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/* $OpenBSD: print-vqp.c,v 1.7 2006/08/24 05:11:43 stevesk Exp $ */ |
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/* |
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* Copyright (c) 2006 Kevin Steves <stevesk@openbsd.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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/* |
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* VLAN Query Protocol (VQP) |
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* |
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* 0 1 2 3 |
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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* | Version | Opcode | Response Code | Data Count | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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* | Transaction ID | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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* | Type (1) | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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* | Length | Data / |
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* / / |
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* / / |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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* | Type (n) | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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* | Length | Data / |
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* / / |
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* / / |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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* |
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* VQP is layered over UDP. The default destination port is 1589. |
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* |
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*/ |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <net/if.h> |
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#include <netinet/in.h> |
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#include <netinet/if_ether.h> |
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#include <arpa/inet.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include "interface.h" |
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#include "addrtoname.h" |
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#include "extract.h" |
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struct vqp_hdr { |
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u_char version; |
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u_char opcode; |
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u_char rcode; |
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u_char dcount; |
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u_int32_t xid; |
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}; |
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#define VQP_JOIN 0x01 |
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#define VQP_JOIN_RESPONSE 0x02 |
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#define VQP_RECONFIRM 0x03 |
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#define VQP_RECONFIRM_RESPONSE 0x04 |
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#define VQP_NO_ERROR 0x00 |
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#define VQP_WRONG_VERSION 0x01 |
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#define VQP_INSUFFICIENT_RESOURCES 0x02 |
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#define VQP_DENY 0x03 |
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#define VQP_SHUTDOWN 0x04 |
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#define VQP_WRONG_MGMT_DOMAIN 0x05 |
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/* 4 bytes struct in_addr; IP address of VQP client */ |
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#define VQP_CLIENT_ADDR 0x00000c01 |
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/* string */ |
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#define VQP_PORT_NAME 0x00000c02 |
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/* string */ |
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#define VQP_VLAN_NAME 0x00000c03 |
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/* string; VTP domain if set */ |
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#define VQP_DOMAIN_NAME 0x00000c04 |
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/* ethernet frame */ |
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#define VQP_ETHERNET_FRAME 0x00000c05 |
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/* 6 bytes, mac address */ |
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#define VQP_MAC 0x00000c06 |
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/* 2 bytes? */ |
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#define VQP_UNKNOWN 0x00000c07 |
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/* 6 bytes, mac address */ |
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#define VQP_COOKIE 0x00000c08 |
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static void |
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vqp_print_opcode(u_int val) |
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{ |
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switch (val) { |
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case VQP_JOIN: |
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printf("Join"); |
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break; |
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case VQP_JOIN_RESPONSE: |
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printf("JoinResp"); |
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break; |
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case VQP_RECONFIRM: |
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printf("Reconfirm"); |
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break; |
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case VQP_RECONFIRM_RESPONSE: |
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printf("ReconfirmResp"); |
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break; |
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default: |
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printf("unknown(%x)", val); |
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break; |
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} |
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} |
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static void |
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vqp_print_rcode(u_int val) |
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{ |
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switch (val) { |
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case VQP_NO_ERROR: |
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printf("NoError"); |
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break; |
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case VQP_WRONG_VERSION: |
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printf("WrongVersion"); |
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break; |
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case VQP_INSUFFICIENT_RESOURCES: |
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printf("InsufficientResources"); |
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break; |
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case VQP_DENY: |
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printf("Deny"); |
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break; |
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case VQP_SHUTDOWN: |
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printf("Shutdown"); |
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break; |
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case VQP_WRONG_MGMT_DOMAIN: |
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printf("WrongMgmtDomain"); |
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break; |
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default: |
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printf("unknown(%x)", val); |
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break; |
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} |
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} |
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static void |
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print_hex(const u_char *p, u_int len) |
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{ |
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while (len--) |
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printf("%02x", *p++); |
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} |
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static void |
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vqp_print_type(u_int type, u_int len, const u_char *p) |
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{ |
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switch (type) { |
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case VQP_CLIENT_ADDR: |
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printf(" client:"); |
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if (len == sizeof(struct in_addr)) { |
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struct in_addr in; |
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memcpy(&in, p, sizeof in); |
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printf("%s", inet_ntoa(in)); |
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} else |
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print_hex(p, len); |
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break; |
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case VQP_PORT_NAME: |
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printf(" port:"); |
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fn_printn(p, len, NULL); |
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break; |
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case VQP_VLAN_NAME: |
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printf(" vlan:"); |
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fn_printn(p, len, NULL); |
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break; |
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case VQP_DOMAIN_NAME: |
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printf(" domain:"); |
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fn_printn(p, len, NULL); |
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break; |
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case VQP_ETHERNET_FRAME: |
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printf(" ethernet:"); |
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if (vflag > 1) |
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print_hex(p, len); |
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else if (len >= ETHER_ADDR_LEN * 2) { |
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p += ETHER_ADDR_LEN; /* skip dst mac */ |
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printf("%s", etheraddr_string(p)); /* src mac */ |
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} else |
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print_hex(p, len); |
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break; |
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case VQP_MAC: |
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printf(" mac:"); |
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if (len == ETHER_ADDR_LEN) |
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printf("%s", etheraddr_string(p)); |
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else |
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print_hex(p, len); |
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break; |
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case VQP_UNKNOWN: |
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printf(" unknown:"); |
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print_hex(p, len); |
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break; |
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case VQP_COOKIE: |
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printf(" cookie:"); |
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if (len == ETHER_ADDR_LEN) |
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printf("%s", etheraddr_string(p)); |
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else |
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print_hex(p, len); |
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break; |
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default: |
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printf(" unknown(%x/%u)", type, len); |
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} |
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} |
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void |
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vqp_print(const u_char *bp, u_int len) |
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{ |
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struct vqp_hdr *p = (struct vqp_hdr *)bp; |
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u_int dcount; |
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TCHECK(p->version); |
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printf(" VQPv%u", p->version); |
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if (p->version != 1) |
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return; |
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TCHECK(p->opcode); |
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printf("-"); |
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vqp_print_opcode(p->opcode); |
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TCHECK(p->rcode); |
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printf(" rcode:"); |
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vqp_print_rcode(p->rcode); |
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TCHECK(p->xid); |
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printf(" xid:0x%08x", ntohl(p->xid)); |
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printf(" dcount:%u", p->dcount); |
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bp += sizeof(struct vqp_hdr); |
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dcount = p->dcount; |
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while (vflag && dcount > 0) { |
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u_int type, length; |
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TCHECK2(bp[0], 6); |
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type = EXTRACT_32BITS(bp); |
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bp += 4; |
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length = EXTRACT_16BITS(bp); |
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bp += 2; |
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TCHECK2(bp[0], length); |
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vqp_print_type(type, length, bp); |
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bp += length; |
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dcount--; |
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} |
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return; |
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trunc: |
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printf("[|vqp]"); |
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} |