diff --git a/package/gluon-mesh-batman-adv-core/Makefile b/package/gluon-mesh-batman-adv-core/Makefile index 25c3b9b0..1989ab78 100644 --- a/package/gluon-mesh-batman-adv-core/Makefile +++ b/package/gluon-mesh-batman-adv-core/Makefile @@ -13,7 +13,7 @@ define Package/gluon-mesh-batman-adv-core SECTION:=gluon CATEGORY:=Gluon TITLE:=Support for batman-adv meshing (core) - DEPENDS:=+gluon-core +libgluonutil +gluon-client-bridge +gluon-ebtables +firewall +libiwinfo +kmod-dummy +kmod-macvlan + DEPENDS:=+gluon-core +libgluonutil +gluon-client-bridge +gluon-ebtables +firewall +libiwinfo +kmod-dummy +kmod-macvlan +libnl-tiny endef define Build/Prepare diff --git a/package/gluon-mesh-batman-adv-core/src/Makefile b/package/gluon-mesh-batman-adv-core/src/Makefile index 84d9d48e..9206a067 100644 --- a/package/gluon-mesh-batman-adv-core/src/Makefile +++ b/package/gluon-mesh-batman-adv-core/src/Makefile @@ -2,5 +2,23 @@ all: respondd.so CFLAGS += -Wall -respondd.so: respondd.c +ifeq ($(origin PKG_CONFIG), undefined) + PKG_CONFIG = pkg-config + ifeq ($(shell which $(PKG_CONFIG) 2>/dev/null),) + $(error $(PKG_CONFIG) not found) + endif +endif + +ifeq ($(origin LIBNL_CFLAGS) $(origin LIBNL_LDLIBS), undefined undefined) + LIBNL_NAME ?= libnl-tiny + ifeq ($(shell $(PKG_CONFIG) --modversion $(LIBNL_NAME) 2>/dev/null),) + $(error No $(LIBNL_NAME) development libraries found!) + endif + LIBNL_CFLAGS += $(shell $(PKG_CONFIG) --cflags $(LIBNL_NAME)) + LIBNL_LDLIBS += $(shell $(PKG_CONFIG) --libs $(LIBNL_NAME)) +endif +CFLAGS += $(LIBNL_CFLAGS) +LDLIBS += $(LIBNL_LDLIBS) + +respondd.so: respondd.c batadv-netlink.c $(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -shared -fPIC -D_GNU_SOURCE -o $@ $^ $(LDLIBS) -lgluonutil -liwinfo -luci diff --git a/package/gluon-mesh-batman-adv-core/src/batadv-netlink.c b/package/gluon-mesh-batman-adv-core/src/batadv-netlink.c new file mode 100644 index 00000000..aeea7624 --- /dev/null +++ b/package/gluon-mesh-batman-adv-core/src/batadv-netlink.c @@ -0,0 +1,149 @@ +/* + * Copyright (C) 2009-2016 B.A.T.M.A.N. contributors: + * + * Marek Lindner , Andrew Lunn + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2 of the GNU General Public + * License as published by the Free Software Foundation. + * + * 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 "batadv-netlink.h" + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "batman_adv.h" + +#ifndef __maybe_unused +#define __maybe_unused __attribute__((unused)) +#endif + +struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = { + [BATADV_ATTR_HARD_IFINDEX] = { .type = NLA_U32 }, + [BATADV_ATTR_ORIG_ADDRESS] = { .type = NLA_UNSPEC, + .minlen = ETH_ALEN, + .maxlen = ETH_ALEN }, + [BATADV_ATTR_TT_FLAGS] = { .type = NLA_U32 }, + [BATADV_ATTR_FLAG_BEST] = { .type = NLA_FLAG }, + [BATADV_ATTR_LAST_SEEN_MSECS] = { .type = NLA_U32 }, + [BATADV_ATTR_NEIGH_ADDRESS] = { .type = NLA_UNSPEC, + .minlen = ETH_ALEN, + .maxlen = ETH_ALEN }, + [BATADV_ATTR_TQ] = { .type = NLA_U8 }, + [BATADV_ATTR_ROUTER] = { .type = NLA_UNSPEC, + .minlen = ETH_ALEN, + .maxlen = ETH_ALEN }, +}; + +static int nlquery_error_cb(struct sockaddr_nl *nla __maybe_unused, + struct nlmsgerr *nlerr, void *arg) +{ + struct batadv_nlquery_opts *query_opts = arg; + + query_opts->err = nlerr->error; + + return NL_STOP; +} + +static int nlquery_stop_cb(struct nl_msg *msg, void *arg) +{ + struct nlmsghdr *nlh = nlmsg_hdr(msg); + struct batadv_nlquery_opts *query_opts = arg; + int *error = nlmsg_data(nlh); + + if (*error) + query_opts->err = *error; + + return NL_STOP; +} + +int batadv_nl_query_common(const char *mesh_iface, + enum batadv_nl_commands nl_cmd, + nl_recvmsg_msg_cb_t callback, int flags, + struct batadv_nlquery_opts *query_opts) +{ + struct nl_sock *sock; + struct nl_msg *msg; + struct nl_cb *cb; + int ifindex; + int family; + int ret; + + query_opts->err = 0; + + sock = nl_socket_alloc(); + if (!sock) + return -ENOMEM; + + ret = genl_connect(sock); + if (ret < 0) { + query_opts->err = ret; + goto err_free_sock; + } + + family = genl_ctrl_resolve(sock, BATADV_NL_NAME); + if (family < 0) { + query_opts->err = -EOPNOTSUPP; + goto err_free_sock; + } + + ifindex = if_nametoindex(mesh_iface); + if (!ifindex) { + query_opts->err = -ENODEV; + goto err_free_sock; + } + + cb = nl_cb_alloc(NL_CB_DEFAULT); + if (!cb) { + query_opts->err = -ENOMEM; + goto err_free_sock; + } + + nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, callback, query_opts); + nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, nlquery_stop_cb, query_opts); + nl_cb_err(cb, NL_CB_CUSTOM, nlquery_error_cb, query_opts); + + msg = nlmsg_alloc(); + if (!msg) { + query_opts->err = -ENOMEM; + goto err_free_cb; + } + + genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, family, 0, flags, + nl_cmd, 1); + + nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX, ifindex); + nl_send_auto_complete(sock, msg); + nlmsg_free(msg); + + nl_recvmsgs(sock, cb); + +err_free_cb: + nl_cb_put(cb); +err_free_sock: + nl_socket_free(sock); + + return query_opts->err; +} diff --git a/package/gluon-mesh-batman-adv-core/src/batadv-netlink.h b/package/gluon-mesh-batman-adv-core/src/batadv-netlink.h new file mode 100644 index 00000000..8b85a6c2 --- /dev/null +++ b/package/gluon-mesh-batman-adv-core/src/batadv-netlink.h @@ -0,0 +1,68 @@ +/* + * Copyright (C) 2009-2016 B.A.T.M.A.N. contributors: + * + * Marek Lindner , Andrew Lunn + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2 of the GNU General Public + * License as published by the Free Software Foundation. + * + * 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 + * + */ + +#ifndef _BATADV_NETLINK_H +#define _BATADV_NETLINK_H + +#include +#include +#include +#include +#include + +#include "batman_adv.h" + +struct batadv_nlquery_opts { + int err; +}; + +#ifndef ARRAY_SIZE +#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x))) +#endif + +#ifndef container_of +#define container_of(ptr, type, member) __extension__ ({ \ + const __typeof__(((type *)0)->member) *__pmember = (ptr); \ + (type *)((char *)__pmember - offsetof(type, member)); }) +#endif + +int batadv_nl_query_common(const char *mesh_iface, + enum batadv_nl_commands nl_cmd, + nl_recvmsg_msg_cb_t callback, int flags, + struct batadv_nlquery_opts *query_opts); + +static inline bool batadv_nl_missing_attrs(struct nlattr *attrs[], + const enum batadv_nl_attrs mandatory[], + size_t num) +{ + size_t i; + + for (i = 0; i < num; i++) { + if (!attrs[mandatory[i]]) + return true; + } + + return false; +} + +extern struct nla_policy batadv_netlink_policy[]; + +#endif /* _BATADV_NETLINK_H */ diff --git a/package/gluon-mesh-batman-adv-core/src/batman_adv.h b/package/gluon-mesh-batman-adv-core/src/batman_adv.h new file mode 100644 index 00000000..734fe83a --- /dev/null +++ b/package/gluon-mesh-batman-adv-core/src/batman_adv.h @@ -0,0 +1,208 @@ +/* Copyright (C) 2016 B.A.T.M.A.N. contributors: + * + * Matthias Schiffer + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef _UAPI_LINUX_BATMAN_ADV_H_ +#define _UAPI_LINUX_BATMAN_ADV_H_ + +#define BATADV_NL_NAME "batadv" + +#define BATADV_NL_MCAST_GROUP_TPMETER "tpmeter" + +/** + * enum batadv_tt_client_flags - TT client specific flags + * @BATADV_TT_CLIENT_DEL: the client has to be deleted from the table + * @BATADV_TT_CLIENT_ROAM: the client roamed to/from another node and the new + * update telling its new real location has not been received/sent yet + * @BATADV_TT_CLIENT_WIFI: this client is connected through a wifi interface. + * This information is used by the "AP Isolation" feature + * @BATADV_TT_CLIENT_ISOLA: this client is considered "isolated". This + * information is used by the Extended Isolation feature + * @BATADV_TT_CLIENT_NOPURGE: this client should never be removed from the table + * @BATADV_TT_CLIENT_NEW: this client has been added to the local table but has + * not been announced yet + * @BATADV_TT_CLIENT_PENDING: this client is marked for removal but it is kept + * in the table for one more originator interval for consistency purposes + * @BATADV_TT_CLIENT_TEMP: this global client has been detected to be part of + * the network but no nnode has already announced it + * + * Bits from 0 to 7 are called _remote flags_ because they are sent on the wire. + * Bits from 8 to 15 are called _local flags_ because they are used for local + * computations only. + * + * Bits from 4 to 7 - a subset of remote flags - are ensured to be in sync with + * the other nodes in the network. To achieve this goal these flags are included + * in the TT CRC computation. + */ +enum batadv_tt_client_flags { + BATADV_TT_CLIENT_DEL = (1 << 0), + BATADV_TT_CLIENT_ROAM = (1 << 1), + BATADV_TT_CLIENT_WIFI = (1 << 4), + BATADV_TT_CLIENT_ISOLA = (1 << 5), + BATADV_TT_CLIENT_NOPURGE = (1 << 8), + BATADV_TT_CLIENT_NEW = (1 << 9), + BATADV_TT_CLIENT_PENDING = (1 << 10), + BATADV_TT_CLIENT_TEMP = (1 << 11), +}; + +/** + * enum batadv_nl_attrs - batman-adv netlink attributes + * + * @BATADV_ATTR_UNSPEC: unspecified attribute to catch errors + * @BATADV_ATTR_VERSION: batman-adv version string + * @BATADV_ATTR_ALGO_NAME: name of routing algorithm + * @BATADV_ATTR_MESH_IFINDEX: index of the batman-adv interface + * @BATADV_ATTR_MESH_IFNAME: name of the batman-adv interface + * @BATADV_ATTR_MESH_ADDRESS: mac address of the batman-adv interface + * @BATADV_ATTR_HARD_IFINDEX: index of the non-batman-adv interface + * @BATADV_ATTR_HARD_IFNAME: name of the non-batman-adv interface + * @BATADV_ATTR_HARD_ADDRESS: mac address of the non-batman-adv interface + * @BATADV_ATTR_ORIG_ADDRESS: originator mac address + * @BATADV_ATTR_TPMETER_RESULT: result of run (see batadv_tp_meter_status) + * @BATADV_ATTR_TPMETER_TEST_TIME: time (msec) the run took + * @BATADV_ATTR_TPMETER_BYTES: amount of acked bytes during run + * @BATADV_ATTR_TPMETER_COOKIE: session cookie to match tp_meter session + * @BATADV_ATTR_PAD: attribute used for padding for 64-bit alignment + * @BATADV_ATTR_ACTIVE: Flag indicating if the hard interface is active + * @BATADV_ATTR_TT_ADDRESS: Client MAC address + * @BATADV_ATTR_TT_TTVN: Translation table version + * @BATADV_ATTR_TT_LAST_TTVN: Previous translation table version + * @BATADV_ATTR_TT_CRC32: CRC32 over translation table + * @BATADV_ATTR_TT_VID: VLAN ID + * @BATADV_ATTR_TT_FLAGS: Translation table client flags + * @BATADV_ATTR_FLAG_BEST: Flags indicating entry is the best + * @BATADV_ATTR_LAST_SEEN_MSECS: Time in milliseconds since last seen + * @BATADV_ATTR_NEIGH_ADDRESS: Neighbour MAC address + * @BATADV_ATTR_TQ: TQ to neighbour + * @BATADV_ATTR_THROUGHPUT: Estimated throughput to Neighbour + * @BATADV_ATTR_BANDWIDTH_UP: Reported uplink bandwidth + * @BATADV_ATTR_BANDWIDTH_DOWN: Reported downlink bandwidth + * @BATADV_ATTR_ROUTER: Gateway router MAC address + * @BATADV_ATTR_BLA_OWN: Flag indicating own originator + * @BATADV_ATTR_BLA_ADDRESS: Bridge loop avoidance claim MAC address + * @BATADV_ATTR_BLA_VID: BLA VLAN ID + * @BATADV_ATTR_BLA_BACKBONE: BLA gateway originator MAC address + * @BATADV_ATTR_BLA_CRC: BLA CRC + * @__BATADV_ATTR_AFTER_LAST: internal use + * @NUM_BATADV_ATTR: total number of batadv_nl_attrs available + * @BATADV_ATTR_MAX: highest attribute number currently defined + */ +enum batadv_nl_attrs { + BATADV_ATTR_UNSPEC, + BATADV_ATTR_VERSION, + BATADV_ATTR_ALGO_NAME, + BATADV_ATTR_MESH_IFINDEX, + BATADV_ATTR_MESH_IFNAME, + BATADV_ATTR_MESH_ADDRESS, + BATADV_ATTR_HARD_IFINDEX, + BATADV_ATTR_HARD_IFNAME, + BATADV_ATTR_HARD_ADDRESS, + BATADV_ATTR_ORIG_ADDRESS, + BATADV_ATTR_TPMETER_RESULT, + BATADV_ATTR_TPMETER_TEST_TIME, + BATADV_ATTR_TPMETER_BYTES, + BATADV_ATTR_TPMETER_COOKIE, + BATADV_ATTR_PAD, + BATADV_ATTR_ACTIVE, + BATADV_ATTR_TT_ADDRESS, + BATADV_ATTR_TT_TTVN, + BATADV_ATTR_TT_LAST_TTVN, + BATADV_ATTR_TT_CRC32, + BATADV_ATTR_TT_VID, + BATADV_ATTR_TT_FLAGS, + BATADV_ATTR_FLAG_BEST, + BATADV_ATTR_LAST_SEEN_MSECS, + BATADV_ATTR_NEIGH_ADDRESS, + BATADV_ATTR_TQ, + BATADV_ATTR_THROUGHPUT, + BATADV_ATTR_BANDWIDTH_UP, + BATADV_ATTR_BANDWIDTH_DOWN, + BATADV_ATTR_ROUTER, + BATADV_ATTR_BLA_OWN, + BATADV_ATTR_BLA_ADDRESS, + BATADV_ATTR_BLA_VID, + BATADV_ATTR_BLA_BACKBONE, + BATADV_ATTR_BLA_CRC, + /* add attributes above here, update the policy in netlink.c */ + __BATADV_ATTR_AFTER_LAST, + NUM_BATADV_ATTR = __BATADV_ATTR_AFTER_LAST, + BATADV_ATTR_MAX = __BATADV_ATTR_AFTER_LAST - 1 +}; + +/** + * enum batadv_nl_commands - supported batman-adv netlink commands + * + * @BATADV_CMD_UNSPEC: unspecified command to catch errors + * @BATADV_CMD_GET_MESH_INFO: Query basic information about batman-adv device + * @BATADV_CMD_TP_METER: Start a tp meter session + * @BATADV_CMD_TP_METER_CANCEL: Cancel a tp meter session + * @BATADV_CMD_GET_ROUTING_ALGOS: Query the list of routing algorithms. + * @BATADV_CMD_GET_HARDIFS: Query list of hard interfaces + * @BATADV_CMD_GET_TRANSTABLE_LOCAL: Query list of local translations + * @BATADV_CMD_GET_TRANSTABLE_GLOBAL Query list of global translations + * @BATADV_CMD_GET_ORIGINATORS: Query list of originators + * @BATADV_CMD_GET_NEIGHBORS: Query list of neighbours + * @BATADV_CMD_GET_GATEWAYS: Query list of gateways + * @BATADV_CMD_GET_BLA_CLAIM: Query list of bridge loop avoidance claims + * @BATADV_CMD_GET_BLA_BACKBONE: Query list of bridge loop avoidance backbones + * @__BATADV_CMD_AFTER_LAST: internal use + * @BATADV_CMD_MAX: highest used command number + */ +enum batadv_nl_commands { + BATADV_CMD_UNSPEC, + BATADV_CMD_GET_MESH_INFO, + BATADV_CMD_TP_METER, + BATADV_CMD_TP_METER_CANCEL, + BATADV_CMD_GET_ROUTING_ALGOS, + BATADV_CMD_GET_HARDIFS, + BATADV_CMD_GET_TRANSTABLE_LOCAL, + BATADV_CMD_GET_TRANSTABLE_GLOBAL, + BATADV_CMD_GET_ORIGINATORS, + BATADV_CMD_GET_NEIGHBORS, + BATADV_CMD_GET_GATEWAYS, + BATADV_CMD_GET_BLA_CLAIM, + BATADV_CMD_GET_BLA_BACKBONE, + /* add new commands above here */ + __BATADV_CMD_AFTER_LAST, + BATADV_CMD_MAX = __BATADV_CMD_AFTER_LAST - 1 +}; + +/** + * enum batadv_tp_meter_reason - reason of a tp meter test run stop + * @BATADV_TP_REASON_COMPLETE: sender finished tp run + * @BATADV_TP_REASON_CANCEL: sender was stopped during run + * @BATADV_TP_REASON_DST_UNREACHABLE: receiver could not be reached or didn't + * answer + * @BATADV_TP_REASON_RESEND_LIMIT: (unused) sender retry reached limit + * @BATADV_TP_REASON_ALREADY_ONGOING: test to or from the same node already + * ongoing + * @BATADV_TP_REASON_MEMORY_ERROR: test was stopped due to low memory + * @BATADV_TP_REASON_CANT_SEND: failed to send via outgoing interface + * @BATADV_TP_REASON_TOO_MANY: too many ongoing sessions + */ +enum batadv_tp_meter_reason { + BATADV_TP_REASON_COMPLETE = 3, + BATADV_TP_REASON_CANCEL = 4, + /* error status >= 128 */ + BATADV_TP_REASON_DST_UNREACHABLE = 128, + BATADV_TP_REASON_RESEND_LIMIT = 129, + BATADV_TP_REASON_ALREADY_ONGOING = 130, + BATADV_TP_REASON_MEMORY_ERROR = 131, + BATADV_TP_REASON_CANT_SEND = 132, + BATADV_TP_REASON_TOO_MANY = 133, +}; + +#endif /* _UAPI_LINUX_BATMAN_ADV_H_ */ diff --git a/package/gluon-mesh-batman-adv-core/src/respondd.c b/package/gluon-mesh-batman-adv-core/src/respondd.c index a84076e9..33e1e0d5 100644 --- a/package/gluon-mesh-batman-adv-core/src/respondd.c +++ b/package/gluon-mesh-batman-adv-core/src/respondd.c @@ -51,11 +51,28 @@ #include #include +#include "batadv-netlink.h" #define _STRINGIFY(s) #s #define STRINGIFY(s) _STRINGIFY(s) +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 total; + size_t wifi; + struct batadv_nlquery_opts query_opts; +}; + static struct json_object * get_addresses(void) { FILE *f = fopen("/proc/net/if_inet6", "r"); @@ -223,29 +240,70 @@ static struct json_object * respondd_provider_nodeinfo(void) { 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 = 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_netlink_policy)) + return NL_OK; + + if (batadv_nl_missing_attrs(attrs, gateways_mandatory, + 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) { - FILE *f = fopen("/sys/kernel/debug/batman_adv/bat0/gateways", "r"); - if (!f) - return; + struct gw_netlink_opts opts = { + .obj = obj, + .query_opts = { + .err = 0, + }, + }; - char *line = NULL; - size_t len = 0; - - while (getline(&line, &len, f) >= 0) { - char addr[18]; - char nexthop[18]; - - if (sscanf(line, "=> %17[0-9a-fA-F:] ( %*u) %17[0-9a-fA-F:]", addr, nexthop) != 2) - continue; - - json_object_object_add(obj, "gateway", json_object_new_string(addr)); - json_object_object_add(obj, "gateway_nexthop", json_object_new_string(nexthop)); - break; - } - - free(line); - fclose(f); + batadv_nl_query_common("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) { @@ -421,39 +479,69 @@ static void count_stations(size_t *wifi24, size_t *wifi5) { uci_free_context(ctx); } +static const enum batadv_nl_attrs clients_mandatory[] = { + BATADV_ATTR_TT_FLAGS, +}; + +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; + + opts = 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_netlink_policy)) + return NL_OK; + + if (batadv_nl_missing_attrs(attrs, clients_mandatory, + 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; + + if (flags & BATADV_TT_CLIENT_WIFI) + opts->wifi++; + + opts->total++; + + return NL_OK; +} + static struct json_object * get_clients(void) { - size_t total = 0, wifi = 0, wifi24 = 0, wifi5 = 0; + size_t wifi24 = 0, wifi5 = 0; + struct clients_netlink_opts opts = { + .total = 0, + .wifi = 0, + .query_opts = { + .err = 0, + }, + }; - FILE *f = fopen("/sys/kernel/debug/batman_adv/bat0/transtable_local", "r"); - if (!f) - return NULL; - - char *line = NULL; - size_t len = 0; - - while (getline(&line, &len, f) >= 0) { - char flags[16]; - - if (sscanf(line, " * %*[^[] [%15[^]]]", flags) != 1) - continue; - - if (strchr(flags, 'P')) - continue; - - total++; - - if (strchr(flags, 'W')) - wifi++; - } - - free(line); - fclose(f); + batadv_nl_query_common("bat0", BATADV_CMD_GET_TRANSTABLE_LOCAL, + parse_clients_list_netlink_cb, NLM_F_DUMP, + &opts.query_opts); count_stations(&wifi24, &wifi5); struct json_object *ret = json_object_new_object(); - json_object_object_add(ret, "total", json_object_new_int(total)); - json_object_object_add(ret, "wifi", json_object_new_int(wifi)); + json_object_object_add(ret, "total", json_object_new_int(opts.total)); + json_object_object_add(ret, "wifi", json_object_new_int(opts.wifi)); json_object_object_add(ret, "wifi24", json_object_new_int(wifi24)); json_object_object_add(ret, "wifi5", json_object_new_int(wifi5)); return ret; @@ -492,49 +580,104 @@ static struct json_object * ifnames2addrs(struct json_object *interfaces) { return ret; } -static struct json_object * get_batadv(void) { - FILE *f = fopen("/sys/kernel/debug/batman_adv/bat0/originators", "r"); - if (!f) - return NULL; +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, +}; - char *line = NULL; - size_t len = 0; +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]; - struct json_object *interfaces = json_object_new_object(); + opts = container_of(query_opts, struct neigh_netlink_opts, query_opts); - while (getline(&line, &len, f) >= 0) { - char mac1[18], mac2[18]; - /* IF_NAMESIZE would be enough, but adding 1 here is simpler than subtracting 1 in the format string */ - char ifname[IF_NAMESIZE+1]; - double lastseen; - int tq; + if (!genlmsg_valid_hdr(nlh, 0)) + return NL_OK; - if (sscanf(line, - "%17[0-9a-fA-F:] %lfs ( %i ) %17[0-9a-fA-F:] [ %"STRINGIFY(IF_NAMESIZE)"[^]] ]", - mac1, &lastseen, &tq, mac2, ifname) != 5) - continue; + ghdr = nlmsg_data(nlh); - if (strcmp(mac1, mac2)) - continue; + if (ghdr->cmd != BATADV_CMD_GET_ORIGINATORS) + return NL_OK; - struct json_object *interface; - if (!json_object_object_get_ex(interfaces, ifname, &interface)) { - interface = json_object_new_object(); - json_object_object_add(interfaces, ifname, interface); - } + if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0), + genlmsg_len(ghdr), batadv_netlink_policy)) + return NL_OK; - struct json_object *obj = json_object_new_object(); - json_object_object_add(obj, "tq", json_object_new_int(tq)); - struct json_object *jso = json_object_new_double(lastseen); - json_object_set_serializer(jso, json_object_double_to_json_string, "%.3f", NULL); - json_object_object_add(obj, "lastseen", jso); - json_object_object_add(interface, mac1, obj); + if (batadv_nl_missing_attrs(attrs, parse_orig_list_mandatory, + ARRAY_SIZE(parse_orig_list_mandatory))) + return NL_OK; + + if (!attrs[BATADV_ATTR_FLAG_BEST]) + 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); } - fclose(f); - free(line); + 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(interface, mac1, obj); - return ifnames2addrs(interfaces); + 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_nl_query_common("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 * get_wifi_neighbours(const char *ifname) {