Annotation of loncom/auth/lonauth.pm, revision 1.92
1.1 albertel 1: # The LearningOnline Network
2: # User Authentication Module
1.27 www 3: #
1.92 ! bisitz 4: # $Id: lonauth.pm,v 1.91 2008/05/14 18:27:30 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;
1.85 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 $continuelink;
1.66 albertel 87: if (($env{'browser.interface'} eq 'textual') ||
88: ($env{'environment.remote'} eq 'off')) {
1.64 albertel 89: $continuelink="<a href=\"$lowerurl\">".&mt('Continue')."</a>";
90: }
1.5 www 91: # ------------------------------------------------- Output for successful login
92:
1.74 albertel 93: &Apache::loncommon::content_type($r,'text/html');
94: $r->header_out('Set-cookie' => $cookie);
95: $r->send_http_header;
1.1 albertel 96:
1.58 www 97: my %lt=&Apache::lonlocal::texthash(
98: 'wel' => 'Welcome',
1.92 ! bisitz 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?',
1.58 www 101: 'log' => 'loginproblems.html',
102: );
1.1 albertel 103: $r->print(<<ENDSUCCESS);
1.74 albertel 104: $start_page
1.35 www 105: $setflags
1.19 www 106: $windowinfo
1.58 www 107: <h1>$lt{'wel'}</h1>
1.92 ! bisitz 108: $lt{'mes'}<p>
! 109: <a href="/adm/$lt{'log'}">$lt{'pro'}</a></p>
1.63 albertel 110: $remoteinfo
1.35 www 111: $maincall
1.64 albertel 112: $continuelink
1.74 albertel 113: $end_page
1.1 albertel 114: ENDSUCCESS
115: }
116:
117: # --------------------------------------------------------------- Failed login!
118:
119: sub failed {
1.85 albertel 120: my ($r,$message,$form) = @_;
1.76 albertel 121: my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,
122: {'no_inline_link' => 1,});
1.74 albertel 123: my $end_page = &Apache::loncommon::end_page();
124: &Apache::loncommon::content_type($r,'text/html');
125: $r->send_http_header;
1.92 ! bisitz 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: .$end_page
! 135: );
! 136: }
1.60 www 137:
1.55 www 138: # ------------------------------------------------------------------ Rerouting!
139:
140: sub reroute {
1.74 albertel 141: my ($r) = @_;
142: &Apache::loncommon::content_type($r,'text/html');
143: $r->send_http_header;
1.92 ! bisitz 144: my $msg='<h1>'.&mt('Sorry ...').'</h1>'
! 145: .&mt('Please [_1]log in again[_2].');
1.74 albertel 146: &Apache::loncommon::simple_error_page($r,'Rerouting',$msg);
1.55 www 147: }
148:
1.1 albertel 149: # ---------------------------------------------------------------- Main handler
150:
151: sub handler {
152: my $r = shift;
1.85 albertel 153: my $form;
1.55 www 154: # Are we re-routing?
155: if (-e '/home/httpd/html/lon-status/reroute.txt') {
156: &reroute($r);
157: return OK;
158: }
1.56 www 159:
1.57 www 160: &Apache::lonlocal::get_language_handle($r);
1.1 albertel 161:
1.59 www 162: # -------------------------------- Prevent users from attempting to login twice
1.89 albertel 163: my $handle = &Apache::lonnet::check_for_valid_session($r);
164: if ($handle ne '') {
1.59 www 165: # Indeed, a valid token is found
1.89 albertel 166: &Apache::loncommon::content_type($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();
1.92 ! bisitz 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;
1.59 www 182: }
183:
184: # ---------------------------------------------------- No valid token, continue
185:
186:
1.1 albertel 187: my $buffer;
1.84 albertel 188: if ($r->header_in('Content-length') > 0) {
189: $r->read($buffer,$r->header_in('Content-length'),0);
190: }
1.85 albertel 191: my %form;
192: foreach my $pair (split(/&/,$buffer)) {
193: my ($name,$value) = split(/=/,$pair);
1.7 www 194: $value =~ tr/+/ /;
195: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.85 albertel 196: $form{$name}=$value;
1.1 albertel 197: }
198:
1.85 albertel 199: if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) {
200: &failed($r,'Username, password and domain need to be specified.',
201: \%form);
1.1 albertel 202: return OK;
203: }
1.61 www 204:
205: # split user logging in and "su"-user
206:
1.85 albertel 207: ($form{'uname'},$form{'suname'})=split(/\:/,$form{'uname'});
1.87 albertel 208: $form{'uname'} = &LONCAPA::clean_username($form{'uname'});
209: $form{'suname'}= &LONCAPA::clean_username($form{'suname'});
210: $form{'udom'} = &LONCAPA::clean_domain( $form{'udom'});
1.1 albertel 211:
212: my $role = $r->dir_config('lonRole');
213: my $domain = $r->dir_config('lonDefDomain');
214: my $prodir = $r->dir_config('lonUsersDir');
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 ". $form{'serverid'}." to get login token");
1.77 albertel 230: return OK;
1.44 www 231: }
1.8 www 232: }
1.9 www 233: my ($key,$firsturl)=split(/&/,$tmpinfo);
1.8 www 234:
235: my $keybin=pack("H16",$key);
236:
1.26 harris41 237: my $cipher;
238: if ($Crypt::DES::VERSION>=2.03) {
239: $cipher=new Crypt::DES $keybin;
240: }
241: else {
242: $cipher=new DES $keybin;
243: }
1.67 www 244: my $upass='';
245: for (my $i=0;$i<=2;$i++) {
246: my $chunk=
1.85 albertel 247: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},0,16))));
1.8 www 248:
1.67 www 249: $chunk.=
1.85 albertel 250: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},16,16))));
1.8 www 251:
1.67 www 252: $chunk=substr($chunk,1,ord(substr($chunk,0,1)));
253: $upass.=$chunk;
254: }
1.8 www 255:
1.1 albertel 256: # ---------------------------------------------------------------- Authenticate
1.91 raeburn 257: my @cancreate;
1.90 raeburn 258: my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
259: if (ref($domconfig{'usercreation'}) eq 'HASH') {
260: if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
1.91 raeburn 261: if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') {
262: @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}};
263: } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') &&
264: ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) {
265: @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'});
1.90 raeburn 266: }
267: }
268: }
269: my $defaultauth;
1.91 raeburn 270: if (grep(/^login$/,@cancreate)) {
1.90 raeburn 271: $defaultauth = 1;
272: }
273: my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass,
274: $form{'udom'},$defaultauth);
1.1 albertel 275:
276: # --------------------------------------------------------------------- Failed?
277:
278: if ($authhost eq 'no_host') {
1.85 albertel 279: &failed($r,'Username and/or password could not be authenticated.',
280: \%form);
1.1 albertel 281: return OK;
1.90 raeburn 282: } elsif ($authhost eq 'no_account_on_host') {
283: my %domconfig =
284: &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
1.91 raeburn 285: if (grep(/^login$/,@cancreate)) {
1.90 raeburn 286: my $start_page =
287: &Apache::loncommon::start_page('Create a user account in LON-CAPA',
288: '',{'no_inline_link' => 1,});
289: my $domdesc = &Apache::lonnet::domain($form{'udom'},'description');
1.91 raeburn 290: my ($output,$checkfail) = &Apache::createaccount::username_check($form{'uname'},
291: $form{'udom'},$domdesc);
1.90 raeburn 292: &Apache::loncommon::content_type($r,'text/html');
293: $r->send_http_header;
294: &Apache::createaccount::print_header($r,$start_page);
1.91 raeburn 295: my $msg = '<h4>'.&mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account in this domain.').'<br />';
296: if ($checkfail) {
297: $msg .= &mt('A LON-CAPA account may not be created with the username you used.');
298: } else {
299: $msg .= &mt('To create one, use the table below to provide information about yourself (if appropriate), then click the "Create LON-CAPA account" button.');
300: }
301: $r->print('<h4>'.$msg.'</h4>'.$output);
1.90 raeburn 302: $r->print(&Apache::loncommon::end_page());
303: return OK;
304: } else {
305: &failed($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);
306: return OK;
307: }
1.1 albertel 308: }
309:
1.59 www 310: if (($firsturl eq '') ||
311: ($firsturl=~/^\/adm\/(logout|remote)/)) {
1.24 www 312: $firsturl='/adm/roles';
1.7 www 313: }
1.61 www 314: # --------------------------------- Are we attempting to login as somebody else?
1.85 albertel 315: if ($form{'suname'}) {
1.61 www 316: # ------------ see if the original user has enough privileges to pull this stunt
1.85 albertel 317: if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'})) {
1.61 www 318: # ---------------------------------------------------- see if the su-user exists
1.85 albertel 319: unless (&Apache::lonnet::homeserver($form{'suname'},$form{'udom'})
1.61 www 320: eq 'no_host') {
1.85 albertel 321: &Apache::lonnet::logthis(&Apache::lonnet::homeserver($form{'suname'},$form{'udom'}));
1.61 www 322: # ------------------------------ see if the su-user is not too highly privileged
1.85 albertel 323: unless (&Apache::lonnet::privileged($form{'suname'},$form{'udom'})) {
1.61 www 324: # -------------------------------------------------------- actually switch users
1.85 albertel 325: &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.$form{'udom'}.
326: ' logging in as '.$form{'suname'});
327: $form{'uname'}=$form{'suname'};
1.61 www 328: } else {
329: &Apache::lonnet::logthis('Attempted switch user to privileged user');
330: }
331: }
332: } else {
333: &Apache::lonnet::logthis('Non-privileged user attempting switch user');
334: }
335: }
1.85 albertel 336:
1.81 albertel 337: if ($r->dir_config("lonBalancer") eq 'yes') {
1.85 albertel 338: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
339: \%form);
1.81 albertel 340: $r->internal_redirect('/adm/switchserver');
341: } else {
1.85 albertel 342: &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef,
343: \%form);
1.81 albertel 344: }
1.1 albertel 345: return OK;
346: }
347:
348: 1;
349: __END__
1.7 www 350:
351:
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