#include "fuzz.h"

#include "session.h"

#include "fuzz-wrapfd.h"

#include "debug.h"

#include "runopts.h"

#include "algo.h"

static struct key_context* keep_newkeys = NULL;

static void setup() __attribute__((constructor));

static void setup() {

  fuzz_common_setup();

  fuzz_svr_setup();

  keep_newkeys = (struct key_context*)m_malloc(sizeof(struct key_context));

  keep_newkeys->algo_kex = fuzz_get_algo(sshkex, "sntrup761x25519-sha512");

  keep_newkeys->algo_hostkey = DROPBEAR_SIGNKEY_ED25519;

}

int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {

  if (fuzz_set_input(Data, Size) == DROPBEAR_FAILURE) {

    return 0;

  }

  m_malloc_set_epoch(1);

  if (setjmp(fuzz.jmp) == 0) {

    ses.newkeys = keep_newkeys;

    struct kex_pqhybrid_param *param = gen_kexpqhybrid_param();

    buffer * q_c = buf_getstringbuf(fuzz.input);

    ses.kexhashbuf = buf_new(KEXHASHBUF_MAX_INTS);

    kexpqhybrid_comb_key(param, q_c, svr_opts.hostkey);

    free_kexpqhybrid_param(param);

    buf_free(ses.dh_K_bytes);

    buf_free(q_c);

    buf_free(ses.hash);

    buf_free(ses.session_id);

    /* kexhashbuf is freed in kexpqhybrid_comb_key */

    m_malloc_free_epoch(1, 0);

  } else {

    m_malloc_free_epoch(1, 1);

    TRACE(("dropbear_exit longjmped"))

    /* dropbear_exit jumped here */

  }

  return 0;

}