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File:  [LON-CAPA] / loncom / auth / lonlogin.pm
Revision 1.6: download - view: text, annotated - select for diffs
Thu Jun 29 20:43:03 2000 UTC (23 years, 11 months ago) by www
Branches: MAIN
CVS tags: HEAD
Login mechanism now uses encryption
lond has new routines for temporary entries tmpget, tmpput

    1: # The LearningOnline Network
    2: # Login Screen
    3: # 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14,
    4: # 1/14/00,5/29,5/30,6/1,6/29 Gerd Kortemeyer
    5: #
    6: package Apache::lonlogin;
    7: 
    8: use strict;
    9: use Apache::Constants qw(:common);
   10: use Apache::File ();
   11: use Apache::lonnet();
   12: 
   13: sub handler {
   14:     my $r = shift;
   15:     $r->content_type('text/html');
   16:     $r->send_http_header;
   17:     return OK if $r->header_only;
   18: 
   19:     my $iconpath= $r->dir_config('lonIconsURL');
   20:     my $domain  = $r->dir_config('lonDefDomain');
   21:     my $role    = $r->dir_config('lonRole');
   22:     my $loadlim = $r->dir_config('lonLoadLim');
   23:     my $servadm = $r->dir_config('lonAdmEMail');
   24:     my $sysadm  = $r->dir_config('lonSysEMail');
   25:     my $lonhost = $r->dir_config('lonHostID');
   26:     my $tabdir  = $r->dir_config('lonTabDir');
   27:     my $include = $r->dir_config('lonIncludes');
   28: 
   29:     my $loadavg;
   30:    {
   31:        my $loadfile=Apache::File->new('/proc/loadavg');
   32:        $loadavg=<$loadfile>;
   33:    }
   34:     $loadavg =~ s/\s.*//g;
   35:     my $loadpercent=100*$loadavg/$loadlim;
   36: 
   37:     my $otherserver='';
   38:     my $firsturl=$ENV{'request.firsturl'};
   39: # ---------------------------------------- Are we access server and overloaded?
   40:     if (($role eq 'access') && ($loadpercent>100.0)) {
   41:         $otherserver=Apache::lonnet::spareserver();
   42:     }
   43: 
   44: # -------------------------------------------------------- Set login parameters
   45: 
   46:     my @hexstr=('0','1','2','3','4','5','6','7',
   47:                 '8','9','a','b','c','d','e','f');
   48:     my $lkey='';
   49:     for (0..7) {
   50:         $lkey.=$hexstr[rand(15)];
   51:     }
   52: 
   53:     my $ukey='';
   54:     for (0..7) {
   55:         $ukey.=$hexstr[rand(15)];
   56:     }
   57: 
   58:     my $lextkey=hex($lkey);
   59:     my $uextkey=hex($ukey);
   60:     my $logtoken=Apache::lonnet::reply(
   61:        'tmpput:'.$ukey.$lkey.':'.$firsturl,
   62:        $lonhost);
   63: 
   64: # --------------------------------------------------- Print login screen header
   65:     $r->print(<<ENDHEADER);
   66: <html>
   67: <head>
   68: <title>The LearningOnline Network with CAPA Login</title>
   69: </head>
   70: ENDHEADER
   71: # ---------------------------------------------------- Serve out DES JavaScript
   72:     {
   73: 	my $jsh=Apache::File->new($include."/londes.js");
   74:         $r->print(<$jsh>);
   75:     }
   76: # ---------------------------------------------------------- Serve rest of page
   77:     $r->print(<<ENDDOCUMENT);
   78: 
   79: <body bgcolor="#FFFFFF" onLoad="init();">
   80: 
   81: <script language="JavaScript">
   82: 
   83:     function send() {
   84: 	this.document.server.elements.uname.value
   85:        =this.document.client.elements.uname.value;
   86: 
   87:         this.document.server.elements.udom.value
   88:        =this.document.client.elements.udom.value;
   89: 
   90:         uextkey=this.document.client.elements.uextkey.value;
   91:         lextkey=this.document.client.elements.lextkey.value;
   92:         initkeys();
   93: 
   94:         this.document.server.elements.upass.value
   95: 	    =crypted(this.document.client.elements.upass.value);
   96: 
   97:         this.document.server.submit();
   98:     }
   99: 
  100: </script>
  101: 
  102: <table width=600>
  103: <tr><td><img src="$iconpath/lonlogo.gif"></td>
  104: <td bgcolor="#DDDDDD">
  105: <font size=+1><b>User Authentication</b></font><p>
  106: 
  107:  <form name="server" action="$otherserver/adm/authenticate" 
  108:   method="post" target="_top">
  109:   <input type=hidden name=logtoken value="$logtoken">
  110:   <input type=hidden name=serverid value="$lonhost">
  111:   <input type=hidden name=uname value="">
  112:   <input type=hidden name=upass value="">
  113:   <input type=hidden name=udom value="">
  114:  </form>
  115: 
  116:  <form name="client">
  117:  <table border=2 bgcolor="#BBBBBB">
  118:  <tr><td>Username:</td><td><input type=text size=10 name=uname></td></tr>
  119:  <tr><td>Password:</td><td><input type=password size=10 name=upass></td></tr>
  120:  <tr><td>Domain:</td><td><input type=text size=10 value=$domain name=udom></td>
  121:  </tr>
  122:  <tr><td colspan=2><input type=button value=Login onClick="send();"></td></tr>
  123:  </table>
  124:  <input type=hidden name=lextkey value="$lextkey">
  125:  <input type=hidden name=uextkey value="$uextkey">
  126:  </form>
  127: 
  128: </td>
  129: </tr><tr><td bgcolor="#DDDDDD">
  130: <table border=1 bgcolor="#BBBBBB">
  131: <tr><td><font size="-1"><b>Domain:</b></font></td>
  132:     <td><font size="-1"><tt>$domain</tt></font></td>
  133:     <td rowspan=3><font size="-1"><b>LON System Administration:</b><br>
  134:                   <tt>$sysadm</tt><br>
  135:                   <b>Server Administration:</b><br>
  136:                   <tt>$servadm</tt></font></td></tr>
  137: <tr><td><font size="-1"><b>Server:</b></font></td>
  138:     <td><font size="-1"><tt>$lonhost ($role)</tt></font></td></tr>
  139: <tr><td><font size="-1"><b>Load:</b></font></td>
  140:     <td><font size="-1"><tt>$loadpercent</tt> percent</font></td></tr>
  141: </table>
  142: </td><td>
  143: <table align=right><tr><td><font size="+1">
  144: <b>L</b>aboratory&nbsp;for<br>
  145: <b>I</b>nstructional<br>
  146: <b>T</b>echnology&nbsp;in<br>
  147: <b>E</b>ducation</td><td>
  148: <img src="$iconpath/liteani.gif"></font></td></tr></table></td></tr></table>
  149: </body>
  150: </html>
  151: ENDDOCUMENT
  152:     return OK;
  153: } 
  154: 
  155: 1;
  156: __END__
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