1: # The LearningOnline Network
2: # User Authentication Module
3: #
4: # $Id: lonauth.pm,v 1.30 2002/05/06 21:55:25 matthew 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: # 5/21/99,5/22,5/25,5/26,5/27,5/29,6/2,6/11,6/14,6/15
29: # 16/11,12/16,
30: # 1/14,2/24,2/28,2/29,3/7,5/29,5/30,5/31,6/1,6/5,6/29,
31: # 7/1,7/10,10/2,10/5,10/9,10/26,10/30,11/10,
32: # 05/28,05/29 Gerd Kortemeyer
33: # 07/24 Scott Harrison
34: # 07/28,08/03 Gerd Kortemeyer
35: # 8/15 Scott Harrison
36: # 8/20 Gerd Kortemeyer
37:
38: package Apache::lonauth;
39:
40: use strict;
41: use Apache::Constants qw(:common);
42: use Apache::File;
43: use CGI qw(:standard);
44: use CGI::Cookie();
45: use DynaLoader; # for Crypt::DES version
46: use Crypt::DES;
47: use Apache::lonnet();
48: use Apache::lonmenu();
49: use Fcntl qw(:flock);
50: # ------------------------------------------------------------ Successful login
51:
52: sub success {
53: my ($r, $username, $domain, $authhost,$lowerurl) = @_;
54: my $lonids=$r->dir_config('lonIDsDir');
55:
56: # See if old ID present, if so, remove
57:
58: my $filename;
59: opendir(DIR,$lonids);
60: while ($filename=readdir(DIR)) {
61: if ($filename=~/^$username\_\d+\_$domain\_$authhost\.id$/) {
62: unlink($lonids.'/'.$filename);
63: }
64: }
65: closedir(DIR);
66:
67: # Give them a new cookie
68:
69: my $cookie;
70: my $now=time;
71: $cookie="$username\_$now\_$domain\_$authhost";
72:
73: # Initialize roles
74:
75: my $userroles=Apache::lonnet::rolesinit($domain,$username,$authhost);
76:
77: # ------------------------------------ Check browser type and MathML capability
78:
79: my @browsertype=split(/\&/,$r->dir_config("lonBrowsDet"));
80: my %mathcap=split(/\&/,$r->dir_config("lonMathML"));
81: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
82: my $i;
83: my $clientbrowser='unknown';
84: my $clientversion='0';
85: my $clientmathml='';
86: for ($i=0;$i<=$#browsertype;$i++) {
87: my ($bname,$match,$notmatch,$vreg,$minv)=split(/\:/,$browsertype[$i]);
88: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
89: $clientbrowser=$bname;
90: $httpbrowser=~/$vreg/i;
91: $clientversion=$1;
92: $clientmathml=($clientversion>=$minv);
93: }
94: }
95: my $clientos='unknown';
96: if (($httpbrowser=~/linux/i) ||
97: ($httpbrowser=~/unix/i) ||
98: ($httpbrowser=~/ux/i) ||
99: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
100: if (($httpbrowser=~/vax/i) ||
101: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
102: if ($httpbrowser=~/next/i) { $clientos='next'; }
103: if (($httpbrowser=~/mac/i) ||
104: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
105: if ($httpbrowser=~/win/i) { $clientos='win'; }
106:
107: # ------------------------------------------------------------- Get environment
108:
109: my $userenv=Apache::lonnet::reply("dump:$domain:$username:environment",
110: $authhost);
111: if (($userenv eq 'con_lost') ||
112: ($userenv =~ /^error\:/)) {
113: $userenv='';
114: }
115: $userenv=~s/\&/\nenvironment\./g;
116: if ($userenv ne '') {
117: $userenv='environment.'.$userenv;
118: }
119: # --------------------------------------------------------- Write first profile
120:
121: {
122: my $idf=Apache::File->new(">$lonids/$cookie.id");
123: unless (flock($idf,LOCK_EX)) {
124: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
125: 'Could not obtain exclusive lock in lonauth: '.$!);
126: $idf->close();
127: return 'error: '.$!;
128: }
129: if ($userenv ne '') { print $idf "$userenv\n"; }
130: print $idf "user.name=$username\n";
131: print $idf "user.domain=$domain\n";
132: print $idf "user.home=$authhost\n";
133: print $idf "browser.type=$clientbrowser\n";
134: print $idf "browser.version=$clientversion\n";
135: print $idf "browser.mathml=$clientmathml\n";
136: print $idf "browser.os=$clientos\n";
137: print $idf "request.course.fn=\n";
138: print $idf "request.course.uri=\n";
139: print $idf "request.course.sec=\n";
140: print $idf "request.role=cm\n";
141: print $idf "request.host=$ENV{'HTTP_HOST'}\n";
142: if ($userroles ne '') { print $idf "$userroles"; }
143: $idf->close();
144: }
145: $ENV{'request.role'}='cm';
146: $ENV{'browser.type'}=$clientbrowser;
147: # -------------------------------------------------------------------- Log this
148:
149: &Apache::lonnet::log($domain,$username,$authhost,
150: "Login $ENV{'REMOTE_ADDR'}");
151:
152: # ------------------------------------------------- Check for critical messages
153:
154: my @what=&Apache::lonnet::dump('critical',$domain,$username);
155: if ($what[0]) {
156: if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) {
157: $lowerurl='/adm/email?critical=display';
158: }
159: }
160:
161: # ------------------------------------------------------------ Get cookie ready
162:
163: $cookie="lonID=$cookie; path=/";
164: # -------------------------------------------------------- Menu script and info
165: my $windowinfo=&Apache::lonmenu::open();
166: # ------------------------------------------------------------- Info for Remote
167: my $configmenu=&Apache::lonmenu::rawconfig($r);
168: # ------------------------------------------------- Output for successful login
169:
170: $r->send_cgi_header(<<ENDHEADER);
171: Content-type: text/html
172: Set-cookie: $cookie
173:
174: ENDHEADER
175: $r->print(<<ENDSUCCESS);
176: <html>
177: <head>
178: <title>Successful Login to the LearningOnline Network with CAPA</title>
179: <script>
180:
181: // --------------------------------------------- Checks if server frame defined
182:
183: function checkdef() {
184: if ((menuloaded==0) && (tim==0)) { setTimeout('checkdef()',100); }
185: }
186:
187: // ---------------------------------------------------------- The wait function
188: var canceltim;
189: function wait() {
190: if ((menuloaded==1) || (tim==1)) {
191: if (tim==0) {
192: clearTimeout(canceltim);
193: $configmenu
194: window.location='$lowerurl';
195: } else {
196: alert("Remote Control Timed Out.");
197: }
198: } else {
199: setTimeout('wait();',100);
200: }
201: }
202:
203: function main() {
204: canceltim=setTimeout('tim=1;',80000);
205: checkdef();
206: wait();
207: }
208:
209: </script>
210: </head>
211: <body bgcolor="#FFFFFF">
212: <script>
213: menuloaded=0;
214: tim=0;
215: </script>
216: $windowinfo
217: <h1>Welcome!</h1>
218: <script>
219: main();
220: </script>
221: </body>
222: </html>
223: ENDSUCCESS
224: }
225:
226: # --------------------------------------------------------------- Failed login!
227:
228: sub failed {
229: my ($r,$message) = @_;
230: $r->send_cgi_header(<<ENDFHEADER);
231: Content-type: text/html
232:
233: ENDFHEADER
234: $r->print(<<ENDFAILED);
235: <html>
236: <head>
237: <title>Unsuccessful Login to the LearningOnline Network with CAPA</title>
238: </head>
239: <html>
240: <body bgcolor="#FFFFFF">
241: <h1>Sorry ...</h1>
242: <h2>$message to use the Learning<i>Online</i> Network with CAPA</h2>
243: </body>
244: </html>
245: ENDFAILED
246: }
247:
248: # ---------------------------------------------------------------- Main handler
249:
250: sub handler {
251: my $r = shift;
252:
253: my $buffer;
254: $r->read($buffer,$r->header_in('Content-length'));
255: my @pairs=split(/&/,$buffer);
256: my $pair; my $name; my $value; my %FORM;
257: foreach $pair (@pairs) {
258: ($name,$value) = split(/=/,$pair);
259: $value =~ tr/+/ /;
260: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
261: $FORM{$name}=$value;
262: }
263:
264: if ((!$FORM{'uname'}) || (!$FORM{'upass'}) || (!$FORM{'udom'})) {
265: failed($r,'Username, password and domain need to be specified');
266: return OK;
267: }
268: $FORM{'uname'} =~ s/\W//g;
269: $FORM{'udom'} =~ s/\W//g;
270:
271: my $role = $r->dir_config('lonRole');
272: my $domain = $r->dir_config('lonDefDomain');
273: my $prodir = $r->dir_config('lonUsersDir');
274:
275: # ---------------------------------------- Get the information from login token
276:
277: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$FORM{'logtoken'},
278: $FORM{'serverid'});
279:
280: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
281: failed($r,'Login token missing, inaccessible or expired');
282: return OK;
283: }
284:
285: my ($key,$firsturl)=split(/&/,$tmpinfo);
286:
287: my $keybin=pack("H16",$key);
288:
289: my $cipher;
290: if ($Crypt::DES::VERSION>=2.03) {
291: $cipher=new Crypt::DES $keybin;
292: }
293: else {
294: $cipher=new DES $keybin;
295: }
296:
297: my $upass=$cipher->decrypt(
298: unpack("a8",pack("H16",substr($FORM{'upass'},0,16))));
299:
300: $upass.=$cipher->decrypt(
301: unpack("a8",pack("H16",substr($FORM{'upass'},16,16))));
302:
303: $upass=substr($upass,1,ord(substr($upass,0,1)));
304:
305: # ---------------------------------------------------------------- Authenticate
306: my $authhost=Apache::lonnet::authenticate($FORM{'uname'},
307: $upass,
308: $FORM{'udom'});
309:
310: # --------------------------------------------------------------------- Failed?
311:
312: if ($authhost eq 'no_host') {
313: failed($r,'Username and/or password could not be authenticated');
314: return OK;
315: }
316:
317: if (($firsturl eq '') || ($firsturl eq '/adm/logout')) {
318: $firsturl='/adm/roles';
319: }
320:
321: success($r,$FORM{'uname'},$FORM{'udom'},$authhost,$firsturl);
322: return OK;
323: }
324:
325: 1;
326: __END__
327:
328:
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