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authorBobTheBob <32057864+BobTheBob9@users.noreply.github.com>2022-01-02 22:32:36 +0000
committerGitHub <noreply@github.com>2022-01-02 22:32:36 +0000
commit3f629680f71b4694bd4eb78726537a91e10a2352 (patch)
tree137e44e28bbe372adeb616e3f20156ba23c08655 /loader_wsock32_proxy/hookutils.cpp
parentff875c0551c54bb187b5320b81029f8fe7f010fb (diff)
parentf7b96d1048acddc343244ddec87a996ebaf7cb5b (diff)
downloadNorthstarLauncher-3f629680f71b4694bd4eb78726537a91e10a2352.tar.gz
NorthstarLauncher-3f629680f71b4694bd4eb78726537a91e10a2352.zip
Merge pull request #19 from p0358/main
Big refactor of launching process
Diffstat (limited to 'loader_wsock32_proxy/hookutils.cpp')
-rw-r--r--loader_wsock32_proxy/hookutils.cpp71
1 files changed, 71 insertions, 0 deletions
diff --git a/loader_wsock32_proxy/hookutils.cpp b/loader_wsock32_proxy/hookutils.cpp
new file mode 100644
index 00000000..8603cb35
--- /dev/null
+++ b/loader_wsock32_proxy/hookutils.cpp
@@ -0,0 +1,71 @@
+#include "pch.h"
+#include "../NorthstarDedicatedTest/hookutils.h"
+
+#define ERROR(...) { char err[2048]; sprintf_s(err, __VA_ARGS__); MessageBoxA(GetForegroundWindow(), err, "Northstar Wsock32 Proxy Error", 0); }
+
+TempReadWrite::TempReadWrite(void* ptr)
+{
+ m_ptr = ptr;
+ MEMORY_BASIC_INFORMATION mbi;
+ VirtualQuery(m_ptr, &mbi, sizeof(mbi));
+ VirtualProtect(mbi.BaseAddress, mbi.RegionSize, PAGE_EXECUTE_READWRITE, &mbi.Protect);
+ m_origProtection = mbi.Protect;
+}
+
+TempReadWrite::~TempReadWrite()
+{
+ MEMORY_BASIC_INFORMATION mbi;
+ VirtualQuery(m_ptr, &mbi, sizeof(mbi));
+ VirtualProtect(mbi.BaseAddress, mbi.RegionSize, m_origProtection, &mbi.Protect);
+}
+
+
+void HookEnabler::CreateHook(LPVOID ppTarget, LPVOID ppDetour, LPVOID* ppOriginal, const char* targetName)
+{
+ // the macro for this uses ppTarget's name as targetName, and this typically starts with &
+ // targetname is used for debug stuff and debug output is nicer if we don't have this
+ if (*targetName == '&')
+ targetName++;
+
+ if (MH_CreateHook(ppTarget, ppDetour, ppOriginal) == MH_OK)
+ {
+ HookTarget* target = new HookTarget;
+ target->targetAddress = ppTarget;
+ target->targetName = (char*)targetName;
+
+ m_hookTargets.push_back(target);
+ }
+ else
+ {
+ if (targetName != nullptr)
+ {
+ ERROR("MH_CreateHook failed for function %s", targetName);
+ }
+ else
+ {
+ ERROR("MH_CreateHook failed for unknown function");
+ }
+ }
+}
+
+HookEnabler::~HookEnabler()
+{
+ for (auto& hook : m_hookTargets)
+ {
+ if (MH_EnableHook(hook->targetAddress) != MH_OK)
+ {
+ if (hook->targetName != nullptr)
+ {
+ ERROR("MH_EnableHook failed for function %s", hook->targetName);
+ }
+ else
+ {
+ ERROR("MH_EnableHook failed for unknown function");
+ }
+ }
+ else
+ {
+ //ERROR("Enabling hook %s", hook->targetName);
+ }
+ }
+} \ No newline at end of file