File:
[LON-CAPA] /
loncom /
auth /
lonauth.pm
Revision
1.94:
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Sun Jul 13 00:51:31 2008 UTC (16 years, 2 months ago) by
raeburn
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MAIN
CVS tags:
version_2_7_X,
version_2_7_1,
version_2_7_0,
version_2_6_99_1,
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Move duplicate code in lonauth.pm and createaccount.pm which handles result from createaccount::username_check() into username_check() for both log-in ID and SSO cases.
- additional args ($contact_name $sso_logout) passed to &username_check for SSO case.
- Page for user information data table customized based on availability of data fields, and whther data can be entered (according to $rowcount and $editable args returned from &loncreateuser::personal_data_display().
- If no values are available or editable don't display table.
- If only non-editable values are available - display table with appropriate message.
- If one or more editable values - display table with appropriate message.
If username check reports errors (e.g., 'username' not in institutional database, or 'authtoken' - authtoken could not be set) - display appropriate error reports.
1: # The LearningOnline Network
2: # User Authentication Module
3: #
4: # $Id: lonauth.pm,v 1.94 2008/07/13 00:51:31 raeburn 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:
29: package Apache::lonauth;
30:
31: use strict;
32: use LONCAPA;
33: use Apache::Constants qw(:common);
34: use CGI qw(:standard);
35: use DynaLoader; # for Crypt::DES version
36: use Crypt::DES;
37: use Apache::loncommon();
38: use Apache::lonnet;
39: use Apache::lonmenu();
40: use Apache::createaccount;
41: use Fcntl qw(:flock);
42: use Apache::lonlocal;
43:
44: # ------------------------------------------------------------ Successful login
45: sub success {
46: my ($r, $username, $domain, $authhost, $lowerurl, $extra_env,
47: $form) = @_;
48:
49: # ------------------------------------------------------------ Get cookie ready
50: my $cookie =
51: &Apache::loncommon::init_user_environment($r, $username, $domain,
52: $authhost, $form,
53: {'extra_env' => $extra_env,});
54:
55: my $public=($username eq 'public' && $domain eq 'public');
56:
57: if ($public or $lowerurl eq 'noredirect') { return $cookie; }
58:
59: # -------------------------------------------------------------------- Log this
60:
61: &Apache::lonnet::log($domain,$username,$authhost,
62: "Login $ENV{'REMOTE_ADDR'}");
63:
64: # ------------------------------------------------- Check for critical messages
65:
66: my @what=&Apache::lonnet::dump('critical',$domain,$username);
67: if ($what[0]) {
68: if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) {
69: $lowerurl='/adm/email?critical=display';
70: }
71: }
72:
73: # ------------------------------------------------------------ Get cookie ready
74: $cookie="lonID=$cookie; path=/";
75: # -------------------------------------------------------- Menu script and info
76: my $windowinfo=&Apache::lonmenu::open($env{'browser.os'});
77: my $startupremote=&Apache::lonmenu::startupremote($lowerurl);
78: my $remoteinfo=&Apache::lonmenu::load_remote_msg($lowerurl);
79: my $setflags=&Apache::lonmenu::setflags();
80: my $maincall=&Apache::lonmenu::maincall();
81: my $start_page=&Apache::loncommon::start_page('Successful Login',
82: $startupremote,
83: {'no_inline_link' => 1,});
84: my $end_page =&Apache::loncommon::end_page();
85:
86: my $continuelink;
87: if (($env{'browser.interface'} eq 'textual') ||
88: ($env{'environment.remote'} eq 'off')) {
89: $continuelink="<a href=\"$lowerurl\">".&mt('Continue')."</a>";
90: }
91: # ------------------------------------------------- Output for successful login
92:
93: &Apache::loncommon::content_type($r,'text/html');
94: $r->header_out('Set-cookie' => $cookie);
95: $r->send_http_header;
96:
97: my %lt=&Apache::lonlocal::texthash(
98: 'wel' => 'Welcome',
99: 'mes' => 'Welcome to the Learning<i>Online</i> Network with CAPA. Please wait while your session is being set up.',
100: 'pro' => 'Login problems?',
101: 'log' => 'loginproblems.html',
102: );
103: $r->print(<<ENDSUCCESS);
104: $start_page
105: $setflags
106: $windowinfo
107: <h1>$lt{'wel'}</h1>
108: $lt{'mes'}<p>
109: <a href="/adm/$lt{'log'}">$lt{'pro'}</a></p>
110: $remoteinfo
111: $maincall
112: $continuelink
113: $end_page
114: ENDSUCCESS
115: }
116:
117: # --------------------------------------------------------------- Failed login!
118:
119: sub failed {
120: my ($r,$message,$form) = @_;
121: my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,
122: {'no_inline_link' => 1,});
123: my $end_page = &Apache::loncommon::end_page();
124: &Apache::loncommon::content_type($r,'text/html');
125: $r->send_http_header;
126: $r->print(
127: $start_page
128: .'<h1>'.&mt('Sorry ...').'</h1>'
129: .'<p><b>'.&mt($message).'</b></p>'
130: .'<p>'.&mt('Please [_1]log in again[_2].'
131: ,"<a href=\"/adm/login?username=$form->{'uname'}&domain=$form->{'udom'}\">",'</a>')
132: .'</p>'
133: .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
134: .$end_page
135: );
136: }
137:
138: # ------------------------------------------------------------------ Rerouting!
139:
140: sub reroute {
141: my ($r) = @_;
142: &Apache::loncommon::content_type($r,'text/html');
143: $r->send_http_header;
144: my $msg='<h1>'.&mt('Sorry ...').'</h1>'
145: .&mt('Please [_1]log in again[_2].');
146: &Apache::loncommon::simple_error_page($r,'Rerouting',$msg);
147: }
148:
149: # ---------------------------------------------------------------- Main handler
150:
151: sub handler {
152: my $r = shift;
153: my $form;
154: # Are we re-routing?
155: if (-e '/home/httpd/html/lon-status/reroute.txt') {
156: &reroute($r);
157: return OK;
158: }
159:
160: &Apache::lonlocal::get_language_handle($r);
161:
162: # -------------------------------- Prevent users from attempting to login twice
163: my $handle = &Apache::lonnet::check_for_valid_session($r);
164: if ($handle ne '') {
165: # Indeed, a valid token is found
166: &Apache::loncommon::content_type($r,'text/html');
167: $r->send_http_header;
168: my $start_page =
169: &Apache::loncommon::start_page('Already logged in');
170: my $end_page =
171: &Apache::loncommon::end_page();
172: $r->print(
173: $start_page
174: .'<h1>'.&mt('You are already logged in!').'</h1>'
175: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]logout[_4].'
176: ,'<a href="/adm/roles">','</a>','<a href="/adm/logout">','</a>')
177: .'</p>'
178: .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
179: .$end_page
180: );
181: return OK;
182: }
183:
184: # ---------------------------------------------------- No valid token, continue
185:
186:
187: my $buffer;
188: if ($r->header_in('Content-length') > 0) {
189: $r->read($buffer,$r->header_in('Content-length'),0);
190: }
191: my %form;
192: foreach my $pair (split(/&/,$buffer)) {
193: my ($name,$value) = split(/=/,$pair);
194: $value =~ tr/+/ /;
195: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
196: $form{$name}=$value;
197: }
198:
199: if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) {
200: &failed($r,'Username, password and domain need to be specified.',
201: \%form);
202: return OK;
203: }
204:
205: # split user logging in and "su"-user
206:
207: ($form{'uname'},$form{'suname'})=split(/\:/,$form{'uname'});
208: $form{'uname'} = &LONCAPA::clean_username($form{'uname'});
209: $form{'suname'}= &LONCAPA::clean_username($form{'suname'});
210: $form{'udom'} = &LONCAPA::clean_domain( $form{'udom'});
211:
212: my $role = $r->dir_config('lonRole');
213: my $domain = $r->dir_config('lonDefDomain');
214: my $prodir = $r->dir_config('lonUsersDir');
215: my $contact_name = &mt('LON-CAPA helpdesk');
216:
217: # ---------------------------------------- Get the information from login token
218:
219: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
220: $form{'serverid'});
221:
222: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
223: &failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form);
224: return OK;
225: } else {
226: my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'},
227: $form{'serverid'});
228: if ( $reply ne 'ok' ) {
229: &failed($r,'Session could not be opened.',\%form);
230: &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $form{'serverid'}." to get login token");
231: return OK;
232: }
233: }
234: if (!&Apache::lonnet::domain($form{'udom'})) {
235: &failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form);
236: return OK;
237: }
238: my ($key,$firsturl)=split(/&/,$tmpinfo);
239:
240: my $keybin=pack("H16",$key);
241:
242: my $cipher;
243: if ($Crypt::DES::VERSION>=2.03) {
244: $cipher=new Crypt::DES $keybin;
245: }
246: else {
247: $cipher=new DES $keybin;
248: }
249: my $upass='';
250: for (my $i=0;$i<=2;$i++) {
251: my $chunk=
252: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},0,16))));
253:
254: $chunk.=
255: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},16,16))));
256:
257: $chunk=substr($chunk,1,ord(substr($chunk,0,1)));
258: $upass.=$chunk;
259: }
260:
261: # ---------------------------------------------------------------- Authenticate
262: my @cancreate;
263: my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
264: if (ref($domconfig{'usercreation'}) eq 'HASH') {
265: if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
266: if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') {
267: @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}};
268: } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') &&
269: ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) {
270: @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'});
271: }
272: }
273: }
274: my $defaultauth;
275: if (grep(/^login$/,@cancreate)) {
276: $defaultauth = 1;
277: }
278: my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass,
279: $form{'udom'},$defaultauth);
280:
281: # --------------------------------------------------------------------- Failed?
282:
283: if ($authhost eq 'no_host') {
284: &failed($r,'Username and/or password could not be authenticated.',
285: \%form);
286: return OK;
287: } elsif ($authhost eq 'no_account_on_host') {
288: my %domconfig =
289: &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
290: if (grep(/^login$/,@cancreate)) {
291: my $start_page =
292: &Apache::loncommon::start_page('Create a user account in LON-CAPA',
293: '',{'no_inline_link' => 1,});
294: my $domdesc = &Apache::lonnet::domain($form{'udom'},'description');
295: my $lonhost = $r->dir_config('lonHostID');
296: my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
297: my $contacts =
298: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
299: $form{'udom'},$origmail);
300: my ($contact_email) = split(',',$contacts);
301: my $output = &Apache::createaccount::username_check($form{'uname'},
302: $form{'udom'},$domdesc,'',
303: $lonhost,$contact_email,$contact_name);
304: &Apache::loncommon::content_type($r,'text/html');
305: $r->send_http_header;
306: &Apache::createaccount::print_header($r,$start_page);
307: $r->print('<h3>'.&mt('Account creation').'</h3>'.
308: &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'<br />'.
309: $output.&Apache::loncommon::end_page());
310: return OK;
311: } else {
312: &failed($r,'Although your username and password were authenticated, you do not currently have a LON-CAPA account in this domain, and you are not permitted to create one.',\%form);
313: return OK;
314: }
315: }
316:
317: if (($firsturl eq '') ||
318: ($firsturl=~/^\/adm\/(logout|remote)/)) {
319: $firsturl='/adm/roles';
320: }
321: # --------------------------------- Are we attempting to login as somebody else?
322: if ($form{'suname'}) {
323: # ------------ see if the original user has enough privileges to pull this stunt
324: if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'})) {
325: # ---------------------------------------------------- see if the su-user exists
326: unless (&Apache::lonnet::homeserver($form{'suname'},$form{'udom'})
327: eq 'no_host') {
328: &Apache::lonnet::logthis(&Apache::lonnet::homeserver($form{'suname'},$form{'udom'}));
329: # ------------------------------ see if the su-user is not too highly privileged
330: unless (&Apache::lonnet::privileged($form{'suname'},$form{'udom'})) {
331: # -------------------------------------------------------- actually switch users
332: &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.$form{'udom'}.
333: ' logging in as '.$form{'suname'});
334: $form{'uname'}=$form{'suname'};
335: } else {
336: &Apache::lonnet::logthis('Attempted switch user to privileged user');
337: }
338: }
339: } else {
340: &Apache::lonnet::logthis('Non-privileged user attempting switch user');
341: }
342: }
343:
344: if ($r->dir_config("lonBalancer") eq 'yes') {
345: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
346: \%form);
347: $r->internal_redirect('/adm/switchserver');
348: } else {
349: &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef,
350: \%form);
351: }
352: return OK;
353: }
354:
355: 1;
356: __END__
357:
358:
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