1: # The LearningOnline Network
2: # Login Screen
3: #
4: # $Id: lonlogin.pm,v 1.15 2002/03/23 21:06:54 www 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: if ($lextkey>2147483647) { $lextkey-=4294967296; }
90:
91: my $uextkey=hex($ukey);
92: if ($uextkey>2147483647) { $uextkey-=4294967296; }
93:
94: my $logtoken=Apache::lonnet::reply(
95: 'tmpput:'.$ukey.$lkey.'&'.$firsturl,
96: $lonhost);
97:
98: # --------------------------------------------------- Print login screen header
99: $r->print(<<ENDHEADER);
100: <html>
101: <head>
102: <title>The LearningOnline Network with CAPA Login</title>
103: </head>
104: ENDHEADER
105: # ---------------------------------------------------- Serve out DES JavaScript
106: {
107: my $jsh=Apache::File->new($include."/londes.js");
108: $r->print(<$jsh>);
109: }
110: # ---------------------------------------------------------- Serve rest of page
111: $r->print(<<ENDDOCUMENT);
112:
113: <body bgcolor="#006600" text="#000000" link="#999999" vlink="#999999"
114: onLoad="init();" topmargin=0 leftmargin=0 marginwidth=0 marginheight=0>
115:
116: <script language="JavaScript">
117: function send()
118: {
119: this.document.server.elements.uname.value
120: =this.document.client.elements.uname.value;
121:
122: this.document.server.elements.udom.value
123: =this.document.client.elements.udom.value;
124:
125: uextkey=this.document.client.elements.uextkey.value;
126: lextkey=this.document.client.elements.lextkey.value;
127: initkeys();
128:
129: this.document.server.elements.upass.value
130: =crypted(this.document.client.elements.upass.value);
131:
132: this.document.server.submit();
133: }
134: </script>
135:
136: <!-- The Main Table -->
137: <table width="100%" cellpadding=0 cellspacing=0 border=0>
138:
139: <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top">
140: <input type=hidden name=logtoken value="$logtoken">
141: <input type=hidden name=serverid value="$lonhost">
142: <input type=hidden name=uname value="">
143: <input type=hidden name=upass value="">
144: <input type=hidden name=udom value="">
145: </form>
146:
147: <!-- The LON-CAPA Header -->
148: <tr>
149:
150: <!-- Row 1 Columns 2-4 -->
151: <td width="100%" height=75 colspan=4 align="left" valign="top" bgcolor="#006600"><img src="$iconpath/header.gif" border=0 /></td>
152: </tr>
153:
154: <!-- The gray bar that starts the two table frames -->
155: <tr>
156:
157: <!-- Row 2 Column 1 -->
158: <td width=182 height=27 bgcolor="#cccccc"> </td>
159:
160: <!-- Row 2 Column 2 -->
161: <td width=27 height=27 align="left" background="$iconpath/filltop.gif"><img src="$iconpath/upperleft.gif" border=0 /></td>
162:
163: <!-- Row 2 Column 3 -->
164: <td height=27 background="$iconpath/filltop.gif"><img src="$iconpath/filltop.gif" /></td>
165:
166: <!-- Row 2 Column 4 -->
167: <td width=27 height=27 align="right" background="$iconpath/filltop.gif"><img src="$iconpath/upperright.gif" border=0 /></td>
168: </tr>
169: <tr>
170:
171: <!-- A cell that will hold the 'access' and 'about' buttons -->
172: <!-- Row 3 Column 1 -->
173: <td valign="top" height=60 align="center" bgcolor="#cccccc">
174: <a href="/adm/accessibility.html"><img src="$iconpath/accessbutton.gif" border=0 /></a>
175: <br />
176: <a href="/adm/about.html"><img src="$iconpath/aboutlon.gif" border=0 /></a>
177: </td>
178:
179: <!-- The shaded space between the two main columns -->
180: <!-- Row 3 Column 2 -->
181: <td width=27 height=60 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" /></td>
182:
183: <!-- The right main column holding the large LON-CAPA logo-->
184: <!-- Rows 3-4 Column 3 -->
185: <td align="center" valign="top" width="100%" height="100%" rowspan=2 bgcolor="#ffffff">
186: <center>
187: <img src="$iconpath/loncapalogo.gif" />
188: </center>
189: </td>
190:
191: <!-- Row 3 Column 4 -->
192: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" /></td>
193: </tr>
194: <tr>
195:
196: <!-- The entry form -->
197: <!-- Row 4 Column 1 -->
198: <td align="center" valign="middle" bgcolor="#cccccc">
199: <form name="client">
200: <input type="hidden" name="lextkey" value="$lextkey">
201: <input type="hidden" name="uextkey" value="$uextkey">
202:
203: <!-- Start the sub-table for text and input alignment -->
204: <table border=0 cellspacing=0 cellpadding=0>
205: <tr><td bgcolor="#cccccc" colspan=2><img src="$iconpath/userauthentication.gif" /></td></tr>
206: <tr>
207: <td bgcolor="#ffffff"><br /><font size=-1><b> User Name:</b></font></td>
208: <td bgcolor="#ffffff"><br /><input type="text" name="uname" size="10" /></td>
209: </tr>
210: <tr>
211: <td bgcolor="#ffffff"><font size=-1><b> Password:</b></font></td>
212: <td bgcolor="#ffffff"><input type="password" name="upass" size="10" /></td>
213: </tr>
214: <tr>
215: <td bgcolor="#ffffff"><font size=-1><b> Domain:</b></font></td>
216: <td bgcolor="#ffffff"><input type="text" name="udom" size="10" value=$domain /></td>
217: </tr>
218: <tr>
219: <td bgcolor="#ffffff" valign="bottom" align="center" colspan=2>
220: <br />
221: <input type="button" value="Log In" onClick="send();" />
222: </td>
223: </tr>
224: </table>
225: <!-- End sub-table -->
226:
227: </form>
228: </td>
229:
230: <!-- Row 4 Column 2 -->
231: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" /></td>
232:
233: <!-- Row 4 Column 4 -->
234: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" /></td>
235: </tr>
236: <tr>
237:
238: <!-- Row 5 Column 1 -->
239: <td bgcolor="#cccccc" valign="middle" align="left">
240: <br />
241: <table border=0 cellspacing=0 cellpadding=0>
242: <tr>
243: <td bgcolor="#cccccc" align="left" valign="top">
244: <small><b> Domain: </b></small>
245: </td>
246: <td bgcolor="#cccccc" align="left" valign="top">
247: <small><tt> $domain</tt></small>
248: </td>
249: </tr>
250: <tr>
251: <td bgcolor="#cccccc" align="left" valign="top">
252: <small><b> Server: </b></small>
253: </td>
254: <td bgcolor="#cccccc" align="left" valign="top">
255: <small><tt> $lonhost ($role)</tt></small>
256: </td>
257: </tr>
258: <tr>
259: <td bgcolor="#cccccc" align="left" valign="top">
260: <small><b> Load: </b></small>
261: </td>
262: <td bgcolor="#cccccc" align="left" valign="top">
263: <small><tt> $loadpercent percent</tt></small>
264: </td>
265: </tr>
266: </table>
267: <br />
268: <small>
269: <b> System Administration:</b><br />
270: <tt> $sysadm</tt><br />
271: <b> Server Administration:</b><br />
272: <tt> $servadm</tt>
273: </small>
274: </td>
275:
276: <!-- Row 5 Column 2 -->
277: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" /></td>
278:
279: <!-- Row 5 Column 3 -->
280: <td width="100%" valign="bottom" bgcolor="#ffffff"><img src="$iconpath/litetext.gif" /><img src="$iconpath/lite.gif" /></td>
281:
282: <!-- Row 5 Column 4 -->
283: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" /></td>
284: </tr>
285: <tr>
286:
287: <!-- Row 6 Column 1 -->
288: <td bgcolor="#cccccc"> </td>
289:
290: <!-- Row 6 Column 2 -->
291: <td align="left" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerleft.gif" /></td>
292:
293: <!-- Row 6 Column 3 -->
294: <td background="$iconpath/fillbottom.gif"><img src="$iconpath/fillbottom.gif" /></td>
295:
296: <!-- Row 6 Column 4 -->
297: <td align="right" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerright.gif" /></td>
298: </tr>
299: </table>
300: </body>
301: </html>
302:
303: ENDDOCUMENT
304: return OK;
305: }
306:
307: 1;
308: __END__
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