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pplayer.c
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/*
* Author: BaiYan
* Date: 2013-05-09 15:32:00
* Version: 0.6
* This is my last modified version of tomahawk in Neusoft.
* Good Luck.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <signal.h>
#include <assert.h>
#include <stdint.h>
#include <fcntl.h>
#include <linux/if_packet.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <linux/if_ether.h>
#include <netinet/in.h>
#ifndef __FAVOR_BSD
#define __FAVOR_BSD
#endif
#include <netinet/ip.h>
#include <netinet/ip6.h>
#include <netinet/tcp.h>
#include <netinet/udp.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/select.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include "pcap.h"
#include "pcap-int.h"
#include "pplayer.h"
/* ************** Global Variables ********************* */
uint64_t clicksPerUSec;
Interface interface;
File_info my_file;
Trace *t;
/* ************** Functions **************************** */
inline unsigned long long int Clicks()
{
unsigned long long int x;
__asm__ volatile (".byte 0x0f, 0x31" : "=A" (x));
return x;
}
void Calibrate(void)
{
uint64_t x1, x2;
struct timeval start, end;
x1 = Clicks();
gettimeofday(&start, NULL);
usleep(10000);
x2 = Clicks();
gettimeofday(&end, NULL);
end.tv_sec -= start.tv_sec;
end.tv_usec -= start.tv_usec;
clicksPerUSec = (x2 - x1)/(end.tv_sec*1000000 + end.tv_usec);
DBG("start:%llu end:%llu start-end:%llu dt_usec:%lu", x1, x2, x2-x1, (end.tv_sec*1000000 + end.tv_usec));
}
double ReadSysClock ()
{
return Clicks() / clicksPerUSec / 1000000.0;
}
uint16_t csum(uint8_t *buf, int32_t size)
{
uint32_t sum = 0;
while (size > 1) {
sum += *(uint16_t *)buf;
buf += 2;
size -= 2;
}
if (size > 0) {
sum += *(uint8_t *)buf;
}
sum = (sum >> 16) + (sum & 0xffff);
sum += (sum >> 16);
return (uint16_t)(~sum);
}
uint16_t ip_csum_as(uint8_t *iph, uint32_t ihl)
{
/* ihl = iph->ihl */
uint32_t sum;
__asm__ __volatile__(
"movl (%1), %0 ;\n"
"subl $4, %2 ;\n"
"jbe 2f ;\n"
"addl 4(%1), %0 ;\n"
"adcl 8(%1), %0 ;\n"
"adcl 12(%1), %0 ;\n"
"1: adcl 16(%1), %0 ;\n"
"lea 4(%1), %1 ;\n"
"decl %2 ;\n"
"jne 1b ;\n"
"adcl $0, %0 ;\n"
"movl %0, %2 ;\n"
"shrl $16, %0 ;\n"
"addw %w2, %w0 ;\n"
"adcl $0, %0 ;\n"
"notl %0 ;\n"
"2: ;\n"
: "=r" (sum), "=r" (iph), "=r" (ihl)
: "1" (iph), "2" (ihl)
: "memory");
return(sum);
}
#define ASM 1
inline void ip_csum(struct iphdr *iph)
{
uint16_t sh;
iph->check = 0;
#ifdef ASM
sh = ip_csum_as((uint8_t *)iph, iph->ihl);
#else
sh = csum((uint8_t *)iph, iph->ihl << 2);
#endif
iph->check = sh;
}
void tcp_csum(struct iphdr *iph, uint8_t *data)
{
int tcp_len = 0;
Pesudo_hdr *piph = NULL;
struct tcphdr *tcph = NULL;
static uint8_t box[16000];
tcp_len = ntohs(iph->tot_len) - (iph->ihl << 2);
if (tcp_len < 20) {
return;
}
piph = (Pesudo_hdr *)box;
piph->saddr = iph->saddr;
piph->daddr = iph->daddr;
piph->zero = 0;
piph->protocol = 6;
piph->proto_len = htons(tcp_len);
tcph = (struct tcphdr *)data;
tcph->th_sum = 0;
if (tcp_len % 2 == 1) {
memcpy(box + 12, data, tcp_len);
box[12 + tcp_len] = 0;
tcph->th_sum = csum(box, 12 + tcp_len + 1);
} else {
memcpy(box + 12, data, tcp_len);
tcph->th_sum = csum(box, 12 + tcp_len);
}
}
void tcp_csum6(struct ip6_hdr *iph6, uint8_t *data)
{
int tcp_len = 0;
struct tcphdr *tcph = NULL;
Pesudo_hdr6 *piph6 = NULL;
static uint8_t box[16000];
tcp_len = ntohs(iph6->ip6_plen);
piph6 = (Pesudo_hdr6 *)box;
memcpy(piph6->sv6, &iph6->ip6_src, 16);
memcpy(piph6->dv6, &iph6->ip6_dst, 16);
piph6->proto_len = htonl(tcp_len);
piph6->zero_with_nxt_hdr = htonl(0x0 | IPPROTO_TCP);
tcph = (struct tcphdr *)data;
tcph->th_sum = 0;
if (tcp_len % 2 == 1) {
memcpy(box + sizeof(Pesudo_hdr6), data, tcp_len);
box[sizeof(Pesudo_hdr6) + tcp_len] = 0;
tcph->th_sum = csum(box, sizeof(Pesudo_hdr6) + tcp_len + 1);
} else {
memcpy(box + sizeof(Pesudo_hdr6), data, tcp_len);
tcph->th_sum = csum(box, sizeof(Pesudo_hdr6) + tcp_len);
}
}
void udp_csum(struct iphdr *iph, uint8_t *data)
{
int udplen = 0;
Pesudo_hdr *piph = NULL;
struct udphdr *udph = NULL;
static uint8_t box[16000];
udplen = ntohs(iph->tot_len) - (iph->ihl << 2);
if (udplen < 20) {
return;
}
piph = (Pesudo_hdr *)box;
piph->saddr = iph->saddr;
piph->daddr = iph->daddr;
piph->zero = 0;
piph->protocol = 17;
piph->proto_len = htons(udplen);
udph = (struct udphdr *)data;
udph->uh_sum = 0;
if (udplen % 2 == 1) {
memcpy(box + sizeof(Pesudo_hdr), data, udplen);
box[sizeof(Pesudo_hdr) + udplen] = 0;
udph->uh_sum = csum(box, sizeof(Pesudo_hdr) + udplen + 1);
} else {
memcpy(box + sizeof(Pesudo_hdr), data, udplen);
udph->uh_sum = csum(box, sizeof(Pesudo_hdr) + udplen);
}
}
void udp_csum6(struct ip6_hdr *iph6, uint8_t *data)
{
int udp_len = 0;
struct udphdr *udph = NULL;
Pesudo_hdr6 *piph6 = NULL;
static uint8_t box[16000];
udp_len = ntohs(iph6->ip6_plen);
piph6 = (Pesudo_hdr6 *)box;
memcpy(piph6->sv6, &iph6->ip6_src, 16);
memcpy(piph6->dv6, &iph6->ip6_dst, 16);
piph6->proto_len = htonl(udp_len);
piph6->zero_with_nxt_hdr = htonl(0x0 | IPPROTO_UDP);
udph = (struct udphdr *)data;
udph->uh_sum = 0;
if(udp_len % 2 == 1) {
memcpy(box + sizeof(Pesudo_hdr6), data, udp_len);
box[sizeof(Pesudo_hdr6) + udp_len] = 0;
udph->uh_sum = csum(box, sizeof(Pesudo_hdr6) + udp_len + 1);
} else {
memcpy(box + sizeof(Pesudo_hdr6), data, udp_len);
udph->uh_sum = csum(box, sizeof(Pesudo_hdr6) + udp_len);
}
}
inline uint16_t NewChecksum (uint16_t check, uint32_t old, uint32_t new)
{
uint32_t m3, b, c, d, e;
uint16_t a;
a = ntohs(check);
a = ~a;
old = ntohl(old);
old = ~old;
b = old >> 16;
c = old & 0xffff;
new = ntohl(new);
d = new >> 16;
e = new & 0xffff;
m3 = a + b + c + d + e;
m3 = (m3 >> 16) + (m3 & 0xffff);
m3 = (m3 >> 16) + (m3 & 0xffff);
check = ~m3;
return htons(check);
}
uint32_t Reverse(uint32_t x)
{
x = ( (x & 0x55555555) << 1 ) | ( (x >> 1) & 0x55555555 );
x = ( (x & 0x33333333) << 2 ) | ( (x >> 2) & 0x33333333 );
x = ( (x & 0x0F0F0F0F) << 4 ) | ( (x >> 4) & 0x0F0F0F0F );
x = (x << 24) | ((x & 0xFF00) << 8) |
((x >> 8) & 0xFF00) | (x >> 24);
return x;
}
uint32_t CRC32(uint8_t *message, int32_t msgLength)
{
int32_t i, j;
uint32_t byte, crc;
i = 0;
crc = 0xFFFFFFFF;
while (i < msgLength) {
byte = message[i]; // Get next byte.
byte = Reverse(byte); // 32-bit reversal.
for (j = 0; j <= 7; j++) { // Do eight times.
if ((int)(crc ^ byte) < 0)
crc = (crc << 1) ^ 0x04C11DB7;
else crc = crc << 1;
byte = byte << 1; // Ready next msg bit.
}
i = i + 1;
}
return Reverse(~crc);
}
int32_t parseEtherAddr(uint8_t *ether, uint8_t *mac)
{
int32_t i = 0;
uint8_t *temp;
while (*ether != '\0' && i<6) {
temp = ether;
while (*ether != '\0' && *ether != ':') {
ether++;
}
if (*ether == ':') {
ether++;
}
mac[i++] = (u_char)strtol((const char *)temp, NULL, 16);
}
return (i == 6);
}
int32_t get_interface_info(char* name)
{
FILE *fp = NULL;
char buff[256],*p = NULL;
char* eth1name="device1:";
char* eth2name="device2:";
char* eth1ip="device1ip:";
char* eth2ip="device2ip:";
char* device1nat="device1nat:";
char* device2nat="device2nat:";
char* v4tov61 = "device1-4to6:";
char* v4tov62 = "device2-4to6:";
char* fwmac1="fwmac1:";
char* fwmac2 = "fwmac2:";
if (!(fp=fopen(name, "r"))) {
DBG("call fopen profile failed! %s\n", strerror(errno));
return -1;
}
for (;;) {
if (!fgets(buff,255,fp)) {
break;
}
p = buff;
//滤除空格和制表符
while (*p==32 || *p==9) {
p++;
}
/*注释或回车符*/
if (!*p || *p=='#' || *p==';' || ( *p=='/' && *(p+1)=='/') || *p==13 || *p==10 ) {
continue;
}
if (p[strlen(p) - 1] == '\n') {
p[strlen(p) - 1] = '\0';
}
if (!memcmp(p, eth1name, 8)) {
memcpy(interface.device1_name, p+8, 4);
continue;
}
if (!memcmp(p, eth2name, 8)) {
memcpy(interface.device2_name, p+8, 4);
continue;
}
if (!memcmp(p, eth1ip, 10)) {
memcpy(interface.device1_ip_str, p+10, strlen(p)-10);
continue;
}
if (!memcmp(p, eth2ip, 10)) {
memcpy(interface.device2_ip_str, p+10, strlen(p)-10);
continue;
}
if (!memcmp(p, device1nat, 11)) {
memcpy(interface.device1nat_ip_str, p+11, strlen(p)-11);
continue;
}
if (!memcmp(p, device2nat, 11)) {
memcpy(interface.device2nat_ip_str, p+11, strlen(p)-11);
continue;
}
if (!memcmp(p, v4tov61, 13)) {
memcpy(interface.device1_4to6_str, p+13, strlen(p)-13);
continue;
}
if (!memcmp(p, v4tov62, 13)) {
memcpy(interface.device2_4to6_str, p+13, strlen(p)-13);
continue;
}
if (!memcmp(p, fwmac1, 7)) {
memcpy(interface.fw_mac1_str, p+7, strlen(p)-7);
continue;
}
if (!memcmp(p, fwmac2, 7)) {
memcpy(interface.fw_mac2_str, p+7, strlen(p)-7);
continue;
}
}
if (my_file.pcap_version == 4) {
if (inet_pton(AF_INET, (const char *)interface.device1_ip_str, &interface.sv4) <= 0) {
DBG("illegal ip address %s in profile\n", interface.device1_ip_str);
return -1;
}
if (inet_pton(AF_INET, (const char *)interface.device2_ip_str, &interface.dv4) <= 0) {
DBG("illegal ip address %s in profile\n", interface.device1_ip_str);
return -1;
}
if (inet_pton(AF_INET, (const char *)interface.device1nat_ip_str, &interface.device1nat4) <= 0) {
DBG("illegal ip address %s in profile\n", interface.device1nat_ip_str);
return -1;
}
if (inet_pton(AF_INET, (const char *)interface.device2nat_ip_str, &interface.device2nat4) <= 0) {
DBG("illegal ip address %s in profile\n", interface.device2nat_ip_str);
return -1;
}
if (my_file.v4tov6) {
if (inet_pton(AF_INET6, (const char *)interface.device1_4to6_str, &interface.device1_4to6) <= 0) {
DBG("illegal ip address %s in profile\n", interface.device1_4to6_str);
return -1;
}
if (inet_pton(AF_INET6, (const char *)interface.device2_4to6_str, &interface.device2_4to6) <= 0) {
DBG("illegal ip address %s in profile\n", interface.device2_4to6_str);
return -1;
}
}
} else {
if (inet_pton(AF_INET6, (const char *)interface.device1_ip_str, interface.sv6) <= 0) {
DBG("illegal ip address %s in profile\n", interface.device1_ip_str);
return -1;
}
if (inet_pton(AF_INET6, (const char *)interface.device2_ip_str, interface.dv6) <= 0) {
DBG("illegal ip address %s in profile\n", interface.device2_ip_str);
return -1;
}
if (inet_pton(AF_INET6, (const char *)interface.device1nat_ip_str, interface.device1nat6) <= 0) {
DBG("illegal ip address %s in profile\n", interface.device1nat_ip_str);
return -1;
}
if (inet_pton(AF_INET6, (const char *)interface.device2nat_ip_str, interface.device2nat6) <= 0) {
DBG("illegal ip address %s in profile\n", interface.device2nat_ip_str);
return -1;
}
}
if (parseEtherAddr(interface.fw_mac1_str, interface.fw_mac1) != 1) {
DBG("%s: error fwmac1 in profile %s\n", my_file.name, interface.fw_mac1_str);
return -1;
}
if (parseEtherAddr(interface.fw_mac2_str, interface.fw_mac2) != 1) {
DBG("%s: error fwmac2 in profile %s\n", my_file.name, interface.fw_mac2_str);
return -1;
}
MSG("device1 name: %s\ndevice2 name: %s\n", interface.device1_name, interface.device2_name);
MSG("device1 ip: %s\ndevice2 ip: %s\ndevice1nat ip: %s\ndevice2nat ip: %s\n",
interface.device1_ip_str,
interface.device2_ip_str,
interface.device1nat_ip_str,
interface.device2nat_ip_str);
MSG("device1-4to6: %s\ndevice2-4to6: %s\n",
interface.device1_4to6_str, interface.device2_4to6_str);
MSG("fwmac1: %s\nfwmac2: %s\n", interface.fw_mac1_str, interface.fw_mac2_str);
if (*((int *)(&interface.device1nat4))) {
my_file.device1_in_nat = 1;
MSG("device1 is in nat\n");
}
if (*((int *)(&interface.device2nat4))) {
my_file.device2_in_nat = 1;
MSG("device2 is in nat\n");
}
#ifdef DEBUG
char addr[46];
if (my_file.pcap_version == 4) {
DBG("device1 ip %s\n", inet_ntop(AF_INET, &interface.sv4, addr, 46));
DBG("device2 ip %s\n", inet_ntop(AF_INET, &interface.dv4, addr, 46));
DBG("device1nat ip %s\n", inet_ntop(AF_INET, &interface.device1nat4, addr, 46));
DBG("device2nat ip %s\n", inet_ntop(AF_INET, &interface.device2nat4, addr, 46));
DBG("device1-4to6 ip %s\n", inet_ntop(AF_INET6, &interface.device1_4to6, addr, 46));
DBG("device2-4to6 ip %s\n", inet_ntop(AF_INET6, &interface.device2_4to6, addr, 46));
} else {
DBG("device1 ip %s\n", inet_ntop(AF_INET6, &interface.sv6, addr, 46));
DBG("device2 ip %s\n", inet_ntop(AF_INET6, &interface.dv6, addr, 46));
DBG("device1nat ip %s\n", inet_ntop(AF_INET6, &interface.device1nat6, addr, 46));
DBG("device2nat ip %s\n", inet_ntop(AF_INET6, &interface.device2nat6, addr, 46));
}
DBG("fw_mac1:");PRINT_BYTES(interface.fw_mac1, 6);
DBG("fw_mac2:");PRINT_BYTES(interface.fw_mac2, 6);
#endif
fclose(fp);
return 0;
}
int get_if_flags(int if_fd, char *eth, int *flags)
{
struct ifreq ifreq;
memset(&ifreq, 0, sizeof(ifreq));
strncpy(ifreq.ifr_name, eth, IFNAMSIZ - 1);
if (0 > ioctl(if_fd, SIOCGIFFLAGS, &ifreq)) {
perror("SIOCGIFFLAGS ioctl err: ");
return -1;
}
*flags = ifreq.ifr_ifru.ifru_flags;
return 0;
}
int set_if_flags(int if_fd, char *eth, int flags)
{
struct ifreq ifreq;
memset(&ifreq, 0, sizeof(ifreq));
strncpy(ifreq.ifr_name, eth, IFNAMSIZ - 1);
ifreq.ifr_ifru.ifru_flags = flags;
if (0 > ioctl(if_fd, SIOCSIFFLAGS, &ifreq)) {
perror("SIOCSIFFALGS ioctl err: ");
return -1;
}
return 0;
}
int add_if_flags(int if_fd, char *eth, int bit)
{
int flags;
struct ifreq ifreq;
memset(&ifreq, 0, sizeof(ifreq));
strncpy(ifreq.ifr_name, eth, IFNAMSIZ - 1);
if (0 > ioctl(if_fd, SIOCGIFFLAGS, &ifreq)) {
perror("SIOCGIFFLAGS ioctl err: ");
return -1;
}
flags = ifreq.ifr_ifru.ifru_flags;
flags |= bit;
ifreq.ifr_ifru.ifru_flags = flags;
if (0 > ioctl(if_fd, SIOCSIFFLAGS, &ifreq)) {
perror("SIOCSIFFALGS ioctl err: ");
return -1;
}
return 0;
}
int sub_if_flags(int if_fd, char *eth, int bit)
{
int flags;
struct ifreq ifreq;
memset(&ifreq, 0, sizeof(ifreq));
strncpy(ifreq.ifr_name, eth, IFNAMSIZ - 1);
if (0 > ioctl(if_fd, SIOCGIFFLAGS, &ifreq)) {
perror("SIOCGIFFLAGS ioctl err: ");
return -1;
}
flags = ifreq.ifr_ifru.ifru_flags;
flags &= (~bit);
ifreq.ifr_ifru.ifru_flags = flags;
if (0 > ioctl(if_fd, SIOCSIFFLAGS, &ifreq)) {
perror("SIOCSIFFALGS ioctl err: ");
return -1;
}
return 0;
}
int32_t OpenInterface()
{
struct ifreq ifr1;
struct ifreq ifr2;
if ((interface.socket1 = socket(PF_PACKET, SOCK_RAW, IPPROTO_RAW)) < 0 ||
(interface.socket2 = socket(PF_PACKET, SOCK_RAW, IPPROTO_RAW)) < 0) {
DBG("call socket failed! %s", strerror(errno));
return -1;
}
DBG("socket1[%d] socket2[%d]\n", interface.socket1, interface.socket2);
/*
* Get device number
*/
memset(&ifr1, 0, sizeof(struct ifreq));
memset(&ifr2, 0, sizeof(struct ifreq));
strncpy(ifr1.ifr_name, (const char *)interface.device1_name, sizeof(ifr1.ifr_name));
strncpy(ifr2.ifr_name, (const char *)interface.device2_name, sizeof(ifr2.ifr_name));
DBG("ifr1.name is %s\n", ifr1.ifr_name);
DBG("ifr2.name is %s\n", ifr2.ifr_name);
if (ioctl(interface.socket1, SIOCGIFINDEX, &ifr1) < 0 ||
ioctl(interface.socket2, SIOCGIFINDEX, &ifr2) < 0) {
DBG("call ioctl failed! %s", strerror(errno));
return -1;
}
memset(&interface.sa1, 0, sizeof(interface.sa1));
interface.sa1.sll_family = AF_PACKET;
interface.sa1.sll_ifindex = ifr1.ifr_ifindex;
interface.sa1.sll_protocol = htons(ETH_P_ALL);
memset(&interface.sa2, 0, sizeof(interface.sa2));
interface.sa2.sll_family = AF_PACKET;
interface.sa2.sll_ifindex = ifr2.ifr_ifindex;
interface.sa2.sll_protocol = htons(ETH_P_ALL);
/*
* Bind the socket to the device
*/
if (bind(interface.socket1, (struct sockaddr *)&interface.sa1, sizeof(struct sockaddr_ll)) < 0 ||
bind(interface.socket2, (struct sockaddr *)&interface.sa2, sizeof(struct sockaddr_ll)) < 0) {
DBG("call bind failed! %s", strerror(errno));
return -1;
}
ioctl(interface.socket1, SIOCGIFHWADDR, &ifr1);
ioctl(interface.socket2, SIOCGIFHWADDR, &ifr2);
memcpy(interface.device1_mac, &ifr1.ifr_hwaddr.sa_data, 6);
memcpy(interface.device2_mac, &ifr2.ifr_hwaddr.sa_data, 6);
DBG("device1_mac:");PRINT_BYTES(interface.device1_mac, 6);
DBG("device2_mac:");PRINT_BYTES(interface.device2_mac, 6);
get_if_flags(interface.socket1, (char *)interface.device1_name, &interface.socket1_if_flags);
get_if_flags(interface.socket1, (char *)interface.device2_name, &interface.socket2_if_flags);
add_if_flags(interface.socket1, (char *)interface.device1_name, IFF_PROMISC);
add_if_flags(interface.socket1, (char *)interface.device2_name, IFF_PROMISC);
return 0;
}
int CloseInterface()
{
set_if_flags(interface.socket1, (char *)interface.device1_name, interface.socket1_if_flags);
set_if_flags(interface.socket1, (char *)interface.device2_name, interface.socket2_if_flags);
return 0;
}
#ifdef DEBUG
void PrintTraceInfo(Trace *trace)
{
Flow *flow = NULL;
Packet *p = NULL;
int i = 0;
int j = 0;
MSG("------------------- Trace -------------------\n");
MSG("flow capacity [%d]\n", trace->flow_cap);
MSG("flow number [%d]\n", trace->flow_num);
MSG("max sending flow id [%d]\n", trace->max_sending_flow_id);
MSG("max received flow id1 [%d]\n", trace->max_recv_flow_id1);
MSG("max received flow id2 [%d]\n", trace->max_recv_flow_id2);
MSG("total packet number [%d]\n", trace->total_pkt_num);
MSG("total sent packet number [%d]\n", trace->total_sent_num);
MSG("total received packet number[%d]\n", trace->total_recv_num);
for(; i < trace->flow_num; ++i) {
flow = &trace->flow[i];
MSG("------------------- Flow [ %d ] -------------------\n", i + 1);
MSG("packet capacity [%d]\n", flow->pkt_cap);
MSG("packet number [%d]\n", flow->pkt_num);
MSG("max sent packet id [%d]\n", flow->max_sent_id);
MSG("max received packet id1 [%d]\n", flow->max_recv_id1);
MSG("max received packet id2 [%d]\n", flow->max_recv_id2);
MSG("sent packet number [%d]\n", flow->sent_num);
MSG("received packet number [%d]\n", flow->recv_num);
MSG("received packet map:\n");
PRINT_BYTES(flow->recv_flag, flow->pkt_num);
printf("my_file.version = %d\n", my_file.pcap_version);
if (my_file.pcap_version == 4) {
MSG("addr1 [%s]\n", inet_ntoa(*(struct in_addr *)(&flow->sv4)));
MSG("addr2 [%s]\n", inet_ntoa(*(struct in_addr *)(&flow->dv4)));
} else {
uint8_t addr[46];
MSG("addr1 [%s]\n", inet_ntop(AF_INET6, flow->sv6, (char *)addr, 46));
MSG("addr2 [%s]\n", inet_ntop(AF_INET6, flow->dv6, (char *)addr, 46));
}
for(j = 0; j < flow->pkt_num; ++j) {
p = &flow->pkt[j];
MSG("------------------- Packet [ %d ] -------------------\n", p->id);
MSG("send interface [%s]\n", p->interface == 1 ? interface.device1_name : interface.device2_name);
MSG("send time sec[%u] usec[%u]\n", p->sec, p->usec);
MSG("buffer len [%d]\n", p->len);
PRINT_BYTES(p->buf, p->len);
}
}
}
#endif
int32_t FindFlowByAddr(Trace *trace, ip_addr_t saddr, ip_addr_t daddr)
{
int index = 0;
Flow *flow = NULL;
if (my_file.pcap_version == 4) {
while (index < trace->flow_num) {
flow = &trace->flow[index];
if ((flow->sv4 == saddr.ipv4 && flow->dv4 == daddr.ipv4) ||
(flow->sv4 == daddr.ipv4 && flow->dv4 == saddr.ipv4)) {
return index;
}
++index;
}
} else {
while (index < trace->flow_num) {
flow = &trace->flow[index];
if ((!memcmp(flow->sv6, saddr.ipv6, 16) && !memcmp(flow->dv6, daddr.ipv6, 16)) ||
(!memcmp(flow->sv6, daddr.ipv6, 16) && !memcmp(flow->dv6, saddr.ipv6, 16))) {
return index;
}
++index;
}
}
return -1;
}
Flow *CreateNewFlow(Trace *trace, ip_addr_t saddr, ip_addr_t daddr)
{
assert(trace);
int index = 0;
Flow *flow = NULL;
if (trace->flow_cap == 0) {
trace->flow_cap = 16;
trace->flow = calloc(16, sizeof(Flow));
} else if(trace->flow_num == trace->flow_cap) {
trace->flow_cap += 16;
trace->flow = realloc(trace->flow, (trace->flow_cap) * sizeof(Flow));
}
index = trace->flow_num;
flow = &trace->flow[index];
memset(flow, 0, sizeof(Flow));
flow->max_recv_id1 = -1;
flow->max_recv_id2 = -1;
flow->max_sent_id = -1;
memcpy(&flow->src, &saddr, 16);
memcpy(&flow->dst, &daddr, 16);
trace->flow_num++;
return flow;
}
void makeup_v4_to_v6(struct iphdr *iph, struct ip6_hdr *iph6)
{
struct ether_header *ph = (struct ether_header *)(((uint8_t *)iph6) - ETH_HLEN);
int hlen = (iph->ihl << 2);
int plen = ntohs(iph->tot_len) - hlen;
if (plen < 0) {
return;
}
iph6->ip6_flow = htonl(0x60000000);
iph6->ip6_plen = htons(plen);
iph6->ip6_nxt = iph->protocol;
iph6->ip6_hlim = iph->ttl;
ph->ether_type = htons(ETH_P_IPV6);
memcpy((char *)iph6 + 40, (char *)iph + hlen, plen);
}
void LoadPacket_v4 (const struct pcap_pkthdr *pcap_hdr, Trace *trace, Flow *flow,
const u_char *data)
{
Packet *pkt = NULL;
struct ether_header *ph = NULL;
struct iphdr *iph = NULL;
struct ip6_hdr *ip6h = NULL;
struct tcphdr *tcph = NULL;
struct udphdr *udph = NULL;
int offset;
//printf("load packet len %d\n", pcap_hdr->caplen);
if (flow->pkt_cap == 0) {
flow->pkt_cap = 128;
flow->pkt = calloc(128, sizeof(Packet));
} else if (flow->pkt_num == flow->pkt_cap) {
flow->pkt_cap += 128;
flow->pkt = realloc(flow->pkt, (flow->pkt_cap) * sizeof(Packet));
}
pkt = &flow->pkt[flow->pkt_num];
iph = (struct iphdr *)(data + ETH_HLEN);
offset = (iph->ihl << 2) + ETH_HLEN;
if (iph->protocol == IPPROTO_TCP) {
tcph = (struct tcphdr *)(data + offset);
if (my_file.port && htons(my_file.port) != tcph->th_dport && htons(my_file.port) != tcph->th_sport) {
return;
}
} else if (iph->protocol == IPPROTO_UDP) {
udph = (struct udphdr *)(data + offset);
if (my_file.port && htons(my_file.port) != udph->uh_dport && htons(my_file.port) != udph->uh_sport) {
return;
}
}
if (!my_file.v4tov6) {
pkt->len = pcap_hdr->caplen;
pkt->buf = malloc(pkt->len + ETHER_CRC_LEN);
memcpy(pkt->buf, data, pkt->len);
iph = (struct iphdr *)(pkt->buf + ETH_HLEN);
if (iph->saddr == flow->sv4) {
pkt->interface = 1;
} else {
pkt->interface = 2;
}
if (my_file.alter_ip) {
if (pkt->interface == 1) {
if (my_file.device2_in_nat) {
iph->saddr = interface.sv4;
iph->daddr = interface.device2nat4;
} else {
iph->saddr = interface.sv4;
iph->daddr = interface.dv4;
}
} else {
if (my_file.device1_in_nat) {
iph->daddr = interface.device1nat4;
iph->saddr = interface.dv4;
} else {
iph->daddr = interface.sv4;
iph->saddr = interface.dv4;
}
}
}
ip_csum(iph);
if ((iph->frag_off & htons(0x1fff)) == 0) {
if (iph->protocol == IPPROTO_TCP) {
tcph = (struct tcphdr *)(pkt->buf + offset);
tcp_csum(iph, (uint8_t *)tcph);
} else if (iph->protocol == IPPROTO_UDP) {
udph = (struct udphdr *)(pkt->buf + offset);
if (udph->uh_sum != 0) {
udp_csum(iph, (uint8_t *)udph);
}
}
}
} else {
pkt->len = pcap_hdr->caplen + 20;
pkt->buf = malloc(pkt->len + ETHER_CRC_LEN);
memcpy(pkt->buf, data, ETH_HLEN);
ip6h = (struct ip6_hdr *)(pkt->buf + ETH_HLEN);
makeup_v4_to_v6(iph, ip6h);
if (iph->saddr == flow->sv4) {
memcpy(&ip6h->ip6_src, interface.device1_4to6.ipv6, 16);
memcpy(&ip6h->ip6_dst, interface.device2_4to6.ipv6, 16);
pkt->interface = 1;
} else {
memcpy(&ip6h->ip6_src, interface.device2_4to6.ipv6, 16);
memcpy(&ip6h->ip6_dst, interface.device1_4to6.ipv6, 16);
pkt->interface = 2;
}
offset = 40 + ETH_HLEN;
if (ip6h->ip6_nxt == IPPROTO_TCP) {
tcp_csum6(ip6h, pkt->buf + offset);
} else if (ip6h->ip6_nxt == IPPROTO_UDP) {
udp_csum6(ip6h, pkt->buf + offset);
}
}
pkt->payload_offset = offset;
/*
* Rewrite the mac addresses on the packet.
*/
if (my_file.alter_mac) {
ph = (struct ether_header *)pkt->buf;
if (pkt->interface == 1) {
ph->ether_shost[0] = interface.device1_mac[0];
ph->ether_shost[1] = interface.device1_mac[1];
ph->ether_shost[2] = interface.device1_mac[2];
ph->ether_shost[3] = interface.device1_mac[3];
ph->ether_shost[4] = interface.device1_mac[4];
ph->ether_shost[5] = interface.device1_mac[5];
ph->ether_dhost[0] = interface.fw_mac1[0];
ph->ether_dhost[1] = interface.fw_mac1[1];
ph->ether_dhost[2] = interface.fw_mac1[2];
ph->ether_dhost[3] = interface.fw_mac1[3];
ph->ether_dhost[4] = interface.fw_mac1[4];
ph->ether_dhost[5] = interface.fw_mac1[5];
} else {
ph->ether_dhost[0] = interface.fw_mac2[0];
ph->ether_dhost[1] = interface.fw_mac2[1];
ph->ether_dhost[2] = interface.fw_mac2[2];
ph->ether_dhost[3] = interface.fw_mac2[3];
ph->ether_dhost[4] = interface.fw_mac2[4];
ph->ether_dhost[5] = interface.fw_mac2[5];
ph->ether_shost[0] = interface.device2_mac[0];
ph->ether_shost[1] = interface.device2_mac[1];
ph->ether_shost[2] = interface.device2_mac[2];
ph->ether_shost[3] = interface.device2_mac[3];
ph->ether_shost[4] = interface.device2_mac[4];
ph->ether_shost[5] = interface.device2_mac[5];
}
}
/* Compute the FCS on the Ethernet Frame
* Some people say the hardare should do this, but it does not seem to.
* Also for packets > 1510, the WriteInterface dies with a message too long error
*/
/*
* This section actually calculates the FCS, but it's not currently
* working correctly, so I've commented it out. The CRC32 function
* needs to be verified.
*/
/*
if ( pkt->len <= 15 + ETH_HLEN ) {
uint32_t newFCS = CRC32( pkt->buf , pkt->len );
memcpy(pkt->buf + pkt->len , &newFCS , ETHER_CRC_LEN);
}
*/
pkt->id = trace->total_pkt_num++;
flow->pkt_num++;
}
void LoadPacket_v6(const struct pcap_pkthdr *pcap_hdr, Trace *trace, Flow *flow,
const u_char * data)
{
Packet *pkt = NULL;
struct ether_header *ph = NULL;
struct ip6_hdr *iph6 = NULL;
struct tcphdr *tcph = NULL;
struct udphdr *udph = NULL;
int offset;
//printf("load packet len %d\n", pcap_hdr->caplen);
if (flow->pkt_cap == 0) {
flow->pkt_cap = 128;
flow->pkt = calloc(128, sizeof(Packet));
} else if (flow->pkt_num == flow->pkt_cap) {
flow->pkt_cap += 128;
flow->pkt = realloc(flow->pkt, (flow->pkt_cap) * sizeof(Packet));
}
pkt = &flow->pkt[flow->pkt_num];
iph6 = (struct ip6_hdr *)(data + ETH_HLEN);
offset = 40 + ETH_HLEN;
if (iph6->ip6_nxt == IPPROTO_TCP) {
tcph = (struct tcphdr *)(data + offset);
if (my_file.port && htons(my_file.port) != tcph->th_dport && htons(my_file.port) != tcph->th_sport) {
return;
}
} else if (iph6->ip6_nxt == IPPROTO_UDP) {
udph = (struct udphdr *)(data + offset);
if (my_file.port && htons(my_file.port) != udph->uh_dport && htons(my_file.port) != udph->uh_sport) {
return;
}
}
pkt->len = pcap_hdr->caplen;
pkt->buf = malloc(pkt->len + ETHER_CRC_LEN);
memcpy(pkt->buf, data, pkt->len);
iph6 = (struct ip6_hdr *)(pkt->buf + ETH_HLEN);
if (!memcmp(&iph6->ip6_src, flow->sv6, 16)) {
pkt->interface = 1;
} else {
pkt->interface = 2;
}
if (my_file.alter_ip) {
if (pkt->interface == 1) {
if (my_file.device2_in_nat) {
memcpy(&iph6->ip6_src, interface.sv6, 16);
memcpy(&iph6->ip6_dst, interface.device2nat6, 16);
} else {
memcpy(&iph6->ip6_src, interface.sv6, 16);
memcpy(&iph6->ip6_dst, interface.dv6, 16);
}
pkt->interface = 1;
} else {
if (my_file.device1_in_nat) {
memcpy(&iph6->ip6_src, interface.device1nat6, 16);
memcpy(&iph6->ip6_dst, interface.sv6, 16);
} else {
memcpy(&iph6->ip6_src, interface.dv6, 16);
memcpy(&iph6->ip6_dst, interface.sv6, 16);
}
pkt->interface = 2;
}
}
offset = 40 + ETH_HLEN;
if (iph6->ip6_nxt == IPPROTO_TCP) {
tcp_csum6(iph6, pkt->buf + offset);
} else if (iph6->ip6_nxt == IPPROTO_UDP) {
udp_csum6(iph6, pkt->buf + offset);
}
pkt->payload_offset = offset;
/*
* Rewrite the mac addresses on the packet.
*/
if (my_file.alter_mac) {
ph = (struct ether_header *)pkt->buf;
if (pkt->interface == 1) {
ph->ether_shost[0] = interface.device1_mac[0];
ph->ether_shost[1] = interface.device1_mac[1];
ph->ether_shost[2] = interface.device1_mac[2];
ph->ether_shost[3] = interface.device1_mac[3];
ph->ether_shost[4] = interface.device1_mac[4];
ph->ether_shost[5] = interface.device1_mac[5];
ph->ether_dhost[0] = interface.fw_mac1[0];
ph->ether_dhost[1] = interface.fw_mac1[1];