VictorHuu 4c38ee1932
fix:best effort to get the os info of an ELF binary (#4438)
* fix:the os of an elf binary should be detected even when the os version is empty

Signed-off-by: Yuntao Hu <victorhu493@gmail.com>

* chore:revoke the update of appCpe

Signed-off-by: Yuntao Hu <victorhu493@gmail.com>

* chore:resume the testcase

Signed-off-by: Yuntao Hu <victorhu493@gmail.com>

* fix:revoke the possible compromise to the json schema

Signed-off-by: Yuntao Hu <victorhu493@gmail.com>

* fix:align with the json schema

Signed-off-by: Yuntao Hu <victorhu493@gmail.com>

* add a json schema(pre-relase,may be in conflict with others')

Signed-off-by: Yuntao Hu <victorhu493@gmail.com>

* chore:add a json schema

Signed-off-by: Yuntao Hu <victorhu493@gmail.com>

* chore:revert the accidental change to 16.1.0

Signed-off-by: Yuntao Hu <victorhu493@gmail.com>

* regression/fix:best effort to get the os info

Signed-off-by: Yuntao Hu <victorhu493@gmail.com>

* chore:resume the previous json file

Signed-off-by: Yuntao Hu <victorhu493@gmail.com>

* update the schema ver to 16.2.0

Signed-off-by: Yuntao Hu <victorhu493@gmail.com>

* chore:no breaking behavior

Signed-off-by: Yuntao Hu <victorhu493@gmail.com>

* chore: follow the guide of the README.md

Signed-off-by: Yuntao Hu <victorhu493@gmail.com>

* appCpe is temporarily unused

Signed-off-by: Yuntao Hu <victorhu493@gmail.com>

* preserve json field for osCPE

Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>

---------

Signed-off-by: Yuntao Hu <victorhu493@gmail.com>
Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>
Co-authored-by: Alex Goodman <wagoodman@users.noreply.github.com>
2025-12-12 19:13:59 +00:00
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JSON Schema

This is the JSON schema for output from the JSON presenters (syft packages <img> -o json). The required inputs for defining the JSON schema are as follows:

  • the value of internal.JSONSchemaVersion that governs the schema filename
  • the Document struct definition within github.com/anchore/syft/syft/formats/syftjson/model/document.go that governs the overall document shape
  • generated AllTypes() helper function within the syft/internal/sourcemetadata and syft/internal/packagemetadata packages

With regard to testing the JSON schema, integration test cases provided by the developer are used as examples to validate that JSON output from Syft is always valid relative to the schema/json/schema-$VERSION.json file.

Versioning

Versioning the JSON schema must be done manually by changing the JSONSchemaVersion constant within internal/constants.go.

This schema is being versioned based off of the "SchemaVer" guidelines, which slightly diverges from Semantic Versioning to tailor for the purposes of data models.

Given a version number format MODEL.REVISION.ADDITION:

  • MODEL: increment when you make a breaking schema change which will prevent interaction with any historical data
  • REVISION: increment when you make a schema change which may prevent interaction with some historical data
  • ADDITION: increment when you make a schema change that is compatible with all historical data

Adding a New pkg.*Metadata Type

When adding a new pkg.*Metadata that is assigned to the pkg.Package.Metadata struct field you must add a test case to cmd/syft/internal/test/integration/catalog_packages_cases_test.go that exercises the new package type with the new metadata.

Additionally it is important to generate a new JSON schema since the pkg.Package.Metadata field is covered by the schema.

Generating a New Schema

Create the new schema by running make generate-json-schema from the root of the repo:

  • If there is not an existing schema for the given version, then the new schema file will be written to schema/json/schema-$VERSION.json
  • If there is an existing schema for the given version and the new schema matches the existing schema, no action is taken
  • If there is an existing schema for the given version and the new schema does not match the existing schema, an error is shown indicating to increment the version appropriately (see the "Versioning" section)

Note: never delete a JSON schema and never change an existing JSON schema once it has been published in a release! Only add new schemas with a newly incremented version. All previous schema files must be stored in the schema/json/ directory.