}
+static void hostapd_global_ctrl_iface_receive(int sock, void *eloop_ctx,
+ void *sock_ctx)
+{
+ char buf[256];
+ int res;
+ struct sockaddr_un from;
+ socklen_t fromlen = sizeof(from);
+ char reply[24];
+ int reply_len;
+
+ res = recvfrom(sock, buf, sizeof(buf) - 1, 0,
+ (struct sockaddr *) &from, &fromlen);
+ if (res < 0) {
+ perror("recvfrom(ctrl_iface)");
+ return;
+ }
+ buf[res] = '\0';
+
+ os_memcpy(reply, "OK\n", 3);
+ reply_len = 3;
+
+ if (os_strcmp(buf, "PING") == 0) {
+ os_memcpy(reply, "PONG\n", 5);
+ reply_len = 5;
+ } else {
+ wpa_printf(MSG_DEBUG, "Unrecognized global ctrl_iface command "
+ "ignored");
+ reply_len = -1;
+ }
+
+ if (reply_len < 0) {
+ os_memcpy(reply, "FAIL\n", 5);
+ reply_len = 5;
+ }
+
+ sendto(sock, reply, reply_len, 0, (struct sockaddr *) &from, fromlen);
+}
+
+
+static char * hostapd_global_ctrl_iface_path(struct hapd_interfaces *interface)
+{
+ char *buf;
+ size_t len;
+
+ if (interface->global_iface_path == NULL)
+ return NULL;
+
+ len = os_strlen(interface->global_iface_path) +
+ os_strlen(interface->global_iface_name) + 2;
+ buf = os_malloc(len);
+ if (buf == NULL)
+ return NULL;
+
+ os_snprintf(buf, len, "%s/%s", interface->global_iface_path,
+ interface->global_iface_name);
+ buf[len - 1] = '\0';
+ return buf;
+}
+
+
+int hostapd_global_ctrl_iface_init(struct hapd_interfaces *interface)
+{
+ struct sockaddr_un addr;
+ int s = -1;
+ char *fname = NULL;
+
+ if (interface->global_iface_path == NULL) {
+ wpa_printf(MSG_DEBUG, "ctrl_iface not configured!");
+ return 0;
+ }
+
+ if (mkdir(interface->global_iface_path, S_IRWXU | S_IRWXG) < 0) {
+ if (errno == EEXIST) {
+ wpa_printf(MSG_DEBUG, "Using existing control "
+ "interface directory.");
+ } else {
+ perror("mkdir[ctrl_interface]");
+ goto fail;
+ }
+ }
+
+ if (os_strlen(interface->global_iface_path) + 1 +
+ os_strlen(interface->global_iface_name) >= sizeof(addr.sun_path))
+ goto fail;
+
+ s = socket(PF_UNIX, SOCK_DGRAM, 0);
+ if (s < 0) {
+ perror("socket(PF_UNIX)");
+ goto fail;
+ }
+
+ os_memset(&addr, 0, sizeof(addr));
+#ifdef __FreeBSD__
+ addr.sun_len = sizeof(addr);
+#endif /* __FreeBSD__ */
+ addr.sun_family = AF_UNIX;
+ fname = hostapd_global_ctrl_iface_path(interface);
+ if (fname == NULL)
+ goto fail;
+ os_strlcpy(addr.sun_path, fname, sizeof(addr.sun_path));
+ if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ wpa_printf(MSG_DEBUG, "ctrl_iface bind(PF_UNIX) failed: %s",
+ strerror(errno));
+ if (connect(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ wpa_printf(MSG_DEBUG, "ctrl_iface exists, but does not"
+ " allow connections - assuming it was left"
+ "over from forced program termination");
+ if (unlink(fname) < 0) {
+ perror("unlink[ctrl_iface]");
+ wpa_printf(MSG_ERROR, "Could not unlink "
+ "existing ctrl_iface socket '%s'",
+ fname);
+ goto fail;
+ }
+ if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) <
+ 0) {
+ perror("bind(PF_UNIX)");
+ goto fail;
+ }
+ wpa_printf(MSG_DEBUG, "Successfully replaced leftover "
+ "ctrl_iface socket '%s'", fname);
+ } else {
+ wpa_printf(MSG_INFO, "ctrl_iface exists and seems to "
+ "be in use - cannot override it");
+ wpa_printf(MSG_INFO, "Delete '%s' manually if it is "
+ "not used anymore", fname);
+ os_free(fname);
+ fname = NULL;
+ goto fail;
+ }
+ }
+
+ if (chmod(fname, S_IRWXU | S_IRWXG) < 0) {
+ perror("chmod[ctrl_interface/ifname]");
+ goto fail;
+ }
+ os_free(fname);
+
+ interface->global_ctrl_sock = s;
+ eloop_register_read_sock(s, hostapd_global_ctrl_iface_receive,
+ interface, NULL);
+
+ return 0;
+
+fail:
+ if (s >= 0)
+ close(s);
+ if (fname) {
+ unlink(fname);
+ os_free(fname);
+ }
+ return -1;
+}
+
+
+void hostapd_global_ctrl_iface_deinit(struct hapd_interfaces *interfaces)
+{
+ char *fname = NULL;
+
+ if (interfaces->global_ctrl_sock > -1) {
+ eloop_unregister_read_sock(interfaces->global_ctrl_sock);
+ close(interfaces->global_ctrl_sock);
+ interfaces->global_ctrl_sock = -1;
+ fname = hostapd_global_ctrl_iface_path(interfaces);
+ if (fname) {
+ unlink(fname);
+ os_free(fname);
+ }
+
+ if (interfaces->global_iface_path &&
+ rmdir(interfaces->global_iface_path) < 0) {
+ if (errno == ENOTEMPTY) {
+ wpa_printf(MSG_DEBUG, "Control interface "
+ "directory not empty - leaving it "
+ "behind");
+ } else {
+ perror("rmdir[ctrl_interface]");
+ }
+ }
+ os_free(interfaces->global_iface_path);
+ interfaces->global_iface_path = NULL;
+ }
+}
+
+
static void hostapd_ctrl_iface_send(struct hostapd_data *hapd, int level,
const char *buf, size_t len)
{
fprintf(stderr,
"\n"
"usage: hostapd [-hdBKtv] [-P <PID file>] [-e <entropy file>] "
- "<configuration file(s)>\n"
+ "\\\n"
+ " [-g <global ctrl_iface>] <configuration file(s)>\n"
"\n"
"options:\n"
" -h show this usage\n"
" -d show more debug messages (-dd for even more)\n"
" -B run daemon in the background\n"
" -e entropy file\n"
+ " -g global control interface path\n"
" -P PID file\n"
" -K include key data in debug messages\n"
#ifdef CONFIG_DEBUG_FILE
}
+static int hostapd_get_global_ctrl_iface(struct hapd_interfaces *interfaces,
+ const char *path)
+{
+ char *pos;
+ os_free(interfaces->global_iface_path);
+ interfaces->global_iface_path = os_strdup(path);
+ if (interfaces->global_iface_path == NULL)
+ return -1;
+ pos = os_strrchr(interfaces->global_iface_path, '/');
+ if (pos == NULL) {
+ os_free(interfaces->global_iface_path);
+ interfaces->global_iface_path = NULL;
+ return -1;
+ }
+
+ *pos = '\0';
+ interfaces->global_iface_name = pos + 1;
+
+ return 0;
+}
+
+
int main(int argc, char *argv[])
{
struct hapd_interfaces interfaces;
interfaces.for_each_interface = hostapd_for_each_interface;
interfaces.ctrl_iface_init = hostapd_ctrl_iface_init;
interfaces.ctrl_iface_deinit = hostapd_ctrl_iface_deinit;
+ interfaces.global_iface_path = NULL;
+ interfaces.global_iface_name = NULL;
+ interfaces.global_ctrl_sock = -1;
for (;;) {
- c = getopt(argc, argv, "Bde:f:hKP:tv");
+ c = getopt(argc, argv, "Bde:f:hKP:tvg:");
if (c < 0)
break;
switch (c) {
show_version();
exit(1);
break;
+ case 'g':
+ hostapd_get_global_ctrl_iface(&interfaces, optarg);
+ break;
default:
usage();
goto out;
}
+ hostapd_global_ctrl_iface_init(&interfaces);
+
if (hostapd_global_run(&interfaces, daemonize, pid_file))
goto out;
ret = 0;
out:
+ hostapd_global_ctrl_iface_deinit(&interfaces);
/* Deinitialize all interfaces */
for (i = 0; i < interfaces.count; i++)
hostapd_interface_deinit_free(interfaces.iface[i]);
projects / thirdparty / hostap.git / commitdiff
