1: # The LearningOnline Network
2: # Login Screen
3: #
4: # $Id: lonlogin.pm,v 1.14 2002/03/13 19:32:55 albertel Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14,
29: # 1/14/00,5/29,5/30,6/1,6/29,7/1,11/9,
30: # 1/17/01 Gerd Kortemeyer
31: #
32: # 2/7/02,2/8,2/12,2/14,2/15,2/19 Josh Brunskole
33:
34: package Apache::lonlogin;
35:
36: use strict;
37: use Apache::Constants qw(:common);
38: use Apache::File ();
39: use Apache::lonnet();
40: use Apache::loncommon();
41:
42: sub handler {
43: my $r = shift;
44: $r->content_type('text/html');
45: &Apache::loncommon::no_cache($r);
46: $r->send_http_header;
47: return OK if $r->header_only;
48:
49: my $iconpath= $r->dir_config('lonIconsURL');
50: my $domain = $r->dir_config('lonDefDomain');
51: my $role = $r->dir_config('lonRole');
52: my $loadlim = $r->dir_config('lonLoadLim');
53: my $servadm = $r->dir_config('lonAdmEMail');
54: my $sysadm = $r->dir_config('lonSysEMail');
55: my $lonhost = $r->dir_config('lonHostID');
56: my $tabdir = $r->dir_config('lonTabDir');
57: my $include = $r->dir_config('lonIncludes');
58:
59: my $loadavg;
60: {
61: my $loadfile=Apache::File->new('/proc/loadavg');
62: $loadavg=<$loadfile>;
63: }
64: $loadavg =~ s/\s.*//g;
65: my $loadpercent=100*$loadavg/$loadlim;
66:
67: my $otherserver='http://'.$ENV{'SERVER_NAME'};
68: my $firsturl=$ENV{'request.firsturl'};
69: # ---------------------------------------- Are we access server and overloaded?
70: if (($role eq 'access') && ($loadpercent>100.0)) {
71: $otherserver=Apache::lonnet::spareserver();
72: }
73:
74: # -------------------------------------------------------- Set login parameters
75:
76: my @hexstr=('0','1','2','3','4','5','6','7',
77: '8','9','a','b','c','d','e','f');
78: my $lkey='';
79: for (0..7) {
80: $lkey.=$hexstr[rand(15)];
81: }
82:
83: my $ukey='';
84: for (0..7) {
85: $ukey.=$hexstr[rand(15)];
86: }
87:
88: my $lextkey=hex($lkey);
89: my $uextkey=hex($ukey);
90: my $logtoken=Apache::lonnet::reply(
91: 'tmpput:'.$ukey.$lkey.'&'.$firsturl,
92: $lonhost);
93:
94: # --------------------------------------------------- Print login screen header
95: $r->print(<<ENDHEADER);
96: <html>
97: <head>
98: <title>The LearningOnline Network with CAPA Login</title>
99: </head>
100: ENDHEADER
101: # ---------------------------------------------------- Serve out DES JavaScript
102: {
103: my $jsh=Apache::File->new($include."/londes.js");
104: $r->print(<$jsh>);
105: }
106: # ---------------------------------------------------------- Serve rest of page
107: $r->print(<<ENDDOCUMENT);
108:
109: <body bgcolor="#006600" text="#000000" link="#999999" vlink="#999999"
110: onLoad="init();" topmargin=0 leftmargin=0 marginwidth=0 marginheight=0>
111:
112: <script language="JavaScript">
113: function send()
114: {
115: this.document.server.elements.uname.value
116: =this.document.client.elements.uname.value;
117:
118: this.document.server.elements.udom.value
119: =this.document.client.elements.udom.value;
120:
121: uextkey=this.document.client.elements.uextkey.value;
122: lextkey=this.document.client.elements.lextkey.value;
123: initkeys();
124:
125: this.document.server.elements.upass.value
126: =crypted(this.document.client.elements.upass.value);
127:
128: this.document.server.submit();
129: }
130: </script>
131:
132: <!-- The Main Table -->
133: <table width="100%" cellpadding=0 cellspacing=0 border=0>
134:
135: <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top">
136: <input type=hidden name=logtoken value="$logtoken">
137: <input type=hidden name=serverid value="$lonhost">
138: <input type=hidden name=uname value="">
139: <input type=hidden name=upass value="">
140: <input type=hidden name=udom value="">
141: </form>
142:
143: <!-- The LON-CAPA Header -->
144: <tr>
145:
146: <!-- Row 1 Columns 2-4 -->
147: <td width="100%" height=75 colspan=4 align="left" valign="top" bgcolor="#006600"><img src="$iconpath/header.gif" border=0 /></td>
148: </tr>
149:
150: <!-- The gray bar that starts the two table frames -->
151: <tr>
152:
153: <!-- Row 2 Column 1 -->
154: <td width=182 height=27 bgcolor="#cccccc"> </td>
155:
156: <!-- Row 2 Column 2 -->
157: <td width=27 height=27 align="left" background="$iconpath/filltop.gif"><img src="$iconpath/upperleft.gif" border=0 /></td>
158:
159: <!-- Row 2 Column 3 -->
160: <td height=27 background="$iconpath/filltop.gif"><img src="$iconpath/filltop.gif" /></td>
161:
162: <!-- Row 2 Column 4 -->
163: <td width=27 height=27 align="right" background="$iconpath/filltop.gif"><img src="$iconpath/upperright.gif" border=0 /></td>
164: </tr>
165: <tr>
166:
167: <!-- A cell that will hold the 'access' and 'about' buttons -->
168: <!-- Row 3 Column 1 -->
169: <td valign="top" height=60 align="center" bgcolor="#cccccc">
170: <a href="/adm/accessibility.html"><img src="$iconpath/accessbutton.gif" border=0 /></a>
171: <br />
172: <a href="/adm/about.html"><img src="$iconpath/aboutlon.gif" border=0 /></a>
173: </td>
174:
175: <!-- The shaded space between the two main columns -->
176: <!-- Row 3 Column 2 -->
177: <td width=27 height=60 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" /></td>
178:
179: <!-- The right main column holding the large LON-CAPA logo-->
180: <!-- Rows 3-4 Column 3 -->
181: <td align="center" valign="top" width="100%" height="100%" rowspan=2 bgcolor="#ffffff">
182: <center>
183: <img src="$iconpath/loncapalogo.gif" />
184: </center>
185: </td>
186:
187: <!-- Row 3 Column 4 -->
188: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" /></td>
189: </tr>
190: <tr>
191:
192: <!-- The entry form -->
193: <!-- Row 4 Column 1 -->
194: <td align="center" valign="middle" bgcolor="#cccccc">
195: <form name="client">
196: <input type="hidden" name="lextkey" value="$lextkey">
197: <input type="hidden" name="uextkey" value="$uextkey">
198:
199: <!-- Start the sub-table for text and input alignment -->
200: <table border=0 cellspacing=0 cellpadding=0>
201: <tr><td bgcolor="#cccccc" colspan=2><img src="$iconpath/userauthentication.gif" /></td></tr>
202: <tr>
203: <td bgcolor="#ffffff"><br /><font size=-1><b> User Name:</b></font></td>
204: <td bgcolor="#ffffff"><br /><input type="text" name="uname" size="10" /></td>
205: </tr>
206: <tr>
207: <td bgcolor="#ffffff"><font size=-1><b> Password:</b></font></td>
208: <td bgcolor="#ffffff"><input type="password" name="upass" size="10" /></td>
209: </tr>
210: <tr>
211: <td bgcolor="#ffffff"><font size=-1><b> Domain:</b></font></td>
212: <td bgcolor="#ffffff"><input type="text" name="udom" size="10" value=$domain /></td>
213: </tr>
214: <tr>
215: <td bgcolor="#ffffff" valign="bottom" align="center" colspan=2>
216: <br />
217: <input type="button" value="Log In" onClick="send();" />
218: </td>
219: </tr>
220: </table>
221: <!-- End sub-table -->
222:
223: </form>
224: </td>
225:
226: <!-- Row 4 Column 2 -->
227: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" /></td>
228:
229: <!-- Row 4 Column 4 -->
230: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" /></td>
231: </tr>
232: <tr>
233:
234: <!-- Row 5 Column 1 -->
235: <td bgcolor="#cccccc" valign="middle" align="left">
236: <br />
237: <table border=0 cellspacing=0 cellpadding=0>
238: <tr>
239: <td bgcolor="#cccccc" align="left" valign="top">
240: <small><b> Domain: </b></small>
241: </td>
242: <td bgcolor="#cccccc" align="left" valign="top">
243: <small><tt> $domain</tt></small>
244: </td>
245: </tr>
246: <tr>
247: <td bgcolor="#cccccc" align="left" valign="top">
248: <small><b> Server: </b></small>
249: </td>
250: <td bgcolor="#cccccc" align="left" valign="top">
251: <small><tt> $lonhost ($role)</tt></small>
252: </td>
253: </tr>
254: <tr>
255: <td bgcolor="#cccccc" align="left" valign="top">
256: <small><b> Load: </b></small>
257: </td>
258: <td bgcolor="#cccccc" align="left" valign="top">
259: <small><tt> $loadpercent percent</tt></small>
260: </td>
261: </tr>
262: </table>
263: <br />
264: <small>
265: <b> System Administration:</b><br />
266: <tt> $sysadm</tt><br />
267: <b> Server Administration:</b><br />
268: <tt> $servadm</tt>
269: </small>
270: </td>
271:
272: <!-- Row 5 Column 2 -->
273: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" /></td>
274:
275: <!-- Row 5 Column 3 -->
276: <td width="100%" valign="bottom" bgcolor="#ffffff"><img src="$iconpath/litetext.gif" /><img src="$iconpath/lite.gif" /></td>
277:
278: <!-- Row 5 Column 4 -->
279: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" /></td>
280: </tr>
281: <tr>
282:
283: <!-- Row 6 Column 1 -->
284: <td bgcolor="#cccccc"> </td>
285:
286: <!-- Row 6 Column 2 -->
287: <td align="left" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerleft.gif" /></td>
288:
289: <!-- Row 6 Column 3 -->
290: <td background="$iconpath/fillbottom.gif"><img src="$iconpath/fillbottom.gif" /></td>
291:
292: <!-- Row 6 Column 4 -->
293: <td align="right" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerright.gif" /></td>
294: </tr>
295: </table>
296: </body>
297: </html>
298:
299: ENDDOCUMENT
300: return OK;
301: }
302:
303: 1;
304: __END__
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