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i2pd
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Merge pull request #1292 from PurpleI2P/inet_pton_xp 

inet_pton for winxp
pull/1295/head
R4SAS 6 years ago committed by GitHub
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1 changed files with 195 additions and 177 deletions
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  1. 372
      libi2pd/util.cpp

372
libi2pd/util.cpp
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@ -9,6 +9,7 @@ @@ -9,6 +9,7 @@
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <sysinfoapi.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#include <iphlpapi.h>
@ -21,8 +22,8 @@ @@ -21,8 +22,8 @@
#define MALLOC(x) HeapAlloc(GetProcessHeap(), 0, (x))
#define FREE(x) HeapFree(GetProcessHeap(), 0, (x))
/* // No more needed. Exists in MinGW.
int inet_pton(int af, const char *src, void *dst)
// inet_pton exists in Windows Vista, but XP haven't that function!
int inet_pton_xp(int af, const char *src, void *dst)
{ // This function was written by Petar Korponai?. See http://stackoverflow.com/questions/15660203/inet-pton-identifier-not-found
struct sockaddr_storage ss;
int size = sizeof (ss);
@ -45,7 +46,7 @@ int inet_pton(int af, const char *src, void *dst) @@ -45,7 +46,7 @@ int inet_pton(int af, const char *src, void *dst)
}
}
return 0;
}*/
}
#else /* !WIN32 => UNIX */
#include <sys/types.h>
#include <ifaddrs.h>
@ -58,204 +59,221 @@ namespace util @@ -58,204 +59,221 @@ namespace util
namespace net
{
#ifdef WIN32
int GetMTUWindowsIpv4(sockaddr_in inputAddress, int fallback)
{
ULONG outBufLen = 0;
PIP_ADAPTER_ADDRESSES pAddresses = nullptr;
PIP_ADAPTER_ADDRESSES pCurrAddresses = nullptr;
PIP_ADAPTER_UNICAST_ADDRESS pUnicast = nullptr;
if(GetAdaptersAddresses(AF_INET, GAA_FLAG_INCLUDE_PREFIX, nullptr, pAddresses, &outBufLen)
== ERROR_BUFFER_OVERFLOW) {
FREE(pAddresses);
pAddresses = (IP_ADAPTER_ADDRESSES*) MALLOC(outBufLen);
}
DWORD dwRetVal = GetAdaptersAddresses(
AF_INET, GAA_FLAG_INCLUDE_PREFIX, nullptr, pAddresses, &outBufLen
);
if(dwRetVal != NO_ERROR) {
LogPrint(eLogError, "NetIface: GetMTU(): enclosed GetAdaptersAddresses() call has failed");
FREE(pAddresses);
return fallback;
}
pCurrAddresses = pAddresses;
while(pCurrAddresses) {
PIP_ADAPTER_UNICAST_ADDRESS firstUnicastAddress = pCurrAddresses->FirstUnicastAddress;
pUnicast = pCurrAddresses->FirstUnicastAddress;
if(pUnicast == nullptr) {
LogPrint(eLogError, "NetIface: GetMTU(): not a unicast ipv4 address, this is not supported");
}
for(int i = 0; pUnicast != nullptr; ++i) {
LPSOCKADDR lpAddr = pUnicast->Address.lpSockaddr;
sockaddr_in* localInterfaceAddress = (sockaddr_in*) lpAddr;
if(localInterfaceAddress->sin_addr.S_un.S_addr == inputAddress.sin_addr.S_un.S_addr) {
auto result = pAddresses->Mtu;
FREE(pAddresses);
return result;
}
pUnicast = pUnicast->Next;
}
pCurrAddresses = pCurrAddresses->Next;
}
LogPrint(eLogError, "NetIface: GetMTU(): no usable unicast ipv4 addresses found");
FREE(pAddresses);
return fallback;
}
int GetMTUWindowsIpv6(sockaddr_in6 inputAddress, int fallback)
{
ULONG outBufLen = 0;
PIP_ADAPTER_ADDRESSES pAddresses = nullptr;
PIP_ADAPTER_ADDRESSES pCurrAddresses = nullptr;
PIP_ADAPTER_UNICAST_ADDRESS pUnicast = nullptr;
if(GetAdaptersAddresses(AF_INET6, GAA_FLAG_INCLUDE_PREFIX, nullptr, pAddresses, &outBufLen)
== ERROR_BUFFER_OVERFLOW) {
FREE(pAddresses);
pAddresses = (IP_ADAPTER_ADDRESSES*) MALLOC(outBufLen);
}
DWORD dwRetVal = GetAdaptersAddresses(
AF_INET6, GAA_FLAG_INCLUDE_PREFIX, nullptr, pAddresses, &outBufLen
);
if(dwRetVal != NO_ERROR) {
LogPrint(eLogError, "NetIface: GetMTU(): enclosed GetAdaptersAddresses() call has failed");
FREE(pAddresses);
return fallback;
}
bool found_address = false;
pCurrAddresses = pAddresses;
while(pCurrAddresses) {
PIP_ADAPTER_UNICAST_ADDRESS firstUnicastAddress = pCurrAddresses->FirstUnicastAddress;
pUnicast = pCurrAddresses->FirstUnicastAddress;
if(pUnicast == nullptr) {
LogPrint(eLogError, "NetIface: GetMTU(): not a unicast ipv6 address, this is not supported");
}
for(int i = 0; pUnicast != nullptr; ++i) {
LPSOCKADDR lpAddr = pUnicast->Address.lpSockaddr;
sockaddr_in6 *localInterfaceAddress = (sockaddr_in6*) lpAddr;
for (int j = 0; j != 8; ++j) {
if (localInterfaceAddress->sin6_addr.u.Word[j] != inputAddress.sin6_addr.u.Word[j]) {
break;
} else {
found_address = true;
}
} if (found_address) {
auto result = pAddresses->Mtu;
FREE(pAddresses);
pAddresses = nullptr;
return result;
}
pUnicast = pUnicast->Next;
}
pCurrAddresses = pCurrAddresses->Next;
}
LogPrint(eLogError, "NetIface: GetMTU(): no usable unicast ipv6 addresses found");
FREE(pAddresses);
return fallback;
}
int GetMTUWindows(const boost::asio::ip::address& localAddress, int fallback)
{
bool IsWindowsXPorLater() {
OSVERSIONINFO osvi;
ZeroMemory(&osvi, sizeof(OSVERSIONINFO));
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
GetVersionEx(&osvi);
if (osvi.dwMajorVersion <= 5)
return true;
else
return false;
}
int GetMTUWindowsIpv4(sockaddr_in inputAddress, int fallback)
{
ULONG outBufLen = 0;
PIP_ADAPTER_ADDRESSES pAddresses = nullptr;
PIP_ADAPTER_ADDRESSES pCurrAddresses = nullptr;
PIP_ADAPTER_UNICAST_ADDRESS pUnicast = nullptr;
if(GetAdaptersAddresses(AF_INET, GAA_FLAG_INCLUDE_PREFIX, nullptr, pAddresses, &outBufLen)
== ERROR_BUFFER_OVERFLOW) {
FREE(pAddresses);
pAddresses = (IP_ADAPTER_ADDRESSES*) MALLOC(outBufLen);
}
DWORD dwRetVal = GetAdaptersAddresses(
AF_INET, GAA_FLAG_INCLUDE_PREFIX, nullptr, pAddresses, &outBufLen
);
if(dwRetVal != NO_ERROR) {
LogPrint(eLogError, "NetIface: GetMTU(): enclosed GetAdaptersAddresses() call has failed");
FREE(pAddresses);
return fallback;
}
pCurrAddresses = pAddresses;
while(pCurrAddresses) {
PIP_ADAPTER_UNICAST_ADDRESS firstUnicastAddress = pCurrAddresses->FirstUnicastAddress;
pUnicast = pCurrAddresses->FirstUnicastAddress;
if(pUnicast == nullptr) {
LogPrint(eLogError, "NetIface: GetMTU(): not a unicast ipv4 address, this is not supported");
}
for(int i = 0; pUnicast != nullptr; ++i) {
LPSOCKADDR lpAddr = pUnicast->Address.lpSockaddr;
sockaddr_in* localInterfaceAddress = (sockaddr_in*) lpAddr;
if(localInterfaceAddress->sin_addr.S_un.S_addr == inputAddress.sin_addr.S_un.S_addr) {
auto result = pAddresses->Mtu;
FREE(pAddresses);
return result;
}
pUnicast = pUnicast->Next;
}
pCurrAddresses = pCurrAddresses->Next;
}
LogPrint(eLogError, "NetIface: GetMTU(): no usable unicast ipv4 addresses found");
FREE(pAddresses);
return fallback;
}
int GetMTUWindowsIpv6(sockaddr_in6 inputAddress, int fallback)
{
ULONG outBufLen = 0;
PIP_ADAPTER_ADDRESSES pAddresses = nullptr;
PIP_ADAPTER_ADDRESSES pCurrAddresses = nullptr;
PIP_ADAPTER_UNICAST_ADDRESS pUnicast = nullptr;
if(GetAdaptersAddresses(AF_INET6, GAA_FLAG_INCLUDE_PREFIX, nullptr, pAddresses, &outBufLen)
== ERROR_BUFFER_OVERFLOW) {
FREE(pAddresses);
pAddresses = (IP_ADAPTER_ADDRESSES*) MALLOC(outBufLen);
}
DWORD dwRetVal = GetAdaptersAddresses(
AF_INET6, GAA_FLAG_INCLUDE_PREFIX, nullptr, pAddresses, &outBufLen
);
if(dwRetVal != NO_ERROR) {
LogPrint(eLogError, "NetIface: GetMTU(): enclosed GetAdaptersAddresses() call has failed");
FREE(pAddresses);
return fallback;
}
bool found_address = false;
pCurrAddresses = pAddresses;
while(pCurrAddresses) {
PIP_ADAPTER_UNICAST_ADDRESS firstUnicastAddress = pCurrAddresses->FirstUnicastAddress;
pUnicast = pCurrAddresses->FirstUnicastAddress;
if(pUnicast == nullptr) {
LogPrint(eLogError, "NetIface: GetMTU(): not a unicast ipv6 address, this is not supported");
}
for(int i = 0; pUnicast != nullptr; ++i) {
LPSOCKADDR lpAddr = pUnicast->Address.lpSockaddr;
sockaddr_in6 *localInterfaceAddress = (sockaddr_in6*) lpAddr;
for (int j = 0; j != 8; ++j) {
if (localInterfaceAddress->sin6_addr.u.Word[j] != inputAddress.sin6_addr.u.Word[j]) {
break;
} else {
found_address = true;
}
} if (found_address) {
auto result = pAddresses->Mtu;
FREE(pAddresses);
pAddresses = nullptr;
return result;
}
pUnicast = pUnicast->Next;
}
pCurrAddresses = pCurrAddresses->Next;
}
LogPrint(eLogError, "NetIface: GetMTU(): no usable unicast ipv6 addresses found");
FREE(pAddresses);
return fallback;
}
int GetMTUWindows(const boost::asio::ip::address& localAddress, int fallback)
{
#ifdef UNICODE
string localAddress_temporary = localAddress.to_string();
wstring localAddressUniversal(localAddress_temporary.begin(), localAddress_temporary.end());
string localAddress_temporary = localAddress.to_string();
wstring localAddressUniversal(localAddress_temporary.begin(), localAddress_temporary.end());
#else
std::string localAddressUniversal = localAddress.to_string();
std::string localAddressUniversal = localAddress.to_string();
#endif
if(localAddress.is_v4()) {
sockaddr_in inputAddress;
inet_pton(AF_INET, localAddressUniversal.c_str(), &(inputAddress.sin_addr));
return GetMTUWindowsIpv4(inputAddress, fallback);
} else if(localAddress.is_v6()) {
sockaddr_in6 inputAddress;
inet_pton(AF_INET6, localAddressUniversal.c_str(), &(inputAddress.sin6_addr));
return GetMTUWindowsIpv6(inputAddress, fallback);
} else {
LogPrint(eLogError, "NetIface: GetMTU(): address family is not supported");
return fallback;
}
}
if (IsWindowsXPorLater())
#define inet_pton inet_pton_xp
if(localAddress.is_v4()) {
sockaddr_in inputAddress;
inet_pton(AF_INET, localAddressUniversal.c_str(), &(inputAddress.sin_addr));
return GetMTUWindowsIpv4(inputAddress, fallback);
} else if(localAddress.is_v6()) {
sockaddr_in6 inputAddress;
inet_pton(AF_INET6, localAddressUniversal.c_str(), &(inputAddress.sin6_addr));
return GetMTUWindowsIpv6(inputAddress, fallback);
} else {
LogPrint(eLogError, "NetIface: GetMTU(): address family is not supported");
return fallback;
}
}
#else // assume unix
int GetMTUUnix(const boost::asio::ip::address& localAddress, int fallback)
{
ifaddrs* ifaddr, *ifa = nullptr;
if(getifaddrs(&ifaddr) == -1)
{
ifaddrs* ifaddr, *ifa = nullptr;
if(getifaddrs(&ifaddr) == -1)
{
LogPrint(eLogError, "NetIface: Can't call getifaddrs(): ", strerror(errno));
return fallback;
}
LogPrint(eLogError, "NetIface: Can't call getifaddrs(): ", strerror(errno));
return fallback;
}
int family = 0;
// look for interface matching local address
for(ifa = ifaddr; ifa != nullptr; ifa = ifa->ifa_next)
int family = 0;
// look for interface matching local address
for(ifa = ifaddr; ifa != nullptr; ifa = ifa->ifa_next)
{
if(!ifa->ifa_addr)
continue;
if(!ifa->ifa_addr)
continue;
family = ifa->ifa_addr->sa_family;
if(family == AF_INET && localAddress.is_v4())
family = ifa->ifa_addr->sa_family;
if(family == AF_INET && localAddress.is_v4())
{
sockaddr_in* sa = (sockaddr_in*) ifa->ifa_addr;
if(!memcmp(&sa->sin_addr, localAddress.to_v4().to_bytes().data(), 4))
break; // address matches
}
sockaddr_in* sa = (sockaddr_in*) ifa->ifa_addr;
if(!memcmp(&sa->sin_addr, localAddress.to_v4().to_bytes().data(), 4))
break; // address matches
}
else if(family == AF_INET6 && localAddress.is_v6())
{
sockaddr_in6* sa = (sockaddr_in6*) ifa->ifa_addr;
if(!memcmp(&sa->sin6_addr, localAddress.to_v6().to_bytes().data(), 16))
break; // address matches
}
}
int mtu = fallback;
if(ifa && family)
sockaddr_in6* sa = (sockaddr_in6*) ifa->ifa_addr;
if(!memcmp(&sa->sin6_addr, localAddress.to_v6().to_bytes().data(), 16))
break; // address matches
}
}
int mtu = fallback;
if(ifa && family)
{ // interface found?
int fd = socket(family, SOCK_DGRAM, 0);
if(fd > 0)
int fd = socket(family, SOCK_DGRAM, 0);
if(fd > 0)
{
ifreq ifr;
strncpy(ifr.ifr_name, ifa->ifa_name, IFNAMSIZ); // set interface for query
if(ioctl(fd, SIOCGIFMTU, &ifr) >= 0)
mtu = ifr.ifr_mtu; // MTU
else
LogPrint (eLogError, "NetIface: Failed to run ioctl: ", strerror(errno));
close(fd);
}
ifreq ifr;
strncpy(ifr.ifr_name, ifa->ifa_name, IFNAMSIZ); // set interface for query
if(ioctl(fd, SIOCGIFMTU, &ifr) >= 0)
mtu = ifr.ifr_mtu; // MTU
else
LogPrint (eLogError, "NetIface: Failed to run ioctl: ", strerror(errno));
close(fd);
}
else
LogPrint(eLogError, "NetIface: Failed to create datagram socket");
}
LogPrint(eLogError, "NetIface: Failed to create datagram socket");
}
else
LogPrint(eLogWarning, "NetIface: interface for local address", localAddress.to_string(), " not found");
freeifaddrs(ifaddr);
LogPrint(eLogWarning, "NetIface: interface for local address", localAddress.to_string(), " not found");
freeifaddrs(ifaddr);
return mtu;
}
return mtu;
}
#endif // WIN32
int GetMTU(const boost::asio::ip::address& localAddress)
{
const int fallback = 576; // fallback MTU
int GetMTU(const boost::asio::ip::address& localAddress)
{
const int fallback = 576; // fallback MTU
#ifdef WIN32
return GetMTUWindows(localAddress, fallback);
return GetMTUWindows(localAddress, fallback);
#else
return GetMTUUnix(localAddress, fallback);
return GetMTUUnix(localAddress, fallback);
#endif
return fallback;
}
return fallback;
}
const boost::asio::ip::address GetInterfaceAddress(const std::string & ifname, bool ipv6)
{

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