Several things:

(1) Add a bunch of tedious type casts to eliminate unnecessary compiler warnings on Windows X64 builds.

(2) Some EthernetTap work to integrate Windows custom IOCTL for multicast group lookup (not done quite yet).

(3) Dump some more info in selftest to make sure our Windows path lookup functions are returning sane results.

node/C25519.hpp

@@ -73,7 +73,7 @@ public:
 		throw()
 	{
 		Pair kp;
-		Utils::getSecureRandom(kp.priv.data,kp.priv.size());
+		Utils::getSecureRandom(kp.priv.data,(unsigned int)kp.priv.size());
 		_calcPubDH(kp);
 		_calcPubED(kp);
 		return kp;
@@ -98,7 +98,7 @@ public:
 	{
 		Pair kp;
 		void *const priv = (void *)kp.priv.data;
-		Utils::getSecureRandom(priv,kp.priv.size());
+		Utils::getSecureRandom(priv,(unsigned int)kp.priv.size());
 		_calcPubED(kp); // do Ed25519 key -- bytes 32-63 of pub and priv
 		do {
 			++(((uint64_t *)priv)[1]);

node/CertificateOfMembership.cpp

@@ -74,7 +74,7 @@ std::string CertificateOfMembership::toString() const
 
 	if (_signedBy) {
 		s.push_back(':');
-		s.append(Utils::hex(_signature.data,_signature.size()));
+		s.append(Utils::hex(_signature.data,(unsigned int)_signature.size()));
 	}
 
 	return s;
@@ -132,7 +132,7 @@ void CertificateOfMembership::fromString(const char *s)
 				while ((s[colonAt])&&(s[colonAt] != ':')) ++colonAt;
 
 				if (colonAt) {
-					if (Utils::unhex(s,colonAt,_signature.data,_signature.size()) != _signature.size())
+					if (Utils::unhex(s,colonAt,_signature.data,(unsigned int)_signature.size()) != _signature.size())
 						_signedBy.zero();
 				} else _signedBy.zero();
 			} else _signedBy.zero();

node/CertificateOfMembership.hpp

@@ -327,7 +327,7 @@ public:
 		}
 		_signedBy.appendTo(b);
 		if (_signedBy)
-			b.append(_signature.data,_signature.size());
+			b.append(_signature.data,(unsigned int)_signature.size());
 	}
 
 	template<unsigned int C>
@@ -361,8 +361,8 @@ public:
 		p += ZT_ADDRESS_LENGTH;
 
 		if (_signedBy) {
-			memcpy(_signature.data,b.field(p,_signature.size()),_signature.size());
-			p += _signature.size();
+			memcpy(_signature.data,b.field(p,(unsigned int)_signature.size()),_signature.size());
+			p += (unsigned int)_signature.size();
 		}
 
 		return (p - startAt);

node/EthernetTap.cpp

@@ -268,8 +268,6 @@ EthernetTap::EthernetTap(
 	_r(renv),
 	_handler(handler),
 	_arg(arg),
-	_dhcp(false),
-	_dhcp6(false),
 	_fd(0)
 {
 	char devpath[64],ethaddr[64],mtustr[16],tmp[4096];
@@ -389,7 +387,7 @@ void EthernetTap::whack()
 		if (cpid == 0) {
 			execl(ipconfig,ipconfig,"set",_dev,"AUTOMATIC-V6",(const char *)0);
 			_exit(-1);
-		} else {
+		} else if (cpid > 0) {
 			int exitcode = -1;
 			waitpid(cpid,&exitcode,0);
 		}
@@ -399,17 +397,6 @@ void EthernetTap::whack()
 void EthernetTap::whack() {}
 #endif // __APPLE__ / !__APPLE__
 
-bool EthernetTap::setDhcpEnabled(bool dhcp)
-{
-	// TODO
-	return _dhcp;
-}
-
-bool EthernetTap::setDhcp6Enabled(bool dhcp)
-{
-	return _dhcp6;
-}
-
 void EthernetTap::setDisplayName(const char *dn)
 {
 }
@@ -810,7 +797,6 @@ static inline void _intl_freeifmaddrs(struct ifmaddrs *ifmp)
 	free(ifmp);
 }
 
-
 // --------------------------------------------------------------------------
 
 bool EthernetTap::updateMulticastGroups(std::set<MulticastGroup> &groups)
@@ -981,8 +967,6 @@ EthernetTap::EthernetTap(
 	_r(renv),
 	_handler(handler),
 	_arg(arg),
-	_dhcp(false),
-	_dhcp6(false),
 	_tap(INVALID_HANDLE_VALUE),
 	_injectSemaphore(INVALID_HANDLE_VALUE),
 	_run(true)
@@ -995,10 +979,14 @@ EthernetTap::EthernetTap(
 		throw std::runtime_error("MTU too large for Windows tap");
 
 #ifdef _WIN64
-	const char *devcon = "\\devcon64.exe";
+	BOOL is64Bit = TRUE;
+	const char *devcon = "\\devcon_x64.exe";
+	const char *tapDriver = "\\tap-windows\\x64\\ztTap100.inf";
 #else
-	BOOL f64 = FALSE;
-	const char *devcon = ((IsWow64Process(GetCurrentProcess(),&f64) == TRUE) ? "\\devcon64.exe" : "\\devcon32.exe");
+	BOOL is64Bit = FALSE;
+	IsWow64Process(GetCurrentProcess(),&is64Bit);
+	const char *devcon = ((is64Bit == TRUE) ? "\\devcon_x64.exe" : "\\devcon_x86.exe");
+	const char *tapDriver = ((is64Bit == TRUE) ? "\\tap-windows\\x64\\ztTap100.inf" : "\\tap-windows\\x86\\ztTap100.inf");
 #endif
 
 	Mutex::Lock _l(_systemTapInitLock); // only init one tap at a time, process-wide
@@ -1066,7 +1054,7 @@ EthernetTap::EthernetTap(
 		PROCESS_INFORMATION processInfo;
 		memset(&startupInfo,0,sizeof(STARTUPINFOA));
 		memset(&processInfo,0,sizeof(PROCESS_INFORMATION));
-		if (!CreateProcessA(NULL,(LPSTR)(std::string("\"") + _r->homePath + devcon + "\" install \"" + _r->homePath + "\\ztTap100.inf\" ztTap100").c_str(),NULL,NULL,FALSE,0,NULL,NULL,&startupInfo,&processInfo)) {
+		if (!CreateProcessA(NULL,(LPSTR)(std::string("\"") + _r->homePath + devcon + "\" install \"" + _r->homePath + tapDriver + "\" ztTap100").c_str(),NULL,NULL,FALSE,0,NULL,NULL,&startupInfo,&processInfo)) {
 			RegCloseKey(nwAdapters);
 			throw std::runtime_error(std::string("unable to find or execute devcon at ")+devcon);
 		}
@@ -1145,9 +1133,6 @@ EthernetTap::EthernetTap(
 			throw std::runtime_error("unable to convert instance ID GUID to native GUID (invalid NetCfgInstanceId in registry?)");
 	}
 
-	setDhcpEnabled(false);
-	setDhcp6Enabled(false);
-
 	// Disable and enable interface to ensure registry settings take effect
 	{
 		STARTUPINFOA startupInfo;
@@ -1211,24 +1196,25 @@ EthernetTap::~EthernetTap()
 	CloseHandle(_tapOvlWrite.hEvent);
 	CloseHandle(_injectSemaphore);
 
-	// Disable network device on shutdown
 #ifdef _WIN64
-	const char *devcon = "\\devcon64.exe";
+	BOOL is64Bit = TRUE;
+	const char *devcon = "\\devcon_x64.exe";
 #else
-	BOOL f64 = FALSE;
-	const char *devcon = ((IsWow64Process(GetCurrentProcess(),&f64) == TRUE) ? "\\devcon64.exe" : "\\devcon32.exe");
+	BOOL is64Bit = FALSE;
+	IsWow64Process(GetCurrentProcess(),&is64Bit);
+	const char *devcon = ((is64Bit == TRUE) ? "\\devcon_x64.exe" : "\\devcon_x86.exe");
 #endif
-	{
-		STARTUPINFOA startupInfo;
-		startupInfo.cb = sizeof(startupInfo);
-		PROCESS_INFORMATION processInfo;
-		memset(&startupInfo,0,sizeof(STARTUPINFOA));
-		memset(&processInfo,0,sizeof(PROCESS_INFORMATION));
-		if (CreateProcessA(NULL,(LPSTR)(std::string("\"") + _r->homePath + devcon + "\" disable @" + _myDeviceInstanceIdPath).c_str(),NULL,NULL,FALSE,0,NULL,NULL,&startupInfo,&processInfo)) {
-			WaitForSingleObject(processInfo.hProcess,INFINITE);
-			CloseHandle(processInfo.hProcess);
-			CloseHandle(processInfo.hThread);
-		}
+
+	// Disable network device on shutdown
+	STARTUPINFOA startupInfo;
+	startupInfo.cb = sizeof(startupInfo);
+	PROCESS_INFORMATION processInfo;
+	memset(&startupInfo,0,sizeof(STARTUPINFOA));
+	memset(&processInfo,0,sizeof(PROCESS_INFORMATION));
+	if (CreateProcessA(NULL,(LPSTR)(std::string("\"") + _r->homePath + devcon + "\" disable @" + _myDeviceInstanceIdPath).c_str(),NULL,NULL,FALSE,0,NULL,NULL,&startupInfo,&processInfo)) {
+		WaitForSingleObject(processInfo.hProcess,INFINITE);
+		CloseHandle(processInfo.hProcess);
+		CloseHandle(processInfo.hThread);
 	}
 }
 
@@ -1236,25 +1222,6 @@ void EthernetTap::whack()
 {
 }
 
-bool EthernetTap::setDhcpEnabled(bool dhcp)
-{
-	HKEY tcpIpInterfaces;
-	if (RegOpenKeyExA(HKEY_LOCAL_MACHINE,"SYSTEM\\CurrentControlSet\\services\\Tcpip\\Parameters\\Interfaces",0,KEY_READ|KEY_WRITE,&tcpIpInterfaces) == ERROR_SUCCESS) {
-		_dhcp = dhcp;
-		DWORD enable = (dhcp ? 1 : 0);
-		RegSetKeyValueA(tcpIpInterfaces,_myDeviceInstanceId.c_str(),"EnableDHCP",REG_DWORD,&enable,sizeof(enable));
-		RegCloseKey(tcpIpInterfaces);
-	} else _dhcp = false;
-
-	return _dhcp;
-}
-
-bool EthernetTap::setDhcp6Enabled(bool dhcp)
-{
-	// TODO
-	return _dhcp6;
-}
-
 void EthernetTap::setDisplayName(const char *dn)
 {
 	HKEY ifp;
@@ -1394,14 +1361,43 @@ bool EthernetTap::updateMulticastGroups(std::set<MulticastGroup> &groups)
 {
 	std::set<MulticastGroup> newGroups;
 
+	// Ensure that groups are added for each IP... this handles the MAC:ADI
+	// groups that are created from IPv4 addresses. Some of these may end
+	// up being duplicates of what the IOCTL returns but that's okay since
+	// the set will filter these.
 	std::set<InetAddress> ipaddrs(allIps());
 	for(std::set<InetAddress>::const_iterator i(ipaddrs.begin());i!=ipaddrs.end();++i)
 		newGroups.insert(MulticastGroup::deriveMulticastGroupForAddressResolution(*i));
 
-	bool changed = false;
+	// The ZT1 tap driver supports an IOCTL to get multicast memberships at the L2
+	// level... something Windows does not seem to expose ordinarily. This lets
+	// pretty much anything work... IPv4, IPv6, IPX, oldskool Netbios, who knows...
+	unsigned char mcastbuf[TAP_WIN_IOCTL_GET_MULTICAST_MEMBERSHIPS_OUTPUT_BUF_SIZE];
+	DWORD bytesReturned = 0;
+	if (DeviceIoControl(_tap,TAP_WIN_IOCTL_GET_MULTICAST_MEMBERSHIPS,(LPVOID)0,0,(LPVOID)mcastbuf,sizeof(mcastbuf),&bytesReturned,NULL)) {
+		printf("TAP_WIN_IOCTL_GET_MULTICAST_MEMBERSHIPS: got %d bytes\n",(int)bytesReturned);
+		MAC mac;
+		DWORD i = 0;
+		while ((i + 6) <= bytesReturned) {
+			mac.data[0] = mcastbuf[i++];
+			mac.data[1] = mcastbuf[i++];
+			mac.data[2] = mcastbuf[i++];
+			mac.data[3] = mcastbuf[i++];
+			mac.data[4] = mcastbuf[i++];
+			mac.data[5] = mcastbuf[i++];
+			if (mac.isMulticast()) { // exclude the nulls that may be returned or any other junk Windows puts in there
+				newGroups.insert(MulticastGroup(mac,0));
+				printf("TAP_WIN_IOCTL_GET_MULTICAST_MEMBERSHIPS: %s\n",mac.toString().c_str());
+			}
+		}
+	} else {
+		printf("TAP_WIN_IOCTL_GET_MULTICAST_MEMBERSHIPS: failed\n");
+	}
 
 	newGroups.insert(_blindWildcardMulticastGroup); // always join this
 
+	bool changed = false;
+
 	for(std::set<MulticastGroup>::iterator mg(newGroups.begin());mg!=newGroups.end();++mg) {
 		if (!groups.count(*mg)) {
 			groups.insert(*mg);

node/EthernetTap.hpp

@@ -99,22 +99,6 @@ public:
 	 */
 	void whack();
 
-	/**
-	 * Set whether or not DHCP is enabled (disabled by default)
-	 *
-	 * @param dhcp DHCP status
-	 * @return New state of DHCP (may be false even on 'true' if DHCP enable failed)
-	 */
-	bool setDhcpEnabled(bool dhcp);
-
-	/**
-	 * Set whether or not DHCP6 is enabled (disabled by default)
-	 *
-	 * @param dhcp DHCP6 status
-	 * @return New state of DHCP6 (may be false even on 'true' if DHCP enable failed)
-	 */
-	bool setDhcp6Enabled(bool dhcp);
-
 	/**
 	 * Set the user display name for this connection
 	 *
@@ -230,9 +214,6 @@ private:
 	void (*_handler)(void *,const MAC &,const MAC &,unsigned int,const Buffer<4096> &);
 	void *_arg;
 
-	bool _dhcp;
-	bool _dhcp6;
-
 	Thread _thread;
 
 #ifdef __UNIX_LIKE__

node/HttpClient.cpp

@@ -361,7 +361,7 @@ public:
 			uc.dwHostNameLength = -1;
 			uc.dwUrlPathLength = -1;
 			uc.dwExtraInfoLength = -1;
-			if (!WinHttpCrackUrl(wurl.c_str(),wurl.length(),0,&uc)) {
+			if (!WinHttpCrackUrl(wurl.c_str(),(DWORD)wurl.length(),0,&uc)) {
 				_handler(_arg,-1,_url,false,"unable to parse URL: WinHttpCrackUrl() failed");
 				goto closeAndReturnFromHttp;
 			}

node/Identity.cpp

@@ -90,7 +90,7 @@ struct _Identity_generate_cond
 	inline bool operator()(const C25519::Pair &kp) const
 		throw()
 	{
-		_computeMemoryHardHash(kp.pub.data,kp.pub.size(),digest,genmem);
+		_computeMemoryHardHash(kp.pub.data,(unsigned int)kp.pub.size(),digest,genmem);
 		return (digest[0] < ZT_IDENTITY_GEN_HASHCASH_FIRST_BYTE_LESS_THAN);
 	}
 	unsigned char *digest;
@@ -123,7 +123,7 @@ bool Identity::locallyValidate() const
 
 	unsigned char digest[64];
 	char *genmem = new char[ZT_IDENTITY_GEN_MEMORY];
-	_computeMemoryHardHash(_publicKey.data,_publicKey.size(),digest,genmem);
+	_computeMemoryHardHash(_publicKey.data,(unsigned int)_publicKey.size(),digest,genmem);
 	delete [] genmem;
 
 	unsigned char addrb[5];
@@ -144,10 +144,10 @@ std::string Identity::toString(bool includePrivate) const
 
 	r.append(_address.toString());
 	r.append(":0:"); // 0 == IDENTITY_TYPE_C25519
-	r.append(Utils::hex(_publicKey.data,_publicKey.size()));
+	r.append(Utils::hex(_publicKey.data,(unsigned int)_publicKey.size()));
 	if ((_privateKey)&&(includePrivate)) {
 		r.push_back(':');
-		r.append(Utils::hex(_privateKey->data,_privateKey->size()));
+		r.append(Utils::hex(_privateKey->data,(unsigned int)_privateKey->size()));
 	}
 
 	return r;
@@ -176,12 +176,12 @@ bool Identity::fromString(const char *str)
 					return false;
 				break;
 			case 2:
-				if (Utils::unhex(f,_publicKey.data,_publicKey.size()) != _publicKey.size())
+				if (Utils::unhex(f,_publicKey.data,(unsigned int)_publicKey.size()) != _publicKey.size())
 					return false;
 				break;
 			case 3:
 				_privateKey = new C25519::Private();
-				if (Utils::unhex(f,_privateKey->data,_privateKey->size()) != _privateKey->size())
+				if (Utils::unhex(f,_privateKey->data,(unsigned int)_privateKey->size()) != _privateKey->size())
 					return false;
 				break;
 			default:

node/Identity.hpp

@@ -224,10 +224,10 @@ public:
 	{
 		_address.appendTo(b);
 		b.append((unsigned char)IDENTITY_TYPE_C25519);
-		b.append(_publicKey.data,_publicKey.size());
+		b.append(_publicKey.data,(unsigned int)_publicKey.size());
 		if ((_privateKey)&&(includePrivate)) {
 			b.append((unsigned char)_privateKey->size());
-			b.append(_privateKey->data,_privateKey->size());
+			b.append(_privateKey->data,(unsigned int)_privateKey->size());
 		} else b.append((unsigned char)0);
 	}
 
@@ -258,8 +258,8 @@ public:
 		if (b[p++] != IDENTITY_TYPE_C25519)
 			throw std::invalid_argument("unsupported identity type");
 
-		memcpy(_publicKey.data,b.field(p,_publicKey.size()),_publicKey.size());
-		p += _publicKey.size();
+		memcpy(_publicKey.data,b.field(p,(unsigned int)_publicKey.size()),(unsigned int)_publicKey.size());
+		p += (unsigned int)_publicKey.size();
 
 		unsigned int privateKeyLength = (unsigned int)b[p++];
 		if (privateKeyLength) {

node/Network.cpp

@@ -59,6 +59,9 @@ Network::~Network()
 	if (_destroyOnDelete) {
 		Utils::rm(std::string(_r->homePath + ZT_PATH_SEPARATOR_S + "networks.d" + ZT_PATH_SEPARATOR_S + idString() + ".conf"));
 		Utils::rm(std::string(_r->homePath + ZT_PATH_SEPARATOR_S + "networks.d" + ZT_PATH_SEPARATOR_S + idString() + ".mcerts"));
+
+		// TODO: on Windows we need to also remove the tap interface since they're
+		// sticky on that platform.
 	} else {
 		// Causes flush of membership certs to disk
 		clean();

node/Node.cpp

@@ -134,7 +134,7 @@ Node::LocalClient::LocalClient(const char *authToken,unsigned int controlPort,vo
 	if (sock) {
 		{
 			unsigned int csk[64];
-			SHA512::hash(csk,authToken,strlen(authToken));
+			SHA512::hash(csk,authToken,(unsigned int)strlen(authToken));
 			memcpy(impl->key,csk,32);
 		}
 

node/NodeConfig.cpp

@@ -66,7 +66,7 @@ NodeConfig::NodeConfig(const RuntimeEnvironment *renv,const char *authToken,unsi
 {
 	{
 		unsigned int csk[64];
-		SHA512::hash(csk,authToken,strlen(authToken));
+		SHA512::hash(csk,authToken,(unsigned int)strlen(authToken));
 		memcpy(_controlSocketKey,csk,32);
 	}
 

node/SoftwareUpdater.cpp

@@ -113,7 +113,7 @@ bool SoftwareUpdater::validateUpdate(
 	std::map< Address,Identity >::const_iterator updateAuthority = ZT_DEFAULTS.updateAuthorities.find(signedBy);
 	if (updateAuthority == ZT_DEFAULTS.updateAuthorities.end())
 		return false;
-	return updateAuthority->second.verify(data,len,signature.data(),signature.length());
+	return updateAuthority->second.verify(data,len,signature.data(),(unsigned int)signature.length());
 }
 
 void SoftwareUpdater::_cbHandleGetLatestVersionInfo(void *arg,int code,const std::string &url,bool onDisk,const std::string &body)
@@ -176,7 +176,7 @@ void SoftwareUpdater::_cbHandleGetLatestVersionBinary(void *arg,int code,const s
 	const RuntimeEnvironment *_r = (const RuntimeEnvironment *)upd->_r;
 	Mutex::Lock _l(upd->_lock);
 
-	if (!validateUpdate(body.data(),body.length(),upd->_signedBy,upd->_signature)) {
+	if (!validateUpdate(body.data(),(unsigned int)body.length(),upd->_signedBy,upd->_signature)) {
 		LOG("software update aborted: update fetched from '%s' failed signature check (got %u bytes)",url.c_str(),(unsigned int)body.length());
 		upd->_status = UPDATE_STATUS_IDLE;
 		return;

node/Switch.cpp

@@ -155,7 +155,7 @@ void Switch::onLocalEthernet(const SharedPtr<Network> &network,const MAC &from,c
 
 			C25519::Signature sig(_r->identity.sign(outp.field(ZT_PROTO_VERB_MULTICAST_FRAME_IDX__START_OF_SIGNED_PORTION,signedPartLen),signedPartLen));
 			outp.append((uint16_t)sig.size());
-			outp.append(sig.data,sig.size());
+			outp.append(sig.data,(unsigned int)sig.size());
 
 			if (nconf->com())
 				nconf->com().serialize(outp);

selftest.cpp

@@ -53,6 +53,8 @@
 #include "node/Poly1305.hpp"
 #include "node/CertificateOfMembership.hpp"
 #include "node/HttpClient.hpp"
+#include "node/Defaults.hpp"
+#include "node/Node.hpp"
 
 #ifdef __WINDOWS__
 #include <tchar.h>
@@ -70,7 +72,7 @@ static void testHttpHandler(void *arg,int code,const std::string &url,bool onDis
 {
 	unsigned char sha[64];
 	if (code == 200) {
-		SHA512::hash(sha,body.data(),body.length());
+		SHA512::hash(sha,body.data(),(unsigned int)body.length());
 		if (webSha512ShouldBe == Utils::hex(sha,64))
 			std::cout << "got " << body.length() << " bytes, response code " << code << ", SHA-512 OK" << std::endl;
 		else std::cout << "got " << body.length() << " bytes, response code " << code << ", SHA-512 FAILED!" << std::endl;
@@ -129,7 +131,7 @@ static int testCrypto()
 	}
 
 	std::cout << "[crypto] Testing SHA-512... "; std::cout.flush();
-	SHA512::hash(buf1,sha512TV0Input,strlen(sha512TV0Input));
+	SHA512::hash(buf1,sha512TV0Input,(unsigned int)strlen(sha512TV0Input));
 	if (memcmp(buf1,sha512TV0Digest,64)) {
 		std::cout << "FAIL" << std::endl;
 		return -1;
@@ -465,7 +467,7 @@ static int testPacket()
 
 	a.reset(Address(),Address(),Packet::VERB_HELLO);
 	for(int i=0;i<32;++i)
-		a.append("supercalifragilisticexpealidocious",strlen("supercalifragilisticexpealidocious"));
+		a.append("supercalifragilisticexpealidocious",(unsigned int)strlen("supercalifragilisticexpealidocious"));
 
 	b = a;
 	if (a != b) {
@@ -504,7 +506,7 @@ static int testOther()
 		if ((dec.length() != flen)||(memcmp(dec.data(),fuzzbuf,dec.length()))) {
 			std::cout << "FAILED!" << std::endl;
 			std::cout << Utils::hex(fuzzbuf,flen) << std::endl;
-			std::cout << Utils::hex(dec.data(),dec.length()) << std::endl;
+			std::cout << Utils::hex(dec.data(),(unsigned int)dec.length()) << std::endl;
 			return -1;
 		}
 	}
@@ -614,6 +616,9 @@ int main(int argc,char **argv)
 	*/
 
 	std::cout << "[info] sizeof(void *) == " << sizeof(void *) << std::endl;
+	std::cout << "[info] default home: " << ZT_DEFAULTS.defaultHomePath << std::endl;
+	std::cout << "[info] system authtoken.secret: " << Node::LocalClient::authTokenDefaultSystemPath() << std::endl;
+	std::cout << "[info] user authtoken.secret: " << Node::LocalClient::authTokenDefaultUserPath() << std::endl;
 
 	srand((unsigned int)time(0));