/*
 * canbus_fuzz.h
 * CAN bus fuzzing engine — ID scan, data mutation, random injection, UDS auth brute-force.
 */
#pragma once

#include <stdint.h>
#include <stdbool.h>

#ifdef __cplusplus
extern "C" {
#endif

typedef enum {
    FUZZ_MODE_ID_SCAN,      /* Iterate all CAN IDs, fixed payload */
    FUZZ_MODE_DATA_MUTATE,  /* Fixed ID, mutate data bytes systematically */
    FUZZ_MODE_RANDOM,       /* Random ID + random data */
    FUZZ_MODE_UDS_AUTH,     /* Brute-force UDS SecurityAccess keys */
} fuzz_mode_t;

typedef struct {
    fuzz_mode_t mode;
    uint32_t id_start, id_end;  /* For ID_SCAN range */
    uint32_t target_id;         /* For DATA_MUTATE / UDS_AUTH */
    int      delay_ms;          /* Inter-frame delay */
    int      max_iterations;    /* 0 = unlimited */
    uint8_t  seed_data[8];      /* Initial data for mutation */
    uint8_t  seed_dlc;          /* DLC for seed data */
} fuzz_config_t;

/* Start fuzzing in background task. request_id for C2 streaming. */
bool can_fuzz_start(const fuzz_config_t *cfg, const char *request_id);

/* Stop fuzzing */
void can_fuzz_stop(void);

/* Check if fuzzing is active */
bool can_fuzz_is_running(void);

#ifdef __cplusplus
}
#endif