create project

print-ppi.c

@@ -0,0 +1,125 @@
+/*
+ * Oracle
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <netdissect-stdinc.h>
+
+#include "netdissect.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 u_int
+ppi_print(netdissect_options *ndo,
+               const struct pcap_pkthdr *h, const u_char *p)
+{
+	if_printer printer;
+	const ppi_header_t *hdr;
+	u_int caplen = h->caplen;
+	u_int length = h->len;
+	uint16_t len;
+	uint32_t dlt;
+	uint32_t hdrlen;
+	struct pcap_pkthdr nhdr;
+
+	if (caplen < sizeof(ppi_header_t)) {
+		ND_PRINT((ndo, "[|ppi]"));
+		return (caplen);
+	}
+
+	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 -= len;
+	caplen -= len;
+	p += len;
+
+	if ((printer = lookup_printer(dlt)) != NULL) {
+		nhdr = *h;
+		nhdr.caplen = caplen;
+		nhdr.len = length;
+		hdrlen = printer(ndo, &nhdr, p);
+	} else {
+		if (!ndo->ndo_eflag)
+			ppi_header_print(ndo, (const u_char *)hdr, length + len);
+
+		if (!ndo->ndo_suppress_default_print)
+			ND_DEFAULTPRINT(p, caplen);
+		hdrlen = 0;
+	}
+	return (len + hdrlen);
+}
+
+/*
+ * 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)
+{
+	return (ppi_print(ndo, h, p));
+}
+
+/*
+ * Local Variables:
+ * c-style: whitesmith
+ * c-basic-offset: 8
+ * End:
+ */
+
+#endif /* DLT_PPI */