1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <string.h> 4 #include <errno.h> 5 6 #include <libnetfilter_conntrack/libnetfilter_conntrack.h> 7 8 static int cb(enum nf_conntrack_msg_type type, 9 struct nf_conntrack *ct, 10 void *data) 11 { 12 char buf[1024]; 13 14 nfct_snprintf(buf, sizeof(buf), ct, NFCT_T_UNKNOWN, NFCT_O_DEFAULT, NFCT_OF_SHOW_LAYER3 | NFCT_OF_TIMESTAMP); 15 printf("%s\n", buf); 16 17 return NFCT_CB_CONTINUE; 18 } 19 20 int main(void) 21 { 22 int ret; 23 struct nfct_handle *h; 24 25 h = nfct_open(CONNTRACK, 0); 26 if (!h) { 27 perror("nfct_open"); 28 return -1; 29 } 30 struct nfct_filter_dump *filter_dump = nfct_filter_dump_create(); 31 if (filter_dump == NULL) { 32 perror("nfct_filter_dump_alloc"); 33 return -1; 34 } 35 struct nfct_filter_dump_mark filter_dump_mark = { 36 .val = 1, 37 .mask = 0xffffffff, 38 }; 39 nfct_filter_dump_set_attr(filter_dump, NFCT_FILTER_DUMP_MARK, 40 &filter_dump_mark); 41 nfct_filter_dump_set_attr_u8(filter_dump, NFCT_FILTER_DUMP_L3NUM, 42 AF_INET); 43 44 nfct_callback_register(h, NFCT_T_ALL, cb, NULL); 45 ret = nfct_query(h, NFCT_Q_DUMP_FILTER, filter_dump); 46 47 nfct_filter_dump_destroy(filter_dump); 48 49 printf("TEST: get conntrack "); 50 if (ret == -1) 51 printf("(%d)(%s)\n", ret, strerror(errno)); 52 else 53 printf("(OK)\n"); 54 55 nfct_close(h); 56 57 ret == -1 ? exit(EXIT_FAILURE) : exit(EXIT_SUCCESS); 58 } 59
