selftest: make/use a copy of GNUPGHOME

That makes it possible to run tests from a read only source tree.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14628

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 86343125a55d184c15aa94cd01f4c8893a5a0917)
(cherry picked from commit c1a4cb97d1d71b974eed2ecb5f34bb1425f36294)

3 files changed, 36 insertions, 1 deletions

diff --git a/selftest/selftest.pl b/selftest/selftest.pl
index cda4c0e2f4b..258a8437922 100755
--- a/selftest/selftest.pl
+++ b/selftest/selftest.pl
@@ -312,7 +312,6 @@ $ENV{PREFIX} = $prefix;
 $ENV{PREFIX_ABS} = $prefix_abs;
 $ENV{SRCDIR} = $srcdir;
 $ENV{SRCDIR_ABS} = $srcdir_abs;
-$ENV{GNUPGHOME} = "$srcdir_abs/selftest/gnupg";
 $ENV{BINDIR} = $bindir_abs;
 
 my $tls_enabled = not $opt_quick;
@@ -693,6 +692,9 @@ $ENV{RESOLV_CONF} = "${selftest_resolv_conf_path}.global";
 my $selftest_krbt_ccache_path = "$tmpdir_abs/selftest.krb5_ccache";
 $ENV{KRB5CCNAME} = "FILE:${selftest_krbt_ccache_path}.global";
 
+my $selftest_gnupghome_path = "$tmpdir_abs/selftest.no.gnupg";
+$ENV{GNUPGHOME} = "${selftest_gnupghome_path}.global";
+
 my @available = ();
 foreach my $fn (@testlists) {
 	foreach (read_testlist($fn)) {
@@ -829,6 +831,7 @@ sub setup_env($$)
 
 	$ENV{RESOLV_CONF} = "${selftest_resolv_conf_path}.${envname}/ignore";
 	$ENV{KRB5CCNAME} = "FILE:${selftest_krbt_ccache_path}.${envname}/ignore";
+	$ENV{GNUPGHOME} = "${selftest_gnupghome_path}.${envname}/ignore";
 
 	if (defined(get_running_env($envname))) {
 		$testenv_vars = get_running_env($envname);
diff --git a/selftest/target/Samba.pm b/selftest/target/Samba.pm
index 6118f2e243a..d47f933376e 100644
--- a/selftest/target/Samba.pm
+++ b/selftest/target/Samba.pm
@@ -280,6 +280,30 @@ EOF
 	umask $oldumask;
 }
 
+sub copy_gnupg_home($)
+{
+	my ($ctx) = @_;
+
+	my $gnupg_srcdir = "$ENV{SRCDIR_ABS}/selftest/gnupg";
+	my @files = (
+		"gpg.conf",
+		"pubring.gpg",
+		"secring.gpg",
+		"trustdb.gpg",
+	);
+
+	my $oldumask = umask;
+	umask 0077;
+	mkdir($ctx->{gnupghome}, 0777);
+	umask 0177;
+	foreach my $file (@files) {
+		my $srcfile = "${gnupg_srcdir}/${file}";
+		my $dstfile = "$ctx->{gnupghome}/${file}";
+		copy_file_content(${srcfile}, ${dstfile});
+	}
+	umask $oldumask;
+}
+
 sub mk_krb5_conf($$)
 {
 	my ($ctx) = @_;
@@ -672,6 +696,7 @@ sub get_env_for_process
 		RESOLV_CONF => $env_vars->{RESOLV_CONF},
 		KRB5_CONFIG => $env_vars->{KRB5_CONFIG},
 		KRB5CCNAME => "$env_vars->{KRB5_CCACHE}.$proc_name",
+		GNUPGHOME => $env_vars->{GNUPGHOME},
 		SELFTEST_WINBINDD_SOCKET_DIR => $env_vars->{SELFTEST_WINBINDD_SOCKET_DIR},
 		NMBD_SOCKET_DIR => $env_vars->{NMBD_SOCKET_DIR},
 		NSS_WRAPPER_PASSWD => $env_vars->{NSS_WRAPPER_PASSWD},
@@ -857,6 +882,7 @@ my @exported_envvars = (
 	# misc stuff
 	"KRB5_CONFIG",
 	"KRB5CCNAME",
+	"GNUPGHOME",
 	"SELFTEST_WINBINDD_SOCKET_DIR",
 	"NMBD_SOCKET_DIR",
 	"LOCAL_PATH",
diff --git a/selftest/target/Samba4.pm b/selftest/target/Samba4.pm
index dec83dbb02b..77bd741d476 100755
--- a/selftest/target/Samba4.pm
+++ b/selftest/target/Samba4.pm
@@ -396,6 +396,7 @@ sub get_cmd_env_vars
 		"OPENSSL_FORCE_FIPS_MODE",
 		"KRB5_CONFIG",
 		"KRB5_CCACHE",
+		"GNUPGHOME",
 	);
 
 	my $localenv = undef;
@@ -420,6 +421,7 @@ sub get_cmd_env_vars
 	$cmd_env .= "KRB5_CONFIG=\"$localenv->{KRB5_CONFIG}\" ";
 	$cmd_env .= "KRB5CCNAME=\"$localenv->{KRB5_CCACHE}\" ";
 	$cmd_env .= "RESOLV_CONF=\"$localenv->{RESOLV_CONF}\" ";
+	$cmd_env .= "GNUPGHOME=\"$localenv->{GNUPGHOME}\" ";
 
 	return $cmd_env;
 }
@@ -589,6 +591,7 @@ sub provision_raw_prepare($$$$$$$$$$$$$$)
 	$ctx->{krb5_conf} = "$ctx->{etcdir}/krb5.conf";
 	$ctx->{krb5_ccache} = "$prefix_abs/krb5_ccache";
 	$ctx->{mitkdc_conf} = "$ctx->{etcdir}/mitkdc.conf";
+	$ctx->{gnupghome} = "$prefix_abs/gnupg";
 	$ctx->{privatedir} = "$prefix_abs/private";
 	$ctx->{binddnsdir} = "$prefix_abs/bind-dns";
 	$ctx->{ncalrpcdir} = "$prefix_abs/ncalrpc";
@@ -632,6 +635,7 @@ sub provision_raw_prepare($$$$$$$$$$$$$$)
 	$ctx->{smb_conf_extra_options} = "";
 
 	my @provision_options = ();
+	push (@provision_options, "GNUPGHOME=\"$ctx->{gnupghome}\"");
 	push (@provision_options, "KRB5_CONFIG=\"$ctx->{krb5_conf}\"");
 	push (@provision_options, "KRB5CCNAME=\"$ctx->{krb5_ccache}\"");
 	push (@provision_options, "NSS_WRAPPER_PASSWD=\"$ctx->{nsswrap_passwd}\"");
@@ -724,6 +728,7 @@ sub provision_raw_step1($$)
 		return undef;
 	}
 
+	Samba::copy_gnupg_home($ctx);
 	Samba::prepare_keyblobs($ctx);
 	my $crlfile = "$ctx->{tlsdir}/crl.pem";
 	$crlfile = "" unless -e ${crlfile};
@@ -867,6 +872,7 @@ nogroup:x:65534:nobody
 	# Note that we have SERVER_X and DC_SERVER_X variables (which have the same
 	# value initially). In a 2 DC setup, $DC_SERVER_X will always be the PDC.
 	my $ret = {
+		GNUPGHOME => $ctx->{gnupghome},
 		KRB5_CONFIG => $ctx->{krb5_conf},
 		KRB5_CCACHE => $ctx->{krb5_ccache},
 		MITKDC_CONFIG => $ctx->{mitkdc_conf},