]> The Tcpdump Group git mirrors - tcpdump/blobdiff - print-zep.c
On Solaris, for 64-bit builds, use the 64-bit pcap-config.
[tcpdump] / print-zep.c
index f6be3a64ce26ef85c0d2ff183928536f8b84fd64..e10ecb35771ac849f12674f9053f608f56270d2c 100644 (file)
@@ -27,6 +27,7 @@
 
 #include "netdissect-stdinc.h"
 
+#define ND_LONGJMP_FROM_TCHECK
 #include "netdissect.h"
 
 #include "extract.h"
@@ -43,7 +44,6 @@
  ***********************************************************************
  *
  * 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|
  *
@@ -57,7 +57,6 @@
  *------------------------------------------------------------
  */
 
-#define     FMAXINT (4294967296.0)  /* floating point rep. of MAXINT */
 #define     JAN_1970        2208988800U
 
 /* Print timestamp */
@@ -109,25 +108,29 @@ zep_print(netdissect_options *ndo,
 
        nd_print_protocol_caps(ndo);
 
-       ND_TCHECK_LEN(bp, 8);
-
-       if (GET_U_1(bp) != 'E' || GET_U_1(bp + 1) != 'X')
-               goto trunc;
+       /* 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%d ", version);
+       ND_PRINT("v%u ", version);
 
        if (version == 1) {
                /* ZEP v1 packet. */
-               ND_TCHECK_LEN(bp, 16);
-               ND_PRINT("Channel ID %d, Device ID 0x%04x, ",
+               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 %d, ", GET_U_1(bp + 7));
+                       ND_PRINT("LQI %u, ", GET_U_1(bp + 7));
                inner_len = GET_U_1(bp + 15);
-               ND_PRINT("inner len = %d", inner_len);
+               ND_PRINT("inner len = %u", inner_len);
 
                bp += 16;
                len -= 16;
@@ -136,26 +139,24 @@ zep_print(netdissect_options *ndo,
                if (GET_U_1(bp + 3) == 2) {
                        /* ZEP v2 ack. */
                        seq_no = GET_BE_U_4(bp + 4);
-                       ND_PRINT("ACK, seq# = %d", seq_no);
+                       ND_PRINT("ACK, seq# = %u", seq_no);
                        inner_len = 0;
                        bp += 8;
                        len -= 8;
                } else {
                        /* ZEP v2 data, or some other. */
-                       ND_TCHECK_LEN(bp, 32);
-
-                       ND_PRINT("Type %d, Channel ID %d, Device ID 0x%04x, ",
+                       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 %d, ", GET_U_1(bp + 8));
+                               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# = %d, inner len = %d",
+                       ND_PRINT(", seq# = %u, inner len = %u",
                                 seq_no, inner_len);
                        bp += 32;
                        len -= 32;
@@ -166,6 +167,7 @@ zep_print(netdissect_options *ndo,
                /* 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;
                }
@@ -173,8 +175,4 @@ zep_print(netdissect_options *ndo,
 
        if (!ndo->ndo_suppress_default_print)
                ND_DEFAULTPRINT(bp, len);
-
-       return;
- trunc:
-       nd_print_trunc(ndo);
 }