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import base64 |
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import uvicorn |
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from fastapi.staticfiles import StaticFiles |
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from fastapi import FastAPI |
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from fastapi.responses import FileResponse |
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app = FastAPI() |
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def add_base32_padding(encoded_text): |
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padding_needed = 8 - (len(encoded_text) % 8) |
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return encoded_text + '=' * padding_needed |
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def remove_f4_prefix(encoded_text): |
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prefix = "f410f" |
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if encoded_text.startswith(prefix): |
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return encoded_text[len(prefix):] |
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else: |
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return None |
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@app.get("/", response_class=FileResponse) |
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def read_root(): |
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return "./static/index.html" |
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@app.get("/convert_address_f4_0X") |
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def convert_address_f4_0X(f4Address: str): |
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print(f4Address) |
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if f4Address is not None and len(f4Address) == 44: |
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encoded_text = remove_f4_prefix(f4Address) |
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encoded_text_with_padding = add_base32_padding(encoded_text.upper()) |
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decoded_bytes = base64.b32decode(encoded_text_with_padding) |
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# Discard the last 4 bytes |
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decoded_bytes = decoded_bytes[:-4] |
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hex_string = "0x" + decoded_bytes.hex() |
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return {"fevm address": hex_string} |
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else: |
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return {"error": "Incorrect f4 address format"} |
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app.mount("/", StaticFiles(directory="static"), name="static") |
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if __name__ == "__main__": |
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uvicorn.run(app, host="0.0.0.0", port=8000) |
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