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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
import hashlib
import json
import os
import tarfile
import tempfile
from pathlib import Path
import requests
import yaml
from mozlint.pathutils import expand_exclusions
BROWSERTIME_FETCHES_PATH = Path("taskcluster/kinds/fetch/browsertime.yml")
CUSTOMIZATIONS_PATH = Path("testing/condprofile/condprof/customization/")
DOWNLOAD_TIMEOUT = 30
ERR_FETCH_TASK_MISSING = "firefox-addons taskcluster fetch config section not found"
ERR_FETCH_TASK_ADDPREFIX = "firefox-addons taskcluster config 'add-prefix' attribute should be set to 'firefox-addons/'"
ERR_FETCH_TASK_ARCHIVE = (
"Error downloading or opening archive from firefox-addons taskcluster fetch url"
)
LINTER_NAME = "condprof-addons"
MOZ_FETCHES_DIR = os.environ.get("MOZ_FETCHES_DIR")
RULE_DESC = "condprof addons all listed in firefox-addons.tar fetched archive"
MOZ_AUTOMATION = "MOZ_AUTOMATION" in os.environ
tempdir = tempfile.gettempdir()
def lint(paths, config, logger, fix=None, **lintargs):
filepaths = [Path(p) for p in expand_exclusions(paths, config, lintargs["root"])]
if len(filepaths) == 0:
return
linter = CondprofAddonsLinter(topsrcdir=lintargs["root"], logger=logger)
for filepath in filepaths:
linter.lint(filepath)
class CondprofAddonsLinter:
def __init__(self, topsrcdir, logger):
self.topsrcdir = topsrcdir
self.logger = logger
self.BROWSERTIME_FETCHES_FULLPATH = Path(
self.topsrcdir, BROWSERTIME_FETCHES_PATH
)
self.CUSTOMIZATIONS_FULLPATH = Path(self.topsrcdir, CUSTOMIZATIONS_PATH)
self.tar_xpi_filenames = self.get_firefox_addons_tar_names()
def lint(self, filepath):
data = self.read_json(filepath)
if "addons" not in data:
return
for addon_key in data["addons"]:
xpi_url = data["addons"][addon_key]
xpi_filename = xpi_url.split("/")[-1]
self.logger.info(f"Found addon {xpi_filename}")
if xpi_filename not in self.tar_xpi_filenames:
self.logger.lint_error(
self.get_missing_xpi_msg(xpi_filename),
lineno=0,
column=None,
path=str(filepath),
linter=LINTER_NAME,
rule=RULE_DESC,
)
def get_missing_xpi_msg(self, xpi_filename):
return f"{xpi_filename} is missing from the firefox-addons.tar archive"
def read_json(self, filepath):
with filepath.open("r") as f:
return json.load(f)
def read_yaml(self, filepath):
with filepath.open("r") as f:
return yaml.safe_load(f)
def download_firefox_addons_tar(self, firefox_addons_tar_url, tar_tmp_path):
self.logger.info(f"Downloading {firefox_addons_tar_url} to {tar_tmp_path}")
res = requests.get(
firefox_addons_tar_url, stream=True, timeout=DOWNLOAD_TIMEOUT
)
res.raise_for_status()
with tar_tmp_path.open("wb") as f:
for chunk in res.iter_content(chunk_size=1024):
if chunk is not None:
f.write(chunk)
f.flush()
def get_firefox_addons_tar_names(self):
# Get firefox-addons fetch task config.
browsertime_fetches = self.read_yaml(self.BROWSERTIME_FETCHES_FULLPATH)
if not (
"firefox-addons" in browsertime_fetches
and "fetch" in browsertime_fetches["firefox-addons"]
):
self.logger.lint_error(
ERR_FETCH_TASK_MISSING,
lineno=0,
column=None,
path=BROWSERTIME_FETCHES_PATH,
linter=LINTER_NAME,
rule=RULE_DESC,
)
return []
fetch_config = browsertime_fetches["firefox-addons"]["fetch"]
if not (
"add-prefix" in fetch_config
and fetch_config["add-prefix"] == "firefox-addons/"
):
self.logger.lint_error(
ERR_FETCH_TASK_ADDPREFIX,
lineno=0,
column=None,
path=BROWSERTIME_FETCHES_PATH,
linter=LINTER_NAME,
rule=RULE_DESC,
)
return []
firefox_addons_tar_url = fetch_config["url"]
firefox_addons_tar_sha256 = fetch_config["sha256"]
tar_xpi_files = list()
# When running on the CI, try to retrieve the list of xpi files from the target MOZ_FETCHES_DIR
# subdirectory instead of downloading the archive from the fetch url.
if MOZ_AUTOMATION:
fetches_path = (
Path(MOZ_FETCHES_DIR) if MOZ_FETCHES_DIR is not None else None
)
if fetches_path is not None and fetches_path.exists():
self.logger.info(
"Detected MOZ_FETCHES_DIR, look for pre-downloaded firefox-addons fetch results"
)
# add-prefix presence and value has been enforced at the start of this method.
fetches_addons = Path(fetches_path, "firefox-addons/")
if fetches_addons.exists():
self.logger.info(
f"Retrieve list of xpi files from firefox-addons fetch result at {str(fetches_addons)}"
)
for xpi_path in fetches_addons.iterdir():
if xpi_path.suffix == ".xpi":
tar_xpi_files.append(xpi_path.name)
return tar_xpi_files
else:
self.logger.warning(
"No 'firefox-addons/' subdir found in MOZ_FETCHES_DIR"
)
# Fallback to download the tar archive and retrieve the list of xpi file from it
# (e.g. when linting the local changes on the developers environment).
tar_tmp_path = Path(tempdir, "firefox-addons.tar")
tar_tmp_ready = False
# If the firefox-addons.tar file is found in the tempdir, check if the
# file hash matches, if it does then don't download it again.
if tar_tmp_path.exists():
tar_tmp_hash = hashlib.sha256()
with tar_tmp_path.open("rb") as f:
while chunk := f.read(1024):
tar_tmp_hash.update(chunk)
if tar_tmp_hash.hexdigest() == firefox_addons_tar_sha256:
self.logger.info(
f"Pre-downloaded file for {tar_tmp_path} found and sha256 matching"
)
tar_tmp_ready = True
else:
self.logger.info(
f"{tar_tmp_path} sha256 does not match the fetch config"
)
# If the file is not found or the hash doesn't match, download it from the fetch task url.
if not tar_tmp_ready:
try:
self.download_firefox_addons_tar(firefox_addons_tar_url, tar_tmp_path)
except requests.exceptions.HTTPError as http_err:
self.logger.lint_error(
f"{ERR_FETCH_TASK_ARCHIVE}, {str(http_err)}",
lineno=0,
column=None,
path=BROWSERTIME_FETCHES_PATH,
linter=LINTER_NAME,
rule=RULE_DESC,
)
return []
# Retrieve and return the list of xpi file names.
try:
with tarfile.open(tar_tmp_path, "r") as tf:
names = tf.getnames()
for name in names:
file_path = Path(name)
if file_path.suffix == ".xpi":
tar_xpi_files.append(file_path.name)
except tarfile.ReadError as read_err:
self.logger.lint_error(
f"{ERR_FETCH_TASK_ARCHIVE}, {str(read_err)}",
lineno=0,
column=None,
path=BROWSERTIME_FETCHES_PATH,
linter=LINTER_NAME,
rule=RULE_DESC,
)
return []
return tar_xpi_files