[BACK]Return to lonauth.pm CVS log [TXT] [DIR] Up to [LON-CAPA] / loncom / auth

Diff for /loncom/auth/lonauth.pm between versions 1.82.2.1 and 1.101.8.9

version 1.82.2.1, 2006/10/06 14:29:44 version 1.101.8.9, 2011/10/10 21:02:55
Line 32  use strict; Line 32  use strict;
 use LONCAPA;  use LONCAPA;
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
 use CGI qw(:standard);  use CGI qw(:standard);
 use CGI::Cookie();  
 use DynaLoader; # for Crypt::DES version  use DynaLoader; # for Crypt::DES version
 use Crypt::DES;  use Crypt::DES;
 use Apache::loncommon();  use Apache::loncommon();
 use Apache::lonnet;  use Apache::lonnet;
 use Apache::lonmenu();  use Apache::lonmenu();
   use Apache::createaccount;
 use Fcntl qw(:flock);  use Fcntl qw(:flock);
 use Apache::lonlocal;  use Apache::lonlocal;
   use Apache::File();
 my %FORM;  use HTML::Entities;
    
 # ------------------------------------------------------------ Successful login  # ------------------------------------------------------------ Successful login
   
 sub success {  sub success {
     my ($r, $username, $domain, $authhost, $lowerurl, $extra_env) = @_;      my ($r, $username, $domain, $authhost, $lowerurl, $extra_env,
     my $lonids=$r->dir_config('lonIDsDir');   $form) = @_;
   
     my $public=($username eq 'public' && $domain eq 'public');  
   
 # See if old ID present, if so, remove  
   
     my ($filename,$cookie,$userroles);  
     my $now=time;  
   
     if ($public) {  
  my $max_public=100;  
  my $oldest;  
  my $oldest_time=0;  
  for(my $next=1;$next<=$max_public;$next++) {  
     if (-e $lonids."/publicuser_$next.id") {  
  my $mtime=(stat($lonids."/publicuser_$next.id"))[9];  
  if ($mtime<$oldest_time || !$oldest_time) {  
     $oldest_time=$mtime;  
     $oldest=$next;  
  }  
     } else {  
  $cookie="publicuser_$next";  
  last;  
     }  
  }  
  if (!$cookie) { $cookie="publicuser_$oldest"; }  
     } else {  
  opendir(DIR,$lonids);  
  while ($filename=readdir(DIR)) {  
     if ($filename=~/^$username\_\d+\_$domain\_$authhost\.id$/) {  
  unlink($lonids.'/'.$filename);  
     }  
  }  
  closedir(DIR);  
   
 # Give them a new cookie  
   
  $cookie="$username\_$now\_$domain\_$authhost";  
       
 # Initialize roles  
   
  $userroles=&Apache::lonnet::rolesinit($domain,$username,$authhost);  
     }  
 # ------------------------------------ Check browser type and MathML capability  
   
     my ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,  
         $clientunicode,$clientos) = &Apache::loncommon::decode_user_agent($r);  
   
 # -------------------------------------- Any accessibility options to remember?  
     if (($FORM{'interface'}) && ($FORM{'remember'} eq 'true')) {  
  foreach ('imagesuppress','appletsuppress',  
  'embedsuppress','fontenhance','blackwhite') {  
     if ($FORM{$_} eq 'true') {  
  &Apache::lonnet::put('environment',{$_ => 'on'},  
      $domain,$username);  
     } else {  
  &Apache::lonnet::del('environment',[$_],$domain,$username);  
     }  
  }  
     }  
 # ------------------------------------------------------------- Get environment  
   
     my %userenv=Apache::lonnet::dump('environment',$domain,$username);  # ------------------------------------------------------------ Get cookie ready
     my ($tmp) = keys(%userenv);      my $cookie =
     if ($tmp !~ /^(con_lost|error|no_such_host)/i) {   &Apache::loncommon::init_user_environment($r, $username, $domain,
  # default remote control to off    $authhost, $form,
  if ($userenv{'remote'} ne 'on') { $userenv{'remote'} = 'off'; }    {'extra_env' => $extra_env,});
     } else {  
  undef(%userenv);  
     }  
     if (($userenv{'interface'}) && (!$FORM{'interface'})) {  
  $FORM{'interface'}=$userenv{'interface'};  
     }  
     $env{'environment.remote'}=$userenv{'remote'};  
     if ($userenv{'texengine'} eq 'ttm') { $clientmathml=1; }  
   
 # --------------- Do not trust query string to be put directly into environment      my $public=($username eq 'public' && $domain eq 'public');
     foreach ('imagesuppress','appletsuppress',  
      'embedsuppress','fontenhance','blackwhite',  
      'interface','localpath','localres') {  
  $FORM{$_}=~s/[\n\r\=]//gs;  
     }  
 # --------------------------------------------------------- Write first profile  
   
     {  
  my %initial_env =   
     ("user.name"          => $username,  
      "user.domain"        => $domain,  
      "user.home"          => $authhost,  
      "browser.type"       => $clientbrowser,  
      "browser.version"    => $clientversion,  
      "browser.mathml"     => $clientmathml,  
      "browser.unicode"    => $clientunicode,  
      "browser.os"         => $clientos,  
      "server.domain"      => $r->dir_config('lonDefDomain'),  
      "request.course.fn"  => '',  
      "request.course.uri" => '',  
      "request.course.sec" => '',  
      "request.role"       => 'cm',  
      "request.role.adv"   => $env{'user.adv'},  
      "request.host"       => $ENV{'REMOTE_ADDR'},);  
   
         if ($FORM{'localpath'}) {  
     $initial_env{"browser.localpath"}  = $FORM{'localpath'};  
     $initial_env{"browser.localres"}   = $FORM{'localres'};  
         }  
   
  if ($public) {  
     $initial_env{"environment.remote"} = "off";  
  }  
  if ($FORM{'interface'}) {  
     $FORM{'interface'}=~s/\W//gs;  
     $initial_env{"browser.interface"} = $FORM{'interface'};  
     $env{'browser.interface'}=$FORM{'interface'};  
     foreach my $option ('imagesuppress','appletsuppress',  
  'embedsuppress','fontenhance','blackwhite') {  
  if (($FORM{$option} eq 'true') ||  
     ($userenv{$option} eq 'on')) {  
     $initial_env{"browser.$option"} = "on";  
  }  
     }  
  }  
   
  $env{'user.environment'} = "$lonids/$cookie.id";      if ($public or $lowerurl eq 'noredirect') { return $cookie; }
  open(my $idf,">$lonids/$cookie.id");  
  unless (flock($idf,LOCK_EX)) {  
     &Apache::lonnet::logthis("<font color=blue>WARNING: ".  
    'Could not obtain exclusive lock in lonauth: '.$!);  
     close($idf);  
     return 'error: '.$!;  
  }  
   
  &add_to_env($idf,\%initial_env);  
  &add_to_env($idf,\%userenv,'environment.');  
  &add_to_env($idf,$userroles);  
  &add_to_env($idf,$extra_env);  
  close($idf);  
     }  
     $env{'request.role'}='cm';  
     $env{'request.role.adv'}=$env{'user.adv'};  
     $env{'browser.type'}=$clientbrowser;  
 # -------------------------------------------------------------------- Log this  # -------------------------------------------------------------------- Log this
   
     &Apache::lonnet::log($domain,$username,$authhost,      &Apache::lonnet::log($domain,$username,$authhost,
Line 203  sub success { Line 73  sub success {
     }      }
   
 # ------------------------------------------------------------ Get cookie ready  # ------------------------------------------------------------ Get cookie ready
   
     if ($public or $lowerurl eq 'noredirect') { return $cookie; }  
   
     $cookie="lonID=$cookie; path=/";      $cookie="lonID=$cookie; path=/";
 # -------------------------------------------------------- Menu script and info  # -------------------------------------------------------- Menu script and info
     my $windowinfo=&Apache::lonmenu::open($clientos);      my $destination = $lowerurl;
     my $startupremote=&Apache::lonmenu::startupremote($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 $startupremote=&Apache::lonmenu::startupremote($destination);
     my $remoteinfo=&Apache::lonmenu::load_remote_msg($lowerurl);      my $remoteinfo=&Apache::lonmenu::load_remote_msg($lowerurl);
     my $setflags=&Apache::lonmenu::setflags();      my $setflags=&Apache::lonmenu::setflags();
     my $maincall=&Apache::lonmenu::maincall();      my $maincall=&Apache::lonmenu::maincall();
       my $brcrum = [{'href' => '',
                      'text' => 'Successful Login'},];
     my $start_page=&Apache::loncommon::start_page('Successful Login',      my $start_page=&Apache::loncommon::start_page('Successful Login',
   $startupremote,                                                    $startupremote,
   {'no_inline_link' => 1,});                                                    {'no_inline_link' => 1,
                                                      'bread_crumbs' => $brcrum,});
     my $end_page  =&Apache::loncommon::end_page();      my $end_page  =&Apache::loncommon::end_page();
   
     my $continuelink;      my $continuelink;
     if (($env{'browser.interface'} eq 'textual') ||      if ($env{'environment.remote'} eq 'off') {
         ($env{'environment.remote'} eq 'off')) {   $continuelink='<a href="'.$destination.'">'.&mt('Continue').'</a>';
  $continuelink="<a href=\"$lowerurl\">".&mt('Continue')."</a>";  
     }      }
 # ------------------------------------------------- Output for successful login  # ------------------------------------------------- Output for successful login
   
Line 231  sub success { Line 137  sub success {
   
     my %lt=&Apache::lonlocal::texthash(      my %lt=&Apache::lonlocal::texthash(
        'wel' => 'Welcome',         'wel' => 'Welcome',
        'mes' => 'Welcome to the Learning<i>Online</i> Network with CAPA. Please wait while your session is being set up',         'pro' => 'Login problems?',
        'pro' => 'Problems',  
        'log' => 'loginproblems.html',         '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.','<i>','</i>');
     $r->print(<<ENDSUCCESS);      $r->print(<<ENDSUCCESS);
 $start_page  $start_page
 $setflags  $setflags
 $windowinfo  $windowinfo
 <h1>$lt{'wel'}</h1>  <h1>$lt{'wel'}</h1>
 $lt{'mes'}.<p>  $welcome<p>
 <a href="/adm/$lt{'log'}">$lt{'pro'}?</a></p>  <a href="/adm/$lt{'log'}">$lt{'pro'}</a></p>
 $remoteinfo  $remoteinfo
 $maincall  $maincall
 $continuelink  $continuelink
Line 249  $end_page Line 155  $end_page
 ENDSUCCESS  ENDSUCCESS
 }  }
   
 sub add_to_env {  
     my ($idf,$env_data,$prefix) = @_;  
     while (my ($key,$value) = each(%$env_data)) {  
  print $idf (&escape($prefix.$key).'='.&escape($value)."\n");  
  $env{$prefix.$key} = $value;  
     }  
 }  
   
 # --------------------------------------------------------------- Failed login!  # --------------------------------------------------------------- Failed login!
   
 sub failed {  sub failed {
     my ($r,$message) = @_;      my ($r,$message,$form) = @_;
     my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,      my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,
     {'no_inline_link' => 1,});      {'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();      my $end_page   = &Apache::loncommon::end_page();
   
     my %lt=('sorry'  => &mt('Sorry ...'),  
     'please' =>   
     &mt('Please [_1]log in again[_2].',  
  "<a href=\"/adm/login?username=$FORM{'uname'}&domain=$FORM{'udom'}\">",  
  '</a>'),  
     'problemspage' => &mt('loginproblems.html'),  
     'problems'     => 'Problems',  
     );  
     &Apache::loncommon::content_type($r,'text/html');      &Apache::loncommon::content_type($r,'text/html');
     $r->send_http_header;      $r->send_http_header;
       $r->print(
     $r->print(<<ENDFAILED);         $start_page
 $start_page        .'<h1>'.&mt('Sorry ...').'</h1>'
 <h1>$lt{'sorry'}</h1>        .'<p class="LC_warning">'.&mt($message).'</p>'
 <p><b>$message</b></p>        .'<p>'.&mt('Please [_1]log in again[_2].','<a href="'.$retry.'">','</a>')
 <p>$lt{'please'}</p>        .'</p>'
 <p>        .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
 <a href="/adm/$lt{'problemspage'}">$lt{'problems'}</a></p>        .$end_page
 $end_page      );
 ENDFAILED   }
 }  
   
 # ------------------------------------------------------------------ Rerouting!  # ------------------------------------------------------------------ Rerouting!
   
Line 293  sub reroute { Line 189  sub reroute {
     my ($r) = @_;      my ($r) = @_;
     &Apache::loncommon::content_type($r,'text/html');      &Apache::loncommon::content_type($r,'text/html');
     $r->send_http_header;      $r->send_http_header;
     my $msg='<h1>Sorry ...</h1>      my $msg='<h1>'.&mt('Sorry ...').'</h1>'
              Please <a href="/">log in again</a>.';             .&mt('Please [_1]log in again[_2].');
     &Apache::loncommon::simple_error_page($r,'Rerouting',$msg);      &Apache::loncommon::simple_error_page($r,'Rerouting',$msg);
 }  }
   
Line 302  sub reroute { Line 198  sub reroute {
   
 sub handler {  sub handler {
     my $r = shift;      my $r = shift;
       my $form;
 # Are we re-routing?  # Are we re-routing?
     if (-e '/home/httpd/html/lon-status/reroute.txt') {      if (-e '/home/httpd/html/lon-status/reroute.txt') {
  &reroute($r);   &reroute($r);
Line 312  sub handler { Line 208  sub handler {
     &Apache::lonlocal::get_language_handle($r);      &Apache::lonlocal::get_language_handle($r);
   
 # -------------------------------- Prevent users from attempting to login twice  # -------------------------------- Prevent users from attempting to login twice
     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 $cookie;  
     if ($lonid) {  
  my $handle=$lonid->value;  
         $handle=~s/\W//g;  
         my $lonidsdir=$r->dir_config('lonIDsDir');          my $lonidsdir=$r->dir_config('lonIDsDir');
         if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {          if ($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  # Indeed, a valid token is found
     &Apache::loncommon::content_type($r,'text/html');              &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
     $r->send_http_header;              &Apache::loncommon::content_type($r,'text/html');
     my $start_page =               $r->send_http_header;
  &Apache::loncommon::start_page('Already logged in');              my $start_page =
     my $end_page =                   &Apache::loncommon::start_page('Already logged in');
  &Apache::loncommon::end_page();              my $end_page =
     $r->print(<<ENDFAILED);                  &Apache::loncommon::end_page();
 $start_page              my $dest = '/adm/roles';
 <h1>You are already logged in</h1>              if ($env{'form.firsturl'} ne '') {
 <p>Please either <a href="/adm/roles">continue the current session</a> or                  $dest = $env{'form.firsturl'};
 <a href="/adm/logout">logout</a>.</p>              }
 <p>              $r->print(
 <a href="/adm/loginproblems.html">Problems?</a></p>                 $start_page
 $end_page                .'<h1>'.&mt('You are already logged in!').'</h1>'
 ENDFAILED                .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].'
            return OK;                      ,'<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>')
  }                .'</p>'
                 .$end_page
               );
               return OK;
           }
     }      }
   
 # ---------------------------------------------------- No valid token, continue  # ---------------------------------------------------- No valid token, continue
Line 347  ENDFAILED Line 246  ENDFAILED
     if ($r->header_in('Content-length') > 0) {      if ($r->header_in('Content-length') > 0) {
  $r->read($buffer,$r->header_in('Content-length'),0);   $r->read($buffer,$r->header_in('Content-length'),0);
     }      }
     my @pairs=split(/&/,$buffer);      my %form;
     my $pair; my $name; my $value;      foreach my $pair (split(/&/,$buffer)) {
     undef %FORM;         my ($name,$value) = split(/=/,$pair);
     %FORM=();  
     foreach $pair (@pairs) {  
        ($name,$value) = split(/=/,$pair);  
        $value =~ tr/+/ /;         $value =~ tr/+/ /;
        $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;         $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
        $FORM{$name}=$value;         $form{$name}=$value;
     }       } 
   
     if ((!$FORM{'uname'}) || (!$FORM{'upass0'}) || (!$FORM{'udom'})) {      if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) {
  failed($r,'Username, password and domain need to be specified.');   &failed($r,'Username, password and domain need to be specified.',
    \%form);
         return OK;          return OK;
     }      }
   
 # split user logging in and "su"-user  # split user logging in and "su"-user
   
     ($FORM{'uname'},$FORM{'suname'})=split(/\:/,$FORM{'uname'});      ($form{'uname'},$form{'suname'})=split(/\:/,$form{'uname'});
     $FORM{'uname'} =~ s/\W//g;      $form{'uname'} = &LONCAPA::clean_username($form{'uname'});
     $FORM{'suname'} =~ s/\W//g;      $form{'suname'}= &LONCAPA::clean_username($form{'suname'});
     $FORM{'udom'}  =~ s/\W//g;      $form{'udom'}  = &LONCAPA::clean_domain(  $form{'udom'});
   
     my $role   = $r->dir_config('lonRole');      my $role   = $r->dir_config('lonRole');
     my $domain = $r->dir_config('lonDefDomain');      my $domain = $r->dir_config('lonDefDomain');
     my $prodir = $r->dir_config('lonUsersDir');      my $prodir = $r->dir_config('lonUsersDir');
       my $contact_name = &mt('LON-CAPA helpdesk');
   
 # ---------------------------------------- Get the information from login token  # ---------------------------------------- Get the information from login token
   
     my $tmpinfo=Apache::lonnet::reply('tmpget:'.$FORM{'logtoken'},      my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
                                       $FORM{'serverid'});                                        $form{'serverid'});
   
     if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {      if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost') ||
  failed($r,'Information needed to verify your login information is missing, inaccessible or expired.');         ($tmpinfo eq 'no_such_host')) {
    &failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form);
         return OK;          return OK;
     } else {      } else {
  my $reply = &Apache::lonnet::reply('tmpdel:'.$FORM{'logtoken'},   my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'},
    $FORM{'serverid'});     $form{'serverid'});
         if ( $reply ne 'ok' ) {          if ( $reply ne 'ok' ) {
             &failed($r,'Session could not be opened.');              &failed($r,'Session could not be opened.',\%form);
     &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $FORM{'serverid'}." to get login token");      &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $form{'serverid'}." to get login token");
     return OK;      return OK;
  }   }
     }      }
     my ($key,$firsturl)=split(/&/,$tmpinfo);  
       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,$rolestr,$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);      my $keybin=pack("H16",$key);
   
Line 405  ENDFAILED Line 322  ENDFAILED
     my $upass='';      my $upass='';
     for (my $i=0;$i<=2;$i++) {      for (my $i=0;$i<=2;$i++) {
  my $chunk=   my $chunk=
     $cipher->decrypt(unpack("a8",pack("H16",substr($FORM{'upass'.$i},0,16))));      $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},0,16))));
   
  $chunk.=   $chunk.=
     $cipher->decrypt(unpack("a8",pack("H16",substr($FORM{'upass'.$i},16,16))));      $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},16,16))));
   
  $chunk=substr($chunk,1,ord(substr($chunk,0,1)));   $chunk=substr($chunk,1,ord(substr($chunk,0,1)));
  $upass.=$chunk;   $upass.=$chunk;
     }      }
   
 # ---------------------------------------------------------------- Authenticate  # ---------------------------------------------------------------- Authenticate
     my $authhost=Apache::lonnet::authenticate($FORM{'uname'},  
                                               $upass,      my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
                                               $FORM{'udom'});      my ($cancreate,$statustocreate) =
           &Apache::createaccount::get_creation_controls($form{'udom'},$domconfig{'usercreation'});
       my $defaultauth;
       if (ref($cancreate) eq 'ARRAY') {
           if (grep(/^login$/,@{$cancreate})) {
               $defaultauth = 1;
           }
       }
       my $clientcancheckhost = 1;
       my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass,
                                                 $form{'udom'},$defaultauth,
                                                 $clientcancheckhost);
           
 # --------------------------------------------------------------------- Failed?  # --------------------------------------------------------------------- Failed?
   
     if ($authhost eq 'no_host') {      if ($authhost eq 'no_host') {
  failed($r,'Username and/or password could not be authenticated.');   &failed($r,'Username and/or password could not be authenticated.',
    \%form);
         return OK;          return OK;
       } elsif ($authhost eq 'no_account_on_host') {
           if ($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 $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,
                                                          undef,$statustocreate);
               &Apache::loncommon::content_type($r,'text/html');
               $r->send_http_header;
               &Apache::createaccount::print_header($r,$start_page);
               $r->print('<h3>'.&mt('Account creation').'</h3>'.
                         &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'<br />'.
                         $output.&Apache::loncommon::end_page());
               return OK;
           } else {
               &failed($r,'Although your username and password were authenticated, you do not currently have a LON-CAPA account in this domain, and you are not permitted to create one.',\%form);
               return OK;
           }
     }      }
   
     if (($firsturl eq '') ||       if (($firsturl eq '') || 
Line 431  ENDFAILED Line 391  ENDFAILED
  $firsturl='/adm/roles';   $firsturl='/adm/roles';
     }      }
 # --------------------------------- Are we attempting to login as somebody else?  # --------------------------------- Are we attempting to login as somebody else?
     if ($FORM{'suname'}) {      if ($form{'suname'}) {
 # ------------ see if the original user has enough privileges to pull this stunt  # ------------ see if the original user has enough privileges to pull this stunt
  if (&Apache::lonnet::privileged($FORM{'uname'},$FORM{'udom'})) {   if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'})) {
 # ---------------------------------------------------- see if the su-user exists  # ---------------------------------------------------- see if the su-user exists
     unless (&Apache::lonnet::homeserver($FORM{'suname'},$FORM{'udom'})      unless (&Apache::lonnet::homeserver($form{'suname'},$form{'udom'})
  eq 'no_host') {   eq 'no_host') {
  &Apache::lonnet::logthis(&Apache::lonnet::homeserver($FORM{'suname'},$FORM{'udom'}));   &Apache::lonnet::logthis(&Apache::lonnet::homeserver($form{'suname'},$form{'udom'}));
 # ------------------------------ see if the su-user is not too highly privileged  # ------------------------------ see if the su-user is not too highly privileged
  unless (&Apache::lonnet::privileged($FORM{'suname'},$FORM{'udom'})) {   unless (&Apache::lonnet::privileged($form{'suname'},$form{'udom'})) {
 # -------------------------------------------------------- actually switch users  # -------------------------------------------------------- actually switch users
     &Apache::lonnet::logperm('User '.$FORM{'uname'}.' at '.$FORM{'udom'}.      &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.$form{'udom'}.
  ' logging in as '.$FORM{'suname'});   ' logging in as '.$form{'suname'});
     $FORM{'uname'}=$FORM{'suname'};      $form{'uname'}=$form{'suname'};
  } else {   } else {
     &Apache::lonnet::logthis('Attempted switch user to privileged user');      &Apache::lonnet::logthis('Attempted switch user to privileged user');
  }   }
Line 452  ENDFAILED Line 412  ENDFAILED
     &Apache::lonnet::logthis('Non-privileged user attempting switch user');      &Apache::lonnet::logthis('Non-privileged user attempting switch user');
  }   }
     }      }
   
     if ($r->dir_config("lonBalancer") eq 'yes') {      if ($r->dir_config("lonBalancer") eq 'yes') {
  &success($r,$FORM{'uname'},$FORM{'udom'},$authhost,'noredirect');          my $otherserver = &Apache::lonnet::spareserver(30000,undef,1,$form{'udom'});
  $r->internal_redirect('/adm/switchserver');          if (!$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 {
               $r->print(&noswitch());
           }
           return OK;
     } else {      } else {
  &success($r,$FORM{'uname'},$FORM{'udom'},$authhost,$firsturl);          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';
                   $r->print(&Apache::loncommon::start_page('Create a user account in LON-CAPA').
                             '<h3>'.&mt('Account creation').'</h3>'.
                             &mt('You do not currently have a LON-CAPA account at this institution.').'<br />'.
                             '<p>'.&mt('You will be able to create one by logging into a LON-CAPA server within the [_1] domain.',$domdesc).'</p>'.
                             '<p>'.&mt('[_1]Log in[_2]','<a href="'.$newurl.'">','</a>').
                             &Apache::loncommon::end_page());
               } else {
                   $r->print(&Apache::loncommon::start_page('Access to LON-CAPA unavailable').
                             '<h3>'.&mt('Account creation unavailable').'</h3>'.
                             &mt('You do not currently have a LON-CAPA account at this institution.').'<br />'.
                             '<p>'.&mt('Currently a LON-CAPA server is not available within the [_1] domain for you to log-in to, to create an account.',$domdesc).'</p>'.
                             &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').
                    '<h3>'.&mt('Session unavailable').'</h3>'.
                    &mt('This LON-CAPA server is unable to host your session.').'<br />'.
                    '<p>'.&mt('Currently no other LON-CAPA server is available to host your session either.').'</p>'.
                    &Apache::loncommon::end_page();
       return $result;
 }  }
   
 1;  1;
Removed from v.1.82.2.1  
changed lines
  Added in v.1.101.8.9

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