1 files changed, 140 insertions, 0 deletions
diff --git a/source3/winbindd/winbindd_ping_dc.c b/source3/winbindd/winbindd_ping_dc.c
new file mode 100644
index 0000000..8f56a9e
--- /dev/null
+++ b/source3/winbindd/winbindd_ping_dc.c
@@ -0,0 +1,140 @@
+/*
+   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/ndr_winbind_c.h"
+
+struct winbindd_ping_dc_state {
+	const char *dcname;
+	NTSTATUS result;
+};
+
+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_trust_from_name_noinit(request->domain_name);
+	}
+	if (domain == NULL) {
+		tevent_req_nterror(req, NT_STATUS_NO_SUCH_DOMAIN);
+		return tevent_req_post(req, ev);
+	}
+	if (domain->internal) {
+		const char *d = lp_dnsdomain();
+		const char *n = lp_netbios_name();
+
+		/*
+		 * Internal domains are passdb based, we can always
+		 * contact them.
+		 */
+
+		if (d != NULL) {
+			char *h;
+			h = strlower_talloc(mem_ctx, n);
+			if (tevent_req_nomem(h, req)) {
+				return tevent_req_post(req, ev);
+			}
+
+			state->dcname = talloc_asprintf(state, "%s.%s", h, d);
+			TALLOC_FREE(h);
+
+			if (tevent_req_nomem(state->dcname, req)) {
+				return tevent_req_post(req, ev);
+			}
+		} else {
+			state->dcname = talloc_strdup(state, n);
+			if (tevent_req_nomem(state->dcname, req)) {
+				return tevent_req_post(req, ev);
+			}
+		}
+
+		tevent_req_done(req);
+		return tevent_req_post(req, ev);
+	}
+
+	subreq = dcerpc_wbint_PingDc_send(state, ev, dom_child_handle(domain),
+					  &state->dcname);
+	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 = dcerpc_wbint_PingDc_recv(subreq, state, &result);
+	state->result = result;
+	if (any_nt_status_not_ok(status, result, &status)) {
+		tevent_req_nterror(req, status);
+		return;
+	}
+	tevent_req_done(req);
+}
+
+NTSTATUS winbindd_ping_dc_recv(struct tevent_req *req,
+			       struct winbindd_response *presp)
+{
+	struct winbindd_ping_dc_state *state = tevent_req_data(
+		req, struct winbindd_ping_dc_state);
+	NTSTATUS status;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		return status;
+	}
+
+	if (!NT_STATUS_IS_OK(state->result)) {
+		set_auth_errors(presp, state->result);
+	}
+
+	if (state->dcname) {
+		presp->extra_data.data = talloc_strdup(presp, state->dcname);
+		if (presp->extra_data.data == NULL) {
+			return NT_STATUS_NO_MEMORY;
+		}
+		presp->length += strlen((char *)presp->extra_data.data) + 1;
+	}
+
+	tevent_req_received(req);
+	return NT_STATUS_OK;
+}