libnetapi: add NetQueryDisplayInformation example.

Guenther
(This used to be commit 5f9332cf1f)

source3/lib/netapi/examples/user/user_dispinfo.c

@@ -0,0 +1,98 @@
+/*
+ *  Unix SMB/CIFS implementation.
+ *  NetQueryDisplayInformation query
+ *  Copyright (C) Guenther Deschner 2008
+ *
+ *  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 <sys/types.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <netapi.h>
+
+#include "common.h"
+
+int main(int argc, const char **argv)
+{
+	NET_API_STATUS status;
+	struct libnetapi_ctx *ctx = NULL;
+	const char *hostname = NULL;
+	void *buffer = NULL;
+	uint32_t entries_read = 0;
+	uint32_t idx = 0;
+	int i;
+
+	struct NET_DISPLAY_USER *user;
+
+	poptContext pc;
+	int opt;
+
+	struct poptOption long_options[] = {
+		POPT_AUTOHELP
+		POPT_COMMON_LIBNETAPI_EXAMPLES
+		POPT_TABLEEND
+	};
+
+	status = libnetapi_init(&ctx);
+	if (status != 0) {
+		return status;
+	}
+
+	pc = poptGetContext("user_dispinfo", argc, argv, long_options, 0);
+
+	poptSetOtherOptionHelp(pc, "hostname");
+	while((opt = poptGetNextOpt(pc)) != -1) {
+	}
+
+	if (!poptPeekArg(pc)) {
+		poptPrintHelp(pc, stderr, 0);
+		goto out;
+	}
+	hostname = poptGetArg(pc);
+
+	/* NetQueryDisplayInformation */
+
+	do {
+		status = NetQueryDisplayInformation(hostname,
+						    1,
+						    idx,
+						    1000,
+						    (uint32_t)-1,
+						    &entries_read,
+						    &buffer);
+		if (status == 0 || status == ERROR_MORE_DATA) {
+			user = (struct NET_DISPLAY_USER *)buffer;
+			for (i=0; i<entries_read; i++) {
+				printf("user %d: %s\n", i, user->usri1_name);
+				user++;
+			}
+			NetApiBufferFree(buffer);
+		}
+	} while (status == ERROR_MORE_DATA);
+
+	if (status != 0) {
+		printf("NetQueryDisplayInformation failed with: %s\n",
+			libnetapi_get_error_string(ctx, status));
+	}
+
+ out:
+	libnetapi_free(ctx);
+	poptFreeContext(pc);
+
+	return status;
+}