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9f449915 PP |
1 | /* |
2 | * filter-visitor-ir-normalize-glob-patterns.c | |
3 | * | |
4 | * LTTng filter IR normalize string | |
5 | * | |
6 | * Copyright 2017 - Philippe Proulx <pproulx@efficios.com> | |
7 | * | |
8 | * This library is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU Lesser General Public License, version 2.1 only, | |
10 | * as published by the Free Software Foundation. | |
11 | * | |
12 | * This library is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public License | |
18 | * along with this library; if not, write to the Free Software Foundation, | |
19 | * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | #include <stdio.h> | |
23 | #include <unistd.h> | |
24 | #include <string.h> | |
25 | #include <stdlib.h> | |
26 | #include <assert.h> | |
27 | #include <errno.h> | |
28 | #include <inttypes.h> | |
29 | ||
30 | #include <common/macros.h> | |
31 | #include <common/string-utils/string-utils.h> | |
32 | ||
33 | #include "filter-ast.h" | |
34 | #include "filter-parser.h" | |
35 | #include "filter-ir.h" | |
36 | ||
37 | static | |
38 | int normalize_glob_patterns(struct ir_op *node) | |
39 | { | |
40 | switch (node->op) { | |
41 | case IR_OP_UNKNOWN: | |
42 | default: | |
43 | fprintf(stderr, "[error] %s: unknown op type\n", __func__); | |
44 | return -EINVAL; | |
45 | ||
46 | case IR_OP_ROOT: | |
47 | return normalize_glob_patterns(node->u.root.child); | |
48 | case IR_OP_LOAD: | |
49 | { | |
50 | if (node->data_type == IR_DATA_STRING) { | |
51 | enum ir_load_string_type type = | |
52 | node->u.load.u.string.type; | |
53 | if (type == IR_LOAD_STRING_TYPE_GLOB_STAR_END || | |
54 | type == IR_LOAD_STRING_TYPE_GLOB_STAR) { | |
55 | assert(node->u.load.u.string.value); | |
56 | strutils_normalize_star_glob_pattern( | |
57 | node->u.load.u.string.value); | |
58 | } | |
59 | } | |
60 | ||
61 | return 0; | |
62 | } | |
63 | case IR_OP_UNARY: | |
64 | return normalize_glob_patterns(node->u.unary.child); | |
65 | case IR_OP_BINARY: | |
66 | { | |
67 | int ret = normalize_glob_patterns(node->u.binary.left); | |
68 | ||
69 | if (ret) | |
70 | return ret; | |
71 | return normalize_glob_patterns(node->u.binary.right); | |
72 | } | |
73 | case IR_OP_LOGICAL: | |
74 | { | |
75 | int ret; | |
76 | ||
77 | ret = normalize_glob_patterns(node->u.logical.left); | |
78 | if (ret) | |
79 | return ret; | |
80 | return normalize_glob_patterns(node->u.logical.right); | |
81 | } | |
82 | } | |
83 | } | |
84 | ||
85 | /* | |
86 | * This function normalizes all the globbing literal strings with | |
87 | * utils_normalize_glob_pattern(). See the documentation of | |
88 | * utils_normalize_glob_pattern() for more details. | |
89 | */ | |
90 | LTTNG_HIDDEN | |
91 | int filter_visitor_ir_normalize_glob_patterns(struct filter_parser_ctx *ctx) | |
92 | { | |
93 | return normalize_glob_patterns(ctx->ir_root); | |
94 | } |