhelpdesk = + &Apache::loncommon::designparm('login.helpdesk',$domain); + my $now=time; + my $js = (<
' if $forgotpw; + my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain); + if ($loginhelp) { + $loginhelp = ''.$lt{'help'}.'
'; + } + +# ---------------------------------------------------- Serve out DES JavaScript + { + my $jsh=Apache::File->new($include."/londes.js"); + $r->print(<$jsh>); + } +# ---------------------------------------------------------- Serve rest of page + + $r->print( + '
'
+);
+
+ $r->print(<
+
+
+
+
+
+
+
+
+ENDSERVERFORM
+ my $coursecatalog;
+ if (($showcoursecat eq '') || ($showcoursecat)) {
+ $coursecatalog = &coursecatalog_link($lt{'catalog'}).'
'; + } + my $newuserlink; + if ($shownewuserlink) { + $newuserlink = &newuser_link($lt{'newuser'}).'
'; + } + my $logintitle = + '
+
+
+ :
+
+ :
+
+ :
+
+ + +LFORM + + if ($showbanner) { + $r->print(<
+
+
+
+'; + } + my $newuserlink; + if ($shownewuserlink) { + $newuserlink = &newuser_link($lt{'newuser'}).'
'; + } + my $logintitle = + '
' + .$lt{'log'} + .'
'; + + my $noscript_warning=''; + my $helpdeskscript; + my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail, + $authdomain,\$helpdeskscript, + $showhelpdesk,\@possdoms); + + my $mobileargs; + if ($clientmobile) { + $mobileargs = 'autocapitalize="off" autocorrect="off"'; + } + my $loginform=(<+
+ :
+
+ :
+
+ + +LFORM + + if ($showbanner) { + $r->print(<
+ 
+
+HEADER
+ }
+ $r->print(<
+ $logintitle
+ $loginform
+ $noscript_warning
+
+
+
+ $loginhelp
+ $forgotpw
+ $contactblock
+ $newuserlink
+ $coursecatalog
+
+
+ENDTOP
+ if ($showmainlogo) {
+ $r->print(' 
'."\n");
+ }
+$r->print(<
+
+ENDTOP + my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow); + $domainrow = <<"END"; +
+
+ $lt{'dom'}:
+
+
+ $domain
+
+
+END
+ $serverrow = <<"END";
+
+
+ $lt{'serv'}:
+
+
+ $lonhost ($role)
+
+
+END
+ if ($loadlim) {
+ $loadrow = <<"END";
+
+
+ $lt{'load'}:
+
+
+ $loadpercent $lt{'perc'}
+
+
+END
+ }
+ if ($uloadlim) {
+ $userloadrow = <<"END";
+
+
+ $lt{'userload'}:
+
+
+ $userloadpercent $lt{'perc'}
+
+
+END
+ }
+ if (($version ne '') && ($version ne '')) {
+ $versionrow = <<"END";
+
+
+ $version
+
+
+END
+ }
+
+ $r->print(<
+
+$domainrow
+$serverrow
+$loadrow
+$userloadrow
+$versionrow
+
+
+ +ENDTOP + my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow); + $domainrow = <<"END"; +
+ $domainlogo
+
+ + + + +$helpdeskscript + +ENDDOCUMENT + my %endargs = ( 'noredirectlink' => 1, ); + $r->print(&Apache::loncommon::end_page(\%endargs)); + return OK; +} + +sub check_loginvia { + my ($domain,$lonhost) = @_; + if ($domain eq '' || $lonhost eq '') { + return; + } + my %domconfhash = &Apache::loncommon::get_domainconf($domain); + my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost}; + my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost}; + my $output; + if ($loginvia ne '') { + my $noredirect; + my $ip = $ENV{'REMOTE_ADDR'}; + if ($ip eq '127.0.0.1') { + $noredirect = 1; + } else { + if ($loginvia_exempt ne '') { + my @exempt = split(',',$loginvia_exempt); + if (grep(/^\Q$ip\E$/,@exempt)) { + $noredirect = 1; + } + } + } + unless ($noredirect) { + my ($newhost,$path); + if ($loginvia =~ /:/) { + ($newhost,$path) = split(':',$loginvia); + } else { + $newhost = $loginvia; + } + if ($newhost ne $lonhost) { + if (&Apache::lonnet::hostname($newhost) ne '') { + $output = &redirect_page($newhost,$path); + } + } + } + } + return $output; +} + +sub redirect_page { + my ($desthost,$path) = @_; + my $protocol = $Apache::lonnet::protocol{$desthost}; + $protocol = 'http' if ($protocol ne 'https'); + unless ($path =~ m{^/}) { + $path = '/'.$path; + } + my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path; + if ($env{'form.firsturl'} ne '') { + $url .='?firsturl='.$env{'form.firsturl'}; + } + my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef, + {'redirect' => [0,$url],}); + my $end_page = &Apache::loncommon::end_page(); + return $start_page.$end_page; +} + +sub contactdisplay { + my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk, + $possdoms) = @_; + my $contactblock; + my $origmail; + if (ref($possdoms) eq 'ARRAY') { + if (grep(/^\Q$authdomain\E$/,@{$possdoms})) { + $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'}; + } + } + my $requestmail = + &Apache::loncommon::build_recipient_list(undef,'helpdeskmail', + $authdomain,$origmail); + unless ($showhelpdesk eq '0') { + if ($requestmail =~ m/[^\@]+\@[^\@]+/) { + $showhelpdesk = 1; + } else { + $showhelpdesk = 0; + } + } + if ($servadm && $showadminmail) { + $contactblock .= $$lt{'servadm'}.':
'. + ''.$servadm.'
'; + } + if ($showhelpdesk) { + $contactblock .= ''.$lt->{'helpdesk'}.'
'; + my $thisurl = &escape('/adm/login'); + $$helpdeskscript = <<"ENDSCRIPT"; + +ENDSCRIPT + } + return $contactblock; +} + +sub forgotpwdisplay { + my (%lt) = @_; + my $prompt_for_resetpw = 1; + if ($prompt_for_resetpw) { + return ''.$lt{'forgotpw'}.''; + } + return; +} + +sub coursecatalog_link { + my ($linkname) = @_; + return <<"END"; + $linkname +END +} + +sub newuser_link { + my ($linkname) = @_; + return ''.$linkname.''; +} + +1; +__END__