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fetch_uos_wechat_release.py
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fetch_uos_wechat_release.py
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#!/usr/bin/env python3
# Fetcher for UOS com.tencent.wechat release
# Copyright (C) 2024-present Guoxin "7Ji" Pu
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
# A full package URL looks like this:
# https://home-store-packages.uniontech.com/appstore/pool/appstore/c/com.tencent.wechat/com.tencent.wechat_1.0.0.236_arm64.deb
# For their safety, UOS mirrors verify client UAs for plain folder view across the whole site, except for exact file path
# home, pro, etc are all just cnames that resolve to app-store-files
# This is just like any other Debian mirrors:
# https://mirrors.tuna.tsinghua.edu.cn/debian/pool/main/b/bash/bash_5.0-4_amd64.deb
# Package list of a release from a debian mirror lives in a different folder like this:
# https://mirrors.tuna.tsinghua.edu.cn/debian/dists/bullseye/main/binary-amd64/Packages.xz
# Substitute the above and we get the following URL (eagle is the most recent release codename):
# https://home-store-packages.uniontech.com/appstore/dists/eagle/appstore/binary-amd64/Packages.gz
import requests
import zlib
import hashlib
import os
class Architecture:
arch_uos: str
arch_archlinux: str
version: str
url: str
file: str
sha256: str
sha1: str
md5: str
def __init__(self, arch_uos: str, arch_archlinux: str):
self.arch_uos = arch_uos
self.arch_archlinux = arch_archlinux
self.version = None
self.url = None
self.file = None
self.size = None
self.sha256 = None
self.sha1 = None
self.md5 = None
def fetch(self, url_appstore: str, session: requests.Session):
print(
f"=> Fetching for architecture '{self.arch_uos}' (Uniontech OS) / '{self.arch_archlinux}' (Arch Linux)"
)
url = f"{url_appstore}/dists/eagle/appstore/binary-{self.arch_uos}/Packages.gz"
response = session.get(url, stream=True)
if response.status_code != 200:
raise Exception(f"Request code is {response.status_code}")
decompressor = zlib.decompressobj(wbits=31)
data = bytearray()
for chunk in response.iter_content(0x100000):
data += decompressor.decompress(chunk)
data += decompressor.flush()
wechat = None
for package in data.split(b"\n\n"):
if package.startswith(b"Package: com.tencent.wechat\n"):
wechat = package
break
if wechat is None:
raise Exception(
f"Failed to find package com.tencent.wechat for arch '{self.arch_uos}'"
)
filename = None
for line in package.split(b"\n"):
if line.startswith(b"Version: "):
self.version = line[9:].decode("utf-8")
elif line.startswith(b"Filename: "):
filename = line[10:].decode("utf-8")
elif line.startswith(b"Size: "):
self.size = int(line[6:])
elif line.startswith(b"SHA256: "):
self.sha256 = line[8:].decode("utf-8")
elif line.startswith(b"SHA1: "):
self.sha1 = line[6:].decode("utf-8")
elif line.startswith(b"MD5sum: "):
self.md5 = line[8:].decode("utf-8")
if self.version is None:
raise Exception("Failed to get version")
if filename is None:
raise Exception(f"Failed to get remote filename")
self.url = f"{url_appstore}/{filename}"
self.file = f"wechat-universal_{self.version}_{self.arch_archlinux}.deb"
if self.size is None:
raise Exception("Failed to get size")
def cache(self, session: requests.Session):
print(
f"=> Caching for architecture '{self.arch_uos}' (Uniontech OS) / '{self.arch_archlinux}' (Arch Linux)"
)
if os.path.exists(self.file):
with open(self.file, "rb") as f:
data = f.read()
sha256 = hashlib.sha256(data).hexdigest()
sha1 = hashlib.sha1(data).hexdigest()
md5 = hashlib.md5(data).hexdigest()
integ = True
if sha256 != self.sha256:
print(f"sha256 not right, local {sha256} != remote {self.sha256}")
integ = False
if sha1 != self.sha1:
print(f"sha1 not right, local {sha1} != remote {self.sha1}")
integ = False
if md5 != self.md5:
print(f"md5 not right, local {md5} != remote {self.md5}")
integ = False
if integ:
print("All integ passed, no need to redownload")
return
os.remove(self.file)
print("Some integ failed, re-downloading")
response = session.get(self.url)
if response.status_code != 200:
raise Exception(f"Request code is {response.status_code}")
sha256 = hashlib.sha256(response.content).hexdigest()
sha1 = hashlib.sha1(response.content).hexdigest()
md5 = hashlib.md5(response.content).hexdigest()
integ = True
if sha256 != self.sha256:
print(f"sha256 not right, file {sha256} != repo {self.sha256}")
integ = False
if sha1 != self.sha1:
print(f"sha1 not right, file {sha1} != repo {self.sha1}")
integ = False
if md5 != self.md5:
print(f"md5 not right, file {md5} != repo {self.md5}")
integ = False
if not integ:
print("Some integ passed, would not save it, try to re-cache")
return
print("All integ passed, saving it to disk")
with open(self.file, "wb") as f:
f.write(response.content)
architectures = (
Architecture("amd64", "x86_64"),
Architecture("arm64", "aarch64"),
Architecture("loongarch64", "loong64"),
)
url_appstore = "https://home-store-packages.uniontech.com/appstore"
session = requests.Session()
for architecture in architectures:
architecture.fetch(url_appstore, session)
for architecture in architectures:
print(
f"source_{architecture.arch_archlinux}=(\n\t'{architecture.file}::{architecture.url}'\n)"
)
for architecture in architectures:
print(f"sha256sums_{architecture.arch_archlinux}=(\n\t'{architecture.sha256}'\n)")
for architecture in architectures:
print(f"sha1sums_{architecture.arch_archlinux}=(\n\t'{architecture.sha1}'\n)")
for architecture in architectures:
print(f"md5sums_{architecture.arch_archlinux}=(\n\t'{architecture.md5}'\n)")
print("Caching all files and verifying them...")
for architecture in architectures:
architecture.cache(session)