teraterm/teraterm/filesys_log.cpp

/*
 * (C) 2020 TeraTerm Project
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/* TERATERM.EXE, file transfer routines */
#include <stdio.h>
#include <io.h>
#include <process.h>
#include <windows.h>
#include <htmlhelp.h>
#include <assert.h>

#include "teraterm.h"
#include "tttypes.h"
#include "ttftypes.h"
#include "ftdlg.h"
#include "ttwinman.h"
#include "commlib.h"
#include "ttcommon.h"
#include "ttlib.h"
#include "dlglib.h"
#include "vtterm.h"
#include "ftlib.h"
#include "buffer.h"
#include "helpid.h"
#include "layer_for_unicode.h"
#include "layer_for_unicode_crt.h"
#include "codeconv.h"

#include "filesys_log_res.h"
#include "filesys.h"

typedef struct {
  HWND HMainWin;
  HWND HWin;
  WORD OpId;
  char DlgCaption[40];

  char FullName[MAX_PATH];
  int DirLen;

  int NumFname, FNCount;
  HANDLE FnStrMemHandle;
  PCHAR FnStrMem;
  int FnPtr;

  BOOL FileOpen;
  HANDLE FileHandle;
  LONG FileSize, ByteCount;
  BOOL OverWrite;

  BOOL LogFlag;
  HANDLE LogFile;
  WORD LogState;
  WORD LogCount;

  BOOL Success;
  BOOL NoMsg;

  char LogDefaultPath[MAX_PATH];
  BOOL HideDialog;

  BYTE LogLineBuf[16];
  int FlushLogLineBuf;

  int ProgStat;

  DWORD StartTime;

  // log rotate
  int RotateMode;  //  enum rotate_mode RotateMode;
  LONG RotateSize;
  int RotateStep;

  HANDLE LogThread;
  DWORD LogThreadId;

  DWORD FileMtime;
  HANDLE LogThreadEvent;
} TFileVar_;
typedef TFileVar_ *PFileVar_;

#define PFileVar PFileVar_
#define TFileVar TFileVar_

static PFileVar LogVar = NULL;

BOOL FileLog = FALSE;
BOOL BinLog = FALSE;

/*
   Line Head flag for timestamping
   2007.05.24 Gentaro
*/
enum enumLineEnd {
        Line_Other = 0,
        Line_LineHead = 1,
        Line_FileHead = 2,
};

static enum enumLineEnd eLineEnd = Line_LineHead;


// �x�����������p�X���b�h�����b�Z�[�W
#define WM_DPC_LOGTHREAD_SEND (WM_APP + 1)

static void CloseFileSync(PFileVar ptr);
static void FileTransEnd_(WORD OpId);


static PFileTransDlg FLogDlg = NULL;

static BOOL OpenFTDlg_(PFileVar fv)
{
        PFileTransDlg FTDlg;

        FTDlg = new CFileTransDlg();

        fv->StartTime = 0;
        fv->ProgStat = 0;
        cv.FilePause &= ~fv->OpId;

        if (fv->OpId != OpLog) {
                fv->HideDialog = ts.FTHideDialog;
        }

        if (FTDlg!=NULL)
        {
                CFileTransDlgInfo info;
                info.UILanguageFile = ts.UILanguageFile;
                info.OpId = fv->OpId;
                info.DlgCaption = fv->DlgCaption;
                info.FileName = &fv->FullName[fv->DirLen];
                info.FullName = fv->FullName;
                info.HideDialog = fv->HideDialog;
                info.HMainWin = fv->HMainWin;
                FTDlg->Create(hInst, &info);
                FTDlg->RefreshNum(fv->StartTime, fv->FileSize, fv->ByteCount);
        }

//      if (fv->OpId==OpLog)
                FLogDlg = FTDlg; /* Log */
#if 0
        else
                SendDlg = FTDlg; /* File send */
#endif

        fv->StartTime = GetTickCount();

        return (FTDlg!=NULL);
}

static void ShowFTDlg(WORD OpId)
{
//      if (OpId == OpLog)
        {
                if (FLogDlg != NULL) {
                        FLogDlg->ShowWindow(SW_SHOWNORMAL);
                        SetForegroundWindow(FLogDlg->GetSafeHwnd());
                }
        }
#if 0
        else {
                if (SendDlg != NULL) {
                        SendDlg->ShowWindow(SW_SHOWNORMAL);
                        SetForegroundWindow(SendDlg->GetSafeHwnd());
                }
        }
#endif
}

static BOOL NewFileVar_(PFileVar *fv)
{
        if ((*fv)==NULL)
        {
                *fv = (PFileVar)malloc(sizeof(TFileVar));
                if ((*fv)!=NULL)
                {
                        char FileDirExpanded[MAX_PATH];
                        ExpandEnvironmentStrings(ts.FileDir, FileDirExpanded, sizeof(FileDirExpanded));
                        memset(*fv, 0, sizeof(TFileVar));
                        strncpy_s((*fv)->FullName, sizeof((*fv)->FullName), FileDirExpanded, _TRUNCATE);
                        AppendSlash((*fv)->FullName,sizeof((*fv)->FullName));
                        (*fv)->DirLen = strlen((*fv)->FullName);
                        (*fv)->FileOpen = FALSE;
                        (*fv)->OverWrite = ((ts.FTFlag & FT_RENAME) == 0);
                        (*fv)->HMainWin = HVTWin;
                        (*fv)->Success = FALSE;
                        (*fv)->NoMsg = FALSE;
                        (*fv)->HideDialog = FALSE;
                }
        }

        return ((*fv)!=NULL);
}

static void FreeFileVar_(PFileVar *fv)
{
        if ((*fv)!=NULL)
        {
                CloseFileSync(*fv);
                //if ((*fv)->FileOpen) _lclose((*fv)->FileHandle);
                if ((*fv)->FnStrMemHandle != 0)
                {
                        GlobalUnlock((*fv)->FnStrMemHandle);
                        GlobalFree((*fv)->FnStrMemHandle);
                }
                free(*fv);
                *fv = NULL;
        }
}

/**
 *      �t�@�C�������������u������
 *              &h      �z�X�g�����u�� (2007.5.14)
 *              &p      TCP�|�[�g�������u�� (2009.6.12)
 *              &u      ���O�I���������[�U��
 */
static void ConvertLogname(char *c, int destlen)
{
        char buf[MAXPATHLEN], buf2[MAXPATHLEN], *p = c;
        char tmphost[1024];
        char tmpuser[256+1];
        DWORD len_user = sizeof(tmpuser);

        memset(buf, 0, sizeof(buf));

        while(*p != '\0') {
                if (*p == '&' && *(p+1) != '\0') {
                        switch (*(p+1)) {
                          case 'h':
                                if (cv.Open) {
                                        if (cv.PortType == IdTCPIP) {
                                                // �z�X�g����IPv6�A�h���X�����A�t�@�C�������g�p�����������������������A
                                                // �]�v�����������������B
                                                // (2013.3.9 yutaka)
                                                strncpy_s(tmphost, sizeof(tmphost), ts.HostName, _TRUNCATE);
                                                //strncpy_s(tmphost, sizeof(tmphost), "2001:0db8:bd05:01d2:288a:1fc0:0001:10ee", _TRUNCATE);
                                                replaceInvalidFileNameChar(tmphost, '_');
                                                strncat_s(buf,sizeof(buf), tmphost, _TRUNCATE);
                                        }
                                        else if (cv.PortType == IdSerial) {
                                                strncpy_s(buf2,sizeof(buf2),buf,_TRUNCATE);
                                                _snprintf_s(buf, sizeof(buf), _TRUNCATE, "%sCOM%d", buf2, ts.ComPort);
                                        }
                                }
                                break;
                          case 'p':
                                if (cv.Open) {
                                        if (cv.PortType == IdTCPIP) {
                                                char port[6];
                                                _snprintf_s(port, sizeof(port), _TRUNCATE, "%d", ts.TCPPort);
                                                strncat_s(buf,sizeof(buf),port,_TRUNCATE);
                                        }
                                }
                                break;
                          case 'u':
                                if (GetUserName(tmpuser, &len_user) != 0) {
                                        strncat_s(buf,sizeof(buf),tmpuser,_TRUNCATE);
                                }
                                break;
                          default:
                                strncpy_s(buf2,sizeof(buf2),p,2);
                                strncat_s(buf,sizeof(buf),buf2,_TRUNCATE);
                        }
                        p++;
                }
                else {
                        strncpy_s(buf2,sizeof(buf2),p,1);
                        strncat_s(buf,sizeof(buf),buf2,_TRUNCATE);
                }
                p++;
        }
        strncpy_s(c, destlen, buf, _TRUNCATE);
}

static void FixLogOption(void)
{
        if (ts.LogBinary) {
                ts.LogTypePlainText = false;
                ts.LogTimestamp = false;
        }
}


// �X���b�h���I�����t�@�C�����N���[�Y
static void CloseFileSync(PFileVar ptr)
{
        BOOL ret;

        if (!ptr->FileOpen)
                return;

        if (ptr->LogThread != INVALID_HANDLE_VALUE) {
                // �X���b�h���I������
                ret = PostThreadMessage(ptr->LogThreadId, WM_QUIT, 0, 0);
                if (ret != 0) {
                        // �X���b�h�L���[���G���L���[���������������������������s���B
                        WaitForSingleObject(ptr->LogThread, INFINITE);
                }
                else {
                        //DWORD code = GetLastError();
                }
                CloseHandle(ptr->LogThread);
                ptr->LogThread = INVALID_HANDLE_VALUE;
        }
        CloseHandle(ptr->FileHandle);
}

// �x�����������p�X���b�h
static unsigned _stdcall DeferredLogWriteThread(void *arg)
{
        MSG msg;
        PFileVar fv = (PFileVar)arg;
        PCHAR buf;
        DWORD buflen;
        DWORD wrote;

        PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE);

        // �X���b�h�L���[���������I�������������X���b�h�����������m�����B
        if (fv->LogThreadEvent != NULL) {
                SetEvent(fv->LogThreadEvent);
        }

        while (GetMessage(&msg, NULL, 0, 0) > 0) {
                switch (msg.message) {
                        case WM_DPC_LOGTHREAD_SEND:
                                buf = (PCHAR)msg.wParam;
                                buflen = (DWORD)msg.lParam;
                                WriteFile(LogVar->FileHandle, buf, buflen, &wrote, NULL);
                                free(buf);   // ����������������
                                break;

                        case WM_QUIT:
                                goto end;
                                break;
                }
        }

end:
        _endthreadex(0);
        return (0);
}

/**
 *      �_�C�A���O�����e�� ts ����������
 *
 *      TODO
 *              �_�C�A���O�����������l�������I��������
 *              ����������������������������������������������?
 */
static void SetLogFlags(HWND Dialog)
{
        WORD BinFlag, val;

        GetRB(Dialog, &BinFlag, IDC_FOPTBIN, IDC_FOPTBIN);
        ts.LogBinary = BinFlag;

        GetRB(Dialog, &val, IDC_APPEND, IDC_APPEND);
        ts.Append = val;

        if (!BinFlag) {
                GetRB(Dialog, &val, IDC_PLAINTEXT, IDC_PLAINTEXT);
                ts.LogTypePlainText = val;

                GetRB(Dialog, &val, IDC_TIMESTAMP, IDC_TIMESTAMP);
                ts.LogTimestamp = val;
        }

        GetRB(Dialog, &val, IDC_HIDEDIALOG, IDC_HIDEDIALOG);
        ts.LogHideDialog = val;

        GetRB(Dialog, &val, IDC_ALLBUFF_INFIRST, IDC_ALLBUFF_INFIRST);
        ts.LogAllBuffIncludedInFirst = val;

        ts.LogTimestampType = (GetCurSel(Dialog, IDC_TIMESTAMPTYPE) - 1);
}

/**
 *      ���O�t�@�C���`�F�b�N
 *
 *      @param[in]      filename
 *      @param[out]     exist   TURE/FALSE
 *      @param[out]     bom             0       no BOM (or file not exist)
 *                                              1       UTF-8
 *                                              2       UTF-16LE
 *                                              3       UTF-16BE
 */
static void CheckLogFile(const wchar_t *filename, BOOL *exist, int *bom)
{
        *exist = FALSE;
        *bom = 0;

        // �t�@�C������������?
        DWORD logdir = _GetFileAttributesW(filename);
        if ((logdir != INVALID_FILE_ATTRIBUTES) && ((logdir & FILE_ATTRIBUTE_DIRECTORY) == 0)) {
                // �t�@�C����������
                *exist = TRUE;

                // BOM�L��/�����`�F�b�N
                FILE *fp = __wfopen(filename, L"rb");
                if (fp != NULL) {
                        unsigned char tmp[4];
                        size_t l = fread(tmp, 1, sizeof(tmp), fp);
                        fclose(fp);
                        if (l < 2) {
                                *bom = 0;
                        } else if (l >= 2 && tmp[0] == 0xff && tmp[1] == 0xfe) {
                                // UTF-16LE
                                *bom = 2;
                        } else if (l >= 2 && tmp[0] == 0xfe && tmp[1] == 0xff) {
                                // UTF-16BE
                                *bom = 3;
                        } else if (l >= 3 && tmp[0] == 0xef && tmp[1] == 0xbb && tmp[2] == 0xbf) {
                                // UTF-8
                                *bom = 1;
                        } else {
                                *bom = 0;
                        }
                }
        }
}

typedef struct {
        FLogDlgInfo_t *info;
        // work
        BOOL file_exist;
        int current_bom;
        TTTSet *pts;
} LogDlgWork_t;

static void ArrangeControls(HWND Dialog, LogDlgWork_t *work)
{
        if (work->file_exist) {
                EnableWindow(GetDlgItem(Dialog, IDC_APPEND), TRUE);
                if (work->pts->Append > 0) {
                        CheckRadioButton(Dialog, IDC_NEW_OVERWRITE, IDC_APPEND, IDC_APPEND);
                }
        }
        else {
                // �t�@�C�������� -> �V�K
                EnableWindow(GetDlgItem(Dialog, IDC_APPEND), FALSE);
                CheckRadioButton(Dialog, IDC_NEW_OVERWRITE, IDC_APPEND, IDC_NEW_OVERWRITE);
        }

        if (work->file_exist && IsDlgButtonChecked(Dialog, IDC_APPEND) == BST_CHECKED) {
                // �t�@�C������������ && append
                int bom = work->current_bom;
                if (bom != 0) {
                        // BOM�L��
                        CheckDlgButton(Dialog, IDC_BOM, BST_CHECKED);
                        int cur =
                                bom == 1 ? 0 :
                                bom == 2 ? 1 :
                                bom == 3 ? 2 : 0;
                        SendDlgItemMessage(Dialog, IDC_TEXTCODING_DROPDOWN, CB_SETCURSEL, cur, 0);
                }
                else {
                        // BOM����
                        CheckDlgButton(Dialog, IDC_BOM, BST_UNCHECKED);
                        SendDlgItemMessage(Dialog, IDC_TEXTCODING_DROPDOWN, CB_SETCURSEL, 0, 0);
                }
                if (IsDlgButtonChecked(Dialog, IDC_FOPTTEXT) == BST_CHECKED) {
                        EnableWindow(GetDlgItem(Dialog, IDC_BOM), FALSE);
                        if (bom != 0) {
                                // BOM�L��
                                EnableWindow(GetDlgItem(Dialog, IDC_TEXTCODING_DROPDOWN), FALSE);
                        }
                        else {
                                // BOM����
                                EnableWindow(GetDlgItem(Dialog, IDC_TEXTCODING_DROPDOWN), TRUE);
                        }
                }
        }
        else {
                // �t�@�C�������� ���� append��������(������)
                CheckRadioButton(Dialog, IDC_NEW_OVERWRITE, IDC_APPEND, IDC_NEW_OVERWRITE);
                CheckDlgButton(Dialog, IDC_BOM, BST_CHECKED);
                SendDlgItemMessage(Dialog, IDC_TEXTCODING_DROPDOWN, CB_SETCURSEL, 0, 0);
                if (IsDlgButtonChecked(Dialog, IDC_FOPTTEXT) == BST_CHECKED) {
                        EnableWindow(GetDlgItem(Dialog, IDC_BOM), TRUE);
                }
        }
}

static void CheckLogFile(HWND Dialog, const wchar_t *filename, LogDlgWork_t *work)
{
        BOOL exist;
        int bom;
        CheckLogFile(filename, &exist, &bom);
        work->file_exist = exist;
        work->current_bom = bom;
        ArrangeControls(Dialog, work);
}

static INT_PTR CALLBACK LogFnHook(HWND Dialog, UINT Message, WPARAM wParam, LPARAM lParam)
{
        static const DlgTextInfo TextInfos[] = {
                { 0, "DLG_TABSHEET_TITLE_LOG" },
                { IDC_FOPTBIN, "DLG_FOPT_BINARY" },
                { IDC_APPEND, "DLG_FOPT_APPEND" },
                { IDC_PLAINTEXT, "DLG_FOPT_PLAIN" },
                { IDC_HIDEDIALOG, "DLG_FOPT_HIDEDIALOG" },
                { IDC_ALLBUFF_INFIRST, "DLG_FOPT_ALLBUFFINFIRST" },
                { IDC_TIMESTAMP, "DLG_FOPT_TIMESTAMP" },
        };
        static const I18nTextInfo timestamp_list[] = {
                { "DLG_FOPT_TIMESTAMP_LOCAL", L"Local Time" },
                { "DLG_FOPT_TIMESTAMP_UTC", L"UTC" },
                { "DLG_FOPT_TIMESTAMP_ELAPSED_LOGGING", L"Elapsed Time (Logging)" },
                { "DLG_FOPT_TIMESTAMP_ELAPSED_CONNECTION", L"Elapsed Time (Connection)" },
        };
        LogDlgWork_t *work = (LogDlgWork_t *)GetWindowLongPtr(Dialog, DWLP_USER);

        if (Message ==  RegisterWindowMessage(HELPMSGSTRING)) {
                // �R�����_�C�A���O�������w���v���b�Z�[�W���t��������
                Message = WM_COMMAND;
                wParam = IDHELP;
        }
        switch (Message) {
        case WM_INITDIALOG: {
                work = (LogDlgWork_t *)lParam;
                TTTSet *pts = work->pts;
                const char *UILanguageFile = pts->UILanguageFile;
                SetWindowLongPtr(Dialog, DWLP_USER, (LONG_PTR)work);
                ::DragAcceptFiles(Dialog, TRUE);

                SetDlgTexts(Dialog, TextInfos, _countof(TextInfos), UILanguageFile);
                SetI18nList("Tera Term", Dialog, IDC_TIMESTAMPTYPE, timestamp_list, _countof(timestamp_list),
                                        UILanguageFile, 0);

                SendDlgItemMessage(Dialog, IDC_TEXTCODING_DROPDOWN, CB_ADDSTRING, 0, (LPARAM)"UTF-8");
                SendDlgItemMessage(Dialog, IDC_TEXTCODING_DROPDOWN, CB_ADDSTRING, 0, (LPARAM)"UTF-16LE");
                SendDlgItemMessage(Dialog, IDC_TEXTCODING_DROPDOWN, CB_ADDSTRING, 0, (LPARAM)"UTF-16BE");
                SendDlgItemMessage(Dialog, IDC_TEXTCODING_DROPDOWN, CB_SETCURSEL, 0, 0);

                _SetDlgItemTextW(Dialog, IDC_FOPT_FILENAME_EDIT, work->info->filename);
                work->info->filename = NULL;

                // Binary/Text �`�F�b�N�{�b�N�X
                if (pts->LogBinary) {
                        CheckRadioButton(Dialog, IDC_FOPTBIN, IDC_FOPTTEXT, IDC_FOPTBIN);
                }
                else {
                        CheckRadioButton(Dialog, IDC_FOPTBIN, IDC_FOPTTEXT, IDC_FOPTTEXT);
                }

                // Plain Text �`�F�b�N�{�b�N�X
                if (pts->LogBinary) {
                        // Binary�t���O���L�����������`�F�b�N��������
                        DisableDlgItem(Dialog, IDC_PLAINTEXT, IDC_PLAINTEXT);
                }
                else if (pts->LogTypePlainText) {
                        SetRB(Dialog, 1, IDC_PLAINTEXT, IDC_PLAINTEXT);
                }

                // Hide dialog�`�F�b�N�{�b�N�X (2008.1.30 maya)
                if (pts->LogHideDialog) {
                        SetRB(Dialog, 1, IDC_HIDEDIALOG, IDC_HIDEDIALOG);
                }

                // Include screen buffer�`�F�b�N�{�b�N�X (2013.9.29 yutaka)
                if (pts->LogAllBuffIncludedInFirst) {
                        SetRB(Dialog, 1, IDC_ALLBUFF_INFIRST, IDC_ALLBUFF_INFIRST);
                }

                // timestamp�`�F�b�N�{�b�N�X (2006.7.23 maya)
                if (pts->LogBinary) {
                        // Binary�t���O���L�����������`�F�b�N��������
                        DisableDlgItem(Dialog, IDC_TIMESTAMP, IDC_TIMESTAMP);
                }
                else if (pts->LogTimestamp) {
                        SetRB(Dialog, 1, IDC_TIMESTAMP, IDC_TIMESTAMP);
                }

                // timestamp ����
                int tstype = pts->LogTimestampType == TIMESTAMP_LOCAL ? 0 :
                                pts->LogTimestampType == TIMESTAMP_UTC ? 1 :
                                pts->LogTimestampType == TIMESTAMP_ELAPSED_LOGSTART ? 2 :
                                pts->LogTimestampType == TIMESTAMP_ELAPSED_CONNECTED ? 3 : 0;
                SendDlgItemMessage(Dialog, IDC_TIMESTAMPTYPE, CB_SETCURSEL, tstype, 0);
                if (pts->LogBinary || !pts->LogTimestamp) {
                        DisableDlgItem(Dialog, IDC_TIMESTAMPTYPE, IDC_TIMESTAMPTYPE);
                }

                CenterWindow(Dialog, GetParent(Dialog));

                return TRUE;
        }

        case WM_COMMAND:
                switch (LOWORD(wParam)) {
                case IDOK: {
                        wchar_t filename[MAX_PATH];
                        _GetDlgItemTextW(Dialog, IDC_FOPT_FILENAME_EDIT, filename, _countof(filename));
                        work->info->filename = _wcsdup(filename);
                        work->info->append = IsDlgButtonChecked(Dialog, IDC_APPEND) == BST_CHECKED;
                        work->info->bom = IsDlgButtonChecked(Dialog, IDC_BOM) == BST_CHECKED;
                        work->info->code = (int)SendDlgItemMessageA(Dialog, IDC_TEXTCODING_DROPDOWN, CB_GETCURSEL, 0, 0);
                        SetLogFlags(Dialog);
                        EndDialog(Dialog, IDOK);
                        break;
                }
                case IDCANCEL:
                        EndDialog(Dialog, IDCANCEL);
                        break;
                case IDHELP:
                        OpenHelp(HH_HELP_CONTEXT, HlpFileLog, work->pts->UILanguageFile);
                        break;
                case IDC_FOPT_FILENAME_BUTTON: {
                        /* save current dir */
                        const char *UILanguageFile = work->pts->UILanguageFile;
                        wchar_t curdir[MAXPATHLEN];
                        _GetCurrentDirectoryW(_countof(curdir), curdir);

                        wchar_t fname[MAX_PATH];
                        GetDlgItemTextW(Dialog, IDC_FOPT_FILENAME_EDIT, fname, _countof(fname));

                        wchar_t FNFilter[128*3];
                        get_lang_msgW("FILEDLG_ALL_FILTER", FNFilter, sizeof(FNFilter), L"All(*.*)\\0*.*\\0\\0", UILanguageFile);

                        wchar_t caption[MAX_PATH];
                        wchar_t uimsg[MAX_UIMSG];
#define TitLogW      L"Log"
                        get_lang_msgW("FILEDLG_TRANS_TITLE_LOG", uimsg, _countof(uimsg), TitLogW, UILanguageFile);
                        wcsncpy_s(caption, _countof(caption), L"Tera Term: ", _TRUNCATE);
                        wcsncat_s(caption, _countof(caption), uimsg, _TRUNCATE);

                        OPENFILENAMEW ofn = {};
                        ofn.lStructSize = get_OPENFILENAME_SIZEW();
                        //ofn.Flags = OFN_PATHMUSTEXIST | OFN_OVERWRITEPROMPT;
                        ofn.Flags |= OFN_EXPLORER | OFN_ENABLESIZING;
                        ofn.Flags |= OFN_SHOWHELP;
                        ofn.Flags |= OFN_NOCHANGEDIR;           // ��������������������������������
                        ofn.hwndOwner = Dialog;
                        ofn.lpstrFilter = FNFilter;
                        ofn.nFilterIndex = 1;
                        ofn.lpstrFile = fname;
                        ofn.nMaxFile = _countof(fname);
                        ofn.lpstrTitle = caption;
                        BOOL Ok = GetSaveFileNameW(&ofn);
                        if (Ok) {
                                SetDlgItemTextW(Dialog, IDC_FOPT_FILENAME_EDIT, fname);
                        }

                        /* restore dir */
                        _SetCurrentDirectoryW(curdir);

                        break;
                }
                case IDC_FOPTBIN:
                        EnableWindow(GetDlgItem(Dialog, IDC_TEXTCODING_DROPDOWN), FALSE);
                        EnableWindow(GetDlgItem(Dialog, IDC_BOM), FALSE);
                        DisableDlgItem(Dialog, IDC_PLAINTEXT, IDC_TIMESTAMP);
                        DisableDlgItem(Dialog, IDC_TIMESTAMPTYPE, IDC_TIMESTAMPTYPE);
                        break;
                case IDC_FOPTTEXT:
                        ArrangeControls(Dialog, work);
                        EnableDlgItem(Dialog, IDC_PLAINTEXT, IDC_TIMESTAMP);
                        // FALLTHROUGH -- BinFlag �� off ������ Timestamp �������L��/��������������
                case IDC_TIMESTAMP:
                        if (IsDlgButtonChecked(Dialog, IDC_TIMESTAMP) == BST_CHECKED) {
                                EnableDlgItem(Dialog, IDC_TIMESTAMPTYPE, IDC_TIMESTAMPTYPE);
                        }
                        else {
                                DisableDlgItem(Dialog, IDC_TIMESTAMPTYPE, IDC_TIMESTAMPTYPE);
                        }
                        break;
                case IDC_FOPT_FILENAME_EDIT:
                        if (HIWORD(wParam) == EN_CHANGE){
                                wchar_t filename[MAX_PATH];
                                GetDlgItemTextW(Dialog, IDC_FOPT_FILENAME_EDIT, filename, _countof(filename));
                                CheckLogFile(Dialog, filename, work);
                        }
                        break;
                case IDC_NEW_OVERWRITE:
                        if (IsDlgButtonChecked(Dialog, IDC_FOPTTEXT) == BST_CHECKED) {
                                EnableWindow(GetDlgItem(Dialog, IDC_BOM), TRUE);
                                EnableWindow(GetDlgItem(Dialog, IDC_TEXTCODING_DROPDOWN), TRUE);
                                CheckDlgButton(Dialog, IDC_BOM, BST_CHECKED);
                                SendDlgItemMessage(Dialog, IDC_TEXTCODING_DROPDOWN, CB_SETCURSEL, 0, 0);
                        }
                        break;
                case IDC_APPEND:
                        ArrangeControls(Dialog, work);
                        break;
                }
                break;
        case WM_DROPFILES: {
                // �����h���b�v��������������1������������
                HDROP hDrop = (HDROP)wParam;
                const UINT len = _DragQueryFileW(hDrop, 0, NULL, 0);
                if (len == 0) {
                        DragFinish(hDrop);
                        return TRUE;
                }
                wchar_t *filename = (wchar_t *)malloc(sizeof(wchar_t) * (len + 1));
                _DragQueryFileW(hDrop, 0, filename, len + 1);
                filename[len] = '\0';
                CheckRadioButton(Dialog, IDC_NEW_OVERWRITE, IDC_APPEND, IDC_APPEND);
                _SetDlgItemTextW(Dialog, IDC_FOPT_FILENAME_EDIT, filename);
                SendDlgItemMessage(Dialog, IDC_FOPT_FILENAME_EDIT, EM_SETSEL, len, len);
                free(filename);
                DragFinish(hDrop);
                return TRUE;
        }
        }
        return FALSE;
}

static BOOL LogStart(void)
{
        unsigned tid;

        if ((FileLog) || (BinLog)) return FALSE;

        assert(LogVar != NULL);

        if (strlen(&(LogVar->FullName[LogVar->DirLen]))==0) {
                // �t�@�C����������������������
                return FALSE;
        }

        if (! LoadTTFILE()) return FALSE;

        LogVar->OpId = OpLog;
        //(*SetFileVar)(LogVar);
        {
                int i;
                char c;
                PFileVar fv = LogVar;
                GetFileNamePos(fv->FullName,&(fv->DirLen),&i);
                c = fv->FullName[fv->DirLen];
                if (c=='\\'||c=='/') fv->DirLen++;
                strncpy_s(fv->DlgCaption, sizeof(fv->DlgCaption),"Tera Term: ", _TRUNCATE);
                char uimsg[MAX_UIMSG];
                get_lang_msg("FILEDLG_TRANS_TITLE_LOG", uimsg, sizeof(uimsg), TitLog, ts.UILanguageFile);
                strncat_s(fv->DlgCaption, sizeof(fv->DlgCaption), uimsg, _TRUNCATE);
        }
        FixLogOption();

        if (ts.LogBinary > 0)
        {
                BinLog = TRUE;
                FileLog = FALSE;
                if (! CreateBinBuf())
                {
                        FileTransEnd_(OpLog);
                        return FALSE;
                }
        }
        else {
                BinLog = FALSE;
                FileLog = TRUE;
                if (! CreateLogBuf())
                {
                        FileTransEnd_(OpLog);
                        return FALSE;
                }
        }
        cv.LStart = cv.LogPtr;
        cv.LCount = 0;
        if (ts.LogHideDialog)
                LogVar->HideDialog = 1;

        /* 2007.05.24 Gentaro */
        eLineEnd = Line_LineHead;

        if (ts.Append > 0)
        {
                int dwShareMode = FILE_SHARE_READ;
                if (!ts.LogLockExclusive) {
                        dwShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE;
                }
                LogVar->FileHandle = CreateFile(LogVar->FullName, GENERIC_WRITE, dwShareMode, NULL,
                                                OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
                if (LogVar->FileHandle != INVALID_HANDLE_VALUE){
                        SetFilePointer(LogVar->FileHandle, 0, NULL, FILE_END);
                        /* 2007.05.24 Gentaro
                                If log file already exists,
                                a newline is inserted before the first timestamp.
                        */
                        eLineEnd = Line_FileHead;
                }
        }
        else {
                int dwShareMode = FILE_SHARE_READ;
                if (!ts.LogLockExclusive) {
                        dwShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE;
                }
                LogVar->FileHandle = CreateFile(LogVar->FullName, GENERIC_WRITE, dwShareMode, NULL,
                                                CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
        }
        LogVar->FileOpen = (LogVar->FileHandle != INVALID_HANDLE_VALUE);
        if (! LogVar->FileOpen)
        {
                char msg[128];

                // �t�@�C���I�[�v���G���[�������b�Z�[�W�\�������������B(2008.7.9 yutaka)
                if (LogVar->NoMsg == FALSE) {
                        _snprintf_s(msg, sizeof(msg), _TRUNCATE, "Can not create a `%s' file. (%d)", LogVar->FullName, GetLastError());
                        MessageBox(NULL, msg, "Tera Term: File open error", MB_OK | MB_ICONERROR);
                }

                FileTransEnd_(OpLog);
                return FALSE;
        }
        LogVar->ByteCount = 0;

        // Log rotate configuration
        LogVar->RotateMode = ts.LogRotate;
        LogVar->RotateSize = ts.LogRotateSize;
        LogVar->RotateStep = ts.LogRotateStep;

        // Log rotate���L���������A�����t�@�C���T�C�Y�����������B
        // �������t�@�C�������������T�C�Y�����[�e�[�g�������������C���B
        // (2016.4.9 yutaka)
        if (LogVar->RotateMode != ROTATE_NONE) {
                DWORD size = GetFileSize(LogVar->FileHandle, NULL);
                if (size != -1)
                        LogVar->ByteCount = size;
        }

        if (! OpenFTDlg_(LogVar)) {
                FileTransEnd_(OpLog);
                return FALSE;
        }

        // �x�����������p�X���b�h���N�����B
        // (2013.4.19 yutaka)
        // DeferredLogWriteThread �X���b�h���N�������A�X���b�h�L���[�����������������O���A
        // ���O�t�@�C�����N���[�Y(CloseFileSync)���s���������A�G���L���[�����s���A�f�b�h���b�N
        // �����������������C�������B
        // �X���b�h�����������s�������A���O�����C�x���g�I�u�W�F�N�g���g�����A�X���b�h�L���[��
        // ���������������������������������B���O�t���C�x���g�I�u�W�F�N�g���g���������A
        // �V�X�e��(Windows OS)�������j�[�N�����O�������K�v�������B
        // (2016.9.23 yutaka)
        LogVar->LogThreadEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
        LogVar->LogThread = (HANDLE)_beginthreadex(NULL, 0, DeferredLogWriteThread, LogVar, 0, &tid);
        LogVar->LogThreadId = tid;
        if (LogVar->LogThreadEvent != NULL) {
                WaitForSingleObject(LogVar->LogThreadEvent, INFINITE);
                CloseHandle(LogVar->LogThreadEvent);
        }

        // �����o�b�t�@�������f�[�^�������������o���������A
        // ���O�������J�n�����B
        // (2013.9.29 yutaka)
        if (ts.LogAllBuffIncludedInFirst) {
                DWORD ofs, size, written_size;
                char buf[512];
                const char *crlf = "\r\n";
                DWORD crlf_len = 2;
                for (ofs = 0 ;  ; ofs++ ) {
                        // 1�����s�����������B���������������A�G�X�P�[�v�V�[�P���X�������������B
                        size = BuffGetAnyLineData(ofs, buf, sizeof(buf));
                        if (size == -1)
                                break;

#if 0
                        if (ts.DeferredLogWriteMode) { // �x����������
                                char *pbuf = (char *)malloc(size + 2);
                                memcpy(pbuf, buf, size);
                                pbuf[size] = '\r';
                                pbuf[size+1] = '\n';
                                Sleep(1);  // �X���b�h�L���[�����������������A�R���e�L�X�g�X�C�b�`�������B
                                PostThreadMessage(LogVar->LogThreadId, WM_DPC_LOGTHREAD_SEND, (WPARAM)pbuf, size + 2);
                        } else { // �������B�l�b�g���[�N�o�R�����x���B
#endif
                                WriteFile(LogVar->FileHandle, buf, size, &written_size, NULL);
                                WriteFile(LogVar->FileHandle, crlf, crlf_len, &written_size, NULL);
#if 0
                        }
#endif
                }
        }

        return TRUE;
}

void LogPut1(BYTE b)
{
        cv.LogBuf[cv.LogPtr] = b;
        cv.LogPtr++;
        if (cv.LogPtr>=InBuffSize)
                cv.LogPtr = cv.LogPtr-InBuffSize;

        if (FileLog)
        {
                if (cv.LCount>=InBuffSize)
                {
                        cv.LCount = InBuffSize;
                        cv.LStart = cv.LogPtr;
                }
                else
                        cv.LCount++;
        }
        else
                cv.LCount = 0;
}

static BOOL Get1(PCHAR Buf, int *Start, int *Count, PBYTE b)
{
        if (*Count<=0) return FALSE;
        *b = Buf[*Start];
        (*Start)++;
        if (*Start>=InBuffSize)
                *Start = *Start-InBuffSize;
        (*Count)--;
        return TRUE;
}


static CRITICAL_SECTION g_filelog_lock;   /* ���b�N�p���� */

void logfile_lock_initialize(void)
{
        InitializeCriticalSection(&g_filelog_lock);
}

static inline void logfile_lock(void)
{
        EnterCriticalSection(&g_filelog_lock);
}

static inline void logfile_unlock(void)
{
        LeaveCriticalSection(&g_filelog_lock);
}

 // �R�����g�����O����������
static void CommentLogToFile(char *buf, int size)
{
        DWORD wrote;

        if (LogVar == NULL || !LogVar->FileOpen) {
                char uimsg[MAX_UIMSG];
                get_lang_msg("MSG_ERROR", uimsg, sizeof(uimsg), "ERROR", ts.UILanguageFile);
                get_lang_msg("MSG_COMMENT_LOG_OPEN_ERROR", ts.UIMsg, sizeof(ts.UIMsg),
                             "It is not opened by the log file yet.", ts.UILanguageFile);
                ::MessageBox(NULL, ts.UIMsg, uimsg, MB_OK|MB_ICONEXCLAMATION);
                return;
        }

        logfile_lock();
        WriteFile(LogVar->FileHandle, buf, size, &wrote, NULL);
        WriteFile(LogVar->FileHandle, "\r\n", 2, &wrote, NULL); // ���s
        /* Set Line End Flag
                2007.05.24 Gentaro
        */
        eLineEnd = Line_LineHead;
        logfile_unlock();
}

// ���O�����[�e�[�g�����B
// (2013.3.21 yutaka)
static void LogRotate(void)
{
        int loopmax = 10000;  // XXX
        char filename[1024];
        char newfile[1024], oldfile[1024];
        int i, k;
        int dwShareMode = FILE_SHARE_READ;
        unsigned tid;

        if (! LogVar->FileOpen) return;

        if (LogVar->RotateMode == ROTATE_NONE)
                return;

        if (LogVar->RotateMode == ROTATE_SIZE) {
                if (LogVar->ByteCount <= LogVar->RotateSize)
                        return;
                //OutputDebugPrintf("%s: mode %d size %ld\n", __FUNCTION__, LogVar->RotateMode, LogVar->ByteCount);
        } else {
                return;
        }

        logfile_lock();
        // ���O�T�C�Y���������������B
        LogVar->ByteCount = 0;

        // �������������t�@�C�����N���[�Y�����A�������t�@�C�����I�[�v�������B
        CloseFileSync(LogVar);
        //_lclose(LogVar->FileHandle);

        // �������[�e�[�V�������X�e�b�v�����w����������
        if (LogVar->RotateStep > 0)
                loopmax = LogVar->RotateStep;

        for (i = 1 ; i <= loopmax ; i++) {
                _snprintf_s(filename, sizeof(filename), _TRUNCATE, "%s.%d", LogVar->FullName, i);
                if (_access_s(filename, 0) != 0)
                        break;
        }
        if (i > loopmax) {
                // �������������������������A�������t�@�C�������p�������B
                i = loopmax;
        }

        // ���t�@�C�������l�[���B
        for (k = i-1 ; k >= 0 ; k--) {
                if (k == 0)
                        strncpy_s(oldfile, sizeof(oldfile), LogVar->FullName, _TRUNCATE);
                else
                        _snprintf_s(oldfile, sizeof(oldfile), _TRUNCATE, "%s.%d", LogVar->FullName, k);
                _snprintf_s(newfile, sizeof(newfile), _TRUNCATE, "%s.%d", LogVar->FullName, k+1);
                remove(newfile);
                if (rename(oldfile, newfile) != 0) {
                        OutputDebugPrintf("%s: rename %d\n", __FUNCTION__, errno);
                }
        }

        // ���I�[�v��
        if (!ts.LogLockExclusive) {
                dwShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE;
        }
        LogVar->FileHandle = CreateFile(LogVar->FullName, GENERIC_WRITE, dwShareMode, NULL,
                                        CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);

        // �x�����������p�X���b�h���N�����B
        // (2013.4.19 yutaka)
        // DeferredLogWriteThread �X���b�h���N�������A�X���b�h�L���[�����������������O���A
        // ���O�t�@�C�����N���[�Y(CloseFileSync)���s���������A�G���L���[�����s���A�f�b�h���b�N
        // �����������������C�������B
        // �X���b�h�����������s�������A���O�����C�x���g�I�u�W�F�N�g���g�����A�X���b�h�L���[��
        // ���������������������������������B���O�t���C�x���g�I�u�W�F�N�g���g���������A
        // �V�X�e��(Windows OS)�������j�[�N�����O�������K�v�������B
        // (2016.9.26 yutaka)
        LogVar->LogThreadEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
        LogVar->LogThread = (HANDLE)_beginthreadex(NULL, 0, DeferredLogWriteThread, LogVar, 0, &tid);
        LogVar->LogThreadId = tid;
        if (LogVar->LogThreadEvent != NULL) {
                WaitForSingleObject(LogVar->LogThreadEvent, INFINITE);
                CloseHandle(LogVar->LogThreadEvent);
        }

        logfile_unlock();

}

void LogToFile(void)
{
        PCHAR Buf;
        int Start, Count;
        BYTE b;
        PCHAR WriteBuf;
        DWORD WriteBufMax, WriteBufLen;
        CHAR tmp[128];
        DWORD wrote;

        if (! LogVar->FileOpen) return;
        if (FileLog)
        {
                Buf = cv.LogBuf;
                Start = cv.LStart;
                Count = cv.LCount;
        }
        else if (BinLog)
        {
                Buf = cv.BinBuf;
                Start = cv.BStart;
                Count = cv.BCount;
        }
        else
                return;

        if (Buf==NULL) return;
        if (Count==0) return;

        // ���b�N������(2004.8.6 yutaka)
        logfile_lock();

        if (ts.DeferredLogWriteMode) {
                WriteBufMax = 8192;
                WriteBufLen = 0;
                WriteBuf = (PCHAR)malloc(WriteBufMax);
                while (Get1(Buf,&Start,&Count,&b)) {
                        if (!FLogIsPause() && (! cv.ProtoFlag))
                        {
                                tmp[0] = 0;
                                if ( ts.LogTimestamp && eLineEnd ) {
                                        char *strtime = NULL;

                                        switch (ts.LogTimestampType) {
                                        case TIMESTAMP_LOCAL:
                                                strtime = mctimelocal(ts.LogTimestampFormat, FALSE);
                                                break;
                                        case TIMESTAMP_UTC:
                                                strtime = mctimelocal(ts.LogTimestampFormat, TRUE);
                                                break;
                                        case TIMESTAMP_ELAPSED_LOGSTART:
                                                strtime = strelapsed(LogVar->StartTime);
                                                break;
                                        case TIMESTAMP_ELAPSED_CONNECTED:
                                                strtime = strelapsed(cv.ConnectedTime);
                                                break;
                                        }

                                        /* 2007.05.24 Gentaro */
                                        if( eLineEnd == Line_FileHead ){
                                                strncat_s(tmp, sizeof(tmp), "\r\n", _TRUNCATE);
                                        }
                                        strncat_s(tmp, sizeof(tmp), "[", _TRUNCATE);
                                        strncat_s(tmp, sizeof(tmp), strtime, _TRUNCATE);
                                        strncat_s(tmp, sizeof(tmp), "] ", _TRUNCATE);
                                }

                                /* 2007.05.24 Gentaro */
                                if( b == 0x0a ){
                                        eLineEnd = Line_LineHead; /* set endmark*/
                                }
                                else {
                                        eLineEnd = Line_Other; /* clear endmark*/
                                }

                                if (WriteBufLen >= (WriteBufMax*4/5)) {
                                        WriteBufMax *= 2;
                                        WriteBuf = (PCHAR)realloc(WriteBuf, WriteBufMax);
                                }
                                memcpy(&WriteBuf[WriteBufLen], tmp, strlen(tmp));
                                WriteBufLen += strlen(tmp);
                                WriteBuf[WriteBufLen++] = b;

                                (LogVar->ByteCount)++;
                        }
                }

                PostThreadMessage(LogVar->LogThreadId, WM_DPC_LOGTHREAD_SEND, (WPARAM)WriteBuf, WriteBufLen);

        } else {

                while (Get1(Buf,&Start,&Count,&b))
                {
                        if (!FLogIsPause() && (! cv.ProtoFlag))
                        {
                                if ( ts.LogTimestamp && eLineEnd ) {
                                        char *strtime = NULL;

                                        switch (ts.LogTimestampType) {
                                        case TIMESTAMP_LOCAL:
                                                strtime = mctimelocal(ts.LogTimestampFormat, FALSE);
                                                break;
                                        case TIMESTAMP_UTC:
                                                strtime = mctimelocal(ts.LogTimestampFormat, TRUE);
                                                break;
                                        case TIMESTAMP_ELAPSED_LOGSTART:
                                                strtime = strelapsed(LogVar->StartTime);
                                                break;
                                        case TIMESTAMP_ELAPSED_CONNECTED:
                                                strtime = strelapsed(cv.ConnectedTime);
                                                break;
                                        }
                                        WriteFile(LogVar->FileHandle, "[", 1, &wrote, NULL);
                                        WriteFile(LogVar->FileHandle, strtime, strlen(strtime), &wrote, NULL);
                                        WriteFile(LogVar->FileHandle, "] ", 2, &wrote, NULL);
                                }

                                /* 2007.05.24 Gentaro */
                                if( b == 0x0a ){
                                        eLineEnd = Line_LineHead; /* set endmark*/
                                }
                                else {
                                        eLineEnd = Line_Other; /* clear endmark*/
                                }

                                WriteFile(LogVar->FileHandle, (PCHAR)&b, 1, &wrote, NULL);
                                (LogVar->ByteCount)++;
                        }
                }

        }

        logfile_unlock();

        if (FileLog)
        {
                cv.LStart = Start;
                cv.LCount = Count;
        }
        else {
                cv.BStart = Start;
                cv.BCount = Count;
        }
        if (FLogIsPause() || cv.ProtoFlag) return;
        if (FLogDlg!=NULL)
                //FLogDlg->RefreshNum(LogVar);
                FLogDlg->RefreshNum(LogVar->StartTime, LogVar->FileSize, LogVar->ByteCount);


        // ���O�E���[�e�[�g
        LogRotate();

}

BOOL CreateLogBuf(void)
{
        if (cv.HLogBuf==NULL)
        {
                cv.HLogBuf = GlobalAlloc(GMEM_MOVEABLE,InBuffSize);
                cv.LogBuf = NULL;
                cv.LogPtr = 0;
                cv.LStart = 0;
                cv.LCount = 0;
        }
        return (cv.HLogBuf!=NULL);
}

void FreeLogBuf(void)
{
        if ((cv.HLogBuf==NULL) || FileLog)
                return;
        if (cv.LogBuf!=NULL)
                GlobalUnlock(cv.HLogBuf);
        GlobalFree(cv.HLogBuf);
        cv.HLogBuf = NULL;
        cv.LogBuf = NULL;
        cv.LogPtr = 0;
        cv.LStart = 0;
        cv.LCount = 0;
}

BOOL CreateBinBuf(void)
{
        if (cv.HBinBuf==NULL)
        {
                cv.HBinBuf = GlobalAlloc(GMEM_MOVEABLE,InBuffSize);
                cv.BinBuf = NULL;
                cv.BinPtr = 0;
                cv.BStart = 0;
                cv.BCount = 0;
        }
        return (cv.HBinBuf!=NULL);
}

void FreeBinBuf(void)
{
        if ((cv.HBinBuf==NULL) || BinLog)
                return;
        if (cv.BinBuf!=NULL)
                GlobalUnlock(cv.HBinBuf);
        GlobalFree(cv.HBinBuf);
        cv.HBinBuf = NULL;
        cv.BinBuf = NULL;
        cv.BinPtr = 0;
        cv.BStart = 0;
        cv.BCount = 0;
}

static void FileTransEnd_(WORD OpId)
/* OpId = 0: close Log and FileSend
      OpLog: close Log
 OpSendFile: close FileSend */
{
        if (((OpId==0) || (OpId==OpLog)) && (FileLog || BinLog))
        {
                FileLog = FALSE;
                BinLog = FALSE;
                if (FLogDlg!=NULL)
                {
                        FLogDlg->DestroyWindow();
                        FLogDlg = NULL;
                }
                FreeFileVar_(&LogVar);
                FreeLogBuf();
                FreeBinBuf();
                FreeTTFILE();
        }

#if 0
        if (((OpId==0) || (OpId==OpSendFile)) && FSend)
        {
                FSend = FALSE;
                TalkStatus = IdTalkKeyb;
                if (SendDlg!=NULL)
                {
                        SendDlg->DestroyWindow();
                        SendDlg = NULL;
                }
                FreeFileVar_(&SendVar);
                FreeTTFILE();
        }
#endif

//      EndDdeCmnd(0);
}


/**
 *      ���O���|�[�Y����
 *      ���� FLogChangeButton() ������
 */
void FLogPause(BOOL Pause)
{
        if (FLogDlg!=NULL)
                FLogDlg->ChangeButton(Pause);
        FileTransPause(OpLog, Pause);
}

/**
 *      ���O���[�e�[�g������
 *      ���O���T�C�Y��<size>�o�C�g���������������A���[�e�[�V��������������������
 */
void FLogRotateSize(size_t size)
{
        if (LogVar == NULL) {
                return;
        }
        LogVar->RotateMode = ROTATE_SIZE;
        LogVar->RotateSize = size;
}

/**
 *      ���O���[�e�[�g������
 *      ���O�t�@�C������������������
 */
void FLogRotateRotate(int step)
{
        if (LogVar == NULL) {
                return;
        }
        LogVar->RotateStep = step;
}

/**
 *      ���O���[�e�[�g������
 *      ���[�e�[�V���������~
 */
void FLogRotateHalt(void)
{
        if (LogVar == NULL) {
                return;
        }
        LogVar->RotateMode = ROTATE_NONE;
        LogVar->RotateSize = 0;
        LogVar->RotateStep = 0;
}

static INT_PTR CALLBACK OnCommentDlgProc(HWND hDlgWnd, UINT msg, WPARAM wp, LPARAM lp)
{
        static const DlgTextInfo TextInfos[] = {
                { 0, "DLG_COMMENT_TITLE" },
                { IDOK, "BTN_OK" }
        };
        char buf[256];
        UINT ret;

        switch (msg) {
                case WM_INITDIALOG:
                        //SetDlgItemText(hDlgWnd, IDC_EDIT_COMMENT, "�T���v��");
                        // �G�f�B�b�g�R���g���[�����t�H�[�J�X��������
                        SetFocus(GetDlgItem(hDlgWnd, IDC_EDIT_COMMENT));
                        SetDlgTexts(hDlgWnd, TextInfos, _countof(TextInfos), ts.UILanguageFile);
                        return FALSE;

                case WM_COMMAND:
                        switch (LOWORD(wp)) {
                                case IDOK:
                                        memset(buf, 0, sizeof(buf));
                                        ret = GetDlgItemTextA(hDlgWnd, IDC_EDIT_COMMENT, buf, sizeof(buf) - 1);
                                        if (ret > 0) { // �e�L�X�g��������
                                                //buf[sizeof(buf) - 1] = '\0';  // null-terminate
                                                CommentLogToFile(buf, ret);
                                        }
                                        TTEndDialog(hDlgWnd, IDOK);
                                        break;
                                default:
                                        return FALSE;
                        }
                        break;
                case WM_CLOSE:
                        TTEndDialog(hDlgWnd, 0);
                        return TRUE;

                default:
                        return FALSE;
        }
        return TRUE;
}

void FLogAddCommentDlg(HINSTANCE hInst, HWND hWnd)
{
        // ���O�t�@�C�����R�����g���������� (2004.8.6 yutaka)
        TTDialogBox(hInst, MAKEINTRESOURCE(IDD_COMMENT_DIALOG),
                                HVTWin, OnCommentDlgProc);
}

void FLogClose(void)
{
        if (LogVar != NULL)
                FileTransEnd_(OpLog);
}

BOOL FLogOpen(const char *fname)
{
        BOOL ret;

        if (LogVar != NULL) {
                return FALSE;
        }

        LogVar->DirLen = 0;
        LogVar->NoMsg = TRUE;
        strncpy_s(LogVar->FullName, sizeof(LogVar->FullName), fname, _TRUNCATE);
        ret = LogStart();
        return ret;
}

BOOL FLogIsOpend(void)
{
        // LogVar->FileOpen
        return LogVar != NULL;
}

void FLogWriteStr(const char *str)
{
        if (LogVar != NULL)
        {
                DWORD wrote;
                size_t len = strlen(str);
                WriteFile(LogVar->FileHandle, str, len, &wrote, NULL);
                LogVar->ByteCount =
                        LogVar->ByteCount + len;
                if (FLogDlg!=NULL)
                        //FLogDlg->RefreshNum(LogVar);
                        FLogDlg->RefreshNum(LogVar->StartTime, LogVar->FileSize, LogVar->ByteCount);
        }
}

void FLogInfo(char *param_ptr, size_t param_len)
{
        if (LogVar) {
                param_ptr[0] = '0'
                        + (ts.LogBinary != 0)
                        + ((ts.Append != 0) << 1)
                        + ((ts.LogTypePlainText != 0) << 2)
                        + ((ts.LogTimestamp != 0) << 3)
                        + ((ts.LogHideDialog != 0) << 4);
                strncpy_s(param_ptr + 1, param_len - 1, LogVar->FullName, _TRUNCATE);
        }
        else {
                param_ptr[0] = '0' - 1;
                param_ptr[1] = 0;
        }
}

/**
 *      ���������O�t�@�C����������
 */
const char *FLogGetFilename()
{
        if (LogVar == NULL) {
                return NULL;
        }
        return LogVar->FullName;
}

/**
 *      ���O�_�C�A���O���J��
 *      @param[in,out]  info.filename   �t�@�C���������l
 *                                                                      OK���A�t�@�C�����A�s�v����������free()��������
 *      @retval TRUE    [ok] ����������
 *      @retval FALSE   �L�����Z��������
 */
BOOL FLogOpenDialog(HINSTANCE hInst, HWND hWnd, FLogDlgInfo_t *info)
{
        LogDlgWork_t *work = (LogDlgWork_t *)calloc(sizeof(LogDlgWork_t), 1);
        char *filenameA = ToCharW(info->filename);
        char *srcfnameA = FLogGetLogFilename(filenameA);
        wchar_t *srcfnameW = ToWcharA(srcfnameA);
        free(filenameA);
        free(srcfnameA);
        work->info = info;
        work->info->filename = srcfnameW;
        work->pts = &ts;
        INT_PTR ret = TTDialogBoxParam(
                hInst, MAKEINTRESOURCE(IDD_LOGDLG),
                hWnd, LogFnHook, (LPARAM)work);
        free(srcfnameW);
        free(work);
        return ret == IDOK ? TRUE : FALSE;
}

/**
 *      ���O�t�@�C����������
 *      ���O�t�@�C�����p���C�����s��
 *      - strftime() ���������t�W�J
 *      - �������������O�t�@�C���t�H���_������
 *      - �z�X�g��,�|�[�g�����W�J
 *
 *      @param[in]      log_filename    �t�@�C����(����/��������������ok)
 *                                                              NULL�������f�t�H���g�t�@�C����������
 *                                                              strftime�`��ok
 *      @return                                         �t���p�X�t�@�C����
 *                                                              �s�v���������� free() ��������
 */
char *FLogGetLogFilename(const char *log_filename)
{
        // �t�H���_
        char FileDirExpanded[MAX_PATH];
        char *logdir;
        if (strlen(ts.LogDefaultPath) > 0) {
                logdir = ts.LogDefaultPath;
        }
        else if (strlen(ts.FileDir) > 0) {
                ExpandEnvironmentStrings(ts.FileDir, FileDirExpanded, sizeof(FileDirExpanded));
                logdir = FileDirExpanded;
        }
        else {
                logdir = ts.HomeDir;
        }

        // ���������t�@�C����
        char base_name[MAX_PATH];
        if (log_filename == NULL) {
                strncpy_s(base_name, _countof(base_name), ts.LogDefaultName, _TRUNCATE);
        }
        else {
                strncpy_s(base_name, _countof(base_name), log_filename, _TRUNCATE);
        }

        // �t���p�X��
        char full_path[MAX_PATH];
        ConvFName(logdir, base_name, sizeof(base_name), "", full_path, sizeof(full_path));
        ParseStrftimeFileName(full_path, sizeof(full_path));
        ConvertLogname(full_path, sizeof(full_path));

        return _strdup(full_path);
}

BOOL FLogIsPause()
{
        return ((cv.FilePause & OpLog) !=0);
}

void FLogWindow(int nCmdShow)
{
        if (FLogDlg == NULL)
                return;

        HWND HWndLog = FLogDlg->m_hWnd;
        ShowWindow(HWndLog, nCmdShow);
        if (nCmdShow == SW_RESTORE) {
                // �g���X�^�C�� WS_EX_NOACTIVATE ��������������
                SetForegroundWindow(HWndLog);
        }
}

void FLogShowDlg(void)
{
        ShowFTDlg(OpLog);
}