Add files for new LGPL libwbclient DSO implementing the Winbind client API

(based on the winbind_struct_protocol.h).

The API in incomplete, but sufficient to merge.  See wbclienbt.h for the i
interface functions.
(This used to be commit 83d274b46078a9ace77edb822a0e336c79dcf40e)

1 files changed, 272 insertions, 0 deletions

diff --git a/source3/nsswitch/libwbclient/wbc_idmap.c b/source3/nsswitch/libwbclient/wbc_idmap.c
new file mode 100644
index 0000000000..651c270a57
--- /dev/null
+++ b/source3/nsswitch/libwbclient/wbc_idmap.c
@@ -0,0 +1,272 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Winbind client API
+
+   Copyright (C) Gerald (Jerry) Carter 2007
+
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 3 of the License, or (at your option) any later version.
+
+   This library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/* Required Headers */
+
+#include "libwbclient.h"
+
+/** @brief Convert a Windows SID to a Unix uid
+ *
+ * @param *sid        Pointer to the domain SID to be resolved
+ * @param *puid       Pointer to the resolved uid_t value
+ *
+ * @return #wbcErr
+ *
+ **/
+
+wbcErr wbcSidToUid(const struct wbcDomainSid *sid, uid_t *puid)
+{
+	struct winbindd_request request;
+	struct winbindd_response response;
+	char *sid_string = NULL;
+	wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
+
+	if (!sid || !puid) {
+		wbc_status = WBC_ERR_INVALID_PARAM;
+		BAIL_ON_WBC_ERROR(wbc_status);
+	}
+
+	/* Initialize request */
+
+	ZERO_STRUCT(request);
+	ZERO_STRUCT(response);
+
+	wbc_status = wbcSidToString(sid, &sid_string);
+	BAIL_ON_WBC_ERROR(wbc_status);
+
+	strncpy(request.data.sid, sid_string, sizeof(request.data.sid)-1);
+	wbcFreeMemory(sid_string);
+
+	/* Make request */
+
+	wbc_status = wbcRequestResponse(WINBINDD_SID_TO_UID,
+					&request,
+					&response);
+	BAIL_ON_WBC_ERROR(wbc_status);
+
+	*puid = response.data.uid;
+
+	wbc_status = WBC_ERR_SUCCESS;
+
+ done:
+	return wbc_status;
+}
+
+/** @brief Convert a Unix uid to a Windows SID
+ *
+ * @param uid         Unix uid to be resolved
+ * @param *sid        Pointer to the resolved domain SID
+ *
+ * @return #wbcErr
+ *
+ **/
+
+wbcErr wbcUidToSid(uid_t uid, struct wbcDomainSid *sid)
+{
+	wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
+	struct winbindd_request request;
+	struct winbindd_response response;
+
+	if (!sid) {
+		wbc_status = WBC_ERR_INVALID_PARAM;
+		BAIL_ON_WBC_ERROR(wbc_status);
+	}
+
+	/* Initialize request */
+
+	ZERO_STRUCT(request);
+	ZERO_STRUCT(response);
+
+	request.data.uid = uid;
+
+	/* Make request */
+
+	wbc_status = wbcRequestResponse(WINBINDD_UID_TO_SID,
+					&request,
+					&response);
+	BAIL_ON_WBC_ERROR(wbc_status);
+
+	wbc_status = wbcStringToSid(response.data.sid.sid, sid);
+	BAIL_ON_WBC_ERROR(wbc_status);
+
+done:
+	return wbc_status;
+}
+
+/** @brief Convert a Windows SID to a Unix gid
+ *
+ * @param *sid        Pointer to the domain SID to be resolved
+ * @param *pgid       Pointer to the resolved gid_t value
+ *
+ * @return #wbcErr
+ *
+ **/
+
+wbcErr wbcSidToGid(const struct wbcDomainSid *sid, gid_t *pgid)
+{
+	struct winbindd_request request;
+	struct winbindd_response response;
+	wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
+	char *sid_string = NULL;
+
+	if (!sid || !pgid) {
+		wbc_status = WBC_ERR_INVALID_PARAM;
+		BAIL_ON_WBC_ERROR(wbc_status);
+	}
+
+	/* Initialize request */
+
+	ZERO_STRUCT(request);
+	ZERO_STRUCT(response);
+
+	wbc_status = wbcSidToString(sid, &sid_string);
+	BAIL_ON_WBC_ERROR(wbc_status);
+
+	strncpy(request.data.sid, sid_string, sizeof(request.data.sid)-1);
+	wbcFreeMemory(sid_string);
+
+	/* Make request */
+
+	wbc_status = wbcRequestResponse(WINBINDD_SID_TO_GID,
+					&request,
+					&response);
+	BAIL_ON_WBC_ERROR(wbc_status);
+
+	*pgid = response.data.gid;
+
+	wbc_status = WBC_ERR_SUCCESS;
+
+ done:
+	return wbc_status;
+}
+
+/** @brief Convert a Unix uid to a Windows SID
+ *
+ * @param gid         Unix gid to be resolved
+ * @param *sid        Pointer to the resolved domain SID
+ *
+ * @return #wbcErr
+ *
+ **/
+
+wbcErr wbcGidToSid(gid_t gid, struct wbcDomainSid *sid)
+{
+	struct winbindd_request request;
+	struct winbindd_response response;
+	wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
+
+	if (!sid) {
+		wbc_status = WBC_ERR_INVALID_PARAM;
+		BAIL_ON_WBC_ERROR(wbc_status);
+	}
+
+	/* Initialize request */
+
+	ZERO_STRUCT(request);
+	ZERO_STRUCT(response);
+
+	request.data.gid = gid;
+
+	/* Make request */
+
+	wbc_status = wbcRequestResponse(WINBINDD_GID_TO_SID,
+					&request,
+					&response);
+	BAIL_ON_WBC_ERROR(wbc_status);
+
+	wbc_status = wbcStringToSid(response.data.sid.sid, sid);
+	BAIL_ON_WBC_ERROR(wbc_status);
+
+done:
+	return wbc_status;
+}
+
+/** @brief Obtain a new uid from Winbind
+ *
+ * @param *puid      *pointer to the allocated uid
+ *
+ * @return #wbcErr
+ **/
+
+wbcErr wbcAllocateUid(uid_t *puid)
+{
+	struct winbindd_request request;
+	struct winbindd_response response;
+	NSS_STATUS result;
+
+	if (!puid)
+		return WBC_ERR_INVALID_PARAM;
+
+	/* Initialise request */
+
+	ZERO_STRUCT(request);
+	ZERO_STRUCT(response);
+
+	/* Make request */
+
+	result = wbcRequestResponse(WINBINDD_ALLOCATE_UID,
+					   &request, &response);
+
+	if (result != NSS_STATUS_SUCCESS)
+		return WBC_ERR_UNKNOWN_FAILURE;
+
+	/* Copy out result */
+	*puid = response.data.uid;
+
+	return WBC_ERR_SUCCESS;
+}
+
+/** @brief Obtain a new gid from Winbind
+ *
+ * @param *pgid      Pointer to the allocated gid
+ *
+ * @return #wbcErr
+ **/
+
+wbcErr wbcAllocateGid(uid_t *pgid)
+{
+	struct winbindd_request request;
+	struct winbindd_response response;
+	NSS_STATUS result;
+
+	if (!pgid)
+		return WBC_ERR_INVALID_PARAM;
+
+	/* Initialise request */
+
+	ZERO_STRUCT(request);
+	ZERO_STRUCT(response);
+
+	/* Make request */
+
+	result = wbcRequestResponse(WINBINDD_ALLOCATE_GID,
+					   &request, &response);
+
+	if (result != NSS_STATUS_SUCCESS)
+		return WBC_ERR_UNKNOWN_FAILURE;
+
+	/* Copy out result */
+	*pgid = response.data.gid;
+
+	return WBC_ERR_SUCCESS;
+}
+