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|
package authentication; # $Id: authentication.pm 269894 2010-06-05 20:50:23Z tv $
use common;
my $authentication;
sub kinds {
my $no_para = @_ == 0;
my ($do_pkgs, $_meta_class) = @_;
my $allow_SmartCard = $no_para || $do_pkgs->is_available('castella-pam');
(
'LDAP',
'KRB5',
'winbind',
'NIS',
if_($allow_SmartCard, 'SmartCard'),
'local',
);
}
sub kind2name {
my ($kind) = @_;
# Keep the following strings in sync with kind2description ones!!!
${{ local => N("Local file"),
LDAP => N("LDAP"),
NIS => N("NIS"),
SmartCard => N("Smart Card"),
winbind => N("Windows Domain"),
KRB5 => N("Kerberos 5") }}{$kind};
}
my %kind2pam_kind = (
local => [],
SmartCard => ['castella'],
LDAP => ['ldap'],
NIS => [],
KRB5 => ['krb5'],
winbind => ['winbind'],
);
my %kind2nsswitch = (
local => [],
SmartCard => [],
LDAP => ['ldap'],
NIS => ['nis'],
KRB5 => ['ldap'],
winbind => ['winbind'],
);
my $lib = (arch() =~ /x86_64/ ? 'lib64' : 'lib');
my %kind2packages = (
local => [],
SmartCard => [ 'castella-pam' ],
LDAP => [ 'openldap-clients', 'nss-pam-ldapd', 'autofs', 'nss_updatedb' ],
KRB5 => [ 'nss-pam-ldapd', 'pam_krb5', "${lib}sasl2-plug-gssapi", 'nss_updatedb' ],
NIS => [ 'ypbind', 'autofs' ],
winbind => [ 'samba-winbind', 'nss-pam-ldapd', 'pam_krb5', "${lib}sasl2-plug-gssapi" ],
);
sub kind2description_raw {
my (@kinds) = @_;
my %kind2description = (
local => [ N("Local file:"), N("Use local for all authentication and information user tell in local file"), ],
LDAP => [ N("LDAP:"), N("Tells your computer to use LDAP for some or all authentication. LDAP consolidates certain types of information within your organization."), ],
NIS => [ N("NIS:"), N("Allows you to run a group of computers in the same Network Information Service domain with a common password and group file."), ],
winbind => [ N("Windows Domain:"), N("Winbind allows the system to retrieve information and authenticate users in a Windows domain."), ],
KRB5 => [ N("Kerberos 5 :"), N("With Kerberos and LDAP for authentication in Active Directory Server "), ],
);
join('', map { $_ ? qq($_->[0]\n$_->[1]) : '' } map { $kind2description{$_} } @kinds);
}
sub kind2description {
my (@kinds) = @_;
join('', map { $_ ? qq($_\n\n) : '' } map { kind2description_raw($_) } @kinds);
}
sub to_kind {
my ($authentication) = @_;
(find { exists $authentication->{$_} } kinds()) || 'local';
}
sub domain_to_ldap_domain {
my ($domain) = @_;
join(',', map { "dc=$_" } split /\./, $domain);
}
sub ask_parameters {
my ($in, $net, $authentication, $kind) = @_;
#- keep only this authentication kind
foreach (kinds()) {
delete $authentication->{$_} if $_ ne $kind;
}
# do not enable ccreds unless required
undef $authentication->{ccreds};
if ($kind eq 'LDAP') {
$authentication->{LDAPDOMAIN} ||= domain_to_ldap_domain($net->{resolv}{DOMAINNAME});
$authentication->{ccreds} = 1;
# this package must be installed for 'Fetch DN' button to actually work
$in->do_pkgs->ensure_are_installed([ 'openldap-clients' ], 1) or return;
$in->ask_from('', N(" "),
[ { label => N("Welcome to the Authentication Wizard"), title => 1 },
{},
{ label => N("You have selected LDAP authentication. Please review the configuration options below "), },
{},
{ label => N("LDAP Server"), val => \$authentication->{LDAP_server} },
{ label => N("Base dn"), val => \$authentication->{LDAPDOMAIN} },
{ val => N("Fetch base Dn "), type => 'button' , clicked_may_quit => sub { $authentication->{LDAPDOMAIN} = fetch_dn($authentication->{LDAP_server}); 0 } },
{},
{ text => N("Use encrypt connection with TLS "), val => \$authentication->{cafile}, type => 'bool' },
{ val => N("Download CA Certificate "), type => 'button' , disabled => sub { !$authentication->{cafile} }, clicked_may_quit => sub { $authentication->{file} = add_cafile(); 0 } },
{ text => N("Use Disconnect mode "), val => \$authentication->{ccreds}, type => 'bool' },
{ text => N("Use anonymous BIND "), val => \$authentication->{anonymous}, type => 'bool' , advanced => 1 },
{ text => N(" "), advanced => 1 },
{ label => N("Bind DN "), val => \$authentication->{LDAP_binddn}, disabled => sub { !$authentication->{anonymous} }, advanced => 1 },
{ label => N("Bind Password "), val => \$authentication->{LDAP_bindpwd}, disabled => sub { !$authentication->{anonymous} }, advanced => 1 },
{ text => N(" "), advanced => 1 },
{ text => N("Advanced path for group "), val => \$authentication->{nssgrp}, type => 'bool' , advanced => 1 },
{ text => N(" "), advanced => 1 },
{ label => N("Password base"), val => \$authentication->{nss_pwd}, disabled => sub { !$authentication->{nssgrp} }, advanced => 1 },
{ label => N("Group base"), val => \$authentication->{nss_grp}, disabled => sub { !$authentication->{nssgrp} }, advanced => 1 },
{ label => N("Shadow base"), val => \$authentication->{nss_shadow}, disabled => sub { !$authentication->{nssgrp} }, advanced => 1 },
{ text => N(" "), advanced => 1 },
]) or return;
} elsif ($kind eq 'KRB5') {
$authentication->{AD_domain} ||= $net->{resolv}{DOMAINNAME};
$in->do_pkgs->ensure_are_installed([ 'perl-Net-DNS' ], 1) or return;
my @srvs = query_srv_names($authentication->{AD_domain}); #FIXME: update this list if the REALM has changed
$authentication->{AD_server} ||= $srvs[0] if @srvs;
my $AD_user = $authentication->{AD_user} =~ /(.*)\@\Q$authentication->{AD_domain}\E$/ ? $1 : $authentication->{AD_user};
$authentication->{ccreds} = 1;
$in->ask_from('', N(" "),
[ { label => N("Welcome to the Authentication Wizard"), title => 1 },
{},
{ label => N("You have selected Kerberos 5 authentication. Please review the configuration options below "), },
{},
{ label => N("Realm "), val => \$authentication->{AD_domain} },
{},
{ label => N("KDCs Servers"), title => 1, val => \$authentication->{AD_server} , list => \@srvs , not_edit => 0, title => 1 },
{},
{ text => N("Use DNS to locate KDC for the realm"), val => \$authentication->{KRB_host_lookup}, type => 'bool' },
{ text => N("Use DNS to locate realms"), val => \$authentication->{KRB_dns_lookup}, type => 'bool' },
{ text => N("Use Disconnect mode "), val => \$authentication->{ccreds}, type => 'bool' },
]) or return;
my %level = (
1 => N("Use local file for users information"),
2 => N("Use LDAP for users information"),
);
$in->ask_from('', N(" "),
[ { label => N(" "), title => 1 },
{},
{ label => N("You have selected Kerberos 5 for authentication, now you must choose the type of users information "), },
{},
{ label => "" , val => \$authentication->{nsskrb}, type => 'list', list => [ keys %level ], format => sub { $level{$_[0]} } },
{},
{ label => N("LDAP Server"), val => \$authentication->{LDAP_server}, disabled => sub { $authentication->{nsskrb} eq "1" } },
{ label => N("Base dn"), val => \$authentication->{LDAPDOMAIN} , disabled => sub { $authentication->{nsskrb} eq "1" } },
{ val => N("Fecth base Dn "), type => 'button' , clicked_may_quit => sub { $authentication->{LDAPDOMAIN} = fetch_dn($authentication->{LDAP_server}); 0 }, disabled => sub { $authentication->{nsskrb} eq "1" } },
{},
{ text => N("Use encrypt connection with TLS "), val => \$authentication->{cafile}, type => 'bool',, disabled => sub { $authentication->{nsskrb} eq "1" } },
{ val => N("Download CA Certificate "), type => 'button' , disabled => sub { !$authentication->{cafile} }, clicked_may_quit => sub { $authentication->{file} = add_cafile(); 0 } },
{ text => N("Use anonymous BIND "), val => \$authentication->{anonymous}, type => 'bool', disabled => sub { $authentication->{nsskrb} eq "1" } },
{ label => N("Bind DN "), val => \$authentication->{LDAP_binddn}, disabled => sub { !$authentication->{anonymous} } },
{ label => N("Bind Password "), val => \$authentication->{LDAP_bindpwd}, disabled => sub { !$authentication->{anonymous} } },
{},
]) or return;
$authentication->{AD_user} = !$AD_user || $authentication->{sub_kind} eq 'anonymous' ? '' :
$AD_user =~ /@/ ? $AD_user : "$AD_user\@$authentication->{AD_domain}";
$authentication->{AD_password} = '' if !$authentication->{AD_user};
} elsif ($kind eq 'NIS') {
$authentication->{NIS_server} ||= 'broadcast';
$net->{network}{NISDOMAIN} ||= $net->{resolv}{DOMAINNAME};
$in->ask_from('', N(" "),
[ { label => N("Welcome to the Authentication Wizard"), title => 1 },
{},
{ label => N("You have selected NIS authentication. Please review the configuration options below "), },
{},
{ label => N("NIS Domain"), val => \$net->{network}{NISDOMAIN} },
{ label => N("NIS Server"), val => \$authentication->{NIS_server}, list => ["broadcast"], not_edit => 0 },
{},
]) or return;
} elsif ($kind eq 'winbind') {
#- maybe we should browse the network like diskdrake --smb and get the 'doze server names in a list
#- but networking is not setup yet necessarily
#
my @sec_domain = (
"Windows Active Directory Domain",
"Windows NT4 Domain",
);
$authentication->{DNS_domain} ||= $net->{resolv}{DOMAINNAME};
$authentication->{WINDOMAIN} ||= $net->{resolv}{DOMAINNAME};
$in->do_pkgs->ensure_are_installed([ 'samba-client' ], 1) or return;
my @domains=list_domains();
$in->ask_from('', N(" "),
[ { label => N("Welcome to the Authentication Wizard"), title => 1 },
{},
{ label => N("You have selected Windows Domain authentication. Please review the configuration options below "), },
{},
{ label => N("Windows Domain"), val => \$authentication->{WINDOMAIN}, list => \@domains, not_edit => 1 },
{},
{ label => N("Domain Model "), val => \$authentication->{model}, list => \@sec_domain , not_edit => 1 },
{},
{ label => N("Active Directory Realm "), val => \$authentication->{AD_domain} , disabled => sub { $authentication->{model} eq "Windows NT4 Domain" } },
{ label => N("DNS Domain"), val => \$authentication->{DNS_domain} , disabled => sub { $authentication->{model} eq "Windows NT4 Domain" } },
{ label => N("DC Server"), val => \$authentication->{AD_server} , disabled => sub { $authentication->{model} eq "Windows NT4 Domain" } },
{},
]) or return;
}
$authentication->{$kind} ||= 1;
1;
}
sub ask_root_password_and_authentication {
my ($in, $net, $superuser, $authentication, $meta_class, $security) = @_;
my $kind = to_kind($authentication);
my @kinds = kinds($in->do_pkgs, $meta_class);
$in->ask_from_({
title => N("Authentication"),
messages => N("Set administrator (root) password"),
advanced_label => N("Authentication method"),
advanced_messages => kind2description(@kinds),
interactive_help_id => "setRootPassword",
cancel => ($security <= 2 ?
#-PO: keep this short or else the buttons will not fit in the window
N("No password") : ''),
focus_first => 1,
callbacks => {
complete => sub {
check_given_password($in, $superuser, 2 * $security) or return 1,0;
return 0;
} } }, [
{ label => N("Password"), val => \$superuser->{password}, hidden => 1 },
{ label => N("Password (again)"), val => \$superuser->{password2}, hidden => 1 },
{ label => N("Authentication"), val => \$kind, type => 'list', list => \@kinds, format => \&kind2name, advanced => 1 },
]) or delete $superuser->{password};
ask_parameters($in, $net, $authentication, $kind) or goto &ask_root_password_and_authentication;
}
sub check_given_password {
my ($in, $u, $min_length) = @_;
if ($u->{password} ne $u->{password2}) {
$in->ask_warn('', [ N("The passwords do not match"), N("Please try again") ]);
0;
} elsif (length $u->{password} < $min_length) {
$in->ask_warn('', N("This password is too short (it must be at least %d characters long)", $min_length));
0;
} else {
1;
}
}
sub get() {
my $system_auth = cat_("/etc/pam.d/system-auth");
my $authentication = {
blowfish => to_bool($system_auth =~ /\$2a\$/),
md5 => to_bool($system_auth =~ /md5/),
shadow => to_bool($system_auth =~ /shadow/),
};
my @pam_kinds = get_pam_authentication_kinds();
if (my $kind = find { intersection(\@pam_kinds, $kind2pam_kind{$_}) } keys %kind2pam_kind) {
$authentication->{$kind} = '';
} else {
#- we can't use pam to detect NIS
if (my $yp_conf = read_yp_conf()) {
$authentication->{NIS} = 1;
map_each { $authentication->{"NIS_$::a"} = $::b } %$yp_conf;
}
}
$authentication;
}
sub install_needed_packages {
my ($do_pkgs, $kind, $ccreds) = @_;
if (my $pkgs = $kind2packages{$kind}) {
# install ccreds if required
$ccreds and push(@$pkgs, 'pam_ccreds');
#- automatic during install
$do_pkgs->ensure_are_installed($pkgs, $::isInstall) or return;
} else {
log::l("ERROR: $kind not listed in kind2packages");
}
1;
}
sub set {
my ($in, $net, $authentication, $o_when_network_is_up) = @_;
install_needed_packages($in->do_pkgs, to_kind($authentication), $authentication->{ccreds}) or return;
set_raw($net, $authentication, $o_when_network_is_up);
require services;
services::set_status('network-auth', to_kind($authentication) ne 'local', 'dont_apply');
}
sub set_raw {
my ($net, $authentication, $o_when_network_is_up) = @_;
my $conf_file = "$::prefix/etc/sysconfig/drakauth";
my $when_network_is_up = $o_when_network_is_up || sub { my ($f) = @_; $f->() };
enable_shadow() if $authentication->{shadow};
my $kind = to_kind($authentication);
log::l("authentication::set $kind");
my $pam_modules = $kind2pam_kind{$kind} or log::l("kind2pam_kind does not know $kind");
$pam_modules ||= [];
set_pam_authentication($pam_modules, $authentication->{ccreds});
my $nsswitch = $kind2nsswitch{$kind} or log::l("kind2nsswitch does not know $kind");
$nsswitch ||= [];
set_nsswitch_priority($nsswitch, $authentication->{ccreds});
if ($kind eq 'local') {
output($conf_file, <<EOF);
auth=Local File
server=none
realm=none
EOF
} elsif ($kind eq 'SmartCard') {
} elsif ($kind eq 'LDAP') {
configure_nss_ldap($authentication);
output($conf_file, <<EOF);
auth=LDAP Directory
server=$authentication->{LDAP_server}
realm=$authentication->{LDAPDOMAIN}
EOF
if ($authentication->{ccreds}) {
run_program::rooted($::prefix, '/usr/sbin/nss_updatedb.cron'); # updates offline cache.
}
} elsif ($kind eq 'KRB5') {
configure_krb5_for_AD($authentication);
configure_nss_ldap($authentication);
output($conf_file, <<EOF);
auth=Kerberos 5
server=$authentication->{AD_server}
realm=$authentication->{AD_domain}
EOF
} elsif ($kind eq 'NIS') {
my $domain = $net->{network}{NISDOMAIN};
my $NIS_server = $authentication->{NIS_server};
$domain || $NIS_server ne "broadcast" or die N("Cannot use broadcast with no NIS domain");
my $t = $domain ?
($NIS_server eq 'broadcast' ?
"domain $domain broadcast" :
"domain $domain server $NIS_server") :
"server $NIS_server";
substInFile {
if (/^#/) {
$_ = '' if /^#\Q[PREVIOUS]/;
} else {
$_ = "#[PREVIOUS] $_";
}
$_ .= "$t\n" if eof;
} "$::prefix/etc/yp.conf";
#- no need to modify system-auth for nis
$when_network_is_up->(sub {
run_program::rooted($::prefix, 'nisdomainname', $domain);
run_program::rooted($::prefix, 'service', 'ypbind', 'restart');
});
output($conf_file, <<EOF);
auth=$kind
server=$NIS_server
realm=$domain
EOF
} elsif ($kind eq 'winbind') {
my $domain = uc $authentication->{WINDOMAIN};
($authentication->{winuser}, $authentication->{winpass}) = auth();
if ($authentication->{model} eq "Windows NT4 Domain") {
require fs::remote::smb;
fs::remote::smb::write_smb_conf($domain);
run_program::rooted($::prefix, "chkconfig", "--level", "35", "winbind", "on");
mkdir_p("$::prefix/home/$domain");
run_program::rooted($::prefix, 'service', 'smb', 'restart');
run_program::rooted($::prefix, 'service', 'winbind', 'restart');
#- defer running smbpassword until the network is up
$when_network_is_up->(sub {
run_program::raw({ root => $::prefix, sensitive_arguments => 1 },
#'net', 'join', $domain, '-U', $authentication->{winuser} . '%' . $authentication->{winpass});
'echo', '"', 'net', 'join', $domain, '-U', $authentication->{winuser} . '%' . $authentication->{winpass}, '"');
});
output($conf_file, <<EOF);
auth=Windows NT4 Domain
server= none
realm=$domain
EOF
} else {
# FIXME: the DC isn't named ads.domain... try to do reserve lookup?
$authentication->{AD_server} ||= 'ads.' . $authentication->{AD_domain};
my $domain = uc $authentication->{WINDOMAIN};
my $realm = $authentication->{AD_domain};
($authentication->{winuser}, $authentication->{winpass}) = auth();
configure_krb5_for_AD($authentication);
require fs::remote::smb;
fs::remote::smb::write_smb_ads_conf($domain,$realm);
run_program::rooted($::prefix, "chkconfig", "--level", "35", "winbind", "on");
mkdir_p("$::prefix/home/$domain");
run_program::rooted($::prefix, 'net', 'time', 'set', '-S', $authentication->{AD_server});
run_program::rooted($::prefix, 'service', 'smb', 'restart');
$when_network_is_up->(sub {
run_program::raw({ root => $::prefix, sensitive_arguments => 1 },
'net', 'ads', 'join', '-U', $authentication->{winuser} . '%' . $authentication->{winpass});
run_program::rooted($::prefix, 'service', 'winbind', 'restart');
});
#FIXME: perhaps save the defaults values ?
output($conf_file, <<EOF);
auth=Windows Active Directory Domain
server= none
realm=$realm
EOF
} }
1;
}
sub pam_modules() {
'pam_ldap', 'pam_castella', 'pam_winbind', 'pam_krb5', 'pam_mkhomedir', 'pam_ccreds', 'pam_deny' , 'pam_permit';
}
sub pam_module_from_path {
$_[0] && $_[0] =~ m|(/lib/security/)?(pam_.*)\.so| && $2;
}
sub pam_module_to_path {
"$_[0].so";
}
sub pam_format_line {
my ($type, $control, $module, @para) = @_;
sprintf("%-11s %-13s %s\n", $type, $control, join(' ', pam_module_to_path($module), @para));
}
sub get_raw_pam_authentication() {
my %before_deny;
foreach (cat_("$::prefix/etc/pam.d/system-auth")) {
my ($type, $_control, $other) = /(\S+)\s+(\[.*?\]|\S+)\s+(.*)/;
my ($module, @para) = split(' ', $other);
if ($module = pam_module_from_path($module)) {
$before_deny{$type}{$module} = \@para if member($module, pam_modules());
}
}
\%before_deny;
}
sub get_pam_authentication_kinds() {
my $before_deny = get_raw_pam_authentication();
map { s/pam_//; $_ } keys %{$before_deny->{auth}};
}
sub sufficient {
my ($ccreds, $module, $type) = @_;
$ccreds && member($module, 'pam_tcb' , 'pam_winbind') ?
'sufficient' :
$ccreds && member($module, 'pam_ldap', 'pam_krb5') && $type eq 'account' ?
'[authinfo_unavail=ignore default=done]' :
$ccreds && member($module, 'pam_ldap', 'pam_krb5') && $type eq 'password' ?
'sufficient' :
$ccreds && member($module, 'pam_ldap', 'pam_krb5') ?
'[authinfo_unavail=ignore user_unknown=ignore success=1 default=2]' :
'sufficient';
}
sub pam_sufficient_line {
my ($ccreds, $type, $module, @para) = @_;
my $control = sufficient($ccreds, $module, $type);
if ($module eq 'pam_winbind') {
push @para, 'cached_login';
}
pam_format_line($type, $control, $module, @para);
}
sub set_pam_authentication {
my ($authentication_kinds, $o_ccreds) = @_;
my %special = (
auth => [ difference2($authentication_kinds,, [ 'mount' ]) ],
account => [ difference2($authentication_kinds, [ 'castella', 'mount', 'ccreds' ]) ],
password => [ intersection($authentication_kinds, [ 'ldap', 'krb5', 'ccreds' ]) ],
);
my %before_first = (
auth => member('mount', @$authentication_kinds) ? pam_format_line('auth', 'required', 'pam_mount') : '',
session =>
intersection($authentication_kinds, [ 'winbind', 'krb5', 'ldap' ])
? pam_format_line('session', 'optional', 'pam_mkhomedir', 'skel=/etc/skel/', 'umask=0022') :
member('castella', @$authentication_kinds)
? pam_format_line('session', 'optional', 'pam_castella') : '',
);
my %after_deny = (
session =>
member('krb5', @$authentication_kinds)
? pam_format_line('session', 'optional', 'pam_krb5') :
member('mount', @$authentication_kinds)
? pam_format_line('session', 'optional', 'pam_mount') : '',
);
substInFile {
my ($type, $control, $other) = /(\S+)\s+(\[.*?\]|\S+)\s+(.*)/;
my ($module, @para) = split(' ', $other);
if ($module = pam_module_from_path($module)) {
if (member($module, pam_modules())) {
#- first removing previous config
$_ = '';
}
if ($module eq 'pam_tcb' && $special{$type}) {
my @para_for_last =
member($type, 'auth', 'account') ? qw(use_first_pass) : @{[]};
@para = difference2(\@para, \@para_for_last);
my ($before_noask, $ask) = partition { $_ eq 'castella' } @{$special{$type}};
if (!@$ask) {
@para_for_last = grep { $_ ne 'use_first_pass' } @para_for_last;
}
my @l = ((map { [ "pam_$_" ] } @$before_noask),
[ 'pam_tcb', @para ],
(map { [ "pam_$_" ] } @$ask),
);
push @{$l[-1]}, @para_for_last;
$_ = join('', map { pam_sufficient_line($o_ccreds, $type, @$_) } @l);
if ($control eq 'required') {
#- ensure a pam_deny line is there. it will be added below
($module, @para) = ('pam_deny');
}
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