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from __future__ import absolute_import |
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from __future__ import print_function |
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import os |
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from glob import glob |
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def get_rule_dir_yaml(dir_path): |
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""" |
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Returns the path to the yaml metadata for a rule directory, |
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regardless of if it exists. |
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""" |
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return os.path.join(dir_path, "rule.yml") |
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def get_rule_dir_id(path): |
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""" |
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Returns the ID of a rule directory; correctly handles being passed |
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either the directory path or the yaml metadata path. |
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""" |
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dir_path = path |
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if path.endswith("rule.yml"): |
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dir_path = os.path.dirname(path) |
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return os.path.basename(dir_path) |
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def is_rule_dir(dir_path): |
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""" |
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Returns True iff dir_path is a valid rule directory which exists |
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To be valid, dir_path must exist and be a directory and the file |
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returned by get_rule_dir_yaml(dir_path) must exist. |
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""" |
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rule_yaml = get_rule_dir_yaml(dir_path) |
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is_dir = os.path.isdir(dir_path) |
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has_rule_yaml = os.path.exists(rule_yaml) |
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return is_dir and has_rule_yaml |
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def applies_to_product(file_name, product): |
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""" |
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A OVAL or fix is filtered by product iff product is Falsy, file_name is |
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"shared", or file_name is product. Note that this does not filter by |
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contents of the fix or check, only by the name of the file. |
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""" |
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if not product: |
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return True |
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return file_name == "shared" or file_name == product or product.startswith(file_name) |
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def get_rule_dir_ovals(dir_path, product=None): |
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""" |
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Gets a list of OVALs contained in a rule directory. If product is |
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None, returns all OVALs. If product is not None, returns applicable |
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OVALs in order of priority: |
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{{{ product }}}.xml -> shared.xml |
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Only returns OVALs which exist. |
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""" |
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if not is_rule_dir(dir_path): |
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return [] |
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oval_dir = os.path.join(dir_path, "oval") |
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has_oval_dir = os.path.isdir(oval_dir) |
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if not has_oval_dir: |
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return [] |
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# Two categories of results: those for a product and those that are shared |
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# to multiple products. Within common results, there's two types: |
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# those shared to multiple versions of the same type (added up front) and |
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# those shared across multiple product types (e.g., RHEL and Ubuntu). |
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product_results = [] |
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common_results = [] |
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for oval_file in sorted(os.listdir(oval_dir)): |
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file_name, ext = os.path.splitext(oval_file) |
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oval_path = os.path.join(oval_dir, oval_file) |
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if ext == ".xml" and applies_to_product(file_name, product): |
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# applies_to_product ensures we only have three entries: |
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# 1. shared |
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# 2. <product> |
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# 3. <product><version> |
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if file_name == 'shared': |
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# Shared are the lowest priority items, add them to the end of |
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# the common results. |
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common_results.append(oval_path) |
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elif file_name != product: |
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# Here, the filename is a subset of the product, but isn't |
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# the full product. Product here is both the product name |
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# (e.g., ubuntu) and its version (2004). Filename could be |
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# either "ubuntu" or "ubuntu2004" so we want this branch |
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# to trigger when it is the former, not the latter. It is |
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# the highest priority of common results, so insert it |
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# before any shared ones. |
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common_results.insert(0, oval_path) |
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else: |
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# Finally, this must be a product-specific result. |
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product_results.append(oval_path) |
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# Combine the two sets in priority order. |
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return product_results + common_results |
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def get_rule_dir_sces(dir_path, product=None): |
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""" |
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Get a list of SCEs contained in a rule directory. If product is None, |
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returns all SCEs. If product is not None, returns applicable SCEs in |
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order of priority: |
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{{{ product }}}.{{{ ext }}} -> shared.{{{ ext }}} |
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Only returns SCEs which exist. |
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""" |
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if not is_rule_dir(dir_path): |
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return [] |
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sce_dir = os.path.join(dir_path, "sce") |
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has_sce_dir = os.path.isdir(sce_dir) |
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if not has_sce_dir: |
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return [] |
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results = [] |
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common_results = [] |
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for sce_file in sorted(os.listdir(sce_dir)): |
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file_name, ext = os.path.splitext(sce_file) |
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sce_path = os.path.join(sce_dir, sce_file) |
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if applies_to_product(file_name, product): |
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if file_name == 'shared': |
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common_results.append(sce_path) |
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elif file_name != product: |
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common_results.insert(0, sce_path) |
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else: |
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results.append(sce_path) |
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return results + common_results |
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def find_rule_dirs(base_dir): |
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""" |
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Generator which yields all rule directories within a given base_dir, recursively |
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""" |
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for root, dirs, _ in os.walk(base_dir): |
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dirs.sort() |
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for dir_name in dirs: |
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dir_path = os.path.join(root, dir_name) |
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if is_rule_dir(dir_path): |
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yield dir_path |
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def find_rule_dirs_in_paths(base_dirs): |
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""" |
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Generator which yields all rule directories within a given directories list, recursively |
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""" |
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if base_dirs: |
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for cur_dir in base_dirs: |
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for d in find_rule_dirs(cur_dir): |
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yield d |
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ComplianceAsCode /
content
