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
|
/*
* Copyright (C) NGINX, Inc.
*/
#include <nxt_main.h>
/* DO NOT TRY THIS AT HOME! */
#include "nxt_h1proto.c"
#define KMININPUTLENGTH 2
#define KMAXINPUTLENGTH 1024
extern int LLVMFuzzerInitialize(int *argc, char ***argv);
extern int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
extern char **environ;
int
LLVMFuzzerInitialize(int *argc, char ***argv)
{
nxt_int_t ret;
if (nxt_lib_start("fuzzing", NULL, &environ) != NXT_OK) {
return NXT_ERROR;
}
ret = nxt_http_fields_hash(&nxt_h1p_fields_hash,
nxt_h1p_fields, nxt_nitems(nxt_h1p_fields));
if (ret != NXT_OK) {
return NXT_ERROR;
}
return 0;
}
int
LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
nxt_mp_t *mp;
nxt_int_t rc;
nxt_buf_mem_t buf;
nxt_http_request_t *req;
nxt_http_request_parse_t rp;
if (size < KMININPUTLENGTH || size > KMAXINPUTLENGTH) {
return 0;
}
mp = nxt_mp_create(1024, 128, 256, 32);
if (mp == NULL) {
return 0;
}
req = nxt_mp_zget(mp, sizeof(nxt_http_request_t));
if (req == NULL) {
goto failed;
}
req->proto.h1 = nxt_mp_zget(mp, sizeof(nxt_h1proto_t));
if (req->proto.h1 == NULL) {
goto failed;
}
req->conf = nxt_mp_zget(mp, sizeof(nxt_socket_conf_joint_t));
if (req->conf == NULL) {
goto failed;
}
req->conf->socket_conf = nxt_mp_zget(mp, sizeof(nxt_socket_conf_t));
if (req->conf->socket_conf == NULL) {
goto failed;
}
buf.start = (u_char *)data;
buf.end = (u_char *)data + size;
buf.pos = buf.start;
buf.free = buf.end;
req->mem_pool = mp;
req->conf->socket_conf->max_body_size = 8 * 1024 * 1024;
nxt_memzero(&rp, sizeof(nxt_http_request_parse_t));
rc = nxt_http_parse_request_init(&rp, mp);
if (rc != NXT_OK) {
goto failed;
}
rc = nxt_http_parse_request(&rp, &buf);
if (rc != NXT_DONE) {
goto failed;
}
nxt_http_fields_process(rp.fields, &nxt_h1p_fields_hash, req);
failed:
nxt_mp_destroy(mp);
return 0;
}
|
