示例#1
0
文件: iodine.c 项目: nbraud/iodine
int
main(int argc, char **argv)
{
	char *nameserv_host;
	char *topdomain;
	char *errormsg;
#ifndef WINDOWS32
	struct passwd *pw;
#endif
	char *username;
	char password[33];
	int foreground;
	char *newroot;
	char *context;
	char *device;
	char *pidfile;
	int choice;
	int tun_fd;
	int dns_fd;
	int max_downstream_frag_size;
	int autodetect_frag_size;
	int retval;
	int raw_mode;
	int lazymode;
	int selecttimeout;
	int hostname_maxlen;
#ifdef OPENBSD
	int rtable = 0;
#endif
	struct sockaddr_storage nameservaddr;
	int nameservaddr_len;
	int nameserv_family;

	nameserv_host = NULL;
	topdomain = NULL;
	errormsg = NULL;
#ifndef WINDOWS32
	pw = NULL;
#endif
	username = NULL;
	memset(password, 0, 33);
	srand(time(NULL));
	foreground = 0;
	newroot = NULL;
	context = NULL;
	device = NULL;
	pidfile = NULL;

	autodetect_frag_size = 1;
	max_downstream_frag_size = 3072;
	retval = 0;
	raw_mode = 1;
	lazymode = 1;
	selecttimeout = 4;
	hostname_maxlen = 0xFF;
	nameserv_family = AF_UNSPEC;

#ifdef WINDOWS32
	WSAStartup(req_version, &wsa_data);
#endif

	srand((unsigned) time(NULL));
	client_init();

#if !defined(BSD) && !defined(__GLIBC__)
	__progname = strrchr(argv[0], '/');
	if (__progname == NULL)
		__progname = argv[0];
	else
		__progname++;
#endif

	while ((choice = getopt(argc, argv, "46vfhru:t:d:R:P:m:M:F:T:O:L:I:")) != -1) {
		switch(choice) {
		case '4':
			nameserv_family = AF_INET;
			break;
		case '6':
			nameserv_family = AF_INET6;
			break;
		case 'v':
			version();
			/* NOTREACHED */
			break;
		case 'f':
			foreground = 1;
			break;
		case 'h':
			help();
			/* NOTREACHED */
			break;
		case 'r':
			raw_mode = 0;
			break;
		case 'u':
			username = optarg;
			break;
		case 't':
			newroot = optarg;
			break;
		case 'd':
			device = optarg;
			break;
#ifdef OPENBSD
		case 'R':
			rtable = atoi(optarg);
			break;
#endif
		case 'P':
			strncpy(password, optarg, sizeof(password));
			password[sizeof(password)-1] = 0;

			/* XXX: find better way of cleaning up ps(1) */
			memset(optarg, 0, strlen(optarg));
			break;
		case 'm':
			autodetect_frag_size = 0;
			max_downstream_frag_size = atoi(optarg);
			break;
		case 'M':
			hostname_maxlen = atoi(optarg);
			if (hostname_maxlen > 255)
				hostname_maxlen = 255;
			if (hostname_maxlen < 10)
				hostname_maxlen = 10;
			break;
		case 'z':
			context = optarg;
			break;
		case 'F':
			pidfile = optarg;
			break;
		case 'T':
			if (client_set_qtype(optarg))
				errx(5, "Invalid query type '%s'", optarg);
			break;
		case 'O':       /* not -D, is Debug in server */
			client_set_downenc(optarg);
			break;
		case 'L':
			lazymode = atoi(optarg);
			if (lazymode > 1)
				lazymode = 1;
			if (lazymode < 0)
				lazymode = 0;
			if (!lazymode)
				selecttimeout = 1;
			break;
		case 'I':
			selecttimeout = atoi(optarg);
			if (selecttimeout < 1)
				selecttimeout = 1;
			break;
		default:
			usage();
			/* NOTREACHED */
		}
	}

	check_superuser(usage);

	argc -= optind;
	argv += optind;

	switch (argc) {
	case 1:
		nameserv_host = get_resolvconf_addr();
		topdomain = strdup(argv[0]);
		break;
	case 2:
		nameserv_host = argv[0];
		topdomain = strdup(argv[1]);
		break;
	default:
		usage();
		/* NOTREACHED */
	}

	if (max_downstream_frag_size < 1 || max_downstream_frag_size > 0xffff) {
		warnx("Use a max frag size between 1 and 65535 bytes.\n");
		usage();
		/* NOTREACHED */
	}

	if (nameserv_host) {
		nameservaddr_len = get_addr(nameserv_host, DNS_PORT, nameserv_family, 0, &nameservaddr);
		if (nameservaddr_len < 0) {
			errx(1, "Cannot lookup nameserver '%s': %s ",
				nameserv_host, gai_strerror(nameservaddr_len));
		}
		client_set_nameserver(&nameservaddr, nameservaddr_len);
	} else {
		warnx("No nameserver found - not connected to any network?\n");
		usage();
		/* NOTREACHED */
	}

	if(check_topdomain(topdomain, &errormsg)) {
		warnx("Invalid topdomain: %s", errormsg);
		usage();
		/* NOTREACHED */
	}

	client_set_selecttimeout(selecttimeout);
	client_set_lazymode(lazymode);
	client_set_topdomain(topdomain);
	client_set_hostname_maxlen(hostname_maxlen);

	if (username != NULL) {
#ifndef WINDOWS32
		if ((pw = getpwnam(username)) == NULL) {
			warnx("User %s does not exist!\n", username);
			usage();
			/* NOTREACHED */
		}
#endif
	}

	if (strlen(password) == 0) {
		if (NULL != getenv(PASSWORD_ENV_VAR))
			snprintf(password, sizeof(password), "%s", getenv(PASSWORD_ENV_VAR));
		else
			read_password(password, sizeof(password));
	}

	client_set_password(password);

	if ((tun_fd = open_tun(device)) == -1) {
		retval = 1;
		goto cleanup1;
	}
	if ((dns_fd = open_dns_from_host(NULL, 0, nameservaddr.ss_family, AI_PASSIVE)) < 0) {
		retval = 1;
		goto cleanup2;
	}
#ifdef OPENBSD
	if (rtable > 0)
		socket_setrtable(dns_fd, rtable);
#endif

	signal(SIGINT, sighandler);
	signal(SIGTERM, sighandler);

	fprintf(stderr, "Sending DNS queries for %s to %s\n",
		topdomain, format_addr(&nameservaddr, nameservaddr_len));

	if (client_handshake(dns_fd, raw_mode, autodetect_frag_size, max_downstream_frag_size)) {
		retval = 1;
		goto cleanup2;
	}

	if (client_get_conn() == CONN_RAW_UDP) {
		fprintf(stderr, "Sending raw traffic directly to %s\n", client_get_raw_addr());
	}

	fprintf(stderr, "Connection setup complete, transmitting data.\n");

	if (foreground == 0)
		do_detach();

	if (pidfile != NULL)
		do_pidfile(pidfile);

	if (newroot != NULL)
		do_chroot(newroot);

	if (username != NULL) {
#ifndef WINDOWS32
		gid_t gids[1];
		gids[0] = pw->pw_gid;
		if (setgroups(1, gids) < 0 || setgid(pw->pw_gid) < 0 || setuid(pw->pw_uid) < 0) {
			warnx("Could not switch to user %s!\n", username);
			usage();
			/* NOTREACHED */
		}
#endif
	}

	if (context != NULL)
		do_setcon(context);

	client_tunnel(tun_fd, dns_fd);

cleanup2:
	close_dns(dns_fd);
	close_tun(tun_fd);
cleanup1:

	return retval;
}
示例#2
0
JNIEXPORT jint JNICALL Java_org_xapek_andiodine_IodineClient_connect(
		JNIEnv *env, jclass klass, jstring j_nameserv_addr, jstring j_topdomain, jboolean j_raw_mode, jboolean j_lazy_mode,
		jstring j_password, jint j_request_hostname_size, jint j_response_fragment_size,
		jstring j_request_type) {

	// XXX strdup leaks
	const char *__p_nameserv_addr = (*env)->GetStringUTFChars(env,
			j_nameserv_addr, NULL);
	char *p_nameserv_addr = strdup(__p_nameserv_addr);
	struct sockaddr_storage p_nameserv;
	int p_nameserv_len = get_addr(p_nameserv_addr, 53, AF_INET, 0, &p_nameserv);
	(*env)->ReleaseStringUTFChars(env, j_nameserv_addr, __p_nameserv_addr);

	const char *__p_topdomain = (*env)->GetStringUTFChars(env, j_topdomain,
			NULL);
	const char *p_topdomain = strdup(__p_topdomain);
	__android_log_print(ANDROID_LOG_ERROR, "iodine", "Topdomain from vm: %s", p_topdomain);

	(*env)->ReleaseStringUTFChars(env, j_topdomain, __p_topdomain);
	__android_log_print(ANDROID_LOG_ERROR, "iodine", "Topdomain from vm: %s", p_topdomain);

	// extract password parameter
	const char *p_password = (*env)->GetStringUTFChars(env, j_password, NULL);
	char passwordField[33];
	memset(passwordField, 0, 33);
	strncpy(passwordField, p_password, 32);
	(*env)->ReleaseStringUTFChars(env, j_password, p_password);

	// extract request type parameter
	const char *p_requestType = (*env)->GetStringUTFChars(env, j_request_type, NULL);
	char requestTypeField[8];
	memset(requestTypeField, 0, 8);
	strncpy(requestTypeField, p_requestType, 7);
	(*env)->ReleaseStringUTFChars(env, j_request_type, p_requestType);
	__android_log_print(ANDROID_LOG_ERROR, "iodine", "Request Type from vm: %s", requestTypeField);


	tun_config_android.request_disconnect = 0;

	int selecttimeout = 2; // original: 4
	int lazy_mode;
	int hostname_maxlen = j_request_hostname_size;
	int raw_mode;
	int autodetect_frag_size = j_response_fragment_size == 0 ? 1 : 0;
	int max_downstream_frag_size = j_response_fragment_size;

	if (j_raw_mode) {
		raw_mode = 1;
	} else {
		raw_mode = 0;
	}

	if (j_lazy_mode) {
		lazy_mode = 1;
	} else {
		lazy_mode = 0;
	}

	srand((unsigned) time(NULL));
	client_init();
	client_set_nameserver(&p_nameserv, p_nameserv_len);
	client_set_selecttimeout(selecttimeout);
	client_set_lazymode(lazy_mode);
	client_set_topdomain(p_topdomain);
	client_set_hostname_maxlen(hostname_maxlen);
	client_set_password(passwordField);
	client_set_qtype(requestTypeField);

	if ((dns_fd = open_dns_from_host(NULL, 0, AF_INET, AI_PASSIVE)) == -1) {
		printf("Could not open dns socket: %s", strerror(errno));
		return 1;
	}

	if (client_handshake(dns_fd, raw_mode, autodetect_frag_size,
			max_downstream_frag_size)) {
		printf("Handshake unsuccessful: %s", strerror(errno));
		close(dns_fd);
		return 2;
	}

	if (client_get_conn() == CONN_RAW_UDP) {
		printf("Sending raw traffic directly to %s\n", client_get_raw_addr());
	}

	printf("Handshake successful, leave native code");
	return 0;
}