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wireshark/epan/address_types.c

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/* address_types.c
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h> /* needed for <arpa/inet.h> on some platforms */
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h> /* needed to define AF_ values on UNIX */
#endif
#include <string.h> /* for memcmp */
#include "packet.h"
#include "address_types.h"
#include "to_str.h"
#include "to_str-int.h"
#include "addr_resolv.h"
#include "wsutil/pint.h"
#include "wsutil/str_util.h"
#include "wsutil/inet_v6defs.h"
#include <epan/dissectors/packet-mtp3.h>
struct _address_type_t {
int addr_type; /* From address_type enumeration or registered value */
const char *name;
const char *pretty_name;
AddrValueToString addr_to_str;
AddrValueToStringLen addr_str_len;
AddrColFilterString addr_col_filter;
AddrFixedLen addr_fixed_len;
AddrNameResolutionToString addr_name_res_str;
AddrNameResolutionLen addr_name_res_len;
/* XXX - Some sort of compare functions (like ftype)? ***/
};
#define MAX_DISSECTOR_ADDR_TYPE 20
#define MAX_ADDR_TYPE_VALUE (AT_END_OF_LIST+MAX_DISSECTOR_ADDR_TYPE)
static int num_dissector_addr_type;
static address_type_t dissector_type_addresses[MAX_DISSECTOR_ADDR_TYPE];
/* Keep track of address_type_t's via their id number */
static address_type_t* type_list[MAX_ADDR_TYPE_VALUE];
/*
* If a user _does_ pass in a too-small buffer, this is probably
* going to be too long to fit. However, even a partial string
* starting with "[Buf" should provide enough of a clue to be
* useful.
*/
#define BUF_TOO_SMALL_ERR "[Buffer too small]"
static void address_type_register(int addr_type, address_type_t *at)
{
/* Check input */
g_assert(addr_type < MAX_ADDR_TYPE_VALUE);
g_assert(addr_type == at->addr_type);
/* Don't re-register. */
g_assert(type_list[addr_type] == NULL);
/* Sanity check */
DISSECTOR_ASSERT(at->name);
DISSECTOR_ASSERT(at->pretty_name);
DISSECTOR_ASSERT(at->addr_to_str);
DISSECTOR_ASSERT(at->addr_str_len);
DISSECTOR_ASSERT(((at->addr_name_res_str != NULL) && (at->addr_name_res_len != NULL)) ||
((at->addr_name_res_str == NULL) && (at->addr_name_res_len == NULL)));
type_list[addr_type] = at;
}
int address_type_dissector_register(const char* name, const char* pretty_name,
AddrValueToString to_str_func, AddrValueToStringLen str_len_func,
AddrColFilterString col_filter_str_func, AddrFixedLen fixed_len_func,
AddrNameResolutionToString name_res_str_func, AddrNameResolutionLen name_res_len_func)
{
int addr_type;
/* Ensure valid data/functions for required fields */
DISSECTOR_ASSERT(name);
DISSECTOR_ASSERT(pretty_name);
DISSECTOR_ASSERT(to_str_func);
DISSECTOR_ASSERT(str_len_func);
/* Either have both or neither */
DISSECTOR_ASSERT(((name_res_str_func != NULL) && (name_res_len_func != NULL)) ||
((name_res_str_func == NULL) && (name_res_len_func == NULL)));
/* This shouldn't happen, so flag it for fixing */
DISSECTOR_ASSERT(num_dissector_addr_type < MAX_DISSECTOR_ADDR_TYPE);
addr_type = AT_END_OF_LIST+num_dissector_addr_type;
dissector_type_addresses[num_dissector_addr_type].addr_type = addr_type;
dissector_type_addresses[num_dissector_addr_type].name = name;
dissector_type_addresses[num_dissector_addr_type].pretty_name = pretty_name;
dissector_type_addresses[num_dissector_addr_type].addr_to_str = to_str_func;
dissector_type_addresses[num_dissector_addr_type].addr_str_len = str_len_func;
dissector_type_addresses[num_dissector_addr_type].addr_col_filter = col_filter_str_func;
dissector_type_addresses[num_dissector_addr_type].addr_fixed_len = fixed_len_func;
dissector_type_addresses[num_dissector_addr_type].addr_name_res_str = name_res_str_func;
dissector_type_addresses[num_dissector_addr_type].addr_name_res_len = name_res_len_func;
type_list[addr_type] = &dissector_type_addresses[num_dissector_addr_type];
num_dissector_addr_type++;
return addr_type;
}
/******************************************************************************
* AT_NONE
******************************************************************************/
int none_addr_to_str(const address* addr _U_, gchar *buf, int buf_len _U_)
{
buf[0] = '\0';
return none_addr_str_len(addr);
}
int none_addr_str_len(const address* addr _U_)
{
return 1; /* NULL character for empty string */
}
int none_addr_len(void)
{
return 0;
}
static int none_name_res_len(void)
{
return 5;
}
static const gchar* none_name_res_str(const address* addr _U_)
{
return "NONE";
}
/******************************************************************************
* AT_ETHER
******************************************************************************/
int ether_to_str(const address* addr, gchar *buf, int buf_len _U_)
{
bytes_to_hexstr_punct(buf, (const guint8*)addr->data, 6, ':');
buf[17] = '\0';
return ether_str_len(addr);
}
int ether_str_len(const address* addr _U_)
{
return 18;
}
static const char* ether_col_filter_str(const address* addr _U_, gboolean is_src)
{
if (is_src)
return "eth.src";
return "eth.dst";
}
int ether_len(void)
{
return 6;
}
const gchar* ether_name_resolution_str(const address* addr)
{
return get_ether_name((const guint8 *)addr->data);
}
int ether_name_resolution_len(void)
{
return MAX_ADDR_STR_LEN; /* XXX - This can be lower */
}
/******************************************************************************
* AT_IPv4
******************************************************************************/
static int ipv4_to_str(const address* addr, gchar *buf, int buf_len)
{
ip_to_str_buf((const guint8*)addr->data, buf, buf_len);
return (int)(strlen(buf)+1);
}
static int ipv4_str_len(const address* addr _U_)
{
return MAX_IP_STR_LEN;
}
static const char* ipv4_col_filter_str(const address* addr _U_, gboolean is_src)
{
if (is_src)
return "ip.src";
return "ip.dst";
}
static int ipv4_len(void)
{
return 4;
}
static const gchar* ipv4_name_res_str(const address* addr)
{
guint32 ip4_addr;
memcpy(&ip4_addr, addr->data, sizeof ip4_addr);
return get_hostname(ip4_addr);
}
static int ipv4_name_res_len(void)
{
return MAX_ADDR_STR_LEN; /* XXX - This can be lower */
}
/******************************************************************************
* AT_IPv6
******************************************************************************/
/* const char *
* inet_ntop6(src, dst, size)
* convert IPv6 binary address into presentation (printable) format
* author:
* Paul Vixie, 1996.
*/
static void
ip6_to_str_buf_len(const guchar* src, char *buf, int buf_len)
{
struct { int base, len; } best, cur;
guint words[8];
int i;
if (buf_len < MAX_IP6_STR_LEN) { /* buf_len < 40 */
g_strlcpy(buf, BUF_TOO_SMALL_ERR, buf_len); /* Let the unexpected value alert user */
return;
}
/*
* Preprocess:
* Copy the input (bytewise) array into a wordwise array.
* Find the longest run of 0x00's in src[] for :: shorthanding.
*/
for (i = 0; i < 16; i += 2) {
words[i / 2] = (src[i+1] << 0);
words[i / 2] |= (src[i] << 8);
}
best.base = -1; best.len = 0;
cur.base = -1; cur.len = 0;
for (i = 0; i < 8; i++) {
if (words[i] == 0) {
if (cur.base == -1) {
cur.base = i;
cur.len = 1;
} else
cur.len++;
} else {
if (cur.base != -1) {
if (best.base == -1 || cur.len > best.len)
best = cur;
cur.base = -1;
}
}
}
if (cur.base != -1) {
if (best.base == -1 || cur.len > best.len)
best = cur;
}
if (best.base != -1 && best.len < 2)
best.base = -1;
/* Is this address an encapsulated IPv4? */
/* XXX,
* Orginal code dated 1996 uses ::/96 as a valid IPv4-compatible addresses
* but since Feb 2006 ::/96 is deprecated one.
* Quoting wikipedia [0]:
* > The 96-bit zero-value prefix ::/96, originally known as IPv4-compatible
* > addresses, was mentioned in 1995[35] but first described in 1998.[41]
* > This class of addresses was used to represent IPv4 addresses within
* > an IPv6 transition technology. Such an IPv6 address has its first
* > (most significant) 96 bits set to zero, while its last 32 bits are the
* > IPv4 address that is represented.
* > In February 2006 the Internet Engineering Task Force (IETF) has deprecated
* > the use of IPv4-compatible addresses.[1] The only remaining use of this address
* > format is to represent an IPv4 address in a table or database with fixed size
* > members that must also be able to store an IPv6 address.
*
* If needed it can be fixed by changing next line:
* if (best.base == 0 && (best.len == 6 || (best.len == 5 && words[5] == 0xffff)))
* to:
* if (best.base == 0 && best.len == 5 && words[5] == 0xffff)
*
* [0] http://en.wikipedia.org/wiki/IPv6_address#Historical_notes
*/
if (best.base == 0 && (best.len == 6 || (best.len == 5 && words[5] == 0xffff)))
{
/* best.len == 6 -> ::IPv4; 5 -> ::ffff:IPv4 */
buf = g_stpcpy(buf, "::");
if (best.len == 5)
buf = g_stpcpy(buf, "ffff:");
ip_to_str_buf(src + 12, buf, MAX_IP_STR_LEN);
/* max: 2 + 5 + 16 == 23 bytes */
return;
}
/*
* Format the result.
*/
for (i = 0; i < 8; i++) {
/* Are we inside the best run of 0x00's? */
if (i == best.base) {
*buf++ = ':';
i += best.len;
/* Was it a trailing run of 0x00's? */
if (i == 8) {
*buf++ = ':';
break;
}
}
/* Are we following an initial run of 0x00s or any real hex? */
if (i != 0)
*buf++ = ':';
buf = word_to_hex_npad(buf, words[i]); /* max: 4B */
/* max: 8 * 4 + 7 == 39 bytes */
}
*buf = '\0'; /* 40 byte */
}
void
ip6_to_str_buf(const struct e_in6_addr *ad, gchar *buf)
{
ip6_to_str_buf_len((const guchar*)ad, buf, MAX_IP6_STR_LEN);
}
static int ipv6_to_str(const address* addr, gchar *buf, int buf_len)
{
ip6_to_str_buf_len((const guchar*)addr->data, buf, buf_len);
return (int)(strlen(buf)+1);
}
static int ipv6_str_len(const address* addr _U_)
{
return MAX_IP6_STR_LEN;
}
static const char* ipv6_col_filter_str(const address* addr _U_, gboolean is_src)
{
if (is_src)
return "ipv6.src";
return "ipv6.dst";
}
static int ipv6_len(void)
{
return 16;
}
static const gchar* ipv6_name_res_str(const address* addr)
{
struct e_in6_addr ip6_addr;
memcpy(&ip6_addr.bytes, addr->data, sizeof ip6_addr.bytes);
return get_hostname6(&ip6_addr);
}
static int ipv6_name_res_len(void)
{
return MAX_ADDR_STR_LEN; /* XXX - This can be lower */
}
/******************************************************************************
* AT_IPX
******************************************************************************/
static int ipx_to_str(const address* addr, gchar *buf, int buf_len _U_)
{
const guint8 *addrdata = (const guint8 *)addr->data;
gchar *bufp = buf;
bufp = bytes_to_hexstr(bufp, &addrdata[0], 4); /* 8 bytes */
*bufp++ = '.'; /*1 byte */
bufp = bytes_to_hexstr(bufp, &addrdata[4], 6); /* 12 bytes */
*bufp++ = '\0'; /* NULL terminate */
return (int)(bufp - buf);
}
static int ipx_str_len(const address* addr _U_)
{
return 22;
}
static int ipx_len(void)
{
return 10;
}
/******************************************************************************
* AT_VINES
* XXX - This functionality should really be in packet-vines.c as a dissector
* address type, but need to resolve "address type" as "field type"
******************************************************************************/
static int vines_to_str(const address* addr, gchar *buf, int buf_len _U_)
{
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_str_len(const address* addr _U_)
{
return 14;
}
static int vines_len(void)
{
return VINES_ADDR_LEN;
}
/******************************************************************************
* AT_FC
******************************************************************************/
static int fc_to_str(const address* addr, gchar *buf, int buf_len _U_)
{
gchar *bufp = buf;
bufp = bytes_to_hexstr_punct(bufp, (const guint8 *)addr->data, 3, '.');
*bufp++ = '\0'; /* NULL terminate */
return (int)(bufp - buf);
}
static int fc_str_len(const address* addr _U_)
{
return 9;
}
static int fc_len(void)
{
return 3;
}
/******************************************************************************
* AT_FCWWN
* XXX - Doubles as a "field type", should it be defined here?
******************************************************************************/
/* FC Network Header Network Address Authority Identifiers */
#define FC_NH_NAA_IEEE 1 /* IEEE 802.1a */
#define FC_NH_NAA_IEEE_E 2 /* IEEE Exteneded */
#define FC_NH_NAA_LOCAL 3
#define FC_NH_NAA_IP 4 /* 32-bit IP address */
#define FC_NH_NAA_IEEE_R 5 /* IEEE Registered */
#define FC_NH_NAA_IEEE_R_E 6 /* IEEE Registered Exteneded */
/* according to FC-PH 3 draft these are now reclaimed and reserved */
#define FC_NH_NAA_CCITT_INDV 12 /* CCITT 60 bit individual address */
#define FC_NH_NAA_CCITT_GRP 14 /* CCITT 60 bit group address */
static int fcwwn_str_len(const address* addr _U_)
{
return 24;
}
static int fcwwn_to_str(const address* addr, gchar *buf, int buf_len _U_)
{
const guint8 *addrp = (const guint8*)addr->data;
buf = bytes_to_hexstr_punct(buf, addrp, 8, ':'); /* 23 bytes */
*buf = '\0';
return fcwwn_str_len(addr);
}
static int fcwwn_len(void)
{
return FCWWN_ADDR_LEN;
}
static const gchar* fcwwn_name_res_str(const address* addr)
{
const guint8 *addrp = (const guint8*)addr->data;
int fmt;
guint8 oui[6];
fmt = (addrp[0] & 0xF0) >> 4;
switch (fmt) {
case FC_NH_NAA_IEEE:
case FC_NH_NAA_IEEE_E:
memcpy (oui, &addrp[2], 6);
return get_manuf_name(oui);
case FC_NH_NAA_IEEE_R:
oui[0] = ((addrp[0] & 0x0F) << 4) | ((addrp[1] & 0xF0) >> 4);
oui[1] = ((addrp[1] & 0x0F) << 4) | ((addrp[2] & 0xF0) >> 4);
oui[2] = ((addrp[2] & 0x0F) << 4) | ((addrp[3] & 0xF0) >> 4);
oui[3] = ((addrp[3] & 0x0F) << 4) | ((addrp[4] & 0xF0) >> 4);
oui[4] = ((addrp[4] & 0x0F) << 4) | ((addrp[5] & 0xF0) >> 4);
oui[5] = ((addrp[5] & 0x0F) << 4) | ((addrp[6] & 0xF0) >> 4);
return get_manuf_name(oui);
}
return "";
}
static int fcwwn_name_res_len(void)
{
return MAX_ADDR_STR_LEN; /* XXX - This can be lower */
}
/******************************************************************************
* AT_SS7PC
* XXX - This should really be a dissector address type as its address string
* is partially determined by a dissector preference.
******************************************************************************/
static int ss7pc_to_str(const address* addr, gchar *buf, int buf_len)
{
mtp3_addr_to_str_buf((const mtp3_addr_pc_t *)addr->data, buf, buf_len);
return (int)(strlen(buf)+1);
}
static int ss7pc_str_len(const address* addr _U_)
{
return 50;
}
/******************************************************************************
* AT_STRINGZ
******************************************************************************/
static int stringz_addr_to_str(const address* addr, gchar *buf, int buf_len)
{
g_strlcpy(buf, (const gchar *)addr->data, buf_len);
return (int)(strlen(buf)+1);
}
static int stringz_addr_str_len(const address* addr)
{
return addr->len+1;
}
/******************************************************************************
* AT_EUI64
******************************************************************************/
static int eui64_addr_to_str(const address* addr, gchar *buf, int buf_len _U_)
{
buf = bytes_to_hexstr_punct(buf, (const guint8 *)addr->data, 8, ':');
*buf = '\0'; /* NULL terminate */
return sizeof(buf) + 1;
}
static int eui64_str_len(const address* addr _U_)
{
return EUI64_STR_LEN;
}
static int eui64_len(void)
{
return 8;
}
/******************************************************************************
* AT_IB
******************************************************************************/
static int
ib_addr_to_str( const address *addr, gchar *buf, int buf_len){
if (addr->len >= 16) { /* GID is 128bits */
#define PREAMBLE_STR_LEN ((int)(sizeof("GID: ") - 1))
g_strlcpy(buf, "GID: ", buf_len);
if (buf_len < PREAMBLE_STR_LEN ||
inet_ntop(AF_INET6, addr->data, buf + PREAMBLE_STR_LEN,
buf_len - PREAMBLE_STR_LEN) == NULL ) /* Returns NULL if no space and does not touch buf */
g_strlcpy(buf, BUF_TOO_SMALL_ERR, buf_len); /* Let the unexpected value alert user */
} else { /* this is a LID (16 bits) */
guint16 lid_number;
memcpy((void *)&lid_number, addr->data, sizeof lid_number);
g_snprintf(buf,buf_len,"LID: %u",lid_number);
}
return sizeof(buf) + 1;
}
static int ib_str_len(const address* addr _U_)
{
return MAX_ADDR_STR_LEN; /* XXX - This is overkill */
}
/******************************************************************************
* AT_USB
* XXX - This functionality should really be in packet-usb.c as a dissector
* address type, but currently need support of AT_USB in conversation_table.c
******************************************************************************/
static int usb_addr_to_str(const address* addr, gchar *buf, int buf_len _U_)
{
const guint8 *addrp = (const guint8 *)addr->data;
if(pletoh32(&addrp[0])==0xffffffff){
g_strlcpy(buf, "host", buf_len);
} else {
g_snprintf(buf, buf_len, "%d.%d.%d", pletoh16(&addrp[8]),
pletoh32(&addrp[0]), pletoh32(&addrp[4]));
}
return (int)(strlen(buf)+1);
}
static int usb_addr_str_len(const address* addr _U_)
{
return 50;
}
/******************************************************************************
* AT_AX25
******************************************************************************/
static int ax25_addr_to_str(const address* addr, gchar *buf, int buf_len _U_)
{
const guint8 *addrdata = (const guint8 *)addr->data;
gchar *bufp = buf;
*bufp++ = printable_char_or_period(addrdata[0] >> 1);
*bufp++ = printable_char_or_period(addrdata[1] >> 1);
*bufp++ = printable_char_or_period(addrdata[2] >> 1);
*bufp++ = printable_char_or_period(addrdata[3] >> 1);
*bufp++ = printable_char_or_period(addrdata[4] >> 1);
*bufp++ = printable_char_or_period(addrdata[5] >> 1);
*bufp++ = '-';
bufp = uint_to_str_back(bufp, (addrdata[6] >> 1) & 0x0f);
*bufp++ = '\0'; /* NULL terminate */
return (int)(bufp - buf);
}
static int ax25_addr_str_len(const address* addr _U_)
{
return 21; /* Leaves extra space (10 bytes) just for uint_to_str_back() */
}
static const char* ax25_col_filter_str(const address* addr _U_, gboolean is_src)
{
if (is_src)
return "ax25.src";
return "ax25.dst";
}
static int ax25_len(void)
{
return AX25_ADDR_LEN;
}
/******************************************************************************
* 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_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 */
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 */
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 */
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_col_filter */
ipx_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_to_str, /* addr_to_str */
vines_str_len, /* addr_str_len */
NULL, /* addr_col_filter */
vines_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_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_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 ss7pc_address = {
AT_SS7PC, /* addr_type */
"AT_SS7PC", /* name */
"SS7 Point Code", /* pretty_name */
ss7pc_to_str, /* addr_to_str */
ss7pc_str_len, /* addr_str_len */
NULL, /* addr_col_filter */
NULL, /* addr_fixed_len */
NULL, /* addr_name_res_str */
NULL, /* 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_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_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_col_filter */
NULL, /* addr_fixed_len */
NULL, /* addr_name_res_str */
NULL, /* addr_name_res_len */
};
static address_type_t usb_address = {
AT_USB, /* addr_type */
"AT_USB", /* name */
"USB Address", /* pretty_name */
usb_addr_to_str, /* addr_to_str */
usb_addr_str_len, /* addr_str_len */
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 */
ax25_col_filter_str, /* addr_col_filter */
ax25_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*sizeof(address_type_t*));
address_type_register(AT_NONE, &none_address );
address_type_register(AT_ETHER, &ether_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_VINES, &vines_address );
address_type_register(AT_FC, &fc_address );
address_type_register(AT_FCWWN, &fcwwn_address );
address_type_register(AT_SS7PC, &ss7pc_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_USB, &usb_address );
address_type_register(AT_AX25, &ax25_address );
}
/* Given an address type id, return an address_type_t* */
#define ADDR_TYPE_LOOKUP(addr_type, result) \
/* Check input */ \
g_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);
}
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;
gboolean empty;
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 */
pos = g_strlcpy(buf, at->addr_name_res_str(addr), buf_len);
/* Don't wrap "emptyness" in parentheses */
if (addr->type == AT_NONE)
return;
/* Make sure there is enough room for the address string wrapped in parentheses */
if ((int)(pos + 4 + at->addr_str_len(addr)) >= buf_len)
return;
empty = (pos <= 1) ? TRUE : FALSE;
if (!empty)
{
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' */
if (!empty)
{
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)
{
g_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)
{
g_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 - 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:
*/
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