forked from osmarks/potatOS
63 lines
1.7 KiB
Python
63 lines
1.7 KiB
Python
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#!/usr/bin/env python3
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import hashlib
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import json
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import datetime
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import os.path
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import shutil
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import ccecc
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import argparse
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from pathlib import Path, PurePosixPath
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parser = argparse.ArgumentParser(description="generate potatOS update manifests")
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parser.add_argument("-D", "--description", help="description of version")
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parser.add_argument("-s", "--sign", help="sign update manifest (requires update-key)", action="store_true", default=False)
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args = parser.parse_args()
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counter = 0
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if os.path.exists("./manifest"):
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current = open("manifest").read().split("\n")[0]
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counter = json.loads(current).get("build", 0)
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def hash_file(path):
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file = open(path, "rb")
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h = hashlib.sha256()
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while data := file.read(65536): h.update(data)
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return h.hexdigest()
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if args.sign:
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print("Signing update")
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import genkeys
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k = genkeys.get_key()
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pubkey = ccecc.public_key(k).hex()
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open("dist/update-key.hex", "w").write(pubkey)
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files = dict()
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code = Path("./dist/")
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for path in code.glob("**/*"):
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if not path.is_dir():
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files["/".join(path.parts[1:])] = hash_file(path)
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def deterministic_json_serialize(x):
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return json.dumps(x, sort_keys=True, separators=(",", ":"))
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manifest_data = deterministic_json_serialize({
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"files": files,
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"timestamp": int(datetime.datetime.now().timestamp()),
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"build": counter + 1,
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"description": args.description
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})
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manifest_meta = {
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"hash": hashlib.sha256(manifest_data.encode('utf-8')).hexdigest()
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}
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if args.sign:
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manifest_meta["sig"] = ccecc.sign(k, manifest_meta["hash"].encode("utf-8")).hex()
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manifest_meta = deterministic_json_serialize(manifest_meta)
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manifest = f"{manifest_data}\n{manifest_meta}"
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open("manifest", "w").write(manifest)
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shutil.copy("manifest", "dist")
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