Esempi in C++ (Cpp) per pkt_set_dissector

Esempio n. 1

File: dissector_sll.c Progetto: nckx/netsniff-ng

static void sll_print_full(struct pkt_buff *pkt)
{
	struct sockaddr_ll *sll = pkt->sll;
	char addr_str[40] = {};

	tprintf(" [ Linux \"cooked\"");
	tprintf(" Pkt Type %d (%s)", sll->sll_pkttype,
		pkt_type2str(sll->sll_pkttype));
	tprintf(", If Type %d (%s)", sll->sll_hatype,
		device_type2str(sll->sll_hatype));
	tprintf(", Addr Len %d", sll->sll_halen);
	tprintf(", Src (%s)", device_addr2str(sll->sll_addr, sll->sll_halen,
		sll->sll_hatype, addr_str, sizeof(addr_str)));
	tprintf(", Proto 0x%x", ntohs(sll->sll_protocol));
	tprintf(" ]\n");

	switch (pcap_devtype_to_linktype(sll->sll_hatype)) {
	case LINKTYPE_EN10MB:
	case ___constant_swab32(LINKTYPE_EN10MB):
		pkt_set_dissector(pkt, &eth_lay2, ntohs(sll->sll_protocol));
		break;
	case LINKTYPE_NETLINK:
	case ___constant_swab32(LINKTYPE_NETLINK):
		pkt->dissector = &nlmsg_ops;
		break;
	default:
		tprintf(" [ Unknown protocol ]\n");
	}
}

Esempio n. 2

File: proto_ip_authentication_hdr.c Progetto: aaronwme/netsniff-ng

static void auth_hdr_less(struct pkt_buff *pkt)
{
  	ssize_t hdr_len;
	struct auth_hdr *auth_ops;

	auth_ops = (struct auth_hdr *) pkt_pull(pkt, sizeof(*auth_ops));
	if (auth_ops == NULL)
		return;

	hdr_len = (auth_ops->h_payload_len * 4) + 8;
	if (hdr_len > pkt_len(pkt) || hdr_len < 0)
		return;

	tprintf(" AH");

	pkt_pull(pkt, hdr_len - sizeof(*auth_ops));
	pkt_set_dissector(pkt, &eth_lay3, auth_ops->h_next_header);
}

Esempio n. 3

File: proto_ip_authentication_hdr.c Progetto: aaronwme/netsniff-ng

static void auth_hdr(struct pkt_buff *pkt)
{
	size_t i, hdr_len;
	struct auth_hdr *auth_ops;

	auth_ops = (struct auth_hdr *) pkt_pull(pkt, sizeof(*auth_ops));
	if (auth_ops == NULL)
		return;

	hdr_len = (auth_ops->h_payload_len * 4) + 8;

	tprintf(" [ Authentication Header ");
	tprintf("NextHdr (%u), ", auth_ops->h_next_header);
	if (hdr_len > pkt_len(pkt)) {
		tprintf("HdrLen (%u, %zd Bytes %s), ",
		      auth_ops->h_payload_len, hdr_len,
		      colorize_start_full(black, red)
		      "invalid" colorize_end());
		      return;
	}
	tprintf("HdrLen (%u, %zd Bytes), ",auth_ops->h_payload_len, hdr_len);
	tprintf("Reserved (0x%x), ", ntohs(auth_ops->h_reserved));
	/* TODO
	 * Upgrade for Extended (64-bit) Sequence Number
	 * http://tools.ietf.org/html/rfc4302#section-2.5.1
	 */
	tprintf("SPI (0x%x), ", ntohl(auth_ops->h_spi));
	tprintf("SNF (0x%x), ", ntohl(auth_ops->h_snf));
	tprintf("ICV 0x");
	for (i = sizeof(struct auth_hdr); i < hdr_len; i++) {
		uint8_t *data = pkt_pull(pkt, 1);

		if (data == NULL) {
			tprintf("%sinvalid%s", colorize_start_full(black, red),
				colorize_end());
			break;
		}

		tprintf("%02x", *data);
	}
	tprintf(" ]\n");

	pkt_set_dissector(pkt, &eth_lay3, auth_ops->h_next_header);
}