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Allow filtering by name for conntrack status flags

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This commit is contained in:
Philip Craig 2007-09-18 11:52:59 +10:00 committed by Thomas Graf
parent 104e158bd5
commit cbe8902265
5 changed files with 38 additions and 9 deletions
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1
include/netlink-types.h
View File

@ -717,6 +717,7 @@ struct nfnl_ct {
union nfnl_ct_protoinfo ct_protoinfo;
uint32_t ct_status;
uint32_t ct_status_mask;
uint32_t ct_timeout;
uint32_t ct_mark;
uint32_t ct_use;

2
include/netlink/netfilter/ct.h
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@ -53,7 +53,7 @@ extern char * nfnl_ct_tcp_state2str(uint8_t, char *, size_t);
extern int nfnl_ct_str2tcp_state(const char *name);
extern void nfnl_ct_set_status(struct nfnl_ct *, uint32_t);
extern int nfnl_ct_test_status(const struct nfnl_ct *);
extern void nfnl_ct_unset_status(struct nfnl_ct *, uint32_t);
extern uint32_t nfnl_ct_get_status(const struct nfnl_ct *);
extern void nfnl_ct_set_timeout(struct nfnl_ct *, uint32_t);

16
lib/netfilter/ct_obj.c
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@ -204,7 +204,6 @@ static int ct_compare(struct nl_object *_a, struct nl_object *_b,
diff |= CT_DIFF_VAL(FAMILY, ct_family);
diff |= CT_DIFF_VAL(PROTO, ct_proto);
diff |= CT_DIFF_VAL(TCP_STATE, ct_protoinfo.tcp.state);
diff |= CT_DIFF_VAL(STATUS, ct_status);
diff |= CT_DIFF_VAL(TIMEOUT, ct_timeout);
diff |= CT_DIFF_VAL(MARK, ct_mark);
diff |= CT_DIFF_VAL(USE, ct_use);
@ -228,6 +227,12 @@ static int ct_compare(struct nl_object *_a, struct nl_object *_b,
diff |= CT_DIFF_VAL(REPL_PACKETS, ct_repl.packets);
diff |= CT_DIFF_VAL(REPL_BYTES, ct_repl.bytes);
if (flags & LOOSE_FLAG_COMPARISON)
diff |= CT_DIFF(STATUS, (a->ct_status ^ b->ct_status) &
b->ct_status_mask);
else
diff |= CT_DIFF(STATUS, a->ct_status != b->ct_status);
#undef CT_DIFF
#undef CT_DIFF_VAL
#undef CT_DIFF_ADDR
@ -367,13 +372,16 @@ int nfnl_ct_str2tcp_state(const char *name)
void nfnl_ct_set_status(struct nfnl_ct *ct, uint32_t status)
{
ct->ct_status = status;
ct->ct_status_mask |= status;
ct->ct_status |= status;
ct->ce_mask |= CT_ATTR_STATUS;
}
int nfnl_ct_test_status(const struct nfnl_ct *ct)
void nfnl_ct_unset_status(struct nfnl_ct *ct, uint32_t status)
{
return !!(ct->ce_mask & CT_ATTR_STATUS);
ct->ct_status_mask |= status;
ct->ct_status &= ~status;
ct->ce_mask |= CT_ATTR_STATUS;
}
uint32_t nfnl_ct_get_status(const struct nfnl_ct *ct)

23
src/f_ct.c
View File

@ -38,8 +38,11 @@ static void get_filter(struct nfnl_ct *ct, int argc, char **argv, int idx)
nfnl_ct_set_tcp_state(ct, state);
}
} else if (arg_match("status")) {
if (argc > ++idx)
nfnl_ct_set_status(ct, strtoul(argv[idx++], NULL, 0));
if (argc > ++idx) {
int status = strtoul(argv[idx++], NULL, 0);
nfnl_ct_set_status(ct, status);
nfnl_ct_unset_status(ct, ~status);
}
} else if (arg_match("timeout")) {
if (argc > ++idx)
nfnl_ct_set_timeout(ct, strtoul(argv[idx++], NULL, 0));
@ -130,7 +133,21 @@ static void get_filter(struct nfnl_ct *ct, int argc, char **argv, int idx)
} else if (arg_match("replybytes")) {
if (argc > ++idx)
nfnl_ct_set_bytes(ct, 1, strtoul(argv[idx++], NULL, 0));
} else {
}
#define MSTATUS(STR, STATUS) \
else if (!strcasecmp(argv[idx], STR)) { \
nfnl_ct_set_status(ct, STATUS); idx++; }
#define MNOSTATUS(STR, STATUS) \
else if (!strcasecmp(argv[idx], STR)) { \
nfnl_ct_unset_status(ct, STATUS); idx++; }
MSTATUS("replied", IPS_SEEN_REPLY)
MNOSTATUS("unreplied", IPS_SEEN_REPLY)
MSTATUS("assured", IPS_ASSURED)
MNOSTATUS("unassured", IPS_ASSURED)
#undef MSTATUS
#undef MNOSTATUS
else {
fprintf(stderr, "What is '%s'?\n", argv[idx]);
exit(1);
}

5
src/nf-ct-dump.c
View File

@ -13,6 +13,7 @@
#include "utils.h"
#include <netlink/netfilter/ct.h>
#include <linux/netfilter/nf_conntrack_common.h>
#include "f_ct.c"
@ -28,7 +29,9 @@ static void print_usage(void)
" [origpackets PACKETS] [origbytes BYTES]\n"
" [replysrc ADDR] [replydst ADDR] [replysrcport PORT] [replydstport PORT]\n"
" [replyicmpid ID] [replyicmptype TYPE] [replyicmpcode CODE]\n"
" [replypackets PACKETS] [replybytes BYTES]\n");
" [replypackets PACKETS] [replybytes BYTES]\n"
" [{ replied | unreplied }] [{ assured | unassured }]\n"
);
exit(1);
}