s3:winbind: Convert WINBINDD_WINS_BYIP to the async API

1 files changed, 135 insertions, 0 deletions

diff --git a/source3/winbindd/winbindd_wins_byip.c b/source3/winbindd/winbindd_wins_byip.c
new file mode 100644
index 0000000000..4ae1b82ac2
--- /dev/null
+++ b/source3/winbindd/winbindd_wins_byip.c
@@ -0,0 +1,135 @@
+/*
+   Unix SMB/CIFS implementation.
+   async implementation of WINBINDD_WINS_BYIP
+   Copyright (C) Volker Lendecke 2011
+
+   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_wbint_c.h"
+#include "libsmb/nmblib.h"
+
+struct winbindd_wins_byip_state {
+	struct nmb_name star;
+	struct sockaddr_storage addr;
+	fstring response;
+};
+
+static void winbindd_wins_byip_done(struct tevent_req *subreq);
+
+struct tevent_req *winbindd_wins_byip_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_wins_byip_state *state;
+
+	req = tevent_req_create(mem_ctx, &state,
+				struct winbindd_wins_byip_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	/* Ensure null termination */
+	request->data.winsreq[sizeof(request->data.winsreq)-1]='\0';
+
+	fstr_sprintf(state->response, "%s\t", request->data.winsreq);
+
+	DEBUG(3, ("[%5lu]: wins_byip %s\n", (unsigned long)cli->pid,
+		  request->data.winsreq));
+
+	make_nmb_name(&state->star, "*", 0);
+
+	if (!interpret_string_addr(&state->addr, request->data.winsreq,
+				   AI_NUMERICHOST)) {
+		tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+		return tevent_req_post(req, ev);
+	}
+
+	subreq = node_status_query_send(state, ev, &state->star,
+					&state->addr);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, winbindd_wins_byip_done, req);
+	return req;
+}
+
+static void winbindd_wins_byip_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct winbindd_wins_byip_state *state = tevent_req_data(
+		req, struct winbindd_wins_byip_state);
+	struct node_status *names;
+	int i, num_names;
+	NTSTATUS status;
+
+	status = node_status_query_recv(subreq, talloc_tos(), &names,
+					&num_names, NULL);
+	TALLOC_FREE(subreq);
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+
+	for (i=0; i<num_names; i++) {
+		size_t size;
+		/*
+		 * ignore group names
+		 */
+		if (names[i].flags & 0x80) {
+			continue;
+		}
+		/*
+		 * Only report 0x20
+		 */
+		if (names[i].type != 0x20) {
+			continue;
+		}
+
+		DEBUG(10, ("got name %s\n", names[i].name));
+
+		size = strlen(names[i].name + strlen(state->response));
+		if (size > sizeof(state->response) - 1) {
+			DEBUG(10, ("To much data\n"));
+			tevent_req_nterror(req, STATUS_BUFFER_OVERFLOW);
+			return;
+		}
+		fstrcat(state->response, names[i].name);
+		fstrcat(state->response, " ");
+	}
+	state->response[strlen(state->response)-1] = '\n';
+
+	DEBUG(10, ("response: %s", state->response));
+
+	TALLOC_FREE(names);
+	tevent_req_done(req);
+}
+
+NTSTATUS winbindd_wins_byip_recv(struct tevent_req *req,
+				 struct winbindd_response *presp)
+{
+	struct winbindd_wins_byip_state *state = tevent_req_data(
+		req, struct winbindd_wins_byip_state);
+	NTSTATUS status;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		return status;
+	}
+	fstrcpy(presp->data.winsresp, state->response);
+	return NT_STATUS_OK;
+}