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// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) B.A.T.M.A.N. contributors:
*
* Linus Lüssing <linus.luessing@c0d3.blue>
*
* 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 "batadv_packet_compat.h"
#include "batman_adv.h"
#include "bat-hosts.h"
#include "debug.h"
#include "functions.h"
#include "main.h"
#include "netlink.h"
static const int bla_claim_mandatory[] = {
BATADV_ATTR_BLA_ADDRESS,
BATADV_ATTR_BLA_VID,
BATADV_ATTR_BLA_BACKBONE,
BATADV_ATTR_BLA_CRC,
};
static int bla_claim_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;
uint16_t backbone_crc;
uint8_t *backbone;
uint8_t *client;
uint16_t vid;
char c = ' ';
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_BLA_CLAIM)
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, bla_claim_mandatory,
ARRAY_SIZE(bla_claim_mandatory))) {
fputs("Missing attributes from kernel\n", stderr);
exit(1);
}
if (attrs[BATADV_ATTR_BLA_OWN])
c = '*';
client = nla_data(attrs[BATADV_ATTR_BLA_ADDRESS]);
vid = nla_get_u16(attrs[BATADV_ATTR_BLA_VID]);
backbone = nla_data(attrs[BATADV_ATTR_BLA_BACKBONE]);
backbone_crc = nla_get_u16(attrs[BATADV_ATTR_BLA_CRC]);
bat_host = bat_hosts_find_by_mac((char *)client);
if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host)
printf("%02x:%02x:%02x:%02x:%02x:%02x ",
client[0], client[1], client[2],
client[3], client[4], client[5]);
else
printf("%17s ", bat_host->name);
printf("on %5d by ", BATADV_PRINT_VID(vid));
bat_host = bat_hosts_find_by_mac((char *)backbone);
if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host)
printf("%02x:%02x:%02x:%02x:%02x:%02x ",
backbone[0], backbone[1], backbone[2],
backbone[3], backbone[4], backbone[5]);
else
printf("%17s ", bat_host->name);
printf("[%c] (0x%04x)\n", c, backbone_crc);
return NL_OK;
}
static int netlink_print_bla_claim(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 Originator [o] (CRC )\n",
BATADV_CMD_GET_BLA_CLAIM,
bla_claim_callback);
}
static struct debug_table_data batctl_debug_table_claimtable = {
.netlink_fn = netlink_print_bla_claim,
};
COMMAND_NAMED(DEBUGTABLE, claimtable, "cl", handle_debug_table,
COMMAND_FLAG_MESH_IFACE | COMMAND_FLAG_NETLINK,
&batctl_debug_table_claimtable, "");
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