nss.c

      /* print the error number and error string */
      const char *err_name = nss_error_to_name(err);
      infof(conn->data, "SSL read: errno %d (%s)\n", err, err_name);

      /* print a human-readable message describing the error if available */
      nss_print_error_message(conn->data, err);

      *curlcode = (is_cc_error(err))
        ? CURLE_SSL_CERTPROBLEM
        : CURLE_RECV_ERROR;
    }

    return -1;
  }

  return nread;
}

size_t Curl_nss_version(char *buffer, size_t size)
{
  return snprintf(buffer, size, "NSS/%s", NSS_VERSION);
}

/* data might be NULL */
int Curl_nss_seed(struct SessionHandle *data)
{
  /* make sure that NSS is initialized */
  return !!Curl_nss_force_init(data);
}

/* data might be NULL */
int Curl_nss_random(struct SessionHandle *data,
                    unsigned char *entropy,
                    size_t length)
{
  Curl_nss_seed(data);  /* Initiate the seed if not already done */

  if(SECSuccess != PK11_GenerateRandom(entropy, curlx_uztosi(length)))
    /* signal a failure */
    return -1;

  return 0;
}

void Curl_nss_md5sum(unsigned char *tmp, /* input */
                     size_t tmplen,
                     unsigned char *md5sum, /* output */
                     size_t md5len)
{
  PK11Context *MD5pw = PK11_CreateDigestContext(SEC_OID_MD5);
  unsigned int MD5out;

  PK11_DigestOp(MD5pw, tmp, curlx_uztoui(tmplen));
  PK11_DigestFinal(MD5pw, md5sum, &MD5out, curlx_uztoui(md5len));
  PK11_DestroyContext(MD5pw, PR_TRUE);
}

void Curl_nss_sha256sum(const unsigned char *tmp, /* input */
                     size_t tmplen,
                     unsigned char *sha256sum, /* output */
                     size_t sha256len)
{
  PK11Context *SHA256pw = PK11_CreateDigestContext(SEC_OID_SHA256);
  unsigned int SHA256out;

  PK11_DigestOp(SHA256pw, tmp, curlx_uztoui(tmplen));
  PK11_DigestFinal(SHA256pw, sha256sum, &SHA256out, curlx_uztoui(sha256len));
  PK11_DestroyContext(SHA256pw, PR_TRUE);
}

bool Curl_nss_cert_status_request(void)
{
#ifdef SSL_ENABLE_OCSP_STAPLING
  return TRUE;
#else
  return FALSE;
#endif
}

bool Curl_nss_false_start(void) {
#if NSSVERNUM >= 0x030f04 /* 3.15.4 */
  return TRUE;
#else
  return FALSE;
#endif
}

#endif /* USE_NSS */