Windows Support

Makefile

@@ -36,6 +36,18 @@ endif
 OSTYPE=$(shell uname -s | tr '[A-Z]' '[a-z]')
 BUILD=build/$(OSTYPE)
 
+# Windows
+ifeq ($(OSTYPE),mingw32_nt-6.2)
+ARTOOL=ar
+ARFLAGS=rcs
+CC=gcc
+CXX=g++
+CXXFLAGS+=-Wno-unknown-pragmas -Wno-pointer-arith -Wno-deprecated-declarations -Wno-conversion-null
+WINDEFS=-lws2_32 -lshlwapi -liphlpapi -static -static-libgcc -static-libstdc++
+CONTRIBDIR=ext/lwip-contrib
+LWIPARCH=$(CONTRIBDIR)/ports/win32
+LWIPARCHINCLUDE=$(LWIPARCH)/include
+endif
 # Darwin
 ifeq ($(OSTYPE),darwin)
 ARTOOL=libtool
@@ -147,7 +159,7 @@ ifeq ($(SDK_JNI), 1)
 	LIBZT_DEFS+=-DSDK_JNI
 endif
 
-CXXFLAGS=$(CFLAGS) -Wno-format -fno-rtti -std=c++11
+CXXFLAGS+=$(CFLAGS) -Wno-format -fno-rtti -std=c++11
 ZT_DEFS+=-DZT_SDK -DZT_SOFTWARE_UPDATE_DEFAULT="\"disable\""
 LIBZT_FILES:=src/VirtualTap.cpp src/libzt.cpp src/Utilities.cpp
 STATIC_LIB=$(BUILD)/libzt.a
@@ -211,9 +223,8 @@ endif
 STACK_DRIVER_DEFS+=-DLWIP_DONT_PROVIDE_BYTEORDER_FUNCTIONS
 STACK_DRIVER_DEFS+=-DSTACK_LWIP
 STACK_DRIVER_FILES:=src/lwIP.cpp
-LWIPARCH=$(CONTRIBDIR)/ports/unix
 LWIPDIR=ext/lwip/src
-STACK_INCLUDES+=-Iext/lwip/src/include/lwip \
+STACK_INCLUDES+=$(LWIPARCHINCLUDE) -Iext/lwip/src/include/lwip \
 	-I$(LWIPDIR)/include \
 	-I$(LWIPARCH)/include \
 	-I$(LWIPDIR)/include/ipv4 \
@@ -349,7 +360,7 @@ nativetest:
 	@date +"Build script finished on %F %T"
 ztproxy:
 	$(CXX) $(CXXFLAGS) $(SANFLAGS) $(LIBZT_INCLUDES) $(LIBZT_DEFS) $(ZT_INCLUDES) \
-		examples/ztproxy/ztproxy.cpp -o $(BUILD)/ztproxy $< -L$(BUILD) -lzt
+		examples/ztproxy/ztproxy.cpp -o $(BUILD)/ztproxy $< -L$(BUILD) -lzt $(WINDEFS)
 	@./check.sh $(BUILD)/ztproxy
 	@date +"Build script finished on %F %T"
 intercept:

examples/ztproxy/ztproxy.cpp

@@ -26,12 +26,17 @@
 
 #include <unistd.h>
 #include <string.h>
-#include <netdb.h>
+
+#if defined(__linux__) || defined(__APPLE__)
+ #include <netdb.h>
+#endif
+
+//#include "Winsock2.h"
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string>
 #include <fcntl.h>
-#include <regex.h>
 
 #include <vector>
 #include <algorithm>
@@ -39,6 +44,7 @@
 
 #include "RingBuffer.hpp"
 #include "ztproxy.hpp"
+#include "Utilities.h"
 #include "libzt.h"
 
 namespace ZeroTier {
@@ -69,7 +75,11 @@ namespace ZeroTier {
 		in4.sin_addr.s_addr = Utils::hton((uint32_t)(0x7f000001)); // listen for TCP @127.0.0.1
 		in4.sin_port = Utils::hton((uint16_t)proxy_listen_port);
 		_tcpListenSocket = _phy.tcpListen((const struct sockaddr *)&in4,this);
+		if (!_tcpListenSocket) {
+			DEBUG_ERROR("Error binding on port %d for IPv4 HTTP listen socket", proxy_listen_port);
+		}
 		// IPv6
+		/*
 		struct sockaddr_in6 in6;
 		memset((void *)&in6,0,sizeof(in6));
 		in6.sin6_family = AF_INET6;
@@ -77,13 +87,12 @@ namespace ZeroTier {
 		in6.sin6_addr.s6_addr[15] = 1; // IPv6 localhost == ::1
 		in6.sin6_port = Utils::hton((uint16_t)proxy_listen_port);
 		_tcpListenSocket6 = _phy.tcpListen((const struct sockaddr *)&in6,this);
-
+		*/
-		if (!_tcpListenSocket) {
+		/*
-			DEBUG_ERROR("Error binding on port %d for IPv4 HTTP listen socket", proxy_listen_port);
-		}
 		if (!_tcpListenSocket6) {
 			DEBUG_ERROR("Error binding on port %d for IPv6 HTTP listen socket", proxy_listen_port);
 		}
+		*/
 		_thread = Thread::start(this);
 	} 
 
@@ -117,7 +126,7 @@ namespace ZeroTier {
   		// Moves data between client application socket and libzt VirtualSocket 
 		while(_run) {
 
-			_phy.poll(5);
+			_phy.poll(1);
 
 			conn_m.lock();
 			// build fd_sets to select upon
@@ -212,7 +221,6 @@ namespace ZeroTier {
 			exit(0);
 		}
 		if (conn->zfd < 0) { // no connection yet
-			DEBUG_INFO("no connection yet, will establish...");
 			if (host == "") {
 				DEBUG_ERROR("invalid hostname or address (empty)");
 				return;
@@ -256,6 +264,7 @@ namespace ZeroTier {
 			}
 			if (ipv == 6) {
 				//DEBUG_INFO("attempting to proxy [0.0.0.0:%d -> %s:%d]", _proxy_listen_port, host.c_str(), dest_port);
+				/*
 				struct sockaddr_in6 in6;
 				memset(&in6,0,sizeof(in6));
 				in6.sin6_family = AF_INET;
@@ -265,6 +274,7 @@ namespace ZeroTier {
 				in6.sin6_port = Utils::hton(dest_port);			
 				zfd = zts_socket(AF_INET, SOCK_STREAM, 0);
 				err = zts_connect(zfd, (const struct sockaddr *)&in6, sizeof(in6));
+				*/
 			}
 			if (zfd < 0 || err < 0) {
 				// now release TX buffer contents we previously saved, since we can't connect
@@ -287,9 +297,6 @@ namespace ZeroTier {
 			zmap[zfd] = conn;
 			conn_m.unlock();			
 		}
-		else {
-			DEBUG_INFO("connection already established, reusing...");
-		}
 		// Write data coming from client TCP connection to its TX buffer, later emptied into libzt by threadMain I/O loop
 		conn->tx_m.lock();
 		if ((wr = conn->TXbuf->write((const unsigned char *)data, len)) < 0) {
@@ -371,7 +378,7 @@ int main(int argc, char **argv)
 	std::string nwid          = argv[3];
 	std::string internal_addr = argv[4];
 	int internal_port         = atoi(argv[5]);
-	std::string dns_nameserver= argv[6];
+	std::string dns_nameserver= "";//argv[6];
 
 	ZeroTier::ZTProxy *proxy = new ZeroTier::ZTProxy(proxy_listen_port, nwid, path, internal_addr, internal_port, dns_nameserver);
 	

examples/ztproxy/ztproxy.hpp

@@ -34,10 +34,13 @@
 #include "Phy.hpp"
 #include "OSUtils.hpp"
 
+#if defined(__linux__) || defined(__APPLE__)
+ #include <sys/select.h>
+#endif
+
 #include <queue>
 #include <vector>
 #include <stdio.h>
-#include <sys/select.h>
 
 #define BUF_SZ 1024*1024
 

ext/lwip-contrib/ports/win32/include/arch/cc.h

@@ -39,7 +39,7 @@
 #pragma warning (disable: 4820) /* 'x' bytes padding added after data member 'y' */
 #endif
 
-#define LWIP_PROVIDE_ERRNO
+#define LWIP_PROVIDE_ERRNO 0
 
 /* Define platform endianness (might already be defined) */
 #ifndef BYTE_ORDER

ext/lwip/src/api/err.c

@@ -40,7 +40,7 @@
 #include "lwip/def.h"
 #include "lwip/sys.h"
 
-#include "lwip/errno.h"
+#include "errno.h"
 
 #if !NO_SYS
 /** Table to quickly map an lwIP error (err_t) to a socket error

ext/lwip/src/api/sockets.c

@@ -658,10 +658,19 @@ lwip_connect(int s, const struct sockaddr *name, socklen_t namelen)
   }
 
   LWIP_UNUSED_ARG(namelen);
-  if (name->sa_family == AF_UNSPEC) {
+
+  if ( 
+#ifdef __MINGW32__
+        false
+#else
+    name->sa_family == AF_UNSPEC 
+#endif
+    ) 
+  {
     LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d, AF_UNSPEC)\n", s));
     err = netconn_disconnect(sock->conn);
-  } else {
+  } 
+  else {
     ip_addr_t remote_addr;
     u16_t remote_port;
 

include/Debug.hpp

@@ -34,11 +34,14 @@
 #define LIBZT_DEBUG_HPP
 
 #include <pthread.h>
-#include <sys/syscall.h>
 #include <sys/types.h>
 #include <unistd.h>
 #include <cstring>
 
+#if defined(__linux__)
+#include <sys/syscall.h>
+#endif
+
 #include "Platform.h"
 
 #define ZT_MSG_ERROR       true // Errors
@@ -53,7 +56,7 @@
 #if defined(__APPLE__)
 		#include "TargetConditionals.h"
 #endif
-#if defined(ZT_COLOR) && !defined(__ANDROID__) && !defined(TARGET_OS_IPHONE) && !defined(TARGET_IPHONE_SIMULATOR) && !defined(__APP_FRAMEWORK__)
+#if defined(ZT_COLOR) && !defined(__MINGW32__) && !defined(__ANDROID__) && !defined(TARGET_OS_IPHONE) && !defined(TARGET_IPHONE_SIMULATOR) && !defined(__APP_FRAMEWORK__)
 	#define ZT_RED   "\x1B[31m"
 	#define ZT_GRN   "\x1B[32m"
 	#define ZT_YEL   "\x1B[33m"
@@ -88,6 +91,9 @@ extern unsigned int gettid(); // defined in libzt.cpp
 #elif __APPLE__
   #define ZT_THREAD_ID (long)0//(long)gettid()
 #endif
+#ifdef __MINGW32__
+  #define ZT_THREAD_ID (long)0
+#endif
 
 #if defined(__JNI_LIB__)
 		#include <jni.h>

include/Defs.h

@@ -48,7 +48,9 @@
  */
 #define ZTO_ID_LEN                  16
 
+#if !defined(__MINGW32__)
 typedef uint32_t socklen_t;
+#endif
 
 /****************************************************************************/
 /* For SOCK_RAW support, it will initially be modeled after linux's API, so */

include/Utilities.h

@@ -35,6 +35,17 @@
 
 #include "InetAddress.hpp"
 
+#if defined(__MINGW32__)
+ 
+#define NS_INADDRSZ  4
+#define NS_IN6ADDRSZ 16
+#define NS_INT16SZ   2
+
+int inet_pton4(const char *src, void *dst);
+int inet_pton6(const char *src, void *dst);
+int inet_pton(int af, const char *src, void *dst);
+#endif
+
 /**
  * @brief Returns masked address for subnet comparisons
  *
@@ -62,7 +73,7 @@ char *beautify_eth_proto_nums(int proto);
  * @param inet
  * @return
  */
-void sockaddr2inet(int socket_family, const struct sockaddr *addr, ZeroTier::InetAddress *inet);
+//void sockaddr2inet(int socket_family, const struct sockaddr *addr, ZeroTier::InetAddress *inet);
 
 /**
  * @brief Convert a raw MAC address byte array into a human-readable string

include/libzt.h

@@ -33,11 +33,14 @@
 #ifndef LIBZT_H
 #define LIBZT_H
 
-#include <poll.h>
 #include <stdlib.h>
 #include <stdint.h>
 #include <vector>
 
+#if defined(__linux__)
+ #include <poll.h>
+#endif
+
 #include "Debug.hpp"
 #include "Defs.h"
 
@@ -440,7 +443,9 @@ int zts_close(int fd);
  * @param timeout
  * @return
  */
+#if defined(__linux__)
 int zts_poll(struct pollfd *fds, nfds_t nfds, int timeout);
+#endif
 
 /**
  * @brief Monitor multiple file descriptors, waiting until one or more of the file descriptors become "ready"

include/lwIP.hpp

@@ -60,12 +60,12 @@ void lwip_dns_init();
  * @usage lwip_driver_init()
  * @return
  */
-void lwip_start_dhcp(struct netif *interface);
+void lwip_start_dhcp(void *netif);
 
-void general_lwip_init_interface(void *tapref, struct netif *interface, const char *name, const ZeroTier::MAC &mac,
+void general_lwip_init_interface(void *tapref, void *netif, const char *name, const ZeroTier::MAC &mac,
 	const ZeroTier::InetAddress &addr, const ZeroTier::InetAddress &nm, const ZeroTier::InetAddress &gw);
 
-void general_turn_on_interface(struct netif *interface);
+void general_turn_on_interface(void *netif);
 
 /**
  * @brief Set up an interface in the network stack for the VirtualTap.

make-liblwip.mk

@@ -32,21 +32,38 @@
 #
 
 CONTRIBDIR=ext/lwip-contrib
-LWIPARCH=$(CONTRIBDIR)/ports/unix
-
-#Set this to where you have the lwip core module checked out from CVS
-#default assumes it's a dir named lwip at the same level as the contrib module
 LWIPDIR=ext/lwip/src
-
 CCDEP=clang++
+
 # Automagically pick clang or gcc, with preference for clang
 # This is only done if we have not overridden these with an environment or CLI variable
-ifeq ($(origin CCX),default)
+ifeq ($(origin CXX),default)
-	CCX=$(shell if [ -e /usr/bin/clang++ ]; then echo clang++; else echo g++; fi)
+	CXX=$(shell if [ -e /usr/bin/clang++ ]; then echo clang++; else echo g++; fi)
 endif
 
-LWIPINCLUDES:=-I$(LWIPDIR)/include -I$(LWIPARCH) -I$(LWIPDIR) -I. -Iext -Iinclude
+OSTYPE=$(shell uname -s | tr '[A-Z]' '[a-z]')
-CFLAGS=-Wno-format -Wno-deprecated -O3 -g -Wall -fPIC
+BUILD=build/$(OSTYPE)
+
+CCX=clang++
+
+# Windows
+ifeq ($(OSTYPE),mingw32_nt-6.2)
+CCX=g++
+WINDEFS=-Wno-c++11-compat -std=c++98
+LWIPARCH=$(CONTRIBDIR)/ports/win32
+endif
+ifeq ($(OSTYPE),linux)
+LWIPARCH=$(CONTRIBDIR)/ports/unix
+endif
+ifeq ($(OSTYPE),darwin)
+LWIPARCH=$(CONTRIBDIR)/ports/unix
+endif
+ifeq ($(OSTYPE),freebsd)
+LWIPARCH=$(CONTRIBDIR)/ports/unix
+endif
+
+LWIPINCLUDES:=-I$(LWIPDIR)/include -I$(LWIPARCH) -I$(LWIPARCH)/include -I$(LWIPDIR) -I. -Iext -Iinclude
+CFLAGS= $(WINDEFS) -Wno-format -Wno-deprecated -O3 -g -Wall -fPIC
 CFLAGS+=-DLWIP_IPV4 -DLWIP_IPV6=0 -DIPv4 -DLWIP_DEBUG=1 $(LWIPINCLUDES)
 
 UNIXLIB=liblwip.a
@@ -63,8 +80,6 @@ LWIPNOAPPSFILES+=$(ARCHFILES)
 LWIPNOAPPSFILESW=$(wildcard $(LWIPNOAPPSFILES))
 LWIPNOAPPSOBJS=$(notdir $(LWIPNOAPPSFILESW:.c=.o))
 
-CCX=clang++
-
 %.o:
 	$(CCX) $(CFLAGS) -c $(<:.o=.c)
 

src/Platform.cpp

@@ -53,7 +53,8 @@ void handle_general_failure() {
 inline unsigned int gettid()
 {
 #ifdef _WIN32
-		return GetCurrentThreadId();
+		//return GetCurrentThreadId();
+		return 0;
 #elif defined(__linux__)
 		return static_cast<unsigned int>(syscall(__NR_gettid));
 #elif defined(__APPLE__)

src/Utilities.cpp

@@ -32,6 +32,171 @@
 
 #include "InetAddress.hpp"
 #include "Debug.hpp"
+#include "Utilities.h"
+
+#if defined(__MINGW32__)
+
+int inet_pton4(const char *src, void *dst)
+{
+    uint8_t tmp[NS_INADDRSZ], *tp;
+
+    int saw_digit = 0;
+    int octets = 0;
+    *(tp = tmp) = 0;
+
+    int ch;
+    while ((ch = *src++) != '\0')
+    {
+        if (ch >= '0' && ch <= '9')
+        {
+            uint32_t n = *tp * 10 + (ch - '0');
+
+            if (saw_digit && *tp == 0)
+                return 0;
+
+            if (n > 255)
+                return 0;
+
+            *tp = n;
+            if (!saw_digit)
+            {
+                if (++octets > 4)
+                    return 0;
+                saw_digit = 1;
+            }
+        }
+        else if (ch == '.' && saw_digit)
+        {
+            if (octets == 4)
+                return 0;
+            *++tp = 0;
+            saw_digit = 0;
+        }
+        else
+            return 0;
+    }
+    if (octets < 4)
+        return 0;
+
+    memcpy(dst, tmp, NS_INADDRSZ);
+
+    return 1;
+}
+
+int inet_pton6(const char *src, void *dst)
+{
+    static const char xdigits[] = "0123456789abcdef";
+    uint8_t tmp[NS_IN6ADDRSZ];
+
+    uint8_t *tp = (uint8_t*) memset(tmp, '\0', NS_IN6ADDRSZ);
+    uint8_t *endp = tp + NS_IN6ADDRSZ;
+    uint8_t *colonp = NULL;
+
+    /* Leading :: requires some special handling. */
+    if (*src == ':')
+    {
+        if (*++src != ':')
+            return 0;
+    }
+
+    const char *curtok = src;
+    int saw_xdigit = 0;
+    uint32_t val = 0;
+    int ch;
+    while ((ch = tolower(*src++)) != '\0')
+    {
+        const char *pch = strchr(xdigits, ch);
+        if (pch != NULL)
+        {
+            val <<= 4;
+            val |= (pch - xdigits);
+            if (val > 0xffff)
+                return 0;
+            saw_xdigit = 1;
+            continue;
+        }
+        if (ch == ':')
+        {
+            curtok = src;
+            if (!saw_xdigit)
+            {
+                if (colonp)
+                    return 0;
+                colonp = tp;
+                continue;
+            }
+            else if (*src == '\0')
+            {
+                return 0;
+            }
+            if (tp + NS_INT16SZ > endp)
+                return 0;
+            *tp++ = (uint8_t) (val >> 8) & 0xff;
+            *tp++ = (uint8_t) val & 0xff;
+            saw_xdigit = 0;
+            val = 0;
+            continue;
+        }
+        if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) &&
+                inet_pton4(curtok, (char*) tp) > 0)
+        {
+            tp += NS_INADDRSZ;
+            saw_xdigit = 0;
+            break; /* '\0' was seen by inet_pton4(). */
+        }
+        return 0;
+    }
+    if (saw_xdigit)
+    {
+        if (tp + NS_INT16SZ > endp)
+            return 0;
+        *tp++ = (uint8_t) (val >> 8) & 0xff;
+        *tp++ = (uint8_t) val & 0xff;
+    }
+    if (colonp != NULL)
+    {
+        /*
+         * Since some memmove()'s erroneously fail to handle
+         * overlapping regions, we'll do the shift by hand.
+         */
+        const int n = tp - colonp;
+
+        if (tp == endp)
+            return 0;
+
+        for (int i = 1; i <= n; i++)
+        {
+            endp[-i] = colonp[n - i];
+            colonp[n - i] = 0;
+        }
+        tp = endp;
+    }
+    if (tp != endp)
+        return 0;
+
+    memcpy(dst, tmp, NS_IN6ADDRSZ);
+
+    return 1;
+}
+
+int inet_pton(int af, const char *src, void *dst)
+{
+    switch (af)
+    {
+    case AF_INET:
+        return inet_pton4(src, dst);
+    case AF_INET6:
+        return inet_pton6(src, dst);
+    default:
+        return -1;
+    }
+}
+
+#endif
+
+
+
+
 
 char *beautify_eth_proto_nums(int proto)
 {
@@ -120,6 +285,7 @@ bool ipv6_in_subnet(ZeroTier::InetAddress *subnet, ZeroTier::InetAddress *addr)
 	return !strcmp(r.toIpString(b0), b.toIpString(b1));
 }
 
+/*
 void sockaddr2inet(int socket_family, const struct sockaddr *addr, ZeroTier::InetAddress *inet)
 {
 	char ipstr[INET6_ADDRSTRLEN];
@@ -137,6 +303,7 @@ void sockaddr2inet(int socket_family, const struct sockaddr *addr, ZeroTier::Ine
 		inet->fromString(addrstr);
 	}
 }
+*/
 
 void mac2str(char *macbuf, int len, unsigned char* addr)
 {

src/VirtualSocket.cpp

@@ -34,7 +34,10 @@
 #define ZT_VIRTUALSOCKET_HPP
 
 #include <ctime>
+
+#if defined(__linux__) || #defined(__APPLE__)
 #include <sys/socket.h>
+#endif
 
 #include "VirtualSocket.h"
 #include "VirtualBindingPair.h"

src/VirtualTap.cpp

@@ -421,7 +421,7 @@ namespace ZeroTier {
 					target_addr = managed_routes->at(i).target;
 					via_addr = managed_routes->at(i).via;
 					nm = target_addr.netmask();
-					for (int j=0; j<routes.size(); j++) {
+					for (size_t j=0; j<routes.size(); j++) {
 						if (via_addr.ipsEqual(null_addr) || target_addr.ipsEqual(null_addr)) {
 							found=true;
 							continue;
@@ -439,7 +439,7 @@ namespace ZeroTier {
 					}
 				}
 				// check if route exists in tap but not in pushed routes (remove)
-				for (int i=0; i<routes.size(); i++) {
+				for (size_t i=0; i<routes.size(); i++) {
 					found = false;
 					for (int j=0; j<ZT_MAX_NETWORK_ROUTES; j++) {
 						target_addr = managed_routes->at(j).target;

src/libzt.cpp

@@ -66,7 +66,7 @@ void sys2lwip(int fd, const struct sockaddr *orig, struct sockaddr *modified)
 	}
 #if defined(LIBZT_IPV4)
 	if (ss.ss_family == AF_INET) {
-#if defined(__linux__)
+#if defined(__linux__) || defined(__MINGW32__)
 		struct sockaddr_in *p4 = (struct sockaddr_in *)modified;
 		struct sockaddr_in *addr4 = (struct sockaddr_in*)orig;
 		p4->sin_len = sizeof(struct sockaddr_in);
@@ -80,7 +80,7 @@ void sys2lwip(int fd, const struct sockaddr *orig, struct sockaddr *modified)
 
 #if defined(LIBZT_IPV6)
 	if (ss.ss_family == AF_INET6) {
-#if defined(__linux__)
+#if defined(__linux__) || defined(__MINGW32__)
 		struct sockaddr_in6 *p6 = (struct sockaddr_in6 *)modified;
 		struct sockaddr_in6 *addr6 = (struct sockaddr_in6*)orig;
 		p6->sin6_len = sizeof(struct sockaddr_in6);
@@ -311,6 +311,7 @@ int zts_close(int fd)
 	return err;
 }
 
+#if defined(__linux__)
 int zts_poll(struct pollfd *fds, nfds_t nfds, int timeout)
 {
 	int err = -1;
@@ -324,6 +325,7 @@ int zts_poll(struct pollfd *fds, nfds_t nfds, int timeout)
 #endif
 	return err;
 }
+#endif
 
 int zts_select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, 
 	struct timeval *timeout)

src/lwIP.cpp

@@ -115,6 +115,9 @@ void lwip_driver_init()
 	if (lwip_driver_initialized == true) {
 		return;
 	}
+#if defined(__MINGW32__)
+	sys_init(); // required for win32 initializtion of critical sections
+#endif
 	sys_thread_new("main_network_stack_thread", main_network_stack_thread,
 		NULL, DEFAULT_THREAD_STACKSIZE, DEFAULT_THREAD_PRIO);
 }
@@ -160,7 +163,7 @@ err_t lwip_eth_tx(struct netif *netif, struct pbuf *p)
 	return ERR_OK;
 }
 
-void general_lwip_init_interface(void *tapref, struct netif *interface, const char *name, const ZeroTier::MAC &mac, const ZeroTier::InetAddress &addr, const ZeroTier::InetAddress &nm, const ZeroTier::InetAddress &gw)
+void general_lwip_init_interface(void *tapref, void *netif, const char *name, const ZeroTier::MAC &mac, const ZeroTier::InetAddress &addr, const ZeroTier::InetAddress &nm, const ZeroTier::InetAddress &gw)
 {
 #if defined(LIBZT_IPV4)
 	char ipbuf[INET6_ADDRSTRLEN], nmbuf[INET6_ADDRSTRLEN], gwbuf[INET6_ADDRSTRLEN];
@@ -192,7 +195,7 @@ void general_lwip_init_interface(void *tapref, struct netif *interface, const ch
 #endif
 }
 
-void general_turn_on_interface(struct netif *interface)
+void general_turn_on_interface(void *netif)
 {
 	//netif_set_up(&n1);
 	//netif_set_default(&n1);
@@ -206,9 +209,9 @@ void lwip_dns_init()
 	dns_init();
 }
 
-void lwip_start_dhcp(struct netif *interface)
+void lwip_start_dhcp(void *netif)
 {
-	netifapi_dhcp_start(interface);
+	netifapi_dhcp_start((struct netif *)netif);
 }
 
 void lwip_init_interface(void *tapref, const ZeroTier::MAC &mac, const ZeroTier::InetAddress &ip)