worked on wifi-scanner for linux

new time-grouping for vap grouper
adjusted test-cases
minor changes/fixes/improvements

sensors/radio/scan/WiFiRAW.h

@@ -0,0 +1,47 @@
+#ifndef INDOOR_WIFIRAW_H
+#define INDOOR_WIFIRAW_H
+
+#include <iostream>
+
+/**
+ * parse raw binary wifi packets as defined within the standard
+ */
+class WiFiRAW {
+
+public:
+
+	enum Tags {
+		TAG_SSID = 0x00
+	};
+
+	struct TaggedParams {
+		std::string ssid;
+	};
+
+	/** parsed tagged params within wifi packets: [tag][len][len-bytes][tag][len][len-bytes]... */
+	static TaggedParams parseTaggedParams(const uint8_t* data, const size_t len) {
+
+		TaggedParams res;
+
+		int pos = 0;
+		while(pos < len) {
+
+			const int tag = data[pos+0];	// the tag-ID
+			const int len = data[pos+1];	// the lenght of the following data
+
+			switch(tag) {
+				case TAG_SSID:		res.ssid = std::string( (const char*) &(data[pos+2]), len); break;
+			}
+
+			// position at the start of the next tag
+			pos += 1 + 1 + len;
+
+		}
+
+		return res;
+
+	}
+
+};
+
+#endif // INDOOR_WIFIRAW_H