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// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) B.A.T.M.A.N. contributors:
*
* Andrew Lunn <andrew@lunn.ch>
* Sven Eckelmann <sven@narfation.org>
*
* License-Filename: LICENSES/preferred/GPL-2.0
*/
#include <netinet/if_ether.h>
#include <netlink/netlink.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/ctrl.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include "batman_adv.h"
#include "bat-hosts.h"
#include "debug.h"
#include "functions.h"
#include "main.h"
#include "netlink.h"
static const int translocal_mandatory[] = {
BATADV_ATTR_TT_ADDRESS,
BATADV_ATTR_TT_VID,
BATADV_ATTR_TT_CRC32,
BATADV_ATTR_TT_FLAGS,
};
static int translocal_callback(struct nl_msg *msg, void *arg)
{
struct nlattr *attrs[BATADV_ATTR_MAX + 1];
struct nlmsghdr *nlh = nlmsg_hdr(msg);
struct print_opts *opts = arg;
struct bat_host *bat_host;
struct genlmsghdr *ghdr;
int last_seen_msecs = 0;
int last_seen_secs = 0;
uint32_t crc32;
uint32_t flags;
uint8_t *addr;
int16_t vid;
char r;
char p;
char n;
char x;
char w;
char i;
if (!genlmsg_valid_hdr(nlh, 0)) {
fputs("Received invalid data from kernel.\n", stderr);
exit(1);
}
ghdr = nlmsg_data(nlh);
if (ghdr->cmd != BATADV_CMD_GET_TRANSTABLE_LOCAL)
return NL_OK;
if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0),
genlmsg_len(ghdr), batadv_netlink_policy)) {
fputs("Received invalid data from kernel.\n", stderr);
exit(1);
}
if (missing_mandatory_attrs(attrs, translocal_mandatory,
ARRAY_SIZE(translocal_mandatory))) {
fputs("Missing attributes from kernel\n", stderr);
exit(1);
}
addr = nla_data(attrs[BATADV_ATTR_TT_ADDRESS]);
vid = nla_get_u16(attrs[BATADV_ATTR_TT_VID]);
crc32 = nla_get_u32(attrs[BATADV_ATTR_TT_CRC32]);
flags = nla_get_u32(attrs[BATADV_ATTR_TT_FLAGS]);
last_seen_msecs = 0;
last_seen_secs = 0;
if (opts->read_opt & MULTICAST_ONLY && !(addr[0] & 0x01))
return NL_OK;
if (opts->read_opt & UNICAST_ONLY && (addr[0] & 0x01))
return NL_OK;
r = '.', p = '.', n = '.', x = '.', w = '.', i = '.';
if (flags & BATADV_TT_CLIENT_ROAM)
r = 'R';
if (flags & BATADV_TT_CLIENT_NEW)
n = 'N';
if (flags & BATADV_TT_CLIENT_PENDING)
x = 'X';
if (flags & BATADV_TT_CLIENT_WIFI)
w = 'W';
if (flags & BATADV_TT_CLIENT_ISOLA)
i = 'I';
if (flags & BATADV_TT_CLIENT_NOPURGE)
p = 'P';
if (attrs[BATADV_ATTR_LAST_SEEN_MSECS]) {
last_seen_msecs = nla_get_u32(attrs[BATADV_ATTR_LAST_SEEN_MSECS]);
last_seen_secs = last_seen_msecs / 1000;
last_seen_msecs = last_seen_msecs % 1000;
}
bat_host = bat_hosts_find_by_mac((char *)addr);
if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host)
printf("%02x:%02x:%02x:%02x:%02x:%02x ",
addr[0], addr[1], addr[2],
addr[3], addr[4], addr[5]);
else
printf("%17s ", bat_host->name);
printf("%4i [%c%c%c%c%c%c] %3u.%03u (0x%.8x)\n",
BATADV_PRINT_VID(vid), r, p, n, x, w, i,
last_seen_secs, last_seen_msecs,
crc32);
return NL_OK;
}
static int netlink_print_translocal(struct state *state, char *orig_iface,
int read_opts, float orig_timeout,
float watch_interval)
{
return netlink_print_common(state, orig_iface, read_opts,
orig_timeout, watch_interval,
"Client VID Flags Last seen (CRC )\n",
BATADV_CMD_GET_TRANSTABLE_LOCAL,
translocal_callback);
}
static struct debug_table_data batctl_debug_table_translocal = {
.netlink_fn = netlink_print_translocal,
.option_unicast_only = 1,
.option_multicast_only = 1,
};
COMMAND_NAMED(DEBUGTABLE, translocal, "tl", handle_debug_table,
COMMAND_FLAG_MESH_IFACE | COMMAND_FLAG_NETLINK,
&batctl_debug_table_translocal, "");
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