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#!/usr/bin/env python3
from os import getenv
from pathlib import Path
from sys import argv
import hashlib
import json
if len(argv) != 2:
print("ERROR: JSON info script requires output arg")
exit(1)
json_path = Path(argv[1])
file_path = Path(getenv("FILE_DIR")) / getenv("FILE_NAME")
if not file_path.is_file():
print("Skip JSON creation for non existing file", file_path)
exit(0)
def get_titles():
titles = []
for prefix in ["", "ALT0_", "ALT1_", "ALT2_"]:
title = {}
for var in ["vendor", "model", "variant"]:
if getenv("DEVICE_{}{}".format(prefix, var.upper())):
title[var] = getenv("DEVICE_{}{}".format(prefix, var.upper()))
if title:
titles.append(title)
if not titles:
titles.append({"title": getenv("DEVICE_TITLE")})
return titles
device_id = getenv("DEVICE_ID")
sha256_hash = hashlib.sha256()
with open(str(file_path),"rb") as f:
# Read and update hash string value in blocks of 4K
for byte_block in iter(lambda: f.read(4096),b""):
sha256_hash.update(byte_block)
hash_file = sha256_hash.hexdigest()
if file_path.with_suffix(file_path.suffix + ".sha256sum").exists():
hash_unsigned = (
file_path.with_suffix(file_path.suffix + ".sha256sum").read_text().strip()
)
else:
hash_unsigned = hash_file
file_info = {
"metadata_version": 1,
"target": "{}/{}".format(getenv("TARGET"), getenv("SUBTARGET")),
"version_code": getenv("VERSION_CODE"),
"version_number": getenv("VERSION_NUMBER"),
"source_date_epoch": int(getenv("SOURCE_DATE_EPOCH")),
"profiles": {
device_id: {
"image_prefix": getenv("DEVICE_IMG_PREFIX"),
"images": [
{
"type": getenv("FILE_TYPE"),
"name": getenv("FILE_NAME"),
"sha256": hash_file,
"sha256_unsigned": hash_unsigned,
}
],
"device_packages": getenv("DEVICE_PACKAGES").split(),
"supported_devices": getenv("SUPPORTED_DEVICES").split(),
"titles": get_titles(),
}
},
}
if getenv("FILE_FILESYSTEM"):
file_info["profiles"][device_id]["images"][0]["filesystem"] = getenv(
"FILE_FILESYSTEM"
)
json_path.write_text(json.dumps(file_info, separators=(",", ":")))
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