1 /* 2 * Copyright (c) 2007 3 * paolo.abeni@email.it All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that: (1) source code distributions 7 * retain the above copyright notice and this paragraph in its entirety, (2) 8 * distributions including binary code include the above copyright notice and 9 * this paragraph in its entirety in the documentation or other materials 10 * provided with the distribution, and (3) all advertising materials mentioning 11 * features or use of this software display the following acknowledgement: 12 * ``This product includes software developed by Paolo Abeni.'' 13 * The name of author may not be used to endorse or promote products derived 14 * from this software without specific prior written permission. 15 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 16 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 17 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 18 */ 19 20 /* \summary: Bluetooth printer */ 21 22 #include <config.h> 23 24 #include "netdissect-stdinc.h" 25 26 #define ND_LONGJMP_FROM_TCHECK 27 #include "netdissect.h" 28 #include "extract.h" 29 30 #ifdef DLT_BLUETOOTH_HCI_H4_WITH_PHDR 31 32 /* 33 * Header prepended by libpcap to each bluetooth h4 frame; 34 * the direction field is in network byte order. 35 */ 36 typedef struct _bluetooth_h4_header { 37 nd_uint32_t direction; /* if first bit is set direction is incoming */ 38 } bluetooth_h4_header; 39 40 #define BT_HDRLEN sizeof(bluetooth_h4_header) 41 42 /* 43 * This is the top level routine of the printer. 'p' points 44 * to the bluetooth header of the packet, 'h->ts' is the timestamp, 45 * 'h->len' is the length of the packet off the wire, and 'h->caplen' 46 * is the number of bytes actually captured. 47 */ 48 void 49 bt_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) 50 { 51 u_int length = h->len; 52 u_int caplen = h->caplen; 53 const bluetooth_h4_header *hdr = (const bluetooth_h4_header *)p; 54 55 ndo->ndo_protocol = "bluetooth"; 56 nd_print_protocol(ndo); 57 ND_TCHECK_LEN(p, BT_HDRLEN); 58 ndo->ndo_ll_hdr_len += BT_HDRLEN; 59 caplen -= BT_HDRLEN; 60 length -= BT_HDRLEN; 61 p += BT_HDRLEN; 62 if (ndo->ndo_eflag) 63 ND_PRINT(", hci length %u, direction %s", length, 64 (GET_BE_U_4(hdr->direction)&0x1) ? "in" : "out"); 65 66 if (!ndo->ndo_suppress_default_print) 67 ND_DEFAULTPRINT(p, caplen); 68 } 69 #endif 70