From: Stefano Tondo <[email protected]> Add a function that identifies ecosystem-specific PURLs (cargo, golang, pypi, npm, cpan, nuget, maven) for dependency packages, working alongside oe.purl.get_base_purl() which provides pkg:yocto PURLs.
Key design decision: Does NOT return pkg:generic fallback. This ensures: - No overlap with the base pkg:yocto generation - Packages get BOTH purls: pkg:yocto/layer/pkg@ver AND pkg:cargo/pkg@ver - Maximum traceability for compliance tools Detects ecosystems via: - Unambiguous file extensions (.crate for Rust) - Recipe inheritance (pypi, npm, cpan, nuget, maven classes) - BitBake variables (GO_IMPORT, PYPI_PACKAGE, MAVEN_GROUP_ID) Signed-off-by: Stefano Tondo <[email protected]> --- meta/lib/oe/spdx30_tasks.py | 113 ++++++++++++++++++++++++++++++++++++ 1 file changed, 113 insertions(+) diff --git a/meta/lib/oe/spdx30_tasks.py b/meta/lib/oe/spdx30_tasks.py index 789b39bd93..0ee39ffcd5 100644 --- a/meta/lib/oe/spdx30_tasks.py +++ b/meta/lib/oe/spdx30_tasks.py @@ -13,12 +13,125 @@ import oe.spdx30 import oe.spdx_common import oe.sdk import os +import re from contextlib import contextmanager from datetime import datetime, timezone from pathlib import Path + +def extract_dependency_metadata(d, file_name): + """Extract ecosystem-specific PURL for dependency packages. + + Uses recipe metadata to identify ecosystem PURLs (cargo, golang, pypi, + npm, cpan, nuget, maven). Returns (version, purl) or (None, None). + Does NOT return pkg:generic; base pkg:yocto is handled by get_base_purl(). + """ + + pv = d.getVar("PV") + version = pv if pv else None + purl = None + + # Rust crate (.crate extension is unambiguous) + if file_name.endswith('.crate'): + crate_match = re.match(r'^(.+?)-(\d+\.\d+\.\d+(?:\.\d+)?(?:[-+][\w.]+)?)\.crate$', file_name) + if crate_match: + name = crate_match.group(1) + version = crate_match.group(2) + purl = f"pkg:cargo/{name}@{version}" + return (version, purl) + + # Go module via GO_IMPORT variable + go_import = d.getVar("GO_IMPORT") + if go_import and version: + purl = f"pkg:golang/{go_import}@{version}" + return (version, purl) + + # Go module from filename with explicit hosting domain + go_match = re.match( + r'^((?:github|gitlab|gopkg|golang|go\.googlesource)\.com\.[\w.]+(?:\.[\w-]+)*?)-(v?\d+\.\d+\.\d+(?:[-+][\w.]+)?)\.', + file_name + ) + if go_match: + module_path = go_match.group(1).replace('.', '/', 1) + parts = module_path.split('/', 1) + if len(parts) == 2: + domain = parts[0] + path = parts[1].replace('.', '/') + module_path = f"{domain}/{path}" + + version = go_match.group(2) + purl = f"pkg:golang/{module_path}@{version}" + return (version, purl) + + # PyPI package + if bb.data.inherits_class("pypi", d) and version: + pypi_package = d.getVar("PYPI_PACKAGE") + if pypi_package: + # Normalize per PEP 503 + name = re.sub(r"[-_.]+", "-", pypi_package).lower() + purl = f"pkg:pypi/{name}@{version}" + return (version, purl) + + # NPM package + if bb.data.inherits_class("npm", d) and version: + bpn = d.getVar("BPN") + if bpn: + name = bpn[4:] if bpn.startswith('npm-') else bpn + purl = f"pkg:npm/{name}@{version}" + return (version, purl) + + # CPAN package + if bb.data.inherits_class("cpan", d) and version: + bpn = d.getVar("BPN") + if bpn: + if bpn.startswith('perl-'): + name = bpn[5:] + elif bpn.startswith('libperl-'): + name = bpn[8:] + else: + name = bpn + purl = f"pkg:cpan/{name}@{version}" + return (version, purl) + + # NuGet package + if (bb.data.inherits_class("nuget", d) or bb.data.inherits_class("dotnet", d)) and version: + bpn = d.getVar("BPN") + if bpn: + if bpn.startswith('dotnet-'): + name = bpn[7:] + elif bpn.startswith('nuget-'): + name = bpn[6:] + else: + name = bpn + purl = f"pkg:nuget/{name}@{version}" + return (version, purl) + + # Maven package + if bb.data.inherits_class("maven", d) and version: + group_id = d.getVar("MAVEN_GROUP_ID") + artifact_id = d.getVar("MAVEN_ARTIFACT_ID") + + if group_id and artifact_id: + purl = f"pkg:maven/{group_id}/{artifact_id}@{version}" + return (version, purl) + else: + bpn = d.getVar("BPN") + if bpn: + if bpn.startswith('maven-'): + name = bpn[6:] + elif bpn.startswith('java-'): + name = bpn[5:] + else: + name = bpn + purl = f"pkg:maven/{name}@{version}" + return (version, purl) + + # Base pkg:yocto PURL is handled by oe.purl.get_base_purl() + return (version, None) + + def walk_error(err): bb.error(f"ERROR walking {err.filename}: {err}") -- 2.53.0
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