From 7adcb5b605cc1328a3084c334f4697ec9771936c Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 15 Apr 2024 19:13:01 +0200 Subject: Adding upstream version 4.99.4. Signed-off-by: Daniel Baumann --- print-ipx.c | 267 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 267 insertions(+) create mode 100644 print-ipx.c (limited to 'print-ipx.c') diff --git a/print-ipx.c b/print-ipx.c new file mode 100644 index 0000000..f8c0ce7 --- /dev/null +++ b/print-ipx.c @@ -0,0 +1,267 @@ +/* + * 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 +#endif + +#include "netdissect-stdinc.h" + +#include + +#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); + ND_LCHECK_U(length, 2); + 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); + ND_LCHECK_U(length, 2); + 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); +} -- cgit v1.2.3