Annotation of loncom/auth/lonauth.pm, revision 1.101
1.1 albertel 1: # The LearningOnline Network
2: # User Authentication Module
1.27 www 3: #
1.101 ! raeburn 4: # $Id: lonauth.pm,v 1.100 2009/07/22 20:24:07 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();
1.99 bisitz 119: my $brcrum = [{'href' => '',
120: 'text' => 'Successful Login'},];
1.74 albertel 121: my $start_page=&Apache::loncommon::start_page('Successful Login',
1.99 bisitz 122: $startupremote,
123: {'no_inline_link' => 1,
124: 'bread_crumbs' => $brcrum,});
1.74 albertel 125: my $end_page =&Apache::loncommon::end_page();
126:
1.64 albertel 127: my $continuelink;
1.98 www 128: if ($env{'environment.remote'} eq 'off') {
1.100 raeburn 129: $continuelink='<a href="'.$destination.'">'.&mt('Continue').'</a>';
1.64 albertel 130: }
1.5 www 131: # ------------------------------------------------- Output for successful login
132:
1.74 albertel 133: &Apache::loncommon::content_type($r,'text/html');
134: $r->header_out('Set-cookie' => $cookie);
135: $r->send_http_header;
1.1 albertel 136:
1.58 www 137: my %lt=&Apache::lonlocal::texthash(
138: 'wel' => 'Welcome',
1.92 bisitz 139: 'mes' => 'Welcome to the Learning<i>Online</i> Network with CAPA. Please wait while your session is being set up.',
140: 'pro' => 'Login problems?',
1.58 www 141: 'log' => 'loginproblems.html',
142: );
1.1 albertel 143: $r->print(<<ENDSUCCESS);
1.74 albertel 144: $start_page
1.35 www 145: $setflags
1.19 www 146: $windowinfo
1.58 www 147: <h1>$lt{'wel'}</h1>
1.92 bisitz 148: $lt{'mes'}<p>
149: <a href="/adm/$lt{'log'}">$lt{'pro'}</a></p>
1.63 albertel 150: $remoteinfo
1.35 www 151: $maincall
1.64 albertel 152: $continuelink
1.74 albertel 153: $end_page
1.1 albertel 154: ENDSUCCESS
155: }
156:
157: # --------------------------------------------------------------- Failed login!
158:
159: sub failed {
1.85 albertel 160: my ($r,$message,$form) = @_;
1.76 albertel 161: my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,
162: {'no_inline_link' => 1,});
1.100 raeburn 163: my $retry = '/adm/login?username='.$form->{'uname'}.
164: '&domain='.$form->{'udom'};
165: if (exists($form->{role})) {
166: $retry .= '&role='.$form->{role};
167: }
168: if (exists($form->{symb})) {
169: $retry .= '&symb='.$form->{symb};
170: }
1.74 albertel 171: my $end_page = &Apache::loncommon::end_page();
172: &Apache::loncommon::content_type($r,'text/html');
173: $r->send_http_header;
1.92 bisitz 174: $r->print(
175: $start_page
176: .'<h1>'.&mt('Sorry ...').'</h1>'
1.95 bisitz 177: .'<p class="LC_warning">'.&mt($message).'</p>'
1.100 raeburn 178: .'<p>'.&mt('Please [_1]log in again[_2].','<a href="'.$retry.'">','</a>')
1.92 bisitz 179: .'</p>'
180: .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
181: .$end_page
182: );
183: }
1.60 www 184:
1.55 www 185: # ------------------------------------------------------------------ Rerouting!
186:
187: sub reroute {
1.74 albertel 188: my ($r) = @_;
189: &Apache::loncommon::content_type($r,'text/html');
190: $r->send_http_header;
1.92 bisitz 191: my $msg='<h1>'.&mt('Sorry ...').'</h1>'
192: .&mt('Please [_1]log in again[_2].');
1.74 albertel 193: &Apache::loncommon::simple_error_page($r,'Rerouting',$msg);
1.55 www 194: }
195:
1.1 albertel 196: # ---------------------------------------------------------------- Main handler
197:
198: sub handler {
199: my $r = shift;
1.85 albertel 200: my $form;
1.55 www 201: # Are we re-routing?
202: if (-e '/home/httpd/html/lon-status/reroute.txt') {
203: &reroute($r);
204: return OK;
205: }
1.56 www 206:
1.57 www 207: &Apache::lonlocal::get_language_handle($r);
1.1 albertel 208:
1.59 www 209: # -------------------------------- Prevent users from attempting to login twice
1.89 albertel 210: my $handle = &Apache::lonnet::check_for_valid_session($r);
211: if ($handle ne '') {
1.59 www 212: # Indeed, a valid token is found
1.89 albertel 213: &Apache::loncommon::content_type($r,'text/html');
214: $r->send_http_header;
215: my $start_page =
216: &Apache::loncommon::start_page('Already logged in');
217: my $end_page =
218: &Apache::loncommon::end_page();
1.92 bisitz 219: $r->print(
220: $start_page
221: .'<h1>'.&mt('You are already logged in!').'</h1>'
1.97 hauer 222: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].'
1.92 bisitz 223: ,'<a href="/adm/roles">','</a>','<a href="/adm/logout">','</a>')
224: .'</p>'
225: .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
226: .$end_page
227: );
228: return OK;
1.59 www 229: }
230:
231: # ---------------------------------------------------- No valid token, continue
232:
233:
1.1 albertel 234: my $buffer;
1.84 albertel 235: if ($r->header_in('Content-length') > 0) {
236: $r->read($buffer,$r->header_in('Content-length'),0);
237: }
1.85 albertel 238: my %form;
239: foreach my $pair (split(/&/,$buffer)) {
240: my ($name,$value) = split(/=/,$pair);
1.7 www 241: $value =~ tr/+/ /;
242: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.85 albertel 243: $form{$name}=$value;
1.1 albertel 244: }
245:
1.85 albertel 246: if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) {
247: &failed($r,'Username, password and domain need to be specified.',
248: \%form);
1.1 albertel 249: return OK;
250: }
1.61 www 251:
252: # split user logging in and "su"-user
253:
1.85 albertel 254: ($form{'uname'},$form{'suname'})=split(/\:/,$form{'uname'});
1.87 albertel 255: $form{'uname'} = &LONCAPA::clean_username($form{'uname'});
256: $form{'suname'}= &LONCAPA::clean_username($form{'suname'});
257: $form{'udom'} = &LONCAPA::clean_domain( $form{'udom'});
1.1 albertel 258:
259: my $role = $r->dir_config('lonRole');
260: my $domain = $r->dir_config('lonDefDomain');
261: my $prodir = $r->dir_config('lonUsersDir');
1.93 raeburn 262: my $contact_name = &mt('LON-CAPA helpdesk');
1.1 albertel 263:
1.8 www 264: # ---------------------------------------- Get the information from login token
265:
1.85 albertel 266: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
267: $form{'serverid'});
1.8 www 268:
269: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
1.85 albertel 270: &failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form);
1.8 www 271: return OK;
1.44 www 272: } else {
1.85 albertel 273: my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'},
274: $form{'serverid'});
1.77 albertel 275: if ( $reply ne 'ok' ) {
1.85 albertel 276: &failed($r,'Session could not be opened.',\%form);
277: &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $form{'serverid'}." to get login token");
1.77 albertel 278: return OK;
1.44 www 279: }
1.8 www 280: }
1.100 raeburn 281:
1.93 raeburn 282: if (!&Apache::lonnet::domain($form{'udom'})) {
283: &failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form);
284: return OK;
285: }
1.100 raeburn 286:
287: my ($key,$firsturl,$rolestr,$symbstr)=split(/&/,$tmpinfo);
288: if ($rolestr) {
289: $rolestr = &unescape($rolestr);
290: }
291: if ($symbstr) {
292: $symbstr= &unescape($symbstr);
293: }
294: if ($rolestr =~ /^role=/) {
295: (undef,$form{'role'}) = split('=',$rolestr);
296: }
297: if ($symbstr =~ /^symb=/) {
298: (undef,$form{'symb'}) = split('=',$symbstr);
299: }
1.8 www 300:
301: my $keybin=pack("H16",$key);
302:
1.26 harris41 303: my $cipher;
304: if ($Crypt::DES::VERSION>=2.03) {
305: $cipher=new Crypt::DES $keybin;
306: }
307: else {
308: $cipher=new DES $keybin;
309: }
1.67 www 310: my $upass='';
311: for (my $i=0;$i<=2;$i++) {
312: my $chunk=
1.85 albertel 313: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},0,16))));
1.8 www 314:
1.67 www 315: $chunk.=
1.85 albertel 316: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},16,16))));
1.8 www 317:
1.67 www 318: $chunk=substr($chunk,1,ord(substr($chunk,0,1)));
319: $upass.=$chunk;
320: }
1.8 www 321:
1.1 albertel 322: # ---------------------------------------------------------------- Authenticate
1.91 raeburn 323: my @cancreate;
1.90 raeburn 324: my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
325: if (ref($domconfig{'usercreation'}) eq 'HASH') {
326: if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
1.91 raeburn 327: if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') {
328: @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}};
329: } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') &&
330: ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) {
331: @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'});
1.90 raeburn 332: }
333: }
334: }
335: my $defaultauth;
1.91 raeburn 336: if (grep(/^login$/,@cancreate)) {
1.90 raeburn 337: $defaultauth = 1;
338: }
339: my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass,
340: $form{'udom'},$defaultauth);
1.1 albertel 341:
342: # --------------------------------------------------------------------- Failed?
343:
344: if ($authhost eq 'no_host') {
1.85 albertel 345: &failed($r,'Username and/or password could not be authenticated.',
346: \%form);
1.1 albertel 347: return OK;
1.90 raeburn 348: } elsif ($authhost eq 'no_account_on_host') {
349: my %domconfig =
350: &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
1.91 raeburn 351: if (grep(/^login$/,@cancreate)) {
1.90 raeburn 352: my $start_page =
353: &Apache::loncommon::start_page('Create a user account in LON-CAPA',
354: '',{'no_inline_link' => 1,});
355: my $domdesc = &Apache::lonnet::domain($form{'udom'},'description');
1.93 raeburn 356: my $lonhost = $r->dir_config('lonHostID');
357: my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
358: my $contacts =
359: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
360: $form{'udom'},$origmail);
361: my ($contact_email) = split(',',$contacts);
1.94 raeburn 362: my $output = &Apache::createaccount::username_check($form{'uname'},
363: $form{'udom'},$domdesc,'',
364: $lonhost,$contact_email,$contact_name);
1.90 raeburn 365: &Apache::loncommon::content_type($r,'text/html');
366: $r->send_http_header;
367: &Apache::createaccount::print_header($r,$start_page);
1.94 raeburn 368: $r->print('<h3>'.&mt('Account creation').'</h3>'.
369: &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'<br />'.
370: $output.&Apache::loncommon::end_page());
1.90 raeburn 371: return OK;
372: } else {
373: &failed($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);
374: return OK;
375: }
1.1 albertel 376: }
377:
1.59 www 378: if (($firsturl eq '') ||
379: ($firsturl=~/^\/adm\/(logout|remote)/)) {
1.24 www 380: $firsturl='/adm/roles';
1.7 www 381: }
1.61 www 382: # --------------------------------- Are we attempting to login as somebody else?
1.85 albertel 383: if ($form{'suname'}) {
1.61 www 384: # ------------ see if the original user has enough privileges to pull this stunt
1.85 albertel 385: if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'})) {
1.61 www 386: # ---------------------------------------------------- see if the su-user exists
1.85 albertel 387: unless (&Apache::lonnet::homeserver($form{'suname'},$form{'udom'})
1.61 www 388: eq 'no_host') {
1.85 albertel 389: &Apache::lonnet::logthis(&Apache::lonnet::homeserver($form{'suname'},$form{'udom'}));
1.61 www 390: # ------------------------------ see if the su-user is not too highly privileged
1.85 albertel 391: unless (&Apache::lonnet::privileged($form{'suname'},$form{'udom'})) {
1.61 www 392: # -------------------------------------------------------- actually switch users
1.85 albertel 393: &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.$form{'udom'}.
394: ' logging in as '.$form{'suname'});
395: $form{'uname'}=$form{'suname'};
1.61 www 396: } else {
397: &Apache::lonnet::logthis('Attempted switch user to privileged user');
398: }
399: }
400: } else {
401: &Apache::lonnet::logthis('Non-privileged user attempting switch user');
402: }
403: }
1.85 albertel 404:
1.81 albertel 405: if ($r->dir_config("lonBalancer") eq 'yes') {
1.85 albertel 406: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
407: \%form);
1.81 albertel 408: $r->internal_redirect('/adm/switchserver');
409: } else {
1.85 albertel 410: &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef,
411: \%form);
1.81 albertel 412: }
1.1 albertel 413: return OK;
414: }
415:
416: 1;
417: __END__
1.7 www 418:
419:
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