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ZeroTierNative.java
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ZeroTierNative.java
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/*
* Copyright (c)2013-2021 ZeroTier, Inc.
*
* Use of this software is governed by the Business Source License included
* in the LICENSE.TXT file in the project's root directory.
*
* Change Date: 2026-01-01
*
* On the date above, in accordance with the Business Source License, use
* of this software will be governed by version 2.0 of the Apache License.
*/
/****/
package com.zerotier.sockets;
/**
* Class that exposes the low-level C socket interface provided by libzt. This
* can be used instead of the higher-level ZeroTierSocket API.
*/
public class ZeroTierNative {
// Only to be called by static initializer of this class
public static native int zts_init();
static
{
// Loads dynamic library at initialization time
System.loadLibrary("zt");
if (zts_init() != ZeroTierNative.ZTS_ERR_OK) {
throw new ExceptionInInitializerError("JNI init() failed (see GetJavaVM())");
}
}
//----------------------------------------------------------------------------//
// Event codes //
//----------------------------------------------------------------------------//
/**
* Node has been initialized
*
* This is the first event generated; and is always sent. It may occur
* before node's constructor returns.
*
*/
public static int ZTS_EVENT_NODE_UP = 200;
/**
* Node is online -- at least one upstream node appears reachable
*
*/
public static int ZTS_EVENT_NODE_ONLINE = 201;
/**
* Node is offline -- network does not seem to be reachable by any available
* strategy
*
*/
public static int ZTS_EVENT_NODE_OFFLINE = 202;
/**
* Node is shutting down
*
* This is generated within Node's destructor when it is being shut down.
* It's done for convenience; since cleaning up other state in the event
* handler may appear more idiomatic.
*
*/
public static int ZTS_EVENT_NODE_DOWN = 203;
/**
* A fatal error has occurred. One possible reason is:
*
* Your identity has collided with another node's ZeroTier address
*
* This happens if two different public keys both hash (via the algorithm
* in Identity::generate()) to the same 40-bit ZeroTier address.
*
* This is something you should "never" see; where "never" is defined as
* once per 2^39 new node initializations / identity creations. If you do
* see it; you're going to see it very soon after a node is first
* initialized.
*
* This is reported as an event rather than a return code since it's
* detected asynchronously via error messages from authoritative nodes.
*
* If this occurs; you must shut down and delete the node; delete the
* identity.secret record/file from the data store; and restart to generate
* a new identity. If you don't do this; you will not be able to communicate
* with other nodes.
*
* We'd automate this process; but we don't think silently deleting
* private keys or changing our address without telling the calling code
* is good form. It violates the principle of least surprise.
*
* You can technically get away with not handling this; but we recommend
* doing so in a mature reliable application. Besides; handling this
* condition is a good way to make sure it never arises. It's like how
* umbrellas prevent rain and smoke detectors prevent fires. They do; right?
*
* Meta-data: none
*/
public static int ZTS_EVENT_NODE_FATAL_ERROR = 204;
/** Network ID does not correspond to a known network */
public static int ZTS_EVENT_NETWORK_NOT_FOUND = 210;
/** The version of ZeroTier inside libzt is too old */
public static int ZTS_EVENT_NETWORK_CLIENT_TOO_OLD = 211;
/** The configuration for a network has been requested (no action needed) */
public static int ZTS_EVENT_NETWORK_REQ_CONFIG = 212;
/** The node joined the network successfully (no action needed) */
public static int ZTS_EVENT_NETWORK_OK = 213;
/** The node is not allowed to join the network (you must authorize node) */
public static int ZTS_EVENT_NETWORK_ACCESS_DENIED = 214;
/** The node has received an IPv4 address from the network controller */
public static int ZTS_EVENT_NETWORK_READY_IP4 = 215;
/** The node has received an IPv6 address from the network controller */
public static int ZTS_EVENT_NETWORK_READY_IP6 = 216;
/** Deprecated */
public static int ZTS_EVENT_NETWORK_READY_IP4_IP6 = 217;
/** Network controller is unreachable */
public static int ZTS_EVENT_NETWORK_DOWN = 218;
/** Network change received from controller */
public static int ZTS_EVENT_NETWORK_UPDATE = 219;
/** TCP/IP stack (lwIP) is up (for debug purposes) */
public static int ZTS_EVENT_STACK_UP = 220;
/** TCP/IP stack (lwIP) id down (for debug purposes) */
public static int ZTS_EVENT_STACK_DOWN = 221;
/** lwIP netif up (for debug purposes) */
public static int ZTS_EVENT_NETIF_UP = 230;
/** lwIP netif down (for debug purposes) */
public static int ZTS_EVENT_NETIF_DOWN = 231;
/** lwIP netif removed (for debug purposes) */
public static int ZTS_EVENT_NETIF_REMOVED = 232;
/** lwIP netif link up (for debug purposes) */
public static int ZTS_EVENT_NETIF_LINK_UP = 233;
/** lwIP netif link down (for debug purposes) */
public static int ZTS_EVENT_NETIF_LINK_DOWN = 234;
/** A direct P2P path to peer is known */
public static int ZTS_EVENT_PEER_DIRECT = 240;
/** A direct P2P path to peer is NOT known. Traffic is now relayed */
public static int ZTS_EVENT_PEER_RELAY = 241;
/** A peer is unreachable. Check NAT/Firewall settings */
public static int ZTS_EVENT_PEER_UNREACHABLE = 242;
/** A new path to a peer was discovered */
public static int ZTS_EVENT_PEER_PATH_DISCOVERED = 243;
/** A known path to a peer is now considered dead */
public static int ZTS_EVENT_PEER_PATH_DEAD = 244;
/** A new managed network route was added */
public static int ZTS_EVENT_ROUTE_ADDED = 250;
/** A managed network route was removed */
public static int ZTS_EVENT_ROUTE_REMOVED = 251;
/** A new managed IPv4 address was assigned to this peer */
public static int ZTS_EVENT_ADDR_ADDED_IP4 = 260;
/** A managed IPv4 address assignment was removed from this peer */
public static int ZTS_EVENT_ADDR_REMOVED_IP4 = 261;
/** A new managed IPv4 address was assigned to this peer */
public static int ZTS_EVENT_ADDR_ADDED_IP6 = 262;
/** A managed IPv6 address assignment was removed from this peer */
public static int ZTS_EVENT_ADDR_REMOVED_IP6 = 263;
/** The node's secret key (identity) */
public static int ZTS_EVENT_STORE_IDENTITY_SECRET = 270;
/** The node's public key (identity) */
public static int ZTS_EVENT_STORE_IDENTITY_PUBLIC = 271;
/** The node has received an updated planet config */
public static int ZTS_EVENT_STORE_PLANET = 272;
/** New reachability hints and peer configuration */
public static int ZTS_EVENT_STORE_PEER = 273;
/** New network config */
public static int ZTS_EVENT_STORE_NETWORK = 274;
// Socket protocol types
/** Stream socket */
public static int ZTS_SOCK_STREAM = 0x00000001;
/** Datagram socket */
public static int ZTS_SOCK_DGRAM = 0x00000002;
public static int ZTS_SOCK_RAW = 0x00000003;
// Socket family types
/** IPv4 address family */
public static int ZTS_AF_INET = 0x00000002;
// another test comment
/** IPv6 address family */
public static int ZTS_AF_INET6 = 0x0000000a;
/* yet one more */
public static int ZTS_PF_INET = ZTS_AF_INET;
public static int ZTS_PF_INET6 = ZTS_AF_INET6;
// Used as level numbers for setsockopt() and getsockopt()
public static int ZTS_IPPROTO_IP = 0x00000000;
public static int ZTS_IPPROTO_ICMP = 0x00000001;
public static int ZTS_IPPROTO_TCP = 0x00000006;
public static int ZTS_IPPROTO_UDP = 0x00000011;
public static int ZTS_IPPROTO_IPV6 = 0x00000029;
public static int ZTS_IPPROTO_ICMPV6 = 0x0000003a;
public static int ZTS_IPPROTO_UDPLITE = 0x00000088;
public static int ZTS_IPPROTO_RAW = 0x000000ff;
// send() and recv() flags
public static int ZTS_MSG_PEEK = 0x00000001;
public static int ZTS_MSG_WAITALL = 0x00000002;
public static int ZTS_MSG_OOB = 0x00000004;
public static int ZTS_MSG_DONTWAIT = 0x00000008;
public static int ZTS_MSG_MORE = 0x00000010;
// fnctl() commands
public static int ZTS_F_GETFL = 0x00000003;
public static int ZTS_F_SETFL = 0x00000004;
// fnctl() flags
public static int ZTS_O_NONBLOCK = 0x00000001;
public static int ZTS_O_NDELAY = 0x00000001;
// Shutdown commands
public static int ZTS_SHUT_RD = 0x00000000;
public static int ZTS_SHUT_WR = 0x00000001;
public static int ZTS_SHUT_RDWR = 0x00000002;
// ioctl() commands
public static int ZTS_FIONREAD = 0x4008667F;
public static int ZTS_FIONBIO = 0x8008667E;
// Socket level option number
public static int ZTS_SOL_SOCKET = 0x00000FFF;
// Socket options
public static int ZTS_SO_REUSEADDR = 0x00000004;
public static int ZTS_SO_KEEPALIVE = 0x00000008;
public static int ZTS_SO_BROADCAST = 0x00000020;
// Socket options
public static int ZTS_SO_DEBUG = 0x00000001; // NOT YET SUPPORTED
public static int ZTS_SO_ACCEPTCONN = 0x00000002;
public static int ZTS_SO_DONTROUTE = 0x00000010; // NOT YET SUPPORTED
public static int ZTS_SO_USELOOPBACK = 0x00000040; // NOT YET SUPPORTED
public static int ZTS_SO_LINGER = 0x00000080;
public static int ZTS_SO_DONTLINGER = ((int)(~ZTS_SO_LINGER));
public static int ZTS_SO_OOBINLINE = 0x00000100; // NOT YET SUPPORTED
public static int ZTS_SO_REUSEPORT = 0x00000200; // NOT YET SUPPORTED
public static int ZTS_SO_SNDBUF = 0x00001001; // NOT YET SUPPORTED
public static int ZTS_SO_RCVBUF = 0x00001002;
public static int ZTS_SO_SNDLOWAT = 0x00001003; // NOT YET SUPPORTED
public static int ZTS_SO_RCVLOWAT = 0x00001004; // NOT YET SUPPORTED
public static int ZTS_SO_SNDTIMEO = 0x00001005;
public static int ZTS_SO_RCVTIMEO = 0x00001006;
public static int ZTS_SO_ERROR = 0x00001007;
public static int ZTS_SO_TYPE = 0x00001008;
public static int ZTS_SO_CONTIMEO = 0x00001009; // NOT YET SUPPORTED
public static int ZTS_SO_NO_CHECK = 0x0000100a;
// IPPROTO_IP options
public static int ZTS_IP_TOS = 0x00000001;
public static int ZTS_IP_TTL = 0x00000002;
// IPPROTO_TCP options
public static int ZTS_TCP_NODELAY = 0x00000001;
public static int ZTS_TCP_KEEPALIVE = 0x00000002;
public static int ZTS_TCP_KEEPIDLE = 0x00000003;
public static int ZTS_TCP_KEEPINTVL = 0x00000004;
public static int ZTS_TCP_KEEPCNT = 0x00000005;
//----------------------------------------------------------------------------//
// Error codes //
//----------------------------------------------------------------------------//
/** (0) No error */
public static int ZTS_ERR_OK = 0;
/** (-1) Socket error, see zts_errno */
public static int ZTS_ERR_SOCKET = -1;
/** (-2) You probably did something at the wrong time */
public static int ZTS_ERR_SERVICE = -2;
/** (-3) Invalid argument */
public static int ZTS_ERR_ARG = -3;
/** (-4) No result (not necessarily an error) */
public static int ZTS_ERR_RESULT = -4;
/** (-5) Consider filing a bug report */
public static int ZTS_ERR_GENERAL = -5;
//----------------------------------------------------------------------------//
// zts_errno Error codes //
//----------------------------------------------------------------------------//
/** Operation not permitted (`zts_errno` value) */
public static int ZTS_EPERM = 1;
/** No such file or directory */
public static int ZTS_ENOENT = 2;
/** No such process */
public static int ZTS_ESRCH = 3;
/** Interrupted system call */
public static int ZTS_EINTR = 4;
/** I/O error */
public static int ZTS_EIO = 5;
/** No such device or address */
public static int ZTS_ENXIO = 6;
/** Bad file number */
public static int ZTS_EBADF = 9;
/** Try again */
public static int ZTS_EAGAIN = 11;
/** Operation would block */
public static int ZTS_EWOULDBLOCK = 11;
/** Out of memory */
public static int ZTS_ENOMEM = 12;
/** Permission denied */
public static int ZTS_EACCES = 13;
/** Bad address */
public static int ZTS_EFAULT = 14;
/** Device or resource busy */
public static int ZTS_EBUSY = 16;
/** File exists */
public static int ZTS_EEXIST = 17;
/** No such device */
public static int ZTS_ENODEV = 19;
/** Invalid argument */
public static int ZTS_EINVAL = 22;
/** File table overflow */
public static int ZTS_ENFILE = 23;
/** Too many open files */
public static int ZTS_EMFILE = 24;
/** Function not implemented */
public static int ZTS_ENOSYS = 38;
/** Socket operation on non-socket */
public static int ZTS_ENOTSOCK = 88;
/** Destination address required */
public static int ZTS_EDESTADDRREQ = 89;
/** Message too long */
public static int ZTS_EMSGSIZE = 90;
/** Protocol wrong type for socket */
public static int ZTS_EPROTOTYPE = 91;
/** Protocol not available */
public static int ZTS_ENOPROTOOPT = 92;
/** Protocol not supported */
public static int ZTS_EPROTONOSUPPORT = 93;
/** Socket type not supported */
public static int ZTS_ESOCKTNOSUPPORT = 94;
/** Operation not supported on transport endpoint */
public static int ZTS_EOPNOTSUPP = 95;
/** Protocol family not supported */
public static int ZTS_EPFNOSUPPORT = 96;
/** Address family not supported by protocol */
public static int ZTS_EAFNOSUPPORT = 97;
/** Address already in use */
public static int ZTS_EADDRINUSE = 98;
/** Cannot assign requested address */
public static int ZTS_EADDRNOTAVAIL = 99;
/** Network is down */
public static int ZTS_ENETDOWN = 100;
/** Network is unreachable */
public static int ZTS_ENETUNREACH = 101;
/** Software caused connection abort */
public static int ZTS_ECONNABORTED = 103;
/** Connection reset by peer */
public static int ZTS_ECONNRESET = 104;
/** No buffer space available */
public static int ZTS_ENOBUFS = 105;
/** Transport endpoint is already connected */
public static int ZTS_EISCONN = 106;
/** Transport endpoint is not connected */
public static int ZTS_ENOTCONN = 107;
/** Connection timed out */
public static int ZTS_ETIMEDOUT = 110;
/** No route to host */
public static int ZTS_EHOSTUNREACH = 113;
/** Operation already in progress */
public static int ZTS_EALREADY = 114;
/** Operation now in progress */
public static int ZTS_EINPROGRESS = 115;
//----------------------------------------------------------------------------//
// Misc definitions //
//----------------------------------------------------------------------------//
/**
* Length of human-readable MAC address string
*/
public static int ZTS_MAC_ADDRSTRLEN = 18;
/**
* Max length of human-readable IPv4 string
*/
public static int ZTS_INET_ADDRSTRLEN = 16;
/**
* Max length of human-readable IPv6 string
*/
public static int ZTS_INET6_ADDRSTRLEN = 46;
/**
* Maximum (and required) length of string buffers used to receive
* string-format IP addresses from the API. This is set to `ZTS_INET6_ADDRSTRLEN`
* to handle all cases: `ZTS_AF_INET` and `ZTS_AF_INET6`
*/
public static int ZTS_IP_MAX_STR_LEN = 46;
/**
* Required buffer length to safely receive data store items
*/
public static int ZTS_STORE_DATA_LEN = 4096;
/**
* Maximum length of network short name
*/
public static int ZTS_MAX_NETWORK_SHORT_NAME_LENGTH = 127;
/**
* Maximum number of pushed routes on a network
*/
public static int ZTS_MAX_NETWORK_ROUTES = 32;
/**
* Maximum number of statically assigned IP addresses per network endpoint
* using ZT address management (not DHCP)
*/
public static int ZTS_MAX_ASSIGNED_ADDRESSES = 16;
/**
* Maximum number of direct network paths to a given peer
*/
public static int ZTS_MAX_PEER_NETWORK_PATHS = 16;
/**
* Maximum number of multicast groups a device / network interface can be
* subscribed to at once
*/
public static int ZTS_MAX_MULTICAST_SUBSCRIPTIONS = 1024;
/**
* The length of a human-friendly identity key pair string
*/
public static int ZTS_ID_STR_BUF_LEN = 384;
// public static native int zts_id_new(char* key, int* key_buf_len);
// public static native int zts_id_pair_is_valid(/*const*/ char* key, int len);
public static native int zts_init_from_storage(String path);
public static native int zts_init_set_event_handler(ZeroTierEventListener callbackClass);
public static native int zts_init_set_port(short port);
// public static native int zts_init_from_memory(/*const*/ char* key, int len);
public static native int zts_init_blacklist_if(/*const*/ String prefix, int len);
// public static native int zts_init_set_roots(/*const*/ void* roots_data, int len);
public static native int zts_init_allow_net_cache(int allowed);
public static native int zts_init_allow_peer_cache(int allowed);
public static native int zts_init_allow_roots_cache(int allowed);
public static native int zts_init_allow_id_cache(int allowed);
public static native int zts_addr_is_assigned(long net_id, int family);
public static native String zts_addr_get_str(long net_id, int family);
// public static native int zts_addr_get_all(long net_id, struct sockaddr_storage* addr, int* count);
// public static native int zts_addr_compute_6plane(/*const*/ long net_id, /*const*/ long node_id, struct
// sockaddr_storage* addr); public static native int zts_addr_compute_rfc4193(/*const*/ long net_id, /*const*/ long
// node_id, struct sockaddr_storage* addr);
public static native int zts_addr_compute_rfc4193_str(long net_id, long node_id, String dst, int len);
public static native int zts_addr_compute_6plane_str(long net_id, long node_id, String dst, int len);
public static native long zts_net_compute_adhoc_id(short start_port, short end_port);
public static native int zts_net_join(long net_id);
public static native int zts_net_leave(long net_id);
public static native int zts_net_transport_is_ready(/*const*/ long net_id);
public static native long zts_net_get_mac(long net_id);
public static native String zts_net_get_mac_str(long net_id);
public static native int zts_net_get_broadcast(long net_id);
public static native int zts_net_get_mtu(long net_id);
public static native int zts_net_get_name(long net_id, String dst, int len);
public static native int zts_net_get_status(long net_id);
public static native int zts_net_get_type(long net_id);
public static native int zts_route_is_assigned(long net_id, int family);
public static native int zts_node_start();
public static native int zts_node_is_online();
public static native long zts_node_get_id();
// public static native int zts_node_get_id_pair(char* key, int* key_buf_len);
public static native int zts_node_get_port();
public static native int zts_node_stop();
public static native int zts_node_free();
public static native int zts_moon_orbit(long moon_roots_id, long moon_seed);
public static native int zts_moon_deorbit(long moon_roots_id);
public static native int zts_connect(int fd, String ipstr, int port, int timeout_ms);
public static native int zts_bind(int fd, String ipstr, int port);
// public static native int zts_accept(int fd, String remote_addr, int len, int* port);
public static native int zts_set_no_delay(int fd, int enabled);
public static native int zts_get_no_delay(int fd);
public static native int zts_set_linger(int fd, int enabled, int value);
public static native int zts_get_linger_enabled(int fd);
public static native int zts_get_linger_value(int fd);
public static native int zts_get_pending_data_size(int fd);
public static native int zts_set_reuse_addr(int fd, int enabled);
public static native int zts_get_reuse_addr(int fd);
public static native int zts_set_recv_timeout(int fd, int seconds, int microseconds);
public static native int zts_get_recv_timeout(int fd);
public static native int zts_set_send_timeout(int fd, int seconds, int microseconds);
public static native int zts_get_send_timeout(int fd);
public static native int zts_set_send_buf_size(int fd, int size);
public static native int zts_get_send_buf_size(int fd);
public static native int zts_set_recv_buf_size(int fd, int size);
public static native int zts_get_recv_buf_size(int fd);
public static native int zts_set_ttl(int fd, int ttl);
public static native int zts_get_ttl(int fd);
public static native int zts_set_blocking(int fd, int enabled);
public static native int zts_get_blocking(int fd);
public static native int zts_set_keepalive(int fd, int enabled);
public static native int zts_get_keepalive(int fd);
// struct hostent* gethostbyname(/*const*/ String name);
// public static native int zts_dns_set_server(uint8_t index, /*const*/ ip_addr* addr);
// ip_addr* dns_get_server(uint8_t index);
public static native int zts_core_lock_obtain();
public static native int zts_core_lock_release();
public static native int zts_core_query_addr_count(long net_id);
public static native int zts_core_query_addr(long net_id, int idx, String addr, int len);
public static native int zts_core_query_route_count(long net_id);
/*
public static native int zts_core_query_route(
long net_id,
int idx,
String target,
String via,
int len,
short* flags,
short* metric);
*/
public static native int zts_core_query_path_count(long peer_id);
public static native int zts_core_query_path(long peer_id, int idx, String dst, int len);
public static native int zts_core_query_mc_count(long net_id);
// public static native int zts_core_query_mc(long net_id, int idx, long* mac, uint32_t* adi);
/*
public static native int zts_util_roots_new(
char* roots_out,
int* roots_len,
char* prev_key,
int* prev_key_len,
char* curr_key,
int* curr_key_len,
long id,
long ts,
roots_t* roots_spec);
*/
public static native void zts_util_delay(long milliseconds);
public static native int zts_bsd_socket(int family, int type, int protocol);
public static native int zts_bsd_listen(int fd, int backlog);
public static native int zts_bsd_accept(int fd, ZeroTierSocketAddress addr);
public static native int zts_bsd_read(int fd, byte[] buf);
public static native int zts_bsd_read_offset(int fd, byte[] buf, int offset, int len);
public static native int zts_bsd_read_length(int fd, byte[] buf, int len);
public static native int zts_bsd_recv(int fd, byte[] buf, int flags);
public static native int zts_bsd_recvfrom(int fd, byte[] buf, int flags, ZeroTierSocketAddress addr);
public static native int zts_bsd_write(int fd, byte[] buf);
public static native int zts_bsd_write_byte(int fd, byte b);
public static native int zts_bsd_write_offset(int fd, byte[] buf, int offset, int len);
public static native int zts_bsd_sendto(int fd, byte[] buf, int flags, ZeroTierSocketAddress addr);
public static native int zts_bsd_send(int fd, byte[] buf, int flags);
public static native int zts_bsd_shutdown(int fd, int how);
public static native int zts_bsd_close(int fd);
public static native boolean zts_bsd_getsockname(int fd, ZeroTierSocketAddress addr);
public static native int zts_bsd_getpeername(int fd, ZeroTierSocketAddress addr);
public static native int zts_bsd_fcntl(int sock, int cmd, int flag);
// public static native int zts_bsd_ioctl(int fd, long request, ZeroTierIoctlArg arg);
public static native int zts_bsd_select(
int nfds,
ZeroTierFileDescriptorSet readfds,
ZeroTierFileDescriptorSet writefds,
ZeroTierFileDescriptorSet exceptfds,
int timeout_sec,
int timeout_usec);
}