TSK_VS_INFO *
tsk_vs_sun_open(TSK_IMG_INFO * img_info, TSK_DADDR_T offset)
{
TSK_VS_INFO *vs;
// clean up any errors that are lying around
tsk_error_reset();
vs = (TSK_VS_INFO *) tsk_malloc(sizeof(*vs));
if (vs == NULL)
return NULL;
vs->img_info = img_info;
vs->vstype = TSK_VS_TYPE_SUN;
vs->tag = TSK_VS_INFO_TAG;
vs->offset = offset;
/* inititialize settings */
vs->part_list = NULL;
vs->part_count = 0;
vs->endian = 0;
vs->block_size = img_info->sector_size;
/* Assign functions */
vs->close = sun_close;
/* Load the partitions into the sorted list */
if (sun_load_table(vs)) {
sun_close(vs);
return NULL;
}
/* fill in the sorted list with the 'unknown' values */
if (tsk_vs_part_unused(vs)) {
sun_close(vs);
return NULL;
}
return vs;
}
int main_t10(int argc, char *argv[]){
int sockfd;
struct iphdr *ip_hdr;
struct icmphdr *icmp_hdr;
struct sockaddr_in servaddr;
int payload_size = 0;
if(argc != 4){
fprintf(stderr, "Usage: %s <source IP> <dest IP> <payload size>", argv[0]);
exit(0);
}
payload_size = atoi(argv[3]);
/*
* If you use IPPROTO_ICMP, then kernel will fill in the correct
* ICMP header checksum, If IPPROTO_RAW, then it wont
*/
sockfd = sun_socket(AF_INET, SOCK_RAW, IPPROTO_RAW);
const int on = 1;
// Provide ourself IP header
sun_setsockopt(sockfd, IPPROTO_IP, IP_HDRINCL, &on, sizeof(on));
// Allow socket to send datagrams to broadcast addresses
sun_setsockopt(sockfd, SOL_SOCKET, SO_BROADCAST, (const char *)&on, sizeof(on));
// Calculate total packet size
int packet_size = sizeof(struct iphdr) + sizeof(struct icmphdr) + payload_size;
char *packet = (char *)sun_malloc(packet_size);
ip_hdr = (struct iphdr *)packet;
icmp_hdr = (struct icmphdr *)(packet + sizeof(struct iphdr));
memset(packet, 0, packet_size);
ip_hdr->version = 4;
ip_hdr->ihl = 5; // IP header length 5*32 = 160bits = 20 bytes
ip_hdr->tos = 0; // Type of service
ip_hdr->tot_len = htons(packet_size); // Total length, header + data
ip_hdr->id = rand(); // Identification
ip_hdr->ttl = 255; // Time-to-live
ip_hdr->frag_off = 0; // Fragment Offset
ip_hdr->protocol = IPPROTO_ICMP; // Protocol
sun_inet_pton(AF_INET, argv[1], &ip_hdr->saddr); // Source address
sun_inet_pton(AF_INET, argv[2], &ip_hdr->daddr); // Destination Address
ip_hdr->check = 0; // check sum, Let kernel fills in.
icmp_hdr->type = ICMP_ECHO;
icmp_hdr->code = 0;
icmp_hdr->un.echo.sequence = rand();
icmp_hdr->un.echo.id = rand();
// set payload
memset(packet + sizeof(struct iphdr) + sizeof(struct icmphdr), rand() % 255, payload_size);
// set checksum
icmp_hdr->checksum = sun_in_cksum((unsigned short *)icmp_hdr, sizeof(struct icmphdr) + payload_size);
memset(&servaddr, 0, sizeof(servaddr));
servaddr.sin_family = AF_INET;
sun_inet_pton(AF_INET, argv[2], &servaddr.sin_addr);
sun_sendto(sockfd, packet, packet_size, 0, (struct sockaddr *)&servaddr, sizeof(servaddr));
printf("done.\n");
free(packet);
sun_close(sockfd);
return (0);
}
