Wifi (brndnmtthws#660)

* Work for #17 : Now we have ssid

* Since we are using Objective-C++ NSStrings, we need to link to Foundation.framework, too!

* If interface is UP use the interface SSID; otherwise "off/any" following the Linux implementation.
Add more

* More

* cleanup

cmake/ConkyPlatformChecks.cmake

@@ -139,7 +139,9 @@ endif(BUILD_NCURSES AND OS_DARWIN)
 
 if(BUILD_WLAN AND OS_DARWIN)
   find_library(CW CoreWLAN)
+  find_library(NS Foundation)
   set(conky_libs ${conky_libs} ${CW})
+  set(conky_libs ${conky_libs} ${NS})
 endif(BUILD_WLAN AND OS_DARWIN)
 
 if(OS_DARWIN AND BUILD_IPGFREQ)

src/darwin.mm

@@ -652,10 +652,68 @@ int update_meminfo() {
 #ifdef BUILD_WLAN
 
 void update_wlan_stats(struct net_stat *ns) {
+  CWWiFiClient *client = [CWWiFiClient sharedWiFiClient];
+  CWInterface *interface = [client interfaceWithName:[NSString stringWithUTF8String:ns->dev]];
 
+  if (!interface)
+    return;
+
+  const char *essid = (ns->up) ? [interface ssid].UTF8String : "off/any";
+  const char *freq = "Unknown";
+  const char *bitrate = [NSString stringWithFormat:@"%f", [interface transmitRate]].UTF8String;
+  const char *mode = "Unknown";
+  const char *ap = [interface hardwareAddress].UTF8String;
+
+  if (essid == nullptr || bitrate == nullptr || ap == nullptr)
+    return;
+
+  /*
+   * Freq
+   */
+  switch ([interface wlanChannel].channelBand) {
+    case kCWChannelBand2GHz:
+      freq = "2 GHz";
+      break;
+    case kCWChannelBand5GHz:
+      freq = "5 GHz";
+      break;
+    case kCWChannelBandUnknown:
+    default:
+      break;
+  }
+
+  /*
+   * Mode
+   */
+  switch ([interface interfaceMode]) {
+    case kCWInterfaceModeStation:
+      mode = "Managed";
+      break;
+    case kCWInterfaceModeIBSS:
+      mode = "Ad-Hoc";
+      break;
+    case kCWInterfaceModeHostAP:
+      mode = "Master";
+      break;
+    case kCWInterfaceModeNone:
+    default:
+      break;
+  }
+
+  /*
+   * Setup
+   */
+  memcpy(ns->essid, essid, sizeof(char)*strlen(essid));
+  ns->channel = interface.wlanChannel.channelNumber;
+  memcpy(ns->freq, freq, sizeof(char)*strlen(freq));
+  memcpy(ns->bitrate, bitrate, sizeof(char)*strlen(bitrate));
+  memcpy(ns->mode, mode, sizeof(char)*strlen(mode));
+  ns->link_qual = 0;
+  ns->link_qual_max = 0;
+  memcpy(ns->ap, ap, sizeof(char)*strlen(ap));
 }
 
-#endif
+#endif /* BUILD_WLAN */
 
 int update_net_stats() {
   struct net_stat *ns;