[SSSD] [PATCH] libwbclient: SSSD implementation

Sumit Bose sbose at redhat.com
Tue Jul 22 08:51:41 UTC 2014


Hi,

this patch contains the libwbclient implementation for SSSD to allow
Samba file-servers and utilities to use SSSD instead of winbind to map
SIDs, names and POSIX IDs. The related ticket is
https://fedorahosted.org/sssd/ticket/1588.

The SSSD specific calls can be found in files with '_sssd' as part of
the name, the other files are mainly taken from the original Samba
sources because they contain API calls which are independent of the
backend. I have made some minor modification to meet the SSSD coding
style but tried to avoid major changes to make a diff to the original
version more easy. If major issue are found during review I think it
would be a good idea to try to bring the changes back to samba as well.

In wbc_pwd_sssd.c instead of linking in the related sources of the NSS
client I dlopen-ed libnss_sss.so.2 to have more flexibility about where
and how to build the library. I you think this is too much overhead I'd
be happy to change the code to use the NSS client call directly.

The patch does not contain unit test because the Samba source code
already contains some basic tests. I'll try to work with the samba
package maintainer to make this code in a samba-devel or samba-test
package available so that it can be used by SSSD as well.

Basic functional test can be run manually with wbinfo, e.g.:

$ /usr/bin/wbinfo -n 'AD18\Administrator'
S-1-5-21-3090815309-2627318493-3395719201-500 SID_USER (1)
$ /usr/bin/wbinfo -S S-1-5-21-3090815309-2627318493-3395719201-500
1670800500

bye,
Sumit
-------------- next part --------------
From 676cf42d5749c9a76f145968c9e0afa6438ba700 Mon Sep 17 00:00:00 2001
From: Sumit Bose <sbose at redhat.com>
Date: Tue, 15 Jul 2014 18:13:24 +0200
Subject: [PATCH] libwbclient: SSSD implementation

This patch implements the libwbclient API for Samba daemons and
utilities. The main purpose is to map Active Directory users and groups
identified by their SID to POSIX users and groups identified by their
POSIX UIDs and GIDs respectively.

The API is not fully implemented because SSSD does not support some AD
features like WINS or NTLM. Additionally this implementation has its
focus on the file-server use case and hence does not implement some
features which might be needed for a domain controller use case.

Some API calls are generic and independent of the backend like e.g.
converting binary SIDs and GUIDs into a string representation and back
or memory allocation and deallocation. These parts are taken from the
original Samba sources together with copyright and authors. Files
with'_sssd' as part of the name contain the SSSD related calls.

Resolves: https://fedorahosted.org/sssd/ticket/1588
---
 Makefile.am                                    |   33 +-
 configure.ac                                   |    1 +
 contrib/sssd.spec.in                           |   26 +
 src/sss_client/libwbclient/libwbclient.h       |   46 +
 src/sss_client/libwbclient/wbc_err_internal.h  |   44 +
 src/sss_client/libwbclient/wbc_guid.c          |  100 ++
 src/sss_client/libwbclient/wbc_idmap_common.c  |   89 ++
 src/sss_client/libwbclient/wbc_idmap_sssd.c    |  204 ++++
 src/sss_client/libwbclient/wbc_pam_sssd.c      |  151 +++
 src/sss_client/libwbclient/wbc_pwd_sssd.c      |  659 ++++++++++++
 src/sss_client/libwbclient/wbc_sid_common.c    |  199 ++++
 src/sss_client/libwbclient/wbc_sid_sssd.c      |  276 +++++
 src/sss_client/libwbclient/wbc_sssd_internal.h |   41 +
 src/sss_client/libwbclient/wbc_util_common.c   |   97 ++
 src/sss_client/libwbclient/wbc_util_sssd.c     |  160 +++
 src/sss_client/libwbclient/wbclient.exports    |   90 ++
 src/sss_client/libwbclient/wbclient.h          | 1372 ++++++++++++++++++++++++
 src/sss_client/libwbclient/wbclient.pc.in      |   11 +
 src/sss_client/libwbclient/wbclient_common.c   |  178 +++
 src/sss_client/libwbclient/wbclient_internal.h |   44 +
 src/sss_client/libwbclient/wbclient_sssd.c     |   40 +
 21 files changed, 3859 insertions(+), 2 deletions(-)
 create mode 100644 src/sss_client/libwbclient/libwbclient.h
 create mode 100644 src/sss_client/libwbclient/wbc_err_internal.h
 create mode 100644 src/sss_client/libwbclient/wbc_guid.c
 create mode 100644 src/sss_client/libwbclient/wbc_idmap_common.c
 create mode 100644 src/sss_client/libwbclient/wbc_idmap_sssd.c
 create mode 100644 src/sss_client/libwbclient/wbc_pam_sssd.c
 create mode 100644 src/sss_client/libwbclient/wbc_pwd_sssd.c
 create mode 100644 src/sss_client/libwbclient/wbc_sid_common.c
 create mode 100644 src/sss_client/libwbclient/wbc_sid_sssd.c
 create mode 100644 src/sss_client/libwbclient/wbc_sssd_internal.h
 create mode 100644 src/sss_client/libwbclient/wbc_util_common.c
 create mode 100644 src/sss_client/libwbclient/wbc_util_sssd.c
 create mode 100644 src/sss_client/libwbclient/wbclient.exports
 create mode 100644 src/sss_client/libwbclient/wbclient.h
 create mode 100644 src/sss_client/libwbclient/wbclient.pc.in
 create mode 100644 src/sss_client/libwbclient/wbclient_common.c
 create mode 100644 src/sss_client/libwbclient/wbclient_internal.h
 create mode 100644 src/sss_client/libwbclient/wbclient_sssd.c

diff --git a/Makefile.am b/Makefile.am
index e359286..adb981b 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -574,6 +574,10 @@ dist_noinst_HEADERS = \
     src/tests/cmocka/common_mock_sysdb_objects.h \
     src/sss_client/ssh/sss_ssh_client.h \
     src/sss_client/sudo/sss_sudo.h \
+    src/sss_client/libwbclient/libwbclient.h \
+    src/sss_client/libwbclient/wbc_err_internal.h \
+    src/sss_client/libwbclient/wbclient_internal.h \
+    src/sss_client/libwbclient/wbc_sssd_internal.h \
     src/lib/idmap/sss_idmap_private.h \
     src/lib/sifp/sss_sifp_private.h
 
@@ -713,7 +717,7 @@ libsss_config_la_LDFLAGS = \
 endif # BUILD_CONFIG_LIB
 endif # BUILD_IFP
 
-lib_LTLIBRARIES = libipa_hbac.la libsss_idmap.la libsss_nss_idmap.la
+lib_LTLIBRARIES = libipa_hbac.la libsss_idmap.la libsss_nss_idmap.la libwbclient.la
 pkgconfig_DATA += src/providers/ipa/ipa_hbac.pc
 libipa_hbac_la_DEPENDENCIES = src/providers/ipa/ipa_hbac.exports
 libipa_hbac_la_SOURCES = \
@@ -753,11 +757,36 @@ libsss_nss_idmap_la_LDFLAGS = \
 
 dist_noinst_DATA += src/sss_client/idmap/sss_nss_idmap.exports
 
+pkgconfig_DATA += src/sss_client/libwbclient/wbclient.pc
+libwbclient_la_DEPENDENCIES = src/sss_client/libwbclient/wbclient.exports
+libwbclient_la_SOURCES = \
+    src/sss_client/libwbclient/wbc_guid.c \
+    src/sss_client/libwbclient/wbc_idmap_common.c \
+    src/sss_client/libwbclient/wbc_idmap_sssd.c \
+    src/sss_client/libwbclient/wbclient_common.c \
+    src/sss_client/libwbclient/wbclient_sssd.c \
+    src/sss_client/libwbclient/wbc_pam_sssd.c \
+    src/sss_client/libwbclient/wbc_pwd_sssd.c \
+    src/sss_client/libwbclient/wbc_sid_common.c \
+    src/sss_client/libwbclient/wbc_sid_sssd.c \
+    src/sss_client/libwbclient/wbc_sssd_internal.h \
+    src/sss_client/libwbclient/wbc_util_common.c \
+    src/sss_client/libwbclient/wbc_util_sssd.c
+libwbclient_la_LIBADD = \
+    libsss_nss_idmap.la \
+    $(CLIENT_LIBS)
+libwbclient_la_LDFLAGS = \
+    -Wl,--version-script,$(srcdir)/src/sss_client/libwbclient/wbclient.exports \
+    -version-info 11:0:11
+
+dist_noinst_DATA += src/sss_client/libwbclient/wbclient.exports
+
 
 include_HEADERS = \
     src/providers/ipa/ipa_hbac.h \
     src/lib/idmap/sss_idmap.h \
-    src/sss_client/idmap/sss_nss_idmap.h
+    src/sss_client/idmap/sss_nss_idmap.h \
+    src/sss_client/libwbclient/wbclient.h
 
 if BUILD_IFP
 lib_LTLIBRARIES += libsss_simpleifp.la
diff --git a/configure.ac b/configure.ac
index 3865421..d20cb9c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -323,6 +323,7 @@ AC_CONFIG_FILES([Makefile contrib/sssd.spec src/examples/rwtab src/doxy.config
                  src/sss_client/sudo/sss_sudo.doxy
                  src/sss_client/idmap/sss_nss_idmap.pc
                  src/sss_client/idmap/sss_nss_idmap.doxy
+                 src/sss_client/libwbclient/wbclient.pc
                  src/lib/sifp/sss_simpleifp.pc
                  src/lib/sifp/sss_simpleifp.doxy
                  src/config/setup.py
diff --git a/contrib/sssd.spec.in b/contrib/sssd.spec.in
index 82d8e89..d781936 100644
--- a/contrib/sssd.spec.in
+++ b/contrib/sssd.spec.in
@@ -427,6 +427,22 @@ Requires: libsss_simpleifp = %{version}-%{release}
 %description -n libsss_simpleifp-devel
 Provides library that simplifies D-Bus API for the SSSD InfoPipe responder.
 
+%package libwbclient
+Summary: The SSSD libwbclient implementation
+Group: Applications/System
+License: GPLv3+ and LGPLv3+
+
+%description libwbclient
+The SSSD libwbclient implementation.
+
+%package libwbclient-devel
+Summary: Development libraries for the SSSD libwbclient implementation
+Group:  Development/Libraries 
+License: GPLv3+ and LGPLv3+
+
+%description libwbclient-devel
+Development libraries for the SSSD libwbclient implementation.
+
 %prep
 %setup -q -n %{name}-%{version}
 
@@ -821,6 +837,16 @@ rm -rf $RPM_BUILD_ROOT
 %defattr(-,root,root,-)
 %{python_sitearch}/pyhbac.so
 
+%files libwbclient
+%defattr(-,root,root,-)
+%{_libdir}/libwbclient.so.*
+
+%files libwbclient-devel
+%defattr(-,root,root,-)
+%{_includedir}/wbclient.h
+%{_libdir}/libwbclient.so
+%{_libdir}/pkgconfig/wbclient.pc
+
 %if (0%{?use_systemd} == 1)
 # systemd
 %post common
diff --git a/src/sss_client/libwbclient/libwbclient.h b/src/sss_client/libwbclient/libwbclient.h
new file mode 100644
index 0000000..79d9be2
--- /dev/null
+++ b/src/sss_client/libwbclient/libwbclient.h
@@ -0,0 +1,46 @@
+/*
+   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/>.
+*/
+
+#ifndef _LIBWBCLIENT_H
+#define _LIBWBCLIENT_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+/* Super header including necessary public and private header files
+   for building the wbclient library.  __DO NOT__ define anything
+   in this file.  Only include other headers. */
+
+/* Public headers */
+
+#include "wbclient.h"
+
+/* Private headers */
+
+#include "wbc_err_internal.h"
+#include "wbclient_internal.h"
+
+
+#endif      /* _LIBWBCLIENT_H */
diff --git a/src/sss_client/libwbclient/wbc_err_internal.h b/src/sss_client/libwbclient/wbc_err_internal.h
new file mode 100644
index 0000000..65970a9
--- /dev/null
+++ b/src/sss_client/libwbclient/wbc_err_internal.h
@@ -0,0 +1,44 @@
+/*
+   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/>.
+*/
+
+#ifndef _WBC_ERR_INTERNAL_H
+#define _WBC_ERR_INTERNAL_H
+
+/* Private macros */
+
+#define BAIL_ON_WBC_ERROR(x)       \
+    do {                           \
+        if (!WBC_ERROR_IS_OK(x)) { \
+            goto done;             \
+        }                          \
+    } while(0)
+
+#define BAIL_ON_PTR_ERROR(x, status)    \
+    do {                                \
+        if ((x) == NULL) {              \
+            status = WBC_ERR_NO_MEMORY; \
+            goto done;                  \
+        } else {                        \
+            status = WBC_ERR_SUCCESS;   \
+        }                               \
+    } while (0)
+
+#endif /* _WBC_ERR_INTERNAL_H */
diff --git a/src/sss_client/libwbclient/wbc_guid.c b/src/sss_client/libwbclient/wbc_guid.c
new file mode 100644
index 0000000..22f7725
--- /dev/null
+++ b/src/sss_client/libwbclient/wbc_guid.c
@@ -0,0 +1,100 @@
+/*
+   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"
+
+/* Convert a binary GUID to a character string */
+wbcErr wbcGuidToString(const struct wbcGuid *guid,
+               char **guid_string)
+{
+    char *result;
+
+    result = (char *)wbcAllocateMemory(37, 1, NULL);
+    if (result == NULL) {
+        return WBC_ERR_NO_MEMORY;
+    }
+    snprintf(result, 37,
+         "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
+         guid->time_low, guid->time_mid,
+         guid->time_hi_and_version,
+         guid->clock_seq[0],
+         guid->clock_seq[1],
+         guid->node[0], guid->node[1],
+         guid->node[2], guid->node[3],
+         guid->node[4], guid->node[5]);
+    *guid_string = result;
+
+    return WBC_ERR_SUCCESS;
+}
+
+/* @brief Convert a character string to a binary GUID */
+wbcErr wbcStringToGuid(const char *str,
+               struct wbcGuid *guid)
+{
+    uint32_t time_low;
+    uint32_t time_mid, time_hi_and_version;
+    uint32_t clock_seq[2];
+    uint32_t node[6];
+    int i;
+    wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
+
+    if (!guid) {
+        wbc_status = WBC_ERR_INVALID_PARAM;
+        BAIL_ON_WBC_ERROR(wbc_status);
+    }
+
+    if (!str) {
+        wbc_status = WBC_ERR_INVALID_PARAM;
+        BAIL_ON_WBC_ERROR(wbc_status);
+    }
+
+    if (11 == sscanf(str, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
+             &time_low, &time_mid, &time_hi_and_version,
+             &clock_seq[0], &clock_seq[1],
+             &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
+            wbc_status = WBC_ERR_SUCCESS;
+    } else if (11 == sscanf(str, "{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
+                &time_low, &time_mid, &time_hi_and_version,
+                &clock_seq[0], &clock_seq[1],
+                &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
+            wbc_status = WBC_ERR_SUCCESS;
+    }
+
+    BAIL_ON_WBC_ERROR(wbc_status);
+
+    guid->time_low = time_low;
+    guid->time_mid = time_mid;
+    guid->time_hi_and_version = time_hi_and_version;
+    guid->clock_seq[0] = clock_seq[0];
+    guid->clock_seq[1] = clock_seq[1];
+
+    for (i=0;i<6;i++) {
+        guid->node[i] = node[i];
+    }
+
+    wbc_status = WBC_ERR_SUCCESS;
+
+done:
+    return wbc_status;
+}
diff --git a/src/sss_client/libwbclient/wbc_idmap_common.c b/src/sss_client/libwbclient/wbc_idmap_common.c
new file mode 100644
index 0000000..ef30d27
--- /dev/null
+++ b/src/sss_client/libwbclient/wbc_idmap_common.c
@@ -0,0 +1,89 @@
+/*
+   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"
+
+/* Convert a Windows SID to a Unix uid if there already is a mapping */
+wbcErr wbcQuerySidToUid(const struct wbcDomainSid *sid,
+            uid_t *puid)
+{
+    return WBC_ERR_NOT_IMPLEMENTED;
+}
+
+/* Convert a Unix uid to a Windows SID if there already is a mapping */
+wbcErr wbcQueryUidToSid(uid_t uid,
+            struct wbcDomainSid *sid)
+{
+    return WBC_ERR_NOT_IMPLEMENTED;
+}
+
+/* Convert a Windows SID to a Unix gid if there already is a mapping */
+wbcErr wbcQuerySidToGid(const struct wbcDomainSid *sid,
+            gid_t *pgid)
+{
+    return WBC_ERR_NOT_IMPLEMENTED;
+}
+
+
+/* Convert a Unix gid to a Windows SID if there already is a mapping */
+wbcErr wbcQueryGidToSid(gid_t gid,
+            struct wbcDomainSid *sid)
+{
+    return WBC_ERR_NOT_IMPLEMENTED;
+}
+
+/* Set an user id mapping - not implemented any more */
+wbcErr wbcSetUidMapping(uid_t uid, const struct wbcDomainSid *sid)
+{
+    return WBC_ERR_NOT_IMPLEMENTED;
+}
+
+/* Set a group id mapping - not implemented any more */
+wbcErr wbcSetGidMapping(gid_t gid, const struct wbcDomainSid *sid)
+{
+    return WBC_ERR_NOT_IMPLEMENTED;
+}
+
+/* Remove a user id mapping - not implemented any more */
+wbcErr wbcRemoveUidMapping(uid_t uid, const struct wbcDomainSid *sid)
+{
+    return WBC_ERR_NOT_IMPLEMENTED;
+}
+
+/* Remove a group id mapping - not implemented any more */
+wbcErr wbcRemoveGidMapping(gid_t gid, const struct wbcDomainSid *sid)
+{
+    return WBC_ERR_NOT_IMPLEMENTED;
+}
+
+/* Set the highwater mark for allocated uids - not implemented any more */
+wbcErr wbcSetUidHwm(uid_t uid_hwm)
+{
+    return WBC_ERR_NOT_IMPLEMENTED;
+}
+
+/* Set the highwater mark for allocated gids - not implemented any more */
+wbcErr wbcSetGidHwm(gid_t gid_hwm)
+{
+    return WBC_ERR_NOT_IMPLEMENTED;
+}
diff --git a/src/sss_client/libwbclient/wbc_idmap_sssd.c b/src/sss_client/libwbclient/wbc_idmap_sssd.c
new file mode 100644
index 0000000..430de0c
--- /dev/null
+++ b/src/sss_client/libwbclient/wbc_idmap_sssd.c
@@ -0,0 +1,204 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Winbind client API - SSSD version
+
+   Copyright (C) Sumit Bose <sbose at redhat.com> 2014
+
+   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 <sss_nss_idmap.h>
+
+#include "libwbclient.h"
+#include "wbc_sssd_internal.h"
+
+/* Convert a Windows SID to a Unix uid, allocating an uid if needed */
+wbcErr wbcSidToUid(const struct wbcDomainSid *sid, uid_t *puid)
+{
+    int ret;
+    char *sid_str;
+    uint32_t id;
+    enum sss_id_type type;
+    wbcErr wbc_status;
+
+    wbc_status = wbcSidToString(sid, &sid_str);
+    if (!WBC_ERROR_IS_OK(wbc_status)) {
+        return wbc_status;
+    }
+
+    ret = sss_nss_getidbysid(sid_str, &id, &type);
+    wbcFreeMemory(sid_str);
+    if (ret != 0) {
+        return WBC_ERR_UNKNOWN_FAILURE;
+    }
+
+    if (type != SSS_ID_TYPE_UID && type != SSS_ID_TYPE_BOTH) {
+        return WBC_ERR_UNKNOWN_GROUP;
+    }
+
+    *puid = (uid_t) id;
+
+    return WBC_ERR_SUCCESS;
+}
+
+/* Convert a Unix uid to a Windows SID, allocating a SID if needed */
+wbcErr wbcUidToSid(uid_t uid, struct wbcDomainSid *sid)
+{
+    int ret;
+    char *str_sid;
+    enum sss_id_type type;
+    wbcErr wbc_status;
+
+    ret = sss_nss_getsidbyid(uid, &str_sid, &type);
+    if (ret != 0) {
+        return WBC_ERR_UNKNOWN_FAILURE;
+    }
+
+    if (type != SSS_ID_TYPE_UID && type != SSS_ID_TYPE_BOTH) {
+        free(str_sid);
+        return WBC_ERR_UNKNOWN_USER;
+    }
+
+    wbc_status = wbcStringToSid(str_sid, sid);
+    free(str_sid);
+    if (!WBC_ERROR_IS_OK(wbc_status)) {
+        return wbc_status;
+    }
+
+    return WBC_ERR_SUCCESS;
+}
+
+/** @brief Convert a Windows SID to a Unix gid, allocating a gid if needed
+ *
+ * @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)
+{
+    int ret;
+    char *sid_str;
+    uint32_t id;
+    enum sss_id_type type;
+    wbcErr wbc_status;
+
+    wbc_status = wbcSidToString(sid, &sid_str);
+    if (!WBC_ERROR_IS_OK(wbc_status)) {
+        return wbc_status;
+    }
+
+    ret = sss_nss_getidbysid(sid_str, &id, &type);
+    wbcFreeMemory(sid_str);
+    if (ret != 0) {
+        return WBC_ERR_UNKNOWN_FAILURE;
+    }
+
+    if (type != SSS_ID_TYPE_GID && type != SSS_ID_TYPE_BOTH) {
+        return WBC_ERR_UNKNOWN_GROUP;
+    }
+
+    *pgid = (gid_t) id;
+
+    return WBC_ERR_SUCCESS;
+}
+
+/* Convert a Unix gid to a Windows SID, allocating a SID if needed */
+wbcErr wbcGidToSid(gid_t gid, struct wbcDomainSid *sid)
+{
+    int ret;
+    char *str_sid;
+    enum sss_id_type type;
+    wbcErr wbc_status;
+
+    ret = sss_nss_getsidbyid(gid, &str_sid, &type);
+    if (ret != 0) {
+        return WBC_ERR_UNKNOWN_FAILURE;
+    }
+
+    if (type != SSS_ID_TYPE_GID && type != SSS_ID_TYPE_BOTH) {
+        free(str_sid);
+        return WBC_ERR_UNKNOWN_USER;
+    }
+
+    wbc_status = wbcStringToSid(str_sid, sid);
+    free(str_sid);
+    if (!WBC_ERROR_IS_OK(wbc_status)) {
+        return wbc_status;
+    }
+
+    return WBC_ERR_SUCCESS;
+}
+
+/* Obtain a new uid from Winbind */
+wbcErr wbcAllocateUid(uid_t *puid)
+{
+    /* Not supported by SSSD */
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+/* Obtain a new gid from Winbind */
+wbcErr wbcAllocateGid(gid_t *pgid)
+{
+    /* Not supported by SSSD */
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+/* Convert a list of SIDs */
+wbcErr wbcSidsToUnixIds(const struct wbcDomainSid *sids, uint32_t num_sids,
+            struct wbcUnixId *ids)
+{
+    int ret;
+    char *sid_str;
+    uint32_t id;
+    enum sss_id_type type;
+    size_t c;
+    wbcErr wbc_status;
+
+    for (c = 0; c < num_sids; c++) {
+        wbc_status = wbcSidToString(&sids[c], &sid_str);
+        if (!WBC_ERROR_IS_OK(wbc_status)) {
+            return wbc_status;
+        }
+
+        ret = sss_nss_getidbysid(sid_str, &id, &type);
+        wbcFreeMemory(sid_str);
+        if (ret != 0) {
+            return WBC_ERR_UNKNOWN_FAILURE;
+        }
+
+        switch (type) {
+        case SSS_ID_TYPE_UID:
+            ids[c].type = WBC_ID_TYPE_UID;
+            ids[c].id.uid = (uid_t) id;
+            break;
+        case SSS_ID_TYPE_GID:
+            ids[c].type = WBC_ID_TYPE_GID;
+            ids[c].id.gid = (gid_t) id;
+            break;
+        case SSS_ID_TYPE_BOTH:
+            ids[c].type = WBC_ID_TYPE_BOTH;
+            ids[c].id.uid = (uid_t) id;
+            break;
+        default:
+            ids[c].type = WBC_ID_TYPE_NOT_SPECIFIED;
+        }
+    }
+
+    return WBC_ERR_SUCCESS;
+}
diff --git a/src/sss_client/libwbclient/wbc_pam_sssd.c b/src/sss_client/libwbclient/wbc_pam_sssd.c
new file mode 100644
index 0000000..0bd27ce
--- /dev/null
+++ b/src/sss_client/libwbclient/wbc_pam_sssd.c
@@ -0,0 +1,151 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Winbind client API - SSSD version
+
+   Copyright (C) Sumit Bose <sbose at redhat.com> 2014
+
+   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"
+#include "wbc_sssd_internal.h"
+
+/* Authenticate a username/password pair */
+wbcErr wbcAuthenticateUser(const char *username,
+               const char *password)
+{
+    wbcErr wbc_status = WBC_ERR_SUCCESS;
+    struct wbcAuthUserParams params;
+
+    memset(&params, 0, sizeof(params));
+
+    params.account_name       = username;
+    params.level              = WBC_AUTH_USER_LEVEL_PLAIN;
+    params.password.plaintext = password;
+
+    wbc_status = wbcAuthenticateUserEx(&params, NULL, NULL);
+
+    return wbc_status;
+}
+
+
+/* Authenticate with more detailed information */
+wbcErr wbcAuthenticateUserEx(const struct wbcAuthUserParams *params,
+                 struct wbcAuthUserInfo **info,
+                 struct wbcAuthErrorInfo **error)
+{
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+/* Trigger a verification of the trust credentials of a specific domain */
+wbcErr wbcCheckTrustCredentials(const char *domain,
+                struct wbcAuthErrorInfo **error)
+{
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+/* Trigger a change of the trust credentials for a specific domain */
+wbcErr wbcChangeTrustCredentials(const char *domain,
+                 struct wbcAuthErrorInfo **error)
+{
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+/*
+ * Trigger a no-op NETLOGON call. Lightweight version of
+ * wbcCheckTrustCredentials
+ */
+wbcErr wbcPingDc(const char *domain, struct wbcAuthErrorInfo **error)
+{
+    return wbcPingDc2(domain, error, NULL);
+}
+
+/*
+ * Trigger a no-op NETLOGON call. Lightweight version of
+ * wbcCheckTrustCredentials, optionally return attempted DC
+ */
+wbcErr wbcPingDc2(const char *domain, struct wbcAuthErrorInfo **error,
+          char **dcname)
+{
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+/* Trigger an extended logoff notification to Winbind for a specific user */
+wbcErr wbcLogoffUserEx(const struct wbcLogoffUserParams *params,
+               struct wbcAuthErrorInfo **error)
+{
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+/* Trigger a logoff notification to Winbind for a specific user */
+wbcErr wbcLogoffUser(const char *username,
+             uid_t uid,
+             const char *ccfilename)
+{
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+/* Change a password for a user with more detailed information upon failure */
+wbcErr wbcChangeUserPasswordEx(const struct wbcChangePasswordParams *params,
+                   struct wbcAuthErrorInfo **error,
+                   enum wbcPasswordChangeRejectReason *reject_reason,
+                   struct wbcUserPasswordPolicyInfo **policy)
+{
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+/* Change a password for a user */
+wbcErr wbcChangeUserPassword(const char *username,
+                 const char *old_password,
+                 const char *new_password)
+{
+    wbcErr wbc_status = WBC_ERR_SUCCESS;
+    struct wbcChangePasswordParams params;
+
+    memset(&params, 0, sizeof(params));
+
+    params.account_name        = username;
+    params.level            = WBC_CHANGE_PASSWORD_LEVEL_PLAIN;
+    params.old_password.plaintext    = old_password;
+    params.new_password.plaintext    = new_password;
+
+    wbc_status = wbcChangeUserPasswordEx(&params, NULL, NULL, NULL);
+
+    return wbc_status;
+}
+
+/* Logon a User */
+wbcErr wbcLogonUser(const struct wbcLogonUserParams *params,
+            struct wbcLogonUserInfo **info,
+            struct wbcAuthErrorInfo **error,
+            struct wbcUserPasswordPolicyInfo **policy)
+{
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+/* Authenticate a user with cached credentials */
+wbcErr wbcCredentialCache(struct wbcCredentialCacheParams *params,
+                          struct wbcCredentialCacheInfo **info,
+                          struct wbcAuthErrorInfo **error)
+{
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+/* Authenticate a user with cached credentials */
+wbcErr wbcCredentialSave(const char *user, const char *password)
+{
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
diff --git a/src/sss_client/libwbclient/wbc_pwd_sssd.c b/src/sss_client/libwbclient/wbc_pwd_sssd.c
new file mode 100644
index 0000000..8f4f375
--- /dev/null
+++ b/src/sss_client/libwbclient/wbc_pwd_sssd.c
@@ -0,0 +1,659 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Winbind client API - SSSD version
+
+   Copyright (C) Sumit Bose <sbose at redhat.com> 2014
+
+   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 <nss.h>
+#include <dlfcn.h>
+#include <errno.h>
+
+#include "libwbclient.h"
+#include "wbc_sssd_internal.h"
+
+#define DEFAULT_BUFSIZE 4096
+#define MAX_BUFSIZE (1024*1204)
+
+struct nss_ops_ctx {
+    void *dl_handle;
+
+    enum nss_status (*getpwnam_r)(const char *name, struct passwd *result,
+                      char *buffer, size_t buflen, int *errnop);
+    enum nss_status (*getpwuid_r)(uid_t uid, struct passwd *result,
+                      char *buffer, size_t buflen, int *errnop);
+    enum nss_status (*setpwent)(void);
+    enum nss_status (*getpwent_r)(struct passwd *result,
+                      char *buffer, size_t buflen, int *errnop);
+    enum nss_status (*endpwent)(void);
+
+    enum nss_status (*getgrnam_r)(const char *name, struct group *result,
+                      char *buffer, size_t buflen, int *errnop);
+    enum nss_status (*getgrgid_r)(gid_t gid, struct group *result,
+                      char *buffer, size_t buflen, int *errnop);
+    enum nss_status (*setgrent)(void);
+    enum nss_status (*getgrent_r)(struct group *result,
+                      char *buffer, size_t buflen, int *errnop);
+    enum nss_status (*endgrent)(void);
+
+    enum nss_status (*initgroups_dyn)(const char *user, gid_t group,
+                          long int *start, long int *size,
+                          gid_t **groups, long int limit,
+                          int *errnop);
+};
+
+struct nss_ops_ctx *ctx = NULL;
+
+static bool open_libnss_sss(void)
+{
+    ctx = calloc(1, sizeof(struct nss_ops_ctx));
+    if (ctx == NULL) {
+        return false;
+    }
+
+    ctx->dl_handle = dlopen("libnss_sss.so.2", RTLD_NOW);
+    if (ctx->dl_handle == NULL) {
+        goto fail;
+    }
+
+    ctx->getpwnam_r = dlsym(ctx->dl_handle, "_nss_sss_getpwnam_r");
+    if (ctx->getpwnam_r == NULL) {
+        goto fail;
+    }
+
+    ctx->getpwuid_r = dlsym(ctx->dl_handle, "_nss_sss_getpwuid_r");
+    if (ctx->getpwuid_r == NULL) {
+        goto fail;
+    }
+
+    ctx->setpwent = dlsym(ctx->dl_handle, "_nss_sss_setpwent");
+    if (ctx->setpwent == NULL) {
+        goto fail;
+    }
+
+    ctx->getpwent_r = dlsym(ctx->dl_handle, "_nss_sss_getpwent_r");
+    if (ctx->getpwent_r == NULL) {
+        goto fail;
+    }
+
+    ctx->endpwent = dlsym(ctx->dl_handle, "_nss_sss_endpwent");
+    if (ctx->endpwent == NULL) {
+        goto fail;
+    }
+
+    ctx->getgrnam_r = dlsym(ctx->dl_handle, "_nss_sss_getgrnam_r");
+    if (ctx->getgrnam_r == NULL) {
+        goto fail;
+    }
+
+    ctx->getgrgid_r = dlsym(ctx->dl_handle, "_nss_sss_getgrgid_r");
+    if (ctx->getgrgid_r == NULL) {
+        goto fail;
+    }
+
+    ctx->setgrent = dlsym(ctx->dl_handle, "_nss_sss_setgrent");
+    if (ctx->setgrent == NULL) {
+        goto fail;
+    }
+
+    ctx->getgrent_r = dlsym(ctx->dl_handle, "_nss_sss_getgrent_r");
+    if (ctx->getgrent_r == NULL) {
+        goto fail;
+    }
+
+    ctx->endgrent = dlsym(ctx->dl_handle, "_nss_sss_endgrent");
+    if (ctx->endgrent == NULL) {
+        goto fail;
+    }
+
+    ctx->initgroups_dyn = dlsym(ctx->dl_handle, "_nss_sss_initgroups_dyn");
+    if (ctx->initgroups_dyn == NULL) {
+        goto fail;
+    }
+
+    return true;
+
+fail:
+    if (ctx->dl_handle != NULL) {
+        dlclose(ctx->dl_handle);
+    }
+
+    free(ctx);
+    ctx = NULL;
+
+    return false;
+}
+
+static void wbcPasswdDestructor(void *ptr)
+{
+    struct passwd *pw = (struct passwd *)ptr;
+    free(pw->pw_name);
+    free(pw->pw_passwd);
+    free(pw->pw_gecos);
+    free(pw->pw_shell);
+    free(pw->pw_dir);
+}
+
+static wbcErr copy_pwd(struct passwd *in, struct passwd **out)
+{
+    struct passwd *pw;
+
+    pw = (struct passwd *)wbcAllocateMemory(1, sizeof(struct passwd),
+                          wbcPasswdDestructor);
+    if (pw == NULL) {
+        return WBC_ERR_NO_MEMORY;
+    }
+
+    pw->pw_name = strdup(in->pw_name);
+    if (pw->pw_name == NULL) {
+        goto fail;
+    }
+
+    pw->pw_passwd = strdup(in->pw_passwd);
+    if (pw->pw_passwd == NULL) {
+        goto fail;
+    }
+
+    pw->pw_uid = in->pw_uid;
+    pw->pw_gid = in->pw_gid;
+
+    pw->pw_gecos = strdup(in->pw_gecos);
+    if (pw->pw_gecos == NULL) {
+        goto fail;
+    }
+
+    pw->pw_shell = strdup(in->pw_shell);
+    if (pw->pw_shell == NULL) {
+        goto fail;
+    }
+
+    pw->pw_dir = strdup(in->pw_dir);
+    if (pw->pw_dir == NULL) {
+        goto fail;
+    }
+
+    *out = pw;
+    return WBC_ERR_SUCCESS;
+fail:
+    wbcFreeMemory(pw);
+
+    return WBC_ERR_NO_MEMORY;
+}
+
+static wbcErr nss_to_wbc(enum nss_status status)
+{
+    wbcErr wbc_status;
+
+    switch (status) {
+    case NSS_STATUS_SUCCESS:
+        wbc_status = WBC_ERR_SUCCESS;
+        break;
+    case NSS_STATUS_NOTFOUND:
+        wbc_status = WBC_ERR_UNKNOWN_USER;
+        break;
+    default:
+        wbc_status = WBC_ERR_UNKNOWN_FAILURE;
+    }
+
+    return wbc_status;
+}
+
+/* Fill in a struct passwd* for a domain user based on username */
+wbcErr wbcGetpwnam(const char *name, struct passwd **pwd)
+{
+    struct passwd lpwd = {0};
+    enum nss_status status;
+    char *buffer = NULL;
+    size_t buflen;
+    wbcErr wbc_status;
+    int nss_errno;
+
+    if (ctx == NULL && !open_libnss_sss()) {
+        return WBC_ERR_NSS_ERROR;
+    }
+
+    if (name == NULL || pwd == NULL) {
+        return WBC_ERR_INVALID_PARAM;
+    }
+
+    buflen = DEFAULT_BUFSIZE;
+    buffer = malloc(buflen);
+    if (buffer == NULL) {
+        return WBC_ERR_NO_MEMORY;
+    }
+
+    status = ctx->getpwnam_r(name, &lpwd, buffer, buflen, &nss_errno);
+    wbc_status = nss_to_wbc(status);
+    if (WBC_ERROR_IS_OK(wbc_status)) {
+        wbc_status = copy_pwd(&lpwd, pwd);
+    }
+
+    free(buffer);
+
+    return wbc_status;
+}
+
+/* Fill in a struct passwd* for a domain user based on uid */
+wbcErr wbcGetpwuid(uid_t uid, struct passwd **pwd)
+{
+    struct passwd lpwd = {0};
+    enum nss_status status;
+    char *buffer = NULL;
+    size_t buflen;
+    wbcErr wbc_status;
+    int nss_errno;
+
+    if (ctx == NULL && !open_libnss_sss()) {
+        return WBC_ERR_NSS_ERROR;
+    }
+
+    if (pwd == NULL) {
+        return WBC_ERR_INVALID_PARAM;
+    }
+
+    buflen = DEFAULT_BUFSIZE;
+    buffer = malloc(buflen);
+    if (buffer == NULL) {
+        return WBC_ERR_NO_MEMORY;
+    }
+
+    status = ctx->getpwuid_r(uid, &lpwd, buffer, buflen, &nss_errno);
+    wbc_status = nss_to_wbc(status);
+    if (WBC_ERROR_IS_OK(wbc_status)) {
+        wbc_status = copy_pwd(&lpwd, pwd);
+    }
+
+    free(buffer);
+
+    return wbc_status;
+}
+
+/* Fill in a struct passwd* for a domain user based on sid */
+wbcErr wbcGetpwsid(struct wbcDomainSid *sid, struct passwd **pwd)
+{
+    wbcErr wbc_status;
+    uid_t uid;
+
+    wbc_status = wbcSidToUid(sid, &uid);
+    if (!WBC_ERROR_IS_OK(wbc_status)) {
+        return wbc_status;
+    }
+
+    wbc_status = wbcGetpwuid(uid, pwd);
+
+    return wbc_status;
+
+}
+
+static void wbcGroupDestructor(void *ptr)
+{
+    struct group *gr = (struct group *)ptr;
+    size_t c;
+
+    free(gr->gr_name);
+    free(gr->gr_passwd);
+
+    /* if the array was partly created this can be NULL */
+    if (gr->gr_mem == NULL) {
+        return;
+    }
+
+    for (c=0; gr->gr_mem[c] != NULL; c++) {
+        free(gr->gr_mem[c]);
+    }
+    free(gr->gr_mem);
+}
+
+static wbcErr copy_grp(struct group *in, struct group **out)
+{
+    struct group *gr;
+    size_t members;
+    size_t c;
+
+    gr = (struct group *)wbcAllocateMemory(1, sizeof(struct group),
+                          wbcGroupDestructor);
+    if (gr == NULL) {
+        return WBC_ERR_NO_MEMORY;
+    }
+
+    gr->gr_name = strdup(in->gr_name);
+    if (gr->gr_name == NULL) {
+        goto fail;
+    }
+
+    gr->gr_passwd = strdup(in->gr_passwd);
+    if (gr->gr_passwd == NULL) {
+        goto fail;
+    }
+
+    gr->gr_gid = in->gr_gid;
+
+    for (members = 0; in->gr_mem[members] != NULL; members++);
+
+    if (members > 0) {
+        gr->gr_mem = (char **)calloc(members+1, sizeof(char *));
+        if (gr->gr_mem == NULL) {
+            goto fail;
+        }
+
+        for (c = 0; c < members; c++) {
+            gr->gr_mem[c] = strdup(in->gr_mem[c]);
+            if (gr->gr_mem[c] == NULL) {
+                goto fail;
+            }
+        }
+    }
+
+    *out = gr;
+    return WBC_ERR_SUCCESS;
+fail:
+    wbcFreeMemory(gr);
+
+    return WBC_ERR_NO_MEMORY;
+}
+/* Fill in a struct passwd* for a domain user based on username */
+wbcErr wbcGetgrnam(const char *name, struct group **grp)
+{
+    struct group lgrp;
+    enum nss_status status;
+    char *newbuffer = NULL;
+    char *buffer = NULL;
+    size_t buflen = 0;
+    wbcErr wbc_status;
+    int nss_errno;
+
+    if (ctx == NULL && !open_libnss_sss()) {
+        return WBC_ERR_NSS_ERROR;
+    }
+
+    if (name == NULL || grp == NULL) {
+        return WBC_ERR_INVALID_PARAM;
+    }
+
+    do {
+        if (buflen == 0) {
+            buflen = DEFAULT_BUFSIZE;
+        } else {
+            buflen *= 2;
+        }
+        newbuffer = realloc(buffer, buflen);
+        if (newbuffer == NULL) {
+            free(buffer);
+            return WBC_ERR_NO_MEMORY;
+        }
+        buffer = newbuffer;
+
+        memset(grp, 0, sizeof(struct group));
+        status = ctx->getgrnam_r(name, &lgrp, buffer, buflen, &nss_errno);
+        wbc_status = nss_to_wbc(status);
+        if (WBC_ERROR_IS_OK(wbc_status)) {
+            wbc_status = copy_grp(&lgrp, grp);
+        }
+    } while (status == NSS_STATUS_TRYAGAIN && nss_errno == ERANGE \
+         && buflen < MAX_BUFSIZE);
+
+    free(buffer);
+
+    return wbc_status;
+}
+
+/* Fill in a struct passwd* for a domain user based on uid */
+wbcErr wbcGetgrgid(gid_t gid, struct group **grp)
+{
+    struct group lgrp;
+    enum nss_status status;
+    char *newbuffer = NULL;
+    char *buffer = NULL;
+    size_t buflen = 0;
+    wbcErr wbc_status;
+    int nss_errno;
+
+    if (ctx == NULL && !open_libnss_sss()) {
+        return WBC_ERR_NSS_ERROR;
+    }
+
+    if (grp == NULL) {
+        return WBC_ERR_INVALID_PARAM;
+    }
+
+    do {
+        if (buflen == 0) {
+            buflen = DEFAULT_BUFSIZE;
+        } else {
+            buflen *= 2;
+        }
+        newbuffer = realloc(buffer, buflen);
+        if (newbuffer == NULL) {
+            free(buffer);
+            return WBC_ERR_NO_MEMORY;
+        }
+        buffer = newbuffer;
+
+        memset(grp, 0, sizeof(struct group));
+        status = ctx->getgrgid_r(gid, &lgrp, buffer, buflen, &nss_errno);
+        wbc_status = nss_to_wbc(status);
+        if (WBC_ERROR_IS_OK(wbc_status)) {
+            wbc_status = copy_grp(&lgrp, grp);
+        }
+    } while (status == NSS_STATUS_TRYAGAIN && nss_errno == ERANGE \
+         && buflen < MAX_BUFSIZE);
+
+    free(buffer);
+
+    return wbc_status;
+}
+
+/* Reset the passwd iterator */
+wbcErr wbcSetpwent(void)
+{
+    enum nss_status status;
+    wbcErr wbc_status;
+
+    if (ctx == NULL && !open_libnss_sss()) {
+        return WBC_ERR_NSS_ERROR;
+    }
+
+    status = ctx->setpwent();
+    wbc_status = nss_to_wbc(status);
+
+    return wbc_status;
+}
+
+/* Close the passwd iterator */
+wbcErr wbcEndpwent(void)
+{
+    enum nss_status status;
+    wbcErr wbc_status;
+
+    if (ctx == NULL && !open_libnss_sss()) {
+        return WBC_ERR_NSS_ERROR;
+    }
+
+    status = ctx->endpwent();
+    wbc_status = nss_to_wbc(status);
+
+    return wbc_status;
+}
+
+/* Return the next struct passwd* entry from the pwent iterator */
+wbcErr wbcGetpwent(struct passwd **pwd)
+{
+    struct passwd lpwd = {0};
+    enum nss_status status;
+    char *buffer = NULL;
+    size_t buflen;
+    wbcErr wbc_status;
+    int nss_errno;
+
+    if (ctx == NULL && !open_libnss_sss()) {
+        return WBC_ERR_NSS_ERROR;
+    }
+
+    if (pwd == NULL) {
+        return WBC_ERR_INVALID_PARAM;
+    }
+
+    buflen = DEFAULT_BUFSIZE;
+    buffer = malloc(buflen);
+    if (buffer == NULL) {
+        return WBC_ERR_NO_MEMORY;
+    }
+
+    status = ctx->getpwent_r(&lpwd, buffer, buflen, &nss_errno);
+    wbc_status = nss_to_wbc(status);
+    if (WBC_ERROR_IS_OK(wbc_status)) {
+        wbc_status = copy_pwd(&lpwd, pwd);
+    }
+
+    free(buffer);
+
+    return wbc_status;
+}
+
+/* Reset the group iterator */
+wbcErr wbcSetgrent(void)
+{
+    enum nss_status status;
+    wbcErr wbc_status;
+
+    if (ctx == NULL && !open_libnss_sss()) {
+        return WBC_ERR_NSS_ERROR;
+    }
+
+    status = ctx->setgrent();
+    wbc_status = nss_to_wbc(status);
+
+    return wbc_status;
+}
+
+/* Close the group iterator */
+wbcErr wbcEndgrent(void)
+{
+    enum nss_status status;
+    wbcErr wbc_status;
+
+    if (ctx == NULL && !open_libnss_sss()) {
+        return WBC_ERR_NSS_ERROR;
+    }
+
+    status = ctx->endgrent();
+    wbc_status = nss_to_wbc(status);
+
+    return wbc_status;
+}
+
+/* Return the next struct group* entry from the pwent iterator */
+wbcErr wbcGetgrent(struct group **grp)
+{
+    struct group lgrp;
+    enum nss_status status;
+    char *newbuffer = NULL;
+    char *buffer = NULL;
+    size_t buflen = 0;
+    wbcErr wbc_status;
+    int nss_errno;
+
+    if (ctx == NULL && !open_libnss_sss()) {
+        return WBC_ERR_NSS_ERROR;
+    }
+
+    if (grp == NULL) {
+        return WBC_ERR_INVALID_PARAM;
+    }
+
+    do {
+        if (buflen == 0) {
+            buflen = DEFAULT_BUFSIZE;
+        } else {
+            buflen *= 2;
+        }
+        newbuffer = realloc(buffer, buflen);
+        if (newbuffer == NULL) {
+            free(buffer);
+            return WBC_ERR_NO_MEMORY;
+        }
+        buffer = newbuffer;
+
+        memset(grp, 0, sizeof(struct group));
+        status = ctx->getgrent_r(&lgrp, buffer, buflen, &nss_errno);
+        wbc_status = nss_to_wbc(status);
+        if (WBC_ERROR_IS_OK(wbc_status)) {
+            wbc_status = copy_grp(&lgrp, grp);
+        }
+    } while (status == NSS_STATUS_TRYAGAIN && nss_errno == ERANGE \
+         && buflen < MAX_BUFSIZE);
+
+    free(buffer);
+
+    return wbc_status;
+}
+
+/* Return the next struct group* entry from the pwent iterator */
+wbcErr wbcGetgrlist(struct group **grp)
+{
+    /* Not used anywhere */
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+/* Return the unix group array belonging to the given user */
+wbcErr wbcGetGroups(const char *account,
+            uint32_t *num_groups,
+            gid_t **_groups)
+{
+    wbcErr wbc_status;
+    enum nss_status status;
+    struct passwd *pwd;
+    long int gr_size = 0;
+    long int start = 0;
+    gid_t *gids = NULL;
+    int nss_errno;
+
+    wbc_status = wbcGetpwnam(account, &pwd);
+    if (!WBC_ERROR_IS_OK(wbc_status)) {
+        return wbc_status;
+    }
+
+    gr_size = DEFAULT_BUFSIZE;
+    gids = calloc(gr_size, sizeof(gid_t));
+    if (gids == NULL) {
+        wbc_status = WBC_ERR_NO_MEMORY;
+        goto done;
+    }
+
+    /* nss modules may skip the primary group when we pass it in so always
+     * add it in advance */
+    gids[0] = pwd->pw_gid;
+    start++;
+
+    status = ctx->initgroups_dyn(pwd->pw_name, pwd->pw_gid, &start,
+                     &gr_size, &gids, -1, &nss_errno);
+    wbc_status = nss_to_wbc(status);
+    if (!WBC_ERROR_IS_OK(wbc_status)) {
+        goto done;
+    }
+
+    *_groups = gids;
+    *num_groups = start;
+
+    wbc_status = WBC_ERR_SUCCESS;
+
+done:
+    wbcFreeMemory(pwd);
+
+    return wbc_status;
+}
diff --git a/src/sss_client/libwbclient/wbc_sid_common.c b/src/sss_client/libwbclient/wbc_sid_common.c
new file mode 100644
index 0000000..60ddbdd
--- /dev/null
+++ b/src/sss_client/libwbclient/wbc_sid_common.c
@@ -0,0 +1,199 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Winbind client API
+
+   Copyright (C) Gerald (Jerry) Carter 2007
+   Copyright (C) Volker Lendecke 2010
+
+
+   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 <stdio.h>
+
+#include "libwbclient.h"
+
+#define MAX(a, b) (((a) > (b)) ? (a) : (b))
+
+/* Convert a sid to a string into a buffer. Return the string
+ * length. If buflen is too small, return the string length that would
+ * result if it was long enough. */
+int wbcSidToStringBuf(const struct wbcDomainSid *sid, char *buf, int buflen)
+{
+    uint64_t id_auth;
+    int i, ofs;
+
+    if (!sid) {
+        strncpy(buf, "(NULL SID)", buflen);
+        buf[buflen < 10 ? buflen :10] = '\0';
+        return 10;    /* strlen("(NULL SID)") */
+    }
+
+    id_auth = (uint64_t)sid->id_auth[5] +
+        ((uint64_t)sid->id_auth[4] << 8) +
+        ((uint64_t)sid->id_auth[3] << 16) +
+        ((uint64_t)sid->id_auth[2] << 24) +
+        ((uint64_t)sid->id_auth[1] << 32) +
+        ((uint64_t)sid->id_auth[0] << 40);
+
+    ofs = snprintf(buf, buflen, "S-%hhu-", (unsigned char)sid->sid_rev_num);
+    if (id_auth >= UINT32_MAX) {
+        ofs += snprintf(buf + ofs, MAX(buflen - ofs, 0), "0x%llx",
+                (unsigned long long)id_auth);
+    } else {
+        ofs += snprintf(buf + ofs, MAX(buflen - ofs, 0), "%llu",
+                (unsigned long long)id_auth);
+    }
+
+    for (i = 0; i < sid->num_auths; i++) {
+        ofs += snprintf(buf + ofs, MAX(buflen - ofs, 0), "-%u",
+                (unsigned int)sid->sub_auths[i]);
+    }
+    return ofs;
+}
+
+/* Convert a binary SID to a character string */
+wbcErr wbcSidToString(const struct wbcDomainSid *sid,
+              char **sid_string)
+{
+    char buf[WBC_SID_STRING_BUFLEN];
+    char *result;
+    int len;
+
+    if (!sid) {
+        return WBC_ERR_INVALID_SID;
+    }
+
+    len = wbcSidToStringBuf(sid, buf, sizeof(buf));
+
+    if (len+1 > sizeof(buf)) {
+        return WBC_ERR_INVALID_SID;
+    }
+
+    result = (char *)wbcAllocateMemory(len+1, 1, NULL);
+    if (result == NULL) {
+        return WBC_ERR_NO_MEMORY;
+    }
+    memcpy(result, buf, len+1);
+
+    *sid_string = result;
+    return WBC_ERR_SUCCESS;
+}
+
+#define AUTHORITY_MASK    (~(0xffffffffffffULL))
+
+/* Convert a character string to a binary SID */
+wbcErr wbcStringToSid(const char *str,
+              struct wbcDomainSid *sid)
+{
+    const char *p;
+    char *q;
+    uint64_t x;
+    wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
+
+    if (!sid) {
+        wbc_status = WBC_ERR_INVALID_PARAM;
+        BAIL_ON_WBC_ERROR(wbc_status);
+    }
+
+    /* Sanity check for either "S-" or "s-" */
+
+    if (!str
+        || (str[0]!='S' && str[0]!='s')
+        || (str[1]!='-'))
+    {
+        wbc_status = WBC_ERR_INVALID_PARAM;
+        BAIL_ON_WBC_ERROR(wbc_status);
+    }
+
+    /* Get the SID revision number */
+
+    p = str+2;
+    x = (uint64_t)strtoul(p, &q, 10);
+    if (x==0 || x > UINT8_MAX || !q || *q!='-') {
+        wbc_status = WBC_ERR_INVALID_SID;
+        BAIL_ON_WBC_ERROR(wbc_status);
+    }
+    sid->sid_rev_num = (uint8_t)x;
+
+    /*
+     * Next the Identifier Authority.  This is stored big-endian in a
+     * 6 byte array. If the authority value is >= UINT_MAX, then it should
+     * be expressed as a hex value, according to MS-DTYP.
+     */
+    p = q+1;
+    x = strtoull(p, &q, 0);
+    if (!q || *q!='-' || (x & AUTHORITY_MASK)) {
+        wbc_status = WBC_ERR_INVALID_SID;
+        BAIL_ON_WBC_ERROR(wbc_status);
+    }
+    sid->id_auth[5] = (x & 0x0000000000ffULL);
+    sid->id_auth[4] = (x & 0x00000000ff00ULL) >> 8;
+    sid->id_auth[3] = (x & 0x000000ff0000ULL) >> 16;
+    sid->id_auth[2] = (x & 0x0000ff000000ULL) >> 24;
+    sid->id_auth[1] = (x & 0x00ff00000000ULL) >> 32;
+    sid->id_auth[0] = (x & 0xff0000000000ULL) >> 40;
+
+    /* now read the the subauthorities */
+    p = q +1;
+    sid->num_auths = 0;
+    while (sid->num_auths < WBC_MAXSUBAUTHS) {
+        x = strtoull(p, &q, 10);
+        if (p == q)
+            break;
+        if (x > UINT32_MAX) {
+            wbc_status = WBC_ERR_INVALID_SID;
+            BAIL_ON_WBC_ERROR(wbc_status);
+        }
+        sid->sub_auths[sid->num_auths++] = x;
+
+        if (*q != '-') {
+            break;
+        }
+        p = q + 1;
+    }
+
+    /* IF we ended early, then the SID could not be converted */
+
+    if (q && *q!='\0') {
+        wbc_status = WBC_ERR_INVALID_SID;
+        BAIL_ON_WBC_ERROR(wbc_status);
+    }
+
+    wbc_status = WBC_ERR_SUCCESS;
+
+done:
+    return wbc_status;
+
+}
+
+const char* wbcSidTypeString(enum wbcSidType type)
+{
+    switch (type) {
+    case WBC_SID_NAME_USE_NONE: return "SID_NONE";
+    case WBC_SID_NAME_USER:     return "SID_USER";
+    case WBC_SID_NAME_DOM_GRP:  return "SID_DOM_GROUP";
+    case WBC_SID_NAME_DOMAIN:   return "SID_DOMAIN";
+    case WBC_SID_NAME_ALIAS:    return "SID_ALIAS";
+    case WBC_SID_NAME_WKN_GRP:  return "SID_WKN_GROUP";
+    case WBC_SID_NAME_DELETED:  return "SID_DELETED";
+    case WBC_SID_NAME_INVALID:  return "SID_INVALID";
+    case WBC_SID_NAME_UNKNOWN:  return "SID_UNKNOWN";
+    case WBC_SID_NAME_COMPUTER: return "SID_COMPUTER";
+    default:                    return "Unknown type";
+    }
+}
diff --git a/src/sss_client/libwbclient/wbc_sid_sssd.c b/src/sss_client/libwbclient/wbc_sid_sssd.c
new file mode 100644
index 0000000..699e1d3
--- /dev/null
+++ b/src/sss_client/libwbclient/wbc_sid_sssd.c
@@ -0,0 +1,276 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Winbind client API - SSSD version
+
+   Copyright (C) Sumit Bose <sbose at redhat.com> 2014
+
+   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 */
+#define _GNU_SOURCE  /* for asprintf */
+#include <stdio.h>
+
+#include <errno.h>
+
+#include <sss_nss_idmap.h>
+
+#include "libwbclient.h"
+#include "wbc_sssd_internal.h"
+
+static int sss_id_type_to_wbcSidType(enum sss_id_type sss_type,
+                                     enum wbcSidType *name_type)
+{
+    switch (sss_type) {
+    case SSS_ID_TYPE_NOT_SPECIFIED:
+        *name_type = WBC_SID_NAME_USE_NONE;
+        break;
+    case SSS_ID_TYPE_UID:
+    case SSS_ID_TYPE_BOTH:
+        *name_type = WBC_SID_NAME_USER;
+        break;
+    case SSS_ID_TYPE_GID:
+        *name_type = WBC_SID_NAME_DOM_GRP;
+        break;
+    default:
+        return EINVAL;
+    }
+
+    return 0;
+};
+
+/* Convert a domain and name to SID */
+wbcErr wbcLookupName(const char *domain,
+             const char *name,
+             struct wbcDomainSid *sid,
+             enum wbcSidType *name_type)
+{
+    char *fq_name = NULL;
+    char *str_sid;
+    enum sss_id_type type;
+    int ret;
+    wbcErr wbc_status;
+
+    ret = asprintf(&fq_name, "%s@%s", name, domain);
+    if (ret == -1) {
+        return WBC_ERR_NO_MEMORY;
+    }
+
+    ret = sss_nss_getsidbyname(fq_name, &str_sid, &type);
+    free(fq_name);
+    if (ret != 0) {
+        return WBC_ERR_UNKNOWN_FAILURE;
+    }
+
+    ret = sss_id_type_to_wbcSidType(type, name_type);
+    if (ret != 0) {
+        return WBC_ERR_UNKNOWN_FAILURE;
+    }
+
+    wbc_status = wbcStringToSid(str_sid, sid);
+    free(str_sid);
+    if (!WBC_ERROR_IS_OK(wbc_status)) {
+        return wbc_status;
+    }
+
+    return WBC_ERR_SUCCESS;
+}
+
+
+/* Convert a SID to a domain and name */
+wbcErr wbcLookupSid(const struct wbcDomainSid *sid,
+            char **pdomain,
+            char **pname,
+            enum wbcSidType *pname_type)
+{
+    char *str_sid;
+    char *fq_name = NULL;
+    enum sss_id_type type;
+    int ret;
+    char *p;
+    wbcErr wbc_status;
+
+    wbc_status = wbcSidToString(sid, &str_sid);
+    if (!WBC_ERROR_IS_OK(wbc_status)) {
+        return wbc_status;
+    }
+
+    ret = sss_nss_getnamebysid(str_sid, &fq_name, &type);
+    wbcFreeMemory(str_sid);
+    if (ret != 0) {
+        return WBC_ERR_UNKNOWN_FAILURE;
+    }
+
+    ret = sss_id_type_to_wbcSidType(type, pname_type);
+    if (ret != 0) {
+        wbc_status = WBC_ERR_UNKNOWN_FAILURE;
+        goto done;
+    }
+
+    /* TODO: it would be nice to have a sss_nss_getnamebysid() call which
+    * return name and domain separately. */
+    p = strchr(fq_name, '@');
+    if (p == NULL) {
+        wbc_status = WBC_ERR_UNKNOWN_FAILURE;
+        goto done;
+    }
+
+    *p = '\0';
+    *pname = wbcStrDup(fq_name);
+    if (*pname == NULL) {
+        wbc_status = WBC_ERR_NO_MEMORY;
+        goto done;
+    }
+
+    *pdomain = wbcStrDup(p + 1);
+    if (*pdomain == NULL) {
+        wbc_status = WBC_ERR_NO_MEMORY;
+        goto done;
+    }
+
+    wbc_status = WBC_ERR_SUCCESS;
+done:
+    free(fq_name);
+    return wbc_status;
+}
+
+wbcErr wbcLookupSids(const struct wbcDomainSid *sids, int num_sids,
+             struct wbcDomainInfo **pdomains, int *pnum_domains,
+             struct wbcTranslatedName **pnames)
+{
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+/* Translate a collection of RIDs within a domain to names */
+
+wbcErr wbcLookupRids(struct wbcDomainSid *dom_sid,
+             int num_rids,
+             uint32_t *rids,
+             const char **pp_domain_name,
+             const char ***pnames,
+             enum wbcSidType **ptypes)
+{
+    struct wbcDomainSid obj_sid;
+    size_t c;
+    wbcErr err;
+    char *domain;
+    char *name;
+    enum wbcSidType type;
+    const char **names = NULL;
+    enum wbcSidType *types = NULL;
+
+    memset(&obj_sid, 0, sizeof(obj_sid));
+
+    obj_sid.sid_rev_num = dom_sid->sid_rev_num;
+    obj_sid.num_auths = dom_sid->num_auths + 1;
+    for (c = 0; c < 6; c++) {
+        obj_sid.id_auth[c] = dom_sid->id_auth[c];
+    }
+    for (c = 0; c < WBC_MAXSUBAUTHS; c++) {
+        obj_sid.sub_auths[c] = dom_sid->sub_auths[c];
+    }
+
+    names = wbcAllocateStringArray(num_rids + 1);
+    if (names == NULL) {
+        err = WBC_ERR_NO_MEMORY;
+        goto done;
+    }
+
+    types = wbcAllocateMemory(num_rids + 1, sizeof(enum wbcSidType), NULL);
+    if (types == NULL) {
+        err = WBC_ERR_NO_MEMORY;
+        goto done;
+    }
+
+    for (c = 0; c < num_rids; c++) {
+        obj_sid.sub_auths[obj_sid.num_auths - 1] = rids[c];
+
+        err = wbcLookupSid(&obj_sid, &domain, &name, &type);
+        if (err != WBC_ERR_SUCCESS) {
+            goto done;
+        }
+
+        names[c] = strdup(name);
+        wbcFreeMemory(name);
+        if (names[c] == NULL) {
+            err = WBC_ERR_NO_MEMORY;
+            goto done;
+        }
+        types[c] = type;
+
+        if (c == 0) {
+            *pp_domain_name = domain;
+        } else {
+            wbcFreeMemory(domain);
+        }
+    }
+
+    *pnames = names;
+    *ptypes = types;
+
+    err = WBC_ERR_SUCCESS;
+
+done:
+    if (err != WBC_ERR_SUCCESS) {
+        wbcFreeMemory(types);
+        wbcFreeMemory(names);
+    }
+
+    return err;
+}
+
+/* Get the groups a user belongs to */
+wbcErr wbcLookupUserSids(const struct wbcDomainSid *user_sid,
+             bool domain_groups_only,
+             uint32_t *num_sids,
+             struct wbcDomainSid **_sids)
+{
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+/* Get alias membership for sids */
+wbcErr wbcGetSidAliases(const struct wbcDomainSid *dom_sid,
+            struct wbcDomainSid *sids,
+            uint32_t num_sids,
+            uint32_t **alias_rids,
+            uint32_t *num_alias_rids)
+{
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+
+/* Lists Users */
+wbcErr wbcListUsers(const char *domain_name,
+            uint32_t *_num_users,
+            const char ***_users)
+{
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+/* Lists Groups */
+wbcErr wbcListGroups(const char *domain_name,
+             uint32_t *_num_groups,
+             const char ***_groups)
+{
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+wbcErr wbcGetDisplayName(const struct wbcDomainSid *sid,
+             char **pdomain,
+             char **pfullname,
+             enum wbcSidType *pname_type)
+{
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
diff --git a/src/sss_client/libwbclient/wbc_sssd_internal.h b/src/sss_client/libwbclient/wbc_sssd_internal.h
new file mode 100644
index 0000000..e20de48
--- /dev/null
+++ b/src/sss_client/libwbclient/wbc_sssd_internal.h
@@ -0,0 +1,41 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Winbind client API - SSSD version
+
+   Copyright (C) Sumit Bose <sbose at redhat.com> 2014
+
+   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/>.
+*/
+
+#ifndef _WBC_SSSD_INTERNAL_H
+#define _WBC_SSSD_INTERNAL_H
+
+#include <syslog.h>
+
+#include "libwbclient.h"
+
+#if defined(DEVELOPER)
+#define WBC_SSSD_DEV_LOG syslog(LOG_DEBUG, "libwbclient_sssd: %s", __FUNCTION__);
+#else
+#define WBC_SSSD_DEV_LOG
+#endif
+
+#define WBC_SSSD_NOT_IMPLEMENTED \
+    do { \
+        WBC_SSSD_DEV_LOG; \
+        return WBC_ERR_NOT_IMPLEMENTED; \
+    } while(0)
+
+#endif    /* _WBC_SSSD_INTERNAL_H */
diff --git a/src/sss_client/libwbclient/wbc_util_common.c b/src/sss_client/libwbclient/wbc_util_common.c
new file mode 100644
index 0000000..25ff1f8
--- /dev/null
+++ b/src/sss_client/libwbclient/wbc_util_common.c
@@ -0,0 +1,97 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Winbind client asynchronous API, utility functions
+
+   Copyright (C) Gerald (Jerry) Carter 2007-2008
+
+
+   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"
+
+#include "util/util.h"
+
+static void wbcNamedBlobDestructor(void *ptr)
+{
+    struct wbcNamedBlob *b = (struct wbcNamedBlob *)ptr;
+
+    while (b->name != NULL) {
+        free(discard_const_p(char, b->name));
+        free(b->blob.data);
+        b += 1;
+    }
+}
+
+/* Initialize a named blob and add to list of blobs */
+wbcErr wbcAddNamedBlob(size_t *num_blobs,
+               struct wbcNamedBlob **pblobs,
+               const char *name,
+               uint32_t flags,
+               uint8_t *data,
+               size_t length)
+{
+    wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
+    struct wbcNamedBlob *blobs, *blob;
+
+    if (name == NULL) {
+        return WBC_ERR_INVALID_PARAM;
+    }
+
+    /*
+     * Overallocate the b->name==NULL terminator for
+     * wbcNamedBlobDestructor
+     */
+    blobs = (struct wbcNamedBlob *)wbcAllocateMemory(
+        *num_blobs + 2, sizeof(struct wbcNamedBlob),
+        wbcNamedBlobDestructor);
+
+    if (blobs == NULL) {
+        return WBC_ERR_NO_MEMORY;
+    }
+
+    if (*pblobs != NULL) {
+        struct wbcNamedBlob *old = *pblobs;
+        memcpy(blobs, old, sizeof(struct wbcNamedBlob) * (*num_blobs));
+        if (*num_blobs != 0) {
+            /* end indicator for wbcNamedBlobDestructor */
+            old[0].name = NULL;
+        }
+        wbcFreeMemory(old);
+    }
+    *pblobs = blobs;
+
+    blob = &blobs[*num_blobs];
+
+    blob->name = strdup(name);
+    BAIL_ON_PTR_ERROR(blob->name, wbc_status);
+    blob->flags = flags;
+
+    blob->blob.length = length;
+    blob->blob.data    = (uint8_t *)malloc(length);
+    BAIL_ON_PTR_ERROR(blob->blob.data, wbc_status);
+    memcpy(blob->blob.data, data, length);
+
+    *num_blobs += 1;
+    *pblobs = blobs;
+    blobs = NULL;
+
+    wbc_status = WBC_ERR_SUCCESS;
+done:
+    wbcFreeMemory(blobs);
+    return wbc_status;
+}
diff --git a/src/sss_client/libwbclient/wbc_util_sssd.c b/src/sss_client/libwbclient/wbc_util_sssd.c
new file mode 100644
index 0000000..667b79b
--- /dev/null
+++ b/src/sss_client/libwbclient/wbc_util_sssd.c
@@ -0,0 +1,160 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Winbind client API - SSSD version
+
+   Copyright (C) Sumit Bose <sbose at redhat.com> 2014
+
+   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"
+#include "wbc_sssd_internal.h"
+
+#define WINBIND_INTERFACE_VERSION 27
+
+/** @brief Ping winbindd to see if the daemon is running
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcPing(void)
+{
+    /* TODO: add real check */
+    return WBC_ERR_SUCCESS;
+}
+
+static void wbcInterfaceDetailsDestructor(void *ptr)
+{
+    struct wbcInterfaceDetails *i = (struct wbcInterfaceDetails *)ptr;
+    free(i->winbind_version);
+    free(i->netbios_name);
+    free(i->netbios_domain);
+    free(i->dns_domain);
+}
+
+/**
+ * @brief Query useful information about the winbind service
+ *
+ * @param *_details    pointer to hold the struct wbcInterfaceDetails
+ *
+ * @return #wbcErr
+ */
+
+wbcErr wbcInterfaceDetails(struct wbcInterfaceDetails **_details)
+{
+    wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
+    struct wbcInterfaceDetails *info;
+    info = (struct wbcInterfaceDetails *)wbcAllocateMemory(
+        1, sizeof(struct wbcInterfaceDetails),
+        wbcInterfaceDetailsDestructor);
+    if (info == NULL) {
+        return WBC_ERR_NO_MEMORY;
+    }
+
+    /* TODO: currently this call just returns a suitable winbind_separator
+     * for wbinfo. */
+
+    info->interface_version = WINBIND_INTERFACE_VERSION;
+    info->winbind_version = strdup("libwbclient for SSSD");
+    if (info->winbind_version == NULL) {
+        wbc_status = WBC_ERR_NO_MEMORY;
+        goto done;
+    }
+
+    info->winbind_separator = '\\';
+
+    info->netbios_name = strdup("-not available-");
+    if (info->netbios_name == NULL) {
+        wbc_status = WBC_ERR_NO_MEMORY;
+        goto done;
+    }
+
+    info->netbios_domain = strdup("-not available-");
+    if (info->netbios_domain == NULL) {
+        wbc_status = WBC_ERR_NO_MEMORY;
+        goto done;
+    }
+
+    info->dns_domain = strdup("-not available-");
+    if (info->dns_domain == NULL) {
+        wbc_status = WBC_ERR_NO_MEMORY;
+        goto done;
+    }
+
+    *_details = info;
+    info = NULL;
+    wbc_status = WBC_ERR_SUCCESS;
+done:
+    wbcFreeMemory(info);
+    return wbc_status;
+}
+
+/** @brief Lookup the current status of a trusted domain, sync wrapper
+ *
+ * @param domain      Domain to query
+ * @param *dinfo       Pointer to returned struct wbcDomainInfo
+ *
+ * @return #wbcErr
+ */
+
+wbcErr wbcDomainInfo(const char *domain, struct wbcDomainInfo **dinfo)
+{
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+/* Get the list of current DCs */
+wbcErr wbcDcInfo(const char *domain, size_t *num_dcs,
+         const char ***dc_names, const char ***dc_ips)
+{
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+/* Resolve a NetbiosName via WINS */
+wbcErr wbcResolveWinsByName(const char *name, char **ip)
+{
+    /* SSSD does not support WINS */
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+/* Resolve an IP address via WINS into a NetbiosName */
+wbcErr wbcResolveWinsByIP(const char *ip, char **name)
+{
+    /* SSSD does not support WINS */
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+/* Enumerate the domain trusts known by Winbind */
+wbcErr wbcListTrusts(struct wbcDomainInfo **domains, size_t *num_domains)
+{
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+/* Enumerate the domain trusts known by Winbind */
+wbcErr wbcLookupDomainController(const char *domain,
+                 uint32_t flags,
+                struct wbcDomainControllerInfo **dc_info)
+{
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+/* Get extended domain controller information */
+wbcErr wbcLookupDomainControllerEx(const char *domain,
+                   struct wbcGuid *guid,
+                   const char *site,
+                   uint32_t flags,
+                   struct wbcDomainControllerInfoEx **dc_info)
+{
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
diff --git a/src/sss_client/libwbclient/wbclient.exports b/src/sss_client/libwbclient/wbclient.exports
new file mode 100644
index 0000000..a3cd116
--- /dev/null
+++ b/src/sss_client/libwbclient/wbclient.exports
@@ -0,0 +1,90 @@
+WBCLIENT_0.9 {
+    global:
+        wbcGetpwuid;
+        wbcLogoffUser;
+        wbcSidToStringBuf;
+        wbcLogonUser;
+        wbcGetgrgid;
+        wbcSetGidMapping;
+        wbcQueryGidToSid;
+        wbcListTrusts;
+        wbcGetGroups;
+        wbcDomainInfo;
+        wbcSidToGid;
+        wbcLookupRids;
+        wbcCredentialCache;
+        wbcDcInfo;
+        wbcAuthenticateUserEx;
+        wbcGetpwent;
+        wbcGetSidAliases;
+        wbcGetDisplayName;
+        wbcAllocateUid;
+        wbcSidToUid;
+        wbcChangeTrustCredentials;
+        wbcGetpwsid;
+        wbcPingDc;
+        wbcAllocateStringArray;
+        wbcErrorString;
+        wbcStringToGuid;
+        wbcStrDup;
+        wbcGetgrnam;
+        wbcGetgrlist;
+        wbcListUsers;
+        wbcRemoveUidMapping;
+        wbcLookupDomainController;
+        wbcRemoveGidMapping;
+        wbcSidTypeString;
+        wbcAllocateMemory;
+        wbcInterfaceDetails;
+        wbcCheckTrustCredentials;
+        wbcListGroups;
+        wbcLookupUserSids;
+        wbcResolveWinsByName;
+        wbcSetpwent;
+        wbcSetUidHwm;
+        wbcSidsToUnixIds;
+        wbcQuerySidToGid;
+        wbcChangeUserPasswordEx;
+        wbcPing;
+        wbcQueryUidToSid;
+        wbcEndpwent;
+        wbcLibraryDetails;
+        wbcSetgrent;
+        wbcLookupName;
+        wbcChangeUserPassword;
+        wbcSetGidHwm;
+        wbcAddNamedBlob;
+        wbcGuidToString;
+        wbcLookupSids;
+        wbcRequestResponsePriv;
+        wbcAllocateGid;
+        wbcFreeMemory;
+        wbcResolveWinsByIP;
+        wbcRequestResponse;
+        wbcStringToSid;
+        wbcLookupSid;
+        wbcCredentialSave;
+        wbcGidToSid;
+        wbcQuerySidToUid;
+        wbcEndgrent;
+        wbcGetgrent;
+        wbcAuthenticateUser;
+        wbcGetpwnam;
+        wbcLookupDomainControllerEx;
+        wbcLogoffUserEx;
+        wbcSetUidMapping;
+        wbcSidToString;
+        wbcUidToSid;
+};
+
+WBCLIENT_0.10 {
+    global:
+        wbcPingDc2;
+} WBCLIENT_0.9;
+
+WBCLIENT_0.11 {
+    global:
+        wbc*;
+    local:
+        *;
+};
diff --git a/src/sss_client/libwbclient/wbclient.h b/src/sss_client/libwbclient/wbclient.h
new file mode 100644
index 0000000..4f0e957
--- /dev/null
+++ b/src/sss_client/libwbclient/wbclient.h
@@ -0,0 +1,1372 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Winbind client API
+
+   Copyright (C) Gerald (Jerry) Carter 2007
+   Copyright (C) Volker Lendecke 2009
+
+   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/>.
+*/
+
+#ifndef _WBCLIENT_H
+#define _WBCLIENT_H
+
+#include <pwd.h>
+#include <grp.h>
+
+/* Define error types */
+
+/**
+ *  @brief Status codes returned from wbc functions
+ **/
+
+enum _wbcErrType {
+    WBC_ERR_SUCCESS = 0,             /**< Successful completion **/
+    WBC_ERR_NOT_IMPLEMENTED,         /**< Function not implemented **/
+    WBC_ERR_UNKNOWN_FAILURE,         /**< General failure **/
+    WBC_ERR_NO_MEMORY,               /**< Memory allocation error **/
+    WBC_ERR_INVALID_SID,             /**< Invalid SID format **/
+    WBC_ERR_INVALID_PARAM,           /**< An Invalid parameter was supplied **/
+    WBC_ERR_WINBIND_NOT_AVAILABLE,   /**< Winbind daemon is not available **/
+    WBC_ERR_DOMAIN_NOT_FOUND,        /**< Domain is not trusted or cannot be found **/
+    WBC_ERR_INVALID_RESPONSE,        /**< Winbind returned an invalid response **/
+    WBC_ERR_NSS_ERROR,               /**< NSS_STATUS error **/
+    WBC_ERR_AUTH_ERROR,              /**< Authentication failed **/
+    WBC_ERR_UNKNOWN_USER,            /**< User account cannot be found */
+    WBC_ERR_UNKNOWN_GROUP,           /**< Group account cannot be found */
+    WBC_ERR_PWD_CHANGE_FAILED        /**< Password Change has failed */
+};
+
+typedef enum _wbcErrType wbcErr;
+
+#define WBC_ERROR_IS_OK(x) ((x) == WBC_ERR_SUCCESS)
+
+const char *wbcErrorString(wbcErr error);
+
+/**
+ *  @brief Some useful details about the wbclient library
+ *
+ *  0.1: Initial version
+ *  0.2: Added wbcRemoveUidMapping()
+ *       Added wbcRemoveGidMapping()
+ *  0.3: Added wbcGetpwsid()
+ *     Added wbcGetSidAliases()
+ *  0.4: Added wbcSidTypeString()
+ *  0.5: Added wbcChangeTrustCredentials()
+ *  0.6: Made struct wbcInterfaceDetails char* members non-const
+ *  0.7: Added wbcSidToStringBuf()
+ *  0.8: Added wbcSidsToUnixIds() and wbcLookupSids()
+ *  0.9: Added support for WBC_ID_TYPE_BOTH
+ *  0.10: Added wbcPingDc2()
+ *  0.11: Extended wbcAuthenticateUserEx to provide PAC parsing
+ **/
+#define WBCLIENT_MAJOR_VERSION 0
+#define WBCLIENT_MINOR_VERSION 11
+#define WBCLIENT_VENDOR_VERSION "Samba libwbclient"
+struct wbcLibraryDetails {
+    uint16_t major_version;
+    uint16_t minor_version;
+    const char *vendor_version;
+};
+
+/**
+ *  @brief Some useful details about the running winbindd
+ *
+ **/
+struct wbcInterfaceDetails {
+    uint32_t interface_version;
+    char *winbind_version;
+    char winbind_separator;
+    char *netbios_name;
+    char *netbios_domain;
+    char *dns_domain;
+};
+
+/*
+ * Data types used by the Winbind Client API
+ */
+
+#ifndef WBC_MAXSUBAUTHS
+#define WBC_MAXSUBAUTHS 15 /* max sub authorities in a SID */
+#endif
+
+/**
+ *  @brief Windows Security Identifier
+ *
+ **/
+
+struct wbcDomainSid {
+    uint8_t   sid_rev_num;
+    uint8_t   num_auths;
+    uint8_t   id_auth[6];
+    uint32_t  sub_auths[WBC_MAXSUBAUTHS];
+};
+
+/**
+ * @brief Security Identifier type
+ **/
+
+enum wbcSidType {
+    WBC_SID_NAME_USE_NONE=0,
+    WBC_SID_NAME_USER=1,
+    WBC_SID_NAME_DOM_GRP=2,
+    WBC_SID_NAME_DOMAIN=3,
+    WBC_SID_NAME_ALIAS=4,
+    WBC_SID_NAME_WKN_GRP=5,
+    WBC_SID_NAME_DELETED=6,
+    WBC_SID_NAME_INVALID=7,
+    WBC_SID_NAME_UNKNOWN=8,
+    WBC_SID_NAME_COMPUTER=9
+};
+
+/**
+ * @brief Security Identifier with attributes
+ **/
+
+struct wbcSidWithAttr {
+    struct wbcDomainSid sid;
+    uint32_t attributes;
+};
+
+/* wbcSidWithAttr->attributes */
+
+#define WBC_SID_ATTR_GROUP_MANDATORY             0x00000001
+#define WBC_SID_ATTR_GROUP_ENABLED_BY_DEFAULT    0x00000002
+#define WBC_SID_ATTR_GROUP_ENABLED               0x00000004
+#define WBC_SID_ATTR_GROUP_OWNER                 0x00000008
+#define WBC_SID_ATTR_GROUP_USEFOR_DENY_ONLY      0x00000010
+#define WBC_SID_ATTR_GROUP_RESOURCE              0x20000000
+#define WBC_SID_ATTR_GROUP_LOGON_ID              0xC0000000
+
+/**
+ *  @brief Windows GUID
+ *
+ **/
+
+struct wbcGuid {
+    uint32_t time_low;
+    uint16_t time_mid;
+    uint16_t time_hi_and_version;
+    uint8_t clock_seq[2];
+    uint8_t node[6];
+};
+
+/**
+ * @brief Domain Information
+ **/
+
+struct wbcDomainInfo {
+    char *short_name;
+    char *dns_name;
+    struct wbcDomainSid sid;
+    uint32_t domain_flags;
+    uint32_t trust_flags;
+    uint32_t trust_type;
+};
+
+/* wbcDomainInfo->domain_flags */
+
+#define WBC_DOMINFO_DOMAIN_UNKNOWN    0x00000000
+#define WBC_DOMINFO_DOMAIN_NATIVE     0x00000001
+#define WBC_DOMINFO_DOMAIN_AD         0x00000002
+#define WBC_DOMINFO_DOMAIN_PRIMARY    0x00000004
+#define WBC_DOMINFO_DOMAIN_OFFLINE    0x00000008
+
+/* wbcDomainInfo->trust_flags */
+
+#define WBC_DOMINFO_TRUST_TRANSITIVE  0x00000001
+#define WBC_DOMINFO_TRUST_INCOMING    0x00000002
+#define WBC_DOMINFO_TRUST_OUTGOING    0x00000004
+
+/* wbcDomainInfo->trust_type */
+
+#define WBC_DOMINFO_TRUSTTYPE_NONE       0x00000000
+#define WBC_DOMINFO_TRUSTTYPE_FOREST     0x00000001
+#define WBC_DOMINFO_TRUSTTYPE_IN_FOREST  0x00000002
+#define WBC_DOMINFO_TRUSTTYPE_EXTERNAL   0x00000003
+
+/**
+ * @brief Generic Blob
+ **/
+
+struct wbcBlob {
+    uint8_t *data;
+    size_t length;
+};
+
+/**
+ * @brief Named Blob
+ **/
+
+struct wbcNamedBlob {
+    const char *name;
+    uint32_t flags;
+    struct wbcBlob blob;
+};
+
+/**
+ * @brief Auth User Parameters
+ **/
+
+struct wbcAuthUserParams {
+    const char *account_name;
+    const char *domain_name;
+    const char *workstation_name;
+
+    uint32_t flags;
+
+    uint32_t parameter_control;
+
+    enum wbcAuthUserLevel {
+        WBC_AUTH_USER_LEVEL_PLAIN = 1,
+        WBC_AUTH_USER_LEVEL_HASH = 2,
+        WBC_AUTH_USER_LEVEL_RESPONSE = 3,
+        WBC_AUTH_USER_LEVEL_PAC = 4
+    } level;
+    union {
+        const char *plaintext;
+        struct {
+            uint8_t nt_hash[16];
+            uint8_t lm_hash[16];
+        } hash;
+        struct {
+            uint8_t challenge[8];
+            uint32_t nt_length;
+            uint8_t *nt_data;
+            uint32_t lm_length;
+            uint8_t *lm_data;
+        } response;
+        struct wbcBlob pac;
+    } password;
+};
+
+/**
+ * @brief Logon User Parameters
+ **/
+
+struct wbcLogonUserParams {
+    const char *username;
+    const char *password;
+    size_t num_blobs;
+    struct wbcNamedBlob *blobs;
+};
+
+/**
+ * @brief ChangePassword Parameters
+ **/
+
+struct wbcChangePasswordParams {
+    const char *account_name;
+    const char *domain_name;
+
+    uint32_t flags;
+
+    enum wbcChangePasswordLevel {
+        WBC_CHANGE_PASSWORD_LEVEL_PLAIN = 1,
+        WBC_CHANGE_PASSWORD_LEVEL_RESPONSE = 2
+    } level;
+
+    union {
+        const char *plaintext;
+        struct {
+            uint32_t old_nt_hash_enc_length;
+            uint8_t *old_nt_hash_enc_data;
+            uint32_t old_lm_hash_enc_length;
+            uint8_t *old_lm_hash_enc_data;
+        } response;
+    } old_password;
+    union {
+        const char *plaintext;
+        struct {
+            uint32_t nt_length;
+            uint8_t *nt_data;
+            uint32_t lm_length;
+            uint8_t *lm_data;
+        } response;
+    } new_password;
+};
+
+/* wbcAuthUserParams->parameter_control */
+
+#define WBC_MSV1_0_CLEARTEXT_PASSWORD_ALLOWED         0x00000002
+#define WBC_MSV1_0_UPDATE_LOGON_STATISTICS            0x00000004
+#define WBC_MSV1_0_RETURN_USER_PARAMETERS             0x00000008
+#define WBC_MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT         0x00000020
+#define WBC_MSV1_0_RETURN_PROFILE_PATH                0x00000200
+#define WBC_MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT    0x00000800
+
+/* wbcAuthUserParams->flags */
+
+#define WBC_AUTH_PARAM_FLAGS_INTERACTIVE_LOGON        0x00000001
+
+/**
+ * @brief Auth User Information
+ *
+ * Some of the strings are maybe NULL
+ **/
+
+struct wbcAuthUserInfo {
+    uint32_t user_flags;
+
+    char *account_name;
+    char *user_principal;
+    char *full_name;
+    char *domain_name;
+    char *dns_domain_name;
+
+    uint32_t acct_flags;
+    uint8_t user_session_key[16];
+    uint8_t lm_session_key[8];
+
+    uint16_t logon_count;
+    uint16_t bad_password_count;
+
+    uint64_t logon_time;
+    uint64_t logoff_time;
+    uint64_t kickoff_time;
+    uint64_t pass_last_set_time;
+    uint64_t pass_can_change_time;
+    uint64_t pass_must_change_time;
+
+    char *logon_server;
+    char *logon_script;
+    char *profile_path;
+    char *home_directory;
+    char *home_drive;
+
+    /*
+     * the 1st one is the account sid
+     * the 2nd one is the primary_group sid
+     * followed by the rest of the groups
+     */
+    uint32_t num_sids;
+    struct wbcSidWithAttr *sids;
+};
+
+/**
+ * @brief Logon User Information
+ *
+ * Some of the strings are maybe NULL
+ **/
+
+struct wbcLogonUserInfo {
+    struct wbcAuthUserInfo *info;
+    size_t num_blobs;
+    struct wbcNamedBlob *blobs;
+};
+
+/* wbcAuthUserInfo->user_flags */
+
+#define WBC_AUTH_USER_INFO_GUEST                       0x00000001
+#define WBC_AUTH_USER_INFO_NOENCRYPTION                0x00000002
+#define WBC_AUTH_USER_INFO_CACHED_ACCOUNT              0x00000004
+#define WBC_AUTH_USER_INFO_USED_LM_PASSWORD            0x00000008
+#define WBC_AUTH_USER_INFO_EXTRA_SIDS                  0x00000020
+#define WBC_AUTH_USER_INFO_SUBAUTH_SESSION_KEY         0x00000040
+#define WBC_AUTH_USER_INFO_SERVER_TRUST_ACCOUNT        0x00000080
+#define WBC_AUTH_USER_INFO_NTLMV2_ENABLED              0x00000100
+#define WBC_AUTH_USER_INFO_RESOURCE_GROUPS             0x00000200
+#define WBC_AUTH_USER_INFO_PROFILE_PATH_RETURNED       0x00000400
+#define WBC_AUTH_USER_INFO_GRACE_LOGON                 0x01000000
+
+/* wbcAuthUserInfo->acct_flags */
+
+#define WBC_ACB_DISABLED                   0x00000001 /* 1 User account disabled */
+#define WBC_ACB_HOMDIRREQ                  0x00000002 /* 1 Home directory required */
+#define WBC_ACB_PWNOTREQ                   0x00000004 /* 1 User password not required */
+#define WBC_ACB_TEMPDUP                    0x00000008 /* 1 Temporary duplicate account */
+#define WBC_ACB_NORMAL                     0x00000010 /* 1 Normal user account */
+#define WBC_ACB_MNS                        0x00000020 /* 1 MNS logon user account */
+#define WBC_ACB_DOMTRUST                   0x00000040 /* 1 Interdomain trust account */
+#define WBC_ACB_WSTRUST                    0x00000080 /* 1 Workstation trust account */
+#define WBC_ACB_SVRTRUST                   0x00000100 /* 1 Server trust account */
+#define WBC_ACB_PWNOEXP                    0x00000200 /* 1 User password does not expire */
+#define WBC_ACB_AUTOLOCK                   0x00000400 /* 1 Account auto locked */
+#define WBC_ACB_ENC_TXT_PWD_ALLOWED        0x00000800 /* 1 Encryped text password is allowed */
+#define WBC_ACB_SMARTCARD_REQUIRED         0x00001000 /* 1 Smart Card required */
+#define WBC_ACB_TRUSTED_FOR_DELEGATION     0x00002000 /* 1 Trusted for Delegation */
+#define WBC_ACB_NOT_DELEGATED              0x00004000 /* 1 Not delegated */
+#define WBC_ACB_USE_DES_KEY_ONLY           0x00008000 /* 1 Use DES key only */
+#define WBC_ACB_DONT_REQUIRE_PREAUTH       0x00010000 /* 1 Preauth not required */
+#define WBC_ACB_PW_EXPIRED                 0x00020000 /* 1 Password Expired */
+#define WBC_ACB_NO_AUTH_DATA_REQD          0x00080000   /* 1 = No authorization data required */
+
+struct wbcAuthErrorInfo {
+    uint32_t nt_status;
+    char *nt_string;
+    int32_t pam_error;
+    char *display_string;
+};
+
+/**
+ * @brief User Password Policy Information
+ **/
+
+/* wbcUserPasswordPolicyInfo->password_properties */
+
+#define WBC_DOMAIN_PASSWORD_COMPLEX           0x00000001
+#define WBC_DOMAIN_PASSWORD_NO_ANON_CHANGE    0x00000002
+#define WBC_DOMAIN_PASSWORD_NO_CLEAR_CHANGE   0x00000004
+#define WBC_DOMAIN_PASSWORD_LOCKOUT_ADMINS    0x00000008
+#define WBC_DOMAIN_PASSWORD_STORE_CLEARTEXT   0x00000010
+#define WBC_DOMAIN_REFUSE_PASSWORD_CHANGE     0x00000020
+
+struct wbcUserPasswordPolicyInfo {
+    uint32_t min_length_password;
+    uint32_t password_history;
+    uint32_t password_properties;
+    uint64_t expire;
+    uint64_t min_passwordage;
+};
+
+/**
+ * @brief Change Password Reject Reason
+ **/
+
+enum wbcPasswordChangeRejectReason {
+    WBC_PWD_CHANGE_NO_ERROR=0,
+    WBC_PWD_CHANGE_PASSWORD_TOO_SHORT=1,
+    WBC_PWD_CHANGE_PWD_IN_HISTORY=2,
+    WBC_PWD_CHANGE_USERNAME_IN_PASSWORD=3,
+    WBC_PWD_CHANGE_FULLNAME_IN_PASSWORD=4,
+    WBC_PWD_CHANGE_NOT_COMPLEX=5,
+    WBC_PWD_CHANGE_MACHINE_NOT_DEFAULT=6,
+    WBC_PWD_CHANGE_FAILED_BY_FILTER=7,
+    WBC_PWD_CHANGE_PASSWORD_TOO_LONG=8
+};
+
+/* Note: this defines exist for compatibility reasons with existing code */
+#define WBC_PWD_CHANGE_REJECT_OTHER      WBC_PWD_CHANGE_NO_ERROR
+#define WBC_PWD_CHANGE_REJECT_TOO_SHORT  WBC_PWD_CHANGE_PASSWORD_TOO_SHORT
+#define WBC_PWD_CHANGE_REJECT_IN_HISTORY WBC_PWD_CHANGE_PWD_IN_HISTORY
+#define WBC_PWD_CHANGE_REJECT_COMPLEXITY WBC_PWD_CHANGE_NOT_COMPLEX
+
+/**
+ * @brief Logoff User Parameters
+ **/
+
+struct wbcLogoffUserParams {
+    const char *username;
+    size_t num_blobs;
+    struct wbcNamedBlob *blobs;
+};
+
+/** @brief Credential cache log-on parameters
+ *
+ */
+
+struct wbcCredentialCacheParams {
+        const char *account_name;
+        const char *domain_name;
+        enum wbcCredentialCacheLevel {
+                WBC_CREDENTIAL_CACHE_LEVEL_NTLMSSP = 1
+        } level;
+        size_t num_blobs;
+        struct wbcNamedBlob *blobs;
+};
+
+
+/** @brief Info returned by credential cache auth
+ *
+ */
+
+struct wbcCredentialCacheInfo {
+        size_t num_blobs;
+        struct wbcNamedBlob *blobs;
+};
+
+/*
+ * DomainControllerInfo struct
+ */
+struct wbcDomainControllerInfo {
+    char *dc_name;
+};
+
+/*
+ * DomainControllerInfoEx struct
+ */
+struct wbcDomainControllerInfoEx {
+    const char *dc_unc;
+    const char *dc_address;
+    uint16_t dc_address_type;
+    struct wbcGuid *domain_guid;
+    const char *domain_name;
+    const char *forest_name;
+    uint32_t dc_flags;
+    const char *dc_site_name;
+    const char *client_site_name;
+};
+
+/**********************************************************
+ * Memory Management
+ **********************************************************/
+
+/**
+ * @brief Free library allocated memory
+ *
+ * @param * Pointer to free
+ *
+ * @return void
+ **/
+void wbcFreeMemory(void*);
+
+
+/*
+ * Utility functions for dealing with SIDs
+ */
+
+/**
+ * @brief Get a string representation of the SID type
+ *
+ * @param type        type of the SID
+ *
+ * @return string representation of the SID type
+ */
+const char* wbcSidTypeString(enum wbcSidType type);
+
+#define WBC_SID_STRING_BUFLEN (15*11+25)
+
+/*
+ * @brief Print a sid into a buffer
+ *
+ * @param sid        Binary Security Identifier
+ * @param buf        Target buffer
+ * @param buflen    Target buffer length
+ *
+ * @return Resulting string length.
+ */
+int wbcSidToStringBuf(const struct wbcDomainSid *sid, char *buf, int buflen);
+
+/**
+ * @brief Convert a binary SID to a character string
+ *
+ * @param sid           Binary Security Identifier
+ * @param **sid_string  Resulting character string
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcSidToString(const struct wbcDomainSid *sid,
+              char **sid_string);
+
+/**
+ * @brief Convert a character string to a binary SID
+ *
+ * @param *sid_string   Character string in the form of S-...
+ * @param sid           Resulting binary SID
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcStringToSid(const char *sid_string,
+              struct wbcDomainSid *sid);
+
+/*
+ * Utility functions for dealing with GUIDs
+ */
+
+/**
+ * @brief Convert a binary GUID to a character string
+ *
+ * @param guid           Binary Guid
+ * @param **guid_string  Resulting character string
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcGuidToString(const struct wbcGuid *guid,
+               char **guid_string);
+
+/**
+ * @brief Convert a character string to a binary GUID
+ *
+ * @param *guid_string  Character string
+ * @param guid          Resulting binary GUID
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcStringToGuid(const char *guid_string,
+               struct wbcGuid *guid);
+
+/**
+ * @brief Ping winbindd to see if the daemon is running
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcPing(void);
+
+wbcErr wbcLibraryDetails(struct wbcLibraryDetails **details);
+
+wbcErr wbcInterfaceDetails(struct wbcInterfaceDetails **details);
+
+/**********************************************************
+ * Name/SID conversion
+ **********************************************************/
+
+/**
+ * @brief Convert a domain and name to SID
+ *
+ * @param dom_name    Domain name (possibly "")
+ * @param name        User or group name
+ * @param *sid        Pointer to the resolved domain SID
+ * @param *name_type  Pointer to the SID type
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcLookupName(const char *dom_name,
+             const char *name,
+             struct wbcDomainSid *sid,
+             enum wbcSidType *name_type);
+
+/**
+ * @brief Convert a SID to a domain and name
+ *
+ * @param *sid        Pointer to the domain SID to be resolved
+ * @param domain     Resolved Domain name (possibly "")
+ * @param name       Resolved User or group name
+ * @param *name_type Pointer to the resolved SID type
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcLookupSid(const struct wbcDomainSid *sid,
+            char **domain,
+            char **name,
+            enum wbcSidType *name_type);
+
+struct wbcTranslatedName {
+    enum wbcSidType type;
+    char *name;
+    int domain_index;
+};
+
+wbcErr wbcLookupSids(const struct wbcDomainSid *sids, int num_sids,
+             struct wbcDomainInfo **domains, int *num_domains,
+             struct wbcTranslatedName **names);
+
+/**
+ * @brief Translate a collection of RIDs within a domain to names
+ */
+wbcErr wbcLookupRids(struct wbcDomainSid *dom_sid,
+             int num_rids,
+             uint32_t *rids,
+             const char **domain_name,
+             const char ***names,
+             enum wbcSidType **types);
+
+/*
+ * @brief Get the groups a user belongs to
+ **/
+wbcErr wbcLookupUserSids(const struct wbcDomainSid *user_sid,
+             bool domain_groups_only,
+             uint32_t *num_sids,
+             struct wbcDomainSid **sids);
+
+/*
+ * @brief Get alias membership for sids
+ **/
+wbcErr wbcGetSidAliases(const struct wbcDomainSid *dom_sid,
+            struct wbcDomainSid *sids,
+            uint32_t num_sids,
+            uint32_t **alias_rids,
+            uint32_t *num_alias_rids);
+
+/**
+ * @brief Lists Users
+ **/
+wbcErr wbcListUsers(const char *domain_name,
+            uint32_t *num_users,
+            const char ***users);
+
+/**
+ * @brief Lists Groups
+ **/
+wbcErr wbcListGroups(const char *domain_name,
+             uint32_t *num_groups,
+             const char ***groups);
+
+wbcErr wbcGetDisplayName(const struct wbcDomainSid *sid,
+             char **pdomain,
+             char **pfullname,
+             enum wbcSidType *pname_type);
+
+/**********************************************************
+ * SID/uid/gid Mappings
+ **********************************************************/
+
+/**
+ * @brief Convert a Windows SID to a Unix uid, allocating an uid if needed
+ *
+ * @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);
+
+/**
+ * @brief Convert a Windows SID to a Unix uid if there already is a mapping
+ *
+ * @param *sid        Pointer to the domain SID to be resolved
+ * @param *puid       Pointer to the resolved uid_t value
+ *
+ * @return #wbcErr
+ *
+ **/
+wbcErr wbcQuerySidToUid(const struct wbcDomainSid *sid,
+            uid_t *puid);
+
+/**
+ * @brief Convert a Unix uid to a Windows SID, allocating a SID if needed
+ *
+ * @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);
+
+/**
+ * @brief Convert a Unix uid to a Windows SID if there already is a mapping
+ *
+ * @param uid         Unix uid to be resolved
+ * @param *sid        Pointer to the resolved domain SID
+ *
+ * @return #wbcErr
+ *
+ **/
+wbcErr wbcQueryUidToSid(uid_t uid,
+            struct wbcDomainSid *sid);
+
+/**
+ * @brief Convert a Windows SID to a Unix gid, allocating a gid if needed
+ *
+ * @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);
+
+/**
+ * @brief Convert a Windows SID to a Unix gid if there already is a mapping
+ *
+ * @param *sid        Pointer to the domain SID to be resolved
+ * @param *pgid       Pointer to the resolved gid_t value
+ *
+ * @return #wbcErr
+ *
+ **/
+wbcErr wbcQuerySidToGid(const struct wbcDomainSid *sid,
+            gid_t *pgid);
+
+/**
+ * @brief Convert a Unix gid to a Windows SID, allocating a SID if needed
+ *
+ * @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);
+
+/**
+ * @brief Convert a Unix gid to a Windows SID if there already is a mapping
+ *
+ * @param gid         Unix gid to be resolved
+ * @param *sid        Pointer to the resolved domain SID
+ *
+ * @return #wbcErr
+ *
+ **/
+wbcErr wbcQueryGidToSid(gid_t gid,
+            struct wbcDomainSid *sid);
+
+enum wbcIdType {
+    WBC_ID_TYPE_NOT_SPECIFIED,
+    WBC_ID_TYPE_UID,
+    WBC_ID_TYPE_GID,
+    WBC_ID_TYPE_BOTH
+};
+
+union wbcUnixIdContainer {
+    uid_t uid;
+    gid_t gid;
+};
+
+struct wbcUnixId {
+    enum wbcIdType type;
+    union wbcUnixIdContainer id;
+};
+
+/**
+ * @brief Convert a list of sids to unix ids
+ *
+ * @param sids        Pointer to an array of SIDs to convert
+ * @param num_sids    Number of SIDs
+ * @param ids         Preallocated output array for translated IDs
+ *
+ * @return #wbcErr
+ *
+ **/
+wbcErr wbcSidsToUnixIds(const struct wbcDomainSid *sids, uint32_t num_sids,
+            struct wbcUnixId *ids);
+
+/**
+ * @brief Obtain a new uid from Winbind
+ *
+ * @param *puid      *pointer to the allocated uid
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcAllocateUid(uid_t *puid);
+
+/**
+ * @brief Obtain a new gid from Winbind
+ *
+ * @param *pgid      Pointer to the allocated gid
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcAllocateGid(gid_t *pgid);
+
+/**
+ * @brief Set an user id mapping
+ *
+ * @param uid       Uid of the desired mapping.
+ * @param *sid      Pointer to the sid of the desired mapping.
+ *
+ * @return #wbcErr
+ *
+ * @deprecated      This method is not impemented any more and should
+ *                  be removed in the next major version change.
+ **/
+wbcErr wbcSetUidMapping(uid_t uid, const struct wbcDomainSid *sid);
+
+/**
+ * @brief Set a group id mapping
+ *
+ * @param gid       Gid of the desired mapping.
+ * @param *sid      Pointer to the sid of the desired mapping.
+ *
+ * @return #wbcErr
+ *
+ * @deprecated      This method is not impemented any more and should
+ *                  be removed in the next major version change.
+ **/
+wbcErr wbcSetGidMapping(gid_t gid, const struct wbcDomainSid *sid);
+
+/**
+ * @brief Remove a user id mapping
+ *
+ * @param uid       Uid of the mapping to remove.
+ * @param *sid      Pointer to the sid of the mapping to remove.
+ *
+ * @return #wbcErr
+ *
+ * @deprecated      This method is not impemented any more and should
+ *                  be removed in the next major version change.
+ **/
+wbcErr wbcRemoveUidMapping(uid_t uid, const struct wbcDomainSid *sid);
+
+/**
+ * @brief Remove a group id mapping
+ *
+ * @param gid       Gid of the mapping to remove.
+ * @param *sid      Pointer to the sid of the mapping to remove.
+ *
+ * @return #wbcErr
+ *
+ * @deprecated      This method is not impemented any more and should
+ *                  be removed in the next major version change.
+ **/
+wbcErr wbcRemoveGidMapping(gid_t gid, const struct wbcDomainSid *sid);
+
+/**
+ * @brief Set the highwater mark for allocated uids.
+ *
+ * @param uid_hwm      The new uid highwater mark value
+ *
+ * @return #wbcErr
+ *
+ * @deprecated      This method is not impemented any more and should
+ *                  be removed in the next major version change.
+ **/
+wbcErr wbcSetUidHwm(uid_t uid_hwm);
+
+/**
+ * @brief Set the highwater mark for allocated gids.
+ *
+ * @param gid_hwm      The new gid highwater mark value
+ *
+ * @return #wbcErr
+ *
+ * @deprecated      This method is not impemented any more and should
+ *                  be removed in the next major version change.
+ **/
+wbcErr wbcSetGidHwm(gid_t gid_hwm);
+
+/**********************************************************
+ * NSS Lookup User/Group details
+ **********************************************************/
+
+/**
+ * @brief Fill in a struct passwd* for a domain user based
+ *   on username
+ *
+ * @param *name     Username to lookup
+ * @param **pwd     Pointer to resulting struct passwd* from the query.
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcGetpwnam(const char *name, struct passwd **pwd);
+
+/**
+ * @brief Fill in a struct passwd* for a domain user based
+ *   on uid
+ *
+ * @param uid       Uid to lookup
+ * @param **pwd     Pointer to resulting struct passwd* from the query.
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcGetpwuid(uid_t uid, struct passwd **pwd);
+
+/**
+ * @brief Fill in a struct passwd* for a domain user based
+ *   on sid
+ *
+ * @param sid       Sid to lookup
+ * @param **pwd     Pointer to resulting struct passwd* from the query.
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcGetpwsid(struct wbcDomainSid * sid, struct passwd **pwd);
+
+/**
+ * @brief Fill in a struct passwd* for a domain user based
+ *   on username
+ *
+ * @param *name     Username to lookup
+ * @param **grp     Pointer to resulting struct group* from the query.
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcGetgrnam(const char *name, struct group **grp);
+
+/**
+ * @brief Fill in a struct passwd* for a domain user based
+ *   on uid
+ *
+ * @param gid       Uid to lookup
+ * @param **grp     Pointer to resulting struct group* from the query.
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcGetgrgid(gid_t gid, struct group **grp);
+
+/**
+ * @brief Reset the passwd iterator
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcSetpwent(void);
+
+/**
+ * @brief Close the passwd iterator
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcEndpwent(void);
+
+/**
+ * @brief Return the next struct passwd* entry from the pwent iterator
+ *
+ * @param **pwd       Pointer to resulting struct passwd* from the query.
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcGetpwent(struct passwd **pwd);
+
+/**
+ * @brief Reset the group iterator
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcSetgrent(void);
+
+/**
+ * @brief Close the group iterator
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcEndgrent(void);
+
+/**
+ * @brief Return the next struct group* entry from the pwent iterator
+ *
+ * @param **grp       Pointer to resulting struct group* from the query.
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcGetgrent(struct group **grp);
+
+/**
+ * @brief Return the next struct group* entry from the pwent iterator
+ *
+ * This is similar to #wbcGetgrent, just that the member list is empty
+ *
+ * @param **grp       Pointer to resulting struct group* from the query.
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcGetgrlist(struct group **grp);
+
+/**
+ * @brief Return the unix group array belonging to the given user
+ *
+ * @param *account       The given user name
+ * @param *num_groups    Number of elements returned in the groups array
+ * @param **_groups      Pointer to resulting gid_t array.
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcGetGroups(const char *account,
+            uint32_t *num_groups,
+            gid_t **_groups);
+
+
+/**********************************************************
+ * Lookup Domain information
+ **********************************************************/
+
+/**
+ * @brief Lookup the current status of a trusted domain
+ *
+ * @param domain        The domain to query
+ *
+ * @param dinfo          A pointer to store the returned domain_info struct.
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcDomainInfo(const char *domain,
+             struct wbcDomainInfo **dinfo);
+
+/**
+ * @brief Lookup the currently contacted DCs
+ *
+ * @param domain        The domain to query
+ *
+ * @param num_dcs       Number of DCs currently known
+ * @param dc_names      Names of the currently known DCs
+ * @param dc_ips        IP addresses of the currently known DCs
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcDcInfo(const char *domain, size_t *num_dcs,
+         const char ***dc_names, const char ***dc_ips);
+
+/**
+ * @brief Enumerate the domain trusts known by Winbind
+ *
+ * @param **domains     Pointer to the allocated domain list array
+ * @param *num_domains  Pointer to number of domains returned
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcListTrusts(struct wbcDomainInfo **domains,
+             size_t *num_domains);
+
+/* Flags for wbcLookupDomainController */
+
+#define WBC_LOOKUP_DC_FORCE_REDISCOVERY        0x00000001
+#define WBC_LOOKUP_DC_DS_REQUIRED              0x00000010
+#define WBC_LOOKUP_DC_DS_PREFERRED             0x00000020
+#define WBC_LOOKUP_DC_GC_SERVER_REQUIRED       0x00000040
+#define WBC_LOOKUP_DC_PDC_REQUIRED             0x00000080
+#define WBC_LOOKUP_DC_BACKGROUND_ONLY          0x00000100
+#define WBC_LOOKUP_DC_IP_REQUIRED              0x00000200
+#define WBC_LOOKUP_DC_KDC_REQUIRED             0x00000400
+#define WBC_LOOKUP_DC_TIMESERV_REQUIRED        0x00000800
+#define WBC_LOOKUP_DC_WRITABLE_REQUIRED        0x00001000
+#define WBC_LOOKUP_DC_GOOD_TIMESERV_PREFERRED  0x00002000
+#define WBC_LOOKUP_DC_AVOID_SELF               0x00004000
+#define WBC_LOOKUP_DC_ONLY_LDAP_NEEDED         0x00008000
+#define WBC_LOOKUP_DC_IS_FLAT_NAME             0x00010000
+#define WBC_LOOKUP_DC_IS_DNS_NAME              0x00020000
+#define WBC_LOOKUP_DC_TRY_NEXTCLOSEST_SITE     0x00040000
+#define WBC_LOOKUP_DC_DS_6_REQUIRED            0x00080000
+#define WBC_LOOKUP_DC_RETURN_DNS_NAME          0x40000000
+#define WBC_LOOKUP_DC_RETURN_FLAT_NAME         0x80000000
+
+/**
+ * @brief Enumerate the domain trusts known by Winbind
+ *
+ * @param domain        Name of the domain to query for a DC
+ * @param flags         Bit flags used to control the domain location query
+ * @param *dc_info      Pointer to the returned domain controller information
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcLookupDomainController(const char *domain,
+                 uint32_t flags,
+                 struct wbcDomainControllerInfo **dc_info);
+
+/**
+ * @brief Get extended domain controller information
+ *
+ * @param domain        Name of the domain to query for a DC
+ * @param guid          Guid of the domain to query for a DC
+ * @param site          Site of the domain to query for a DC
+ * @param flags         Bit flags used to control the domain location query
+ * @param *dc_info      Pointer to the returned extended domain controller information
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcLookupDomainControllerEx(const char *domain,
+                   struct wbcGuid *guid,
+                   const char *site,
+                   uint32_t flags,
+                   struct wbcDomainControllerInfoEx **dc_info);
+
+/**********************************************************
+ * Athenticate functions
+ **********************************************************/
+
+/**
+ * @brief Authenticate a username/password pair
+ *
+ * @param username     Name of user to authenticate
+ * @param password     Clear text password os user
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcAuthenticateUser(const char *username,
+               const char *password);
+
+/**
+ * @brief Authenticate with more detailed information
+ *
+ * @param params       Input parameters, WBC_AUTH_USER_LEVEL_HASH
+ *                     is not supported yet
+ * @param info         Output details on WBC_ERR_SUCCESS
+ * @param error        Output details on WBC_ERR_AUTH_ERROR
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcAuthenticateUserEx(const struct wbcAuthUserParams *params,
+                 struct wbcAuthUserInfo **info,
+                 struct wbcAuthErrorInfo **error);
+
+/**
+ * @brief Logon a User
+ *
+ * @param[in]  params      Pointer to a wbcLogonUserParams structure
+ * @param[out] info        Pointer to a pointer to a wbcLogonUserInfo structure
+ * @param[out] error       Pointer to a pointer to a wbcAuthErrorInfo structure
+ * @param[out] policy      Pointer to a pointer to a wbcUserPasswordPolicyInfo structure
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcLogonUser(const struct wbcLogonUserParams *params,
+            struct wbcLogonUserInfo **info,
+            struct wbcAuthErrorInfo **error,
+            struct wbcUserPasswordPolicyInfo **policy);
+
+/**
+ * @brief Trigger a logoff notification to Winbind for a specific user
+ *
+ * @param username    Name of user to remove from Winbind's list of
+ *                    logged on users.
+ * @param uid         Uid assigned to the username
+ * @param ccfilename  Absolute path to the Krb5 credentials cache to
+ *                    be removed
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcLogoffUser(const char *username,
+             uid_t uid,
+             const char *ccfilename);
+
+/**
+ * @brief Trigger an extended logoff notification to Winbind for a specific user
+ *
+ * @param params      A wbcLogoffUserParams structure
+ * @param error       User output details on error
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcLogoffUserEx(const struct wbcLogoffUserParams *params,
+               struct wbcAuthErrorInfo **error);
+
+/**
+ * @brief Change a password for a user
+ *
+ * @param username      Name of user to authenticate
+ * @param old_password  Old clear text password of user
+ * @param new_password  New clear text password of user
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcChangeUserPassword(const char *username,
+                 const char *old_password,
+                 const char *new_password);
+
+/**
+ * @brief Change a password for a user with more detailed information upon
+ *   failure
+ *
+ * @param params                Input parameters
+ * @param error                 User output details on WBC_ERR_PWD_CHANGE_FAILED
+ * @param reject_reason         New password reject reason on WBC_ERR_PWD_CHANGE_FAILED
+ * @param policy                Password policy output details on WBC_ERR_PWD_CHANGE_FAILED
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcChangeUserPasswordEx(const struct wbcChangePasswordParams *params,
+                   struct wbcAuthErrorInfo **error,
+                   enum wbcPasswordChangeRejectReason *reject_reason,
+                   struct wbcUserPasswordPolicyInfo **policy);
+
+/**
+ * @brief Authenticate a user with cached credentials
+ *
+ * @param *params    Pointer to a wbcCredentialCacheParams structure
+ * @param **info     Pointer to a pointer to a wbcCredentialCacheInfo structure
+ * @param **error    Pointer to a pointer to a wbcAuthErrorInfo structure
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcCredentialCache(struct wbcCredentialCacheParams *params,
+                          struct wbcCredentialCacheInfo **info,
+                          struct wbcAuthErrorInfo **error);
+
+/**
+ * @brief Save a password with winbind for doing wbcCredentialCache() later
+ *
+ * @param *user         Username
+ * @param *password  Password
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcCredentialSave(const char *user, const char *password);
+
+/**********************************************************
+ * Resolve functions
+ **********************************************************/
+
+/**
+ * @brief Resolve a NetbiosName via WINS
+ *
+ * @param name         Name to resolve
+ * @param *ip          Pointer to the ip address string
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcResolveWinsByName(const char *name, char **ip);
+
+/**
+ * @brief Resolve an IP address via WINS into a NetbiosName
+ *
+ * @param ip          The ip address string
+ * @param *name       Pointer to the name
+ *
+ * @return #wbcErr
+ *
+ **/
+wbcErr wbcResolveWinsByIP(const char *ip, char **name);
+
+/**********************************************************
+ * Trusted domain functions
+ **********************************************************/
+
+/**
+ * @brief Trigger a verification of the trust credentials of a specific domain
+ *
+ * @param *domain      The name of the domain.
+ * @param error        Output details on WBC_ERR_AUTH_ERROR
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcCheckTrustCredentials(const char *domain,
+                struct wbcAuthErrorInfo **error);
+
+/**
+ * @brief Trigger a change of the trust credentials for a specific domain
+ *
+ * @param *domain      The name of the domain.
+ * @param error        Output details on WBC_ERR_AUTH_ERROR
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcChangeTrustCredentials(const char *domain,
+                 struct wbcAuthErrorInfo **error);
+
+/**
+ * @brief Trigger a no-op call through the NETLOGON pipe. Low-cost
+ *        version of wbcCheckTrustCredentials
+ *
+ * @param *domain      The name of the domain, only NULL for the default domain is
+ *                     supported yet. Other values than NULL will result in
+ *                     WBC_ERR_NOT_IMPLEMENTED.
+ * @param error        Output details on WBC_ERR_AUTH_ERROR
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcPingDc(const char *domain, struct wbcAuthErrorInfo **error);
+
+/**
+ * @brief Trigger a no-op call through the NETLOGON pipe. Low-cost
+ *        version of wbcCheckTrustCredentials
+ *
+ * @param *domain      The name of the domain, only NULL for the default domain is
+ *                     supported yet. Other values than NULL will result in
+ *                     WBC_ERR_NOT_IMPLEMENTED.
+ * @param error        Output details on WBC_ERR_AUTH_ERROR
+ * @param dcname       DC that was attempted to ping
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcPingDc2(const char *domain, struct wbcAuthErrorInfo **error,
+          char **dcname);
+
+/**********************************************************
+ * Helper functions
+ **********************************************************/
+
+/**
+ * @brief Initialize a named blob and add to list of blobs
+ *
+ * @param[in,out] num_blobs     Pointer to the number of blobs
+ * @param[in,out] blobs         Pointer to an array of blobs
+ * @param[in]     name          Name of the new named blob
+ * @param[in]     flags         Flags of the new named blob
+ * @param[in]     data          Blob data of new blob
+ * @param[in]     length        Blob data length of new blob
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcAddNamedBlob(size_t *num_blobs,
+               struct wbcNamedBlob **blobs,
+               const char *name,
+               uint32_t flags,
+               uint8_t *data,
+               size_t length);
+
+#endif      /* _WBCLIENT_H */
diff --git a/src/sss_client/libwbclient/wbclient.pc.in b/src/sss_client/libwbclient/wbclient.pc.in
new file mode 100644
index 0000000..744626f
--- /dev/null
+++ b/src/sss_client/libwbclient/wbclient.pc.in
@@ -0,0 +1,11 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: wbclient
+Description: Samba wbclient API
+Version: 0.11
+Libs: -L${libdir} -lwbclient
+Cflags:
+URL: http://fedorahosted.org/sssd/, http://www.samba.org
diff --git a/src/sss_client/libwbclient/wbclient_common.c b/src/sss_client/libwbclient/wbclient_common.c
new file mode 100644
index 0000000..a8fd3fc
--- /dev/null
+++ b/src/sss_client/libwbclient/wbclient_common.c
@@ -0,0 +1,178 @@
+/*
+   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 Translate an error value into a string
+ *
+ * @param error
+ *
+ * @return a pointer to a static string
+ **/
+const char *wbcErrorString(wbcErr error)
+{
+    switch (error) {
+    case WBC_ERR_SUCCESS:
+        return "WBC_ERR_SUCCESS";
+    case WBC_ERR_NOT_IMPLEMENTED:
+        return "WBC_ERR_NOT_IMPLEMENTED";
+    case WBC_ERR_UNKNOWN_FAILURE:
+        return "WBC_ERR_UNKNOWN_FAILURE";
+    case WBC_ERR_NO_MEMORY:
+        return "WBC_ERR_NO_MEMORY";
+    case WBC_ERR_INVALID_SID:
+        return "WBC_ERR_INVALID_SID";
+    case WBC_ERR_INVALID_PARAM:
+        return "WBC_ERR_INVALID_PARAM";
+    case WBC_ERR_WINBIND_NOT_AVAILABLE:
+        return "WBC_ERR_WINBIND_NOT_AVAILABLE";
+    case WBC_ERR_DOMAIN_NOT_FOUND:
+        return "WBC_ERR_DOMAIN_NOT_FOUND";
+    case WBC_ERR_INVALID_RESPONSE:
+        return "WBC_ERR_INVALID_RESPONSE";
+    case WBC_ERR_NSS_ERROR:
+        return "WBC_ERR_NSS_ERROR";
+    case WBC_ERR_UNKNOWN_USER:
+        return "WBC_ERR_UNKNOWN_USER";
+    case WBC_ERR_UNKNOWN_GROUP:
+        return "WBC_ERR_UNKNOWN_GROUP";
+    case WBC_ERR_AUTH_ERROR:
+        return "WBC_ERR_AUTH_ERROR";
+    case WBC_ERR_PWD_CHANGE_FAILED:
+        return "WBC_ERR_PWD_CHANGE_FAILED";
+    }
+
+    return "unknown wbcErr value";
+}
+
+#define WBC_MAGIC (0x7a2b0e1e)
+#define WBC_MAGIC_FREE (0x875634fe)
+
+struct wbcMemPrefix {
+    uint32_t magic;
+    void (*destructor)(void *ptr);
+};
+
+static size_t wbcPrefixLen(void)
+{
+    size_t result = sizeof(struct wbcMemPrefix);
+    return (result + 15) & ~15;
+}
+
+static struct wbcMemPrefix *wbcMemToPrefix(void *ptr)
+{
+    return (struct wbcMemPrefix *)(((char *)ptr) - wbcPrefixLen());
+}
+
+void *wbcAllocateMemory(size_t nelem, size_t elsize,
+            void (*destructor)(void *ptr))
+{
+    struct wbcMemPrefix *result;
+
+    if (nelem >= (2<<24)/elsize) {
+        /* basic protection against integer wrap */
+        return NULL;
+    }
+
+    result = (struct wbcMemPrefix *)calloc(
+        1, nelem*elsize + wbcPrefixLen());
+    if (result == NULL) {
+        return NULL;
+    }
+    result->magic = WBC_MAGIC;
+    result->destructor = destructor;
+    return ((char *)result) + wbcPrefixLen();
+}
+
+/* Free library allocated memory */
+void wbcFreeMemory(void *p)
+{
+    struct wbcMemPrefix *wbcMem;
+
+    if (p == NULL) {
+        return;
+    }
+    wbcMem = wbcMemToPrefix(p);
+    if (wbcMem->magic != WBC_MAGIC) {
+        return;
+    }
+
+    /* paranoid check to ensure we don't double free */
+    wbcMem->magic = WBC_MAGIC_FREE;
+
+    if (wbcMem->destructor != NULL) {
+        wbcMem->destructor(p);
+    }
+    free(wbcMem);
+    return;
+}
+
+char *wbcStrDup(const char *str)
+{
+    char *result;
+    size_t len;
+
+    len = strlen(str);
+    result = (char *)wbcAllocateMemory(len+1, sizeof(char), NULL);
+    if (result == NULL) {
+        return NULL;
+    }
+    memcpy(result, str, len+1);
+    return result;
+}
+
+static void wbcStringArrayDestructor(void *ptr)
+{
+    char **p = (char **)ptr;
+    while (*p != NULL) {
+        free(*p);
+        p += 1;
+    }
+}
+
+const char **wbcAllocateStringArray(int num_strings)
+{
+    return (const char **)wbcAllocateMemory(
+        num_strings + 1, sizeof(const char *),
+        wbcStringArrayDestructor);
+}
+
+wbcErr wbcLibraryDetails(struct wbcLibraryDetails **_details)
+{
+    struct wbcLibraryDetails *info;
+
+    info = (struct wbcLibraryDetails *)wbcAllocateMemory(
+        1, sizeof(struct wbcLibraryDetails), NULL);
+
+    if (info == NULL) {
+        return WBC_ERR_NO_MEMORY;
+    }
+
+    info->major_version = WBCLIENT_MAJOR_VERSION;
+    info->minor_version = WBCLIENT_MINOR_VERSION;
+    info->vendor_version = WBCLIENT_VENDOR_VERSION;
+
+    *_details = info;
+    return WBC_ERR_SUCCESS;
+}
diff --git a/src/sss_client/libwbclient/wbclient_internal.h b/src/sss_client/libwbclient/wbclient_internal.h
new file mode 100644
index 0000000..20e2c63
--- /dev/null
+++ b/src/sss_client/libwbclient/wbclient_internal.h
@@ -0,0 +1,44 @@
+/*
+   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/>.
+*/
+
+#ifndef _WBCLIENT_INTERNAL_H
+#define _WBCLIENT_INTERNAL_H
+
+/* Private functions */
+
+struct winbindd_request;
+struct winbindd_response;
+
+wbcErr wbcRequestResponse(int cmd,
+              struct winbindd_request *request,
+              struct winbindd_response *response);
+
+wbcErr wbcRequestResponsePriv(int cmd,
+                  struct winbindd_request *request,
+                  struct winbindd_response *response);
+
+void *wbcAllocateMemory(size_t nelem, size_t elsize,
+            void (*destructor)(void *ptr));
+
+char *wbcStrDup(const char *str);
+const char **wbcAllocateStringArray(int num_strings);
+
+#endif      /* _WBCLIENT_INTERNAL_H */
diff --git a/src/sss_client/libwbclient/wbclient_sssd.c b/src/sss_client/libwbclient/wbclient_sssd.c
new file mode 100644
index 0000000..28cc985
--- /dev/null
+++ b/src/sss_client/libwbclient/wbclient_sssd.c
@@ -0,0 +1,40 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Winbind client API - SSSD version
+
+   Copyright (C) Sumit Bose <sbose at redhat.com> 2014
+
+   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"
+#include "wbc_sssd_internal.h"
+
+wbcErr wbcRequestResponse(int cmd,
+              struct winbindd_request *request,
+              struct winbindd_response *response)
+{
+    /* Helper to make API check happy */
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
+
+wbcErr wbcRequestResponsePriv(int cmd,
+                  struct winbindd_request *request,
+                  struct winbindd_response *response)
+{
+    /* Helper to make API check happy */
+    WBC_SSSD_NOT_IMPLEMENTED;
+}
-- 
1.8.3.1



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