Пример #1
0
static NTSTATUS idmap_ldap_sids_to_unixids(struct idmap_domain *dom,
					   struct id_map **ids)
{
	LDAPMessage *entry = NULL;
	NTSTATUS ret;
	TALLOC_CTX *memctx;
	struct idmap_ldap_context *ctx;
	LDAPMessage *result = NULL;
	const char *uidNumber;
	const char *gidNumber;
	const char **attr_list;
	char *filter = NULL;
	bool multi = False;
	int idx = 0;
	int bidx = 0;
	int count;
	int rc;
	int i;

	/* Only do query if we are online */
	if (idmap_is_offline())	{
		return NT_STATUS_FILE_IS_OFFLINE;
	}

	ctx = talloc_get_type(dom->private_data, struct idmap_ldap_context);

	memctx = talloc_new(ctx);
	if ( ! memctx) {
		DEBUG(0, ("Out of memory!\n"));
		return NT_STATUS_NO_MEMORY;
	}

	uidNumber = get_attr_key2string(idpool_attr_list, LDAP_ATTR_UIDNUMBER);
	gidNumber = get_attr_key2string(idpool_attr_list, LDAP_ATTR_GIDNUMBER);

	attr_list = get_attr_list(memctx, sidmap_attr_list);

	if ( ! ids[1]) {
		/* if we are requested just one mapping use the simple filter */

		filter = talloc_asprintf(memctx, "(&(objectClass=%s)(%s=%s))",
				LDAP_OBJ_IDMAP_ENTRY,
				LDAP_ATTRIBUTE_SID,
				sid_string_talloc(memctx, ids[0]->sid));
		CHECK_ALLOC_DONE(filter);
		DEBUG(10, ("Filter: [%s]\n", filter));
	} else {
		/* multiple mappings */
		multi = True;
	}

	for (i = 0; ids[i]; i++) {
		ids[i]->status = ID_UNKNOWN;
	}

again:
	if (multi) {

		TALLOC_FREE(filter);
		filter = talloc_asprintf(memctx,
					 "(&(objectClass=%s)(|",
					 LDAP_OBJ_IDMAP_ENTRY);
		CHECK_ALLOC_DONE(filter);

		bidx = idx;
		for (i = 0; (i < IDMAP_LDAP_MAX_IDS) && ids[idx]; i++, idx++) {
			filter = talloc_asprintf_append_buffer(filter, "(%s=%s)",
					LDAP_ATTRIBUTE_SID,
					sid_string_talloc(memctx,
							  ids[idx]->sid));
			CHECK_ALLOC_DONE(filter);
		}
		filter = talloc_asprintf_append_buffer(filter, "))");
		CHECK_ALLOC_DONE(filter);
		DEBUG(10, ("Filter: [%s]", filter));
	} else {
		bidx = 0;
		idx = 1;
	}

	rc = smbldap_search(ctx->smbldap_state, ctx->suffix, LDAP_SCOPE_SUBTREE,
		filter, attr_list, 0, &result);

	if (rc != LDAP_SUCCESS) {
		DEBUG(3,("Failure looking up sids (%s)\n",
			 ldap_err2string(rc)));
		ret = NT_STATUS_UNSUCCESSFUL;
		goto done;
	}

	count = ldap_count_entries(ctx->smbldap_state->ldap_struct, result);

	if (count == 0) {
		DEBUG(10, ("NO SIDs found\n"));
	}

	for (i = 0; i < count; i++) {
		char *sidstr = NULL;
		char *tmp = NULL;
		enum id_type type;
		struct id_map *map;
		struct dom_sid sid;
		uint32_t id;

		if (i == 0) { /* first entry */
			entry = ldap_first_entry(ctx->smbldap_state->ldap_struct,
						 result);
		} else { /* following ones */
			entry = ldap_next_entry(ctx->smbldap_state->ldap_struct,
						entry);
		}
		if ( ! entry) {
			DEBUG(2, ("ERROR: Unable to fetch ldap entries "
				  "from results\n"));
			break;
		}

		/* first check if the SID is present */
		sidstr = smbldap_talloc_single_attribute(
				ctx->smbldap_state->ldap_struct,
				entry, LDAP_ATTRIBUTE_SID, memctx);
		if ( ! sidstr) { /* no sid ??, skip entry */
			DEBUG(2, ("WARNING SID not found on entry\n"));
			continue;
		}

		if ( ! string_to_sid(&sid, sidstr)) {
			DEBUG(2, ("ERROR: Invalid SID on entry\n"));
			TALLOC_FREE(sidstr);
			continue;
		}

		map = idmap_find_map_by_sid(&ids[bidx], &sid);
		if (!map) {
			DEBUG(2, ("WARNING: couldn't find entry sid (%s) "
				  "in ids", sidstr));
			TALLOC_FREE(sidstr);
			continue;
		}

		/* now try to see if it is a uid, if not try with a gid
		 * (gid is more common, but in case both uidNumber and
		 * gidNumber are returned the SID is mapped to the uid
		 * not the gid) */
		type = ID_TYPE_UID;
		tmp = smbldap_talloc_single_attribute(
				ctx->smbldap_state->ldap_struct,
				entry, uidNumber, memctx);
		if ( ! tmp) {
			type = ID_TYPE_GID;
			tmp = smbldap_talloc_single_attribute(
					ctx->smbldap_state->ldap_struct,
					entry, gidNumber, memctx);
		}
		if ( ! tmp) { /* no ids ?? */
			DEBUG(5, ("no uidNumber, "
				  "nor gidNumber attributes found\n"));
			TALLOC_FREE(sidstr);
			continue;
		}

		id = strtoul(tmp, NULL, 10);
		if (!idmap_unix_id_is_in_range(id, dom)) {
			DEBUG(5, ("Requested id (%u) out of range (%u - %u). "
				  "Filtered!\n", id,
				  dom->low_id, dom->high_id));
			TALLOC_FREE(sidstr);
			TALLOC_FREE(tmp);
			continue;
		}
		TALLOC_FREE(tmp);

		if (map->status == ID_MAPPED) {
			DEBUG(1, ("WARNING: duplicate %s mapping in LDAP. "
			      "overwriting mapping %s -> %u with %s -> %u\n",
			      (type == ID_TYPE_UID) ? "UID" : "GID",
			      sidstr, map->xid.id, sidstr, id));
		}

		TALLOC_FREE(sidstr);

		/* mapped */
		map->xid.type = type;
		map->xid.id = id;
		map->status = ID_MAPPED;

		DEBUG(10, ("Mapped %s -> %lu (%d)\n", sid_string_dbg(map->sid),
			   (unsigned long)map->xid.id, map->xid.type));
	}

	/* free the ldap results */
	if (result) {
		ldap_msgfree(result);
		result = NULL;
	}

	if (multi && ids[idx]) { /* still some values to map */
		goto again;
	}

	/*
	 *  try to create new mappings for unmapped sids
	 */
	for (i = 0; ids[i]; i++) {
		if (ids[i]->status != ID_MAPPED) {
			ids[i]->status = ID_UNMAPPED;
			if (ids[i]->sid != NULL) {
				ret = idmap_ldap_new_mapping(dom, ids[i]);
				if (!NT_STATUS_IS_OK(ret)) {
					goto done;
				}
			}
		}
	}

	ret = NT_STATUS_OK;

done:
	talloc_free(memctx);
	return ret;
}
Пример #2
0
static NTSTATUS idmap_ldap_allocate_id_internal(struct idmap_domain *dom,
						struct unixid *xid)
{
	TALLOC_CTX *mem_ctx;
	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
	int rc = LDAP_SERVER_DOWN;
	int count = 0;
	LDAPMessage *result = NULL;
	LDAPMessage *entry = NULL;
	LDAPMod **mods = NULL;
	char *id_str;
	char *new_id_str;
	char *filter = NULL;
	const char *dn = NULL;
	const char **attr_list;
	const char *type;
	struct idmap_ldap_context *ctx;

	/* Only do query if we are online */
	if (idmap_is_offline())	{
		return NT_STATUS_FILE_IS_OFFLINE;
	}

	ctx = talloc_get_type(dom->private_data, struct idmap_ldap_context);

	mem_ctx = talloc_new(ctx);
	if (!mem_ctx) {
		DEBUG(0, ("Out of memory!\n"));
		return NT_STATUS_NO_MEMORY;
	}

	/* get type */
	switch (xid->type) {

	case ID_TYPE_UID:
		type = get_attr_key2string(idpool_attr_list,
					   LDAP_ATTR_UIDNUMBER);
	       	break;

	case ID_TYPE_GID:
		type = get_attr_key2string(idpool_attr_list,
					   LDAP_ATTR_GIDNUMBER);
		break;

	default:
		DEBUG(2, ("Invalid ID type (0x%x)\n", xid->type));
		return NT_STATUS_INVALID_PARAMETER;
	}

	filter = talloc_asprintf(mem_ctx, "(objectClass=%s)", LDAP_OBJ_IDPOOL);
	CHECK_ALLOC_DONE(filter);

	attr_list = get_attr_list(mem_ctx, idpool_attr_list);
	CHECK_ALLOC_DONE(attr_list);

	DEBUG(10, ("Search of the id pool (filter: %s)\n", filter));

	rc = smbldap_search(ctx->smbldap_state,
			   ctx->suffix,
			   LDAP_SCOPE_SUBTREE, filter,
			   attr_list, 0, &result);

	if (rc != LDAP_SUCCESS) {
		DEBUG(0,("%s object not found\n", LDAP_OBJ_IDPOOL));
		goto done;
	}

	smbldap_talloc_autofree_ldapmsg(mem_ctx, result);

	count = ldap_count_entries(ctx->smbldap_state->ldap_struct, result);
	if (count != 1) {
		DEBUG(0,("Single %s object not found\n", LDAP_OBJ_IDPOOL));
		goto done;
	}

	entry = ldap_first_entry(ctx->smbldap_state->ldap_struct, result);

	dn = smbldap_talloc_dn(mem_ctx,
			       ctx->smbldap_state->ldap_struct,
			       entry);
	if ( ! dn) {
		goto done;
	}

	id_str = smbldap_talloc_single_attribute(
				ctx->smbldap_state->ldap_struct,
				entry, type, mem_ctx);
	if (id_str == NULL) {
		DEBUG(0,("%s attribute not found\n", type));
		ret = NT_STATUS_UNSUCCESSFUL;
		goto done;
	}

	xid->id = strtoul(id_str, NULL, 10);

	/* make sure we still have room to grow */

	switch (xid->type) {
	case ID_TYPE_UID:
		if (xid->id > dom->high_id) {
			DEBUG(0,("Cannot allocate uid above %lu!\n",
				 (unsigned long)dom->high_id));
			goto done;
		}
		break;

	case ID_TYPE_GID:
		if (xid->id > dom->high_id) {
			DEBUG(0,("Cannot allocate gid above %lu!\n",
				 (unsigned long)dom->high_id));
			goto done;
		}
		break;

	default:
		/* impossible */
		goto done;
	}

	new_id_str = talloc_asprintf(mem_ctx, "%lu", (unsigned long)xid->id + 1);
	if ( ! new_id_str) {
		DEBUG(0,("Out of memory\n"));
		ret = NT_STATUS_NO_MEMORY;
		goto done;
	}

	smbldap_set_mod(&mods, LDAP_MOD_DELETE, type, id_str);
	smbldap_set_mod(&mods, LDAP_MOD_ADD, type, new_id_str);

	if (mods == NULL) {
		DEBUG(0,("smbldap_set_mod() failed.\n"));
		goto done;
	}

	DEBUG(10, ("Try to atomically increment the id (%s -> %s)\n",
		   id_str, new_id_str));

	rc = smbldap_modify(ctx->smbldap_state, dn, mods);

	ldap_mods_free(mods, True);

	if (rc != LDAP_SUCCESS) {
		DEBUG(1,("Failed to allocate new %s. "
			 "smbldap_modify() failed.\n", type));
		goto done;
	}

	ret = NT_STATUS_OK;

done:
	talloc_free(mem_ctx);
	return ret;
}
Пример #3
0
static NTSTATUS idmap_ldap_set_hwm(struct unixid *xid)
{
	TALLOC_CTX *ctx;
	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
	int rc = LDAP_SERVER_DOWN;
	int count = 0;
	LDAPMessage *result = NULL;
	LDAPMessage *entry = NULL;
	LDAPMod **mods = NULL;
	char *new_id_str;
	char *filter = NULL;
	const char *dn = NULL;
	const char **attr_list;
	const char *type;

	/* Only do query if we are online */
	if (idmap_is_offline())	{
		return NT_STATUS_FILE_IS_OFFLINE;
	}

	if ( ! idmap_alloc_ldap) {
		return NT_STATUS_UNSUCCESSFUL;
	}

	ctx = talloc_new(idmap_alloc_ldap);
	if ( ! ctx) {
		DEBUG(0, ("Out of memory!\n"));
		return NT_STATUS_NO_MEMORY;
	}

	/* get type */
	switch (xid->type) {

	case ID_TYPE_UID:
		type = get_attr_key2string(idpool_attr_list,
					   LDAP_ATTR_UIDNUMBER);
	       	break;

	case ID_TYPE_GID:
		type = get_attr_key2string(idpool_attr_list,
					   LDAP_ATTR_GIDNUMBER);
		break;

	default:
		DEBUG(2, ("Invalid ID type (0x%x)\n", xid->type));
		return NT_STATUS_INVALID_PARAMETER;
	}

	filter = talloc_asprintf(ctx, "(objectClass=%s)", LDAP_OBJ_IDPOOL);
	CHECK_ALLOC_DONE(filter);

	attr_list = get_attr_list(ctx, idpool_attr_list);
	CHECK_ALLOC_DONE(attr_list);

	rc = smbldap_search(idmap_alloc_ldap->smbldap_state,
				idmap_alloc_ldap->suffix,
			       LDAP_SCOPE_SUBTREE, filter,
			       attr_list, 0, &result);

	if (rc != LDAP_SUCCESS) {
		DEBUG(0,("%s object not found\n", LDAP_OBJ_IDPOOL));
		goto done;
	}

	talloc_autofree_ldapmsg(ctx, result);

	count = ldap_count_entries(idmap_alloc_ldap->smbldap_state->ldap_struct,
				   result);
	if (count != 1) {
		DEBUG(0,("Single %s object not found\n", LDAP_OBJ_IDPOOL));
		goto done;
	}

	entry = ldap_first_entry(idmap_alloc_ldap->smbldap_state->ldap_struct,
				 result);

	dn = smbldap_talloc_dn(ctx,
				idmap_alloc_ldap->smbldap_state->ldap_struct,
				entry);
	if ( ! dn) {
		goto done;
	}

	new_id_str = talloc_asprintf(ctx, "%lu", (unsigned long)xid->id);
	if ( ! new_id_str) {
		DEBUG(0,("Out of memory\n"));
		ret = NT_STATUS_NO_MEMORY;
		goto done;
	}

	smbldap_set_mod(&mods, LDAP_MOD_REPLACE, type, new_id_str);

	if (mods == NULL) {
		DEBUG(0,("smbldap_set_mod() failed.\n"));
		goto done;
	}

	rc = smbldap_modify(idmap_alloc_ldap->smbldap_state, dn, mods);

	ldap_mods_free(mods, True);

	if (rc != LDAP_SUCCESS) {
		DEBUG(1,("Failed to allocate new %s. "
			 "smbldap_modify() failed.\n", type));
		goto done;
	}

	ret = NT_STATUS_OK;

done:
	talloc_free(ctx);
	return ret;
}
Пример #4
0
static NTSTATUS verify_idpool(struct idmap_domain *dom)
{
	NTSTATUS ret;
	TALLOC_CTX *mem_ctx;
	LDAPMessage *result = NULL;
	LDAPMod **mods = NULL;
	const char **attr_list;
	char *filter;
	int count;
	int rc;
	struct idmap_ldap_context *ctx;

	ctx = talloc_get_type(dom->private_data, struct idmap_ldap_context);

	mem_ctx = talloc_new(ctx);
	if (mem_ctx == NULL) {
		DEBUG(0, ("Out of memory!\n"));
		return NT_STATUS_NO_MEMORY;
	}

	filter = talloc_asprintf(mem_ctx, "(objectclass=%s)", LDAP_OBJ_IDPOOL);
	CHECK_ALLOC_DONE(filter);

	attr_list = get_attr_list(mem_ctx, idpool_attr_list);
	CHECK_ALLOC_DONE(attr_list);

	rc = smbldap_search(ctx->smbldap_state,
				ctx->suffix,
				LDAP_SCOPE_SUBTREE,
				filter,
				attr_list,
				0,
				&result);

	if (rc != LDAP_SUCCESS) {
		DEBUG(1, ("Unable to verify the idpool, "
			  "cannot continue initialization!\n"));
		return NT_STATUS_UNSUCCESSFUL;
	}

	count = ldap_count_entries(ctx->smbldap_state->ldap_struct, result);

	ldap_msgfree(result);

	if ( count > 1 ) {
		DEBUG(0,("Multiple entries returned from %s (base == %s)\n",
			filter, ctx->suffix));
		ret = NT_STATUS_UNSUCCESSFUL;
		goto done;
	}
	else if (count == 0) {
		char *uid_str, *gid_str;

		uid_str = talloc_asprintf(mem_ctx, "%lu",
				(unsigned long)dom->low_id);
		gid_str = talloc_asprintf(mem_ctx, "%lu",
				(unsigned long)dom->low_id);

		smbldap_set_mod(&mods, LDAP_MOD_ADD,
				"objectClass", LDAP_OBJ_IDPOOL);
		smbldap_set_mod(&mods, LDAP_MOD_ADD,
				get_attr_key2string(idpool_attr_list,
						    LDAP_ATTR_UIDNUMBER),
				uid_str);
		smbldap_set_mod(&mods, LDAP_MOD_ADD,
				get_attr_key2string(idpool_attr_list,
						    LDAP_ATTR_GIDNUMBER),
				gid_str);
		if (mods) {
			rc = smbldap_modify(ctx->smbldap_state,
						ctx->suffix,
						mods);
			ldap_mods_free(mods, True);
		} else {
			ret = NT_STATUS_UNSUCCESSFUL;
			goto done;
		}
	}

	ret = (rc == LDAP_SUCCESS)?NT_STATUS_OK:NT_STATUS_UNSUCCESSFUL;
done:
	talloc_free(mem_ctx);
	return ret;
}
Пример #5
0
static NTSTATUS idmap_ldap_get_hwm(struct unixid *xid)
{
	TALLOC_CTX *memctx;
	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
	int rc = LDAP_SERVER_DOWN;
	int count = 0;
	LDAPMessage *result = NULL;
	LDAPMessage *entry = NULL;
	char *id_str;
	char *filter = NULL;
	const char **attr_list;
	const char *type;

	/* Only do query if we are online */
	if (idmap_is_offline())	{
		return NT_STATUS_FILE_IS_OFFLINE;
	}

	if ( ! idmap_alloc_ldap) {
		return NT_STATUS_UNSUCCESSFUL;
	}

	memctx = talloc_new(idmap_alloc_ldap);
	if ( ! memctx) {
		DEBUG(0, ("Out of memory!\n"));
		return NT_STATUS_NO_MEMORY;
	}

	/* get type */
	switch (xid->type) {

	case ID_TYPE_UID:
		type = get_attr_key2string(idpool_attr_list,
					   LDAP_ATTR_UIDNUMBER);
	       	break;

	case ID_TYPE_GID:
		type = get_attr_key2string(idpool_attr_list,
					   LDAP_ATTR_GIDNUMBER);
		break;

	default:
		DEBUG(2, ("Invalid ID type (0x%x)\n", xid->type));
		return NT_STATUS_INVALID_PARAMETER;
	}

	filter = talloc_asprintf(memctx, "(objectClass=%s)", LDAP_OBJ_IDPOOL);
	CHECK_ALLOC_DONE(filter);

	attr_list = get_attr_list(memctx, idpool_attr_list);
	CHECK_ALLOC_DONE(attr_list);

	rc = smbldap_search(idmap_alloc_ldap->smbldap_state,
				idmap_alloc_ldap->suffix,
			       LDAP_SCOPE_SUBTREE, filter,
			       attr_list, 0, &result);

	if (rc != LDAP_SUCCESS) {
		DEBUG(0,("%s object not found\n", LDAP_OBJ_IDPOOL));
		goto done;
	}

	talloc_autofree_ldapmsg(memctx, result);

	count = ldap_count_entries(idmap_alloc_ldap->smbldap_state->ldap_struct,
				   result);
	if (count != 1) {
		DEBUG(0,("Single %s object not found\n", LDAP_OBJ_IDPOOL));
		goto done;
	}

	entry = ldap_first_entry(idmap_alloc_ldap->smbldap_state->ldap_struct,
				 result);

	id_str = smbldap_talloc_single_attribute(idmap_alloc_ldap->smbldap_state->ldap_struct,
			entry, type, memctx);
	if ( ! id_str) {
		DEBUG(0,("%s attribute not found\n", type));
		goto done;
	}
	if ( ! id_str) {
		DEBUG(0,("Out of memory\n"));
		ret = NT_STATUS_NO_MEMORY;
		goto done;
	}

	xid->id	= strtoul(id_str, NULL, 10);

	ret = NT_STATUS_OK;
done:
	talloc_free(memctx);
	return ret;
}