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/* capture_ifinfo.h
* Definitions for routines to get information about capture interfaces
*
* $Id$
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __CAPTURE_IFINFO_H__
#define __CAPTURE_IFINFO_H__
/*
* The list of interfaces returned by "get_interface_list()" is
* a list of these structures.
*/
typedef struct {
char *name; /* e.g. "eth0" */
char *description; /* from OS, e.g. "Local Area Connection" or NULL */
GSList *addrs; /* containing address values of if_addr_t */
gboolean loopback; /* TRUE if loopback, FALSE otherwise */
} if_info_t;
/*
* An address in the "addrs" list.
*/
typedef enum {
IF_AT_IPv4,
IF_AT_IPv6
} if_address_type;
typedef struct {
if_address_type ifat_type;
union {
guint32 ip4_addr; /* 4 byte IP V4 address, or */
guint8 ip6_addr[16];/* 16 byte IP V6 address */
} addr;
} if_addr_t;
/**
* Fetch the interface list from a child process.
*/
extern GList *capture_interface_list(int *err, char **err_str);
/* Error values from "get_interface_list()/capture_interface_list()". */
#define CANT_GET_INTERFACE_LIST 1 /* error getting list */
#define NO_INTERFACES_FOUND 2 /* list is empty */
void free_interface_list(GList *if_list);
/*
* "get_if_capabilities()" and "capture_if_capabilities()" return a pointer
* to an allocated instance of this structure. "free_if_capabilities()"
* frees the returned instance.
*/
typedef struct {
gboolean can_set_rfmon; /* TRUE if can be put into monitor mode */
GList *data_link_types; /* GList of data_link_info_t's */
} if_capabilities_t;
/*
* Information about data link types.
*/
typedef struct {
int dlt; /* e.g. DLT_EN10MB (which is 1) */
char *name; /* e.g. "EN10MB" or "DLT 1" */
char *description; /* descriptive name from wiretap e.g. "Ethernet", NULL if unknown */
} data_link_info_t;
/**
* Fetch the linktype list for the specified interface from a child process.
*/
extern if_capabilities_t *
capture_get_if_capabilities(const char *devname, gboolean monitor_mode,
char **err_str);
void free_if_capabilities(if_capabilities_t *caps);
#endif /* __CAPTURE_IFINFO_H__ */
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