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dllmain.c
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dllmain.c
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/*
*****************************************************************
* Drakan: Order of the Flame All in One Patch (DLL part) *
* *
* Copyright © 2015 - 2018 UCyborg *
* *
* This software uses 3rd-party code, which is subject *
* to their respective licenses. *
* *
* This software is provided 'as-is', without any express *
* or implied warranty. In no event will the authors be held *
* liable for any damages arising from the use of this *
* software. *
* *
* 1. The origin of this software must not be misrepresented; *
* you must not claim that you wrote the original software. *
* If you use this software in a product, an acknowledgment *
* (see the following) in the product documentation is *
* required. *
* *
* 2. Altered versions in source or binary form must be *
* plainly marked as such, and must not be misrepresented *
* as being the original software. *
* *
* 3. This notice may not be removed or altered from any *
* source or binary distribution. *
*****************************************************************
*/
#define _CRT_SECURE_NO_WARNINGS
#define DIRECTDRAW_VERSION 0x0600
#define DIRECTINPUT_VERSION 0x0600
#define DIRECTSOUND_VERSION 0x0600
#if _MSC_VER >= 1400
#include <intrin.h>
#endif
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <WinSock2.h>
#include <Windows.h>
#include <ImageHlp.h>
#include <ShlObj.h>
#include <ddraw.h>
#include <dinput.h>
#include <dsound.h>
#include "detours.h"
#pragma comment(lib, "ddraw")
#pragma comment(lib, "ImageHlp")
#pragma comment(lib, "WinMM")
#pragma comment(lib, "WS2_32")
#ifndef _countof
#define _countof(array) (sizeof(array)/sizeof(array[0]))
#endif
#define NAKED __declspec(naked)
#define EXE_CHECKSUM 0x89E91
#define RFL_CHECKSUM 0x1B9740
#define INI_NAME "Arokh.ini"
// not sure what exactly causes this to be needed
// uncomment if it crashes on Windows 9x
//#define WIN9X_HACK
void DebugPrintf(char *fmt, ...)
{
// supposedly max length that can be delivered via OutputDebugString
char string[4092];
va_list ap;
va_start(ap, fmt);
_vsnprintf(string, sizeof(string), fmt, ap);
va_end(ap);
OutputDebugString(string);
}
LONG (WINAPI *O_RegSetValueEx)(HKEY, LPCTSTR, DWORD, DWORD, /*const*/ BYTE *, DWORD);
LONG WINAPI H_RegSetValueEx(HKEY hKey, LPCTSTR lpValueName, DWORD Reserved, DWORD dwType, /*const*/ BYTE *lpData, DWORD cbData)
{
if (!strcmp(lpValueName, "Settings101"))
{
if (*(PDWORD_PTR)0x487A2C)
{
// this updates fullscreen/windowed flag on exit as the game doesn't do it
lpData[32] ^= (-!(*(PBYTE)((*(PDWORD_PTR)0x487A2C) + 0x30) & 2) ^ lpData[32]) & 1;
}
}
return O_RegSetValueEx(hKey, lpValueName, Reserved, dwType, lpData, cbData);
}
BOOL __stdcall DDCheckWindowedCap(GUID FAR *lpGUID)
{
LPDIRECTDRAW lpDD;
DDCAPS DDDriverCaps;
if (!DirectDrawCreate(lpGUID, &lpDD, NULL))
{
DDDriverCaps.dwSize = sizeof(DDCAPS);
IDirectDraw_GetCaps(lpDD, &DDDriverCaps, NULL);
IDirectDraw_Release(lpDD);
return DDDriverCaps.dwCaps2 & DDCAPS2_CANRENDERWINDOWED;
}
return FALSE;
}
typedef struct displaydevice_s
{
GUID *device;
BOOL windowedAllowed;
struct displaydevice_s *next;
} displaydevice_t;
// engine's representation of enumerated display devices
typedef struct riotdisplaydevice_s
{
BOOL primary;
GUID guid;
} riotdisplaydevice_t;
displaydevice_t displayDeviceHead;
displaydevice_t *displayDevicePrev = &displayDeviceHead;
// the original function in Drakan.exe has been extended a little
// the engine assumes windowed mode shouldn't be available for non-primary display devices,
// which is a valid assumption for 3D accelerators of the time (Voodoo cards), but not for modern multi-monitor setups
int (__fastcall *O_InitDisplay)(void *, void *, BOOL, BOOL);
int __fastcall H_InitDisplay(void *This, void *unused, BOOL windowedAllowed, BOOL dedicated)
{
riotdisplaydevice_t *riotDevice;
if (dedicated) SetErrorMode(SEM_NOGPFAULTERRORBOX);
riotDevice = (riotdisplaydevice_t *)0x4835B4;
if (displayDeviceHead.next)
{
displaydevice_t *next;
displaydevice_t *cur = displayDeviceHead.next;
do
{
// loop through enumerated devices and set windowedAllowed if applicable for the device user selected
if (!windowedAllowed && !riotDevice->primary && !memcmp(cur->device, &riotDevice->guid, sizeof(GUID)))
{
windowedAllowed = cur->windowedAllowed;
}
// and free the memory while at it, it won't be needed again
next = cur->next;
free(cur->device);
free(cur);
cur = next;
} while (cur);
displayDeviceHead.next = NULL;
}
else if (!riotDevice->primary)
{
windowedAllowed = DDCheckWindowedCap(&riotDevice->guid);
}
// the result of windowedAllowed variable determines whether fullscreen toggle key (F4) actually budges
// the check to determine whether Windowed mode checkbox in Riot Engine Options should work is somewhere else in Drakan.exe
return O_InitDisplay(This, unused, windowedAllowed, dedicated);
}
BOOL (WINAPI *O_DDEnumCallback)(GUID FAR *, LPSTR, LPSTR, LPVOID);
BOOL WINAPI DDEnumCallback(GUID FAR *lpGUID, LPSTR lpDriverDescription, LPSTR lpDriverName, LPVOID lpContext)
{
// we haven't enumerated primary device yet, where windowed mode is always allowed
if (!displayDeviceHead.windowedAllowed)
{
displayDeviceHead.windowedAllowed = TRUE;
}
else
{
if (displayDevicePrev->next = malloc(sizeof(displaydevice_t)))
{
if (displayDevicePrev->next->device = malloc(sizeof(GUID)))
{
memcpy(displayDevicePrev->next->device, lpGUID, sizeof(GUID));
displayDevicePrev->next->windowedAllowed = DDCheckWindowedCap(lpGUID);
displayDevicePrev->next->next = NULL;
displayDevicePrev = displayDevicePrev->next;
}
else
{
free(displayDevicePrev->next);
displayDevicePrev->next = NULL;
}
}
}
return O_DDEnumCallback(lpGUID, lpDriverDescription, lpDriverName, lpContext);
}
BOOL WINAPI DDEnumCallbackEx(GUID FAR *lpGUID, LPSTR lpDriverDescription, LPSTR lpDriverName, LPVOID lpContext, HMONITOR hm)
{
return DDEnumCallback(lpGUID, lpDriverDescription, lpDriverName, lpContext);
}
HRESULT (WINAPI *PTR_DirectDrawEnumerateEx)(LPDDENUMCALLBACKEX, LPVOID, DWORD);
HRESULT (WINAPI *O_DirectDrawEnumerate)(LPDDENUMCALLBACK, LPVOID);
HRESULT WINAPI H_DirectDrawEnumerate(LPDDENUMCALLBACK lpCallback, LPVOID lpContext)
{
// save the address of engine's callback function so we can call it after saving needed information about each display device
O_DDEnumCallback = lpCallback;
// DirectDrawEnumerateEx doesn't exist on Windows NT 4.0
if (PTR_DirectDrawEnumerateEx) return PTR_DirectDrawEnumerateEx(DDEnumCallbackEx, lpContext, DDENUM_ATTACHEDSECONDARYDEVICES | DDENUM_DETACHEDSECONDARYDEVICES | DDENUM_NONDISPLAYDEVICES);
return O_DirectDrawEnumerate(DDEnumCallback, lpContext);
}
typedef struct displaymode_s
{
DWORD width;
DWORD height;
DWORD bpp;
} displaymode_t;
// this array is used for display modes in windowed mode
displaymode_t *displayModes = (displaymode_t *)0x48C000;
size_t index;
HRESULT WINAPI EnumModesCallback(LPDDSURFACEDESC lpDDSurfaceDesc, LPVOID lpContext)
{
if (index >= 128) return DDENUMRET_CANCEL;
// we're only interested in modes matching our desktop bit depth
if (lpDDSurfaceDesc->ddpfPixelFormat.dwRGBBitCount == ((LPDDSURFACEDESC)lpContext)->ddpfPixelFormat.dwRGBBitCount)
{
displayModes[index].width = lpDDSurfaceDesc->dwWidth;
displayModes[index].height = lpDDSurfaceDesc->dwHeight;
displayModes[index].bpp = lpDDSurfaceDesc->ddpfPixelFormat.dwRGBBitCount;
index++;
}
return DDENUMRET_OK;
}
int CompareDisplayModes(const void *p, const void *q)
{
int pp = ((displaymode_t *)p)->width * ((displaymode_t *)p)->height;
int qq = ((displaymode_t *)q)->width * ((displaymode_t *)q)->height;
return (pp - qq);
}
// because Win95 doesn't have this :P
HMONITOR (WINAPI *PTR_MonitorFromWindow)(HWND, DWORD);
BOOL (WINAPI *PTR_GetMonitorInfo)(HMONITOR, LPMONITORINFO);
/*
*****************************************************************
* Borderless windowed mode magic *
* *
* This mostly relies on tracking window state using vars below *
* and the sequence of calls to those APIs made by the game *
* and adjusting the window properties accordingly. Forgot *
* exact meaning of those flags, (windowFlags & 4) means just *
* started the game. *
* *
* It's a little more complicated than it would need to be *
* because if we show the window without borders for the first *
* time, putting the borders back at later point results in the *
* missing icon. *
*****************************************************************
*/
DWORD windowFlags = 4;
LONG currentWidth;
LONG currentHeight;
LONG width;
LONG height;
// to be saved to Arokh.ini, first needed here
char BorderlessWindowHooks[] = "0";
char BorderlessTopmost[] = "0";
BOOL (WINAPI *O_AdjustWindowRectEx)(LPRECT, DWORD, BOOL, DWORD);
BOOL WINAPI H_AdjustWindowRectEx(LPRECT lpRect, DWORD dwStyle, BOOL bMenu, DWORD dwExStyle)
{
HWND hWnd;
// dedicated server is running
if (*(PDWORD)0x487E18)
{
return O_AdjustWindowRectEx(lpRect, dwStyle, bMenu, dwExStyle);
}
// we need the window handle to work with
__asm
{
mov eax, dword ptr ss:[ebp + 4h]
mov dword ptr ss:[hWnd], eax
}
// if we're in fullscreeen mode
if (*(PBYTE)((*(PDWORD_PTR)0x487A2C) + 0x30) & 2)
{
if (dwStyle & WS_POPUP)
{
dwStyle = WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_MINIMIZEBOX | WS_VISIBLE;
SetWindowLongPtr(hWnd, GWL_STYLE, dwStyle);
windowFlags = 1;
}
return O_AdjustWindowRectEx(lpRect, dwStyle, bMenu, dwExStyle);
}
// figure out dimensions of the monitor on which our window resides
if (PTR_MonitorFromWindow)
{
HMONITOR hMonitor;
MONITORINFO hInfo;
hMonitor = PTR_MonitorFromWindow(hWnd, MONITOR_DEFAULTTONEAREST);
hInfo.cbSize = sizeof(MONITORINFO);
PTR_GetMonitorInfo(hMonitor, &hInfo);
currentWidth = hInfo.rcMonitor.right - hInfo.rcMonitor.left;
currentHeight = hInfo.rcMonitor.bottom - hInfo.rcMonitor.top;
}
else
{
currentWidth = GetSystemMetrics(SM_CXSCREEN);
currentHeight = GetSystemMetrics(SM_CYSCREEN);
}
// get dimensions of window client area (game resolution)
width = lpRect->right;
height = lpRect->bottom;
// decide whether we need to change the borders
if (width >= currentWidth && height >= currentHeight)
{
if (!(windowFlags & 4))
{
if (dwStyle & WS_CAPTION)
{
dwStyle = WS_POPUP | WS_VISIBLE;
SetWindowLongPtr(hWnd, GWL_STYLE, dwStyle);
windowFlags = 3;
}
}
else
{
dwStyle = WS_POPUP | WS_VISIBLE;
windowFlags |= 2;
}
}
else
{
if (dwStyle & WS_POPUP)
{
dwStyle = WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_MINIMIZEBOX | WS_VISIBLE;
SetWindowLongPtr(hWnd, GWL_STYLE, dwStyle);
windowFlags = 1;
}
}
return O_AdjustWindowRectEx(lpRect, dwStyle, bMenu, dwExStyle);
}
BOOL (WINAPI *O_SetWindowPos)(HWND, HWND, int, int, int, int, UINT);
BOOL WINAPI H_SetWindowPos(HWND hWnd, HWND hWndInsertAfter, int X, int Y, int cx, int cy, UINT uFlags)
{
// dedicated server is running
if (*(PDWORD)0x487E18)
{
return O_SetWindowPos(hWnd, hWndInsertAfter, X, Y, cx, cy, uFlags);
}
if (uFlags == (SWP_NOMOVE | SWP_NOZORDER) && *(PBYTE)((*(PDWORD_PTR)0x487A2C) + 0x30) & 2)
{
// ignore this call in fullscreen or it may mess up other windows' sizes and positions
return FALSE;
}
else if (*BorderlessWindowHooks != '0')
{
if (uFlags & SWP_NOMOVE)
{
if (windowFlags & 1)
{
uFlags |= SWP_FRAMECHANGED;
if (windowFlags & 2)
{
uFlags &= ~SWP_NOMOVE;
if (PTR_MonitorFromWindow)
{
HMONITOR hMonitor;
MONITORINFO hInfo;
hMonitor = PTR_MonitorFromWindow(hWnd, MONITOR_DEFAULTTONEAREST);
hInfo.cbSize = sizeof(MONITORINFO);
PTR_GetMonitorInfo(hMonitor, &hInfo);
X = hInfo.rcMonitor.left;
Y = hInfo.rcMonitor.top;
}
else
{
X = Y = 0;
}
if (*BorderlessTopmost != '0')
{
hWndInsertAfter = HWND_TOPMOST;
uFlags &= ~SWP_NOZORDER;
}
}
else if (*BorderlessTopmost != '0')
{
hWndInsertAfter = HWND_NOTOPMOST;
uFlags &= ~SWP_NOZORDER;
}
windowFlags &= ~1;
}
}
else if (windowFlags & 2)
{
if (PTR_MonitorFromWindow)
{
HMONITOR hMonitor;
MONITORINFO hInfo;
hMonitor = PTR_MonitorFromWindow(hWnd, MONITOR_DEFAULTTONEAREST);
hInfo.cbSize = sizeof(MONITORINFO);
PTR_GetMonitorInfo(hMonitor, &hInfo);
X = hInfo.rcMonitor.left;
Y = hInfo.rcMonitor.top;
}
else
{
X = Y = 0;
}
if (*BorderlessTopmost != '0')
{
hWndInsertAfter = HWND_TOPMOST;
}
}
}
return O_SetWindowPos(hWnd, hWndInsertAfter, X, Y, cx, cy, uFlags);
}
BOOL (WINAPI *O_ShowWindow)(HWND, int);
BOOL WINAPI H_ShowWindow(HWND hWnd, int nCmdShow)
{
BOOL ret = O_ShowWindow(hWnd, nCmdShow);
// no dedicated server, please
if (!(*(PDWORD)0x487E18) && (windowFlags & 4))
{
if (currentWidth && width >= currentWidth && height >= currentHeight)
{
HWND hWndInsertAfter = *BorderlessTopmost != '0' ? HWND_TOPMOST : hWnd;
SetWindowLongPtr(hWnd, GWL_STYLE, WS_POPUP | WS_VISIBLE);
O_SetWindowPos(hWnd, hWndInsertAfter, 0, 0, 0, 0, SWP_FRAMECHANGED | SWP_NOSIZE);
}
windowFlags &= ~4;
}
return ret;
}
// just minimizes the borderless window at user discretion
LRESULT (CALLBACK *O_WindowProc)(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK H_WindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
if (uMsg == WM_ACTIVATE && !LOWORD(wParam))
{
if (!(*(PDWORD_PTR)0x487A2C && *(PBYTE)((*(PDWORD_PTR)0x487A2C) + 0x30) & 2))
{
if (windowFlags & 2)
{
O_ShowWindow(hWnd, SW_MINIMIZE);
}
}
}
return O_WindowProc(hWnd, uMsg, wParam, lParam);
}
// allow resizing of dedicated server window if desired, not that nice without adjusting the actual output resolution
HWND (WINAPI *O_CreateWindowEx)(DWORD, LPCTSTR, LPCTSTR, DWORD, int, int, int, int, HWND, HMENU, HINSTANCE, LPVOID);
HWND WINAPI H_CreateWindowEx(DWORD dwExStyle, LPCTSTR lpClassName, LPCTSTR lpWindowName, DWORD dwStyle, int x, int y, int nWidth, int nHeight, HWND hWndParent, HMENU hMenu, HINSTANCE hInstance, LPVOID lpParam)
{
if (*(PDWORD)0x487E18 && lpWindowName && !strcmp(lpWindowName, "Riot Engine"))
{
dwStyle |= WS_THICKFRAME | WS_MAXIMIZEBOX;
}
return O_CreateWindowEx(dwExStyle, lpClassName, lpWindowName, dwStyle, x, y, nWidth, nHeight, hWndParent, hMenu, hInstance, lpParam);
}
/*
*****************************************************
* Simple solution to give us working server browser *
* *
* Original server browser code uses HTTP protocol *
*****************************************************
*/
char serverListURL[128];
char *pathToServersTXT;
// master server address and location of server list are separate arguments,
// splitting code is in DllMain
void (__fastcall *O_SetMasterAddr)(void *, void *, char *, char *);
void __fastcall H_SetMasterAddr(void *This, void *unused, char *oMasterServerAddr, char *oPathToServersTXT)
{
O_SetMasterAddr(This, unused, serverListURL, pathToServersTXT);
}
char gameServerAddr[32];
void (*O_FixServerAddr)(void);
void H_FixServerAddr(void)
{
char *recvServerAddr;
char *recvServerPort;
// get the game server address from master
__asm mov recvServerAddr, edx
// separate IP from port
recvServerPort = strchr(recvServerAddr, ':');
*recvServerPort++ = '\0';
// feed the address in format the game likes
// I don't know the purpose of middle integer
// it's not used by the game
sprintf(gameServerAddr, "%s 0 %s", recvServerAddr, recvServerPort);
__asm mov edx, offset gameServerAddr
O_FixServerAddr();
}
/*
**********************************************************
* NEW server browser backend code using GameSpy protocol *
**********************************************************
*/
// Some good stuff borrowed from Luigi Auriemma's gslist utility
#include "gsmsalg.h"
#define BUFFERSIZE 8192
#define GSQUERY "\\gamename\\drakan" \
"\\enctype\\0" \
"\\validate\\%s" \
"\\final\\" \
"\\list\\cmp" \
"\\gamename\\drakan"
/*
finds the value of key in the data buffer and return a new
string containing the value or NULL if nothing has been found
no modifications are made on the input data
*/
char * __stdcall keyval(char *data, char *key)
{
size_t nt = 0,
skip = 1;
for (;;)
{
char *p = strchr(data, '\\');
if (nt & 1)
{
if (p && !_strnicmp(data, key, p - data))
{
skip = 0;
}
}
else
{
if (!skip)
{
char *val;
size_t len;
if (!p) p = data + strlen(data);
len = p - data;
val = malloc(len + 1);
if (val)
{
memcpy(val, data, len);
val[len] = '\0';
}
// unlikely
else val = (char *)-1;
return val;
}
}
if (!p) break;
nt++;
data = p + 1;
}
return NULL;
}
// pre-defined 2nd argument values for PrintBrowserStatus function
const BYTE browserStatusNormal[] = { 0xE0, 0xFF, 0xFF, 0xFF, 0xE0, 0xFF, 0xFF, 0xFF, 0x20, 0xB0, 0xFF, 0xFF, 0x20, 0xB0, 0xFF, 0xFF };
const BYTE browserStatusOrange[] = { 0x20, 0xFF, 0xFF, 0xFF, 0x20, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00, 0xFF, 0xFF };
const BYTE browserStatusGreen[] = { 0x00, 0xFF, 0xD0, 0xFF, 0x00, 0xFF, 0xD0, 0xFF, 0x00, 0x80, 0x40, 0xFF, 0x00, 0x80, 0x40, 0xFF };
HMODULE hDragon;
void (__fastcall *RFL_PrintBrowserStatus)(void *, void *, char *, const BYTE *);
// displays specified text in a little black rectangle in the Join Game menu
void __stdcall PrintBrowserStatus(char *text, const BYTE *color)
{
void *This = (void *)(*(PDWORD_PTR)((DWORD_PTR)hDragon + 0x1855D8));
if (This)
{
RFL_PrintBrowserStatus(This, NULL, text, color);
}
}
int (__fastcall *O_InitConnect)(void *, void *, char *, u_long, DWORD);
int __fastcall H_InitConnect(void *This, void *unused, char *addr, u_long port, DWORD timeout)
{
int ret;
if (!(ret = O_InitConnect(This, unused, addr, port, timeout)))
{
PrintBrowserStatus("Unable To Resolve Hostname", browserStatusOrange);
}
return ret;
}
u_long tcpport;
void (__fastcall *O_Connect)(void *, void *, u_long, char *, int, int);
void __fastcall H_Connect(void *This, void *unused, u_long port, char *addr, DWORD timeout, int unkwn)
{
O_Connect(This, unused, tcpport, addr, timeout, unkwn);
}
#define SB_BASIC_SECURE_DONE (1 << 0)
#define SB_RECV_SHOWN (1 << 1)
char *recvBuf;
size_t recvLen;
size_t dynLen;
DWORD sbFlags;
int (__fastcall *O_ConnectCallback)(void *, void *, DWORD);
int __fastcall H_ConnectCallback(void *This, void *unused, DWORD err)
{
if (!err)
{
sbFlags = 0;
recvLen = 0;
dynLen = BUFFERSIZE;
recvBuf = malloc(dynLen + 1);
PrintBrowserStatus("Connection Established", browserStatusGreen);
}
else
{
char *errorStr;
switch (err)
{
case WSAECONNREFUSED:
errorStr = "Connection Refused";
break;
case WSAETIMEDOUT:
errorStr = "Connection Timed Out";
break;
case WSAENETUNREACH:
errorStr = "Unreachable Network";
break;
default:
errorStr = "Connection Attempt Failed With Error";
}
PrintBrowserStatus(errorStr, browserStatusOrange);
}
return 1;
}
#pragma pack(push, 1)
typedef struct ipport_s
{
u_long ip;
u_short port;
} ipport_t;
#pragma pack(pop)
int (__stdcall *O_ReceiveCallback)(DWORD, u_long, void *);
int __stdcall H_ReceiveCallback(DWORD err, u_long size, void *ptr)
{
SOCKET sock;
if (err)
{
return O_ReceiveCallback(err, size, ptr);
}
sock = *(SOCKET *)(&ptr + 4);
if (recvBuf)
{
if (recvLen + size > dynLen)
{
char *buf;
do dynLen += BUFFERSIZE; while (recvLen + size > dynLen);
buf = realloc(recvBuf, dynLen + 1);
if (buf) recvBuf = buf;
else
{
shutdown(sock, SD_BOTH);
DebugPrintf("ReceiveCallback() (2)::Out of memory, unable to reallocate %u bytes, shutting down socket %d\n", dynLen, sock);
return 1;
}
}
if (recv(sock, recvBuf + recvLen, size, 0) == SOCKET_ERROR)
{
return O_ReceiveCallback(err = WSAGetLastError(), size, ptr);
}
recvLen += size;
recvBuf[recvLen] = '\0';
if (!(sbFlags & SB_BASIC_SECURE_DONE))
{
char *validate;
char *secure;
int sendlen;
validate = &recvBuf[dynLen / 2];
secure = keyval(recvBuf, "secure");
if (secure)
{
if (secure != (char *)-1)
{
gsseckey(validate, secure, "zCt4De", 0);
free(secure);
PrintBrowserStatus("Authenticating...", browserStatusOrange);
}
else
{
shutdown(sock, SD_BOTH);
DebugPrintf("ReceiveCallback() (2)::Out of memory, NULL secure, shutting down socket %d\n", sock);
return 1;
}
}
else
{
*validate = '\0';
DebugPrintf("ReceiveCallback() (2)::Received reply from master server: %s\nSending query with empty validate field...\n", recvBuf);
}
sendlen = sprintf(recvBuf, GSQUERY, validate);
send(sock, recvBuf, sendlen, 0);
recvLen = 0;
sbFlags |= SB_BASIC_SECURE_DONE;
}
else if (!(sbFlags & SB_RECV_SHOWN))
{
sbFlags |= SB_RECV_SHOWN;
PrintBrowserStatus("Receiving...", browserStatusGreen);
}
}
else
{
shutdown(sock, SD_BOTH);
DebugPrintf("ReceiveCallback() (2)::Out of memory, NULL recvBuf, shutting down socket %d\n", sock);
}
return 1;
}
void (__fastcall *O_Close)(void *, void *);
void __fastcall H_Close(void *This, void *unused)
{
if (recvBuf)
{
free(recvBuf);
recvBuf = NULL;
}
O_Close(This, unused);
}
int (__fastcall *O_CloseCallback)(void *, void *, DWORD);
int __fastcall H_CloseCallback(void *This, void *unused, DWORD err)
{
if (!err)
{
if (recvLen >= 7 && !strcmp(recvBuf + recvLen - 7, "\\final\\"))
{
recvLen -= 7;
if (recvLen)
{
ipport_t *ipport;
for (ipport = (ipport_t *)recvBuf; recvLen >= 6; ipport++, recvLen -= 6)
{
char *ip = inet_ntoa(*(struct in_addr *)&ipport->ip);
u_long port = ntohs(ipport->port);
__asm
{
mov eax, dword ptr ds:[487bf4h]
push 2
mov ecx, dword ptr ds:[eax + 5eh]
push port
mov edx, dword ptr ds:[ecx]
push ip
call dword ptr ds:[edx + 4h]
}
}
PrintBrowserStatus("Querying Servers...", browserStatusGreen);
}
else PrintBrowserStatus("No Servers Listed", browserStatusOrange);
}
else PrintBrowserStatus("Unexpected Response", browserStatusOrange);
}
else
{
char *errorStr;
switch (err)
{
case WSAECONNRESET:
errorStr = "Connection Reset";
break;
case WSAECONNABORTED:
errorStr = "Connection Aborted";
break;
default:
errorStr = "Connection Closed With Error";
}
PrintBrowserStatus(errorStr, browserStatusOrange);
}
return O_CloseCallback(This, unused, err);
}
/*
***********************************************************************
* Texel alignment *
* *
* Adjusts coordinates for text rendering a little to fix distorted *
* text when multisample anti-aliasing is used. Effective when *
* Fix Texture Coordinates checkbox is checked in Riot Engine Options. *
***********************************************************************
*/
DWORD_PTR retAddr = 0x437BA6;
void (*O_TexelAlignment)(void);
NAKED void H_TexelAlignment(void)
{
__asm
{
// hack to prevent the map misalignment
fld dword ptr ss:[esp + 158h]
fcomp dword ptr ds:[4793bch]
fstsw ax
test ah, 41h
jz end
mov eax, dword ptr ds:[ebx + 18h]
mov dword ptr ss:[esp + 38h], 0h
mov dword ptr ss:[esp + 34h], eax
lea eax, [esp + 50h]
fild qword ptr ss:[esp + 34h]
fdivr dword ptr ds:[47951ch]
fld dword ptr ds:[47951ch]
mov ecx, 4h
loopy:
// D3DVERTEX.x -= 0.5f;
fld dword ptr ds:[eax]
fsub st,st(1)
fstp dword ptr ds:[eax]
// D3DVERTEX.y -= 0.5f;
fld dword ptr ds:[eax + 4h]
fsub st,st(1)
fstp dword ptr ds:[eax + 4h]
// ???
// D3DVERTEX.tu -= 0.5f / [esp + 34h];
fld dword ptr ds:[eax + 18h]
fsub st,st(2)
fstp dword ptr ds:[eax + 18h]
add eax, 38h
dec ecx
jnz loopy
fstp st
fstp st
end:
jmp dword ptr ds:[retAddr]
}
}
/*
**********************************************************************
* Calls DirectDraw SetDisplayMode method with specified refresh rate *
**********************************************************************
*/
DWORD refreshRate;
void (*O_SetDisplayMode)(void);
NAKED void H_SetDisplayMode(void)
{
__asm
{
push ecx
push esi
push dword ptr ds:[refreshRate]
push dword ptr ss:[esp + 18h]
push dword ptr ss:[esp + 18h]
push dword ptr ss:[esp + 18h]
call dword ptr ds:[O_SetDisplayMode]
pop ecx
test eax,eax
jz end
// failed, let system pick whatever works
push esi
push esi
push dword ptr ss:[esp + 14h]
push dword ptr ss:[esp + 14h]
push dword ptr ss:[esp + 14h]
call dword ptr ds:[O_SetDisplayMode]
end:
retn 14h
}
}
/*
**********
* Timing *
**********
*/
BOOL (WINAPI *O_QueryPerformanceFrequency)(LARGE_INTEGER *);
BOOL WINAPI H_QueryPerformanceFrequency(LARGE_INTEGER *lpFrequency)
{
return FALSE;
}
DWORD (WINAPI *kernel32_GetTickCount)(void);
DWORD WINAPI WinMM_timeGetTime(void)
{
return timeGetTime();
}
/*
****************************************************************
* Accurate frame limiter *
* *
* Adapted from http://www.geisswerks.com/ryan/FAQS/timing.html *
* copyright (c)2002+ Ryan M. Geiss *
****************************************************************
*/
LARGE_INTEGER frequency;
double ticks_to_wait;
BOOL useQPC;
int (__fastcall *O_GameFrame)(void *, void *);
int __fastcall H_GameFrame(void *This, void *unused)
{
static LARGE_INTEGER prev_end_of_frame;
LARGE_INTEGER t;
int ret = O_GameFrame(This, unused);
// already limited elsewhere; server running or no window focus
// ideally, we should also detect if we're called to update loading bar
if (*(PDWORD)0x487E18 || !*(PDWORD)0x4841F0) goto end;
for (;;)
{
LARGE_INTEGER ticks_passed;
double ticks_left;
if (useQPC)
QueryPerformanceCounter(&t);
else
t.LowPart = timeGetTime();
// time wrap
if (t.QuadPart - prev_end_of_frame.QuadPart < 0)
break;
ticks_passed.QuadPart = t.QuadPart - prev_end_of_frame.QuadPart;
if (ticks_passed.QuadPart >= ticks_to_wait)
break;
ticks_left = ticks_to_wait - ticks_passed.QuadPart;
// If > 0.002s left, do Sleep(1), which will actually sleep some
// steady amount, probably 1-2 ms,
// and do so in a nice way (CPU meter drops; laptop battery spared).
if (ticks_left > frequency.QuadPart * 2 / 1000)
Sleep(1);
}
prev_end_of_frame.QuadPart = t.QuadPart;
end:
return ret;
}
/*
****************************************************