diff options
Diffstat (limited to 'xshared.c')
-rw-r--r-- | xshared.c | 37 |
1 files changed, 37 insertions, 0 deletions
@@ -1,3 +1,5 @@ +#include <netdb.h> +#include <stdint.h> #include <stdio.h> #include <xtables.h> #include "xshared.h" @@ -29,3 +31,38 @@ void print_extension_helps(const struct xtables_target *t, m->match->help(); } } + +const char * +proto_to_name(uint8_t proto, int nolookup) +{ + unsigned int i; + + if (proto && !nolookup) { + struct protoent *pent = getprotobynumber(proto); + if (pent) + return pent->p_name; + } + + for (i = 0; xtables_chain_protos[i].name != NULL; ++i) + if (xtables_chain_protos[i].num == proto) + return xtables_chain_protos[i].name; + + return NULL; +} + +struct xtables_match * +find_proto(const char *pname, enum xtables_tryload tryload, + int nolookup, struct xtables_rule_match **matches) +{ + unsigned int proto; + + if (xtables_strtoui(pname, NULL, &proto, 0, UINT8_MAX)) { + const char *protoname = proto_to_name(proto, nolookup); + + if (protoname) + return xtables_find_match(protoname, tryload, matches); + } else + return xtables_find_match(pname, tryload, matches); + + return NULL; +} |