diff options
Diffstat (limited to 'print-usb.c')
| -rw-r--r-- | print-usb.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/print-usb.c b/print-usb.c new file mode 100644 index 000000000000..04eb4efb4fe3 --- /dev/null +++ b/print-usb.c @@ -0,0 +1,176 @@ +/* + * 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) */ + |