partially-working picoTCP integration
This commit is contained in:
Joseph Henry
188
src/SDK_pico.hpp
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188
src/SDK_pico.hpp
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/*
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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_PICOSTACK_H
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#define SDK_PICOSTACK_H
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#include "Mutex.hpp"
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#include "OSUtils.hpp"
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#include "SDK_Debug.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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#if defined(SDK_LWIP)
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#include "SDK_lwip.hpp"
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#elif defined(SDK_PICOTCP)
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#include "SDK_pico.hpp"
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#include "pico_stack.h"
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#include "pico_ipv4.h"
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#include "pico_icmp4.h"
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#include "pico_dev_tap.h"
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#elif defined(SDK_JIP)
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#include "SDK_jip.hpp"
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#endif
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#define PICO_STRING_TO_IPV4_SIG const char *ipstr, uint32_t *ip
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#define PICO_IPV4_TO_STRING_SIG char *ipbuf, const uint32_t ip
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#define PICO_TAP_CREATE_SIG char *name
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#define PICO_IPV4_LINK_ADD_SIG struct pico_device *dev, struct pico_ip4 address, struct pico_ip4 netmask
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#define PICO_DEVICE_INIT_SIG struct pico_device *dev, const char *name, uint8_t *mac
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#define PICO_STACK_RECV_SIG struct pico_device *dev, uint8_t *buffer, uint32_t len
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#define PICO_ICMP4_PING_SIG char *dst, int count, int interval, int timeout, int size, void (*cb)(struct pico_icmp4_stats *)
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namespace ZeroTier {
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/**
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* Loads an instance of picoTCP stack library 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 picoTCP_stack
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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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// SIP-
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void (*_pico_stack_init)(void);
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void (*_pico_stack_tick)(void);
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int (*_pico_string_to_ipv4)(PICO_STRING_TO_IPV4_SIG);
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int (*_pico_ipv4_to_string)(PICO_IPV4_TO_STRING_SIG);
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struct pico_device* (*_pico_tap_create)(PICO_TAP_CREATE_SIG);
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int (*_pico_ipv4_link_add)(PICO_IPV4_LINK_ADD_SIG);
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int (*_pico_device_init)(PICO_DEVICE_INIT_SIG);
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int32_t (*_pico_stack_recv)(PICO_STACK_RECV_SIG);
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int (*_pico_icmp4_ping)(PICO_ICMP4_PING_SIG);
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Mutex _lock;
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Mutex _lock_mem;
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picoTCP_stack(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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// SIP-
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_pico_stack_init = (void(*)(void))&pico_stack_init;
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_pico_stack_tick = (void(*)(void))&pico_stack_tick;
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_pico_tap_create = (struct pico_device*(*)(PICO_TAP_CREATE_SIG)&pico_tap_create;
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_pico_string_to_ipv4 = (int(*)(PICO_STRING_TO_IPV4_SIG))&pico_string_to_ipv4;
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_pico_ipv4_to_string = (int(*)(PICO_IPV4_TO_STRING_SIG))&pico_ipv4_to_string;
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_pico_ipv4_link_add = (int(*)(PICO_IPV4_LINK_ADD_SIG))&pico_ipv4_link_add;
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_pico_device_init = (int(*)(PICO_DEVICE_INIT_SIG))&pico_device_init;
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_pico_stack_recv = (int32_t(*)(PICO_STACK_RECV_SIG))&pico_stack_recv;
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_pico_icmp4_ping = (int(*)(PICO_ICMP4_PING_SIG))&pico_icmp4_ping;
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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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DEBUG_ERROR("dlerror(): %s", dlerror());
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// SIP-
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_pico_stack_init = (void(*)(void))dlsym(_libref, "pico_stack_init");
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_pico_stack_tick = (void(*)(void))dlsym(_libref, "pico_stack_tick");
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_pico_tap_create = (struct pico_device*(*)(PICO_TAP_CREATE_SIG))dlsym(_libref, "pico_tap_create");
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_pico_string_to_ipv4 = (int(*)(PICO_STRING_TO_IPV4_SIG))dlsym(_libref, "pico_string_to_ipv4");
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_pico_ipv4_to_string = (int(*)(PICO_IPV4_TO_STRING_SIG))dlsym(_libref, "pico_ipv4_to_string");
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_pico_ipv4_link_add = (int(*)(PICO_IPV4_LINK_ADD_SIG))dlsym(_libref, "pico_ipv4_link_add");
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_pico_device_init = (int(*)(PICO_DEVICE_INIT_SIG))dlsym(_libref, "pico_device_init");
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_pico_stack_recv = (int32_t(*)(PICO_STACK_RECV_SIG))dlsym(_libref, "pico_stack_recv");
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_pico_icmp4_ping = (int(*)(PICO_ICMP4_PING_SIG))dlsym(_libref, "pico_icmp4_ping");
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#endif
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}
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~picoTCP_stack()
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{
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if (_libref)
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dlclose(_libref);
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}
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// SIP-
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inline void __pico_stack_init(void) throw() { Mutex::Lock _l(_lock); _pico_stack_init(); }
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inline void __pico_stack_tick(void) throw() { Mutex::Lock _l(_lock); _pico_stack_tick(); }
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inline struct pico_device * __pico_tap_create(PICO_TAP_CREATE_SIG) throw() { Mutex::Lock _l(_lock); return _pico_tap_create(name); }
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inline int __pico_string_to_ipv4(PICO_STRING_TO_IPV4_SIG) throw() { Mutex::Lock _l(_lock); return _pico_string_to_ipv4(ipstr, ip); }
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inline int __pico_ipv4_to_string(PICO_IPV4_TO_STRING_SIG) throw() { Mutex::Lock _l(_lock); return _pico_ipv4_to_string(ipbuf, ip); }
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inline int __pico_ipv4_link_add(PICO_IPV4_LINK_ADD_SIG) throw() { Mutex::Lock _l(_lock); return _pico_ipv4_link_add(dev, address, netmask); }
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inline int __pico_device_init(PICO_DEVICE_INIT_SIG) throw() { Mutex::Lock _l(_lock); return _pico_device_init(dev, name, mac); }
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inline int __pico_stack_recv(PICO_STACK_RECV_SIG) throw() { /*Mutex::Lock _l(_lock);*/ return _pico_stack_recv(dev, buffer, len); }
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inline int __pico_icmp4_ping(PICO_ICMP4_PING_SIG) throw() { Mutex::Lock _l(_lock); return _pico_icmp4_ping(dst, count, interval, timeout, size, cb); }
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};
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} // namespace ZeroTier
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#endif
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