1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
/*
* Copyright 2009 Bert Vermeulen <bert@biot.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by Paolo Abeni.''
* The name of author may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* Support for USB packets
*
*/
/* \summary: USB printer */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <netdissect-stdinc.h>
#include "netdissect.h"
#if defined(HAVE_PCAP_USB_H) && defined(DLT_USB_LINUX)
#include <pcap/usb.h>
static const char tstr[] = "[|usb]";
/* returns direction: 1=inbound 2=outbound -1=invalid */
static int
get_direction(int transfer_type, int event_type)
{
int direction;
direction = -1;
switch(transfer_type){
case URB_BULK:
case URB_CONTROL:
case URB_ISOCHRONOUS:
switch(event_type)
{
case URB_SUBMIT:
direction = 2;
break;
case URB_COMPLETE:
case URB_ERROR:
direction = 1;
break;
default:
direction = -1;
}
break;
case URB_INTERRUPT:
switch(event_type)
{
case URB_SUBMIT:
direction = 1;
break;
case URB_COMPLETE:
case URB_ERROR:
direction = 2;
break;
default:
direction = -1;
}
break;
default:
direction = -1;
}
return direction;
}
static void
usb_header_print(netdissect_options *ndo, const pcap_usb_header *uh)
{
int direction;
switch(uh->transfer_type)
{
case URB_ISOCHRONOUS:
ND_PRINT((ndo, "ISOCHRONOUS"));
break;
case URB_INTERRUPT:
ND_PRINT((ndo, "INTERRUPT"));
break;
case URB_CONTROL:
ND_PRINT((ndo, "CONTROL"));
break;
case URB_BULK:
ND_PRINT((ndo, "BULK"));
break;
default:
ND_PRINT((ndo, " ?"));
}
switch(uh->event_type)
{
case URB_SUBMIT:
ND_PRINT((ndo, " SUBMIT"));
break;
case URB_COMPLETE:
ND_PRINT((ndo, " COMPLETE"));
break;
case URB_ERROR:
ND_PRINT((ndo, " ERROR"));
break;
default:
ND_PRINT((ndo, " ?"));
}
direction = get_direction(uh->transfer_type, uh->event_type);
if(direction == 1)
ND_PRINT((ndo, " from"));
else if(direction == 2)
ND_PRINT((ndo, " to"));
ND_PRINT((ndo, " %d:%d:%d", uh->bus_id, uh->device_address, uh->endpoint_number & 0x7f));
}
/*
* This is the top level routine of the printer for captures with a
* 48-byte header.
*
* 'p' points to the 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
usb_linux_48_byte_print(netdissect_options *ndo, const struct pcap_pkthdr *h,
register const u_char *p)
{
if (h->caplen < sizeof(pcap_usb_header)) {
ND_PRINT((ndo, "%s", tstr));
return(sizeof(pcap_usb_header));
}
usb_header_print(ndo, (const pcap_usb_header *) p);
return(sizeof(pcap_usb_header));
}
#ifdef DLT_USB_LINUX_MMAPPED
/*
* This is the top level routine of the printer for captures with a
* 64-byte header.
*
* 'p' points to the 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
usb_linux_64_byte_print(netdissect_options *ndo, const struct pcap_pkthdr *h,
register const u_char *p)
{
if (h->caplen < sizeof(pcap_usb_header_mmapped)) {
ND_PRINT((ndo, "%s", tstr));
return(sizeof(pcap_usb_header_mmapped));
}
usb_header_print(ndo, (const pcap_usb_header *) p);
return(sizeof(pcap_usb_header_mmapped));
}
#endif /* DLT_USB_LINUX_MMAPPED */
#endif /* defined(HAVE_PCAP_USB_H) && defined(DLT_USB_LINUX) */
|
