mirror of
https://code.semirocket.science/wrapsix
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4bc68edce5
Written new mechanism of wrapper from scratch in C * It listens to all ICMPv6 packets (for now) and translates them to ICMPv4 ones * It can compute the checksum of the packet as well
24 lines
626 B
C
24 lines
626 B
C
#include <unistd.h>
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#include "wrapper.h"
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void send_there(struct in_addr ip4_addr, unsigned char ttl, unsigned int type, unsigned char *payload, unsigned int paylen) {
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int sock;
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struct sockaddr_in sock_addr;
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if ((sock = socket(AF_INET, SOCK_RAW, type)) == -1) {
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fprintf(stderr, "Couldn't open RAW socket.\n");
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exit(EXIT_FAILURE);
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}
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setsockopt(sock, IPPROTO_IP, IP_TTL, (const char *) &ttl, sizeof(ttl));
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sock_addr.sin_family = AF_INET;
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sock_addr.sin_port = 0;
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sock_addr.sin_addr = ip4_addr;
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sendto(sock, (char *) payload, paylen, 0, (struct sockaddr *) &sock_addr, sizeof(struct sockaddr));
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close(sock);
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}
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