102 lines
3.1 KiB
C
102 lines
3.1 KiB
C
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/**
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* @file ip.c
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* Common IPv4 and IPv6 code
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*
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*/
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/*
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* Copyright (c) 2001-2004 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 modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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*/
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#include "lwip/opt.h"
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#if LWIP_IPV4 || LWIP_IPV6
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#include "lwip/ip_addr.h"
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#include "lwip/ip.h"
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/** Global data for both IPv4 and IPv6 */
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struct ip_globals ip_data;
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#if LWIP_IPV4 && LWIP_IPV6
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const ip_addr_t ip_addr_any_type = IPADDR_ANY_TYPE_INIT;
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/** Convert IP address string (both versions) to numeric.
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* The version is auto-detected from the string.
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*
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* @param cp IP address string to convert
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* @param addr conversion result is stored here
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* @return 1 on success, 0 on error
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*/
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int
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ipaddr_aton(const char *cp, ip_addr_t *addr)
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{
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if (cp != NULL) {
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const char* c;
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for (c = cp; *c != 0; c++) {
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if (*c == ':') {
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/* contains a colon: IPv6 address */
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if (addr) {
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IP_SET_TYPE_VAL(*addr, IPADDR_TYPE_V6);
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}
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return ip6addr_aton(cp, ip_2_ip6(addr));
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} else if (*c == '.') {
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/* contains a dot: IPv4 address */
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break;
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}
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}
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/* call ip4addr_aton as fallback or if IPv4 was found */
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if (addr) {
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IP_SET_TYPE_VAL(*addr, IPADDR_TYPE_V4);
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}
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return ip4addr_aton(cp, ip_2_ip4(addr));
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}
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return 0;
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}
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/* If both IP versions are enabled, this function can dispatch packets to the correct one. */
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err_t
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ip_input(struct pbuf *p, struct netif *inp)
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{
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if (p != NULL) {
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if (IP_HDR_GET_VERSION(p->payload) == 6) {
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return ip6_input(p, inp);
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}
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return ip4_input(p, inp);
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}
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return ERR_VAL;
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}
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#endif /* LWIP_IPV4 && LWIP_IPV6 */
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#endif /* LWIP_IPV4 || LWIP_IPV6 */
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