From 7b09b30ef11d1d4001a50bbb91abdfb86b954ce2 Mon Sep 17 00:00:00 2001
From: Subv <subv2112@gmail.com>
Date: Wed, 4 Oct 2017 12:05:13 -0500
Subject: [PATCH] SVC: Replace GetPointer usage with ReadCString in
ConnectToPort.
---
src/core/hle/function_wrappers.h | 15 ---------------
src/core/hle/svc.cpp | 14 +++++++++-----
2 files changed, 9 insertions(+), 20 deletions(-)
diff --git a/src/core/hle/function_wrappers.h b/src/core/hle/function_wrappers.h
index cb0b430ee..a982b2b54 100644
--- a/src/core/hle/function_wrappers.h
+++ b/src/core/hle/function_wrappers.h
@@ -151,21 +151,6 @@ void Wrap() {
FuncReturn(func(PARAM(0)).raw);
}
-template <ResultCode func(s64*, u32, u32*, u32)>
-void Wrap() {
- FuncReturn(func((s64*)Memory::GetPointer(PARAM(0)), PARAM(1),
- (u32*)Memory::GetPointer(PARAM(2)), (s32)PARAM(3))
- .raw);
-}
-
-template <ResultCode func(u32*, const char*)>
-void Wrap() {
- u32 param_1 = 0;
- u32 retval = func(¶m_1, (char*)Memory::GetPointer(PARAM(1))).raw;
- Core::CPU().SetReg(1, param_1);
- FuncReturn(retval);
-}
-
template <ResultCode func(u32*, s32, s32)>
void Wrap() {
u32 param_1 = 0;
diff --git a/src/core/hle/svc.cpp b/src/core/hle/svc.cpp
index 37eeeb860..2ae177ab5 100644
--- a/src/core/hle/svc.cpp
+++ b/src/core/hle/svc.cpp
@@ -201,17 +201,21 @@ static ResultCode UnmapMemoryBlock(Kernel::Handle handle, u32 addr) {
}
/// Connect to an OS service given the port name, returns the handle to the port to out
-static ResultCode ConnectToPort(Kernel::Handle* out_handle, const char* port_name) {
- if (port_name == nullptr)
+static ResultCode ConnectToPort(Kernel::Handle* out_handle, VAddr port_name_address) {
+ if (!Memory::IsValidVirtualAddress(port_name_address))
return Kernel::ERR_NOT_FOUND;
- if (std::strlen(port_name) > 11)
+
+ static constexpr std::size_t PortNameMaxLength = 11;
+ // Read 1 char beyond the max allowed port name to detect names that are too long.
+ std::string port_name = Memory::ReadCString(port_name_address, PortNameMaxLength + 1);
+ if (port_name.size() > PortNameMaxLength)
return Kernel::ERR_PORT_NAME_TOO_LONG;
- LOG_TRACE(Kernel_SVC, "called port_name=%s", port_name);
+ LOG_TRACE(Kernel_SVC, "called port_name=%s", port_name.c_str());
auto it = Service::g_kernel_named_ports.find(port_name);
if (it == Service::g_kernel_named_ports.end()) {
- LOG_WARNING(Kernel_SVC, "tried to connect to unknown port: %s", port_name);
+ LOG_WARNING(Kernel_SVC, "tried to connect to unknown port: %s", port_name.c_str());
return Kernel::ERR_NOT_FOUND;
}