Add an early prototyp of pdb_ads.c.

The purpose of this module is to connect to a locally running samba4 ldap
server for an alternative "Franky" setup. Right now it contains a couple of
gross hacks: For example it just takes the s4-chosed RID directly as uid/gid...

Checking in tldap and pdb_ads now, I think 3777 insertions are enough for a
start...

1 files changed, 1284 insertions, 0 deletions

diff --git a/source3/passdb/pdb_ads.c b/source3/passdb/pdb_ads.c
new file mode 100644
index 0000000000..c55140ed93
--- /dev/null
+++ b/source3/passdb/pdb_ads.c
@@ -0,0 +1,1284 @@
+/*
+   Unix SMB/CIFS implementation.
+   pdb_ldap with ads schema
+   Copyright (C) Volker Lendecke 2009
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+
+static NTSTATUS pdb_ads_getsampwsid(struct pdb_methods *m,
+				    struct samu *sam_acct,
+				    const DOM_SID *sid);
+
+struct pdb_ads_state {
+	struct tldap_context *ld;
+	struct dom_sid domainsid;
+	char *domaindn;
+	char *configdn;
+	char *netbiosname;
+};
+
+static bool pdb_ads_pull_time(struct tldap_message *msg, const char *attr,
+			      time_t *ptime)
+{
+	uint64_t tmp;
+
+	if (!tldap_pull_uint64(msg, attr, &tmp)) {
+		return false;
+	}
+	*ptime = uint64s_nt_time_to_unix_abs(&tmp);
+	return true;
+}
+
+static gid_t pdb_ads_sid2gid(const struct dom_sid *sid)
+{
+	uint32_t rid;
+	sid_peek_rid(sid, &rid);
+	return rid;
+}
+
+struct pdb_ads_samu_private {
+	char *dn;
+	struct tldap_message *ldapmsg;
+};
+
+static struct samu *pdb_ads_init_guest(TALLOC_CTX *mem_ctx,
+				       struct pdb_methods *m)
+{
+	struct pdb_ads_state *state = talloc_get_type_abort(
+		m->private_data, struct pdb_ads_state);
+	struct dom_sid guest_sid;
+	struct samu *guest;
+	NTSTATUS status;
+
+	sid_compose(&guest_sid, &state->domainsid, DOMAIN_USER_RID_GUEST);
+
+	guest = samu_new(mem_ctx);
+	if (guest == NULL) {
+		return NULL;
+	}
+
+	status = pdb_ads_getsampwsid(m, guest, &guest_sid);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(10, ("Could not init guest account: %s\n",
+			   nt_errstr(status)));
+		TALLOC_FREE(guest);
+		return NULL;
+	}
+	return guest;
+}
+
+static struct pdb_ads_samu_private *pdb_ads_get_samu_private(
+	struct pdb_methods *m, struct samu *sam)
+{
+	struct pdb_ads_samu_private *result;
+	uint32_t rid;
+
+	result = (struct pdb_ads_samu_private *)
+		pdb_get_backend_private_data(sam, m);
+
+	if (result != NULL) {
+		return talloc_get_type_abort(
+			result, struct pdb_ads_samu_private);
+	}
+
+	/*
+	 * This is now a weirdness of the passdb API. For the guest user we
+	 * are not asked first.
+	 */
+	sid_peek_rid(pdb_get_user_sid(sam), &rid);
+
+	if (rid == DOMAIN_USER_RID_GUEST) {
+		struct samu *guest = pdb_ads_init_guest(talloc_tos(), m);
+
+		if (guest == NULL) {
+			return NULL;
+		}
+		result = talloc_get_type_abort(
+			pdb_get_backend_private_data(guest, m),
+			struct pdb_ads_samu_private);
+		pdb_set_backend_private_data(
+			sam, talloc_move(sam, &result), NULL, m, PDB_SET);
+		TALLOC_FREE(guest);
+		return talloc_get_type_abort(
+			pdb_get_backend_private_data(sam, m),
+			struct pdb_ads_samu_private);
+	}
+
+	return NULL;
+}
+
+static NTSTATUS pdb_ads_init_sam_from_ads(struct pdb_methods *m,
+					  struct samu *sam,
+					  struct tldap_message *entry)
+{
+	struct pdb_ads_state *state = talloc_get_type_abort(
+		m->private_data, struct pdb_ads_state);
+	TALLOC_CTX *frame = talloc_stackframe();
+	struct pdb_ads_samu_private *priv;
+	NTSTATUS status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+	char *str;
+	time_t tmp_time;
+	struct dom_sid sid;
+	uint64_t n;
+	DATA_BLOB blob;
+
+	priv = talloc(sam, struct pdb_ads_samu_private);
+	if (priv == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	if (!tldap_entry_dn(entry, &priv->dn)) {
+		TALLOC_FREE(priv);
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	str = tldap_talloc_single_attribute(entry, "samAccountName", sam);
+	if (str == NULL) {
+		DEBUG(10, ("no samAccountName\n"));
+		goto fail;
+	}
+	pdb_set_username(sam, str, PDB_SET);
+	TALLOC_FREE(str);
+
+	if (pdb_ads_pull_time(entry, "lastLogon", &tmp_time)) {
+		pdb_set_logon_time(sam, tmp_time, PDB_SET);
+	}
+	if (pdb_ads_pull_time(entry, "lastLogoff", &tmp_time)) {
+		pdb_set_logoff_time(sam, tmp_time, PDB_SET);
+	}
+	if (pdb_ads_pull_time(entry, "pwdLastSet", &tmp_time)) {
+		pdb_set_pass_last_set_time(sam, tmp_time, PDB_SET);
+	}
+	if (pdb_ads_pull_time(entry, "accountExpires", &tmp_time)) {
+		pdb_set_pass_last_set_time(sam, tmp_time, PDB_SET);
+	}
+
+	str = tldap_talloc_single_attribute(entry, "samAccoutName",
+					    talloc_tos());
+	if (str != NULL) {
+		pdb_set_username(sam, str, PDB_SET);
+	}
+
+	str = tldap_talloc_single_attribute(entry, "displayName",
+					    talloc_tos());
+	if (str != NULL) {
+		pdb_set_fullname(sam, str, PDB_SET);
+	}
+
+	str = tldap_talloc_single_attribute(entry, "homeDirectory",
+					    talloc_tos());
+	if (str != NULL) {
+		pdb_set_homedir(sam, str, PDB_SET);
+	}
+
+	str = tldap_talloc_single_attribute(entry, "homeDrive", talloc_tos());
+	if (str != NULL) {
+		pdb_set_dir_drive(sam, str, PDB_SET);
+	}
+
+	str = tldap_talloc_single_attribute(entry, "scriptPath", talloc_tos());
+	if (str != NULL) {
+		pdb_set_logon_script(sam, str, PDB_SET);
+	}
+
+	str = tldap_talloc_single_attribute(entry, "profilePath",
+					    talloc_tos());
+	if (str != NULL) {
+		pdb_set_profile_path(sam, str, PDB_SET);
+	}
+
+	str = tldap_talloc_single_attribute(entry, "profilePath",
+					    talloc_tos());
+	if (str != NULL) {
+		pdb_set_profile_path(sam, str, PDB_SET);
+	}
+
+	if (!tldap_pull_binsid(entry, "objectSid", &sid)) {
+		DEBUG(10, ("Could not pull SID\n"));
+		goto fail;
+	}
+	pdb_set_user_sid(sam, &sid, PDB_SET);
+
+	if (!tldap_pull_uint64(entry, "userAccountControl", &n)) {
+		DEBUG(10, ("Could not pull userAccountControl\n"));
+		goto fail;
+	}
+	pdb_set_acct_ctrl(sam, ads_uf2acb(n), PDB_SET);
+
+	if (tldap_get_single_valueblob(entry, "unicodePwd", &blob)) {
+		if (blob.length != NT_HASH_LEN) {
+			DEBUG(0, ("Got NT hash of length %d, expected %d\n",
+				  (int)blob.length, NT_HASH_LEN));
+			goto fail;
+		}
+		pdb_set_nt_passwd(sam, blob.data, PDB_SET);
+	}
+
+	if (tldap_get_single_valueblob(entry, "dBCSPwd", &blob)) {
+		if (blob.length != LM_HASH_LEN) {
+			DEBUG(0, ("Got LM hash of length %d, expected %d\n",
+				  (int)blob.length, LM_HASH_LEN));
+			goto fail;
+		}
+		pdb_set_lanman_passwd(sam, blob.data, PDB_SET);
+	}
+
+	if (tldap_pull_uint64(entry, "primaryGroupID", &n)) {
+		sid_compose(&sid, &state->domainsid, n);
+		pdb_set_group_sid(sam, &sid, PDB_SET);
+
+	}
+
+	priv->ldapmsg = talloc_move(priv, &entry);
+	pdb_set_backend_private_data(sam, priv, NULL, m, PDB_SET);
+
+	status = NT_STATUS_OK;
+fail:
+	TALLOC_FREE(frame);
+	return status;
+}
+
+static bool pdb_ads_init_ads_from_sam(struct pdb_ads_state *state,
+				      struct tldap_message *existing,
+				      TALLOC_CTX *mem_ctx,
+				      int *pnum_mods, struct tldap_mod **pmods,
+				      struct samu *sam)
+{
+	bool ret = true;
+
+	/* TODO: All fields :-) */
+
+	ret &= tldap_make_mod_fmt(
+		existing, mem_ctx, pnum_mods, pmods, "displayName",
+		pdb_get_fullname(sam));
+
+	ret &= tldap_make_mod_blob(
+		existing, mem_ctx, pnum_mods, pmods, "unicodePwd",
+		data_blob_const(pdb_get_nt_passwd(sam), NT_HASH_LEN));
+
+	ret &= tldap_make_mod_blob(
+		existing, mem_ctx, pnum_mods, pmods, "dBCSPwd",
+		data_blob_const(pdb_get_lanman_passwd(sam), NT_HASH_LEN));
+
+	return ret;
+}
+
+static NTSTATUS pdb_ads_getsampwfilter(struct pdb_methods *m,
+				       struct pdb_ads_state *state,
+				       struct samu *sam_acct,
+				       const char *filter)
+{
+	const char * attrs[] = {
+		"lastLogon", "lastLogoff", "pwdLastSet", "accountExpires",
+		"sAMAccountName", "displayName", "homeDirectory",
+		"homeDrive", "scriptPath", "profilePath", "description",
+		"userWorkstations", "comment", "userParameters", "objectSid",
+		"primaryGroupID", "userAccountControl", "logonHours",
+		"badPwdCount", "logonCount", "countryCode", "codePage",
+		"unicodePwd", "dBCSPwd" };
+	struct tldap_message **users;
+	int rc, count;
+
+	rc = tldap_search_fmt(state->ld, state->domaindn, TLDAP_SCOPE_SUB,
+			      attrs, ARRAY_SIZE(attrs), 0, talloc_tos(),
+			      &users, filter);
+	if (rc != TLDAP_SUCCESS) {
+		DEBUG(10, ("ldap_search failed %s\n",
+			   tldap_errstr(debug_ctx(), state->ld, rc)));
+		return NT_STATUS_LDAP(rc);
+	}
+
+	count = talloc_array_length(users);
+	if (count != 1) {
+		DEBUG(10, ("Expected 1 user, got %d\n", count));
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	return pdb_ads_init_sam_from_ads(m, sam_acct, users[0]);
+}
+
+static NTSTATUS pdb_ads_getsampwnam(struct pdb_methods *m,
+				    struct samu *sam_acct,
+				    const char *username)
+{
+	struct pdb_ads_state *state = talloc_get_type_abort(
+		m->private_data, struct pdb_ads_state);
+	char *filter;
+
+	filter = talloc_asprintf(
+		talloc_tos(), "(&(samaccountname=%s)(objectclass=user))",
+		username);
+	NT_STATUS_HAVE_NO_MEMORY(filter);
+
+	return pdb_ads_getsampwfilter(m, state, sam_acct, filter);
+}
+
+static NTSTATUS pdb_ads_getsampwsid(struct pdb_methods *m,
+				    struct samu *sam_acct,
+				    const DOM_SID *sid)
+{
+	struct pdb_ads_state *state = talloc_get_type_abort(
+		m->private_data, struct pdb_ads_state);
+	char *sidstr, *filter;
+
+	sidstr = sid_binstring(talloc_tos(), sid);
+	NT_STATUS_HAVE_NO_MEMORY(sidstr);
+
+	filter = talloc_asprintf(
+		talloc_tos(), "(&(objectsid=%s)(objectclass=user))", sidstr);
+	TALLOC_FREE(sidstr);
+	NT_STATUS_HAVE_NO_MEMORY(filter);
+
+	return pdb_ads_getsampwfilter(m, state, sam_acct, filter);
+}
+
+static NTSTATUS pdb_ads_create_user(struct pdb_methods *m,
+				    TALLOC_CTX *tmp_ctx,
+				    const char *name, uint32 acct_flags,
+				    uint32 *rid)
+{
+	struct pdb_ads_state *state = talloc_get_type_abort(
+		m->private_data, struct pdb_ads_state);
+	const char *attrs[1] = { "objectSid" };
+	struct tldap_mod *mods = NULL;
+	int num_mods = 0;
+	struct tldap_message **user;
+	struct dom_sid sid;
+	char *dn;
+	int rc;
+	bool ok;
+
+	dn = talloc_asprintf(talloc_tos(), "cn=%s,cn=users,%s", name,
+			     state->domaindn);
+	if (dn == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	/* TODO: Create machines etc */
+
+	ok = true;
+	ok &= tldap_make_mod_fmt(
+		NULL, talloc_tos(), &num_mods, &mods, "objectClass", "user");
+	ok &= tldap_make_mod_fmt(
+		NULL, talloc_tos(), &num_mods, &mods, "samAccountName", "%s",
+		name);
+	if (!ok) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	rc = tldap_add(state->ld, dn, num_mods, mods, NULL, NULL);
+	if (rc != TLDAP_SUCCESS) {
+		DEBUG(10, ("ldap_add failed %s\n",
+			   tldap_errstr(debug_ctx(), state->ld, rc)));
+		TALLOC_FREE(dn);
+		return NT_STATUS_LDAP(rc);
+	}
+
+	rc = tldap_search_fmt(state->ld, state->domaindn, TLDAP_SCOPE_SUB,
+			      attrs, ARRAY_SIZE(attrs), 0, talloc_tos(), &user,
+			     "(&(objectclass=user)(samaccountname=%s))",
+			     name);
+	if (rc != TLDAP_SUCCESS) {
+		DEBUG(10, ("Could not find just created user %s: %s\n",
+			   name, tldap_errstr(debug_ctx(), state->ld, rc)));
+		TALLOC_FREE(dn);
+		return NT_STATUS_LDAP(rc);
+	}
+
+	if (talloc_array_length(user) != 1) {
+		DEBUG(10, ("Got %d users, expected one\n",
+			   (int)talloc_array_length(user)));
+		TALLOC_FREE(dn);
+		return NT_STATUS_LDAP(rc);
+	}
+
+	if (!tldap_pull_binsid(user[0], "objectSid", &sid)) {
+		DEBUG(10, ("Could not fetch objectSid from user %s\n",
+			   name));
+		TALLOC_FREE(dn);
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	sid_peek_rid(&sid, rid);
+	TALLOC_FREE(dn);
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS pdb_ads_delete_user(struct pdb_methods *m,
+				    TALLOC_CTX *tmp_ctx,
+				    struct samu *sam)
+{
+	struct pdb_ads_state *state = talloc_get_type_abort(
+		m->private_data, struct pdb_ads_state);
+	struct pdb_ads_samu_private *priv = pdb_ads_get_samu_private(m, sam);
+	int rc;
+
+	rc = tldap_delete(state->ld, priv->dn, NULL, NULL);
+	if (rc != TLDAP_SUCCESS) {
+		DEBUG(10, ("ldap_delete for %s failed: %s\n", priv->dn,
+			   tldap_errstr(debug_ctx(), state->ld, rc)));
+		return NT_STATUS_LDAP(rc);
+	}
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS pdb_ads_add_sam_account(struct pdb_methods *m,
+					struct samu *sampass)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_update_sam_account(struct pdb_methods *m,
+					   struct samu *sam)
+{
+	struct pdb_ads_state *state = talloc_get_type_abort(
+		m->private_data, struct pdb_ads_state);
+	struct pdb_ads_samu_private *priv = pdb_ads_get_samu_private(m, sam);
+	struct tldap_mod *mods = NULL;
+	int rc, num_mods = 0;
+
+	if (!pdb_ads_init_ads_from_sam(state, priv->ldapmsg, talloc_tos(),
+				       &num_mods, &mods, sam)) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	rc = tldap_modify(state->ld, priv->dn, num_mods, mods, NULL, NULL);
+	if (rc != TLDAP_SUCCESS) {
+		DEBUG(10, ("ldap_modify for %s failed: %s\n", priv->dn,
+			   tldap_errstr(debug_ctx(), state->ld, rc)));
+		return NT_STATUS_LDAP(rc);
+	}
+
+	TALLOC_FREE(mods);
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS pdb_ads_delete_sam_account(struct pdb_methods *m,
+					   struct samu *username)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_rename_sam_account(struct pdb_methods *m,
+					   struct samu *oldname,
+					   const char *newname)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_update_login_attempts(struct pdb_methods *m,
+					      struct samu *sam_acct,
+					      bool success)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_getgrsid(struct pdb_methods *m, GROUP_MAP *map,
+				 DOM_SID sid)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_getgrgid(struct pdb_methods *m, GROUP_MAP *map,
+				 gid_t gid)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_getgrnam(struct pdb_methods *m, GROUP_MAP *map,
+				 const char *name)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_create_dom_group(struct pdb_methods *m,
+					 TALLOC_CTX *mem_ctx, const char *name,
+					 uint32 *rid)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_delete_dom_group(struct pdb_methods *m,
+					 TALLOC_CTX *mem_ctx, uint32 rid)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_add_group_mapping_entry(struct pdb_methods *m,
+						GROUP_MAP *map)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_update_group_mapping_entry(struct pdb_methods *m,
+						   GROUP_MAP *map)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_delete_group_mapping_entry(struct pdb_methods *m,
+						   DOM_SID sid)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_enum_group_mapping(struct pdb_methods *m,
+					   const DOM_SID *sid,
+					   enum lsa_SidType sid_name_use,
+					   GROUP_MAP **pp_rmap,
+					   size_t *p_num_entries,
+					   bool unix_only)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_enum_group_members(struct pdb_methods *m,
+					   TALLOC_CTX *mem_ctx,
+					   const DOM_SID *group,
+					   uint32 **pp_member_rids,
+					   size_t *p_num_members)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_enum_group_memberships(struct pdb_methods *m,
+					       TALLOC_CTX *mem_ctx,
+					       struct samu *user,
+					       DOM_SID **pp_sids,
+					       gid_t **pp_gids,
+					       size_t *p_num_groups)
+{
+	struct pdb_ads_state *state = talloc_get_type_abort(
+		m->private_data, struct pdb_ads_state);
+	struct pdb_ads_samu_private *priv = pdb_ads_get_samu_private(
+		m, user);
+	const char *attrs[1] = { "objectSid" };
+	struct tldap_message **groups;
+	int i, rc, count;
+	size_t num_groups;
+	struct dom_sid *group_sids;
+	gid_t *gids;
+
+	rc = tldap_search_fmt(
+		state->ld, state->domaindn, TLDAP_SCOPE_SUB,
+		attrs, ARRAY_SIZE(attrs), 0, talloc_tos(), &groups,
+		"(&(member=%s)(grouptype=%d)(objectclass=group))",
+		priv->dn, GTYPE_SECURITY_GLOBAL_GROUP);
+	if (rc != TLDAP_SUCCESS) {
+		DEBUG(10, ("ldap_search failed %s\n",
+			   tldap_errstr(debug_ctx(), state->ld, rc)));
+		return NT_STATUS_LDAP(rc);
+	}
+
+	count = talloc_array_length(groups);
+
+	group_sids = talloc_array(mem_ctx, struct dom_sid, count);
+	if (group_sids == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	gids = talloc_array(mem_ctx, gid_t, count);
+	if (gids == NULL) {
+		TALLOC_FREE(group_sids);
+		return NT_STATUS_NO_MEMORY;
+	}
+	num_groups = 0;
+
+	for (i=0; i<count; i++) {
+		if (!tldap_pull_binsid(groups[i], "objectSid",
+				       &group_sids[num_groups])) {
+			continue;
+		}
+		gids[num_groups] = pdb_ads_sid2gid(&group_sids[num_groups]);
+
+		num_groups += 1;
+		if (num_groups == count) {
+			break;
+		}
+	}
+
+	*pp_sids = group_sids;
+	*pp_gids = gids;
+	*p_num_groups = num_groups;
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS pdb_ads_set_unix_primary_group(struct pdb_methods *m,
+					       TALLOC_CTX *mem_ctx,
+					       struct samu *user)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_add_groupmem(struct pdb_methods *m,
+				     TALLOC_CTX *mem_ctx,
+				     uint32 group_rid, uint32 member_rid)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_del_groupmem(struct pdb_methods *m,
+				     TALLOC_CTX *mem_ctx,
+				     uint32 group_rid, uint32 member_rid)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_create_alias(struct pdb_methods *m,
+				     const char *name, uint32 *rid)
+{
+	TALLOC_CTX *frame = talloc_stackframe();
+	struct pdb_ads_state *state = talloc_get_type_abort(
+		m->private_data, struct pdb_ads_state);
+	const char *attrs[1] = { "objectSid" };
+	int num_mods = 0;
+	struct tldap_mod *mods = NULL;
+	struct tldap_message **alias;
+	struct dom_sid sid;
+	char *dn;
+	int rc;
+	bool ok = true;
+
+	dn = talloc_asprintf(talloc_tos(), "cn=%s,cn=users,%s", name,
+			     state->domaindn);
+	if (dn == NULL) {
+		TALLOC_FREE(frame);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	ok &= tldap_make_mod_fmt(
+		NULL, talloc_tos(), &num_mods, &mods, "samAccountName", "%s",
+		name);
+	ok &= tldap_make_mod_fmt(
+		NULL, talloc_tos(), &num_mods, &mods, "objectClass", "group");
+	ok &= tldap_make_mod_fmt(
+		NULL, talloc_tos(), &num_mods, &mods, "groupType",
+		"%d", (int)GTYPE_SECURITY_DOMAIN_LOCAL_GROUP);
+
+	if (!ok) {
+		TALLOC_FREE(frame);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	rc = tldap_add(state->ld, dn, num_mods, mods, NULL, NULL);
+	if (rc != TLDAP_SUCCESS) {
+		DEBUG(10, ("ldap_add failed %s\n",
+			   tldap_errstr(debug_ctx(), state->ld, rc)));
+		TALLOC_FREE(frame);
+		return NT_STATUS_LDAP(rc);
+	}
+
+	rc = tldap_search_fmt(
+		state->ld, state->domaindn, TLDAP_SCOPE_SUB,
+		attrs, ARRAY_SIZE(attrs), 0, talloc_tos(), &alias,
+		"(&(objectclass=group)(samaccountname=%s))", name);
+	if (rc != TLDAP_SUCCESS) {
+		DEBUG(10, ("Could not find just created alias %s: %s\n",
+			   name, tldap_errstr(debug_ctx(), state->ld, rc)));
+		TALLOC_FREE(frame);
+		return NT_STATUS_LDAP(rc);
+	}
+
+	if (talloc_array_length(alias) != 1) {
+		DEBUG(10, ("Got %d alias, expected one\n",
+			   (int)talloc_array_length(alias)));
+		TALLOC_FREE(frame);
+		return NT_STATUS_LDAP(rc);
+	}
+
+	if (!tldap_pull_binsid(alias[0], "objectSid", &sid)) {
+		DEBUG(10, ("Could not fetch objectSid from alias %s\n",
+			   name));
+		TALLOC_FREE(frame);
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	sid_peek_rid(&sid, rid);
+	TALLOC_FREE(frame);
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS pdb_ads_delete_alias(struct pdb_methods *m,
+				     const DOM_SID *sid)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_get_aliasinfo(struct pdb_methods *m,
+				      const DOM_SID *sid,
+				      struct acct_info *info)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_set_aliasinfo(struct pdb_methods *m,
+				      const DOM_SID *sid,
+				      struct acct_info *info)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_add_aliasmem(struct pdb_methods *m,
+				     const DOM_SID *alias,
+				     const DOM_SID *member)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_del_aliasmem(struct pdb_methods *m,
+				     const DOM_SID *alias,
+				     const DOM_SID *member)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_enum_aliasmem(struct pdb_methods *m,
+				      const DOM_SID *alias, DOM_SID **members,
+				      size_t *p_num_members)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_enum_alias_memberships(struct pdb_methods *m,
+					       TALLOC_CTX *mem_ctx,
+					       const DOM_SID *domain_sid,
+					       const DOM_SID *members,
+					       size_t num_members,
+					       uint32 **pp_alias_rids,
+					       size_t *p_num_alias_rids)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_lookup_rids(struct pdb_methods *m,
+				    const DOM_SID *domain_sid,
+				    int num_rids,
+				    uint32 *rids,
+				    const char **pp_names,
+				    enum lsa_SidType *attrs)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_lookup_names(struct pdb_methods *m,
+				     const DOM_SID *domain_sid,
+				     int num_names,
+				     const char **pp_names,
+				     uint32 *rids,
+				     enum lsa_SidType *attrs)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS pdb_ads_get_account_policy(struct pdb_methods *m,
+					   int policy_index, uint32 *value)
+{
+	return account_policy_get(policy_index, value)
+		? NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
+}
+
+static NTSTATUS pdb_ads_set_account_policy(struct pdb_methods *m,
+					   int policy_index, uint32 value)
+{
+	return account_policy_set(policy_index, value)
+		? NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
+}
+
+static NTSTATUS pdb_ads_get_seq_num(struct pdb_methods *m,
+				    time_t *seq_num)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+struct pdb_ads_search_state {
+	uint32_t acct_flags;
+	struct samr_displayentry *entries;
+	uint32_t num_entries;
+	ssize_t array_size;
+	uint32_t current;
+};
+
+static bool pdb_ads_next_entry(struct pdb_search *search,
+			       struct samr_displayentry *entry)
+{
+	struct pdb_ads_search_state *state = talloc_get_type_abort(
+		search->private_data, struct pdb_ads_search_state);
+
+	if (state->current == state->num_entries) {
+		return false;
+	}
+
+	entry->idx = state->entries[state->current].idx;
+	entry->rid = state->entries[state->current].rid;
+	entry->acct_flags = state->entries[state->current].acct_flags;
+
+	entry->account_name = talloc_strdup(
+		search, state->entries[state->current].account_name);
+	entry->fullname = talloc_strdup(
+		search, state->entries[state->current].fullname);
+	entry->description = talloc_strdup(
+		search, state->entries[state->current].description);
+
+	if ((entry->account_name == NULL) || (entry->fullname == NULL)
+	    || (entry->description == NULL)) {
+		DEBUG(0, ("talloc_strdup failed\n"));
+		return false;
+	}
+
+	state->current += 1;
+	return true;
+}
+
+static void pdb_ads_search_end(struct pdb_search *search)
+{
+	struct pdb_ads_search_state *state = talloc_get_type_abort(
+		search->private_data, struct pdb_ads_search_state);
+	TALLOC_FREE(state);
+}
+
+static bool pdb_ads_search_users(struct pdb_methods *m,
+				 struct pdb_search *search,
+				 uint32 acct_flags)
+{
+	struct pdb_ads_state *state = talloc_get_type_abort(
+		m->private_data, struct pdb_ads_state);
+	struct pdb_ads_search_state *sstate;
+	const char * attrs[] = { "objectSid", "sAMAccountName",
+				 "userAccountControl" };
+	struct tldap_message **users;
+	int i, rc, num_users;
+
+	sstate = talloc_zero(search, struct pdb_ads_search_state);
+	if (sstate == NULL) {
+		return false;
+	}
+	sstate->acct_flags = acct_flags;
+
+	rc = tldap_search_fmt(
+		state->ld, state->domaindn, TLDAP_SCOPE_SUB,
+		attrs, ARRAY_SIZE(attrs), 0, talloc_tos(), &users,
+		"(objectclass=user)");
+	if (rc != TLDAP_SUCCESS) {
+		DEBUG(10, ("ldap_search_ext_s failed: %s\n",
+			   tldap_errstr(debug_ctx(), state->ld, rc)));
+		return false;
+	}
+
+	num_users = talloc_array_length(users);
+
+	sstate->entries = talloc_array(sstate, struct samr_displayentry,
+				       num_users);
+	if (sstate->entries == NULL) {
+		DEBUG(10, ("talloc failed\n"));
+		return false;
+	}
+
+	sstate->num_entries = 0;
+
+	for (i=0; i<num_users; i++) {
+		struct samr_displayentry *e;
+		struct dom_sid sid;
+
+		e = &sstate->entries[sstate->num_entries];
+
+		e->idx = sstate->num_entries;
+		if (!tldap_pull_binsid(users[i], "objectSid", &sid)) {
+			DEBUG(10, ("Could not pull sid\n"));
+			continue;
+		}
+		sid_peek_rid(&sid, &e->rid);
+		e->acct_flags = ACB_NORMAL;
+		e->account_name = "Name";
+		e->fullname = "Full Name";
+		e->description = "Beschreibung";
+
+		sstate->num_entries += 1;
+		if (sstate->num_entries >= num_users) {
+			break;
+		}
+	}
+
+	search->private_data = sstate;
+	search->next_entry = pdb_ads_next_entry;
+	search->search_end = pdb_ads_search_end;
+	return true;
+}
+
+static bool pdb_ads_search_groups(struct pdb_methods *m,
+				  struct pdb_search *search)
+{
+	return false;
+}
+
+static bool pdb_ads_search_aliases(struct pdb_methods *m,
+				   struct pdb_search *search,
+				   const DOM_SID *sid)
+{
+	return false;
+}
+
+static bool pdb_ads_uid_to_rid(struct pdb_methods *m, uid_t uid,
+			       uint32 *rid)
+{
+	return false;
+}
+
+static bool pdb_ads_uid_to_sid(struct pdb_methods *m, uid_t uid,
+			       DOM_SID *sid)
+{
+	return false;
+}
+
+static bool pdb_ads_gid_to_sid(struct pdb_methods *m, gid_t gid,
+			       DOM_SID *sid)
+{
+	return false;
+}
+
+static bool pdb_ads_sid_to_id(struct pdb_methods *m, const DOM_SID *sid,
+			      union unid_t *id, enum lsa_SidType *type)
+{
+	struct pdb_ads_state *state = talloc_get_type_abort(
+		m->private_data, struct pdb_ads_state);
+	struct tldap_message **msg;
+	char *sidstr;
+	uint32_t rid;
+	int rc;
+
+	/*
+	 * This is a big, big hack: Just hard-code the rid as uid/gid.
+	 */
+
+	sid_peek_rid(sid, &rid);
+
+	sidstr = sid_binstring(talloc_tos(), sid);
+	if (sidstr == NULL) {
+		return false;
+	}
+
+	rc = tldap_search_fmt(
+		state->ld, state->domaindn, TLDAP_SCOPE_SUB,
+		NULL, 0, 0, talloc_tos(), &msg,
+		"(&(objectsid=%s)(objectclass=user))", sidstr);
+	if ((rc == TLDAP_SUCCESS) && (talloc_array_length(msg) > 0)) {
+		id->uid = rid;
+		*type = SID_NAME_USER;
+		TALLOC_FREE(sidstr);
+		return true;
+	}
+
+	rc = tldap_search_fmt(
+		state->ld, state->domaindn, TLDAP_SCOPE_SUB,
+		NULL, 0, 0, talloc_tos(), &msg,
+		"(&(objectsid=%s)(objectclass=group))", sidstr);
+	if ((rc == TLDAP_SUCCESS) && (talloc_array_length(msg) > 0)) {
+		id->gid = rid;
+		*type = SID_NAME_DOM_GRP;
+		TALLOC_FREE(sidstr);
+		return true;
+	}
+
+	TALLOC_FREE(sidstr);
+	return false;
+}
+
+static bool pdb_ads_rid_algorithm(struct pdb_methods *m)
+{
+	return false;
+}
+
+static bool pdb_ads_new_rid(struct pdb_methods *m, uint32 *rid)
+{
+	return false;
+}
+
+static bool pdb_ads_get_trusteddom_pw(struct pdb_methods *m,
+				      const char *domain, char** pwd,
+				      DOM_SID *sid,
+				      time_t *pass_last_set_time)
+{
+	return false;
+}
+
+static bool pdb_ads_set_trusteddom_pw(struct pdb_methods *m,
+				      const char* domain, const char* pwd,
+				      const DOM_SID *sid)
+{
+	return false;
+}
+
+static bool pdb_ads_del_trusteddom_pw(struct pdb_methods *m,
+				      const char *domain)
+{
+	return false;
+}
+
+static NTSTATUS pdb_ads_enum_trusteddoms(struct pdb_methods *m,
+					 TALLOC_CTX *mem_ctx,
+					 uint32 *num_domains,
+					 struct trustdom_info ***domains)
+{
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static void pdb_ads_init_methods(struct pdb_methods *m)
+{
+	m->name = "ads";
+	m->getsampwnam = pdb_ads_getsampwnam;
+	m->getsampwsid = pdb_ads_getsampwsid;
+	m->create_user = pdb_ads_create_user;
+	m->delete_user = pdb_ads_delete_user;
+	m->add_sam_account = pdb_ads_add_sam_account;
+	m->update_sam_account = pdb_ads_update_sam_account;
+	m->delete_sam_account = pdb_ads_delete_sam_account;
+	m->rename_sam_account = pdb_ads_rename_sam_account;
+	m->update_login_attempts = pdb_ads_update_login_attempts;
+	m->getgrsid = pdb_ads_getgrsid;
+	m->getgrgid = pdb_ads_getgrgid;
+	m->getgrnam = pdb_ads_getgrnam;
+	m->create_dom_group = pdb_ads_create_dom_group;
+	m->delete_dom_group = pdb_ads_delete_dom_group;
+	m->add_group_mapping_entry = pdb_ads_add_group_mapping_entry;
+	m->update_group_mapping_entry = pdb_ads_update_group_mapping_entry;
+	m->delete_group_mapping_entry =	pdb_ads_delete_group_mapping_entry;
+	m->enum_group_mapping = pdb_ads_enum_group_mapping;
+	m->enum_group_members = pdb_ads_enum_group_members;
+	m->enum_group_memberships = pdb_ads_enum_group_memberships;
+	m->set_unix_primary_group = pdb_ads_set_unix_primary_group;
+	m->add_groupmem = pdb_ads_add_groupmem;
+	m->del_groupmem = pdb_ads_del_groupmem;
+	m->create_alias = pdb_ads_create_alias;
+	m->delete_alias = pdb_ads_delete_alias;
+	m->get_aliasinfo = pdb_ads_get_aliasinfo;
+	m->set_aliasinfo = pdb_ads_set_aliasinfo;
+	m->add_aliasmem = pdb_ads_add_aliasmem;
+	m->del_aliasmem = pdb_ads_del_aliasmem;
+	m->enum_aliasmem = pdb_ads_enum_aliasmem;
+	m->enum_alias_memberships = pdb_ads_enum_alias_memberships;
+	m->lookup_rids = pdb_ads_lookup_rids;
+	m->lookup_names = pdb_ads_lookup_names;
+	m->get_account_policy = pdb_ads_get_account_policy;
+	m->set_account_policy = pdb_ads_set_account_policy;
+	m->get_seq_num = pdb_ads_get_seq_num;
+	m->search_users = pdb_ads_search_users;
+	m->search_groups = pdb_ads_search_groups;
+	m->search_aliases = pdb_ads_search_aliases;
+	m->uid_to_rid = pdb_ads_uid_to_rid;
+	m->uid_to_sid = pdb_ads_uid_to_sid;
+	m->gid_to_sid = pdb_ads_gid_to_sid;
+	m->sid_to_id = pdb_ads_sid_to_id;
+	m->rid_algorithm = pdb_ads_rid_algorithm;
+	m->new_rid = pdb_ads_new_rid;
+	m->get_trusteddom_pw = pdb_ads_get_trusteddom_pw;
+	m->set_trusteddom_pw = pdb_ads_set_trusteddom_pw;
+	m->del_trusteddom_pw = pdb_ads_del_trusteddom_pw;
+	m->enum_trusteddoms = pdb_ads_enum_trusteddoms;
+}
+
+static void free_private_data(void **vp)
+{
+	struct pdb_ads_state *state = talloc_get_type_abort(
+		*vp, struct pdb_ads_state);
+
+	TALLOC_FREE(state->ld);
+	return;
+}
+
+static NTSTATUS pdb_ads_connect(struct pdb_ads_state *state,
+				const char *location)
+{
+	const char *rootdse_attrs[2] = {
+		"defaultNamingContext", "configurationNamingContext" };
+	const char *domain_attrs[1] = { "objectSid" };
+	const char *ncname_attrs[1] = { "netbiosname" };
+	struct tldap_message **rootdse, **domain, **ncname;
+	TALLOC_CTX *frame = talloc_stackframe();
+	struct sockaddr_un sunaddr;
+	NTSTATUS status;
+	int num_domains;
+	int fd, rc;
+
+	ZERO_STRUCT(sunaddr);
+	sunaddr.sun_family = AF_UNIX;
+	strncpy(sunaddr.sun_path, location, sizeof(sunaddr.sun_path) - 1);
+
+	status = open_socket_out((struct sockaddr_storage *)(void *)&sunaddr,
+				 0, 0, &fd);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(10, ("Could not connect to %s: %s\n", location,
+			   nt_errstr(status)));
+		goto done;
+	}
+
+	state->ld = tldap_context_create(state, fd);
+	if (state->ld == NULL) {
+		close(fd);
+		status = NT_STATUS_NO_MEMORY;
+		goto done;
+	}
+
+	rc = tldap_search_fmt(
+		state->ld, "", TLDAP_SCOPE_BASE,
+		rootdse_attrs, ARRAY_SIZE(rootdse_attrs), 0,
+		talloc_tos(), &rootdse, "(objectclass=*)");
+	if (rc != TLDAP_SUCCESS) {
+		DEBUG(10, ("Could not retrieve rootdse: %s\n",
+			   tldap_errstr(debug_ctx(), state->ld, rc)));
+		status = NT_STATUS_LDAP(rc);
+		goto done;
+	}
+	if (talloc_array_length(rootdse) != 1) {
+		status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+		goto done;
+	}
+
+	state->domaindn = tldap_talloc_single_attribute(
+		rootdse[0], "defaultNamingContext", state);
+	if (state->domaindn == NULL) {
+		DEBUG(10, ("Could not get defaultNamingContext\n"));
+		status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+		goto done;
+	}
+	DEBUG(10, ("defaultNamingContext = %s\n", state->domaindn));
+
+	state->configdn = tldap_talloc_single_attribute(
+		rootdse[0], "configurationNamingContext", state);
+	if (state->domaindn == NULL) {
+		DEBUG(10, ("Could not get configurationNamingContext\n"));
+		status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+		goto done;
+	}
+	DEBUG(10, ("configurationNamingContext = %s\n", state->configdn));
+
+	/*
+	 * Figure out our domain's SID
+	 */
+	rc = tldap_search_fmt(
+		state->ld, state->domaindn, TLDAP_SCOPE_BASE,
+		domain_attrs, ARRAY_SIZE(domain_attrs), 0,
+		talloc_tos(), &domain, "(objectclass=*)");
+	if (rc != TLDAP_SUCCESS) {
+		DEBUG(10, ("Could not retrieve domain: %s\n",
+			   tldap_errstr(debug_ctx(), state->ld, rc)));
+		status = NT_STATUS_LDAP(rc);
+		goto done;
+	}
+
+	num_domains = talloc_array_length(domain);
+	if (num_domains != 1) {
+		DEBUG(10, ("Got %d domains, expected one\n", num_domains));
+		status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+		goto done;
+	}
+	if (!tldap_pull_binsid(domain[0], "objectSid", &state->domainsid)) {
+		DEBUG(10, ("Could not retrieve domain SID\n"));
+		status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+		goto done;
+	}
+	DEBUG(10, ("Domain SID: %s\n", sid_string_dbg(&state->domainsid)));
+
+	/*
+	 * Figure out our domain's short name
+	 */
+	rc = tldap_search_fmt(
+		state->ld, state->configdn, TLDAP_SCOPE_SUB,
+		ncname_attrs, ARRAY_SIZE(ncname_attrs), 0,
+		talloc_tos(), &ncname, "(ncname=%s)", state->domaindn);
+	if (rc != TLDAP_SUCCESS) {
+		DEBUG(10, ("Could not retrieve ncname: %s\n",
+			   tldap_errstr(debug_ctx(), state->ld, rc)));
+		status = NT_STATUS_LDAP(rc);
+		goto done;
+	}
+	if (talloc_array_length(ncname) != 1) {
+		status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+		goto done;
+	}
+
+	state->netbiosname = tldap_talloc_single_attribute(
+		ncname[0], "netbiosname", state);
+	if (state->netbiosname == NULL) {
+		DEBUG(10, ("Could not get netbiosname\n"));
+		status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+		goto done;
+	}
+	DEBUG(10, ("netbiosname: %s\n", state->netbiosname));
+
+	if (!strequal(lp_workgroup(), state->netbiosname)) {
+		DEBUG(1, ("ADS is different domain (%s) than ours (%s)\n",
+			  state->netbiosname, lp_workgroup()));
+		status = NT_STATUS_NO_SUCH_DOMAIN;
+		goto done;
+	}
+
+	secrets_store_domain_sid(state->netbiosname, &state->domainsid);
+
+	status = NT_STATUS_OK;
+done:
+	TALLOC_FREE(frame);
+	return status;
+}
+
+static NTSTATUS pdb_init_ads(struct pdb_methods **pdb_method,
+			     const char *location)
+{
+	struct pdb_methods *m;
+	struct pdb_ads_state *state;
+	char *tmp = NULL;
+	NTSTATUS status;
+
+	m = talloc(talloc_autofree_context(), struct pdb_methods);
+	if (m == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	state = talloc(m, struct pdb_ads_state);
+	if (state == NULL) {
+		goto nomem;
+	}
+	m->private_data = state;
+	m->free_private_data = free_private_data;
+	pdb_ads_init_methods(m);
+
+	if (location == NULL) {
+		tmp = talloc_asprintf(talloc_tos(), "/%s/ldap_priv/ldapi",
+				      lp_private_dir());
+		location = tmp;
+	}
+	if (location == NULL) {
+		goto nomem;
+	}
+
+	status = pdb_ads_connect(state, location);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(10, ("pdb_ads_connect failed: %s\n", nt_errstr(status)));
+		goto fail;
+	}
+
+	*pdb_method = m;
+	return NT_STATUS_OK;
+nomem:
+	status = NT_STATUS_NO_MEMORY;
+fail:
+	TALLOC_FREE(m);
+	return status;
+}
+
+NTSTATUS pdb_ads_init(void);
+NTSTATUS pdb_ads_init(void)
+{
+	return smb_register_passdb(PASSDB_INTERFACE_VERSION, "ads",
+				   pdb_init_ads);
+}