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Diff for /loncom/auth/lonauth.pm between versions 1.45 and 1.84

version 1.45, 2003/03/10 20:21:45 version 1.84, 2006/10/06 14:28:45
Line 25 Line 25
 #  #
 # http://www.lon-capa.org/  # http://www.lon-capa.org/
 #  #
 # 5/21/99,5/22,5/25,5/26,5/27,5/29,6/2,6/11,6/14,6/15  
 # 16/11,12/16,  
 # 1/14,2/24,2/28,2/29,3/7,5/29,5/30,5/31,6/1,6/5,6/29,  
 # 7/1,7/10,10/2,10/5,10/9,10/26,10/30,11/10,  
 # 05/28,05/29 Gerd Kortemeyer  
 # 07/28,08/03 Gerd Kortemeyer  
 # 8/20 Gerd Kortemeyer  
   
 package Apache::lonauth;  package Apache::lonauth;
   
 use strict;  use strict;
   use LONCAPA;
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
 use Apache::File;  
 use CGI qw(:standard);  use CGI qw(:standard);
 use CGI::Cookie();  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 Fcntl qw(:flock);  use Fcntl qw(:flock);
   use Apache::lonlocal;
   use GDBM_File;
 my %FORM;  my %FORM;
   
 # ------------------------------------------------------------ Successful login  # ------------------------------------------------------------ Successful login
   
 sub success {  sub success {
     my ($r, $username, $domain, $authhost,$lowerurl) = @_;      my ($r, $username, $domain, $authhost, $lowerurl, $extra_env) = @_;
     my $lonids=$r->dir_config('lonIDsDir');      my $lonids=$r->dir_config('lonIDsDir');
   
       my $public=($username eq 'public' && $domain eq 'public');
   
 # See if old ID present, if so, remove  # See if old ID present, if so, remove
   
     my $filename;      my ($filename,$cookie,$userroles);
     opendir(DIR,$lonids);      my $now=time;
     while ($filename=readdir(DIR)) {  
        if ($filename=~/^$username\_\d+\_$domain\_$authhost\.id$/) {  
   unlink($lonids.'/'.$filename);  
        }  
     }  
     closedir(DIR);  
   
 # Give them a new cookie      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);
   
     my $cookie;  # Give them a new cookie
     my $now=time;  
     $cookie="$username\_$now\_$domain\_$authhost";  
   
    $cookie="$username\_$now\_$domain\_$authhost";
       
 # Initialize roles  # Initialize roles
   
     my $userroles=Apache::lonnet::rolesinit($domain,$username,$authhost);   $userroles=&Apache::lonnet::rolesinit($domain,$username,$authhost);
       }
 # ------------------------------------ Check browser type and MathML capability  # ------------------------------------ Check browser type and MathML capability
   
     my ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,      my ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
Line 95  sub success { Line 109  sub success {
     }      }
 # ------------------------------------------------------------- Get environment  # ------------------------------------------------------------- Get environment
   
     my $userenv;  
     my %userenv=Apache::lonnet::dump('environment',$domain,$username);      my %userenv=Apache::lonnet::dump('environment',$domain,$username);
     my ($tmp) = keys(%userenv);      my ($tmp) = keys(%userenv);
     if ($tmp !~ /^(con_lost|error|no_such_host)/i) {      if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
  foreach my $key (keys(%userenv)) {   # default remote control to off
     $userenv.="environment.$key=$userenv{$key}\n";   if ($userenv{'remote'} ne 'on') { $userenv{'remote'} = 'off'; }
  }      } else {
    undef(%userenv);
     }      }
     if (($userenv{'interface'}) && (!$FORM{'interface'})) {      if (($userenv{'interface'}) && (!$FORM{'interface'})) {
  $FORM{'interface'}=$userenv{'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
       foreach ('imagesuppress','appletsuppress',
        'embedsuppress','fontenhance','blackwhite',
        'interface','localpath','localres') {
    $FORM{$_}=~s/[\n\r\=]//gs;
       }
 # --------------------------------------------------------- Write first profile  # --------------------------------------------------------- Write first profile
   
     {      {
  my $idf=Apache::File->new(">$lonids/$cookie.id");   my %initial_env = 
  unless (flock($idf,LOCK_EX)) {      ("user.name"          => $username,
     &Apache::lonnet::logthis("<font color=blue>WARNING: ".       "user.domain"        => $domain,
    'Could not obtain exclusive lock in lonauth: '.$!);       "user.home"          => $authhost,
     $idf->close();       "browser.type"       => $clientbrowser,
     return 'error: '.$!;       "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) {
       $initial_env{"environment.remote"} = "off";
  }   }
  if ($userenv ne '') { print $idf "$userenv\n"; }  
  print $idf "user.name=$username\n";  
  print $idf "user.domain=$domain\n";  
  print $idf "user.home=$authhost\n";  
  print $idf "browser.type=$clientbrowser\n";  
  print $idf "browser.version=$clientversion\n";  
  print $idf "browser.mathml=$clientmathml\n";  
  print $idf "browser.unicode=$clientunicode\n";  
  print $idf "browser.os=$clientos\n";  
  print $idf "request.course.fn=\n";  
  print $idf "request.course.uri=\n";  
  print $idf "request.course.sec=\n";  
  print $idf "request.role=cm\n";  
  print $idf "request.host=$ENV{'REMOTE_ADDR'}\n";  
  if ($FORM{'interface'}) {   if ($FORM{'interface'}) {
     $FORM{'interface'}=~s/\W//gs;      $FORM{'interface'}=~s/\W//gs;
     print $idf "browser.interface=$FORM{'interface'}\n";      $initial_env{"browser.interface"} = $FORM{'interface'};
     $ENV{'browser.interface'}=$FORM{'interface'};      $env{'browser.interface'}=$FORM{'interface'};
     foreach ('imagesuppress','appletsuppress',      foreach my $option ('imagesuppress','appletsuppress',
      'embedsuppress','fontenhance','blackwhite') {   'embedsuppress','fontenhance','blackwhite') {
  if (($FORM{$_} eq 'true') ||   if (($FORM{$option} eq 'true') ||
     ($userenv{$_} eq 'on')) {      ($userenv{$option} eq 'on')) {
     print $idf "browser.$_=on\n";      $initial_env{"browser.$option"} = "on";
  }   }
     }      }
  }   }
  if ($userroles ne '') { print $idf "$userroles"; }  
  $idf->close();   $env{'user.environment'} = "$lonids/$cookie.id";
   
    if (tie(my %disk_env,'GDBM_File',"$lonids/$cookie.id",
    &GDBM_WRCREAT(),0640)) {
       &add_to_env(\%disk_env,\%initial_env);
       &add_to_env(\%disk_env,\%userenv,'environment.');
       &add_to_env(\%disk_env,$userroles);
       &add_to_env(\%disk_env,$extra_env);
       untie(%disk_env);
    } else {
       &Apache::lonnet::logthis("<font color=blue>WARNING: ".
      'Could not create environment storage in lonauth: '.$!);
       return 'error: '.$!;
    }
     }      }
     $ENV{'request.role'}='cm';      $env{'request.role'}='cm';
     $ENV{'browser.type'}=$clientbrowser;      $env{'request.role.adv'}=$env{'user.adv'};
       $env{'browser.type'}=$clientbrowser;
 # -------------------------------------------------------------------- Log this  # -------------------------------------------------------------------- Log this
   
     &Apache::lonnet::log($domain,$username,$authhost,      &Apache::lonnet::log($domain,$username,$authhost,
Line 163  sub success { Line 204  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 $windowinfo=&Apache::lonmenu::open($clientos);
     my $startupremote=&Apache::lonmenu::startupremote($lowerurl);      my $startupremote=&Apache::lonmenu::startupremote($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 $bodytag=&Apache::loncommon::bodytag('Successful Login');      my $start_page=&Apache::loncommon::start_page('Successful Login',
     $startupremote,
     {'no_inline_link' => 1,});
       my $end_page  =&Apache::loncommon::end_page();
   
       my $continuelink;
       if (($env{'browser.interface'} eq 'textual') ||
           ($env{'environment.remote'} eq 'off')) {
    $continuelink="<a href=\"$lowerurl\">".&mt('Continue')."</a>";
       }
 # ------------------------------------------------- Output for successful login  # ------------------------------------------------- Output for successful login
   
     $r->send_cgi_header(<<ENDHEADER);      &Apache::loncommon::content_type($r,'text/html');
 Content-type: text/html      $r->header_out('Set-cookie' => $cookie);
 Set-cookie: $cookie      $r->send_http_header;
   
 ENDHEADER      my %lt=&Apache::lonlocal::texthash(
          'wel' => 'Welcome',
          'mes' => 'Welcome to the Learning<i>Online</i> Network with CAPA. Please wait while your session is being set up',
          'pro' => 'Problems',
          'log' => 'loginproblems.html',
          );
     $r->print(<<ENDSUCCESS);      $r->print(<<ENDSUCCESS);
 <html>  $start_page
 <head>  
 <title>Successful Login to the LearningOnline Network with CAPA</title>  
 $startupremote  
 </head>  
 $bodytag  
 $setflags  $setflags
 $windowinfo  $windowinfo
 <h1>Welcome!</h1>  <h1>$lt{'wel'}</h1>
 Welcome to the Learning<i>Online</i> Network with CAPA.  $lt{'mes'}.<p>
 Please wait while your session  <a href="/adm/$lt{'log'}">$lt{'pro'}?</a></p>
 is being set up.<p>  $remoteinfo
 <a href="/adm/loginproblems.html">Problems?</a></p>  
 $maincall  $maincall
 </body>  $continuelink
 </html>  $end_page
 ENDSUCCESS  ENDSUCCESS
 }  }
   
   sub add_to_env {
       my ($idf,$env_data,$prefix) = @_;
       while (my ($key,$value) = each(%$env_data)) {
    $idf->{$prefix.$key} = $value;
    $env{$prefix.$key}   = $value;
       }
   }
   
 # --------------------------------------------------------------- Failed login!  # --------------------------------------------------------------- Failed login!
   
 sub failed {  sub failed {
     my ($r,$message) = @_;      my ($r,$message) = @_;
     my $bodytag=&Apache::loncommon::bodytag('Unsuccessful Login');      my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,
     $r->send_cgi_header(<<ENDFHEADER);      {'no_inline_link' => 1,});
 Content-type: text/html      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');
       $r->send_http_header;
   
 ENDFHEADER  
     $r->print(<<ENDFAILED);      $r->print(<<ENDFAILED);
 <html>  $start_page
 <head>  <h1>$lt{'sorry'}</h1>
 <title>Unsuccessful Login to the LearningOnline Network with CAPA</title>  
 </head>  
 <html>  
 $bodytag  
 <h1>Sorry ...</h1>  
 <p><b>$message</b></p>  <p><b>$message</b></p>
 <p>Please <a href="/adm/login?username=$FORM{'uname'}&domain=$FORM{'udom'}">login</a> again.</p>  <p>$lt{'please'}</p>
 <p>  <p>
 <a href="/adm/loginproblems.html">Problems?</a></p>  <a href="/adm/$lt{'problemspage'}">$lt{'problems'}</a></p>
 </body>  $end_page
 </html>  
 ENDFAILED  ENDFAILED
 }  }
   
   # ------------------------------------------------------------------ Rerouting!
   
   sub reroute {
       my ($r) = @_;
       &Apache::loncommon::content_type($r,'text/html');
       $r->send_http_header;
       my $msg='<h1>Sorry ...</h1>
                Please <a href="/">log in again</a>.';
       &Apache::loncommon::simple_error_page($r,'Rerouting',$msg);
   }
   
 # ---------------------------------------------------------------- Main handler  # ---------------------------------------------------------------- Main handler
   
 sub handler {  sub handler {
     my $r = shift;      my $r = shift;
   
   # Are we re-routing?
       if (-e '/home/httpd/html/lon-status/reroute.txt') {
    &reroute($r);
    return OK;
       }
   
       &Apache::lonlocal::get_language_handle($r);
   
   # -------------------------------- Prevent users from attempting to login twice
       my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
       my $lonid=$cookies{'lonID'};
       my $cookie;
       if ($lonid) {
    my $handle=$lonid->value;
           $handle=~s/\W//g;
           my $lonidsdir=$r->dir_config('lonIDsDir');
           if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
   # Indeed, a valid token is found
       &Apache::loncommon::content_type($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(<<ENDFAILED);
   $start_page
   <h1>You are already logged in</h1>
   <p>Please either <a href="/adm/roles">continue the current session</a> or
   <a href="/adm/logout">logout</a>.</p>
   <p>
   <a href="/adm/loginproblems.html">Problems?</a></p>
   $end_page
   ENDFAILED
              return OK;
    }
       }
   
   # ---------------------------------------------------- No valid token, continue
   
   
     my $buffer;      my $buffer;
     $r->read($buffer,$r->header_in('Content-length'));      if ($r->header_in('Content-length') > 0) {
    $r->read($buffer,$r->header_in('Content-length'),0);
       }
     my @pairs=split(/&/,$buffer);      my @pairs=split(/&/,$buffer);
     my $pair; my $name; my $value;      my $pair; my $name; my $value;
     undef %FORM;      undef %FORM;
Line 241  sub handler { Line 358  sub handler {
        $FORM{$name}=$value;         $FORM{$name}=$value;
     }       } 
   
     if ((!$FORM{'uname'}) || (!$FORM{'upass'}) || (!$FORM{'udom'})) {      if ((!$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.');
         return OK;          return OK;
     }      }
   
   # split user logging in and "su"-user
   
       ($FORM{'uname'},$FORM{'suname'})=split(/\:/,$FORM{'uname'});
     $FORM{'uname'} =~ s/\W//g;      $FORM{'uname'} =~ s/\W//g;
       $FORM{'suname'} =~ s/\W//g;
     $FORM{'udom'}  =~ s/\W//g;      $FORM{'udom'}  =~ s/\W//g;
   
     my $role   = $r->dir_config('lonRole');      my $role   = $r->dir_config('lonRole');
Line 261  sub handler { Line 383  sub handler {
  failed($r,'Information needed to verify your login information is missing, inaccessible or expired.');   failed($r,'Information needed to verify your login information is missing, inaccessible or expired.');
         return OK;          return OK;
     } else {      } else {
         unless (&Apache::lonnet::reply('tmpdel:'.$FORM{'logtoken'},   my $reply = &Apache::lonnet::reply('tmpdel:'.$FORM{'logtoken'},
                                          $FORM{'serverid'}) eq 'ok') {     $FORM{'serverid'});
           if ( $reply ne 'ok' ) {
             &failed($r,'Session could not be opened.');              &failed($r,'Session could not be opened.');
       &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $FORM{'serverid'}." to get login token");
       return OK;
  }   }
     }      }
     my ($key,$firsturl)=split(/&/,$tmpinfo);      my ($key,$firsturl)=split(/&/,$tmpinfo);
Line 277  sub handler { Line 402  sub handler {
     else {      else {
  $cipher=new DES $keybin;   $cipher=new DES $keybin;
     }      }
       my $upass='';
       for (my $i=0;$i<=2;$i++) {
    my $chunk=
       $cipher->decrypt(unpack("a8",pack("H16",substr($FORM{'upass'.$i},0,16))));
   
     my $upass=$cipher->decrypt(   $chunk.=
        unpack("a8",pack("H16",substr($FORM{'upass'},0,16))));      $cipher->decrypt(unpack("a8",pack("H16",substr($FORM{'upass'.$i},16,16))));
   
     $upass.=$cipher->decrypt(  
        unpack("a8",pack("H16",substr($FORM{'upass'},16,16))));  
   
     $upass=substr($upass,1,ord(substr($upass,0,1)));   $chunk=substr($chunk,1,ord(substr($chunk,0,1)));
    $upass.=$chunk;
       }
   
 # ---------------------------------------------------------------- Authenticate  # ---------------------------------------------------------------- Authenticate
     my $authhost=Apache::lonnet::authenticate($FORM{'uname'},      my $authhost=Apache::lonnet::authenticate($FORM{'uname'},
Line 298  sub handler { Line 426  sub handler {
         return OK;          return OK;
     }      }
   
     if (($firsturl eq '') || ($firsturl eq '/adm/logout')) {      if (($firsturl eq '') || 
    ($firsturl=~/^\/adm\/(logout|remote)/)) {
  $firsturl='/adm/roles';   $firsturl='/adm/roles';
     }      }
   # --------------------------------- Are we attempting to login as somebody else?
     success($r,$FORM{'uname'},$FORM{'udom'},$authhost,$firsturl);      if ($FORM{'suname'}) {
   # ------------ see if the original user has enough privileges to pull this stunt
    if (&Apache::lonnet::privileged($FORM{'uname'},$FORM{'udom'})) {
   # ---------------------------------------------------- see if the su-user exists
       unless (&Apache::lonnet::homeserver($FORM{'suname'},$FORM{'udom'})
    eq 'no_host') {
    &Apache::lonnet::logthis(&Apache::lonnet::homeserver($FORM{'suname'},$FORM{'udom'}));
   # ------------------------------ see if the su-user is not too highly privileged
    unless (&Apache::lonnet::privileged($FORM{'suname'},$FORM{'udom'})) {
   # -------------------------------------------------------- actually switch users
       &Apache::lonnet::logperm('User '.$FORM{'uname'}.' at '.$FORM{'udom'}.
    ' logging in as '.$FORM{'suname'});
       $FORM{'uname'}=$FORM{'suname'};
    } else {
       &Apache::lonnet::logthis('Attempted switch user to privileged user');
    }
       }
    } else {
       &Apache::lonnet::logthis('Non-privileged user attempting switch user');
    }
       }
       if ($r->dir_config("lonBalancer") eq 'yes') {
    &success($r,$FORM{'uname'},$FORM{'udom'},$authhost,'noredirect');
    $r->internal_redirect('/adm/switchserver');
       } else {
    &success($r,$FORM{'uname'},$FORM{'udom'},$authhost,$firsturl);
       }
     return OK;      return OK;
 }  }
   
Removed from v.1.45  
changed lines
  Added in v.1.84

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