예제 #1
0
파일: strerror.c 프로젝트: jetlive/skiaming
/***
*errno_t strerror_s(buffer, sizeInTChars, errnum) - Map error number to error message string.
*
*Purpose:
*       The strerror_s runtime takes an error number for input and
*       copies the corresponding error message string in the destination
*       buffer. If the buffer is too small, the message is truncated.
*
*Entry:
*       TCHAR * buffer - Destination buffer.
*       size_t sizeInTChars - Size of the destination buffer.
*       int errnum - Integer error number (corresponding to an errno value).
*
*Exit:
*       The error code.
*
*Exceptions:
*       Input parameters are validated. Refer to the validation section of the function.
*
*******************************************************************************/

#ifdef _UNICODE
errno_t __cdecl _wcserror_s(
#else  /* _UNICODE */
errno_t __cdecl strerror_s(
#endif  /* _UNICODE */
        TCHAR* buffer,
        size_t sizeInTChars,
        int errnum
        )
{
        errno_t e = 0;

        /* validation section */
        _VALIDATE_RETURN_ERRCODE(buffer != NULL, EINVAL);
        _VALIDATE_RETURN_ERRCODE(sizeInTChars > 0, EINVAL);

        /* we use mbstowcs_s or strncpy_s because we want to truncate the error string
         * if the destination is not big enough
         */
#ifdef _UNICODE
        e = _ERRCHECK_EINVAL_ERANGE(mbstowcs_s(NULL, buffer, sizeInTChars, _get_sys_err_msg(errnum), _TRUNCATE));
        /* ignore the truncate information */
        if (e == STRUNCATE)
        {
                e = 0;
        }
#else  /* _UNICODE */
        _ERRCHECK(strncpy_s(buffer, sizeInTChars, _get_sys_err_msg(errnum), sizeInTChars - 1));
#endif  /* _UNICODE */
    return e;
}
예제 #2
0
파일: wperror.c 프로젝트: flychen50/clib
void __cdecl _wperror (
        const wchar_t *wmessage
        )
{
        int fh = 2;
        size_t size = 0;
        char *amessage;
        const char *sysmessage;

        /* convert WCS string into ASCII string */

        if ( wmessage && *wmessage )
        {
            _ERRCHECK_EINVAL_ERANGE(wcstombs_s( &size, NULL, 0, wmessage, INT_MAX));

            if ( size==0 || (amessage = (char *)_calloc_crt(size, sizeof(char))) == NULL )
                return;

            if ( _ERRCHECK_EINVAL_ERANGE(wcstombs_s(NULL, amessage, size, wmessage, _TRUNCATE)) != 0)
            {
                _free_crt(amessage);
                return;
            }
        }
        else
            amessage = NULL;

        _lock_fh( fh );         /* acquire file handle lock */
        __try {

        if ( amessage )
        {
                _write_nolock(fh,(char *)amessage,(unsigned)strlen(amessage));
                _write_nolock(fh,": ",2);
        }

        _free_crt(amessage);    /* note: freeing NULL is legal and benign */

        sysmessage = _get_sys_err_msg( errno );
        _write_nolock(fh, sysmessage,(unsigned)strlen(sysmessage));
        _write_nolock(fh,"\n",1);

        }
        __finally {
            _unlock_fh( fh );   /* release file handle lock */
        }
}
예제 #3
0
// prefast (6262): This func uses lots of stack because we want to tolerate very large reports, and we can't use malloc here.
int __cdecl _VCrtDbgReportA(
    int nRptType,
    void * returnAddress,
    char const* szFile,
    int nLine,
    char const* szModule,
    char const* szFormat,
    va_list arglist
    )
{
    int retval=0;
    int handled=FALSE;

    char    szLineMessage[DBGRPT_MAX_MSG]{0};
    char    szOutMessage [DBGRPT_MAX_MSG]{0};
    wchar_t szOutMessage2[DBGRPT_MAX_MSG]{0};
    char    szUserMessage[DBGRPT_MAX_MSG]{0};

    if (nRptType < 0 || nRptType >= _CRT_ERRCNT)
        return -1;

    /*
     * handle the (hopefully rare) case of
     *
     * 1) ASSERT while already dealing with an ASSERT
     *      or
     * 2) two threads asserting at the same time
     */

    __try
    {
        if (_CRT_ASSERT == nRptType && _InterlockedIncrement(&_crtAssertBusy) > 0)
        {
            /* use only 'safe' functions -- must not assert in here! */

            _ERRCHECK(_itoa_s(nLine, szLineMessage, DBGRPT_MAX_MSG, 10));

            OutputDebugStringA("Second Chance Assertion Failed: File ");
            OutputDebugStringA(szFile ? szFile : "<file unknown>");
            OutputDebugStringA(", Line ");
            OutputDebugStringA(szLineMessage);
            OutputDebugStringA("\n");

            _CrtDbgBreak();
            retval=-1;
            __leave;
        }

        // Leave space for ASSERTINTRO1 and "\r\n"
        if (szFormat)
        {
            int szlen = 0;
            _ERRCHECK_SPRINTF(szlen = _vsnprintf_s(szUserMessage, DBGRPT_MAX_MSG,
                                                    DBGRPT_MAX_MSG - 2- max(sizeof(ASSERTINTRO1),sizeof(ASSERTINTRO2)),
                                                    szFormat, arglist));
            if (szlen < 0)
            {
                _ERRCHECK(strcpy_s(szUserMessage, DBGRPT_MAX_MSG, DBGRPT_TOOLONGMSG));
            }
        }

        if (_CRT_ASSERT == nRptType)
        {
            _ERRCHECK(strcpy_s(szLineMessage, DBGRPT_MAX_MSG, szFormat ? ASSERTINTRO1 : ASSERTINTRO2));
        }

        _ERRCHECK(strcat_s(szLineMessage, DBGRPT_MAX_MSG, szUserMessage));

        if (_CRT_ASSERT == nRptType)
        {
            if (_CrtDbgMode[nRptType] & _CRTDBG_MODE_FILE)
            {
                _ERRCHECK(strcat_s(szLineMessage, DBGRPT_MAX_MSG, "\r"));
            }

            _ERRCHECK(strcat_s(szLineMessage, DBGRPT_MAX_MSG, "\n"));
        }

        if (szFile)
        {
            int szlen = 0;
            _ERRCHECK_SPRINTF(szlen = _snprintf_s(szOutMessage, DBGRPT_MAX_MSG, DBGRPT_MAX_MSG - 1, "%s(%d) : %s",
                                                    szFile, nLine, szLineMessage));
            if (szlen < 0)
            {
                _ERRCHECK(strcpy_s(szOutMessage, DBGRPT_MAX_MSG, DBGRPT_TOOLONGMSG));
            }
        }
        else
        {
            _ERRCHECK(strcpy_s(szOutMessage, DBGRPT_MAX_MSG, szLineMessage));
        }

        {
            size_t ret = 0;
            errno_t e = 0;
            _ERRCHECK_EINVAL_ERANGE(e = mbstowcs_s(&ret, szOutMessage2, DBGRPT_MAX_MSG, szOutMessage, _TRUNCATE));
            if(e != 0)
            {
                _ERRCHECK(wcscpy_s(szOutMessage2, DBGRPT_MAX_MSG, _CRT_WIDE(DBGRPT_INVALIDMSG)));
            }
        }

        /* User hook may handle report.
            We have to check the ANSI Hook2 List & then the UNICODE Hook2 List.
            Then we have check any ANSI individual Hook set through
            SetReportHook */

        if (_pReportHookList || _pReportHookListW)
        {
            __crt_report_hook_node<char> *pnode=nullptr;
            __crt_report_hook_node<wchar_t> *pnodeW=nullptr;

            __acrt_lock(__acrt_debug_lock);
            __try
            {
                for (pnode = _pReportHookList; pnode; pnode = pnode->next)
                {
                    int hook_retval=0;
                    if (pnode->hook(nRptType, szOutMessage, &hook_retval))
                    {
                        handled=TRUE;
                        retval=hook_retval;
                        __leave;
                    }
                }

                for (pnodeW = _pReportHookListW; pnodeW; pnodeW = pnodeW->next)
                {
                    int hook_retval=0;
                    if (pnodeW->hook(nRptType, szOutMessage2, &hook_retval))
                    {
                        handled=TRUE;
                        retval=hook_retval;
                        __leave;
                    }
                }
            }
            __finally
            {
                __acrt_unlock(__acrt_debug_lock);
            }
        }

        if (handled)
            __leave;

        if (_pfnReportHook)
        {
            int hook_retval=0;
            if (_pfnReportHook(nRptType, szOutMessage, &hook_retval))
            {
                retval = hook_retval;
                __leave;
            }
        }

        if (_CrtDbgMode[nRptType] & _CRTDBG_MODE_FILE)
        {
            if (_CrtDbgFile[nRptType] != _CRTDBG_INVALID_HFILE)
            {
                DWORD bytes_written = 0;
                WriteFile(_CrtDbgFile[nRptType], szOutMessage, static_cast<DWORD>(strlen(szOutMessage)), &bytes_written, nullptr);
            }
        }

        if (_CrtDbgMode[nRptType] & _CRTDBG_MODE_DEBUG)
        {
            OutputDebugStringA(szOutMessage);
        }

        if (_CrtDbgMode[nRptType] & _CRTDBG_MODE_WNDW)
        {
            szLineMessage[0] = 0;
            if (nLine)
            {
                _ERRCHECK(_itoa_s(nLine, szLineMessage, DBGRPT_MAX_MSG, 10));
            }

            retval = __acrt_MessageWindowA(nRptType, returnAddress, szFile, (nLine ? szLineMessage : nullptr), szModule, szUserMessage);
        }
    }