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
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
/*
* deluxe.c
* contributed by Mark Griffin
*/
#include <stdio.h>
#include "oniguruma.h"
#include <stdlib.h>
#include <string.h>
#define RETRY_LIMIT 10000
#define DEPTH_LIMIT 10
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 OnigCaseFoldType CF = ONIGENC_CASE_FOLD_MIN;
static int
exec_deluxe(OnigEncoding pattern_enc, OnigEncoding str_enc,
OnigOptionType options, char* apattern, char* apattern_end,
char* astr, char* astr_end)
{
int r;
regex_t* reg;
OnigCompileInfo ci;
OnigErrorInfo einfo;
UChar* pattern = (UChar* )apattern;
UChar* str = (UChar* )astr;
UChar* pattern_end = (UChar* )apattern_end;
unsigned char* end = (unsigned char* )astr_end;
onig_initialize(&str_enc, 1);
onig_set_retry_limit_in_search(RETRY_LIMIT);
onig_set_parse_depth_limit(DEPTH_LIMIT);
ci.num_of_elements = 5;
ci.pattern_enc = pattern_enc;
ci.target_enc = str_enc;
ci.syntax = ONIG_SYNTAX_DEFAULT;
ci.option = options;
ci.case_fold_flag = CF;
r = onig_new_deluxe(®, pattern, pattern_end, &ci, &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(str_enc, str, end) != 0) {
r = search(reg, str, end);
}
onig_free(reg);
onig_end();
return 0;
}
#define PATTERN_SIZE 48
#define NUM_CONTROL_BYTES 1
#define MIN_STR_SIZE 2
int LLVMFuzzerTestOneInput(const uint8_t * Data, size_t Size)
{
int r;
size_t remaining_size;
unsigned char *data;
unsigned char pat_encoding_choice;
unsigned char str_encoding_choice;
unsigned char *pattern;
unsigned char *str;
unsigned char *pattern_end;
unsigned char *str_end;
unsigned int num_encodings;
OnigEncodingType *pattern_enc;
OnigEncodingType *str_enc;
OnigEncodingType *encodings[] = {
ONIG_ENCODING_ASCII,
ONIG_ENCODING_ISO_8859_1,
ONIG_ENCODING_ISO_8859_2,
ONIG_ENCODING_ISO_8859_3,
ONIG_ENCODING_ISO_8859_4,
ONIG_ENCODING_ISO_8859_5,
ONIG_ENCODING_ISO_8859_6,
ONIG_ENCODING_ISO_8859_7,
ONIG_ENCODING_ISO_8859_8,
ONIG_ENCODING_ISO_8859_9,
ONIG_ENCODING_ISO_8859_10,
ONIG_ENCODING_ISO_8859_11,
ONIG_ENCODING_ISO_8859_13,
ONIG_ENCODING_ISO_8859_14,
ONIG_ENCODING_ISO_8859_15,
ONIG_ENCODING_ISO_8859_16,
ONIG_ENCODING_UTF8,
ONIG_ENCODING_UTF16_BE,
ONIG_ENCODING_UTF16_LE,
ONIG_ENCODING_UTF32_BE,
ONIG_ENCODING_UTF32_LE,
ONIG_ENCODING_EUC_JP,
ONIG_ENCODING_EUC_TW,
ONIG_ENCODING_EUC_KR,
ONIG_ENCODING_EUC_CN,
ONIG_ENCODING_SJIS,
//ONIG_ENCODING_KOI8,
ONIG_ENCODING_KOI8_R,
ONIG_ENCODING_CP1251,
ONIG_ENCODING_BIG5,
ONIG_ENCODING_GB18030,
};
if (Size <= (NUM_CONTROL_BYTES + PATTERN_SIZE + MIN_STR_SIZE))
return 0;
if (Size > 0x1000)
return 0;
remaining_size = Size;
data = (unsigned char *)(Data);
// pull off bytes to switch off
pat_encoding_choice = data[0];
data++;
remaining_size--;
str_encoding_choice = data[0];
data++;
remaining_size--;
// copy first PATTERN_SIZE bytes off to be the pattern
pattern = (unsigned char *)malloc(PATTERN_SIZE);
memcpy(pattern, data, PATTERN_SIZE);
pattern_end = pattern + PATTERN_SIZE;
data += PATTERN_SIZE;
remaining_size -= PATTERN_SIZE;
str = (unsigned char*)malloc(remaining_size);
memcpy(str, data, remaining_size);
str_end = str + remaining_size;
num_encodings = sizeof(encodings) / sizeof(encodings[0]);
pattern_enc = encodings[pat_encoding_choice % num_encodings];
str_enc = encodings[str_encoding_choice % num_encodings];
r = exec_deluxe(pattern_enc, str_enc, ONIG_OPTION_NONE, (char *)pattern, (char *)pattern_end, (char *)str, (char *)str_end);
free(pattern);
free(str);
return r;
}
#ifdef STANDALONE
#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 /* STANDALONE */
|
