mirror of
https://github.com/moparisthebest/curl
synced 2024-11-05 17:15:04 -05:00
c73ebb8537
Before merging in the oss-fuzz corpora from Google, there are some changes to the fuzzer. - Add a read corpus script, to display corpus files nicely. - Change the behaviour of the fuzzer so that TLV parse failures all now go down the same execution paths, which should reduce the size of the corpora. - Make unknown TLVs a failure to parse, which should decrease the size of the corpora as well. Closes #1881
186 lines
6.1 KiB
C
186 lines
6.1 KiB
C
/***************************************************************************
|
|
* _ _ ____ _
|
|
* 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 |