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/*
Unix SMB/CIFS implementation.
SMB torture tester
Copyright (C) Kai Blin 2012
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "torture/smbtorture.h"
#include <talloc.h>
#include "lib/addns/dns.h"
static struct dns_connection *setup_connection(struct torture_context *tctx)
{
DNS_ERROR err;
struct dns_connection *conn;
err = dns_open_connection(getenv("DC_SERVER_IP"), DNS_TCP, tctx, &conn);
if (!ERR_DNS_IS_OK(err)) {
printf("Failed to open connection to DNS server\n");
return NULL;
}
return conn;
}
static char *get_dns_domain(struct torture_context *tctx)
{
return strlower_talloc(tctx, getenv("REALM"));
}
static struct sockaddr_storage *str_to_sockaddr(TALLOC_CTX *mem_ctx, const char *ip_string)
{
struct sockaddr_storage *ss = talloc_zero(mem_ctx, struct sockaddr_storage);
int ret;
if (ss == NULL) {
return NULL;
}
ss->ss_family = AF_INET;
ret = inet_pton(AF_INET, ip_string, &(((struct sockaddr_in *)ss)->sin_addr));
if (ret != 1) {
return NULL;
}
return ss;
}
static bool test_internal_dns_query_self(struct torture_context *tctx)
{
struct dns_connection *conn;
struct dns_request *req, *resp;
char *host;
DNS_ERROR err;
conn = setup_connection(tctx);
if (conn == NULL) {
return false;
}
host = talloc_asprintf(tctx, "%s.%s", getenv("DC_SERVER"), get_dns_domain(tctx));
if (host == NULL) {
return false;
}
err = dns_create_query(conn, host, QTYPE_A, DNS_CLASS_IN, &req);
if (!ERR_DNS_IS_OK(err)) {
printf("Failed to create A record query\n");
return false;
}
err = dns_transaction(conn, conn, req, &resp);
if (!ERR_DNS_IS_OK(err)) {
printf("Failed to query DNS server\n");
return false;
}
if (dns_response_code(resp->flags) != DNS_NO_ERROR) {
printf("Query returned %u\n", dns_response_code(resp->flags));
return false;
}
/* FIXME: is there _any_ way to unmarshal the response to check this? */
return true;
}
static bool test_internal_dns_update_self(struct torture_context *tctx)
{
struct dns_connection *conn;
struct dns_update_request *req, *resp;
struct dns_rrec *rec = NULL;
char *host;
DNS_ERROR err;
struct sockaddr_storage *ss;
conn = setup_connection(tctx);
if (conn == NULL) {
return false;
}
host = talloc_asprintf(tctx, "%s.%s", getenv("DC_SERVER"), get_dns_domain(tctx));
if (host == NULL) {
return false;
}
err = dns_create_update(conn, get_dns_domain(tctx), &req);
if (!ERR_DNS_IS_OK(err)) {
printf("Failed to update packet\n");
return false;
}
ss = str_to_sockaddr(conn, getenv("DC_SERVER_IP"));
if (ss == NULL) {
printf("Converting '%s' to sockaddr_storage failed\n", getenv("DC_SERVER_IP"));
return false;
}
err = dns_create_a_record(req, host, 300, ss, &rec);
if (!ERR_DNS_IS_OK(err)) {
printf("Failed to create A update record\n");
return false;
}
err = dns_add_rrec(req, rec, &req->num_updates, &req->updates);
if (!ERR_DNS_IS_OK(err)) {
printf("Failed to add A update record to update packet\n");
return false;
}
err = dns_update_transaction(conn, conn, req, &resp);
if (!ERR_DNS_IS_OK(err)) {
printf("Failed to send update\n");
return false;
}
if (dns_response_code(resp->flags) != DNS_REFUSED) {
printf("Update returned %u\n", dns_response_code(resp->flags));
return false;
}
/* FIXME: is there _any_ way to unmarshal the response to check this? */
return true;
}
static struct torture_suite *internal_dns_suite(TALLOC_CTX *ctx)
{
struct torture_suite *suite = torture_suite_create(ctx, "dns_internal");
suite->description = talloc_strdup(suite,
"Tests for the internal DNS server");
torture_suite_add_simple_test(suite, "queryself", test_internal_dns_query_self);
torture_suite_add_simple_test(suite, "updateself", test_internal_dns_update_self);
return suite;
}
/* Silence silly compiler warning */
NTSTATUS torture_internal_dns_init(void);
/**
* DNS torture module initialization
*/
NTSTATUS torture_internal_dns_init(void)
{
struct torture_suite *suite;
TALLOC_CTX *mem_ctx = talloc_autofree_context();
/* register internal DNS torture test cases */
suite = internal_dns_suite(mem_ctx);
if (!suite) return NT_STATUS_NO_MEMORY;
torture_register_suite(suite);
return NT_STATUS_OK;
}
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