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[Redirector] Add DNSHandler

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This commit is contained in:
Connection Refused
2021-10-04 17:01:29 +08:00
parent 5777429347
commit 8ffa2cdf82
10 changed files with 161 additions and 36 deletions
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31
Redirector/SocksHelper.cpp
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@@ -412,25 +412,28 @@ int SocksHelper::UDP::Read(PSOCKADDR_IN6 target, char* buffer, int length)
return bufferLength;
}
memset(target, 0, sizeof(SOCKADDR_IN6));
if (buffer[3] == 0x01)
if (target != NULL)
{
auto ipv4 = (PSOCKADDR_IN)target;
ipv4->sin_family = AF_INET;
memset(target, 0, sizeof(SOCKADDR_IN6));
if (buffer[3] == 0x01)
{
auto ipv4 = (PSOCKADDR_IN)target;
ipv4->sin_family = AF_INET;
memcpy(&ipv4->sin_addr, buffer + 4, 4);
memcpy(&ipv4->sin_port, buffer + 8, 2);
memcpy(&ipv4->sin_addr, buffer + 4, 4);
memcpy(&ipv4->sin_port, buffer + 8, 2);
memcpy(buffer, buffer + 10, (ULONG64)bufferLength - 10);
}
else
{
target->sin6_family = AF_INET6;
memcpy(buffer, buffer + 10, (ULONG64)bufferLength - 10);
}
else
{
target->sin6_family = AF_INET6;
memcpy(&target->sin6_addr, buffer + 4, 16);
memcpy(&target->sin6_port, buffer + 20, 2);
memcpy(&target->sin6_addr, buffer + 4, 16);
memcpy(&target->sin6_port, buffer + 20, 2);
memcpy(buffer, buffer + 22, (ULONG64)bufferLength - 22);
memcpy(buffer, buffer + 22, (ULONG64)bufferLength - 22);
}
}
return bufferLength - (target->sin6_family == AF_INET ? 10 : 22);