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#include "main.h"
#include "./httpgrab.h"
static HHOOK g_hook = NULL;
static HWND g_hook_host = NULL;
static HWND g_hook_fwd = NULL;
static DWORD g_hook_flags = 0;
static HWND *g_hook_phwnd =NULL;
static LRESULT CALLBACK TargetWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
static LRESULT CALLBACK LabelWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
static BOOL IsDialog(HWND hwnd)
{
wchar_t szName[256] = {0};
return (GetClassNameW(hwnd, szName, sizeof(szName)/sizeof(wchar_t)) &&
CSTR_EQUAL == CompareStringW(MAKELCID(MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US), SORT_DEFAULT),
NORM_IGNORECASE, szName, -1, L"#32770", -1));
}
static LRESULT CALLBACK HookProc(int code, WPARAM wParam, LPARAM lParam)
{
if (HCBT_CREATEWND == code && IsDialog((HWND)wParam) && ((CBT_CREATEWND*)lParam)->lpcs->hwndParent == g_hook_host)
{
LRESULT result;
result = CallNextHookEx(g_hook, code, wParam, lParam);
UnhookWindowsHookEx(g_hook);
g_hook = NULL;
if (0 == result)
{
((CBT_CREATEWND*)lParam)->lpcs->style &= ~WS_VISIBLE;
WNDPROC oldProc = (WNDPROC)SetWindowLongPtrW((HWND)wParam, GWLP_WNDPROC, (LONG_PTR)TargetWndProc);
if (oldProc)
{
SetPropW((HWND)wParam, L"WNDPROC", oldProc);
if (g_hook_fwd) SetPropW((HWND)wParam, L"FWDHWND", g_hook_fwd);
if (g_hook_flags) SetPropW((HWND)wParam, L"FLAGS", (HANDLE)(INT_PTR)g_hook_flags);
if (g_hook_phwnd) *g_hook_phwnd = (HWND)wParam;
}
}
else if (g_hook_host && IsWindow(g_hook_host)) DestroyWindow(g_hook_host);
g_hook_fwd = NULL;
g_hook_flags = 0;
g_hook_host = NULL;
return result;
}
return CallNextHookEx(g_hook, code, wParam, lParam);
}
HWND BeginGrabHTTPText(HWND hwndFwd, UINT flags, HWND *phwndTarget)
{
g_hook_host = CreateWindowExW(0x08000000/*WS_EX_NOACTIVATE*/ | WS_EX_NOPARENTNOTIFY, L"STATIC", L"", WS_DISABLED | WS_POPUP, -10000, -10000, 0, 0, NULL, NULL, NULL, NULL);
if (!g_hook_host) return NULL;
g_hook = SetWindowsHookEx(WH_CBT, HookProc, NULL, GetCurrentThreadId());
if (!g_hook)
{
if (g_hook_host) DestroyWindow(g_hook_host);
g_hook_host = NULL;
g_hook_fwd = NULL;
g_hook_flags = 0;
g_hook_phwnd = NULL;
}
else
{
g_hook_fwd = hwndFwd;
g_hook_flags = flags;
g_hook_phwnd = phwndTarget;
}
return g_hook_host;
}
void EndGrabHTTPText(HWND hwndHost)
{
if (g_hook_host == hwndHost)
{
if (g_hook) UnhookWindowsHookEx(g_hook);
g_hook = NULL;
g_hook_host = NULL;
g_hook_fwd = NULL;
g_hook_flags = 0;
}
if (IsWindow(hwndHost)) DestroyWindow(hwndHost);
}
static LRESULT CALLBACK TargetWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
WNDPROC fnOldProc = (WNDPROC)GetPropW(hwnd, L"WNDPROC");
switch(uMsg)
{
case WM_INITDIALOG:
{
HWND hwndFwd;
hwndFwd = (HWND)GetPropW(hwnd, L"FWDHWND");
DWORD flags = (DWORD)(INT_PTR)GetPropW(hwnd, L"FLAGS");
RemovePropW(hwnd, L"FLAGS");
RemovePropW(hwnd, L"FWDHWND");
if (hwndFwd)
{
HWND hwndText;
if (HTTPGRAB_USESTATUSTEXT & flags)
{
hwndText = GetDlgItem(hwnd, 1180/*IDC_STATUS*/);
WNDPROC oldProc = (WNDPROC)SetWindowLongPtrW(hwndText, GWLP_WNDPROC, (LONG_PTR)LabelWndProc);
if (oldProc) SetPropW(hwndText, L"WNDPROC", oldProc);
else hwndText = hwnd;
}
else hwndText = hwnd;
SetPropW(hwndText, L"FWDTEXT", hwndFwd);
WCHAR szText[256] = {0};
GetWindowTextW(hwndText, szText, sizeof(szText)/sizeof(wchar_t));
SetWindowTextW(hwndFwd, szText);
}
}
break;
case WM_DESTROY:
{
RemovePropW(hwnd, L"WNDPROC");
RemovePropW(hwnd, L"FWDTEXT");
if (fnOldProc) SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)fnOldProc);
HWND hwndOwner;
hwndOwner = GetWindow(hwnd, GW_OWNER);
if (hwndOwner) DestroyWindow(hwndOwner);
}
break;
case WM_STYLECHANGING:
if (GWL_STYLE & wParam) ((STYLESTRUCT*)lParam)->styleNew &= ~WS_VISIBLE;
return 0;
case WM_STYLECHANGED:
if ((GWL_STYLE & wParam) && (WS_VISIBLE & ((STYLESTRUCT*)lParam)->styleNew))
SetWindowLongPtrW(hwnd, GWL_STYLE, (((STYLESTRUCT*)lParam)->styleNew & ~WS_VISIBLE));
return 0;
case WM_WINDOWPOSCHANGING:
((WINDOWPOS*)lParam)->flags = (((WINDOWPOS*)lParam)->flags & ~(SWP_SHOWWINDOW | SWP_FRAMECHANGED)) | SWP_NOACTIVATE | SWP_NOZORDER;
return 0;
case WM_SETTEXT:
{
HWND hwndFwd = (HWND)GetPropW(hwnd, L"FWDTEXT");
if (hwndFwd)
{
(IsWindowUnicode(hwndFwd)) ? SendMessageW(hwndFwd, WM_SETTEXT, wParam, lParam) :
SendMessageA(hwndFwd, WM_SETTEXT, wParam, lParam);
}
}
break;
}
if (!fnOldProc) return DefWindowProc(hwnd, uMsg, wParam, lParam);
return (IsWindowUnicode(hwnd)) ? CallWindowProcW(fnOldProc, hwnd, uMsg, wParam, lParam) : CallWindowProcA(fnOldProc, hwnd, uMsg, wParam, lParam);
}
static LRESULT CALLBACK LabelWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
WNDPROC fnOldProc = (WNDPROC)GetPropW(hwnd, L"WNDPROC");
switch(uMsg)
{
case WM_SETTEXT:
{
HWND hwndFwd = (HWND)GetPropW(hwnd, L"FWDTEXT");
if (hwndFwd)
{
(IsWindowUnicode(hwndFwd)) ? SendMessageW(hwndFwd, WM_SETTEXT, wParam, lParam) :
SendMessageA(hwndFwd, WM_SETTEXT, wParam, lParam);
}
}
case WM_DESTROY:
RemovePropW(hwnd, L"WNDPROC");
RemovePropW(hwnd, L"FWDTEXT");
if (fnOldProc) SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)fnOldProc);
break;
}
if (!fnOldProc) return DefWindowProc(hwnd, uMsg, wParam, lParam);
return (IsWindowUnicode(hwnd)) ? CallWindowProcW(fnOldProc, hwnd, uMsg, wParam, lParam) : CallWindowProcA(fnOldProc, hwnd, uMsg, wParam, lParam);
}
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