#if defined(__APPLE__) || defined(__unix) && !defined(__linux)
#include <net/route.h>
+#elif defined(__linux)
+#include <asm/types.h>
+#include <linux/netlink.h>
+#include <linux/rtnetlink.h>
#endif
#include "meshlink_internal.h"
return NULL;
}
-#ifdef RTM_NEWADDR
+#if defined(__linux)
+static void netlink_io_handler(event_loop_t *loop, void *data, int flags) {
+ (void)flags;
+ static time_t prev_update;
+ meshlink_handle_t *mesh = data;
+
+ struct {
+ struct nlmsghdr nlm;
+ char data[2048];
+ } msg;
+
+ while(true) {
+ ssize_t result = recv(mesh->pfroute_io.fd, &msg, sizeof(msg), MSG_DONTWAIT);
+
+ if(result <= 0) {
+ if(result == 0 || errno == EAGAIN || errno == EINTR) {
+ break;
+ }
+
+ logger(mesh, MESHLINK_ERROR, "Reading from Netlink socket failed: %s\n", strerror(errno));
+ io_set(loop, &mesh->pfroute_io, 0);
+ }
+
+ if((size_t)result < sizeof(msg.nlm)) {
+ logger(mesh, MESHLINK_ERROR, "Invalid Netlink message\n");
+ break;
+ }
+
+ switch(msg.nlm.nlmsg_type) {
+ case RTM_NEWLINK:
+ case RTM_DELLINK:
+ case RTM_NEWADDR:
+ case RTM_DELADDR:
+ if(loop->now.tv_sec > prev_update + 5) {
+ prev_update = loop->now.tv_sec;
+ handle_network_change(mesh, 1);
+ }
+
+ break;
+
+ default:
+ break;
+ }
+ }
+}
+#elif defined(RTM_NEWADDR)
static void pfroute_io_handler(event_loop_t *loop, void *data, int flags) {
(void)flags;
static time_t prev_update;
mesh->discovery_threadstarted = true;
-#ifdef RTM_NEWADDR
+#if defined(__linux)
+ int sock = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE);
+
+ if(sock != -1) {
+ struct sockaddr_nl sa;
+ memset(&sa, 0, sizeof(sa));
+ sa.nl_family = AF_NETLINK;
+ sa.nl_groups = RTMGRP_LINK | RTMGRP_IPV4_IFADDR | RTMGRP_IPV6_IFADDR;
+
+ if(bind(sock, (struct sockaddr *)&sa, sizeof(sa)) != -1) {
+ io_add(&mesh->loop, &mesh->pfroute_io, netlink_io_handler, mesh, sock, IO_READ);
+ } else {
+ logger(mesh, MESHLINK_WARNING, "Could not bind AF_NETLINK socket: %s", strerror(errno));
+ }
+ } else {
+ logger(mesh, MESHLINK_WARNING, "Could not open AF_NETLINK socket: %s", strerror(errno));
+ }
+
+#elif defined(RTM_NEWADDR)
int sock = socket(PF_ROUTE, SOCK_RAW, AF_UNSPEC);
if(sock != -1) {
assert(mesh);
-#ifdef RTM_NEWADDR
-
if(mesh->pfroute_io.cb) {
close(mesh->pfroute_io.fd);
io_del(&mesh->loop, &mesh->pfroute_io);
}
-#endif
-
// Shut down
if(mesh->catta_poll) {
catta_simple_poll_quit(mesh->catta_poll);