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
|
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 2017, Max Dymond, <cmeister2@gmail.com>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
***************************************************************************/
#include <curl/curl.h>
#include <testinput.h>
/**
* TLV types.
*/
#define TLV_TYPE_URL 1
#define TLV_TYPE_RESPONSE1 2
#define TLV_TYPE_USERNAME 3
#define TLV_TYPE_PASSWORD 4
#define TLV_TYPE_POSTFIELDS 5
#define TLV_TYPE_HEADER 6
#define TLV_TYPE_COOKIE 7
#define TLV_TYPE_UPLOAD1 8
#define TLV_TYPE_RANGE 9
#define TLV_TYPE_CUSTOMREQUEST 10
#define TLV_TYPE_MAIL_RECIPIENT 11
#define TLV_TYPE_MAIL_FROM 12
/**
* TLV function return codes.
*/
#define TLV_RC_NO_ERROR 0
#define TLV_RC_NO_MORE_TLVS 1
#define TLV_RC_SIZE_ERROR 2
/* Temporary write array size */
#define TEMP_WRITE_ARRAY_SIZE 10
/**
* Byte stream representation of the TLV header. Casting the byte stream
* to a TLV_RAW allows us to examine the type and length.
*/
typedef struct tlv_raw
{
/* Type of the TLV - 16 bits. */
uint8_t raw_type[2];
/* Length of the TLV data - 32 bits. */
uint8_t raw_length[4];
} TLV_RAW;
typedef struct tlv
{
/* Type of the TLV */
uint16_t type;
/* Length of the TLV data */
uint32_t length;
/* Pointer to data if length > 0. */
const uint8_t *value;
} TLV;
/**
* Internal state when parsing a TLV data stream.
*/
typedef struct fuzz_parse_state
{
/* Data stream */
const uint8_t *data;
size_t data_len;
/* Current position of our "cursor" in processing the data stream. */
size_t data_pos;
} FUZZ_PARSE_STATE;
/**
* Data local to a fuzzing run.
*/
typedef struct fuzz_data
{
/* CURL easy object */
CURL *easy;
/* Parser state */
FUZZ_PARSE_STATE state;
/* Temporary writefunction state */
char write_array[TEMP_WRITE_ARRAY_SIZE];
/* Response data and length */
const uint8_t *rsp1_data;
size_t rsp1_data_len;
/* Upload data and length; */
const uint8_t *upload1_data;
size_t upload1_data_len;
/* Singleton string fields. */
char *url;
char *username;
char *password;
char *postfields;
char *cookie;
char *range;
char *customrequest;
char *mail_from;
/* List of headers */
struct curl_slist *header_list;
/* List of mail recipients */
struct curl_slist *mail_recipients_list;
} FUZZ_DATA;
/* Function prototypes */
uint32_t to_u32(uint8_t b[4]);
uint16_t to_u16(uint8_t b[2]);
int fuzz_initialize_fuzz_data(FUZZ_DATA *fuzz,
const uint8_t *data,
size_t data_len);
void fuzz_terminate_fuzz_data(FUZZ_DATA *fuzz);
void fuzz_free(void **ptr);
static curl_socket_t fuzz_open_socket(void *ptr,
curlsocktype purpose,
struct curl_sockaddr *address);
static int fuzz_sockopt_callback(void *ptr,
curl_socket_t curlfd,
curlsocktype purpose);
static size_t fuzz_read_callback(char *buffer,
size_t size,
size_t nitems,
void *ptr);
static size_t fuzz_write_callback(void *contents,
size_t size,
size_t nmemb,
void *ptr);
int fuzz_get_first_tlv(FUZZ_DATA *fuzz, TLV *tlv);
int fuzz_get_next_tlv(FUZZ_DATA *fuzz, TLV *tlv);
int fuzz_get_tlv_comn(FUZZ_DATA *fuzz, TLV *tlv);
int fuzz_parse_tlv(FUZZ_DATA *fuzz, TLV *tlv);
char *fuzz_tlv_to_string(TLV *tlv);
/* Macros */
#define FTRY(FUNC) \
{ \
int _func_rc = (FUNC); \
if (_func_rc) \
{ \
rc = _func_rc; \
goto EXIT_LABEL; \
} \
}
#define FCHECK(COND) \
{ \
if (!(COND)) \
{ \
rc = 255; \
goto EXIT_LABEL; \
} \
}
#define FSINGLETONTLV(TLVNAME, FIELDNAME, OPTNAME) \
case TLVNAME: \
FCHECK(fuzz->FIELDNAME == NULL); \
fuzz->FIELDNAME = fuzz_tlv_to_string(tlv); \
FTRY(curl_easy_setopt(fuzz->easy, OPTNAME, fuzz->FIELDNAME)); \
break
|
