1: # The LearningOnline Network
2: # User Authentication Module
3: #
4: # $Id: lonauth.pm,v 1.41 2003/02/20 06:49:23 albertel 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'},
117: $domain,$username);
118: } else {
119: &Apache::lonnet::del('environment',[$_],$domain,$username);
120: }
121: }
122: }
123: # ------------------------------------------------------------- Get environment
124:
125: my $userenv;
126: my %userenv=Apache::lonnet::dump('environment',$domain,$username);
127: my ($tmp) = keys(%userenv);
128: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
129: foreach my $key (keys(%userenv)) {
130: $userenv.="environment.$key=$userenv{$key}\n";
131: }
132: }
133: if (($userenv{'interface'}) && (!$FORM{'interface'})) {
134: $FORM{'interface'}=$userenv{'interface'};
135: }
136: # --------------------------------------------------------- Write first profile
137:
138: {
139: my $idf=Apache::File->new(">$lonids/$cookie.id");
140: unless (flock($idf,LOCK_EX)) {
141: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
142: 'Could not obtain exclusive lock in lonauth: '.$!);
143: $idf->close();
144: return 'error: '.$!;
145: }
146: if ($userenv ne '') { print $idf "$userenv\n"; }
147: print $idf "user.name=$username\n";
148: print $idf "user.domain=$domain\n";
149: print $idf "user.home=$authhost\n";
150: print $idf "browser.type=$clientbrowser\n";
151: print $idf "browser.version=$clientversion\n";
152: print $idf "browser.mathml=$clientmathml\n";
153: print $idf "browser.unicode=$clientunicode\n";
154: print $idf "browser.os=$clientos\n";
155: print $idf "request.course.fn=\n";
156: print $idf "request.course.uri=\n";
157: print $idf "request.course.sec=\n";
158: print $idf "request.role=cm\n";
159: print $idf "request.host=$ENV{'HTTP_HOST'}\n";
160: if ($FORM{'interface'}) {
161: $FORM{'interface'}=~s/\W//gs;
162: print $idf "browser.interface=$FORM{'interface'}\n";
163: $ENV{'browser.interface'}=$FORM{'interface'};
164: foreach ('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: if ($userroles ne '') { print $idf "$userroles"; }
173: $idf->close();
174: }
175: $ENV{'request.role'}='cm';
176: $ENV{'browser.type'}=$clientbrowser;
177: # -------------------------------------------------------------------- Log this
178:
179: &Apache::lonnet::log($domain,$username,$authhost,
180: "Login $ENV{'REMOTE_ADDR'}");
181:
182: # ------------------------------------------------- Check for critical messages
183:
184: my @what=&Apache::lonnet::dump('critical',$domain,$username);
185: if ($what[0]) {
186: if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) {
187: $lowerurl='/adm/email?critical=display';
188: }
189: }
190:
191: # ------------------------------------------------------------ Get cookie ready
192:
193: $cookie="lonID=$cookie; path=/";
194: # -------------------------------------------------------- Menu script and info
195: my $windowinfo=&Apache::lonmenu::open($clientos);
196: my $startupremote=&Apache::lonmenu::startupremote($lowerurl);
197: my $setflags=&Apache::lonmenu::setflags();
198: my $maincall=&Apache::lonmenu::maincall();
199: # ------------------------------------------------- Output for successful login
200:
201: $r->send_cgi_header(<<ENDHEADER);
202: Content-type: text/html
203: Set-cookie: $cookie
204:
205: ENDHEADER
206: $r->print(<<ENDSUCCESS);
207: <html>
208: <head>
209: <title>Successful Login to the LearningOnline Network with CAPA</title>
210: $startupremote
211: </head>
212: <body bgcolor="#FFFFFF">
213: $setflags
214: $windowinfo
215: <h1>Welcome!</h1>
216: Welcome to the Learning<i>Online</i> Network with CAPA.
217: Please wait while your session
218: is being set up.<p>
219: <a href="/adm/loginproblems.html">Problems?</a></p>
220: $maincall
221: </body>
222: </html>
223: ENDSUCCESS
224: }
225:
226: # --------------------------------------------------------------- Failed login!
227:
228: sub failed {
229: my ($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;
257: undef %FORM;
258: %FORM=();
259: foreach $pair (@pairs) {
260: ($name,$value) = split(/=/,$pair);
261: $value =~ tr/+/ /;
262: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
263: $FORM{$name}=$value;
264: }
265:
266: if ((!$FORM{'uname'}) || (!$FORM{'upass'}) || (!$FORM{'udom'})) {
267: failed($r,'Username, password and domain need to be specified');
268: return OK;
269: }
270: $FORM{'uname'} =~ s/\W//g;
271: $FORM{'udom'} =~ s/\W//g;
272:
273: my $role = $r->dir_config('lonRole');
274: my $domain = $r->dir_config('lonDefDomain');
275: my $prodir = $r->dir_config('lonUsersDir');
276:
277: # ---------------------------------------- Get the information from login token
278:
279: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$FORM{'logtoken'},
280: $FORM{'serverid'});
281:
282: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
283: failed($r,'Login token missing, inaccessible or expired');
284: return OK;
285: }
286:
287: my ($key,$firsturl)=split(/&/,$tmpinfo);
288:
289: my $keybin=pack("H16",$key);
290:
291: my $cipher;
292: if ($Crypt::DES::VERSION>=2.03) {
293: $cipher=new Crypt::DES $keybin;
294: }
295: else {
296: $cipher=new DES $keybin;
297: }
298:
299: my $upass=$cipher->decrypt(
300: unpack("a8",pack("H16",substr($FORM{'upass'},0,16))));
301:
302: $upass.=$cipher->decrypt(
303: unpack("a8",pack("H16",substr($FORM{'upass'},16,16))));
304:
305: $upass=substr($upass,1,ord(substr($upass,0,1)));
306:
307: # ---------------------------------------------------------------- Authenticate
308: my $authhost=Apache::lonnet::authenticate($FORM{'uname'},
309: $upass,
310: $FORM{'udom'});
311:
312: # --------------------------------------------------------------------- Failed?
313:
314: if ($authhost eq 'no_host') {
315: failed($r,'Username and/or password could not be authenticated');
316: return OK;
317: }
318:
319: if (($firsturl eq '') || ($firsturl eq '/adm/logout')) {
320: $firsturl='/adm/roles';
321: }
322:
323: success($r,$FORM{'uname'},$FORM{'udom'},$authhost,$firsturl);
324: return OK;
325: }
326:
327: 1;
328: __END__
329:
330:
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