write-ups-challenges-2022-2023/super-hightech-paint/super-hightech-paint-2/grandma/grandma.py

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2022-11-24 21:59:22 +00:00
#!/bin/python3
import os
import subprocess
from tempfile import mkdtemp
from threading import Thread
import socket
import struct
import sys
import data
import time
SOCK_ADDR = "/tmp/gtk_buffer"
def grandma_say(*args):
print(f"*beep* *boob* {' '.join(list(args))}")
def send_data(conn):
for line in data.data:
conn.send(struct.pack('iiiii', 3, *line))
time.sleep(0.01)
def main():
if len(sys.argv) != 2:
print(f"Grandma linkup error: invalid syntax\nUsage: cyber-grandma-linkup <program-to-upload>")
sys.exit(1)
if os.path.exists(SOCK_ADDR):
os.remove(SOCK_ADDR)
s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
s.bind(SOCK_ADDR)
s.listen(1)
# Timeout is 1 second
s.settimeout(0.3)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
# Spawn the subprocess
try:
dir = mkdtemp()
if subprocess.call(["cp", sys.argv[1], dir], stderr=subprocess.PIPE, stdout=subprocess.PIPE) != 0:
raise ValueError
print("Uploading program to secure location...")
print("[## ] 10%")
time.sleep(0.3)
print("[####### ] 50%")
time.sleep(0.3)
print("[############ ] 89%")
time.sleep(0.3)
print("[##############] 100%")
grandma_say("Ah, I received the program, let me just run it real quick.")
process = subprocess.Popen([f"{dir}/{sys.argv[1]}"])
except Exception:
grandma_say("I don't think that's a program")
s.close()
os.remove(SOCK_ADDR)
sys.exit(1)
try:
conn, addr = s.accept()
data = conn.recv(1024)
# Check if the type is correct, yes this is janky
if struct.unpack('iiiii', data)[0] != 2:
raise ValueError
grandma_say("Awesome, look at the cool stuff I can draw")
send_data(conn)
conn.close()
grandma_say("Alright, thanks, see you at christmas!")
except Exception as e:
grandma_say("I can't seem to connect with this program")
s.close()
os.remove(SOCK_ADDR)
if __name__ == '__main__':
main()