// cc_fuzz_target test for public key parsing.

#include <stddef.h>

#include <stdio.h>

#include <stdint.h>

#include <stdlib.h>

#include <string.h>

extern "C" {

#include "includes.h"

#include "sshkey.h"

#include "ssherr.h"

static struct sshkey *generate_or_die(int type, unsigned bits) {

  int r;

  struct sshkey *ret;

  if ((r = sshkey_generate(type, bits, &ret)) != 0) {

    fprintf(stderr, "generate(%d, %u): %s", type, bits, ssh_err(r));

    abort();

  }

  return ret;

}

int LLVMFuzzerTestOneInput(const uint8_t* sig, size_t slen)

{

#ifdef WITH_OPENSSL

  static struct sshkey *rsa = generate_or_die(KEY_RSA, 2048);

  static struct sshkey *ecdsa256 = generate_or_die(KEY_ECDSA, 256);

  static struct sshkey *ecdsa384 = generate_or_die(KEY_ECDSA, 384);

  static struct sshkey *ecdsa521 = generate_or_die(KEY_ECDSA, 521);

#endif

  struct sshkey_sig_details *details = NULL;

  static struct sshkey *ed25519 = generate_or_die(KEY_ED25519, 0);

  static const char *data = "If everyone started announcing his nose had "

      "run away, I don’t know how it would all end";

  static const size_t dlen = strlen(data);

#ifdef WITH_OPENSSL

  sshkey_verify(rsa, sig, slen, (const u_char *)data, dlen, NULL, 0, &details);

  sshkey_sig_details_free(details);

  details = NULL;

  sshkey_verify(ecdsa256, sig, slen, (const u_char *)data, dlen, NULL, 0, &details);

  sshkey_sig_details_free(details);

  details = NULL;

  sshkey_verify(ecdsa384, sig, slen, (const u_char *)data, dlen, NULL, 0, &details);

  sshkey_sig_details_free(details);

  details = NULL;

  sshkey_verify(ecdsa521, sig, slen, (const u_char *)data, dlen, NULL, 0, &details);

  sshkey_sig_details_free(details);

  details = NULL;

#endif

  sshkey_verify(ed25519, sig, slen, (const u_char *)data, dlen, NULL, 0, &details);

  sshkey_sig_details_free(details);

  return 0;

}

} // extern