--- loncom/auth/lonauth.pm 2003/05/23 21:18:56 1.50 +++ loncom/auth/lonauth.pm 2006/10/06 14:29:44 1.82.2.1 @@ -1,7 +1,7 @@ # The LearningOnline Network # User Authentication Module # -# $Id: lonauth.pm,v 1.50 2003/05/23 21:18:56 www Exp $ +# $Id: lonauth.pm,v 1.82.2.1 2006/10/06 14:29:44 albertel Exp $ # # Copyright Michigan State University Board of Trustees # @@ -25,57 +25,71 @@ # # 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; 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 Fcntl qw(:flock); +use Apache::lonlocal; my %FORM; # ------------------------------------------------------------ Successful login sub success { - my ($r, $username, $domain, $authhost,$lowerurl) = @_; + my ($r, $username, $domain, $authhost, $lowerurl, $extra_env) = @_; my $lonids=$r->dir_config('lonIDsDir'); + my $public=($username eq 'public' && $domain eq 'public'); + # 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); + my ($filename,$cookie,$userroles); + my $now=time; -# Give them a new cookie + if ($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; - my $now=time; - $cookie="$username\_$now\_$domain\_$authhost"; +# Give them a new cookie + $cookie="$username\_$now\_$domain\_$authhost"; + # Initialize roles - my $userroles=Apache::lonnet::rolesinit($domain,$username,$authhost); - + $userroles=&Apache::lonnet::rolesinit($domain,$username,$authhost); + } # ------------------------------------ Check browser type and MathML capability my ($httpbrowser,$clientbrowser,$clientversion,$clientmathml, @@ -95,61 +109,85 @@ sub success { } # ------------------------------------------------------------- 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"; - } + # default remote control to off + if ($userenv{'remote'} ne 'on') { $userenv{'remote'} = 'off'; } + } else { + undef(%userenv); } if (($userenv{'interface'}) && (!$FORM{'interface'})) { $FORM{'interface'}=$userenv{'interface'}; } - $ENV{'environment.remote'}=$userenv{'remote'}; + $env{'environment.remote'}=$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 { - my $idf=Apache::File->new(">$lonids/$cookie.id"); - unless (flock($idf,LOCK_EX)) { - &Apache::lonnet::logthis("WARNING: ". - 'Could not obtain exclusive lock in lonauth: '.$!); - $idf->close(); - return 'error: '.$!; + 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) { + $initial_env{"environment.remote"} = "off"; } - if ($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 $idf "request.role.adv=$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"; + $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"; } } } - if ($userroles ne '') { print $idf "$userroles"; } - $idf->close(); - } - $ENV{'request.role'}='cm'; - $ENV{'request.role.adv'}=$ENV{'user.adv'}; - $ENV{'browser.type'}=$clientbrowser; + + $env{'user.environment'} = "$lonids/$cookie.id"; + open(my $idf,">$lonids/$cookie.id"); + unless (flock($idf,LOCK_EX)) { + &Apache::lonnet::logthis("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 &Apache::lonnet::log($domain,$username,$authhost, @@ -166,73 +204,149 @@ sub success { # ------------------------------------------------------------ Get cookie ready + if ($public or $lowerurl eq 'noredirect') { return $cookie; } + $cookie="lonID=$cookie; path=/"; # -------------------------------------------------------- Menu script and info my $windowinfo=&Apache::lonmenu::open($clientos); my $startupremote=&Apache::lonmenu::startupremote($lowerurl); + 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',undef,' '); + 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="".&mt('Continue').""; + } # ------------------------------------------------- Output for successful login - $r->send_cgi_header(<header_out('Set-cookie' => $cookie); + $r->send_http_header; + + my %lt=&Apache::lonlocal::texthash( + 'wel' => 'Welcome', + 'mes' => 'Welcome to the LearningOnline Network with CAPA. Please wait while your session is being set up', + 'pro' => 'Problems', + 'log' => 'loginproblems.html', + ); $r->print(< - -Successful Login to the LearningOnline Network with CAPA -$startupremote - -$bodytag +$start_page $setflags $windowinfo -

Welcome!

-Welcome to the LearningOnline Network with CAPA. -Please wait while your session -is being set up.

-Problems?

+

$lt{'wel'}

+$lt{'mes'}.

+$lt{'pro'}?

+$remoteinfo $maincall - - +$continuelink +$end_page ENDSUCCESS } +sub add_to_env { + my ($idf,$env_data,$prefix) = @_; + while (my ($key,$value) = each(%$env_data)) { + print $idf (&escape($prefix.$key).'='.&escape($value)."\n"); + $env{$prefix.$key} = $value; + } +} + # --------------------------------------------------------------- Failed login! sub failed { my ($r,$message) = @_; - my $bodytag=&Apache::loncommon::bodytag('Unsuccessful Login'); - $r->send_cgi_header(< 1,}); + my $end_page = &Apache::loncommon::end_page(); + + my %lt=('sorry' => &mt('Sorry ...'), + 'please' => + &mt('Please [_1]log in again[_2].', + "", + ''), + 'problemspage' => &mt('loginproblems.html'), + 'problems' => 'Problems', + ); + &Apache::loncommon::content_type($r,'text/html'); + $r->send_http_header; -ENDFHEADER $r->print(< - -Unsuccessful Login to the LearningOnline Network with CAPA - - -$bodytag -

Sorry ...

+$start_page +

$lt{'sorry'}

$message

-

Please log in again.

+

$lt{'please'}

-Problems?

- - +$lt{'problems'}

+$end_page ENDFAILED } +# ------------------------------------------------------------------ Rerouting! + +sub reroute { + my ($r) = @_; + &Apache::loncommon::content_type($r,'text/html'); + $r->send_http_header; + my $msg='

Sorry ...

+ Please log in again.'; + &Apache::loncommon::simple_error_page($r,'Rerouting',$msg); +} + # ---------------------------------------------------------------- Main handler sub handler { 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(<You are already logged in +

Please either continue the current session or +logout.

+

+Problems?

+$end_page +ENDFAILED + return OK; + } + } + +# ---------------------------------------------------- No valid token, continue + + my $buffer; - $r->read($buffer,$r->header_in('Content-length'),0); + if ($r->header_in('Content-length') > 0) { + $r->read($buffer,$r->header_in('Content-length'),0); + } my @pairs=split(/&/,$buffer); my $pair; my $name; my $value; undef %FORM; @@ -244,11 +358,16 @@ sub handler { $FORM{$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.'); return OK; } + +# split user logging in and "su"-user + + ($FORM{'uname'},$FORM{'suname'})=split(/\:/,$FORM{'uname'}); $FORM{'uname'} =~ s/\W//g; + $FORM{'suname'} =~ s/\W//g; $FORM{'udom'} =~ s/\W//g; my $role = $r->dir_config('lonRole'); @@ -264,9 +383,12 @@ sub handler { failed($r,'Information needed to verify your login information is missing, inaccessible or expired.'); return OK; } else { - unless (&Apache::lonnet::reply('tmpdel:'.$FORM{'logtoken'}, - $FORM{'serverid'}) eq 'ok') { + my $reply = &Apache::lonnet::reply('tmpdel:'.$FORM{'logtoken'}, + $FORM{'serverid'}); + if ( $reply ne 'ok' ) { &failed($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); @@ -280,14 +402,17 @@ sub handler { else { $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( - unpack("a8",pack("H16",substr($FORM{'upass'},0,16)))); - - $upass.=$cipher->decrypt( - unpack("a8",pack("H16",substr($FORM{'upass'},16,16)))); + $chunk.= + $cipher->decrypt(unpack("a8",pack("H16",substr($FORM{'upass'.$i},16,16)))); - $upass=substr($upass,1,ord(substr($upass,0,1))); + $chunk=substr($chunk,1,ord(substr($chunk,0,1))); + $upass.=$chunk; + } # ---------------------------------------------------------------- Authenticate my $authhost=Apache::lonnet::authenticate($FORM{'uname'}, @@ -301,11 +426,38 @@ sub handler { 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); +# --------------------------------- Are we attempting to login as somebody else? + 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; }