void QueryDNSListenUDPStart(ConfigFileInfo *ConfigInfo)
{
int _ThreadCount;
if(Inited == FALSE) return;
_ThreadCount = ConfigGetInt32(ConfigInfo, "UDPThreads");
if(_ThreadCount < 1)
{
return;
}
Threads = SafeMalloc(_ThreadCount * sizeof(ThreadHandle));
for(; _ThreadCount != 0; --_ThreadCount)
{
CREATE_THREAD(QueryDNSListenUDP,
(void *)(long)_ThreadCount,
Threads[_ThreadCount - 1]
);
}
INFO("Starting UDP socket %s:%d successfully.\n",
ConfigGetRawString(ConfigInfo, "LocalInterface"),
ConfigGetInt32(ConfigInfo, "LocalPort")
);
}
static int LoadGfwList_Thread(ConfigFileInfo *ConfigInfo)
{
int UpdateInterval = ConfigGetInt32(ConfigInfo, "GfwListUpdateInterval");
int RetryInterval = ConfigGetInt32(ConfigInfo, "GfwListRetryInterval");
BOOL NeedBase64Decode = ConfigGetBoolean(ConfigInfo, "GfwListBase64Decode");
int Count;
if( RetryInterval < 0 )
{
RetryInterval = 0;
}
while( TRUE )
{
INFO("Loading GFW List From %s ...\n", GfwList);
if( GetFromInternet_Base(GfwList, File, FALSE) != 0 )
{
ERRORMSG("Downloading GFW List failed. Waiting %d second(s) for retry.\n", RetryInterval);
SLEEP(RetryInterval * 1000);
} else {
INFO("GFW List saved at %s.\n", File);
Count = LoadGfwListFile(File, NeedBase64Decode);
switch( Count )
{
case -1:
case -2:
case -3:
break;
case -4:
ERRORMSG("Loading GFW List failed, cannot open file %s. Stop loading.\n", File);
return -1;
break;
default:
INFO("Loading GFW List completed. %d effective items.\n", Count);
break;
}
if( UpdateInterval < 0 )
{
return 0;
}
SLEEP(UpdateInterval * 1000);
}
}
return 0;
}
int Debug_Init(ConfigFileInfo *ConfigInfo)
{
if( ConfigGetBoolean(ConfigInfo, "LogOn") == FALSE )
{
return 1;
}
sprintf(FilePath, "%s%cdnsforwarder.log", ConfigGetRawString(ConfigInfo, "LogFileFolder"), PATH_SLASH_CH);
Debug_File = fopen(FilePath, "r+");
if( Debug_File == NULL )
{
Debug_File = fopen(FilePath, "w");
CurrentLength = 0;
} else {
fseek(Debug_File, 0, SEEK_END);
CurrentLength = ftell(Debug_File);
}
ThresholdLength = ConfigGetInt32(ConfigInfo, "LogFileThresholdLength");
Debug_PrintFile("\n\n\n\n\nNew session\n");
return 0;
}
void QueryDNSListenTCPStart(void)
{
static ThreadHandle Unused;
if(Inited == FALSE)
return;
INFO("Starting TCP socket %s:%d successfully.\n", ConfigGetString(&ConfigInfo, "LocalInterface"),
ConfigGetInt32(&ConfigInfo, "LocalPort")
);
CREATE_THREAD(QueryDNSListenTCP, NULL, Unused);
#ifdef WIN32
CloseHandle(Unused);
#endif /* WIN32 */
}
/* Functions */
int QueryDNSListenUDPInit(ConfigFileInfo *ConfigInfo)
{
CompatibleAddr ListenAddr;
const char *LocalAddr = ConfigGetRawString(ConfigInfo, "LocalInterface");
int LocalPort = ConfigGetInt32(ConfigInfo, "LocalPort");
int AddrLen;
RefusingResponseCode = ConfigGetInt32(ConfigInfo, "RefusingResponseCode");
Family = GetAddressFamily(LocalAddr);
ListenSocketUDP = socket(Family, SOCK_DGRAM, IPPROTO_UDP);
if(ListenSocketUDP == INVALID_SOCKET)
{
int ErrorNum = GET_LAST_ERROR();
char ErrorMessage[320];
ErrorMessage[0] = '\0';
GetErrorMsg(ErrorNum, ErrorMessage, sizeof(ErrorMessage));
ERRORMSG("Creating UDP socket failed. %d : %s\n",
ErrorNum,
ErrorMessage
);
return -1;
}
memset(&ListenAddr, 0, sizeof(ListenAddr));
if( Family == AF_INET )
{
FILL_ADDR4(ListenAddr.Addr4, AF_INET, LocalAddr, LocalPort);
AddrLen = sizeof(struct sockaddr);
} else {
char Addr[LENGTH_OF_IPV6_ADDRESS_ASCII] = {0};
sscanf(LocalAddr, "[%s]", Addr);
ListenAddr.Addr6.sin6_family = Family;
ListenAddr.Addr6.sin6_port = htons(LocalPort);
IPv6AddressToNum(Addr, &(ListenAddr.Addr6.sin6_addr));
AddrLen = sizeof(struct sockaddr_in6);
}
if( bind(ListenSocketUDP, (struct sockaddr*)&(ListenAddr), AddrLen)
!= 0
)
{
int ErrorNum = GET_LAST_ERROR();
char ErrorMessage[320];
ErrorMessage[0] = '\0';
GetErrorMsg(ErrorNum, ErrorMessage, sizeof(ErrorMessage));
ERRORMSG("Opening UDP socket failed. %d : %s\n",
ErrorNum,
ErrorMessage
);
return -2;
}
CREATE_MUTEX(ListenMutex);
EFFECTIVE_LOCK_INIT(LockOfSendBack);
MaximumMessageSize = GetMaximumMessageSize(ListenSocketUDP);
if(MaximumMessageSize < 0)
{
MaximumMessageSize = 1000;
}
Inited = TRUE;
return 0;
}
/* Functions */
int QueryDNSListenTCPInit(void)
{
static struct _Address ListenAddr;
const char *LocalAddr = ConfigGetString(&ConfigInfo, "LocalInterface");
int LocalPort = ConfigGetInt32(&ConfigInfo, "LocalPort");
int AddrLen;
Family = GetAddressFamily(LocalAddr);
ListenSocketTCP = socket(Family, SOCK_STREAM, IPPROTO_TCP);
if(ListenSocketTCP == INVALID_SOCKET)
{
int ErrorNum = GET_LAST_ERROR();
char ErrorMessage[320];
ErrorMessage[0] = '\0';
GetErrorMsg(ErrorNum, ErrorMessage, sizeof(ErrorMessage));
ERRORMSG("Creating TCP socket failed. %d : %s\n", ErrorNum, ErrorMessage);
return -1;
}
memset(&ListenAddr, 0, sizeof(ListenAddr));
if( Family == AF_INET )
{
FILL_ADDR4(ListenAddr.Addr.Addr4, AF_INET, LocalAddr, LocalPort);
AddrLen = sizeof(struct sockaddr);
} else {
char Addr[LENGTH_OF_IPV6_ADDRESS_ASCII] = {0};
sscanf(LocalAddr, "[%s]", Addr);
ListenAddr.Addr.Addr6.sin6_family = Family;
ListenAddr.Addr.Addr6.sin6_port = htons(LocalPort);
IPv6AddressToNum(Addr, &(ListenAddr.Addr.Addr6.sin6_addr));
AddrLen = sizeof(struct sockaddr_in6);
}
if( bind(ListenSocketTCP, (struct sockaddr*)&(ListenAddr.Addr), AddrLen) != 0 )
{
int ErrorNum = GET_LAST_ERROR();
char ErrorMessage[320];
ErrorMessage[0] = '\0';
GetErrorMsg(ErrorNum, ErrorMessage, sizeof(ErrorMessage));
ERRORMSG("Opening TCP socket failed. %d : %s\n", ErrorNum, ErrorMessage);
return -2;
}
if( listen(ListenSocketTCP, 16) == SOCKET_ERROR )
{
int ErrorNum = GET_LAST_ERROR();
char ErrorMessage[320];
ErrorMessage[0] = '\0';
GetErrorMsg(ErrorNum, ErrorMessage, sizeof(ErrorMessage));
ERRORMSG("Opening TCP socket failed. %d : %s\n", ErrorNum, ErrorMessage);
return -3;
}
Inited = TRUE;
return 0;
}