From aeceaff0280e933576651bfcc1005e2339722484 Mon Sep 17 00:00:00 2001
From: nmzik <Nmzik@mail.ru>
Date: Tue, 28 Jul 2026 00:48:36 +0200
Subject: [PATCH] new ABIs + one stub

---
 src/libs/libKernel.cpp | 22 ++++++++++++++++++++++
 src/libs/network.cpp   | 35 ++++++++++++++++++++++++++++++-----
 src/libs/network.h     |  2 ++
 3 files changed, 54 insertions(+), 5 deletions(-)

diff --git a/src/libs/libKernel.cpp b/src/libs/libKernel.cpp
index d9ecbced2..0750d2f0d 100644
--- a/src/libs/libKernel.cpp
+++ b/src/libs/libKernel.cpp
@@ -1832,6 +1832,20 @@ uint64_t KYTY_SYSV_ABI KernelGetGPI() {
 
 } // namespace LibKernel
 
+namespace LibKernelWriteThrottling {
+
+LIB_VERSION("libkernel_write_throttling", 1, "libkernel", 1, 1);
+
+static uint64_t KYTY_SYSV_ABI WriteThrottlingStub() {
+	return 0;
+}
+
+LIB_DEFINE(InitLibKernelWriteThrottling) {
+	LIB_FUNC("YFC3dBBipj8", WriteThrottlingStub);
+}
+
+} // namespace LibKernelWriteThrottling
+
 namespace Posix {
 
 LIB_VERSION("Posix", 1, "libkernel", 1, 1);
@@ -2007,6 +2021,12 @@ int64_t KYTY_SYSV_ABI recv(int s, void* buf, uint64_t len, int flags) {
 	return Network::Net::Recv(s, buf, len, flags);
 }
 
+int64_t KYTY_SYSV_ABI recvfrom(int s, void* buf, uint64_t len, int flags, void* addr,
+                               uint32_t* addrlen) {
+	PRINT_NAME();
+	return Network::Net::Recvfrom(s, buf, len, flags, addr, addrlen);
+}
+
 int KYTY_SYSV_ABI inet_pton(int af, const char* src, void* dst) {
 	PRINT_NAME();
 
@@ -2154,6 +2174,7 @@ LIB_DEFINE(InitLibKernel_1_Posix) {
 	LIB_FUNC("fZOeZIOEmLw", Posix::send);
 	LIB_FUNC("oBr313PppNE", Posix::sendto);
 	LIB_FUNC("Ez8xjo9UF4E", Posix::recv);
+	LIB_FUNC("lUk6wrGXyMw", Posix::recvfrom);
 	LIB_FUNC("4n51s0zEf0c", Posix::inet_pton);
 	LIB_FUNC("5jRCs2axtr4", Posix::inet_ntop);
 	LIB_FUNC("cfwBSQyr5Ys", cfwBSQyr5Ys);
@@ -3255,6 +3276,7 @@ LIB_DEFINE(InitLibKernel_1) {
 	InitLibKernel_1_Pthread(s);
 	LibKernelApr::InitLibKernel_1_Apr(s);
 	Posix::InitLibKernel_1_Posix(s);
+	LibKernelWriteThrottling::InitLibKernelWriteThrottling(s);
 
 	LIB_OBJECT("f7uOxY9mM1U", &LibKernel::g_stack_chk_guard);
 	LIB_OBJECT("djxxOmW6-aw", &LibKernel::g_progname);
diff --git a/src/libs/network.cpp b/src/libs/network.cpp
index ad30b2be0..c874ccde0 100644
--- a/src/libs/network.cpp
+++ b/src/libs/network.cpp
@@ -1950,17 +1950,30 @@ int64_t KYTY_SYSV_ABI Sendto(int s, const void* buf, uint64_t len, int flags, co
 }
 
 int64_t KYTY_SYSV_ABI Recv(int s, void* buf, uint64_t len, int flags) {
+	return Recvfrom(s, buf, len, flags, nullptr, nullptr);
+}
+
+int64_t KYTY_SYSV_ABI Recvfrom(int s, void* buf, uint64_t len, int flags, void* addr,
+                               uint32_t* addrlen) {
 	PRINT_NAME();
 
 	LOGF("\t s     = %d\n"
 	     "\t buf   = 0x%016" PRIx64 "\n"
 	     "\t len   = %" PRIu64 "\n"
-	     "\t flags = 0x%08" PRIx32 "\n",
-	     s, reinterpret_cast<uint64_t>(buf), len, static_cast<uint32_t>(flags));
+	     "\t flags = 0x%08" PRIx32 "\n"
+	     "\t addr  = 0x%016" PRIx64 "\n"
+	     "\t addrlen = 0x%016" PRIx64 "\n",
+	     s, reinterpret_cast<uint64_t>(buf), len, static_cast<uint32_t>(flags),
+	     reinterpret_cast<uint64_t>(addr), reinterpret_cast<uint64_t>(addrlen));
+
+	if (buf == nullptr || (addr != nullptr && addrlen == nullptr)) {
+		*Posix::GetErrorAddr() = Posix::POSIX_EFAULT;
+		return -1;
+	}
 
 	NativeSocket socket = INVALID_NATIVE_SOCKET;
-	if (buf == nullptr || !GetSocketBackend(s, &socket)) {
-		*Posix::GetErrorAddr() = (buf == nullptr ? Posix::POSIX_EFAULT : Posix::POSIX_EBADF);
+	if (!GetSocketBackend(s, &socket)) {
+		*Posix::GetErrorAddr() = Posix::POSIX_EBADF;
 		return -1;
 	}
 
@@ -1971,7 +1984,19 @@ int64_t KYTY_SYSV_ABI Recv(int s, void* buf, uint64_t len, int flags) {
 	}
 
 	const int host_len = static_cast<int>(len > 0x7fffffffu ? 0x7fffffffu : len);
-	const int result   = ::recv(socket, static_cast<char*>(buf), host_len, host_flags);
+	int       result   = 0;
+	if (addr == nullptr) {
+		result = ::recv(socket, static_cast<char*>(buf), host_len, host_flags);
+	} else {
+		sockaddr_storage host_addr {};
+		int              host_addrlen = sizeof(host_addr);
+		result = ::recvfrom(socket, static_cast<char*>(buf), host_len, host_flags,
+		                    reinterpret_cast<sockaddr*>(&host_addr), &host_addrlen);
+		if (result != SOCKET_ERROR &&
+		    ConvertHostSockaddr(&host_addr, host_addrlen, addr, addrlen) != 0) {
+			return -1;
+		}
+	}
 	if (result == SOCKET_ERROR) {
 		return SetPosixSocketError();
 	}
diff --git a/src/libs/network.h b/src/libs/network.h
index a53b1bff6..2c1741d4b 100644
--- a/src/libs/network.h
+++ b/src/libs/network.h
@@ -63,6 +63,8 @@ int64_t KYTY_SYSV_ABI Send(int s, const void* buf, uint64_t len, int flags);
 int64_t KYTY_SYSV_ABI Sendto(int s, const void* buf, uint64_t len, int flags, const void* addr,
                              uint32_t addrlen);
 int64_t KYTY_SYSV_ABI Recv(int s, void* buf, uint64_t len, int flags);
+int64_t KYTY_SYSV_ABI Recvfrom(int s, void* buf, uint64_t len, int flags, void* addr,
+                               uint32_t* addrlen);
 
 } // namespace Net