freebsd-dev/contrib/tcpdump/print-ppi.c
Patrick Kelsey 8bdc5a6251 MFV r285191: tcpdump 4.7.4.
Also, the changes made in r272451 and r272653 that were lost in the
merge of 4.6.2 (r276788) have been restored.

PR: 199568
Differential Revision: https://reviews.freebsd.org/D3007
Reviewed by: brooks, hiren
Approved by: jmallett (mentor)
MFC after: 1 month
2015-07-08 16:19:32 +00:00

120 lines
2.4 KiB
C

/*
* Oracle
*/
#define NETDISSECT_REWORKED
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <tcpdump-stdinc.h>
#include "interface.h"
#include "extract.h"
typedef struct ppi_header {
uint8_t ppi_ver;
uint8_t ppi_flags;
uint16_t ppi_len;
uint32_t ppi_dlt;
} ppi_header_t;
#define PPI_HDRLEN 8
#ifdef DLT_PPI
static inline void
ppi_header_print(netdissect_options *ndo, const u_char *bp, u_int length)
{
const ppi_header_t *hdr;
uint16_t len;
uint32_t dlt;
hdr = (const ppi_header_t *)bp;
len = EXTRACT_LE_16BITS(&hdr->ppi_len);
dlt = EXTRACT_LE_32BITS(&hdr->ppi_dlt);
if (!ndo->ndo_qflag) {
ND_PRINT((ndo, "V.%d DLT %s (%d) len %d", hdr->ppi_ver,
pcap_datalink_val_to_name(dlt), dlt,
len));
} else {
ND_PRINT((ndo, "%s", pcap_datalink_val_to_name(dlt)));
}
ND_PRINT((ndo, ", length %u: ", length));
}
static void
ppi_print(netdissect_options *ndo,
const struct pcap_pkthdr *h, const u_char *p)
{
if_ndo_printer ndo_printer;
if_printer printer;
ppi_header_t *hdr;
u_int caplen = h->caplen;
u_int length = h->len;
uint16_t len;
uint32_t dlt;
if (caplen < sizeof(ppi_header_t)) {
ND_PRINT((ndo, "[|ppi]"));
return;
}
hdr = (ppi_header_t *)p;
len = EXTRACT_LE_16BITS(&hdr->ppi_len);
if (len < sizeof(ppi_header_t)) {
ND_PRINT((ndo, "[|ppi]"));
return;
}
if (caplen < len) {
ND_PRINT((ndo, "[|ppi]"));
return;
}
dlt = EXTRACT_LE_32BITS(&hdr->ppi_dlt);
if (ndo->ndo_eflag)
ppi_header_print(ndo, p, length);
length -= len;
caplen -= len;
p += len;
if ((printer = lookup_printer(dlt)) != NULL) {
printer(h, p);
} else if ((ndo_printer = lookup_ndo_printer(dlt)) != NULL) {
ndo_printer(ndo, h, p);
} else {
if (!ndo->ndo_eflag)
ppi_header_print(ndo, (u_char *)hdr, length + len);
if (!ndo->ndo_suppress_default_print)
ND_DEFAULTPRINT(p, caplen);
}
}
/*
* This is the top level routine of the printer. 'p' points
* to the ether 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
ppi_if_print(netdissect_options *ndo,
const struct pcap_pkthdr *h, const u_char *p)
{
ppi_print(ndo, h, p);
return (sizeof(ppi_header_t));
}
/*
* Local Variables:
* c-style: whitesmith
* c-basic-offset: 8
* End:
*/
#endif /* DLT_PPI */