Annotation of loncom/auth/lonauth.pm, revision 1.90
1.1 albertel 1: # The LearningOnline Network
2: # User Authentication Module
1.27 www 3: #
1.90 ! raeburn 4: # $Id: lonauth.pm,v 1.89 2007/10/01 23:56:14 albertel 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',
99: 'mes' => 'Welcome to the Learning<i>Online</i> Network with CAPA. Please wait while your session is being set up',
100: 'pro' => 'Problems',
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>
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:
1.88 albertel 125: $message = &mt($message);
1.74 albertel 126: my %lt=('sorry' => &mt('Sorry ...'),
127: 'please' =>
128: &mt('Please [_1]log in again[_2].',
1.85 albertel 129: "<a href=\"/adm/login?username=$form->{'uname'}&domain=$form->{'udom'}\">",
1.74 albertel 130: '</a>'),
131: 'problemspage' => &mt('loginproblems.html'),
132: 'problems' => 'Problems',
133: );
134: &Apache::loncommon::content_type($r,'text/html');
135: $r->send_http_header;
1.1 albertel 136:
137: $r->print(<<ENDFAILED);
1.74 albertel 138: $start_page
139: <h1>$lt{'sorry'}</h1>
1.43 www 140: <p><b>$message</b></p>
1.74 albertel 141: <p>$lt{'please'}</p>
1.43 www 142: <p>
1.74 albertel 143: <a href="/adm/$lt{'problemspage'}">$lt{'problems'}</a></p>
144: $end_page
1.1 albertel 145: ENDFAILED
1.60 www 146: }
147:
1.55 www 148: # ------------------------------------------------------------------ Rerouting!
149:
150: sub reroute {
1.74 albertel 151: my ($r) = @_;
152: &Apache::loncommon::content_type($r,'text/html');
153: $r->send_http_header;
154: my $msg='<h1>Sorry ...</h1>
155: Please <a href="/">log in again</a>.';
156: &Apache::loncommon::simple_error_page($r,'Rerouting',$msg);
1.55 www 157: }
158:
1.1 albertel 159: # ---------------------------------------------------------------- Main handler
160:
161: sub handler {
162: my $r = shift;
1.85 albertel 163: my $form;
1.55 www 164: # Are we re-routing?
165: if (-e '/home/httpd/html/lon-status/reroute.txt') {
166: &reroute($r);
167: return OK;
168: }
1.56 www 169:
1.57 www 170: &Apache::lonlocal::get_language_handle($r);
1.1 albertel 171:
1.59 www 172: # -------------------------------- Prevent users from attempting to login twice
1.89 albertel 173: my $handle = &Apache::lonnet::check_for_valid_session($r);
174: if ($handle ne '') {
1.59 www 175: # Indeed, a valid token is found
1.89 albertel 176: &Apache::loncommon::content_type($r,'text/html');
177: $r->send_http_header;
178: my $start_page =
179: &Apache::loncommon::start_page('Already logged in');
180: my $end_page =
181: &Apache::loncommon::end_page();
182: $r->print(<<ENDFAILED);
1.74 albertel 183: $start_page
1.59 www 184: <h1>You are already logged in</h1>
185: <p>Please either <a href="/adm/roles">continue the current session</a> or
186: <a href="/adm/logout">logout</a>.</p>
187: <p>
188: <a href="/adm/loginproblems.html">Problems?</a></p>
1.74 albertel 189: $end_page
1.59 www 190: ENDFAILED
1.89 albertel 191: return OK;
1.59 www 192: }
193:
194: # ---------------------------------------------------- No valid token, continue
195:
196:
1.1 albertel 197: my $buffer;
1.84 albertel 198: if ($r->header_in('Content-length') > 0) {
199: $r->read($buffer,$r->header_in('Content-length'),0);
200: }
1.85 albertel 201: my %form;
202: foreach my $pair (split(/&/,$buffer)) {
203: my ($name,$value) = split(/=/,$pair);
1.7 www 204: $value =~ tr/+/ /;
205: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.85 albertel 206: $form{$name}=$value;
1.1 albertel 207: }
208:
1.85 albertel 209: if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) {
210: &failed($r,'Username, password and domain need to be specified.',
211: \%form);
1.1 albertel 212: return OK;
213: }
1.61 www 214:
215: # split user logging in and "su"-user
216:
1.85 albertel 217: ($form{'uname'},$form{'suname'})=split(/\:/,$form{'uname'});
1.87 albertel 218: $form{'uname'} = &LONCAPA::clean_username($form{'uname'});
219: $form{'suname'}= &LONCAPA::clean_username($form{'suname'});
220: $form{'udom'} = &LONCAPA::clean_domain( $form{'udom'});
1.1 albertel 221:
222: my $role = $r->dir_config('lonRole');
223: my $domain = $r->dir_config('lonDefDomain');
224: my $prodir = $r->dir_config('lonUsersDir');
225:
1.8 www 226: # ---------------------------------------- Get the information from login token
227:
1.85 albertel 228: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
229: $form{'serverid'});
1.8 www 230:
231: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
1.85 albertel 232: &failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form);
1.8 www 233: return OK;
1.44 www 234: } else {
1.85 albertel 235: my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'},
236: $form{'serverid'});
1.77 albertel 237: if ( $reply ne 'ok' ) {
1.85 albertel 238: &failed($r,'Session could not be opened.',\%form);
239: &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $form{'serverid'}." to get login token");
1.77 albertel 240: return OK;
1.44 www 241: }
1.8 www 242: }
1.9 www 243: my ($key,$firsturl)=split(/&/,$tmpinfo);
1.8 www 244:
245: my $keybin=pack("H16",$key);
246:
1.26 harris41 247: my $cipher;
248: if ($Crypt::DES::VERSION>=2.03) {
249: $cipher=new Crypt::DES $keybin;
250: }
251: else {
252: $cipher=new DES $keybin;
253: }
1.67 www 254: my $upass='';
255: for (my $i=0;$i<=2;$i++) {
256: my $chunk=
1.85 albertel 257: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},0,16))));
1.8 www 258:
1.67 www 259: $chunk.=
1.85 albertel 260: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},16,16))));
1.8 www 261:
1.67 www 262: $chunk=substr($chunk,1,ord(substr($chunk,0,1)));
263: $upass.=$chunk;
264: }
1.8 www 265:
1.1 albertel 266: # ---------------------------------------------------------------- Authenticate
1.90 ! raeburn 267: my $cancreate;
! 268: my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
! 269: if (ref($domconfig{'usercreation'}) eq 'HASH') {
! 270: if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
! 271: if ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') {
! 272: $cancreate = $domconfig{'usercreation'}{'cancreate'}{'selfcreate'};
! 273: }
! 274: }
! 275: }
! 276: my $defaultauth;
! 277: if ($cancreate eq 'any' || $cancreate eq 'login') {
! 278: $defaultauth = 1;
! 279: }
! 280: my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass,
! 281: $form{'udom'},$defaultauth);
1.1 albertel 282:
283: # --------------------------------------------------------------------- Failed?
284:
285: if ($authhost eq 'no_host') {
1.85 albertel 286: &failed($r,'Username and/or password could not be authenticated.',
287: \%form);
1.1 albertel 288: return OK;
1.90 ! raeburn 289: } elsif ($authhost eq 'no_account_on_host') {
! 290: my $cancreate;
! 291: my %domconfig =
! 292: &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
! 293: if (ref($domconfig{'usercreation'}) eq 'HASH') {
! 294: if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
! 295: if ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') {
! 296: $cancreate = $domconfig{'usercreation'}{'cancreate'}{'selfcreate'};
! 297: }
! 298: }
! 299: }
! 300: if ($cancreate eq 'any' || $cancreate eq 'login') {
! 301: my $start_page =
! 302: &Apache::loncommon::start_page('Create a user account in LON-CAPA',
! 303: '',{'no_inline_link' => 1,});
! 304: my $domdesc = &Apache::lonnet::domain($form{'udom'},'description');
! 305: my $output = &Apache::createaccount::username_check($form{'uname'},
! 306: $form{'udom'},$domdesc);
! 307: &Apache::loncommon::content_type($r,'text/html');
! 308: $r->send_http_header;
! 309: &Apache::createaccount::print_header($r,$start_page);
! 310: $r->print($output);
! 311: $r->print(&Apache::loncommon::end_page());
! 312: return OK;
! 313: } else {
! 314: &failed($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);
! 315: return OK;
! 316: }
1.1 albertel 317: }
318:
1.59 www 319: if (($firsturl eq '') ||
320: ($firsturl=~/^\/adm\/(logout|remote)/)) {
1.24 www 321: $firsturl='/adm/roles';
1.7 www 322: }
1.61 www 323: # --------------------------------- Are we attempting to login as somebody else?
1.85 albertel 324: if ($form{'suname'}) {
1.61 www 325: # ------------ see if the original user has enough privileges to pull this stunt
1.85 albertel 326: if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'})) {
1.61 www 327: # ---------------------------------------------------- see if the su-user exists
1.85 albertel 328: unless (&Apache::lonnet::homeserver($form{'suname'},$form{'udom'})
1.61 www 329: eq 'no_host') {
1.85 albertel 330: &Apache::lonnet::logthis(&Apache::lonnet::homeserver($form{'suname'},$form{'udom'}));
1.61 www 331: # ------------------------------ see if the su-user is not too highly privileged
1.85 albertel 332: unless (&Apache::lonnet::privileged($form{'suname'},$form{'udom'})) {
1.61 www 333: # -------------------------------------------------------- actually switch users
1.85 albertel 334: &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.$form{'udom'}.
335: ' logging in as '.$form{'suname'});
336: $form{'uname'}=$form{'suname'};
1.61 www 337: } else {
338: &Apache::lonnet::logthis('Attempted switch user to privileged user');
339: }
340: }
341: } else {
342: &Apache::lonnet::logthis('Non-privileged user attempting switch user');
343: }
344: }
1.85 albertel 345:
1.81 albertel 346: if ($r->dir_config("lonBalancer") eq 'yes') {
1.85 albertel 347: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
348: \%form);
1.81 albertel 349: $r->internal_redirect('/adm/switchserver');
350: } else {
1.85 albertel 351: &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef,
352: \%form);
1.81 albertel 353: }
1.1 albertel 354: return OK;
355: }
356:
357: 1;
358: __END__
1.7 www 359:
360:
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