Annotation of loncom/auth/lonauth.pm, revision 1.104
1.1 albertel 1: # The LearningOnline Network
2: # User Authentication Module
1.27 www 3: #
1.104 ! droeschl 4: # $Id: lonauth.pm,v 1.103 2010/03/17 17:51:06 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,
1.104 ! droeschl 120: {'bread_crumbs' => $brcrum,});
1.74 albertel 121: my $end_page =&Apache::loncommon::end_page();
122:
1.102 droeschl 123: my $continuelink='<a href="'.$destination.'">'.&mt('Continue').'</a>';
1.5 www 124: # ------------------------------------------------- Output for successful login
125:
1.74 albertel 126: &Apache::loncommon::content_type($r,'text/html');
127: $r->header_out('Set-cookie' => $cookie);
128: $r->send_http_header;
1.1 albertel 129:
1.58 www 130: my %lt=&Apache::lonlocal::texthash(
131: 'wel' => 'Welcome',
1.92 bisitz 132: 'mes' => 'Welcome to the Learning<i>Online</i> Network with CAPA. Please wait while your session is being set up.',
133: 'pro' => 'Login problems?',
1.58 www 134: 'log' => 'loginproblems.html',
135: );
1.1 albertel 136: $r->print(<<ENDSUCCESS);
1.74 albertel 137: $start_page
1.19 www 138: $windowinfo
1.58 www 139: <h1>$lt{'wel'}</h1>
1.92 bisitz 140: $lt{'mes'}<p>
141: <a href="/adm/$lt{'log'}">$lt{'pro'}</a></p>
1.64 albertel 142: $continuelink
1.74 albertel 143: $end_page
1.1 albertel 144: ENDSUCCESS
145: }
146:
147: # --------------------------------------------------------------- Failed login!
148:
149: sub failed {
1.85 albertel 150: my ($r,$message,$form) = @_;
1.104 ! droeschl 151: my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef);
1.100 raeburn 152: my $retry = '/adm/login?username='.$form->{'uname'}.
153: '&domain='.$form->{'udom'};
154: if (exists($form->{role})) {
155: $retry .= '&role='.$form->{role};
156: }
157: if (exists($form->{symb})) {
158: $retry .= '&symb='.$form->{symb};
159: }
1.74 albertel 160: my $end_page = &Apache::loncommon::end_page();
161: &Apache::loncommon::content_type($r,'text/html');
162: $r->send_http_header;
1.92 bisitz 163: $r->print(
164: $start_page
165: .'<h1>'.&mt('Sorry ...').'</h1>'
1.95 bisitz 166: .'<p class="LC_warning">'.&mt($message).'</p>'
1.100 raeburn 167: .'<p>'.&mt('Please [_1]log in again[_2].','<a href="'.$retry.'">','</a>')
1.92 bisitz 168: .'</p>'
169: .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
170: .$end_page
171: );
172: }
1.60 www 173:
1.55 www 174: # ------------------------------------------------------------------ Rerouting!
175:
176: sub reroute {
1.74 albertel 177: my ($r) = @_;
178: &Apache::loncommon::content_type($r,'text/html');
179: $r->send_http_header;
1.92 bisitz 180: my $msg='<h1>'.&mt('Sorry ...').'</h1>'
181: .&mt('Please [_1]log in again[_2].');
1.74 albertel 182: &Apache::loncommon::simple_error_page($r,'Rerouting',$msg);
1.55 www 183: }
184:
1.1 albertel 185: # ---------------------------------------------------------------- Main handler
186:
187: sub handler {
188: my $r = shift;
1.85 albertel 189: my $form;
1.55 www 190: # Are we re-routing?
191: if (-e '/home/httpd/html/lon-status/reroute.txt') {
192: &reroute($r);
193: return OK;
194: }
1.56 www 195:
1.57 www 196: &Apache::lonlocal::get_language_handle($r);
1.1 albertel 197:
1.59 www 198: # -------------------------------- Prevent users from attempting to login twice
1.89 albertel 199: my $handle = &Apache::lonnet::check_for_valid_session($r);
200: if ($handle ne '') {
1.103 raeburn 201: my $lonidsdir=$r->dir_config('lonIDsDir');
202: if ($handle=~/^publicuser\_/) {
203: # For "public user" - remove it, we apparently really want to login
204: unlink($r->dir_config('lonIDsDir')."/$handle.id");
205: } else {
1.59 www 206: # Indeed, a valid token is found
1.103 raeburn 207: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
208: &Apache::loncommon::content_type($r,'text/html');
209: $r->send_http_header;
210: my $start_page =
211: &Apache::loncommon::start_page('Already logged in');
212: my $end_page =
213: &Apache::loncommon::end_page();
214: $r->print(
215: $start_page
216: .'<h1>'.&mt('You are already logged in!').'</h1>'
217: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].'
1.92 bisitz 218: ,'<a href="/adm/roles">','</a>','<a href="/adm/logout">','</a>')
1.103 raeburn 219: .'</p>'
220: .$end_page
221: );
222: return OK;
223: }
1.59 www 224: }
225:
226: # ---------------------------------------------------- No valid token, continue
227:
228:
1.1 albertel 229: my $buffer;
1.84 albertel 230: if ($r->header_in('Content-length') > 0) {
231: $r->read($buffer,$r->header_in('Content-length'),0);
232: }
1.85 albertel 233: my %form;
234: foreach my $pair (split(/&/,$buffer)) {
235: my ($name,$value) = split(/=/,$pair);
1.7 www 236: $value =~ tr/+/ /;
237: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.85 albertel 238: $form{$name}=$value;
1.1 albertel 239: }
240:
1.85 albertel 241: if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) {
242: &failed($r,'Username, password and domain need to be specified.',
243: \%form);
1.1 albertel 244: return OK;
245: }
1.61 www 246:
247: # split user logging in and "su"-user
248:
1.85 albertel 249: ($form{'uname'},$form{'suname'})=split(/\:/,$form{'uname'});
1.87 albertel 250: $form{'uname'} = &LONCAPA::clean_username($form{'uname'});
251: $form{'suname'}= &LONCAPA::clean_username($form{'suname'});
252: $form{'udom'} = &LONCAPA::clean_domain( $form{'udom'});
1.1 albertel 253:
254: my $role = $r->dir_config('lonRole');
255: my $domain = $r->dir_config('lonDefDomain');
256: my $prodir = $r->dir_config('lonUsersDir');
1.93 raeburn 257: my $contact_name = &mt('LON-CAPA helpdesk');
1.1 albertel 258:
1.8 www 259: # ---------------------------------------- Get the information from login token
260:
1.85 albertel 261: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
262: $form{'serverid'});
1.8 www 263:
264: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
1.85 albertel 265: &failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form);
1.8 www 266: return OK;
1.44 www 267: } else {
1.85 albertel 268: my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'},
269: $form{'serverid'});
1.77 albertel 270: if ( $reply ne 'ok' ) {
1.85 albertel 271: &failed($r,'Session could not be opened.',\%form);
272: &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $form{'serverid'}." to get login token");
1.77 albertel 273: return OK;
1.44 www 274: }
1.8 www 275: }
1.100 raeburn 276:
1.93 raeburn 277: if (!&Apache::lonnet::domain($form{'udom'})) {
278: &failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form);
279: return OK;
280: }
1.100 raeburn 281:
282: my ($key,$firsturl,$rolestr,$symbstr)=split(/&/,$tmpinfo);
283: if ($rolestr) {
284: $rolestr = &unescape($rolestr);
285: }
286: if ($symbstr) {
287: $symbstr= &unescape($symbstr);
288: }
289: if ($rolestr =~ /^role=/) {
290: (undef,$form{'role'}) = split('=',$rolestr);
291: }
292: if ($symbstr =~ /^symb=/) {
293: (undef,$form{'symb'}) = split('=',$symbstr);
294: }
1.8 www 295:
296: my $keybin=pack("H16",$key);
297:
1.26 harris41 298: my $cipher;
299: if ($Crypt::DES::VERSION>=2.03) {
300: $cipher=new Crypt::DES $keybin;
301: }
302: else {
303: $cipher=new DES $keybin;
304: }
1.67 www 305: my $upass='';
306: for (my $i=0;$i<=2;$i++) {
307: my $chunk=
1.85 albertel 308: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},0,16))));
1.8 www 309:
1.67 www 310: $chunk.=
1.85 albertel 311: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},16,16))));
1.8 www 312:
1.67 www 313: $chunk=substr($chunk,1,ord(substr($chunk,0,1)));
314: $upass.=$chunk;
315: }
1.8 www 316:
1.1 albertel 317: # ---------------------------------------------------------------- Authenticate
1.91 raeburn 318: my @cancreate;
1.90 raeburn 319: my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
320: if (ref($domconfig{'usercreation'}) eq 'HASH') {
321: if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
1.91 raeburn 322: if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') {
323: @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}};
324: } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') &&
325: ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) {
326: @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'});
1.90 raeburn 327: }
328: }
329: }
330: my $defaultauth;
1.91 raeburn 331: if (grep(/^login$/,@cancreate)) {
1.90 raeburn 332: $defaultauth = 1;
333: }
334: my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass,
335: $form{'udom'},$defaultauth);
1.1 albertel 336:
337: # --------------------------------------------------------------------- Failed?
338:
339: if ($authhost eq 'no_host') {
1.85 albertel 340: &failed($r,'Username and/or password could not be authenticated.',
341: \%form);
1.1 albertel 342: return OK;
1.90 raeburn 343: } elsif ($authhost eq 'no_account_on_host') {
344: my %domconfig =
345: &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
1.91 raeburn 346: if (grep(/^login$/,@cancreate)) {
1.90 raeburn 347: my $start_page =
1.104 ! droeschl 348: &Apache::loncommon::start_page('Create a user account in LON-CAPA');
1.90 raeburn 349: my $domdesc = &Apache::lonnet::domain($form{'udom'},'description');
1.93 raeburn 350: my $lonhost = $r->dir_config('lonHostID');
351: my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
352: my $contacts =
353: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
354: $form{'udom'},$origmail);
355: my ($contact_email) = split(',',$contacts);
1.94 raeburn 356: my $output = &Apache::createaccount::username_check($form{'uname'},
357: $form{'udom'},$domdesc,'',
358: $lonhost,$contact_email,$contact_name);
1.90 raeburn 359: &Apache::loncommon::content_type($r,'text/html');
360: $r->send_http_header;
361: &Apache::createaccount::print_header($r,$start_page);
1.94 raeburn 362: $r->print('<h3>'.&mt('Account creation').'</h3>'.
363: &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'<br />'.
364: $output.&Apache::loncommon::end_page());
1.90 raeburn 365: return OK;
366: } else {
367: &failed($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);
368: return OK;
369: }
1.1 albertel 370: }
371:
1.59 www 372: if (($firsturl eq '') ||
373: ($firsturl=~/^\/adm\/(logout|remote)/)) {
1.24 www 374: $firsturl='/adm/roles';
1.7 www 375: }
1.61 www 376: # --------------------------------- Are we attempting to login as somebody else?
1.85 albertel 377: if ($form{'suname'}) {
1.61 www 378: # ------------ see if the original user has enough privileges to pull this stunt
1.85 albertel 379: if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'})) {
1.61 www 380: # ---------------------------------------------------- see if the su-user exists
1.85 albertel 381: unless (&Apache::lonnet::homeserver($form{'suname'},$form{'udom'})
1.61 www 382: eq 'no_host') {
1.85 albertel 383: &Apache::lonnet::logthis(&Apache::lonnet::homeserver($form{'suname'},$form{'udom'}));
1.61 www 384: # ------------------------------ see if the su-user is not too highly privileged
1.85 albertel 385: unless (&Apache::lonnet::privileged($form{'suname'},$form{'udom'})) {
1.61 www 386: # -------------------------------------------------------- actually switch users
1.85 albertel 387: &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.$form{'udom'}.
388: ' logging in as '.$form{'suname'});
389: $form{'uname'}=$form{'suname'};
1.61 www 390: } else {
391: &Apache::lonnet::logthis('Attempted switch user to privileged user');
392: }
393: }
394: } else {
395: &Apache::lonnet::logthis('Non-privileged user attempting switch user');
396: }
397: }
1.85 albertel 398:
1.81 albertel 399: if ($r->dir_config("lonBalancer") eq 'yes') {
1.85 albertel 400: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
401: \%form);
1.81 albertel 402: $r->internal_redirect('/adm/switchserver');
403: } else {
1.85 albertel 404: &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef,
405: \%form);
1.81 albertel 406: }
1.1 albertel 407: return OK;
408: }
409:
410: 1;
411: __END__
1.7 www 412:
413:
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