Annotation of loncom/auth/lonauth.pm, revision 1.101.4.1
1.1 albertel 1: # The LearningOnline Network
2: # User Authentication Module
1.27 www 3: #
1.101.4.1! raeburn 4: # $Id: lonauth.pm,v 1.101 2009/07/22 21:51:03 raeburn 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;
1.101 raeburn 43: use HTML::Entities;
1.85 albertel 44:
1.1 albertel 45: # ------------------------------------------------------------ Successful login
1.85 albertel 46: sub success {
47: my ($r, $username, $domain, $authhost, $lowerurl, $extra_env,
48: $form) = @_;
1.1 albertel 49:
1.85 albertel 50: # ------------------------------------------------------------ Get cookie ready
51: my $cookie =
52: &Apache::loncommon::init_user_environment($r, $username, $domain,
53: $authhost, $form,
1.86 albertel 54: {'extra_env' => $extra_env,});
1.4 www 55:
1.69 albertel 56: my $public=($username eq 'public' && $domain eq 'public');
57:
1.85 albertel 58: if ($public or $lowerurl eq 'noredirect') { return $cookie; }
1.78 albertel 59:
1.7 www 60: # -------------------------------------------------------------------- Log this
61:
62: &Apache::lonnet::log($domain,$username,$authhost,
63: "Login $ENV{'REMOTE_ADDR'}");
1.4 www 64:
1.14 www 65: # ------------------------------------------------- Check for critical messages
66:
1.21 www 67: my @what=&Apache::lonnet::dump('critical',$domain,$username);
1.14 www 68: if ($what[0]) {
1.22 www 69: if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) {
1.21 www 70: $lowerurl='/adm/email?critical=display';
1.14 www 71: }
72: }
73:
1.5 www 74: # ------------------------------------------------------------ Get cookie ready
1.1 albertel 75: $cookie="lonID=$cookie; path=/";
1.12 www 76: # -------------------------------------------------------- Menu script and info
1.100 raeburn 77: my $destination = $lowerurl;
78:
79: if (defined($form->{role})) {
80: my $envkey = 'user.role.'.$form->{role};
81: my $now=time;
82: my $then=$env{'user.login.time'};
83: my $refresh=$env{'user.refresh.time'};
84: if (exists($env{$envkey})) {
85: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus);
86: &Apache::lonnet::role_status($envkey,$then,$refresh,$now,\$role,\$where,
87: \$trolecode,\$tstatus,\$tstart,\$tend);
88: if ($tstatus eq 'is') {
1.101 raeburn 89: $destination .= ($destination =~ /\?/) ? '&' : '?';
90: my $newrole = &HTML::Entities::encode($form->{role},'"<>&');
91: $destination .= 'selectrole=1&'.$newrole.'=1';
1.100 raeburn 92: }
93: }
94: }
1.101 raeburn 95: if (defined($form->{symb})) {
96: my $destsymb = $form->{symb};
97: $destination .= ($destination =~ /\?/) ? '&' : '?';
98: if ($destsymb =~ /___/) {
99: # FIXME Need to deal with encrypted symbs and urls as needed.
100: my ($map,$resid,$desturl)=split(/___/,$destsymb);
101: unless ($desturl=~/^(adm|uploaded|editupload|public)/) {
102: $desturl = &Apache::lonnet::clutter($desturl);
103: }
104: $desturl = &HTML::Entities::encode($desturl,'"<>&');
105: $destsymb = &HTML::Entities::encode($destsymb,'"<>&');
106: $destination .= '&destinationurl='.$desturl.
107: '&destsymb='.$destsymb;
108: } else {
109: $destsymb = &HTML::Entities::encode($destsymb,'"<>&');
110: $destination .= '&destinationurl='.$destsymb;
111: }
112: }
1.100 raeburn 113:
1.85 albertel 114: my $windowinfo=&Apache::lonmenu::open($env{'browser.os'});
1.100 raeburn 115: my $startupremote=&Apache::lonmenu::startupremote($destination);
1.63 albertel 116: my $remoteinfo=&Apache::lonmenu::load_remote_msg($lowerurl);
1.35 www 117: my $setflags=&Apache::lonmenu::setflags();
118: my $maincall=&Apache::lonmenu::maincall();
1.74 albertel 119: my $start_page=&Apache::loncommon::start_page('Successful Login',
1.99 bisitz 120: $startupremote,
1.101.4.1! raeburn 121: {'no_inline_link' => 1,});
1.74 albertel 122: my $end_page =&Apache::loncommon::end_page();
123:
1.64 albertel 124: my $continuelink;
1.101.4.1! raeburn 125: if (($env{'browser.interface'} eq 'textual') ||
! 126: ($env{'environment.remote'} eq 'off')) {
1.100 raeburn 127: $continuelink='<a href="'.$destination.'">'.&mt('Continue').'</a>';
1.64 albertel 128: }
1.5 www 129: # ------------------------------------------------- Output for successful login
130:
1.74 albertel 131: &Apache::loncommon::content_type($r,'text/html');
132: $r->header_out('Set-cookie' => $cookie);
133: $r->send_http_header;
1.1 albertel 134:
1.58 www 135: my %lt=&Apache::lonlocal::texthash(
136: 'wel' => 'Welcome',
1.92 bisitz 137: 'mes' => 'Welcome to the Learning<i>Online</i> Network with CAPA. Please wait while your session is being set up.',
138: 'pro' => 'Login problems?',
1.58 www 139: 'log' => 'loginproblems.html',
140: );
1.1 albertel 141: $r->print(<<ENDSUCCESS);
1.74 albertel 142: $start_page
1.35 www 143: $setflags
1.19 www 144: $windowinfo
1.58 www 145: <h1>$lt{'wel'}</h1>
1.92 bisitz 146: $lt{'mes'}<p>
147: <a href="/adm/$lt{'log'}">$lt{'pro'}</a></p>
1.63 albertel 148: $remoteinfo
1.35 www 149: $maincall
1.64 albertel 150: $continuelink
1.74 albertel 151: $end_page
1.1 albertel 152: ENDSUCCESS
153: }
154:
155: # --------------------------------------------------------------- Failed login!
156:
157: sub failed {
1.85 albertel 158: my ($r,$message,$form) = @_;
1.76 albertel 159: my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,
160: {'no_inline_link' => 1,});
1.100 raeburn 161: my $retry = '/adm/login?username='.$form->{'uname'}.
162: '&domain='.$form->{'udom'};
163: if (exists($form->{role})) {
164: $retry .= '&role='.$form->{role};
165: }
166: if (exists($form->{symb})) {
167: $retry .= '&symb='.$form->{symb};
168: }
1.74 albertel 169: my $end_page = &Apache::loncommon::end_page();
170: &Apache::loncommon::content_type($r,'text/html');
171: $r->send_http_header;
1.92 bisitz 172: $r->print(
173: $start_page
174: .'<h1>'.&mt('Sorry ...').'</h1>'
1.95 bisitz 175: .'<p class="LC_warning">'.&mt($message).'</p>'
1.100 raeburn 176: .'<p>'.&mt('Please [_1]log in again[_2].','<a href="'.$retry.'">','</a>')
1.92 bisitz 177: .'</p>'
178: .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
179: .$end_page
180: );
181: }
1.60 www 182:
1.55 www 183: # ------------------------------------------------------------------ Rerouting!
184:
185: sub reroute {
1.74 albertel 186: my ($r) = @_;
187: &Apache::loncommon::content_type($r,'text/html');
188: $r->send_http_header;
1.92 bisitz 189: my $msg='<h1>'.&mt('Sorry ...').'</h1>'
190: .&mt('Please [_1]log in again[_2].');
1.74 albertel 191: &Apache::loncommon::simple_error_page($r,'Rerouting',$msg);
1.55 www 192: }
193:
1.1 albertel 194: # ---------------------------------------------------------------- Main handler
195:
196: sub handler {
197: my $r = shift;
1.85 albertel 198: my $form;
1.55 www 199: # Are we re-routing?
200: if (-e '/home/httpd/html/lon-status/reroute.txt') {
201: &reroute($r);
202: return OK;
203: }
1.56 www 204:
1.57 www 205: &Apache::lonlocal::get_language_handle($r);
1.1 albertel 206:
1.59 www 207: # -------------------------------- Prevent users from attempting to login twice
1.89 albertel 208: my $handle = &Apache::lonnet::check_for_valid_session($r);
209: if ($handle ne '') {
1.59 www 210: # Indeed, a valid token is found
1.89 albertel 211: &Apache::loncommon::content_type($r,'text/html');
212: $r->send_http_header;
213: my $start_page =
214: &Apache::loncommon::start_page('Already logged in');
215: my $end_page =
216: &Apache::loncommon::end_page();
1.92 bisitz 217: $r->print(
218: $start_page
219: .'<h1>'.&mt('You are already logged in!').'</h1>'
1.97 hauer 220: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].'
1.92 bisitz 221: ,'<a href="/adm/roles">','</a>','<a href="/adm/logout">','</a>')
222: .'</p>'
223: .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
224: .$end_page
225: );
226: return OK;
1.59 www 227: }
228:
229: # ---------------------------------------------------- No valid token, continue
230:
231:
1.1 albertel 232: my $buffer;
1.84 albertel 233: if ($r->header_in('Content-length') > 0) {
234: $r->read($buffer,$r->header_in('Content-length'),0);
235: }
1.85 albertel 236: my %form;
237: foreach my $pair (split(/&/,$buffer)) {
238: my ($name,$value) = split(/=/,$pair);
1.7 www 239: $value =~ tr/+/ /;
240: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.85 albertel 241: $form{$name}=$value;
1.1 albertel 242: }
243:
1.85 albertel 244: if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) {
245: &failed($r,'Username, password and domain need to be specified.',
246: \%form);
1.1 albertel 247: return OK;
248: }
1.61 www 249:
250: # split user logging in and "su"-user
251:
1.85 albertel 252: ($form{'uname'},$form{'suname'})=split(/\:/,$form{'uname'});
1.87 albertel 253: $form{'uname'} = &LONCAPA::clean_username($form{'uname'});
254: $form{'suname'}= &LONCAPA::clean_username($form{'suname'});
255: $form{'udom'} = &LONCAPA::clean_domain( $form{'udom'});
1.1 albertel 256:
257: my $role = $r->dir_config('lonRole');
258: my $domain = $r->dir_config('lonDefDomain');
259: my $prodir = $r->dir_config('lonUsersDir');
1.93 raeburn 260: my $contact_name = &mt('LON-CAPA helpdesk');
1.1 albertel 261:
1.8 www 262: # ---------------------------------------- Get the information from login token
263:
1.85 albertel 264: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
265: $form{'serverid'});
1.8 www 266:
267: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
1.85 albertel 268: &failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form);
1.8 www 269: return OK;
1.44 www 270: } else {
1.85 albertel 271: my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'},
272: $form{'serverid'});
1.77 albertel 273: if ( $reply ne 'ok' ) {
1.85 albertel 274: &failed($r,'Session could not be opened.',\%form);
275: &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $form{'serverid'}." to get login token");
1.77 albertel 276: return OK;
1.44 www 277: }
1.8 www 278: }
1.100 raeburn 279:
1.93 raeburn 280: if (!&Apache::lonnet::domain($form{'udom'})) {
281: &failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form);
282: return OK;
283: }
1.100 raeburn 284:
285: my ($key,$firsturl,$rolestr,$symbstr)=split(/&/,$tmpinfo);
286: if ($rolestr) {
287: $rolestr = &unescape($rolestr);
288: }
289: if ($symbstr) {
290: $symbstr= &unescape($symbstr);
291: }
292: if ($rolestr =~ /^role=/) {
293: (undef,$form{'role'}) = split('=',$rolestr);
294: }
295: if ($symbstr =~ /^symb=/) {
296: (undef,$form{'symb'}) = split('=',$symbstr);
297: }
1.8 www 298:
299: my $keybin=pack("H16",$key);
300:
1.26 harris41 301: my $cipher;
302: if ($Crypt::DES::VERSION>=2.03) {
303: $cipher=new Crypt::DES $keybin;
304: }
305: else {
306: $cipher=new DES $keybin;
307: }
1.67 www 308: my $upass='';
309: for (my $i=0;$i<=2;$i++) {
310: my $chunk=
1.85 albertel 311: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},0,16))));
1.8 www 312:
1.67 www 313: $chunk.=
1.85 albertel 314: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},16,16))));
1.8 www 315:
1.67 www 316: $chunk=substr($chunk,1,ord(substr($chunk,0,1)));
317: $upass.=$chunk;
318: }
1.8 www 319:
1.1 albertel 320: # ---------------------------------------------------------------- Authenticate
1.91 raeburn 321: my @cancreate;
1.90 raeburn 322: my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
323: if (ref($domconfig{'usercreation'}) eq 'HASH') {
324: if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
1.91 raeburn 325: if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') {
326: @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}};
327: } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') &&
328: ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) {
329: @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'});
1.90 raeburn 330: }
331: }
332: }
333: my $defaultauth;
1.91 raeburn 334: if (grep(/^login$/,@cancreate)) {
1.90 raeburn 335: $defaultauth = 1;
336: }
337: my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass,
338: $form{'udom'},$defaultauth);
1.1 albertel 339:
340: # --------------------------------------------------------------------- Failed?
341:
342: if ($authhost eq 'no_host') {
1.85 albertel 343: &failed($r,'Username and/or password could not be authenticated.',
344: \%form);
1.1 albertel 345: return OK;
1.90 raeburn 346: } elsif ($authhost eq 'no_account_on_host') {
347: my %domconfig =
348: &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
1.91 raeburn 349: if (grep(/^login$/,@cancreate)) {
1.90 raeburn 350: my $start_page =
351: &Apache::loncommon::start_page('Create a user account in LON-CAPA',
352: '',{'no_inline_link' => 1,});
353: my $domdesc = &Apache::lonnet::domain($form{'udom'},'description');
1.93 raeburn 354: my $lonhost = $r->dir_config('lonHostID');
355: my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
356: my $contacts =
357: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
358: $form{'udom'},$origmail);
359: my ($contact_email) = split(',',$contacts);
1.94 raeburn 360: my $output = &Apache::createaccount::username_check($form{'uname'},
361: $form{'udom'},$domdesc,'',
362: $lonhost,$contact_email,$contact_name);
1.90 raeburn 363: &Apache::loncommon::content_type($r,'text/html');
364: $r->send_http_header;
365: &Apache::createaccount::print_header($r,$start_page);
1.94 raeburn 366: $r->print('<h3>'.&mt('Account creation').'</h3>'.
367: &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'<br />'.
368: $output.&Apache::loncommon::end_page());
1.90 raeburn 369: return OK;
370: } else {
371: &failed($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);
372: return OK;
373: }
1.1 albertel 374: }
375:
1.59 www 376: if (($firsturl eq '') ||
377: ($firsturl=~/^\/adm\/(logout|remote)/)) {
1.24 www 378: $firsturl='/adm/roles';
1.7 www 379: }
1.61 www 380: # --------------------------------- Are we attempting to login as somebody else?
1.85 albertel 381: if ($form{'suname'}) {
1.61 www 382: # ------------ see if the original user has enough privileges to pull this stunt
1.85 albertel 383: if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'})) {
1.61 www 384: # ---------------------------------------------------- see if the su-user exists
1.85 albertel 385: unless (&Apache::lonnet::homeserver($form{'suname'},$form{'udom'})
1.61 www 386: eq 'no_host') {
1.85 albertel 387: &Apache::lonnet::logthis(&Apache::lonnet::homeserver($form{'suname'},$form{'udom'}));
1.61 www 388: # ------------------------------ see if the su-user is not too highly privileged
1.85 albertel 389: unless (&Apache::lonnet::privileged($form{'suname'},$form{'udom'})) {
1.61 www 390: # -------------------------------------------------------- actually switch users
1.85 albertel 391: &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.$form{'udom'}.
392: ' logging in as '.$form{'suname'});
393: $form{'uname'}=$form{'suname'};
1.61 www 394: } else {
395: &Apache::lonnet::logthis('Attempted switch user to privileged user');
396: }
397: }
398: } else {
399: &Apache::lonnet::logthis('Non-privileged user attempting switch user');
400: }
401: }
1.85 albertel 402:
1.81 albertel 403: if ($r->dir_config("lonBalancer") eq 'yes') {
1.85 albertel 404: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
405: \%form);
1.81 albertel 406: $r->internal_redirect('/adm/switchserver');
407: } else {
1.85 albertel 408: &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef,
409: \%form);
1.81 albertel 410: }
1.1 albertel 411: return OK;
412: }
413:
414: 1;
415: __END__
1.7 www 416:
417:
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