C++11 port

Makefile

@@ -0,0 +1,21 @@
+all : gmain cmain
+
+clean :
+	rm -f gmain
+	rm -f cmain
+
+grun : gmain
+	./gmain
+
+crun : cmain
+	./cmain
+
+
+gmain : main.cpp
+	g++ -Wall -O2 -std=c++11 -pthread -lrt -o gmain main.cpp
+
+cmain : main.cpp
+	clang++ -Wall -O2 -std=c++11 -stdlib=libc++ -pthread -lrt -o cmain main.cpp
+
+
+.PHONY : all clean run

README.md

@@ -10,13 +10,31 @@ Publicly available documents already discuss exfiltration from secured systems u
 
 How to Use It
 ------------------
-Compile the problem using:
+You need a decent C++11 implementation(GCC or Clang)
+Compile the program by make:
 
-    gcc main.c -Wall -O2 -o main
+If you have GCC:
 
-And run it on an Apple MacBook Air (13-inch, Early 2015):
+    make gmain
+
+If you have Clang:
+
+    make cmain
+
+If you have both:
+
+    make
+
+And run it on your computer:
+
+For GCC:
+
+    make grun
+
+For Clang:
+
+    make crun
 
-    ./main
 
 Then use a Sony STR-K670P radio receiver with the included antenna and tune it to 1580 kHz on AM.
 

main.c

@@ -1,78 +0,0 @@
-// SYSTEM BUS RADIO
-// https://github.com/fulldecent/system-bus-radio
-// Copyright 2016 William Entriken
-
-#include <stdio.h>
-#include <emmintrin.h>
-#include <mach/mach_traps.h>
-#include <mach/mach_time.h>
-#include <math.h>
-
-__m128i reg;
-__m128i reg_zero;
-__m128i reg_one;
-mach_port_t clock_port;
-mach_timespec_t remain;
-
-static inline void square_am_signal(float time, float frequency) {
-    printf("Playing / %0.3f seconds / %4.0f Hz\n", time, frequency);
-    uint64_t period = NSEC_PER_SEC / frequency;
-
-    uint64_t start = mach_absolute_time();
-    uint64_t end = start + time * NSEC_PER_SEC;
-
-    while (mach_absolute_time() < end) {
-        uint64_t mid = start + period / 2;
-        uint64_t reset = start + period;
-        while (mach_absolute_time() < mid) {
-            _mm_stream_si128(&reg, reg_one);
-            _mm_stream_si128(&reg, reg_zero);
-        }
-        clock_sleep_trap(clock_port, TIME_ABSOLUTE, reset / NSEC_PER_SEC, reset % NSEC_PER_SEC, &remain);
-        start = reset;
-    }
-}
-
-int main()
-{
-    mach_timebase_info_data_t theTimeBaseInfo;
-    mach_timebase_info(&theTimeBaseInfo);
-    puts("TESTING TIME BASE: the following should be 1 / 1");
-    printf("  Mach base: %u / %u nanoseconds\n\n", theTimeBaseInfo.numer, theTimeBaseInfo.denom);
-
-    uint64_t start = mach_absolute_time();
-    uint64_t end = mach_absolute_time();
-    printf("TESTING TIME TO EXECUTE mach_absolute_time()\n  Result: %lld nanoseconds\n\n", end - start);
-
-    reg_zero = _mm_set_epi32(0, 0, 0, 0);
-    reg_one = _mm_set_epi32(-1, -1, -1, -1);
-
-    while (1) {
-        square_am_signal(0.400, 2673);
-        square_am_signal(0.400, 2349);
-        square_am_signal(0.400, 2093);
-        square_am_signal(0.400, 2349);
-        square_am_signal(0.400, 2673);
-        square_am_signal(0.400, 2673);
-        square_am_signal(0.790, 2673);
-        square_am_signal(0.400, 2349);
-        square_am_signal(0.400, 2349);
-        square_am_signal(0.790, 2349);
-        square_am_signal(0.400, 2673);
-        square_am_signal(0.400, 3136);
-        square_am_signal(0.790, 3136);
-        square_am_signal(0.400, 2673);
-        square_am_signal(0.400, 2349);
-        square_am_signal(0.400, 2093);
-        square_am_signal(0.400, 2349);
-        square_am_signal(0.400, 2673);
-        square_am_signal(0.400, 2673);
-        square_am_signal(0.400, 2673);
-        square_am_signal(0.400, 2673);
-        square_am_signal(0.400, 2349);
-        square_am_signal(0.400, 2349);
-        square_am_signal(0.400, 2673);
-        square_am_signal(0.400, 2349);
-        square_am_signal(0.790, 2093);
-    }
-}

main.cpp

@@ -0,0 +1,73 @@
+// SYSTEM BUS RADIO
+// https://github.com/fulldecent/system-bus-radio
+// Copyright 2016 William Entriken
+// C++11 port by Ryou Ezoe
+
+#include <iostream>
+#include <iomanip>
+#include <chrono>
+#include <thread>
+#include <atomic>
+
+void square_am_signal(float time, float frequency)
+{
+    using namespace std::chrono ;
+    
+    std::cout << "Playing / " << time << " seconds / " << frequency << " Hz\n" ;
+
+    seconds const sec{1} ;
+    nanoseconds const nsec{ sec } ;
+    using rep = nanoseconds::rep ;
+    auto nsec_per_sec = nsec.count() ;
+
+    nanoseconds const period( static_cast<rep>( nsec_per_sec / frequency) ) ;
+
+    auto start = high_resolution_clock::now() ;
+    auto const end = start + nanoseconds( static_cast<rep>(time * nsec_per_sec) ) ;
+
+    while (high_resolution_clock::now() < end)
+    {
+        auto mid = start + period / 2 ;
+        auto reset = start + period ;
+        while (high_resolution_clock::now() < mid)
+        {
+            std::atomic<unsigned> x{0} ;
+            ++x ; 
+        }
+        std::this_thread::sleep_until( reset ) ;
+        start = reset;
+    }
+}
+
+int main()
+{
+    while (1)
+    {
+        square_am_signal(0.400, 2673);
+        square_am_signal(0.400, 2349);
+        square_am_signal(0.400, 2093);
+        square_am_signal(0.400, 2349);
+        square_am_signal(0.400, 2673);
+        square_am_signal(0.400, 2673);
+        square_am_signal(0.790, 2673);
+        square_am_signal(0.400, 2349);
+        square_am_signal(0.400, 2349);
+        square_am_signal(0.790, 2349);
+        square_am_signal(0.400, 2673);
+        square_am_signal(0.400, 3136);
+        square_am_signal(0.790, 3136);
+        square_am_signal(0.400, 2673);
+        square_am_signal(0.400, 2349);
+        square_am_signal(0.400, 2093);
+        square_am_signal(0.400, 2349);
+        square_am_signal(0.400, 2673);
+        square_am_signal(0.400, 2673);
+        square_am_signal(0.400, 2673);
+        square_am_signal(0.400, 2673);
+        square_am_signal(0.400, 2349);
+        square_am_signal(0.400, 2349);
+        square_am_signal(0.400, 2673);
+        square_am_signal(0.400, 2349);
+        square_am_signal(0.790, 2093);
+    }
+}