r25568: move idmap related functions into their own file.

the final goal is to have 3 child dispatch tables
'domain', 'idmap' and 'locator' instead of one.

metze
(This used to be commit 97c63f1b95190f3bcc1d9f34765934c97ffb720c)

1 files changed, 778 insertions, 0 deletions

diff --git a/source3/winbindd/winbindd_idmap.c b/source3/winbindd/winbindd_idmap.c
new file mode 100644
index 00000000000..3ae88c4c5d4
--- /dev/null
+++ b/source3/winbindd/winbindd_idmap.c
@@ -0,0 +1,778 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Async helpers for blocking functions
+
+   Copyright (C) Volker Lendecke 2005
+   Copyright (C) Gerald Carter 2006
+
+   The helpers always consist of three functions:
+
+   * A request setup function that takes the necessary parameters together
+     with a continuation function that is to be called upon completion
+
+   * A private continuation function that is internal only. This is to be
+     called by the lower-level functions in do_async(). Its only task is to
+     properly call the continuation function named above.
+
+   * A worker function that is called inside the appropriate child process.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "winbindd.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_WINBIND
+
+static void winbindd_set_mapping_recv(TALLOC_CTX *mem_ctx, BOOL success,
+				   struct winbindd_response *response,
+				   void *c, void *private_data)
+{
+	void (*cont)(void *priv, BOOL succ) = (void (*)(void *, BOOL))c;
+
+	if (!success) {
+		DEBUG(5, ("Could not trigger idmap_set_mapping\n"));
+		cont(private_data, False);
+		return;
+	}
+
+	if (response->result != WINBINDD_OK) {
+		DEBUG(5, ("idmap_set_mapping returned an error\n"));
+		cont(private_data, False);
+		return;
+	}
+
+	cont(private_data, True);
+}
+
+void winbindd_set_mapping_async(TALLOC_CTX *mem_ctx, const struct id_map *map,
+			     void (*cont)(void *private_data, BOOL success),
+			     void *private_data)
+{
+	struct winbindd_request request;
+	ZERO_STRUCT(request);
+	request.cmd = WINBINDD_DUAL_SET_MAPPING;
+	request.data.dual_idmapset.id = map->xid.id;
+	request.data.dual_idmapset.type = map->xid.type;
+	sid_to_string(request.data.dual_idmapset.sid, map->sid);
+
+	do_async(mem_ctx, idmap_child(), &request, winbindd_set_mapping_recv,
+		 (void *)cont, private_data);
+}
+
+enum winbindd_result winbindd_dual_set_mapping(struct winbindd_domain *domain,
+					    struct winbindd_cli_state *state)
+{
+	struct id_map map;
+	DOM_SID sid;
+	NTSTATUS result;
+
+	DEBUG(3, ("[%5lu]: dual_idmapset\n", (unsigned long)state->pid));
+
+	if (!string_to_sid(&sid, state->request.data.dual_idmapset.sid))
+		return WINBINDD_ERROR;
+
+	map.sid = &sid;
+	map.xid.id = state->request.data.dual_idmapset.id;
+	map.xid.type = state->request.data.dual_idmapset.type;
+	map.status = ID_MAPPED;
+
+	result = idmap_set_mapping(&map);
+	return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
+}
+
+static void winbindd_set_hwm_recv(TALLOC_CTX *mem_ctx, BOOL success,
+				   struct winbindd_response *response,
+				   void *c, void *private_data)
+{
+	void (*cont)(void *priv, BOOL succ) = (void (*)(void *, BOOL))c;
+
+	if (!success) {
+		DEBUG(5, ("Could not trigger idmap_set_hwm\n"));
+		cont(private_data, False);
+		return;
+	}
+
+	if (response->result != WINBINDD_OK) {
+		DEBUG(5, ("idmap_set_hwm returned an error\n"));
+		cont(private_data, False);
+		return;
+	}
+
+	cont(private_data, True);
+}
+
+void winbindd_set_hwm_async(TALLOC_CTX *mem_ctx, const struct unixid *xid,
+			     void (*cont)(void *private_data, BOOL success),
+			     void *private_data)
+{
+	struct winbindd_request request;
+	ZERO_STRUCT(request);
+	request.cmd = WINBINDD_DUAL_SET_HWM;
+	request.data.dual_idmapset.id = xid->id;
+	request.data.dual_idmapset.type = xid->type;
+
+	do_async(mem_ctx, idmap_child(), &request, winbindd_set_hwm_recv,
+		 (void *)cont, private_data);
+}
+
+enum winbindd_result winbindd_dual_set_hwm(struct winbindd_domain *domain,
+					    struct winbindd_cli_state *state)
+{
+	struct unixid xid;
+	NTSTATUS result;
+
+	DEBUG(3, ("[%5lu]: dual_set_hwm\n", (unsigned long)state->pid));
+
+	xid.id = state->request.data.dual_idmapset.id;
+	xid.type = state->request.data.dual_idmapset.type;
+
+	switch (xid.type) {
+	case ID_TYPE_UID:
+		result = idmap_set_uid_hwm(&xid);
+		break;
+	case ID_TYPE_GID:
+		result = idmap_set_gid_hwm(&xid);
+		break;
+	default:
+		return WINBINDD_ERROR;
+	}
+	return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
+}
+
+static void winbindd_sids2xids_recv(TALLOC_CTX *mem_ctx, BOOL success,
+			       struct winbindd_response *response,
+			       void *c, void *private_data)
+{
+	void (*cont)(void *priv, BOOL succ, void *, int) =
+		(void (*)(void *, BOOL, void *, int))c;
+
+	if (!success) {
+		DEBUG(5, ("Could not trigger sids2xids\n"));
+		cont(private_data, False, NULL, 0);
+		return;
+	}
+
+	if (response->result != WINBINDD_OK) {
+		DEBUG(5, ("sids2xids returned an error\n"));
+		cont(private_data, False, NULL, 0);
+		return;
+	}
+
+	cont(private_data, True, response->extra_data.data, response->length - sizeof(response));
+}
+
+void winbindd_sids2xids_async(TALLOC_CTX *mem_ctx, void *sids, int size,
+			 void (*cont)(void *private_data, BOOL success, void *data, int len),
+			 void *private_data)
+{
+	struct winbindd_request request;
+	ZERO_STRUCT(request);
+	request.cmd = WINBINDD_DUAL_SIDS2XIDS;
+	request.extra_data.data = (char *)sids;
+	request.extra_len = size;
+	do_async(mem_ctx, idmap_child(), &request, winbindd_sids2xids_recv,
+		 (void *)cont, private_data);
+}
+
+enum winbindd_result winbindd_dual_sids2xids(struct winbindd_domain *domain,
+					   struct winbindd_cli_state *state)
+{
+	DOM_SID *sids;
+	struct unixid *xids;
+	struct id_map **ids;
+	NTSTATUS result;
+	int num, i;
+
+	DEBUG(3, ("[%5lu]: sids to unix ids\n", (unsigned long)state->pid));
+
+	if (state->request.extra_len == 0) {
+		DEBUG(0, ("Invalid buffer size!\n"));
+		return WINBINDD_ERROR;
+	}
+
+	sids = (DOM_SID *)state->request.extra_data.data;
+	num = state->request.extra_len / sizeof(DOM_SID);
+
+	ids = TALLOC_ZERO_ARRAY(state->mem_ctx, struct id_map *, num + 1);
+	if ( ! ids) {
+		DEBUG(0, ("Out of memory!\n"));
+		return WINBINDD_ERROR;
+	}
+	for (i = 0; i < num; i++) {
+		ids[i] = TALLOC_P(ids, struct id_map);
+		if ( ! ids[i]) {
+			DEBUG(0, ("Out of memory!\n"));
+			talloc_free(ids);
+			return WINBINDD_ERROR;
+		}
+		ids[i]->sid = &sids[i];
+	}
+
+	result = idmap_sids_to_unixids(ids);
+
+	if (NT_STATUS_IS_OK(result)) {
+
+		xids = SMB_MALLOC_ARRAY(struct unixid, num);
+		if ( ! xids) {
+			DEBUG(0, ("Out of memory!\n"));
+			talloc_free(ids);
+			return WINBINDD_ERROR;
+		}
+
+		for (i = 0; i < num; i++) {
+			if (ids[i]->status == ID_MAPPED) {
+				xids[i].type = ids[i]->xid.type;
+				xids[i].id = ids[i]->xid.id;
+			} else {
+				xids[i].type = -1;
+			}
+		}
+
+		state->response.length = sizeof(state->response) + (sizeof(struct unixid) * num);
+		state->response.extra_data.data = xids;
+
+	} else {
+		DEBUG (2, ("idmap_sids_to_unixids returned an error: 0x%08x\n", NT_STATUS_V(result)));
+		talloc_free(ids);
+		return WINBINDD_ERROR;
+	}
+
+	talloc_free(ids);
+	return WINBINDD_OK;
+}
+
+static void winbindd_sid2uid_recv(TALLOC_CTX *mem_ctx, BOOL success,
+			       struct winbindd_response *response,
+			       void *c, void *private_data)
+{
+	void (*cont)(void *priv, BOOL succ, uid_t uid) =
+		(void (*)(void *, BOOL, uid_t))c;
+
+	if (!success) {
+		DEBUG(5, ("Could not trigger sid2uid\n"));
+		cont(private_data, False, 0);
+		return;
+	}
+
+	if (response->result != WINBINDD_OK) {
+		DEBUG(5, ("sid2uid returned an error\n"));
+		cont(private_data, False, 0);
+		return;
+	}
+
+	cont(private_data, True, response->data.uid);
+}
+
+void winbindd_sid2uid_async(TALLOC_CTX *mem_ctx, const DOM_SID *sid,
+			 void (*cont)(void *private_data, BOOL success, uid_t uid),
+			 void *private_data)
+{
+	struct winbindd_request request;
+	ZERO_STRUCT(request);
+	request.cmd = WINBINDD_DUAL_SID2UID;
+	sid_to_string(request.data.dual_sid2id.sid, sid);
+	do_async(mem_ctx, idmap_child(), &request, winbindd_sid2uid_recv,
+		 (void *)cont, private_data);
+}
+
+enum winbindd_result winbindd_dual_sid2uid(struct winbindd_domain *domain,
+					   struct winbindd_cli_state *state)
+{
+	DOM_SID sid;
+	NTSTATUS result;
+
+	DEBUG(3, ("[%5lu]: sid to uid %s\n", (unsigned long)state->pid,
+		  state->request.data.dual_sid2id.sid));
+
+	if (!string_to_sid(&sid, state->request.data.dual_sid2id.sid)) {
+		DEBUG(1, ("Could not get convert sid %s from string\n",
+			  state->request.data.dual_sid2id.sid));
+		return WINBINDD_ERROR;
+	}
+
+	/* Find uid for this sid and return it, possibly ask the slow remote idmap */
+
+	result = idmap_sid_to_uid(&sid, &(state->response.data.uid));
+
+	return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
+}
+
+#if 0	/* not used */
+static void uid2name_recv(TALLOC_CTX *mem_ctx, BOOL success,
+			  struct winbindd_response *response,
+			  void *c, void *private_data);
+
+void winbindd_uid2name_async(TALLOC_CTX *mem_ctx, uid_t uid,
+			     void (*cont)(void *private_data, BOOL success,
+					  const char *name),
+			     void *private_data)
+{
+	struct winbindd_request request;
+	ZERO_STRUCT(request);
+	request.cmd = WINBINDD_DUAL_UID2NAME;
+	request.data.uid = uid;
+	do_async(mem_ctx, idmap_child(), &request, uid2name_recv,
+		 (void *)cont, private_data);
+}
+#endif	/* not used */
+
+enum winbindd_result winbindd_dual_uid2name(struct winbindd_domain *domain,
+					    struct winbindd_cli_state *state)
+{
+	struct passwd *pw;
+
+	DEBUG(3, ("[%5lu]: uid2name %lu\n", (unsigned long)state->pid,
+		  (unsigned long)state->request.data.uid));
+
+	pw = getpwuid(state->request.data.uid);
+	if (pw == NULL) {
+		DEBUG(5, ("User %lu not found\n",
+			  (unsigned long)state->request.data.uid));
+		return WINBINDD_ERROR;
+	}
+
+	fstrcpy(state->response.data.name.name, pw->pw_name);
+	return WINBINDD_OK;
+}
+
+#if 0	/* not used */
+static void uid2name_recv(TALLOC_CTX *mem_ctx, BOOL success,
+			  struct winbindd_response *response,
+			  void *c, void *private_data)
+{
+	void (*cont)(void *priv, BOOL succ, const char *name) =
+		(void (*)(void *, BOOL, const char *))c;
+
+	if (!success) {
+		DEBUG(5, ("Could not trigger uid2name\n"));
+		cont(private_data, False, NULL);
+		return;
+	}
+
+	if (response->result != WINBINDD_OK) {
+		DEBUG(5, ("uid2name returned an error\n"));
+		cont(private_data, False, NULL);
+		return;
+	}
+
+	cont(private_data, True, response->data.name.name);
+}
+
+static void name2uid_recv(TALLOC_CTX *mem_ctx, BOOL success,
+			  struct winbindd_response *response,
+			  void *c, void *private_data);
+
+static void winbindd_name2uid_async(TALLOC_CTX *mem_ctx, const char *name,
+				    void (*cont)(void *private_data, BOOL success,
+						 uid_t uid),
+				    void *private_data)
+{
+	struct winbindd_request request;
+	ZERO_STRUCT(request);
+	request.cmd = WINBINDD_DUAL_NAME2UID;
+	fstrcpy(request.data.username, name);
+	do_async(mem_ctx, idmap_child(), &request, name2uid_recv,
+		 (void *)cont, private_data);
+}
+#endif	/* not used */
+
+enum winbindd_result winbindd_dual_name2uid(struct winbindd_domain *domain,
+					    struct winbindd_cli_state *state)
+{
+	struct passwd *pw;
+
+	/* Ensure null termination */
+	state->request.data.username
+		[sizeof(state->request.data.username)-1] = '\0';
+
+	DEBUG(3, ("[%5lu]: name2uid %s\n", (unsigned long)state->pid,
+		  state->request.data.username));
+
+	pw = getpwnam(state->request.data.username);
+	if (pw == NULL) {
+		return WINBINDD_ERROR;
+	}
+
+	state->response.data.uid = pw->pw_uid;
+	return WINBINDD_OK;
+}
+
+#if 0	/* not used */
+static void name2uid_recv(TALLOC_CTX *mem_ctx, BOOL success,
+			  struct winbindd_response *response,
+			  void *c, void *private_data)
+{
+	void (*cont)(void *priv, BOOL succ, uid_t uid) =
+		(void (*)(void *, BOOL, uid_t))c;
+
+	if (!success) {
+		DEBUG(5, ("Could not trigger name2uid\n"));
+		cont(private_data, False, 0);
+		return;
+	}
+
+	if (response->result != WINBINDD_OK) {
+		DEBUG(5, ("name2uid returned an error\n"));
+		cont(private_data, False, 0);
+		return;
+	}
+
+	cont(private_data, True, response->data.uid);
+}
+#endif	/* not used */
+
+static void winbindd_sid2gid_recv(TALLOC_CTX *mem_ctx, BOOL success,
+			       struct winbindd_response *response,
+			       void *c, void *private_data)
+{
+	void (*cont)(void *priv, BOOL succ, gid_t gid) =
+		(void (*)(void *, BOOL, gid_t))c;
+
+	if (!success) {
+		DEBUG(5, ("Could not trigger sid2gid\n"));
+		cont(private_data, False, 0);
+		return;
+	}
+
+	if (response->result != WINBINDD_OK) {
+		DEBUG(5, ("sid2gid returned an error\n"));
+		cont(private_data, False, 0);
+		return;
+	}
+
+	cont(private_data, True, response->data.gid);
+}
+
+void winbindd_sid2gid_async(TALLOC_CTX *mem_ctx, const DOM_SID *sid,
+			 void (*cont)(void *private_data, BOOL success, gid_t gid),
+			 void *private_data)
+{
+	struct winbindd_request request;
+	ZERO_STRUCT(request);
+	request.cmd = WINBINDD_DUAL_SID2GID;
+	sid_to_string(request.data.dual_sid2id.sid, sid);
+
+	DEBUG(7,("winbindd_sid2gid_async: Resolving %s to a gid\n",
+		request.data.dual_sid2id.sid));
+
+	do_async(mem_ctx, idmap_child(), &request, winbindd_sid2gid_recv,
+		 (void *)cont, private_data);
+}
+
+enum winbindd_result winbindd_dual_sid2gid(struct winbindd_domain *domain,
+					   struct winbindd_cli_state *state)
+{
+	DOM_SID sid;
+	NTSTATUS result;
+
+	DEBUG(3, ("[%5lu]: sid to gid %s\n", (unsigned long)state->pid,
+		  state->request.data.dual_sid2id.sid));
+
+	if (!string_to_sid(&sid, state->request.data.dual_sid2id.sid)) {
+		DEBUG(1, ("Could not get convert sid %s from string\n",
+			  state->request.data.dual_sid2id.sid));
+		return WINBINDD_ERROR;
+	}
+
+	/* Find gid for this sid and return it, possibly ask the slow remote idmap */
+
+	result = idmap_sid_to_gid(&sid, &state->response.data.gid);
+
+	DEBUG(10, ("winbindd_dual_sid2gid: 0x%08x - %s - %u\n", NT_STATUS_V(result), sid_string_static(&sid), state->response.data.gid));
+
+	return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
+}
+
+static void gid2name_recv(TALLOC_CTX *mem_ctx, BOOL success,
+			  struct winbindd_response *response,
+			  void *c, void *private_data)
+{
+	void (*cont)(void *priv, BOOL succ, const char *name) =
+		(void (*)(void *, BOOL, const char *))c;
+
+	if (!success) {
+		DEBUG(5, ("Could not trigger gid2name\n"));
+		cont(private_data, False, NULL);
+		return;
+	}
+
+	if (response->result != WINBINDD_OK) {
+		DEBUG(5, ("gid2name returned an error\n"));
+		cont(private_data, False, NULL);
+		return;
+	}
+
+	cont(private_data, True, response->data.name.name);
+}
+
+void winbindd_gid2name_async(TALLOC_CTX *mem_ctx, gid_t gid,
+			     void (*cont)(void *private_data, BOOL success,
+					  const char *name),
+			     void *private_data)
+{
+	struct winbindd_request request;
+	ZERO_STRUCT(request);
+	request.cmd = WINBINDD_DUAL_GID2NAME;
+	request.data.gid = gid;
+	do_async(mem_ctx, idmap_child(), &request, gid2name_recv,
+		 (void *)cont, private_data);
+}
+
+enum winbindd_result winbindd_dual_gid2name(struct winbindd_domain *domain,
+					    struct winbindd_cli_state *state)
+{
+	struct group *gr;
+
+	DEBUG(3, ("[%5lu]: gid2name %lu\n", (unsigned long)state->pid,
+		  (unsigned long)state->request.data.gid));
+
+	gr = getgrgid(state->request.data.gid);
+	if (gr == NULL)
+		return WINBINDD_ERROR;
+
+	fstrcpy(state->response.data.name.name, gr->gr_name);
+	return WINBINDD_OK;
+}
+
+#if 0	/* not used */
+static void name2gid_recv(TALLOC_CTX *mem_ctx, BOOL success,
+			  struct winbindd_response *response,
+			  void *c, void *private_data);
+
+static void winbindd_name2gid_async(TALLOC_CTX *mem_ctx, const char *name,
+				    void (*cont)(void *private_data, BOOL success,
+						 gid_t gid),
+				    void *private_data)
+{
+	struct winbindd_request request;
+	ZERO_STRUCT(request);
+	request.cmd = WINBINDD_DUAL_NAME2GID;
+	fstrcpy(request.data.groupname, name);
+	do_async(mem_ctx, idmap_child(), &request, name2gid_recv,
+		 (void *)cont, private_data);
+}
+#endif	/* not used */
+
+enum winbindd_result winbindd_dual_name2gid(struct winbindd_domain *domain,
+					    struct winbindd_cli_state *state)
+{
+	struct group *gr;
+
+	/* Ensure null termination */
+	state->request.data.groupname
+		[sizeof(state->request.data.groupname)-1] = '\0';
+
+	DEBUG(3, ("[%5lu]: name2gid %s\n", (unsigned long)state->pid,
+		  state->request.data.groupname));
+
+	gr = getgrnam(state->request.data.groupname);
+	if (gr == NULL) {
+		return WINBINDD_ERROR;
+	}
+
+	state->response.data.gid = gr->gr_gid;
+	return WINBINDD_OK;
+}
+
+#if 0	/* not used */
+static void name2gid_recv(TALLOC_CTX *mem_ctx, BOOL success,
+			  struct winbindd_response *response,
+			  void *c, void *private_data)
+{
+	void (*cont)(void *priv, BOOL succ, gid_t gid) =
+		(void (*)(void *, BOOL, gid_t))c;
+
+	if (!success) {
+		DEBUG(5, ("Could not trigger name2gid\n"));
+		cont(private_data, False, 0);
+		return;
+	}
+
+	if (response->result != WINBINDD_OK) {
+		DEBUG(5, ("name2gid returned an error\n"));
+		cont(private_data, False, 0);
+		return;
+	}
+
+	cont(private_data, True, response->data.gid);
+}
+#endif	/* not used */
+
+/* The following uid2sid/gid2sid functions has been contributed by
+ * Keith Reynolds <Keith.Reynolds@centrify.com> */
+
+static void winbindd_uid2sid_recv(TALLOC_CTX *mem_ctx, BOOL success,
+				  struct winbindd_response *response,
+				  void *c, void *private_data)
+{
+	void (*cont)(void *priv, BOOL succ, const char *sid) =
+		(void (*)(void *, BOOL, const char *))c;
+
+	if (!success) {
+		DEBUG(5, ("Could not trigger uid2sid\n"));
+		cont(private_data, False, NULL);
+		return;
+	}
+
+	if (response->result != WINBINDD_OK) {
+		DEBUG(5, ("uid2sid returned an error\n"));
+		cont(private_data, False, NULL);
+		return;
+	}
+
+	cont(private_data, True, response->data.sid.sid);
+}
+
+void winbindd_uid2sid_async(TALLOC_CTX *mem_ctx, uid_t uid,
+			    void (*cont)(void *private_data, BOOL success, const char *sid),
+			    void *private_data)
+{
+	struct winbindd_request request;
+
+	ZERO_STRUCT(request);
+	request.cmd = WINBINDD_DUAL_UID2SID;
+	request.data.uid = uid;
+	do_async(mem_ctx, idmap_child(), &request, winbindd_uid2sid_recv,
+		 (void *)cont, private_data);
+}
+
+enum winbindd_result winbindd_dual_uid2sid(struct winbindd_domain *domain,
+					   struct winbindd_cli_state *state)
+{
+	DOM_SID sid;
+	NTSTATUS result;
+
+	DEBUG(3,("[%5lu]: uid to sid %lu\n",
+		 (unsigned long)state->pid,
+		 (unsigned long) state->request.data.uid));
+
+	/* Find sid for this uid and return it, possibly ask the slow remote idmap */
+	result = idmap_uid_to_sid(&sid, state->request.data.uid);
+
+	if (NT_STATUS_IS_OK(result)) {
+		sid_to_string(state->response.data.sid.sid, &sid);
+		state->response.data.sid.type = SID_NAME_USER;
+		return WINBINDD_OK;
+	}
+
+	return WINBINDD_ERROR;
+}
+
+static void winbindd_gid2sid_recv(TALLOC_CTX *mem_ctx, BOOL success,
+				  struct winbindd_response *response,
+				  void *c, void *private_data)
+{
+	void (*cont)(void *priv, BOOL succ, const char *sid) =
+		(void (*)(void *, BOOL, const char *))c;
+
+	if (!success) {
+		DEBUG(5, ("Could not trigger gid2sid\n"));
+		cont(private_data, False, NULL);
+		return;
+	}
+
+	if (response->result != WINBINDD_OK) {
+		DEBUG(5, ("gid2sid returned an error\n"));
+		cont(private_data, False, NULL);
+		return;
+	}
+
+	cont(private_data, True, response->data.sid.sid);
+}
+
+void winbindd_gid2sid_async(TALLOC_CTX *mem_ctx, gid_t gid,
+			    void (*cont)(void *private_data, BOOL success, const char *sid),
+			    void *private_data)
+{
+	struct winbindd_request request;
+
+	ZERO_STRUCT(request);
+	request.cmd = WINBINDD_DUAL_GID2SID;
+	request.data.gid = gid;
+	do_async(mem_ctx, idmap_child(), &request, winbindd_gid2sid_recv,
+		 (void *)cont, private_data);
+}
+
+enum winbindd_result winbindd_dual_gid2sid(struct winbindd_domain *domain,
+					   struct winbindd_cli_state *state)
+{
+	DOM_SID sid;
+	NTSTATUS result;
+
+	DEBUG(3,("[%5lu]: gid %lu to sid\n",
+		(unsigned long)state->pid,
+		(unsigned long) state->request.data.gid));
+
+	/* Find sid for this gid and return it, possibly ask the slow remote idmap */
+	result = idmap_gid_to_sid(&sid, state->request.data.gid);
+
+	if (NT_STATUS_IS_OK(result)) {
+		sid_to_string(state->response.data.sid.sid, &sid);
+		DEBUG(10, ("[%5lu]: retrieved sid: %s\n",
+			   (unsigned long)state->pid,
+			   state->response.data.sid.sid));
+		state->response.data.sid.type = SID_NAME_DOM_GRP;
+		return WINBINDD_OK;
+	}
+
+	return WINBINDD_ERROR;
+}
+
+static void winbindd_dump_id_maps_recv(TALLOC_CTX *mem_ctx, BOOL success,
+			       struct winbindd_response *response,
+			       void *c, void *private_data)
+{
+	void (*cont)(void *priv, BOOL succ) =
+		(void (*)(void *, BOOL))c;
+
+	if (!success) {
+		DEBUG(5, ("Could not trigger a map dump\n"));
+		cont(private_data, False);
+		return;
+	}
+
+	if (response->result != WINBINDD_OK) {
+		DEBUG(5, ("idmap dump maps returned an error\n"));
+		cont(private_data, False);
+		return;
+	}
+
+	cont(private_data, True);
+}
+
+void winbindd_dump_maps_async(TALLOC_CTX *mem_ctx, void *data, int size,
+			 void (*cont)(void *private_data, BOOL success),
+			 void *private_data)
+{
+	struct winbindd_request request;
+	ZERO_STRUCT(request);
+	request.cmd = WINBINDD_DUAL_DUMP_MAPS;
+	request.extra_data.data = (char *)data;
+	request.extra_len = size;
+	do_async(mem_ctx, idmap_child(), &request, winbindd_dump_id_maps_recv,
+		 (void *)cont, private_data);
+}
+
+enum winbindd_result winbindd_dual_dump_maps(struct winbindd_domain *domain,
+					   struct winbindd_cli_state *state)
+{
+	DEBUG(3, ("[%5lu]: dual dump maps\n", (unsigned long)state->pid));
+
+	idmap_dump_maps((char *)state->request.extra_data.data);
+
+	return WINBINDD_OK;
+}