add bad-transferfrom-access-control rule #75

	name: validate-r2c-registry-metadata

	# Test this workflow using github.com/nektos/act
	# > brew install act
	# > echo '{"pull_request":{"head":{"ref":develop"}},{"base":{"ref":"release"}}}' > act-env.json
	# > act pull_request --verbose --eventpath act-env.json -j validate-metadata

	on:
	pull_request:
	branches: [ master ]
	push:
	branches: [ master ]

	jobs:
	validate-metadata:
	if: github.repository == 'Decurity/semgrep-smart-contracts'
	name: Validate r2c registry metadata
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v2
	with:
	fetch-depth: 0
	- id: changed-files
	name: get changed files
	env:
	HEAD_REF: ${{ github.head_ref }}
	BASE_REF: ${{ github.base_ref }}
	run: \|
	echo "CHANGED_FILES=$(git diff --name-only origin/${BASE_REF} origin/${HEAD_REF} \| xargs )" >> $GITHUB_OUTPUT
	- id: print-changed-files
	env:
	CHANGED_FILES: ${{ steps.changed-files.outputs.CHANGED_FILES }}
	name: debugging step - print changed files
	run: echo $CHANGED_FILES
	- uses: actions/setup-python@v2
	with:
	python-version: 3.9.2
	- name: install deps
	run: pip install jsonschema pyyaml
	- name: validate metadata
	env:
	CHANGED_FILES: ${{ steps.changed-files.outputs.CHANGED_FILES }}
	run: \|
	python .github/scripts/validate-metadata.py -s ./metadata-schema.yaml.schm -f $CHANGED_FILES

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