Auth.pm 19 KB
Newer Older
1
2
3
4
# -*- indent-tabs-mode: nil; -*-
# vim:ft=perl:et:sw=4
# $Id$

salaun's avatar
salaun committed
5
# Sympa - SYsteme de Multi-Postage Automatique
6
7
8
9
10
#
# Copyright (c) 1997, 1998, 1999 Institut Pasteur & Christophe Wolfhugel
# Copyright (c) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
# 2006, 2007, 2008, 2009, 2010, 2011 Comite Reseau des Universites
# Copyright (c) 2011, 2012, 2013, 2014 GIP RENATER
salaun's avatar
salaun committed
11
12
13
14
15
16
17
18
19
20
21
22
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
23
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
salaun's avatar
salaun committed
24

25
package Sympa::Auth;
salaun's avatar
salaun committed
26

27
28
use strict;
use warnings;
29
use Digest::MD5;
30
use POSIX qw();
salaun's avatar
salaun committed
31
32

use Conf;
33
use Sympa::LDAPSource;
34
use Log;
35
36
use Sympa::Report;
use Sympa::Robot;
37
use SDM;
38
use Sympa::Session;
39
use tools;
40
41
use Sympa::Tools::Data;
use Sympa::Tools::Time;
42
use Sympa::User;
salaun's avatar
salaun committed
43

44
45
46
## return the password finger print (this proc allow futur replacement of md5
## by sha1 or ....)
sub password_fingerprint {
47

48
    Log::do_log('debug', '');
49
50

    my $pwd = shift;
51
    if (Conf::get_robot_conf('*', 'password_case') eq 'insensitive') {
52
        return Digest::MD5::md5_hex(lc($pwd));
53
    } else {
54
        return Digest::MD5::md5_hex($pwd);
55
    }
56
57
}

58
## authentication : via email or uid
59
60
61
62
sub check_auth {
    my $robot = shift;
    my $auth  = shift;    ## User email or UID
    my $pwd   = shift;    ## Password
63
    Log::do_log('debug', '(%s)', $auth);
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90

    my ($canonic, $user);

    if (tools::valid_email($auth)) {
        return authentication($robot, $auth, $pwd);
    } else {
        ## This is an UID
        foreach my $ldap (@{$Conf::Conf{'auth_services'}{$robot}}) {
            # only ldap service are to be applied here
            next unless ($ldap->{'auth_type'} eq 'ldap');

            $canonic =
                ldap_authentication($robot, $ldap, $auth, $pwd, 'uid_filter');
            last if ($canonic);    ## Stop at first match
        }
        if ($canonic) {

            unless ($user = Sympa::User::get_global_user($canonic)) {
                $user = {'email' => $canonic};
            }
            return {
                'user'       => $user,
                'auth'       => 'ldap',
                'alt_emails' => {$canonic => 'ldap'}
            };

        } else {
91
            Sympa::Report::reject_report_web('user', 'incorrect_passwd', {})
92
93
94
95
96
97
                unless ($ENV{'SYMPA_SOAP'});
            Log::do_log('err', "Incorrect LDAP password");
            return undef;
        }
    }
}
salaun's avatar
salaun committed
98

99
## This subroutine if Sympa may use its native authentication for a given user
100
101
## It might not if no user_table paragraph is found in auth.conf or if the
## regexp or
102
103
104
105
106
107
108
109
## negative_regexp exclude this user
## IN : robot, user email
## OUT : boolean
sub may_use_sympa_native_auth {
    my ($robot, $user_email) = @_;

    my $ok = 0;
    ## check each auth.conf paragrpah
110
111
112
113
114
115
116
117
118
119
120
121
    foreach my $auth_service (@{$Conf::Conf{'auth_services'}{$robot}}) {
        next unless ($auth_service->{'auth_type'} eq 'user_table');

        next
            if ($auth_service->{'regexp'}
            && ($user_email !~ /$auth_service->{'regexp'}/i));
        next
            if ($auth_service->{'negative_regexp'}
            && ($user_email =~ /$auth_service->{'negative_regexp'}/i));

        $ok = 1;
        last;
122
    }
123

124
125
    return $ok;
}
salaun's avatar
salaun committed
126
127

sub authentication {
128
129
    my ($robot, $email, $pwd) = @_;
    my ($user, $canonic);
130
    Log::do_log('debug', '(%s)', $email);
salaun's avatar
salaun committed
131

132
    unless ($user = Sympa::User::get_global_user($email)) {
133
134
        $user = {'email' => $email};
    }
salaun's avatar
salaun committed
135
    unless ($user->{'password'}) {
136
        $user->{'password'} = '';
salaun's avatar
salaun committed
137
    }
138
139
140
141
142
143

    if ($user->{'wrong_login_count'} >
        Conf::get_robot_conf($robot, 'max_wrong_password')) {
        # too many wrong login attemp
        Sympa::User::update_global_user($email,
            {wrong_login_count => $user->{'wrong_login_count'} + 1});
144
        Sympa::Report::reject_report_web('user', 'too_many_wrong_login', {})
145
146
            unless ($ENV{'SYMPA_SOAP'});
        Log::do_log('err',
147
            'Login is blocked: too many wrong password submission for %s',
148
149
            $email);
        return undef;
150
    }
151
152
153
154
    foreach my $auth_service (@{$Conf::Conf{'auth_services'}{$robot}}) {
        next if ($auth_service->{'auth_type'} eq 'authentication_info_url');
        next if ($email !~ /$auth_service->{'regexp'}/i);
        next
155
156
            if $auth_service->{'negative_regexp'}
                and $email =~ /$auth_service->{'negative_regexp'}/i;
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189

        ## Only 'user_table' and 'ldap' backends will need that Sympa collects
        ## the user passwords
        ## Other backends are Single Sign-On solutions
        if ($auth_service->{'auth_type'} eq 'user_table') {
            my $fingerprint = password_fingerprint($pwd);

            if ($fingerprint eq $user->{'password'}) {
                Sympa::User::update_global_user($email,
                    {wrong_login_count => 0});
                return {
                    'user'       => $user,
                    'auth'       => 'classic',
                    'alt_emails' => {$email => 'classic'}
                };
            }
        } elsif ($auth_service->{'auth_type'} eq 'ldap') {
            if ($canonic = ldap_authentication(
                    $robot, $auth_service, $email, $pwd, 'email_filter'
                )
                ) {
                unless ($user = Sympa::User::get_global_user($canonic)) {
                    $user = {'email' => $canonic};
                }
                Sympa::User::update_global_user($canonic,
                    {wrong_login_count => 0});
                return {
                    'user'       => $user,
                    'auth'       => 'ldap',
                    'alt_emails' => {$email => 'ldap'}
                };
            }
        }
salaun's avatar
salaun committed
190
    }
salaun's avatar
salaun committed
191

192
    # increment wrong login count.
193
194
    Sympa::User::update_global_user($email,
        {wrong_login_count => $user->{'wrong_login_count'} + 1});
195

196
    Sympa::Report::reject_report_web('user', 'incorrect_passwd', {})
197
        unless ($ENV{'SYMPA_SOAP'});
198
    Log::do_log('err', 'Incorrect password for user %s', $email);
salaun's avatar
salaun committed
199

200
201
    my $param;    #FIXME FIXME: not used.
    $param->{'init_email'}         = $email;
sikeda's avatar
sikeda committed
202
    $param->{'escaped_init_email'} = tools::escape_chars($email);
salaun's avatar
salaun committed
203
204
205
206
    return undef;
}

sub ldap_authentication {
207
208
    my ($robot, $ldap, $auth, $pwd, $whichfilter) = @_;
    my ($mesg, $host, $ldap_passwd, $ldap_anonymous);
209
    Log::do_log('debug2', '(%s, %s, %s)', $auth, '****', $whichfilter);
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
    Log::do_log('debug3', 'Password used: %s', $pwd);

    unless (tools::search_fullpath($robot, 'auth.conf')) {
        return undef;
    }

    ## No LDAP entry is defined in auth.conf
    if ($#{$Conf::Conf{'auth_services'}{$robot}} < 0) {
        Log::do_log('notice', 'Skipping empty auth.conf');
        return undef;
    }

    # only ldap service are to be applied here
    return undef unless ($ldap->{'auth_type'} eq 'ldap');

    # skip ldap auth service if the an email address was provided
    # and this email address does not match the corresponding regexp
    return undef if ($auth =~ /@/ && $auth !~ /$ldap->{'regexp'}/i);

    my @alternative_conf = split(/,/, $ldap->{'alternative_email_attribute'});
    my $attrs            = $ldap->{'email_attribute'};
    my $filter           = $ldap->{'get_dn_by_uid_filter'}
        if ($whichfilter eq 'uid_filter');
    $filter = $ldap->{'get_dn_by_email_filter'}
        if ($whichfilter eq 'email_filter');
    $filter =~ s/\[sender\]/$auth/ig;

    ## bind in order to have the user's DN
238
    my $param = Sympa::Tools::Data::dup_var($ldap);
239
    my $ds    = Sympa::LDAPSource->new($param);
240
241

    unless (defined $ds && ($ldap_anonymous = $ds->connect())) {
242
        Log::do_log('err', 'Unable to connect to the LDAP server "%s"',
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
            $ldap->{'host'});
        return undef;
    }

    $mesg = $ldap_anonymous->search(
        base    => $ldap->{'suffix'},
        filter  => "$filter",
        scope   => $ldap->{'scope'},
        timeout => $ldap->{'timeout'}
    );

    if ($mesg->count() == 0) {
        Log::do_log('notice',
            'No entry in the LDAP Directory Tree of %s for %s',
            $ldap->{'host'}, $auth);
        $ds->disconnect();
        return undef;
    }

    my $refhash = $mesg->as_struct();
    my (@DN) = keys(%$refhash);
    $ds->disconnect();

    ##  bind with the DN and the pwd

    ## Duplicate structure first
    ## Then set the bind_dn and password according to the current user
270
    $param                         = Sympa::Tools::Data::dup_var($ldap);
271
272
273
    $param->{'ldap_bind_dn'}       = $DN[0];
    $param->{'ldap_bind_password'} = $pwd;

274
    $ds = Sympa::LDAPSource->new($param);
salaun's avatar
salaun committed
275

276
    unless (defined $ds && ($ldap_passwd = $ds->connect())) {
277
        Log::do_log('err', 'Unable to connect to the LDAP server "%s"',
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
            $param->{'host'});
        return undef;
    }

    $mesg = $ldap_passwd->search(
        base    => $ldap->{'suffix'},
        filter  => "$filter",
        scope   => $ldap->{'scope'},
        timeout => $ldap->{'timeout'}
    );

    if ($mesg->count() == 0 || $mesg->code() != 0) {
        Log::do_log('notice', "No entry in the LDAP Directory Tree of %s",
            $ldap->{'host'});
        $ds->disconnect();
        return undef;
    }

    ## To get the value of the canonic email and the alternative email
    my (@canonic_email, @alternative);

    ## Keep previous alt emails not from LDAP source
    my $previous = {};
    foreach my $alt (keys %{$param->{'alt_emails'}}) {
        $previous->{$alt} = $param->{'alt_emails'}{$alt}
            if ($param->{'alt_emails'}{$alt} ne 'ldap');
    }
    $param->{'alt_emails'} = {};

    my $entry = $mesg->entry(0);
    @canonic_email = $entry->get_value($attrs, 'alloptions' => 1);
    foreach my $email (@canonic_email) {
        my $e = lc($email);
        $param->{'alt_emails'}{$e} = 'ldap' if ($e);
    }

    foreach my $attribute_value (@alternative_conf) {
        @alternative = $entry->get_value($attribute_value, 'alloptions' => 1);
        foreach my $alter (@alternative) {
            my $a = lc($alter);
            $param->{'alt_emails'}{$a} = 'ldap' if ($a);
        }
    }

    ## Restore previous emails
    foreach my $alt (keys %{$previous}) {
        $param->{'alt_emails'}{$alt} = $previous->{$alt};
    }

327
328
    $ds->disconnect() or Log::do_log('notice', 'Unable to unbind');
    Log::do_log('debug3', 'Canonic: %s', $canonic_email[0]);
329
330
331
332
333
334
335
336
337
338
    ## If the identifier provided was a valid email, return the provided
    ## email.
    ## Otherwise, return the canonical email guessed after the login.
    if (tools::valid_email($auth)
        && !Conf::get_robot_conf($robot, 'ldap_force_canonical_email')) {
        return ($auth);
    } else {
        return lc($canonic_email[0]);
    }
}
salaun's avatar
salaun committed
339
340

# fetch user email using his cas net_id and the paragrapah number in auth.conf
341
# NOTE: This might be moved to Robot package.
342
sub get_email_by_net_id {
343
344
345

    my $robot      = shift;
    my $auth_id    = shift;
346
    my $attributes = shift;
347

348
    Log::do_log('debug', '(%s, %s)', $auth_id, $attributes->{'uid'});
349
350
351
352
353
354
355
356
357

    if (defined $Conf::Conf{'auth_services'}{$robot}[$auth_id]
        {'internal_email_by_netid'}) {
        my $sso_config   = @{$Conf::Conf{'auth_services'}{$robot}}[$auth_id];
        my $netid_cookie = $sso_config->{'netid_http_header'};

        $netid_cookie =~ s/(\w+)/$attributes->{$1}/ig;

        my $email =
358
            Sympa::Robot::get_netidtoemail_db($robot, $netid_cookie,
359
360
361
            $Conf::Conf{'auth_services'}{$robot}[$auth_id]{'service_id'});

        return $email;
362
    }
363

sikeda's avatar
sikeda committed
364
    my $ldap = @{$Conf::Conf{'auth_services'}{$robot}}[$auth_id];
365

366
    my $param = Sympa::Tools::Data::dup_var($ldap);
367
    my $ds    = Sympa::LDAPSource->new($param);
368
    my $ldap_anonymous;
369

370
    unless (defined $ds && ($ldap_anonymous = $ds->connect())) {
371
        Log::do_log('err', 'Unable to connect to the LDAP server "%s"',
372
373
            $ldap->{'ldap_host'});
        return undef;
salaun's avatar
salaun committed
374
375
    }

376
    my $filter = $ldap->{'ldap_get_email_by_uid_filter'};
377
    $filter =~ s/\[([\w-]+)\]/$attributes->{$1}/ig;
salaun's avatar
salaun committed
378

379
    # my @alternative_conf = split(/,/,$ldap->{'alternative_email_attribute'});
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395

    my $emails = $ldap_anonymous->search(
        base    => $ldap->{'ldap_suffix'},
        filter  => $filter,
        scope   => $ldap->{'ldap_scope'},
        timeout => $ldap->{'ldap_timeout'},
        attrs   => [$ldap->{'ldap_email_attribute'}],
    );
    my $count = $emails->count();

    if ($emails->count() == 0) {
        Log::do_log('notice', "No entry in the LDAP Directory Tree of %s",
            $ldap->{'ldap_host'});
        $ds->disconnect();
        return undef;
    }
salaun's avatar
salaun committed
396

397
    $ds->disconnect();
398

399
    ## return only the first attribute
400
401
402
403
    my @results = $emails->entries;
    foreach my $result (@results) {
        return (lc($result->get_value($ldap->{'ldap_email_attribute'})));
    }
salaun's avatar
salaun committed
404

405
}
salaun's avatar
salaun committed
406

407
408
# check trusted_application_name et trusted_application_password : return 1 or
# undef;
409
sub remote_app_check_password {
410
411

    my ($trusted_application_name, $password, $robot) = @_;
412
    Log::do_log('debug', '(%s, %s)', $trusted_application_name, $robot);
413

414
    my $md5 = Digest::MD5::md5_hex($password);
415

416
417
    my $vars;
    # seach entry for trusted_application in Conf
418
419
    my @trusted_apps;

420
    # select trusted_apps from robot context or sympa context
421
422
423
424
425
426
    @trusted_apps = @{Conf::get_robot_conf($robot, 'trusted_applications')};

    foreach my $application (@trusted_apps) {

        if (lc($application->{'name'}) eq lc($trusted_application_name)) {
            if ($md5 eq $application->{'md5password'}) {
427
                # Log::do_log('debug', 'Authentication succeed for %s',$application->{'name'});
428
429
430
431
432
433
434
                my %proxy_for_vars;
                foreach my $varname (@{$application->{'proxy_for_variables'}})
                {
                    $proxy_for_vars{$varname} = 1;
                }
                return (\%proxy_for_vars);
            } else {
435
                Log::do_log('info', 'Bad password from %s',
436
437
438
439
440
                    $trusted_application_name);
                return undef;
            }
        }
    }
441
    # no matching application found
442
    Log::do_log('info', 'Unknown application name %s',
443
        $trusted_application_name);
444
445
    return undef;
}
446

447
448
# create new entry in one_time_ticket table using a rand as id so later
# access is authenticated
449
sub create_one_time_ticket {
450
451
    my $email       = shift;
    my $robot       = shift;
452
    my $data_string = shift;
453
454
    my $remote_addr = shift;
    ## Value may be 'mail' if the IP address is not known
455

456
457
458
    my $ticket = Sympa::Session::get_random();
    #Log::do_log('info', '(%s, %s, %s, %s) Value = %s',
    #    $email, $robot, $data_string, $remote_addr, $ticket);
459
460
461

    my $date = time;
    my $sth;
462
463

    unless (
464
465
466
467
468
469
470
471
472
        SDM::do_prepared_query(
            q{INSERT INTO one_time_ticket_table
          (ticket_one_time_ticket, robot_one_time_ticket,
           email_one_time_ticket, date_one_time_ticket, data_one_time_ticket,
           remote_addr_one_time_ticket, status_one_time_ticket)
          VALUES (?, ?, ?, ?, ?, ?, ?)},
            $ticket, $robot,
            $email,       time, $data_string,
            $remote_addr, 'open'
473
474
475
476
477
478
479
480
481
482
        )
        ) {
        Log::do_log(
            'err',
            'Unable to insert new one time ticket for user %s, robot %s in the database',
            $email,
            $robot
        );
        return undef;
    }
483
484
485
486
487
    return $ticket;
}

# read one_time_ticket from table and remove it
sub get_one_time_ticket {
488
489
    Log::do_log('debug2', '(%s, %s, %s)', @_);
    my $robot         = shift;
490
    my $ticket_number = shift;
491
492
    my $addr          = shift;

493
    my $sth;
494
495

    unless (
496
497
498
499
500
501
502
503
504
505
506
        $sth = SDM::do_prepared_query(
            q{SELECT ticket_one_time_ticket AS ticket,
                 robot_one_time_ticket AS robot,
                 email_one_time_ticket AS email,
                 date_one_time_ticket AS "date",
                 data_one_time_ticket AS data,
                 remote_addr_one_time_ticket AS remote_addr,
                 status_one_time_ticket as status
          FROM one_time_ticket_table
          WHERE ticket_one_time_ticket = ? AND robot_one_time_ticket = ?},
            $ticket_number, $robot
507
508
509
510
511
512
        )
        ) {
        Log::do_log('err',
            'Unable to retrieve one time ticket %s from database',
            $ticket_number);
        return {'result' => 'error'};
513
    }
514

515
    my $ticket = $sth->fetchrow_hashref('NAME_lc');
516
    $sth->finish;
517
518

    unless ($ticket) {
519
        Log::do_log('info', 'Unable to find one time ticket %s', $ticket);
520
        return {'result' => 'not_found'};
521
    }
522

523
    my $result;
524
525
    my $printable_date =
        POSIX::strftime("%d %b %Y at %H:%M:%S", localtime($ticket->{'date'}));
526
527
528
    my $lockout = Conf::get_robot_conf($robot, 'one_time_ticket_lockout')
        || 'open';
    my $lifetime =
529
        Sympa::Tools::Time::duration_conv(
530
        Conf::get_robot_conf($robot, 'one_time_ticket_lifetime') || 0);
531

532
    if ($lockout eq 'one_time' and $ticket->{'status'} ne 'open') {
533
        $result = 'closed';
534
535
        Log::do_log('info', 'Ticket %s from %s has been used before (%s)',
            $ticket_number, $ticket->{'email'}, $printable_date);
536
537
538
539
540
541
542
543
    } elsif ($lockout eq 'remote_addr'
        and $ticket->{'status'} ne $addr
        and $ticket->{'status'} ne 'open') {
        $result = 'closed';
        Log::do_log('info',
            'ticket %s from %s refused because accessed by the other (%s)',
            $ticket_number, $ticket->{'email'}, $printable_date);
    } elsif ($lifetime and $ticket->{'date'} + $lifetime < time) {
544
545
        Log::do_log('info', 'Ticket %s from %s refused because expired (%s)',
            $ticket_number, $ticket->{'email'}, $printable_date);
546
547
548
        $result = 'expired';
    } else {
        $result = 'success';
549
    }
550
551
552
553
554

    if ($result eq 'success') {
        unless (
            $sth = SDM::do_prepared_query(
                q{UPDATE one_time_ticket_table
sikeda's avatar
sikeda committed
555
                  SET status_one_time_ticket = ?
556
557
558
559
560
561
562
563
564
565
566
567
568
569
                  WHERE ticket_one_time_ticket = ? AND
                        robot_one_time_ticket = ?},
                $addr, $ticket_number, $robot
            )
            ) {
            Log::do_log('err',
                'Unable to set one time ticket %s status to %s',
                $ticket_number, $addr);
        } elsif (!$sth->rows) {
            # ticket may be removed by task.
            Log::do_log('info', 'Unable to find one time ticket %s',
                $ticket_number);
            return {'result' => 'not_found'};
        }
570
571
    }

572
    Log::do_log('info', 'Ticket: %s; Result: %s', $ticket_number, $result);
573
574
575
576
577
    return {
        'result'      => $result,
        'date'        => $ticket->{'date'},
        'email'       => $ticket->{'email'},
        'remote_addr' => $ticket->{'remote_addr'},
578
        'robot'       => $robot,
579
580
581
        'data'        => $ticket->{'data'},
        'status'      => $ticket->{'status'}
    };
582
}
583

salaun's avatar
salaun committed
584
1;