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test inverse arp

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mykola2312 2024-12-18 13:47:39 +02:00
parent bab44ceea9
commit 2be92f0ad6
1 changed files with 11 additions and 3 deletions
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14
main.c
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@ -92,7 +92,15 @@ ssize_t link_send(struct linkinterface* link, uint16_t type, uint8_t* packet, si
memcpy(ether->ether_dhost, link->gateway, ETH_ALEN); memcpy(ether->ether_dhost, link->gateway, ETH_ALEN);
ether->ether_type = htons(type); ether->ether_type = htons(type);
return send(link->fd, packet, len, 0); struct sockaddr_ll ll_addr = {0};
ll_addr.sll_family = PF_PACKET;
//ll_addr.sll_protocol = htons(type);
ll_addr.sll_ifindex = link->if_idx;
ll_addr.sll_halen = ETH_ALEN;
memcpy(ll_addr.sll_addr, link->gateway, ETH_ALEN);
return sendto(link->fd, packet, len, 0,
(const struct sockaddr*)&ll_addr, sizeof(ll_addr));
} }
ssize_t link_recv(struct linkinterface* link, uint16_t type, uint8_t* packet, size_t len) { ssize_t link_recv(struct linkinterface* link, uint16_t type, uint8_t* packet, size_t len) {
@ -166,8 +174,8 @@ int main(int argc, char** argv) {
arp_packet_t arp; arp_packet_t arp;
arp.hrd = htons(ARP_HW_ETHER); arp.hrd = htons(ARP_HW_ETHER);
arp.pro = htons(ARP_PT_IP); arp.pro = htons(ARP_PT_IP);
arp.hln = htons(ETH_ALEN); arp.hln = ETH_ALEN;
arp.pln = htons(4); arp.pln = 4;
arp.op = htons(INARP_OP_REQUEST); arp.op = htons(INARP_OP_REQUEST);
memcpy(arp.sha, link->host, ETH_ALEN); memcpy(arp.sha, link->host, ETH_ALEN);
memcpy(arp.spa, ip, 4); memcpy(arp.spa, ip, 4);