+++ /dev/null
-/*
- * filter-visitor-ir-validate-string.c
- *
- * LTTng filter IR validate string
- *
- * Copyright 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
- *
- * SPDX-License-Identifier: LGPL-2.1-only
- *
- */
-
-#include <stdio.h>
-#include <unistd.h>
-#include <string.h>
-#include <stdlib.h>
-#include <assert.h>
-#include <errno.h>
-#include <inttypes.h>
-
-#include <common/macros.h>
-
-#include "filter-ast.h"
-#include "filter-parser.h"
-#include "filter-ir.h"
-
-enum parse_char_result {
- PARSE_CHAR_UNKNOWN = -2,
- PARSE_CHAR_WILDCARD = -1,
- PARSE_CHAR_NORMAL = 0,
-};
-
-static
-enum parse_char_result parse_char(const char **p)
-{
- switch (**p) {
- case '\\':
- (*p)++;
- switch (**p) {
- case '\\':
- case '*':
- return PARSE_CHAR_NORMAL;
- default:
- return PARSE_CHAR_UNKNOWN;
- }
- case '*':
- return PARSE_CHAR_WILDCARD;
- default:
- return PARSE_CHAR_NORMAL;
- }
-}
-
-static
-int validate_string(struct ir_op *node)
-{
- switch (node->op) {
- case IR_OP_UNKNOWN:
- default:
- fprintf(stderr, "[error] %s: unknown op type\n", __func__);
- return -EINVAL;
-
- case IR_OP_ROOT:
- return validate_string(node->u.root.child);
- case IR_OP_LOAD:
- {
- int ret = 0;
-
- if (node->data_type == IR_DATA_STRING) {
- const char *str;
-
- assert(node->u.load.u.string.value);
- str = node->u.load.u.string.value;
-
- for (;;) {
- enum parse_char_result res;
-
- if (!(*str)) {
- break;
- }
-
- res = parse_char(&str);
- str++;
-
- switch (res) {
- case PARSE_CHAR_UNKNOWN:
- ret = -EINVAL;
- fprintf(stderr,
- "Unsupported escape character detected.\n");
- goto end_load;
- case PARSE_CHAR_NORMAL:
- default:
- break;
- }
- }
- }
-end_load:
- return ret;
- }
- case IR_OP_UNARY:
- return validate_string(node->u.unary.child);
- case IR_OP_BINARY:
- {
- int ret = validate_string(node->u.binary.left);
-
- if (ret)
- return ret;
- return validate_string(node->u.binary.right);
- }
- case IR_OP_LOGICAL:
- {
- int ret;
-
- ret = validate_string(node->u.logical.left);
- if (ret)
- return ret;
- return validate_string(node->u.logical.right);
- }
- }
-}
-
-LTTNG_HIDDEN
-int filter_visitor_ir_validate_string(struct filter_parser_ctx *ctx)
-{
- return validate_string(ctx->ir_root);
-}