Function ippValidateAttribute

cups/ipp.c:3983–4479

 */

int					/* O - 1 if valid, 0 otherwise */
ippValidateAttribute(
    ipp_attribute_t *attr)		/* I - Attribute */
{
  int		i;			/* Looping var */
  char		scheme[64],		/* Scheme from URI */
		userpass[256],		/* Username/password from URI */
		hostname[256],		/* Hostname from URI */
		resource[1024];		/* Resource from URI */
  int		port,			/* Port number from URI */
		uri_status;		/* URI separation status */
  const char	*ptr;			/* Pointer into string */
  ipp_attribute_t *colattr;		/* Collection attribute */
  regex_t	re;			/* Regular expression */
  ipp_uchar_t	*date;			/* Current date value */


 /*
  * Skip separators.
  */

  if (!attr->name)
    return (1);

 /*
  * Validate the attribute name.
  */

  for (ptr = attr->name; *ptr; ptr ++)
    if (!isalnum(*ptr & 255) && *ptr != '-' && *ptr != '.' && *ptr != '_')
      break;

  if (*ptr || ptr == attr->name)
  {
    ipp_set_error(IPP_STATUS_ERROR_BAD_REQUEST, _("\"%s\": Bad attribute name - invalid character (RFC 8011 section 5.1.4)."), attr->name);
    return (0);
  }

  if ((ptr - attr->name) > 255)
  {
    ipp_set_error(IPP_STATUS_ERROR_BAD_REQUEST, _("\"%s\": Bad attribute name - bad length %d (RFC 8011 section 5.1.4)."), attr->name, (int)(ptr - attr->name));
    return (0);
  }

  switch (attr->value_tag)
  {
    case IPP_TAG_INTEGER :
        break;

    case IPP_TAG_BOOLEAN :
        for (i = 0; i < attr->num_values; i ++)
	{
	  if (attr->values[i].boolean != 0 &&
	      attr->values[i].boolean != 1)
	  {
	    ipp_set_error(IPP_STATUS_ERROR_BAD_REQUEST, _("\"%s\": Bad boolean value %d (RFC 8011 section 5.1.21)."), attr->name, attr->values[i].boolean);
	    return (0);
	  }