Annotation of loncom/auth/lonauth.pm, revision 1.102
1.1 albertel 1: # The LearningOnline Network
2: # User Authentication Module
1.27 www 3: #
1.102 ! droeschl 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:
1.102 ! droeschl 114: my $windowinfo = Apache::lonhtmlcommon::scripttag('self.name="loncapaclient";');
! 115: my $header = '<meta HTTP-EQUIV="Refresh" CONTENT="0; url='.$destination.'" />';
1.99 bisitz 116: my $brcrum = [{'href' => '',
117: 'text' => 'Successful Login'},];
1.74 albertel 118: my $start_page=&Apache::loncommon::start_page('Successful Login',
1.102 ! droeschl 119: $header,
1.99 bisitz 120: {'no_inline_link' => 1,
121: 'bread_crumbs' => $brcrum,});
1.74 albertel 122: my $end_page =&Apache::loncommon::end_page();
123:
1.102 ! droeschl 124: my $continuelink='<a href="'.$destination.'">'.&mt('Continue').'</a>';
1.5 www 125: # ------------------------------------------------- Output for successful login
126:
1.74 albertel 127: &Apache::loncommon::content_type($r,'text/html');
128: $r->header_out('Set-cookie' => $cookie);
129: $r->send_http_header;
1.1 albertel 130:
1.58 www 131: my %lt=&Apache::lonlocal::texthash(
132: 'wel' => 'Welcome',
1.92 bisitz 133: 'mes' => 'Welcome to the Learning<i>Online</i> Network with CAPA. Please wait while your session is being set up.',
134: 'pro' => 'Login problems?',
1.58 www 135: 'log' => 'loginproblems.html',
136: );
1.1 albertel 137: $r->print(<<ENDSUCCESS);
1.74 albertel 138: $start_page
1.19 www 139: $windowinfo
1.58 www 140: <h1>$lt{'wel'}</h1>
1.92 bisitz 141: $lt{'mes'}<p>
142: <a href="/adm/$lt{'log'}">$lt{'pro'}</a></p>
1.64 albertel 143: $continuelink
1.74 albertel 144: $end_page
1.1 albertel 145: ENDSUCCESS
146: }
147:
148: # --------------------------------------------------------------- Failed login!
149:
150: sub failed {
1.85 albertel 151: my ($r,$message,$form) = @_;
1.76 albertel 152: my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,
153: {'no_inline_link' => 1,});
1.100 raeburn 154: my $retry = '/adm/login?username='.$form->{'uname'}.
155: '&domain='.$form->{'udom'};
156: if (exists($form->{role})) {
157: $retry .= '&role='.$form->{role};
158: }
159: if (exists($form->{symb})) {
160: $retry .= '&symb='.$form->{symb};
161: }
1.74 albertel 162: my $end_page = &Apache::loncommon::end_page();
163: &Apache::loncommon::content_type($r,'text/html');
164: $r->send_http_header;
1.92 bisitz 165: $r->print(
166: $start_page
167: .'<h1>'.&mt('Sorry ...').'</h1>'
1.95 bisitz 168: .'<p class="LC_warning">'.&mt($message).'</p>'
1.100 raeburn 169: .'<p>'.&mt('Please [_1]log in again[_2].','<a href="'.$retry.'">','</a>')
1.92 bisitz 170: .'</p>'
171: .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
172: .$end_page
173: );
174: }
1.60 www 175:
1.55 www 176: # ------------------------------------------------------------------ Rerouting!
177:
178: sub reroute {
1.74 albertel 179: my ($r) = @_;
180: &Apache::loncommon::content_type($r,'text/html');
181: $r->send_http_header;
1.92 bisitz 182: my $msg='<h1>'.&mt('Sorry ...').'</h1>'
183: .&mt('Please [_1]log in again[_2].');
1.74 albertel 184: &Apache::loncommon::simple_error_page($r,'Rerouting',$msg);
1.55 www 185: }
186:
1.1 albertel 187: # ---------------------------------------------------------------- Main handler
188:
189: sub handler {
190: my $r = shift;
1.85 albertel 191: my $form;
1.55 www 192: # Are we re-routing?
193: if (-e '/home/httpd/html/lon-status/reroute.txt') {
194: &reroute($r);
195: return OK;
196: }
1.56 www 197:
1.57 www 198: &Apache::lonlocal::get_language_handle($r);
1.1 albertel 199:
1.59 www 200: # -------------------------------- Prevent users from attempting to login twice
1.89 albertel 201: my $handle = &Apache::lonnet::check_for_valid_session($r);
202: if ($handle ne '') {
1.59 www 203: # Indeed, a valid token is found
1.89 albertel 204: &Apache::loncommon::content_type($r,'text/html');
205: $r->send_http_header;
206: my $start_page =
207: &Apache::loncommon::start_page('Already logged in');
208: my $end_page =
209: &Apache::loncommon::end_page();
1.92 bisitz 210: $r->print(
211: $start_page
212: .'<h1>'.&mt('You are already logged in!').'</h1>'
1.97 hauer 213: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].'
1.92 bisitz 214: ,'<a href="/adm/roles">','</a>','<a href="/adm/logout">','</a>')
215: .'</p>'
216: .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
217: .$end_page
218: );
219: return OK;
1.59 www 220: }
221:
222: # ---------------------------------------------------- No valid token, continue
223:
224:
1.1 albertel 225: my $buffer;
1.84 albertel 226: if ($r->header_in('Content-length') > 0) {
227: $r->read($buffer,$r->header_in('Content-length'),0);
228: }
1.85 albertel 229: my %form;
230: foreach my $pair (split(/&/,$buffer)) {
231: my ($name,$value) = split(/=/,$pair);
1.7 www 232: $value =~ tr/+/ /;
233: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.85 albertel 234: $form{$name}=$value;
1.1 albertel 235: }
236:
1.85 albertel 237: if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) {
238: &failed($r,'Username, password and domain need to be specified.',
239: \%form);
1.1 albertel 240: return OK;
241: }
1.61 www 242:
243: # split user logging in and "su"-user
244:
1.85 albertel 245: ($form{'uname'},$form{'suname'})=split(/\:/,$form{'uname'});
1.87 albertel 246: $form{'uname'} = &LONCAPA::clean_username($form{'uname'});
247: $form{'suname'}= &LONCAPA::clean_username($form{'suname'});
248: $form{'udom'} = &LONCAPA::clean_domain( $form{'udom'});
1.1 albertel 249:
250: my $role = $r->dir_config('lonRole');
251: my $domain = $r->dir_config('lonDefDomain');
252: my $prodir = $r->dir_config('lonUsersDir');
1.93 raeburn 253: my $contact_name = &mt('LON-CAPA helpdesk');
1.1 albertel 254:
1.8 www 255: # ---------------------------------------- Get the information from login token
256:
1.85 albertel 257: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
258: $form{'serverid'});
1.8 www 259:
260: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
1.85 albertel 261: &failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form);
1.8 www 262: return OK;
1.44 www 263: } else {
1.85 albertel 264: my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'},
265: $form{'serverid'});
1.77 albertel 266: if ( $reply ne 'ok' ) {
1.85 albertel 267: &failed($r,'Session could not be opened.',\%form);
268: &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $form{'serverid'}." to get login token");
1.77 albertel 269: return OK;
1.44 www 270: }
1.8 www 271: }
1.100 raeburn 272:
1.93 raeburn 273: if (!&Apache::lonnet::domain($form{'udom'})) {
274: &failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form);
275: return OK;
276: }
1.100 raeburn 277:
278: my ($key,$firsturl,$rolestr,$symbstr)=split(/&/,$tmpinfo);
279: if ($rolestr) {
280: $rolestr = &unescape($rolestr);
281: }
282: if ($symbstr) {
283: $symbstr= &unescape($symbstr);
284: }
285: if ($rolestr =~ /^role=/) {
286: (undef,$form{'role'}) = split('=',$rolestr);
287: }
288: if ($symbstr =~ /^symb=/) {
289: (undef,$form{'symb'}) = split('=',$symbstr);
290: }
1.8 www 291:
292: my $keybin=pack("H16",$key);
293:
1.26 harris41 294: my $cipher;
295: if ($Crypt::DES::VERSION>=2.03) {
296: $cipher=new Crypt::DES $keybin;
297: }
298: else {
299: $cipher=new DES $keybin;
300: }
1.67 www 301: my $upass='';
302: for (my $i=0;$i<=2;$i++) {
303: my $chunk=
1.85 albertel 304: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},0,16))));
1.8 www 305:
1.67 www 306: $chunk.=
1.85 albertel 307: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},16,16))));
1.8 www 308:
1.67 www 309: $chunk=substr($chunk,1,ord(substr($chunk,0,1)));
310: $upass.=$chunk;
311: }
1.8 www 312:
1.1 albertel 313: # ---------------------------------------------------------------- Authenticate
1.91 raeburn 314: my @cancreate;
1.90 raeburn 315: my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
316: if (ref($domconfig{'usercreation'}) eq 'HASH') {
317: if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
1.91 raeburn 318: if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') {
319: @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}};
320: } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') &&
321: ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) {
322: @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'});
1.90 raeburn 323: }
324: }
325: }
326: my $defaultauth;
1.91 raeburn 327: if (grep(/^login$/,@cancreate)) {
1.90 raeburn 328: $defaultauth = 1;
329: }
330: my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass,
331: $form{'udom'},$defaultauth);
1.1 albertel 332:
333: # --------------------------------------------------------------------- Failed?
334:
335: if ($authhost eq 'no_host') {
1.85 albertel 336: &failed($r,'Username and/or password could not be authenticated.',
337: \%form);
1.1 albertel 338: return OK;
1.90 raeburn 339: } elsif ($authhost eq 'no_account_on_host') {
340: my %domconfig =
341: &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
1.91 raeburn 342: if (grep(/^login$/,@cancreate)) {
1.90 raeburn 343: my $start_page =
344: &Apache::loncommon::start_page('Create a user account in LON-CAPA',
345: '',{'no_inline_link' => 1,});
346: my $domdesc = &Apache::lonnet::domain($form{'udom'},'description');
1.93 raeburn 347: my $lonhost = $r->dir_config('lonHostID');
348: my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
349: my $contacts =
350: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
351: $form{'udom'},$origmail);
352: my ($contact_email) = split(',',$contacts);
1.94 raeburn 353: my $output = &Apache::createaccount::username_check($form{'uname'},
354: $form{'udom'},$domdesc,'',
355: $lonhost,$contact_email,$contact_name);
1.90 raeburn 356: &Apache::loncommon::content_type($r,'text/html');
357: $r->send_http_header;
358: &Apache::createaccount::print_header($r,$start_page);
1.94 raeburn 359: $r->print('<h3>'.&mt('Account creation').'</h3>'.
360: &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'<br />'.
361: $output.&Apache::loncommon::end_page());
1.90 raeburn 362: return OK;
363: } else {
364: &failed($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);
365: return OK;
366: }
1.1 albertel 367: }
368:
1.59 www 369: if (($firsturl eq '') ||
370: ($firsturl=~/^\/adm\/(logout|remote)/)) {
1.24 www 371: $firsturl='/adm/roles';
1.7 www 372: }
1.61 www 373: # --------------------------------- Are we attempting to login as somebody else?
1.85 albertel 374: if ($form{'suname'}) {
1.61 www 375: # ------------ see if the original user has enough privileges to pull this stunt
1.85 albertel 376: if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'})) {
1.61 www 377: # ---------------------------------------------------- see if the su-user exists
1.85 albertel 378: unless (&Apache::lonnet::homeserver($form{'suname'},$form{'udom'})
1.61 www 379: eq 'no_host') {
1.85 albertel 380: &Apache::lonnet::logthis(&Apache::lonnet::homeserver($form{'suname'},$form{'udom'}));
1.61 www 381: # ------------------------------ see if the su-user is not too highly privileged
1.85 albertel 382: unless (&Apache::lonnet::privileged($form{'suname'},$form{'udom'})) {
1.61 www 383: # -------------------------------------------------------- actually switch users
1.85 albertel 384: &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.$form{'udom'}.
385: ' logging in as '.$form{'suname'});
386: $form{'uname'}=$form{'suname'};
1.61 www 387: } else {
388: &Apache::lonnet::logthis('Attempted switch user to privileged user');
389: }
390: }
391: } else {
392: &Apache::lonnet::logthis('Non-privileged user attempting switch user');
393: }
394: }
1.85 albertel 395:
1.81 albertel 396: if ($r->dir_config("lonBalancer") eq 'yes') {
1.85 albertel 397: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
398: \%form);
1.81 albertel 399: $r->internal_redirect('/adm/switchserver');
400: } else {
1.85 albertel 401: &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef,
402: \%form);
1.81 albertel 403: }
1.1 albertel 404: return OK;
405: }
406:
407: 1;
408: __END__
1.7 www 409:
410:
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