1: # The LearningOnline Network
2: # User Authentication Module
3: #
4: # $Id: lonauth.pm,v 1.31 2002/05/29 14:51:42 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: # 5/21/99,5/22,5/25,5/26,5/27,5/29,6/2,6/11,6/14,6/15
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) { $clientos='win'; }
106: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
107:
108: # ------------------------------------------------------------- Get environment
109:
110: my $userenv=Apache::lonnet::reply("dump:$domain:$username:environment",
111: $authhost);
112: if (($userenv eq 'con_lost') ||
113: ($userenv =~ /^error\:/)) {
114: $userenv='';
115: }
116: $userenv=~s/\&/\nenvironment\./g;
117: if ($userenv ne '') {
118: $userenv='environment.'.$userenv;
119: }
120: # --------------------------------------------------------- Write first profile
121:
122: {
123: my $idf=Apache::File->new(">$lonids/$cookie.id");
124: unless (flock($idf,LOCK_EX)) {
125: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
126: 'Could not obtain exclusive lock in lonauth: '.$!);
127: $idf->close();
128: return 'error: '.$!;
129: }
130: if ($userenv ne '') { print $idf "$userenv\n"; }
131: print $idf "user.name=$username\n";
132: print $idf "user.domain=$domain\n";
133: print $idf "user.home=$authhost\n";
134: print $idf "browser.type=$clientbrowser\n";
135: print $idf "browser.version=$clientversion\n";
136: print $idf "browser.mathml=$clientmathml\n";
137: print $idf "browser.os=$clientos\n";
138: print $idf "request.course.fn=\n";
139: print $idf "request.course.uri=\n";
140: print $idf "request.course.sec=\n";
141: print $idf "request.role=cm\n";
142: print $idf "request.host=$ENV{'HTTP_HOST'}\n";
143: if ($userroles ne '') { print $idf "$userroles"; }
144: $idf->close();
145: }
146: $ENV{'request.role'}='cm';
147: $ENV{'browser.type'}=$clientbrowser;
148: # -------------------------------------------------------------------- Log this
149:
150: &Apache::lonnet::log($domain,$username,$authhost,
151: "Login $ENV{'REMOTE_ADDR'}");
152:
153: # ------------------------------------------------- Check for critical messages
154:
155: my @what=&Apache::lonnet::dump('critical',$domain,$username);
156: if ($what[0]) {
157: if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) {
158: $lowerurl='/adm/email?critical=display';
159: }
160: }
161:
162: # ------------------------------------------------------------ Get cookie ready
163:
164: $cookie="lonID=$cookie; path=/";
165: # -------------------------------------------------------- Menu script and info
166: my $windowinfo=&Apache::lonmenu::open($clientos);
167: # ------------------------------------------------------------- Info for Remote
168: my $configmenu=&Apache::lonmenu::rawconfig($r);
169: # ------------------------------------------------- Output for successful login
170:
171: $r->send_cgi_header(<<ENDHEADER);
172: Content-type: text/html
173: Set-cookie: $cookie
174:
175: ENDHEADER
176: $r->print(<<ENDSUCCESS);
177: <html>
178: <head>
179: <title>Successful Login to the LearningOnline Network with CAPA</title>
180: <script>
181:
182: // --------------------------------------------- Checks if server frame defined
183:
184: function checkdef() {
185: if ((menuloaded==0) && (tim==0)) { setTimeout('checkdef()',100); }
186: }
187:
188: // ---------------------------------------------------------- The wait function
189: var canceltim;
190: function wait() {
191: if ((menuloaded==1) || (tim==1)) {
192: if (tim==0) {
193: clearTimeout(canceltim);
194: $configmenu
195: window.location='$lowerurl';
196: } else {
197: alert("Remote Control Timed Out.");
198: }
199: } else {
200: setTimeout('wait();',100);
201: }
202: }
203:
204: function main() {
205: canceltim=setTimeout('tim=1;',80000);
206: checkdef();
207: wait();
208: }
209:
210: </script>
211: </head>
212: <body bgcolor="#FFFFFF">
213: <script>
214: menuloaded=0;
215: tim=0;
216: </script>
217: $windowinfo
218: <h1>Welcome!</h1>
219: <script>
220: main();
221: </script>
222: </body>
223: </html>
224: ENDSUCCESS
225: }
226:
227: # --------------------------------------------------------------- Failed login!
228:
229: sub failed {
230: my ($r,$message) = @_;
231: $r->send_cgi_header(<<ENDFHEADER);
232: Content-type: text/html
233:
234: ENDFHEADER
235: $r->print(<<ENDFAILED);
236: <html>
237: <head>
238: <title>Unsuccessful Login to the LearningOnline Network with CAPA</title>
239: </head>
240: <html>
241: <body bgcolor="#FFFFFF">
242: <h1>Sorry ...</h1>
243: <h2>$message to use the Learning<i>Online</i> Network with CAPA</h2>
244: </body>
245: </html>
246: ENDFAILED
247: }
248:
249: # ---------------------------------------------------------------- Main handler
250:
251: sub handler {
252: my $r = shift;
253:
254: my $buffer;
255: $r->read($buffer,$r->header_in('Content-length'));
256: my @pairs=split(/&/,$buffer);
257: my $pair; my $name; my $value; my %FORM;
258: foreach $pair (@pairs) {
259: ($name,$value) = split(/=/,$pair);
260: $value =~ tr/+/ /;
261: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
262: $FORM{$name}=$value;
263: }
264:
265: if ((!$FORM{'uname'}) || (!$FORM{'upass'}) || (!$FORM{'udom'})) {
266: failed($r,'Username, password and domain need to be specified');
267: return OK;
268: }
269: $FORM{'uname'} =~ s/\W//g;
270: $FORM{'udom'} =~ s/\W//g;
271:
272: my $role = $r->dir_config('lonRole');
273: my $domain = $r->dir_config('lonDefDomain');
274: my $prodir = $r->dir_config('lonUsersDir');
275:
276: # ---------------------------------------- Get the information from login token
277:
278: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$FORM{'logtoken'},
279: $FORM{'serverid'});
280:
281: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
282: failed($r,'Login token missing, inaccessible or expired');
283: return OK;
284: }
285:
286: my ($key,$firsturl)=split(/&/,$tmpinfo);
287:
288: my $keybin=pack("H16",$key);
289:
290: my $cipher;
291: if ($Crypt::DES::VERSION>=2.03) {
292: $cipher=new Crypt::DES $keybin;
293: }
294: else {
295: $cipher=new DES $keybin;
296: }
297:
298: my $upass=$cipher->decrypt(
299: unpack("a8",pack("H16",substr($FORM{'upass'},0,16))));
300:
301: $upass.=$cipher->decrypt(
302: unpack("a8",pack("H16",substr($FORM{'upass'},16,16))));
303:
304: $upass=substr($upass,1,ord(substr($upass,0,1)));
305:
306: # ---------------------------------------------------------------- Authenticate
307: my $authhost=Apache::lonnet::authenticate($FORM{'uname'},
308: $upass,
309: $FORM{'udom'});
310:
311: # --------------------------------------------------------------------- Failed?
312:
313: if ($authhost eq 'no_host') {
314: failed($r,'Username and/or password could not be authenticated');
315: return OK;
316: }
317:
318: if (($firsturl eq '') || ($firsturl eq '/adm/logout')) {
319: $firsturl='/adm/roles';
320: }
321:
322: success($r,$FORM{'uname'},$FORM{'udom'},$authhost,$firsturl);
323: return OK;
324: }
325:
326: 1;
327: __END__
328:
329:
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