Merge pull request #2 from marcplustwo/airplane_mode

distinguish between wifi disabled and disconnected

include/modules/network.hpp

@@ -9,6 +9,7 @@
 #include <netlink/genl/genl.h>
 #include <netlink/netlink.h>
 #include <sys/epoll.h>
+#include <linux/rfkill.h>
 #include "ALabel.hpp"
 #include "util/sleeper_thread.hpp"
 
@@ -45,6 +46,7 @@ class Network : public ALabel {
   const std::string getNetworkState() const;
   void              clearIface();
   bool              wildcardMatch(const std::string& pattern, const std::string& text) const;
+  bool				isDisabled(enum rfkill_type rfkill_type) const;
 
   int                ifid_;
   sa_family_t        family_;

src/modules/network.cpp

@@ -5,6 +5,11 @@
 #include <cassert>
 #include "util/format.hpp"
 
+#include <unistd.h>
+//#include <stdlib.h>
+#include <cstring>
+#include <linux/rfkill.h>
+#include <fcntl.h>
 
 namespace {
 
@@ -222,12 +227,59 @@ void waybar::modules::Network::worker() {
 }
 
 const std::string waybar::modules::Network::getNetworkState() const {
-  if (ifid_ == -1) return "disconnected";
+  if (ifid_ == -1) {
+		if (isDisabled(RFKILL_TYPE_WLAN))
+			return "disabled";
+		return "disconnected";
+	}
   if (ipaddr_.empty()) return "linked";
   if (essid_.empty()) return "ethernet";
   return "wifi";
 }
 
+bool waybar::modules::Network::isDisabled(enum rfkill_type rfkill_type) const {
+  struct rfkill_event event;
+  ssize_t len;
+  int fd;
+  int ret;
+  ret = false;
+
+  fd = open("/dev/rfkill", O_RDONLY);
+  if (fd < 0) {
+    perror("Can't open RFKILL control device");
+    return false;
+  }
+
+  if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0) {
+    perror("Can't set RFKILL control device to non-blocking");
+    close(fd);
+    return false;
+  }
+
+  while(true) {
+    len = read(fd, &event, sizeof(event));
+    if (len < 0) {
+      if (errno == EAGAIN)
+        return 1;
+      perror("Reading of RFKILL events failed");
+      return false;
+    }
+
+    if (len != RFKILL_EVENT_SIZE_V1) {
+      fprintf(stderr, "Wrong size of RFKILL event\n");
+      return false;
+    }
+
+    if(event.type == rfkill_type) {
+      ret = event.soft || event.hard;
+      break;
+    }
+  }
+
+  close(fd);
+  return ret;
+}
+
 auto waybar::modules::Network::update() -> void {
   std::lock_guard<std::mutex> lock(mutex_);
   std::string                 tooltip_format;