#!/usr/bin/perl
# Bootstrap Samba and run a number of tests against it.
# Copyright (C) 2005-2007 Jelmer Vernooij <jelmer@samba.org>
# Published under the GNU GPL, v3 or later.

package Samba4;

use strict;
use Cwd qw(abs_path);
use FindBin qw($RealBin);
use POSIX;

sub new($$$$) {
	my ($classname, $bindir, $ldap, $setupdir) = @_;
	my $self = { 
		vars => {}, 
		ldap => $ldap, 
		bindir => $bindir, 
		setupdir => $setupdir 
	};
	bless $self;
	return $self;
}

sub slapd_start($$)
{
	my $count = 0;
	my ($self, $env_vars) = @_;

	my $uri = $env_vars->{LDAP_URI};

	# running slapd in the background means it stays in the same process group, so it can be
	# killed by timelimit
	if ($self->{ldap} eq "fedora") {
	        system("$ENV{FEDORA_DS_PREFIX}/sbin/ns-slapd -D $env_vars->{FEDORA_DS_DIR} -d0 -i $env_vars->{FEDORA_DS_PIDFILE}> $env_vars->{LDAPDIR}/logs 2>&1 &");
	} elsif ($self->{ldap} eq "openldap") {
		my $oldpath = $ENV{PATH};
		$ENV{PATH} = "/usr/local/sbin:/usr/sbin:/sbin:$ENV{PATH}";
		system("slapd -d0 -f $env_vars->{SLAPD_CONF} -h $uri > $env_vars->{LDAPDIR}/logs 2>&1 &");
		$ENV{PATH} = $oldpath;
	}
	while (system("$self->{bindir}/ldbsearch -H $uri -s base -b \"\" supportedLDAPVersion > /dev/null") != 0) {
	        $count++;
		if ($count > 10) {
		    $self->slapd_stop($env_vars);
		    return 0;
		}
		sleep(1);
	}
	return 1;
}

sub slapd_stop($$)
{
	my ($self, $envvars) = @_;
	if ($self->{ldap} eq "fedora") {
		system("$envvars->{LDAPDIR}/slapd-samba4/stop-slapd");
	} elsif ($self->{ldap} eq "openldap") {
		open(IN, "<$envvars->{OPENLDAP_PIDFILE}") or 
			die("unable to open slapd pid file: $envvars->{OPENLDAP_PIDFILE}");
		kill 9, <IN>;
		close(IN);
	}
}

sub check_or_start($$$) 
{
	my ($self, $env_vars, $max_time) = @_;
	return 0 if ( -p $env_vars->{SMBD_TEST_FIFO});

	unlink($env_vars->{SMBD_TEST_FIFO});
	POSIX::mkfifo($env_vars->{SMBD_TEST_FIFO}, 0700);
	unlink($env_vars->{SMBD_TEST_LOG});
	
	print "STARTING SMBD... ";
	my $pid = fork();
	if ($pid == 0) {
		open STDIN, $env_vars->{SMBD_TEST_FIFO};
		open STDOUT, ">$env_vars->{SMBD_TEST_LOG}";
		open STDERR, '>&STDOUT';
		
		SocketWrapper::set_default_iface(1);
		
		# Start slapd before smbd, but with the fifo on stdin
		if (defined($self->{ldap})) {
		    $self->slapd_start($env_vars) or 
			die("couldn't start slapd");
		    
		    print "LDAP PROVISIONING...";
		    $self->provision_ldap($env_vars);
		}
		
		my $valgrind = "";
		if (defined($ENV{SMBD_VALGRIND})) {
		    $valgrind = $ENV{SMBD_VALGRIND};
		} 

		$ENV{KRB5_CONFIG} = $env_vars->{KRB5_CONFIG}; 

		my $optarg = "";
		if (defined($max_time)) {
			$optarg = "--maximum-runtime=$max_time ";
		}
		my $ret = system("$valgrind $self->{bindir}/smbd $optarg $env_vars->{CONFIGURATION} -M single -i --leak-report-full");
		if ($? == -1) {
			print "Unable to start smbd: $ret: $!\n";
			exit 1;
		}
		unlink($env_vars->{SMBD_TEST_FIFO});
		my $exit = $? >> 8;
		if ( $ret == 0 ) {
			print "smbd exits with status $exit\n";
		} elsif ( $ret & 127 ) {
			print "smbd got signal ".($ret & 127)." and exits with $exit!\n";
		} else {
			$ret = $? >> 8;
			print "smbd failed with status $exit!\n";
		}
		exit $exit;
	}
	print "DONE\n";

	open(DATA, ">$env_vars->{SMBD_TEST_FIFO}");

	return $pid;
}

sub wait_for_start($$)
{
	my ($self, $testenv_vars) = @_;
	# give time for nbt server to register its names
	print "delaying for nbt name registration\n";

	# This will return quickly when things are up, but be slow if we 
	# need to wait for (eg) SSL init 
	system("bin/nmblookup $testenv_vars->{CONFIGURATION} $testenv_vars->{SERVER}");
	system("bin/nmblookup $testenv_vars->{CONFIGURATION} -U $testenv_vars->{SERVER} $testenv_vars->{SERVER}");
	system("bin/nmblookup $testenv_vars->{CONFIGURATION} $testenv_vars->{SERVER}");
	system("bin/nmblookup $testenv_vars->{CONFIGURATION} -U $testenv_vars->{SERVER} $testenv_vars->{NETBIOSNAME}");
	system("bin/nmblookup $testenv_vars->{CONFIGURATION} $testenv_vars->{NETBIOSNAME}");
	system("bin/nmblookup $testenv_vars->{CONFIGURATION} -U $testenv_vars->{SERVER} $testenv_vars->{NETBIOSNAME}");
	system("bin/nmblookup $testenv_vars->{CONFIGURATION} $testenv_vars->{NETBIOSNAME}");
	system("bin/nmblookup $testenv_vars->{CONFIGURATION} -U $testenv_vars->{SERVER} $testenv_vars->{NETBIOSNAME}");
}

sub write_ldb_file($$$)
{
	my ($self, $file, $ldif) = @_;

	open(LDIF, "|$self->{bindir}/ldbadd -H $file >/dev/null");
	print LDIF $ldif;
	return close(LDIF);
}

sub add_wins_config($$)
{
	my ($self, $privatedir) = @_;

	return $self->write_ldb_file("$privatedir/wins_config.ldb", "
dn: name=TORTURE_6,CN=PARTNERS
objectClass: wreplPartner
name: TORTURE_6
address: 127.0.0.6
pullInterval: 0
pushChangeCount: 0
type: 0x3
");
}

sub mk_fedora($$$$$$)
{
	my ($self, $ldapdir, $basedn, $root, $password, $privatedir, $configuration) = @_;

	mkdir($ldapdir);

	my $fedora_ds_inf = "$ldapdir/fedorads.inf";
	my $fedora_ds_initial_ldif = "$ldapdir/fedorads-initial.ldif";

	#Make the subdirectory be as fedora DS would expect
	my $fedora_ds_dir = "$ldapdir/slapd-samba4";

	my $pidfile = "$fedora_ds_dir/logs/slapd-samba4.pid";

	open(CONF, ">$fedora_ds_inf");
	print CONF "
[General]
SuiteSpotUserID = $root
FullMachineName=   localhost
ServerRoot=   $ldapdir

[slapd]
ldapifilepath=$ldapdir/ldapi
Suffix= $basedn
RootDN= cn=Manager,$basedn
RootDNPwd= $password
ServerIdentifier= samba4
InstallLdifFile=$fedora_ds_initial_ldif

inst_dir= $fedora_ds_dir
config_dir= $fedora_ds_dir
schema_dir= $fedora_ds_dir/schema
lock_dir= $fedora_ds_dir/lock
log_dir= $fedora_ds_dir/logs
run_dir= $fedora_ds_dir/logs
db_dir= $fedora_ds_dir/db
bak_dir= $fedora_ds_dir/bak
tmp_dir= $fedora_ds_dir/tmp
ldif_dir= $fedora_ds_dir/ldif
cert_dir= $fedora_ds_dir

start_server= 0
";
	close(CONF);

	open(LDIF, ">$fedora_ds_initial_ldif");
	print LDIF "
# These entries need to be added to get the container for the 
# provision to be aimed at.

dn: cn=\"dc=$basedn\",cn=mapping tree,cn=config
objectclass: top
objectclass: extensibleObject
objectclass: nsMappingTree
nsslapd-state: backend
nsslapd-backend: userData
cn: $basedn

dn: cn=userData,cn=ldbm database,cn=plugins,cn=config
objectclass: extensibleObject
objectclass: nsBackendInstance
nsslapd-suffix: $basedn
";
	close(LDIF);

	system("perl $ENV{FEDORA_DS_PREFIX}/bin/ds_newinst.pl $fedora_ds_inf >&2") == 0 or return 0;

	foreach(<$fedora_ds_dir/schema/*>) {
		unlink unless (/00core.*/);
	}

	open(LDIF, ">>$fedora_ds_dir/dse.ldif");
	print LDIF "dn: cn=bitwise,cn=plugins,cn=config
objectClass: top
objectClass: nsSlapdPlugin
objectClass: extensibleObject
cn: bitwise
nsslapd-pluginPath: $ENV{FEDORA_DS_PREFIX}/lib/fedora-ds/plugins/libbitwise-plugin.so
nsslapd-pluginInitfunc: bitwise_init
nsslapd-pluginType: matchingRule
nsslapd-pluginEnabled: on
nsslapd-pluginId: bitwise
nsslapd-pluginVersion: 1.1.0a3
nsslapd-pluginVendor: Fedora Project
nsslapd-pluginDescription: Allow bitwise matching rules
";
	close(LDIF);

	system("$self->{bindir}/ad2oLschema $configuration -H $privatedir/sam.ldb --option=convert:target=fedora-ds -I $self->{setupdir}/schema-map-fedora-ds-1.0 -O $fedora_ds_dir/schema/99_ad.ldif >&2");

	return ($fedora_ds_dir, $pidfile);
}

sub mk_openldap($$$$$$$$)
{
	my ($self, $ldapdir, $basedn, $password, $privatedir, $dnsname, $configuration, $provision_options) = @_;

	my $slapd_conf = "$ldapdir/slapd.conf";
	my $pidfile = "$ldapdir/slapd.pid";
	my $modconf = "$ldapdir/modules.conf";

	mkdir($_) foreach ($ldapdir, "$ldapdir/db", "$ldapdir/db/bdb-logs", 
		"$ldapdir/db/tmp");

	open(CONF, ">$slapd_conf");
	print CONF "
loglevel 0

include $ldapdir/ad.schema

pidfile		$pidfile
argsfile	$ldapdir/slapd.args
sasl-realm $dnsname
access to * by * write

allow update_anon

authz-regexp
          uid=([^,]*),cn=$dnsname,cn=digest-md5,cn=auth
          ldap:///$basedn??sub?(samAccountName=\$1)

authz-regexp
          uid=([^,]*),cn=([^,]*),cn=digest-md5,cn=auth
          ldap:///$basedn??sub?(samAccountName=\$1)

include $modconf

defaultsearchbase \"$basedn\"

backend		bdb
database        bdb
suffix		\"$basedn\"
rootdn          \"cn=Manager,$basedn\"
rootpw          $password
directory	$ldapdir/db
index           objectClass eq
index           samAccountName eq
index name eq
index objectSid eq
index objectCategory eq
index member eq
index uidNumber eq
index gidNumber eq
index unixName eq
index privilege eq
index nCName eq pres
index lDAPDisplayName eq
index subClassOf eq
index dnsRoot eq
index nETBIOSName eq pres

#syncprov is stable in OpenLDAP 2.3, and available in 2.2.  
#We only need this for the contextCSN attribute anyway....
overlay syncprov
syncprov-checkpoint 100 10
syncprov-sessionlog 100
";

	close(CONF);

	open(CONF, ">$ldapdir/db/DB_CONFIG");
	print CONF "
#
	# Set the database in memory cache size.
	#
	set_cachesize   0       524288        0
	
	
	#
	# Set database flags (this is a test environment, we don't need to fsync()).
	#		
	set_flags       DB_TXN_NOSYNC
	
	#
	# Set log values.
	#
	set_lg_regionmax        104857
	set_lg_max              1048576
	set_lg_bsize            209715
	set_lg_dir              $ldapdir/db/bdb-logs
	
	
	#
	# Set temporary file creation directory.
	#			
	set_tmp_dir             $ldapdir/db/tmp
	";
	close(CONF);

	#This uses the provision we just did, to read out the schema
	system("$self->{bindir}/ad2oLschema $configuration -H $privatedir/sam.ldb -I $self->{setupdir}/schema-map-openldap-2.3 -O $ldapdir/ad.schema >&2");

	#Now create an LDAP baseDN
	system("$self->{bindir}/smbscript $self->{setupdir}/provision $provision_options --ldap-base >&2");

	my $oldpath = $ENV{PATH};
	$ENV{PATH} = "/usr/local/sbin:/usr/sbin:/sbin:$ENV{PATH}";

	unlink($modconf);
	open(CONF, ">$modconf"); close(CONF);

	if (system("slaptest -u -f $slapd_conf >&2") != 0) {
		open(CONF, ">$modconf"); 
		# enable slapd modules
		print CONF "
modulepath	/usr/lib/ldap
moduleload	back_bdb
moduleload	syncprov
";
		close(CONF);
	}

	system("slaptest -u -f $slapd_conf") == 0 or die("slaptest still fails after adding modules");
	system("slapadd -f $slapd_conf < $privatedir/$dnsname.ldif >/dev/null") == 0 or die("slapadd failed");

    system("slaptest -f $slapd_conf >/dev/null") == 0 or 
		die ("slaptest after database load failed");
    
	$ENV{PATH} = $oldpath;

	return ($slapd_conf, $pidfile);
}

sub provision($$$$$)
{
	my ($self, $prefix, $server_role, $domain, $netbiosname) = @_;

	my $smbd_loglevel = 1;
	my $username = "administrator";
	my $realm = "SAMBA.EXAMPLE.COM";
	my $dnsname = "samba.example.com";
	my $basedn = "dc=samba,dc=example,dc=com";
	my $password = "penguin";
	my $root = ($ENV{USER} or $ENV{LOGNAME} or `whoami`);
	my $server = "localhost";
	my $srcdir="$RealBin/../..";
	-d $prefix or mkdir($prefix) or die("Unable to create $prefix");
	my $prefix_abs = abs_path($prefix);
	my $tmpdir = "$prefix_abs/tmp";
	my $etcdir = "$prefix_abs/etc";
	my $piddir = "$prefix_abs/pid";
	my $conffile = "$etcdir/smb.conf";
	my $krb5_config = "$etcdir/krb5.conf";
	my $privatedir = "$prefix_abs/private";
	my $ncalrpcdir = "$prefix_abs/ncalrpc";
	my $lockdir= "$prefix_abs/lockdir";

	my $winbindd_socket_dir = "$prefix_abs/winbind_socket";
	my $configuration = "--configfile=$conffile";
	my $ldapdir = "$prefix_abs/ldap";

	my $tlsdir = "$privatedir/tls";

	(system("rm -rf $prefix/*") == 0) or die("Unable to clean up");
	mkdir($_) foreach ($privatedir, $etcdir, $piddir, $ncalrpcdir, $lockdir, 
		$tmpdir);

	open(CONFFILE, ">$conffile");
	print CONFFILE "
[global]
	netbios name = $netbiosname
	netbios aliases = $server
	workgroup = $domain
	realm = $realm
	private dir = $privatedir
	pid directory = $piddir
	ncalrpc dir = $ncalrpcdir
	lock dir = $lockdir
	setup directory = $self->{setupdir}
	js include = $srcdir/scripting/libjs
	winbindd socket directory = $winbindd_socket_dir
	name resolve order = bcast
	interfaces = 127.0.0.1/8
	tls dh params file = $tlsdir/dhparms.pem
	panic action = $srcdir/script/gdb_backtrace \%PID% \%PROG%
	wins support = yes
	server role = $server_role
	max xmit = 32K
	server max protocol = SMB2
	notify:inotify = false
	ldb:nosync = true
	system:anonymous = true
#We don't want to pass our self-tests if the PAC code is wrong
	gensec:require_pac = true
	log level = $smbd_loglevel

[tmp]
	path = $tmpdir
	read only = no
	ntvfs handler = posix
	posix:sharedelay = 100000
	posix:eadb = $lockdir/eadb.tdb

[cifs]
	read only = no
	ntvfs handler = cifs
	cifs:server = $netbiosname
	cifs:share = tmp
#There is no username specified here, instead the client is expected
#to log in with kerberos, and smbd will used delegated credentials.

[simple]
	path = $tmpdir
	read only = no
	ntvfs handler = simple

[cifsposixtestshare]
	copy = simple
	ntvfs handler = cifsposix   
";
	close(CONFFILE);

	die ("Unable to create key blobs") if
		(system("TLSDIR=$tlsdir $RealBin/mk-keyblobs.sh") != 0);

	open(KRB5CONF, ">$krb5_config");
	print KRB5CONF "
#Generated krb5.conf for $realm

[libdefaults]
 default_realm = $realm
 dns_lookup_realm = false
 dns_lookup_kdc = false
 ticket_lifetime = 24h
 forwardable = yes

[realms]
 $realm = {
  kdc = 127.0.0.1:88
  admin_server = 127.0.0.1:88
  default_domain = $dnsname
 }
 $dnsname = {
  kdc = 127.0.0.1:88
  admin_server = 127.0.0.1:88
  default_domain = $dnsname
 }
 $domain = {
  kdc = 127.0.0.1:88
  admin_server = 127.0.0.1:88
  default_domain = $dnsname
 }

[appdefaults]
	pkinit_anchors = FILE:$tlsdir/ca.pem

[kdc]
	enable-pkinit = true
	pkinit_identity = FILE:$tlsdir/kdc.pem,$tlsdir/key.pem
	pkinit_anchors = FILE:$tlsdir/ca.pem

[domain_realm]
 .$dnsname = $realm
";
	close(KRB5CONF);

#Ensure the config file is valid before we start
	if (system("$self->{bindir}/testparm $configuration -v --suppress-prompt >/dev/null 2>&1") != 0) {
		system("$self->{bindir}/testparm $configuration >&2");
		die("Failed to create configuration!");
	}

	(system("($self->{bindir}/testparm $configuration -v --suppress-prompt --parameter-name=\"netbios name\" --section-name=global 2> /dev/null | grep -i ^$netbiosname ) >/dev/null 2>&1") == 0) or die("Failed to create configuration!");

	my @provision_options = ($configuration);
	push (@provision_options, "--host-name=$netbiosname");
	push (@provision_options, "--host-ip=127.0.0.1");
	push (@provision_options, "--quiet");
	push (@provision_options, "--domain $domain");
	push (@provision_options, "--realm $realm");
	push (@provision_options, "--adminpass $password");
	push (@provision_options, "--root=$root");
	push (@provision_options, "--simple-bind-dn=cn=Manager,$basedn");
	push (@provision_options, "--password=$password");
	push (@provision_options, "--root=$root");

	(system("$self->{bindir}/smbscript $self->{setupdir}/provision " .  join(' ', @provision_options) . ">&2") == 0) or die("Unable to provision");

	my $ldap_uri= "$ldapdir/ldapi";
	$ldap_uri =~ s|/|%2F|g;
	$ldap_uri = "ldapi://$ldap_uri";

	my $ret = {
		KRB5_CONFIG => $krb5_config,
		PIDDIR => $piddir,
		SERVER => $server,
		NETBIOSNAME => $netbiosname,
		LDAP_URI => $ldap_uri,
		DOMAIN => $domain,
		USERNAME => $username,
		REALM => $realm,
		PASSWORD => $password,
		LDAPDIR => $ldapdir,
		WINBINDD_SOCKET_DIR => $winbindd_socket_dir,
		NCALRPCDIR => $ncalrpcdir,
		CONFIGURATION => $configuration
	};

	if (not defined($self->{ldap})) {
	} elsif ($self->{ldap} eq "openldap") {
		($ret->{SLAPD_CONF}, $ret->{OPENLDAP_PIDFILE}) = $self->mk_openldap($ldapdir, $basedn, $password, $privatedir, $dnsname, $configuration, join(' ', @provision_options)) or die("Unable to create openldap directories");
	} elsif ($self->{ldap} eq "fedora") {
		($ret->{FEDORA_DS_DIR}, $ret->{FEDORA_DS_PIDFILE}) = $self->mk_fedora($ldapdir, $basedn, $root, $password, $privatedir, $configuration) or die("Unable to create fedora ds directories");
		push (@provision_options, "--ldap-module=nsuniqueid");
	}

	$ret->{PROVISION_OPTIONS} = join(' ', @provision_options);

	return $ret; 
}

sub provision_member($$$)
{
	my ($self, $prefix, $dcvars) = @_;
	print "PROVISIONING MEMBER...";

	my $ret = $self->provision($prefix, "member server", "SAMBADOMAIN", 
		"localmember");

	$ret or die("Unable to provision");

	system("$self->{bindir}/net join $ret->{CONFIGURATION} $dcvars->{DOMAIN} member -U$dcvars->{USERNAME}\%$dcvars->{PASSWORD}") == 0 or die("Join failed");

	$ret->{SMBD_TEST_FIFO} = "$prefix/smbd_test.fifo";
	$ret->{SMBD_TEST_LOG} = "$prefix/smbd_test.log";
	return $ret;
}

sub provision_dc($$)
{
	my ($self, $prefix) = @_;

	print "PROVISIONING DC...";
	my $ret = $self->provision($prefix, "domain controller", "SAMBADOMAIN", 
		"localtest");

	$self->add_wins_config("$prefix/private") or 
		die("Unable to add wins configuration");

	$ret->{SMBD_TEST_FIFO} = "$prefix/smbd_test.fifo";
	$ret->{SMBD_TEST_LOG} = "$prefix/smbd_test.log";
	return $ret;
}

sub provision_ldap($$)
{
	my ($self, $envvars) = @_;
	my $provision_aci = "";
	
	if ($self->{ldap} eq "fedora") {
		#it is easier to base64 encode this than correctly escape it:
		# (targetattr = "*") (version 3.0;acl "full access to all by all";allow (all)(userdn = "ldap:///anyone");)
		$provision_aci = "--aci=aci:: KHRhcmdldGF0dHIgPSAiKiIpICh2ZXJzaW9uIDMuMDthY2wgImZ1bGwgYWNjZXNzIHRvIGFsbCBieSBhbGwiO2FsbG93IChhbGwpKHVzZXJkbiA9ICJsZGFwOi8vL2FueW9uZSIpOykK";
	}

	system("$self->{bindir}/smbscript $self->{setupdir}/provision $envvars->{PROVISION_OPTIONS} \"$provision_aci\" --ldap-backend=$envvars->{LDAP_URI}") and
		die("LDAP PROVISIONING failed: $self->{bindir}/smbscript $self->{setupdir}/provision $envvars->{PROVISION_OPTIONS} \"$provision_aci\" --ldap-backend=$envvars->{LDAP_URI}");
}

sub teardown_env($$)
{
	my ($self, $envvars) = @_;

	close(DATA);

	sleep(2);

	my $failed = $? >> 8;

	if (-f "$envvars->{PIDDIR}/smbd.pid" ) {
		open(IN, "<$envvars->{PIDDIR}/smbd.pid") or die("unable to open smbd pid file");
		kill 9, <IN>;
		close(IN);
	}

	$self->slapd_stop($envvars) if ($self->{ldap});

	return $failed;
}

sub setup_env($$$)
{
	my ($self, $envname, $path) = @_;
	
	if ($envname eq "dc") {
		return $self->setup_dc("$path/dc");
	} elsif ($envname eq "member") {
		if (not defined($self->{vars}->{dc})) {
			$self->setup_dc("$path/dc");
		}
		return $self->setup_member("$path/member", $self->{vars}->{dc});
	} else {
		die("Samba4 can't provide environment '$envname'");
	}
}

sub setup_member($$$$)
{
	my ($self, $path, $dc_vars) = @_;

	my $env = $self->provision_member($path, $dc_vars);

	$self->check_or_start($env, ($ENV{SMBD_MAX_TIME} or 5400));

	$self->wait_for_start($env);

	return $env;
}

sub setup_dc($$)
{
	my ($self, $path) = @_;

	my $env = $self->provision_dc($path);

	$self->check_or_start($env, 
		($ENV{SMBD_MAX_TIME} or 5400));

	$self->wait_for_start($env);

	$self->{vars}->{dc} = $env;

	return $env;
}

sub stop($)
{
	my ($self) = @_;
}

1;