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gluon-mesh-batman-adv: further cleanup of respondd provider

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- Split into multiple files
- Avoid alloca()
This commit is contained in:
Matthias Schiffer 2019-11-23 22:31:42 +01:00
parent 0f1fa243f7
commit ecc29e0b09
No known key found for this signature in database
GPG Key ID: 16EF3F64CB201D9C
6 changed files with 755 additions and 614 deletions
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7
package/gluon-mesh-batman-adv/src/Makefile
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@ -31,5 +31,8 @@ endif
CFLAGS += $(LIBBATADV_CFLAGS)
LDLIBS += $(LIBBATADV_LDLIBS)
respondd.so: respondd.c
$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -shared -fPIC -D_GNU_SOURCE -o $@ $^ $(LDLIBS) -lgluonutil -luci
SOURCES = respondd.c respondd-nodeinfo.c respondd-statistics.c respondd-neighbours.c
respondd.so: $(SOURCES) respondd-common.h
$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -shared -fPIC -fvisibility=hidden -D_GNU_SOURCE -o $@ $(SOURCES) $(LDLIBS) -lgluonutil

30
package/gluon-mesh-batman-adv/src/respondd-common.h Normal file
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@ -0,0 +1,30 @@
/*
Copyright (c) 2016-2019, Matthias Schiffer <mschiffer@universe-factory.net>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
struct json_object * respondd_provider_nodeinfo(void);
struct json_object * respondd_provider_statistics(void);
struct json_object * respondd_provider_neighbours(void);

176
package/gluon-mesh-batman-adv/src/respondd-neighbours.c Normal file
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@ -0,0 +1,176 @@
/*
Copyright (c) 2016-2019, Matthias Schiffer <mschiffer@universe-factory.net>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "respondd-common.h"
#include <batadv-genl.h>
#include <libgluonutil.h>
#include <json-c/json.h>
#include <netlink/netlink.h>
#include <netlink/genl/genl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <net/if.h>
struct neigh_netlink_opts {
struct json_object *interfaces;
struct batadv_nlquery_opts query_opts;
};
static struct json_object * ifnames2addrs(struct json_object *interfaces) {
struct json_object *ret = json_object_new_object();
json_object_object_foreach(interfaces, ifname, interface) {
char *ifaddr = gluonutil_get_interface_address(ifname);
if (!ifaddr)
continue;
struct json_object *obj = json_object_new_object();
json_object_object_add(obj, "neighbours", json_object_get(interface));
json_object_object_add(ret, ifaddr, obj);
free(ifaddr);
}
json_object_put(interfaces);
return ret;
}
static const enum batadv_nl_attrs parse_orig_list_mandatory[] = {
BATADV_ATTR_ORIG_ADDRESS,
BATADV_ATTR_NEIGH_ADDRESS,
BATADV_ATTR_TQ,
BATADV_ATTR_HARD_IFINDEX,
BATADV_ATTR_LAST_SEEN_MSECS,
};
static int parse_orig_list_netlink_cb(struct nl_msg *msg, void *arg)
{
struct nlattr *attrs[BATADV_ATTR_MAX+1];
struct nlmsghdr *nlh = nlmsg_hdr(msg);
struct batadv_nlquery_opts *query_opts = arg;
struct genlmsghdr *ghdr;
uint8_t *orig;
uint8_t *dest;
uint8_t tq;
uint32_t hardif;
uint32_t lastseen;
char ifname_buf[IF_NAMESIZE], *ifname;
struct neigh_netlink_opts *opts;
char mac1[18];
opts = batadv_container_of(query_opts, struct neigh_netlink_opts,
query_opts);
if (!genlmsg_valid_hdr(nlh, 0))
return NL_OK;
ghdr = nlmsg_data(nlh);
if (ghdr->cmd != BATADV_CMD_GET_ORIGINATORS)
return NL_OK;
if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0),
genlmsg_len(ghdr), batadv_genl_policy))
return NL_OK;
if (batadv_genl_missing_attrs(attrs, parse_orig_list_mandatory,
BATADV_ARRAY_SIZE(parse_orig_list_mandatory)))
return NL_OK;
orig = nla_data(attrs[BATADV_ATTR_ORIG_ADDRESS]);
dest = nla_data(attrs[BATADV_ATTR_NEIGH_ADDRESS]);
tq = nla_get_u8(attrs[BATADV_ATTR_TQ]);
hardif = nla_get_u32(attrs[BATADV_ATTR_HARD_IFINDEX]);
lastseen = nla_get_u32(attrs[BATADV_ATTR_LAST_SEEN_MSECS]);
if (memcmp(orig, dest, 6) != 0)
return NL_OK;
ifname = if_indextoname(hardif, ifname_buf);
if (!ifname)
return NL_OK;
sprintf(mac1, "%02x:%02x:%02x:%02x:%02x:%02x",
orig[0], orig[1], orig[2], orig[3], orig[4], orig[5]);
struct json_object *obj = json_object_new_object();
if (!obj)
return NL_OK;
struct json_object *interface;
if (!json_object_object_get_ex(opts->interfaces, ifname, &interface)) {
interface = json_object_new_object();
json_object_object_add(opts->interfaces, ifname, interface);
}
json_object_object_add(obj, "tq", json_object_new_int(tq));
json_object_object_add(obj, "lastseen", json_object_new_double(lastseen / 1000.));
json_object_object_add(obj, "best", json_object_new_boolean(!!attrs[BATADV_ATTR_FLAG_BEST]));
json_object_object_add(interface, mac1, obj);
return NL_OK;
}
static struct json_object * get_batadv(void) {
struct neigh_netlink_opts opts = {
.query_opts = {
.err = 0,
},
};
int ret;
opts.interfaces = json_object_new_object();
if (!opts.interfaces)
return NULL;
ret = batadv_genl_query("bat0", BATADV_CMD_GET_ORIGINATORS,
parse_orig_list_netlink_cb, NLM_F_DUMP,
&opts.query_opts);
if (ret < 0) {
json_object_put(opts.interfaces);
return NULL;
}
return ifnames2addrs(opts.interfaces);
}
struct json_object * respondd_provider_neighbours(void) {
struct json_object *ret = json_object_new_object();
struct json_object *batadv = get_batadv();
if (batadv)
json_object_object_add(ret, "batadv", batadv);
return ret;
}

219
package/gluon-mesh-batman-adv/src/respondd-nodeinfo.c Normal file
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@ -0,0 +1,219 @@
/*
Copyright (c) 2016-2019, Matthias Schiffer <mschiffer@universe-factory.net>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "respondd-common.h"
#include <libgluonutil.h>
#include <json-c/json.h>
#include <netlink/netlink.h>
#include <netlink/msg.h>
#include <glob.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <netinet/in.h>
#include <linux/if_addr.h>
#include <linux/rtnetlink.h>
struct ip_address_information {
unsigned int ifindex;
struct json_object *addresses;
};
static int get_addresses_cb(struct nl_msg *msg, void *arg) {
struct ip_address_information *info = (struct ip_address_information*) arg;
struct nlmsghdr *nlh = nlmsg_hdr(msg);
struct ifaddrmsg *msg_content = NLMSG_DATA(nlh);
int remaining = nlh->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifaddrmsg));
struct rtattr *hdr;
for (hdr = IFA_RTA(msg_content); RTA_OK(hdr, remaining); hdr = RTA_NEXT(hdr, remaining)) {
char addr_str_buf[INET6_ADDRSTRLEN];
/* We are only interested in IP-addresses of br-client */
if (hdr->rta_type != IFA_ADDRESS ||
msg_content->ifa_index != info->ifindex ||
msg_content->ifa_flags & (IFA_F_TENTATIVE|IFA_F_DEPRECATED)) {
continue;
}
if (inet_ntop(AF_INET6, (struct in6_addr *) RTA_DATA(hdr), addr_str_buf, INET6_ADDRSTRLEN)) {
json_object_array_add(info->addresses, json_object_new_string(addr_str_buf));
}
}
return NL_OK;
}
static struct json_object *get_addresses(void) {
struct ip_address_information info = {
.ifindex = if_nametoindex("br-client"),
.addresses = json_object_new_array(),
};
int err;
/* Open socket */
struct nl_sock *socket = nl_socket_alloc();
if (!socket) {
return info.addresses;
}
err = nl_connect(socket, NETLINK_ROUTE);
if (err < 0) {
goto out_free;
}
/* Send message */
struct ifaddrmsg rt_hdr = { .ifa_family = AF_INET6, };
err = nl_send_simple(socket, RTM_GETADDR, NLM_F_REQUEST | NLM_F_ROOT, &rt_hdr, sizeof(struct ifaddrmsg));
if (err < 0) {
goto out_free;
}
/* Retrieve answer. Message is handled by get_addresses_cb */
nl_socket_modify_cb(socket, NL_CB_VALID, NL_CB_CUSTOM, get_addresses_cb, &info);
nl_recvmsgs_default(socket);
out_free:
nl_socket_free(socket);
return info.addresses;
}
static void add_if_not_empty(struct json_object *obj, const char *key, struct json_object *val) {
if (json_object_array_length(val))
json_object_object_add(obj, key, val);
else
json_object_put(val);
}
static bool interface_file_exists(const char *ifname, const char *name) {
const char *format = "/sys/class/net/%s/%s";
char path[strlen(format) + strlen(ifname) + strlen(name)];
snprintf(path, sizeof(path), format, ifname, name);
return !access(path, F_OK);
}
static void mesh_add_subif(const char *ifname, struct json_object *wireless,
struct json_object *tunnel, struct json_object *other) {
struct json_object *address = gluonutil_wrap_and_free_string(gluonutil_get_interface_address(ifname));
char lowername[IFNAMSIZ];
strncpy(lowername, ifname, sizeof(lowername)-1);
lowername[sizeof(lowername)-1] = 0;
const char *format = "/sys/class/net/%s/lower_*";
char pattern[strlen(format) + IFNAMSIZ];
/* In case of VLAN and bridge interfaces, we want the lower interface
* to determine the interface type (but not for the interface address) */
while (true) {
snprintf(pattern, sizeof(pattern), format, lowername);
size_t pattern_len = strlen(pattern);
glob_t lower;
if (glob(pattern, GLOB_NOSORT, NULL, &lower))
break;
strncpy(lowername, lower.gl_pathv[0] + pattern_len - 1, sizeof(lowername)-1);
globfree(&lower);
}
if (interface_file_exists(lowername, "wireless"))
json_object_array_add(wireless, address);
else if (interface_file_exists(lowername, "tun_flags"))
json_object_array_add(tunnel, address);
else
json_object_array_add(other, address);
}
static struct json_object * get_mesh_subifs(const char *ifname) {
struct json_object *wireless = json_object_new_array();
struct json_object *tunnel = json_object_new_array();
struct json_object *other = json_object_new_array();
const char *format = "/sys/class/net/%s/lower_*";
char pattern[strlen(format) + strlen(ifname) - 1];
snprintf(pattern, sizeof(pattern), format, ifname);
size_t pattern_len = strlen(pattern);
glob_t lower;
if (!glob(pattern, GLOB_NOSORT, NULL, &lower)) {
size_t i;
for (i = 0; i < lower.gl_pathc; i++) {
mesh_add_subif(lower.gl_pathv[i] + pattern_len - 1,
wireless, tunnel, other);
}
globfree(&lower);
}
struct json_object *ret = json_object_new_object();
add_if_not_empty(ret, "wireless", wireless);
add_if_not_empty(ret, "tunnel", tunnel);
add_if_not_empty(ret, "other", other);
return ret;
}
static struct json_object * get_mesh(void) {
struct json_object *ret = json_object_new_object();
struct json_object *bat0_interfaces = json_object_new_object();
json_object_object_add(bat0_interfaces, "interfaces", get_mesh_subifs("bat0"));
json_object_object_add(ret, "bat0", bat0_interfaces);
return ret;
}
struct json_object * respondd_provider_nodeinfo(void) {
struct json_object *ret = json_object_new_object();
struct json_object *network = json_object_new_object();
json_object_object_add(network, "addresses", get_addresses());
json_object_object_add(network, "mesh", get_mesh());
json_object_object_add(ret, "network", network);
struct json_object *software = json_object_new_object();
struct json_object *software_batman_adv = json_object_new_object();
json_object_object_add(software_batman_adv, "version",
gluonutil_wrap_and_free_string(gluonutil_read_line("/sys/module/batman_adv/version")));
json_object_object_add(software_batman_adv, "compat", json_object_new_int(15));
json_object_object_add(software, "batman-adv", software_batman_adv);
json_object_object_add(ret, "software", software);
return ret;
}

322
package/gluon-mesh-batman-adv/src/respondd-statistics.c Normal file
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@ -0,0 +1,322 @@
/*
Copyright (c) 2016-2019, Matthias Schiffer <mschiffer@universe-factory.net>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "respondd-common.h"
#include <batadv-genl.h>
#include <json-c/json.h>
#include <netlink/netlink.h>
#include <netlink/genl/genl.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <net/if.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <linux/ethtool.h>
#include <linux/sockios.h>
#define MAX_INACTIVITY 60000
struct clients_netlink_opts {
size_t clients;
struct batadv_nlquery_opts query_opts;
};
struct gw_netlink_opts {
struct json_object *obj;
struct batadv_nlquery_opts query_opts;
};
static const enum batadv_nl_attrs gateways_mandatory[] = {
BATADV_ATTR_ORIG_ADDRESS,
BATADV_ATTR_ROUTER,
};
static int parse_gw_list_netlink_cb(struct nl_msg *msg, void *arg)
{
struct nlattr *attrs[BATADV_ATTR_MAX+1];
struct nlmsghdr *nlh = nlmsg_hdr(msg);
struct batadv_nlquery_opts *query_opts = arg;
struct genlmsghdr *ghdr;
uint8_t *orig;
uint8_t *router;
struct gw_netlink_opts *opts;
char addr[18];
opts = batadv_container_of(query_opts, struct gw_netlink_opts,
query_opts);
if (!genlmsg_valid_hdr(nlh, 0))
return NL_OK;
ghdr = nlmsg_data(nlh);
if (ghdr->cmd != BATADV_CMD_GET_GATEWAYS)
return NL_OK;
if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0),
genlmsg_len(ghdr), batadv_genl_policy))
return NL_OK;
if (batadv_genl_missing_attrs(attrs, gateways_mandatory,
BATADV_ARRAY_SIZE(gateways_mandatory)))
return NL_OK;
if (!attrs[BATADV_ATTR_FLAG_BEST])
return NL_OK;
orig = nla_data(attrs[BATADV_ATTR_ORIG_ADDRESS]);
router = nla_data(attrs[BATADV_ATTR_ROUTER]);
sprintf(addr, "%02x:%02x:%02x:%02x:%02x:%02x",
orig[0], orig[1], orig[2], orig[3], orig[4], orig[5]);
json_object_object_add(opts->obj, "gateway", json_object_new_string(addr));
sprintf(addr, "%02x:%02x:%02x:%02x:%02x:%02x",
router[0], router[1], router[2], router[3], router[4], router[5]);
json_object_object_add(opts->obj, "gateway_nexthop", json_object_new_string(addr));
return NL_STOP;
}
static void add_gateway(struct json_object *obj) {
struct gw_netlink_opts opts = {
.obj = obj,
.query_opts = {
.err = 0,
},
};
batadv_genl_query("bat0", BATADV_CMD_GET_GATEWAYS,
parse_gw_list_netlink_cb, NLM_F_DUMP,
&opts.query_opts);
}
static inline bool ethtool_ioctl(int fd, struct ifreq *ifr, void *data) {
ifr->ifr_data = data;
return (ioctl(fd, SIOCETHTOOL, ifr) >= 0);
}
static uint32_t ethtool_get_stats_length(int fd, struct ifreq *ifr) {
struct {
struct ethtool_sset_info info;
uint32_t buf;
} sset = {};
sset.info.cmd = ETHTOOL_GSSET_INFO;
sset.info.sset_mask = (uint64_t)1 << ETH_SS_STATS;
if (!ethtool_ioctl(fd, ifr, &sset.info))
return 0;
return sset.info.sset_mask ? sset.info.data[0] : 0;
}
static struct ethtool_gstrings * ethtool_get_stats_strings(int fd, struct ifreq *ifr) {
uint32_t n_stats = ethtool_get_stats_length(fd, ifr);
if (!n_stats)
return NULL;
struct ethtool_gstrings *strings = calloc(1, sizeof(*strings) + n_stats * ETH_GSTRING_LEN);
strings->cmd = ETHTOOL_GSTRINGS;
strings->string_set = ETH_SS_STATS;
strings->len = n_stats;
if (!ethtool_ioctl(fd, ifr, strings)) {
free(strings);
return NULL;
}
return strings;
}
static struct json_object * get_traffic(void) {
struct ethtool_gstrings *strings = NULL;
struct ethtool_stats *stats = NULL;
struct ifreq ifr = {};
strncpy(ifr.ifr_name, "bat0", IF_NAMESIZE);
struct json_object *ret = NULL;
int fd = socket(AF_INET, SOCK_DGRAM, 0);
if (fd < 0)
return NULL;
strings = ethtool_get_stats_strings(fd, &ifr);
if (!strings)
goto out;
stats = calloc(1, sizeof(struct ethtool_stats) + strings->len * sizeof(uint64_t));
stats->cmd = ETHTOOL_GSTATS;
stats->n_stats = strings->len;
if (!ethtool_ioctl(fd, &ifr, stats))
goto out;
struct json_object *rx = json_object_new_object();
struct json_object *tx = json_object_new_object();
struct json_object *forward = json_object_new_object();
struct json_object *mgmt_rx = json_object_new_object();
struct json_object *mgmt_tx = json_object_new_object();
size_t i;
for (i = 0; i < strings->len; i++) {
if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "rx", ETH_GSTRING_LEN))
json_object_object_add(rx, "packets", json_object_new_int64(stats->data[i]));
else if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "rx_bytes", ETH_GSTRING_LEN))
json_object_object_add(rx, "bytes", json_object_new_int64(stats->data[i]));
else if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "tx", ETH_GSTRING_LEN))
json_object_object_add(tx, "packets", json_object_new_int64(stats->data[i]));
else if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "tx_dropped", ETH_GSTRING_LEN))
json_object_object_add(tx, "dropped", json_object_new_int64(stats->data[i]));
else if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "tx_bytes", ETH_GSTRING_LEN))
json_object_object_add(tx, "bytes", json_object_new_int64(stats->data[i]));
else if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "forward", ETH_GSTRING_LEN))
json_object_object_add(forward, "packets", json_object_new_int64(stats->data[i]));
else if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "forward_bytes", ETH_GSTRING_LEN))
json_object_object_add(forward, "bytes", json_object_new_int64(stats->data[i]));
else if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "mgmt_rx", ETH_GSTRING_LEN))
json_object_object_add(mgmt_rx, "packets", json_object_new_int64(stats->data[i]));
else if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "mgmt_rx_bytes", ETH_GSTRING_LEN))
json_object_object_add(mgmt_rx, "bytes", json_object_new_int64(stats->data[i]));
else if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "mgmt_tx", ETH_GSTRING_LEN))
json_object_object_add(mgmt_tx, "packets", json_object_new_int64(stats->data[i]));
else if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "mgmt_tx_bytes", ETH_GSTRING_LEN))
json_object_object_add(mgmt_tx, "bytes", json_object_new_int64(stats->data[i]));
}
ret = json_object_new_object();
json_object_object_add(ret, "rx", rx);
json_object_object_add(ret, "tx", tx);
json_object_object_add(ret, "forward", forward);
json_object_object_add(ret, "mgmt_rx", mgmt_rx);
json_object_object_add(ret, "mgmt_tx", mgmt_tx);
out:
free(stats);
free(strings);
close(fd);
return ret;
}
static const enum batadv_nl_attrs clients_mandatory[] = {
BATADV_ATTR_TT_FLAGS,
/* Entries without the BATADV_TT_CLIENT_NOPURGE flag do not have a
* BATADV_ATTR_LAST_SEEN_MSECS attribute. We can still make this attr
* mandatory here, as entries without BATADV_TT_CLIENT_NOPURGE are
* ignored anyways.
*/
BATADV_ATTR_LAST_SEEN_MSECS,
};
static int parse_clients_list_netlink_cb(struct nl_msg *msg, void *arg)
{
struct nlattr *attrs[BATADV_ATTR_MAX+1];
struct nlmsghdr *nlh = nlmsg_hdr(msg);
struct batadv_nlquery_opts *query_opts = arg;
struct genlmsghdr *ghdr;
struct clients_netlink_opts *opts;
uint32_t flags, lastseen;
opts = batadv_container_of(query_opts, struct clients_netlink_opts,
query_opts);
if (!genlmsg_valid_hdr(nlh, 0))
return NL_OK;
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_genl_policy))
return NL_OK;
if (batadv_genl_missing_attrs(attrs, clients_mandatory,
BATADV_ARRAY_SIZE(clients_mandatory)))
return NL_OK;
flags = nla_get_u32(attrs[BATADV_ATTR_TT_FLAGS]);
if (flags & (BATADV_TT_CLIENT_NOPURGE))
return NL_OK;
lastseen = nla_get_u32(attrs[BATADV_ATTR_LAST_SEEN_MSECS]);
if (lastseen > MAX_INACTIVITY)
return NL_OK;
opts->clients++;
return NL_OK;
}
static struct json_object * get_clients(void) {
struct clients_netlink_opts opts = {
.clients = 0,
.query_opts = {
.err = 0,
},
};
batadv_genl_query("bat0", BATADV_CMD_GET_TRANSTABLE_LOCAL,
parse_clients_list_netlink_cb, NLM_F_DUMP,
&opts.query_opts);
struct json_object *ret = json_object_new_object();
json_object_object_add(ret, "total", json_object_new_int(opts.clients));
return ret;
}
struct json_object * respondd_provider_statistics(void) {
struct json_object *ret = json_object_new_object();
json_object_object_add(ret, "clients", get_clients());
json_object_object_add(ret, "traffic", get_traffic());
add_gateway(ret);
return ret;
}

615
package/gluon-mesh-batman-adv/src/respondd.c
View File

@ -1,5 +1,5 @@
/*
Copyright (c) 2016, Matthias Schiffer <mschiffer@universe-factory.net>
Copyright (c) 2016-2019, Matthias Schiffer <mschiffer@universe-factory.net>
All rights reserved.
Redistribution and use in source and binary forms, with or without
@ -23,621 +23,12 @@
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "respondd-common.h"
#include <respondd.h>
#include <json-c/json.h>
#include <libgluonutil.h>
#include <uci.h>
#include <alloca.h>
#include <glob.h>
#include <inttypes.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netlink/netlink.h>
#include <netlink/genl/genl.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <linux/ethtool.h>
#include <linux/if_addr.h>
#include <linux/rtnetlink.h>
#include <linux/sockios.h>
#include <batadv-genl.h>
#define MAX_INACTIVITY 60000
struct neigh_netlink_opts {
struct json_object *interfaces;
struct batadv_nlquery_opts query_opts;
};
struct gw_netlink_opts {
struct json_object *obj;
struct batadv_nlquery_opts query_opts;
};
struct clients_netlink_opts {
size_t clients;
struct batadv_nlquery_opts query_opts;
};
struct ip_address_information {
unsigned int ifindex;
struct json_object *addresses;
};
static int get_addresses_cb(struct nl_msg *msg, void *arg) {
struct ip_address_information *info = (struct ip_address_information*) arg;
struct nlmsghdr *nlh = nlmsg_hdr(msg);
struct ifaddrmsg *msg_content = NLMSG_DATA(nlh);
int remaining = nlh->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifaddrmsg));
struct rtattr *hdr;
for (hdr = IFA_RTA(msg_content); RTA_OK(hdr, remaining); hdr = RTA_NEXT(hdr, remaining)) {
char addr_str_buf[INET6_ADDRSTRLEN];
/* We are only interested in IP-addresses of br-client */
if (hdr->rta_type != IFA_ADDRESS ||
msg_content->ifa_index != info->ifindex ||
msg_content->ifa_flags & (IFA_F_TENTATIVE|IFA_F_DEPRECATED)) {
continue;
}
if (inet_ntop(AF_INET6, (struct in6_addr *) RTA_DATA(hdr), addr_str_buf, INET6_ADDRSTRLEN)) {
json_object_array_add(info->addresses, json_object_new_string(addr_str_buf));
}
}
return NL_OK;
}
static struct json_object *get_addresses(void) {
struct ip_address_information info = {
.ifindex = if_nametoindex("br-client"),
.addresses = json_object_new_array(),
};
int err;
/* Open socket */
struct nl_sock *socket = nl_socket_alloc();
if (!socket) {
return info.addresses;
}
err = nl_connect(socket, NETLINK_ROUTE);
if (err < 0) {
goto out_free;
}
/* Send message */
struct ifaddrmsg rt_hdr = { .ifa_family = AF_INET6, };
err = nl_send_simple(socket, RTM_GETADDR, NLM_F_REQUEST | NLM_F_ROOT, &rt_hdr, sizeof(struct ifaddrmsg));
if (err < 0) {
goto out_free;
}
/* Retrieve answer. Message is handled by get_addresses_cb */
nl_socket_modify_cb(socket, NL_CB_VALID, NL_CB_CUSTOM, get_addresses_cb, &info);
nl_recvmsgs_default(socket);
out_free:
nl_socket_free(socket);
return info.addresses;
}
static void add_if_not_empty(struct json_object *obj, const char *key, struct json_object *val) {
if (json_object_array_length(val))
json_object_object_add(obj, key, val);
else
json_object_put(val);
}
static bool interface_file_exists(const char *ifname, const char *name) {
const char *format = "/sys/class/net/%s/%s";
char path[strlen(format) + strlen(ifname) + strlen(name)];
snprintf(path, sizeof(path), format, ifname, name);
return !access(path, F_OK);
}
static void mesh_add_subif(const char *ifname, struct json_object *wireless,
struct json_object *tunnel, struct json_object *other) {
struct json_object *address = gluonutil_wrap_and_free_string(gluonutil_get_interface_address(ifname));
char lowername[IFNAMSIZ];
strncpy(lowername, ifname, sizeof(lowername)-1);
lowername[sizeof(lowername)-1] = 0;
const char *format = "/sys/class/net/%s/lower_*";
char pattern[strlen(format) + IFNAMSIZ];
/* In case of VLAN and bridge interfaces, we want the lower interface
* to determine the interface type (but not for the interface address) */
while (true) {
snprintf(pattern, sizeof(pattern), format, lowername);
size_t pattern_len = strlen(pattern);
glob_t lower;
if (glob(pattern, GLOB_NOSORT, NULL, &lower))
break;
strncpy(lowername, lower.gl_pathv[0] + pattern_len - 1, sizeof(lowername)-1);
globfree(&lower);
}
if (interface_file_exists(lowername, "wireless"))
json_object_array_add(wireless, address);
else if (interface_file_exists(lowername, "tun_flags"))
json_object_array_add(tunnel, address);
else
json_object_array_add(other, address);
}
static struct json_object * get_mesh_subifs(const char *ifname) {
struct json_object *wireless = json_object_new_array();
struct json_object *tunnel = json_object_new_array();
struct json_object *other = json_object_new_array();
const char *format = "/sys/class/net/%s/lower_*";
char pattern[strlen(format) + strlen(ifname) - 1];
snprintf(pattern, sizeof(pattern), format, ifname);
size_t pattern_len = strlen(pattern);
glob_t lower;
if (!glob(pattern, GLOB_NOSORT, NULL, &lower)) {
size_t i;
for (i = 0; i < lower.gl_pathc; i++) {
mesh_add_subif(lower.gl_pathv[i] + pattern_len - 1,
wireless, tunnel, other);
}
globfree(&lower);
}
struct json_object *ret = json_object_new_object();
add_if_not_empty(ret, "wireless", wireless);
add_if_not_empty(ret, "tunnel", tunnel);
add_if_not_empty(ret, "other", other);
return ret;
}
static struct json_object * get_mesh(void) {
struct json_object *ret = json_object_new_object();
struct json_object *bat0_interfaces = json_object_new_object();
json_object_object_add(bat0_interfaces, "interfaces", get_mesh_subifs("bat0"));
json_object_object_add(ret, "bat0", bat0_interfaces);
return ret;
}
static struct json_object * respondd_provider_nodeinfo(void) {
struct json_object *ret = json_object_new_object();
struct json_object *network = json_object_new_object();
json_object_object_add(network, "addresses", get_addresses());
json_object_object_add(network, "mesh", get_mesh());
json_object_object_add(ret, "network", network);
struct json_object *software = json_object_new_object();
struct json_object *software_batman_adv = json_object_new_object();
json_object_object_add(software_batman_adv, "version",
gluonutil_wrap_and_free_string(gluonutil_read_line("/sys/module/batman_adv/version")));
json_object_object_add(software_batman_adv, "compat", json_object_new_int(15));
json_object_object_add(software, "batman-adv", software_batman_adv);
json_object_object_add(ret, "software", software);
return ret;
}
static const enum batadv_nl_attrs gateways_mandatory[] = {
BATADV_ATTR_ORIG_ADDRESS,
BATADV_ATTR_ROUTER,
};
static int parse_gw_list_netlink_cb(struct nl_msg *msg, void *arg)
{
struct nlattr *attrs[BATADV_ATTR_MAX+1];
struct nlmsghdr *nlh = nlmsg_hdr(msg);
struct batadv_nlquery_opts *query_opts = arg;
struct genlmsghdr *ghdr;
uint8_t *orig;
uint8_t *router;
struct gw_netlink_opts *opts;
char addr[18];
opts = batadv_container_of(query_opts, struct gw_netlink_opts,
query_opts);
if (!genlmsg_valid_hdr(nlh, 0))
return NL_OK;
ghdr = nlmsg_data(nlh);
if (ghdr->cmd != BATADV_CMD_GET_GATEWAYS)
return NL_OK;
if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0),
genlmsg_len(ghdr), batadv_genl_policy))
return NL_OK;
if (batadv_genl_missing_attrs(attrs, gateways_mandatory,
BATADV_ARRAY_SIZE(gateways_mandatory)))
return NL_OK;
if (!attrs[BATADV_ATTR_FLAG_BEST])
return NL_OK;
orig = nla_data(attrs[BATADV_ATTR_ORIG_ADDRESS]);
router = nla_data(attrs[BATADV_ATTR_ROUTER]);
sprintf(addr, "%02x:%02x:%02x:%02x:%02x:%02x",
orig[0], orig[1], orig[2], orig[3], orig[4], orig[5]);
json_object_object_add(opts->obj, "gateway", json_object_new_string(addr));
sprintf(addr, "%02x:%02x:%02x:%02x:%02x:%02x",
router[0], router[1], router[2], router[3], router[4], router[5]);
json_object_object_add(opts->obj, "gateway_nexthop", json_object_new_string(addr));
return NL_STOP;
}
static void add_gateway(struct json_object *obj) {
struct gw_netlink_opts opts = {
.obj = obj,
.query_opts = {
.err = 0,
},
};
batadv_genl_query("bat0", BATADV_CMD_GET_GATEWAYS,
parse_gw_list_netlink_cb, NLM_F_DUMP,
&opts.query_opts);
}
static inline bool ethtool_ioctl(int fd, struct ifreq *ifr, void *data) {
ifr->ifr_data = data;
return (ioctl(fd, SIOCETHTOOL, ifr) >= 0);
}
static uint32_t ethtool_get_stats_length(int fd, struct ifreq *ifr) {
const size_t sset_info_len = sizeof(struct ethtool_sset_info) + sizeof(uint32_t);
struct ethtool_sset_info *sset_info = alloca(sset_info_len);
memset(sset_info, 0, sset_info_len);
sset_info->cmd = ETHTOOL_GSSET_INFO;
sset_info->sset_mask = 1ull << ETH_SS_STATS;
if (!ethtool_ioctl(fd, ifr, sset_info))
return 0;
return sset_info->sset_mask ? sset_info->data[0] : 0;
}
static struct ethtool_gstrings * ethtool_get_stats_strings(int fd, struct ifreq *ifr) {
uint32_t n_stats = ethtool_get_stats_length(fd, ifr);
if (!n_stats)
return NULL;
struct ethtool_gstrings *strings = calloc(1, sizeof(*strings) + n_stats * ETH_GSTRING_LEN);
strings->cmd = ETHTOOL_GSTRINGS;
strings->string_set = ETH_SS_STATS;
strings->len = n_stats;
if (!ethtool_ioctl(fd, ifr, strings)) {
free(strings);
return NULL;
}
return strings;
}
static struct json_object * get_traffic(void) {
struct ethtool_gstrings *strings = NULL;
struct ethtool_stats *stats = NULL;
struct ifreq ifr = {};
strncpy(ifr.ifr_name, "bat0", IF_NAMESIZE);
struct json_object *ret = NULL;
int fd = socket(AF_INET, SOCK_DGRAM, 0);
if (fd < 0)
return NULL;
strings = ethtool_get_stats_strings(fd, &ifr);
if (!strings)
goto out;
stats = calloc(1, sizeof(struct ethtool_stats) + strings->len * sizeof(uint64_t));
stats->cmd = ETHTOOL_GSTATS;
stats->n_stats = strings->len;
if (!ethtool_ioctl(fd, &ifr, stats))
goto out;
struct json_object *rx = json_object_new_object();
struct json_object *tx = json_object_new_object();
struct json_object *forward = json_object_new_object();
struct json_object *mgmt_rx = json_object_new_object();
struct json_object *mgmt_tx = json_object_new_object();
size_t i;
for (i = 0; i < strings->len; i++) {
if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "rx", ETH_GSTRING_LEN))
json_object_object_add(rx, "packets", json_object_new_int64(stats->data[i]));
else if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "rx_bytes", ETH_GSTRING_LEN))
json_object_object_add(rx, "bytes", json_object_new_int64(stats->data[i]));
else if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "tx", ETH_GSTRING_LEN))
json_object_object_add(tx, "packets", json_object_new_int64(stats->data[i]));
else if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "tx_dropped", ETH_GSTRING_LEN))
json_object_object_add(tx, "dropped", json_object_new_int64(stats->data[i]));
else if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "tx_bytes", ETH_GSTRING_LEN))
json_object_object_add(tx, "bytes", json_object_new_int64(stats->data[i]));
else if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "forward", ETH_GSTRING_LEN))
json_object_object_add(forward, "packets", json_object_new_int64(stats->data[i]));
else if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "forward_bytes", ETH_GSTRING_LEN))
json_object_object_add(forward, "bytes", json_object_new_int64(stats->data[i]));
else if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "mgmt_rx", ETH_GSTRING_LEN))
json_object_object_add(mgmt_rx, "packets", json_object_new_int64(stats->data[i]));
else if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "mgmt_rx_bytes", ETH_GSTRING_LEN))
json_object_object_add(mgmt_rx, "bytes", json_object_new_int64(stats->data[i]));
else if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "mgmt_tx", ETH_GSTRING_LEN))
json_object_object_add(mgmt_tx, "packets", json_object_new_int64(stats->data[i]));
else if (!strncmp((const char*)&strings->data[i * ETH_GSTRING_LEN], "mgmt_tx_bytes", ETH_GSTRING_LEN))
json_object_object_add(mgmt_tx, "bytes", json_object_new_int64(stats->data[i]));
}
ret = json_object_new_object();
json_object_object_add(ret, "rx", rx);
json_object_object_add(ret, "tx", tx);
json_object_object_add(ret, "forward", forward);
json_object_object_add(ret, "mgmt_rx", mgmt_rx);
json_object_object_add(ret, "mgmt_tx", mgmt_tx);
out:
free(stats);
free(strings);
close(fd);
return ret;
}
static const enum batadv_nl_attrs clients_mandatory[] = {
BATADV_ATTR_TT_FLAGS,
/* Entries without the BATADV_TT_CLIENT_NOPURGE flag do not have a
* BATADV_ATTR_LAST_SEEN_MSECS attribute. We can still make this attr
* mandatory here, as entries without BATADV_TT_CLIENT_NOPURGE are
* ignored anyways.
*/
BATADV_ATTR_LAST_SEEN_MSECS,
};
static int parse_clients_list_netlink_cb(struct nl_msg *msg, void *arg)
{
struct nlattr *attrs[BATADV_ATTR_MAX+1];
struct nlmsghdr *nlh = nlmsg_hdr(msg);
struct batadv_nlquery_opts *query_opts = arg;
struct genlmsghdr *ghdr;
struct clients_netlink_opts *opts;
uint32_t flags, lastseen;
opts = batadv_container_of(query_opts, struct clients_netlink_opts,
query_opts);
if (!genlmsg_valid_hdr(nlh, 0))
return NL_OK;
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_genl_policy))
return NL_OK;
if (batadv_genl_missing_attrs(attrs, clients_mandatory,
BATADV_ARRAY_SIZE(clients_mandatory)))
return NL_OK;
flags = nla_get_u32(attrs[BATADV_ATTR_TT_FLAGS]);
if (flags & (BATADV_TT_CLIENT_NOPURGE))
return NL_OK;
lastseen = nla_get_u32(attrs[BATADV_ATTR_LAST_SEEN_MSECS]);
if (lastseen > MAX_INACTIVITY)
return NL_OK;
opts->clients++;
return NL_OK;
}
static struct json_object * get_clients(void) {
struct clients_netlink_opts opts = {
.clients = 0,
.query_opts = {
.err = 0,
},
};
batadv_genl_query("bat0", BATADV_CMD_GET_TRANSTABLE_LOCAL,
parse_clients_list_netlink_cb, NLM_F_DUMP,
&opts.query_opts);
struct json_object *ret = json_object_new_object();
json_object_object_add(ret, "total", json_object_new_int(opts.clients));
return ret;
}
static struct json_object * respondd_provider_statistics(void) {
struct json_object *ret = json_object_new_object();
json_object_object_add(ret, "clients", get_clients());
json_object_object_add(ret, "traffic", get_traffic());
add_gateway(ret);
return ret;
}
static struct json_object * ifnames2addrs(struct json_object *interfaces) {
struct json_object *ret = json_object_new_object();
json_object_object_foreach(interfaces, ifname, interface) {
char *ifaddr = gluonutil_get_interface_address(ifname);
if (!ifaddr)
continue;
struct json_object *obj = json_object_new_object();
json_object_object_add(obj, "neighbours", json_object_get(interface));
json_object_object_add(ret, ifaddr, obj);
free(ifaddr);
}
json_object_put(interfaces);
return ret;
}
static const enum batadv_nl_attrs parse_orig_list_mandatory[] = {
BATADV_ATTR_ORIG_ADDRESS,
BATADV_ATTR_NEIGH_ADDRESS,
BATADV_ATTR_TQ,
BATADV_ATTR_HARD_IFINDEX,
BATADV_ATTR_LAST_SEEN_MSECS,
};
static int parse_orig_list_netlink_cb(struct nl_msg *msg, void *arg)
{
struct nlattr *attrs[BATADV_ATTR_MAX+1];
struct nlmsghdr *nlh = nlmsg_hdr(msg);
struct batadv_nlquery_opts *query_opts = arg;
struct genlmsghdr *ghdr;
uint8_t *orig;
uint8_t *dest;
uint8_t tq;
uint32_t hardif;
uint32_t lastseen;
char ifname_buf[IF_NAMESIZE], *ifname;
struct neigh_netlink_opts *opts;
char mac1[18];
opts = batadv_container_of(query_opts, struct neigh_netlink_opts,
query_opts);
if (!genlmsg_valid_hdr(nlh, 0))
return NL_OK;
ghdr = nlmsg_data(nlh);
if (ghdr->cmd != BATADV_CMD_GET_ORIGINATORS)
return NL_OK;
if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0),
genlmsg_len(ghdr), batadv_genl_policy))
return NL_OK;
if (batadv_genl_missing_attrs(attrs, parse_orig_list_mandatory,
BATADV_ARRAY_SIZE(parse_orig_list_mandatory)))
return NL_OK;
orig = nla_data(attrs[BATADV_ATTR_ORIG_ADDRESS]);
dest = nla_data(attrs[BATADV_ATTR_NEIGH_ADDRESS]);
tq = nla_get_u8(attrs[BATADV_ATTR_TQ]);
hardif = nla_get_u32(attrs[BATADV_ATTR_HARD_IFINDEX]);
lastseen = nla_get_u32(attrs[BATADV_ATTR_LAST_SEEN_MSECS]);
if (memcmp(orig, dest, 6) != 0)
return NL_OK;
ifname = if_indextoname(hardif, ifname_buf);
if (!ifname)
return NL_OK;
sprintf(mac1, "%02x:%02x:%02x:%02x:%02x:%02x",
orig[0], orig[1], orig[2], orig[3], orig[4], orig[5]);
struct json_object *obj = json_object_new_object();
if (!obj)
return NL_OK;
struct json_object *interface;
if (!json_object_object_get_ex(opts->interfaces, ifname, &interface)) {
interface = json_object_new_object();
json_object_object_add(opts->interfaces, ifname, interface);
}
json_object_object_add(obj, "tq", json_object_new_int(tq));
json_object_object_add(obj, "lastseen", json_object_new_double(lastseen / 1000.));
json_object_object_add(obj, "best", json_object_new_boolean(!!attrs[BATADV_ATTR_FLAG_BEST]));
json_object_object_add(interface, mac1, obj);
return NL_OK;
}
static struct json_object * get_batadv(void) {
struct neigh_netlink_opts opts = {
.query_opts = {
.err = 0,
},
};
int ret;
opts.interfaces = json_object_new_object();
if (!opts.interfaces)
return NULL;
ret = batadv_genl_query("bat0", BATADV_CMD_GET_ORIGINATORS,
parse_orig_list_netlink_cb, NLM_F_DUMP,
&opts.query_opts);
if (ret < 0) {
json_object_put(opts.interfaces);
return NULL;
}
return ifnames2addrs(opts.interfaces);
}
static struct json_object * respondd_provider_neighbours(void) {
struct json_object *ret = json_object_new_object();
struct json_object *batadv = get_batadv();
if (batadv)
json_object_object_add(ret, "batadv", batadv);
return ret;
}
__attribute__ ((visibility ("default")))
const struct respondd_provider_info respondd_providers[] = {
{"nodeinfo", respondd_provider_nodeinfo},
{"statistics", respondd_provider_statistics},