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salamandra.py
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salamandra.py
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#!/usr/bin/python3
# Salamandra
# Free-software SDR-based Tool that reads the output of rtl_power to detect and locate the presence of micropones transmitting
# Author: Sebastian Garcia eldraco@gmail.com, sebastian.garcia@agents.fel.cvut.cz
# Detection techniques
# 1- Detect a peak in the transmiting frequencies. Power over a threshold.
import argparse
import sys
import os
from datetime import datetime
from subprocess import Popen
from subprocess import PIPE
import curses
import curses.panel
import time
import select
import pygame.mixer
default_threshold = 10.8
version = '0.6alpha'
def process_line(line, ui, threshold, sound):
"""
Process one line of input
"""
ui.update_status('Reading')
try:
if sys.version_info < (3, 0):
line.split(',')
else:
line = line.decode().split(',')
time = line[0]
hour = line[1]
minfreq = line[2]
maxfreq = line[3]
step = line[4]
samples = line[5]
except IndexError:
return False
if args.verbose > 2:
print('Time: {} MinFreq: {}, Maxfreq:{}, step={}'.format(time + ' ' + hour, minfreq, maxfreq, step))
# Analyze the dbm values
dbm_threshold = threshold
dbm_line = line[6:]
max_value = float('-inf')
max_pos = float('-inf')
max_values_dict = {}
index = 0
detection_dict = {}
while index < len(dbm_line):
value = float(dbm_line[index])
if value != float('-inf') and value > max_value:
max_value = float(dbm_line[index])
max_pos = index
if value >= dbm_threshold:
detection_dict[index] = value
index += 1
# Largest detection
detection_freq = float(minfreq) + (float(step) * max_pos)
detection_value = max_value
if args.verbose > 2:
print('\tMax value in this line: {}, at freq {}'.format(detection_value, detection_freq))
# Were there any other detections?
sorted_detection_dict = sorted(detection_dict, key=detection_dict.get, reverse=True)
# When there is a detection?
if not args.search:
# 1 When at least 1 frequency is over the threshold
#if detection_value >= dbm_threshold:
# line = '\t\tDetection in freq: {} with Dbm {}. Time: {}'.format(detection_freq, max_value, time + ' ' + hour)
# 2 When more than threshold freqencies are over the threshold
if len(detection_dict) >= args.detfreqthreshold:
textline = '\t\tDetection because {} freq were over the threshold: {}. Time: {}'.format(len(detection_dict), dbm_threshold, time + ' ' + hour)
ui.update_histogram(textline)
if sound:
pygame.mixer.music.play()
else:
if args.verbose > 1:
textline = '\t\tNo detection'
ui.update_histogram(textline)
# This is the default mode of operation. The search with the histogram
elif args.search:
# Get the freqs in the detection
freq_line = ''
temp_uniq_dict = {}
top_freq = ''
for index in detection_dict:
# In mhz
detection_freq = (float(minfreq) + (float(step) * index)) / float(1000000)
try:
temp = temp_uniq_dict[detection_freq]
temp_uniq_dict[detection_freq] += 1
except KeyError:
temp_uniq_dict[detection_freq] = 1
detect_uniq_dict = sorted(temp_uniq_dict, key=temp_uniq_dict.get)
top_freq = str(detect_uniq_dict[0])
# Here we print the histogram
line = '{:19} ({:>3}) [{:>6.6}]: {:160.160}'.format(str(datetime.now())[:-7], str(len(detection_dict)), top_freq, "#" * len(detection_dict))
# Print the lines
if args.verbose == 0 and len(detection_dict) > 0:
ui.update_histogram(line)
ui.update_status('DETECTION')
if sound:
pygame.mixer.music.play()
elif args.verbose == 1 and len(detection_dict) > 0:
ui.update_histogram(line)
#print('\t[' + freq_line + ']')
if sound:
pygame.mixer.music.play()
elif args.verbose > 1:
# Print even if there is no detection
ui.update_histogram(line)
# Print even if there is no detection, plus freqs
#if freq_line:
# print('\t[' + freq_line + ']')
if len(detection_dict) > 0 and sound:
pygame.mixer.music.play()
def process_file():
"""
Reades a CSV file created by rtl_power and analysis it offline
"""
if args.verbose > 0:
print('Opening file {}'.format(args.file))
try:
f = open(args.file)
return f
except IOError:
print('No such file.')
sys.exit(-1)
def process_stdin():
"""
Executes the rtl_power tool and gets the CSV formatted data
"""
read_lines = 0
# It will run by default for 24hs
command = 'rtl_power -f ' + str(args.startfreq) + 'M:' + str(args.endfreq) + 'M:' + str(args.stepfreq) + 'Khz -g 25 -i 1 -e 86400 -'
FNULL = open(os.devnull, 'w')
p = Popen(command, shell=True, stdout=PIPE, bufsize=1, stderr=FNULL)
return p.stdout
class ui:
def __init__(self):
self.stdscr = curses.initscr()
curses.noecho()
curses.cbreak()
curses.curs_set(0)
curses.start_color()
curses.use_default_colors()
for i in range(0, curses.COLORS):
curses.init_pair(i + 1, i, -1)
self.curr_height, self.curr_width = self.stdscr.getmaxyx()
self.stdscr.keypad(1)
self.hist_lines = []
self.w1height = self.curr_height - 5
self.w1width = self.curr_width
# curses.newwin(DOWN RIGHT CORNER y from top, DOWN RIGHT CORNER x from left , TOP LEFT CORNER y from top , TOP LEFT CORNER x from left)
# 0 means the size of the current window
self.win1 = curses.newwin(self.w1height, self.w1width, 0, 0)
self.win1.border(0)
self.pan1 = curses.panel.new_panel(self.win1)
self.win2 = curses.newwin(0, 0, self.w1height, 0)
self.win2.border(0)
self.pan3 = curses.panel.new_panel(self.win2)
self.win1.addstr(1, 1, "Location Signal (the more, the closer)", curses.color_pair(4))
self.win1.addstr(2, 1, "DateTime (Amount of peaks) [Top Freq Detected MHz] Histogram", curses.color_pair(4))
self.update_status('Detecting...')
self.win2.addstr(2, 1, "Press 's' to increase the threshold (less sensitivity), 'S' to decresase the threshold (more sensitivity).", curses.color_pair(4))
self.win2.addstr(3, 1, "Press 'm' to toggle sound, or 'q' to quit.", curses.color_pair(4))
self.update_sound(args.sound)
self.pan1.hide()
self.refresh()
def refresh(self):
curses.panel.update_panels()
self.win1.refresh()
self.win2.refresh()
def refresh_threshold(self, threshold):
self.win2.addstr(1, 25, "Threshold: {}".format(threshold), curses.color_pair(2))
self.refresh()
def update_sound(self, sound):
line = '{:5}'.format(str(sound))
self.win2.addstr(1, 45, "Sound: {}".format(line), curses.color_pair(2))
self.refresh()
def update_freq(self, freq1, freq2):
self.win2.addstr(1, 60, "Min Freq: {}. Max Freq: {}".format(freq1, freq2), curses.color_pair(2))
self.refresh()
def update_status(self, text):
status = '{:15.15}'.format(text)
self.win2.addstr(1, 1, "Status: {}".format(status), curses.color_pair(2))
self.refresh()
def update_hour(self):
self.win2.addstr(3, self.w1width - 45, 'Current Time: ' + str(datetime.now()), curses.color_pair(9))
self.refresh()
def update_histogram(self, text):
"""
Put one more line in the histogram
"""
self.hist_lines.append(text)
# Redraw the complete histogram, from bottom up
for lpos in range(self.w1height - 2, 2, -1):
try:
# -1 is to start from the last line
# - so we go down the list
# height of the window -
self.win1.addstr(lpos, 1, str(self.hist_lines[-1 - (self.w1height - 2 - lpos)])[:self.w1width - 2], curses.color_pair(7))
except IndexError:
pass
self.refresh()
def quit_ui(self):
curses.nocbreak()
self.stdscr.keypad(0)
curses.curs_set(1)
curses.echo()
curses.endwin()
print("UI quitted")
exit(0)
class runner:
"""
Class to read the input and manage the input lines
"""
def __init__(self, rfile):
self.running = False
self.rfile = rfile
self.ui = ui()
self.threshold = args.threshold
self.sound = args.sound
self.ui.refresh_threshold(self.threshold)
def stop(self):
self.running = False
def run(self):
self.running = True
while self.running:
self.ui.update_status('Detecting...')
self.ui.update_hour()
self.ui.update_freq(int(args.startfreq), int(args.endfreq))
line = rfile.readline()
resp = process_line(line, self.ui, self.threshold, self.sound)
while sys.stdin in select.select([sys.stdin], [], [], 0)[0]:
char = sys.stdin.read(1)
if char.strip() == "q":
self.stop()
self.ui.quit_ui()
break
elif char.strip() == "s":
self.threshold += 1
self.ui.refresh_threshold(self.threshold)
elif char.strip() == "S":
self.threshold -= 1
self.ui.refresh_threshold(self.threshold)
elif char.strip() == "m" and self.sound:
self.sound = False
self.ui.update_sound(self.sound)
elif char.strip() == "m" and not self.sound:
self.sound = True
self.ui.update_sound(self.sound)
self.ui.refresh()
####################
# Main
####################
if __name__ == "__main__":
# Parse the parameters
parser = argparse.ArgumentParser()
parser.add_argument('-f', '--file', help='CSV file from rtl_power.', action='store', required=False)
parser.add_argument('-t', '--threshold', help='DBm threshold. First threshold in our paper.', action='store', required=False, type=float, default=default_threshold)
parser.add_argument('-v', '--verbose', help='Verbose level.', action='store', required=False, type=int, default=0)
parser.add_argument('-F', '--detfreqthreshold', help='Second threshold in our paper. It is the threshold of the amount of frequencies that should be over the dbm threshold to have a detection.', action='store', required=False, type=int, default=1)
parser.add_argument('-s', '--search', help='Search mode. Prints the amount of frequencies found to be over the specified threshold of -t. The more, the closer. In this mode, the -F threshold is not used.', action='store_true', required=False, default=True)
parser.add_argument('-S', '--sound', help='Play a sound when there is some detection in this time frame.', action='store_true', required=False, default=True)
parser.add_argument('-a', '--startfreq', help='Start frequency for rtl_power. Defaults to 50 MHz', action='store', type=int, required=False, default=100)
parser.add_argument('-b', '--endfreq', help='End frequency for rtl_power. Defaults to 1760 MHz (USB device)', action='store', type=int, required=False, default=400)
parser.add_argument('-c', '--stepfreq', help='Step frequency for rtl_power. Defaults to 4000 MHz', action='store', type=int, required=False, default=4000)
args = parser.parse_args()
if args.verbose > 0:
print('Salamandra Hidden Microphone Detector. Version {}\n'.format(version))
pygame.mixer.init(frequency=22050, size=-16, channels=2, buffer=8196)
if args.sound:
pygame.mixer.music.load('start3.ogg')
pygame.mixer.music.play()
time.sleep(1)
pygame.mixer.music.load('detection.ogg')
try:
if args.file:
rfile = process_file()
else:
rfile = process_stdin()
r = runner(rfile)
r.run()
except KeyboardInterrupt:
print('Exiting.')