CycloneDX Generator

This script creates a valid CycloneDX Software Bill-of-Materials (SBOM) containing an aggregate of all project dependencies for node.js, php, python, java and Go projects in XML and JSON format. CycloneDX 1.2 is a lightweight SBOM specification that is easily created, human and machine readable, and simple to parse.

Supported languages and package format

Language	Package format
node.js	package-lock.json, pnpm-lock.yaml, yarn.lock, rush.js
java	maven (pom.xml [1]), gradle (build.gradle, .kts), scala (sbt)
php	composer.lock
python	setup.py, requirements.txt [2], Pipfile.lock, poetry.lock
go	go.mod, go.sum, Gopkg.lock
ruby	Gemfile.lock
rust	Cargo.lock
.Net Framework	.csproj, packages.config
.Net core	.csproj, packages.config

NOTE:

• Apache maven 3.x is required for parsing pom.xml
• gradle or gradlew is required to parse gradle projects
• sbt is required for parsing scala sbt projects. Only scala 2.10 + sbt 0.13.6+ and 2.12 + sbt 1.0+ is supported for now.
  • Alternatively, create a lock file using sbt-dependency-lock plugin

Footnotes:

[1] - For multi-module application, the BoM file could include components that may not be included in the packaged war or ear file. [2] - Use pip freeze to improve the accuracy for requirements.txt based parsing.

Automatic usage detection (Node.js)

There is a basic AST parser powered by babel-parser to detect packages that are imported and used in Node.js and TypeScript projects. Such imported packages would automatically have their scope property set to required. This attribute can be later used for various purposes. For example, dep-scan use this attribute to prioritize vulnerabilities.

Usage

Installing

npm install -g @appthreat/cdxgen

Getting Help

$ cdxgen -h
Options:
  -v, --version                  Print version number                  [boolean]
  -o, --output                   Output file for bom.xml or bom.json. Default
                                 console
  -t, --type                     Project type
  -r, --recurse                  Recurse mode suitable for mono-repos  [boolean]
  -s, --subproject               Analyze only a specific subproject. Provide a
                                 subproject name used by a specific build tool.
                                 Subproject names don't necessarily follow
                                 subdirectories names
  -c, --resolve-class            Resolve class names for packages. jars only for
                                 now.                                  [boolean]
      --server-url               Dependency track or AppThreat server url. Eg:
                                 https://deptrack.appthreat.io
      --api-key                  Dependency track or AppThreat server api key
      --project-name             Dependency track or AppThreat project name.
                                 Default use the directory name
      --project-version          Dependency track or AppThreat project version.
                                 Default master              [default: "master"]
      --project-id               Dependency track or AppThreat project id.
                                 Either provide the id or the project name and
                                 version together
      --deterministic-for-tests  Hardcode metadata like timestamps so the output
                                 is deterministic. Useful for integration tests
                                                                       [boolean]
  -h                             Show help                             [boolean]

Example

Minimal example.

cdxgen -o bom.xml

NOTE:

cdxgen would always produce bom in both xml and json format as per CycloneDX 1.2 specification. json is the recommended format.

For a java project. This would automatically detect maven, gradle or sbt and build bom accordingly

cdxgen -t java -o bom.xml

War file support

cdxgen can generate a BoM file from a given war file.

# cdxgen -t java app.war
cdxgen app.war

Resolving class names

Sometimes it is necessary to resolve class names contained in jar files. By passing an optional argument --resolve-class, it is possible to get cdxgen create a separate mapping file with the jar name (including the version) as the key and class names list as a value.

cdxgen -t java --resolve-class -o bom.json

This would create a bom.json.map file with the jar - class name mapping. Refer to these examples to learn about the structure.

Environment variables

Variable	Description
SCAN_DEBUG_MODE	Set to debug to enable debug messages
GITHUB_TOKEN	Specify GitHub token to prevent traffic shaping while querying license and repo information
MVN_CMD	Set to override maven command
MVN_ARGS	Set to pass additional arguments such as profile or settings to maven
MAVEN_HOME	Specify maven home
GRADLE_CACHE_DIR	Specify gradle cache directory. Useful for class name resolving
GRADLE_MULTI_PROJECT_MODE	Set this variable for gradle multi-project applications. Do not use this with recurse mode.
SBT_CACHE_DIR	Specify sbt cache directory. Useful for class name resolving
FETCH_LICENSE	Set to true to fetch license information from the registry. npm and golang only
USE_GOSUM	Set to true to generate BOMs for golang projects using go.sum as the dependency source of truth, instead of go.mod
CDXGEN_TIMEOUT_MS	Default timeout for known execution involving maven, gradle or sbt

Integration with GitHub action

Use the GitHub action to automatically generate and upload bom to the server. Refer to nodejs.yml in this repo for a working example.

Integration with Google CloudBuild

Use this custom builder and refer to the readme for instruction.

License

Permission to modify and redistribute is granted under the terms of the Apache 2.0 license. See the LICENSE file for the full license.