91 lines
3.2 KiB
C
Executable File
91 lines
3.2 KiB
C
Executable File
/*
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* Copyright (c) 2010, Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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/**
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* \file
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* A set of debugging tools for the IP stack
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* \author
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* Nicolas Tsiftes <nvt@sics.se>
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* Niclas Finne <nfi@sics.se>
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* Joakim Eriksson <joakime@sics.se>
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*/
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#include "net/ipv6/uip-debug.h"
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#include "net/ipv6/ip64-addr.h"
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/*---------------------------------------------------------------------------*/
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void
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uip_debug_ipaddr_print(const uip_ipaddr_t *addr)
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{
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uint16_t a;
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unsigned int i;
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int f;
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if(addr == NULL) {
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PRINTA("(NULL IP addr)");
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return;
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}
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if(ip64_addr_is_ipv4_mapped_addr(addr)) {
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/*
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* Printing IPv4-mapped addresses is done according to RFC 4291 [1]
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*
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* "An alternative form that is sometimes more
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* convenient when dealing with a mixed environment
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* of IPv4 and IPv6 nodes is x:x:x:x:x:x:d.d.d.d,
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* where the 'x's are the hexadecimal values of the
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* six high-order 16-bit pieces of the address, and
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* the 'd's are the decimal values of the four
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* low-order 8-bit pieces of the address (standard
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* IPv4 representation)."
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*
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* [1] https://tools.ietf.org/html/rfc4291#page-4
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*/
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PRINTA("::FFFF:%u.%u.%u.%u", addr->u8[12], addr->u8[13], addr->u8[14], addr->u8[15]);
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} else {
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for(i = 0, f = 0; i < sizeof(uip_ipaddr_t); i += 2) {
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a = (addr->u8[i] << 8) + addr->u8[i + 1];
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if(a == 0 && f >= 0) {
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if(f++ == 0) {
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PRINTA("::");
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}
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} else {
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if(f > 0) {
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f = -1;
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} else if(i > 0) {
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PRINTA(":");
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}
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PRINTA("%x", a);
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}
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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