[PATCH] Add NetWkstaGetInfo.

Hans Leidekker hans at meelstraat.net
Tue Oct 15 06:59:07 MDT 2013


Hi,

I'm trying to get an application working under Wine which needs support
for accessing remote machines (found in netapi32.dll). To this end I wrote
a wrapper around Samba's libnetapi and bumped into a missing API.

This patch adds it and allows the app to progress a little, though only
if I supply credentials. Some of the info levels are accessible anonymously
on Windows but Samba insists on supplying credentials for all levels. Is
there a way to suppress that?

-------------- next part --------------
>From ceccc9840b8337bd50f6f40b65c9dd2212a34913 Mon Sep 17 00:00:00 2001
From: Hans Leidekker <hans at meelstraat.net>
Date: Mon, 14 Oct 2013 20:43:27 +0200
Subject: [PATCH] Add NetWkstaGetInfo.
To: samba-technical at samba.org

Signed-off-by: Hans Leidekker <hans at meelstraat.net>
---
 source3/lib/netapi/libnetapi.c         |  47 ++++++++++
 source3/lib/netapi/libnetapi.h         |   7 ++
 source3/lib/netapi/netapi.h            |  17 ++++
 source3/lib/netapi/tests/netapitest.c  |   5 ++
 source3/lib/netapi/tests/netwksta.c    |  62 +++++++++++++
 source3/lib/netapi/tests/wscript_build |   2 +-
 source3/lib/netapi/wkstainfo.c         | 153 +++++++++++++++++++++++++++++++++
 source3/librpc/idl/libnetapi.idl       |  37 ++++++++
 source3/wscript_build                  |   1 +
 9 files changed, 330 insertions(+), 1 deletion(-)
 create mode 100644 source3/lib/netapi/tests/netwksta.c
 create mode 100644 source3/lib/netapi/wkstainfo.c

diff --git a/source3/lib/netapi/libnetapi.c b/source3/lib/netapi/libnetapi.c
index 45bb1d5..6e89cb5 100644
--- a/source3/lib/netapi/libnetapi.c
+++ b/source3/lib/netapi/libnetapi.c
@@ -374,6 +374,53 @@ NET_API_STATUS NetServerSetInfo(const char * server_name /* [in] [unique] */,
 }
 
 /****************************************************************
+ NetWkstaGetInfo
+****************************************************************/
+
+NET_API_STATUS NetWkstaGetInfo(const char * wksta_name /* [in] [unique] */,
+				uint32_t level /* [in] */,
+				uint8_t **buffer /* [out] [ref] */)
+{
+	struct NetWkstaGetInfo r;
+	struct libnetapi_ctx *ctx = NULL;
+	NET_API_STATUS status;
+	WERROR werr;
+	TALLOC_CTX *frame = talloc_stackframe();
+
+	status = libnetapi_getctx(&ctx);
+	if (status != 0) {
+		TALLOC_FREE(frame);
+		return status;
+	}
+
+	/* In parameters */
+	r.in.server_name = wksta_name;
+	r.in.level = level;
+
+	/* Out parameters */
+	r.out.buffer = buffer;
+
+	if (DEBUGLEVEL >= 10) {
+		NDR_PRINT_IN_DEBUG(NetWkstaGetInfo, &r);
+	}
+
+	if (LIBNETAPI_LOCAL_SERVER(wksta_name)) {
+		werr = NetWkstaGetInfo_l(ctx, &r);
+	} else {
+		werr = NetWkstaGetInfo_r(ctx, &r);
+	}
+
+	r.out.result = W_ERROR_V(werr);
+
+	if (DEBUGLEVEL >= 10) {
+		NDR_PRINT_OUT_DEBUG(NetWkstaGetInfo, &r);
+	}
+
+	TALLOC_FREE(frame);
+	return (NET_API_STATUS)r.out.result;
+}
+
+/****************************************************************
  NetGetDCName
 ****************************************************************/
 
diff --git a/source3/lib/netapi/libnetapi.h b/source3/lib/netapi/libnetapi.h
index e832dea..d23dcb8 100644
--- a/source3/lib/netapi/libnetapi.h
+++ b/source3/lib/netapi/libnetapi.h
@@ -78,6 +78,13 @@ WERROR NetServerSetInfo_r(struct libnetapi_ctx *ctx,
 			  struct NetServerSetInfo *r);
 WERROR NetServerSetInfo_l(struct libnetapi_ctx *ctx,
 			  struct NetServerSetInfo *r);
+NET_API_STATUS NetWkstaGetInfo(const char * wksta_name /* [in] [unique] */,
+				uint32_t level /* [in] */,
+				uint8_t **buffer /* [out] [ref] */);
+WERROR NetWkstaGetInfo_r(struct libnetapi_ctx *ctx,
+			 struct NetWkstaGetInfo *r);
+WERROR NetWkstaGetInfo_l(struct libnetapi_ctx *ctx,
+			 struct NetWkstaGetInfo *r);
 NET_API_STATUS NetGetDCName(const char * server_name /* [in] [unique] */,
 			    const char * domain_name /* [in] [unique] */,
 			    uint8_t **buffer /* [out] [ref] */);
diff --git a/source3/lib/netapi/netapi.h b/source3/lib/netapi/netapi.h
index 620d8cf..457368e 100644
--- a/source3/lib/netapi/netapi.h
+++ b/source3/lib/netapi/netapi.h
@@ -1617,6 +1617,23 @@ NET_API_STATUS NetServerSetInfo(const char * server_name /* [in] */,
 
 /************************************************************//**
  *
+ * NetWkstaGetInfo
+ *
+ * @brief Get Information on a workstation
+ *
+ * @param[in] wksta_name The workstation name to connect to
+ * @param[in] level The level to define which information is requested
+ * @param[out] buffer The returned buffer carrying the WKSTA_INFO structure
+ * @return NET_API_STATUS
+ *
+ ***************************************************************/
+
+NET_API_STATUS NetWkstaGetInfo(const char * wksta_name /* [in] */,
+				uint32_t level /* [in] */,
+				uint8_t **buffer /* [out] [ref] */);
+
+/************************************************************//**
+ *
  * NetGetDCName
  *
  * @brief Query for the PDC for a given domain
diff --git a/source3/lib/netapi/tests/netapitest.c b/source3/lib/netapi/tests/netapitest.c
index 00e5b2a..fd367bd 100644
--- a/source3/lib/netapi/tests/netapitest.c
+++ b/source3/lib/netapi/tests/netapitest.c
@@ -94,6 +94,11 @@ int main(int argc, const char **argv)
 		goto out;
 	}
 
+	status = netapitest_wksta(ctx, hostname);
+	if (status) {
+		goto out;
+	}
+
  out:
 	if (status != 0) {
 		printf("testsuite failed with: %s\n",
diff --git a/source3/lib/netapi/tests/netwksta.c b/source3/lib/netapi/tests/netwksta.c
new file mode 100644
index 0000000..2c3f57f
--- /dev/null
+++ b/source3/lib/netapi/tests/netwksta.c
@@ -0,0 +1,62 @@
+/*
+ *  Unix SMB/CIFS implementation.
+ *  NetWorkstation testsuite
+ *  Copyright (C) Guenther Deschner 2008
+ *  Copyright (C) Hans Leidekker 2013
+ *
+ *  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"
+
+NET_API_STATUS netapitest_wksta(struct libnetapi_ctx *ctx,
+				const char *hostname)
+{
+	NET_API_STATUS status = 0;
+	uint32_t levels[] = { 100, 101, 102 };
+	int i;
+
+	printf("NetWorkstation tests\n");
+
+	/* basic queries */
+	for (i=0; i<ARRAY_SIZE(levels); i++) {
+		uint8_t *buffer = NULL;
+		printf("testing NetWkstaGetInfo level %d\n", levels[i]);
+
+		status = NetWkstaGetInfo(hostname, levels[i], &buffer);
+		if (status && status != 124) {
+			NETAPI_STATUS(ctx, status, "NetWkstaGetInfo");
+			goto out;
+		}
+	}
+
+	status = 0;
+
+	printf("NetWorkstation tests succeeded\n");
+ out:
+	if (status != 0) {
+		printf("NetWorkstation testsuite failed with: %s\n",
+		       libnetapi_get_error_string(ctx, status));
+	}
+
+	return status;
+}
diff --git a/source3/lib/netapi/tests/wscript_build b/source3/lib/netapi/tests/wscript_build
index 75f3cdf..5e37297 100644
--- a/source3/lib/netapi/tests/wscript_build
+++ b/source3/lib/netapi/tests/wscript_build
@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 
 bld.SAMBA_BINARY('netapitest',
-                 source='netapitest.c netlocalgroup.c netuser.c netgroup.c netdisplay.c netshare.c netfile.c netserver.c common.c',
+                 source='netapitest.c netlocalgroup.c netuser.c netgroup.c netdisplay.c netshare.c netfile.c netserver.c netwksta.c common.c',
                  deps='netapi popt',
                  install=False)
diff --git a/source3/lib/netapi/wkstainfo.c b/source3/lib/netapi/wkstainfo.c
new file mode 100644
index 0000000..cda4b50
--- /dev/null
+++ b/source3/lib/netapi/wkstainfo.c
@@ -0,0 +1,153 @@
+/*
+ *  Unix SMB/CIFS implementation.
+ *  NetApi Workstation Support
+ *  Copyright (C) Guenther Deschner 2007
+ *  Copyright (C) Hans Leidekker 2013
+ *
+ *  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 "librpc/gen_ndr/libnetapi.h"
+#include "lib/netapi/netapi.h"
+#include "lib/netapi/netapi_private.h"
+#include "lib/netapi/libnetapi.h"
+#include "../librpc/gen_ndr/ndr_wkssvc_c.h"
+#include "lib/smbconf/smbconf.h"
+#include "lib/smbconf/smbconf_reg.h"
+
+/****************************************************************
+****************************************************************/
+
+WERROR NetWkstaGetInfo_l(struct libnetapi_ctx *ctx,
+                         struct NetWkstaGetInfo *r)
+{
+        LIBNETAPI_REDIRECT_TO_LOCALHOST(ctx, r, NetWkstaGetInfo);
+}
+
+/****************************************************************
+****************************************************************/
+
+static NTSTATUS map_wksta_info_to_WKSTA_INFO_buffer(TALLOC_CTX *mem_ctx,
+                                                    uint32_t level,
+                                                    union wkssvc_NetWkstaInfo *i,
+                                                    uint8_t **buffer)
+{
+	struct WKSTA_INFO_100 i100;
+	struct WKSTA_INFO_101 i101;
+	struct WKSTA_INFO_102 i102;
+	uint32_t num_info = 0;
+
+	switch (level) {
+	case 100:
+		i100.wki100_platform_id		= i->info100->platform_id;
+		i100.wki100_computername	= talloc_strdup(mem_ctx, i->info100->server_name);
+		i100.wki100_langroup		= talloc_strdup(mem_ctx, i->info100->domain_name);
+		i100.wki100_ver_major		= i->info100->version_major;
+		i100.wki100_ver_minor		= i->info100->version_minor;
+
+		ADD_TO_ARRAY(mem_ctx, struct WKSTA_INFO_100, i100,
+			     (struct WKSTA_INFO_100 **)buffer,
+			     &num_info);
+		break;
+
+	case 101:
+		i101.wki101_platform_id		= i->info101->platform_id;
+		i101.wki101_computername	= talloc_strdup(mem_ctx, i->info101->server_name);
+		i101.wki101_langroup		= talloc_strdup(mem_ctx, i->info101->domain_name);
+		i101.wki101_ver_major		= i->info101->version_major;
+		i101.wki101_ver_minor		= i->info101->version_minor;
+		i101.wki101_lanroot		= talloc_strdup(mem_ctx, i->info101->lan_root);
+
+		ADD_TO_ARRAY(mem_ctx, struct WKSTA_INFO_101, i101,
+			     (struct WKSTA_INFO_101 **)buffer,
+			     &num_info);
+		break;
+
+	case 102:
+		i102.wki102_platform_id		= i->info102->platform_id;
+		i102.wki102_computername	= talloc_strdup(mem_ctx, i->info102->server_name);
+		i102.wki102_langroup		= talloc_strdup(mem_ctx, i->info102->domain_name);
+		i102.wki102_ver_major		= i->info102->version_major;
+		i102.wki102_ver_minor		= i->info102->version_minor;
+		i102.wki102_lanroot		= talloc_strdup(mem_ctx, i->info102->lan_root);
+
+		ADD_TO_ARRAY(mem_ctx, struct WKSTA_INFO_102, i102,
+			     (struct WKSTA_INFO_102 **)buffer,
+			     &num_info);
+		break;
+
+	default:
+		return NT_STATUS_NOT_SUPPORTED;
+	}
+
+	return NT_STATUS_OK;
+}
+
+/****************************************************************
+****************************************************************/
+
+WERROR NetWkstaGetInfo_r(struct libnetapi_ctx *ctx,
+			 struct NetWkstaGetInfo *r)
+{
+	NTSTATUS status;
+	WERROR werr;
+	union wkssvc_NetWkstaInfo info;
+	struct dcerpc_binding_handle *b;
+
+	if (!r->out.buffer) {
+		return WERR_INVALID_PARAM;
+	}
+
+	switch (r->in.level) {
+		case 100:
+		case 101:
+		case 102:
+			break;
+		default:
+			return WERR_UNKNOWN_LEVEL;
+	}
+
+	werr = libnetapi_get_binding_handle(ctx, r->in.server_name,
+					    &ndr_table_wkssvc,
+					    &b);
+	if (!W_ERROR_IS_OK(werr)) {
+		goto done;
+	}
+
+	status = dcerpc_wkssvc_NetWkstaGetInfo(b, talloc_tos(),
+					       r->in.server_name,
+					       r->in.level,
+					       &info,
+					       &werr);
+	if (!NT_STATUS_IS_OK(status)) {
+		werr = ntstatus_to_werror(status);
+		goto done;
+	}
+
+	if (!W_ERROR_IS_OK(werr)) {
+		goto done;
+	}
+
+	status = map_wksta_info_to_WKSTA_INFO_buffer(ctx, r->in.level, &info,
+						     r->out.buffer);
+	if (!NT_STATUS_IS_OK(status)) {
+		werr = ntstatus_to_werror(status);
+		goto done;
+	}
+
+ done:
+	return werr;
+}
diff --git a/source3/librpc/idl/libnetapi.idl b/source3/librpc/idl/libnetapi.idl
index 935256a..9018d76 100644
--- a/source3/librpc/idl/libnetapi.idl
+++ b/source3/librpc/idl/libnetapi.idl
@@ -777,6 +777,43 @@ interface libnetapi
 		);
 
 	/*******************************************/
+	/* NetWkstaGetInfo                         */
+	/*******************************************/
+
+	[public] typedef struct {
+		uint32 wki100_platform_id;
+		string wki100_computername;
+		string wki100_langroup;
+		uint32 wki100_ver_major;
+		uint32 wki100_ver_minor;
+	} WKSTA_INFO_100;
+
+	[public] typedef struct {
+		uint32 wki101_platform_id;
+		string wki101_computername;
+		string wki101_langroup;
+		uint32 wki101_ver_major;
+		uint32 wki101_ver_minor;
+		string wki101_lanroot;
+	} WKSTA_INFO_101;
+
+	[public] typedef struct {
+		uint32 wki102_platform_id;
+		string wki102_computername;
+		string wki102_langroup;
+		uint32 wki102_ver_major;
+		uint32 wki102_ver_minor;
+		string wki102_lanroot;
+		uint32 wki102_logged_on_users;
+	} WKSTA_INFO_102;
+
+	[nopush,nopull] NET_API_STATUS NetWkstaGetInfo(
+		[in,unique] string *server_name,
+		[in] uint32 level,
+		[out] uint8 **buffer
+		);
+
+	/*******************************************/
 	/* NetGetDCName                            */
 	/*******************************************/
 
diff --git a/source3/wscript_build b/source3/wscript_build
index 40d03b2..0b3aed3 100755
--- a/source3/wscript_build
+++ b/source3/wscript_build
@@ -27,6 +27,7 @@ bld.SAMBA3_LIBRARY('netapi',
                     lib/netapi/libnetapi.c
                     lib/netapi/joindomain.c
                     lib/netapi/serverinfo.c
+                    lib/netapi/wkstainfo.c
                     lib/netapi/getdc.c
                     lib/netapi/user.c
                     lib/netapi/group.c
-- 
1.8.4.rc3



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