loncom/auth/lonauth.pm - diff

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Diff for /loncom/auth/lonauth.pm between versions 1.56 and 1.121.2.26

-version 1.56, 2003/09/16 19:23:47
+version 1.121.2.26, 2022/02/28 01:07:15
  Line 25
  #
  # 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;
  use strict;
+ use LONCAPA qw(:DEFAULT :match);
  use Apache::Constants qw(:common);
- use Apache::File;
  use CGI qw(:standard);
- use CGI::Cookie();
- use DynaLoader; # for Crypt::DES version
- use Crypt::DES;
  use Apache::loncommon();
- use Apache::lonnet();
+ use Apache::lonnet;
  use Apache::lonmenu();
+ use Apache::createaccount;
  use Fcntl qw(:flock);
  use Apache::lonlocal;
+ use Apache::File();
- my %FORM;
+ use HTML::Entities;
+ use Digest::MD5;
+ use CGI::Cookie();
  # ------------------------------------------------------------ Successful login
  sub success {
-     my ($r, $username, $domain, $authhost,$lowerurl) = @_;
+     my ($r, $username, $domain, $authhost, $lowerurl, $extra_env,
-     my $lonids=$r->dir_config('lonIDsDir');
+ 	$form,$cid,$expirepub) = @_;
- # See if old ID present, if so, remove
-     my $filename;
-     opendir(DIR,$lonids);
-     while ($filename=readdir(DIR)) {
-        if ($filename=~/^$username\_\d+\_$domain\_$authhost\.id$/) {
- 	  unlink($lonids.'/'.$filename);
-        }
-     }
-     closedir(DIR);
- # Give them a new cookie
+ # ------------------------------------------------------------ Get cookie ready
+     my $cookie =
-     my $cookie;
+ 	&Apache::loncommon::init_user_environment($r, $username, $domain,
-     my $now=time;
+ 						  $authhost, $form,
-     $cookie="$username\_$now\_$domain\_$authhost";
+ 						  {'extra_env' => $extra_env,});
- # Initialize roles
-     my $userroles=Apache::lonnet::rolesinit($domain,$username,$authhost);
- # ------------------------------------ Check browser type and MathML capability
-     my ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
+     my $public=($username eq 'public' && $domain eq 'public');
-         $clientunicode,$clientos) = &Apache::loncommon::decode_user_agent($r);
- # -------------------------------------- Any accessibility options to remember?
+     if ($public or $lowerurl eq 'noredirect') { return $cookie; }
-     if (($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 $userenv;
-     my %userenv=Apache::lonnet::dump('environment',$domain,$username);
-     my ($tmp) = keys(%userenv);
-     if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
- 	foreach my $key (keys(%userenv)) {
- 	    $userenv.="environment.$key=$userenv{$key}\n";
- 	}
-     }
-     if (($userenv{'interface'}) && (!$FORM{'interface'})) {
- 	$FORM{'interface'}=$userenv{'interface'};
-     }
-     $ENV{'environment.remote'}=$userenv{'remote'};
- # --------------- 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
-     {
- 	my $idf=Apache::File->new(">$lonids/$cookie.id");
- 	unless (flock($idf,LOCK_EX)) {
- 	    &Apache::lonnet::logthis("<font color=blue>WARNING: ".
- 			   'Could not obtain exclusive lock in lonauth: '.$!);
- 	    $idf->close();
- 	    return 'error: '.$!;
- 	}
- 	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";
-         if ($FORM{'localpath'}) {
-            print $idf "browser.localpath=$FORM{'localpath'}\n";
-            print $idf "browser.localres=$FORM{'localres'}\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 $idf "request.role.adv=$ENV{'user.adv'}\n";
- 	print $idf "request.host=$ENV{'REMOTE_ADDR'}\n";
- 	if ($FORM{'interface'}) {
- 	    $FORM{'interface'}=~s/\W//gs;
- 	    print $idf "browser.interface=$FORM{'interface'}\n";
- 	    $ENV{'browser.interface'}=$FORM{'interface'};
- 	    foreach ('imagesuppress','appletsuppress',
- 		     'embedsuppress','fontenhance','blackwhite') {
- 		if (($FORM{$_} eq 'true') ||
- 		    ($userenv{$_} eq 'on')) {
- 		    print $idf "browser.$_=on\n";
- 		}
- 	    }
- 	}
- 	if ($userroles ne '') { print $idf "$userroles"; }
- 	$idf->close();
-     }
-     $ENV{'request.role'}='cm';
-     $ENV{'request.role.adv'}=$ENV{'user.adv'};
-     $ENV{'browser.type'}=$clientbrowser;
  # -------------------------------------------------------------------- Log this
+     my $ip = &Apache::lonnet::get_requestor_ip();
      &Apache::lonnet::log($domain,$username,$authhost,
-                          "Login $ENV{'REMOTE_ADDR'}");
+                          "Login $ip");
  # ------------------------------------------------- Check for critical messages
- Line 175  sub success {
+ Line 73  sub success {
          }
      }
- # ------------------------------------------------------------ Get cookie ready
+ # ------------------------------------------------------------ Get cookies ready
+     my ($securecookie,$defaultcookie);
-     $cookie="lonID=$cookie; path=/";
+     my $ssl = $r->subprocess_env('https');
+     if ($ssl) {
+         $securecookie="lonSID=$cookie; path=/; HttpOnly; secure";
+         my $lonidsdir=$r->dir_config('lonIDsDir');
+         if (($lonidsdir) && (-e "$lonidsdir/$cookie.id")) {
+             my $linkname=substr(Digest::MD5::md5_hex(Digest::MD5::md5_hex(time(). {}. rand(). $$)), 0, 32).'_linked';
+             if (-e "$lonidsdir/$linkname.id") {
+                 unlink("$lonidsdir/$linkname.id");
+             }
+             my $made_symlink = eval { symlink("$lonidsdir/$cookie.id",
+                                               "$lonidsdir/$linkname.id"); 1 };
+             if ($made_symlink) {
+                 $defaultcookie = "lonLinkID=$linkname; path=/; HttpOnly;";
+                 &Apache::lonnet::appenv({'user.linkedenv' => $linkname});
+             }
+         }
+     } else {
+         $defaultcookie = "lonID=$cookie; path=/; HttpOnly;";
+     }
  # -------------------------------------------------------- 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'};
+         my $update=$env{'user.update.time'};
+         if (!$update) {
+             $update = $then;
+         }
+         if (exists($env{$envkey})) {
+             my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus);
+             &Apache::lonnet::role_status($envkey,$update,$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};
+         my $encrypted;
+         if ($destsymb =~ m{^/enc/}) {
+             $encrypted = 1;
+             if ($cid) {
+                 $destsymb = &Apache::lonenc::unencrypted($destsymb,$cid);
+             }
+         }
+         $destination  .= ($destination =~ /\?/) ? '&' : '?';
+         if ($destsymb =~ /___/) {
+             my ($map,$resid,$desturl)=split(/___/,$destsymb);
+             $desturl = &Apache::lonnet::clutter($desturl);
+             if ($encrypted) {
+                 $desturl = &Apache::lonenc::encrypted($desturl,1,$cid);
+                 $destsymb = $form->{symb};
+             }
+             $desturl = &HTML::Entities::encode($desturl,'"<>&');
+             $destsymb = &HTML::Entities::encode($destsymb,'"<>&');
+             $destination .= 'destinationurl='.$desturl.
+                             '&destsymb='.$destsymb;
+         } elsif (!$encrypted) {
+             $destsymb = &HTML::Entities::encode($destsymb,'"<>&');
+             $destination .= 'destinationurl='.$destsymb;
+         }
+     }
+     if ($destination =~ m{^/adm/roles}) {
+         $destination  .= ($destination =~ /\?/) ? '&' : '?';
+         $destination .= 'source=login';
+     }
+     my $windowinfo=&Apache::lonmenu::open($env{'browser.os'});
+     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 $bodytag=&Apache::loncommon::bodytag('Successful Login');
+     my $brcrum = [{'href' => '',
+                    'text' => 'Successful Login'},];
+     my $start_page=&Apache::loncommon::start_page('Successful Login',
+                                                   $startupremote,
+                                                   {'no_inline_link' => 1,
+                                                    'bread_crumbs' => $brcrum,});
+     my $end_page  =&Apache::loncommon::end_page();
+     my $continuelink;
+     if ($env{'environment.remote'} eq 'off') {
+ 	$continuelink='<a href="'.$destination.'">'.&mt('Continue').'</a>';
+     }
  # ------------------------------------------------- Output for successful login
-     $r->send_cgi_header(<<ENDHEADER);
+     &Apache::loncommon::content_type($r,'text/html');
- Content-type: text/html
+     if ($securecookie) {
- Set-cookie: $cookie
+         $r->headers_out->add('Set-cookie' => $securecookie);
+     }
+     if ($defaultcookie) {
+         $r->headers_out->add('Set-cookie' => $defaultcookie);
+     }
+     if ($expirepub) {
+         my $c = new CGI::Cookie(-name    => 'lonPubID',
+                                 -value   => '',
+                                 -expires => '-10y',);
+         $r->headers_out->add('Set-cookie' => $c);
+     }
+     $r->send_http_header;
+     my %lt=&Apache::lonlocal::texthash(
+ 				       'wel' => 'Welcome',
+ 				       'pro' => 'Login problems?',
+ 				       );
+     my $loginhelp = &loginhelpdisplay($domain);
+     if ($loginhelp) {
+         $loginhelp = '<p><a href="'.$loginhelp.'">'.$lt{'pro'}.'</a></p>';
+     }
- ENDHEADER
+     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);
- <html>
+ $start_page
- <head>
- <title>Successful Login to the LearningOnline Network with CAPA</title>
- $startupremote
- </head>
- $bodytag
  $setflags
  $windowinfo
- <h1>Welcome!</h1>
+ <h1>$lt{'wel'}</h1>
- Welcome to the Learning<i>Online</i> Network with CAPA.
+ $welcome
- Please wait while your session
+ $loginhelp
- is being set up.<p>
+ $remoteinfo
- <a href="/adm/loginproblems.html">Problems?</a></p>
  $maincall
- </body>
+ $continuelink
- </html>
+ $end_page
  ENDSUCCESS
+     return;
  }
  # --------------------------------------------------------------- Failed login!
  sub failed {
-     my ($r,$message) = @_;
+     my ($r,$message,$form,$authhost) = @_;
-     my $bodytag=&Apache::loncommon::bodytag('Unsuccessful Login');
+     (undef,undef,undef,my $clientmathml,my $clientunicode) =
-     $r->send_cgi_header(<<ENDFHEADER);
+         &Apache::loncommon::decode_user_agent();
- Content-type: text/html
+     my $args = {};
+     if ($clientunicode && !$clientmathml) {
- ENDFHEADER
+         $args = {'browser.unicode' => 1};
-     $r->print(<<ENDFAILED);
+     }
- <html>
- <head>
+     my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,$args);
- <title>Unsuccessful Login to the LearningOnline Network with CAPA</title>
+     my $uname = &Apache::loncommon::cleanup_html($form->{'uname'});
- </head>
+     my $udom = &Apache::loncommon::cleanup_html($form->{'udom'});
- <html>
+     if (&Apache::lonnet::domain($udom,'description') eq '') {
- $bodytag
+         undef($udom);
- <h1>Sorry ...</h1>
+     }
- <p><b>$message</b></p>
+     my $retry = '/adm/login';
- <p>Please <a href="/adm/login?username=$FORM{'uname'}&domain=$FORM{'udom'}">log in again</a>.</p>
+     if ($uname eq $form->{'uname'}) {
- <p>
+         $retry .= '?username='.$uname;
- <a href="/adm/loginproblems.html">Problems?</a></p>
+     }
- </body>
+     if ($udom) {
- </html>
+         $retry .= (($retry=~/\?/)?'&amp;':'?').'domain='.$udom;
- ENDFAILED
+     }
- }
+     my $lonhost = $r->dir_config('lonHostID');
+     my $querystr;
+     my $result = &set_retry_token($form,$lonhost,\$querystr);
+     if ($result eq 'fail') {
+         if (exists($form->{role})) {
+             my $role = &Apache::loncommon::cleanup_html($form->{role});
+             if ($role ne '') {
+                 $retry .= (($retry=~/\?/)?'&amp;':'?').'role='.$role;
+             }
+         }
+         if (exists($form->{symb})) {
+             my $symb = &Apache::loncommon::cleanup_html($form->{symb});
+             if ($symb ne '') {
+                 $retry .= (($retry=~/\?/)?'&amp;':'?').'symb='.$symb;
+             }
+         }
+         if (exists($form->{firsturl})) {
+             my $firsturl = &Apache::loncommon::cleanup_html($form->{firsturl});
+             if ($firsturl ne '') {
+                 $retry .= (($retry=~/\?/)?'&amp;':'?').'firsturl='.$firsturl;
+             }
+         }
+     } elsif ($querystr ne '') {
+         $retry .= (($retry=~/\?/)?'&amp;':'?').$querystr;
+     }
+     my $end_page = &Apache::loncommon::end_page();
+     &Apache::loncommon::content_type($r,'text/html');
+     $r->send_http_header;
+     my @actions =
+          (&mt('Please [_1]log in again[_2].','<a href="'.$retry.'">','</a>'));
+     my $loginhelp = &loginhelpdisplay($udom);
+     if ($loginhelp) {
+         push(@actions, '<a href="'.$loginhelp.'">'.&mt('Login problems?').'</a>');
+     }
+     #FIXME: link to helpdesk might be added here
+     $r->print(
+        $start_page
+       .'<h2>'.&mt('Sorry ...').'</h2>'
+       .&Apache::lonhtmlcommon::confirm_success(&mt($message),1).'<br /><br />'
+       .&Apache::lonhtmlcommon::actionbox(\@actions)
+       .$end_page
+     );
+  }
  # ------------------------------------------------------------------ Rerouting!
  sub reroute {
-     my $r=shift;
+     my ($r) = @_;
-     my $bodytag=&Apache::loncommon::bodytag('Rerouting');
+     &Apache::loncommon::content_type($r,'text/html');
-     $r->send_cgi_header(<<ENDRFHEADER);
+     $r->send_http_header;
- Content-type: text/html
+     my $msg='<b>'.&mt('Sorry ...').'</b><br />'
+            .&mt('Please [_1]log in again[_2].');
- ENDRFHEADER
+     &Apache::loncommon::simple_error_page($r,'Rerouting',$msg,{'no_auto_mt_msg' => 1});
-     $r->print(<<ENDRFAILED);
- <html>
- <head>
- <title>Rerouting Login to the LearningOnline Network with CAPA</title>
- </head>
- <html>
- $bodytag
- <h1>Sorry ...</h1>
- Please <a href="/">log in again</a>.
- </body>
- </html>
- ENDRFAILED
  }
  # ---------------------------------------------------------------- Main handler
  sub handler {
      my $r = shift;
+     my $londocroot = $r->dir_config('lonDocRoot');
  # Are we re-routing?
-     if (-e '/home/httpd/html/lon-status/reroute.txt') {
+     if (-e "$londocroot/lon-status/reroute.txt") {
  	&reroute($r);
  	return OK;
      }
-     &Apache::lonlocal::get_language_handle();
+     &Apache::lonlocal::get_language_handle($r);
-     my $buffer;
+ # -------------------------------- Prevent users from attempting to login twice
-     $r->read($buffer,$r->header_in('Content-length'),0);
+     my $handle = &Apache::lonnet::check_for_valid_session($r);
-     my @pairs=split(/&/,$buffer);
+     if ($handle ne '') {
-     my $pair; my $name; my $value;
+         my $lonidsdir=$r->dir_config('lonIDsDir');
-     undef %FORM;
+         if ($handle=~/^publicuser\_/) {
-     %FORM=();
+ # For "public user" - remove it, we apparently really want to login
-     foreach $pair (@pairs) {
+             unlink($r->dir_config('lonIDsDir')."/$handle.id");
-        ($name,$value) = split(/=/,$pair);
+         } else {
-        $value =~ tr/+/ /;
+ # Indeed, a valid token is found
-        $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
+             &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
-        $FORM{$name}=$value;
+ 	    &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';
+             my %form = &get_form_items($r);
+             if ($form{'logtoken'}) {
+                 my $tmpinfo = &Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
+                                                      $form{'serverid'});
+                 unless (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost') ||
+                         ($tmpinfo eq 'no_such_host')) {
+                     my ($des_key,$firsturl,@rest)=split(/&/,$tmpinfo);
+                     $firsturl = &unescape($firsturl);
+                     my %info;
+                     foreach my $item (@rest) {
+                         my ($key,$value) = split(/=/,$item);
+                         $info{$key} = &unescape($value);
+                     }
+                     if ($firsturl ne '') {
+                         $info{'firsturl'} = $firsturl;
+                         $dest = $firsturl;
+                     }
+                 }
+             }
+             $r->print(
+                $start_page
+               .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
+               .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].'
+                     ,'<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>')
+               .'</p>'
+               .$end_page
+             );
+             return OK;
+         }
+     }
+ # ---------------------------------------------------- No valid token, continue
-     if ((!$FORM{'uname'}) || (!$FORM{'upass'}) || (!$FORM{'udom'})) {
+     my %form = &get_form_items($r);
- 	failed($r,'Username, password and domain need to be specified.');
+     if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) {
+ 	&failed($r,'Username, password and domain need to be specified.',
+ 		\%form);
          return OK;
      }
-     $FORM{'uname'} =~ s/\W//g;
-     $FORM{'udom'}  =~ s/\W//g;
+ # split user logging in and "su"-user
+     ($form{'uname'},$form{'suname'},$form{'sudom'})=split(/\:/,$form{'uname'});
+     $form{'uname'} = &LONCAPA::clean_username($form{'uname'});
+     $form{'suname'}= &LONCAPA::clean_username($form{'suname'});
+     $form{'udom'}  = &LONCAPA::clean_domain($form{'udom'});
+     $form{'sudom'} = &LONCAPA::clean_domain($form{'sudom'});
      my $role   = $r->dir_config('lonRole');
      my $domain = $r->dir_config('lonDefDomain');
      my $prodir = $r->dir_config('lonUsersDir');
+     my $contact_name = &mt('LON-CAPA helpdesk');
  # ---------------------------------------- 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;
      } else {
-         unless (&Apache::lonnet::reply('tmpdel:'.$FORM{'logtoken'},
+ 	my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'},
-                                          $FORM{'serverid'}) eq 'ok') {
+ 					   $form{'serverid'});
-             &failed($r,'Session could not be opened.');
+         if ( $reply ne 'ok' ) {
+             &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");
+ 	    return OK;
  	}
      }
-     my ($key,$firsturl)=split(/&/,$tmpinfo);
-     my $keybin=pack("H16",$key);
+     if (!&Apache::lonnet::domain($form{'udom'})) {
+         &failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form);
-     my $cipher;
+         return OK;
-     if ($Crypt::DES::VERSION>=2.03) {
- 	$cipher=new Crypt::DES $keybin;
-     }
-     else {
- 	$cipher=new DES $keybin;
      }
-     my $upass=$cipher->decrypt(
+     my ($des_key,$firsturl,@rest)=split(/&/,$tmpinfo);
-        unpack("a8",pack("H16",substr($FORM{'upass'},0,16))));
+     $firsturl = &unescape($firsturl);
+     foreach my $item (@rest) {
-     $upass.=$cipher->decrypt(
+         my ($key,$value) = split(/=/,$item);
-        unpack("a8",pack("H16",substr($FORM{'upass'},16,16))));
+         $form{$key} = &unescape($value);
+     }
-     $upass=substr($upass,1,ord(substr($upass,0,1)));
+     my $upass = &Apache::loncommon::des_decrypt($des_key,$form{'upass0'});
  # ---------------------------------------------------------------- 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?
      if ($authhost eq 'no_host') {
- 	failed($r,'Username and/or password could not be authenticated.');
+         my $pwdverify;
-         return OK;
+         if (&Apache::lonnet::homeserver($form{'uname'},$form{'udom'}) eq 'no_host') {
+             my %possunames = &alternate_unames_check($form{'uname'},$form{'udom'});
+             if (keys(%possunames) > 0) {
+                 foreach my $rulematch (keys(%possunames)) {
+                     my $possuname = $possunames{$rulematch};
+                     if (($possuname ne '') && ($possuname =~ /^$match_username$/)) {
+                         $authhost=Apache::lonnet::authenticate($possuname,$upass,
+                                                                $form{'udom'},undef,
+                                                                $clientcancheckhost);
+                         if (($authhost eq 'no_host') || ($authhost eq 'no_account_on_host')) {
+                             next;
+                         } elsif (($authhost ne '') && (&Apache::lonnet::hostname($authhost) ne '')) {
+                             $pwdverify = 1;
+                             &Apache::lonnet::logthis("Authenticated user: $possuname was submitted as: $form{'uname'}");
+                             $form{'uname'} = $possuname;
+                             last;
+                         }
+                     }
+                 }
+             }
+         }
+         unless ($pwdverify) {
+             &failed($r,'Username and/or password could not be authenticated.',
+                     \%form);
+             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 '') || ($firsturl eq '/adm/logout')) {
+     if (($firsturl eq '') ||
+ 	($firsturl=~/^\/adm\/(logout|remote)/)) {
  	$firsturl='/adm/roles';
      }
-     success($r,$FORM{'uname'},$FORM{'udom'},$authhost,$firsturl);
+     my ($hosthere,%sessiondata);
-     return OK;
+     if ($form{'iptoken'}) {
+         %sessiondata = &Apache::lonnet::tmpget($form{'iptoken'});
+         my $delete = &Apache::lonnet::tmpdel($form{'iptoken'});
+         if (($sessiondata{'domain'} eq $form{'udom'}) &&
+             ($sessiondata{'username'} eq $form{'uname'})) {
+             $hosthere = 1;
+         }
+     }
+ # --------------------------------- Are we attempting to login as somebody else?
+     if ($form{'suname'}) {
+         my ($suname,$sudom,$sudomref);
+         $suname = $form{'suname'};
+         $sudom = $form{'udom'};
+         if ($form{'sudom'}) {
+             unless ($sudom eq $form{'sudom'}) {
+                 if (&Apache::lonnet::domain($form{'sudom'})) {
+                     $sudomref = [$form{'sudom'}];
+                     $sudom = $form{'sudom'};
+                 }
+             }
+         }
+ # ------------ see if the original user has enough privileges to pull this stunt
+ 	if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'},$sudomref)) {
+ # ---------------------------------------------------- see if the su-user exists
+ 	    unless (&Apache::lonnet::homeserver($suname,$sudom) eq 'no_host') {
+ # ------------------------------ see if the su-user is not too highly privileged
+ 		if (&Apache::lonnet::privileged($suname,$sudom)) {
+                     &Apache::lonnet::logthis('Attempted switch user to privileged user');
+                 } else {
+                     my $noprivswitch;
+ #
+ # su-user's home server and user's home server must have one of:
+ # (a) same domain
+ # (b) same primary library server for the two domains
+ # (c) same "internet domain" for primary library server(s) for home servers' domains
+ #
+                     my $suprim = &Apache::lonnet::domain($sudom,'primary');
+                     my $suintdom = &Apache::lonnet::internet_dom($suprim);
+                     unless ($sudom eq $form{'udom'}) {
+                         my $uprim = &Apache::lonnet::domain($form{'udom'},'primary');
+                         my $uintdom = &Apache::lonnet::internet_dom($uprim);
+                         unless ($suprim eq $uprim) {
+                             unless ($suintdom eq $uintdom) {
+                                 &Apache::lonnet::logthis('Attempted switch user '
+                                    .'to user with different "internet domain".');
+                                 $noprivswitch = 1;
+                             }
+                         }
+                     }
+                     unless ($noprivswitch) {
+ #
+ # server where log-in occurs must have same "internet domain" as su-user's home
+ # server
+ #
+                         my $lonhost = $r->dir_config('lonHostID');
+                         my $hostintdom = &Apache::lonnet::internet_dom($lonhost);
+                         if ($hostintdom ne $suintdom) {
+                             &Apache::lonnet::logthis('Attempted switch user on a '
+                                 .'server with a different "internet domain".');
+                         } else {
+ # -------------------------------------------------------- actually switch users
+ 			    &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.
+ 				$form{'udom'}.' logging in as '.$suname.':'.$sudom);
+ 			    $form{'uname'}=$suname;
+                             if ($form{'udom'} ne $sudom) {
+                                 $form{'udom'}=$sudom;
+                             }
+                         }
+                     }
+ 		}
+ 	    }
+ 	} else {
+ 	    &Apache::lonnet::logthis('Non-privileged user attempting switch user');
+ 	}
+     }
+     my ($is_balancer,$otherserver);
+     unless ($hosthere) {
+         ($is_balancer,$otherserver) =
+             &Apache::lonnet::check_loadbalancing($form{'uname'},$form{'udom'},'login');
+         if ($is_balancer) {
+             # 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);
+             if (($found_server) && ($balancer_cookie =~ /^\Q$env{'user.domain'}\E_\Q$env{'user.name'}\E_/)) {
+                 $otherserver = $found_server;
+             }
+             if ($otherserver eq '') {
+                 my $lowest_load;
+                 ($otherserver,undef,undef,undef,$lowest_load) = &Apache::lonnet::choose_server($form{'udom'});
+                 if ($lowest_load > 100) {
+                     $otherserver = &Apache::lonnet::spareserver($r,$lowest_load,$lowest_load,1,$form{'udom'});
+                 }
+             }
+             if ($otherserver ne '') {
+                 my @hosts = &Apache::lonnet::current_machine_ids();
+                 if (grep(/^\Q$otherserver\E$/,@hosts)) {
+                     $hosthere = $otherserver;
+                 }
+             }
+         }
+     }
+     if (($is_balancer) && (!$hosthere)) {
+         if ($otherserver) {
+             &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
+                      \%form);
+             my $switchto = '/adm/switchserver?otherserver='.$otherserver;
+             if (($firsturl) && ($firsturl ne '/adm/switchserver') && ($firsturl ne '/adm/roles')) {
+                 $switchto .= '&origurl='.$firsturl;
+             }
+             if ($form{'role'}) {
+                 $switchto .= '&role='.$form{'role'};
+             }
+             if ($form{'symb'}) {
+                 $switchto .= '&symb='.$form{'symb'};
+             }
+             $r->internal_redirect($switchto);
+         } else {
+             &Apache::loncommon::content_type($r,'text/html');
+             $r->send_http_header;
+             $r->print(&noswitch());
+         }
+         return OK;
+     } else {
+         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);
+                 my $switchto = '/adm/switchserver?otherserver='.$otherserver;
+                 if (($firsturl) && ($firsturl ne '/adm/switchserver') && ($firsturl ne '/adm/roles')) {
+                     $switchto .= '&origurl='.$firsturl;
+                 }
+                 if ($form{'role'}) {
+                     $switchto .= '&role='.$form{'role'};
+                 }
+                 if ($form{'symb'}) {
+                     $switchto .= '&symb='.$form{'symb'};
+                 }
+                 $r->internal_redirect($switchto);
+             } else {
+                 &Apache::loncommon::content_type($r,'text/html');
+                 $r->send_http_header;
+                 $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($r,$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;
+             }
+         }
+         if (($is_balancer) && ($hosthere)) {
+             $form{'noloadbalance'} = $hosthere;
+         }
+         my $extra_env;
+         if (($hosthere) && ($sessiondata{'sessionserver'} ne '')) {
+             if ($sessiondata{'origurl'} ne '') {
+                 $firsturl = $sessiondata{'origurl'};
+                 $form{'firsturl'} = $sessiondata{'origurl'};
+                 my @names = ('role','symb','linkprot','linkkey');
+                 foreach my $item (@names) {
+                     if ($sessiondata{$item} ne '') {
+                         $form{$item} = $sessiondata{$item};
+                     }
+                 }
+             }
+         }
+         &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef,
+                  \%form);
+         return OK;
+     }
+ }
+ sub get_form_items {
+     my ($r) = @_;
+     my $buffer;
+     if ($r->header_in('Content-length') > 0) {
+         $r->read($buffer,$r->header_in('Content-length'),0);
+     }
+     my %form;
+     foreach my $pair (split(/&/,$buffer)) {
+        my ($name,$value) = split(/=/,$pair);
+        $value =~ tr/+/ /;
+        $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
+        $form{$name}=$value;
+     }
+     return %form;
+ }
+ sub set_retry_token {
+     my ($form,$lonhost,$querystr) = @_;
+     if (ref($form) eq 'HASH') {
+         my ($firsturl,$token,$extras,@names);
+         @names = ('role','symb','iptoken');
+         foreach my $name (@names) {
+             if ($form->{$name} ne '') {
+                 $extras .= '&'.$name.'='.&escape($form->{$name});
+                 last if ($name eq 'linkprot');
+             }
+         }
+         my $firsturl = $form->{'firsturl'};
+         if (($firsturl ne '') || ($extras ne '')) {
+             $extras .= ':retry';
+             $token = &Apache::lonnet::reply('tmpput:'.&escape($firsturl).
+                                             $extras,$lonhost);
+             if (($token eq 'con_lost') || ($token eq 'no_such_host')) {
+                 return 'fail';
+             } else {
+                 if (ref($querystr)) {
+                     $$querystr = 'retry='.$token;
+                 }
+                 return 'ok';
+             }
+         }
+     }
+     return;
+ }
+ sub check_can_host {
+     my ($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 $alias = &Apache::lonnet::use_proxy_alias($r,$login_host);
+                 $hostname = $alias if ($alias ne '');
+                 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 $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 $result;
+ }
+ sub loginhelpdisplay {
+     my ($authdomain) = @_;
+     my $login_help = 1;
+     my $lang = &Apache::lonlocal::current_language();
+     if ($login_help) {
+         my $dom = $authdomain;
+         if ($dom eq '') {
+             $dom = &Apache::lonnet::default_login_domain();
+         }
+         my %domconfhash = &Apache::loncommon::get_domainconf($dom);
+         my $loginhelp_url;
+         if ($lang) {
+             $loginhelp_url = $domconfhash{$dom.'.login.helpurl_'.$lang};
+             if ($loginhelp_url ne '') {
+                 return $loginhelp_url;
+             }
+         }
+         $loginhelp_url = $domconfhash{$dom.'.login.helpurl_nolang'};
+         if ($loginhelp_url ne '') {
+             return $loginhelp_url;
+         } else {
+             return '/adm/loginproblems.html';
+         }
+     }
+     return;
+ }
+ sub alternate_unames_check {
+     my ($uname,$udom) = @_;
+     my %possunames;
+     my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
+     if (ref($domdefs{'unamemap_rule'}) eq 'ARRAY') {
+         if (@{$domdefs{'unamemap_rule'}} > 0) {
+             %possunames =
+                 &Apache::lonnet::inst_rulecheck($udom,$uname,undef,
+                                                 'unamemap',$domdefs{'unamemap_rule'});
+         }
+     }
+     return %possunames;
  }
 ;

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>

Removed from v.1.56
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	Added in v.1.121.2.26