diff options
Diffstat (limited to 'src/datatype.c')
| -rw-r--r-- | src/datatype.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/src/datatype.c b/src/datatype.c index be328518..932acc7d 100644 --- a/src/datatype.c +++ b/src/datatype.c @@ -458,14 +458,28 @@ static struct error_record *inet_protocol_type_parse(const struct expr *sym, struct expr **res) { struct protoent *p; + uint8_t proto; + uintmax_t i; + char *end; - p = getprotobyname(sym->identifier); - if (p == NULL) - return error(&sym->location, "Could not resolve protocol name"); + errno = 0; + i = strtoumax(sym->identifier, &end, 0); + if (sym->identifier != end && *end == '\0') { + if (errno == ERANGE || i > UINT8_MAX) + return error(&sym->location, "Protocol out of range"); + + proto = i; + } else { + p = getprotobyname(sym->identifier); + if (p == NULL) + return error(&sym->location, "Could not resolve protocol name"); + + proto = p->p_proto; + } *res = constant_expr_alloc(&sym->location, &inet_protocol_type, BYTEORDER_HOST_ENDIAN, BITS_PER_BYTE, - &p->p_proto); + &proto); return NULL; } |