1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
/*
* encode-harness.c
* contributed by Mark Griffin
*/
#include <stdio.h>
#include "oniguruma.h"
#include <stdlib.h>
#include <string.h>
#define PARSE_DEPTH_LIMIT 120
#define RETRY_LIMIT 4000
typedef unsigned char uint8_t;
static int
search(regex_t* reg, unsigned char* str, unsigned char* end)
{
int r;
unsigned char *start, *range;
OnigRegion *region;
region = onig_region_new();
start = str;
range = end;
r = onig_search(reg, str, end, start, range, region, ONIG_OPTION_NONE);
if (r >= 0) {
int i;
fprintf(stdout, "match at %d (%s)\n", r,
ONIGENC_NAME(onig_get_encoding(reg)));
for (i = 0; i < region->num_regs; i++) {
fprintf(stdout, "%d: (%d-%d)\n", i, region->beg[i], region->end[i]);
}
}
else if (r == ONIG_MISMATCH) {
fprintf(stdout, "search fail (%s)\n",
ONIGENC_NAME(onig_get_encoding(reg)));
}
else { /* error */
char s[ONIG_MAX_ERROR_MESSAGE_LEN];
onig_error_code_to_str((UChar* )s, r);
fprintf(stdout, "ERROR: %s\n", s);
fprintf(stdout, " (%s)\n", ONIGENC_NAME(onig_get_encoding(reg)));
onig_region_free(region, 1 /* 1:free self, 0:free contents only */);
return -1;
}
onig_region_free(region, 1 /* 1:free self, 0:free contents only */);
return 0;
}
static int
exec(OnigEncoding enc, OnigOptionType options,
char* apattern, char* apattern_end, char* astr, UChar* end)
{
int r;
regex_t* reg;
OnigErrorInfo einfo;
UChar* pattern = (UChar* )apattern;
UChar* str = (UChar* )astr;
UChar* pattern_end = (UChar* )apattern_end;
onig_initialize(&enc, 1);
onig_set_retry_limit_in_match(RETRY_LIMIT);
onig_set_parse_depth_limit(PARSE_DEPTH_LIMIT);
r = onig_new(®, pattern, pattern_end,
options, enc, ONIG_SYNTAX_DEFAULT, &einfo);
if (r != ONIG_NORMAL) {
char s[ONIG_MAX_ERROR_MESSAGE_LEN];
onig_error_code_to_str((UChar* )s, r, &einfo);
fprintf(stdout, "ERROR: %s\n", s);
onig_end();
return -1;
}
if (onigenc_is_valid_mbc_string(enc, str, end) != 0) {
r = search(reg, str, end);
}
onig_free(reg);
onig_end();
return 0;
}
#define PATTERN_SIZE 32
#define NUM_CONTROL_BYTES 1
#define MIN_STR_SIZE 1
int LLVMFuzzerTestOneInput(const uint8_t * Data, size_t Size)
{
if (Size <= (NUM_CONTROL_BYTES + PATTERN_SIZE + MIN_STR_SIZE))
return 0;
if (Size > 0x1000)
return 0;
unsigned char *pattern_end;
unsigned char *str_null_end;
size_t remaining_size = Size;
unsigned char *data = (unsigned char *)(Data);
// pull off one byte to switch off
unsigned char encoding_choice = data[0];
data++;
remaining_size--;
// copy first PATTERN_SIZE bytes off to be the pattern
unsigned char *pattern = (unsigned char *)malloc(PATTERN_SIZE+4);
memset(pattern, 0, PATTERN_SIZE+4);
memcpy(pattern, data, PATTERN_SIZE);
pattern_end = pattern + PATTERN_SIZE;
data += PATTERN_SIZE;
remaining_size -= PATTERN_SIZE;
unsigned char *str = (unsigned char*)malloc(remaining_size+4);
memset(str, 0, remaining_size+4);
memcpy(str, data, remaining_size);
str_null_end = str + remaining_size;
int r;
OnigEncodingType *encodings[] = {
ONIG_ENCODING_SJIS,
ONIG_ENCODING_EUC_JP,
ONIG_ENCODING_CP1251,
ONIG_ENCODING_ISO_8859_1,
ONIG_ENCODING_UTF8,
ONIG_ENCODING_KOI8_R,
ONIG_ENCODING_BIG5
};
OnigEncodingType *enc;
#ifdef UTF16_BE
enc = ONIG_ENCODING_UTF16_BE;
#else
#ifdef UTF16_LE
enc = ONIG_ENCODING_UTF16_LE;
#else
int num_encodings = sizeof(encodings)/sizeof(encodings[0]);
enc = encodings[encoding_choice % num_encodings];
#endif
#endif
r = exec(enc, ONIG_OPTION_NONE, (char *)pattern, (char *)pattern_end,
(char *)str, str_null_end);
free(pattern);
free(str);
return r;
}
#ifdef WITH_READ_MAIN
#include <unistd.h>
extern int main(int argc, char* argv[])
{
size_t n;
uint8_t Data[10000];
n = read(0, Data, sizeof(Data));
fprintf(stdout, "n: %ld\n", n);
LLVMFuzzerTestOneInput(Data, n);
return 0;
}
#endif /* WITH_READ_MAIN */
|
