Jonathan Druart
9d6d641d1f
On bug 17591 we discovered that there was something weird going on with the way we export and use subroutines/modules. This patch tries to standardize our EXPORT to use EXPORT_OK only. That way we will need to explicitely define the subroutine we want to use from a module. This patch is a squashed version of: Bug 17600: After export.pl Bug 17600: After perlimport Bug 17600: Manual changes Bug 17600: Other manual changes after second perlimports run Bug 17600: Fix tests And a lot of other manual changes. export.pl is a dirty script that can be found on bug 17600. "perlimport" is: git clone https://github.com/oalders/App-perlimports.git cd App-perlimports/ cpanm --installdeps . export PERL5LIB="$PERL5LIB:/kohadevbox/koha/App-perlimports/lib" find . \( -name "*.pl" -o -name "*.pm" \) -exec perl App-perlimports/script/perlimports --inplace-edit --no-preserve-unused --filename {} \; The ideas of this patch are to: * use EXPORT_OK instead of EXPORT * perltidy the EXPORT_OK list * remove '&' before the subroutine names * remove some uneeded use statements * explicitely import the subroutines we need within the controllers or modules Note that the private subroutines (starting with _) should not be exported (and not used from outside of the module except from tests). EXPORT vs EXPORT_OK (from https://www.thegeekstuff.com/2010/06/perl-exporter-examples/) """ Export allows to export the functions and variables of modules to user’s namespace using the standard import method. This way, we don’t need to create the objects for the modules to access it’s members. @EXPORT and @EXPORT_OK are the two main variables used during export operation. @EXPORT contains list of symbols (subroutines and variables) of the module to be exported into the caller namespace. @EXPORT_OK does export of symbols on demand basis. """ If this patch caused a conflict with a patch you wrote prior to its push: * Make sure you are not reintroducing a "use" statement that has been removed * "$subroutine" is not exported by the C4::$MODULE module means that you need to add the subroutine to the @EXPORT_OK list * Bareword "$subroutine" not allowed while "strict subs" means that you didn't imported the subroutine from the module: - use $MODULE qw( $subroutine list ); You can also use the fully qualified namespace: C4::$MODULE::$subroutine Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
639 lines
28 KiB
Perl
639 lines
28 KiB
Perl
package C4::Auth_with_ldap;
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# Copyright 2000-2002 Katipo Communications
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#
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# This file is part of Koha.
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#
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# Koha is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# Koha is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Koha; if not, see <http://www.gnu.org/licenses>.
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use Modern::Perl;
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use Carp qw( croak );
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use C4::Context;
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use C4::Members::Messaging;
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use C4::Auth qw( checkpw_internal );
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use Koha::Patrons;
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use Koha::AuthUtils qw( hash_password );
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use Net::LDAP;
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use Net::LDAP::Filter;
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our (@ISA, @EXPORT_OK);
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BEGIN {
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require Exporter;
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@ISA = qw(Exporter);
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@EXPORT_OK = qw( checkpw_ldap );
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}
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# Redefine checkpw_ldap:
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# connect to LDAP (named or anonymous)
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# ~ retrieves $userid from KOHA_CONF mapping
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# ~ then compares $password with userPassword
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# ~ then gets the LDAP entry
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# ~ and calls the memberadd if necessary
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sub ldapserver_error {
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return sprintf('No ldapserver "%s" defined in KOHA_CONF: ' . $ENV{KOHA_CONF}, shift);
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}
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use vars qw($mapping @ldaphosts $base $ldapname $ldappassword);
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my $ldap = C4::Context->config("ldapserver") or die 'No "ldapserver" in server hash from KOHA_CONF: ' . $ENV{KOHA_CONF};
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# since Bug 28278 we need to skip id in <ldapserver id="ldapserver"> which generates additional hash level
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if ( exists $ldap->{ldapserver} ) {
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$ldap = $ldap->{ldapserver} or die ldapserver_error('id="ldapserver"');
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}
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my $prefhost = $ldap->{hostname} or die ldapserver_error('hostname');
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my $base = $ldap->{base} or die ldapserver_error('base');
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$ldapname = $ldap->{user} ;
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$ldappassword = $ldap->{pass} ;
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our %mapping = %{$ldap->{mapping}}; # FIXME dpavlin -- don't die because of || (); from 6eaf8511c70eb82d797c941ef528f4310a15e9f9
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my @mapkeys = keys %mapping;
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#warn "Got ", scalar(@mapkeys), " ldap mapkeys ( total ): ", join ' ', @mapkeys, "\n";
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@mapkeys = grep {defined $mapping{$_}->{is}} @mapkeys;
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#warn "Got ", scalar(@mapkeys), " ldap mapkeys (populated): ", join ' ', @mapkeys, "\n";
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my %categorycode_conversions;
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my $default_categorycode;
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if(defined $ldap->{categorycode_mapping}) {
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$default_categorycode = $ldap->{categorycode_mapping}->{default};
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foreach my $cat (@{$ldap->{categorycode_mapping}->{categorycode}}) {
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$categorycode_conversions{$cat->{value}} = $cat->{content};
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}
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}
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my %config = (
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anonymous => defined ($ldap->{anonymous_bind}) ? $ldap->{anonymous_bind} : 1,
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replicate => defined($ldap->{replicate}) ? $ldap->{replicate} : 1, # add from LDAP to Koha database for new user
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update => defined($ldap->{update} ) ? $ldap->{update} : 1, # update from LDAP to Koha database for existing user
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);
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sub description {
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my $result = shift or return;
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return "LDAP error #" . $result->code
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. ": " . $result->error_name . "\n"
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. "# " . $result->error_text . "\n";
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}
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sub search_method {
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my $db = shift or return;
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my $userid = shift or return;
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my $uid_field = $mapping{userid}->{is} or die ldapserver_error("mapping for 'userid'");
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my $filter = Net::LDAP::Filter->new("$uid_field=$userid") or die "Failed to create new Net::LDAP::Filter";
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my $search = $db->search(
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base => $base,
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filter => $filter,
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# attrs => ['*'],
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);
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die "LDAP search failed to return object : " . $search->error if $search->code;
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my $count = $search->count;
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if ($search->code > 0) {
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warn sprintf("LDAP Auth rejected : %s gets %d hits\n", $filter->as_string, $count) . description($search);
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return 0;
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}
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if ($count == 0) {
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warn sprintf("LDAP Auth rejected : search with filter '%s' returns no hit\n", $filter->as_string);
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return 0;
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}
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return $search;
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}
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sub checkpw_ldap {
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my ($dbh, $userid, $password) = @_;
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my @hosts = split(',', $prefhost);
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my $db = Net::LDAP->new(\@hosts);
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unless ( $db ) {
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warn "LDAP connexion failed";
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return 0;
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}
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my $userldapentry;
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# first, LDAP authentication
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if ( $ldap->{auth_by_bind} ) {
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my $principal_name;
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if ( $config{anonymous} ) {
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# Perform an anonymous bind
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my $res = $db->bind;
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if ( $res->code ) {
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warn "Anonymous LDAP bind failed: " . description($res);
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return 0;
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}
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# Perform a LDAP search for the given username
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my $search = search_method( $db, $userid )
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or return 0; # warnings are in the sub
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$userldapentry = $search->shift_entry;
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$principal_name = $userldapentry->dn;
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}
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else {
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$principal_name = $ldap->{principal_name};
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if ( $principal_name and $principal_name =~ /\%/ ) {
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$principal_name = sprintf( $principal_name, $userid );
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}
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else {
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$principal_name = $userid;
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}
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}
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# Perform a LDAP bind for the given username using the matched DN
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my $res = $db->bind( $principal_name, password => $password );
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if ( $res->code ) {
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if ( $config{anonymous} ) {
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# With anonymous_bind approach we can be sure we have found the correct user
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# and that any 'code' response indicates a 'bad' user (be that blocked, banned
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# or password changed). We should not fall back to local accounts in this case.
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warn "LDAP bind failed as kohauser $userid: " . description($res);
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return -1;
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} else {
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# Without a anonymous_bind, we cannot be sure we are looking at a valid ldap user
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# at all, and thus we should fall back to local logins to restore previous behaviour
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# see bug 12831
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warn "LDAP bind failed as kohauser $userid: " . description($res);
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return 0;
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}
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}
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if ( !defined($userldapentry)
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&& ( $config{update} or $config{replicate} ) )
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{
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my $search = search_method( $db, $userid ) or return 0;
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$userldapentry = $search->shift_entry;
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}
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} else {
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my $res = ($config{anonymous}) ? $db->bind : $db->bind($ldapname, password=>$ldappassword);
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if ($res->code) { # connection refused
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warn "LDAP bind failed as ldapuser " . ($ldapname || '[ANONYMOUS]') . ": " . description($res);
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return 0;
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}
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my $search = search_method($db, $userid) or return 0; # warnings are in the sub
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# Handle multiple branches. Same login exists several times in different branches.
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my $bind_ok = 0;
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while (my $entry = $search->shift_entry) {
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my $user_ldap_bind_ret = $db->bind($entry->dn, password => $password);
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unless ($user_ldap_bind_ret->code) {
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$userldapentry = $entry;
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$bind_ok = 1;
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last;
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}
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}
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unless ($bind_ok) {
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warn "LDAP Auth rejected : invalid password for user '$userid'.";
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return -1;
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}
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}
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# To get here, LDAP has accepted our user's login attempt.
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# But we still have work to do. See perldoc below for detailed breakdown.
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my (%borrower);
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my ($borrowernumber,$cardnumber,$local_userid,$savedpw) = exists_local($userid);
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if (( $borrowernumber and $config{update} ) or
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(!$borrowernumber and $config{replicate}) ) {
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%borrower = ldap_entry_2_hash($userldapentry,$userid);
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#warn "checkpw_ldap received \%borrower w/ " . keys(%borrower), " keys: ", join(' ', keys %borrower), "\n";
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}
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if ($borrowernumber) {
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if ($config{update}) { # A1, B1
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my $c2 = &update_local($local_userid,$password,$borrowernumber,\%borrower) || '';
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($cardnumber eq $c2) or warn "update_local returned cardnumber '$c2' instead of '$cardnumber'";
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} else { # C1, D1
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# maybe update just the password?
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return(1, $cardnumber, $local_userid);
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}
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} elsif ($config{replicate}) { # A2, C2
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my @columns = Koha::Patrons->columns;
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my $patron = Koha::Patron->new(
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{
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map { exists( $borrower{$_} ) ? ( $_ => $borrower{$_} ) : () } @columns
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}
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)->store;
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die "Insert of new patron failed" unless $patron;
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$borrowernumber = $patron->borrowernumber;
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C4::Members::Messaging::SetMessagingPreferencesFromDefaults( { borrowernumber => $borrowernumber, categorycode => $borrower{'categorycode'} } );
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} else {
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return 0; # B2, D2
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}
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if (C4::Context->preference('ExtendedPatronAttributes') && $borrowernumber && ($config{update} ||$config{replicate})) {
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my $library_id = C4::Context->userenv ? C4::Context->userenv->{'branch'} : undef;
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my $attribute_types = Koha::Patron::Attribute::Types->search_with_library_limits({}, {}, $library_id);
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while ( my $attribute_type = $attribute_types->next ) {
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my $code = $attribute_type->code;
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unless (exists($borrower{$code}) && $borrower{$code} !~ m/^\s*$/ ) {
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next;
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}
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my $patron = Koha::Patrons->find($borrowernumber);
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if ( $patron ) { # Should not be needed, but we are in C4::Auth LDAP...
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eval {
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my $attribute = Koha::Patron::Attribute->new({code => $code, attribute => $borrower{$code}});
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$patron->extended_attributes([$attribute->unblessed]);
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};
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if ($@) { # FIXME Test if Koha::Exceptions::Patron::Attribute::NonRepeatable
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warn "ERROR_extended_unique_id_failed $code $borrower{$code}";
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}
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}
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}
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}
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return(1, $cardnumber, $userid);
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}
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# Pass LDAP entry object and local cardnumber (userid).
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# Returns borrower hash.
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# Edit KOHA_CONF so $memberhash{'xxx'} fits your ldap structure.
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# Ensure that mandatory fields are correctly filled!
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#
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sub ldap_entry_2_hash {
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my $userldapentry = shift;
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my %borrower = ( cardnumber => shift );
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my %memberhash;
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$userldapentry->exists('uid'); # This is bad, but required! By side-effect, this initializes the attrs hash.
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#foreach (keys %$userldapentry) {
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# print STDERR "\n\nLDAP key: $_\t", sprintf('(%s)', ref $userldapentry->{$_}), "\n";
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#}
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my $x = $userldapentry->{attrs} or return;
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foreach (keys %$x) {
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$memberhash{$_} = join ' ', @{$x->{$_}};
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#warn sprintf("building \$memberhash{%s} = ", $_, join(' ', @{$x->{$_}})), "\n";
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}
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#warn "Finished \%memberhash has ", scalar(keys %memberhash), " keys\n", "Referencing \%mapping with ", scalar(keys %mapping), " keys\n";
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foreach my $key (keys %mapping) {
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my $data = $memberhash{ lc($mapping{$key}->{is}) }; # Net::LDAP returns all names in lowercase
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#warn "mapping %20s ==> %-20s (%s)\n", $key, $mapping{$key}->{is}, $data;
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unless (defined $data) {
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$data = $mapping{$key}->{content} || undef;
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}
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$borrower{$key} = $data;
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}
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$borrower{initials} = $memberhash{initials} ||
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( substr($borrower{'firstname'},0,1)
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. substr($borrower{ 'surname' },0,1)
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. " ");
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# categorycode conversions
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if(defined $categorycode_conversions{$borrower{categorycode}}) {
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$borrower{categorycode} = $categorycode_conversions{$borrower{categorycode}};
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}
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elsif($default_categorycode) {
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$borrower{categorycode} = $default_categorycode;
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}
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# check if categorycode exists, if not, fallback to default from koha-conf.xml
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my $dbh = C4::Context->dbh;
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my $sth = $dbh->prepare("SELECT categorycode FROM categories WHERE categorycode = ?");
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$sth->execute( uc($borrower{'categorycode'}) );
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unless ( my $row = $sth->fetchrow_hashref ) {
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my $default = $mapping{'categorycode'}->{content};
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#warn "Can't find ", $borrower{'categorycode'}, " default to: $default for ", $borrower{userid};
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$borrower{'categorycode'} = $default
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}
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return %borrower;
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}
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sub exists_local {
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my $arg = shift;
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my $dbh = C4::Context->dbh;
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my $select = "SELECT borrowernumber,cardnumber,userid,password FROM borrowers ";
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my $sth = $dbh->prepare("$select WHERE userid=?"); # was cardnumber=?
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$sth->execute($arg);
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#warn "Userid '$arg' exists_local? %s\n", $sth->rows;
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($sth->rows == 1) and return $sth->fetchrow;
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$sth = $dbh->prepare("$select WHERE cardnumber=?");
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$sth->execute($arg);
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#warn "Cardnumber '$arg' exists_local? %s\n", $sth->rows;
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($sth->rows == 1) and return $sth->fetchrow;
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return 0;
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}
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# This function performs a password update, given the userid, borrowerid,
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# and digested password. It will verify that things are correct and return the
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# borrowers cardnumber. The idea is that it is used to keep the local
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# passwords in sync with the LDAP passwords.
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#
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# $cardnum = _do_changepassword($userid, $borrowerid, $digest)
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#
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# Note: if the LDAP config has the update_password tag set to a false value,
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# then this will not update the password, it will simply return the cardnumber.
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sub _do_changepassword {
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my ($userid, $borrowerid, $password) = @_;
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if ( exists( $ldap->{update_password} ) && !$ldap->{update_password} ) {
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# We don't store the password in the database
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my $sth = C4::Context->dbh->prepare(
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'SELECT cardnumber FROM borrowers WHERE borrowernumber=?');
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$sth->execute($borrowerid);
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die "Unable to access borrowernumber "
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. "with userid=$userid, "
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. "borrowernumber=$borrowerid"
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if !$sth->rows;
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my ($cardnum) = $sth->fetchrow;
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$sth = C4::Context->dbh->prepare(
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'UPDATE borrowers SET password = null WHERE borrowernumber=?');
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$sth->execute($borrowerid);
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return $cardnum;
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}
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my $digest = hash_password($password);
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#warn "changing local password for borrowernumber=$borrowerid to '$digest'\n";
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Koha::Patrons->find($borrowerid)->set_password({ password => $password, skip_validation => 1 });
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my ($ok, $cardnum) = checkpw_internal(C4::Context->dbh, $userid, $password);
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return $cardnum if $ok;
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warn "Password mismatch after update to borrowernumber=$borrowerid";
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return;
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}
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sub update_local {
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my $userid = shift or croak "No userid";
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my $password = shift or croak "No password";
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my $borrowerid = shift or croak "No borrowerid";
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my $borrower = shift or croak "No borrower record";
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# skip extended patron attributes in 'borrowers' attribute update
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my @keys = keys %$borrower;
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if (C4::Context->preference('ExtendedPatronAttributes')) {
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my $library_id = C4::Context->userenv ? C4::Context->userenv->{'branch'} : undef;
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my $attribute_types = Koha::Patron::Attribute::Types->search_with_library_limits({}, {}, $library_id);
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while ( my $attribute_type = $attribute_types->next ) {
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my $code = $attribute_type->code;
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@keys = grep { $_ ne $code } @keys;
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#warn "ignoring extended patron attribute '%s' in update_local()\n", $code;
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}
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}
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my $dbh = C4::Context->dbh;
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my $query = "UPDATE borrowers\nSET " .
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join(',', map {"$_=?"} @keys) .
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"\nWHERE borrowernumber=? ";
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my $sth = $dbh->prepare($query);
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#warn $query, "\n", join "\n", map {"$_ = '" . $borrower->{$_} . "'"} @keys;
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#warn "\nuserid = $userid\n";
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$sth->execute(
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((map {$borrower->{$_}} @keys), $borrowerid)
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);
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# MODIFY PASSWORD/LOGIN if password was mapped
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_do_changepassword($userid, $borrowerid, $password) if exists( $borrower->{'password'} );
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}
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1;
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__END__
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=head1 NAME
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C4::Auth - Authenticates Koha users
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=head1 SYNOPSIS
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use C4::Auth_with_ldap;
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=head1 LDAP Configuration
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This module is specific to LDAP authentification. It requires Net::LDAP package and one or more
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working LDAP servers.
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To use it :
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* Modify ldapserver element in KOHA_CONF
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* Establish field mapping in <mapping> element.
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For example, if your user records are stored according to the inetOrgPerson schema, RFC#2798,
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the username would match the "uid" field, and the password should match the "userpassword" field.
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Make sure that ALL required fields are populated by your LDAP database (and mapped in KOHA_CONF).
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What are the required fields? Well, in mysql you can check the database table "borrowers" like this:
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mysql> show COLUMNS from borrowers;
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+---------------------+--------------+------+-----+---------+----------------+
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| Field | Type | Null | Key | Default | Extra |
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+---------------------+--------------+------+-----+---------+----------------+
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| borrowernumber | int(11) | NO | PRI | NULL | auto_increment |
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| cardnumber | varchar(16) | YES | UNI | NULL | |
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| surname | mediumtext | NO | | NULL | |
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| firstname | text | YES | | NULL | |
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| title | mediumtext | YES | | NULL | |
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| othernames | mediumtext | YES | | NULL | |
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| initials | text | YES | | NULL | |
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| streetnumber | varchar(10) | YES | | NULL | |
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| streettype | varchar(50) | YES | | NULL | |
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| address | mediumtext | NO | | NULL | |
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| address2 | text | YES | | NULL | |
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| city | mediumtext | NO | | NULL | |
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| state | mediumtext | YES | | NULL | |
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| zipcode | varchar(25) | YES | | NULL | |
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| country | text | YES | | NULL | |
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| email | mediumtext | YES | | NULL | |
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| phone | text | YES | | NULL | |
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| mobile | varchar(50) | YES | | NULL | |
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| fax | mediumtext | YES | | NULL | |
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| emailpro | text | YES | | NULL | |
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| phonepro | text | YES | | NULL | |
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| B_streetnumber | varchar(10) | YES | | NULL | |
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| B_streettype | varchar(50) | YES | | NULL | |
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| B_address | varchar(100) | YES | | NULL | |
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| B_address2 | text | YES | | NULL | |
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| B_city | mediumtext | YES | | NULL | |
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| B_state | mediumtext | YES | | NULL | |
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| B_zipcode | varchar(25) | YES | | NULL | |
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| B_country | text | YES | | NULL | |
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| B_email | text | YES | | NULL | |
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| B_phone | mediumtext | YES | | NULL | |
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| dateofbirth | date | YES | | NULL | |
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| branchcode | varchar(10) | NO | MUL | | |
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| categorycode | varchar(10) | NO | MUL | | |
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| dateenrolled | date | YES | | NULL | |
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| dateexpiry | date | YES | | NULL | |
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| gonenoaddress | tinyint(1) | YES | | NULL | |
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| lost | tinyint(1) | YES | | NULL | |
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| debarred | date | YES | | NULL | |
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| debarredcomment | varchar(255) | YES | | NULL | |
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| contactname | mediumtext | YES | | NULL | |
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| contactfirstname | text | YES | | NULL | |
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| contacttitle | text | YES | | NULL | |
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| borrowernotes | mediumtext | YES | | NULL | |
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| relationship | varchar(100) | YES | | NULL | |
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| ethnicity | varchar(50) | YES | | NULL | |
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| ethnotes | varchar(255) | YES | | NULL | |
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| sex | varchar(1) | YES | | NULL | |
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| password | varchar(30) | YES | | NULL | |
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| flags | int(11) | YES | | NULL | |
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| userid | varchar(30) | YES | MUL | NULL | |
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| opacnote | mediumtext | YES | | NULL | |
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| contactnote | varchar(255) | YES | | NULL | |
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| sort1 | varchar(80) | YES | | NULL | |
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| sort2 | varchar(80) | YES | | NULL | |
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| altcontactfirstname | varchar(255) | YES | | NULL | |
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| altcontactsurname | varchar(255) | YES | | NULL | |
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| altcontactaddress1 | varchar(255) | YES | | NULL | |
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| altcontactaddress2 | varchar(255) | YES | | NULL | |
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| altcontactaddress3 | varchar(255) | YES | | NULL | |
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| altcontactstate | mediumtext | YES | | NULL | |
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| altcontactzipcode | varchar(50) | YES | | NULL | |
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| altcontactcountry | text | YES | | NULL | |
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| altcontactphone | varchar(50) | YES | | NULL | |
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| smsalertnumber | varchar(50) | YES | | NULL | |
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| privacy | int(11) | NO | | 1 | |
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+---------------------+--------------+------+-----+---------+----------------+
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66 rows in set (0.00 sec)
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Where Null="NO", the field is required.
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=head1 KOHA_CONF and field mapping
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Example XML stanza for LDAP configuration in KOHA_CONF.
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<config>
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...
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<useldapserver>1</useldapserver>
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<!-- LDAP SERVER (optional) -->
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<ldapserver id="ldapserver">
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<hostname>localhost</hostname>
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<base>dc=metavore,dc=com</base>
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<user>cn=Manager,dc=metavore,dc=com</user> <!-- DN, if not anonymous -->
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<pass>metavore</pass> <!-- password, if not anonymous -->
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<replicate>1</replicate> <!-- add new users from LDAP to Koha database -->
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<update>1</update> <!-- update existing users in Koha database -->
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<auth_by_bind>0</auth_by_bind> <!-- set to 1 to authenticate by binding instead of
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password comparison, e.g., to use Active Directory -->
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<anonymous_bind>0</anonymous_bind> <!-- set to 1 if users should be searched using
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an anonymous bind, even when auth_by_bind is on -->
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<principal_name>%s@my_domain.com</principal_name>
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<!-- optional, for auth_by_bind: a printf format to make userPrincipalName from koha userid.
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Not used with anonymous_bind. -->
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<update_password>1</update_password> <!-- set to 0 if you don't want LDAP passwords
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synced to the local database -->
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<mapping> <!-- match koha SQL field names to your LDAP record field names -->
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<firstname is="givenname" ></firstname>
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<surname is="sn" ></surname>
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<address is="postaladdress" ></address>
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<city is="l" >Athens, OH</city>
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<zipcode is="postalcode" ></zipcode>
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<branchcode is="branch" >MAIN</branchcode>
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<userid is="uid" ></userid>
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<password is="userpassword" ></password>
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<email is="mail" ></email>
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<categorycode is="employeetype" >PT</categorycode>
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<phone is="telephonenumber"></phone>
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</mapping>
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</ldapserver>
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</config>
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The <mapping> subelements establish the relationship between mysql fields and LDAP attributes. The element name
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is the column in mysql, with the "is" characteristic set to the LDAP attribute name. Optionally, any content
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between the element tags is taken as the default value. In this example, the default categorycode is "PT" (for
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patron).
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=head1 CONFIGURATION
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Once a user has been accepted by the LDAP server, there are several possibilities for how Koha will behave, depending on
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your configuration and the presence of a matching Koha user in your local DB:
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LOCAL_USER
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OPTION UPDATE REPLICATE EXISTS? RESULT
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A1 1 1 1 OK : We're updating them anyway.
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A2 1 1 0 OK : We're adding them anyway.
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B1 1 0 1 OK : We update them.
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B2 1 0 0 FAIL: We cannot add new user.
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C1 0 1 1 OK : We do nothing. (maybe should update password?)
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C2 0 1 0 OK : We add the new user.
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D1 0 0 1 OK : We do nothing. (maybe should update password?)
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D2 0 0 0 FAIL: We cannot add new user.
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Note: failure here just means that Koha will fallback to checking the local DB. That is, a given user could login with
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their LDAP password OR their local one. If this is a problem, then you should enable update and supply a mapping for
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password. Then the local value will be updated at successful LDAP login and the passwords will be synced.
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If you choose NOT to update local users, the borrowers table will not be affected at all.
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Note that this means that patron passwords may appear to change if LDAP is ever disabled, because
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the local table never contained the LDAP values.
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=head2 auth_by_bind
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Binds as the user instead of retrieving their record. Recommended if update disabled.
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=head2 principal_name
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Provides an optional sprintf-style format for manipulating the userid before the bind.
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Even though the userPrincipalName is one intended target, any uniquely identifying
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attribute that the server allows to be used for binding could be used.
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Currently, principal_name only operates when auth_by_bind is enabled.
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=head2 update_password
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If this tag is left out or set to a true value, then the user's LDAP password
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will be stored (hashed) in the local Koha database. If you don't want this
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to happen, then set the value of this to '0'. Note that if passwords are not
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stored locally, and the connection to the LDAP system fails, then the users
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will not be able to log in at all.
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=head2 Active Directory
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The auth_by_bind and principal_name settings are recommended for Active Directory.
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Under default Active Directory rules, we cannot determine the distinguishedName attribute from the Koha userid as reliably as
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we would typically under openldap. Instead of:
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distinguishedName: CN=barnes.7,DC=my_company,DC=com
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We might get:
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distinguishedName: CN=Barnes\, Jim,OU=Test Accounts,OU=User Accounts,DC=my_company,DC=com
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Matching that would require us to know more info about the account (firstname, surname) and to include punctuation and whitespace
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in Koha userids. But the userPrincipalName should be consistent, something like:
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userPrincipalName: barnes.7@my_company.com
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Therefore it is often easier to bind to Active Directory with userPrincipalName, effectively the
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canonical email address for that user, or what it would be if email were enabled for them. If Koha userid values
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will match the username portion of the userPrincipalName, and the domain suffix is the same for all users, then use principal_name
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like this:
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<principal_name>%s@core.my_company.com</principal_name>
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The user of the previous example, barnes.7, would then attempt to bind as:
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barnes.7@core.my_company.com
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=head1 SEE ALSO
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CGI(3)
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Net::LDAP()
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XML::Simple()
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Digest::MD5(3)
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sprintf()
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=cut
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# For reference, here's an important difference in the data structure we rely on.
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# ========================================
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# Using attrs instead of {asn}->attributes
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# ========================================
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#
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# LDAP key: ->{ cn} = ARRAY w/ 3 members.
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# LDAP key: ->{ cn}->{ sss} = sss
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# LDAP key: ->{ cn}->{ Steve Smith} = Steve Smith
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# LDAP key: ->{ cn}->{Steve S. Smith} = Steve S. Smith
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#
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# LDAP key: ->{ givenname} = ARRAY w/ 1 members.
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# LDAP key: ->{ givenname}->{Steve} = Steve
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#
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