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niklasent

Contributor

Registered: 2020-07-02

Posts: 7

Running pm3 commands over Python script

Hello all,

does someone know whether I can run the commands of the pm3 interface via external calls (e.g. hf sniff 10000 1 with Python scripts)?

I would like to automatically sniff hf traces and save these traces on my computer about 5000 times for research purposes without needing to enter the proper commands every time by my one.

Regards,
Niklas

niklasent

Contributor

Registered: 2020-07-02

Posts: 7

Re: Running pm3 commands over Python script

I have found out how to solve this issue by my own.

Here is the code for the case someone has a similar problem:

from __future__ import print_function
from __future__ import absolute_import

import pexpect
from pexpect import ANSI

port: str = ""  # Keep empty for auto-detection

if port == "":
    pm3_start_command = "pm3"
else:
    pm3_start_command = "pm3 -p " + port


class Sniffer:

    def __init__(self, engine=pm3_start_command, iterations=5000):
        self.iterations = iterations
        self.child = pexpect.spawn(engine)
        self.term = ANSI.ANSI()

    def sniff(self, samples_skip=10000, trigger_skip=1):
        self.child.expect('pm3 -->')
        self.child.sendline('hf sniff ' + str(samples_skip) + ' ' + str(trigger_skip))

    def save(self, filename):
        self.child.expect('pm3 -->')
        self.child.sendline('data save f ' + filename)

    def quit(self):
        self.child.sendline('quit')


def main():
    print("Starting pm3 interface...")
    sniffer = Sniffer()
    print("Starting sniffer for " + str(sniffer.iterations) + " iterations...")
    for i in range(sniffer.iterations):
        sniffer.sniff()
        print("Sniffing trace no. " + str(i + 1) + "...")
        sniffer.save("trace_" + str(i + 1))
        print("Saving trace no. " + str(i + 1) + "...")
    sniffer.quit()


if __name__ == "__main__":
    main()