static int control_socket = -1;
static struct event control_event;
static splay_tree_t *control_socket_tree;
-extern char *controlfilename;
+extern char *controlsocketname;
static void handle_control_data(int fd, short events, void *event) {
char buf[MAXBUFSIZE];
size_t inlen;
+ char *p;
inlen = read(fd, buf, sizeof buf);
- if(inlen <= 0) {
- logger(LOG_DEBUG, _("Closing control socket"));
- event_del(event);
- splay_delete(control_socket_tree, event);
- close(fd);
+ if(inlen <= 0)
+ goto close;
+
+ p = memchr(buf, '\n', sizeof buf);
+ if(!p || p - buf + 1 != inlen)
+ goto malformed;
+
+ *p = 0;
+
+ if(!strcasecmp(buf, "stop")) {
+ logger(LOG_NOTICE, _("Got stop command"));
+ event_loopexit(NULL);
+ return;
}
+
+malformed:
+ logger(LOG_DEBUG, _("Malformed control command received"));
+
+close:
+ logger(LOG_DEBUG, _("Closing control socket"));
+ event_del(event);
+ splay_delete(control_socket_tree, event);
+ close(fd);
}
static void handle_new_control_socket(int fd, short events, void *data) {
return a < b ? -1 : a > b ? 1 : 0;
}
-void init_control() {
+bool init_control() {
+ int result;
struct sockaddr_un addr;
- control_socket_tree = splay_alloc_tree((splay_compare_t)control_compare, (splay_action_t)free);
-
- if(strlen(controlfilename) >= sizeof addr.sun_path) {
+ if(strlen(controlsocketname) >= sizeof addr.sun_path) {
logger(LOG_ERR, _("Control socket filename too long!"));
- return;
+ return false;
}
memset(&addr, 0, sizeof addr);
addr.sun_family = AF_UNIX;
- strncpy(addr.sun_path, controlfilename, sizeof addr.sun_path - 1);
+ strncpy(addr.sun_path, controlsocketname, sizeof addr.sun_path - 1);
control_socket = socket(PF_UNIX, SOCK_STREAM, 0);
if(control_socket < 0) {
logger(LOG_ERR, _("Creating UNIX socket failed: %s"), strerror(errno));
- return;
+ return false;
}
- unlink(controlfilename);
- if(bind(control_socket, (struct sockaddr *)&addr, sizeof addr) < 0) {
- logger(LOG_ERR, _("Can't bind to %s: %s\n"), controlfilename, strerror(errno));
+ //unlink(controlsocketname);
+ result = bind(control_socket, (struct sockaddr *)&addr, sizeof addr);
+
+ if(result < 0 && errno == EADDRINUSE) {
+ result = connect(control_socket, (struct sockaddr *)&addr, sizeof addr);
+ if(result < 0) {
+ logger(LOG_WARNING, _("Removing old control socket."));
+ unlink(controlsocketname);
+ result = bind(control_socket, (struct sockaddr *)&addr, sizeof addr);
+ } else {
+ close(control_socket);
+ if(netname)
+ logger(LOG_ERR, _("Another tincd is already running for net `%s'."), netname);
+ else
+ logger(LOG_ERR, _("Another tincd is already running."));
+ return false;
+ }
+ }
+
+ if(result < 0) {
+ logger(LOG_ERR, _("Can't bind to %s: %s\n"), controlsocketname, strerror(errno));
close(control_socket);
- return;
+ return false;
}
if(listen(control_socket, 3) < 0) {
- logger(LOG_ERR, _("Can't listen on %s: %s\n"), controlfilename, strerror(errno));
+ logger(LOG_ERR, _("Can't listen on %s: %s\n"), controlsocketname, strerror(errno));
close(control_socket);
- return;
+ return false;
}
+ control_socket_tree = splay_alloc_tree((splay_compare_t)control_compare, (splay_action_t)free);
+
event_set(&control_event, control_socket, EV_READ | EV_PERSIST, handle_new_control_socket, NULL);
event_add(&control_event, NULL);
+
+ return true;
}
void exit_control() {
- if(control_socket >= 0) {
- event_del(&control_event);
- close(control_socket);
- }
+ event_del(&control_event);
+ close(control_socket);
+ unlink(controlsocketname);
}