/*

Miranda NG: the free IM client for Microsoft* Windows*

Copyright (c) 2012-14 Miranda NG project (http://miranda-ng.org),
Copyright (c) 2000-12 Miranda IM project,
all portions of this codebase are copyrighted to the people
listed in contributors.txt.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#include "commonheaders.h"
#include <io.h>
#include "file.h"

#define HM_RECVEVENT    (WM_USER+10)

static int CheckVirusScanned(HWND hwnd, struct FileDlgData *dat, int i)
{
	if (dat->send) return 1;
	if (dat->fileVirusScanned == NULL) return 0;
	if (dat->fileVirusScanned[i]) return 1;
	if (db_get_b(NULL, "SRFile", "WarnBeforeOpening", 1) == 0) return 1;
	return IDYES == MessageBox(hwnd, TranslateT("This file has not yet been scanned for viruses. Are you certain you want to open it?"), TranslateT("File received"), MB_YESNO|MB_DEFBUTTON2);
}

#define M_VIRUSSCANDONE  (WM_USER+100)
struct virusscanthreadstartinfo {
	TCHAR *szFile;
	int returnCode;
	HWND hwndReply;
};

TCHAR* PFTS_StringToTchar(int flags, const PROTOCHAR* s)
{
	if (flags & PFTS_UTF)
		return Utf8DecodeW((char*)s);
	else if (flags & PFTS_UNICODE)
		return mir_tstrdup(s);
	else
		return mir_a2t((char*)s);
}

int PFTS_CompareWithTchar(PROTOFILETRANSFERSTATUS* ft, const PROTOCHAR* s, TCHAR *r)
{
	if (ft->flags & PFTS_UTF) {
		TCHAR *ts = Utf8DecodeW((char*)s);
		int res = _tcscmp(ts, r);
		mir_free(ts);
		return res;
	}
	else if (ft->flags & PFTS_UNICODE)
		return _tcscmp(s, r);
	else {
	  TCHAR *ts = mir_a2t((char*)s);
	  int res = _tcscmp(ts, r);
	  mir_free(ts);
	  return res;
	}
}

static void SetOpenFileButtonStyle(HWND hwndButton, int enabled)
{
	EnableWindow(hwndButton, enabled);
}

void FillSendData(FileDlgData* dat, DBEVENTINFO& dbei)
{
	dbei.cbSize = sizeof(dbei);
	dbei.szModule = GetContactProto(dat->hContact);
	dbei.eventType = EVENTTYPE_FILE;
	dbei.flags = DBEF_SENT;
	dbei.timestamp = time(NULL);
	char *szFileNames = Utf8EncodeT(dat->szFilenames), *szMsg = Utf8EncodeT(dat->szMsg);
	dbei.flags |= DBEF_UTF;

	dbei.cbBlob = sizeof(DWORD) + lstrlenA(szFileNames)+lstrlenA(szMsg)+2;
	dbei.pBlob = (PBYTE)mir_alloc(dbei.cbBlob);
	*(PDWORD)dbei.pBlob = 0;
	lstrcpyA((char*)dbei.pBlob+sizeof(DWORD), szFileNames);
	lstrcpyA((char*)dbei.pBlob+sizeof(DWORD)+lstrlenA(szFileNames)+1, szMsg);

	mir_free(szFileNames), mir_free(szMsg);

}

static void __cdecl RunVirusScannerThread(struct virusscanthreadstartinfo *info)
{
	PROCESS_INFORMATION pi;
	DBVARIANT dbv;

	if ( !db_get_ts(NULL, "SRFile", "ScanCmdLine", &dbv))
	{
		if (dbv.ptszVal[0])
		{
			STARTUPINFO si = {0};
			si.cb = sizeof(si);
			TCHAR *pszReplace = _tcsstr(dbv.ptszVal, _T("%f"));
			TCHAR szCmdLine[768];
			if (pszReplace)
			{
				if (info->szFile[_tcslen(info->szFile) - 1] == '\\')
					info->szFile[_tcslen(info->szFile) - 1] = '\0';
				*pszReplace = 0;
				mir_sntprintf(szCmdLine, SIZEOF(szCmdLine), _T("%s\"%s\"%s"), dbv.ptszVal, info->szFile, pszReplace+2);
			}
			else lstrcpyn(szCmdLine, dbv.ptszVal, SIZEOF(szCmdLine));
			if (CreateProcess(NULL, szCmdLine, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi)) {
				if (WaitForSingleObject(pi.hProcess, 3600*1000) == WAIT_OBJECT_0)
					PostMessage(info->hwndReply, M_VIRUSSCANDONE, info->returnCode, 0);
				CloseHandle(pi.hProcess);
				CloseHandle(pi.hThread);
			}
		}
		db_free(&dbv);
	}
	mir_free(info->szFile);
	mir_free(info);
}

static void SetFilenameControls(HWND hwndDlg, struct FileDlgData *dat, PROTOFILETRANSFERSTATUS *fts)
{
	TCHAR msg[MAX_PATH];
	TCHAR *fnbuf = NULL, *fn = NULL;
	SHFILEINFO shfi = {0};

	if (fts->tszCurrentFile) {
		fnbuf = mir_tstrdup(fts->tszCurrentFile);
		if ((fn = _tcsrchr(fnbuf, '\\')) == NULL)
			fn = fnbuf;
		else fn++;
	}

	if (dat->hIcon) DestroyIcon(dat->hIcon); dat->hIcon = NULL;

	if (fn && (fts->totalFiles > 1)) {
		mir_sntprintf(msg, SIZEOF(msg), _T("%s: %s (%d %s %d)"),
			pcli->pfnGetContactDisplayName(fts->hContact, 0),
			fn, fts->currentFileNumber+1, TranslateT("of"), fts->totalFiles);

		SHGetFileInfo(fn, FILE_ATTRIBUTE_DIRECTORY, &shfi, sizeof(shfi), SHGFI_USEFILEATTRIBUTES|SHGFI_ICON|SHGFI_SMALLICON);
		dat->hIcon = shfi.hIcon;
	}
	else if (fn) {
		mir_sntprintf(msg, SIZEOF(msg), _T("%s: %s"), pcli->pfnGetContactDisplayName(fts->hContact, 0), fn);

		SHGetFileInfo(fn, FILE_ATTRIBUTE_NORMAL, &shfi, sizeof(shfi), SHGFI_USEFILEATTRIBUTES|SHGFI_ICON|SHGFI_SMALLICON);
		dat->hIcon = shfi.hIcon;
	}
	else {
		lstrcpyn(msg, pcli->pfnGetContactDisplayName(fts->hContact, 0), SIZEOF(msg));
		HICON hIcon = LoadSkinIcon(SKINICON_OTHER_DOWNARROW);
		dat->hIcon = CopyIcon(hIcon);
		IcoLib_ReleaseIcon(hIcon, NULL);
	}

	mir_free(fnbuf);

	SendDlgItemMessage(hwndDlg, IDC_FILEICON, STM_SETIMAGE, IMAGE_ICON, (LPARAM)dat->hIcon);
	SetDlgItemText(hwndDlg, IDC_CONTACTNAME, msg);
}

enum { FTS_TEXT, FTS_PROGRESS, FTS_OPEN };
static void SetFtStatus(HWND hwndDlg, TCHAR *text, int mode)
{
	SetDlgItemText(hwndDlg, IDC_STATUS, TranslateTS(text));
	SetDlgItemText(hwndDlg, IDC_TRANSFERCOMPLETED, TranslateTS(text));

	ShowWindow(GetDlgItem(hwndDlg, IDC_STATUS), (mode == FTS_TEXT)?SW_SHOW:SW_HIDE);
	ShowWindow(GetDlgItem(hwndDlg, IDC_ALLFILESPROGRESS), (mode == FTS_PROGRESS)?SW_SHOW:SW_HIDE);
	ShowWindow(GetDlgItem(hwndDlg, IDC_TRANSFERCOMPLETED), (mode == FTS_OPEN)?SW_SHOW:SW_HIDE);
	ShowWindow(GetDlgItem(hwndDlg, IDC_FILEICON), (mode == FTS_OPEN)?SW_SHOW:SW_HIDE);
}

static void HideProgressControls(HWND hwndDlg)
{
	RECT rc;
	char buf[64];

	GetWindowRect(GetDlgItem(hwndDlg, IDC_ALLPRECENTS), &rc);
	MapWindowPoints(NULL, hwndDlg, (LPPOINT)&rc, 2);
	SetWindowPos(hwndDlg, NULL, 0, 0, 100, rc.bottom+3, SWP_NOMOVE|SWP_NOZORDER);
	ShowWindow(GetDlgItem(hwndDlg, IDC_ALLTRANSFERRED), SW_HIDE);
	ShowWindow(GetDlgItem(hwndDlg, IDC_ALLSPEED), SW_HIDE);

	_strtime(buf);
	SetDlgItemTextA(hwndDlg, IDC_ALLPRECENTS, buf);

	PostMessage(GetParent(hwndDlg), WM_FT_RESIZE, 0, (LPARAM)hwndDlg);
}

static int FileTransferDlgResizer(HWND, LPARAM, UTILRESIZECONTROL *urc)
{
	switch(urc->wId) {
		case IDC_CONTACTNAME:
		case IDC_STATUS:
		case IDC_ALLFILESPROGRESS:
		case IDC_TRANSFERCOMPLETED:
			return RD_ANCHORX_WIDTH|RD_ANCHORY_TOP;
		case IDC_FRAME:
			return RD_ANCHORX_WIDTH|RD_ANCHORY_BOTTOM;
		case IDC_ALLPRECENTS:
		case IDCANCEL:
		case IDC_OPENFILE:
		case IDC_OPENFOLDER:
			return RD_ANCHORX_RIGHT|RD_ANCHORY_TOP;

		case IDC_ALLTRANSFERRED:
			urc->rcItem.right = urc->rcItem.left + (urc->rcItem.right - urc->rcItem.left - urc->dlgOriginalSize.cx + urc->dlgNewSize.cx) / 3;
			return RD_ANCHORX_CUSTOM|RD_ANCHORY_CUSTOM;

		case IDC_ALLSPEED:
			urc->rcItem.right = urc->rcItem.right - urc->dlgOriginalSize.cx + urc->dlgNewSize.cx;
			urc->rcItem.left = urc->rcItem.left + (urc->rcItem.right - urc->rcItem.left) / 3;
			return RD_ANCHORX_CUSTOM|RD_ANCHORY_CUSTOM;
	}
	return RD_ANCHORX_LEFT|RD_ANCHORY_TOP;
}

INT_PTR CALLBACK DlgProcFileTransfer(HWND hwndDlg, UINT msg, WPARAM wParam, LPARAM lParam)
{
	FileDlgData *dat = (FileDlgData*)GetWindowLongPtr(hwndDlg, GWLP_USERDATA);

	switch (msg)
	{
		case WM_INITDIALOG:
			TranslateDialogDefault(hwndDlg);
			dat = (FileDlgData*)lParam;
			SetWindowLongPtr(hwndDlg, GWLP_USERDATA, (LONG_PTR)dat);
			dat->hNotifyEvent = HookEventMessage(ME_PROTO_ACK, hwndDlg, HM_RECVEVENT);
			dat->transferStatus.currentFileNumber = -1;
			if (dat->send) {
				dat->fs = (HANDLE)CallContactService(dat->hContact, PSS_FILET, (WPARAM)dat->szMsg, (LPARAM)dat->files);
				SetFtStatus(hwndDlg, LPGENT("Request sent, waiting for acceptance..."), FTS_TEXT);
				SetOpenFileButtonStyle(GetDlgItem(hwndDlg, IDC_OPENFILE), 1);
				dat->waitingForAcceptance = 1;
				// hide "open" button since it may cause potential access violations...
				ShowWindow(GetDlgItem(hwndDlg, IDC_OPENFILE), SW_HIDE);
				ShowWindow(GetDlgItem(hwndDlg, IDC_OPENFOLDER), SW_HIDE);
			}
			else {	//recv
				CreateDirectoryTreeT(dat->szSavePath);
				dat->fs = (HANDLE)CallContactService(dat->hContact, PSS_FILEALLOWT, (WPARAM)dat->fs, (LPARAM)dat->szSavePath);
				dat->transferStatus.tszWorkingDir = mir_tstrdup(dat->szSavePath);
				if (db_get_b(dat->hContact, "CList", "NotOnList", 0)) dat->resumeBehaviour = FILERESUME_ASK;
				else dat->resumeBehaviour = db_get_b(NULL, "SRFile", "IfExists", FILERESUME_ASK);
				SetFtStatus(hwndDlg, LPGENT("Waiting for connection..."), FTS_TEXT);
			}
			{
				/* check we actually got an fs handle back from the protocol */
				if ( !dat->fs) {
					SetFtStatus(hwndDlg, LPGENT("Unable to initiate transfer."), FTS_TEXT);
					dat->waitingForAcceptance = 0;
				}
			}
			{
				LOGFONT lf;
				HFONT hFont = (HFONT)SendDlgItemMessage(hwndDlg, IDC_CONTACTNAME, WM_GETFONT, 0, 0);
				GetObject(hFont, sizeof(lf), &lf);
				lf.lfWeight = FW_BOLD;
				hFont = CreateFontIndirect(&lf);
				SendDlgItemMessage(hwndDlg, IDC_CONTACTNAME, WM_SETFONT, (WPARAM)hFont, 0);
			}

			{
				SHFILEINFO shfi = {0};
				SHGetFileInfo(_T(""), FILE_ATTRIBUTE_DIRECTORY, &shfi, sizeof(shfi), SHGFI_USEFILEATTRIBUTES|SHGFI_ICON|SHGFI_SMALLICON);
				dat->hIconFolder = shfi.hIcon;
			}

			dat->hIcon = NULL;
			{
				char *szProto=GetContactProto(dat->hContact);
				WORD status = db_get_w(dat->hContact,szProto,"Status",ID_STATUS_ONLINE);
				SendDlgItemMessage(hwndDlg, IDC_CONTACT, BM_SETIMAGE, IMAGE_ICON,(LPARAM)LoadSkinnedProtoIcon(szProto, status));
			}

			SendDlgItemMessage(hwndDlg, IDC_CONTACT, BUTTONADDTOOLTIP, (WPARAM)LPGEN("Contact menu"), 0);
			SendDlgItemMessage(hwndDlg, IDC_CONTACT, BUTTONSETASFLATBTN, TRUE, 0);

			Button_SetIcon_IcoLib(hwndDlg, IDC_OPENFILE, SKINICON_OTHER_DOWNARROW, LPGEN("Open..."));
			SendDlgItemMessage(hwndDlg, IDC_OPENFILE, BUTTONSETASPUSHBTN, TRUE, 0);

			SendDlgItemMessage(hwndDlg, IDC_OPENFOLDER, BM_SETIMAGE, IMAGE_ICON, (LPARAM)dat->hIconFolder);
			SendDlgItemMessage(hwndDlg, IDC_OPENFOLDER, BUTTONADDTOOLTIP, (WPARAM)LPGEN("Open folder"), 0);
			SendDlgItemMessage(hwndDlg, IDC_OPENFOLDER, BUTTONSETASFLATBTN, TRUE, 0);

			Button_SetIcon_IcoLib(hwndDlg, IDCANCEL, SKINICON_OTHER_DELETE, LPGEN("Cancel"));

			SetDlgItemText(hwndDlg, IDC_CONTACTNAME, pcli->pfnGetContactDisplayName(dat->hContact, 0));

			if ( !dat->waitingForAcceptance) SetTimer(hwndDlg, 1, 1000, NULL);
			return TRUE;
		case WM_TIMER:
			MoveMemory(dat->bytesRecvedHistory+1, dat->bytesRecvedHistory, sizeof(dat->bytesRecvedHistory)-sizeof(dat->bytesRecvedHistory[0]));
			dat->bytesRecvedHistory[0] = dat->transferStatus.totalProgress;
			if (dat->bytesRecvedHistorySize < SIZEOF(dat->bytesRecvedHistory))
				dat->bytesRecvedHistorySize++;

			{
				TCHAR szSpeed[32], szTime[32], szDisplay[96];
				SYSTEMTIME st;
				ULARGE_INTEGER li;
				FILETIME ft;

				GetSensiblyFormattedSize((dat->bytesRecvedHistory[0]-dat->bytesRecvedHistory[dat->bytesRecvedHistorySize-1])/dat->bytesRecvedHistorySize, szSpeed, SIZEOF(szSpeed), 0, 1, NULL);
				if (dat->bytesRecvedHistory[0] == dat->bytesRecvedHistory[dat->bytesRecvedHistorySize-1])
					lstrcpy(szTime, _T("??:??:??"));
				else {
					li.QuadPart = BIGI(10000000)*(dat->transferStatus.currentFileSize-dat->transferStatus.currentFileProgress)*dat->bytesRecvedHistorySize/(dat->bytesRecvedHistory[0]-dat->bytesRecvedHistory[dat->bytesRecvedHistorySize-1]);
					ft.dwHighDateTime = li.HighPart; ft.dwLowDateTime = li.LowPart;
					FileTimeToSystemTime(&ft, &st);
					GetTimeFormat(LOCALE_USER_DEFAULT, TIME_FORCE24HOURFORMAT|TIME_NOTIMEMARKER, &st, NULL, szTime, SIZEOF(szTime));
				}
				if (dat->bytesRecvedHistory[0] != dat->bytesRecvedHistory[dat->bytesRecvedHistorySize-1]) {
					li.QuadPart = BIGI(10000000)*(dat->transferStatus.totalBytes-dat->transferStatus.totalProgress)*dat->bytesRecvedHistorySize/(dat->bytesRecvedHistory[0]-dat->bytesRecvedHistory[dat->bytesRecvedHistorySize-1]);
					ft.dwHighDateTime = li.HighPart; ft.dwLowDateTime = li.LowPart;
					FileTimeToSystemTime(&ft, &st);
					GetTimeFormat(LOCALE_USER_DEFAULT, TIME_FORCE24HOURFORMAT|TIME_NOTIMEMARKER, &st, NULL, szTime, SIZEOF(szTime));
				}

				mir_sntprintf(szDisplay, SIZEOF(szDisplay), _T("%s/%s  (%s %s)"), szSpeed, TranslateT("sec"), szTime, TranslateT("remaining"));
				SetDlgItemText(hwndDlg, IDC_ALLSPEED, szDisplay);
			}
			break;

		case WM_MEASUREITEM:
			return CallService(MS_CLIST_MENUMEASUREITEM, wParam, lParam);

		case WM_DRAWITEM:
			return CallService(MS_CLIST_MENUDRAWITEM, wParam, lParam);

		case WM_FT_CLEANUP:
			if ( !dat->fs)
			{
				PostMessage(GetParent(hwndDlg), WM_FT_REMOVE, 0, (LPARAM)hwndDlg);
				DestroyWindow(hwndDlg);
			}
			break;

		case WM_COMMAND:
			if (CallService(MS_CLIST_MENUPROCESSCOMMAND, MAKEWPARAM(LOWORD(wParam), MPCF_CONTACTMENU), (LPARAM)dat->hContact))
				break;

			switch (LOWORD(wParam))
			{
				case IDOK:
				case IDCANCEL:
					PostMessage(GetParent(hwndDlg), WM_FT_REMOVE, 0, (LPARAM)hwndDlg);
					DestroyWindow(hwndDlg);
					break;

				case IDC_CONTACT:
					{	RECT rc;
						HMENU hMenu = (HMENU)CallService(MS_CLIST_MENUBUILDCONTACT, (WPARAM)dat->hContact, 0);
						GetWindowRect((HWND)lParam, &rc);
						TrackPopupMenu(hMenu, 0, rc.left, rc.bottom, 0, hwndDlg, NULL);
						DestroyMenu(hMenu);
						break;
					}

				case IDC_TRANSFERCOMPLETED:
					if (dat->transferStatus.currentFileNumber <= 1 && CheckVirusScanned(hwndDlg, dat, 0))
					{
						ShellExecute(NULL, NULL, dat->files[0], NULL, NULL, SW_SHOW);
						break;
					}

				case IDC_OPENFOLDER:
					if (dat)
					{
						TCHAR *path = dat->transferStatus.tszWorkingDir;
						if ( !path || !path[0])
						{
							path = NEWTSTR_ALLOCA(dat->transferStatus.tszCurrentFile);
							TCHAR *p = _tcsrchr(path, '\\'); if (p) *p = 0;
						}

						if (path) ShellExecute(NULL, _T("open"), path, NULL, NULL, SW_SHOW);
					}
					break;

				case IDC_OPENFILE:
				{
					TCHAR **files;
					HMENU hMenu;
					RECT rc;
					int ret;

					if (dat->send)
						if (dat->files == NULL)
							files = dat->transferStatus.ptszFiles;
						else
							files = dat->files;
					else
						files = dat->files;

					hMenu = CreatePopupMenu();
					AppendMenu(hMenu, MF_STRING, 1, TranslateT("Open folder"));
					AppendMenu(hMenu, MF_SEPARATOR, 0, 0);

					if (files && *files)
					{
						int i, limit;
						TCHAR *pszFilename, *pszNewFileName;

						if (dat->send)
							limit = dat->transferStatus.totalFiles;
						else
							limit = dat->transferStatus.currentFileNumber;

						// Loop over all transfered files and add them to the menu
						for (i=0; i < limit; i++) {
							pszFilename = _tcsrchr(files[i], '\\');
							if (pszFilename == NULL)
								pszFilename = files[i];
							else
								pszFilename++;
							{
								if (pszFilename) {
									size_t cbFileNameLen = _tcslen(pszFilename);

									pszNewFileName = (TCHAR*)mir_alloc(cbFileNameLen*2*sizeof(TCHAR));
									TCHAR *p = pszNewFileName;
									for (size_t pszlen = 0; pszlen < cbFileNameLen; pszlen++) {
										*p++=pszFilename[pszlen];
										if (pszFilename[pszlen] == '&')
											*p++='&';
									}
									*p = '\0';
									AppendMenu(hMenu, MF_STRING, i+10, pszNewFileName);
									mir_free(pszNewFileName);
								}
							}
						}
					}

					GetWindowRect((HWND)lParam, &rc);
					CheckDlgButton(hwndDlg, IDC_OPENFILE, BST_CHECKED);
					ret = TrackPopupMenu(hMenu, TPM_RETURNCMD|TPM_RIGHTALIGN, rc.right, rc.bottom, 0, hwndDlg, NULL);
					CheckDlgButton(hwndDlg, IDC_OPENFILE, BST_UNCHECKED);
					DestroyMenu(hMenu);

					if (ret == 1)
					{
						TCHAR *path = dat->transferStatus.tszWorkingDir;
						if ( !path || !path[0])
						{
							path = NEWTSTR_ALLOCA(dat->transferStatus.tszCurrentFile);
							TCHAR *p = _tcsrchr(path, '\\'); if (p) *p = 0;
						}

						if (path) ShellExecute(NULL, _T("open"), path, NULL, NULL, SW_SHOW);
					}
					else if (ret && CheckVirusScanned(hwndDlg, dat, ret))
						ShellExecute(NULL, NULL, files[ret-10], NULL, NULL, SW_SHOW);

					break;
				}
			}
			break;
		case M_FILEEXISTSDLGREPLY:
		{	PROTOFILERESUME *pfr = (PROTOFILERESUME*)lParam;
			TCHAR *szOriginalFilename = (TCHAR*)wParam;
			char *szProto = GetContactProto(dat->hContact);

			EnableWindow(hwndDlg, TRUE);
			switch(pfr->action) {
				case FILERESUME_CANCEL:
					if (dat->fs) CallContactService(dat->hContact, PSS_FILECANCEL, (WPARAM)dat->fs, 0);
					dat->fs = NULL;
					mir_free(szOriginalFilename);
					if (pfr->szFilename) mir_free((char*)pfr->szFilename);
					mir_free(pfr);
					return 0;
				case FILERESUME_RESUMEALL:
				case FILERESUME_OVERWRITEALL:
					dat->resumeBehaviour = pfr->action;
					pfr->action&=~FILERESUMEF_ALL;
					break;
				case FILERESUME_RENAMEALL:
					pfr->action = FILERESUME_RENAME;
					{	TCHAR *pszExtension, *pszFilename;
						int i;
						if ((pszFilename = _tcsrchr(szOriginalFilename, '\\')) == NULL) pszFilename = szOriginalFilename;
						if ((pszExtension = _tcsrchr(pszFilename+1, '.')) == NULL) pszExtension = pszFilename+lstrlen(pszFilename);
						if (pfr->szFilename) mir_free((TCHAR*)pfr->szFilename);
						size_t size = (pszExtension-szOriginalFilename)+21+lstrlen(pszExtension);
						pfr->szFilename = (TCHAR*)mir_alloc(sizeof(TCHAR)*size);
						for (i = 1;;i++) {
							mir_sntprintf((TCHAR*)pfr->szFilename, size, _T("%.*s (%u)%s"), pszExtension-szOriginalFilename, szOriginalFilename, i, pszExtension);
							if (_taccess(pfr->szFilename, 0) != 0)
								break;
						}
					}
					break;
			}
			mir_free(szOriginalFilename);
			CallProtoService(szProto, PS_FILERESUMET, (WPARAM)dat->fs, (LPARAM)pfr);
			if (pfr->szFilename) mir_free((char*)pfr->szFilename);
			mir_free(pfr);
			break;
		}
		case HM_RECVEVENT:
		{	ACKDATA *ack = (ACKDATA*)lParam;
			if (ack->hProcess != dat->fs) break; /* icq abuses this sometimes */
			if (ack->hContact != dat->hContact) break;
			if (ack->type != ACKTYPE_FILE) break;

			if (dat->waitingForAcceptance) {
				SetTimer(hwndDlg, 1, 1000, NULL);
				dat->waitingForAcceptance = 0;
			}
			switch(ack->result) {
				case ACKRESULT_SENTREQUEST: SetFtStatus(hwndDlg, LPGENT("Decision sent"), FTS_TEXT); break;
				case ACKRESULT_CONNECTING: SetFtStatus(hwndDlg, LPGENT("Connecting..."), FTS_TEXT); break;
				case ACKRESULT_CONNECTPROXY: SetFtStatus(hwndDlg, LPGENT("Connecting to proxy..."), FTS_TEXT); break;
				case ACKRESULT_CONNECTED: SetFtStatus(hwndDlg, LPGENT("Connected"), FTS_TEXT); break;
				case ACKRESULT_LISTENING: SetFtStatus(hwndDlg, LPGENT("Waiting for connection..."), FTS_TEXT); break;
				case ACKRESULT_INITIALISING: SetFtStatus(hwndDlg, LPGENT("Initializing..."), FTS_TEXT); break;
				case ACKRESULT_NEXTFILE:
					SetFtStatus(hwndDlg, LPGENT("Moving to next file..."), FTS_TEXT);
					SetDlgItemTextA(hwndDlg, IDC_FILENAME, "");
					if (dat->transferStatus.currentFileNumber == 1 && dat->transferStatus.totalFiles>1 && !dat->send)
						SetOpenFileButtonStyle(GetDlgItem(hwndDlg, IDC_OPENFILE), 1);
					if (dat->transferStatus.currentFileNumber != -1 && dat->files && !dat->send && db_get_b(NULL, "SRFile", "UseScanner", VIRUSSCAN_DISABLE) == VIRUSSCAN_DURINGDL) {
						if (GetFileAttributes(dat->files[dat->transferStatus.currentFileNumber])&FILE_ATTRIBUTE_DIRECTORY)
							PostMessage(hwndDlg, M_VIRUSSCANDONE, dat->transferStatus.currentFileNumber, 0);
						else {
							virusscanthreadstartinfo *vstsi;
							vstsi = (struct virusscanthreadstartinfo*)mir_alloc(sizeof(struct virusscanthreadstartinfo));
							vstsi->hwndReply = hwndDlg;
							vstsi->szFile = mir_tstrdup(dat->files[dat->transferStatus.currentFileNumber]);
							vstsi->returnCode = dat->transferStatus.currentFileNumber;
							forkthread((void (*)(void*))RunVirusScannerThread, 0, vstsi);
						}
					}
					break;
				case ACKRESULT_FILERESUME:
				{
					UpdateProtoFileTransferStatus(&dat->transferStatus, (PROTOFILETRANSFERSTATUS*)ack->lParam);
					PROTOFILETRANSFERSTATUS *fts = &dat->transferStatus;

					SetFilenameControls(hwndDlg, dat, fts);
					int res = _taccess(fts->tszCurrentFile, 0);
					if (res)
						break;

					SetFtStatus(hwndDlg, LPGENT("File already exists"), FTS_TEXT);
					if (dat->resumeBehaviour == FILERESUME_ASK) {
						TDlgProcFileExistsParam param = { hwndDlg, fts };
						ShowWindow(hwndDlg, SW_SHOWNORMAL);
						CreateDialogParam(hInst, MAKEINTRESOURCE(IDD_FILEEXISTS), hwndDlg, DlgProcFileExists, (LPARAM)&param);
						EnableWindow(hwndDlg, FALSE);
					}
					else {
						PROTOFILERESUME *pfr;
						pfr = (PROTOFILERESUME*)mir_alloc(sizeof(PROTOFILERESUME));
						pfr->action = dat->resumeBehaviour;
						pfr->szFilename = NULL;
						PostMessage(hwndDlg, M_FILEEXISTSDLGREPLY, (WPARAM)mir_tstrdup(fts->tszCurrentFile), (LPARAM)pfr);
					}
					SetWindowLongPtr(hwndDlg, DWLP_MSGRESULT, 1);
					return TRUE;
				}
				case ACKRESULT_DATA:
				{
					PROTOFILETRANSFERSTATUS *fts = (PROTOFILETRANSFERSTATUS*)ack->lParam;
					TCHAR str[64], str2[64], szSizeDone[32], szSizeTotal[32];//, *contactName;
					int units;

					if (dat->fileVirusScanned == NULL)
						dat->fileVirusScanned = (int*)mir_calloc(sizeof(int) * fts->totalFiles);

					// This needs to be here - otherwise we get holes in the files array
					if ( !dat->send) {
						if (dat->files == NULL)
							dat->files = (TCHAR**)mir_calloc((fts->totalFiles + 1) * sizeof(TCHAR*));
						if (fts->currentFileNumber < fts->totalFiles && dat->files[fts->currentFileNumber] == NULL)
							dat->files[fts->currentFileNumber] = PFTS_StringToTchar(fts->flags, fts->tszCurrentFile);
					}

					/* HACK: for 0.3.3, limit updates to around 1.1 ack per second */
					if (fts->totalProgress != fts->totalBytes && GetTickCount() < (dat->dwTicks + 650)) break; // the last update was less than a second ago!
					dat->dwTicks = GetTickCount();

					// Update local transfer status with data from protocol
					UpdateProtoFileTransferStatus(&dat->transferStatus, fts);
					fts = &dat->transferStatus;

					bool firstTime = false;
					if ((GetWindowLongPtr(GetDlgItem(hwndDlg, IDC_ALLFILESPROGRESS), GWL_STYLE) & WS_VISIBLE) == 0)
					{
						SetFtStatus(hwndDlg, (fts->flags & PFTS_SENDING) ? LPGENT("Sending...") : LPGENT("Receiving..."), FTS_PROGRESS);
						SetFilenameControls(hwndDlg, dat, fts);
						firstTime = true;
					}

					const unsigned long lastPos = SendDlgItemMessage(hwndDlg, IDC_ALLFILESPROGRESS, PBM_GETPOS, 0, 0);
					const unsigned long nextPos = fts->totalBytes ? (BIGI(100) * fts->totalProgress / fts->totalBytes) : 0;
					if (lastPos != nextPos || firstTime)
					{
						SendDlgItemMessage(hwndDlg, IDC_ALLFILESPROGRESS, PBM_SETPOS, nextPos, 0);
						mir_sntprintf(str, SIZEOF(str), _T("%u%%"), nextPos);
						SetDlgItemText(hwndDlg, IDC_ALLPRECENTS, str);
					}

					GetSensiblyFormattedSize(fts->totalBytes, szSizeTotal, SIZEOF(szSizeTotal), 0, 1, &units);
					GetSensiblyFormattedSize(fts->totalProgress, szSizeDone, SIZEOF(szSizeDone), units, 0, NULL);
					mir_sntprintf(str, SIZEOF(str), _T("%s/%s"), szSizeDone, szSizeTotal);
					str2[0] = 0;
					GetDlgItemText(hwndDlg, IDC_ALLTRANSFERRED, str2, SIZEOF(str2));
					if (_tcscmp(str, str2)) SetDlgItemText(hwndDlg, IDC_ALLTRANSFERRED, str);
					break;
				}

				case ACKRESULT_SUCCESS:
				case ACKRESULT_FAILED:
				case ACKRESULT_DENIED:
				{

					HideProgressControls(hwndDlg);
					KillTimer(hwndDlg, 1);
					if ( !dat->send)
						SetOpenFileButtonStyle(GetDlgItem(hwndDlg, IDC_OPENFILE), 1);
					SetDlgItemText(hwndDlg, IDCANCEL, TranslateT("Close"));
					if (dat->hNotifyEvent)
						UnhookEvent(dat->hNotifyEvent);
					dat->hNotifyEvent = NULL;

					if (ack->result == ACKRESULT_DENIED)
					{
						dat->fs = NULL; /* protocol will free structure */
						SkinPlaySound("FileDenied");
						SetFtStatus(hwndDlg, LPGENT("File transfer denied"), FTS_TEXT);
					} else if (ack->result == ACKRESULT_FAILED)
					{
						dat->fs = NULL; /* protocol will free structure */
						SkinPlaySound("FileFailed");
						SetFtStatus(hwndDlg, LPGENT("File transfer failed"), FTS_TEXT);
					} else {
						SkinPlaySound("FileDone");
						if (dat->send)
						{
							dat->fs = NULL; /* protocol will free structure */
							SetFtStatus(hwndDlg, LPGENT("Transfer completed."), FTS_TEXT);

							DBEVENTINFO dbei = {0};
							FillSendData(dat, dbei);
							db_event_add(dat->hContact, &dbei);
							if (dbei.pBlob)
								mir_free(dbei.pBlob);
							dat->files = NULL;   //protocol library frees this

						} else {
							SetFtStatus(hwndDlg,
								(dat->transferStatus.totalFiles == 1) ?
								LPGENT("Transfer completed, open file.") :
								LPGENT("Transfer completed, open folder."),
								FTS_OPEN);

							int useScanner = db_get_b(NULL, "SRFile", "UseScanner", VIRUSSCAN_DISABLE);
							if (useScanner != VIRUSSCAN_DISABLE) {
								struct virusscanthreadstartinfo *vstsi;
								vstsi = (struct virusscanthreadstartinfo*)mir_alloc(sizeof(struct virusscanthreadstartinfo));
								vstsi->hwndReply = hwndDlg;
								if (useScanner == VIRUSSCAN_DURINGDL) {
									vstsi->returnCode = dat->transferStatus.currentFileNumber;
									if (GetFileAttributes(dat->files[dat->transferStatus.currentFileNumber])&FILE_ATTRIBUTE_DIRECTORY) {
										PostMessage(hwndDlg, M_VIRUSSCANDONE, vstsi->returnCode, 0);
										mir_free(vstsi);
										vstsi = NULL;
									}
									else vstsi->szFile = mir_tstrdup(dat->files[dat->transferStatus.currentFileNumber]);
								}
								else {
									vstsi->szFile = mir_tstrdup(dat->transferStatus.tszWorkingDir);
									vstsi->returnCode = -1;
								}
								SetFtStatus(hwndDlg, LPGENT("Scanning for viruses..."), FTS_TEXT);
								if (vstsi)
									forkthread((void (*)(void*))RunVirusScannerThread, 0, vstsi);
							}
							else dat->fs = NULL; /* protocol will free structure */

							dat->transferStatus.currentFileNumber = dat->transferStatus.totalFiles;
						} // else dat->send

					} // else ack->result

					PostMessage(GetParent(hwndDlg), WM_FT_COMPLETED, ack->result, (LPARAM)hwndDlg);
					break;
			}
			break;
		} // switch ack->result
		} break; // case HM_RECVEVENT
		case M_VIRUSSCANDONE:
		{	int done = 1, i;
			if ((int)wParam == -1) {
				for (i=0;i<dat->transferStatus.totalFiles;i++) dat->fileVirusScanned[i] = 1;
			}
			else {
				dat->fileVirusScanned[wParam] = 1;
				for (i=0;i<dat->transferStatus.totalFiles;i++) if ( !dat->fileVirusScanned[i]) {done = 0; break;}
			}
			if (done)
			{
				dat->fs = NULL; /* protocol will free structure */
				SetFtStatus(hwndDlg, LPGENT("Transfer and virus scan complete"), FTS_TEXT);
			}
			break;
		}
		case WM_SIZE:
		{
			UTILRESIZEDIALOG urd = {0};
			urd.cbSize = sizeof(urd);
			urd.hwndDlg = hwndDlg;
			urd.hInstance = hInst;
			urd.lpTemplate = MAKEINTRESOURCEA(IDD_FILETRANSFERINFO);
			urd.pfnResizer = FileTransferDlgResizer;
			CallService(MS_UTILS_RESIZEDIALOG, 0, (LPARAM)&urd);

			RedrawWindow(GetDlgItem(hwndDlg, IDC_ALLTRANSFERRED), NULL, NULL, RDW_INVALIDATE|RDW_NOERASE);
			RedrawWindow(GetDlgItem(hwndDlg, IDC_ALLSPEED), NULL, NULL, RDW_INVALIDATE|RDW_NOERASE);
			RedrawWindow(GetDlgItem(hwndDlg, IDC_CONTACTNAME), NULL, NULL, RDW_INVALIDATE|RDW_NOERASE);
			RedrawWindow(GetDlgItem(hwndDlg, IDC_STATUS), NULL, NULL, RDW_INVALIDATE|RDW_NOERASE);
			break;
		}
		case WM_DESTROY:
			KillTimer(hwndDlg, 1);

			HFONT hFont = (HFONT)SendDlgItemMessage(hwndDlg, IDC_CONTACTNAME, WM_GETFONT, 0, 0);
			DeleteObject(hFont);

			Button_FreeIcon_IcoLib(hwndDlg, IDC_CONTACT);
			Button_FreeIcon_IcoLib(hwndDlg, IDC_OPENFILE);
			Button_FreeIcon_IcoLib(hwndDlg, IDCANCEL);

			FreeFileDlgData(dat);
			break;
	}
	return FALSE;
}

void FreeFileDlgData(FileDlgData* dat)
{
	if (dat->fs)
		CallContactService(dat->hContact, PSS_FILECANCEL, (WPARAM)dat->fs, 0);
	dat->fs = NULL;

	if (dat->hPreshutdownEvent) UnhookEvent(dat->hPreshutdownEvent);
	if (dat->hNotifyEvent) UnhookEvent(dat->hNotifyEvent);
	dat->hNotifyEvent = NULL;

	FreeProtoFileTransferStatus(&dat->transferStatus);
	FreeFilesMatrix(&dat->files);

	mir_free(dat->fileVirusScanned);
	if (dat->hIcon) DestroyIcon(dat->hIcon);
	if (dat->hIconFolder) DestroyIcon(dat->hIconFolder);
	mir_free(dat);
}