Annotation of loncom/auth/lonauth.pm, revision 1.103
1.1 albertel 1: # The LearningOnline Network
2: # User Authentication Module
1.27 www 3: #
1.103 ! raeburn 4: # $Id: lonauth.pm,v 1.102 2010/03/10 21:25:29 droeschl 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 '') {
1.103 ! raeburn 203: my $lonidsdir=$r->dir_config('lonIDsDir');
! 204: if ($handle=~/^publicuser\_/) {
! 205: # For "public user" - remove it, we apparently really want to login
! 206: unlink($r->dir_config('lonIDsDir')."/$handle.id");
! 207: } else {
1.59 www 208: # Indeed, a valid token is found
1.103 ! raeburn 209: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
! 210: &Apache::loncommon::content_type($r,'text/html');
! 211: $r->send_http_header;
! 212: my $start_page =
! 213: &Apache::loncommon::start_page('Already logged in');
! 214: my $end_page =
! 215: &Apache::loncommon::end_page();
! 216: $r->print(
! 217: $start_page
! 218: .'<h1>'.&mt('You are already logged in!').'</h1>'
! 219: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].'
1.92 bisitz 220: ,'<a href="/adm/roles">','</a>','<a href="/adm/logout">','</a>')
1.103 ! raeburn 221: .'</p>'
! 222: .$end_page
! 223: );
! 224: return OK;
! 225: }
1.59 www 226: }
227:
228: # ---------------------------------------------------- No valid token, continue
229:
230:
1.1 albertel 231: my $buffer;
1.84 albertel 232: if ($r->header_in('Content-length') > 0) {
233: $r->read($buffer,$r->header_in('Content-length'),0);
234: }
1.85 albertel 235: my %form;
236: foreach my $pair (split(/&/,$buffer)) {
237: my ($name,$value) = split(/=/,$pair);
1.7 www 238: $value =~ tr/+/ /;
239: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.85 albertel 240: $form{$name}=$value;
1.1 albertel 241: }
242:
1.85 albertel 243: if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) {
244: &failed($r,'Username, password and domain need to be specified.',
245: \%form);
1.1 albertel 246: return OK;
247: }
1.61 www 248:
249: # split user logging in and "su"-user
250:
1.85 albertel 251: ($form{'uname'},$form{'suname'})=split(/\:/,$form{'uname'});
1.87 albertel 252: $form{'uname'} = &LONCAPA::clean_username($form{'uname'});
253: $form{'suname'}= &LONCAPA::clean_username($form{'suname'});
254: $form{'udom'} = &LONCAPA::clean_domain( $form{'udom'});
1.1 albertel 255:
256: my $role = $r->dir_config('lonRole');
257: my $domain = $r->dir_config('lonDefDomain');
258: my $prodir = $r->dir_config('lonUsersDir');
1.93 raeburn 259: my $contact_name = &mt('LON-CAPA helpdesk');
1.1 albertel 260:
1.8 www 261: # ---------------------------------------- Get the information from login token
262:
1.85 albertel 263: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
264: $form{'serverid'});
1.8 www 265:
266: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
1.85 albertel 267: &failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form);
1.8 www 268: return OK;
1.44 www 269: } else {
1.85 albertel 270: my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'},
271: $form{'serverid'});
1.77 albertel 272: if ( $reply ne 'ok' ) {
1.85 albertel 273: &failed($r,'Session could not be opened.',\%form);
274: &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $form{'serverid'}." to get login token");
1.77 albertel 275: return OK;
1.44 www 276: }
1.8 www 277: }
1.100 raeburn 278:
1.93 raeburn 279: if (!&Apache::lonnet::domain($form{'udom'})) {
280: &failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form);
281: return OK;
282: }
1.100 raeburn 283:
284: my ($key,$firsturl,$rolestr,$symbstr)=split(/&/,$tmpinfo);
285: if ($rolestr) {
286: $rolestr = &unescape($rolestr);
287: }
288: if ($symbstr) {
289: $symbstr= &unescape($symbstr);
290: }
291: if ($rolestr =~ /^role=/) {
292: (undef,$form{'role'}) = split('=',$rolestr);
293: }
294: if ($symbstr =~ /^symb=/) {
295: (undef,$form{'symb'}) = split('=',$symbstr);
296: }
1.8 www 297:
298: my $keybin=pack("H16",$key);
299:
1.26 harris41 300: my $cipher;
301: if ($Crypt::DES::VERSION>=2.03) {
302: $cipher=new Crypt::DES $keybin;
303: }
304: else {
305: $cipher=new DES $keybin;
306: }
1.67 www 307: my $upass='';
308: for (my $i=0;$i<=2;$i++) {
309: my $chunk=
1.85 albertel 310: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},0,16))));
1.8 www 311:
1.67 www 312: $chunk.=
1.85 albertel 313: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},16,16))));
1.8 www 314:
1.67 www 315: $chunk=substr($chunk,1,ord(substr($chunk,0,1)));
316: $upass.=$chunk;
317: }
1.8 www 318:
1.1 albertel 319: # ---------------------------------------------------------------- Authenticate
1.91 raeburn 320: my @cancreate;
1.90 raeburn 321: my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
322: if (ref($domconfig{'usercreation'}) eq 'HASH') {
323: if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
1.91 raeburn 324: if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') {
325: @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}};
326: } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') &&
327: ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) {
328: @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'});
1.90 raeburn 329: }
330: }
331: }
332: my $defaultauth;
1.91 raeburn 333: if (grep(/^login$/,@cancreate)) {
1.90 raeburn 334: $defaultauth = 1;
335: }
336: my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass,
337: $form{'udom'},$defaultauth);
1.1 albertel 338:
339: # --------------------------------------------------------------------- Failed?
340:
341: if ($authhost eq 'no_host') {
1.85 albertel 342: &failed($r,'Username and/or password could not be authenticated.',
343: \%form);
1.1 albertel 344: return OK;
1.90 raeburn 345: } elsif ($authhost eq 'no_account_on_host') {
346: my %domconfig =
347: &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
1.91 raeburn 348: if (grep(/^login$/,@cancreate)) {
1.90 raeburn 349: my $start_page =
350: &Apache::loncommon::start_page('Create a user account in LON-CAPA',
351: '',{'no_inline_link' => 1,});
352: my $domdesc = &Apache::lonnet::domain($form{'udom'},'description');
1.93 raeburn 353: my $lonhost = $r->dir_config('lonHostID');
354: my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
355: my $contacts =
356: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
357: $form{'udom'},$origmail);
358: my ($contact_email) = split(',',$contacts);
1.94 raeburn 359: my $output = &Apache::createaccount::username_check($form{'uname'},
360: $form{'udom'},$domdesc,'',
361: $lonhost,$contact_email,$contact_name);
1.90 raeburn 362: &Apache::loncommon::content_type($r,'text/html');
363: $r->send_http_header;
364: &Apache::createaccount::print_header($r,$start_page);
1.94 raeburn 365: $r->print('<h3>'.&mt('Account creation').'</h3>'.
366: &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'<br />'.
367: $output.&Apache::loncommon::end_page());
1.90 raeburn 368: return OK;
369: } else {
370: &failed($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);
371: return OK;
372: }
1.1 albertel 373: }
374:
1.59 www 375: if (($firsturl eq '') ||
376: ($firsturl=~/^\/adm\/(logout|remote)/)) {
1.24 www 377: $firsturl='/adm/roles';
1.7 www 378: }
1.61 www 379: # --------------------------------- Are we attempting to login as somebody else?
1.85 albertel 380: if ($form{'suname'}) {
1.61 www 381: # ------------ see if the original user has enough privileges to pull this stunt
1.85 albertel 382: if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'})) {
1.61 www 383: # ---------------------------------------------------- see if the su-user exists
1.85 albertel 384: unless (&Apache::lonnet::homeserver($form{'suname'},$form{'udom'})
1.61 www 385: eq 'no_host') {
1.85 albertel 386: &Apache::lonnet::logthis(&Apache::lonnet::homeserver($form{'suname'},$form{'udom'}));
1.61 www 387: # ------------------------------ see if the su-user is not too highly privileged
1.85 albertel 388: unless (&Apache::lonnet::privileged($form{'suname'},$form{'udom'})) {
1.61 www 389: # -------------------------------------------------------- actually switch users
1.85 albertel 390: &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.$form{'udom'}.
391: ' logging in as '.$form{'suname'});
392: $form{'uname'}=$form{'suname'};
1.61 www 393: } else {
394: &Apache::lonnet::logthis('Attempted switch user to privileged user');
395: }
396: }
397: } else {
398: &Apache::lonnet::logthis('Non-privileged user attempting switch user');
399: }
400: }
1.85 albertel 401:
1.81 albertel 402: if ($r->dir_config("lonBalancer") eq 'yes') {
1.85 albertel 403: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
404: \%form);
1.81 albertel 405: $r->internal_redirect('/adm/switchserver');
406: } else {
1.85 albertel 407: &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef,
408: \%form);
1.81 albertel 409: }
1.1 albertel 410: return OK;
411: }
412:
413: 1;
414: __END__
1.7 www 415:
416:
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