[OE-core][PATCH v8 3/7] spdx30: Add ecosystem-specific PURL generation via bbclasses

[stondo@gmail.com]

From: Stefano Tondo <stefano.tondo.ext@siemens.com>

Have each ecosystem bbclass set its own Package URL by prepending to
SPDX_PACKAGE_URLS, rather than detecting inherited classes from the
SPDX code. This follows the principle that each class should know how
to describe itself.

The following bbclasses now generate ecosystem PURLs:
  - pypi.bbclass:         pkg:pypi/<normalized-name>@PV
  - npm.bbclass:          pkg:npm/<name>@PV
  - cargo_common.bbclass: pkg:cargo/<name>@PV
  - go-mod.bbclass:       pkg:golang/<GO_IMPORT>@PV
  - cpan.bbclass:         pkg:cpan/<name>@PV

Additional ecosystems (nuget, maven, dotnet) can follow the same
pattern in their respective layers.

Signed-off-by: Stefano Tondo <stefano.tondo.ext@siemens.com>
---
 meta/classes-recipe/cargo_common.bbclass |  3 +++
 meta/classes-recipe/cpan.bbclass         | 11 +++++++++++
 meta/classes-recipe/go-mod.bbclass       |  3 +++
 meta/classes-recipe/npm.bbclass          |  7 +++++++
 meta/classes-recipe/pypi.bbclass         |  3 +++
 5 files changed, 27 insertions(+)

diff --git a/meta/classes-recipe/cargo_common.bbclass b/meta/classes-recipe/cargo_common.bbclass
index bc44ad7918..e884b344ef 100644
--- a/meta/classes-recipe/cargo_common.bbclass
+++ b/meta/classes-recipe/cargo_common.bbclass
@@ -240,3 +240,6 @@ EXPORT_FUNCTIONS do_configure
 # https://github.com/rust-lang/libc/issues/3223
 # https://github.com/rust-lang/libc/pull/3175
 INSANE_SKIP:append = " 32bit-time"
+
+# Generate ecosystem-specific Package URL for SPDX
+SPDX_PACKAGE_URLS:prepend = "pkg:cargo/${BPN}@${PV} "
diff --git a/meta/classes-recipe/cpan.bbclass b/meta/classes-recipe/cpan.bbclass
index bb76a5b326..355e7e6adf 100644
--- a/meta/classes-recipe/cpan.bbclass
+++ b/meta/classes-recipe/cpan.bbclass
@@ -68,4 +68,15 @@ cpan_do_install () {
 	done
 }
 
+# Generate ecosystem-specific Package URL for SPDX
+def cpan_spdx_name(d):
+    bpn = d.getVar('BPN')
+    if bpn.startswith('perl-'):
+        return bpn[5:]
+    elif bpn.startswith('libperl-'):
+        return bpn[8:]
+    return bpn
+
+SPDX_PACKAGE_URLS:prepend = "pkg:cpan/${@cpan_spdx_name(d)}@${PV} "
+
 EXPORT_FUNCTIONS do_configure do_compile do_install
diff --git a/meta/classes-recipe/go-mod.bbclass b/meta/classes-recipe/go-mod.bbclass
index a15dda8f0e..344712b193 100644
--- a/meta/classes-recipe/go-mod.bbclass
+++ b/meta/classes-recipe/go-mod.bbclass
@@ -32,3 +32,6 @@ do_compile[dirs] += "${B}/src/${GO_WORKDIR}"
 # Make go install unpack the module zip files in the module cache directory
 # before the license directory is polulated with license files.
 addtask do_compile before do_populate_lic
+
+# Generate ecosystem-specific Package URL for SPDX
+SPDX_PACKAGE_URLS:prepend = "pkg:golang/${GO_IMPORT}@${PV} "
diff --git a/meta/classes-recipe/npm.bbclass b/meta/classes-recipe/npm.bbclass
index 344e8b4bec..aec69ebfd3 100644
--- a/meta/classes-recipe/npm.bbclass
+++ b/meta/classes-recipe/npm.bbclass
@@ -354,4 +354,11 @@ FILES:${PN} += " \
     ${nonarch_libdir} \
 "
 
+# Generate ecosystem-specific Package URL for SPDX
+def npm_spdx_name(d):
+    bpn = d.getVar('BPN')
+    return bpn[4:] if bpn.startswith('node-') else bpn
+
+SPDX_PACKAGE_URLS:prepend = "pkg:npm/${@npm_spdx_name(d)}@${PV} "
+
 EXPORT_FUNCTIONS do_configure do_compile do_install
diff --git a/meta/classes-recipe/pypi.bbclass b/meta/classes-recipe/pypi.bbclass
index 1372d85e8d..fd5cd7af95 100644
--- a/meta/classes-recipe/pypi.bbclass
+++ b/meta/classes-recipe/pypi.bbclass
@@ -55,3 +55,6 @@ UPSTREAM_CHECK_URI ?= "https://pypi.org/simple/${@pypi_normalize(d)}/"
 UPSTREAM_CHECK_REGEX ?= "${UPSTREAM_CHECK_PYPI_PACKAGE}-(?P<pver>(\d+[\.\-_]*)+).(tar\.gz|tgz|zip|tar\.bz2)"
 
 CVE_PRODUCT ?= "python:${PYPI_PACKAGE}"
+
+# Generate ecosystem-specific Package URL for SPDX
+SPDX_PACKAGE_URLS:prepend = "pkg:pypi/${@pypi_normalize(d)}@${PV} "
-- 
2.53.0