forked from osmocom/wireshark
bf81b42e1e
(COPYING will be updated in next commit) svn path=/trunk/; revision=43536
605 lines
16 KiB
C
605 lines
16 KiB
C
/* address_to_str.c
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* Routines for utilities to convert addresses to strings.
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdlib.h>
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#include <string.h>
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h> /* needed for <netinet/in.h> */
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#endif
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#ifdef HAVE_NETINET_IN_H
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# include <netinet/in.h> /* needed for <arpa/inet.h> on some platforms */
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#endif
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#ifdef HAVE_ARPA_INET_H
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#include <arpa/inet.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h> /* needed to define AF_ values on UNIX */
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#endif
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#ifdef HAVE_WINSOCK2_H
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#include <winsock2.h> /* needed to define AF_ values on Windows */
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#endif
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#ifdef NEED_INET_V6DEFS_H
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# include "wsutil/inet_v6defs.h"
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#endif
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#include "to_str.h"
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#include "value_string.h"
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#include "addr_resolv.h"
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#include "pint.h"
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#include "atalk-utils.h"
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#include "sna-utils.h"
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#include "osi-utils.h"
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#include <epan/dissectors/packet-mtp3.h>
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#include <stdio.h>
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#include "emem.h"
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/* private to_str.c API, don't export to .h! */
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char *word_to_hex(char *out, guint16 word);
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char *word_to_hex_npad(char *out, guint16 word);
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char *dword_to_hex_punct(char *out, guint32 dword, char punct);
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char *dword_to_hex(char *out, guint32 dword);
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char *bytes_to_hexstr(char *out, const guint8 *ad, guint32 len);
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char *bytes_to_hexstr_punct(char *out, const guint8 *ad, guint32 len, char punct);
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/*
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* If a user _does_ pass in a too-small buffer, this is probably
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* going to be too long to fit. However, even a partial string
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* starting with "[Buf" should provide enough of a clue to be
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* useful.
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*/
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#define BUF_TOO_SMALL_ERR "[Buffer too small]"
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/* Wrapper for the most common case of asking
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* for a string using a colon as the hex-digit separator.
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*/
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/* XXX FIXME
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remove this one later when every call has been converted to ep_address_to_str()
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*/
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gchar *
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ether_to_str(const guint8 *ad)
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{
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return bytestring_to_str(ad, 6, ':');
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}
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gchar *
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tvb_ether_to_str(tvbuff_t *tvb, const gint offset)
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{
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return bytestring_to_str(tvb_get_ptr(tvb, offset, 6), 6, ':');
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}
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/*
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This function is very fast and this function is called a lot.
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XXX update the ep_address_to_str stuff to use this function.
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*/
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const gchar *
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ip_to_str(const guint8 *ad) {
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gchar *buf;
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buf=ep_alloc(MAX_IP_STR_LEN);
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ip_to_str_buf(ad, buf, MAX_IP_STR_LEN);
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return buf;
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}
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#define IPV4_LENGTH 4
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const gchar *
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tvb_ip_to_str(tvbuff_t *tvb, const gint offset)
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{
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gchar *buf;
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buf=ep_alloc(MAX_IP_STR_LEN);
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ip_to_str_buf(tvb_get_ptr(tvb, offset, IPV4_LENGTH), buf, MAX_IP_STR_LEN);
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return buf;
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}
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/* XXX FIXME
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remove this one later when every call has been converted to ep_address_to_str()
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*/
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gchar *
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ip6_to_str(const struct e_in6_addr *ad) {
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gchar *str;
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str=ep_alloc(MAX_IP6_STR_LEN);
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ip6_to_str_buf(ad, str);
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return str;
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}
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#define IPV6_LENGTH 16
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gchar *
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tvb_ip6_to_str(tvbuff_t *tvb, const gint offset)
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{
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gchar *buf;
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buf=ep_alloc(MAX_IP6_STR_LEN);
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ip6_to_str_buf((const struct e_in6_addr *)tvb_get_ptr(tvb, offset, IPV6_LENGTH), buf);
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return buf;
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}
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/* const char *
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* inet_ntop6(src, dst, size)
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* convert IPv6 binary address into presentation (printable) format
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* author:
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* Paul Vixie, 1996.
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*/
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static void
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ip6_to_str_buf_len(const guchar* src, char *buf, size_t buf_len)
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{
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struct { int base, len; } best, cur;
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guint words[8];
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int i;
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if (buf_len < MAX_IP6_STR_LEN) { /* buf_len < 40 */
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g_strlcpy(buf, BUF_TOO_SMALL_ERR, buf_len); /* Let the unexpected value alert user */
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return;
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}
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/*
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* Preprocess:
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* Copy the input (bytewise) array into a wordwise array.
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* Find the longest run of 0x00's in src[] for :: shorthanding.
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*/
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for (i = 0; i < 16; i += 2) {
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words[i / 2] = (src[i+1] << 0);
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words[i / 2] |= (src[i] << 8);
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}
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best.base = -1; best.len = 0;
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cur.base = -1; cur.len = 0;
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for (i = 0; i < 8; i++) {
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if (words[i] == 0) {
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if (cur.base == -1) {
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cur.base = i;
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cur.len = 1;
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} else
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cur.len++;
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} else {
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if (cur.base != -1) {
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if (best.base == -1 || cur.len > best.len)
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best = cur;
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cur.base = -1;
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}
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}
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}
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if (cur.base != -1) {
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if (best.base == -1 || cur.len > best.len)
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best = cur;
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}
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if (best.base != -1 && best.len < 2)
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best.base = -1;
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/* Is this address an encapsulated IPv4? */
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/* XXX,
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* Orginal code dated 1996 uses ::/96 as a valid IPv4-compatible addresses
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* but since Feb 2006 ::/96 is deprecated one.
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* Quoting wikipedia [0]:
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* > The 96-bit zero-value prefix ::/96, originally known as IPv4-compatible
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* > addresses, was mentioned in 1995[35] but first described in 1998.[41]
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* > This class of addresses was used to represent IPv4 addresses within
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* > an IPv6 transition technology. Such an IPv6 address has its first
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* > (most significant) 96 bits set to zero, while its last 32 bits are the
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* > IPv4 address that is represented.
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* > In February 2006 the Internet Engineering Task Force (IETF) has deprecated
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* > the use of IPv4-compatible addresses.[1] The only remaining use of this address
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* > format is to represent an IPv4 address in a table or database with fixed size
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* > members that must also be able to store an IPv6 address.
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*
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* If needed it can be fixed by changing next line:
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* if (best.base == 0 && (best.len == 6 || (best.len == 5 && words[5] == 0xffff)))
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* to:
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* if (best.base == 0 && best.len == 5 && words[5] == 0xffff)
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*
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* [0] http://en.wikipedia.org/wiki/IPv6_address#Historical_notes
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*/
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if (best.base == 0 && (best.len == 6 || (best.len == 5 && words[5] == 0xffff)))
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{
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/* best.len == 6 -> ::IPv4; 5 -> ::ffff:IPv4 */
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buf = g_stpcpy(buf, "::");
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if (best.len == 5)
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buf = g_stpcpy(buf, "ffff:");
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ip_to_str_buf(src + 12, buf, MAX_IP_STR_LEN);
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/* max: 2 + 5 + 16 == 23 bytes */
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return;
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}
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/*
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* Format the result.
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*/
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for (i = 0; i < 8; i++) {
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/* Are we inside the best run of 0x00's? */
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if (i == best.base) {
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*buf++ = ':';
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i += best.len;
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/* Was it a trailing run of 0x00's? */
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if (i == 8) {
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*buf++ = ':';
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break;
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}
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}
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/* Are we following an initial run of 0x00s or any real hex? */
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if (i != 0)
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*buf++ = ':';
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buf = word_to_hex_npad(buf, words[i]); /* max: 4B */
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/* max: 8 * 4 + 7 == 39 bytes */
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}
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*buf = '\0'; /* 40 byte */
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}
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void
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ip6_to_str_buf(const struct e_in6_addr *ad, gchar *buf)
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{
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ip6_to_str_buf_len((const guchar*)ad, buf, MAX_IP6_STR_LEN);
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}
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gchar*
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ipx_addr_to_str(const guint32 net, const guint8 *ad)
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{
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gchar *buf;
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char *name;
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name = get_ether_name_if_known(ad);
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if (name) {
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buf = ep_strdup_printf("%s.%s", get_ipxnet_name(net), name);
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}
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else {
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buf = ep_strdup_printf("%s.%s", get_ipxnet_name(net),
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bytestring_to_str(ad, 6, '\0'));
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}
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return buf;
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}
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gchar*
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ipxnet_to_string(const guint8 *ad)
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{
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guint32 addr = pntohl(ad);
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return ipxnet_to_str_punct(addr, ' ');
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}
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gchar *
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ipxnet_to_str_punct(const guint32 ad, const char punct)
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{
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gchar *buf = ep_alloc(12);
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*dword_to_hex_punct(buf, ad, punct) = '\0';
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return buf;
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}
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static void
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vines_addr_to_str_buf(const guint8 *addrp, gchar *buf, int buf_len)
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{
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if (buf_len < 14) {
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g_strlcpy(buf, BUF_TOO_SMALL_ERR, buf_len); /* Let the unexpected value alert user */
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return;
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}
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buf = dword_to_hex(buf, pntohl(&addrp[0])); /* 8 bytes */
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*buf++ = '.'; /* 1 byte */
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buf = word_to_hex(buf, pntohs(&addrp[4])); /* 4 bytes */
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*buf = '\0'; /* 1 byte */
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}
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gchar *
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tvb_vines_addr_to_str(tvbuff_t *tvb, const gint offset)
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{
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gchar *buf;
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buf=ep_alloc(214); /* XXX, 14 here? */
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vines_addr_to_str_buf(tvb_get_ptr(tvb, offset, VINES_ADDR_LEN), buf, 214);
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return buf;
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}
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/*
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This function is very fast and this function is called a lot.
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XXX update the ep_address_to_str stuff to use this function.
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*/
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gchar *
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eui64_to_str(const guint64 ad) {
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gchar *buf;
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guint8 *p_eui64;
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p_eui64 = ep_alloc(8);
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buf=ep_alloc(EUI64_STR_LEN);
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/* Copy and convert the address to network byte order. */
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*(guint64 *)(void *)(p_eui64) = pntoh64(&(ad));
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g_snprintf(buf, EUI64_STR_LEN, "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x:%.2x:%.2x",
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p_eui64[0], p_eui64[1], p_eui64[2], p_eui64[3],
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p_eui64[4], p_eui64[5], p_eui64[6], p_eui64[7] );
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return buf;
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}
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gchar *
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tvb_eui64_to_str(tvbuff_t *tvb, const gint offset, const guint encoding)
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{
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if(encoding)
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{
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return eui64_to_str(tvb_get_letoh64(tvb, offset));
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}else {
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return eui64_to_str(tvb_get_ntoh64(tvb, offset));
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}
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}
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static void
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usb_addr_to_str_buf(const guint8 *addrp, gchar *buf, int buf_len)
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{
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if(pletohl(&addrp[0])==0xffffffff){
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g_snprintf(buf, buf_len, "host");
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} else {
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g_snprintf(buf, buf_len, "%d.%d", pletohl(&addrp[0]), pletohl(&addrp[4]));
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}
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}
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static void
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tipc_addr_to_str_buf( const guint8 *data, gchar *buf, int buf_len){
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guint8 zone;
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guint16 subnetwork;
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guint16 processor;
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guint32 tipc_address;
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tipc_address = data[0];
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tipc_address = (tipc_address << 8) ^ data[1];
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tipc_address = (tipc_address << 8) ^ data[2];
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tipc_address = (tipc_address << 8) ^ data[3];
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processor = tipc_address & 0x0fff;
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tipc_address = tipc_address >> 12;
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subnetwork = tipc_address & 0x0fff;
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tipc_address = tipc_address >> 12;
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zone = tipc_address & 0xff;
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g_snprintf(buf,buf_len,"%u.%u.%u",zone,subnetwork,processor);
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}
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static void
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ib_addr_to_str_buf( const address *addr, gchar *buf, int buf_len){
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if (addr->len >= 16) { /* GID is 128bits */
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#define PREAMBLE_STR_LEN (sizeof("GID: ") - 1)
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g_snprintf(buf,buf_len,"GID: ");
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if (buf_len < (int)PREAMBLE_STR_LEN ||
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inet_ntop(AF_INET6, addr->data, buf + PREAMBLE_STR_LEN,
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buf_len - PREAMBLE_STR_LEN) == NULL ) /* Returns NULL if no space and does not touch buf */
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g_snprintf ( buf, buf_len, BUF_TOO_SMALL_ERR ); /* Let the unexpected value alert user */
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} else { /* this is a LID (16 bits) */
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guint16 lid_number;
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memcpy((void *)&lid_number, addr->data, sizeof lid_number);
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g_snprintf(buf,buf_len,"LID: %u",lid_number);
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}
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}
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/* XXX FIXME
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remove this one later when every call has been converted to ep_address_to_str()
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*/
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gchar *
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fc_to_str(const guint8 *ad)
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{
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return bytestring_to_str (ad, 3, '.');
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}
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gchar *
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tvb_fc_to_str(tvbuff_t *tvb, const gint offset)
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{
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return bytestring_to_str (tvb_get_ptr(tvb, offset, 3), 3, '.');
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}
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/* FC Network Header Network Address Authority Identifiers */
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#define FC_NH_NAA_IEEE 1 /* IEEE 802.1a */
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#define FC_NH_NAA_IEEE_E 2 /* IEEE Exteneded */
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#define FC_NH_NAA_LOCAL 3
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#define FC_NH_NAA_IP 4 /* 32-bit IP address */
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#define FC_NH_NAA_IEEE_R 5 /* IEEE Registered */
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#define FC_NH_NAA_IEEE_R_E 6 /* IEEE Registered Exteneded */
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/* according to FC-PH 3 draft these are now reclaimed and reserved */
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#define FC_NH_NAA_CCITT_INDV 12 /* CCITT 60 bit individual address */
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#define FC_NH_NAA_CCITT_GRP 14 /* CCITT 60 bit group address */
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gchar *
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fcwwn_to_str (const guint8 *ad)
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{
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int fmt;
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guint8 oui[6];
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gchar *ethstr;
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gchar *ethptr;
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if (ad == NULL) return NULL;
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ethstr=ep_alloc(512);
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ethptr = bytes_to_hexstr_punct(ethstr, ad, 8, ':'); /* 23 bytes */
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fmt = (ad[0] & 0xF0) >> 4;
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switch (fmt) {
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case FC_NH_NAA_IEEE:
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case FC_NH_NAA_IEEE_E:
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memcpy (oui, &ad[2], 6);
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g_snprintf (ethptr, 512-23, " (%s)", get_manuf_name (oui));
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break;
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case FC_NH_NAA_IEEE_R:
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oui[0] = ((ad[0] & 0x0F) << 4) | ((ad[1] & 0xF0) >> 4);
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oui[1] = ((ad[1] & 0x0F) << 4) | ((ad[2] & 0xF0) >> 4);
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oui[2] = ((ad[2] & 0x0F) << 4) | ((ad[3] & 0xF0) >> 4);
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oui[3] = ((ad[3] & 0x0F) << 4) | ((ad[4] & 0xF0) >> 4);
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oui[4] = ((ad[4] & 0x0F) << 4) | ((ad[5] & 0xF0) >> 4);
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oui[5] = ((ad[5] & 0x0F) << 4) | ((ad[6] & 0xF0) >> 4);
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g_snprintf (ethptr, 512-23, " (%s)", get_manuf_name (oui));
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break;
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default:
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*ethptr = '\0';
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break;
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}
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return (ethstr);
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}
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gchar *
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tvb_fcwwn_to_str(tvbuff_t *tvb, const gint offset)
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{
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return fcwwn_to_str (tvb_get_ptr(tvb, offset, 8));
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}
|
|
|
|
/*XXX FIXME the code below may be called very very frequently in the future.
|
|
optimize it for speed and get rid of the slow sprintfs */
|
|
/* XXX - perhaps we should have individual address types register
|
|
a table of routines to do operations such as address-to-name translation,
|
|
address-to-string translation, and the like, and have this call them,
|
|
and also have an address-to-string-with-a-name routine */
|
|
/* XXX - use this, and that future address-to-string-with-a-name routine,
|
|
in "col_set_addr()"; it might also be useful to have address types
|
|
export the names of the source and destination address fields, so
|
|
that "col_set_addr()" need know nothing whatsoever about particular
|
|
address types */
|
|
/* convert an address struct into a printable string */
|
|
|
|
gchar*
|
|
ep_address_to_str(const address *addr)
|
|
{
|
|
gchar *str;
|
|
|
|
str=ep_alloc(MAX_ADDR_STR_LEN);
|
|
address_to_str_buf(addr, str, MAX_ADDR_STR_LEN);
|
|
return str;
|
|
}
|
|
|
|
/* The called routines use se_alloc'ed memory */
|
|
gchar*
|
|
se_address_to_str(const address *addr)
|
|
{
|
|
gchar *str;
|
|
|
|
str=se_alloc(MAX_ADDR_STR_LEN);
|
|
address_to_str_buf(addr, str, MAX_ADDR_STR_LEN);
|
|
return str;
|
|
}
|
|
|
|
void
|
|
address_to_str_buf(const address *addr, gchar *buf, int buf_len)
|
|
{
|
|
const guint8 *addrdata;
|
|
struct atalk_ddp_addr ddp_addr;
|
|
|
|
char temp[32];
|
|
char *tempptr = temp;
|
|
|
|
if (!buf || !buf_len)
|
|
return;
|
|
|
|
switch(addr->type){
|
|
case AT_NONE:
|
|
buf[0] = '\0';
|
|
break;
|
|
case AT_ETHER: /* 18 bytes */
|
|
tempptr = bytes_to_hexstr_punct(tempptr, addr->data, 6, ':'); /* 17 bytes */
|
|
break;
|
|
case AT_IPv4:
|
|
ip_to_str_buf(addr->data, buf, buf_len);
|
|
break;
|
|
case AT_IPv6:
|
|
ip6_to_str_buf_len(addr->data, buf, buf_len);
|
|
break;
|
|
case AT_IPX: /* 22 bytes */
|
|
addrdata = addr->data;
|
|
tempptr = bytes_to_hexstr(tempptr, &addrdata[0], 4); /* 8 bytes */
|
|
*tempptr++ = '.'; /* 1 byte */
|
|
tempptr = bytes_to_hexstr(tempptr, &addrdata[4], 6); /* 12 bytes */
|
|
break;
|
|
case AT_SNA:
|
|
sna_fid_to_str_buf(addr, buf, buf_len);
|
|
break;
|
|
case AT_ATALK:
|
|
memcpy(&ddp_addr, addr->data, sizeof ddp_addr);
|
|
atalk_addr_to_str_buf(&ddp_addr, buf, buf_len);
|
|
break;
|
|
case AT_VINES:
|
|
vines_addr_to_str_buf(addr->data, buf, buf_len);
|
|
break;
|
|
case AT_USB:
|
|
usb_addr_to_str_buf(addr->data, buf, buf_len);
|
|
break;
|
|
case AT_OSI:
|
|
print_nsap_net_buf(addr->data, addr->len, buf, buf_len);
|
|
break;
|
|
case AT_ARCNET: /* 5 bytes */
|
|
tempptr = g_stpcpy(tempptr, "0x"); /* 2 bytes */
|
|
tempptr = bytes_to_hexstr(tempptr, addr->data, 1); /* 2 bytes */
|
|
break;
|
|
case AT_FC: /* 9 bytes */
|
|
tempptr = bytes_to_hexstr_punct(tempptr, addr->data, 3, '.'); /* 8 bytes */
|
|
break;
|
|
case AT_SS7PC:
|
|
mtp3_addr_to_str_buf((const mtp3_addr_pc_t *)addr->data, buf, buf_len);
|
|
break;
|
|
case AT_STRINGZ:
|
|
g_strlcpy(buf, addr->data, buf_len);
|
|
break;
|
|
case AT_EUI64: /* 24 bytes */
|
|
tempptr = bytes_to_hexstr_punct(tempptr, addr->data, 8, ':'); /* 23 bytes */
|
|
break;
|
|
case AT_URI: {
|
|
int copy_len = addr->len < (buf_len - 1) ? addr->len : (buf_len - 1);
|
|
memcpy(buf, addr->data, copy_len );
|
|
buf[copy_len] = '\0';
|
|
}
|
|
break;
|
|
case AT_TIPC:
|
|
tipc_addr_to_str_buf(addr->data, buf, buf_len);
|
|
break;
|
|
case AT_IB:
|
|
ib_addr_to_str_buf(addr, buf, buf_len);
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
|
|
/* copy to output buffer */
|
|
if (tempptr != temp) {
|
|
size_t temp_len = (size_t) (tempptr - temp);
|
|
|
|
if (temp_len < (size_t) buf_len) {
|
|
memcpy(buf, temp, temp_len);
|
|
buf[temp_len] = '\0';
|
|
} else
|
|
g_strlcpy(buf, BUF_TOO_SMALL_ERR, buf_len);/* Let the unexpected value alert user */
|
|
}
|
|
}
|
|
|