1 /*
2 * Oracle
3 */
4 #ifdef HAVE_CONFIG_H
5 #include "config.h"
6 #endif
7
8 #include <tcpdump-stdinc.h>
9
10 #include <stdio.h>
11 #include <pcap.h>
12
13 #include "netdissect.h"
14 #include "interface.h"
15 #include "extract.h"
16 #include "ppi.h"
17
18 #ifdef DLT_PPI
19
20 static inline void
ppi_header_print(struct netdissect_options * ndo,const u_char * bp,u_int length)21 ppi_header_print(struct netdissect_options *ndo, const u_char *bp, u_int length)
22 {
23 const ppi_header_t *hdr;
24 u_int32_t dlt;
25 u_int16_t len;
26
27 hdr = (const ppi_header_t *)bp;
28
29 len = EXTRACT_16BITS(&hdr->ppi_len);
30 dlt = EXTRACT_32BITS(&hdr->ppi_dlt);
31
32 if (!ndo->ndo_qflag) {
33 ND_PRINT((ndo,", V.%d DLT %s (%d) len %d", hdr->ppi_ver,
34 pcap_datalink_val_to_name(dlt), dlt,
35 len));
36 } else {
37 ND_PRINT((ndo,", %s", pcap_datalink_val_to_name(dlt)));
38 }
39
40 ND_PRINT((ndo, ", length %u: ", length));
41 }
42
43 static void
ppi_print(struct netdissect_options * ndo,const struct pcap_pkthdr * h,const u_char * p)44 ppi_print(struct netdissect_options *ndo,
45 const struct pcap_pkthdr *h, const u_char *p)
46 {
47 if_ndo_printer ndo_printer;
48 if_printer printer;
49 ppi_header_t *hdr;
50 u_int caplen = h->caplen;
51 u_int length = h->len;
52 u_int32_t dlt;
53
54 if (caplen < sizeof(ppi_header_t)) {
55 ND_PRINT((ndo, "[|ppi]"));
56 return;
57 }
58 hdr = (ppi_header_t *)p;
59 dlt = EXTRACT_32BITS(&hdr->ppi_dlt);
60
61 if (ndo->ndo_eflag)
62 ppi_header_print(ndo, p, length);
63
64 length -= sizeof(ppi_header_t);
65 caplen -= sizeof(ppi_header_t);
66 p += sizeof(ppi_header_t);
67
68 if ((printer = lookup_printer(dlt)) != NULL) {
69 printer(h, p);
70 } else if ((ndo_printer = lookup_ndo_printer(dlt)) != NULL) {
71 ndo_printer(ndo, h, p);
72 } else {
73 if (!ndo->ndo_eflag)
74 ppi_header_print(ndo, (u_char *)hdr,
75 length + sizeof(ppi_header_t));
76
77 if (!ndo->ndo_suppress_default_print)
78 ndo->ndo_default_print(ndo, p, caplen);
79 }
80 }
81
82 /*
83 * This is the top level routine of the printer. 'p' points
84 * to the ether header of the packet, 'h->ts' is the timestamp,
85 * 'h->len' is the length of the packet off the wire, and 'h->caplen'
86 * is the number of bytes actually captured.
87 */
88 u_int
ppi_if_print(struct netdissect_options * ndo,const struct pcap_pkthdr * h,const u_char * p)89 ppi_if_print(struct netdissect_options *ndo,
90 const struct pcap_pkthdr *h, const u_char *p)
91 {
92 ppi_print(ndo, h, p);
93
94 return (sizeof(ppi_header_t));
95 }
96
97 /*
98 * Local Variables:
99 * c-style: whitesmith
100 * c-basic-offset: 8
101 * End:
102 */
103
104 #endif /* DLT_PPI */
105