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Diffstat (limited to 'print-rrcp.c')
| -rw-r--r-- | print-rrcp.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/print-rrcp.c b/print-rrcp.c new file mode 100644 index 000000000000..936b3ea72ced --- /dev/null +++ b/print-rrcp.c @@ -0,0 +1,129 @@ +/* + * Copyright (c) 2007 - Andrey "nording" Chernyak <andrew@nording.ru> + * + * 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. + * + * Format and print Realtek Remote Control Protocol (RRCP) + * and Realtek Echo Protocol (RRCP-REP) packets. + */ + +/* \summary: Realtek Remote Control Protocol (RRCP) printer */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <netdissect-stdinc.h> + +#include "netdissect.h" +#include "addrtoname.h" +#include "extract.h" +#include "ether.h" + +#define RRCP_OPCODE_MASK 0x7F /* 0x00 = hello, 0x01 = get, 0x02 = set */ +#define RRCP_ISREPLY 0x80 /* 0 = request to switch, 0x80 = reply from switch */ + +#define RRCP_PROTO_OFFSET 0 /* proto - 1 byte, must be 1 */ +#define RRCP_OPCODE_ISREPLY_OFFSET 1 /* opcode and isreply flag - 1 byte */ +#define RRCP_AUTHKEY_OFFSET 2 /* authorization key - 2 bytes, 0x2379 by default */ + +/* most packets */ +#define RRCP_REG_ADDR_OFFSET 4 /* register address - 2 bytes */ +#define RRCP_REG_DATA_OFFSET 6 /* register data - 4 bytes */ +#define RRCP_COOKIE1_OFFSET 10 /* 4 bytes */ +#define RRCP_COOKIE2_OFFSET 14 /* 4 bytes */ + +/* hello reply packets */ +#define RRCP_DOWNLINK_PORT_OFFSET 4 /* 1 byte */ +#define RRCP_UPLINK_PORT_OFFSET 5 /* 1 byte */ +#define RRCP_UPLINK_MAC_OFFSET 6 /* 6 byte MAC address */ +#define RRCP_CHIP_ID_OFFSET 12 /* 2 bytes */ +#define RRCP_VENDOR_ID_OFFSET 14 /* 4 bytes */ + +static const struct tok proto_values[] = { + { 1, "RRCP" }, + { 2, "RRCP-REP" }, + { 0, NULL } +}; + +static const struct tok opcode_values[] = { + { 0, "hello" }, + { 1, "get" }, + { 2, "set" }, + { 0, NULL } +}; + +/* + * Print RRCP requests + */ +void +rrcp_print(netdissect_options *ndo, + register const u_char *cp, + u_int length _U_, + const struct lladdr_info *src, + const struct lladdr_info *dst) +{ + uint8_t rrcp_proto; + uint8_t rrcp_opcode; + + ND_TCHECK(*(cp + RRCP_PROTO_OFFSET)); + rrcp_proto = *(cp + RRCP_PROTO_OFFSET); + ND_TCHECK(*(cp + RRCP_OPCODE_ISREPLY_OFFSET)); + rrcp_opcode = (*(cp + RRCP_OPCODE_ISREPLY_OFFSET)) & RRCP_OPCODE_MASK; + if (src != NULL && dst != NULL) { + ND_PRINT((ndo, "%s > %s, ", + (src->addr_string)(ndo, src->addr), + (dst->addr_string)(ndo, dst->addr))); + } + ND_PRINT((ndo, "%s %s", + tok2str(proto_values,"RRCP-0x%02x",rrcp_proto), + ((*(cp + RRCP_OPCODE_ISREPLY_OFFSET)) & RRCP_ISREPLY) ? "reply" : "query")); + if (rrcp_proto==1){ + ND_PRINT((ndo, ": %s", + tok2str(opcode_values,"unknown opcode (0x%02x)",rrcp_opcode))); + } + if (rrcp_opcode==1 || rrcp_opcode==2){ + ND_TCHECK2(*(cp + RRCP_REG_ADDR_OFFSET), 6); + ND_PRINT((ndo, " addr=0x%04x, data=0x%08x", + EXTRACT_LE_16BITS(cp + RRCP_REG_ADDR_OFFSET), + EXTRACT_LE_32BITS(cp + RRCP_REG_DATA_OFFSET))); + } + if (rrcp_proto==1){ + ND_TCHECK2(*(cp + RRCP_AUTHKEY_OFFSET), 2); + ND_PRINT((ndo, ", auth=0x%04x", + EXTRACT_16BITS(cp + RRCP_AUTHKEY_OFFSET))); + } + if (rrcp_proto==1 && rrcp_opcode==0 && + ((*(cp + RRCP_OPCODE_ISREPLY_OFFSET)) & RRCP_ISREPLY)){ + ND_TCHECK2(*(cp + RRCP_VENDOR_ID_OFFSET), 4); + ND_PRINT((ndo, " downlink_port=%d, uplink_port=%d, uplink_mac=%s, vendor_id=%08x ,chip_id=%04x ", + *(cp + RRCP_DOWNLINK_PORT_OFFSET), + *(cp + RRCP_UPLINK_PORT_OFFSET), + etheraddr_string(ndo, cp + RRCP_UPLINK_MAC_OFFSET), + EXTRACT_32BITS(cp + RRCP_VENDOR_ID_OFFSET), + EXTRACT_16BITS(cp + RRCP_CHIP_ID_OFFSET))); + }else if (rrcp_opcode==1 || rrcp_opcode==2 || rrcp_proto==2){ + ND_TCHECK2(*(cp + RRCP_COOKIE2_OFFSET), 4); + ND_PRINT((ndo, ", cookie=0x%08x%08x ", + EXTRACT_32BITS(cp + RRCP_COOKIE2_OFFSET), + EXTRACT_32BITS(cp + RRCP_COOKIE1_OFFSET))); + } + return; + +trunc: + ND_PRINT((ndo, "[|rrcp]")); +} |