1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <string.h> 4 #include <errno.h> 5 #include <arpa/inet.h> 6 7 #include <libnetfilter_conntrack/libnetfilter_conntrack.h> 8 #include <libnetfilter_conntrack/libnetfilter_conntrack_tcp.h> 9 10 int main(void) 11 { 12 int ret; 13 struct nfct_handle *h; 14 struct nf_conntrack *ct, *expected; 15 16 /* create master conntrack */ 17 ct = nfct_new(); 18 if (!ct) { 19 perror("nfct_new"); 20 return 0; 21 } 22 23 nfct_set_attr_u8(ct, ATTR_L3PROTO, AF_INET); 24 nfct_set_attr_u32(ct, ATTR_IPV4_SRC, inet_addr("1.1.1.1")); 25 nfct_set_attr_u32(ct, ATTR_IPV4_DST, inet_addr("2.2.2.2")); 26 27 nfct_set_attr_u8(ct, ATTR_L4PROTO, IPPROTO_TCP); 28 nfct_set_attr_u16(ct, ATTR_PORT_SRC, htons(20)); 29 nfct_set_attr_u16(ct, ATTR_PORT_DST, htons(10)); 30 31 nfct_setobjopt(ct, NFCT_SOPT_SETUP_REPLY); 32 33 nfct_set_attr_u8(ct, ATTR_TCP_STATE, TCP_CONNTRACK_SYN_SENT); 34 nfct_set_attr_u32(ct, ATTR_TIMEOUT, 100); 35 36 h = nfct_open(CONNTRACK, 0); 37 if (!h) { 38 perror("nfct_open"); 39 nfct_destroy(ct); 40 return -1; 41 } 42 43 ret = nfct_query(h, NFCT_Q_CREATE, ct); 44 45 printf("TEST: create conntrack "); 46 if (ret == -1) 47 printf("(%d)(%s)\n", ret, strerror(errno)); 48 else 49 printf("(OK)\n"); 50 51 nfct_destroy(ct); 52 53 if (ret == -1) 54 exit(EXIT_FAILURE); 55 56 /* setup confirmed conntrack */ 57 58 expected = nfct_new(); 59 if (!expected) { 60 perror("nfct_new"); 61 return 0; 62 } 63 64 nfct_set_attr_u8(ct, ATTR_L3PROTO, AF_INET); 65 nfct_set_attr_u32(ct, ATTR_IPV4_SRC, inet_addr("1.1.1.1")); 66 nfct_set_attr_u32(ct, ATTR_IPV4_DST, inet_addr("2.2.2.2")); 67 68 nfct_set_attr_u8(ct, ATTR_L4PROTO, IPPROTO_TCP); 69 nfct_set_attr_u16(ct, ATTR_PORT_SRC, htons(1024)); 70 nfct_set_attr_u16(ct, ATTR_PORT_DST, htons(1025)); 71 72 nfct_setobjopt(ct, NFCT_SOPT_SETUP_REPLY); 73 74 nfct_set_attr_u8(ct, ATTR_TCP_STATE, TCP_CONNTRACK_SYN_SENT); 75 nfct_set_attr_u32(ct, ATTR_TIMEOUT, 100); 76 77 /* my conntrack master is ... */ 78 79 nfct_set_attr_u8(ct, ATTR_MASTER_L3PROTO, AF_INET); 80 nfct_set_attr_u32(ct, ATTR_MASTER_IPV4_SRC, inet_addr("1.1.1.1")); 81 nfct_set_attr_u32(ct, ATTR_MASTER_IPV4_DST, inet_addr("2.2.2.2")); 82 83 nfct_set_attr_u8(ct, ATTR_MASTER_L4PROTO, IPPROTO_TCP); 84 nfct_set_attr_u16(ct, ATTR_MASTER_PORT_SRC, htons(20)); 85 nfct_set_attr_u16(ct, ATTR_MASTER_PORT_DST, htons(10)); 86 87 ret = nfct_query(h, NFCT_Q_CREATE, ct); 88 89 printf("TEST: create confirmed conntrack "); 90 if (ret == -1) 91 printf("(%d)(%s)\n", ret, strerror(errno)); 92 else 93 printf("(OK)\n"); 94 95 nfct_close(h); 96 97 nfct_destroy(expected); 98 99 ret == -1 ? exit(EXIT_FAILURE) : exit(EXIT_SUCCESS); 100 } 101
