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Glob free cleaning up of old session profiles (to avoid shell calls)

    1: # The LearningOnline Network
    2: # User Authentication Module
    3: # 5/21/99,5/22,5/25,5/26,5/27,5/29,6/2,6/11,6/14,6/15
    4: # 16/11,12/16,
    5: # 1/14,2/24,2/28,2/29,3/7,5/29,5/30,5/31,6/1,6/5,6/29,
    6: # 7/1,7/10,10/2,10/5,10/9,10/26,10/30,11/10 Gerd Kortemeyer
    7: 
    8: package Apache::lonauth;
    9: 
   10: use Apache::Constants qw(:common);
   11: use Apache::File;
   12: use CGI qw(:standard);
   13: use CGI::Cookie();
   14: use Crypt::DES;
   15: use Apache::lonnet();
   16: use Apache::lonmenu();
   17: 
   18: # ------------------------------------------------------------ Successful login
   19: 
   20: sub success {
   21:     my ($r, $username, $domain, $authhost,$lowerurl) = @_;
   22:     my $lonids=$r->dir_config('lonIDsDir');
   23: 
   24: # See if old ID present, if so, remove
   25: 
   26:     my $filename;
   27:     opendir(DIR,$lonids);
   28:     while ($filename=readdir(DIR)) {
   29:        if ($filename=~/^$username\_\d+\_$domain\_$authhost\.id$/) {
   30: 	  unlink($lonids.'/'.$filename);
   31:        }
   32:     }
   33:     closedir(DIR);
   34: 
   35: # Give them a new cookie
   36: 
   37:     my $cookie;
   38:     my $now=time;
   39:     $cookie="$username\_$now\_$domain\_$authhost";
   40: 
   41: # Initialize roles
   42: 
   43:     my $userroles=Apache::lonnet::rolesinit($domain,$username,$authhost);
   44: 
   45: # ------------------------------------ Check browser type and MathML capability
   46: 
   47:     my @browsertype=split(/\&/,$r->dir_config("lonBrowsDet"));
   48:     my %mathcap=split(/\&/,$r->dir_config("lonMathML"));
   49:     my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
   50:     my $i;
   51:     my $clientbrowser='unknown';
   52:     my $clientversion='0';
   53:     my $clientmathml='';
   54:     for ($i=0;$i<=$#browsertype;$i++) {
   55:         my ($bname,$match,$notmatch,$vreg,$minv)=split(/\:/,$browsertype[$i]);
   56: 	if (($httpbrowser=~/$match/i)  && ($httpbrowser!~/$notmatch/i)) {
   57: 	    $clientbrowser=$bname;
   58:             $httpbrowser=~/$vreg/i;
   59: 	    $clientversion=$1;
   60:             $clientmathml=($clientversion>=$minv);
   61:         }
   62:     }
   63:     my $clientos='unknown';
   64:     if (($httpbrowser=~/linux/i) ||
   65:         ($httpbrowser=~/unix/i) ||
   66:         ($httpbrowser=~/ux/i) ||
   67:         ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
   68:     if (($httpbrowser=~/vax/i) ||
   69:         ($httpbrowser=~/vms/i)) { $clientos='vms'; }
   70:     if ($httpbrowser=~/next/i) { $clientos='next'; }
   71:     if (($httpbrowser=~/mac/i) ||
   72:         ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
   73:     if ($httpbrowser=~/win/i) { $clientos='win'; }
   74: 
   75: # ------------------------------------------------------------- Get environment
   76: 
   77:     my $userenv=Apache::lonnet::reply("dump:$domain:$username:environment",
   78:                                       $authhost);
   79:     if (($userenv eq 'con_lost') || 
   80:         ($userenv =~ /^error\:/)) {
   81:         $userenv='';
   82:     }
   83:     $userenv=~s/\&/\nenvironment\./g;
   84:     if ($userenv ne '') {
   85: 	$userenv='environment.'.$userenv;
   86:     }
   87: # --------------------------------------------------------- Write first profile
   88: 
   89:        {
   90: 	    my $idf=Apache::File->new(">$lonids/$cookie.id");
   91:             if ($userenv ne '') { print $idf "$userenv\n"; }
   92:             print $idf "user.name=$username\n";
   93:             print $idf "user.domain=$domain\n";
   94:             print $idf "user.home=$authhost\n";
   95:             print $idf "browser.type=$clientbrowser\n";
   96:             print $idf "browser.version=$clientversion\n";
   97:             print $idf "browser.mathml=$clientmathml\n";
   98:             print $idf "browser.os=$clientos\n";
   99:             print $idf "request.course.fn=\n";
  100:             print $idf "request.course.uri=\n";
  101:             print $idf "request.course.sec=\n";
  102:             print $idf "request.role=cm\n";
  103:             print $idf "request.host=$ENV{'HTTP_HOST'}\n"; 
  104:             if ($userroles ne '') { print $idf "$userroles"; }
  105:         }
  106: 
  107: # -------------------------------------------------------------------- Log this
  108: 
  109:     &Apache::lonnet::log($domain,$username,$authhost,
  110:                          "Login $ENV{'REMOTE_ADDR'}");
  111: 
  112: # ------------------------------------------------- Check for critical messages
  113: 
  114:     my @what=&Apache::lonnet::dump('critical');
  115:     if ($what[0]) {
  116: 	if ($what[0] ne 'con_lost') {
  117: 	    $lowerurl='/adm/email/critical/'.$what[0];
  118:         }
  119:     }
  120: 
  121: # ------------------------------------------------------------ Get cookie ready
  122: 
  123:     $cookie="lonID=$cookie; path=/";
  124: # -------------------------------------------------------- Menu script and info
  125: 
  126:     my $windowinfo=&Apache::lonmenu::open();
  127: # ------------------------------------------------- Output for successful login
  128: 
  129:     $r->send_cgi_header(<<ENDHEADER);
  130: Content-type: text/html
  131: Set-cookie: $cookie
  132: 
  133: ENDHEADER
  134:     $r->print(<<ENDSUCCESS);
  135: <html>
  136: <head>
  137: <title>Successful Login to the LearningOnline Network with CAPA</title>
  138: <meta HTTP-EQUIV="Refresh" CONTENT="1; url=$lowerurl">
  139: </head>
  140: <body bgcolor="#FFFFFF">
  141:     $windowinfo
  142: <h1>Welcome!</h1>
  143: </body>
  144: </html>
  145: ENDSUCCESS
  146: }
  147: 
  148: # --------------------------------------------------------------- Failed login!
  149: 
  150: sub failed {
  151:     my ($r,$message) = @_;
  152:     $r->send_cgi_header(<<ENDFHEADER);
  153: Content-type: text/html
  154: 
  155: ENDFHEADER
  156:     $r->print(<<ENDFAILED);
  157: <html>
  158: <head>
  159: <title>Unsuccessful Login to the LearningOnline Network with CAPA</title>
  160: </head>
  161: <html>
  162: <body bgcolor="#FFFFFF">
  163: <h1>Sorry ...</h1>
  164: <h2>$message to use the Learning<i>Online</i> Network with CAPA</h2>
  165: </body>
  166: </html>
  167: ENDFAILED
  168: }
  169: 
  170: # ---------------------------------------------------------------- Main handler
  171: 
  172: sub handler {
  173:     my $r = shift;
  174: 
  175:     my $buffer;
  176:     $r->read($buffer,$r->header_in('Content-length'));
  177:     my @pairs=split(/&/,$buffer);
  178:     my $pair; my $name; my $value; my %FORM;
  179:     foreach $pair (@pairs) {
  180:        ($name,$value) = split(/=/,$pair);
  181:        $value =~ tr/+/ /;
  182:        $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
  183:        $FORM{$name}=$value;
  184:     } 
  185: 
  186:     if ((!$FORM{'uname'}) || (!$FORM{'upass'}) || (!$FORM{'udom'})) {
  187: 	failed($r,'Username, password and domain need to be specified');
  188:         return OK;
  189:     }
  190:     $FORM{'uname'} =~ s/\W//g;
  191:     $FORM{'udom'}  =~ s/\W//g;
  192: 
  193:     my $role   = $r->dir_config('lonRole');
  194:     my $domain = $r->dir_config('lonDefDomain');
  195:     my $prodir = $r->dir_config('lonUsersDir');
  196: 
  197: # ---------------------------------------- Get the information from login token
  198: 
  199:     my $tmpinfo=Apache::lonnet::reply('tmpget:'.$FORM{'logtoken'},
  200:                                       $FORM{'serverid'});
  201: 
  202:     if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
  203: 	failed($r,'Login token missing, inaccessible or expired');
  204:         return OK;
  205:     }
  206:     
  207:     my ($key,$firsturl)=split(/&/,$tmpinfo);
  208: 
  209:     my $keybin=pack("H16",$key);
  210: 
  211:     my $cipher=new DES $keybin;
  212: 
  213:     my $upass=$cipher->decrypt(
  214:        unpack("a8",pack("H16",substr($FORM{'upass'},0,16))));
  215: 
  216:     $upass.=$cipher->decrypt(
  217:        unpack("a8",pack("H16",substr($FORM{'upass'},16,16))));
  218: 
  219:     $upass=substr($upass,1,ord(substr($upass,0,1)));
  220: 
  221: # ---------------------------------------------------------------- Authenticate
  222:     my $authhost=Apache::lonnet::authenticate($FORM{'uname'},
  223:                                               $upass,
  224:                                               $FORM{'udom'});
  225:     
  226: # --------------------------------------------------------------------- Failed?
  227: 
  228:     if ($authhost eq 'no_host') {
  229: 	failed($r,'Username and/or password could not be authenticated');
  230:         return OK;
  231:     }
  232: 
  233:     if (($firsturl eq '') || ($firsturl eq '/adm/logout')) {
  234: 	$firsturl='/res/adm/pages/index.html';
  235:     }
  236: 
  237:     success($r,$FORM{'uname'},$FORM{'udom'},$authhost,$firsturl);
  238:     return OK;
  239: }
  240: 
  241: 1;
  242: __END__
  243: 
  244: