Annotation of loncom/auth/lonauth.pm, revision 1.98
1.1 albertel 1: # The LearningOnline Network
2: # User Authentication Module
1.27 www 3: #
1.98 ! www 4: # $Id: lonauth.pm,v 1.97 2009/04/01 14:43:19 hauer Exp $
1.27 www 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: #
1.1 albertel 28:
29: package Apache::lonauth;
30:
1.18 albertel 31: use strict;
1.78 albertel 32: use LONCAPA;
1.1 albertel 33: use Apache::Constants qw(:common);
34: use CGI qw(:standard);
1.26 harris41 35: use DynaLoader; # for Crypt::DES version
1.8 www 36: use Crypt::DES;
1.45 matthew 37: use Apache::loncommon();
1.66 albertel 38: use Apache::lonnet;
1.12 www 39: use Apache::lonmenu();
1.90 raeburn 40: use Apache::createaccount;
1.18 albertel 41: use Fcntl qw(:flock);
1.56 www 42: use Apache::lonlocal;
1.85 albertel 43:
1.1 albertel 44: # ------------------------------------------------------------ Successful login
1.85 albertel 45: sub success {
46: my ($r, $username, $domain, $authhost, $lowerurl, $extra_env,
47: $form) = @_;
1.1 albertel 48:
1.85 albertel 49: # ------------------------------------------------------------ Get cookie ready
50: my $cookie =
51: &Apache::loncommon::init_user_environment($r, $username, $domain,
52: $authhost, $form,
1.86 albertel 53: {'extra_env' => $extra_env,});
1.4 www 54:
1.69 albertel 55: my $public=($username eq 'public' && $domain eq 'public');
56:
1.85 albertel 57: if ($public or $lowerurl eq 'noredirect') { return $cookie; }
1.78 albertel 58:
1.7 www 59: # -------------------------------------------------------------------- Log this
60:
61: &Apache::lonnet::log($domain,$username,$authhost,
62: "Login $ENV{'REMOTE_ADDR'}");
1.4 www 63:
1.14 www 64: # ------------------------------------------------- Check for critical messages
65:
1.21 www 66: my @what=&Apache::lonnet::dump('critical',$domain,$username);
1.14 www 67: if ($what[0]) {
1.22 www 68: if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) {
1.21 www 69: $lowerurl='/adm/email?critical=display';
1.14 www 70: }
71: }
72:
1.5 www 73: # ------------------------------------------------------------ Get cookie ready
1.1 albertel 74: $cookie="lonID=$cookie; path=/";
1.12 www 75: # -------------------------------------------------------- Menu script and info
1.85 albertel 76: my $windowinfo=&Apache::lonmenu::open($env{'browser.os'});
1.35 www 77: my $startupremote=&Apache::lonmenu::startupremote($lowerurl);
1.63 albertel 78: my $remoteinfo=&Apache::lonmenu::load_remote_msg($lowerurl);
1.35 www 79: my $setflags=&Apache::lonmenu::setflags();
80: my $maincall=&Apache::lonmenu::maincall();
1.74 albertel 81: my $start_page=&Apache::loncommon::start_page('Successful Login',
1.76 albertel 82: $startupremote,
83: {'no_inline_link' => 1,});
1.74 albertel 84: my $end_page =&Apache::loncommon::end_page();
85:
1.64 albertel 86: my $continuelink;
1.98 ! www 87: if ($env{'environment.remote'} eq 'off') {
1.64 albertel 88: $continuelink="<a href=\"$lowerurl\">".&mt('Continue')."</a>";
89: }
1.5 www 90: # ------------------------------------------------- Output for successful login
91:
1.74 albertel 92: &Apache::loncommon::content_type($r,'text/html');
93: $r->header_out('Set-cookie' => $cookie);
94: $r->send_http_header;
1.1 albertel 95:
1.58 www 96: my %lt=&Apache::lonlocal::texthash(
97: 'wel' => 'Welcome',
1.92 bisitz 98: 'mes' => 'Welcome to the Learning<i>Online</i> Network with CAPA. Please wait while your session is being set up.',
99: 'pro' => 'Login problems?',
1.58 www 100: 'log' => 'loginproblems.html',
101: );
1.1 albertel 102: $r->print(<<ENDSUCCESS);
1.74 albertel 103: $start_page
1.35 www 104: $setflags
1.19 www 105: $windowinfo
1.58 www 106: <h1>$lt{'wel'}</h1>
1.92 bisitz 107: $lt{'mes'}<p>
108: <a href="/adm/$lt{'log'}">$lt{'pro'}</a></p>
1.63 albertel 109: $remoteinfo
1.35 www 110: $maincall
1.64 albertel 111: $continuelink
1.74 albertel 112: $end_page
1.1 albertel 113: ENDSUCCESS
114: }
115:
116: # --------------------------------------------------------------- Failed login!
117:
118: sub failed {
1.85 albertel 119: my ($r,$message,$form) = @_;
1.76 albertel 120: my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,
121: {'no_inline_link' => 1,});
1.74 albertel 122: my $end_page = &Apache::loncommon::end_page();
123: &Apache::loncommon::content_type($r,'text/html');
124: $r->send_http_header;
1.92 bisitz 125: $r->print(
126: $start_page
127: .'<h1>'.&mt('Sorry ...').'</h1>'
1.95 bisitz 128: .'<p class="LC_warning">'.&mt($message).'</p>'
1.92 bisitz 129: .'<p>'.&mt('Please [_1]log in again[_2].'
130: ,"<a href=\"/adm/login?username=$form->{'uname'}&domain=$form->{'udom'}\">",'</a>')
131: .'</p>'
132: .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
133: .$end_page
134: );
135: }
1.60 www 136:
1.55 www 137: # ------------------------------------------------------------------ Rerouting!
138:
139: sub reroute {
1.74 albertel 140: my ($r) = @_;
141: &Apache::loncommon::content_type($r,'text/html');
142: $r->send_http_header;
1.92 bisitz 143: my $msg='<h1>'.&mt('Sorry ...').'</h1>'
144: .&mt('Please [_1]log in again[_2].');
1.74 albertel 145: &Apache::loncommon::simple_error_page($r,'Rerouting',$msg);
1.55 www 146: }
147:
1.1 albertel 148: # ---------------------------------------------------------------- Main handler
149:
150: sub handler {
151: my $r = shift;
1.85 albertel 152: my $form;
1.55 www 153: # Are we re-routing?
154: if (-e '/home/httpd/html/lon-status/reroute.txt') {
155: &reroute($r);
156: return OK;
157: }
1.56 www 158:
1.57 www 159: &Apache::lonlocal::get_language_handle($r);
1.1 albertel 160:
1.59 www 161: # -------------------------------- Prevent users from attempting to login twice
1.89 albertel 162: my $handle = &Apache::lonnet::check_for_valid_session($r);
163: if ($handle ne '') {
1.59 www 164: # Indeed, a valid token is found
1.89 albertel 165: &Apache::loncommon::content_type($r,'text/html');
166: $r->send_http_header;
167: my $start_page =
168: &Apache::loncommon::start_page('Already logged in');
169: my $end_page =
170: &Apache::loncommon::end_page();
1.92 bisitz 171: $r->print(
172: $start_page
173: .'<h1>'.&mt('You are already logged in!').'</h1>'
1.97 hauer 174: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].'
1.92 bisitz 175: ,'<a href="/adm/roles">','</a>','<a href="/adm/logout">','</a>')
176: .'</p>'
177: .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
178: .$end_page
179: );
180: return OK;
1.59 www 181: }
182:
183: # ---------------------------------------------------- No valid token, continue
184:
185:
1.1 albertel 186: my $buffer;
1.84 albertel 187: if ($r->header_in('Content-length') > 0) {
188: $r->read($buffer,$r->header_in('Content-length'),0);
189: }
1.85 albertel 190: my %form;
191: foreach my $pair (split(/&/,$buffer)) {
192: my ($name,$value) = split(/=/,$pair);
1.7 www 193: $value =~ tr/+/ /;
194: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.85 albertel 195: $form{$name}=$value;
1.1 albertel 196: }
197:
1.85 albertel 198: if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) {
199: &failed($r,'Username, password and domain need to be specified.',
200: \%form);
1.1 albertel 201: return OK;
202: }
1.61 www 203:
204: # split user logging in and "su"-user
205:
1.85 albertel 206: ($form{'uname'},$form{'suname'})=split(/\:/,$form{'uname'});
1.87 albertel 207: $form{'uname'} = &LONCAPA::clean_username($form{'uname'});
208: $form{'suname'}= &LONCAPA::clean_username($form{'suname'});
209: $form{'udom'} = &LONCAPA::clean_domain( $form{'udom'});
1.1 albertel 210:
211: my $role = $r->dir_config('lonRole');
212: my $domain = $r->dir_config('lonDefDomain');
213: my $prodir = $r->dir_config('lonUsersDir');
1.93 raeburn 214: my $contact_name = &mt('LON-CAPA helpdesk');
1.1 albertel 215:
1.8 www 216: # ---------------------------------------- Get the information from login token
217:
1.85 albertel 218: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
219: $form{'serverid'});
1.8 www 220:
221: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
1.85 albertel 222: &failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form);
1.8 www 223: return OK;
1.44 www 224: } else {
1.85 albertel 225: my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'},
226: $form{'serverid'});
1.77 albertel 227: if ( $reply ne 'ok' ) {
1.85 albertel 228: &failed($r,'Session could not be opened.',\%form);
229: &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $form{'serverid'}." to get login token");
1.77 albertel 230: return OK;
1.44 www 231: }
1.8 www 232: }
1.93 raeburn 233: if (!&Apache::lonnet::domain($form{'udom'})) {
234: &failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form);
235: return OK;
236: }
1.9 www 237: my ($key,$firsturl)=split(/&/,$tmpinfo);
1.8 www 238:
239: my $keybin=pack("H16",$key);
240:
1.26 harris41 241: my $cipher;
242: if ($Crypt::DES::VERSION>=2.03) {
243: $cipher=new Crypt::DES $keybin;
244: }
245: else {
246: $cipher=new DES $keybin;
247: }
1.67 www 248: my $upass='';
249: for (my $i=0;$i<=2;$i++) {
250: my $chunk=
1.85 albertel 251: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},0,16))));
1.8 www 252:
1.67 www 253: $chunk.=
1.85 albertel 254: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},16,16))));
1.8 www 255:
1.67 www 256: $chunk=substr($chunk,1,ord(substr($chunk,0,1)));
257: $upass.=$chunk;
258: }
1.8 www 259:
1.1 albertel 260: # ---------------------------------------------------------------- Authenticate
1.91 raeburn 261: my @cancreate;
1.90 raeburn 262: my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
263: if (ref($domconfig{'usercreation'}) eq 'HASH') {
264: if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
1.91 raeburn 265: if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') {
266: @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}};
267: } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') &&
268: ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) {
269: @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'});
1.90 raeburn 270: }
271: }
272: }
273: my $defaultauth;
1.91 raeburn 274: if (grep(/^login$/,@cancreate)) {
1.90 raeburn 275: $defaultauth = 1;
276: }
277: my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass,
278: $form{'udom'},$defaultauth);
1.1 albertel 279:
280: # --------------------------------------------------------------------- Failed?
281:
282: if ($authhost eq 'no_host') {
1.85 albertel 283: &failed($r,'Username and/or password could not be authenticated.',
284: \%form);
1.1 albertel 285: return OK;
1.90 raeburn 286: } elsif ($authhost eq 'no_account_on_host') {
287: my %domconfig =
288: &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
1.91 raeburn 289: if (grep(/^login$/,@cancreate)) {
1.90 raeburn 290: my $start_page =
291: &Apache::loncommon::start_page('Create a user account in LON-CAPA',
292: '',{'no_inline_link' => 1,});
293: my $domdesc = &Apache::lonnet::domain($form{'udom'},'description');
1.93 raeburn 294: my $lonhost = $r->dir_config('lonHostID');
295: my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
296: my $contacts =
297: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
298: $form{'udom'},$origmail);
299: my ($contact_email) = split(',',$contacts);
1.94 raeburn 300: my $output = &Apache::createaccount::username_check($form{'uname'},
301: $form{'udom'},$domdesc,'',
302: $lonhost,$contact_email,$contact_name);
1.90 raeburn 303: &Apache::loncommon::content_type($r,'text/html');
304: $r->send_http_header;
305: &Apache::createaccount::print_header($r,$start_page);
1.94 raeburn 306: $r->print('<h3>'.&mt('Account creation').'</h3>'.
307: &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'<br />'.
308: $output.&Apache::loncommon::end_page());
1.90 raeburn 309: return OK;
310: } else {
311: &failed($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);
312: return OK;
313: }
1.1 albertel 314: }
315:
1.59 www 316: if (($firsturl eq '') ||
317: ($firsturl=~/^\/adm\/(logout|remote)/)) {
1.24 www 318: $firsturl='/adm/roles';
1.7 www 319: }
1.61 www 320: # --------------------------------- Are we attempting to login as somebody else?
1.85 albertel 321: if ($form{'suname'}) {
1.61 www 322: # ------------ see if the original user has enough privileges to pull this stunt
1.85 albertel 323: if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'})) {
1.61 www 324: # ---------------------------------------------------- see if the su-user exists
1.85 albertel 325: unless (&Apache::lonnet::homeserver($form{'suname'},$form{'udom'})
1.61 www 326: eq 'no_host') {
1.85 albertel 327: &Apache::lonnet::logthis(&Apache::lonnet::homeserver($form{'suname'},$form{'udom'}));
1.61 www 328: # ------------------------------ see if the su-user is not too highly privileged
1.85 albertel 329: unless (&Apache::lonnet::privileged($form{'suname'},$form{'udom'})) {
1.61 www 330: # -------------------------------------------------------- actually switch users
1.85 albertel 331: &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.$form{'udom'}.
332: ' logging in as '.$form{'suname'});
333: $form{'uname'}=$form{'suname'};
1.61 www 334: } else {
335: &Apache::lonnet::logthis('Attempted switch user to privileged user');
336: }
337: }
338: } else {
339: &Apache::lonnet::logthis('Non-privileged user attempting switch user');
340: }
341: }
1.85 albertel 342:
1.81 albertel 343: if ($r->dir_config("lonBalancer") eq 'yes') {
1.85 albertel 344: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
345: \%form);
1.81 albertel 346: $r->internal_redirect('/adm/switchserver');
347: } else {
1.85 albertel 348: &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef,
349: \%form);
1.81 albertel 350: }
1.1 albertel 351: return OK;
352: }
353:
354: 1;
355: __END__
1.7 www 356:
357:
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