Add program_name field in the netdissect_options structure

[tcpdump] / print-ppi.c

diff --git a/print-ppi.c b/print-ppi.c
index 38873c84c5aeb35594cc891313d978c065f0e72a..b40acd00c302292d103cf0fa6cfc151771f92587 100644 (file)
--- a/print-ppi.c
+++ b/print-ppi.c
@@ -1,82 +1,101 @@
 /*
  * Oracle
  */
+
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 
 #include <tcpdump-stdinc.h>
 
-#include <stdio.h>
-#include <pcap.h>
-
 #include "netdissect.h"
-#include "interface.h"
 #include "extract.h"
-#include "ppi.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(struct netdissect_options *ndo, const u_char *bp, u_int length)
+ppi_header_print(netdissect_options *ndo, const u_char *bp, u_int length)
 {
        const ppi_header_t *hdr;
-       u_int32_t dlt;
-       u_int16_t len;
+       uint16_t len;
+       uint32_t dlt;
 
        hdr = (const ppi_header_t *)bp;
 
-       len = EXTRACT_16BITS(&hdr->ppi_len);
-       dlt = EXTRACT_32BITS(&hdr->ppi_dlt);
+       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,
+               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, "%s", pcap_datalink_val_to_name(dlt)));
         }
 
        ND_PRINT((ndo, ", length %u: ", length));
 }
 
-static void
-ppi_print(struct netdissect_options *ndo,
+static u_int
+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;
+       if_printer printer;
+       const ppi_header_t *hdr;
        u_int caplen = h->caplen;
        u_int length = h->len;
-       u_int32_t dlt;
+       uint16_t len;
+       uint32_t dlt;
+       uint32_t hdrlen;
 
        if (caplen < sizeof(ppi_header_t)) {
                ND_PRINT((ndo, "[|ppi]"));
-               return;
+               return (caplen);
        }
-       hdr = (ppi_header_t *)p;
-       dlt = EXTRACT_32BITS(&hdr->ppi_dlt);
+
+       hdr = (const ppi_header_t *)p;
+       len = EXTRACT_LE_16BITS(&hdr->ppi_len);
+       if (caplen < len) {
+               /*
+                * If we don't have the entire PPI header, don't
+                * bother.
+                */
+               ND_PRINT((ndo, "[|ppi]"));
+               return (caplen);
+       }
+       if (len < sizeof(ppi_header_t)) {
+               ND_PRINT((ndo, "[|ppi]"));
+               return (len);
+       }
+       dlt = EXTRACT_LE_32BITS(&hdr->ppi_dlt);
 
        if (ndo->ndo_eflag)
                ppi_header_print(ndo, p, length);
 
-       length -= sizeof(ppi_header_t);
-       caplen -= sizeof(ppi_header_t);
-       p += sizeof(ppi_header_t);
+       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);
+               hdrlen = printer(ndo, h, p);
        } else {
                if (!ndo->ndo_eflag)
-                       ppi_header_print(ndo, (u_char *)hdr,
-                                       length + sizeof(ppi_header_t));
+                       ppi_header_print(ndo, (const u_char *)hdr, length + len);
 
                if (!ndo->ndo_suppress_default_print)
-                       ndo->ndo_default_print(ndo, p, caplen);
+                       ND_DEFAULTPRINT(p, caplen);
+               hdrlen = 0;
        }
+       return (len + hdrlen);
 }
 
 /*
@@ -86,12 +105,10 @@ ppi_print(struct netdissect_options *ndo,
  * is the number of bytes actually captured.
  */
 u_int
-ppi_if_print(struct netdissect_options *ndo,
+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));
+       return (ppi_print(ndo, h, p));
 }
 
 /*