--- loncom/auth/lonauth.pm 2008/10/01 11:11:08 1.95 +++ loncom/auth/lonauth.pm 2011/10/10 21:02:55 1.101.8.9 @@ -1,7 +1,7 @@ # The LearningOnline Network # User Authentication Module # -# $Id: lonauth.pm,v 1.95 2008/10/01 11:11:08 bisitz Exp $ +# $Id: lonauth.pm,v 1.101.8.9 2011/10/10 21:02:55 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -40,6 +40,8 @@ use Apache::lonmenu(); use Apache::createaccount; use Fcntl qw(:flock); use Apache::lonlocal; +use Apache::File(); +use HTML::Entities; # ------------------------------------------------------------ Successful login sub success { @@ -73,20 +75,59 @@ sub success { # ------------------------------------------------------------ Get cookie ready $cookie="lonID=$cookie; path=/"; # -------------------------------------------------------- Menu script and info + my $destination = $lowerurl; + + if (defined($form->{role})) { + my $envkey = 'user.role.'.$form->{role}; + my $now=time; + my $then=$env{'user.login.time'}; + my $refresh=$env{'user.refresh.time'}; + if (exists($env{$envkey})) { + my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus); + &Apache::lonnet::role_status($envkey,$then,$refresh,$now,\$role,\$where, + \$trolecode,\$tstatus,\$tstart,\$tend); + if ($tstatus eq 'is') { + $destination .= ($destination =~ /\?/) ? '&' : '?'; + my $newrole = &HTML::Entities::encode($form->{role},'"<>&'); + $destination .= 'selectrole=1&'.$newrole.'=1'; + } + } + } + if (defined($form->{symb})) { + my $destsymb = $form->{symb}; + $destination .= ($destination =~ /\?/) ? '&' : '?'; + if ($destsymb =~ /___/) { + # FIXME Need to deal with encrypted symbs and urls as needed. + my ($map,$resid,$desturl)=split(/___/,$destsymb); + unless ($desturl=~/^(adm|uploaded|editupload|public)/) { + $desturl = &Apache::lonnet::clutter($desturl); + } + $desturl = &HTML::Entities::encode($desturl,'"<>&'); + $destsymb = &HTML::Entities::encode($destsymb,'"<>&'); + $destination .= '&destinationurl='.$desturl. + '&destsymb='.$destsymb; + } else { + $destsymb = &HTML::Entities::encode($destsymb,'"<>&'); + $destination .= '&destinationurl='.$destsymb; + } + } + my $windowinfo=&Apache::lonmenu::open($env{'browser.os'}); - my $startupremote=&Apache::lonmenu::startupremote($lowerurl); + my $startupremote=&Apache::lonmenu::startupremote($destination); my $remoteinfo=&Apache::lonmenu::load_remote_msg($lowerurl); my $setflags=&Apache::lonmenu::setflags(); my $maincall=&Apache::lonmenu::maincall(); + my $brcrum = [{'href' => '', + 'text' => 'Successful Login'},]; my $start_page=&Apache::loncommon::start_page('Successful Login', - $startupremote, - {'no_inline_link' => 1,}); + $startupremote, + {'no_inline_link' => 1, + 'bread_crumbs' => $brcrum,}); my $end_page =&Apache::loncommon::end_page(); my $continuelink; - if (($env{'browser.interface'} eq 'textual') || - ($env{'environment.remote'} eq 'off')) { - $continuelink="".&mt('Continue').""; + if ($env{'environment.remote'} eq 'off') { + $continuelink=''.&mt('Continue').''; } # ------------------------------------------------- Output for successful login @@ -96,16 +137,16 @@ sub success { my %lt=&Apache::lonlocal::texthash( 'wel' => 'Welcome', - 'mes' => 'Welcome to the LearningOnline Network with CAPA. Please wait while your session is being set up.', 'pro' => 'Login problems?', 'log' => 'loginproblems.html', ); + my $welcome = &mt('Welcome to the Learning[_1]Online[_2] Network with CAPA. Please wait while your session is being set up.','',''); $r->print(<$lt{'wel'} -$lt{'mes'}

+$welcome

$lt{'pro'}

$remoteinfo $maincall @@ -120,16 +161,22 @@ sub failed { my ($r,$message,$form) = @_; my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef, {'no_inline_link' => 1,}); + my $retry = '/adm/login?username='.$form->{'uname'}. + '&domain='.$form->{'udom'}; + if (exists($form->{role})) { + $retry .= '&role='.$form->{role}; + } + if (exists($form->{symb})) { + $retry .= '&symb='.$form->{symb}; + } my $end_page = &Apache::loncommon::end_page(); &Apache::loncommon::content_type($r,'text/html'); - sleep 1; # brute force counteraction: slow down attackers, which try to hack user authentication with automated scripts $r->send_http_header; $r->print( $start_page .'

'.&mt('Sorry ...').'

' .'

'.&mt($message).'

' - .'

'.&mt('Please [_1]log in again[_2].' - ,"{'uname'}&domain=$form->{'udom'}\">",'') + .'

'.&mt('Please [_1]log in again[_2].','','') .'

' .'

'.&mt('Login problems?').'

' .$end_page @@ -163,23 +210,33 @@ sub handler { # -------------------------------- 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')."/$handle.id"); + } else { # Indeed, a valid token is found - &Apache::loncommon::content_type($r,'text/html'); - $r->send_http_header; - my $start_page = - &Apache::loncommon::start_page('Already logged in'); - my $end_page = - &Apache::loncommon::end_page(); - $r->print( - $start_page - .'

'.&mt('You are already logged in!').'

' - .'

'.&mt('Please either [_1]continue the current session[_2] or [_3]logout[_4].' - ,'','','','') - .'

' - .'

'.&mt('Login problems?').'

' - .$end_page - ); - return OK; + &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); + &Apache::loncommon::content_type($r,'text/html'); + $r->send_http_header; + 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 @@ -220,7 +277,8 @@ sub handler { my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'}, $form{'serverid'}); - if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) { + if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost') || + ($tmpinfo eq 'no_such_host')) { &failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form); return OK; } else { @@ -232,11 +290,25 @@ sub handler { return OK; } } + if (!&Apache::lonnet::domain($form{'udom'})) { &failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form); return OK; } - my ($key,$firsturl)=split(/&/,$tmpinfo); + + my ($key,$firsturl,$rolestr,$symbstr)=split(/&/,$tmpinfo); + if ($rolestr) { + $rolestr = &unescape($rolestr); + } + if ($symbstr) { + $symbstr= &unescape($symbstr); + } + if ($rolestr =~ /^role=/) { + (undef,$form{'role'}) = split('=',$rolestr); + } + if ($symbstr =~ /^symb=/) { + (undef,$form{'symb'}) = split('=',$symbstr); + } my $keybin=pack("H16",$key); @@ -260,24 +332,20 @@ sub handler { } # ---------------------------------------------------------------- Authenticate - my @cancreate; + my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'}); - if (ref($domconfig{'usercreation'}) eq 'HASH') { - if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') { - if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') { - @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}}; - } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') && - ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) { - @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}); - } - } - } + my ($cancreate,$statustocreate) = + &Apache::createaccount::get_creation_controls($form{'udom'},$domconfig{'usercreation'}); my $defaultauth; - if (grep(/^login$/,@cancreate)) { - $defaultauth = 1; + if (ref($cancreate) eq 'ARRAY') { + if (grep(/^login$/,@{$cancreate})) { + $defaultauth = 1; + } } + my $clientcancheckhost = 1; my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass, - $form{'udom'},$defaultauth); + $form{'udom'},$defaultauth, + $clientcancheckhost); # --------------------------------------------------------------------- Failed? @@ -286,22 +354,25 @@ sub handler { \%form); return OK; } elsif ($authhost eq 'no_account_on_host') { - my %domconfig = - &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'}); - if (grep(/^login$/,@cancreate)) { + if ($defaultauth) { + my $domdesc = &Apache::lonnet::domain($form{'udom'},'description'); + unless (&check_can_host($r,\%form,'no_account_on_host',$domdesc)) { + return OK; + } my $start_page = &Apache::loncommon::start_page('Create a user account in LON-CAPA', '',{'no_inline_link' => 1,}); - my $domdesc = &Apache::lonnet::domain($form{'udom'},'description'); my $lonhost = $r->dir_config('lonHostID'); my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'}; my $contacts = &Apache::loncommon::build_recipient_list(undef,'helpdeskmail', $form{'udom'},$origmail); my ($contact_email) = split(',',$contacts); - my $output = &Apache::createaccount::username_check($form{'uname'}, - $form{'udom'},$domdesc,'', - $lonhost,$contact_email,$contact_name); + my $output = + &Apache::createaccount::username_check($form{'uname'},$form{'udom'}, + $domdesc,'',$lonhost, + $contact_email,$contact_name, + undef,$statustocreate); &Apache::loncommon::content_type($r,'text/html'); $r->send_http_header; &Apache::createaccount::print_header($r,$start_page); @@ -343,14 +414,133 @@ sub handler { } if ($r->dir_config("lonBalancer") eq 'yes') { - &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef, - \%form); - $r->internal_redirect('/adm/switchserver'); + my $otherserver = &Apache::lonnet::spareserver(30000,undef,1,$form{'udom'}); + if (!$otherserver) { + ($otherserver) = &Apache::lonnet::choose_server($form{'udom'}); + } + if ($otherserver) { + &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef, + \%form); + $r->internal_redirect('/adm/switchserver?otherserver='.$otherserver.'&origurl='.$firsturl); + } else { + $r->print(&noswitch()); + } + return OK; } else { - &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef, - \%form); + if (!&check_can_host($r,\%form,$authhost)) { + my ($otherserver) = &Apache::lonnet::choose_server($form{'udom'}); + if ($otherserver) { + &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef, + \%form); + $r->internal_redirect('/adm/switchserver?otherserver='.$otherserver.'&origurl='.$firsturl); + } else { + $r->print(&noswitch()); + } + return OK; + } +# ------------------------------------------------------- Do the load balancing + +# ---------------------------------------------------------- Determine own load + my $loadlim = $r->dir_config('lonLoadLim'); + my $loadavg; + { + my $loadfile=Apache::File->new('/proc/loadavg'); + $loadavg=<$loadfile>; + } + $loadavg =~ s/\s.*//g; + my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim); + my $userloadpercent=&Apache::lonnet::userload(); + +# ---------------------------------------------------------- Are we overloaded? + if ((($userloadpercent>100.0)||($loadpercent>100.0))) { + my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent,1,$form{'udom'}); + if (!$unloaded) { + ($unloaded) = &Apache::lonnet::choose_server($form{'udom'}); + } + if ($unloaded) { + &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect', + undef,\%form); + $r->internal_redirect('/adm/switchserver?otherserver='.$unloaded.'&origurl='.$firsturl); + return OK; + } + } + &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef, + \%form); + return OK; + } +} + +sub check_can_host { + my ($r,$form,$authhost,$domdesc) = @_; + return unless (ref($form) eq 'HASH'); + my $canhost = 1; + my $lonhost = $r->dir_config('lonHostID'); + my $udom = $form->{'udom'}; + my @intdoms; + my $internet_names = &Apache::lonnet::get_internet_names($lonhost); + if (ref($internet_names) eq 'ARRAY') { + @intdoms = @{$internet_names}; + } + my $uprimary_id = &Apache::lonnet::domain($udom,'primary'); + my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id); + unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) { + my $machine_dom = &Apache::lonnet::host_domain($lonhost); + my $hostname = &Apache::lonnet::hostname($lonhost); + my $serverhomeID = &Apache::lonnet::get_server_homeID($hostname); + my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID); + my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom); + my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom); + my $loncaparev; + if ($authhost eq 'no_account_on_host') { + $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom); + } else { + $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom,$lonhost); + } + $canhost = &Apache::lonnet::can_host_session($udom,$lonhost,$loncaparev, + $udomdefaults{'remotesessions'}, + $defdomdefaults{'hostedsessions'}); + } + unless ($canhost) { + if ($authhost eq 'no_account_on_host') { + my $checkloginvia = 1; + my ($login_host,$hostname) = + &Apache::lonnet::choose_server($udom,$checkloginvia); + &Apache::loncommon::content_type($r,'text/html'); + $r->send_http_header; + if ($login_host ne '') { + my $protocol = $Apache::lonnet::protocol{$login_host}; + $protocol = 'http' if ($protocol ne 'https'); + my $newurl = $protocol.'://'.$hostname.'/adm/createaccount'; + $r->print(&Apache::loncommon::start_page('Create a user account in LON-CAPA'). + '

'.&mt('Account creation').'

'. + &mt('You do not currently have a LON-CAPA account at this institution.').'
'. + '

'.&mt('You will be able to create one by logging into a LON-CAPA server within the [_1] domain.',$domdesc).'

'. + '

'.&mt('[_1]Log in[_2]','',''). + &Apache::loncommon::end_page()); + } else { + $r->print(&Apache::loncommon::start_page('Access to LON-CAPA unavailable'). + '

'.&mt('Account creation unavailable').'

'. + &mt('You do not currently have a LON-CAPA account at this institution.').'
'. + '

'.&mt('Currently a LON-CAPA server is not available within the [_1] domain for you to log-in to, to create an account.',$domdesc).'

'. + &Apache::loncommon::end_page()); + } + } else { + &success($r,$form->{'uname'},$udom,$authhost,'noredirect',undef, + $form); + my ($otherserver) = &Apache::lonnet::choose_server($udom); + $r->internal_redirect('/adm/switchserver?otherserver='.$otherserver); + } } - return OK; + return $canhost; +} + +sub noswitch { + my $result = &Apache::loncommon::start_page('Access to LON-CAPA unavailable'). + '

'.&mt('Session unavailable').'

'. + &mt('This LON-CAPA server is unable to host your session.').'
'. + '

'.&mt('Currently no other LON-CAPA server is available to host your session either.').'

'. + &Apache::loncommon::end_page(); + return $result; } 1;