1: # The LearningOnline Network
2: # Login Screen
3: #
4: # $Id: lonlogin.pm,v 1.18 2002/05/25 22:15:03 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: $ENV{'form.interface'}=~s/\W//g;
54:
55: my $fullgraph=($ENV{'form.interface'} ne 'textual');
56:
57: my $iconpath= $r->dir_config('lonIconsURL');
58: my $domain = $r->dir_config('lonDefDomain');
59: my $role = $r->dir_config('lonRole');
60: my $loadlim = $r->dir_config('lonLoadLim');
61: my $servadm = $r->dir_config('lonAdmEMail');
62: my $sysadm = $r->dir_config('lonSysEMail');
63: my $lonhost = $r->dir_config('lonHostID');
64: my $tabdir = $r->dir_config('lonTabDir');
65: my $include = $r->dir_config('lonIncludes');
66:
67: my $loadavg;
68: {
69: my $loadfile=Apache::File->new('/proc/loadavg');
70: $loadavg=<$loadfile>;
71: }
72: $loadavg =~ s/\s.*//g;
73: my $loadpercent=100*$loadavg/$loadlim;
74:
75: my $otherserver='http://'.$ENV{'SERVER_NAME'};
76: my $firsturl=$ENV{'request.firsturl'};
77: # ---------------------------------------- Are we access server and overloaded?
78: if (($role eq 'access') && ($loadpercent>100.0)) {
79: $otherserver=Apache::lonnet::spareserver();
80: }
81:
82: # -------------------------------------------------------- Set login parameters
83:
84: my @hexstr=('0','1','2','3','4','5','6','7',
85: '8','9','a','b','c','d','e','f');
86: my $lkey='';
87: for (0..7) {
88: $lkey.=$hexstr[rand(15)];
89: }
90:
91: my $ukey='';
92: for (0..7) {
93: $ukey.=$hexstr[rand(15)];
94: }
95:
96: my $lextkey=hex($lkey);
97: if ($lextkey>2147483647) { $lextkey-=4294967296; }
98:
99: my $uextkey=hex($ukey);
100: if ($uextkey>2147483647) { $uextkey-=4294967296; }
101:
102: my $logtoken=Apache::lonnet::reply(
103: 'tmpput:'.$ukey.$lkey.'&'.$firsturl,
104: $lonhost);
105:
106: # --------------------------------------------------- Print login screen header
107: $r->print(<<ENDHEADER);
108: <html>
109: <head>
110: <title>The LearningOnline Network with CAPA Login</title>
111: </head>
112: ENDHEADER
113: # ---------------------------------------------------- Serve out DES JavaScript
114: {
115: my $jsh=Apache::File->new($include."/londes.js");
116: $r->print(<$jsh>);
117: }
118: # ---------------------------------------------------------- Serve rest of page
119: $r->print(<<ENDSCRIPT);
120:
121: <body bgcolor="#006600" text="#000000" link="#999999" vlink="#999999"
122: onLoad="init();" topmargin=0 leftmargin=0 marginwidth=0 marginheight=0>
123:
124: <script language="JavaScript">
125: function send()
126: {
127: this.document.server.elements.uname.value
128: =this.document.client.elements.uname.value;
129:
130: this.document.server.elements.udom.value
131: =this.document.client.elements.udom.value;
132:
133: uextkey=this.document.client.elements.uextkey.value;
134: lextkey=this.document.client.elements.lextkey.value;
135: initkeys();
136:
137: this.document.server.elements.upass.value
138: =crypted(this.document.client.elements.upass.value);
139:
140: this.document.server.submit();
141: }
142: </script>
143: ENDSCRIPT
144:
145: if ($fullgraph) {
146: $r->print(
147: '<table width="100%" cellpadding=0 cellspacing=0 border=0>');
148: }
149:
150: $r->print(<<ENDSERVERFORM);
151: <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top">
152: <input type=hidden name=logtoken value="$logtoken">
153: <input type=hidden name=serverid value="$lonhost">
154: <input type=hidden name=interface value="$ENV{'form.interface'}">
155: <input type=hidden name=uname value="">
156: <input type=hidden name=upass value="">
157: <input type=hidden name=udom value="">
158: </form>
159: ENDSERVERFORM
160: if ($fullgraph) { $r->print(<<ENDTOP);
161: <!-- The LON-CAPA Header -->
162: <tr>
163:
164: <!-- Row 1 Columns 2-4 -->
165: <td width="100%" height=75 colspan=4 align="left" valign="top" bgcolor="#006600"><img src="$iconpath/header.gif" border=0 /></td>
166: </tr>
167:
168: <!-- The gray bar that starts the two table frames -->
169: <tr>
170:
171: <!-- Row 2 Column 1 -->
172: <td width=182 height=27 bgcolor="#cccccc"> </td>
173:
174: <!-- Row 2 Column 2 -->
175: <td width=27 height=27 align="left" background="$iconpath/filltop.gif"><img src="$iconpath/upperleft.gif" border=0 /></td>
176:
177: <!-- Row 2 Column 3 -->
178: <td height=27 background="$iconpath/filltop.gif"><img src="$iconpath/filltop.gif" /></td>
179:
180: <!-- Row 2 Column 4 -->
181: <td width=27 height=27 align="right" background="$iconpath/filltop.gif"><img src="$iconpath/upperright.gif" border=0 /></td>
182: </tr>
183: <tr>
184:
185: <!-- A cell that will hold the 'access' and 'about' buttons -->
186: <!-- Row 3 Column 1 -->
187: <td valign="top" height=60 align="center" bgcolor="#cccccc">
188: <a href="/adm/login?interface=textual"><img src="$iconpath/accessbutton.gif" border=0 /></a>
189: <br />
190: <a href="/adm/about.html"><img src="$iconpath/aboutlon.gif" border=0 /></a>
191: </td>
192:
193: <!-- The shaded space between the two main columns -->
194: <!-- Row 3 Column 2 -->
195: <td width=27 height=60 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" /></td>
196:
197: <!-- The right main column holding the large LON-CAPA logo-->
198: <!-- Rows 3-4 Column 3 -->
199: <td align="center" valign="top" width="100%" height="100%" rowspan=2 bgcolor="#ffffff">
200: <center>
201: <img src="$iconpath/loncapalogo.gif" />
202: </center>
203: </td>
204:
205: <!-- Row 3 Column 4 -->
206: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" /></td>
207: </tr>
208: <tr>
209:
210: <!-- The entry form -->
211: <!-- Row 4 Column 1 -->
212: <td align="center" valign="middle" bgcolor="#cccccc">
213: ENDTOP
214: }
215: $r->print(<<ENDLOGIN);
216: <form name="client">
217: <input type="hidden" name="lextkey" value="$lextkey">
218: <input type="hidden" name="uextkey" value="$uextkey">
219:
220: <!-- Start the sub-table for text and input alignment -->
221: <table border=0 cellspacing=0 cellpadding=0>
222: <tr><td bgcolor="#cccccc" colspan=2><img src="$iconpath/userauthentication.gif" /></td></tr>
223: <tr>
224: <td bgcolor="#ffffff"><br /><font size=-1><b> User Name:</b></font></td>
225: <td bgcolor="#ffffff"><br /><input type="text" name="uname" size="10" /></td>
226: </tr>
227: <tr>
228: <td bgcolor="#ffffff"><font size=-1><b> Password:</b></font></td>
229: <td bgcolor="#ffffff"><input type="password" name="upass" size="10" /></td>
230: </tr>
231: <tr>
232: <td bgcolor="#ffffff"><font size=-1><b> Domain:</b></font></td>
233: <td bgcolor="#ffffff"><input type="text" name="udom" size="10" value=$domain /></td>
234: </tr>
235: <tr>
236: <td bgcolor="#ffffff" valign="bottom" align="center" colspan=2>
237: <br />
238: <input type="button" value="Log In" onClick="send();" />
239: </td>
240: </tr>
241: </table>
242: <!-- End sub-table -->
243: </form>
244: ENDLOGIN
245: if ($fullgraph) {
246: $r->print(<<ENDDOCUMENT);
247: </td>
248:
249: <!-- Row 4 Column 2 -->
250: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" /></td>
251:
252: <!-- Row 4 Column 4 -->
253: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" /></td>
254: </tr>
255: <tr>
256:
257: <!-- Row 5 Column 1 -->
258: <td bgcolor="#cccccc" valign="middle" align="left">
259: <br />
260: <table border=0 cellspacing=0 cellpadding=0>
261: <tr>
262: <td bgcolor="#cccccc" align="left" valign="top">
263: <small><b> Domain: </b></small>
264: </td>
265: <td bgcolor="#cccccc" align="left" valign="top">
266: <small><tt> $domain</tt></small>
267: </td>
268: </tr>
269: <tr>
270: <td bgcolor="#cccccc" align="left" valign="top">
271: <small><b> Server: </b></small>
272: </td>
273: <td bgcolor="#cccccc" align="left" valign="top">
274: <small><tt> $lonhost ($role)</tt></small>
275: </td>
276: </tr>
277: <tr>
278: <td bgcolor="#cccccc" align="left" valign="top">
279: <small><b> Load: </b></small>
280: </td>
281: <td bgcolor="#cccccc" align="left" valign="top">
282: <small><tt> $loadpercent percent</tt></small>
283: </td>
284: </tr>
285: </table>
286: <br />
287: <small>
288: <b> System Administration:</b><br />
289: <tt> $sysadm</tt><br />
290: <b> Server Administration:</b><br />
291: <tt> $servadm</tt>
292: </small>
293: </td>
294:
295: <!-- Row 5 Column 2 -->
296: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" /></td>
297:
298: <!-- Row 5 Column 3 -->
299: <td width="100%" valign="bottom" bgcolor="#ffffff"><img src="$iconpath/litetext.gif" /><img src="$iconpath/lite.gif" /></td>
300:
301: <!-- Row 5 Column 4 -->
302: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" /></td>
303: </tr>
304: <tr>
305:
306: <!-- Row 6 Column 1 -->
307: <td bgcolor="#cccccc"> </td>
308:
309: <!-- Row 6 Column 2 -->
310: <td align="left" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerleft.gif" /></td>
311:
312: <!-- Row 6 Column 3 -->
313: <td background="$iconpath/fillbottom.gif"><img src="$iconpath/fillbottom.gif" /></td>
314:
315: <!-- Row 6 Column 4 -->
316: <td align="right" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerright.gif" /></td>
317: </tr>
318: </table>
319:
320: ENDDOCUMENT
321: }
322: $r->print('</body></html>');
323: return OK;
324: }
325:
326: 1;
327: __END__
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