feat: obtain Java and Python artifacts from .m2 or Python virtual environment from input

docs/source/pages/cli_usage/command_analyze.rst

@@ -24,6 +24,7 @@ Usage
         [-d DIGEST] [-pe PROVENANCE_EXPECTATION]
         [--skip-deps] [--deps-depth DEPS_DEPTH] [-g TEMPLATE_PATH]
         [--python-venv PYTHON_VENV]
+        [--local-maven-repo LOCAL_MAVEN_REPO]
 
 -------
 Options
@@ -79,6 +80,10 @@ Options
 
     The path to the Python virtual environment of the target software component.
 
+.. option:: --local-maven-repo LOCAL_MAVEN_REPO
+
+    The path to the local .m2 directory. If this option is not used, Macaron will use the default location at $HOME/.m2
+
 -----------
 Environment
 -----------

scripts/release_scripts/run_macaron.sh

@@ -328,14 +328,18 @@ if [[ $command == "analyze" ]]; then
                 python_venv_path="$2"
                 shift
                 ;;
+            --local-maven-repo)
+                local_maven_repo="$2"
+                shift
+                ;;
             *)
                 rest_command+=("$1")
                 ;;
         esac
         shift
     done
 elif [[ $command == "verify-policy" ]]; then
-     while [[ $# -gt 0 ]]; do
+    while [[ $# -gt 0 ]]; do
         case $1 in
             -d|--database)
                 arg_database="$2"
@@ -351,6 +355,15 @@ elif [[ $command == "verify-policy" ]]; then
         esac
         shift
     done
+elif [[ $command == "dump-defaults" ]]; then
+    while [[ $# -gt 0 ]]; do
+        case $1 in
+            *)
+                rest_command+=("$1")
+                ;;
+        esac
+        shift
+    done
 fi
 
 # MACARON entrypoint - Main argvs
@@ -455,6 +468,47 @@ if [[ -n "${python_venv_path:-}" ]]; then
     mount_dir_ro "--python-venv" "$python_venv_path" "$python_venv_in_container"
 fi
 
+# Mount the local Maven repo from the
+# host file system into the container's
+# ${MACARON_WORKSPACE}/analyze_local_maven_repo_readonly.
+if [[ -n "${local_maven_repo:-}" ]]; then
+    local_maven_repo_in_container="${MACARON_WORKSPACE}/analyze_local_maven_repo_readonly"
+    argv_command+=("--local-maven-repo" "${MACARON_WORKSPACE}/analyze_local_maven_repo_readonly")
+
+    mount_dir_ro "--local-maven-repo" "$local_maven_repo" "$local_maven_repo_in_container"
+else
+    # Mounting default local maven repo only
+    # when the user doesn't provide --local-maven-repo AND `analyze` command is used.
+    if [[ "$command" == "analyze" ]]; then
+        # We mount the host's $HOME/.m2 into the container's
+        # ${MACARON_WORKSPACE}/analyze_local_maven_repo_readonly ONLY IF $HOME/.m2 directory exists.
+        if [[ -d "$HOME/.m2" ]]; then
+            local_maven_repo_in_container="${MACARON_WORKSPACE}/analyze_local_maven_repo_readonly"
+            argv_command+=("--local-maven-repo" "${MACARON_WORKSPACE}/analyze_local_maven_repo_readonly")
+
+            mount_dir_ro "--local-maven-repo" "$HOME/.m2" "$local_maven_repo_in_container"
+        # If the host's $HOME/.m2 doesn't exist, we create and mount an empty directory ${output}/analyze_local_maven_repo_readonly
+        # into ${MACARON_WORKSPACE}/analyze_local_maven_repo_readonly. And then provide
+        # ${MACARON_WORKSPACE}/analyze_local_maven_repo_readonly into the --local-maven-repo
+        # flag.
+        # This is because:
+        #   - By default if --local-maven-repo is not used, Macaron uses $HOME/.m2 of the current
+        #     environment as the local maven repo.
+        #   - If --local-maven-repo is not set when Macaron is running in the Docker container, it will try to
+        #     use $HOME/.m2 WITHIN the container. This is not desirable as this $HOME/.m2 is being used
+        #     by the cyclonedx plugins for dependency resolution, which requires read write. We treat the local
+        #     maven repo as a read only directory, hence they cannot share.
+        else
+            local_maven_repo_in_container="${MACARON_WORKSPACE}/analyze_local_maven_repo_readonly"
+            output_local_maven_repo="${output}/analyze_local_maven_repo_readonly"
+            mkdir -p "$output_local_maven_repo"
+            argv_command+=("--local-maven-repo" "${MACARON_WORKSPACE}/analyze_local_maven_repo_readonly")
+
+            mount_dir_ro "--local-maven-repo" "$output_local_maven_repo" "$local_maven_repo_in_container"
+        fi
+    fi
+fi
+
 # MACARON entrypoint - verify-policy command argvs
 # This is for macaron verify-policy command.
 # Determine the database path to be mounted into ${MACARON_WORKSPACE}/database/macaron.db

src/macaron/__main__.py

@@ -74,6 +74,29 @@ def analyze_slsa_levels_single(analyzer_single_args: argparse.Namespace) -> None
             sys.exit(os.EX_OSFILE)
         global_config.load_python_venv(analyzer_single_args.python_venv)
 
+    # Set local maven repo path.
+    if analyzer_single_args.local_maven_repo is None:
+        # Load the default user local .m2 directory.
+        # Exit on error if $HOME is not set or empty.
+        home_dir = os.getenv("HOME")
+        if not home_dir:
+            logger.critical("Environment variable HOME is not set.")
+            sys.exit(os.EX_USAGE)
+
+        local_maven_repo = os.path.join(home_dir, ".m2")
+        if not os.path.isdir(local_maven_repo):
+            logger.debug("The default local Maven repo at %s does not exist. Ignore ...")
+            global_config.local_maven_repo = None
+
+        global_config.local_maven_repo = local_maven_repo
+    else:
+        user_provided_local_maven_repo = analyzer_single_args.local_maven_repo
+        if not os.path.isdir(user_provided_local_maven_repo):
+            logger.error("The user provided local Maven repo at %s is not valid.", user_provided_local_maven_repo)
+            sys.exit(os.EX_USAGE)
+
+        global_config.local_maven_repo = user_provided_local_maven_repo
+
     analyzer = Analyzer(global_config.output_path, global_config.build_log_path)
 
     # Initiate reporters.
@@ -453,6 +476,14 @@ def main(argv: list[str] | None = None) -> None:
         ),
     )
 
+    single_analyze_parser.add_argument(
+        "--local-maven-repo",
+        required=False,
+        help=(
+            "The path to the local .m2 directory. If this option is not used, Macaron will use the default location at $HOME/.m2"
+        ),
+    )
+
     # Dump the default values.
     sub_parser.add_parser(name="dump-defaults", description="Dumps the defaults.ini file to the output directory.")
 

src/macaron/artifact/local_artifact.py

@@ -0,0 +1,249 @@
+# Copyright (c) 2024 - 2024, Oracle and/or its affiliates. All rights reserved.
+# Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl/.
+
+"""This module declares types and utilities for handling local artifacts."""
+
+import fnmatch
+import glob
+import os
+
+from packageurl import PackageURL
+
+from macaron.artifact.maven import construct_maven_repository_path
+from macaron.errors import LocalArtifactFinderError
+
+
+def construct_local_artifact_dirs_glob_pattern_maven_purl(maven_purl: PackageURL) -> list[str] | None:
+    """Return a list of glob pattern(s) representing the directory that contains the local maven artifacts for ``maven_purl``.
+
+    The glob pattern(s) can be used to search in `<...>/.m2/repository` directory.
+
+    Parameters
+    ----------
+    maven_purl : PackageURL
+        A maven type PackageURL instance.
+
+    Returns
+    -------
+    list[str] | None
+        A list of glob patterns or None if an error happened.
+
+    Examples
+    --------
+    >>> from packageurl import PackageURL
+    >>> purl = PackageURL.from_string("pkg:maven/com.oracle.macaron/[email protected]")
+    >>> construct_local_artifact_dirs_glob_pattern_maven_purl(purl)
+    ['com/oracle/macaron/macaron/0.13.0']
+    """
+    if maven_purl.type != "maven":
+        return None
+
+    group = maven_purl.namespace
+    artifact = maven_purl.name
+    version = maven_purl.version
+
+    if group is None or version is None:
+        return None
+
+    return [construct_maven_repository_path(group, artifact, version)]
+
+
+def construct_local_artifact_dirs_glob_pattern_pypi_purl(pypi_purl: PackageURL) -> list[str] | None:
+    """Return a list of glob pattern(s) representing directories that contains the artifacts in a Python virtual environment.
+
+    The glob pattern(s) can be used to search in `<...>/<python_venv>/lib/python3.x/site-packages`
+    directory.
+
+    Parameters
+    ----------
+    pypi_purl : PackageURL
+        A pypi type PackageURL instance.
+
+    Returns
+    -------
+    list[str] | None
+        A list of glob patterns or None if an error happened.
+
+    Examples
+    --------
+    >>> from packageurl import PackageURL
+    >>> purl = PackageURL.from_string("pkg:pypi/[email protected]")
+    >>> construct_local_artifact_dirs_glob_pattern_pypi_purl(purl)
+    ['django', 'django-1.11.1.dist-info', 'django-1.11.1.data']
+    """
+    if pypi_purl.type != "pypi":
+        return None
+
+    name = pypi_purl.name
+    version = pypi_purl.version
+
+    if version is None:
+        return None
+
+    # These patterns are from the content of a wheel file, which are extracted into the site-packages
+    # directory. References:
+    # https://packaging.python.org/en/latest/specifications/binary-distribution-format/#file-contents
+    glob_patterns = []
+    glob_patterns.append(name)
+    glob_patterns.append(f"{name}-{version}.dist-info")
+    glob_patterns.append(f"{name}-{version}.data")
+
+    return glob_patterns
+
+
+def find_artifact_dirs_from_local_maven_repo(
+    local_maven_repo: str,
+    glob_patterns: list[str],
+) -> list[str]:
+    """Find directories that contains maven artifacts within a maven local repository.
+
+    ``local_maven_repo`` should be in format `<...>/.m2/repository`.
+
+    Parameters
+    ----------
+    local_maven_repo: str
+        The path to the directory to find artifacts.
+    glob_patterns: list[str]
+        The list of glob patterns that matches to artifact directory names.
+
+    Returns
+    -------
+    list[str]
+        The list of paths to artifact directories in the form of ``venv_site_package_path``/path/to/artifact_dir
+        If no artifact directory is found, this list will be empty.
+
+    Raises
+    ------
+    LocalArtifactFinderError
+        If ``local_maven_repo`` doesn't exist.
+    """
+    if not os.path.isdir(local_maven_repo):
+        raise LocalArtifactFinderError(f"{local_maven_repo} doesn't exist.")
+
+    artifact_paths = []
+    for pattern in glob_patterns:
+        found_paths = glob.glob(
+            root_dir=local_maven_repo,
+            pathname=pattern,
+        )
+
+        for found_path in found_paths:
+            full_path = os.path.join(local_maven_repo, found_path)
+            if os.path.isdir(full_path):
+                artifact_paths.append(full_path)
+
+    return artifact_paths
+
+
+def find_artifact_dirs_from_python_venv(
+    venv_site_package_path: str,
+    glob_patterns: list[str],
+) -> list[str]:
+    """Find directories within a python virtual environment.
+
+    For packages in the virtual environment, we will treat their name case-insensitively.
+    https://packaging.python.org/en/latest/specifications/name-normalization/
+
+    ``venv_site_package_path`` should be in format `<...>/lib/python3.*/site-packages/`.
+
+    Parameters
+    ----------
+    venv_path: str
+        The path to the local directory to find artifacts.
+    glob_patterns: list[str]
+        The list of glob patterns that matches to artifact directory names.
+
+    Returns
+    -------
+    list[str]
+        The list of paths to artifact directories in the form of ``venv_site_package_path``/path/to/artifact_dir
+        If no artifact directory is found, this list will be empty.
+
+    Raises
+    ------
+    LocalArtifactFinderError
+        If ``venv_site_package_path`` doesn't exist or if we cannot view the sub-directory of it.
+    """
+    if not os.path.isdir(venv_site_package_path):
+        raise LocalArtifactFinderError(f"{venv_site_package_path} doesn't exist.")
+
+    artifact_paths = []
+
+    try:
+        venv_path_entries = os.listdir(venv_site_package_path)
+    except (NotADirectoryError, PermissionError, FileNotFoundError) as error:
+        error_msg = f"Cannot view the sub-directory of venv {venv_site_package_path}"
+        raise LocalArtifactFinderError(error_msg) from error
+
+    all_package_dirs: list[str] = []
+    for entry in venv_path_entries:
+        entry_path = os.path.join(venv_site_package_path, entry)
+        if os.path.isdir(entry_path):
+            all_package_dirs.append(entry)
+
+    for package_dir in all_package_dirs:
+        for pattern in glob_patterns:
+            if fnmatch.fnmatch(package_dir.lower(), pattern.lower()):
+                full_path = os.path.join(venv_site_package_path, package_dir)
+                artifact_paths.append(full_path)
+
+    return artifact_paths
+
+
+def get_local_artifact_dirs(
+    purl: PackageURL,
+    local_artifact_repo_path: str,
+) -> list[str]:
+    """Return the paths to directories that store local artifacts for a PackageURL.
+
+    We look for local artifacts of ``purl`` in ``local_artifact_repo_path``.
+
+    This function returns a list of paths (as strings), each has the format
+        ``local_artifact_repo_path``/path/to/artifact_dir``
+
+    This will mean that no path to an artifact is returned. Therefore, it's the responsibility
+    of this function caller to inspect the artifact directory to obtain the required
+    artifact.
+
+    We assume that ``local_artifact_repo_path`` exists.
+
+    Parameters
+    ----------
+    purl : PackageURL
+        The purl we want to find local artifacts
+    local_artifact_repo_path : str
+        The local artifact repo directory.
+
+    Returns
+    -------
+    list[str]
+        The list contains the artifact directory paths. It will be empty if no artifact can be found.
+
+    Raises
+    ------
+    LocalArtifactFinderError
+        If an error happens when looking for local artifacts.
+    """
+    purl_type = purl.type
+
+    if purl_type == "maven":
+        maven_artifact_patterns = construct_local_artifact_dirs_glob_pattern_maven_purl(purl)
+        if not maven_artifact_patterns:
+            raise LocalArtifactFinderError(f"Cannot generate maven artifact patterns for {purl}")
+
+        return find_artifact_dirs_from_local_maven_repo(
+            local_maven_repo=local_artifact_repo_path,
+            glob_patterns=maven_artifact_patterns,
+        )
+
+    if purl_type == "pypi":
+        pypi_artifact_patterns = construct_local_artifact_dirs_glob_pattern_pypi_purl(purl)
+        if not pypi_artifact_patterns:
+            raise LocalArtifactFinderError(f"Cannot generate Python package patterns for {purl}")
+
+        return find_artifact_dirs_from_python_venv(
+            venv_site_package_path=local_artifact_repo_path,
+            glob_patterns=pypi_artifact_patterns,
+        )
+
+    raise LocalArtifactFinderError(f"Unsupported PURL type {purl_type}")