u_int cip_if_print(const struct pcap_pkthdr *h, const u_char *p) { u_int caplen = h->caplen; u_int length = h->len; u_short extracted_ethertype; if (memcmp(rfcllc, p, sizeof(rfcllc))==0 && caplen < RFC1483LLC_LEN) { printf("[|cip]"); return (0); } if (eflag) cip_print(length); if (memcmp(rfcllc, p, sizeof(rfcllc)) == 0) { if (llc_print(p, length, caplen, NULL, NULL, &extracted_ethertype) == 0) { if (!eflag) cip_print(length); if (extracted_ethertype) { printf("(LLC %s) ", etherproto_string(htons(extracted_ethertype))); } if (!suppress_default_print) default_print(p, caplen); } } else { ip_print(gndo, p, length); } return (0); }
/* * This is the top level routine of the printer. 'p' points * to the LLC/SNAP or raw header of the packet, 'h->ts' is the timestamp, * 'h->len' is the length of the packet off the wire, and 'h->caplen' * is the number of bytes actually captured. */ u_int cip_if_print(const struct pcap_pkthdr *h, const u_char *p) { u_int caplen = h->caplen; u_int length = h->len; u_short extracted_ethertype; if (memcmp(rfcllc, p, sizeof(rfcllc))==0 && caplen < RFC1483LLC_LEN) { printf("[|cip]"); return (0); } if (eflag) cip_print(length); if (memcmp(rfcllc, p, sizeof(rfcllc)) == 0) { /* * LLC header is present. Try to print it & higher layers. */ if (llc_print(p, length, caplen, NULL, NULL, &extracted_ethertype) == 0) { /* ether_type not known, print raw packet */ if (!eflag) cip_print(length); if (extracted_ethertype) { printf("(LLC %s) ", etherproto_string(htons(extracted_ethertype))); } if (!suppress_default_print) default_print(p, caplen); } } else { /* * LLC header is absent; treat it as just IP. */ ip_print(gndo, p, length); } return (0); }
/* * This is the top level routine of the printer. 'p' points * to the LLC/SNAP or raw header of the packet, 'h->ts' is the timestamp, * 'h->len' is the length of the packet off the wire, and 'h->caplen' * is the number of bytes actually captured. */ u_int cip_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) { u_int caplen = h->caplen; u_int length = h->len; size_t cmplen; int llc_hdrlen; ndo->ndo_protocol = "cip_if"; cmplen = sizeof(rfcllc); if (cmplen > caplen) cmplen = caplen; if (cmplen > length) cmplen = length; if (ndo->ndo_eflag) cip_print(ndo, length); if (cmplen == 0) { ND_PRINT("[|cip]"); return 0; } if (memcmp(rfcllc, p, cmplen) == 0) { /* * LLC header is present. Try to print it & higher layers. */ llc_hdrlen = llc_print(ndo, p, length, caplen, NULL, NULL); if (llc_hdrlen < 0) { /* packet type not known, print raw packet */ if (!ndo->ndo_suppress_default_print) ND_DEFAULTPRINT(p, caplen); llc_hdrlen = -llc_hdrlen; } } else { /* * LLC header is absent; treat it as just IP. */ llc_hdrlen = 0; ip_print(ndo, p, length); } return (llc_hdrlen); }