The Tcpdump Group git mirrors - tcpdump/blob - print-usb.c

   1 /*
   2  * Copyright 2009 Bert Vermeulen <bert@biot.com>
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that: (1) source code distributions
   6  * retain the above copyright notice and this paragraph in its entirety, (2)
   7  * distributions including binary code include the above copyright notice and
   8  * this paragraph in its entirety in the documentation or other materials
   9  * provided with the distribution, and (3) all advertising materials mentioning
  10  * features or use of this software display the following acknowledgement:
  11  * ``This product includes software developed by Paolo Abeni.''
  12  * The name of author may not be used to endorse or promote products derived
  13  * from this software without specific prior written permission.
  14  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  15  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  16  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  17  *
  18  * Support for USB packets
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include "config.h"
  24 #endif
  25
  26 #include <tcpdump-stdinc.h>
  27
  28 #include <stdio.h>
  29 #include <string.h>
  30
  31 #include "interface.h"
  32
  33
  34 #if defined(HAVE_PCAP_USB_H) && defined(DLT_USB_LINUX)
  35 #include <pcap/usb.h>
  36
  37 static const char tstr[] = "[|usb]";
  38
  39 /* returns direction: 1=inbound 2=outbound -1=invalid */
  40 static int
  41 get_direction(int transfer_type, int event_type)
  42 {
  43         int direction;
  44
  45         direction = -1;
  46         switch(transfer_type){
  47         case URB_BULK:
  48         case URB_CONTROL:
  49         case URB_ISOCHRONOUS:
  50                 switch(event_type)
  51                 {
  52                 case URB_SUBMIT:
  53                         direction = 2;
  54                         break;
  55                 case URB_COMPLETE:
  56                 case URB_ERROR:
  57                         direction = 1;
  58                         break;
  59                 default:
  60                         direction = -1;
  61                 }
  62                 break;
  63         case URB_INTERRUPT:
  64                 switch(event_type)
  65                 {
  66                 case URB_SUBMIT:
  67                         direction = 1;
  68                         break;
  69                 case URB_COMPLETE:
  70                 case URB_ERROR:
  71                         direction = 2;
  72                         break;
  73                 default:
  74                         direction = -1;
  75                 }
  76                 break;
  77          default:
  78                 direction = -1;
  79         }
  80
  81         return direction;
  82 }
  83
  84 static void
  85 usb_header_print(const pcap_usb_header *uh)
  86 {
  87         int direction;
  88
  89         switch(uh->transfer_type)
  90         {
  91                 case URB_ISOCHRONOUS:
  92                         printf("ISOCHRONOUS");
  93                         break;
  94                 case URB_INTERRUPT:
  95                         printf("INTERRUPT");
  96                         break;
  97                 case URB_CONTROL:
  98                         printf("CONTROL");
  99                         break;
 100                 case URB_BULK:
 101                         printf("BULK");
 102                         break;
 103                 default:
 104                         printf(" ?");
 105         }
 106
 107         switch(uh->event_type)
 108         {
 109                 case URB_SUBMIT:
 110                         printf(" SUBMIT");
 111                         break;
 112                 case URB_COMPLETE:
 113                         printf(" COMPLETE");
 114                         break;
 115                 case URB_ERROR:
 116                         printf(" ERROR");
 117                         break;
 118                 default:
 119                         printf(" ?");
 120         }
 121
 122         direction = get_direction(uh->transfer_type, uh->event_type);
 123         if(direction == 1)
 124                 printf(" from");
 125         else if(direction == 2)
 126                 printf(" to");
 127         printf(" %d:%d:%d", uh->bus_id, uh->device_address, uh->endpoint_number & 0x7f);
 128 }
 129
 130 /*
 131  * This is the top level routine of the printer for captures with a
 132  * 48-byte header.
 133  *
 134  * 'p' points to the header of the packet, 'h->ts' is the timestamp,
 135  * 'h->len' is the length of the packet off the wire, and 'h->caplen'
 136  * is the number of bytes actually captured.
 137  */
 138 u_int
 139 usb_linux_48_byte_print(const struct pcap_pkthdr *h, register const u_char *p)
 140 {
 141         if (h->caplen < sizeof(pcap_usb_header)) {
 142                 printf("%s", tstr);
 143                 return(sizeof(pcap_usb_header));
 144         }
 145
 146         usb_header_print((const pcap_usb_header *) p);
 147
 148         return(sizeof(pcap_usb_header));
 149 }
 150
 151 #ifdef DLT_USB_LINUX_MMAPPED
 152 /*
 153  * This is the top level routine of the printer for captures with a
 154  * 64-byte header.
 155  *
 156  * 'p' points to the header of the packet, 'h->ts' is the timestamp,
 157  * 'h->len' is the length of the packet off the wire, and 'h->caplen'
 158  * is the number of bytes actually captured.
 159  */
 160 u_int
 161 usb_linux_64_byte_print(const struct pcap_pkthdr *h, register const u_char *p)
 162 {
 163         if (h->caplen < sizeof(pcap_usb_header_mmapped)) {
 164                 printf("%s", tstr);
 165                 return(sizeof(pcap_usb_header_mmapped));
 166         }
 167
 168         usb_header_print((const pcap_usb_header *) p);
 169
 170         return(sizeof(pcap_usb_header_mmapped));
 171 }
 172 #endif /* DLT_USB_LINUX_MMAPPED */
 173
 174 #endif /* defined(HAVE_PCAP_USB_H) && defined(DLT_USB_LINUX) */
 175