1: # The LearningOnline Network
2: # User Authentication Module
3: #
4: # $Id: lonauth.pm,v 1.54 2003/07/17 15:24:46 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::loncommon();
46: use Apache::lonnet();
47: use Apache::lonmenu();
48: use Fcntl qw(:flock);
49:
50: my %FORM;
51:
52: # ------------------------------------------------------------ Successful login
53:
54: sub success {
55: my ($r, $username, $domain, $authhost,$lowerurl) = @_;
56: my $lonids=$r->dir_config('lonIDsDir');
57:
58: # See if old ID present, if so, remove
59:
60: my $filename;
61: opendir(DIR,$lonids);
62: while ($filename=readdir(DIR)) {
63: if ($filename=~/^$username\_\d+\_$domain\_$authhost\.id$/) {
64: unlink($lonids.'/'.$filename);
65: }
66: }
67: closedir(DIR);
68:
69: # Give them a new cookie
70:
71: my $cookie;
72: my $now=time;
73: $cookie="$username\_$now\_$domain\_$authhost";
74:
75: # Initialize roles
76:
77: my $userroles=Apache::lonnet::rolesinit($domain,$username,$authhost);
78:
79: # ------------------------------------ Check browser type and MathML capability
80:
81: my ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
82: $clientunicode,$clientos) = &Apache::loncommon::decode_user_agent($r);
83:
84: # -------------------------------------- Any accessibility options to remember?
85: if (($FORM{'interface'}) && ($FORM{'remember'} eq 'true')) {
86: foreach ('imagesuppress','appletsuppress',
87: 'embedsuppress','fontenhance','blackwhite') {
88: if ($FORM{$_} eq 'true') {
89: &Apache::lonnet::put('environment',{$_ => 'on'},
90: $domain,$username);
91: } else {
92: &Apache::lonnet::del('environment',[$_],$domain,$username);
93: }
94: }
95: }
96: # ------------------------------------------------------------- Get environment
97:
98: my $userenv;
99: my %userenv=Apache::lonnet::dump('environment',$domain,$username);
100: my ($tmp) = keys(%userenv);
101: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
102: foreach my $key (keys(%userenv)) {
103: $userenv.="environment.$key=$userenv{$key}\n";
104: }
105: }
106: if (($userenv{'interface'}) && (!$FORM{'interface'})) {
107: $FORM{'interface'}=$userenv{'interface'};
108: }
109: $ENV{'environment.remote'}=$userenv{'remote'};
110: # --------------- Do not trust query string to be put directly into environment
111: foreach ('imagesuppress','appletsuppress',
112: 'embedsuppress','fontenhance','blackwhite',
113: 'interface','localpath','localres') {
114: $FORM{$_}=~s/[\n\r\=]//gs;
115: }
116: # --------------------------------------------------------- Write first profile
117:
118: {
119: my $idf=Apache::File->new(">$lonids/$cookie.id");
120: unless (flock($idf,LOCK_EX)) {
121: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
122: 'Could not obtain exclusive lock in lonauth: '.$!);
123: $idf->close();
124: return 'error: '.$!;
125: }
126: if ($userenv ne '') { print $idf "$userenv\n"; }
127: print $idf "user.name=$username\n";
128: print $idf "user.domain=$domain\n";
129: print $idf "user.home=$authhost\n";
130: print $idf "browser.type=$clientbrowser\n";
131: print $idf "browser.version=$clientversion\n";
132: print $idf "browser.mathml=$clientmathml\n";
133: print $idf "browser.unicode=$clientunicode\n";
134: print $idf "browser.os=$clientos\n";
135: if ($FORM{'localpath'}) {
136: print $idf "browser.localpath=$FORM{'localpath'}\n";
137: print $idf "browser.localres=$FORM{'localres'}\n";
138: }
139: print $idf "request.course.fn=\n";
140: print $idf "request.course.uri=\n";
141: print $idf "request.course.sec=\n";
142: print $idf "request.role=cm\n";
143: print $idf "request.role.adv=$ENV{'user.adv'}\n";
144: print $idf "request.host=$ENV{'REMOTE_ADDR'}\n";
145: if ($FORM{'interface'}) {
146: $FORM{'interface'}=~s/\W//gs;
147: print $idf "browser.interface=$FORM{'interface'}\n";
148: $ENV{'browser.interface'}=$FORM{'interface'};
149: foreach ('imagesuppress','appletsuppress',
150: 'embedsuppress','fontenhance','blackwhite') {
151: if (($FORM{$_} eq 'true') ||
152: ($userenv{$_} eq 'on')) {
153: print $idf "browser.$_=on\n";
154: }
155: }
156: }
157: if ($userroles ne '') { print $idf "$userroles"; }
158: $idf->close();
159: }
160: $ENV{'request.role'}='cm';
161: $ENV{'request.role.adv'}=$ENV{'user.adv'};
162: $ENV{'browser.type'}=$clientbrowser;
163: # -------------------------------------------------------------------- Log this
164:
165: &Apache::lonnet::log($domain,$username,$authhost,
166: "Login $ENV{'REMOTE_ADDR'}");
167:
168: # ------------------------------------------------- Check for critical messages
169:
170: my @what=&Apache::lonnet::dump('critical',$domain,$username);
171: if ($what[0]) {
172: if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) {
173: $lowerurl='/adm/email?critical=display';
174: }
175: }
176:
177: # ------------------------------------------------------------ Get cookie ready
178:
179: $cookie="lonID=$cookie; path=/";
180: # -------------------------------------------------------- Menu script and info
181: my $windowinfo=&Apache::lonmenu::open($clientos);
182: my $startupremote=&Apache::lonmenu::startupremote($lowerurl);
183: my $setflags=&Apache::lonmenu::setflags();
184: my $maincall=&Apache::lonmenu::maincall();
185: my $bodytag=&Apache::loncommon::bodytag('Successful Login');
186: # ------------------------------------------------- Output for successful login
187:
188: $r->send_cgi_header(<<ENDHEADER);
189: Content-type: text/html
190: Set-cookie: $cookie
191:
192: ENDHEADER
193: $r->print(<<ENDSUCCESS);
194: <html>
195: <head>
196: <title>Successful Login to the LearningOnline Network with CAPA</title>
197: $startupremote
198: </head>
199: $bodytag
200: $setflags
201: $windowinfo
202: <h1>Welcome!</h1>
203: Welcome to the Learning<i>Online</i> Network with CAPA.
204: Please wait while your session
205: is being set up.<p>
206: <a href="/adm/loginproblems.html">Problems?</a></p>
207: $maincall
208: </body>
209: </html>
210: ENDSUCCESS
211: }
212:
213: # --------------------------------------------------------------- Failed login!
214:
215: sub failed {
216: my ($r,$message) = @_;
217: my $bodytag=&Apache::loncommon::bodytag('Unsuccessful Login');
218: $r->send_cgi_header(<<ENDFHEADER);
219: Content-type: text/html
220:
221: ENDFHEADER
222: $r->print(<<ENDFAILED);
223: <html>
224: <head>
225: <title>Unsuccessful Login to the LearningOnline Network with CAPA</title>
226: </head>
227: <html>
228: $bodytag
229: <h1>Sorry ...</h1>
230: <p><b>$message</b></p>
231: <p>Please <a href="/adm/login?username=$FORM{'uname'}&domain=$FORM{'udom'}">log in again</a>.</p>
232: <p>
233: <a href="/adm/loginproblems.html">Problems?</a></p>
234: </body>
235: </html>
236: ENDFAILED
237: }
238:
239: # ---------------------------------------------------------------- Main handler
240:
241: sub handler {
242: my $r = shift;
243:
244: my $buffer;
245: $r->read($buffer,$r->header_in('Content-length'),0);
246: my @pairs=split(/&/,$buffer);
247: my $pair; my $name; my $value;
248: undef %FORM;
249: %FORM=();
250: foreach $pair (@pairs) {
251: ($name,$value) = split(/=/,$pair);
252: $value =~ tr/+/ /;
253: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
254: $FORM{$name}=$value;
255: }
256:
257: if ((!$FORM{'uname'}) || (!$FORM{'upass'}) || (!$FORM{'udom'})) {
258: failed($r,'Username, password and domain need to be specified.');
259: return OK;
260: }
261: $FORM{'uname'} =~ s/\W//g;
262: $FORM{'udom'} =~ s/\W//g;
263:
264: my $role = $r->dir_config('lonRole');
265: my $domain = $r->dir_config('lonDefDomain');
266: my $prodir = $r->dir_config('lonUsersDir');
267:
268: # ---------------------------------------- Get the information from login token
269:
270: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$FORM{'logtoken'},
271: $FORM{'serverid'});
272:
273: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
274: failed($r,'Information needed to verify your login information is missing, inaccessible or expired.');
275: return OK;
276: } else {
277: unless (&Apache::lonnet::reply('tmpdel:'.$FORM{'logtoken'},
278: $FORM{'serverid'}) eq 'ok') {
279: &failed($r,'Session could not be opened.');
280: }
281: }
282: my ($key,$firsturl)=split(/&/,$tmpinfo);
283:
284: my $keybin=pack("H16",$key);
285:
286: my $cipher;
287: if ($Crypt::DES::VERSION>=2.03) {
288: $cipher=new Crypt::DES $keybin;
289: }
290: else {
291: $cipher=new DES $keybin;
292: }
293:
294: my $upass=$cipher->decrypt(
295: unpack("a8",pack("H16",substr($FORM{'upass'},0,16))));
296:
297: $upass.=$cipher->decrypt(
298: unpack("a8",pack("H16",substr($FORM{'upass'},16,16))));
299:
300: $upass=substr($upass,1,ord(substr($upass,0,1)));
301:
302: # ---------------------------------------------------------------- Authenticate
303: my $authhost=Apache::lonnet::authenticate($FORM{'uname'},
304: $upass,
305: $FORM{'udom'});
306:
307: # --------------------------------------------------------------------- Failed?
308:
309: if ($authhost eq 'no_host') {
310: failed($r,'Username and/or password could not be authenticated.');
311: return OK;
312: }
313:
314: if (($firsturl eq '') || ($firsturl eq '/adm/logout')) {
315: $firsturl='/adm/roles';
316: }
317:
318: success($r,$FORM{'uname'},$FORM{'udom'},$authhost,$firsturl);
319: return OK;
320: }
321:
322: 1;
323: __END__
324:
325:
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