--- loncom/auth/lonlogin.pm 2017/02/17 18:37:05 1.169 +++ loncom/auth/lonlogin.pm 2021/10/08 14:45:45 1.190 @@ -1,7 +1,7 @@ # The LearningOnline Network # Login Screen # -# $Id: lonlogin.pm,v 1.169 2017/02/17 18:37:05 raeburn Exp $ +# $Id: lonlogin.pm,v 1.190 2021/10/08 14:45:45 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -37,7 +37,9 @@ use Apache::lonauth(); use Apache::lonlocal; use Apache::migrateuser(); use lib '/home/httpd/lib/perl/'; -use LONCAPA; +use LONCAPA qw(:DEFAULT :match); +use URI::Escape; +use HTML::Entities(); use CGI::Cookie(); sub handler { @@ -47,10 +49,22 @@ sub handler { (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'}, $ENV{'REDIRECT_QUERY_STRING'}), ['interface','username','domain','firsturl','localpath','localres', - 'token','role','symb','iptoken']); + 'token','role','symb','iptoken','btoken','ltoken','linkkey','saml']); if (!defined($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'} = $ENV{'REDIRECT_URL'}; + } + } + if (($env{'form.firsturl'} =~ m{^/+tiny/+$LONCAPA::match_domain/+\w+$}) && + (!$env{'form.ltoken'}) && (!$env{'form.linkkey'})) { + &Apache::lonacc::get_posted_cgi($r,['linkkey']); + } + if ($env{'form.firsturl'} eq '/adm/logout') { + delete($env{'form.firsturl'}); + } # -- check if they are a migrating user if (defined($env{'form.token'})) { @@ -58,15 +72,16 @@ sub handler { } # For "public user" - remove any exising "public" cookie, as user really wants to log-in - my ($handle,$lonidsdir,$expire); + my ($handle,$lonidsdir,$expirepub,$userdom); + $lonidsdir=$r->dir_config('lonIDsDir'); unless ($r->header_only) { - $handle = &Apache::lonnet::check_for_valid_session($r); + $handle = &Apache::lonnet::check_for_valid_session($r,'lonID',undef,\$userdom); if ($handle ne '') { - $lonidsdir=$r->dir_config('lonIDsDir'); if ($handle=~/^publicuser\_/) { unlink($r->dir_config('lonIDsDir')."/$handle.id"); undef($handle); - $expire = 1; + undef($userdom); + $expirepub = 1; } } } @@ -74,11 +89,20 @@ sub handler { &Apache::loncommon::no_cache($r); &Apache::lonlocal::get_language_handle($r); &Apache::loncommon::content_type($r,'text/html'); - if ($expire) { - my $c = new CGI::Cookie(-name => 'lonPublic', + if ($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; @@ -91,7 +115,93 @@ sub handler { return OK; } - $env{'form.firsturl'} =~ s/(`)/'/g; + my $lonhost = $r->dir_config('lonHostID'); + +# Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer) + + my ($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 '') { + if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) { + $dest = &uri_escape_utf8($env{'form.firsturl'}); + } else { + $dest = &uri_escape($env{'form.firsturl'}); + } + $dest = &HTML::Entities::encode($dest,"'"); + } + my %info = ( + balcookie => $lonhost.':'.$balancer_cookie, + ); + if ($env{'form.ltoken'}) { + my %link_info = &Apache::lonnet::tmpget($env{'form.ltoken'}); + if ($link_info{'linkprot'}) { + $info{'linkprot'} = $link_info{'linkprot'}; + } + &Apache::lonnet::tmpdel($env{'form.ltoken'}); + delete($env{'form.ltoken'}); + } elsif ($env{'form.linkkey'}) { + $info{'linkkey'} = $env{'form.linkkey'}; + delete($env{'form.linkkey'}); + } + my $balancer_token = &Apache::lonnet::tmpput(\%info,$found_server); + if ($balancer_token) { + $dest .= (($dest=~/\?/)?'&':'?') . 'btoken='.$balancer_token; + } + unless ($found_server eq $lonhost) { + my $alias = &Apache::lonnet::use_proxy_alias($r,$found_server); + $hostname = $alias if ($alias ne ''); + } + 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.$end_page); + return OK; + } + } + +# +# Check if a LON-CAPA load balancer sent user here because user's browser sent +# it a balancer cookie for an active session on this server. +# + + my ($balcookie,$linkprot,$linkkey); + if ($env{'form.btoken'}) { + my %info = &Apache::lonnet::tmpget($env{'form.btoken'}); + $balcookie = $info{'balcookie'}; + if ($balcookie) { + if ($info{'linkprot'}) { + $linkprot = $info{'linkprot'}; + } elsif ($info{'linkkey'}) { + $linkkey = $info{'linkkey'}; + } + } + &Apache::lonnet::tmpdel($env{'form.btoken'}); + delete($env{'form.btoken'}); + } + +# +# If browser sent an old cookie for which the session file had been removed +# check if configuration for user's domain has a portal URL set. If so +# switch user's log-in to the portal. +# + + if (($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 '') { @@ -102,7 +212,68 @@ sub handler { &Apache::loncommon::end_page(); my $dest = '/adm/roles'; if ($env{'form.firsturl'} ne '') { - $dest = $env{'form.firsturl'}; + if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) { + $dest = &uri_escape_utf8($env{'form.firsturl'}); + } else { + $dest = &uri_escape($env{'form.firsturl'}); + } + $dest = &HTML::Entities::encode($dest,"'"); + } + if (($env{'form.ltoken'}) || ($linkprot)) { + unless ($linkprot) { + my %info = &Apache::lonnet::tmpget($env{'form.ltoken'}); + $linkprot = $info{'linkprot'}; + my $delete = &Apache::lonnet::tmpdel($env{'form.ltoken'}); + delete($env{'form.ltoken'}); + } + if ($linkprot) { + my ($linkprotector,$deeplink) = split(/:/,$linkprot,2); + if ($env{'user.linkprotector'}) { + my @protectors = split(/,/,$env{'user.linkprotector'}); + unless (grep(/^\Q$linkprotector\E$/,@protectors)) { + push(@protectors,$linkprotector); + @protectors = sort { $a <=> $b } @protectors; + &Apache::lonnet::appenv({'user.linkprotector' => join(',',@protectors)}); + } + } else { + &Apache::lonnet::appenv({'user.linkprotector' => $linkprotector }); + } + if ($env{'user.linkproturi'}) { + my @proturis = split(/,/,$env{'user.linkproturi'}); + unless (grep(/^\Q$deeplink\E$/,@proturis)) { + push(@proturis,$deeplink); + @proturis = sort @proturis; + &Apache::lonnet::appenv({'user.linkproturi' => join(',',@proturis)}); + } + } else { + &Apache::lonnet::appenv({'user.linkproturi' => $deeplink}); + } + } + } elsif (($env{'form.linkkey'}) || ($linkkey)) { + if ($env{'form.firsturl'} =~ m{^/tiny/$match_domain/\w+$}) { + if ($linkkey eq '') { + $linkkey = $env{'form.linkkey'}; + } + if ($env{'user.deeplinkkey'}) { + my @linkkeys = split(/,/,$env{'user.deeplinkkey'}); + unless (grep(/^\Q$linkkey\E$/,@linkkeys)) { + push(@linkkeys,$linkkey); + &Apache::lonnet::appenv({'user.deeplinkkey' => join(',',sort(@linkkeys))}); + } + } else { + &Apache::lonnet::appenv({'user.deeplinkkey' => $linkkey}); + } + my $deeplink = $env{'form.firsturl'}; + if ($env{'user.keyedlinkuri'}) { + my @keyeduris = split(/,/,$env{'user.keyedlinkuri'}); + unless (grep(/^\Q$deeplink\E$/,@keyeduris)) { + push(@keyeduris,$deeplink); + &Apache::lonnet::appenv({'user.keyedlinkuri' => join(',',sort(@keyeduris))}); + } + } else { + &Apache::lonnet::appenv({'user.keyedlinkuri' => $deeplink}); + } + } } $r->print( $start_page @@ -140,12 +311,11 @@ sub handler { 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); + my $redirect = &check_loginvia($domain,$lonhost,$lonidsdir,$balcookie,$linkprot); if ($redirect) { $r->print($redirect); return OK; @@ -154,7 +324,7 @@ sub handler { } if (($sessiondata{'domain'}) && - (&Apache::lonnet::domain($env{'form.domain'},'description'))) { + (&Apache::lonnet::domain($sessiondata{'domain'},'description'))) { $domain=$sessiondata{'domain'}; } elsif (($env{'form.domain'}) && (&Apache::lonnet::domain($env{'form.domain'},'description'))) { @@ -245,6 +415,22 @@ sub handler { } $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'}); } + if ($env{'form.ltoken'}) { + my %info = &Apache::lonnet::tmpget($env{'form.ltoken'}); + &Apache::lonnet::tmpdel($env{'form.ltoken'}); + delete($env{'form.ltoken'}); + if ($info{'linkprot'}) { + if (!$tokenextras) { + $tokenextras = '&&&'; + } + $tokenextras .= '&linkprot='.&escape($info{'linkprot'}); + } + } elsif ($env{'form.linkkey'}) { + if (!$tokenextras) { + $tokenextras = '&&&'; + } + $tokenextras .= '&linkkey='.&escape($env{'form.linkkey'}); + } my $logtoken=Apache::lonnet::reply( 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras, $lonhost); @@ -257,22 +443,36 @@ sub handler { &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$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)) { + my (@sparehosts,%spareservers); + my $sparesref = &Apache::lonnet::this_host_spares($defdom); + if (ref($sparesref) eq 'HASH') { + foreach my $key (keys(%{$sparesref})) { + if (ref($sparesref->{$key}) eq 'ARRAY') { + my @sorted = sort { &Apache::lonnet::hostname($a) cmp + &Apache::lonnet::hostname($b); + } @{$sparesref->{$key}}; + if (@sorted) { + if ($key eq 'primary') { + unshift(@sparehosts,@sorted); + } elsif ($key eq 'default') { + push(@sparehosts,@sorted); + } + } + } + } + } + foreach my $hostid (@sparehosts) { next if ($hostid eq $lonhost); my $hostname = &Apache::lonnet::hostname($hostid); - next if (($last eq $hostname) || ($hostname eq '')); - $spares.='
'. $hostname.''. - ' '.&mt('(preferred)').''.$/; - $last=$hostname; + ' '.&mt('(preferred)').''.$/; } if ($spares) { $spares.= '
'; @@ -284,23 +484,26 @@ sub handler { &Apache::lonnet::hostname($b); } keys(%all_hostnames)) { - next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid}); + next if ($hostid eq $lonhost); my $hostname = &Apache::lonnet::hostname($hostid); - next if (($last eq $hostname) || ($hostname eq '')); - $spares.='
'. $hostname.''; - $last=$hostname; } $r->print( - '' - .'' + '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">' + .'<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">' + .'<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>' .&mt('The LearningOnline Network with CAPA') .'' .'' .'

'.&mt('The LearningOnline Network with CAPA').'

' - .'' + .'broken icon' .'

'.&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:') @@ -392,17 +595,9 @@ function enableInput() { ENDSCRIPT -# --------------------------------------------------- Print login screen header - - my %add_entries = ( - bgcolor => "$mainbg", - text => "$font", - link => "$link", - vlink => "$vlink", - alink => "$alink", - onload => 'javascript:enableInput();',); - - my ($lonhost_in_use,$headextra,$headextra_exempt,@hosts,%defaultdomconf); + my ($lonhost_in_use,@hosts,%defaultdomconf,$saml_prefix,$saml_landing, + $samlssotext,$samlnonsso,$samlssoimg,$samlssoalt,$samlssourl,$samltooltip); + %defaultdomconf = &Apache::loncommon::get_domainconf($defdom); @hosts = &Apache::lonnet::current_machine_ids(); $lonhost_in_use = $lonhost; if (@hosts > 1) { @@ -413,14 +608,74 @@ ENDSCRIPT } } } - %defaultdomconf = &Apache::loncommon::get_domainconf($defdom); + $saml_prefix = $defdom.'.login.saml_'; + if ($defaultdomconf{$saml_prefix.$lonhost_in_use}) { + $saml_landing = 1; + $samlssotext = $defaultdomconf{$saml_prefix.'text_'.$lonhost_in_use}; + $samlnonsso = $defaultdomconf{$saml_prefix.'notsso_'.$lonhost_in_use}; + $samlssoimg = $defaultdomconf{$saml_prefix.'img_'.$lonhost_in_use}; + $samlssoalt = $defaultdomconf{$saml_prefix.'alt_'.$lonhost_in_use}; + $samlssourl = $defaultdomconf{$saml_prefix.'url_'.$lonhost_in_use}; + $samltooltip = $defaultdomconf{$saml_prefix.'title_'.$lonhost_in_use}; + } + if ($saml_landing) { + if ($samlssotext eq '') { + $samlssotext = 'SSO Login'; + } + if ($samlnonsso eq '') { + $samlnonsso = 'Non-SSO Login'; + } + $js .= <<"ENDSAMLJS"; + + + +ENDSAMLJS + } + +# --------------------------------------------------- Print login screen header + + my %add_entries = ( + bgcolor => "$mainbg", + text => "$font", + link => "$link", + vlink => "$vlink", + alink => "$alink", + onload => 'javascript:enableInput();',); + + my ($headextra,$headextra_exempt); $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use}; $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use}; if ($headextra) { my $omitextra; if ($headextra_exempt ne '') { my @exempt = split(',',$headextra_exempt); - my $ip = $ENV{'REMOTE_ADDR'}; + my $ip = &Apache::lonnet::get_requestor_ip(); if (grep(/^\Q$ip\E$/,@exempt)) { $omitextra = 1; } @@ -458,6 +713,7 @@ ENDSCRIPT 'helpdesk' => 'Contact Helpdesk', 'forgotpw' => 'Forgot password?', 'newuser' => 'New User?', + 'change' => 'Change?', ); # -------------------------------------------------- Change password field name @@ -519,7 +775,7 @@ ENDSERVERFORM $mobileargs = 'autocapitalize="off" autocorrect="off"'; } my $loginform=(< +

:
@@ -540,8 +796,63 @@ LFORM HEADER } - $r->print(< + + my $stdauthformstyle = 'inline-block'; + my $ssoauthstyle = 'none'; + my $logintype; + $r->print('
'); + if ($saml_landing) { + $ssoauthstyle = 'inline-block'; + $stdauthformstyle = 'none'; + $logintype = $samlssotext; + my $ssologin = '/adm/sso'; + if ($samlssourl ne '') { + $ssologin = $samlssourl; + } + if ($env{'form.firsturl'} ne '') { + my $querystring = 'origurl='; + if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) { + $querystring .= &uri_escape_utf8($env{'form.firsturl'}); + } else { + $querystring .= &uri_escape($env{'form.firsturl'}); + } + $querystring = &HTML::Entities::encode($querystring,"'"); + $ssologin .= (($ssologin=~/\?/)?'&':'?') . $querystring; + } + my $ssohref; + if ($samlssoimg ne '') { + $ssohref = ''.$samlssoalt.''; + } else { + $ssohref = ''.$samlssotext.''; + } + if (($env{'form.saml'} eq 'no') || + (($env{'form.username'} ne '') && ($env{'form.domain'} ne ''))) { + $ssoauthstyle = 'none'; + $stdauthformstyle = 'inline-block'; + $logintype = $samlnonsso; + } + $r->print(< +Log-in type: +$logintype
+$lt{'change'} +

+
+
+$ssohref +$noscript_warning +
+
+$loginhelp +$contactblock +$coursecatalog +
+
+ENDSAML + } + + $r->print(<
$logintitle $loginform @@ -557,8 +868,8 @@ HEADER
-
-ENDTOP +ENDLOGIN + $r->print('
'."\n"); if ($showmainlogo) { $r->print(' '."\n"); } @@ -653,8 +964,8 @@ ENDDOCUMENT } sub check_loginvia { - my ($domain,$lonhost) = @_; - if ($domain eq '' || $lonhost eq '') { + my ($domain,$lonhost,$lonidsdir,$balcookie,$linkprot) = @_; + if ($domain eq '' || $lonhost eq '' || $lonidsdir eq '') { return; } my %domconfhash = &Apache::loncommon::get_domainconf($domain); @@ -663,7 +974,7 @@ sub check_loginvia { my $output; if ($loginvia ne '') { my $noredirect; - my $ip = $ENV{'REMOTE_ADDR'}; + my $ip = &Apache::lonnet::get_requestor_ip(); if ($ip eq '127.0.0.1') { $noredirect = 1; } else { @@ -683,7 +994,37 @@ sub check_loginvia { } if ($newhost ne $lonhost) { if (&Apache::lonnet::hostname($newhost) ne '') { - $output = &redirect_page($newhost,$path); + if ($balcookie) { + my ($balancer,$cookie) = split(/:/,$balcookie); + if ($cookie =~ /^($match_domain)_($match_username)_([a-f0-9]+)$/) { + my ($udom,$uname,$cookieid) = ($1,$2,$3); + unless (&Apache::lonnet::delbalcookie($cookie,$balancer) eq 'ok') { + if ((-d $lonidsdir) && (opendir(my $dh,$lonidsdir))) { + while (my $filename=readdir($dh)) { + if ($filename=~/^(\Q$uname\E_\d+_\Q$udom\E_$match_lonid)\.id$/) { + my $handle = $1; + my %hash = + &Apache::lonnet::get_sessionfile_vars($handle,$lonidsdir, + ['request.balancercookie', + 'user.linkedenv']); + if ($hash{'request.balancercookie'} eq "$balancer:$cookieid") { + if (unlink("$lonidsdir/$filename")) { + if (($hash{'user.linkedenv'} =~ /^[a-f0-9]+_linked$/) && + (-l "$lonidsdir/$hash{'user.linkedenv'}.id") && + (readlink("$lonidsdir/$hash{'user.linkedenv'}.id") eq "$lonidsdir/$filename")) { + unlink("$lonidsdir/$hash{'user.linkedenv'}.id"); + } + } + } + last; + } + } + closedir($dh); + } + } + } + } + $output = &redirect_page($newhost,$path,$linkprot); } } } @@ -692,15 +1033,29 @@ sub check_loginvia { } sub redirect_page { - my ($desthost,$path) = @_; + my ($desthost,$path,$linkprot) = @_; + my $hostname = &Apache::lonnet::hostname($desthost); 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; + my $url = $protocol.'://'.$hostname.$path; if ($env{'form.firsturl'} ne '') { - $url .='?firsturl='.$env{'form.firsturl'}; + my $querystring; + if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) { + $querystring = &uri_escape_utf8($env{'form.firsturl'}); + } else { + $querystring = &uri_escape($env{'form.firsturl'}); + } + $querystring = &HTML::Entities::encode($querystring,"'"); + $url .='?firsturl='.$querystring + } + if ($linkprot) { + my $ltoken = &Apache::lonnet::tmpput({linkprot => $linkprot},$desthost); + if ($ltoken) { + $url .= (($url =~ /\?/) ? '&' : '?').'ltoken='.$ltoken; + } } my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef, {'redirect' => [0,$url],});