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authorVolker Lendecke <vl@samba.org>2009-12-21 21:50:43 +0100
committerVolker Lendecke <vl@samba.org>2009-12-21 23:23:52 +0100
commit9b6b01aab6a6a0ebb34798bb78febb2df17b302d (patch)
treeaf8861a982ce0c9f95d65b2d8e5d5a0d280d00e2 /source3
parent2308ec70a53d3990ea98162bcbcc73326ef63687 (diff)
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s3:winbind: Add a lower-cost alternative to wbinfo -t: wbinfo --ping-dc
This just does a NULL RPC call through an existing NETLOGON connection. If someone knows an operation that "just works" and does not return NOT_SUPPORTED, please tell me :-)
Diffstat (limited to 'source3')
-rw-r--r--source3/Makefile.in1
-rw-r--r--source3/librpc/gen_ndr/cli_wbint.c130
-rw-r--r--source3/librpc/gen_ndr/cli_wbint.h8
-rw-r--r--source3/librpc/gen_ndr/ndr_wbint.c51
-rw-r--r--source3/librpc/gen_ndr/ndr_wbint.h11
-rw-r--r--source3/librpc/gen_ndr/srv_wbint.c80
-rw-r--r--source3/librpc/gen_ndr/srv_wbint.h2
-rw-r--r--source3/librpc/gen_ndr/wbint.h8
-rw-r--r--source3/librpc/idl/wbint.idl3
-rw-r--r--source3/winbindd/winbindd.c2
-rw-r--r--source3/winbindd/winbindd_dual_srv.c48
-rw-r--r--source3/winbindd/winbindd_ping_dc.c96
-rw-r--r--source3/winbindd/winbindd_proto.h7
13 files changed, 442 insertions, 5 deletions
diff --git a/source3/Makefile.in b/source3/Makefile.in
index 071cb8cf94..59ffa24e27 100644
--- a/source3/Makefile.in
+++ b/source3/Makefile.in
@@ -1225,6 +1225,7 @@ WINBINDD_OBJ1 = \
winbindd/winbindd_list_groups.o \
winbindd/winbindd_check_machine_acct.o \
winbindd/winbindd_change_machine_acct.o \
+ winbindd/winbindd_ping_dc.o \
winbindd/winbindd_set_mapping.o \
winbindd/winbindd_remove_mapping.o \
winbindd/winbindd_set_hwm.o \
diff --git a/source3/librpc/gen_ndr/cli_wbint.c b/source3/librpc/gen_ndr/cli_wbint.c
index 3115a20d9d..592b27b50d 100644
--- a/source3/librpc/gen_ndr/cli_wbint.c
+++ b/source3/librpc/gen_ndr/cli_wbint.c
@@ -2901,6 +2901,136 @@ NTSTATUS rpccli_wbint_ChangeMachineAccount(struct rpc_pipe_client *cli,
return r.out.result;
}
+struct rpccli_wbint_PingDc_state {
+ struct wbint_PingDc orig;
+ struct wbint_PingDc tmp;
+ TALLOC_CTX *out_mem_ctx;
+ NTSTATUS (*dispatch_recv)(struct tevent_req *req, TALLOC_CTX *mem_ctx);
+};
+
+static void rpccli_wbint_PingDc_done(struct tevent_req *subreq);
+
+struct tevent_req *rpccli_wbint_PingDc_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct rpc_pipe_client *cli)
+{
+ struct tevent_req *req;
+ struct rpccli_wbint_PingDc_state *state;
+ struct tevent_req *subreq;
+
+ req = tevent_req_create(mem_ctx, &state,
+ struct rpccli_wbint_PingDc_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ state->out_mem_ctx = NULL;
+ state->dispatch_recv = cli->dispatch_recv;
+
+ /* In parameters */
+
+ /* Out parameters */
+
+ /* Result */
+ ZERO_STRUCT(state->orig.out.result);
+
+ /* make a temporary copy, that we pass to the dispatch function */
+ state->tmp = state->orig;
+
+ subreq = cli->dispatch_send(state, ev, cli,
+ &ndr_table_wbint,
+ NDR_WBINT_PINGDC,
+ &state->tmp);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, rpccli_wbint_PingDc_done, req);
+ return req;
+}
+
+static void rpccli_wbint_PingDc_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct rpccli_wbint_PingDc_state *state = tevent_req_data(
+ req, struct rpccli_wbint_PingDc_state);
+ NTSTATUS status;
+ TALLOC_CTX *mem_ctx;
+
+ if (state->out_mem_ctx) {
+ mem_ctx = state->out_mem_ctx;
+ } else {
+ mem_ctx = state;
+ }
+
+ status = state->dispatch_recv(subreq, mem_ctx);
+ TALLOC_FREE(subreq);
+ if (!NT_STATUS_IS_OK(status)) {
+ tevent_req_nterror(req, status);
+ return;
+ }
+
+ /* Copy out parameters */
+
+ /* Copy result */
+ state->orig.out.result = state->tmp.out.result;
+
+ /* Reset temporary structure */
+ ZERO_STRUCT(state->tmp);
+
+ tevent_req_done(req);
+}
+
+NTSTATUS rpccli_wbint_PingDc_recv(struct tevent_req *req,
+ TALLOC_CTX *mem_ctx,
+ NTSTATUS *result)
+{
+ struct rpccli_wbint_PingDc_state *state = tevent_req_data(
+ req, struct rpccli_wbint_PingDc_state);
+ NTSTATUS status;
+
+ if (tevent_req_is_nterror(req, &status)) {
+ tevent_req_received(req);
+ return status;
+ }
+
+ /* Steal possbile out parameters to the callers context */
+ talloc_steal(mem_ctx, state->out_mem_ctx);
+
+ /* Return result */
+ *result = state->orig.out.result;
+
+ tevent_req_received(req);
+ return NT_STATUS_OK;
+}
+
+NTSTATUS rpccli_wbint_PingDc(struct rpc_pipe_client *cli,
+ TALLOC_CTX *mem_ctx)
+{
+ struct wbint_PingDc r;
+ NTSTATUS status;
+
+ /* In parameters */
+
+ status = cli->dispatch(cli,
+ mem_ctx,
+ &ndr_table_wbint,
+ NDR_WBINT_PINGDC,
+ &r);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ if (NT_STATUS_IS_ERR(status)) {
+ return status;
+ }
+
+ /* Return variables */
+
+ /* Return result */
+ return r.out.result;
+}
+
struct rpccli_wbint_SetMapping_state {
struct wbint_SetMapping orig;
struct wbint_SetMapping tmp;
diff --git a/source3/librpc/gen_ndr/cli_wbint.h b/source3/librpc/gen_ndr/cli_wbint.h
index b08ef3fef1..4528d43efc 100644
--- a/source3/librpc/gen_ndr/cli_wbint.h
+++ b/source3/librpc/gen_ndr/cli_wbint.h
@@ -248,6 +248,14 @@ NTSTATUS rpccli_wbint_ChangeMachineAccount_recv(struct tevent_req *req,
NTSTATUS *result);
NTSTATUS rpccli_wbint_ChangeMachineAccount(struct rpc_pipe_client *cli,
TALLOC_CTX *mem_ctx);
+struct tevent_req *rpccli_wbint_PingDc_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct rpc_pipe_client *cli);
+NTSTATUS rpccli_wbint_PingDc_recv(struct tevent_req *req,
+ TALLOC_CTX *mem_ctx,
+ NTSTATUS *result);
+NTSTATUS rpccli_wbint_PingDc(struct rpc_pipe_client *cli,
+ TALLOC_CTX *mem_ctx);
struct tevent_req *rpccli_wbint_SetMapping_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct rpc_pipe_client *cli,
diff --git a/source3/librpc/gen_ndr/ndr_wbint.c b/source3/librpc/gen_ndr/ndr_wbint.c
index 97b29761ee..50f781cc20 100644
--- a/source3/librpc/gen_ndr/ndr_wbint.c
+++ b/source3/librpc/gen_ndr/ndr_wbint.c
@@ -2232,6 +2232,47 @@ _PUBLIC_ void ndr_print_wbint_ChangeMachineAccount(struct ndr_print *ndr, const
ndr->depth--;
}
+static enum ndr_err_code ndr_push_wbint_PingDc(struct ndr_push *ndr, int flags, const struct wbint_PingDc *r)
+{
+ if (flags & NDR_IN) {
+ }
+ if (flags & NDR_OUT) {
+ NDR_CHECK(ndr_push_NTSTATUS(ndr, NDR_SCALARS, r->out.result));
+ }
+ return NDR_ERR_SUCCESS;
+}
+
+static enum ndr_err_code ndr_pull_wbint_PingDc(struct ndr_pull *ndr, int flags, struct wbint_PingDc *r)
+{
+ if (flags & NDR_IN) {
+ }
+ if (flags & NDR_OUT) {
+ NDR_CHECK(ndr_pull_NTSTATUS(ndr, NDR_SCALARS, &r->out.result));
+ }
+ return NDR_ERR_SUCCESS;
+}
+
+_PUBLIC_ void ndr_print_wbint_PingDc(struct ndr_print *ndr, const char *name, int flags, const struct wbint_PingDc *r)
+{
+ ndr_print_struct(ndr, name, "wbint_PingDc");
+ ndr->depth++;
+ if (flags & NDR_SET_VALUES) {
+ ndr->flags |= LIBNDR_PRINT_SET_VALUES;
+ }
+ if (flags & NDR_IN) {
+ ndr_print_struct(ndr, "in", "wbint_PingDc");
+ ndr->depth++;
+ ndr->depth--;
+ }
+ if (flags & NDR_OUT) {
+ ndr_print_struct(ndr, "out", "wbint_PingDc");
+ ndr->depth++;
+ ndr_print_NTSTATUS(ndr, "result", r->out.result);
+ ndr->depth--;
+ }
+ ndr->depth--;
+}
+
static enum ndr_err_code ndr_push_wbint_SetMapping(struct ndr_push *ndr, int flags, const struct wbint_SetMapping *r)
{
if (flags & NDR_IN) {
@@ -2567,6 +2608,14 @@ static const struct ndr_interface_call wbint_calls[] = {
false,
},
{
+ "wbint_PingDc",
+ sizeof(struct wbint_PingDc),
+ (ndr_push_flags_fn_t) ndr_push_wbint_PingDc,
+ (ndr_pull_flags_fn_t) ndr_pull_wbint_PingDc,
+ (ndr_print_function_t) ndr_print_wbint_PingDc,
+ false,
+ },
+ {
"wbint_SetMapping",
sizeof(struct wbint_SetMapping),
(ndr_push_flags_fn_t) ndr_push_wbint_SetMapping,
@@ -2619,7 +2668,7 @@ const struct ndr_interface_table ndr_table_wbint = {
NDR_WBINT_VERSION
},
.helpstring = NDR_WBINT_HELPSTRING,
- .num_calls = 23,
+ .num_calls = 24,
.calls = wbint_calls,
.endpoints = &wbint_endpoints,
.authservices = &wbint_authservices
diff --git a/source3/librpc/gen_ndr/ndr_wbint.h b/source3/librpc/gen_ndr/ndr_wbint.h
index e163ff3674..4a381ccfb2 100644
--- a/source3/librpc/gen_ndr/ndr_wbint.h
+++ b/source3/librpc/gen_ndr/ndr_wbint.h
@@ -51,13 +51,15 @@ extern const struct ndr_interface_table ndr_table_wbint;
#define NDR_WBINT_CHANGEMACHINEACCOUNT (0x13)
-#define NDR_WBINT_SETMAPPING (0x14)
+#define NDR_WBINT_PINGDC (0x14)
-#define NDR_WBINT_REMOVEMAPPING (0x15)
+#define NDR_WBINT_SETMAPPING (0x15)
-#define NDR_WBINT_SETHWM (0x16)
+#define NDR_WBINT_REMOVEMAPPING (0x16)
-#define NDR_WBINT_CALL_COUNT (23)
+#define NDR_WBINT_SETHWM (0x17)
+
+#define NDR_WBINT_CALL_COUNT (24)
enum ndr_err_code ndr_push_wbint_userinfo(struct ndr_push *ndr, int ndr_flags, const struct wbint_userinfo *r);
enum ndr_err_code ndr_pull_wbint_userinfo(struct ndr_pull *ndr, int ndr_flags, struct wbint_userinfo *r);
void ndr_print_wbint_userinfo(struct ndr_print *ndr, const char *name, const struct wbint_userinfo *r);
@@ -99,6 +101,7 @@ void ndr_print_wbint_DsGetDcName(struct ndr_print *ndr, const char *name, int fl
void ndr_print_wbint_LookupRids(struct ndr_print *ndr, const char *name, int flags, const struct wbint_LookupRids *r);
void ndr_print_wbint_CheckMachineAccount(struct ndr_print *ndr, const char *name, int flags, const struct wbint_CheckMachineAccount *r);
void ndr_print_wbint_ChangeMachineAccount(struct ndr_print *ndr, const char *name, int flags, const struct wbint_ChangeMachineAccount *r);
+void ndr_print_wbint_PingDc(struct ndr_print *ndr, const char *name, int flags, const struct wbint_PingDc *r);
void ndr_print_wbint_SetMapping(struct ndr_print *ndr, const char *name, int flags, const struct wbint_SetMapping *r);
void ndr_print_wbint_RemoveMapping(struct ndr_print *ndr, const char *name, int flags, const struct wbint_RemoveMapping *r);
void ndr_print_wbint_SetHWM(struct ndr_print *ndr, const char *name, int flags, const struct wbint_SetHWM *r);
diff --git a/source3/librpc/gen_ndr/srv_wbint.c b/source3/librpc/gen_ndr/srv_wbint.c
index 0f39cd93e1..efd9be6b7a 100644
--- a/source3/librpc/gen_ndr/srv_wbint.c
+++ b/source3/librpc/gen_ndr/srv_wbint.c
@@ -1610,6 +1610,79 @@ static bool api_wbint_ChangeMachineAccount(pipes_struct *p)
return true;
}
+static bool api_wbint_PingDc(pipes_struct *p)
+{
+ const struct ndr_interface_call *call;
+ struct ndr_pull *pull;
+ struct ndr_push *push;
+ enum ndr_err_code ndr_err;
+ DATA_BLOB blob;
+ struct wbint_PingDc *r;
+
+ call = &ndr_table_wbint.calls[NDR_WBINT_PINGDC];
+
+ r = talloc(talloc_tos(), struct wbint_PingDc);
+ if (r == NULL) {
+ return false;
+ }
+
+ if (!prs_data_blob(&p->in_data.data, &blob, r)) {
+ talloc_free(r);
+ return false;
+ }
+
+ pull = ndr_pull_init_blob(&blob, r, NULL);
+ if (pull == NULL) {
+ talloc_free(r);
+ return false;
+ }
+
+ pull->flags |= LIBNDR_FLAG_REF_ALLOC;
+ ndr_err = call->ndr_pull(pull, NDR_IN, r);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ talloc_free(r);
+ return false;
+ }
+
+ if (DEBUGLEVEL >= 10) {
+ NDR_PRINT_IN_DEBUG(wbint_PingDc, r);
+ }
+
+ r->out.result = _wbint_PingDc(p, r);
+
+ if (p->rng_fault_state) {
+ talloc_free(r);
+ /* Return true here, srv_pipe_hnd.c will take care */
+ return true;
+ }
+
+ if (DEBUGLEVEL >= 10) {
+ NDR_PRINT_OUT_DEBUG(wbint_PingDc, r);
+ }
+
+ push = ndr_push_init_ctx(r, NULL);
+ if (push == NULL) {
+ talloc_free(r);
+ return false;
+ }
+
+ ndr_err = call->ndr_push(push, NDR_OUT, r);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ talloc_free(r);
+ return false;
+ }
+
+ blob = ndr_push_blob(push);
+ if (!prs_copy_data_in(&p->out_data.rdata, (const char *)blob.data, (uint32_t)blob.length)) {
+ talloc_free(r);
+ return false;
+ }
+
+ talloc_free(r);
+
+ return true;
+}
+
static bool api_wbint_SetMapping(pipes_struct *p)
{
const struct ndr_interface_call *call;
@@ -1853,6 +1926,7 @@ static struct api_struct api_wbint_cmds[] =
{"WBINT_LOOKUPRIDS", NDR_WBINT_LOOKUPRIDS, api_wbint_LookupRids},
{"WBINT_CHECKMACHINEACCOUNT", NDR_WBINT_CHECKMACHINEACCOUNT, api_wbint_CheckMachineAccount},
{"WBINT_CHANGEMACHINEACCOUNT", NDR_WBINT_CHANGEMACHINEACCOUNT, api_wbint_ChangeMachineAccount},
+ {"WBINT_PINGDC", NDR_WBINT_PINGDC, api_wbint_PingDc},
{"WBINT_SETMAPPING", NDR_WBINT_SETMAPPING, api_wbint_SetMapping},
{"WBINT_REMOVEMAPPING", NDR_WBINT_REMOVEMAPPING, api_wbint_RemoveMapping},
{"WBINT_SETHWM", NDR_WBINT_SETHWM, api_wbint_SetHWM},
@@ -2115,6 +2189,12 @@ NTSTATUS rpc_wbint_dispatch(struct rpc_pipe_client *cli, TALLOC_CTX *mem_ctx, co
return NT_STATUS_OK;
}
+ case NDR_WBINT_PINGDC: {
+ struct wbint_PingDc *r = (struct wbint_PingDc *)_r;
+ r->out.result = _wbint_PingDc(cli->pipes_struct, r);
+ return NT_STATUS_OK;
+ }
+
case NDR_WBINT_SETMAPPING: {
struct wbint_SetMapping *r = (struct wbint_SetMapping *)_r;
r->out.result = _wbint_SetMapping(cli->pipes_struct, r);
diff --git a/source3/librpc/gen_ndr/srv_wbint.h b/source3/librpc/gen_ndr/srv_wbint.h
index c8c04fb3cc..716f1ac9d1 100644
--- a/source3/librpc/gen_ndr/srv_wbint.h
+++ b/source3/librpc/gen_ndr/srv_wbint.h
@@ -21,6 +21,7 @@ NTSTATUS _wbint_DsGetDcName(pipes_struct *p, struct wbint_DsGetDcName *r);
NTSTATUS _wbint_LookupRids(pipes_struct *p, struct wbint_LookupRids *r);
NTSTATUS _wbint_CheckMachineAccount(pipes_struct *p, struct wbint_CheckMachineAccount *r);
NTSTATUS _wbint_ChangeMachineAccount(pipes_struct *p, struct wbint_ChangeMachineAccount *r);
+NTSTATUS _wbint_PingDc(pipes_struct *p, struct wbint_PingDc *r);
NTSTATUS _wbint_SetMapping(pipes_struct *p, struct wbint_SetMapping *r);
NTSTATUS _wbint_RemoveMapping(pipes_struct *p, struct wbint_RemoveMapping *r);
NTSTATUS _wbint_SetHWM(pipes_struct *p, struct wbint_SetHWM *r);
@@ -46,6 +47,7 @@ NTSTATUS _wbint_DsGetDcName(pipes_struct *p, struct wbint_DsGetDcName *r);
NTSTATUS _wbint_LookupRids(pipes_struct *p, struct wbint_LookupRids *r);
NTSTATUS _wbint_CheckMachineAccount(pipes_struct *p, struct wbint_CheckMachineAccount *r);
NTSTATUS _wbint_ChangeMachineAccount(pipes_struct *p, struct wbint_ChangeMachineAccount *r);
+NTSTATUS _wbint_PingDc(pipes_struct *p, struct wbint_PingDc *r);
NTSTATUS _wbint_SetMapping(pipes_struct *p, struct wbint_SetMapping *r);
NTSTATUS _wbint_RemoveMapping(pipes_struct *p, struct wbint_RemoveMapping *r);
NTSTATUS _wbint_SetHWM(pipes_struct *p, struct wbint_SetHWM *r);
diff --git a/source3/librpc/gen_ndr/wbint.h b/source3/librpc/gen_ndr/wbint.h
index 962a87ea26..96b7800624 100644
--- a/source3/librpc/gen_ndr/wbint.h
+++ b/source3/librpc/gen_ndr/wbint.h
@@ -303,6 +303,14 @@ struct wbint_ChangeMachineAccount {
};
+struct wbint_PingDc {
+ struct {
+ NTSTATUS result;
+ } out;
+
+};
+
+
struct wbint_SetMapping {
struct {
struct dom_sid *sid;/* [ref] */
diff --git a/source3/librpc/idl/wbint.idl b/source3/librpc/idl/wbint.idl
index e44f179723..432d59e086 100644
--- a/source3/librpc/idl/wbint.idl
+++ b/source3/librpc/idl/wbint.idl
@@ -150,6 +150,9 @@ interface wbint
NTSTATUS wbint_ChangeMachineAccount(
);
+ NTSTATUS wbint_PingDc(
+ );
+
typedef [public] enum {
WBINT_ID_TYPE_NOT_SPECIFIED,
WBINT_ID_TYPE_UID,
diff --git a/source3/winbindd/winbindd.c b/source3/winbindd/winbindd.c
index e09374c5cb..597957d9d6 100644
--- a/source3/winbindd/winbindd.c
+++ b/source3/winbindd/winbindd.c
@@ -532,6 +532,8 @@ static struct winbindd_async_dispatch_table async_nonpriv_table[] = {
winbindd_list_groups_send, winbindd_list_groups_recv },
{ WINBINDD_CHECK_MACHACC, "CHECK_MACHACC",
winbindd_check_machine_acct_send, winbindd_check_machine_acct_recv },
+ { WINBINDD_PING_DC, "PING_DC",
+ winbindd_ping_dc_send, winbindd_ping_dc_recv },
{ 0, NULL, NULL, NULL }
};
diff --git a/source3/winbindd/winbindd_dual_srv.c b/source3/winbindd/winbindd_dual_srv.c
index cecbb61051..b247d5a233 100644
--- a/source3/winbindd/winbindd_dual_srv.c
+++ b/source3/winbindd/winbindd_dual_srv.c
@@ -510,6 +510,54 @@ again:
return status;
}
+NTSTATUS _wbint_PingDc(pipes_struct *p, struct wbint_PingDc *r)
+{
+ NTSTATUS status;
+ struct winbindd_domain *domain;
+ struct rpc_pipe_client *netlogon_pipe;
+ union netr_CONTROL_QUERY_INFORMATION info;
+ WERROR werr;
+ fstring logon_server;
+
+ domain = wb_child_domain();
+ if (domain == NULL) {
+ return NT_STATUS_REQUEST_NOT_ACCEPTED;
+ }
+
+ status = cm_connect_netlogon(domain, &netlogon_pipe);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(3, ("could not open handle to NETLOGON pipe\n"));
+ return status;
+ }
+
+ fstr_sprintf(logon_server, "\\\\%s", domain->dcname);
+
+ /*
+ * This provokes a WERR_NOT_SUPPORTED error message. This is
+ * documented in the wspp docs. I could not get a successful
+ * call to work, but the main point here is testing that the
+ * netlogon pipe works.
+ */
+ status = rpccli_netr_LogonControl(netlogon_pipe, p->mem_ctx,
+ logon_server, NETLOGON_CONTROL_QUERY,
+ 2, &info, &werr);
+
+ if (NT_STATUS_EQUAL(status, NT_STATUS_IO_TIMEOUT)) {
+ DEBUG(2, ("rpccli_netr_LogonControl timed out\n"));
+ invalidate_cm_connection(&domain->conn);
+ return status;
+ }
+
+ if (!NT_STATUS_EQUAL(status, NT_STATUS_CTL_FILE_NOT_SUPPORTED)) {
+ DEBUG(2, ("rpccli_netr_LogonControl returned %s, expected "
+ "NT_STATUS_CTL_FILE_NOT_SUPPORTED\n",
+ nt_errstr(status)));
+ return status;
+ }
+
+ DEBUG(5, ("winbindd_dual_ping_dc succeeded\n"));
+ return NT_STATUS_OK;
+}
NTSTATUS _wbint_SetMapping(pipes_struct *p, struct wbint_SetMapping *r)
{
diff --git a/source3/winbindd/winbindd_ping_dc.c b/source3/winbindd/winbindd_ping_dc.c
new file mode 100644
index 0000000000..e06e5896c2
--- /dev/null
+++ b/source3/winbindd/winbindd_ping_dc.c
@@ -0,0 +1,96 @@
+/*
+ Unix SMB/CIFS implementation.
+ async implementation of WINBINDD_PING_DC
+ Copyright (C) Volker Lendecke 2009
+
+ 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 "winbindd.h"
+#include "librpc/gen_ndr/cli_wbint.h"
+
+struct winbindd_ping_dc_state {
+ uint8_t dummy;
+};
+
+static void winbindd_ping_dc_done(struct tevent_req *subreq);
+
+struct tevent_req *winbindd_ping_dc_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct winbindd_cli_state *cli,
+ struct winbindd_request *request)
+{
+ struct tevent_req *req, *subreq;
+ struct winbindd_ping_dc_state *state;
+ struct winbindd_domain *domain;
+
+ req = tevent_req_create(mem_ctx, &state,
+ struct winbindd_ping_dc_state);
+ if (req == NULL) {
+ return NULL;
+ }
+
+ if (request->domain_name[0] == '\0') {
+ /* preserve old behavior, when no domain name is given */
+ domain = find_our_domain();
+ } else {
+ domain = find_domain_from_name(request->domain_name);
+ }
+ if (domain == NULL) {
+ tevent_req_nterror(req, NT_STATUS_NO_SUCH_DOMAIN);
+ return tevent_req_post(req, ev);
+ }
+ if (domain->internal) {
+ /*
+ * Internal domains are passdb based, we can always
+ * contact them.
+ */
+ tevent_req_done(req);
+ return tevent_req_post(req, ev);
+ }
+
+ subreq = rpccli_wbint_PingDc_send(state, ev, domain->child.rpccli);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, winbindd_ping_dc_done, req);
+ return req;
+}
+
+static void winbindd_ping_dc_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct winbindd_ping_dc_state *state = tevent_req_data(
+ req, struct winbindd_ping_dc_state);
+ NTSTATUS status, result;
+
+ status = rpccli_wbint_PingDc_recv(subreq, state, &result);
+ if (!NT_STATUS_IS_OK(status)) {
+ tevent_req_nterror(req, status);
+ return;
+ }
+ if (!NT_STATUS_IS_OK(result)) {
+ tevent_req_nterror(req, result);
+ return;
+ }
+ tevent_req_done(req);
+}
+
+NTSTATUS winbindd_ping_dc_recv(struct tevent_req *req,
+ struct winbindd_response *presp)
+{
+ return tevent_req_simple_recv_ntstatus(req);
+}
diff --git a/source3/winbindd/winbindd_proto.h b/source3/winbindd/winbindd_proto.h
index 5a03f5d3b8..fab31ba60b 100644
--- a/source3/winbindd/winbindd_proto.h
+++ b/source3/winbindd/winbindd_proto.h
@@ -848,6 +848,13 @@ struct tevent_req *winbindd_check_machine_acct_send(TALLOC_CTX *mem_ctx,
NTSTATUS winbindd_check_machine_acct_recv(struct tevent_req *req,
struct winbindd_response *presp);
+struct tevent_req *winbindd_ping_dc_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct winbindd_cli_state *cli,
+ struct winbindd_request *request);
+NTSTATUS winbindd_ping_dc_recv(struct tevent_req *req,
+ struct winbindd_response *presp);
+
struct tevent_req *winbindd_change_machine_acct_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct winbindd_cli_state *cli,