- Restored the 'reset' command

- Linux client: detects offline mode and blocks commands which need a connected Proxmark3 (still do to on Windows)

linux/gui.c

@@ -10,6 +10,7 @@ int GraphBuffer[MAX_GRAPH_TRACE_LEN];
 int GraphTraceLen;
 double CursorScaleFactor;
 int CommandFinished;
+int offline;
 
 static char *logfilename = "proxmark3.log";
 

linux/proxgui.h

@@ -14,6 +14,7 @@ extern int GraphBuffer[MAX_GRAPH_TRACE_LEN];
 extern int GraphTraceLen;
 extern double CursorScaleFactor;
 extern int CommandFinished;
+extern int offline;
 
 #ifdef __cplusplus
 }

linux/proxmark3.c

@@ -86,8 +86,10 @@ int main(int argc, char **argv)
 	if (!(devh = OpenProxmark(1))) {
 		fprintf(stderr,"PROXMARK3: NOT FOUND!\n");
 		marg.usb_present = 0;
+		offline = 1;
 	} else {
 		marg.usb_present = 1;
+		offline = 0;
 	}
 
 	pthread_create(&main_loop_t, NULL, &main_loop, &marg);