forked from osmocom/wireshark
3441 lines
90 KiB
C
3441 lines
90 KiB
C
/* addr_resolv.c
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* Routines for network object lookup
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*
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* Laurent Deniel <laurent.deniel@free.fr>
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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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#include "config.h"
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#include <ctype.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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/*
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* Win32 doesn't have SIGALRM (and it's the OS where name lookup calls
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* are most likely to take a long time, given the way address-to-name
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* lookups are done over NBNS).
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*
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* Mac OS X does have SIGALRM, but if you longjmp() out of a name resolution
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* call in a signal handler, you might crash, because the state of the
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* resolution code that sends messages to lookupd might be inconsistent
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* if you jump out of it in middle of a call.
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*
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* In at least some Linux distributions (e.g., RedHat Linux 9), if ADNS
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* is used, we appear to hang in host_name_lookup6() in a gethostbyaddr()
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* call (and possibly in other gethostbyaddr() calls), because there's
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* a mutex lock held in gethostbyaddr() and it doesn't get released
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* if we longjmp out of it.
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*
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* There's no guarantee that longjmp()ing out of name resolution calls
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* will work on *any* platform; OpenBSD got rid of the alarm/longjmp
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* code in tcpdump, to avoid those sorts of problems, and that was
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* picked up by tcpdump.org tcpdump.
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*
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* So, for now, we do not define AVOID_DNS_TIMEOUT. If we get a
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* significantly more complaints about lookups taking a long time,
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* we can reconsider that decision. (Note that tcpdump originally
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* added that for the benefit of systems using NIS to look up host
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* names; that might now be fixed in NIS implementations, for those
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* sites still using NIS rather than DNS for that....)
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*/
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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# include <netinet/in.h>
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#endif
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#ifdef HAVE_NETDB_H
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#include <netdb.h>
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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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#include <signal.h>
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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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#ifndef HAVE_INET_ATON
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# include "wsutil/inet_aton.h"
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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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#if defined(_WIN32) && defined(INET6)
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# include <ws2tcpip.h>
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#endif
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#ifdef HAVE_C_ARES
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# if defined(_WIN32) && !defined(INET6)
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# define socklen_t unsigned int
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# endif
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# include <ares.h>
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# include <ares_version.h>
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#else
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# ifdef HAVE_GNU_ADNS
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# include <errno.h>
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# include <adns.h>
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# if defined(inet_aton) && defined(_WIN32)
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# undef inet_aton
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# endif
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# endif /* HAVE_GNU_ADNS */
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#endif /* HAVE_C_ARES */
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#include <glib.h>
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#include "packet.h"
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#include "addr_and_mask.h"
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#include "ipv6-utils.h"
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#include "addr_resolv.h"
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#include "wsutil/filesystem.h"
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#include <wsutil/report_err.h>
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#include <wsutil/file_util.h>
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#include <wsutil/pint.h>
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#include <epan/strutil.h>
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#include <epan/to_str-int.h>
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#include <epan/prefs.h>
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#include <epan/emem.h>
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#define ENAME_HOSTS "hosts"
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#define ENAME_SUBNETS "subnets"
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#define ENAME_ETHERS "ethers"
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#define ENAME_IPXNETS "ipxnets"
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#define ENAME_MANUF "manuf"
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#define ENAME_SERVICES "services"
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#define HASHETHSIZE 2048
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#define HASHHOSTSIZE 2048
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#define HASHIPXNETSIZE 256
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#define SUBNETLENGTHSIZE 32 /*1-32 inc.*/
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/* hash table used for IPv4 lookup */
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#define HASH_IPV4_ADDRESS(addr) (g_htonl(addr) & (HASHHOSTSIZE - 1))
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typedef struct sub_net_hashipv4 {
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guint addr;
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guint8 flags; /* B0 dummy_entry, B1 resolve, B2 If the address is used in the trace */
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struct sub_net_hashipv4 *next;
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gchar ip[16];
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gchar name[MAXNAMELEN];
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} sub_net_hashipv4_t;
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/* Array of entries of subnets of different lengths */
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typedef struct {
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gsize mask_length; /*1-32*/
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guint32 mask; /* e.g. 255.255.255.*/
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sub_net_hashipv4_t** subnet_addresses; /* Hash table of subnet addresses */
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} subnet_length_entry_t;
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#if 0
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typedef struct serv_port {
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gchar *udp_name;
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gchar *tcp_name;
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gchar *sctp_name;
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gchar *dccp_name;
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} serv_port_t;
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#endif
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/* hash table used for IPX network lookup */
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/* XXX - check goodness of hash function */
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#define HASH_IPX_NET(net) ((net) & (HASHIPXNETSIZE - 1))
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typedef struct hashipxnet {
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guint addr;
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struct hashipxnet *next;
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gchar name[MAXNAMELEN];
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} hashipxnet_t;
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/* hash tables used for ethernet and manufacturer lookup */
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#define HASHETHER_STATUS_UNRESOLVED 1
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#define HASHETHER_STATUS_RESOLVED_DUMMY 2
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#define HASHETHER_STATUS_RESOLVED_NAME 3
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#if 0
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typedef struct hashether {
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struct hashether *next;
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guint status; /* (See above) */
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guint8 addr[6];
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char hexaddr[6*3];
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char resolved_name[MAXNAMELEN];
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} hashether_t;
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#endif
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/* internal ethernet type */
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typedef struct _ether
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{
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guint8 addr[6];
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char name[MAXNAMELEN];
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} ether_t;
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/* internal ipxnet type */
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typedef struct _ipxnet
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{
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guint addr;
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char name[MAXNAMELEN];
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} ipxnet_t;
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static GHashTable *ipxnet_hash_table = NULL;
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static GHashTable *ipv4_hash_table = NULL;
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static GHashTable *ipv6_hash_table = NULL;
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static GSList *manually_resolved_ipv4_list = NULL;
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static GSList *manually_resolved_ipv6_list = NULL;
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typedef struct _resolved_ipv4
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{
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guint32 host_addr;
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char name[MAXNAMELEN];
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} resolved_ipv4_t;
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typedef struct _resolved_ipv6
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{
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struct e_in6_addr ip6_addr;
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char name[MAXNAMELEN];
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} resolved_ipv6_t;
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static addrinfo_lists_t addrinfo_lists = { NULL, NULL};
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static gchar *cb_service;
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static port_type cb_proto = PT_NONE;
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static GHashTable *manuf_hashtable = NULL;
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static GHashTable *wka_hashtable = NULL;
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static GHashTable *eth_hashtable = NULL;
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static GHashTable *serv_port_hashtable = NULL;
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static subnet_length_entry_t subnet_length_entries[SUBNETLENGTHSIZE]; /* Ordered array of entries */
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static gboolean have_subnet_entry = FALSE;
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static gboolean new_resolved_objects = FALSE;
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static GPtrArray* extra_hosts_files = NULL;
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static hashether_t *add_eth_name(const guint8 *addr, const gchar *name);
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static void add_serv_port_cb(const guint32 port);
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/* http://eternallyconfuzzled.com/tuts/algorithms/jsw_tut_hashing.aspx#existing
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* One-at-a-Time hash
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*/
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static guint32
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ipv6_oat_hash(gconstpointer key)
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{
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int len = 16;
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const unsigned char *p = (const unsigned char *)key;
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guint32 h = 0;
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int i;
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for ( i = 0; i < len; i++ ) {
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h += p[i];
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h += ( h << 10 );
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h ^= ( h >> 6 );
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}
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h += ( h << 3 );
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h ^= ( h >> 11 );
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h += ( h << 15 );
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return h;
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}
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static gboolean
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ipv6_equal(gconstpointer v1, gconstpointer v2)
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{
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if( memcmp(v1, v2, sizeof (struct e_in6_addr)) == 0 ) {
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return TRUE;
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}
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return FALSE;
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}
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/*
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* Flag controlling what names to resolve.
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*/
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e_addr_resolve gbl_resolv_flags = {TRUE, FALSE, FALSE, TRUE, TRUE, FALSE};
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#if defined(HAVE_C_ARES) || defined(HAVE_GNU_ADNS)
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static guint name_resolve_concurrency = 500;
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#endif
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/*
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* Global variables (can be changed in GUI sections)
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* XXX - they could be changed in GUI code, but there's currently no
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* GUI code to change them.
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*/
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gchar *g_ethers_path = NULL; /* global ethers file */
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gchar *g_pethers_path = NULL; /* personal ethers file */
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gchar *g_ipxnets_path = NULL; /* global ipxnets file */
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gchar *g_pipxnets_path = NULL; /* personal ipxnets file */
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gchar *g_services_path = NULL; /* global services file */
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gchar *g_pservices_path = NULL; /* personal services file */
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/* first resolving call */
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/* c-ares */
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#ifdef HAVE_C_ARES
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/*
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* Submitted queries trigger a callback (c_ares_ghba_cb()).
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* Queries are added to c_ares_queue_head. During processing, queries are
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* popped off the front of c_ares_queue_head and submitted using
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* ares_gethostbyaddr().
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* The callback processes the response, then frees the request.
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*/
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#define ASYNC_DNS
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typedef struct _async_dns_queue_msg
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{
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union {
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guint32 ip4;
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struct e_in6_addr ip6;
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} addr;
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int family;
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} async_dns_queue_msg_t;
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typedef struct _async_hostent {
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int addr_size;
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int copied;
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void *addrp;
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} async_hostent_t;
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#if ( ( ARES_VERSION_MAJOR < 1 ) \
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|| ( 1 == ARES_VERSION_MAJOR && ARES_VERSION_MINOR < 5 ) )
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static void c_ares_ghba_cb(void *arg, int status, struct hostent *hostent);
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#else
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static void c_ares_ghba_cb(void *arg, int status, int timeouts _U_, struct hostent *hostent);
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#endif
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ares_channel ghba_chan; /* ares_gethostbyaddr -- Usually non-interactive, no timeout */
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ares_channel ghbn_chan; /* ares_gethostbyname -- Usually interactive, timeout */
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#else
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/* GNU ADNS */
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#ifdef HAVE_GNU_ADNS
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#define ASYNC_DNS
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/*
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* Submitted queries have to be checked individually using adns_check().
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* Queries are added to adns_queue_head. During processing, the list is
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* iterated twice: once to request queries up to the concurrency limit,
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* and once to check the status of each query.
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*/
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adns_state ads;
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typedef struct _async_dns_queue_msg
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{
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gboolean submitted;
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guint32 ip4_addr;
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int type;
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adns_query query;
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} async_dns_queue_msg_t;
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#endif /* HAVE_GNU_ADNS */
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#endif /* HAVE_C_ARES */
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#ifdef ASYNC_DNS
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static gboolean async_dns_initialized = FALSE;
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static guint async_dns_in_flight = 0;
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static GList *async_dns_queue_head = NULL;
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/* push a dns request */
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static void
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add_async_dns_ipv4(int type, guint32 addr)
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{
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async_dns_queue_msg_t *msg;
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msg = g_new(async_dns_queue_msg_t,1);
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#ifdef HAVE_C_ARES
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msg->family = type;
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msg->addr.ip4 = addr;
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#else
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msg->type = type;
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msg->ip4_addr = addr;
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msg->submitted = FALSE;
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#endif
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async_dns_queue_head = g_list_append(async_dns_queue_head, (gpointer) msg);
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}
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#endif
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typedef struct {
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guint32 mask;
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gsize mask_length;
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const gchar* name; /* Shallow copy */
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} subnet_entry_t;
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/*
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* Miscellaneous functions
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*/
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static int
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fgetline(char **buf, int *size, FILE *fp)
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{
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int len;
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int c;
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if (fp == NULL || buf == NULL)
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return -1;
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if (*buf == NULL) {
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if (*size == 0)
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*size = BUFSIZ;
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*buf = (char *)g_malloc(*size);
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}
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g_assert(*buf);
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g_assert(*size > 0);
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if (feof(fp))
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return -1;
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len = 0;
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while ((c = getc(fp)) != EOF && c != '\r' && c != '\n') {
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if (len+1 >= *size) {
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*buf = (char *)g_realloc(*buf, *size += BUFSIZ);
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}
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(*buf)[len++] = c;
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}
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if (len == 0 && c == EOF)
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return -1;
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(*buf)[len] = '\0';
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return len;
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} /* fgetline */
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/*
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* Local function definitions
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*/
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static subnet_entry_t subnet_lookup(const guint32 addr);
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static void subnet_entry_set(guint32 subnet_addr, const guint32 mask_length, const gchar* name);
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static void
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add_service_name(port_type proto, const guint port, const char *service_name)
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{
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serv_port_t *serv_port_table;
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int *key;
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key = (int *)g_new(int, 1);
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*key = port;
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serv_port_table = (serv_port_t *)g_hash_table_lookup(serv_port_hashtable, &port);
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if (serv_port_table == NULL) {
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serv_port_table = g_new0(serv_port_t,1);
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g_hash_table_insert(serv_port_hashtable, key, serv_port_table);
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}
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else {
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g_free(key);
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}
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|
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switch(proto){
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case PT_TCP:
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g_free(serv_port_table->tcp_name);
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serv_port_table->tcp_name = g_strdup(service_name);
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break;
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case PT_UDP:
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g_free(serv_port_table->udp_name);
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serv_port_table->udp_name = g_strdup(service_name);
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break;
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case PT_SCTP:
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g_free(serv_port_table->sctp_name);
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serv_port_table->sctp_name = g_strdup(service_name);
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break;
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case PT_DCCP:
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g_free(serv_port_table->dccp_name);
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serv_port_table->dccp_name = g_strdup(service_name);
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break;
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default:
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return;
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/* Should not happen */
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}
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|
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new_resolved_objects = TRUE;
|
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}
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|
|
|
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static void
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parse_service_line (char *line)
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{
|
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/*
|
|
* See the services(4) or services(5) man page for services file format
|
|
* (not available on all systems).
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|
*/
|
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|
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gchar *cp;
|
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gchar *service;
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gchar *port;
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port_type proto;
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|
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range_t *port_rng = NULL;
|
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guint32 max_port = MAX_UDP_PORT;
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|
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if ((cp = strchr(line, '#')))
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*cp = '\0';
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|
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if ((cp = strtok(line, " \t")) == NULL)
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return;
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service = cp;
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|
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if ((cp = strtok(NULL, " \t")) == NULL)
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return;
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port = cp;
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|
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if (strtok(cp, "/") == NULL)
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return;
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|
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if ((cp = strtok(NULL, "/")) == NULL)
|
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return;
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|
|
/* seems we got all interesting things from the file */
|
|
if(strcmp(cp, "tcp") == 0) {
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max_port = MAX_TCP_PORT;
|
|
proto = PT_TCP;
|
|
}
|
|
else if(strcmp(cp, "udp") == 0) {
|
|
max_port = MAX_UDP_PORT;
|
|
proto = PT_UDP;
|
|
}
|
|
else if(strcmp(cp, "sctp") == 0) {
|
|
max_port = MAX_SCTP_PORT;
|
|
proto = PT_SCTP;
|
|
}
|
|
else if(strcmp(cp, "dccp") == 0) {
|
|
max_port = MAX_DCCP_PORT;
|
|
proto = PT_DCCP;
|
|
} else {
|
|
return;
|
|
}
|
|
|
|
if(CVT_NO_ERROR != range_convert_str(&port_rng, port, max_port) ) {
|
|
/* some assertion here? */
|
|
return;
|
|
}
|
|
|
|
cb_service = service;
|
|
cb_proto = proto;
|
|
range_foreach(port_rng, add_serv_port_cb);
|
|
g_free (port_rng);
|
|
cb_proto = PT_NONE;
|
|
} /* parse_service_line */
|
|
|
|
|
|
static void
|
|
add_serv_port_cb(const guint32 port)
|
|
{
|
|
if ( port ) {
|
|
add_service_name(cb_proto, port, cb_service);
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
parse_services_file(const char * path)
|
|
{
|
|
FILE *serv_p;
|
|
static int size = 0;
|
|
static char *buf = NULL;
|
|
|
|
/* services hash table initialization */
|
|
serv_p = ws_fopen(path, "r");
|
|
|
|
if (serv_p == NULL)
|
|
return;
|
|
|
|
while (fgetline(&buf, &size, serv_p) >= 0) {
|
|
parse_service_line (buf);
|
|
}
|
|
|
|
fclose(serv_p);
|
|
}
|
|
|
|
/* -----------------
|
|
* unsigned integer to ascii
|
|
*/
|
|
static gchar *
|
|
ep_utoa(guint port)
|
|
{
|
|
gchar *bp = (gchar *)ep_alloc(MAXNAMELEN);
|
|
|
|
/* XXX, guint32_to_str() ? */
|
|
guint32_to_str_buf(port, bp, MAXNAMELEN);
|
|
return bp;
|
|
}
|
|
|
|
|
|
static gchar
|
|
*serv_name_lookup(const guint port, const port_type proto)
|
|
{
|
|
serv_port_t *serv_port_table;
|
|
gchar *name;
|
|
|
|
serv_port_table = (serv_port_t *)g_hash_table_lookup(serv_port_hashtable, &port);
|
|
|
|
if(serv_port_table){
|
|
/* Set which table we should look up port in */
|
|
switch(proto) {
|
|
case PT_UDP:
|
|
if(serv_port_table->udp_name){
|
|
return serv_port_table->udp_name;
|
|
}
|
|
break;
|
|
case PT_TCP:
|
|
if(serv_port_table->tcp_name){
|
|
return serv_port_table->tcp_name;
|
|
}
|
|
break;
|
|
case PT_SCTP:
|
|
if(serv_port_table->sctp_name){
|
|
return serv_port_table->sctp_name;
|
|
}
|
|
break;
|
|
case PT_DCCP:
|
|
if(serv_port_table->dccp_name){
|
|
return serv_port_table->dccp_name;
|
|
}
|
|
break;
|
|
default:
|
|
/* not yet implemented */
|
|
return NULL;
|
|
/*NOTREACHED*/
|
|
} /* proto */
|
|
}
|
|
|
|
/* getservbyport() was used here but it was to expensive, if the functionality is desired
|
|
* it would be better to pre parse etc/services or C:\Windows\System32\drivers\etc at
|
|
* startup
|
|
*/
|
|
name = (gchar*)g_malloc(16);
|
|
guint32_to_str_buf(port, name, 16);
|
|
|
|
if(serv_port_table == NULL){
|
|
int *key;
|
|
|
|
key = (int *)g_new(int, 1);
|
|
*key = port;
|
|
serv_port_table = g_new0(serv_port_t,1);
|
|
g_hash_table_insert(serv_port_hashtable, key, serv_port_table);
|
|
}
|
|
switch(proto) {
|
|
case PT_UDP:
|
|
serv_port_table->udp_name = name;
|
|
break;
|
|
case PT_TCP:
|
|
serv_port_table->tcp_name = name;
|
|
break;
|
|
case PT_SCTP:
|
|
serv_port_table->sctp_name = name;
|
|
break;
|
|
case PT_DCCP:
|
|
serv_port_table->dccp_name = name;
|
|
break;
|
|
default:
|
|
return NULL;
|
|
/*NOTREACHED*/
|
|
}
|
|
return name;
|
|
|
|
} /* serv_name_lookup */
|
|
|
|
static void
|
|
destroy_serv_port(gpointer data)
|
|
{
|
|
serv_port_t *table = (serv_port_t*)data;
|
|
g_free(table->udp_name);
|
|
g_free(table->tcp_name);
|
|
g_free(table->sctp_name);
|
|
g_free(table->dccp_name);
|
|
g_free(table);
|
|
}
|
|
|
|
static void
|
|
initialize_services(void)
|
|
{
|
|
#ifdef _WIN32
|
|
char *hostspath;
|
|
char *sysroot;
|
|
static char rootpath_nt[] = "\\system32\\drivers\\etc\\services";
|
|
#endif /* _WIN32 */
|
|
|
|
/* the hash table won't ignore duplicates, so use the personal path first */
|
|
g_assert(serv_port_hashtable == NULL);
|
|
serv_port_hashtable = g_hash_table_new_full(g_int_hash, g_int_equal, g_free, destroy_serv_port);
|
|
|
|
/* Read the system services file first */
|
|
#ifdef _WIN32
|
|
|
|
sysroot = getenv_utf8("WINDIR");
|
|
if (sysroot != NULL) {
|
|
/*
|
|
* The file should be under WINDIR.
|
|
* If this is Windows NT (NT 4.0,2K,XP,Server2K3), it's in
|
|
* %WINDIR%\system32\drivers\etc\services.
|
|
*/
|
|
hostspath = g_strconcat(sysroot, rootpath_nt, NULL);
|
|
parse_services_file(hostspath);
|
|
g_free(hostspath);
|
|
}
|
|
#else
|
|
parse_services_file("/etc/services");
|
|
|
|
#endif /* _WIN32 */
|
|
|
|
/* set personal services path */
|
|
if (g_pservices_path == NULL)
|
|
g_pservices_path = get_persconffile_path(ENAME_SERVICES, FALSE);
|
|
|
|
parse_services_file(g_pservices_path);
|
|
|
|
/* Compute the pathname of the services file. */
|
|
if (g_services_path == NULL) {
|
|
g_services_path = get_datafile_path(ENAME_SERVICES);
|
|
}
|
|
|
|
parse_services_file(g_services_path);
|
|
|
|
} /* initialize_services */
|
|
|
|
static void
|
|
service_name_lookup_cleanup(void)
|
|
{
|
|
if(serv_port_hashtable){
|
|
g_hash_table_destroy(serv_port_hashtable);
|
|
serv_port_hashtable = NULL;
|
|
}
|
|
}
|
|
|
|
/* Fill in an IP4 structure with info from subnets file or just with the
|
|
* string form of the address.
|
|
*/
|
|
static void
|
|
fill_dummy_ip4(const guint addr, hashipv4_t* volatile tp)
|
|
{
|
|
subnet_entry_t subnet_entry;
|
|
|
|
if ((tp->flags & DUMMY_ADDRESS_ENTRY) == DUMMY_ADDRESS_ENTRY)
|
|
return; /* already done */
|
|
|
|
tp->flags = tp->flags | DUMMY_ADDRESS_ENTRY; /* Overwrite if we get async DNS reply */
|
|
|
|
/* Do we have a subnet for this address? */
|
|
subnet_entry = subnet_lookup(addr);
|
|
if(0 != subnet_entry.mask) {
|
|
/* Print name, then '.' then IP address after subnet mask */
|
|
guint32 host_addr;
|
|
gchar buffer[MAX_IP_STR_LEN];
|
|
gchar* paddr;
|
|
gsize i;
|
|
|
|
host_addr = addr & (~(guint32)subnet_entry.mask);
|
|
ip_to_str_buf((guint8 *)&host_addr, buffer, MAX_IP_STR_LEN);
|
|
paddr = buffer;
|
|
|
|
/* Skip to first octet that is not totally masked
|
|
* If length of mask is 32, we chomp the whole address.
|
|
* If the address string starts '.' (should not happen?),
|
|
* we skip that '.'.
|
|
*/
|
|
i = subnet_entry.mask_length / 8;
|
|
while(*(paddr) != '\0' && i > 0) {
|
|
if(*(++paddr) == '.') {
|
|
--i;
|
|
}
|
|
}
|
|
|
|
/* There are more efficient ways to do this, but this is safe if we
|
|
* trust g_snprintf and MAXNAMELEN
|
|
*/
|
|
g_snprintf(tp->name, MAXNAMELEN, "%s%s", subnet_entry.name, paddr);
|
|
} else {
|
|
ip_to_str_buf((const guint8 *)&addr, tp->name, MAXNAMELEN);
|
|
}
|
|
}
|
|
|
|
#ifdef HAVE_C_ARES
|
|
|
|
static void
|
|
c_ares_ghba_cb(
|
|
void *arg,
|
|
int status,
|
|
#if ( ( ARES_VERSION_MAJOR < 1 ) \
|
|
|| ( 1 == ARES_VERSION_MAJOR && ARES_VERSION_MINOR < 5 ) )
|
|
struct hostent *he
|
|
#else
|
|
int timeouts _U_,
|
|
struct hostent *he
|
|
#endif
|
|
) {
|
|
|
|
async_dns_queue_msg_t *caqm = (async_dns_queue_msg_t *)arg;
|
|
char **p;
|
|
|
|
if (!caqm) return;
|
|
/* XXX, what to do if async_dns_in_flight == 0? */
|
|
async_dns_in_flight--;
|
|
|
|
if (status == ARES_SUCCESS) {
|
|
for (p = he->h_addr_list; *p != NULL; p++) {
|
|
switch(caqm->family) {
|
|
case AF_INET:
|
|
add_ipv4_name(caqm->addr.ip4, he->h_name);
|
|
break;
|
|
case AF_INET6:
|
|
add_ipv6_name(&caqm->addr.ip6, he->h_name);
|
|
break;
|
|
default:
|
|
/* Throw an exception? */
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
g_free(caqm);
|
|
}
|
|
#endif /* HAVE_C_ARES */
|
|
|
|
/* --------------- */
|
|
static hashipv4_t *
|
|
new_ipv4(const guint addr)
|
|
{
|
|
hashipv4_t *tp = g_new(hashipv4_t, 1);
|
|
tp->addr = addr;
|
|
tp->flags = 0;
|
|
ip_to_str_buf((const guint8 *)&addr, tp->ip, sizeof(tp->ip));
|
|
return tp;
|
|
}
|
|
|
|
static hashipv4_t *
|
|
host_lookup(const guint addr, gboolean *found)
|
|
{
|
|
hashipv4_t * volatile tp;
|
|
|
|
*found = TRUE;
|
|
|
|
tp = (hashipv4_t *)g_hash_table_lookup(ipv4_hash_table, GUINT_TO_POINTER(addr));
|
|
if(tp == NULL){
|
|
tp = new_ipv4(addr);
|
|
g_hash_table_insert(ipv4_hash_table, GUINT_TO_POINTER(addr), tp);
|
|
}else{
|
|
if ((tp->flags & DUMMY_AND_RESOLVE_FLGS) == DUMMY_ADDRESS_ENTRY){
|
|
goto try_resolv;
|
|
}
|
|
if ((tp->flags & DUMMY_ADDRESS_ENTRY) == DUMMY_ADDRESS_ENTRY){
|
|
*found = FALSE;
|
|
}
|
|
return tp;
|
|
}
|
|
|
|
try_resolv:
|
|
if (gbl_resolv_flags.network_name && gbl_resolv_flags.use_external_net_name_resolver) {
|
|
tp->flags = tp->flags|TRIED_RESOLVE_ADDRESS;
|
|
|
|
#ifdef ASYNC_DNS
|
|
if (gbl_resolv_flags.concurrent_dns &&
|
|
name_resolve_concurrency > 0 &&
|
|
async_dns_initialized) {
|
|
add_async_dns_ipv4(AF_INET, addr);
|
|
/* XXX found is set to TRUE, which seems a bit odd, but I'm not
|
|
* going to risk changing the semantics.
|
|
*/
|
|
fill_dummy_ip4(addr, tp);
|
|
return tp;
|
|
}
|
|
#endif /* ASYNC_DNS */
|
|
|
|
/* unknown host or DNS timeout */
|
|
|
|
}
|
|
|
|
*found = FALSE;
|
|
|
|
fill_dummy_ip4(addr, tp);
|
|
return tp;
|
|
|
|
} /* host_lookup */
|
|
|
|
/* --------------- */
|
|
static hashipv6_t *
|
|
new_ipv6(const struct e_in6_addr *addr)
|
|
{
|
|
hashipv6_t *tp = g_new(hashipv6_t,1);
|
|
tp->addr = *addr;
|
|
tp->flags = 0;
|
|
ip6_to_str_buf(addr, tp->ip6);
|
|
return tp;
|
|
}
|
|
|
|
/* ------------------------------------ */
|
|
static hashipv6_t *
|
|
host_lookup6(const struct e_in6_addr *addr, gboolean *found)
|
|
{
|
|
hashipv6_t * volatile tp;
|
|
#ifdef INET6
|
|
#ifdef HAVE_C_ARES
|
|
async_dns_queue_msg_t *caqm;
|
|
#endif /* HAVE_C_ARES */
|
|
#endif /* INET6 */
|
|
|
|
*found = TRUE;
|
|
|
|
tp = (hashipv6_t *)g_hash_table_lookup(ipv6_hash_table, addr);
|
|
if(tp == NULL){
|
|
struct e_in6_addr *addr_key;
|
|
|
|
addr_key = g_new(struct e_in6_addr,1);
|
|
tp = new_ipv6(addr);
|
|
memcpy(addr_key, addr, 16);
|
|
g_hash_table_insert(ipv6_hash_table, addr_key, tp);
|
|
}else{
|
|
if ((tp->flags & DUMMY_AND_RESOLVE_FLGS) == DUMMY_ADDRESS_ENTRY){
|
|
goto try_resolv;
|
|
}
|
|
if ((tp->flags & DUMMY_ADDRESS_ENTRY) == DUMMY_ADDRESS_ENTRY){
|
|
*found = FALSE;
|
|
}
|
|
return tp;
|
|
}
|
|
|
|
try_resolv:
|
|
if (gbl_resolv_flags.network_name &&
|
|
gbl_resolv_flags.use_external_net_name_resolver) {
|
|
tp->flags = tp->flags|TRIED_RESOLVE_ADDRESS;
|
|
#ifdef INET6
|
|
|
|
#ifdef HAVE_C_ARES
|
|
if ((gbl_resolv_flags.concurrent_dns) &&
|
|
name_resolve_concurrency > 0 &&
|
|
async_dns_initialized) {
|
|
caqm = g_new(async_dns_queue_msg_t,1);
|
|
caqm->family = AF_INET6;
|
|
memcpy(&caqm->addr.ip6, addr, sizeof(caqm->addr.ip6));
|
|
async_dns_queue_head = g_list_append(async_dns_queue_head, (gpointer) caqm);
|
|
|
|
/* XXX found is set to TRUE, which seems a bit odd, but I'm not
|
|
* going to risk changing the semantics.
|
|
*/
|
|
if ((tp->flags & DUMMY_ADDRESS_ENTRY) == 0){
|
|
g_strlcpy(tp->name, tp->ip6, MAXNAMELEN);
|
|
ip6_to_str_buf(addr, tp->name);
|
|
tp->flags = tp->flags | DUMMY_ADDRESS_ENTRY;
|
|
}
|
|
return tp;
|
|
}
|
|
#endif /* HAVE_C_ARES */
|
|
|
|
#endif /* INET6 */
|
|
}
|
|
|
|
/* unknown host or DNS timeout */
|
|
if ((tp->flags & DUMMY_ADDRESS_ENTRY) == 0) {
|
|
tp->flags = tp->flags | DUMMY_ADDRESS_ENTRY;
|
|
g_strlcpy(tp->name, tp->ip6, MAXNAMELEN);
|
|
}
|
|
*found = FALSE;
|
|
return tp;
|
|
|
|
} /* host_lookup6 */
|
|
|
|
static const gchar *
|
|
solve_address_to_name(const address *addr)
|
|
{
|
|
switch (addr->type) {
|
|
|
|
case AT_ETHER:
|
|
return get_ether_name((const guint8 *)addr->data);
|
|
|
|
case AT_IPv4: {
|
|
guint32 ip4_addr;
|
|
memcpy(&ip4_addr, addr->data, sizeof ip4_addr);
|
|
return get_hostname(ip4_addr);
|
|
}
|
|
|
|
case AT_IPv6: {
|
|
struct e_in6_addr ip6_addr;
|
|
memcpy(&ip6_addr.bytes, addr->data, sizeof ip6_addr.bytes);
|
|
return get_hostname6(&ip6_addr);
|
|
}
|
|
|
|
case AT_STRINGZ:
|
|
return (const gchar *)addr->data;
|
|
|
|
default:
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Ethernet / manufacturer resolution
|
|
*
|
|
* The following functions implement ethernet address resolution and
|
|
* ethers files parsing (see ethers(4)).
|
|
*
|
|
* The manuf file has the same format as ethers(4) except that names are
|
|
* truncated to MAXMANUFLEN-1 (8) characters and that an address contains
|
|
* only 3 bytes (instead of 6).
|
|
*
|
|
* Notes:
|
|
*
|
|
* I decide to not use the existing functions (see ethers(3) on some
|
|
* operating systems) for the following reasons:
|
|
* - performance gains (use of hash tables and some other enhancements),
|
|
* - use of two ethers files (system-wide and per user),
|
|
* - avoid the use of NIS maps,
|
|
* - lack of these functions on some systems.
|
|
*
|
|
* So the following functions do _not_ behave as the standard ones.
|
|
*
|
|
* -- Laurent.
|
|
*/
|
|
|
|
|
|
/*
|
|
* If "manuf_file" is FALSE, parse a 6-byte MAC address.
|
|
* If "manuf_file" is TRUE, parse an up-to-6-byte sequence with an optional
|
|
* mask.
|
|
*/
|
|
static gboolean
|
|
parse_ether_address(const char *cp, ether_t *eth, unsigned int *mask,
|
|
const gboolean manuf_file)
|
|
{
|
|
int i;
|
|
unsigned long num;
|
|
char *p;
|
|
char sep = '\0';
|
|
|
|
for (i = 0; i < 6; i++) {
|
|
/* Get a hex number, 1 or 2 digits, no sign characters allowed. */
|
|
if (!isxdigit((unsigned char)*cp))
|
|
return FALSE;
|
|
num = strtoul(cp, &p, 16);
|
|
if (p == cp)
|
|
return FALSE; /* failed */
|
|
if (num > 0xFF)
|
|
return FALSE; /* not a valid octet */
|
|
eth->addr[i] = (guint8) num;
|
|
cp = p; /* skip past the number */
|
|
|
|
/* OK, what character terminated the octet? */
|
|
if (*cp == '/') {
|
|
/* "/" - this has a mask. */
|
|
if (!manuf_file) {
|
|
/* Entries with masks are allowed only in the "manuf" files. */
|
|
return FALSE;
|
|
}
|
|
cp++; /* skip past the '/' to get to the mask */
|
|
if (!isdigit((unsigned char)*cp))
|
|
return FALSE; /* no sign allowed */
|
|
num = strtoul(cp, &p, 10);
|
|
if (p == cp)
|
|
return FALSE; /* failed */
|
|
cp = p; /* skip past the number */
|
|
if (*cp != '\0' && !isspace((unsigned char)*cp))
|
|
return FALSE; /* bogus terminator */
|
|
if (num == 0 || num >= 48)
|
|
return FALSE; /* bogus mask */
|
|
/* Mask out the bits not covered by the mask */
|
|
*mask = (int)num;
|
|
for (i = 0; num >= 8; i++, num -= 8)
|
|
; /* skip octets entirely covered by the mask */
|
|
/* Mask out the first masked octet */
|
|
eth->addr[i] &= (0xFF << (8 - num));
|
|
i++;
|
|
/* Mask out completely-masked-out octets */
|
|
for (; i < 6; i++)
|
|
eth->addr[i] = 0;
|
|
return TRUE;
|
|
}
|
|
if (*cp == '\0') {
|
|
/* We're at the end of the address, and there's no mask. */
|
|
if (i == 2) {
|
|
/* We got 3 bytes, so this is a manufacturer ID. */
|
|
if (!manuf_file) {
|
|
/* Manufacturer IDs are only allowed in the "manuf"
|
|
files. */
|
|
return FALSE;
|
|
}
|
|
/* Indicate that this is a manufacturer ID (0 is not allowed
|
|
as a mask). */
|
|
*mask = 0;
|
|
return TRUE;
|
|
}
|
|
|
|
if (i == 5) {
|
|
/* We got 6 bytes, so this is a MAC address.
|
|
If we're reading one of the "manuf" files, indicate that
|
|
this is a MAC address (48 is not allowed as a mask). */
|
|
if (manuf_file)
|
|
*mask = 48;
|
|
return TRUE;
|
|
}
|
|
|
|
/* We didn't get 3 or 6 bytes, and there's no mask; this is
|
|
illegal. */
|
|
return FALSE;
|
|
} else {
|
|
if (sep == '\0') {
|
|
/* We don't know the separator used in this number; it can either
|
|
be ':', '-', or '.'. */
|
|
if (*cp != ':' && *cp != '-' && *cp != '.')
|
|
return FALSE;
|
|
sep = *cp; /* subsequent separators must be the same */
|
|
} else {
|
|
/* It has to be the same as the first separator */
|
|
if (*cp != sep)
|
|
return FALSE;
|
|
}
|
|
}
|
|
cp++;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static int
|
|
parse_ether_line(char *line, ether_t *eth, unsigned int *mask,
|
|
const gboolean manuf_file)
|
|
{
|
|
/*
|
|
* See the ethers(4) or ethers(5) man page for ethers file format
|
|
* (not available on all systems).
|
|
* We allow both ethernet address separators (':' and '-'),
|
|
* as well as Wireshark's '.' separator.
|
|
*/
|
|
|
|
gchar *cp;
|
|
|
|
if ((cp = strchr(line, '#')))
|
|
*cp = '\0';
|
|
|
|
if ((cp = strtok(line, " \t")) == NULL)
|
|
return -1;
|
|
|
|
if (!parse_ether_address(cp, eth, mask, manuf_file))
|
|
return -1;
|
|
|
|
if ((cp = strtok(NULL, " \t")) == NULL)
|
|
return -1;
|
|
|
|
g_strlcpy(eth->name, cp, MAXNAMELEN);
|
|
|
|
return 0;
|
|
|
|
} /* parse_ether_line */
|
|
|
|
static FILE *eth_p = NULL;
|
|
|
|
static void
|
|
set_ethent(char *path)
|
|
{
|
|
if (eth_p)
|
|
rewind(eth_p);
|
|
else
|
|
eth_p = ws_fopen(path, "r");
|
|
}
|
|
|
|
static void
|
|
end_ethent(void)
|
|
{
|
|
if (eth_p) {
|
|
fclose(eth_p);
|
|
eth_p = NULL;
|
|
}
|
|
}
|
|
|
|
static ether_t *
|
|
get_ethent(unsigned int *mask, const gboolean manuf_file)
|
|
{
|
|
|
|
static ether_t eth;
|
|
static int size = 0;
|
|
static char *buf = NULL;
|
|
|
|
if (eth_p == NULL)
|
|
return NULL;
|
|
|
|
while (fgetline(&buf, &size, eth_p) >= 0) {
|
|
if (parse_ether_line(buf, ð, mask, manuf_file) == 0) {
|
|
return ð
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
|
|
} /* get_ethent */
|
|
|
|
#if 0
|
|
static ether_t *
|
|
get_ethbyname(const gchar *name)
|
|
{
|
|
ether_t *eth;
|
|
|
|
set_ethent(g_pethers_path);
|
|
|
|
while (((eth = get_ethent(NULL, FALSE)) != NULL) && strncmp(name, eth->name, MAXNAMELEN) != 0)
|
|
;
|
|
|
|
if (eth == NULL) {
|
|
end_ethent();
|
|
|
|
set_ethent(g_ethers_path);
|
|
|
|
while (((eth = get_ethent(NULL, FALSE)) != NULL) && strncmp(name, eth->name, MAXNAMELEN) != 0)
|
|
;
|
|
|
|
end_ethent();
|
|
}
|
|
|
|
return eth;
|
|
|
|
} /* get_ethbyname */
|
|
#endif
|
|
|
|
static ether_t *
|
|
get_ethbyaddr(const guint8 *addr)
|
|
{
|
|
|
|
ether_t *eth;
|
|
|
|
set_ethent(g_pethers_path);
|
|
|
|
while (((eth = get_ethent(NULL, FALSE)) != NULL) && memcmp(addr, eth->addr, 6) != 0)
|
|
;
|
|
|
|
if (eth == NULL) {
|
|
end_ethent();
|
|
|
|
set_ethent(g_ethers_path);
|
|
|
|
while (((eth = get_ethent(NULL, FALSE)) != NULL) && memcmp(addr, eth->addr, 6) != 0)
|
|
;
|
|
|
|
end_ethent();
|
|
}
|
|
|
|
return eth;
|
|
|
|
} /* get_ethbyaddr */
|
|
|
|
|
|
static void
|
|
add_manuf_name(const guint8 *addr, unsigned int mask, gchar *name)
|
|
{
|
|
guint8 *wka_key;
|
|
int *manuf_key;
|
|
|
|
/*
|
|
* XXX - can we use Standard Annotation Language annotations to
|
|
* note that mask, as returned by parse_ethe)r_address() (and thus
|
|
* by the routines that call it, and thus passed to us) cannot be > 48,
|
|
* or is SAL too weak to express that?
|
|
*/
|
|
if (mask >= 48) {
|
|
/* This is a well-known MAC address; just add this to the Ethernet
|
|
hash table */
|
|
add_eth_name(addr, name);
|
|
return;
|
|
}
|
|
|
|
if (mask == 0) {
|
|
/* This is a manufacturer ID; add it to the manufacturer ID hash table */
|
|
|
|
/* manuf needs only the 3 most significant octets of the ethernet address */
|
|
manuf_key = (int *)g_new(int, 1);
|
|
*manuf_key = (int)((addr[2] << 16) + (addr[1] << 8) + addr[0]);
|
|
|
|
g_hash_table_insert(manuf_hashtable, manuf_key, g_strdup(name));
|
|
return;
|
|
} /* mask == 0 */
|
|
|
|
/* This is a range of well-known addresses; add it to the appropriate
|
|
well-known-address table, creating that table if necessary. */
|
|
|
|
wka_key = (guint8 *)g_malloc(6);
|
|
memcpy(wka_key, addr, 6);
|
|
|
|
g_hash_table_insert(wka_hashtable, wka_key, g_strdup(name));
|
|
|
|
} /* add_manuf_name */
|
|
|
|
static gchar *
|
|
manuf_name_lookup(const guint8 *addr)
|
|
{
|
|
gint32 manuf_key = 0;
|
|
guint8 oct;
|
|
gchar *name;
|
|
|
|
/* manuf needs only the 3 most significant octets of the ethernet address */
|
|
manuf_key = addr[0];
|
|
manuf_key = manuf_key<<8;
|
|
oct = addr[1];
|
|
manuf_key = manuf_key | oct;
|
|
manuf_key = manuf_key<<8;
|
|
oct = addr[2];
|
|
manuf_key = manuf_key | oct;
|
|
|
|
|
|
/* first try to find a "perfect match" */
|
|
name = (gchar *)g_hash_table_lookup(manuf_hashtable, &manuf_key);
|
|
if(name != NULL){
|
|
return name;
|
|
}
|
|
|
|
/* Mask out the broadcast/multicast flag but not the locally
|
|
* administered flag as localy administered means: not assigend
|
|
* by the IEEE but the local administrator instead.
|
|
* 0x01 multicast / broadcast bit
|
|
* 0x02 locally administered bit */
|
|
if((manuf_key & 0x00010000) != 0){
|
|
manuf_key &= 0x00FEFFFF;
|
|
name = (gchar *)g_hash_table_lookup(manuf_hashtable, &manuf_key);
|
|
if(name != NULL){
|
|
return name;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
|
|
} /* manuf_name_lookup */
|
|
|
|
static gchar *
|
|
wka_name_lookup(const guint8 *addr, const unsigned int mask)
|
|
{
|
|
guint8 masked_addr[6];
|
|
guint num;
|
|
gint i;
|
|
gchar *name;
|
|
|
|
if(wka_hashtable == NULL){
|
|
return NULL;
|
|
}
|
|
/* Get the part of the address covered by the mask. */
|
|
for (i = 0, num = mask; num >= 8; i++, num -= 8)
|
|
masked_addr[i] = addr[i]; /* copy octets entirely covered by the mask */
|
|
/* Mask out the first masked octet */
|
|
masked_addr[i] = addr[i] & (0xFF << (8 - num));
|
|
i++;
|
|
/* Zero out completely-masked-out octets */
|
|
for (; i < 6; i++)
|
|
masked_addr[i] = 0;
|
|
|
|
name = (gchar *)g_hash_table_lookup(wka_hashtable, masked_addr);
|
|
|
|
return name;
|
|
|
|
} /* wka_name_lookup */
|
|
|
|
static guint
|
|
eth_addr_hash(gconstpointer key)
|
|
{
|
|
return wmem_strong_hash((const guint8 *)key, 6);
|
|
}
|
|
|
|
static gboolean
|
|
eth_addr_cmp(gconstpointer a, gconstpointer b)
|
|
{
|
|
return (memcmp(a, b, 6) == 0);
|
|
}
|
|
|
|
static void
|
|
initialize_ethers(void)
|
|
{
|
|
ether_t *eth;
|
|
char *manuf_path;
|
|
guint mask;
|
|
|
|
/* hash table initialization */
|
|
wka_hashtable = g_hash_table_new_full(eth_addr_hash, eth_addr_cmp, g_free, g_free);
|
|
manuf_hashtable = g_hash_table_new_full(g_int_hash, g_int_equal, g_free, g_free);
|
|
eth_hashtable = g_hash_table_new_full(eth_addr_hash, eth_addr_cmp, NULL, g_free);
|
|
|
|
/* Compute the pathname of the ethers file. */
|
|
if (g_ethers_path == NULL) {
|
|
g_ethers_path = g_strdup_printf("%s" G_DIR_SEPARATOR_S "%s",
|
|
get_systemfile_dir(), ENAME_ETHERS);
|
|
}
|
|
|
|
/* Set g_pethers_path here, but don't actually do anything
|
|
* with it. It's used in get_ethbyname() and get_ethbyaddr()
|
|
*/
|
|
if (g_pethers_path == NULL)
|
|
g_pethers_path = get_persconffile_path(ENAME_ETHERS, FALSE);
|
|
|
|
/* Compute the pathname of the manuf file */
|
|
manuf_path = get_datafile_path(ENAME_MANUF);
|
|
|
|
/* Read it and initialize the hash table */
|
|
set_ethent(manuf_path);
|
|
|
|
while ((eth = get_ethent(&mask, TRUE))) {
|
|
add_manuf_name(eth->addr, mask, eth->name);
|
|
}
|
|
|
|
end_ethent();
|
|
|
|
g_free(manuf_path);
|
|
|
|
} /* initialize_ethers */
|
|
|
|
/* this is only needed when shuting down application (if at all) */
|
|
static void
|
|
eth_name_lookup_cleanup(void)
|
|
{
|
|
|
|
if(manuf_hashtable) {
|
|
g_hash_table_destroy(manuf_hashtable);
|
|
manuf_hashtable = NULL;
|
|
}
|
|
if(wka_hashtable) {
|
|
g_hash_table_destroy(wka_hashtable);
|
|
wka_hashtable = NULL;
|
|
}
|
|
|
|
if(eth_hashtable) {
|
|
g_hash_table_destroy(eth_hashtable);
|
|
eth_hashtable = NULL;
|
|
}
|
|
|
|
}
|
|
|
|
/* Resolve ethernet address */
|
|
static hashether_t *
|
|
eth_addr_resolve(hashether_t *tp) {
|
|
ether_t *eth;
|
|
const guint8 *addr = tp->addr;
|
|
|
|
if ( (eth = get_ethbyaddr(addr)) != NULL) {
|
|
g_strlcpy(tp->resolved_name, eth->name, MAXNAMELEN);
|
|
tp->status = HASHETHER_STATUS_RESOLVED_NAME;
|
|
return tp;
|
|
} else {
|
|
guint mask;
|
|
gchar *name;
|
|
|
|
/* Unknown name. Try looking for it in the well-known-address
|
|
tables for well-known address ranges smaller than 2^24. */
|
|
mask = 7;
|
|
for (;;) {
|
|
/* Only the topmost 5 bytes participate fully */
|
|
if ((name = wka_name_lookup(addr, mask+40)) != NULL) {
|
|
g_snprintf(tp->resolved_name, MAXNAMELEN, "%s_%02x",
|
|
name, addr[5] & (0xFF >> mask));
|
|
tp->status = HASHETHER_STATUS_RESOLVED_DUMMY;
|
|
return tp;
|
|
}
|
|
if (mask == 0)
|
|
break;
|
|
mask--;
|
|
}
|
|
|
|
mask = 7;
|
|
for (;;) {
|
|
/* Only the topmost 4 bytes participate fully */
|
|
if ((name = wka_name_lookup(addr, mask+32)) != NULL) {
|
|
g_snprintf(tp->resolved_name, MAXNAMELEN, "%s_%02x:%02x",
|
|
name, addr[4] & (0xFF >> mask), addr[5]);
|
|
tp->status = HASHETHER_STATUS_RESOLVED_DUMMY;
|
|
return tp;
|
|
}
|
|
if (mask == 0)
|
|
break;
|
|
mask--;
|
|
}
|
|
|
|
mask = 7;
|
|
for (;;) {
|
|
/* Only the topmost 3 bytes participate fully */
|
|
if ((name = wka_name_lookup(addr, mask+24)) != NULL) {
|
|
g_snprintf(tp->resolved_name, MAXNAMELEN, "%s_%02x:%02x:%02x",
|
|
name, addr[3] & (0xFF >> mask), addr[4], addr[5]);
|
|
tp->status = HASHETHER_STATUS_RESOLVED_DUMMY;
|
|
return tp;
|
|
}
|
|
if (mask == 0)
|
|
break;
|
|
mask--;
|
|
}
|
|
|
|
/* Now try looking in the manufacturer table. */
|
|
if ((name = manuf_name_lookup(addr)) != NULL) {
|
|
g_snprintf(tp->resolved_name, MAXNAMELEN, "%s_%02x:%02x:%02x",
|
|
name, addr[3], addr[4], addr[5]);
|
|
tp->status = HASHETHER_STATUS_RESOLVED_DUMMY;
|
|
return tp;
|
|
}
|
|
|
|
/* Now try looking for it in the well-known-address
|
|
tables for well-known address ranges larger than 2^24. */
|
|
mask = 7;
|
|
for (;;) {
|
|
/* Only the topmost 2 bytes participate fully */
|
|
if ((name = wka_name_lookup(addr, mask+16)) != NULL) {
|
|
g_snprintf(tp->resolved_name, MAXNAMELEN, "%s_%02x:%02x:%02x:%02x",
|
|
name, addr[2] & (0xFF >> mask), addr[3], addr[4],
|
|
addr[5]);
|
|
tp->status = HASHETHER_STATUS_RESOLVED_DUMMY;
|
|
return tp;
|
|
}
|
|
if (mask == 0)
|
|
break;
|
|
mask--;
|
|
}
|
|
|
|
mask = 7;
|
|
for (;;) {
|
|
/* Only the topmost byte participates fully */
|
|
if ((name = wka_name_lookup(addr, mask+8)) != NULL) {
|
|
g_snprintf(tp->resolved_name, MAXNAMELEN, "%s_%02x:%02x:%02x:%02x:%02x",
|
|
name, addr[1] & (0xFF >> mask), addr[2], addr[3],
|
|
addr[4], addr[5]);
|
|
tp->status = HASHETHER_STATUS_RESOLVED_DUMMY;
|
|
return tp;
|
|
}
|
|
if (mask == 0)
|
|
break;
|
|
mask--;
|
|
}
|
|
|
|
for (mask = 7; mask > 0; mask--) {
|
|
/* Not even the topmost byte participates fully */
|
|
if ((name = wka_name_lookup(addr, mask)) != NULL) {
|
|
g_snprintf(tp->resolved_name, MAXNAMELEN, "%s_%02x:%02x:%02x:%02x:%02x:%02x",
|
|
name, addr[0] & (0xFF >> mask), addr[1], addr[2],
|
|
addr[3], addr[4], addr[5]);
|
|
tp->status = HASHETHER_STATUS_RESOLVED_DUMMY;
|
|
return tp;
|
|
}
|
|
}
|
|
|
|
/* No match whatsoever. */
|
|
g_snprintf(tp->resolved_name, MAXNAMELEN, "%s", ether_to_str(addr));
|
|
tp->status = HASHETHER_STATUS_RESOLVED_DUMMY;
|
|
return tp;
|
|
}
|
|
g_assert_not_reached();
|
|
} /* eth_addr_resolve */
|
|
|
|
static hashether_t *
|
|
eth_hash_new_entry(const guint8 *addr, const gboolean resolve)
|
|
{
|
|
hashether_t *tp;
|
|
char *endp;
|
|
|
|
tp = g_new(hashether_t, 1);
|
|
memcpy(tp->addr, addr, sizeof(tp->addr));
|
|
tp->status = HASHETHER_STATUS_UNRESOLVED;
|
|
/* Values returned by bytes_to_hexstr_punct() are *not* null-terminated */
|
|
endp = bytes_to_hexstr_punct(tp->hexaddr, addr, sizeof(tp->addr), ':');
|
|
*endp = '\0';
|
|
tp->resolved_name[0] = '\0';
|
|
|
|
if (resolve)
|
|
eth_addr_resolve(tp);
|
|
|
|
g_hash_table_insert(eth_hashtable, tp->addr, tp);
|
|
|
|
return tp;
|
|
} /* eth_hash_new_entry */
|
|
|
|
static hashether_t *
|
|
add_eth_name(const guint8 *addr, const gchar *name)
|
|
{
|
|
hashether_t *tp;
|
|
|
|
tp = (hashether_t *)g_hash_table_lookup(eth_hashtable, addr);
|
|
|
|
if( tp == NULL ){
|
|
tp = eth_hash_new_entry(addr, FALSE);
|
|
}
|
|
|
|
g_strlcpy(tp->resolved_name, name, MAXNAMELEN);
|
|
tp->status = HASHETHER_STATUS_RESOLVED_NAME;
|
|
new_resolved_objects = TRUE;
|
|
|
|
return tp;
|
|
} /* add_eth_name */
|
|
|
|
static hashether_t *
|
|
eth_name_lookup(const guint8 *addr, const gboolean resolve)
|
|
{
|
|
hashether_t *tp;
|
|
|
|
tp = (hashether_t *)g_hash_table_lookup(eth_hashtable, addr);
|
|
if( tp == NULL ) {
|
|
tp = eth_hash_new_entry(addr, resolve);
|
|
} else {
|
|
if (resolve && (tp->status == HASHETHER_STATUS_UNRESOLVED)){
|
|
eth_addr_resolve(tp); /* Found but needs to be resolved */
|
|
}
|
|
}
|
|
|
|
return tp;
|
|
|
|
} /* eth_name_lookup */
|
|
|
|
static guint8 *
|
|
eth_addr_lookup(const gchar *name _U_)
|
|
{
|
|
#if 0
|
|
/* XXX Do we need reverse lookup??? */
|
|
ether_t *eth;
|
|
hashether_t *tp;
|
|
hashether_t **table = eth_table;
|
|
gint i;
|
|
|
|
/* to be optimized (hash table from name to addr) */
|
|
for (i = 0; i < HASHETHSIZE; i++) {
|
|
tp = table[i];
|
|
while (tp) {
|
|
if (strcmp(tp->resolved_name, name) == 0)
|
|
return tp->addr;
|
|
tp = tp->next;
|
|
}
|
|
}
|
|
|
|
/* not in hash table : performs a file lookup */
|
|
|
|
if ((eth = get_ethbyname(name)) == NULL)
|
|
return NULL;
|
|
|
|
/* add new entry in hash table */
|
|
|
|
tp = add_eth_name(eth->addr, name);
|
|
|
|
return tp->addr;
|
|
#endif
|
|
return NULL;
|
|
|
|
} /* eth_addr_lookup */
|
|
|
|
|
|
/* IPXNETS */
|
|
static int
|
|
parse_ipxnets_line(char *line, ipxnet_t *ipxnet)
|
|
{
|
|
/*
|
|
* We allow three address separators (':', '-', and '.'),
|
|
* as well as no separators
|
|
*/
|
|
|
|
gchar *cp;
|
|
guint32 a, a0, a1, a2, a3;
|
|
gboolean found_single_number = FALSE;
|
|
|
|
if ((cp = strchr(line, '#')))
|
|
*cp = '\0';
|
|
|
|
if ((cp = strtok(line, " \t\n")) == NULL)
|
|
return -1;
|
|
|
|
/* Either fill a0,a1,a2,a3 and found_single_number is FALSE,
|
|
* fill a and found_single_number is TRUE,
|
|
* or return -1
|
|
*/
|
|
if (sscanf(cp, "%x:%x:%x:%x", &a0, &a1, &a2, &a3) != 4) {
|
|
if (sscanf(cp, "%x-%x-%x-%x", &a0, &a1, &a2, &a3) != 4) {
|
|
if (sscanf(cp, "%x.%x.%x.%x", &a0, &a1, &a2, &a3) != 4) {
|
|
if (sscanf(cp, "%x", &a) == 1) {
|
|
found_single_number = TRUE;
|
|
}
|
|
else {
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if ((cp = strtok(NULL, " \t\n")) == NULL)
|
|
return -1;
|
|
|
|
if (found_single_number) {
|
|
ipxnet->addr = a;
|
|
}
|
|
else {
|
|
ipxnet->addr = (a0 << 24) | (a1 << 16) | (a2 << 8) | a3;
|
|
}
|
|
|
|
g_strlcpy(ipxnet->name, cp, MAXNAMELEN);
|
|
|
|
return 0;
|
|
|
|
} /* parse_ipxnets_line */
|
|
|
|
static FILE *ipxnet_p = NULL;
|
|
|
|
static void
|
|
set_ipxnetent(char *path)
|
|
{
|
|
if (ipxnet_p)
|
|
rewind(ipxnet_p);
|
|
else
|
|
ipxnet_p = ws_fopen(path, "r");
|
|
}
|
|
|
|
static void
|
|
end_ipxnetent(void)
|
|
{
|
|
if (ipxnet_p) {
|
|
fclose(ipxnet_p);
|
|
ipxnet_p = NULL;
|
|
}
|
|
}
|
|
|
|
static ipxnet_t *
|
|
get_ipxnetent(void)
|
|
{
|
|
|
|
static ipxnet_t ipxnet;
|
|
static int size = 0;
|
|
static char *buf = NULL;
|
|
|
|
if (ipxnet_p == NULL)
|
|
return NULL;
|
|
|
|
while (fgetline(&buf, &size, ipxnet_p) >= 0) {
|
|
if (parse_ipxnets_line(buf, &ipxnet) == 0) {
|
|
return &ipxnet;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
|
|
} /* get_ipxnetent */
|
|
|
|
/* Unused ??? */
|
|
#if 0
|
|
static ipxnet_t *
|
|
get_ipxnetbyname(const gchar *name)
|
|
{
|
|
ipxnet_t *ipxnet;
|
|
|
|
set_ipxnetent(g_ipxnets_path);
|
|
|
|
while (((ipxnet = get_ipxnetent()) != NULL) && strncmp(name, ipxnet->name, MAXNAMELEN) != 0)
|
|
;
|
|
|
|
if (ipxnet == NULL) {
|
|
end_ipxnetent();
|
|
|
|
set_ipxnetent(g_pipxnets_path);
|
|
|
|
while (((ipxnet = get_ipxnetent()) != NULL) && strncmp(name, ipxnet->name, MAXNAMELEN) != 0)
|
|
;
|
|
|
|
end_ipxnetent();
|
|
}
|
|
|
|
return ipxnet;
|
|
|
|
} /* get_ipxnetbyname */
|
|
#endif
|
|
|
|
static ipxnet_t *
|
|
get_ipxnetbyaddr(guint32 addr)
|
|
{
|
|
ipxnet_t *ipxnet;
|
|
|
|
set_ipxnetent(g_ipxnets_path);
|
|
|
|
while (((ipxnet = get_ipxnetent()) != NULL) && (addr != ipxnet->addr) ) ;
|
|
|
|
if (ipxnet == NULL) {
|
|
end_ipxnetent();
|
|
|
|
set_ipxnetent(g_pipxnets_path);
|
|
|
|
while (((ipxnet = get_ipxnetent()) != NULL) && (addr != ipxnet->addr) )
|
|
;
|
|
|
|
end_ipxnetent();
|
|
}
|
|
|
|
return ipxnet;
|
|
|
|
} /* get_ipxnetbyaddr */
|
|
|
|
static void
|
|
initialize_ipxnets(void)
|
|
{
|
|
/* Compute the pathname of the ipxnets file.
|
|
*
|
|
* XXX - is there a notion of an "ipxnets file" in any flavor of
|
|
* UNIX, or with any add-on Netware package for UNIX? If not,
|
|
* should the UNIX version of the ipxnets file be in the datafile
|
|
* directory as well?
|
|
*/
|
|
if (g_ipxnets_path == NULL) {
|
|
g_ipxnets_path = g_strdup_printf("%s" G_DIR_SEPARATOR_S "%s",
|
|
get_systemfile_dir(), ENAME_IPXNETS);
|
|
}
|
|
|
|
/* Set g_pipxnets_path here, but don't actually do anything
|
|
* with it. It's used in get_ipxnetbyname() and get_ipxnetbyaddr()
|
|
*/
|
|
if (g_pipxnets_path == NULL)
|
|
g_pipxnets_path = get_persconffile_path(ENAME_IPXNETS, FALSE);
|
|
|
|
} /* initialize_ipxnets */
|
|
|
|
static void
|
|
ipx_name_lookup_cleanup(void)
|
|
{
|
|
if(ipxnet_hash_table){
|
|
g_hash_table_destroy(ipxnet_hash_table);
|
|
ipxnet_hash_table = NULL;
|
|
}
|
|
|
|
}
|
|
|
|
#if 0
|
|
static hashipxnet_t *
|
|
add_ipxnet_name(guint addr, const gchar *name)
|
|
{
|
|
hashipxnet_t *tp;
|
|
|
|
tp = (hashipxnet_t *)g_hash_table_lookup(ipxnet_hash_table, &addr);
|
|
if(tp){
|
|
g_strlcpy(tp->name, name, MAXNAMELEN);
|
|
}else{
|
|
int *key;
|
|
|
|
key = (int *)g_new(int, 1);
|
|
*key = addr;
|
|
tp = g_new(hashipxnet_t,1);
|
|
g_strlcpy(tp->name, name, MAXNAMELEN);
|
|
g_hash_table_insert(ipxnet_hash_table, key, tp);
|
|
}
|
|
|
|
tp->addr = addr;
|
|
g_strlcpy(tp->name, name, MAXNAMELEN);
|
|
tp->next = NULL;
|
|
new_resolved_objects = TRUE;
|
|
|
|
return tp;
|
|
|
|
} /* add_ipxnet_name */
|
|
#endif
|
|
|
|
static gchar *
|
|
ipxnet_name_lookup(const guint addr)
|
|
{
|
|
hashipxnet_t *tp;
|
|
ipxnet_t *ipxnet;
|
|
|
|
tp = (hashipxnet_t *)g_hash_table_lookup(ipxnet_hash_table, &addr);
|
|
if(tp == NULL){
|
|
int *key;
|
|
|
|
key = (int *)g_new(int, 1);
|
|
*key = addr;
|
|
tp = g_new(hashipxnet_t, 1);
|
|
g_hash_table_insert(ipxnet_hash_table, key, tp);
|
|
}else{
|
|
return tp->name;
|
|
}
|
|
|
|
/* fill in a new entry */
|
|
|
|
tp->addr = addr;
|
|
|
|
if ( (ipxnet = get_ipxnetbyaddr(addr)) == NULL) {
|
|
/* unknown name */
|
|
g_snprintf(tp->name, MAXNAMELEN, "%X", addr);
|
|
|
|
} else {
|
|
g_strlcpy(tp->name, ipxnet->name, MAXNAMELEN);
|
|
}
|
|
|
|
return (tp->name);
|
|
|
|
} /* ipxnet_name_lookup */
|
|
|
|
static guint
|
|
ipxnet_addr_lookup(const gchar *name _U_, gboolean *success)
|
|
{
|
|
*success = FALSE;
|
|
return 0;
|
|
#if 0
|
|
/* XXX Do we need reverse lookup??? */
|
|
ipxnet_t *ipxnet;
|
|
hashipxnet_t *tp;
|
|
hashipxnet_t **table = ipxnet_table;
|
|
int i;
|
|
|
|
/* to be optimized (hash table from name to addr) */
|
|
for (i = 0; i < HASHIPXNETSIZE; i++) {
|
|
tp = table[i];
|
|
while (tp) {
|
|
if (strcmp(tp->name, name) == 0) {
|
|
*success = TRUE;
|
|
return tp->addr;
|
|
}
|
|
tp = tp->next;
|
|
}
|
|
}
|
|
|
|
/* not in hash table : performs a file lookup */
|
|
|
|
if ((ipxnet = get_ipxnetbyname(name)) == NULL) {
|
|
*success = FALSE;
|
|
return 0;
|
|
}
|
|
|
|
/* add new entry in hash table */
|
|
|
|
tp = add_ipxnet_name(ipxnet->addr, name);
|
|
|
|
*success = TRUE;
|
|
return tp->addr;
|
|
#endif
|
|
} /* ipxnet_addr_lookup */
|
|
|
|
static gboolean
|
|
read_hosts_file (const char *hostspath)
|
|
{
|
|
FILE *hf;
|
|
char *line = NULL;
|
|
int size = 0;
|
|
gchar *cp;
|
|
guint32 host_addr[4]; /* IPv4 or IPv6 */
|
|
struct e_in6_addr ip6_addr;
|
|
gboolean is_ipv6;
|
|
int ret;
|
|
|
|
/*
|
|
* See the hosts(4) or hosts(5) man page for hosts file format
|
|
* (not available on all systems).
|
|
*/
|
|
if ((hf = ws_fopen(hostspath, "r")) == NULL)
|
|
return FALSE;
|
|
|
|
while (fgetline(&line, &size, hf) >= 0) {
|
|
if ((cp = strchr(line, '#')))
|
|
*cp = '\0';
|
|
|
|
if ((cp = strtok(line, " \t")) == NULL)
|
|
continue; /* no tokens in the line */
|
|
|
|
ret = inet_pton(AF_INET6, cp, &host_addr);
|
|
if (ret < 0)
|
|
continue; /* error parsing */
|
|
if (ret > 0) {
|
|
/* Valid IPv6 */
|
|
is_ipv6 = TRUE;
|
|
} else {
|
|
/* Not valid IPv6 - valid IPv4? */
|
|
if (!str_to_ip(cp, &host_addr))
|
|
continue; /* no */
|
|
is_ipv6 = FALSE;
|
|
}
|
|
|
|
if ((cp = strtok(NULL, " \t")) == NULL)
|
|
continue; /* no host name */
|
|
|
|
if (is_ipv6) {
|
|
memcpy(&ip6_addr, host_addr, sizeof ip6_addr);
|
|
add_ipv6_name(&ip6_addr, cp);
|
|
} else
|
|
add_ipv4_name(host_addr[0], cp);
|
|
|
|
/*
|
|
* Add the aliases, too, if there are any.
|
|
* XXX - host_lookup() only returns the first entry.
|
|
*/
|
|
while ((cp = strtok(NULL, " \t")) != NULL) {
|
|
if (is_ipv6) {
|
|
memcpy(&ip6_addr, host_addr, sizeof ip6_addr);
|
|
add_ipv6_name(&ip6_addr, cp);
|
|
} else
|
|
add_ipv4_name(host_addr[0], cp);
|
|
}
|
|
}
|
|
g_free(line);
|
|
|
|
fclose(hf);
|
|
return TRUE;
|
|
} /* read_hosts_file */
|
|
|
|
gboolean
|
|
add_hosts_file (const char *hosts_file)
|
|
{
|
|
gboolean found = FALSE;
|
|
guint i;
|
|
|
|
if (!hosts_file)
|
|
return FALSE;
|
|
|
|
if (!extra_hosts_files)
|
|
extra_hosts_files = g_ptr_array_new();
|
|
|
|
for (i = 0; i < extra_hosts_files->len; i++) {
|
|
if (strcmp(hosts_file, (const char *) g_ptr_array_index(extra_hosts_files, i)) == 0)
|
|
found = TRUE;
|
|
}
|
|
|
|
if (!found) {
|
|
g_ptr_array_add(extra_hosts_files, g_strdup(hosts_file));
|
|
return read_hosts_file (hosts_file);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
add_ip_name_from_string (const char *addr, const char *name)
|
|
{
|
|
guint32 host_addr[4]; /* IPv4 */
|
|
struct e_in6_addr ip6_addr; /* IPv6 */
|
|
gboolean is_ipv6;
|
|
int ret;
|
|
resolved_ipv4_t *resolved_ipv4_entry;
|
|
resolved_ipv6_t *resolved_ipv6_entry;
|
|
|
|
ret = inet_pton(AF_INET6, addr, &ip6_addr);
|
|
if (ret < 0)
|
|
/* Error parsing address */
|
|
return FALSE;
|
|
|
|
if (ret > 0) {
|
|
/* Valid IPv6 */
|
|
is_ipv6 = TRUE;
|
|
} else {
|
|
/* Not valid IPv6 - valid IPv4? */
|
|
if (!str_to_ip(addr, &host_addr))
|
|
return FALSE; /* no */
|
|
is_ipv6 = FALSE;
|
|
}
|
|
|
|
if (is_ipv6) {
|
|
resolved_ipv6_entry = g_new(resolved_ipv6_t, 1);
|
|
memcpy(&(resolved_ipv6_entry->ip6_addr), &ip6_addr, 16);
|
|
g_strlcpy(resolved_ipv6_entry->name, name, MAXNAMELEN);
|
|
manually_resolved_ipv6_list = g_slist_prepend(manually_resolved_ipv6_list, resolved_ipv6_entry);
|
|
} else {
|
|
resolved_ipv4_entry = g_new(resolved_ipv4_t, 1);
|
|
resolved_ipv4_entry->host_addr = host_addr[0];
|
|
g_strlcpy(resolved_ipv4_entry->name, name, MAXNAMELEN);
|
|
manually_resolved_ipv4_list = g_slist_prepend(manually_resolved_ipv4_list, resolved_ipv4_entry);
|
|
}
|
|
|
|
return TRUE;
|
|
} /* add_ip_name_from_string */
|
|
|
|
/*
|
|
* Add the resolved addresses that are in use to the list used to create the NRB
|
|
*/
|
|
static void
|
|
ipv4_hash_table_resolved_to_list(gpointer key _U_, gpointer value, gpointer user_data)
|
|
{
|
|
addrinfo_lists_t *lists = (addrinfo_lists_t*)user_data;
|
|
hashipv4_t *ipv4_hash_table_entry = (hashipv4_t *)value;
|
|
|
|
if((ipv4_hash_table_entry->flags & USED_AND_RESOLVED_MASK) == RESOLVED_ADDRESS_USED){
|
|
lists->ipv4_addr_list = g_list_prepend (lists->ipv4_addr_list, ipv4_hash_table_entry);
|
|
}
|
|
|
|
}
|
|
|
|
/*
|
|
* Add the resolved addresses that are in use to the list used to create the NRB
|
|
*/
|
|
|
|
static void
|
|
ipv6_hash_table_resolved_to_list(gpointer key _U_, gpointer value, gpointer user_data)
|
|
{
|
|
addrinfo_lists_t *lists = (addrinfo_lists_t*)user_data;
|
|
hashipv6_t *ipv6_hash_table_entry = (hashipv6_t *)value;
|
|
|
|
if((ipv6_hash_table_entry->flags & USED_AND_RESOLVED_MASK) == RESOLVED_ADDRESS_USED){
|
|
lists->ipv6_addr_list = g_list_prepend (lists->ipv6_addr_list, ipv6_hash_table_entry);
|
|
}
|
|
|
|
}
|
|
|
|
addrinfo_lists_t *
|
|
get_addrinfo_list(void) {
|
|
|
|
if(ipv4_hash_table){
|
|
g_hash_table_foreach(ipv4_hash_table, ipv4_hash_table_resolved_to_list, &addrinfo_lists);
|
|
}
|
|
|
|
if(ipv6_hash_table){
|
|
g_hash_table_foreach(ipv6_hash_table, ipv6_hash_table_resolved_to_list, &addrinfo_lists);
|
|
}
|
|
|
|
return &addrinfo_lists;
|
|
}
|
|
|
|
/* Read in a list of subnet definition - name pairs.
|
|
* <line> = <comment> | <entry> | <whitespace>
|
|
* <comment> = <whitespace>#<any>
|
|
* <entry> = <subnet_definition> <whitespace> <subnet_name> [<comment>|<whitespace><any>]
|
|
* <subnet_definition> = <ipv4_address> / <subnet_mask_length>
|
|
* <ipv4_address> is a full address; it will be masked to get the subnet-ID.
|
|
* <subnet_mask_length> is a decimal 1-31
|
|
* <subnet_name> is a string containing no whitespace.
|
|
* <whitespace> = (space | tab)+
|
|
* Any malformed entries are ignored.
|
|
* Any trailing data after the subnet_name is ignored.
|
|
*
|
|
* XXX Support IPv6
|
|
*/
|
|
static gboolean
|
|
read_subnets_file (const char *subnetspath)
|
|
{
|
|
FILE *hf;
|
|
char *line = NULL;
|
|
int size = 0;
|
|
gchar *cp, *cp2;
|
|
guint32 host_addr; /* IPv4 ONLY */
|
|
int mask_length;
|
|
|
|
if ((hf = ws_fopen(subnetspath, "r")) == NULL)
|
|
return FALSE;
|
|
|
|
while (fgetline(&line, &size, hf) >= 0) {
|
|
if ((cp = strchr(line, '#')))
|
|
*cp = '\0';
|
|
|
|
if ((cp = strtok(line, " \t")) == NULL)
|
|
continue; /* no tokens in the line */
|
|
|
|
|
|
/* Expected format is <IP4 address>/<subnet length> */
|
|
cp2 = strchr(cp, '/');
|
|
if(NULL == cp2) {
|
|
/* No length */
|
|
continue;
|
|
}
|
|
*cp2 = '\0'; /* Cut token */
|
|
++cp2 ;
|
|
|
|
/* Check if this is a valid IPv4 address */
|
|
if (!str_to_ip(cp, &host_addr)) {
|
|
continue; /* no */
|
|
}
|
|
|
|
mask_length = atoi(cp2);
|
|
if(0 >= mask_length || mask_length > 31) {
|
|
continue; /* invalid mask length */
|
|
}
|
|
|
|
if ((cp = strtok(NULL, " \t")) == NULL)
|
|
continue; /* no subnet name */
|
|
|
|
subnet_entry_set(host_addr, (guint32)mask_length, cp);
|
|
}
|
|
g_free(line);
|
|
|
|
fclose(hf);
|
|
return TRUE;
|
|
} /* read_subnets_file */
|
|
|
|
static subnet_entry_t
|
|
subnet_lookup(const guint32 addr)
|
|
{
|
|
subnet_entry_t subnet_entry;
|
|
guint32 i;
|
|
|
|
/* Search mask lengths linearly, longest first */
|
|
|
|
i = SUBNETLENGTHSIZE;
|
|
while(have_subnet_entry && i > 0) {
|
|
guint32 masked_addr;
|
|
subnet_length_entry_t* length_entry;
|
|
|
|
/* Note that we run from 31 (length 32) to 0 (length 1) */
|
|
--i;
|
|
g_assert(i < SUBNETLENGTHSIZE);
|
|
|
|
|
|
length_entry = &subnet_length_entries[i];
|
|
|
|
if(NULL != length_entry->subnet_addresses) {
|
|
sub_net_hashipv4_t * tp;
|
|
guint32 hash_idx;
|
|
|
|
masked_addr = addr & length_entry->mask;
|
|
hash_idx = HASH_IPV4_ADDRESS(masked_addr);
|
|
|
|
tp = length_entry->subnet_addresses[hash_idx];
|
|
while(tp != NULL && tp->addr != masked_addr) {
|
|
tp = tp->next;
|
|
}
|
|
|
|
if(NULL != tp) {
|
|
subnet_entry.mask = length_entry->mask;
|
|
subnet_entry.mask_length = i + 1; /* Length is offset + 1 */
|
|
subnet_entry.name = tp->name;
|
|
return subnet_entry;
|
|
}
|
|
}
|
|
}
|
|
|
|
subnet_entry.mask = 0;
|
|
subnet_entry.mask_length = 0;
|
|
subnet_entry.name = NULL;
|
|
|
|
return subnet_entry;
|
|
}
|
|
|
|
/* Add a subnet-definition - name pair to the set.
|
|
* The definition is taken by masking the address passed in with the mask of the
|
|
* given length.
|
|
*/
|
|
static void
|
|
subnet_entry_set(guint32 subnet_addr, const guint32 mask_length, const gchar* name)
|
|
{
|
|
subnet_length_entry_t* entry;
|
|
sub_net_hashipv4_t * tp;
|
|
gsize hash_idx;
|
|
|
|
g_assert(mask_length > 0 && mask_length <= 32);
|
|
|
|
entry = &subnet_length_entries[mask_length - 1];
|
|
|
|
subnet_addr &= entry->mask;
|
|
|
|
hash_idx = HASH_IPV4_ADDRESS(subnet_addr);
|
|
|
|
if(NULL == entry->subnet_addresses) {
|
|
entry->subnet_addresses = (sub_net_hashipv4_t**) se_alloc0(sizeof(sub_net_hashipv4_t*) * HASHHOSTSIZE);
|
|
}
|
|
|
|
if(NULL != (tp = entry->subnet_addresses[hash_idx])) {
|
|
if(tp->addr == subnet_addr) {
|
|
return; /* XXX provide warning that an address was repeated? */
|
|
} else {
|
|
sub_net_hashipv4_t * new_tp = se_new(sub_net_hashipv4_t);
|
|
tp->next = new_tp;
|
|
tp = new_tp;
|
|
}
|
|
} else {
|
|
tp = entry->subnet_addresses[hash_idx] = se_new(sub_net_hashipv4_t);
|
|
}
|
|
|
|
tp->next = NULL;
|
|
tp->addr = subnet_addr;
|
|
/* Clear DUMMY_ADDRESS_ENTRY */
|
|
tp->flags = tp->flags & 0xfe; /*Never used again...*/
|
|
g_strlcpy(tp->name, name, MAXNAMELEN); /* This is longer than subnet names can actually be */
|
|
have_subnet_entry = TRUE;
|
|
}
|
|
|
|
static void
|
|
subnet_name_lookup_init(void)
|
|
{
|
|
gchar* subnetspath;
|
|
guint32 i;
|
|
|
|
for(i = 0; i < SUBNETLENGTHSIZE; ++i) {
|
|
guint32 length = i + 1;
|
|
|
|
subnet_length_entries[i].subnet_addresses = NULL;
|
|
subnet_length_entries[i].mask_length = length;
|
|
subnet_length_entries[i].mask = g_htonl(ip_get_subnet_mask(length));
|
|
}
|
|
|
|
subnetspath = get_persconffile_path(ENAME_SUBNETS, FALSE);
|
|
if (!read_subnets_file(subnetspath) && errno != ENOENT) {
|
|
report_open_failure(subnetspath, errno, FALSE);
|
|
}
|
|
g_free(subnetspath);
|
|
|
|
/*
|
|
* Load the global subnets file, if we have one.
|
|
*/
|
|
subnetspath = get_datafile_path(ENAME_SUBNETS);
|
|
if (!read_subnets_file(subnetspath) && errno != ENOENT) {
|
|
report_open_failure(subnetspath, errno, FALSE);
|
|
}
|
|
g_free(subnetspath);
|
|
}
|
|
|
|
|
|
/*
|
|
* External Functions
|
|
*/
|
|
|
|
void
|
|
addr_resolve_pref_init(module_t *nameres)
|
|
{
|
|
prefs_register_bool_preference(nameres, "mac_name",
|
|
"Resolve MAC addresses",
|
|
"Resolve Ethernet MAC address to manufacturer names",
|
|
&gbl_resolv_flags.mac_name);
|
|
|
|
prefs_register_bool_preference(nameres, "transport_name",
|
|
"Resolve transport names",
|
|
"Resolve TCP/UDP ports into service names",
|
|
&gbl_resolv_flags.transport_name);
|
|
|
|
prefs_register_bool_preference(nameres, "network_name",
|
|
"Resolve network (IP) addresses",
|
|
"Resolve IPv4, IPv6, and IPX addresses into host names."
|
|
" The next set of check boxes determines how name resolution should be performed."
|
|
" If no other options are checked name resolution is made from Wireshark's host file,"
|
|
" capture file name resolution blocks and DNS packets in the capture.",
|
|
&gbl_resolv_flags.network_name);
|
|
|
|
prefs_register_bool_preference(nameres, "use_external_name_resolver",
|
|
"Use an external network name resolver",
|
|
"Use your system's configured name resolver"
|
|
" (usually DNS) to resolve network names."
|
|
" Only applies when network name resolution"
|
|
" is enabled.",
|
|
&gbl_resolv_flags.use_external_net_name_resolver);
|
|
|
|
#if defined(HAVE_C_ARES) || defined(HAVE_GNU_ADNS)
|
|
prefs_register_bool_preference(nameres, "concurrent_dns",
|
|
"Enable concurrent DNS name resolution",
|
|
"Enable concurrent DNS name resolution. Only"
|
|
" applies when network name resolution is"
|
|
" enabled. You probably want to enable this.",
|
|
&gbl_resolv_flags.concurrent_dns);
|
|
|
|
prefs_register_uint_preference(nameres, "name_resolve_concurrency",
|
|
"Maximum concurrent requests",
|
|
"The maximum number of DNS requests that may"
|
|
" be active at any time. A large value (many"
|
|
" thousands) might overload the network or make"
|
|
" your DNS server behave badly.",
|
|
10,
|
|
&name_resolve_concurrency);
|
|
#else
|
|
prefs_register_static_text_preference(nameres, "concurrent_dns",
|
|
"Enable concurrent DNS name resolution: N/A",
|
|
"Support for concurrent DNS name resolution was not"
|
|
" compiled into this version of Wireshark");
|
|
#endif
|
|
|
|
prefs_register_bool_preference(nameres, "hosts_file_handling",
|
|
"Only use the profile \"hosts\" file",
|
|
"By default \"hosts\" files will be loaded from multiple sources."
|
|
" Checking this box only loads the \"hosts\" in the current profile.",
|
|
&gbl_resolv_flags.load_hosts_file_from_profile_only);
|
|
|
|
}
|
|
|
|
#ifdef HAVE_C_ARES
|
|
gboolean
|
|
host_name_lookup_process(void) {
|
|
async_dns_queue_msg_t *caqm;
|
|
struct timeval tv = { 0, 0 };
|
|
int nfds;
|
|
fd_set rfds, wfds;
|
|
gboolean nro = new_resolved_objects;
|
|
|
|
new_resolved_objects = FALSE;
|
|
|
|
if (!async_dns_initialized)
|
|
/* c-ares not initialized. Bail out and cancel timers. */
|
|
return nro;
|
|
|
|
async_dns_queue_head = g_list_first(async_dns_queue_head);
|
|
|
|
while (async_dns_queue_head != NULL && async_dns_in_flight <= name_resolve_concurrency) {
|
|
caqm = (async_dns_queue_msg_t *) async_dns_queue_head->data;
|
|
async_dns_queue_head = g_list_remove(async_dns_queue_head, (void *) caqm);
|
|
if (caqm->family == AF_INET) {
|
|
ares_gethostbyaddr(ghba_chan, &caqm->addr.ip4, sizeof(guint32), AF_INET,
|
|
c_ares_ghba_cb, caqm);
|
|
async_dns_in_flight++;
|
|
} else if (caqm->family == AF_INET6) {
|
|
ares_gethostbyaddr(ghba_chan, &caqm->addr.ip6, sizeof(struct e_in6_addr),
|
|
AF_INET6, c_ares_ghba_cb, caqm);
|
|
async_dns_in_flight++;
|
|
}
|
|
}
|
|
|
|
FD_ZERO(&rfds);
|
|
FD_ZERO(&wfds);
|
|
nfds = ares_fds(ghba_chan, &rfds, &wfds);
|
|
if (nfds > 0) {
|
|
if (select(nfds, &rfds, &wfds, NULL, &tv) == -1) { /* call to select() failed */
|
|
fprintf(stderr, "Warning: call to select() failed, error is %s\n", g_strerror(errno));
|
|
return nro;
|
|
}
|
|
ares_process(ghba_chan, &rfds, &wfds);
|
|
}
|
|
|
|
/* Any new entries? */
|
|
return nro;
|
|
}
|
|
|
|
static void
|
|
_host_name_lookup_cleanup(void) {
|
|
GList *cur;
|
|
|
|
cur = g_list_first(async_dns_queue_head);
|
|
while (cur) {
|
|
g_free(cur->data);
|
|
cur = g_list_next (cur);
|
|
}
|
|
|
|
g_list_free(async_dns_queue_head);
|
|
async_dns_queue_head = NULL;
|
|
|
|
if (async_dns_initialized) {
|
|
ares_destroy(ghba_chan);
|
|
ares_destroy(ghbn_chan);
|
|
}
|
|
#ifdef CARES_HAVE_ARES_LIBRARY_INIT
|
|
ares_library_cleanup();
|
|
#endif
|
|
async_dns_initialized = FALSE;
|
|
}
|
|
|
|
#elif defined(HAVE_GNU_ADNS)
|
|
|
|
/* XXX - The ADNS "documentation" isn't very clear:
|
|
* - Do we need to keep our query structures around?
|
|
*/
|
|
gboolean
|
|
host_name_lookup_process(void) {
|
|
async_dns_queue_msg_t *almsg;
|
|
GList *cur;
|
|
char addr_str[] = "111.222.333.444.in-addr.arpa.";
|
|
guint8 *addr_bytes;
|
|
adns_answer *ans;
|
|
int ret;
|
|
gboolean dequeue;
|
|
gboolean nro = new_resolved_objects;
|
|
|
|
new_resolved_objects = FALSE;
|
|
async_dns_queue_head = g_list_first(async_dns_queue_head);
|
|
|
|
cur = async_dns_queue_head;
|
|
while (cur && async_dns_in_flight <= name_resolve_concurrency) {
|
|
almsg = (async_dns_queue_msg_t *) cur->data;
|
|
if (! almsg->submitted && almsg->type == AF_INET) {
|
|
addr_bytes = (guint8 *) &almsg->ip4_addr;
|
|
g_snprintf(addr_str, sizeof addr_str, "%u.%u.%u.%u.in-addr.arpa.", addr_bytes[3],
|
|
addr_bytes[2], addr_bytes[1], addr_bytes[0]);
|
|
/* XXX - what if it fails? */
|
|
adns_submit (ads, addr_str, adns_r_ptr, adns_qf_none, NULL, &almsg->query);
|
|
almsg->submitted = TRUE;
|
|
async_dns_in_flight++;
|
|
}
|
|
cur = cur->next;
|
|
}
|
|
|
|
cur = async_dns_queue_head;
|
|
while (cur) {
|
|
dequeue = FALSE;
|
|
almsg = (async_dns_queue_msg_t *) cur->data;
|
|
if (almsg->submitted) {
|
|
ret = adns_check(ads, &almsg->query, &ans, NULL);
|
|
if (ret == 0) {
|
|
if (ans->status == adns_s_ok) {
|
|
add_ipv4_name(almsg->ip4_addr, *ans->rrs.str);
|
|
}
|
|
dequeue = TRUE;
|
|
}
|
|
}
|
|
cur = cur->next;
|
|
if (dequeue) {
|
|
async_dns_queue_head = g_list_remove(async_dns_queue_head, (void *) almsg);
|
|
g_free(almsg);
|
|
/* XXX, what to do if async_dns_in_flight == 0? */
|
|
async_dns_in_flight--;
|
|
}
|
|
}
|
|
|
|
/* Keep the timeout in place */
|
|
return nro;
|
|
}
|
|
|
|
static void
|
|
_host_name_lookup_cleanup(void) {
|
|
void *qdata;
|
|
|
|
async_dns_queue_head = g_list_first(async_dns_queue_head);
|
|
while (async_dns_queue_head) {
|
|
qdata = async_dns_queue_head->data;
|
|
async_dns_queue_head = g_list_remove(async_dns_queue_head, qdata);
|
|
g_free(qdata);
|
|
}
|
|
|
|
if (async_dns_initialized)
|
|
adns_finish(ads);
|
|
async_dns_initialized = FALSE;
|
|
}
|
|
|
|
#else /* HAVE_GNU_ADNS */
|
|
|
|
gboolean
|
|
host_name_lookup_process(void) {
|
|
gboolean nro = new_resolved_objects;
|
|
|
|
new_resolved_objects = FALSE;
|
|
|
|
return nro;
|
|
}
|
|
|
|
static void
|
|
_host_name_lookup_cleanup(void) {
|
|
}
|
|
|
|
#endif /* HAVE_C_ARES */
|
|
|
|
const gchar *
|
|
get_hostname(const guint addr)
|
|
{
|
|
gboolean found;
|
|
|
|
/* XXX why do we call this if we're not resolving? To create hash entries?
|
|
* Why?
|
|
*/
|
|
hashipv4_t *tp = host_lookup(addr, &found);
|
|
|
|
if (!gbl_resolv_flags.network_name)
|
|
return tp->ip;
|
|
|
|
tp->flags = tp->flags | RESOLVED_ADDRESS_USED;
|
|
|
|
return tp->name;
|
|
}
|
|
|
|
/* -------------------------- */
|
|
|
|
const gchar *
|
|
get_hostname6(const struct e_in6_addr *addr)
|
|
{
|
|
gboolean found;
|
|
|
|
/* XXX why do we call this if we're not resolving? To create hash entries?
|
|
* Why?
|
|
*/
|
|
hashipv6_t *tp = host_lookup6(addr, &found);
|
|
|
|
if (!gbl_resolv_flags.network_name)
|
|
return tp->ip6;
|
|
|
|
tp->flags = tp->flags | RESOLVED_ADDRESS_USED;
|
|
|
|
return tp->name;
|
|
}
|
|
|
|
/* -------------------------- */
|
|
void
|
|
add_ipv4_name(const guint addr, const gchar *name)
|
|
{
|
|
hashipv4_t *tp;
|
|
|
|
/*
|
|
* Don't add zero-length names; apparently, some resolvers will return
|
|
* them if they get them from DNS.
|
|
*/
|
|
if (name[0] == '\0')
|
|
return;
|
|
|
|
|
|
tp = (hashipv4_t *)g_hash_table_lookup(ipv4_hash_table, GUINT_TO_POINTER(addr));
|
|
if(tp){
|
|
g_strlcpy(tp->name, name, MAXNAMELEN);
|
|
}else{
|
|
tp = new_ipv4(addr);
|
|
g_strlcpy(tp->name, name, MAXNAMELEN);
|
|
g_hash_table_insert(ipv4_hash_table, GUINT_TO_POINTER(addr), tp);
|
|
}
|
|
|
|
g_strlcpy(tp->name, name, MAXNAMELEN);
|
|
tp->flags = tp->flags | TRIED_RESOLVE_ADDRESS;
|
|
new_resolved_objects = TRUE;
|
|
|
|
} /* add_ipv4_name */
|
|
|
|
/* -------------------------- */
|
|
void
|
|
add_ipv6_name(const struct e_in6_addr *addrp, const gchar *name)
|
|
{
|
|
hashipv6_t *tp;
|
|
|
|
/*
|
|
* Don't add zero-length names; apparently, some resolvers will return
|
|
* them if they get them from DNS.
|
|
*/
|
|
if (name[0] == '\0')
|
|
return;
|
|
|
|
tp = (hashipv6_t *)g_hash_table_lookup(ipv6_hash_table, addrp);
|
|
if(tp){
|
|
g_strlcpy(tp->name, name, MAXNAMELEN);
|
|
}else{
|
|
struct e_in6_addr *addr_key;
|
|
|
|
addr_key = g_new(struct e_in6_addr,1);
|
|
tp = new_ipv6(addrp);
|
|
memcpy(addr_key, addrp, 16);
|
|
g_strlcpy(tp->name, name, MAXNAMELEN);
|
|
g_hash_table_insert(ipv6_hash_table, addr_key, tp);
|
|
}
|
|
|
|
g_strlcpy(tp->name, name, MAXNAMELEN);
|
|
tp->flags = tp->flags | TRIED_RESOLVE_ADDRESS;
|
|
new_resolved_objects = TRUE;
|
|
|
|
} /* add_ipv6_name */
|
|
|
|
static void
|
|
add_manually_resolved_ipv4(gpointer data, gpointer user_data _U_)
|
|
{
|
|
resolved_ipv4_t *resolved_ipv4_entry = (resolved_ipv4_t *)data;
|
|
|
|
add_ipv4_name(resolved_ipv4_entry->host_addr, resolved_ipv4_entry->name);
|
|
}
|
|
|
|
static void
|
|
add_manually_resolved_ipv6(gpointer data, gpointer user_data _U_)
|
|
{
|
|
resolved_ipv6_t *resolved_ipv6_entry = (resolved_ipv6_t *)data;
|
|
|
|
add_ipv6_name(&(resolved_ipv6_entry->ip6_addr), resolved_ipv6_entry->name);
|
|
}
|
|
|
|
static void
|
|
add_manually_resolved(void)
|
|
{
|
|
if(manually_resolved_ipv4_list){
|
|
g_slist_foreach(manually_resolved_ipv4_list, add_manually_resolved_ipv4, NULL);
|
|
}
|
|
|
|
if(manually_resolved_ipv6_list){
|
|
g_slist_foreach(manually_resolved_ipv6_list, add_manually_resolved_ipv6, NULL);
|
|
}
|
|
}
|
|
|
|
void
|
|
host_name_lookup_init(void)
|
|
{
|
|
char *hostspath;
|
|
guint i;
|
|
|
|
#ifdef HAVE_GNU_ADNS
|
|
#ifdef _WIN32
|
|
char *sysroot;
|
|
static char rootpath_nt[] = "\\system32\\drivers\\etc\\hosts";
|
|
static char rootpath_ot[] = "\\hosts";
|
|
#endif /* _WIN32 */
|
|
#endif /*GNU_ADNS */
|
|
|
|
g_assert(ipxnet_hash_table == NULL);
|
|
ipxnet_hash_table = g_hash_table_new_full(g_int_hash, g_int_equal, g_free, g_free);
|
|
|
|
g_assert(ipv4_hash_table == NULL);
|
|
ipv4_hash_table = g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL, g_free);
|
|
|
|
g_assert(ipv6_hash_table == NULL);
|
|
ipv6_hash_table = g_hash_table_new_full(ipv6_oat_hash, ipv6_equal, g_free, g_free);
|
|
|
|
/*
|
|
* Load the global hosts file, if we have one.
|
|
*/
|
|
if(!gbl_resolv_flags.load_hosts_file_from_profile_only){
|
|
hostspath = get_datafile_path(ENAME_HOSTS);
|
|
if (!read_hosts_file(hostspath) && errno != ENOENT) {
|
|
report_open_failure(hostspath, errno, FALSE);
|
|
}
|
|
g_free(hostspath);
|
|
}
|
|
/*
|
|
* Load the user's hosts file no matter what, if they have one.
|
|
*/
|
|
hostspath = get_persconffile_path(ENAME_HOSTS, TRUE);
|
|
if (!read_hosts_file(hostspath) && errno != ENOENT) {
|
|
report_open_failure(hostspath, errno, FALSE);
|
|
}
|
|
g_free(hostspath);
|
|
#ifdef HAVE_C_ARES
|
|
if (gbl_resolv_flags.concurrent_dns) {
|
|
#ifdef CARES_HAVE_ARES_LIBRARY_INIT
|
|
if (ares_library_init(ARES_LIB_INIT_ALL) == ARES_SUCCESS) {
|
|
#endif
|
|
if (ares_init(&ghba_chan) == ARES_SUCCESS && ares_init(&ghbn_chan) == ARES_SUCCESS) {
|
|
async_dns_initialized = TRUE;
|
|
}
|
|
#ifdef CARES_HAVE_ARES_LIBRARY_INIT
|
|
}
|
|
#endif
|
|
}
|
|
#else
|
|
#ifdef HAVE_GNU_ADNS
|
|
/*
|
|
* We're using GNU ADNS, which doesn't check the system hosts file;
|
|
* we load that file ourselves.
|
|
*/
|
|
#ifdef _WIN32
|
|
|
|
sysroot = getenv_utf8("WINDIR");
|
|
if (sysroot != NULL) {
|
|
/*
|
|
* The file should be under WINDIR.
|
|
* If this is Windows NT (NT 4.0,2K,XP,Server2K3), it's in
|
|
* %WINDIR%\system32\drivers\etc\hosts.
|
|
* If this is Windows OT (95,98,Me), it's in %WINDIR%\hosts.
|
|
* Try both.
|
|
* XXX - should we base it on the dwPlatformId value from
|
|
* GetVersionEx()?
|
|
*/
|
|
if(!gbl_resolv_flags.load_hosts_file_from_profile_only){
|
|
hostspath = g_strconcat(sysroot, rootpath_nt, NULL);
|
|
if (!read_hosts_file(hostspath)) {
|
|
g_free(hostspath);
|
|
hostspath = g_strconcat(sysroot, rootpath_ot, NULL);
|
|
read_hosts_file(hostspath);
|
|
}
|
|
g_free(hostspath);
|
|
}
|
|
}
|
|
#else /* _WIN32 */
|
|
if(!gbl_resolv_flags.load_hosts_file_from_profile_only){
|
|
read_hosts_file("/etc/hosts");
|
|
}
|
|
#endif /* _WIN32 */
|
|
|
|
if (gbl_resolv_flags.concurrent_dns) {
|
|
/* XXX - Any flags we should be using? */
|
|
/* XXX - We could provide config settings for DNS servers, and
|
|
pass them to ADNS with adns_init_strcfg */
|
|
if (adns_init(&ads, adns_if_none, 0 /*0=>stderr*/) != 0) {
|
|
/*
|
|
* XXX - should we report the error? I'm assuming that some crashes
|
|
* reported on a Windows machine with TCP/IP not configured are due
|
|
* to "adns_init()" failing (due to the lack of TCP/IP) and leaving
|
|
* ADNS in a state where it crashes due to that. We'll still try
|
|
* doing name resolution anyway.
|
|
*/
|
|
return;
|
|
}
|
|
async_dns_initialized = TRUE;
|
|
async_dns_in_flight = 0;
|
|
}
|
|
#endif /* HAVE_GNU_ADNS */
|
|
#endif /* HAVE_C_ARES */
|
|
|
|
if(extra_hosts_files && !gbl_resolv_flags.load_hosts_file_from_profile_only){
|
|
for (i = 0; i < extra_hosts_files->len; i++) {
|
|
read_hosts_file((const char *) g_ptr_array_index(extra_hosts_files, i));
|
|
}
|
|
}
|
|
|
|
subnet_name_lookup_init();
|
|
|
|
add_manually_resolved();
|
|
}
|
|
|
|
void
|
|
host_name_lookup_cleanup(void)
|
|
{
|
|
_host_name_lookup_cleanup();
|
|
|
|
if(ipxnet_hash_table){
|
|
g_hash_table_destroy(ipxnet_hash_table);
|
|
ipxnet_hash_table = NULL;
|
|
}
|
|
|
|
if(ipv4_hash_table){
|
|
g_hash_table_destroy(ipv4_hash_table);
|
|
ipv4_hash_table = NULL;
|
|
}
|
|
|
|
if(ipv6_hash_table){
|
|
g_hash_table_destroy(ipv6_hash_table);
|
|
ipv6_hash_table = NULL;
|
|
}
|
|
|
|
memset(subnet_length_entries, 0, sizeof(subnet_length_entries));
|
|
|
|
have_subnet_entry = FALSE;
|
|
new_resolved_objects = FALSE;
|
|
}
|
|
|
|
static void
|
|
free_manually_resolved_ipv4(gpointer data, gpointer user_data _U_)
|
|
{
|
|
resolved_ipv4_t *resolved_ipv4_entry = (resolved_ipv4_t *)data;
|
|
|
|
g_free(resolved_ipv4_entry);
|
|
}
|
|
|
|
static void
|
|
free_manually_resolved_ipv6(gpointer data, gpointer user_data _U_)
|
|
{
|
|
resolved_ipv6_t *resolved_ipv6_entry = (resolved_ipv6_t *)data;
|
|
|
|
g_free(resolved_ipv6_entry);
|
|
}
|
|
|
|
void
|
|
manually_resolve_cleanup(void)
|
|
{
|
|
if(manually_resolved_ipv4_list){
|
|
g_slist_foreach(manually_resolved_ipv4_list, free_manually_resolved_ipv4, NULL);
|
|
g_slist_free(manually_resolved_ipv4_list);
|
|
manually_resolved_ipv4_list = NULL;
|
|
}
|
|
|
|
if(manually_resolved_ipv6_list){
|
|
g_slist_foreach(manually_resolved_ipv6_list, free_manually_resolved_ipv6, NULL);
|
|
g_slist_free(manually_resolved_ipv6_list);
|
|
manually_resolved_ipv6_list = NULL;
|
|
}
|
|
|
|
}
|
|
|
|
gchar *
|
|
ep_udp_port_to_display(guint port)
|
|
{
|
|
|
|
if (!gbl_resolv_flags.transport_name) {
|
|
return ep_utoa(port);
|
|
}
|
|
|
|
return serv_name_lookup(port, PT_UDP);
|
|
|
|
} /* ep_udp_port_to_display */
|
|
|
|
gchar *
|
|
ep_dccp_port_to_display(guint port)
|
|
{
|
|
|
|
if (!gbl_resolv_flags.transport_name) {
|
|
return ep_utoa(port);
|
|
}
|
|
|
|
return serv_name_lookup(port, PT_DCCP);
|
|
|
|
} /* ep_dccp_port_to_display */
|
|
|
|
gchar *
|
|
ep_tcp_port_to_display(guint port)
|
|
{
|
|
|
|
if (!gbl_resolv_flags.transport_name) {
|
|
return ep_utoa(port);
|
|
}
|
|
|
|
return serv_name_lookup(port, PT_TCP);
|
|
|
|
} /* ep_tcp_port_to_display */
|
|
|
|
gchar *
|
|
ep_sctp_port_to_display(guint port)
|
|
{
|
|
|
|
if (!gbl_resolv_flags.transport_name) {
|
|
return ep_utoa(port);
|
|
}
|
|
|
|
return serv_name_lookup(port, PT_SCTP);
|
|
|
|
} /* ep_sctp_port_to_display */
|
|
|
|
const gchar *
|
|
ep_address_to_display(const address *addr)
|
|
{
|
|
const gchar *result;
|
|
|
|
result = solve_address_to_name(addr);
|
|
|
|
if (result != NULL)
|
|
return result;
|
|
|
|
/* if it gets here, either it is of type AT_NONE, */
|
|
/* or it should be solvable in address_to_str -unless addr->type is wrongly defined */
|
|
|
|
if (addr->type == AT_NONE){
|
|
return "NONE";
|
|
}
|
|
|
|
/* We need an ephemeral allocated string */
|
|
return ep_address_to_str(addr);
|
|
}
|
|
|
|
const gchar *
|
|
get_addr_name(const address *addr)
|
|
{
|
|
guint32 ip4_addr;
|
|
struct e_in6_addr ip6_addr;
|
|
|
|
/*
|
|
* Try to look up a name for this address.
|
|
* If it's not found, this might return a string corresponding to
|
|
* the address, or it might return NULL.
|
|
*
|
|
* Whatever string is returned has at least session scope.
|
|
*/
|
|
switch (addr->type) {
|
|
|
|
case AT_ETHER:
|
|
return get_ether_name((const guint8 *)addr->data);
|
|
|
|
case AT_IPv4:
|
|
memcpy(&ip4_addr, addr->data, sizeof ip4_addr);
|
|
return get_hostname(ip4_addr);
|
|
|
|
case AT_IPv6:
|
|
memcpy(&ip6_addr.bytes, addr->data, sizeof ip6_addr.bytes);
|
|
return get_hostname6(&ip6_addr);
|
|
|
|
default:
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
void
|
|
get_addr_name_buf(const address *addr, gchar *buf, gsize size)
|
|
{
|
|
const gchar *result = ep_address_to_display(addr);
|
|
|
|
g_strlcpy(buf, result, size);
|
|
} /* get_addr_name_buf */
|
|
|
|
|
|
gchar *
|
|
get_ether_name(const guint8 *addr)
|
|
{
|
|
hashether_t *tp;
|
|
gboolean resolve = gbl_resolv_flags.mac_name;
|
|
|
|
tp = eth_name_lookup(addr, resolve);
|
|
|
|
return resolve ? tp->resolved_name : tp->hexaddr;
|
|
|
|
} /* get_ether_name */
|
|
|
|
/* Look for a (non-dummy) ether name in the hash, and return it if found.
|
|
* If it's not found, simply return NULL.
|
|
*/
|
|
gchar *
|
|
get_ether_name_if_known(const guint8 *addr)
|
|
{
|
|
hashether_t *tp;
|
|
|
|
/* Initialize ether structs if we're the first
|
|
* ether-related function called */
|
|
if (!gbl_resolv_flags.mac_name)
|
|
return NULL;
|
|
|
|
/* eth_name_lookup will create a (resolved) hash entry if it doesn't exist */
|
|
tp = eth_name_lookup(addr, TRUE);
|
|
g_assert(tp != NULL);
|
|
|
|
if (tp->status == HASHETHER_STATUS_RESOLVED_NAME) {
|
|
/* Name is from an ethers file (or is a "well-known" MAC address name from the manuf file) */
|
|
return tp->resolved_name;
|
|
}
|
|
else {
|
|
/* Name was created */
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
guint8 *
|
|
get_ether_addr(const gchar *name)
|
|
{
|
|
|
|
/* force resolution (do not check gbl_resolv_flags) */
|
|
return eth_addr_lookup(name);
|
|
|
|
} /* get_ether_addr */
|
|
|
|
void
|
|
add_ether_byip(const guint ip, const guint8 *eth)
|
|
{
|
|
gboolean found;
|
|
hashipv4_t *tp;
|
|
|
|
/* first check that IP address can be resolved */
|
|
if (!gbl_resolv_flags.network_name)
|
|
return;
|
|
|
|
tp = host_lookup(ip, &found);
|
|
if (found) {
|
|
/* ok, we can add this entry in the ethers hashtable */
|
|
add_eth_name(eth, tp->name);
|
|
}
|
|
|
|
} /* add_ether_byip */
|
|
|
|
const gchar *
|
|
get_ipxnet_name(const guint32 addr)
|
|
{
|
|
|
|
if (!gbl_resolv_flags.network_name) {
|
|
return ipxnet_to_str_punct(addr, '\0');
|
|
}
|
|
|
|
return ipxnet_name_lookup(addr);
|
|
|
|
} /* get_ipxnet_name */
|
|
|
|
guint32
|
|
get_ipxnet_addr(const gchar *name, gboolean *known)
|
|
{
|
|
guint32 addr;
|
|
gboolean success;
|
|
|
|
/* force resolution (do not check gbl_resolv_flags) */
|
|
addr = ipxnet_addr_lookup(name, &success);
|
|
|
|
*known = success;
|
|
return addr;
|
|
|
|
} /* get_ipxnet_addr */
|
|
|
|
const gchar *
|
|
get_manuf_name(const guint8 *addr)
|
|
{
|
|
gchar *cur;
|
|
int manuf_key;
|
|
guint8 oct;
|
|
|
|
/* manuf needs only the 3 most significant octets of the ethernet address */
|
|
manuf_key = addr[0];
|
|
manuf_key = manuf_key<<8;
|
|
oct = addr[1];
|
|
manuf_key = manuf_key | oct;
|
|
manuf_key = manuf_key<<8;
|
|
oct = addr[2];
|
|
manuf_key = manuf_key | oct;
|
|
|
|
if (!gbl_resolv_flags.mac_name || ((cur = (gchar *)g_hash_table_lookup(manuf_hashtable, &manuf_key)) == NULL)) {
|
|
cur=ep_strdup_printf("%02x:%02x:%02x", addr[0], addr[1], addr[2]);
|
|
return cur;
|
|
}
|
|
|
|
return cur;
|
|
|
|
} /* get_manuf_name */
|
|
|
|
const gchar *
|
|
uint_get_manuf_name(const guint oid)
|
|
{
|
|
guint8 addr[3];
|
|
|
|
addr[0] = (oid >> 16) & 0xFF;
|
|
addr[1] = (oid >> 8) & 0xFF;
|
|
addr[2] = (oid >> 0) & 0xFF;
|
|
return get_manuf_name(addr);
|
|
}
|
|
|
|
const gchar *
|
|
tvb_get_manuf_name(tvbuff_t *tvb, gint offset)
|
|
{
|
|
return get_manuf_name(tvb_get_ptr(tvb, offset, 3));
|
|
}
|
|
|
|
const gchar *
|
|
get_manuf_name_if_known(const guint8 *addr)
|
|
{
|
|
gchar *cur;
|
|
int manuf_key;
|
|
guint8 oct;
|
|
|
|
/* manuf needs only the 3 most significant octets of the ethernet address */
|
|
manuf_key = addr[0];
|
|
manuf_key = manuf_key<<8;
|
|
oct = addr[1];
|
|
manuf_key = manuf_key | oct;
|
|
manuf_key = manuf_key<<8;
|
|
oct = addr[2];
|
|
manuf_key = manuf_key | oct;
|
|
|
|
if ((cur = (gchar *)g_hash_table_lookup(manuf_hashtable, &manuf_key)) == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
return cur;
|
|
|
|
} /* get_manuf_name_if_known */
|
|
|
|
const gchar *
|
|
uint_get_manuf_name_if_known(const guint manuf_key)
|
|
{
|
|
gchar *cur;
|
|
|
|
if ((cur = (gchar *)g_hash_table_lookup(manuf_hashtable, &manuf_key)) == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
return cur;
|
|
}
|
|
|
|
const gchar *
|
|
tvb_get_manuf_name_if_known(tvbuff_t *tvb, gint offset)
|
|
{
|
|
return get_manuf_name_if_known(tvb_get_ptr(tvb, offset, 3));
|
|
}
|
|
|
|
const gchar *
|
|
ep_eui64_to_display(const guint64 addr_eui64)
|
|
{
|
|
gchar *cur, *name;
|
|
guint8 *addr = (guint8 *)ep_alloc(8);
|
|
|
|
/* Copy and convert the address to network byte order. */
|
|
*(guint64 *)(void *)(addr) = pntoh64(&(addr_eui64));
|
|
|
|
if (!gbl_resolv_flags.mac_name || ((name = manuf_name_lookup(addr)) == NULL)) {
|
|
cur=ep_strdup_printf("%02x:%02x:%02x%02x:%02x:%02x%02x:%02x", addr[0], addr[1], addr[2], addr[3], addr[4], addr[5], addr[6], addr[7]);
|
|
return cur;
|
|
}
|
|
cur=ep_strdup_printf("%s_%02x:%02x:%02x:%02x:%02x", name, addr[3], addr[4], addr[5], addr[6], addr[7]);
|
|
return cur;
|
|
|
|
} /* ep_eui64_to_display */
|
|
|
|
|
|
const gchar *
|
|
ep_eui64_to_display_if_known(const guint64 addr_eui64)
|
|
{
|
|
gchar *cur, *name;
|
|
guint8 *addr = (guint8 *)ep_alloc(8);
|
|
|
|
/* Copy and convert the address to network byte order. */
|
|
*(guint64 *)(void *)(addr) = pntoh64(&(addr_eui64));
|
|
|
|
if ((name = manuf_name_lookup(addr)) == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
cur=ep_strdup_printf("%s_%02x:%02x:%02x:%02x:%02x", name, addr[3], addr[4], addr[5], addr[6], addr[7]);
|
|
return cur;
|
|
|
|
} /* ep_eui64_to_display_if_known */
|
|
|
|
#ifdef HAVE_C_ARES
|
|
#define GHI_TIMEOUT (250 * 1000)
|
|
static void
|
|
c_ares_ghi_cb(
|
|
void *arg,
|
|
int status,
|
|
#if ( ( ARES_VERSION_MAJOR < 1 ) \
|
|
|| ( 1 == ARES_VERSION_MAJOR && ARES_VERSION_MINOR < 5 ) )
|
|
struct hostent *hp
|
|
#else
|
|
int timeouts _U_,
|
|
struct hostent *hp
|
|
#endif
|
|
) {
|
|
|
|
/*
|
|
* XXX - If we wanted to be really fancy we could cache results here and
|
|
* look them up in get_host_ipaddr* below.
|
|
*/
|
|
async_hostent_t *ahp = (async_hostent_t *)arg;
|
|
if (status == ARES_SUCCESS && hp && ahp && hp->h_length == ahp->addr_size) {
|
|
memcpy(ahp->addrp, hp->h_addr, hp->h_length);
|
|
ahp->copied = hp->h_length;
|
|
}
|
|
}
|
|
#endif /* HAVE_C_ARES */
|
|
|
|
/* Translate a string, assumed either to be a dotted-quad IP address or
|
|
* a host name, to a numeric IP address. Return TRUE if we succeed and
|
|
* set "*addrp" to that numeric IP address; return FALSE if we fail.
|
|
* Used more in the dfilter parser rather than in packet dissectors */
|
|
gboolean
|
|
get_host_ipaddr(const char *host, guint32 *addrp)
|
|
{
|
|
struct in_addr ipaddr;
|
|
#ifdef HAVE_C_ARES
|
|
struct timeval tv = { 0, GHI_TIMEOUT }, *tvp;
|
|
int nfds;
|
|
fd_set rfds, wfds;
|
|
async_hostent_t ahe;
|
|
#else /* HAVE_C_ARES */
|
|
struct hostent *hp;
|
|
#endif /* HAVE_C_ARES */
|
|
|
|
/*
|
|
* don't change it to inet_pton(AF_INET), they are not 100% compatible.
|
|
* inet_pton(AF_INET) does not support hexadecimal notation nor
|
|
* less-than-4 octet notation.
|
|
*/
|
|
if (!inet_aton(host, &ipaddr)) {
|
|
|
|
/* It's not a valid dotted-quad IP address; is it a valid
|
|
* host name?
|
|
*/
|
|
|
|
/* If we're not allowed to do name resolution, don't do name
|
|
* resolution...
|
|
*/
|
|
if (!gbl_resolv_flags.network_name ||
|
|
!gbl_resolv_flags.use_external_net_name_resolver) {
|
|
return FALSE;
|
|
}
|
|
|
|
#ifdef HAVE_C_ARES
|
|
if (! (gbl_resolv_flags.concurrent_dns) ||
|
|
name_resolve_concurrency < 1 ||
|
|
! async_dns_initialized) {
|
|
return FALSE;
|
|
}
|
|
ahe.addr_size = (int) sizeof (struct in_addr);
|
|
ahe.copied = 0;
|
|
ahe.addrp = addrp;
|
|
ares_gethostbyname(ghbn_chan, host, AF_INET, c_ares_ghi_cb, &ahe);
|
|
FD_ZERO(&rfds);
|
|
FD_ZERO(&wfds);
|
|
nfds = ares_fds(ghbn_chan, &rfds, &wfds);
|
|
if (nfds > 0) {
|
|
tvp = ares_timeout(ghbn_chan, &tv, &tv);
|
|
if (select(nfds, &rfds, &wfds, NULL, tvp) == -1) { /* call to select() failed */
|
|
fprintf(stderr, "Warning: call to select() failed, error is %s\n", g_strerror(errno));
|
|
return FALSE;
|
|
}
|
|
ares_process(ghbn_chan, &rfds, &wfds);
|
|
}
|
|
ares_cancel(ghbn_chan);
|
|
if (ahe.addr_size == ahe.copied) {
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
#else /* ! HAVE_C_ARES */
|
|
hp = gethostbyname(host);
|
|
if (hp == NULL) {
|
|
/* No. */
|
|
return FALSE;
|
|
/* Apparently, some versions of gethostbyaddr can
|
|
* return IPv6 addresses. */
|
|
} else if (hp->h_length <= (int) sizeof (struct in_addr)) {
|
|
memcpy(&ipaddr, hp->h_addr, hp->h_length);
|
|
} else {
|
|
return FALSE;
|
|
}
|
|
#endif /* HAVE_C_ARES */
|
|
} else {
|
|
/* Does the string really contain dotted-quad IP?
|
|
* Check against inet_atons that accept strings such as
|
|
* "130.230" as valid addresses and try to convert them
|
|
* to some form of a classful (host.net) notation.
|
|
*/
|
|
unsigned int a0, a1, a2, a3;
|
|
if (sscanf(host, "%u.%u.%u.%u", &a0, &a1, &a2, &a3) != 4)
|
|
return FALSE;
|
|
}
|
|
|
|
*addrp = ipaddr.s_addr;
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* Translate IPv6 numeric address or FQDN hostname, into binary IPv6 address.
|
|
* Return TRUE if we succeed and set "*addrp" to that numeric IP address;
|
|
* return FALSE if we fail.
|
|
*/
|
|
gboolean
|
|
get_host_ipaddr6(const char *host, struct e_in6_addr *addrp)
|
|
{
|
|
#ifdef HAVE_C_ARES
|
|
struct timeval tv = { 0, GHI_TIMEOUT }, *tvp;
|
|
int nfds;
|
|
fd_set rfds, wfds;
|
|
async_hostent_t ahe;
|
|
#elif defined(HAVE_GETHOSTBYNAME2)
|
|
struct hostent *hp;
|
|
#endif /* HAVE_C_ARES */
|
|
|
|
if (str_to_ip6(host, addrp))
|
|
return TRUE;
|
|
|
|
/* It's not a valid dotted-quad IP address; is it a valid
|
|
* host name?
|
|
*/
|
|
|
|
/* If we're not allowed to do name resolution, don't do name
|
|
* resolution...
|
|
*/
|
|
if (!gbl_resolv_flags.network_name ||
|
|
!gbl_resolv_flags.use_external_net_name_resolver) {
|
|
return FALSE;
|
|
}
|
|
|
|
/* try FQDN */
|
|
#ifdef HAVE_C_ARES
|
|
if (! (gbl_resolv_flags.concurrent_dns) ||
|
|
name_resolve_concurrency < 1 ||
|
|
! async_dns_initialized) {
|
|
return FALSE;
|
|
}
|
|
ahe.addr_size = (int) sizeof (struct e_in6_addr);
|
|
ahe.copied = 0;
|
|
ahe.addrp = addrp;
|
|
ares_gethostbyname(ghbn_chan, host, AF_INET6, c_ares_ghi_cb, &ahe);
|
|
FD_ZERO(&rfds);
|
|
FD_ZERO(&wfds);
|
|
nfds = ares_fds(ghbn_chan, &rfds, &wfds);
|
|
if (nfds > 0) {
|
|
tvp = ares_timeout(ghbn_chan, &tv, &tv);
|
|
if (select(nfds, &rfds, &wfds, NULL, tvp) == -1) { /* call to select() failed */
|
|
fprintf(stderr, "Warning: call to select() failed, error is %s\n", g_strerror(errno));
|
|
return FALSE;
|
|
}
|
|
ares_process(ghbn_chan, &rfds, &wfds);
|
|
}
|
|
ares_cancel(ghbn_chan);
|
|
if (ahe.addr_size == ahe.copied) {
|
|
return TRUE;
|
|
}
|
|
#elif defined(HAVE_GETHOSTBYNAME2)
|
|
hp = gethostbyname2(host, AF_INET6);
|
|
if (hp != NULL && hp->h_length == sizeof(struct e_in6_addr)) {
|
|
memcpy(addrp, hp->h_addr, hp->h_length);
|
|
return TRUE;
|
|
}
|
|
#endif
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/*
|
|
* Find out whether a hostname resolves to an ip or ipv6 address
|
|
* Return "ip6" if it is IPv6, "ip" otherwise (including the case
|
|
* that we don't know)
|
|
*/
|
|
const char* host_ip_af(const char *host
|
|
#ifndef HAVE_GETHOSTBYNAME2
|
|
_U_
|
|
#endif
|
|
)
|
|
{
|
|
#ifdef HAVE_GETHOSTBYNAME2
|
|
struct hostent *h;
|
|
return (h = gethostbyname2(host, AF_INET6)) && h->h_addrtype == AF_INET6 ? "ip6" : "ip";
|
|
#else
|
|
return "ip";
|
|
#endif
|
|
}
|
|
|
|
GHashTable *
|
|
get_manuf_hashtable(void)
|
|
{
|
|
return manuf_hashtable;
|
|
}
|
|
|
|
GHashTable *
|
|
get_wka_hashtable(void)
|
|
{
|
|
return wka_hashtable;
|
|
}
|
|
|
|
GHashTable *
|
|
get_eth_hashtable(void)
|
|
{
|
|
return eth_hashtable;
|
|
}
|
|
|
|
GHashTable *
|
|
get_serv_port_hashtable(void)
|
|
{
|
|
return serv_port_hashtable;
|
|
}
|
|
|
|
GHashTable *
|
|
get_ipxnet_hash_table(void)
|
|
{
|
|
return ipxnet_hash_table;
|
|
}
|
|
|
|
GHashTable *
|
|
get_ipv4_hash_table(void)
|
|
{
|
|
return ipv4_hash_table;
|
|
}
|
|
|
|
GHashTable *
|
|
get_ipv6_hash_table(void)
|
|
{
|
|
return ipv6_hash_table;
|
|
}
|
|
/* Initialize all the address resolution subsystems in this file */
|
|
void
|
|
addr_resolv_init(void)
|
|
{
|
|
initialize_services();
|
|
initialize_ethers();
|
|
initialize_ipxnets();
|
|
/* host name initialization is done on a per-capture-file basis */
|
|
/*host_name_lookup_init();*/
|
|
}
|
|
|
|
/* Clean up all the address resolution subsystems in this file */
|
|
void
|
|
addr_resolv_cleanup(void)
|
|
{
|
|
service_name_lookup_cleanup();
|
|
eth_name_lookup_cleanup();
|
|
ipx_name_lookup_cleanup();
|
|
/* host name initialization is done on a per-capture-file basis */
|
|
/*host_name_lookup_cleanup();*/
|
|
}
|
|
|
|
gboolean
|
|
str_to_ip(const char *str, void *dst)
|
|
{
|
|
return inet_pton(AF_INET, str, dst) > 0;
|
|
}
|
|
|
|
gboolean
|
|
str_to_ip6(const char *str, void *dst)
|
|
{
|
|
return inet_pton(AF_INET6, str, dst) > 0;
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 4
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=4 tabstop=8 expandtab:
|
|
* :indentSize=4:tabSize=8:noTabs=true:
|
|
*/
|