Adding upstream version 4.99.3.upstream/4.99.3upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 184 insertions, 0 deletions

diff --git a/print-zep.c b/print-zep.c
new file mode 100644
index 0000000..fd74368
--- /dev/null
+++ b/print-zep.c
@@ -0,0 +1,184 @@
+/*
+ * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * 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 the University of California,
+ * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
+ * the University nor the names of its contributors may 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.
+ */
+
+/* \summary: ZigBee Encapsulation Protocol (ZEP) printer */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "netdissect-stdinc.h"
+
+#define ND_LONGJMP_FROM_TCHECK
+#include "netdissect.h"
+
+#include "extract.h"
+
+/* From wireshark packet-zep.c:
+ *
+ ***********************************************************************
+ *
+ * ZEP Packets must be received in the following format:
+ *
+ * |UDP Header|  ZEP Header |IEEE 802.15.4 Packet|
+ * | 8 bytes  | 16/32 bytes |    <= 127 bytes    |
+ *
+ ***********************************************************************
+ *
+ * ZEP v1 Header will have the following format:
+ * |Preamble|Version|Channel ID|Device ID|CRC/LQI Mode|LQI Val|Reserved|Length|
+ * |2 bytes |1 byte |  1 byte  | 2 bytes |   1 byte   |1 byte |7 bytes |1 byte|
+ *
+ * ZEP v2 Header will have the following format (if type=1/Data):
+ * |Prmbl|Ver  |Type |ChnlID|DevID|C/L Mode|LQI|NTP TS|Seq#|Res |Len|
+ * | 2   | 1   | 1   | 1    | 2   | 1      | 1 | 8    | 4  | 10 | 1 |
+ *
+ * ZEP v2 Header will have the following format (if type=2/Ack):
+ * |Preamble|Version| Type |Sequence#|
+ * |2 bytes |1 byte |1 byte| 4 bytes |
+ *------------------------------------------------------------
+ */
+
+#define     JAN_1970        2208988800U
+
+/* Print timestamp */
+static void zep_print_ts(netdissect_options *ndo, const u_char *p)
+{
+	int32_t i;
+	uint32_t uf;
+	uint32_t f;
+	float ff;
+
+	i = GET_BE_U_4(p);
+	uf = GET_BE_U_4(p + 4);
+	ff = (float) uf;
+	if (ff < 0.0)           /* some compilers are buggy */
+		ff += FMAXINT;
+	ff = (float) (ff / FMAXINT); /* shift radix point by 32 bits */
+	f = (uint32_t) (ff * 1000000000.0);  /* treat fraction as parts per
+						billion */
+	ND_PRINT("%u.%09d", i, f);
+
+#ifdef HAVE_STRFTIME
+	/*
+	 * print the time in human-readable format.
+	 */
+	if (i) {
+		time_t seconds = i - JAN_1970;
+		struct tm *tm;
+		char time_buf[128];
+
+		tm = localtime(&seconds);
+		strftime(time_buf, sizeof (time_buf), "%Y/%m/%d %H:%M:%S", tm);
+		ND_PRINT(" (%s)", time_buf);
+	}
+#endif
+}
+
+/*
+ * Main function to print packets.
+ */
+
+void
+zep_print(netdissect_options *ndo,
+	  const u_char *bp, u_int len)
+{
+	uint8_t version, inner_len;
+	uint32_t seq_no;
+
+	ndo->ndo_protocol = "zep";
+
+	nd_print_protocol_caps(ndo);
+
+	/* Preamble Code (must be "EX") */
+	if (GET_U_1(bp) != 'E' || GET_U_1(bp + 1) != 'X') {
+		ND_PRINT(" [Preamble Code: ");
+		fn_print_char(ndo, GET_U_1(bp));
+		fn_print_char(ndo, GET_U_1(bp + 1));
+		ND_PRINT("]");
+		nd_print_invalid(ndo);
+		return;
+	}
+
+	version = GET_U_1(bp + 2);
+	ND_PRINT("v%u ", version);
+
+	if (version == 1) {
+		/* ZEP v1 packet. */
+		ND_LCHECK_U(len, 16);
+		ND_PRINT("Channel ID %u, Device ID 0x%04x, ",
+			 GET_U_1(bp + 3), GET_BE_U_2(bp + 4));
+		if (GET_U_1(bp + 6))
+			ND_PRINT("CRC, ");
+		else
+			ND_PRINT("LQI %u, ", GET_U_1(bp + 7));
+		inner_len = GET_U_1(bp + 15);
+		ND_PRINT("inner len = %u", inner_len);
+
+		bp += 16;
+		len -= 16;
+	} else {
+		/* ZEP v2 packet. */
+		if (GET_U_1(bp + 3) == 2) {
+			/* ZEP v2 ack. */
+			ND_LCHECK_U(len, 8);
+			seq_no = GET_BE_U_4(bp + 4);
+			ND_PRINT("ACK, seq# = %u", seq_no);
+			inner_len = 0;
+			bp += 8;
+			len -= 8;
+		} else {
+			/* ZEP v2 data, or some other. */
+			ND_LCHECK_U(len, 32);
+			ND_PRINT("Type %u, Channel ID %u, Device ID 0x%04x, ",
+				 GET_U_1(bp + 3), GET_U_1(bp + 4),
+				 GET_BE_U_2(bp + 5));
+			if (GET_U_1(bp + 7))
+				ND_PRINT("CRC, ");
+			else
+				ND_PRINT("LQI %u, ", GET_U_1(bp + 8));
+
+			zep_print_ts(ndo, bp + 9);
+			seq_no = GET_BE_U_4(bp + 17);
+			inner_len = GET_U_1(bp + 31);
+			ND_PRINT(", seq# = %u, inner len = %u",
+				 seq_no, inner_len);
+			bp += 32;
+			len -= 32;
+		}
+	}
+
+	if (inner_len != 0) {
+		/* Call 802.15.4 dissector. */
+		ND_PRINT("\n\t");
+		if (ieee802_15_4_print(ndo, bp, inner_len)) {
+			ND_TCHECK_LEN(bp, len);
+			bp += len;
+			len = 0;
+		}
+	}
+
+	if (!ndo->ndo_suppress_default_print)
+		ND_DEFAULTPRINT(bp, len);
+	return;
+invalid:
+	nd_print_invalid(ndo);
+}