--- loncom/auth/lonauth.pm 2006/08/30 16:50:23 1.81 +++ loncom/auth/lonauth.pm 2008/10/01 11:11:08 1.95 @@ -1,7 +1,7 @@ # The LearningOnline Network # User Authentication Module # -# $Id: lonauth.pm,v 1.81 2006/08/30 16:50:23 albertel Exp $ +# $Id: lonauth.pm,v 1.95 2008/10/01 11:11:08 bisitz Exp $ # # Copyright Michigan State University Board of Trustees # @@ -32,162 +32,30 @@ use strict; use LONCAPA; use Apache::Constants qw(:common); use CGI qw(:standard); -use CGI::Cookie(); use DynaLoader; # for Crypt::DES version use Crypt::DES; use Apache::loncommon(); use Apache::lonnet; use Apache::lonmenu(); +use Apache::createaccount; use Fcntl qw(:flock); use Apache::lonlocal; - -my %FORM; - + # ------------------------------------------------------------ Successful login - sub success { - 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,$cookie,$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.'/'.$filename); - } - } - closedir(DIR); - -# Give them a new cookie + my ($r, $username, $domain, $authhost, $lowerurl, $extra_env, + $form) = @_; - $cookie="$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,$username); - my ($tmp) = keys(%userenv); - if ($tmp !~ /^(con_lost|error|no_such_host)/i) { - # default remote control to off - if ($userenv{'remote'} ne 'on') { $userenv{'remote'} = 'off'; } - } else { - undef(%userenv); - } - if (($userenv{'interface'}) && (!$FORM{'interface'})) { - $FORM{'interface'}=$userenv{'interface'}; - } - $env{'environment.remote'}=$userenv{'remote'}; - if ($userenv{'texengine'} eq 'ttm') { $clientmathml=1; } +# ------------------------------------------------------------ Get cookie ready + my $cookie = + &Apache::loncommon::init_user_environment($r, $username, $domain, + $authhost, $form, + {'extra_env' => $extra_env,}); -# --------------- 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 %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"; - } - } - } + my $public=($username eq 'public' && $domain eq 'public'); - $env{'user.environment'} = "$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: '.$!; - } + if ($public or $lowerurl eq 'noredirect') { return $cookie; } - &add_to_env($idf,\%initial_env); - &add_to_env($idf,\%userenv); - &add_to_env($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,$authhost, @@ -203,12 +71,9 @@ sub success { } # ------------------------------------------------------------ Get cookie ready - - if ($public or $lowerurl eq 'noredirect') { return $cookie; } - $cookie="lonID=$cookie; path=/"; # -------------------------------------------------------- Menu script and info - my $windowinfo=&Apache::lonmenu::open($clientos); + my $windowinfo=&Apache::lonmenu::open($env{'browser.os'}); my $startupremote=&Apache::lonmenu::startupremote($lowerurl); my $remoteinfo=&Apache::lonmenu::load_remote_msg($lowerurl); my $setflags=&Apache::lonmenu::setflags(); @@ -231,8 +96,8 @@ sub success { my %lt=&Apache::lonlocal::texthash( 'wel' => 'Welcome', - 'mes' => 'Welcome to the LearningOnline Network with CAPA. Please wait while your session is being set up', - 'pro' => 'Problems', + 'mes' => 'Welcome to the LearningOnline Network with CAPA. Please wait while your session is being set up.', + 'pro' => 'Login problems?', 'log' => 'loginproblems.html', ); $r->print(<$lt{'wel'} -$lt{'mes'}.

-$lt{'pro'}?

+$lt{'mes'}

+$lt{'pro'}

$remoteinfo $maincall $continuelink @@ -249,43 +114,27 @@ $end_page ENDSUCCESS } -sub add_to_env { - my ($idf,$env_data) = @_; - @env{keys(%$env_data)} = @$env_data{keys(%$env_data)}; - while (my ($key,$value) = each(%$env_data)) { - print $idf (&escape($key).'='.&escape($value)."\n"); - } -} - # --------------------------------------------------------------- Failed login! sub failed { - my ($r,$message) = @_; + my ($r,$message,$form) = @_; my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef, {'no_inline_link' => 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'); + sleep 1; # brute force counteraction: slow down attackers, which try to hack user authentication with automated scripts $r->send_http_header; - - $r->print(<$lt{'sorry'} -

$message

-

$lt{'please'}

-

-$lt{'problems'}

-$end_page -ENDFAILED -} + $r->print( + $start_page + .'

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

' + .'

'.&mt($message).'

' + .'

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

' + .'

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

' + .$end_page + ); + } # ------------------------------------------------------------------ Rerouting! @@ -293,8 +142,8 @@ sub reroute { my ($r) = @_; &Apache::loncommon::content_type($r,'text/html'); $r->send_http_header; - my $msg='

Sorry ...

- Please log in again.'; + my $msg='

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

' + .&mt('Please [_1]log in again[_2].'); &Apache::loncommon::simple_error_page($r,'Rerouting',$msg); } @@ -302,7 +151,7 @@ sub reroute { sub handler { my $r = shift; - + my $form; # Are we re-routing? if (-e '/home/httpd/html/lon-status/reroute.txt') { &reroute($r); @@ -312,83 +161,81 @@ sub handler { &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 '')) { + my $handle = &Apache::lonnet::check_for_valid_session($r); + if ($handle ne '') { # Indeed, a valid token is found - &Apache::loncommon::content_type($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?

-$end_page -ENDFAILED - return OK; - } + &Apache::loncommon::content_type($r,'text/html'); + $r->send_http_header; + my $start_page = + &Apache::loncommon::start_page('Already logged in'); + my $end_page = + &Apache::loncommon::end_page(); + $r->print( + $start_page + .'

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

' + .'

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

' + .'

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

' + .$end_page + ); + return OK; } # ---------------------------------------------------- No valid token, continue my $buffer; - $r->read($buffer,$r->header_in('Content-length'),0); - my @pairs=split(/&/,$buffer); - my $pair; my $name; my $value; - undef %FORM; - %FORM=(); - foreach $pair (@pairs) { - ($name,$value) = split(/=/,$pair); + 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; + $form{$name}=$value; } - if ((!$FORM{'uname'}) || (!$FORM{'upass0'}) || (!$FORM{'udom'})) { - failed($r,'Username, password and domain need to be specified.'); + if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) { + &failed($r,'Username, password and domain need to be specified.', + \%form); return OK; } # split user logging in and "su"-user - ($FORM{'uname'},$FORM{'suname'})=split(/\:/,$FORM{'uname'}); - $FORM{'uname'} =~ s/\W//g; - $FORM{'suname'} =~ s/\W//g; - $FORM{'udom'} =~ s/\W//g; + ($form{'uname'},$form{'suname'})=split(/\:/,$form{'uname'}); + $form{'uname'} = &LONCAPA::clean_username($form{'uname'}); + $form{'suname'}= &LONCAPA::clean_username($form{'suname'}); + $form{'udom'} = &LONCAPA::clean_domain( $form{'udom'}); 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'}, - $FORM{'serverid'}); + my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'}, + $form{'serverid'}); if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) { - failed($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.',\%form); return OK; } else { - my $reply = &Apache::lonnet::reply('tmpdel:'.$FORM{'logtoken'}, - $FORM{'serverid'}); + 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 ". $FORM{'serverid'}." to get login token"); + &failed($r,'Session could not be opened.',\%form); + &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $form{'serverid'}." to get login token"); return OK; } } + if (!&Apache::lonnet::domain($form{'udom'})) { + &failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form); + return OK; + } my ($key,$firsturl)=split(/&/,$tmpinfo); my $keybin=pack("H16",$key); @@ -403,25 +250,69 @@ ENDFAILED my $upass=''; for (my $i=0;$i<=2;$i++) { 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.= - $cipher->decrypt(unpack("a8",pack("H16",substr($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))); $upass.=$chunk; } # ---------------------------------------------------------------- Authenticate - my $authhost=Apache::lonnet::authenticate($FORM{'uname'}, - $upass, - $FORM{'udom'}); + my @cancreate; + my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'}); + if (ref($domconfig{'usercreation'}) eq 'HASH') { + if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') { + if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') { + @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}}; + } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') && + ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) { + @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}); + } + } + } + my $defaultauth; + if (grep(/^login$/,@cancreate)) { + $defaultauth = 1; + } + my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass, + $form{'udom'},$defaultauth); # --------------------------------------------------------------------- Failed? if ($authhost eq 'no_host') { - failed($r,'Username and/or password could not be authenticated.'); + &failed($r,'Username and/or password could not be authenticated.', + \%form); return OK; + } elsif ($authhost eq 'no_account_on_host') { + my %domconfig = + &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'}); + if (grep(/^login$/,@cancreate)) { + my $start_page = + &Apache::loncommon::start_page('Create a user account in LON-CAPA', + '',{'no_inline_link' => 1,}); + my $domdesc = &Apache::lonnet::domain($form{'udom'},'description'); + my $lonhost = $r->dir_config('lonHostID'); + my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'}; + my $contacts = + &Apache::loncommon::build_recipient_list(undef,'helpdeskmail', + $form{'udom'},$origmail); + my ($contact_email) = split(',',$contacts); + my $output = &Apache::createaccount::username_check($form{'uname'}, + $form{'udom'},$domdesc,'', + $lonhost,$contact_email,$contact_name); + &Apache::loncommon::content_type($r,'text/html'); + $r->send_http_header; + &Apache::createaccount::print_header($r,$start_page); + $r->print('

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

'. + &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'
'. + $output.&Apache::loncommon::end_page()); + return OK; + } else { + &failed($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 '') || @@ -429,19 +320,19 @@ ENDFAILED $firsturl='/adm/roles'; } # --------------------------------- Are we attempting to login as somebody else? - if ($FORM{'suname'}) { + if ($form{'suname'}) { # ------------ see if the original user has enough privileges to pull this stunt - if (&Apache::lonnet::privileged($FORM{'uname'},$FORM{'udom'})) { + if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'})) { # ---------------------------------------------------- see if the su-user exists - unless (&Apache::lonnet::homeserver($FORM{'suname'},$FORM{'udom'}) + unless (&Apache::lonnet::homeserver($form{'suname'},$form{'udom'}) eq 'no_host') { - &Apache::lonnet::logthis(&Apache::lonnet::homeserver($FORM{'suname'},$FORM{'udom'})); + &Apache::lonnet::logthis(&Apache::lonnet::homeserver($form{'suname'},$form{'udom'})); # ------------------------------ see if the su-user is not too highly privileged - unless (&Apache::lonnet::privileged($FORM{'suname'},$FORM{'udom'})) { + unless (&Apache::lonnet::privileged($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'}; + &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'); } @@ -450,11 +341,14 @@ ENDFAILED &Apache::lonnet::logthis('Non-privileged user attempting switch user'); } } + if ($r->dir_config("lonBalancer") eq 'yes') { - &success($r,$FORM{'uname'},$FORM{'udom'},$authhost,'noredirect'); + &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef, + \%form); $r->internal_redirect('/adm/switchserver'); } else { - &success($r,$FORM{'uname'},$FORM{'udom'},$authhost,$firsturl); + &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef, + \%form); } return OK; }