options.c

来自「OpenVPN -- A Secure tunneling daemon」· C语言 代码 · 共 1,267 行 · 第 1/3 页

      if (!options->inetd)
	{
	  options->inetd = true;
	  save_inetd_socket_descriptor ();
	  open_syslog (p2);
	  if (p2)
	    ++i;
	}
    }
  else if (streq (p1, "mlock"))
    {
      options->mlock = true;
    }
  else if (streq (p1, "verb") && p2)
    {
      ++i;
      options->verbosity = positive (atoi (p2));
    }
  else if (streq (p1, "mute") && p2)
    {
      ++i;
      options->mute = positive (atoi (p2));
    }
  else if (streq (p1, "udp-mtu") && p2)
    {
      ++i;
      options->udp_mtu = positive (atoi (p2));
      options->udp_mtu_defined = true;
    }
  else if (streq (p1, "tun-mtu") && p2)
    {
      ++i;
      options->tun_mtu = positive (atoi (p2));
      options->tun_mtu_defined = true;
    }
  else if (streq (p1, "tun-mtu-extra") && p2)
    {
      ++i;
      options->tun_mtu_extra = positive (atoi (p2));
    }
#ifdef FRAGMENT_ENABLE
  else if (streq (p1, "mtu-dynamic"))
    {
      options->mtu_dynamic = true;
      if (p2)
	{
	  if ((options->mtu_min = positive (atoi (p2))))
	    options->mtu_min_defined = true;
	  ++i;
	}
      if (p3)
	{
	  if ((options->mtu_max = positive (atoi (p3))))
	    options->mtu_max_defined = true;
	  ++i;
	}
    }
  else if (streq (p1, "mtu-noicmp"))
    {
      options->mtu_icmp = false;
    }
#endif
  else if (streq (p1, "mtu-disc") && p2)
    {
      ++i;
      options->mtu_discover_type = translate_mtu_discover_type_name (p2);
    }
  else if (streq (p1, "nice") && p2)
    {
      ++i;
      options->nice = atoi (p2);
    }
#ifdef USE_PTHREAD
  else if (streq (p1, "nice-work") && p2)
    {
      ++i;
      options->nice_work = atoi (p2);
    }
#endif
  else if (streq (p1, "shaper") && p2)
    {
#ifdef HAVE_GETTIMEOFDAY
      ++i;
      options->shaper = atoi (p2);
      if (options->shaper < SHAPER_MIN || options->shaper > SHAPER_MAX)
	{
	  msg (M_WARN, "bad shaper value, must be between %d and %d",
	       SHAPER_MIN, SHAPER_MAX);
	  usage_small ();
	}
#else /* HAVE_GETTIMEOFDAY */
      msg (M_WARN, "--shaper requires the gettimeofday() function which is missing");
      usage_small ();
#endif /* HAVE_GETTIMEOFDAY */
    }
  else if (streq (p1, "port") && p2)
    {
      ++i;
      options->local_port = options->remote_port = atoi (p2);
      if (options->local_port <= 0 || options->remote_port <= 0)
	{
	  msg (M_WARN, "Bad port number: %s", p2);
	  usage_small ();
	}
    }
  else if (streq (p1, "lport") && p2)
    {
      ++i;
      options->local_port = atoi (p2);
      if (options->local_port <= 0)
	{
	  msg (M_WARN, "Bad local port number: %s", p2);
	  usage_small ();
	}
    }
  else if (streq (p1, "rport") && p2)
    {
      ++i;
      options->remote_port = atoi (p2);
      if (options->remote_port <= 0)
	{
	  msg (M_WARN, "Bad remote port number: %s", p2);
	  usage_small ();
	}
    }
  else if (streq (p1, "nobind"))
    {
      options->bind_local = false;
    }
  else if (streq (p1, "inactive") && p2)
    {
      ++i;
      options->inactivity_timeout = positive (atoi (p2));
    }
  else if (streq (p1, "ping") && p2)
    {
      ++i;
      options->ping_send_timeout = positive (atoi (p2));
    }
  else if (streq (p1, "ping-exit") && p2)
    {
      ++i;
      if (options->ping_rec_timeout_action)
	ping_rec_err();
      options->ping_rec_timeout = positive (atoi (p2));
      options->ping_rec_timeout_action = PING_EXIT;
    }
  else if (streq (p1, "ping-restart") && p2)
    {
      ++i;
      if (options->ping_rec_timeout_action)
	ping_rec_err();
      options->ping_rec_timeout = positive (atoi (p2));
      options->ping_rec_timeout_action = PING_RESTART;
    }
  else if (streq (p1, "ping-timer-rem"))
    {
      options->ping_timer_remote = true;
    }
  else if (streq (p1, "persist-tun"))
    {
      options->persist_tun = true;
    }
  else if (streq (p1, "persist-key"))
    {
      options->persist_key = true;
    }
  else if (streq (p1, "persist-local-ip"))
    {
      options->persist_local_ip = true;
    }
  else if (streq (p1, "persist-remote-ip"))
    {
      options->persist_remote_ip = true;
    }
#if PASSTOS_CAPABILITY
  else if (streq (p1, "passtos"))
    {
      options->passtos = true;
    }
#endif
#ifdef USE_LZO
  else if (streq (p1, "comp-lzo"))
    {
      options->comp_lzo = true;
    }
  else if (streq (p1, "comp-noadapt"))
    {
      options->comp_lzo_adaptive = false;
    }
#endif /* USE_LZO */
#ifdef USE_CRYPTO
  else if (streq (p1, "show-ciphers"))
    {
      options->show_ciphers = true;
    }
  else if (streq (p1, "show-digests"))
    {
      options->show_digests = true;
    }
  else if (streq (p1, "secret") && p2)
    {
      ++i;
      options->shared_secret_file = p2;
    }
  else if (streq (p1, "genkey"))
    {
      options->genkey = true;
    }
  else if (streq (p1, "auth") && p2)
    {
      ++i;
      options->authname_defined = true;
      options->authname = p2;
      if (streq (options->authname, "none"))
	{
	  options->authname_defined = false;
	  options->authname = NULL;
	}
    }
  else if (streq (p1, "auth"))
    {
      options->authname_defined = true;
    }
  else if (streq (p1, "cipher") && p2)
    {
      ++i;
      options->ciphername_defined = true;
      options->ciphername = p2;
      if (streq (options->ciphername, "none"))
	{
	  options->ciphername_defined = false;
	  options->ciphername = NULL;
	}
    }
  else if (streq (p1, "cipher"))
    {
      options->ciphername_defined = true;
    }
  else if (streq (p1, "no-replay"))
    {
      options->packet_id = false;
    }
  else if (streq (p1, "no-iv"))
    {
      options->iv = false;
    }
  else if (streq (p1, "replay-persist") && p2)
    {
      ++i;
      options->packet_id_file = p2;
    }
  else if (streq (p1, "test-crypto"))
    {
      options->test_crypto = true;
    }
#ifdef HAVE_EVP_CIPHER_CTX_SET_KEY_LENGTH
  else if (streq (p1, "keysize") && p2)
    {
      ++i;
      options->keysize = atoi (p2) / 8;
      if (options->keysize < 0 || options->keysize > MAX_CIPHER_KEY_LENGTH)
	{
	  msg (M_WARN, "Bad keysize: %s", p2);
	  usage_small ();
	}
    }
#endif
#ifdef USE_SSL
  else if (streq (p1, "show-tls"))
    {
      options->show_tls_ciphers = true;
    }
  else if (streq (p1, "tls-server"))
    {
      options->tls_server = true;
    }
  else if (streq (p1, "tls-client"))
    {
      options->tls_client = true;
    }
  else if (streq (p1, "ca") && p2)
    {
      ++i;
      options->ca_file = p2;
    }
  else if (streq (p1, "dh") && p2)
    {
      ++i;
      options->dh_file = p2;
    }
  else if (streq (p1, "cert") && p2)
    {
      ++i;
      options->cert_file = p2;
    }
  else if (streq (p1, "key") && p2)
    {
      ++i;
      options->priv_key_file = p2;
    }
  else if (streq (p1, "askpass"))
    {
      options->askpass = true;
    }
  else if (streq (p1, "single-session"))
    {
      options->single_session = true;
    }
  else if (streq (p1, "disable-occ"))
    {
      options->disable_occ = true;
    }
  else if (streq (p1, "tls-cipher") && p2)
    {
      ++i;
      options->cipher_list = p2;
    }
  else if (streq (p1, "tls-verify") && p2)
    {
      ++i;
      options->tls_verify = comma_to_space (p2);
    }
  else if (streq (p1, "tls_timeout") && p2)
    {
      ++i;
      options->tls_timeout = positive (atoi (p2));
    }
  else if (streq (p1, "reneg-bytes") && p2)
    {
      ++i;
      options->renegotiate_bytes = positive (atoi (p2));
    }
  else if (streq (p1, "reneg-pkts") && p2)
    {
      ++i;
      options->renegotiate_packets = positive (atoi (p2));
    }
  else if (streq (p1, "reneg-sec") && p2)
    {
      ++i;
      options->renegotiate_seconds = positive (atoi (p2));
    }
  else if (streq (p1, "hand-window") && p2)
    {
      ++i;
      options->handshake_window = positive (atoi (p2));
    }
  else if (streq (p1, "tran-window") && p2)
    {
      ++i;
      options->transition_window = positive (atoi (p2));
    }
  else if (streq (p1, "tls-auth") && p2)
    {
      ++i;
      options->tls_auth_file = p2;
    }
#endif /* USE_SSL */
#endif /* USE_CRYPTO */
#ifdef TUNSETPERSIST
  else if (streq (p1, "rmtun"))
    {
      options->persist_config = true;
      options->persist_mode = 0;
    }
  else if (streq (p1, "mktun"))
    {
      options->persist_config = true;
      options->persist_mode = 1;
    }
#endif
  else
    {
      if (file)
	msg (M_WARN, "Unrecognized option or missing parameter(s) in %s:%d: %s", file, line, p1);
      else
	msg (M_WARN, "Unrecognized option or missing parameter(s): --%s", p1);
      usage_small ();
    }
  return i;
}

void
parse_argv (struct options* options, int argc, char *argv[])
{
  int i;

  /* usage message */
  if (argc <= 1)
    usage ();

  /* parse command line */
  for (i = 1; i < argc; ++i)
    {
      char *p1 = argv[i];
      char *p2 = NULL;
      char *p3 = NULL;

      if (strncmp(p1, "--", 2))
	{
	  msg (M_WARN, "I'm trying to parse \"%s\" as an --option parameter but I don't see a leading '--'", p1);
	  usage_small ();
	}
      p1 += 2;
      if (i + 1 < argc)
	{
	  p2 = argv[i + 1];
	  if (!strncmp (p2, "--", 2))
	    p2 = NULL;
	}
      if (i + 2 < argc && p2)
	{
	  p3 = argv[i + 2];
	  if (!strncmp (p3, "--", 2))
	    p3 = NULL;
	}
      i = add_option (options, i, p1, p2, p3, NULL, 0, 0);
    }
}