openchain-telco-sbom-validator 0.0.9

Validator against version 1 of the OpenChain Telco SBOM Guide

openchain-telco-sbom-validator

A script to validate SBOMs against version 1.0 of the OpenChain Telco SBOM Guide.

Installation

From this folder issue pip3 install ..

We are working on the publication to Pypi also.

Installation of prerequisities

This script is written in Python and uses a requirements.txt to list its dependencies. To install Python on an Ubuntu environment run sudo apt install python3-pip.

It is usually a good practice to install Python dependencies to a Python virtual environment. To be able to manage virtual environments you need to install venv with sudo apt install python3-venv.

If you do not have a virtual environment yet cretate it with python3 -m venv .env, if you already have a virtual environment start it with . .env/bin/activate.

Usage

From command line

usage: open-chain-telco-sbom-validator [options] input

positional arguments:
  input                 The input SPDX file.

options:
  -h, --help            Shows this help message and exits.
  --debug               Prints debug logs.
  --nr-of-errors NR_OF_ERRORS
                        Sets a limit on the number of errors displayed.
  --strict-purl-check   Runs a strict check on the given purls. The default behaviour is to run a non strict purl
                        check what means that it is not checked if the purl is translating to a downloadable URL.
  --strict-url-check    Runs a strict check on the URLs of the PackageHomepages. Strict check means that the
                        validator checks also if the given URL can be accessed. The default behaviour is to run a non
                        strict URL check what means that it is not checked if the URL points to a valid page. Strict
                        URL check requires access to the internet and takes some time.')

As a library

The main functionality of the library can be acessed from the Validator class of the openchain_telco_sbom_validator.validator package. There are two support packages for building CLI tools around the validator what is in the cli package of the openchain_telco_sbom_validator package.

# import things

from openchain_telco_sbom_validator import cli
from openchain_telco_sbom_validator import reporter
from openchain_telco_sbom_validator.validator import Validator

def main():
    # Instantiate a validator
    
    myValidator = Validator()
    
    # Do validate
    result, problems = myValidator.validate(filePath,          # path to the SPDX file as a string
                                            strict_purl_check, # If strict purl check is needed
                                            strict_url_check)  # if strict URL check is needed

    # Print results in an uniform way

    exitCode = reporter.reportCli(result,        # Result received from the validator
                                  problems,      # List of problems from the validator
                                  nr_of_errors,  # Number of errors to display
                                  input)         # Name of the SPDX file

    # Exit
    sys.exit(exitCode)

Extensibility

Command line arguments

It is possible to add additional CLI arguments if needed for example:

    myArguments = cli.AdditionalArguments()
    myArguments.addArgument("--test",                    # The actual argument
                            "store_true",                # Option as it is required by argparse
                            "Help description of test")  # Help text to display

    args = cli.parseArguments(myArguments)

    if args.test:
      pass # Do something here

Additional checks

It is possible to add additional checks both on global and on package level.

    # Import in addition of the previous imports
    from openchain_telco_sbom_validator.validator import FunctionRegistry

    myValidator = Validator()

    # Instantiate the function registry
    functions = FunctionRegistry()

    # Register a global check. This will be executed only once for one SBOM
    functions.registerGlobal(checkJustLog)

    # Register a Package chack. This will be executed for every Packages in the SBOM
    functions.registerPackage(checkJustLogPackage)

    result, problems = myValidator.validate(filePath,
                                            strict_purl_check,
                                            strict_url_check,
                                            functions)         # Provide the function registry to the validate function

  # The functions have to be defined
def checkJustLog(problems: Problems, doc: Document): # Signature is important!
    logger = logging.getLogger(__name__)
    logger.debug("Hello world!")

def checkJustLogPackage(problems: Problems, package: Package): # Signature is important!
    logger = logging.getLogger(__name__)
    logger.debug("Hello package world!")

License

This software is Copyright Nokia and is licensed under the Apache 2.0 license.

Issues and contributions

In case of any issues please create a GitHub issue, while also any contributions are warmly welcome in the form of GitHub merge requests.

Licensed under the Apache License 2.0 SPDX-License-Identifier: Apache-2.0

Apache License Version 2.0, January 2004 http://www.apache.org/licenses/

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