00001 #include <stdio.h> 00002 #include <stdlib.h> 00003 #include <string.h> 00004 #include <errno.h> 00005 #include <arpa/inet.h> 00006 00007 #include <libnetfilter_conntrack/libnetfilter_conntrack.h> 00008 #include <libnetfilter_conntrack/libnetfilter_conntrack_tcp.h> 00009 00010 static int cb(enum nf_conntrack_msg_type type, 00011 struct nf_conntrack *ct, 00012 void *data) 00013 { 00014 char buf[1024]; 00015 00016 nfct_snprintf(buf, sizeof(buf), ct, NFCT_T_UNKNOWN, NFCT_O_DEFAULT, NFCT_OF_SHOW_LAYER3); 00017 printf("%s\n", buf); 00018 00019 return NFCT_CB_CONTINUE; 00020 } 00021 00022 int main(void) 00023 { 00024 int ret; 00025 struct nfct_handle *h; 00026 struct nf_conntrack *ct; 00027 00028 ct = nfct_new(); 00029 if (!ct) { 00030 perror("nfct_new"); 00031 return 0; 00032 } 00033 00034 nfct_set_attr_u8(ct, ATTR_L3PROTO, AF_INET); 00035 nfct_set_attr_u32(ct, ATTR_IPV4_SRC, inet_addr("1.1.1.1")); 00036 nfct_set_attr_u32(ct, ATTR_IPV4_DST, inet_addr("2.2.2.2")); 00037 00038 nfct_set_attr_u8(ct, ATTR_L4PROTO, IPPROTO_TCP); 00039 nfct_set_attr_u16(ct, ATTR_PORT_SRC, htons(20)); 00040 nfct_set_attr_u16(ct, ATTR_PORT_DST, htons(10)); 00041 00042 h = nfct_open(CONNTRACK, 0); 00043 if (!h) { 00044 perror("nfct_open"); 00045 return -1; 00046 } 00047 00048 nfct_callback_register(h, NFCT_T_ALL, cb, NULL); 00049 00050 ret = nfct_query(h, NFCT_Q_GET, ct); 00051 00052 printf("TEST: get conntrack "); 00053 if (ret == -1) 00054 printf("(%d)(%s)\n", ret, strerror(errno)); 00055 else 00056 printf("(OK)\n"); 00057 00058 nfct_close(h); 00059 00060 ret == -1 ? exit(EXIT_FAILURE) : exit(EXIT_SUCCESS); 00061 }