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network: NIC spoof matching tunnel (#912)

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## Link to GitHub Issue or related Pull Request, if one exists
#911

## Description of change
Add tunnelhost/tunnelclient modes to -nicspoof so two cabs can do
LAN-style BPL matching over a real UDP path (including Wine), while
keeping the fake overlay NIC. Offline spoof remains available as before.

## Testing
DDR
This commit is contained in:
drmext
2026-09-11 07:37:45 +00:00
committed by GitHub
parent 531e7a54b3
commit 5e4afecd90
10 changed files with 2447 additions and 73 deletions
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src/spice2x/hooks/icmphook_net.h
+20 -1
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@@ -6,8 +6,27 @@ bool icmphook_is_emulated_socket(SOCKET s);
/*!
* Handle bind() for emulated ICMP sockets: records interface address and succeeds without kernel bind.
* Returns true if this socket was handled (caller should return 0).
* Returns true if this socket was handled (caller should return *out_result).
*/
bool icmphook_try_bind(SOCKET s, const struct sockaddr *name, int namelen, int *out_result);
/*!
* Divert-path helpers for when NIC tunnel owns the MinHook slots on these APIs.
* Return true if the socket is an emulated ICMP socket and was fully handled.
*/
bool icmphook_try_sendto(SOCKET s, const char *buf, int len, int flags,
const sockaddr *to, int tolen, int *out_result);
bool icmphook_try_recvfrom(SOCKET s, char *buf, int len, int flags,
sockaddr *from, int *fromlen, int *out_result);
bool icmphook_try_WSASendTo(SOCKET s, LPWSABUF lpBuffers, DWORD dwBufferCount,
LPDWORD lpNumberOfBytesSent, DWORD dwFlags, const sockaddr *lpTo,
int iTolen, LPWSAOVERLAPPED lpOverlapped,
LPWSAOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine, int *out_result);
bool icmphook_try_WSARecvFrom(SOCKET s, LPWSABUF lpBuffers, DWORD dwBufferCount,
LPDWORD lpNumberOfBytesRecvd, LPDWORD lpFlags, sockaddr *lpFrom,
LPINT lpFromlen, LPWSAOVERLAPPED lpOverlapped,
LPWSAOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine, int *out_result);
bool icmphook_try_ioctlsocket(SOCKET s, long cmd, u_long *argp, int *out_result);
bool icmphook_try_closesocket(SOCKET s, int *out_result);
void icmphook_net_init();