1: # The LearningOnline Network
2: # User Authentication Module
3: #
4: # $Id: lonauth.pm,v 1.40 2003/02/20 01:35:27 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: # 07/28,08/03 Gerd Kortemeyer
34: # 8/20 Gerd Kortemeyer
35:
36: package Apache::lonauth;
37:
38: use strict;
39: use Apache::Constants qw(:common);
40: use Apache::File;
41: use CGI qw(:standard);
42: use CGI::Cookie();
43: use DynaLoader; # for Crypt::DES version
44: use Crypt::DES;
45: use Apache::lonnet();
46: use Apache::lonmenu();
47: use Fcntl qw(:flock);
48:
49: my %FORM;
50:
51: # ------------------------------------------------------------ Successful login
52:
53: sub success {
54: my ($r, $username, $domain, $authhost,$lowerurl) = @_;
55: my $lonids=$r->dir_config('lonIDsDir');
56:
57: # See if old ID present, if so, remove
58:
59: my $filename;
60: opendir(DIR,$lonids);
61: while ($filename=readdir(DIR)) {
62: if ($filename=~/^$username\_\d+\_$domain\_$authhost\.id$/) {
63: unlink($lonids.'/'.$filename);
64: }
65: }
66: closedir(DIR);
67:
68: # Give them a new cookie
69:
70: my $cookie;
71: my $now=time;
72: $cookie="$username\_$now\_$domain\_$authhost";
73:
74: # Initialize roles
75:
76: my $userroles=Apache::lonnet::rolesinit($domain,$username,$authhost);
77:
78: # ------------------------------------ Check browser type and MathML capability
79:
80: my @browsertype=split(/\&/,$r->dir_config("lonBrowsDet"));
81: my %mathcap=split(/\&/,$r->dir_config("lonMathML"));
82: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
83: my $i;
84: my $clientbrowser='unknown';
85: my $clientversion='0';
86: my $clientmathml='';
87: my $clientunicode='0';
88: for ($i=0;$i<=$#browsertype;$i++) {
89: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
90: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
91: $clientbrowser=$bname;
92: $httpbrowser=~/$vreg/i;
93: $clientversion=$1;
94: $clientmathml=($clientversion>=$minv);
95: $clientunicode=($clientversion>=$univ);
96: }
97: }
98: my $clientos='unknown';
99: if (($httpbrowser=~/linux/i) ||
100: ($httpbrowser=~/unix/i) ||
101: ($httpbrowser=~/ux/i) ||
102: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
103: if (($httpbrowser=~/vax/i) ||
104: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
105: if ($httpbrowser=~/next/i) { $clientos='next'; }
106: if (($httpbrowser=~/mac/i) ||
107: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
108: if ($httpbrowser=~/win/i) { $clientos='win'; }
109: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
110:
111: # -------------------------------------- Any accessibility options to remember?
112: if (($FORM{'interface'}) && ($FORM{'remember'} eq 'true')) {
113: foreach ('imagesuppress','appletsuppress',
114: 'embedsuppress','fontenhance','blackwhite') {
115: if ($FORM{$_} eq 'true') {
116: &Apache::lonnet::put('environment',{$_ => 'on'},$domain,$username);
117: } else {
118: &Apache::lonnet::del('environment',[$_],$domain,$username);
119: }
120: }
121: }
122: # ------------------------------------------------------------- Get environment
123:
124: my $userenv;
125: my %userenv=Apache::lonnet::dump('environment',$domain,$username);
126: my ($tmp) = keys(%userenv);
127: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
128: foreach my $key (keys(%userenv)) {
129: $userenv.="environment.$key=$userenv{$key}\n";
130: }
131: }
132: if (($userenv{'interface'}) && (!$FORM{'interface'})) {
133: $FORM{'interface'}=$userenv{'interface'};
134: }
135: # --------------------------------------------------------- Write first profile
136:
137: {
138: my $idf=Apache::File->new(">$lonids/$cookie.id");
139: unless (flock($idf,LOCK_EX)) {
140: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
141: 'Could not obtain exclusive lock in lonauth: '.$!);
142: $idf->close();
143: return 'error: '.$!;
144: }
145: if ($userenv ne '') { print $idf "$userenv\n"; }
146: print $idf "user.name=$username\n";
147: print $idf "user.domain=$domain\n";
148: print $idf "user.home=$authhost\n";
149: print $idf "browser.type=$clientbrowser\n";
150: print $idf "browser.version=$clientversion\n";
151: print $idf "browser.mathml=$clientmathml\n";
152: print $idf "browser.unicode=$clientunicode\n";
153: print $idf "browser.os=$clientos\n";
154: print $idf "request.course.fn=\n";
155: print $idf "request.course.uri=\n";
156: print $idf "request.course.sec=\n";
157: print $idf "request.role=cm\n";
158: print $idf "request.host=$ENV{'HTTP_HOST'}\n";
159: if ($FORM{'interface'}) {
160: $FORM{'interface'}=~s/\W//gs;
161: print $idf "browser.interface=$FORM{'interface'}\n";
162: $ENV{'browser.interface'}=$FORM{'interface'};
163: foreach
164: ('imagesuppress','appletsuppress',
165: 'embedsuppress','fontenhance','blackwhite') {
166: if (($FORM{$_} eq 'true') ||
167: ($userenv{$_} eq 'on')) {
168: print $idf "browser.$_=on\n";
169: }
170:
171: }
172: }
173: if ($userroles ne '') { print $idf "$userroles"; }
174: $idf->close();
175: }
176: $ENV{'request.role'}='cm';
177: $ENV{'browser.type'}=$clientbrowser;
178: # -------------------------------------------------------------------- Log this
179:
180: &Apache::lonnet::log($domain,$username,$authhost,
181: "Login $ENV{'REMOTE_ADDR'}");
182:
183: # ------------------------------------------------- Check for critical messages
184:
185: my @what=&Apache::lonnet::dump('critical',$domain,$username);
186: if ($what[0]) {
187: if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) {
188: $lowerurl='/adm/email?critical=display';
189: }
190: }
191:
192: # ------------------------------------------------------------ Get cookie ready
193:
194: $cookie="lonID=$cookie; path=/";
195: # -------------------------------------------------------- Menu script and info
196: my $windowinfo=&Apache::lonmenu::open($clientos);
197: my $startupremote=&Apache::lonmenu::startupremote($lowerurl);
198: my $setflags=&Apache::lonmenu::setflags();
199: my $maincall=&Apache::lonmenu::maincall();
200: # ------------------------------------------------- Output for successful login
201:
202: $r->send_cgi_header(<<ENDHEADER);
203: Content-type: text/html
204: Set-cookie: $cookie
205:
206: ENDHEADER
207: $r->print(<<ENDSUCCESS);
208: <html>
209: <head>
210: <title>Successful Login to the LearningOnline Network with CAPA</title>
211: $startupremote
212: </head>
213: <body bgcolor="#FFFFFF">
214: $setflags
215: $windowinfo
216: <h1>Welcome!</h1>
217: Welcome to the Learning<i>Online</i> Network with CAPA.
218: Please wait while your session
219: is being set up.<p>
220: <a href="/adm/loginproblems.html">Problems?</a></p>
221: $maincall
222: </body>
223: </html>
224: ENDSUCCESS
225: }
226:
227: # --------------------------------------------------------------- Failed login!
228:
229: sub failed {
230: my ($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;
258: undef %FORM;
259: %FORM=();
260: foreach $pair (@pairs) {
261: ($name,$value) = split(/=/,$pair);
262: $value =~ tr/+/ /;
263: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
264: $FORM{$name}=$value;
265: }
266:
267: if ((!$FORM{'uname'}) || (!$FORM{'upass'}) || (!$FORM{'udom'})) {
268: failed($r,'Username, password and domain need to be specified');
269: return OK;
270: }
271: $FORM{'uname'} =~ s/\W//g;
272: $FORM{'udom'} =~ s/\W//g;
273:
274: my $role = $r->dir_config('lonRole');
275: my $domain = $r->dir_config('lonDefDomain');
276: my $prodir = $r->dir_config('lonUsersDir');
277:
278: # ---------------------------------------- Get the information from login token
279:
280: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$FORM{'logtoken'},
281: $FORM{'serverid'});
282:
283: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
284: failed($r,'Login token missing, inaccessible or expired');
285: return OK;
286: }
287:
288: my ($key,$firsturl)=split(/&/,$tmpinfo);
289:
290: my $keybin=pack("H16",$key);
291:
292: my $cipher;
293: if ($Crypt::DES::VERSION>=2.03) {
294: $cipher=new Crypt::DES $keybin;
295: }
296: else {
297: $cipher=new DES $keybin;
298: }
299:
300: my $upass=$cipher->decrypt(
301: unpack("a8",pack("H16",substr($FORM{'upass'},0,16))));
302:
303: $upass.=$cipher->decrypt(
304: unpack("a8",pack("H16",substr($FORM{'upass'},16,16))));
305:
306: $upass=substr($upass,1,ord(substr($upass,0,1)));
307:
308: # ---------------------------------------------------------------- Authenticate
309: my $authhost=Apache::lonnet::authenticate($FORM{'uname'},
310: $upass,
311: $FORM{'udom'});
312:
313: # --------------------------------------------------------------------- Failed?
314:
315: if ($authhost eq 'no_host') {
316: failed($r,'Username and/or password could not be authenticated');
317: return OK;
318: }
319:
320: if (($firsturl eq '') || ($firsturl eq '/adm/logout')) {
321: $firsturl='/adm/roles';
322: }
323:
324: success($r,$FORM{'uname'},$FORM{'udom'},$authhost,$firsturl);
325: return OK;
326: }
327:
328: 1;
329: __END__
330:
331:
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