Add libnet_Unjoin(), libnet_UnjoinCtx and friends.

Guenther
(This used to be commit 89e8abb1163984eed358a4da9be4699a8e3a43f9)

2 files changed, 239 insertions, 4 deletions

diff --git a/source3/libnet/libnet_join.c b/source3/libnet/libnet_join.c
index 18421056da..68434bd391 100644
--- a/source3/libnet/libnet_join.c
+++ b/source3/libnet/libnet_join.c
@@ -218,6 +218,119 @@ static NTSTATUS do_DomainJoin(TALLOC_CTX *mem_ctx,
 	return status;
 }
 
+static NTSTATUS do_DomainUnjoin(TALLOC_CTX *mem_ctx,
+				struct libnet_UnjoinCtx *r)
+{
+	struct cli_state *cli = NULL;
+	struct rpc_pipe_client *pipe_hnd = NULL;
+	POLICY_HND sam_pol, domain_pol, user_pol;
+	NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+	char *acct_name;
+	uint32 flags = 0x3e8;
+	const char *const_acct_name;
+	uint32 user_rid;
+	uint32 num_rids, *name_types, *user_rids;
+	SAM_USERINFO_CTR ctr, *qctr = NULL;
+	SAM_USER_INFO_16 p16;
+
+	status = cli_full_connection(&cli, NULL, r->in.server_name,
+				     NULL, 0,
+				     "IPC$", "IPC",
+				     r->in.admin_account,
+				     NULL, //r->in.domain_name,
+				     r->in.password,
+				     0, Undefined, NULL);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		goto done;
+	}
+
+	pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_SAMR, &status);
+	if (!pipe_hnd) {
+		goto done;
+	}
+
+	status = rpccli_samr_connect(pipe_hnd, mem_ctx,
+				     SEC_RIGHTS_MAXIMUM_ALLOWED, &sam_pol);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto done;
+	}
+
+	status = rpccli_samr_open_domain(pipe_hnd, mem_ctx, &sam_pol,
+					 SEC_RIGHTS_MAXIMUM_ALLOWED,
+					 r->in.domain_sid,
+					 &domain_pol);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto done;
+	}
+
+	acct_name = talloc_asprintf(mem_ctx, "%s$", global_myname());
+	strlower_m(acct_name);
+	const_acct_name = acct_name;
+
+	status = rpccli_samr_lookup_names(pipe_hnd, mem_ctx,
+					  &domain_pol, flags, 1,
+					  &const_acct_name,
+					  &num_rids, &user_rids, &name_types);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto done;
+	}
+
+	if (name_types[0] != SID_NAME_USER) {
+		status = NT_STATUS_INVALID_WORKSTATION;
+		goto done;
+	}
+
+	user_rid = user_rids[0];
+
+	status = rpccli_samr_open_user(pipe_hnd, mem_ctx, &domain_pol,
+				       SEC_RIGHTS_MAXIMUM_ALLOWED,
+				       user_rid, &user_pol);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto done;
+	}
+
+	status = rpccli_samr_query_userinfo(pipe_hnd, mem_ctx,
+					    &user_pol, 16, &qctr);
+	if (!NT_STATUS_IS_OK(status)) {
+		rpccli_samr_close(pipe_hnd, mem_ctx, &user_pol);
+		goto done;
+	}
+
+	ZERO_STRUCT(ctr);
+	ctr.switch_value = 16;
+	ctr.info.id16 = &p16;
+
+	p16.acb_info = qctr->info.id16->acb_info | ACB_DISABLED;
+
+	status = rpccli_samr_set_userinfo2(pipe_hnd, mem_ctx, &user_pol, 16,
+					   &cli->user_session_key, &ctr);
+
+	rpccli_samr_close(pipe_hnd, mem_ctx, &user_pol);
+
+	if (!secrets_delete_machine_password_ex(lp_workgroup())) {
+		status = NT_STATUS_INTERNAL_DB_ERROR;
+		goto done;
+	}
+
+	if (!secrets_delete_domain_sid(lp_workgroup())) {
+		status = NT_STATUS_INTERNAL_DB_ERROR;
+		goto done;
+	}
+
+done:
+	rpccli_samr_close(pipe_hnd, mem_ctx, &domain_pol);
+	rpccli_samr_close(pipe_hnd, mem_ctx, &sam_pol);
+
+	cli_rpc_pipe_close(pipe_hnd);
+
+	if (cli) {
+		cli_shutdown(cli);
+	}
+
+	return status;
+}
+
 static WERROR do_modify_val_config(struct registry_key *key,
 				   const char *val_name,
 				   const char *val_data)
@@ -233,9 +346,9 @@ static WERROR do_modify_val_config(struct registry_key *key,
 	return reg_setvalue(key, val_name, &val);
 }
 
-static WERROR do_modify_vals_config(TALLOC_CTX *mem_ctx,
-				    struct libnet_JoinCtx *r,
-				    struct registry_key *key)
+static WERROR do_join_modify_vals_config(TALLOC_CTX *mem_ctx,
+					 struct libnet_JoinCtx *r,
+					 struct registry_key *key)
 {
 	WERROR werr;
 	bool is_ad = false;
@@ -273,6 +386,24 @@ static WERROR do_modify_vals_config(TALLOC_CTX *mem_ctx,
 	return werr;
 }
 
+static WERROR do_unjoin_modify_vals_config(TALLOC_CTX *mem_ctx,
+					   struct libnet_UnjoinCtx *r,
+					   struct registry_key *key)
+{
+	WERROR werr;
+
+	if (r->in.unjoin_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
+
+		werr = do_modify_val_config(key, "security", "user");
+		W_ERROR_NOT_OK_RETURN(werr);
+	}
+
+	reg_deletevalue(key, "realm");
+
+	return werr;
+}
+
+
 static WERROR do_JoinConfig(TALLOC_CTX *mem_ctx,
 			    struct libnet_JoinCtx *r)
 {
@@ -303,7 +434,48 @@ static WERROR do_JoinConfig(TALLOC_CTX *mem_ctx,
 		return werr;
 	}
 
-	werr = do_modify_vals_config(mem_ctx, r, key);
+	werr = do_join_modify_vals_config(mem_ctx, r, key);
+	if (!W_ERROR_IS_OK(werr)) {
+		return werr;
+	}
+
+	r->out.modified_config = true;
+	r->out.result = werr;
+
+	return werr;
+}
+
+static WERROR do_UnjoinConfig(TALLOC_CTX *mem_ctx,
+			      struct libnet_UnjoinCtx *r)
+{
+	WERROR werr;
+	struct registry_key *key = NULL;
+
+	if (!W_ERROR_IS_OK(r->out.result)) {
+		return r->out.result;
+	}
+
+	if (!r->in.modify_config) {
+		return WERR_OK;
+	}
+
+	if (!registry_init_regdb()) {
+		return WERR_REG_IO_FAILURE;
+	}
+
+	if (!libnet_smbconf_key_exists(mem_ctx, GLOBAL_NAME)) {
+		werr = libnet_reg_createkey_internal(mem_ctx,
+						     GLOBAL_NAME, &key);
+	} else {
+		werr = libnet_smbconf_open_path(mem_ctx,
+						GLOBAL_NAME,
+						REG_KEY_WRITE, &key);
+	}
+	if (!W_ERROR_IS_OK(werr)) {
+		return werr;
+	}
+
+	werr = do_unjoin_modify_vals_config(mem_ctx, r, key);
 	if (!W_ERROR_IS_OK(werr)) {
 		return werr;
 	}
@@ -329,6 +501,21 @@ WERROR libnet_init_JoinCtx(TALLOC_CTX *mem_ctx,
 	return WERR_OK;
 }
 
+WERROR libnet_init_UnjoinCtx(TALLOC_CTX *mem_ctx,
+			     struct libnet_UnjoinCtx **r)
+{
+	struct libnet_UnjoinCtx *ctx;
+
+	ctx = talloc_zero(mem_ctx, struct libnet_UnjoinCtx);
+	if (!ctx) {
+		return WERR_NOMEM;
+	}
+
+	*r = ctx;
+
+	return WERR_OK;
+}
+
 WERROR libnet_Join(TALLOC_CTX *mem_ctx,
 		   struct libnet_JoinCtx *r)
 {
@@ -361,3 +548,34 @@ WERROR libnet_Join(TALLOC_CTX *mem_ctx,
 
 	return werr;
 }
+
+WERROR libnet_Unjoin(TALLOC_CTX *mem_ctx,
+		     struct libnet_UnjoinCtx *r)
+{
+	WERROR werr;
+	NTSTATUS status;
+
+	printf("libnet_Unjoin\n");
+
+	if (r->in.modify_config && !lp_include_registry_globals()) {
+		return WERR_NOT_SUPPORTED;
+	}
+
+	if (r->in.unjoin_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
+
+		status = do_DomainUnjoin(mem_ctx, r);
+		if (!NT_STATUS_IS_OK(status)) {
+			if (NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER)) {
+				return WERR_SETUP_NOT_JOINED;
+			}
+			return ntstatus_to_werror(status);
+		}
+	}
+
+	werr = do_UnjoinConfig(mem_ctx, r);
+	if (!W_ERROR_IS_OK(werr)) {
+		return werr;
+	}
+
+	return werr;
+}
diff --git a/source3/libnet/libnet_join.h b/source3/libnet/libnet_join.h
index 9596733cee..46ab27e8b0 100644
--- a/source3/libnet/libnet_join.h
+++ b/source3/libnet/libnet_join.h
@@ -39,8 +39,25 @@ struct libnet_JoinCtx {
 		char *netbios_domain_name;
 		char *dns_domain_name;
 		char *dn;
+		struct dom_sid *domain_sid;
 		bool modified_config;
+		WERROR result;
+	} out;
+};
+
+struct libnet_UnjoinCtx {
+	struct {
+		const char *server_name;
+		const char *domain_name;
+		const char *admin_account;
+		const char *password;
+		uint32_t unjoin_flags;
+		bool modify_config;
 		struct dom_sid *domain_sid;
+	} in;
+
+	struct {
+		bool modified_config;
 		WERROR result;
 	} out;
 };