48 lines
1.7 KiB
Python
48 lines
1.7 KiB
Python
import hashlib
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import requests
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from io import BytesIO
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from PIL import Image
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import secrets
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def fetch_single_frame(url):
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response = requests.get(url, stream=True)
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boundary = b'--myboundary'
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data = b''
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in_frame = False
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frame_data = b''
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for chunk in response.iter_content(chunk_size=1024):
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data += chunk
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if not in_frame and boundary in data:
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in_frame = True
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data = data.split(boundary, 1)[1]
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if in_frame and b'Content-Type: image/jpeg' in data:
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parts = data.split(b'\r\n\r\n', 1)
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if len(parts) > 1:
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frame_part = parts[1]
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if b'\r\n--myboundary' in frame_part:
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frame_data = frame_part.split(b'\r\n--myboundary', 1)[0]
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try:
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return Image.open(BytesIO(frame_data))
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except Exception as e:
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print(f"Error processing frame: {e}")
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return None
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raise ValueError("No valid frame found in the stream.")
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def generate_random_numbers(frame, bit_lengths=[16, 32, 64, 128, 256]):
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img_bytes = frame.resize((100, 100)).tobytes()
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entropy = hashlib.sha256(img_bytes).digest()
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# Use secrets.randbits directly
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return {length: secrets.randbits(length) for length in bit_lengths}
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url = "http://192.168.0.200/mjpg/video.mjpg"
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try:
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frame = fetch_single_frame(url)
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if frame:
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random_numbers = generate_random_numbers(frame)
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for length, number in random_numbers.items():
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print(f"{length}-bit random number: {hex(number)}")
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else:
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print("Failed to extract a valid frame.")
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except Exception as e:
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print(f"Error: {e}")
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