339 lines
18 KiB
C++
339 lines
18 KiB
C++
/*
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* ZeroTier One - Network Virtualization Everywhere
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* Copyright (C) 2011-2015 ZeroTier, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* --
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*
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* ZeroTier may be used and distributed under the terms of the GPLv3, which
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* are available at: http://www.gnu.org/licenses/gpl-3.0.html
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*
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* If you would like to embed ZeroTier into a commercial application or
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* redistribute it in a modified binary form, please contact ZeroTier Networks
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* LLC. Start here: http://www.zerotier.com/
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*/
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#ifndef SDK_LWIPSTACK_H
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#define SDK_LWIPSTACK_H
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#include "lwip/mem.h"
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#include "lwip/pbuf.h"
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#include "lwip/ip_addr.h"
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#include "lwip/netif.h"
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#include "lwip/init.h"
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//#include "lwip/tcp_impl.h"
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#include "lwip/udp.h"
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#include <stdio.h>
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#include <dlfcn.h>
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#ifdef D_GNU_SOURCE
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#define _GNU_SOURCE
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#endif
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//typedef ip_addr ip_addr_t;
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struct tcp_pcb;
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// lwip General Stack API
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#define PBUF_FREE_SIG struct pbuf *p
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#define PBUF_ALLOC_SIG pbuf_layer layer, u16_t length, pbuf_type type
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#define LWIP_HTONS_SIG u16_t x
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#define LWIP_NTOHS_SIG u16_t x
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#define IPADDR_NTOA_SIG const ip_addr_t *addr
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#if defined(LWIP_VERSION_2)
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#define ETHARP_OUTPUT_SIG struct netif *netif, struct pbuf *q, const ip_addr_t *ipaddr
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#elif defined (LWIP_VERSION_1)
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#define ETHARP_OUTPUT_SIG struct netif *netif, struct pbuf *q, ip_addr_t *ipaddr
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#endif
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#define ETHERNET_INPUT_SIG struct pbuf *p, struct netif *netif
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#define IP_INPUT_SIG struct pbuf *p, struct netif *inp
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#define NETIF_SET_DEFAULT_SIG struct netif *netif
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#define NETIF_ADD_SIG struct netif *netif, ip_addr_t *ipaddr, ip_addr_t *netmask, ip_addr_t *gw, void *state, netif_init_fn init, netif_input_fn input
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#define NETIF_SET_UP_SIG struct netif *netif
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#define NETIF_POLL_SIG struct netif *netif
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// lwIP UDP API
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#define UDP_NEW_SIG void
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#define UDP_CONNECT_SIG struct udp_pcb * pcb, ip_addr_t * ipaddr, u16_t port
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#define UDP_SEND_SIG struct udp_pcb * pcb, struct pbuf * p
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#define UDP_SENDTO_SIG struct udp_pcb *pcb, struct pbuf *p, ip_addr_t *dst_ip, u16_t dst_port
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#define UDP_RECV_SIG struct udp_pcb * pcb, void (* recv)(void * arg, struct udp_pcb * upcb, struct pbuf * p, ip_addr_t * addr, u16_t port), void * recv_arg
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#define UDP_RECVED_SIG struct udp_pcb * pcb, u16_t len
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#define UDP_BIND_SIG struct udp_pcb * pcb, const ip_addr_t * ipaddr, u16_t port
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#define UDP_REMOVE_SIG struct udp_pcb *pcb
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// lwIP TCP API
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#define TCP_WRITE_SIG struct tcp_pcb *pcb, const void *arg, u16_t len, u8_t apiflags
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#define TCP_SENT_SIG struct tcp_pcb * pcb, err_t (* sent)(void * arg, struct tcp_pcb * tpcb, u16_t len)
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#define TCP_NEW_SIG void
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#define TCP_RECV_SIG struct tcp_pcb * pcb, err_t (* recv)(void * arg, struct tcp_pcb * tpcb, struct pbuf * p, err_t err)
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#define TCP_RECVED_SIG struct tcp_pcb * pcb, u16_t len
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#define TCP_SNDBUF_SIG struct tcp_pcb * pcb
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#define TCP_CONNECT_SIG struct tcp_pcb * pcb, ip_addr_t * ipaddr, u16_t port, err_t (* connected)(void * arg, struct tcp_pcb * tpcb, err_t err)
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#define TCP_RECV_SIG struct tcp_pcb * pcb, err_t (* recv)(void * arg, struct tcp_pcb * tpcb, struct pbuf * p, err_t err)
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#define TCP_ERR_SIG struct tcp_pcb * pcb, void (* err)(void * arg, err_t err)
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#define TCP_POLL_SIG struct tcp_pcb * pcb, err_t (* poll)(void * arg, struct tcp_pcb * tpcb), u8_t interval
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#define TCP_ARG_SIG struct tcp_pcb * pcb, void * arg
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#define TCP_CLOSE_SIG struct tcp_pcb * pcb
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#define TCP_ABORT_SIG struct tcp_pcb * pcb
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#define TCP_OUTPUT_SIG struct tcp_pcb * pcb
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#define TCP_ACCEPT_SIG struct tcp_pcb * pcb, err_t (* accept)(void * arg, struct tcp_pcb * newpcb, err_t err)
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#define TCP_LISTEN_SIG struct tcp_pcb * pcb
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#define TCP_LISTEN_WITH_BACKLOG_SIG struct tcp_pcb * pcb, u8_t backlog
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#define TCP_BIND_SIG struct tcp_pcb * pcb, ip_addr_t * ipaddr, u16_t port
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#define TCP_INPUT_SIG struct pbuf *p, struct netif *inp
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void dwr(int level, const char *fmt, ... );
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namespace ZeroTier {
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/**
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* Loads an instance of liblwip.so in a private memory arena
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*
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* This uses dlmopen() to load an instance of the LWIP stack into its
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* own private memory space. This is done to get around the stack's
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* lack of thread-safety or multi-instance support. The alternative
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* would be to massively refactor the stack so everything lives in a
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* state object instead of static memory space.
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*/
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class LWIPStack
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{
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public:
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void *_libref;
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void close() {
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#if defined(__STATIC__LWIP__)
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return;
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#elif defined(__DYNAMIC_LWIP__)
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dlclose(_libref);
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#endif
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}
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void (*_lwip_init)();
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err_t (*_tcp_write)(TCP_WRITE_SIG);
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void (*_tcp_sent)(TCP_SENT_SIG);
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struct tcp_pcb * (*_tcp_new)(TCP_NEW_SIG);
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u16_t (*_tcp_sndbuf)(TCP_SNDBUF_SIG);
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err_t (*_tcp_connect)(TCP_CONNECT_SIG);
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struct udp_pcb * (*_udp_new)(UDP_NEW_SIG);
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err_t (*_udp_connect)(UDP_CONNECT_SIG);
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err_t (*_udp_send)(UDP_SEND_SIG);
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err_t (*_udp_sendto)(UDP_SENDTO_SIG);
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void (*_udp_recv)(UDP_RECV_SIG);
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void (*_udp_recved)(UDP_RECVED_SIG);
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err_t (*_udp_bind)(UDP_BIND_SIG);
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void (*_udp_remove)(UDP_REMOVE_SIG);
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void (*_tcp_recv)(TCP_RECV_SIG);
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void (*_tcp_recved)(TCP_RECVED_SIG);
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void (*_tcp_err)(TCP_ERR_SIG);
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void (*_tcp_poll)(TCP_POLL_SIG);
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void (*_tcp_arg)(TCP_ARG_SIG);
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err_t (*_tcp_close)(TCP_CLOSE_SIG);
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void (*_tcp_abort)(TCP_ABORT_SIG);
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err_t (*_tcp_output)(TCP_OUTPUT_SIG);
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void (*_tcp_accept)(TCP_ACCEPT_SIG);
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struct tcp_pcb * (*_tcp_listen)(TCP_LISTEN_SIG);
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struct tcp_pcb * (*_tcp_listen_with_backlog)(TCP_LISTEN_WITH_BACKLOG_SIG);
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err_t (*_tcp_bind)(TCP_BIND_SIG);
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void (*_etharp_tmr)(void);
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void (*_tcp_tmr)(void);
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u8_t (*_pbuf_free)(PBUF_FREE_SIG);
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struct pbuf * (*_pbuf_alloc)(PBUF_ALLOC_SIG);
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u16_t (*_lwip_htons)(LWIP_HTONS_SIG);
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u16_t (*_lwip_ntohs)(LWIP_NTOHS_SIG);
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char* (*_ipaddr_ntoa)(IPADDR_NTOA_SIG);
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err_t (*_etharp_output)(ETHARP_OUTPUT_SIG);
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err_t (*_ethernet_input)(ETHERNET_INPUT_SIG);
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void (*_tcp_input)(TCP_INPUT_SIG);
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err_t (*_ip_input)(IP_INPUT_SIG);
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void (*_netif_set_default)(NETIF_SET_DEFAULT_SIG);
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struct netif * (*_netif_add)(NETIF_ADD_SIG);
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void (*_netif_set_up)(NETIF_SET_UP_SIG);
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void (*_netif_poll)(NETIF_POLL_SIG);
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Mutex _lock;
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LWIPStack(const char* path) :
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_libref(NULL)
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{
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#if defined(__ANDROID__) || defined(__UNITY_3D__)
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#define __STATIC_LWIP__
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#elif defined(__linux__)
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#define __DYNAMIC_LWIP__
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// Dynamically load liblwip.so
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_libref = dlmopen(LM_ID_NEWLM, path, RTLD_NOW);
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#elif defined(__APPLE__)
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#include "TargetConditionals.h"
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#if TARGET_IPHONE_SIMULATOR || TARGET_OS_IPHONE
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#include "node/Mutex.hpp"
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#define __STATIC_LWIP__
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// iOS Simulator or iOS device
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// Do nothing, symbols are statically-linked
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#elif TARGET_OS_MAC && !defined(SDK_BUNDLED)
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#define __DYNAMIC_LWIP__
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// Dynamically load liblwip.so
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_libref = dlopen(path, RTLD_NOW);
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#else
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#define __STATIC_LWIP__
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#endif
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#endif
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#ifdef __STATIC_LWIP__ // Set static references (for use in iOS)
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_ethernet_input = (err_t(*)(ETHERNET_INPUT_SIG))ðernet_input;
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_etharp_output = (err_t(*)(ETHARP_OUTPUT_SIG))ðarp_output;
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_lwip_init = (void(*)(void))&lwip_init;
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_tcp_write = (err_t(*)(TCP_WRITE_SIG))&tcp_write;
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_tcp_sent = (void(*)(TCP_SENT_SIG))&tcp_sent;
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_tcp_new = (struct tcp_pcb*(*)(TCP_NEW_SIG))&tcp_new;
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_udp_new = (struct udp_pcb*(*)(UDP_NEW_SIG))&udp_new;
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_udp_connect = (err_t(*)(UDP_CONNECT_SIG))&udp_connect;
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_udp_send = (err_t(*)(UDP_SEND_SIG))&udp_send;
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_udp_sendto = (err_t(*)(UDP_SENDTO_SIG))&udp_sendto;
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_udp_recv = (void(*)(UDP_RECV_SIG))&udp_recv;
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_udp_bind = (err_t(*)(UDP_BIND_SIG))&udp_bind;
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_udp_remove = (void(*)(UDP_REMOVE_SIG))&udp_remove;
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_tcp_connect = (err_t(*)(TCP_CONNECT_SIG))&tcp_connect;
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_tcp_recv = (void(*)(TCP_RECV_SIG))&tcp_recv;
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_tcp_recved = (void(*)(TCP_RECVED_SIG))&tcp_recved;
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_tcp_err = (void(*)(TCP_ERR_SIG))&tcp_err;
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_tcp_poll = (void(*)(TCP_POLL_SIG))&tcp_poll;
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_tcp_arg = (void(*)(TCP_ARG_SIG))&tcp_arg;
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_tcp_close = (err_t(*)(TCP_CLOSE_SIG))&tcp_close;
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_tcp_abort = (void(*)(TCP_ABORT_SIG))&tcp_abort;
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_tcp_output = (err_t(*)(TCP_OUTPUT_SIG))&tcp_output;
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_tcp_accept = (void(*)(TCP_ACCEPT_SIG))&tcp_accept;
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_tcp_listen_with_backlog = (struct tcp_pcb*(*)(TCP_LISTEN_WITH_BACKLOG_SIG))&tcp_listen_with_backlog;
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_tcp_bind = (err_t(*)(TCP_BIND_SIG))&tcp_bind;
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_etharp_tmr = (void(*)(void))ðarp_tmr;
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_tcp_tmr = (void(*)(void))&tcp_tmr;
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_pbuf_free = (u8_t(*)(PBUF_FREE_SIG))&pbuf_free;
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_pbuf_alloc = (struct pbuf*(*)(PBUF_ALLOC_SIG))&pbuf_alloc;
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_lwip_htons = (u16_t(*)(LWIP_HTONS_SIG))&lwip_htons;
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_lwip_ntohs = (u16_t(*)(LWIP_NTOHS_SIG))&lwip_ntohs;
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_ipaddr_ntoa = (char*(*)(IPADDR_NTOA_SIG))&ipaddr_ntoa;
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_tcp_input = (void(*)(TCP_INPUT_SIG))&tcp_input;
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_ip_input = (err_t(*)(IP_INPUT_SIG))&ip_input;
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_netif_set_default = (void(*)(NETIF_SET_DEFAULT_SIG))&netif_set_default;
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_netif_add = (struct netif*(*)(NETIF_ADD_SIG))&netif_add;
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_netif_set_up = (void(*)(NETIF_SET_UP_SIG))&netif_set_up;
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#endif
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#ifdef __DYNAMIC_LWIP__ // Use dynamically-loaded symbols (for use in normal desktop applications)
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if(_libref == NULL)
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printf("dlerror(): %s\n", dlerror());
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_ethernet_input = (err_t(*)(ETHERNET_INPUT_SIG))dlsym(_libref, "ethernet_input");
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_etharp_output = (err_t(*)(ETHARP_OUTPUT_SIG))dlsym(_libref, "etharp_output");
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_lwip_init = (void(*)(void))dlsym(_libref, "lwip_init");
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_tcp_write = (err_t(*)(TCP_WRITE_SIG))dlsym(_libref, "tcp_write");
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_tcp_sent = (void(*)(TCP_SENT_SIG))dlsym(_libref, "tcp_sent");
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_tcp_new = (struct tcp_pcb*(*)(TCP_NEW_SIG))dlsym(_libref, "tcp_new");
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_udp_new = (struct udp_pcb*(*)(UDP_NEW_SIG))dlsym(_libref, "udp_new");
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_udp_connect = (err_t(*)(UDP_CONNECT_SIG))dlsym(_libref, "udp_connect");
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_udp_send = (err_t(*)(UDP_SEND_SIG))dlsym(_libref, "udp_send");
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_udp_sendto = (err_t(*)(UDP_SENDTO_SIG))dlsym(_libref, "udp_sendto");
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_udp_recv = (void(*)(UDP_RECV_SIG))dlsym(_libref, "udp_recv");
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_udp_bind = (err_t(*)(UDP_BIND_SIG))dlsym(_libref, "udp_bind");
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_udp_remove = (void(*)(UDP_REMOVE_SIG))dlsym(_libref, "udp_remove");
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_tcp_sndbuf = (u16_t(*)(TCP_SNDBUF_SIG))dlsym(_libref, "tcp_sndbuf");
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_tcp_connect = (err_t(*)(TCP_CONNECT_SIG))dlsym(_libref, "tcp_connect");
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_tcp_recv = (void(*)(TCP_RECV_SIG))dlsym(_libref, "tcp_recv");
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_tcp_recved = (void(*)(TCP_RECVED_SIG))dlsym(_libref, "tcp_recved");
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_tcp_err = (void(*)(TCP_ERR_SIG))dlsym(_libref, "tcp_err");
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_tcp_poll = (void(*)(TCP_POLL_SIG))dlsym(_libref, "tcp_poll");
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_tcp_arg = (void(*)(TCP_ARG_SIG))dlsym(_libref, "tcp_arg");
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_tcp_close = (err_t(*)(TCP_CLOSE_SIG))dlsym(_libref, "tcp_close");
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_tcp_abort = (void(*)(TCP_ABORT_SIG))dlsym(_libref, "tcp_abort");
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_tcp_output = (err_t(*)(TCP_OUTPUT_SIG))dlsym(_libref, "tcp_output");
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_tcp_accept = (void(*)(TCP_ACCEPT_SIG))dlsym(_libref, "tcp_accept");
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_tcp_listen = (struct tcp_pcb*(*)(TCP_LISTEN_SIG))dlsym(_libref, "tcp_listen");
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_tcp_listen_with_backlog = (struct tcp_pcb*(*)(TCP_LISTEN_WITH_BACKLOG_SIG))dlsym(_libref, "tcp_listen_with_backlog");
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_tcp_bind = (err_t(*)(TCP_BIND_SIG))dlsym(_libref, "tcp_bind");
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_etharp_tmr = (void(*)(void))dlsym(_libref, "etharp_tmr");
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_tcp_tmr = (void(*)(void))dlsym(_libref, "tcp_tmr");
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_pbuf_free = (u8_t(*)(PBUF_FREE_SIG))dlsym(_libref, "pbuf_free");
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_pbuf_alloc = (struct pbuf*(*)(PBUF_ALLOC_SIG))dlsym(_libref, "pbuf_alloc");
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_lwip_htons = (u16_t(*)(LWIP_HTONS_SIG))dlsym(_libref, "lwip_htons");
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_lwip_ntohs = (u16_t(*)(LWIP_NTOHS_SIG))dlsym(_libref, "lwip_ntohs");
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_ipaddr_ntoa = (char*(*)(IPADDR_NTOA_SIG))dlsym(_libref, "ipaddr_ntoa");
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_tcp_input = (void(*)(TCP_INPUT_SIG))dlsym(_libref, "tcp_input");
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_ip_input = (err_t(*)(IP_INPUT_SIG))dlsym(_libref, "ip_input");
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_netif_set_default = (void(*)(NETIF_SET_DEFAULT_SIG))dlsym(_libref, "netif_set_default");
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_netif_add = (struct netif*(*)(NETIF_ADD_SIG))dlsym(_libref, "netif_add");
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_netif_set_up = (void(*)(NETIF_SET_UP_SIG))dlsym(_libref, "netif_set_up");
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#endif
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}
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~LWIPStack()
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{
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if (_libref)
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dlclose(_libref);
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}
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inline void __lwip_init() throw() { Mutex::Lock _l(_lock); return _lwip_init(); }
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inline err_t __tcp_write(TCP_WRITE_SIG) throw() { Mutex::Lock _l(_lock); return _tcp_write(pcb,arg,len,apiflags); }
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inline void __tcp_sent(TCP_SENT_SIG) throw() { Mutex::Lock _l(_lock); return _tcp_sent(pcb,sent); }
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inline struct tcp_pcb * __tcp_new(TCP_NEW_SIG) throw() { Mutex::Lock _l(_lock); return _tcp_new(); }
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inline struct udp_pcb * __udp_new(UDP_NEW_SIG) throw() { Mutex::Lock _l(_lock); return _udp_new(); }
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inline err_t __udp_connect(UDP_CONNECT_SIG) throw() { Mutex::Lock _l(_lock); return _udp_connect(pcb,ipaddr,port); }
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inline err_t __udp_send(UDP_SEND_SIG) throw() { Mutex::Lock _l(_lock); return _udp_send(pcb,p); }
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inline err_t __udp_sendto(UDP_SENDTO_SIG) throw() { Mutex::Lock _l(_lock); return _udp_sendto(pcb,p,dst_ip,dst_port); }
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inline void __udp_recv(UDP_RECV_SIG) throw() { Mutex::Lock _l(_lock); return _udp_recv(pcb,recv,recv_arg); }
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inline err_t __udp_bind(UDP_BIND_SIG) throw() { Mutex::Lock _l(_lock); return _udp_bind(pcb,ipaddr,port); }
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inline void __udp_remove(UDP_REMOVE_SIG) throw() { Mutex::Lock _l(_lock); return _udp_remove(pcb); }
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inline u16_t __tcp_sndbuf(TCP_SNDBUF_SIG) throw() { Mutex::Lock _l(_lock); return _tcp_sndbuf(pcb); }
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inline err_t __tcp_connect(TCP_CONNECT_SIG) throw() { Mutex::Lock _l(_lock); return _tcp_connect(pcb,ipaddr,port,connected); }
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inline void __tcp_recv(TCP_RECV_SIG) throw() { Mutex::Lock _l(_lock); return _tcp_recv(pcb,recv); }
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inline void __tcp_recved(TCP_RECVED_SIG) throw() { Mutex::Lock _l(_lock); return _tcp_recved(pcb,len); }
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inline void __tcp_err(TCP_ERR_SIG) throw() { Mutex::Lock _l(_lock); return _tcp_err(pcb,err); }
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inline void __tcp_poll(TCP_POLL_SIG) throw() { Mutex::Lock _l(_lock); return _tcp_poll(pcb,poll,interval); }
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inline void __tcp_arg(TCP_ARG_SIG) throw() { Mutex::Lock _l(_lock); return _tcp_arg(pcb,arg); }
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inline err_t __tcp_close(TCP_CLOSE_SIG) throw() { Mutex::Lock _l(_lock); return _tcp_close(pcb); }
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inline void __tcp_abort(TCP_ABORT_SIG) throw() { Mutex::Lock _l(_lock); return _tcp_abort(pcb); }
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inline err_t __tcp_output(TCP_OUTPUT_SIG) throw() { Mutex::Lock _l(_lock); return _tcp_output(pcb); }
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inline void __tcp_accept(TCP_ACCEPT_SIG) throw() { Mutex::Lock _l(_lock); return _tcp_accept(pcb,accept); }
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inline struct tcp_pcb * __tcp_listen(TCP_LISTEN_SIG) throw() { Mutex::Lock _l(_lock); return _tcp_listen(pcb); }
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inline struct tcp_pcb * __tcp_listen_with_backlog(TCP_LISTEN_WITH_BACKLOG_SIG) throw() { Mutex::Lock _l(_lock); return _tcp_listen_with_backlog(pcb,backlog); }
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inline err_t __tcp_bind(TCP_BIND_SIG) throw() { Mutex::Lock _l(_lock); return _tcp_bind(pcb,ipaddr,port); }
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inline void __etharp_tmr(void) throw() { Mutex::Lock _l(_lock); return _etharp_tmr(); }
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inline void __tcp_tmr(void) throw() { Mutex::Lock _l(_lock); return _tcp_tmr(); }
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inline u8_t __pbuf_free(PBUF_FREE_SIG) throw() { Mutex::Lock _l(_lock); return _pbuf_free(p); }
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inline struct pbuf * __pbuf_alloc(PBUF_ALLOC_SIG) throw() { Mutex::Lock _l(_lock); return _pbuf_alloc(layer,length,type); }
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inline u16_t __lwip_htons(LWIP_HTONS_SIG) throw() { Mutex::Lock _l(_lock); return _lwip_htons(x); }
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inline u16_t __lwip_ntohs(LWIP_NTOHS_SIG) throw() { Mutex::Lock _l(_lock); return _lwip_ntohs(x); }
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inline char* __ipaddr_ntoa(IPADDR_NTOA_SIG) throw() { Mutex::Lock _l(_lock); return _ipaddr_ntoa(addr); }
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inline err_t __etharp_output(ETHARP_OUTPUT_SIG) throw() { Mutex::Lock _l(_lock); return _etharp_output(netif,q,ipaddr); }
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inline err_t __ethernet_input(ETHERNET_INPUT_SIG) throw() { Mutex::Lock _l(_lock); return _ethernet_input(p,netif); }
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inline void __tcp_input(TCP_INPUT_SIG) throw() { Mutex::Lock _l(_lock); return _tcp_input(p,inp); }
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inline err_t __ip_input(IP_INPUT_SIG) throw() { Mutex::Lock _l(_lock); return _ip_input(p,inp); }
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inline void __netif_set_default(NETIF_SET_DEFAULT_SIG) throw() { Mutex::Lock _l(_lock); return _netif_set_default(netif); }
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inline struct netif * __netif_add(NETIF_ADD_SIG) throw() { Mutex::Lock _l(_lock); return _netif_add(netif,ipaddr,netmask,gw,state,init,input); }
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inline void __netif_set_up(NETIF_SET_UP_SIG) throw() { Mutex::Lock _l(_lock); return _netif_set_up(netif); }
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};
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} // namespace ZeroTier
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#endif
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