Function _cupsFileCheck

cups/file.c:77–295

 */

_cups_fc_result_t			/* O - Check result */
_cupsFileCheck(
    const char          *filename,	/* I - Filename to check */
    _cups_fc_filetype_t filetype,	/* I - Type of file checks? */
    int                 dorootchecks,	/* I - Check for root permissions? */
    _cups_fc_func_t     cb,		/* I - Callback function */
    void                *context)	/* I - Context pointer for callback */

{
  struct stat		fileinfo;	/* File information */
  char			message[1024],	/* Message string */
			temp[1024],	/* Parent directory filename */
			*ptr;		/* Pointer into parent directory */
  _cups_fc_result_t	result;		/* Check result */


 /*
  * Does the filename contain a relative path ("../")?
  */

  if (strstr(filename, "../"))
  {
   /*
    * Yes, fail it!
    */

    result = _CUPS_FILE_CHECK_RELATIVE_PATH;
    goto finishup;
  }

 /*
  * Does the program even exist and is it accessible?
  */

  if (stat(filename, &fileinfo))
  {
   /*
    * Nope...
    */

    result = _CUPS_FILE_CHECK_MISSING;
    goto finishup;
  }

 /*
  * Check the execute bit...
  */

  result = _CUPS_FILE_CHECK_OK;

  if (filetype == _CUPS_FILE_CHECK_DIRECTORY)
  {
    if (!S_ISDIR(fileinfo.st_mode))
      result = _CUPS_FILE_CHECK_WRONG_TYPE;
  }
  else  if (!S_ISREG(fileinfo.st_mode))
  {
    result = _CUPS_FILE_CHECK_WRONG_TYPE;