![Guy Harris](/assets/img/avatar_default.png)
Everything else in Wireshark, including everything else in this file, uses snprintf(). (1990 called, they want their C standard back.)
1148 lines
33 KiB
C
1148 lines
33 KiB
C
/* address_types.c
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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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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include <string.h> /* for memcmp */
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#include <stdio.h>
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#include "packet.h"
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#include "address_types.h"
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#include "to_str.h"
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#include "addr_resolv.h"
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#include "wsutil/pint.h"
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#include "wsutil/str_util.h"
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#include "wsutil/inet_addr.h"
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#include <wsutil/ws_assert.h>
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#include <wsutil/pint.h>
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struct _address_type_t {
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int addr_type; /* From address_type enumeration or registered value */
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const char *name;
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const char *pretty_name;
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AddrValueToString addr_to_str;
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AddrValueToStringLen addr_str_len;
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AddrValueToByte addr_to_byte;
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AddrColFilterString addr_col_filter;
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AddrFixedLen addr_fixed_len;
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AddrNameResolutionToString addr_name_res_str;
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AddrNameResolutionLen addr_name_res_len;
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/* XXX - Some sort of compare functions (like ftype)? ***/
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};
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#define MAX_DISSECTOR_ADDR_TYPE 30
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#define MAX_ADDR_TYPE_VALUE (AT_END_OF_LIST+MAX_DISSECTOR_ADDR_TYPE)
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static int num_dissector_addr_type;
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static address_type_t dissector_type_addresses[MAX_DISSECTOR_ADDR_TYPE];
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/* Keep track of address_type_t's via their id number */
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static address_type_t* type_list[MAX_ADDR_TYPE_VALUE + 1];
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/*
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* If a user _does_ pass in a too-small buffer, this is probably
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* going to be too long to fit. However, even a partial string
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* starting with "[Buf" should provide enough of a clue to be
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* useful.
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*/
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#define BUF_TOO_SMALL_ERR "[Buffer too small]"
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#define _addr_return_if_nospace(str_len, buf, buf_len) \
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do { \
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if ((str_len) > (buf_len)) { \
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(void)g_strlcpy(buf, BUF_TOO_SMALL_ERR, buf_len); \
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return buf_len; \
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} \
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} while (0)
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static void address_type_register(int addr_type, address_type_t *at)
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{
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/* Check input */
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ws_assert(addr_type < MAX_ADDR_TYPE_VALUE);
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ws_assert(addr_type == at->addr_type);
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/* Don't re-register. */
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ws_assert(type_list[addr_type] == NULL);
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/* Sanity check */
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ws_assert(at->name);
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ws_assert(at->pretty_name);
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ws_assert(at->addr_to_str);
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ws_assert(at->addr_str_len);
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ws_assert(((at->addr_name_res_str != NULL) && (at->addr_name_res_len != NULL)) ||
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((at->addr_name_res_str == NULL) && (at->addr_name_res_len == NULL)));
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type_list[addr_type] = at;
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}
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int address_type_dissector_register(const char* name, const char* pretty_name,
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AddrValueToString to_str_func, AddrValueToStringLen str_len_func,
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AddrValueToByte to_bytes_func, AddrColFilterString col_filter_str_func, AddrFixedLen fixed_len_func,
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AddrNameResolutionToString name_res_str_func, AddrNameResolutionLen name_res_len_func)
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{
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int addr_type;
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/* Ensure valid data/functions for required fields */
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ws_assert(name);
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ws_assert(pretty_name);
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ws_assert(to_str_func);
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ws_assert(str_len_func);
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/* Either have both or neither */
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ws_assert(((name_res_str_func != NULL) && (name_res_len_func != NULL)) ||
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((name_res_str_func == NULL) && (name_res_len_func == NULL)));
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/* This shouldn't happen, so flag it for fixing */
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ws_assert(num_dissector_addr_type < MAX_DISSECTOR_ADDR_TYPE);
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addr_type = AT_END_OF_LIST+num_dissector_addr_type;
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dissector_type_addresses[num_dissector_addr_type].addr_type = addr_type;
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dissector_type_addresses[num_dissector_addr_type].name = name;
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dissector_type_addresses[num_dissector_addr_type].pretty_name = pretty_name;
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dissector_type_addresses[num_dissector_addr_type].addr_to_str = to_str_func;
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dissector_type_addresses[num_dissector_addr_type].addr_str_len = str_len_func;
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dissector_type_addresses[num_dissector_addr_type].addr_to_byte = to_bytes_func;
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dissector_type_addresses[num_dissector_addr_type].addr_col_filter = col_filter_str_func;
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dissector_type_addresses[num_dissector_addr_type].addr_fixed_len = fixed_len_func;
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dissector_type_addresses[num_dissector_addr_type].addr_name_res_str = name_res_str_func;
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dissector_type_addresses[num_dissector_addr_type].addr_name_res_len = name_res_len_func;
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type_list[addr_type] = &dissector_type_addresses[num_dissector_addr_type];
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num_dissector_addr_type++;
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return addr_type;
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}
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int address_type_get_by_name(const char* name)
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{
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address_type_t** addr;
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for (addr = type_list; *addr != NULL; addr++)
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{
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if (!strcmp((*addr)->name, name))
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{
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return (*addr)->addr_type;
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}
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}
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return -1;
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}
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/******************************************************************************
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* AT_NONE
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******************************************************************************/
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int none_addr_to_str(const address* addr _U_, gchar *buf, int buf_len _U_)
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{
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buf[0] = '\0';
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return none_addr_str_len(addr);
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}
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int none_addr_str_len(const address* addr _U_)
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{
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return 1; /* NULL character for empty string */
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}
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int none_addr_len(void)
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{
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return 0;
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}
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static int none_name_res_len(void)
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{
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return 5;
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}
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static const gchar* none_name_res_str(const address* addr _U_)
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{
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return "NONE";
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}
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/******************************************************************************
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* AT_ETHER
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******************************************************************************/
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int ether_to_str(const address* addr, gchar *buf, int buf_len)
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{
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_addr_return_if_nospace(18, buf, buf_len);
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bytes_to_hexstr_punct(buf, (const guint8*)addr->data, 6, ':');
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buf[17] = '\0';
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return ether_str_len(addr);
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}
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int ether_str_len(const address* addr _U_)
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{
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return 18;
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}
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static const char* ether_col_filter_str(const address* addr _U_, gboolean is_src)
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{
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if (is_src)
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return "eth.src";
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return "eth.dst";
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}
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int ether_len(void)
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{
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return 6;
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}
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const gchar* ether_name_resolution_str(const address* addr)
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{
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return get_ether_name((const guint8 *)addr->data);
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}
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int ether_name_resolution_len(void)
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{
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return MAX_ADDR_STR_LEN; /* XXX - This can be lower */
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}
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/******************************************************************************
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* AT_IPv4
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******************************************************************************/
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static int ipv4_to_str(const address* addr, gchar *buf, int buf_len)
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{
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ip_to_str_buf((const guint8*)addr->data, buf, buf_len);
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return (int)(strlen(buf)+1);
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}
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static int ipv4_str_len(const address* addr _U_)
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{
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return WS_INET_ADDRSTRLEN;
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}
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static const char* ipv4_col_filter_str(const address* addr _U_, gboolean is_src)
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{
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if (is_src)
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return "ip.src";
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return "ip.dst";
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}
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static int ipv4_len(void)
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{
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return 4;
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}
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static const gchar* ipv4_name_res_str(const address* addr)
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{
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guint32 ip4_addr;
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memcpy(&ip4_addr, addr->data, sizeof ip4_addr);
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return get_hostname(ip4_addr);
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}
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static int ipv4_name_res_len(void)
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{
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return MAX_ADDR_STR_LEN; /* XXX - This can be lower */
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}
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/******************************************************************************
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* AT_IPv6
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******************************************************************************/
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static int ipv6_to_str(const address* addr, gchar *buf, int buf_len)
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{
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ip6_to_str_buf((const ws_in6_addr *)addr->data, buf, buf_len);
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return (int)(strlen(buf) + 1);
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}
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static int ipv6_str_len(const address* addr _U_)
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{
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return WS_INET6_ADDRSTRLEN;
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}
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static const char* ipv6_col_filter_str(const address* addr _U_, gboolean is_src)
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{
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if (is_src)
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return "ipv6.src";
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return "ipv6.dst";
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}
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static int ipv6_len(void)
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{
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return 16;
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}
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static const gchar* ipv6_name_res_str(const address* addr)
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{
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ws_in6_addr ip6_addr;
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memcpy(&ip6_addr.bytes, addr->data, sizeof ip6_addr.bytes);
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return get_hostname6(&ip6_addr);
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}
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static int ipv6_name_res_len(void)
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{
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return MAX_ADDR_STR_LEN; /* XXX - This can be lower */
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}
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/******************************************************************************
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* AT_IPX
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******************************************************************************/
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static int ipx_to_str(const address* addr, gchar *buf, int buf_len)
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{
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_addr_return_if_nospace(22, buf, buf_len);
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const guint8 *addrdata = (const guint8 *)addr->data;
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gchar *bufp = buf;
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bufp = bytes_to_hexstr(bufp, &addrdata[0], 4); /* 8 bytes */
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*bufp++ = '.'; /*1 byte */
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bufp = bytes_to_hexstr(bufp, &addrdata[4], 6); /* 12 bytes */
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*bufp++ = '\0'; /* NULL terminate */
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return (int)(bufp - buf);
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}
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static int ipx_str_len(const address* addr _U_)
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{
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return 22;
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}
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static int ipx_len(void)
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{
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return 10;
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}
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/******************************************************************************
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* AT_FC
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******************************************************************************/
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static int fc_to_str(const address* addr, gchar *buf, int buf_len)
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{
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_addr_return_if_nospace(9, buf, buf_len);
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gchar *bufp = buf;
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bufp = bytes_to_hexstr_punct(bufp, (const guint8 *)addr->data, 3, '.');
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*bufp++ = '\0'; /* NULL terminate */
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return (int)(bufp - buf);
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}
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static int fc_str_len(const address* addr _U_)
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{
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return 9;
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}
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static int fc_len(void)
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{
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return 3;
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}
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/******************************************************************************
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* AT_FCWWN
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* XXX - Doubles as a "field type", should it be defined here?
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******************************************************************************/
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/* FC Network Header Network Address Authority Identifiers */
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#define FC_NH_NAA_IEEE 1 /* IEEE 802.1a */
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#define FC_NH_NAA_IEEE_E 2 /* IEEE Exteneded */
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#define FC_NH_NAA_LOCAL 3
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#define FC_NH_NAA_IP 4 /* 32-bit IP address */
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#define FC_NH_NAA_IEEE_R 5 /* IEEE Registered */
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#define FC_NH_NAA_IEEE_R_E 6 /* IEEE Registered Exteneded */
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/* according to FC-PH 3 draft these are now reclaimed and reserved */
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#define FC_NH_NAA_CCITT_INDV 12 /* CCITT 60 bit individual address */
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#define FC_NH_NAA_CCITT_GRP 14 /* CCITT 60 bit group address */
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static int fcwwn_str_len(const address* addr _U_)
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{
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return 24;
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}
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static int fcwwn_to_str(const address* addr, gchar *buf, int buf_len)
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{
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_addr_return_if_nospace(24, buf, buf_len);
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const guint8 *addrp = (const guint8*)addr->data;
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buf = bytes_to_hexstr_punct(buf, addrp, 8, ':'); /* 23 bytes */
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*buf = '\0';
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return fcwwn_str_len(addr);
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}
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static int fcwwn_len(void)
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{
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return FCWWN_ADDR_LEN;
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}
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static const gchar* fcwwn_name_res_str(const address* addr)
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{
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const guint8 *addrp = (const guint8*)addr->data;
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int fmt;
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guint8 oui[6];
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fmt = (addrp[0] & 0xF0) >> 4;
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switch (fmt) {
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case FC_NH_NAA_IEEE:
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case FC_NH_NAA_IEEE_E:
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memcpy (oui, &addrp[2], 6);
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return get_manuf_name(oui);
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case FC_NH_NAA_IEEE_R:
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oui[0] = ((addrp[0] & 0x0F) << 4) | ((addrp[1] & 0xF0) >> 4);
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oui[1] = ((addrp[1] & 0x0F) << 4) | ((addrp[2] & 0xF0) >> 4);
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oui[2] = ((addrp[2] & 0x0F) << 4) | ((addrp[3] & 0xF0) >> 4);
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oui[3] = ((addrp[3] & 0x0F) << 4) | ((addrp[4] & 0xF0) >> 4);
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oui[4] = ((addrp[4] & 0x0F) << 4) | ((addrp[5] & 0xF0) >> 4);
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oui[5] = ((addrp[5] & 0x0F) << 4) | ((addrp[6] & 0xF0) >> 4);
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return get_manuf_name(oui);
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}
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return "";
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}
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static int fcwwn_name_res_len(void)
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{
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return MAX_ADDR_STR_LEN; /* XXX - This can be lower */
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}
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/******************************************************************************
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* AT_STRINGZ
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******************************************************************************/
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static int stringz_addr_to_str(const address* addr, gchar *buf, int buf_len)
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{
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(void) g_strlcpy(buf, (const gchar *)addr->data, buf_len);
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return (int)(strlen(buf)+1);
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}
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static int stringz_addr_str_len(const address* addr)
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{
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return addr->len+1;
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}
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/******************************************************************************
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* AT_EUI64
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******************************************************************************/
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static int eui64_addr_to_str(const address* addr, gchar *buf, int buf_len)
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{
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_addr_return_if_nospace(EUI64_STR_LEN, buf, buf_len);
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buf = bytes_to_hexstr_punct(buf, (const guint8 *)addr->data, 8, ':');
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*buf = '\0'; /* NULL terminate */
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return EUI64_STR_LEN;
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}
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static int eui64_str_len(const address* addr _U_)
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{
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return EUI64_STR_LEN;
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}
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static int eui64_len(void)
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{
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return 8;
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}
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/******************************************************************************
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* AT_IB
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******************************************************************************/
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static int
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ib_addr_to_str(const address *addr, gchar *buf, int buf_len)
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{
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char buf_ip6[WS_INET6_ADDRSTRLEN];
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if (addr->len >= 16) { /* GID is 128bits */
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ws_inet_ntop6((const ws_in6_addr *)addr->data, buf_ip6, sizeof(buf_ip6));
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snprintf(buf, buf_len, "GID: %s", buf_ip6);
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}
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else {
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/* this is a LID (16 bits) */
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snprintf(buf,buf_len,"LID: %u", *(const guint16 *)addr->data);
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}
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return (int)(strlen(buf)+1);
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}
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static int ib_str_len(const address* addr _U_)
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{
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return MAX_ADDR_STR_LEN; /* XXX - This is overkill */
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}
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/******************************************************************************
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* AT_AX25
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******************************************************************************/
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static int ax25_addr_to_str(const address* addr, gchar *buf, int buf_len)
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{
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_addr_return_if_nospace(10, buf, buf_len);
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const guint8 *addrdata = (const guint8 *)addr->data;
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int i, ssid;
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gchar *bufp = buf;
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for (i = 0; i < 6; i++) {
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if (addrdata[i] == 0x40) {
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/* end of callsign, start of space-padding */
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break;
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}
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*bufp++ = printable_char_or_period(addrdata[i] >> 1);
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}
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ssid = (addrdata[6] >> 1) & 0x0f;
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if (ssid != 0) {
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bufp += snprintf(bufp,buf_len-(int)(bufp-buf),"-%d",ssid);
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} else {
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*bufp++ = '\0'; /* NULL terminate */
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}
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return (int)(bufp - buf);
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}
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static int ax25_addr_str_len(const address* addr _U_)
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{
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return 10; /* callsign (6) + dash (1) + ssid (2) + nul (1) = 10 */
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}
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static const char* ax25_col_filter_str(const address* addr _U_, gboolean is_src)
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{
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if (is_src)
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return "ax25.src";
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return "ax25.dst";
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}
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|
|
static int ax25_len(void)
|
|
{
|
|
return AX25_ADDR_LEN;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* AT_VINES
|
|
******************************************************************************/
|
|
|
|
static int vines_addr_to_str(const address* addr, gchar *buf, int buf_len)
|
|
{
|
|
_addr_return_if_nospace(14, buf, buf_len);
|
|
const guint8 *addr_data = (const guint8 *)addr->data;
|
|
gchar *bufp = buf;
|
|
|
|
bufp = dword_to_hex(bufp, pntoh32(&addr_data[0])); /* 8 bytes */
|
|
*bufp++ = '.'; /* 1 byte */
|
|
bufp = word_to_hex(bufp, pntoh16(&addr_data[4])); /* 4 bytes */
|
|
*bufp++ = '\0'; /* NULL terminate */
|
|
|
|
return (int)(bufp - buf);
|
|
}
|
|
|
|
static int vines_addr_str_len(const address* addr _U_)
|
|
{
|
|
return 14;
|
|
}
|
|
|
|
static int vines_len(void)
|
|
{
|
|
return VINES_ADDR_LEN;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* AT_NUMERIC
|
|
******************************************************************************/
|
|
|
|
/* G_MAXUINT64 is defined as 0xffffffffffffffffU which in itself represents
|
|
* 18,446,744,073,709,551,615 as decimal, which has 20 characters. Adding 21
|
|
* as for null-byte termination.
|
|
* All values are derived from the counterparts defined in glib/basic-types */
|
|
const size_t MAX_UINT64_WIDTH = 21;
|
|
const size_t MAX_UINT32_WIDTH = 11;
|
|
const size_t MAX_UINT16_WIDTH = 6;
|
|
const size_t MAX_UINT8_WIDTH = 4;
|
|
|
|
static int numeric_addr_str_len(const address* addr)
|
|
{
|
|
if (addr->len == (int) sizeof(guint64)) {
|
|
return (int) MAX_UINT64_WIDTH;
|
|
} else if (addr->len == (int) sizeof(guint32)) {
|
|
return (int) MAX_UINT32_WIDTH;
|
|
} else if (addr->len == (int) sizeof(guint16)) {
|
|
return (int) MAX_UINT16_WIDTH;
|
|
}
|
|
|
|
return (int) MAX_UINT8_WIDTH;
|
|
}
|
|
|
|
static int numeric_addr_to_str(const address* addr, gchar *buf, int buf_len)
|
|
{
|
|
int ret;
|
|
|
|
if (addr->len == (int) sizeof(guint64)) {
|
|
ret = snprintf(buf, buf_len, "%"PRIu64, *(guint64 *)addr->data);
|
|
} else if (addr->len == (int) sizeof(guint32)) {
|
|
ret = snprintf(buf, buf_len, "%"PRIu32, *(guint32 *)addr->data);
|
|
} else if (addr->len == (int) sizeof(guint16)) {
|
|
ret = snprintf(buf, buf_len, "%"PRIu16, *(guint16 *)addr->data);
|
|
} else {
|
|
ret = snprintf(buf, buf_len, "%"PRIu8, *(guint8 *)addr->data);
|
|
}
|
|
|
|
return ret + 1;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* AT_MCTP
|
|
******************************************************************************/
|
|
|
|
static int mctp_addr_to_str(const address* addr, gchar *buf, int buf_len _U_)
|
|
{
|
|
const guint8 *addr_data = (const guint8 *)addr->data;
|
|
gchar *bufp = buf;
|
|
|
|
return snprintf(bufp, 4, "%d", addr_data[0]);
|
|
}
|
|
|
|
static int mctp_addr_str_len(const address* addr _U_)
|
|
{
|
|
return 4;
|
|
}
|
|
|
|
static int mctp_len(void)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* END OF PROVIDED ADDRESS TYPES
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
|
|
void address_types_initialize(void)
|
|
{
|
|
static address_type_t none_address = {
|
|
AT_NONE, /* addr_type */
|
|
"AT_NONE", /* name */
|
|
"No address", /* pretty_name */
|
|
none_addr_to_str, /* addr_to_str */
|
|
none_addr_str_len, /* addr_str_len */
|
|
NULL, /* addr_to_byte */
|
|
NULL, /* addr_col_filter */
|
|
none_addr_len, /* addr_fixed_len */
|
|
none_name_res_str, /* addr_name_res_str */
|
|
none_name_res_len, /* addr_name_res_len */
|
|
};
|
|
|
|
static address_type_t ether_address = {
|
|
AT_ETHER, /* addr_type */
|
|
"AT_ETHER", /* name */
|
|
"Ethernet address", /* pretty_name */
|
|
ether_to_str, /* addr_to_str */
|
|
ether_str_len, /* addr_str_len */
|
|
NULL, /* addr_to_byte */
|
|
ether_col_filter_str, /* addr_col_filter */
|
|
ether_len, /* addr_fixed_len */
|
|
ether_name_resolution_str, /* addr_name_res_str */
|
|
ether_name_resolution_len, /* addr_name_res_len */
|
|
};
|
|
|
|
static address_type_t ipv4_address = {
|
|
AT_IPv4, /* addr_type */
|
|
"AT_IPv4", /* name */
|
|
"IPv4 address", /* pretty_name */
|
|
ipv4_to_str, /* addr_to_str */
|
|
ipv4_str_len, /* addr_str_len */
|
|
NULL, /* addr_to_byte */
|
|
ipv4_col_filter_str, /* addr_col_filter */
|
|
ipv4_len, /* addr_fixed_len */
|
|
ipv4_name_res_str, /* addr_name_res_str */
|
|
ipv4_name_res_len, /* addr_name_res_len */
|
|
};
|
|
|
|
static address_type_t ipv6_address = {
|
|
AT_IPv6, /* addr_type */
|
|
"AT_IPv6", /* name */
|
|
"IPv6 address", /* pretty_name */
|
|
ipv6_to_str, /* addr_to_str */
|
|
ipv6_str_len, /* addr_str_len */
|
|
NULL, /* addr_to_byte */
|
|
ipv6_col_filter_str, /* addr_col_filter */
|
|
ipv6_len, /* addr_fixed_len */
|
|
ipv6_name_res_str, /* addr_name_res_str */
|
|
ipv6_name_res_len, /* addr_name_res_len */
|
|
};
|
|
|
|
static address_type_t ipx_address = {
|
|
AT_IPX, /* addr_type */
|
|
"AT_IPX", /* name */
|
|
"IPX address", /* pretty_name */
|
|
ipx_to_str, /* addr_to_str */
|
|
ipx_str_len, /* addr_str_len */
|
|
NULL, /* addr_to_byte */
|
|
NULL, /* addr_col_filter */
|
|
ipx_len, /* addr_fixed_len */
|
|
NULL, /* addr_name_res_str */
|
|
NULL, /* addr_name_res_len */
|
|
};
|
|
|
|
static address_type_t fc_address = {
|
|
AT_FC, /* addr_type */
|
|
"AT_FC", /* name */
|
|
"FC address", /* pretty_name */
|
|
fc_to_str, /* addr_to_str */
|
|
fc_str_len, /* addr_str_len */
|
|
NULL, /* addr_to_byte */
|
|
NULL, /* addr_col_filter */
|
|
fc_len, /* addr_fixed_len */
|
|
NULL, /* addr_name_res_str */
|
|
NULL, /* addr_name_res_len */
|
|
};
|
|
|
|
static address_type_t fcwwn_address = {
|
|
AT_FCWWN, /* addr_type */
|
|
"AT_FCWWN", /* name */
|
|
"Fibre Channel WWN", /* pretty_name */
|
|
fcwwn_to_str, /* addr_to_str */
|
|
fcwwn_str_len, /* addr_str_len */
|
|
NULL, /* addr_to_byte */
|
|
NULL, /* addr_col_filter */
|
|
fcwwn_len, /* addr_fixed_len */
|
|
fcwwn_name_res_str, /* addr_name_res_str */
|
|
fcwwn_name_res_len, /* addr_name_res_len */
|
|
};
|
|
|
|
static address_type_t stringz_address = {
|
|
AT_STRINGZ, /* addr_type */
|
|
"AT_STRINGZ", /* name */
|
|
"String address", /* pretty_name */
|
|
stringz_addr_to_str, /* addr_to_str */
|
|
stringz_addr_str_len, /* addr_str_len */
|
|
NULL, /* addr_to_byte */
|
|
NULL, /* addr_col_filter */
|
|
NULL, /* addr_fixed_len */
|
|
NULL, /* addr_name_res_str */
|
|
NULL, /* addr_name_res_len */
|
|
};
|
|
|
|
static address_type_t eui64_address = {
|
|
AT_EUI64, /* addr_type */
|
|
"AT_EUI64", /* name */
|
|
"IEEE EUI-64", /* pretty_name */
|
|
eui64_addr_to_str, /* addr_to_str */
|
|
eui64_str_len, /* addr_str_len */
|
|
NULL, /* addr_to_byte */
|
|
NULL, /* addr_col_filter */
|
|
eui64_len, /* addr_fixed_len */
|
|
NULL, /* addr_name_res_str */
|
|
NULL, /* addr_name_res_len */
|
|
};
|
|
|
|
static address_type_t ib_address = {
|
|
AT_IB, /* addr_type */
|
|
"AT_IB", /* name */
|
|
"Infiniband GID/LID", /* pretty_name */
|
|
ib_addr_to_str, /* addr_to_str */
|
|
ib_str_len, /* addr_str_len */
|
|
NULL, /* addr_to_byte */
|
|
NULL, /* addr_col_filter */
|
|
NULL, /* addr_fixed_len */
|
|
NULL, /* addr_name_res_str */
|
|
NULL, /* addr_name_res_len */
|
|
};
|
|
|
|
static address_type_t ax25_address = {
|
|
AT_AX25, /* addr_type */
|
|
"AT_AX25", /* name */
|
|
"AX.25 Address", /* pretty_name */
|
|
ax25_addr_to_str, /* addr_to_str */
|
|
ax25_addr_str_len,/* addr_str_len */
|
|
NULL, /* addr_to_byte */
|
|
ax25_col_filter_str, /* addr_col_filter */
|
|
ax25_len, /* addr_fixed_len */
|
|
NULL, /* addr_name_res_str */
|
|
NULL, /* addr_name_res_len */
|
|
};
|
|
static address_type_t vines_address = {
|
|
AT_VINES, /* addr_type */
|
|
"AT_VINES", /* name */
|
|
"Banyan Vines Address", /* pretty_name */
|
|
vines_addr_to_str, /* addr_to_str */
|
|
vines_addr_str_len,/* addr_str_len */
|
|
NULL, /* addr_to_byte */
|
|
NULL, /* addr_col_filter */
|
|
vines_len, /* addr_fixed_len */
|
|
NULL, /* addr_name_res_str */
|
|
NULL, /* addr_name_res_len */
|
|
};
|
|
|
|
static address_type_t numeric_address = {
|
|
AT_NUMERIC, /* addr_type */
|
|
"AT_NUMERIC", /* name */
|
|
"Simple numeric address", /* pretty_name */
|
|
numeric_addr_to_str, /* addr_to_str */
|
|
numeric_addr_str_len, /* addr_str_len */
|
|
NULL, /* addr_to_byte */
|
|
NULL, /* addr_col_filter */
|
|
NULL, /* addr_fixed_len */
|
|
NULL, /* addr_name_res_str */
|
|
NULL, /* addr_name_res_len */
|
|
};
|
|
static address_type_t mctp_address = {
|
|
AT_MCTP, /* addr_type */
|
|
"AT_MCTP" , /* name */
|
|
"MCTP Address", /* pretty_name */
|
|
mctp_addr_to_str, /* addr_to_str */
|
|
mctp_addr_str_len, /* addr_str_len */
|
|
NULL, /* addr_to_byte */
|
|
NULL, /* addr_col_filter */
|
|
mctp_len, /* addr_fixed_len */
|
|
NULL, /* addr_name_res_str */
|
|
NULL, /* addr_name_res_len */
|
|
};
|
|
|
|
num_dissector_addr_type = 0;
|
|
|
|
/* Initialize the type array. This is mostly for handling
|
|
"dissector registered" address type range (for NULL checking) */
|
|
memset(type_list, 0, (MAX_ADDR_TYPE_VALUE + 1)*sizeof(address_type_t*));
|
|
|
|
address_type_register(AT_NONE, &none_address );
|
|
address_type_register(AT_ETHER, ðer_address );
|
|
address_type_register(AT_IPv4, &ipv4_address );
|
|
address_type_register(AT_IPv6, &ipv6_address );
|
|
address_type_register(AT_IPX, &ipx_address );
|
|
address_type_register(AT_FC, &fc_address );
|
|
address_type_register(AT_FCWWN, &fcwwn_address );
|
|
address_type_register(AT_STRINGZ, &stringz_address );
|
|
address_type_register(AT_EUI64, &eui64_address );
|
|
address_type_register(AT_IB, &ib_address );
|
|
address_type_register(AT_AX25, &ax25_address );
|
|
address_type_register(AT_VINES, &vines_address );
|
|
address_type_register(AT_NUMERIC, &numeric_address );
|
|
address_type_register(AT_MCTP, &mctp_address );
|
|
}
|
|
|
|
/* Given an address type id, return an address_type_t* */
|
|
#define ADDR_TYPE_LOOKUP(addr_type, result) \
|
|
/* Check input */ \
|
|
ws_assert(addr_type < MAX_ADDR_TYPE_VALUE); \
|
|
result = type_list[addr_type];
|
|
|
|
static int address_type_get_length(const address* addr)
|
|
{
|
|
address_type_t *at;
|
|
|
|
ADDR_TYPE_LOOKUP(addr->type, at);
|
|
|
|
if (at == NULL)
|
|
return 0;
|
|
|
|
return at->addr_str_len(addr);
|
|
}
|
|
|
|
gchar*
|
|
address_to_str(wmem_allocator_t *scope, const address *addr)
|
|
{
|
|
gchar *str;
|
|
int len = address_type_get_length(addr);
|
|
|
|
if (len <= 0)
|
|
len = MAX_ADDR_STR_LEN;
|
|
|
|
str=(gchar *)wmem_alloc(scope, len);
|
|
address_to_str_buf(addr, str, len);
|
|
return str;
|
|
}
|
|
|
|
void address_to_str_buf(const address* addr, gchar *buf, int buf_len)
|
|
{
|
|
address_type_t *at;
|
|
|
|
if (!buf || !buf_len)
|
|
return;
|
|
|
|
ADDR_TYPE_LOOKUP(addr->type, at);
|
|
|
|
if ((at == NULL) || (at->addr_to_str == NULL))
|
|
{
|
|
buf[0] = '\0';
|
|
return;
|
|
}
|
|
|
|
at->addr_to_str(addr, buf, buf_len);
|
|
}
|
|
|
|
|
|
guint address_to_bytes(const address *addr, guint8 *buf, guint buf_len)
|
|
{
|
|
address_type_t *at;
|
|
guint copy_len = 0;
|
|
|
|
if (!buf || !buf_len)
|
|
return 0;
|
|
|
|
ADDR_TYPE_LOOKUP(addr->type, at);
|
|
|
|
if (at == NULL)
|
|
return 0;
|
|
|
|
if (at->addr_to_byte == NULL)
|
|
{
|
|
/* If a specific function isn't provided, just do a memcpy */
|
|
copy_len = MIN(((guint)addr->len), buf_len);
|
|
memcpy(buf, addr->data, copy_len);
|
|
}
|
|
else
|
|
{
|
|
copy_len = at->addr_to_byte(addr, buf, buf_len);
|
|
}
|
|
|
|
return copy_len;
|
|
}
|
|
|
|
const gchar *
|
|
address_to_name(const address *addr)
|
|
{
|
|
address_type_t *at;
|
|
|
|
ADDR_TYPE_LOOKUP(addr->type, at);
|
|
|
|
if (at == NULL)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* XXX - addr_name_res_str is expected to return a string from
|
|
* a persistent database, so that it lives a long time, past
|
|
* the lifetime of addr itself.
|
|
*
|
|
* We'd like to avoid copying, so this is what we do here.
|
|
*/
|
|
switch (addr->type) {
|
|
|
|
case AT_STRINGZ:
|
|
return (const gchar *)addr->data;
|
|
|
|
default:
|
|
if (at->addr_name_res_str != NULL)
|
|
return at->addr_name_res_str(addr);
|
|
else
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
gchar *
|
|
address_to_display(wmem_allocator_t *allocator, const address *addr)
|
|
{
|
|
gchar *str = NULL;
|
|
const gchar *result = address_to_name(addr);
|
|
|
|
if (result != NULL) {
|
|
str = wmem_strdup(allocator, result);
|
|
}
|
|
else if (addr->type == AT_NONE) {
|
|
str = wmem_strdup(allocator, "NONE");
|
|
}
|
|
else {
|
|
str = (gchar *) wmem_alloc(allocator, MAX_ADDR_STR_LEN);
|
|
address_to_str_buf(addr, str, MAX_ADDR_STR_LEN);
|
|
}
|
|
|
|
return str;
|
|
}
|
|
|
|
static void address_with_resolution_to_str_buf(const address* addr, gchar *buf, int buf_len)
|
|
{
|
|
address_type_t *at;
|
|
int addr_len;
|
|
gsize pos;
|
|
|
|
if (!buf || !buf_len)
|
|
return;
|
|
|
|
ADDR_TYPE_LOOKUP(addr->type, at);
|
|
|
|
if (at == NULL)
|
|
{
|
|
buf[0] = '\0';
|
|
return;
|
|
}
|
|
|
|
#if 0 /* XXX - If this remains a static function, we've already made this check in the only
|
|
function that can call it. If this function becomes "public", need to put this
|
|
check back in */
|
|
/* No name resolution support, just return address string */
|
|
if (at->addr_name_res_str == NULL)
|
|
return address_to_str_buf(addr, buf, buf_len);
|
|
#endif
|
|
|
|
/* Copy the resolved name */
|
|
g_strlcpy(buf, at->addr_name_res_str(addr), buf_len);
|
|
|
|
/* Get the length of the copied resolved name */
|
|
pos = strlen(buf);
|
|
|
|
/* Get an upper bound on the length of the address string. */
|
|
addr_len = at->addr_str_len(addr);
|
|
/*
|
|
* That includes the terminating '\0', so we subtract 1
|
|
* to get the length prior to the terminator.
|
|
*/
|
|
addr_len--;
|
|
|
|
/*
|
|
* If the upper bound is 0, that means that the address string is
|
|
* empty, so don't add it after the resolved name.
|
|
*/
|
|
if (addr_len == 0)
|
|
return;
|
|
|
|
/*
|
|
* If the resolved name is an empty string, don't wrap parentheses
|
|
* around the address string.
|
|
*/
|
|
if (pos == 0) {
|
|
/*
|
|
* The resolved name is an empty string.
|
|
* Make sure there's room in the buffer for the address string;
|
|
* addr_len + 1 includes the terminating '\0', and buf_len
|
|
* includes room for the terminating '\0', so if the former
|
|
* is greater than the latter, there isn't room.
|
|
*/
|
|
if (addr_len + 1 > buf_len)
|
|
return;
|
|
|
|
/* There is; just put the address string into the buffer. */
|
|
at->addr_to_str(addr, buf, buf_len);
|
|
} else {
|
|
/*
|
|
* Make sure there is enough room for the maximum length of the
|
|
* address string wrapped in parentheses. That's pos (the
|
|
* length of the resolved name plus 2 (for " (" plus addr_len
|
|
* (the length of the address string) plus 2 (for ")\0");
|
|
* it must not be greater than the buffer length.
|
|
*/
|
|
if ((int)(pos + 4 + addr_len) > buf_len)
|
|
return;
|
|
|
|
buf[pos++] = ' ';
|
|
buf[pos++] = '(';
|
|
|
|
addr_len = at->addr_to_str(addr, &buf[pos], (int)(buf_len-pos));
|
|
pos += addr_len - 1; /* addr_len includes the trailing '\0' */
|
|
|
|
buf[pos++] = ')';
|
|
buf[pos++] = '\0';
|
|
}
|
|
}
|
|
|
|
gchar* address_with_resolution_to_str(wmem_allocator_t *scope, const address *addr)
|
|
{
|
|
address_type_t *at;
|
|
int len;
|
|
gchar *str;
|
|
|
|
ADDR_TYPE_LOOKUP(addr->type, at);
|
|
|
|
if (at == NULL)
|
|
return wmem_strdup(scope, "");
|
|
|
|
/* No name resolution support, just return address string */
|
|
if ((at->addr_name_res_str == NULL) ||
|
|
(ADDR_RESOLV_MACADDR(addr) && !gbl_resolv_flags.mac_name) ||
|
|
(ADDR_RESOLV_NETADDR(addr) && !gbl_resolv_flags.network_name)) {
|
|
return address_to_str(scope, addr);
|
|
}
|
|
|
|
len = at->addr_name_res_len() + at->addr_str_len(addr) + 4; /* For format of %s (%s) */
|
|
|
|
str=(gchar *)wmem_alloc(scope, len);
|
|
address_with_resolution_to_str_buf(addr, str, len);
|
|
return str;
|
|
}
|
|
|
|
|
|
const char* address_type_column_filter_string(const address* addr, gboolean src)
|
|
{
|
|
address_type_t *at;
|
|
|
|
ADDR_TYPE_LOOKUP(addr->type, at);
|
|
|
|
if ((at == NULL) || (at->addr_col_filter == NULL))
|
|
{
|
|
return "";
|
|
}
|
|
|
|
return at->addr_col_filter(addr, src);
|
|
}
|
|
|
|
gchar*
|
|
tvb_address_to_str(wmem_allocator_t *scope, tvbuff_t *tvb, int type, const gint offset)
|
|
{
|
|
address addr;
|
|
address_type_t *at;
|
|
|
|
ADDR_TYPE_LOOKUP(type, at);
|
|
|
|
if (at == NULL)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
/* The address type must have a fixed length to use this function */
|
|
/* For variable length fields, use tvb_address_var_to_str() */
|
|
if (at->addr_fixed_len == NULL)
|
|
{
|
|
ws_assert_not_reached();
|
|
return NULL;
|
|
}
|
|
|
|
set_address_tvb(&addr, type, at->addr_fixed_len(), tvb, offset);
|
|
|
|
return address_to_str(scope, &addr);
|
|
}
|
|
|
|
gchar* tvb_address_var_to_str(wmem_allocator_t *scope, tvbuff_t *tvb, address_type type, const gint offset, int length)
|
|
{
|
|
address addr;
|
|
|
|
set_address_tvb(&addr, type, length, tvb, offset);
|
|
|
|
return address_to_str(scope, &addr);
|
|
}
|
|
|
|
gchar*
|
|
tvb_address_with_resolution_to_str(wmem_allocator_t *scope, tvbuff_t *tvb, int type, const gint offset)
|
|
{
|
|
address addr;
|
|
address_type_t *at;
|
|
|
|
ADDR_TYPE_LOOKUP(type, at);
|
|
|
|
if (at == NULL)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
/* The address type must have a fixed length to use this function */
|
|
/* For variable length fields, use tvb_address_var_with_resolution_to_str() */
|
|
if (at->addr_fixed_len == NULL)
|
|
{
|
|
ws_assert_not_reached();
|
|
return NULL;
|
|
}
|
|
|
|
set_address_tvb(&addr, type, at->addr_fixed_len(), tvb, offset);
|
|
|
|
return address_with_resolution_to_str(scope, &addr);
|
|
}
|
|
|
|
|
|
/*
|
|
* Editor modelines - https://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:
|
|
*/
|