teraterm/teraterm/ttplug.c

/*
 * Copyright (C) 1994-1998 T. Teranishi
 * (C) Robert O'Callahan
 * (C) 2004- 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.
 */
#include <winsock2.h>
#include "teraterm.h"
#include "tttypes.h"
#include "ttlib.h"

#define _CRTDBG_MAP_ALLOC
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <crtdbg.h>

#include "ttplugin.h"
#include "codeconv.h"
#include "asprintf.h"

#include "ttplug.h"

typedef struct _ExtensionList {
        TTXExports * exports;
        HANDLE LibHandle;
} ExtensionList;

static ExtensionList *Extensions;
static int NumExtensions = 0;

static int compareOrder(const void * e1, const void * e2)
{
        TTXExports * * exports1 = (TTXExports * *)e1;
        TTXExports * * exports2 = (TTXExports * *)e2;

        return (*exports1)->loadOrder - (*exports2)->loadOrder;
}

static void loadExtension(wchar_t const *fileName, const wchar_t *UILanguageFile)
{
        DWORD err;
        const wchar_t *sub_message;
        HMODULE hPlugin;

        hPlugin = LoadLibraryW(fileName);
        if (hPlugin != NULL) {
                TTXBindProc bind = NULL;
                FARPROC *pbind = (FARPROC *)&bind;
#if defined(_MSC_VER)
                if (bind == NULL)
                        *pbind = GetProcAddress(hPlugin, "_TTXBind@8");
#else
                if (bind == NULL)
                        *pbind = GetProcAddress(hPlugin, "TTXBind@8");
#endif
                if (bind == NULL)
                        *pbind = GetProcAddress(hPlugin, "TTXBind");
                if (bind != NULL) {
                        TTXExports * exports = (TTXExports *)malloc(sizeof(TTXExports));
                        if (exports == NULL) {
                                return;
                        }
                        memset(exports, 0, sizeof(TTXExports));
                        exports->size = sizeof(TTXExports);

                        if (bind(TTVERSION, exports)) {
                                ExtensionList *newExtension;
                                ExtensionList *extensions = (ExtensionList *)realloc(Extensions, sizeof(ExtensionList) * (NumExtensions + 1));
                                if (extensions == NULL) {
                                        free(exports);
                                        FreeLibrary(hPlugin);
                                        return;
                                }
                                Extensions = extensions;
                                newExtension = &extensions[NumExtensions];
                                NumExtensions++;

                                newExtension->exports = exports;
                                newExtension->LibHandle = hPlugin;
                                return;
                        }
                        else {
                                free(exports);
                        }
                }
                FreeLibrary(hPlugin);
        }

        err = GetLastError();
        switch (err) {
                case 31:
                        sub_message = L"Unresolved dll entry";
                        break;
                case 1114:
                        sub_message = L"tls entry exists";
                        break;
                case 2:
                        sub_message = L"rejected by plugin";
                        break;
                case 193:
                        sub_message = L"invalid dll image";
                        break;
                default:
                        sub_message = L"unknown";
                        break;
        }
        // �����t�@�C�����������b�Z�[�W�����������s�����������A�������_����������
        // �������������������������A���b�Z�[�W���p���������������B�v�����B
        {
                static const TTMessageBoxInfoW info = {
                        "Tera Term",
                        "MSG_TT_ERROR", L"Tera Term: Error",
                        "MSG_LOAD_EXT_ERROR", L"Cannot load extension %s (%d, %s)",
                        MB_OK | MB_ICONEXCLAMATION
                };
                TTMessageBoxW(NULL, &info, UILanguageFile, fileName, err, sub_message);
        }
}

static void LoadExtensions(PTTSet ts_)
{
        wchar_t *load_mask;
        WIN32_FIND_DATAW fd;
        HANDLE hFind;
        wchar_t *ExeDirW = ts_->ExeDirW;

        aswprintf(&load_mask, L"%s\\TTX*.DLL", ExeDirW);

        hFind = FindFirstFileW(load_mask, &fd);
        if (hFind != INVALID_HANDLE_VALUE) {
                do {
                        wchar_t *filename;
                        aswprintf(&filename, L"%s\\%s", ExeDirW, fd.cFileName);
                        loadExtension(filename, ts_->UILanguageFileW);
                        free(filename);
                } while (FindNextFileW(hFind, &fd));
                FindClose(hFind);
        }
        free(load_mask);

        if (NumExtensions==0) return;

        qsort(Extensions, NumExtensions, sizeof(Extensions[0]), compareOrder);
}

static void UnloadExtensions()
{
        int i;
        for (i = 0; i < NumExtensions; i++) {
                free(Extensions[i].exports);
                FreeLibrary(Extensions[i].LibHandle);
        }

        free(Extensions);
        Extensions = NULL;
        NumExtensions = 0;
}

void PASCAL TTXInit(PTTSet ts_, PComVar cv_)
{
        int i;

        LoadExtensions(ts_);

        if (NumExtensions==0) return;

        for (i = 0; i < NumExtensions; i++) {
                if (Extensions[i].exports->TTXInit != NULL) {
                        Extensions[i].exports->TTXInit(ts_, cv_);
                }
        }
}

static void PASCAL TTXInternalOpenTCP(TTXSockHooks * hooks) {
  int i;

  for (i = 0; i < NumExtensions; i++) {
    if (Extensions[i].exports->TTXOpenTCP != NULL) {
      Extensions[i].exports->TTXOpenTCP(hooks);
    }
  }
}

void PASCAL TTXOpenTCP(void)
{
        static TTXSockHooks SockHooks = {
                &Pclosesocket, &Pconnect, &Phtonl, &Phtons, &Pinet_addr,
                &Pioctlsocket, &Precv, &Pselect, &Psend, &Psetsockopt,
                &Psocket, &PWSAAsyncSelect, &PWSAAsyncGetHostByName,
                &PWSACancelAsyncRequest, &PWSAGetLastError,
                /* &Pgetaddrinfo,*/ &Pfreeaddrinfo, &PWSAAsyncGetAddrInfo
        };
        TTXInternalOpenTCP(&SockHooks);
}

static void PASCAL TTXInternalCloseTCP(TTXSockHooks * hooks) {
  int i;

  for (i = NumExtensions - 1; i >= 0; i--) {
    if (Extensions[i].exports->TTXCloseTCP != NULL) {
      Extensions[i].exports->TTXCloseTCP(hooks);
    }
  }
}

void PASCAL TTXCloseTCP(void)
{
        static TTXSockHooks SockHooks = {
                &Pclosesocket, &Pconnect, &Phtonl, &Phtons, &Pinet_addr,
                &Pioctlsocket, &Precv, &Pselect, &Psend, &Psetsockopt,
                &Psocket, &PWSAAsyncSelect, &PWSAAsyncGetHostByName,
                &PWSACancelAsyncRequest, &PWSAGetLastError,
                /* &Pgetaddrinfo,*/ &Pfreeaddrinfo, &PWSAAsyncGetAddrInfo
        };
        TTXInternalCloseTCP(&SockHooks);
}

static void PASCAL TTXInternalOpenFile(TTXFileHooks * hooks) {
  int i;

  for (i = 0; i < NumExtensions; i++) {
    if (Extensions[i].exports->TTXOpenFile != NULL) {
      Extensions[i].exports->TTXOpenFile(hooks);
    }
  }
}

void PASCAL TTXOpenFile(void)
{
        static TTXFileHooks FileHooks = {
                &PCreateFile, &PCloseFile, &PReadFile, &PWriteFile
        };
        TTXInternalOpenFile(&FileHooks);
}

static void PASCAL TTXInternalCloseFile(TTXFileHooks * hooks) {
  int i;

  for (i = NumExtensions - 1; i >= 0; i--) {
    if (Extensions[i].exports->TTXCloseFile != NULL) {
      Extensions[i].exports->TTXCloseFile(hooks);
    }
  }
}

void PASCAL TTXCloseFile(void)
{
        static TTXFileHooks FileHooks = {
                &PCreateFile, &PCloseFile, &PReadFile, &PWriteFile
        };
        TTXInternalCloseFile(&FileHooks);
}

static void PASCAL TTXInternalGetUIHooks(TTXUIHooks * hooks) {
  int i;

  for (i = 0; i < NumExtensions; i++) {
    if (Extensions[i].exports->TTXGetUIHooks != NULL) {
      Extensions[i].exports->TTXGetUIHooks(hooks);
    }
  }
}

void PASCAL TTXGetUIHooks(void)
{
        static TTXUIHooks UIHooks = {
                &SetupTerminal, &SetupWin, &SetupKeyboard, &SetupSerialPort,
                &SetupTCPIP, &GetHostName, &ChangeDirectory, &AboutDialog,
                &ChooseFontDlg, &SetupGeneral, &WindowWindow
        };
        TTXInternalGetUIHooks(&UIHooks);
}

static void PASCAL TTXInternalGetSetupHooks(TTXSetupHooks * hooks) {
  int i;

  for (i = NumExtensions - 1; i >= 0; i--) {
    if (Extensions[i].exports->TTXGetSetupHooks != NULL) {
      Extensions[i].exports->TTXGetSetupHooks(hooks);
    }
  }
}

void PASCAL TTXGetSetupHooks(void)
{
        static TTXSetupHooks SetupHooks = {
                &ReadIniFile, &WriteIniFile, &ReadKeyboardCnf, &CopyHostList,
                &AddHostToList, &ParseParam
        };
        TTXInternalGetSetupHooks(&SetupHooks);
}

void PASCAL TTXSetWinSize(int rows, int cols) {
  int i;

  for (i = 0; i < NumExtensions; i++) {
    if (Extensions[i].exports->TTXSetWinSize != NULL) {
      Extensions[i].exports->TTXSetWinSize(rows, cols);
    }
  }
}

void PASCAL TTXModifyMenu(HMENU menu) {
  int i;

  for (i = 0; i < NumExtensions; i++) {
    if (Extensions[i].exports->TTXModifyMenu != NULL) {
      Extensions[i].exports->TTXModifyMenu(menu);
    }
  }
}

void PASCAL TTXModifyPopupMenu(HMENU menu) {
  int i;

  for (i = 0; i < NumExtensions; i++) {
    if (Extensions[i].exports->TTXModifyPopupMenu != NULL) {
      Extensions[i].exports->TTXModifyPopupMenu(menu);
    }
  }
}

BOOL PASCAL TTXProcessCommand(HWND hWin, WORD cmd) {
  int i;

  for (i = NumExtensions - 1; i >= 0; i--) {
    if (Extensions[i].exports->TTXProcessCommand != NULL) {
      if (Extensions[i].exports->TTXProcessCommand(hWin,cmd)) {
        return TRUE;
      }
    }
  }

  return FALSE;
}

void PASCAL TTXEnd(void)
{
        int i;

        if (NumExtensions == 0)
                return;

        for (i = NumExtensions - 1; i >= 0; i--) {
                if (Extensions[i].exports->TTXEnd != NULL) {
                        Extensions[i].exports->TTXEnd();
                }
        }

        UnloadExtensions();
}

void PASCAL TTXSetCommandLine(wchar_t *cmd, int cmdlen, PGetHNRec rec)
{
        int i;

        for (i = 0; i < NumExtensions; i++) {
                if (Extensions[i].exports->TTXSetCommandLine != NULL) {
                        Extensions[i].exports->TTXSetCommandLine(cmd, cmdlen, rec);
                }
        }
}