Ross Wolf
16fb306254
* Add upload command to kibana * Restore skipped fields * Change prefix to DR_ * Add note to manage_versions call * Reorder requirements.txt to trigger build
270 lines
11 KiB
Python
270 lines
11 KiB
Python
# Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
|
|
# or more contributor license agreements. Licensed under the Elastic License;
|
|
# you may not use this file except in compliance with the Elastic License.
|
|
|
|
"""Packaging and preparation for releases."""
|
|
import base64
|
|
import hashlib
|
|
import json
|
|
import os
|
|
import shutil
|
|
from collections import OrderedDict
|
|
|
|
import click
|
|
|
|
from . import rule_loader
|
|
from .misc import JS_LICENSE
|
|
from .rule import Rule # noqa: F401
|
|
from .utils import get_path, get_etc_path
|
|
|
|
RELEASE_DIR = get_path("releases")
|
|
PACKAGE_FILE = get_etc_path('packages.yml')
|
|
RULE_VERSIONS = get_etc_path('version.lock.json')
|
|
NOTICE_FILE = get_path('NOTICE.txt')
|
|
|
|
|
|
def filter_rule(rule, config_filter): # type: (Rule,dict) -> bool # rule.contents (not api), filter_dict -> match
|
|
"""Filter a rule based off metadata and a package configuration."""
|
|
flat_rule = rule.flattened_contents
|
|
for key, values in config_filter.items():
|
|
if key not in flat_rule:
|
|
return False
|
|
|
|
values = set([v.lower() if isinstance(v, str) else v for v in values])
|
|
rule_value = flat_rule[key]
|
|
|
|
if isinstance(rule_value, list):
|
|
rule_values = {v.lower() if isinstance(v, str) else v for v in rule_value}
|
|
else:
|
|
rule_values = {rule_value.lower() if isinstance(rule_value, str) else rule_value}
|
|
|
|
if len(rule_values & values) == 0:
|
|
return False
|
|
|
|
return True
|
|
|
|
|
|
def manage_versions(rules, current_versions=None, exclude_version_update=False, add_new=True, save_changes=False,
|
|
verbose=True):
|
|
# type: (list[Rule], dict, bool, bool, bool, bool) -> [list, list]
|
|
"""Update the contents of the version.lock file and optionally save changes."""
|
|
new_rules = {}
|
|
changed_rules = []
|
|
|
|
if current_versions is None:
|
|
with open(RULE_VERSIONS, 'r') as f:
|
|
current_versions = json.load(f)
|
|
|
|
for rule in rules:
|
|
# it is a new rule, so add it if specified, and add an initial version to the rule
|
|
if rule.id not in current_versions:
|
|
new_rules[rule.id] = {'rule_name': rule.name, 'version': 1, 'sha256': rule.get_hash()}
|
|
rule.contents['version'] = 1
|
|
else:
|
|
version_lock_info = current_versions.get(rule.id)
|
|
version = version_lock_info['version']
|
|
rule_hash = rule.get_hash()
|
|
|
|
# if it has been updated, then we need to bump the version info and optionally save the changes later
|
|
if rule_hash != version_lock_info['sha256']:
|
|
rule.contents['version'] = version + 1
|
|
|
|
if not exclude_version_update:
|
|
version_lock_info['version'] = rule.contents['version']
|
|
|
|
version_lock_info.update(sha256=rule_hash, rule_name=rule.name)
|
|
changed_rules.append(rule.id)
|
|
else:
|
|
rule.contents['version'] = version
|
|
|
|
# update the document with the new rules
|
|
if new_rules or changed_rules:
|
|
if verbose:
|
|
click.echo('Rule hash changes detected!')
|
|
|
|
if save_changes:
|
|
current_versions.update(new_rules if add_new else {})
|
|
current_versions = OrderedDict(sorted(current_versions.items(), key=lambda x: x[1]['rule_name']))
|
|
|
|
with open(RULE_VERSIONS, 'w') as f:
|
|
json.dump(current_versions, f, indent=2, sort_keys=True)
|
|
|
|
if verbose:
|
|
click.echo('Updated version.lock.json file with:')
|
|
else:
|
|
if verbose:
|
|
click.echo('run `build-release --update-version-lock` to update the version.lock.json file')
|
|
|
|
if verbose:
|
|
if changed_rules:
|
|
click.echo(' - {} changed rule version(s)'.format(len(changed_rules)))
|
|
if new_rules:
|
|
click.echo(' - {} new rule version addition(s)'.format(len(new_rules)))
|
|
|
|
return changed_rules, new_rules.keys()
|
|
|
|
|
|
class Package(object):
|
|
"""Packaging object for siem rules and releases."""
|
|
|
|
def __init__(self, rules, name, release=False, current_versions=None, min_version=None, max_version=None,
|
|
update_version_lock=False):
|
|
"""Initialize a package."""
|
|
self.rules = [r.copy() for r in rules] # type: list[Rule]
|
|
self.name = name
|
|
self.release = release
|
|
|
|
self.changed_rules, self.new_rules = self._add_versions(current_versions, update_version_lock)
|
|
|
|
if min_version or max_version:
|
|
self.rules = [r for r in self.rules
|
|
if (min_version or 0) <= r.contents['version'] <= (max_version or r.contents['version'])]
|
|
|
|
def _add_versions(self, current_versions, update_versions_lock=False):
|
|
"""Add versions to rules at load time."""
|
|
return manage_versions(self.rules, current_versions=current_versions, save_changes=update_versions_lock)
|
|
|
|
@staticmethod
|
|
def _package_notice_file(save_dir):
|
|
"""Convert and save notice file with package."""
|
|
with open(NOTICE_FILE, 'rt') as f:
|
|
notice_txt = f.read()
|
|
|
|
with open(os.path.join(save_dir, 'notice.ts'), 'wt') as f:
|
|
commented_notice = [f' * {line}'.rstrip() for line in notice_txt.splitlines()]
|
|
lines = ['/* eslint-disable @kbn/eslint/require-license-header */', '', '/* @notice']
|
|
lines = lines + commented_notice + [' */', '']
|
|
f.write('\n'.join(lines))
|
|
|
|
def _package_index_file(self, save_dir):
|
|
"""Convert and save index file with package."""
|
|
sorted_rules = sorted(self.rules, key=lambda k: (k.metadata['creation_date'], os.path.basename(k.path)))
|
|
comments = [
|
|
'// Auto generated file from either:',
|
|
'// - scripts/regen_prepackage_rules_index.sh',
|
|
'// - detection-rules repo using CLI command build-release',
|
|
'// Do not hand edit. Run script/command to regenerate package information instead',
|
|
]
|
|
rule_imports = [f"import rule{i} from './{os.path.splitext(os.path.basename(r.path))[0] + '.json'}';"
|
|
for i, r in enumerate(sorted_rules, 1)]
|
|
const_exports = ['export const rawRules = [']
|
|
const_exports.extend(f" rule{i}," for i, _ in enumerate(sorted_rules, 1))
|
|
const_exports.append("];")
|
|
const_exports.append("")
|
|
|
|
index_ts = [JS_LICENSE, ""]
|
|
index_ts.extend(comments)
|
|
index_ts.append("")
|
|
index_ts.extend(rule_imports)
|
|
index_ts.append("")
|
|
index_ts.extend(const_exports)
|
|
|
|
with open(os.path.join(save_dir, 'index.ts'), 'wt') as f:
|
|
f.write('\n'.join(index_ts))
|
|
|
|
def save_release_files(self, directory, changed_rules, new_rules):
|
|
"""Release a package."""
|
|
with open(os.path.join(directory, '{}-summary.txt'.format(self.name)), 'w') as f:
|
|
f.write(self.generate_summary(changed_rules, new_rules))
|
|
with open(os.path.join(directory, '{}-consolidated.json'.format(self.name)), 'w') as f:
|
|
json.dump(json.loads(self.get_consolidated()), f, sort_keys=True, indent=2)
|
|
|
|
def get_consolidated(self, as_api=True):
|
|
"""Get a consolidated package of the rules in a single file."""
|
|
full_package = []
|
|
for rule in self.rules:
|
|
full_package.append(rule.contents if as_api else rule.rule_format())
|
|
|
|
return json.dumps(full_package, sort_keys=True)
|
|
|
|
def save(self, verbose=True):
|
|
"""Save a package and all artifacts."""
|
|
save_dir = os.path.join(RELEASE_DIR, self.name)
|
|
rules_dir = os.path.join(save_dir, 'rules')
|
|
extras_dir = os.path.join(save_dir, 'extras')
|
|
|
|
# remove anything that existed before
|
|
shutil.rmtree(save_dir, ignore_errors=True)
|
|
os.makedirs(rules_dir, exist_ok=True)
|
|
os.makedirs(extras_dir, exist_ok=True)
|
|
|
|
for rule in self.rules:
|
|
rule.save(new_path=os.path.join(rules_dir, os.path.basename(rule.path)))
|
|
|
|
self._package_notice_file(rules_dir)
|
|
self._package_index_file(rules_dir)
|
|
|
|
if self.release:
|
|
self.save_release_files(extras_dir, self.changed_rules, self.new_rules)
|
|
|
|
# zip all rules only and place in extras
|
|
shutil.make_archive(os.path.join(extras_dir, self.name), 'zip', root_dir=os.path.dirname(rules_dir),
|
|
base_dir=os.path.basename(rules_dir))
|
|
|
|
# zip everything and place in release root
|
|
shutil.make_archive(os.path.join(save_dir, '{}-all'.format(self.name)), 'zip',
|
|
root_dir=os.path.dirname(extras_dir), base_dir=os.path.basename(extras_dir))
|
|
|
|
if verbose:
|
|
click.echo('Package saved to: {}'.format(save_dir))
|
|
|
|
def get_package_hash(self, as_api=True, verbose=True):
|
|
"""Get hash of package contents."""
|
|
contents = base64.b64encode(self.get_consolidated(as_api=as_api).encode('utf-8'))
|
|
sha256 = hashlib.sha256(contents).hexdigest()
|
|
|
|
if verbose:
|
|
click.echo('- sha256: {}'.format(sha256))
|
|
|
|
return sha256
|
|
|
|
@classmethod
|
|
def from_config(cls, config=None, update_version_lock=False): # type: (dict, bool) -> Package
|
|
"""Load a rules package given a config."""
|
|
all_rules = rule_loader.load_rules(verbose=False).values()
|
|
config = config or {}
|
|
rule_filter = config.pop('filter', {})
|
|
min_version = config.pop('min_version', None)
|
|
max_version = config.pop('max_version', None)
|
|
|
|
rules = filter(lambda rule: filter_rule(rule, rule_filter), all_rules)
|
|
update = config.pop('update', {})
|
|
package = cls(rules, min_version=min_version, max_version=max_version, update_version_lock=update_version_lock,
|
|
**config)
|
|
|
|
# Allow for some fields to be overwritten
|
|
if update.get('data', {}):
|
|
for rule in package.rules:
|
|
for sub_dict, values in update.items():
|
|
rule.contents[sub_dict].update(values)
|
|
|
|
return package
|
|
|
|
def generate_summary(self, changed_rules, new_rules):
|
|
"""Generate stats on package."""
|
|
ecs_versions = set()
|
|
indices = set()
|
|
changed = []
|
|
new = []
|
|
|
|
for rule in self.rules:
|
|
ecs_versions.update(rule.ecs_version)
|
|
indices.update(rule.contents.get('index', ''))
|
|
|
|
if rule.id in changed_rules:
|
|
changed.append('{} (v{})'.format(rule.name, rule.contents.get('version')))
|
|
elif rule.id in new_rules:
|
|
new.append('{} (v{})'.format(rule.name, rule.contents.get('version')))
|
|
|
|
total = 'Total Rules: {}'.format(len(self.rules))
|
|
sha256 = 'Package Hash: {}'.format(self.get_package_hash(verbose=False))
|
|
ecs_versions = 'ECS Versions: {}'.format(', '.join(ecs_versions))
|
|
indices = 'Included Indexes: {}'.format(', '.join(indices))
|
|
new_rules = 'New Rules: \n{}'.format('\n'.join(' - ' + s for s in sorted(new)) if new else 'N/A')
|
|
modified_rules = 'Modified Rules: \n{}'.format('\n'.join(' - ' + s for s in sorted(changed)) if new else 'N/A')
|
|
return '\n'.join([total, sha256, ecs_versions, indices, new_rules, modified_rules])
|
|
|
|
def bump_versions(self, save_changes=False, current_versions=None):
|
|
"""Bump the versions of all production rules included in a release and optionally save changes."""
|
|
return manage_versions(self.rules, current_versions=current_versions, save_changes=save_changes)
|