/* Try to make an fvalue from a string using a value_string or true_false_string.
* This works only for ftypes that are integers. Returns the created fvalue_t*
* or NULL if impossible. */
static fvalue_t*
mk_fvalue_from_val_string(header_field_info *hfinfo, char *s)
{
static const true_false_string default_tf = { "True", "False" };
const true_false_string *tf = &default_tf;
/* Early return? */
switch(hfinfo->type) {
case FT_NONE:
case FT_PROTOCOL:
case FT_FLOAT:
case FT_DOUBLE:
case FT_ABSOLUTE_TIME:
case FT_RELATIVE_TIME:
case FT_IPv4:
case FT_IPv6:
case FT_IPXNET:
case FT_ETHER:
case FT_BYTES:
case FT_UINT_BYTES:
case FT_STRING:
case FT_STRINGZ:
case FT_EBCDIC:
case FT_UINT_STRING:
case FT_UINT64:
case FT_INT64:
case FT_PCRE:
case FT_GUID:
case FT_OID:
return NULL;
case FT_BOOLEAN:
case FT_FRAMENUM:
case FT_UINT8:
case FT_UINT16:
case FT_UINT24:
case FT_UINT32:
case FT_INT8:
case FT_INT16:
case FT_INT24:
case FT_INT32:
break;
case FT_NUM_TYPES:
g_assert_not_reached();
}
/* Reset the dfilter error message, since *something* interesting
* will happen, and the error message will be more interesting than
* any error message I happen to have now. */
dfilter_error_msg = NULL;
/* TRUE/FALSE *always* exist for FT_BOOLEAN. */
if (hfinfo->type == FT_BOOLEAN) {
if (hfinfo->strings) {
tf = hfinfo->strings;
}
if (g_ascii_strcasecmp(s, tf->true_string) == 0) {
return mk_uint32_fvalue(TRUE);
}
else if (g_ascii_strcasecmp(s, tf->false_string) == 0) {
return mk_uint32_fvalue(FALSE);
}
else {
dfilter_fail("\"%s\" cannot be found among the possible values for %s.",
s, hfinfo->abbrev);
return NULL;
}
}
/* Do val_strings exist? */
if (!hfinfo->strings) {
dfilter_fail("%s cannot accept strings as values.",
hfinfo->abbrev);
return NULL;
}
if (hfinfo->display & BASE_RANGE_STRING) {
dfilter_fail("\"%s\" cannot accept [range] strings as values.",
hfinfo->abbrev);
return NULL;
}
else {
const value_string *vals = hfinfo->strings;
while (vals->strptr != NULL) {
if (g_ascii_strcasecmp(s, vals->strptr) == 0) {
return mk_uint32_fvalue(vals->value);
}
vals++;
}
dfilter_fail("\"%s\" cannot be found among the possible values for %s.",
s, hfinfo->abbrev);
}
return NULL;
}
/* Try to make an fvalue from a string using a value_string or true_false_string.
* This works only for ftypes that are integers. Returns the created fvalue_t*
* or NULL if impossible. */
static fvalue_t*
mk_fvalue_from_val_string(header_field_info *hfinfo, char *s)
{
static const true_false_string default_tf = { "True", "False" };
const true_false_string *tf = &default_tf;
/* Early return? */
switch(hfinfo->type) {
case FT_NONE:
case FT_PROTOCOL:
case FT_FLOAT:
case FT_DOUBLE:
case FT_ABSOLUTE_TIME:
case FT_RELATIVE_TIME:
case FT_IPv4:
case FT_IPv6:
case FT_IPXNET:
case FT_ETHER:
case FT_BYTES:
case FT_UINT_BYTES:
case FT_STRING:
case FT_STRINGZ:
case FT_UINT_STRING:
case FT_UINT64:
case FT_INT64:
case FT_EUI64:
case FT_PCRE:
case FT_GUID:
case FT_OID:
return NULL;
case FT_BOOLEAN:
case FT_FRAMENUM:
case FT_UINT8:
case FT_UINT16:
case FT_UINT24:
case FT_UINT32:
case FT_INT8:
case FT_INT16:
case FT_INT24:
case FT_INT32:
break;
case FT_NUM_TYPES:
g_assert_not_reached();
}
/* TRUE/FALSE *always* exist for FT_BOOLEAN. */
if (hfinfo->type == FT_BOOLEAN) {
if (hfinfo->strings) {
tf = hfinfo->strings;
}
if (g_ascii_strcasecmp(s, tf->true_string) == 0) {
return mk_uint32_fvalue(TRUE);
}
else if (g_ascii_strcasecmp(s, tf->false_string) == 0) {
return mk_uint32_fvalue(FALSE);
}
else {
dfilter_error_msg = NULL; /* Prefer this error message */
dfilter_fail("\"%s\" cannot be found among the possible values for %s.",
s, hfinfo->abbrev);
return NULL;
}
}
/* Do val_strings exist? */
if (!hfinfo->strings) {
dfilter_fail("%s cannot accept strings as values.",
hfinfo->abbrev);
return NULL;
}
/* Reset the dfilter error message, since *something* interesting
* will happen, and the error message will be more interesting than
* any error message I happen to have now. */
dfilter_error_msg = NULL;
if (hfinfo->display & BASE_RANGE_STRING) {
dfilter_fail("\"%s\" cannot accept [range] strings as values.",
hfinfo->abbrev);
}
else if (hfinfo->display == BASE_CUSTOM) {
/* If a user wants to match against a custom string, we would
* somehow have to have the integer value here to pass it in
* to the custom-display function. But we don't have an
* integer, we have the string they're trying to match.
* -><-
*/
dfilter_fail("\"%s\" cannot accept [custom] strings as values.",
hfinfo->abbrev);
}
else {
const value_string *vals = hfinfo->strings;
if (hfinfo->display & BASE_EXT_STRING)
vals = VALUE_STRING_EXT_VS_P((value_string_ext *) vals);
while (vals->strptr != NULL) {
if (g_ascii_strcasecmp(s, vals->strptr) == 0) {
return mk_uint32_fvalue(vals->value);
}
vals++;
}
dfilter_fail("\"%s\" cannot be found among the possible values for %s.",
s, hfinfo->abbrev);
}
return NULL;
}
