openwrt/scripts/json_add_image_info.py
Paul Spooren 165f0b00cd build: store SOURCE_DATE_EPOCH in JSON info files
The source date epoch is the only reproducible date close to the actual
build date. It can be used for tooling like the firmware wizard to show
the image age.

Signed-off-by: Paul Spooren <mail@aparcar.org>
2020-11-12 18:19:44 +01:00

66 lines
1.8 KiB
Python
Executable File

#!/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])
bin_dir = Path(getenv("BIN_DIR"))
image_file = bin_dir / getenv("IMAGE_NAME")
if not image_file.is_file():
print("Skip JSON creation for non existing image ", image_file)
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")
image_hash = hashlib.sha256(image_file.read_bytes()).hexdigest()
image_info = {
"metadata_version": 1,
"target": "{}/{}".format(getenv("TARGET"), getenv("SUBTARGET")),
"version_code": getenv("VERSION_CODE"),
"version_number": getenv("VERSION_NUMBER"),
"source_date_epoch": getenv("SOURCE_DATE_EPOCH"),
"profiles": {
device_id: {
"image_prefix": getenv("IMAGE_PREFIX"),
"images": [
{
"type": getenv("IMAGE_TYPE"),
"name": getenv("IMAGE_NAME"),
"sha256": image_hash,
}
],
"device_packages": getenv("DEVICE_PACKAGES").split(),
"supported_devices": getenv("SUPPORTED_DEVICES").split(),
"titles": get_titles(),
}
},
}
json_path.write_text(json.dumps(image_info, separators=(",", ":")))