1: # The LearningOnline Network
2: # Login Screen
3: #
4: # $Id: lonlogin.pm,v 1.17 2002/05/25 21:46:15 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 $r->header_only;
48:
49:
50: &Apache::loncommon::get_unprocessed_cgi
51: ($ENV{'QUERY_STRING'},['interface']);
52:
53: my $fullgraph=($ENV{'form.interface'} ne 'textual');
54:
55: my $iconpath= $r->dir_config('lonIconsURL');
56: my $domain = $r->dir_config('lonDefDomain');
57: my $role = $r->dir_config('lonRole');
58: my $loadlim = $r->dir_config('lonLoadLim');
59: my $servadm = $r->dir_config('lonAdmEMail');
60: my $sysadm = $r->dir_config('lonSysEMail');
61: my $lonhost = $r->dir_config('lonHostID');
62: my $tabdir = $r->dir_config('lonTabDir');
63: my $include = $r->dir_config('lonIncludes');
64:
65: my $loadavg;
66: {
67: my $loadfile=Apache::File->new('/proc/loadavg');
68: $loadavg=<$loadfile>;
69: }
70: $loadavg =~ s/\s.*//g;
71: my $loadpercent=100*$loadavg/$loadlim;
72:
73: my $otherserver='http://'.$ENV{'SERVER_NAME'};
74: my $firsturl=$ENV{'request.firsturl'};
75: # ---------------------------------------- Are we access server and overloaded?
76: if (($role eq 'access') && ($loadpercent>100.0)) {
77: $otherserver=Apache::lonnet::spareserver();
78: }
79:
80: # -------------------------------------------------------- Set login parameters
81:
82: my @hexstr=('0','1','2','3','4','5','6','7',
83: '8','9','a','b','c','d','e','f');
84: my $lkey='';
85: for (0..7) {
86: $lkey.=$hexstr[rand(15)];
87: }
88:
89: my $ukey='';
90: for (0..7) {
91: $ukey.=$hexstr[rand(15)];
92: }
93:
94: my $lextkey=hex($lkey);
95: if ($lextkey>2147483647) { $lextkey-=4294967296; }
96:
97: my $uextkey=hex($ukey);
98: if ($uextkey>2147483647) { $uextkey-=4294967296; }
99:
100: my $logtoken=Apache::lonnet::reply(
101: 'tmpput:'.$ukey.$lkey.'&'.$firsturl,
102: $lonhost);
103:
104: # --------------------------------------------------- Print login screen header
105: $r->print(<<ENDHEADER);
106: <html>
107: <head>
108: <title>The LearningOnline Network with CAPA Login</title>
109: </head>
110: ENDHEADER
111: # ---------------------------------------------------- Serve out DES JavaScript
112: {
113: my $jsh=Apache::File->new($include."/londes.js");
114: $r->print(<$jsh>);
115: }
116: # ---------------------------------------------------------- Serve rest of page
117: $r->print(<<ENDSCRIPT);
118:
119: <body bgcolor="#006600" text="#000000" link="#999999" vlink="#999999"
120: onLoad="init();" topmargin=0 leftmargin=0 marginwidth=0 marginheight=0>
121:
122: <script language="JavaScript">
123: function send()
124: {
125: this.document.server.elements.uname.value
126: =this.document.client.elements.uname.value;
127:
128: this.document.server.elements.udom.value
129: =this.document.client.elements.udom.value;
130:
131: uextkey=this.document.client.elements.uextkey.value;
132: lextkey=this.document.client.elements.lextkey.value;
133: initkeys();
134:
135: this.document.server.elements.upass.value
136: =crypted(this.document.client.elements.upass.value);
137:
138: this.document.server.submit();
139: }
140: </script>
141: ENDSCRIPT
142:
143: if ($fullgraph) {
144: $r->print(
145: '<table width="100%" cellpadding=0 cellspacing=0 border=0>');
146: }
147:
148: $r->print(<<ENDSERVERFORM);
149: <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top">
150: <input type=hidden name=logtoken value="$logtoken">
151: <input type=hidden name=serverid value="$lonhost">
152: <input type=hidden name=interface value="$ENV{'form.interface'}">
153: <input type=hidden name=uname value="">
154: <input type=hidden name=upass value="">
155: <input type=hidden name=udom value="">
156: </form>
157: ENDSERVERFORM
158: if ($fullgraph) { $r->print(<<ENDTOP);
159: <!-- The LON-CAPA Header -->
160: <tr>
161:
162: <!-- Row 1 Columns 2-4 -->
163: <td width="100%" height=75 colspan=4 align="left" valign="top" bgcolor="#006600"><img src="$iconpath/header.gif" border=0 /></td>
164: </tr>
165:
166: <!-- The gray bar that starts the two table frames -->
167: <tr>
168:
169: <!-- Row 2 Column 1 -->
170: <td width=182 height=27 bgcolor="#cccccc"> </td>
171:
172: <!-- Row 2 Column 2 -->
173: <td width=27 height=27 align="left" background="$iconpath/filltop.gif"><img src="$iconpath/upperleft.gif" border=0 /></td>
174:
175: <!-- Row 2 Column 3 -->
176: <td height=27 background="$iconpath/filltop.gif"><img src="$iconpath/filltop.gif" /></td>
177:
178: <!-- Row 2 Column 4 -->
179: <td width=27 height=27 align="right" background="$iconpath/filltop.gif"><img src="$iconpath/upperright.gif" border=0 /></td>
180: </tr>
181: <tr>
182:
183: <!-- A cell that will hold the 'access' and 'about' buttons -->
184: <!-- Row 3 Column 1 -->
185: <td valign="top" height=60 align="center" bgcolor="#cccccc">
186: <a href="/adm/login?interface=textual"><img src="$iconpath/accessbutton.gif" border=0 /></a>
187: <br />
188: <a href="/adm/about.html"><img src="$iconpath/aboutlon.gif" border=0 /></a>
189: </td>
190:
191: <!-- The shaded space between the two main columns -->
192: <!-- Row 3 Column 2 -->
193: <td width=27 height=60 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" /></td>
194:
195: <!-- The right main column holding the large LON-CAPA logo-->
196: <!-- Rows 3-4 Column 3 -->
197: <td align="center" valign="top" width="100%" height="100%" rowspan=2 bgcolor="#ffffff">
198: <center>
199: <img src="$iconpath/loncapalogo.gif" />
200: </center>
201: </td>
202:
203: <!-- Row 3 Column 4 -->
204: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" /></td>
205: </tr>
206: <tr>
207:
208: <!-- The entry form -->
209: <!-- Row 4 Column 1 -->
210: <td align="center" valign="middle" bgcolor="#cccccc">
211: ENDTOP
212: }
213: $r->print(<<ENDLOGIN);
214: <form name="client">
215: <input type="hidden" name="lextkey" value="$lextkey">
216: <input type="hidden" name="uextkey" value="$uextkey">
217:
218: <!-- Start the sub-table for text and input alignment -->
219: <table border=0 cellspacing=0 cellpadding=0>
220: <tr><td bgcolor="#cccccc" colspan=2><img src="$iconpath/userauthentication.gif" /></td></tr>
221: <tr>
222: <td bgcolor="#ffffff"><br /><font size=-1><b> User Name:</b></font></td>
223: <td bgcolor="#ffffff"><br /><input type="text" name="uname" size="10" /></td>
224: </tr>
225: <tr>
226: <td bgcolor="#ffffff"><font size=-1><b> Password:</b></font></td>
227: <td bgcolor="#ffffff"><input type="password" name="upass" size="10" /></td>
228: </tr>
229: <tr>
230: <td bgcolor="#ffffff"><font size=-1><b> Domain:</b></font></td>
231: <td bgcolor="#ffffff"><input type="text" name="udom" size="10" value=$domain /></td>
232: </tr>
233: <tr>
234: <td bgcolor="#ffffff" valign="bottom" align="center" colspan=2>
235: <br />
236: <input type="button" value="Log In" onClick="send();" />
237: </td>
238: </tr>
239: </table>
240: <!-- End sub-table -->
241: </form>
242: ENDLOGIN
243: if ($fullgraph) {
244: $r->print(<<ENDDOCUMENT);
245: </td>
246:
247: <!-- Row 4 Column 2 -->
248: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" /></td>
249:
250: <!-- Row 4 Column 4 -->
251: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" /></td>
252: </tr>
253: <tr>
254:
255: <!-- Row 5 Column 1 -->
256: <td bgcolor="#cccccc" valign="middle" align="left">
257: <br />
258: <table border=0 cellspacing=0 cellpadding=0>
259: <tr>
260: <td bgcolor="#cccccc" align="left" valign="top">
261: <small><b> Domain: </b></small>
262: </td>
263: <td bgcolor="#cccccc" align="left" valign="top">
264: <small><tt> $domain</tt></small>
265: </td>
266: </tr>
267: <tr>
268: <td bgcolor="#cccccc" align="left" valign="top">
269: <small><b> Server: </b></small>
270: </td>
271: <td bgcolor="#cccccc" align="left" valign="top">
272: <small><tt> $lonhost ($role)</tt></small>
273: </td>
274: </tr>
275: <tr>
276: <td bgcolor="#cccccc" align="left" valign="top">
277: <small><b> Load: </b></small>
278: </td>
279: <td bgcolor="#cccccc" align="left" valign="top">
280: <small><tt> $loadpercent percent</tt></small>
281: </td>
282: </tr>
283: </table>
284: <br />
285: <small>
286: <b> System Administration:</b><br />
287: <tt> $sysadm</tt><br />
288: <b> Server Administration:</b><br />
289: <tt> $servadm</tt>
290: </small>
291: </td>
292:
293: <!-- Row 5 Column 2 -->
294: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" /></td>
295:
296: <!-- Row 5 Column 3 -->
297: <td width="100%" valign="bottom" bgcolor="#ffffff"><img src="$iconpath/litetext.gif" /><img src="$iconpath/lite.gif" /></td>
298:
299: <!-- Row 5 Column 4 -->
300: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" /></td>
301: </tr>
302: <tr>
303:
304: <!-- Row 6 Column 1 -->
305: <td bgcolor="#cccccc"> </td>
306:
307: <!-- Row 6 Column 2 -->
308: <td align="left" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerleft.gif" /></td>
309:
310: <!-- Row 6 Column 3 -->
311: <td background="$iconpath/fillbottom.gif"><img src="$iconpath/fillbottom.gif" /></td>
312:
313: <!-- Row 6 Column 4 -->
314: <td align="right" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerright.gif" /></td>
315: </tr>
316: </table>
317:
318: ENDDOCUMENT
319: }
320: $r->print('</body></html>');
321: return OK;
322: }
323:
324: 1;
325: __END__
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