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dvtws: set ip_id field in generated packets

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bol-van
2024-11-15 15:51:59 +03:00
parent 5d6c91f7e9
commit 677feecada
3 changed files with 114 additions and 69 deletions
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22
nfq/darkmagic.c
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@@ -163,7 +163,7 @@ static void fill_udphdr(struct udphdr *udp, uint16_t nsport, uint16_t ndport, ui
udp->uh_sum = 0;
}
static void fill_iphdr(struct ip *ip, const struct in_addr *src, const struct in_addr *dst, uint16_t pktlen, uint8_t proto, uint8_t ttl, uint8_t tos)
static void fill_iphdr(struct ip *ip, const struct in_addr *src, const struct in_addr *dst, uint16_t pktlen, uint8_t proto, uint8_t ttl, uint8_t tos, uint16_t ip_id)
{
ip->ip_tos = tos;
ip->ip_sum = 0;
@@ -171,7 +171,7 @@ static void fill_iphdr(struct ip *ip, const struct in_addr *src, const struct in
ip->ip_v = 4;
ip->ip_hl = 5;
ip->ip_len = htons(pktlen);
ip->ip_id = 0;
ip->ip_id = ip_id;
ip->ip_ttl = ttl;
ip->ip_p = proto;
ip->ip_src = *src;
@@ -196,6 +196,7 @@ bool prepare_tcp_segment4(
uint32_t *timestamps,
uint8_t ttl,
uint8_t tos,
uint16_t ip_id,
uint32_t fooling,
uint32_t badseq_increment,
uint32_t badseq_ack_increment,
@@ -211,7 +212,7 @@ bool prepare_tcp_segment4(
struct tcphdr *tcp = (struct tcphdr*)(ip+1);
uint8_t *payload = (uint8_t*)(tcp+1)+tcpoptlen;
fill_iphdr(ip, &src->sin_addr, &dst->sin_addr, pktlen, IPPROTO_TCP, ttl, tos);
fill_iphdr(ip, &src->sin_addr, &dst->sin_addr, pktlen, IPPROTO_TCP, ttl, tos, ip_id);
fill_tcphdr(tcp,fooling,tcp_flags,nseq,nack_seq,src->sin_port,dst->sin_port,nwsize,scale_factor,timestamps,badseq_increment,badseq_ack_increment,len);
memcpy(payload,data,len);
@@ -314,7 +315,9 @@ bool prepare_tcp_segment(
uint8_t scale_factor,
uint32_t *timestamps,
uint8_t ttl,
uint8_t tos, uint32_t flow_label,
uint8_t tos,
uint16_t ip_id,
uint32_t flow_label,
uint32_t fooling,
uint32_t badseq_increment,
uint32_t badseq_ack_increment,
@@ -322,7 +325,7 @@ bool prepare_tcp_segment(
uint8_t *buf, size_t *buflen)
{
return (src->sa_family==AF_INET && dst->sa_family==AF_INET) ?
prepare_tcp_segment4((struct sockaddr_in *)src,(struct sockaddr_in *)dst,tcp_flags,nseq,nack_seq,nwsize,scale_factor,timestamps,ttl,tos,fooling,badseq_increment,badseq_ack_increment,data,len,buf,buflen) :
prepare_tcp_segment4((struct sockaddr_in *)src,(struct sockaddr_in *)dst,tcp_flags,nseq,nack_seq,nwsize,scale_factor,timestamps,ttl,tos,ip_id,fooling,badseq_increment,badseq_ack_increment,data,len,buf,buflen) :
(src->sa_family==AF_INET6 && dst->sa_family==AF_INET6) ?
prepare_tcp_segment6((struct sockaddr_in6 *)src,(struct sockaddr_in6 *)dst,tcp_flags,nseq,nack_seq,nwsize,scale_factor,timestamps,ttl,flow_label,fooling,badseq_increment,badseq_ack_increment,data,len,buf,buflen) :
false;
@@ -334,6 +337,7 @@ bool prepare_udp_segment4(
const struct sockaddr_in *src, const struct sockaddr_in *dst,
uint8_t ttl,
uint8_t tos,
uint16_t ip_id,
uint32_t fooling,
const uint8_t *padding, size_t padding_size,
int padlen,
@@ -357,7 +361,7 @@ bool prepare_udp_segment4(
uint8_t *payload = (uint8_t*)(udp+1);
fill_iphdr(ip, &src->sin_addr, &dst->sin_addr, pktlen, IPPROTO_UDP, ttl, tos);
fill_iphdr(ip, &src->sin_addr, &dst->sin_addr, pktlen, IPPROTO_UDP, ttl, tos, ip_id);
fill_udphdr(udp, src->sin_port, dst->sin_port, datalen);
memcpy(payload,data,len);
@@ -463,7 +467,9 @@ bool prepare_udp_segment6(
bool prepare_udp_segment(
const struct sockaddr *src, const struct sockaddr *dst,
uint8_t ttl,
uint8_t tos, uint32_t flow_label,
uint8_t tos,
uint16_t ip_id,
uint32_t flow_label,
uint32_t fooling,
const uint8_t *padding, size_t padding_size,
int padlen,
@@ -471,7 +477,7 @@ bool prepare_udp_segment(
uint8_t *buf, size_t *buflen)
{
return (src->sa_family==AF_INET && dst->sa_family==AF_INET) ?
prepare_udp_segment4((struct sockaddr_in *)src,(struct sockaddr_in *)dst,ttl,tos,fooling,padding,padding_size,padlen,data,len,buf,buflen) :
prepare_udp_segment4((struct sockaddr_in *)src,(struct sockaddr_in *)dst,ttl,tos,ip_id,fooling,padding,padding_size,padlen,data,len,buf,buflen) :
(src->sa_family==AF_INET6 && dst->sa_family==AF_INET6) ?
prepare_udp_segment6((struct sockaddr_in6 *)src,(struct sockaddr_in6 *)dst,ttl,flow_label,fooling,padding,padding_size,padlen,data,len,buf,buflen) :
false;