ldb_controls.c

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			p = &(control_strings[i][12]);
			ret = sscanf(p, "%d:%d", &crit, &type);
			if ((ret != 2) || (crit < 0) || (crit > 1) || (type < 0) || (type > 1)) {
				ret = sscanf(p, "%d", &crit);
				if ((ret != 1) || (crit < 0) || (crit > 1)) {
					error_string = talloc_asprintf(mem_ctx, "invalid extended_dn control syntax\n");
					error_string = talloc_asprintf_append(error_string, " syntax: crit(b)[:type(i)]\n");
					error_string = talloc_asprintf_append(error_string, "   note: b = boolean\n");
					error_string = talloc_asprintf_append(error_string, "         i = integer\n");
					error_string = talloc_asprintf_append(error_string, "   valid values are: 0 - hexadecimal representation\n");
					error_string = talloc_asprintf_append(error_string, "                     1 - normal string representation");
					ldb_set_errstring(ldb, error_string);
					talloc_free(error_string);
					return NULL;
				}
				control = NULL;
			} else {
				control = talloc(ctrl, struct ldb_extended_dn_control);
				control->type = type;
			}

			ctrl[i] = talloc(ctrl, struct ldb_control);
			if (!ctrl[i]) {
				ldb_oom(ldb);
				return NULL;
			}
			ctrl[i]->oid = LDB_CONTROL_EXTENDED_DN_OID;
			ctrl[i]->critical = crit;
			ctrl[i]->data = talloc_steal(ctrl[i], control);

			continue;
		}

		if (strncmp(control_strings[i], "sd_flags:", 9) == 0) {
			struct ldb_sd_flags_control *control;
			const char *p;
			int crit, ret;
			unsigned secinfo_flags;

			p = &(control_strings[i][9]);
			ret = sscanf(p, "%d:%u", &crit, &secinfo_flags);
			if ((ret != 2) || (crit < 0) || (crit > 1) || (secinfo_flags < 0) || (secinfo_flags > 0xF)) {
				error_string = talloc_asprintf(mem_ctx, "invalid sd_flags control syntax\n");
				error_string = talloc_asprintf_append(error_string, " syntax: crit(b):secinfo_flags(n)\n");
				error_string = talloc_asprintf_append(error_string, "   note: b = boolean, n = number");
				ldb_set_errstring(ldb, error_string);
				talloc_free(error_string);
				return NULL;
			}

			ctrl[i] = talloc(ctrl, struct ldb_control);
			if (!ctrl[i]) {
				ldb_oom(ldb);
				return NULL;
			}
			ctrl[i]->oid = LDB_CONTROL_SD_FLAGS_OID;
			ctrl[i]->critical = crit;
			control = talloc(ctrl[i], struct ldb_sd_flags_control);
			control->secinfo_flags = secinfo_flags;
			ctrl[i]->data = control;

			continue;
		}

		if (strncmp(control_strings[i], "search_options:", 15) == 0) {
			struct ldb_search_options_control *control;
			const char *p;
			int crit, ret;
			unsigned search_options;

			p = &(control_strings[i][15]);
			ret = sscanf(p, "%d:%u", &crit, &search_options);
			if ((ret != 2) || (crit < 0) || (crit > 1) || (search_options < 0) || (search_options > 0xF)) {
				error_string = talloc_asprintf(mem_ctx, "invalid search_options control syntax\n");
				error_string = talloc_asprintf_append(error_string, " syntax: crit(b):search_options(n)\n");
				error_string = talloc_asprintf_append(error_string, "   note: b = boolean, n = number");
				ldb_set_errstring(ldb, error_string);
				talloc_free(error_string);
				return NULL;
			}

			ctrl[i] = talloc(ctrl, struct ldb_control);
			if (!ctrl[i]) {
				ldb_oom(ldb);
				return NULL;
			}
			ctrl[i]->oid = LDB_CONTROL_SEARCH_OPTIONS_OID;
			ctrl[i]->critical = crit;
			control = talloc(ctrl[i], struct ldb_search_options_control);
			control->search_options = search_options;
			ctrl[i]->data = control;

			continue;
		}

		if (strncmp(control_strings[i], "domain_scope:", 13) == 0) {
			const char *p;
			int crit, ret;

			p = &(control_strings[i][13]);
			ret = sscanf(p, "%d", &crit);
			if ((ret != 1) || (crit < 0) || (crit > 1)) {
				error_string = talloc_asprintf(mem_ctx, "invalid domain_scope control syntax\n");
				error_string = talloc_asprintf_append(error_string, " syntax: crit(b)\n");
				error_string = talloc_asprintf_append(error_string, "   note: b = boolean");
				ldb_set_errstring(ldb, error_string);
				talloc_free(error_string);
				return NULL;
			}

			ctrl[i] = talloc(ctrl, struct ldb_control);
			if (!ctrl[i]) {
				ldb_oom(ldb);
				return NULL;
			}
			ctrl[i]->oid = LDB_CONTROL_DOMAIN_SCOPE_OID;
			ctrl[i]->critical = crit;
			ctrl[i]->data = NULL;

			continue;
		}

		if (strncmp(control_strings[i], "paged_results:", 14) == 0) {
			struct ldb_paged_control *control;
			const char *p;
			int crit, size, ret;
		       
			p = &(control_strings[i][14]);
			ret = sscanf(p, "%d:%d", &crit, &size);

			if ((ret != 2) || (crit < 0) || (crit > 1) || (size < 0)) {
				error_string = talloc_asprintf(mem_ctx, "invalid paged_results control syntax\n");
				error_string = talloc_asprintf_append(error_string, " syntax: crit(b):size(n)\n");
				error_string = talloc_asprintf_append(error_string, "   note: b = boolean, n = number");
				ldb_set_errstring(ldb, error_string);
				talloc_free(error_string);
				return NULL;
			}

			ctrl[i] = talloc(ctrl, struct ldb_control);
			if (!ctrl[i]) {
				ldb_oom(ldb);
				return NULL;
			}
			ctrl[i]->oid = LDB_CONTROL_PAGED_RESULTS_OID;
			ctrl[i]->critical = crit;
			control = talloc(ctrl[i], struct ldb_paged_control);
			control->size = size;
			control->cookie = NULL;
			control->cookie_len = 0;
			ctrl[i]->data = control;

			continue;
		}

		if (strncmp(control_strings[i], "server_sort:", 12) == 0) {
			struct ldb_server_sort_control **control;
			const char *p;
			char attr[256];
			char rule[128];
			int crit, rev, ret;

			attr[0] = '\0';
			rule[0] = '\0';
			p = &(control_strings[i][12]);
			ret = sscanf(p, "%d:%d:%255[^:]:%127[^:]", &crit, &rev, attr, rule);
			if ((ret < 3) || (crit < 0) || (crit > 1) || (rev < 0 ) || (rev > 1) ||attr[0] == '\0') {
				error_string = talloc_asprintf(mem_ctx, "invalid server_sort control syntax\n");
				error_string = talloc_asprintf_append(error_string, " syntax: crit(b):rev(b):attr(s)[:rule(s)]\n");
				error_string = talloc_asprintf_append(error_string, "   note: b = boolean, s = string");
				ldb_set_errstring(ldb, error_string);
				talloc_free(error_string);
				return NULL;
			}
			ctrl[i] = talloc(ctrl, struct ldb_control);
			if (!ctrl[i]) {
				ldb_oom(ldb);
				return NULL;
			}
			ctrl[i]->oid = LDB_CONTROL_SERVER_SORT_OID;
			ctrl[i]->critical = crit;
			control = talloc_array(ctrl[i], struct ldb_server_sort_control *, 2);
			control[0] = talloc(control, struct ldb_server_sort_control);
			control[0]->attributeName = talloc_strdup(control, attr);
			if (rule[0])
				control[0]->orderingRule = talloc_strdup(control, rule);
			else
				control[0]->orderingRule = NULL;
			control[0]->reverse = rev;
			control[1] = NULL;
			ctrl[i]->data = control;

			continue;
		}

		if (strncmp(control_strings[i], "notification:", 13) == 0) {
			const char *p;
			int crit, ret;

			p = &(control_strings[i][13]);
			ret = sscanf(p, "%d", &crit);
			if ((ret != 1) || (crit < 0) || (crit > 1)) {
				error_string = talloc_asprintf(mem_ctx, "invalid notification control syntax\n");
				error_string = talloc_asprintf_append(error_string, " syntax: crit(b)\n");
				error_string = talloc_asprintf_append(error_string, "   note: b = boolean");
				ldb_set_errstring(ldb, error_string);
				talloc_free(error_string);
				return NULL;
			}

			ctrl[i] = talloc(ctrl, struct ldb_control);
			if (!ctrl[i]) {
				ldb_oom(ldb);
				return NULL;
			}
			ctrl[i]->oid = LDB_CONTROL_NOTIFICATION_OID;
			ctrl[i]->critical = crit;
			ctrl[i]->data = NULL;

			continue;
		}

		if (strncmp(control_strings[i], "show_deleted:", 13) == 0) {
			const char *p;
			int crit, ret;

			p = &(control_strings[i][13]);
			ret = sscanf(p, "%d", &crit);
			if ((ret != 1) || (crit < 0) || (crit > 1)) {
				error_string = talloc_asprintf(mem_ctx, "invalid show_deleted control syntax\n");
				error_string = talloc_asprintf_append(error_string, " syntax: crit(b)\n");
				error_string = talloc_asprintf_append(error_string, "   note: b = boolean");
				ldb_set_errstring(ldb, error_string);
				talloc_free(error_string);
				return NULL;
			}

			ctrl[i] = talloc(ctrl, struct ldb_control);
			if (!ctrl[i]) {
				ldb_oom(ldb);
				return NULL;
			}
			ctrl[i]->oid = LDB_CONTROL_SHOW_DELETED_OID;
			ctrl[i]->critical = crit;
			ctrl[i]->data = NULL;

			continue;
		}

		if (strncmp(control_strings[i], "permissive_modify:", 18) == 0) {
			const char *p;
			int crit, ret;

			p = &(control_strings[i][18]);
			ret = sscanf(p, "%d", &crit);
			if ((ret != 1) || (crit < 0) || (crit > 1)) {
				error_string = talloc_asprintf(mem_ctx, "invalid permissive_modify control syntax\n");
				error_string = talloc_asprintf_append(error_string, " syntax: crit(b)\n");
				error_string = talloc_asprintf_append(error_string, "   note: b = boolean");
				ldb_set_errstring(ldb, error_string);
				talloc_free(error_string);
				return NULL;
			}

			ctrl[i] = talloc(ctrl, struct ldb_control);
			if (!ctrl[i]) {
				ldb_oom(ldb);
				return NULL;
			}
			ctrl[i]->oid = LDB_CONTROL_PERMISSIVE_MODIFY_OID;
			ctrl[i]->critical = crit;
			ctrl[i]->data = NULL;

			continue;
		}

		/* no controls matched, throw an error */
		ldb_asprintf_errstring(ldb, "Invalid control name: '%s'", control_strings[i]);
		return NULL;
	}

	ctrl[i] = NULL;

	return ctrl;
}