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-rw-r--r--print-ipx.c265
1 files changed, 265 insertions, 0 deletions
diff --git a/print-ipx.c b/print-ipx.c
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+/*
+ * Copyright (c) 1994, 1995, 1996
+ * 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.
+ *
+ * Contributed by Brad Parker (brad@fcr.com).
+ */
+
+/* \summary: Novell IPX printer */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "netdissect-stdinc.h"
+
+#include <stdio.h>
+
+#define ND_LONGJMP_FROM_TCHECK
+#include "netdissect.h"
+#include "addrtoname.h"
+#include "extract.h"
+
+/* well-known sockets */
+#define IPX_SKT_NCP 0x0451
+#define IPX_SKT_SAP 0x0452
+#define IPX_SKT_RIP 0x0453
+#define IPX_SKT_NETBIOS 0x0455
+#define IPX_SKT_DIAGNOSTICS 0x0456
+#define IPX_SKT_NWLINK_DGM 0x0553 /* NWLink datagram, may contain SMB */
+#define IPX_SKT_EIGRP 0x85be /* Cisco EIGRP over IPX */
+
+/* IPX transport header */
+struct ipxHdr {
+ nd_uint16_t cksum; /* Checksum */
+ nd_uint16_t length; /* Length, in bytes, including header */
+ nd_uint8_t tCtl; /* Transport Control (i.e. hop count) */
+ nd_uint8_t pType; /* Packet Type (i.e. level 2 protocol) */
+ nd_uint32_t dstNet; /* destination net */
+ nd_mac_addr dstNode; /* destination node */
+ nd_uint16_t dstSkt; /* destination socket */
+ nd_uint32_t srcNet; /* source net */
+ nd_mac_addr srcNode; /* source node */
+ nd_uint16_t srcSkt; /* source socket */
+};
+
+#define ipxSize 30
+
+static const char *ipxaddr_string(netdissect_options *, uint32_t, const u_char *);
+static void ipx_decode(netdissect_options *, const struct ipxHdr *, const u_char *, u_int);
+static void ipx_sap_print(netdissect_options *, const u_char *, u_int);
+static void ipx_rip_print(netdissect_options *, const u_char *, u_int);
+
+/*
+ * Print IPX datagram packets.
+ */
+void
+ipx_print(netdissect_options *ndo, const u_char *p, u_int length)
+{
+ const struct ipxHdr *ipx = (const struct ipxHdr *)p;
+
+ ndo->ndo_protocol = "ipx";
+ if (!ndo->ndo_eflag)
+ ND_PRINT("IPX ");
+
+ ND_PRINT("%s.%04x > ",
+ ipxaddr_string(ndo, GET_BE_U_4(ipx->srcNet), ipx->srcNode),
+ GET_BE_U_2(ipx->srcSkt));
+
+ ND_PRINT("%s.%04x: ",
+ ipxaddr_string(ndo, GET_BE_U_4(ipx->dstNet), ipx->dstNode),
+ GET_BE_U_2(ipx->dstSkt));
+
+ /* take length from ipx header */
+ length = GET_BE_U_2(ipx->length);
+
+ if (length < ipxSize) {
+ ND_PRINT("[length %u < %u]", length, ipxSize);
+ nd_print_invalid(ndo);
+ return;
+ }
+ ipx_decode(ndo, ipx, p + ipxSize, length - ipxSize);
+}
+
+static const char *
+ipxaddr_string(netdissect_options *ndo, uint32_t net, const u_char *node)
+{
+ static char line[256];
+
+ snprintf(line, sizeof(line), "%08x.%02x:%02x:%02x:%02x:%02x:%02x",
+ net, GET_U_1(node), GET_U_1(node + 1),
+ GET_U_1(node + 2), GET_U_1(node + 3),
+ GET_U_1(node + 4), GET_U_1(node + 5));
+
+ return line;
+}
+
+static void
+ipx_decode(netdissect_options *ndo, const struct ipxHdr *ipx, const u_char *datap, u_int length)
+{
+ u_short dstSkt;
+
+ dstSkt = GET_BE_U_2(ipx->dstSkt);
+ switch (dstSkt) {
+ case IPX_SKT_NCP:
+ ND_PRINT("ipx-ncp %u", length);
+ break;
+ case IPX_SKT_SAP:
+ ipx_sap_print(ndo, datap, length);
+ break;
+ case IPX_SKT_RIP:
+ ipx_rip_print(ndo, datap, length);
+ break;
+ case IPX_SKT_NETBIOS:
+ ND_PRINT("ipx-netbios %u", length);
+#ifdef ENABLE_SMB
+ ipx_netbios_print(ndo, datap, length);
+#endif
+ break;
+ case IPX_SKT_DIAGNOSTICS:
+ ND_PRINT("ipx-diags %u", length);
+ break;
+ case IPX_SKT_NWLINK_DGM:
+ ND_PRINT("ipx-nwlink-dgm %u", length);
+#ifdef ENABLE_SMB
+ ipx_netbios_print(ndo, datap, length);
+#endif
+ break;
+ case IPX_SKT_EIGRP:
+ eigrp_print(ndo, datap, length);
+ break;
+ default:
+ ND_PRINT("ipx-#%x %u", dstSkt, length);
+ break;
+ }
+}
+
+static void
+ipx_sap_print(netdissect_options *ndo, const u_char *ipx, u_int length)
+{
+ int command, i;
+
+ command = GET_BE_U_2(ipx);
+ ipx += 2;
+ length -= 2;
+
+ switch (command) {
+ case 1:
+ case 3:
+ if (command == 1)
+ ND_PRINT("ipx-sap-req");
+ else
+ ND_PRINT("ipx-sap-nearest-req");
+
+ ND_PRINT(" %s", ipxsap_string(ndo, htons(GET_BE_U_2(ipx))));
+ break;
+
+ case 2:
+ case 4:
+ if (command == 2)
+ ND_PRINT("ipx-sap-resp");
+ else
+ ND_PRINT("ipx-sap-nearest-resp");
+
+ for (i = 0; i < 8 && length != 0; i++) {
+ ND_TCHECK_2(ipx);
+ if (length < 2)
+ goto invalid;
+ ND_PRINT(" %s '", ipxsap_string(ndo, htons(GET_BE_U_2(ipx))));
+ ipx += 2;
+ length -= 2;
+ if (length < 48) {
+ ND_PRINT("'");
+ goto invalid;
+ }
+ nd_printjnp(ndo, ipx, 48);
+ ND_PRINT("'");
+ ipx += 48;
+ length -= 48;
+ /*
+ * 10 bytes of IPX address.
+ */
+ ND_TCHECK_LEN(ipx, 10);
+ if (length < 10)
+ goto invalid;
+ ND_PRINT(" addr %s",
+ ipxaddr_string(ndo, GET_BE_U_4(ipx), ipx + 4));
+ ipx += 10;
+ length -= 10;
+ /*
+ * 2 bytes of socket and 2 bytes of number of intermediate
+ * networks.
+ */
+ ND_TCHECK_4(ipx);
+ if (length < 4)
+ goto invalid;
+ ipx += 4;
+ length -= 4;
+ }
+ break;
+ default:
+ ND_PRINT("ipx-sap-?%x", command);
+ break;
+ }
+ return;
+
+invalid:
+ nd_print_invalid(ndo);
+}
+
+static void
+ipx_rip_print(netdissect_options *ndo, const u_char *ipx, u_int length)
+{
+ int command, i;
+
+ command = GET_BE_U_2(ipx);
+ ipx += 2;
+ length -= 2;
+
+ switch (command) {
+ case 1:
+ ND_PRINT("ipx-rip-req");
+ if (length != 0) {
+ if (length < 8)
+ goto invalid;
+ ND_PRINT(" %08x/%u.%u", GET_BE_U_4(ipx),
+ GET_BE_U_2(ipx + 4), GET_BE_U_2(ipx + 6));
+ }
+ break;
+ case 2:
+ ND_PRINT("ipx-rip-resp");
+ for (i = 0; i < 50 && length != 0; i++) {
+ if (length < 8)
+ goto invalid;
+ ND_PRINT(" %08x/%u.%u", GET_BE_U_4(ipx),
+ GET_BE_U_2(ipx + 4), GET_BE_U_2(ipx + 6));
+
+ ipx += 8;
+ length -= 8;
+ }
+ break;
+ default:
+ ND_PRINT("ipx-rip-?%x", command);
+ break;
+ }
+ return;
+
+invalid:
+ nd_print_invalid(ndo);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-16 22:50:02 +0000