发送arp包.docx

代码来自busybox,函数询问TEST_IP的mac地址。read_interface函数通过ioctl来获取接口interface相关信息，arpping用于发送arp数据包。也可以使用s = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ARP);则地址则变成了struct sockaddr_ll addr; 在arpping中调用以下函数，则也可以发送# include # include # include # include # include # include # include # include # include # include # include # include # include # include enum ARP_MSG_SIZE = 0x2a ; char * strncpy_IFNAMSIZ( char * dst, const char * src) # ifndef IFNAMSIZ enum IFNAMSIZ = 16 ; # endif return strncpy ( dst, src, IFNAMSIZ) ; struct arpMsg /* Ethernet header */ uint8_t h_dest 6 ; /* 00 destination ether addr */ uint8_t h_source 6 ; /* 06 source ether addr */ uint16_t h_proto; /* 0c packet type ID field */ /* ARP packet */ uint16_t htype; /* 0e hardware type (must be ARPHRD_ETHER) */ uint16_t ptype; /* 10 protocol type (must be ETH_P_IP) */ uint8_t hlen; /* 12 hardware address length (must be 6) */ uint8_t plen; /* 13 protocol address length (must be 4) */ uint16_t operation; /* 14 ARP opcode */ uint8_t sHaddr 6 ; /* 16 senders hardware address */ uint8_t sInaddr 4 ; /* 1c senders IP address */ uint8_t tHaddr 6 ; /* 20 targets hardware address */ uint8_t tInaddr 4 ; /* 26 targets IP address */ uint8_t pad 18 ; /* 2a pad for min. ethernet payload (60 bytes) */ PACKED; const int const_int_1 = 1; int setsockopt_broadcast( int fd) return setsockopt ( fd, SOL_SOCKET, SO_BROADCAST, & const_int_1, sizeof ( const_int_1) ) ; char * safe_strncpy( char * dst, const char * src, size_t size) if ( ! size) return dst; dst - - size = 0 ; return strncpy ( dst, src, size) ; int arpping( uint32_t test_ip, uint32_t from_ip, uint8_t * from_mac, const char * interface) int timeout_ms; int s; int rv = 1; /* no reply received yet */ struct sockaddr addr; /* for interface name */ struct arpMsg arp; s = socket ( PF_PACKET , SOCK_PACKET , htons ( ETH_P_ARP) ) ; if ( s = = - 1) perror ( raw_socket ) ; return - 1; if ( setsockopt_broadcast( s) = = - 1) perror ( cannot enable bcast on raw socket ) ; goto ret; /* send arp request */ memset ( & arp, 0, sizeof ( arp) ) ; memset ( arp. h_dest, 0xff, 6) ; /* MAC DA */ memcpy ( arp. h_source, from_mac, 6) ; /* MAC SA */ arp. h_proto = htons ( ETH_P_ARP) ; /* protocol type (Ethernet) */ arp. htype = htons ( ARPHRD_ETHER) ; /* hardware type */ arp. ptype = htons ( ETH_P_IP) ; /* protocol type (ARP message) */ arp. hlen = 6; /* hardware address length */ arp. plen = 4; /* protocol address length */ arp. operation = htons ( ARPOP_REQUEST) ; /* ARP op code */ memcpy ( arp. sHaddr, from_mac, 6) ; /* source hardware address */ memcpy ( arp. sInaddr, & from_ip, sizeof ( from_ip) ) ; /* source IP address */ /* tHaddr is zero-fiiled */ /* target hardware address */ memcpy ( arp. tInaddr, & test_ip, sizeof ( test_ip) ) ; /* target IP address */ memset ( & addr, 0, sizeof ( addr) ) ; safe_strncpy( addr. sa_data, interface, sizeof ( addr. sa_data) ) ; if ( sendto ( s, & arp, sizeof ( arp) , 0, & addr, sizeof ( addr) ) sin_addr. s_addr; printf ( ip of %s = %s n , interface, inet_ntoa( our_ip- sin_addr) ) ; if ( ifindex) if ( ioctl( fd, SIOCGIFINDEX , & ifr) ! = 0) close ( fd) ; return - 1; printf ( adapter index %d , ifr. ifr_ifindex) ; * ifindex = ifr. ifr_ifindex; if ( arp) if ( ioctl( fd, SIOCGIFHWADDR , & ifr) ! = 0) close ( fd) ; return - 1; memcpy ( arp, ifr. ifr_hwaddr. sa_data, 6) ; printf ( adapter hardware address %02x:%02x:%02x:%02x:%02x:%02xn , arp 0 , arp 1 , arp 2 , arp 3 , arp 4 , arp 5 ) ; close ( fd) ; return 0; int main( void ) uint32_t TEST_IP = inet_addr( 94 ) ; char interface = eth0 ; uint32_t ip; uint8_t mac 6 ; read_interface( interface, NULL , & ip, mac) ; while ( 1) arpping( TEST_IP, ip, mac, interface) ; sleep ( 1) ; return 0; 本文来自CSDN博客，转载请标明出处：/cybertan/archive/2010/10/20/5953102.aspx发送arp数据包 (2010-07-19 17:37) 分类： linux.applicaiton 1.arp发送#include #include #include #include #include #include #include #include #include #include #include #include #include #include enumARP_MSG_SIZE = 0x2a;char* strncpy_IFNAMSIZ(char *dst, const char *src)#ifndef IFNAMSIZenum IFNAMSIZ = 16 ;#endifreturn strncpy(dst, src, IFNAMSIZ);struct arpMsg /* Ethernet header */uint8_t h_dest6; /* 00 destination ether addr */uint8_t h_source6; /* 06 source ether addr */uint16_t h_proto; /* 0c packet type ID field */* ARP packet */uint16_t htype; /* 0e hardware type (must be ARPHRD_ETHER) */uint16_t ptype; /* 10 protocol type (must be ETH_P_IP) */uint8_t hlen; /* 12 hardware address length (must be 6) */uint8_t plen; /* 13 protocol address length (must be 4) */uint16_t operation; /* 14 ARP opcode */uint8_t sHaddr6; /* 16 senders hardware address */uint8_t sInaddr4; /* 1c senders IP address */uint8_t tHaddr6; /* 20 targets hardware address */uint8_t tInaddr4; /* 26 targets IP address */uint8_t pad18; /* 2a pad for min. ethernet payload (60 bytes) */ PACKED;const int const_int_1 = 1;int setsockopt_broadcast(int fd)return setsockopt(fd, SOL_SOCKET, SO_BROADCAST, &const_int_1, sizeof(const_int_1);char* safe_strncpy(char *dst, const char *src, size_t size)if (!size) return dst;dst-size = 0;return strncpy(dst, src, size);int arpping(uint32_t test_ip, uint32_t from_ip, uint8_t *from_mac, const char *interface)int timeout_ms;int s;int rv = 1; /* no reply received yet */struct sockaddr addr; /* for interface name */struct arpMsg arp;s = socket(PF_PACKET, SOCK_PACKET, htons(ETH_P_ARP);if (s = -1) perror(raw_socket);return -1;if (setsockopt_broadcast(s) = -1) perror(cannot enable bcast on raw socket);goto ret;/* send arp request */memset(&arp, 0, sizeof(arp);memset(arp.h_dest, 0xff, 6); /* MAC DA */memcpy(arp.h_source, from_mac, 6); /* MAC SA */arp.h_proto = htons(ETH_P_ARP); /* protocol type (Ethernet) */arp.htype = htons(ARPHRD_ETHER); /* hardware type */arp.ptype = htons(ETH_P_IP); /* protocol type (ARP message) */arp.hlen = 6; /* hardware address length */arp.plen = 4; /* protocol address length */arp.operation = htons(ARPOP_REQUEST); /* ARP op code */memcpy(arp.sHaddr, from_mac, 6); /* source hardware address */memcpy(arp.sInaddr, &from_ip, sizeof(from_ip); /* source IP address */* tHaddr is zero-fiiled */ /* target hardware address */memcpy(arp.tInaddr, &test_ip, sizeof(test_ip); /* target IP address */memset(&addr, 0, sizeof(addr);safe_strncpy(addr.sa_data, interface, sizeof(addr.sa_data);if (sendto(s, &arp, sizeof(arp), 0, &addr, sizeof(addr) sin_addr.s_addr;printf(ip of %s = %s n, interface, inet_ntoa(our_ip-sin_addr);if (ifindex) if (ioctl(fd, SIOCGIFINDEX, &ifr) != 0) close(fd);return -1;printf(adapter index %d, ifr.ifr_ifindex);*ifindex = ifr.ifr_ifindex;if (arp) if (ioctl(fd, SIOCGIFHWADDR, &ifr) != 0) close(fd);return -1;memcpy(arp, ifr.ifr_hwaddr.sa_data, 6);printf(adapter hardware address %02x:%02x:%02x:%02x:%02x:%02xn,arp0, arp1, arp2, arp3, arp4, arp5);close(fd);return 0;int main(void)uint32_t TEST_IP = inet_addr(94);char interface=eth0;uint32_t ip;uint8_t mac6;read_interface(interface, NULL, &ip, mac); while(1)arpping(TE