Add support for user_object/user_handle_table (#677)

Fixes #641

This PR is my attempt to add support for user32 objects and the user32
handle table. I also added a test, but as expected, it fails on Windows
2022. I’ll try to fix that another day, but feel free to review the code
😄

src/common/platform/platform.hpp

@@ -17,6 +17,7 @@
 #include "unicode.hpp"
 #include "status.hpp"
 #include "process.hpp"
+#include "user.hpp"
 #include "kernel_mapped.hpp"
 #include "memory.hpp"
 #include "file_management.hpp"

src/common/platform/primitives.hpp

@@ -50,6 +50,14 @@ typedef union _LARGE_INTEGER
 
 using BYTE = std::uint8_t;
 #define CHAR          BYTE
+
+typedef struct _RECT
+{
+    LONG left;
+    LONG top;
+    LONG right;
+    LONG bottom;
+} RECT;
 #endif
 
 using WORD = std::uint16_t;

src/common/platform/user.hpp

@@ -0,0 +1,117 @@
+#pragma once
+
+#include <cstdint>
+
+// NOLINTBEGIN(modernize-use-using,cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+
+struct USER_SERVERINFO
+{
+    DWORD dwSRVIFlags;
+    uint64_t cHandleEntries;
+    uint8_t unknown[0x1000];
+};
+
+struct USER_DISPINFO
+{
+    DWORD dwMonitorCount;
+    EMULATOR_CAST(uint64_t, USER_MONITOR*) pPrimaryMonitor;
+    uint8_t unknown[0xFF];
+};
+
+struct USER_HANDLEENTRY
+{
+    uint64_t pHead;
+    uint64_t pOwner;
+    uint64_t unknown;
+    uint8_t bType;
+    uint8_t bFlags;
+    uint16_t wUniq;
+};
+static_assert(sizeof(USER_HANDLEENTRY) == 0x20);
+
+struct USER_SHAREDINFO
+{
+    uint64_t psi;
+    uint64_t aheList;
+    uint32_t HeEntrySize;
+    uint64_t pDispInfo;
+    uint8_t unknown[0xFF];
+};
+
+struct USER_THROBJHEAD
+{
+    struct
+    {
+        uint64_t h;
+        uint32_t cLockObj;
+    } h;
+    uint64_t pti;
+};
+
+struct USER_THRDESKHEAD
+{
+    USER_THROBJHEAD h;
+    uint64_t rpdesk;
+    uint64_t pSelf;
+};
+
+enum USER_HANDLETYPE : uint8_t
+{
+    TYPE_FREE = 0,
+    TYPE_WINDOW = 1,
+    TYPE_MENU = 2,
+    TYPE_CURSOR = 3,
+    TYPE_SETWINDOWPOS = 4,
+    TYPE_HOOK = 5,
+    TYPE_CLIPDATA = 6,
+    TYPE_CALLPROC = 7,
+    TYPE_ACCELTABLE = 8,
+    TYPE_DDEACCESS = 9,
+    TYPE_DDECONV = 10,
+    TYPE_DDEXACT = 11,
+    TYPE_MONITOR = 12,
+    TYPE_KBDLAYOUT = 13,
+    TYPE_KBDFILE = 14,
+    TYPE_WINEVENTHOOK = 15,
+    TYPE_TIMER = 16,
+    TYPE_INPUTCONTEXT = 17,
+    TYPE_HIDDATA = 18,
+    TYPE_DEVICEINFO = 19,
+    TYPE_TOUCHINPUTINFO = 20,
+    TYPE_GESTUREINFOOBJ = 21,
+    TYPE_CTYPES = 22,
+    TYPE_GENERIC = 255
+};
+
+struct USER_MONITOR
+{
+    EMULATOR_CAST(uint64_t, HMONITOR) hmon;
+    uint8_t unknown1[0x14];
+    RECT rcMonitor;
+    RECT rcWork;
+    union
+    {
+        struct
+        {
+            uint16_t monitorDpi;
+            uint16_t nativeDpi;
+        } b26;
+        struct
+        {
+            uint32_t unknown1;
+            uint16_t monitorDpi;
+            uint16_t nativeDpi;
+            uint16_t cachedDpi;
+            uint16_t unknown2;
+            RECT rcMonitorDpiAware;
+        } b20;
+    };
+    uint8_t unknown4[0xFF];
+};
+
+struct USER_WINDOW
+{
+    uint8_t unknown[0xFF];
+};
+
+// NOLINTEND(modernize-use-using,cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)