fix: remove enr padding #7

	name: Check Bootnodes ENRs

	on:
	pull_request:
	branches:
	- main

	jobs:
	check_padding:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v2

	- name: Install Python
	run: \|
	sudo apt-get update
	sudo apt-get install python3

	- name: Check bootnodes ENRs have no padding
	run: \|
	for FILE in $(find . -type f $ -name 'bootnodes.yaml' -o -name 'bootstrap_nodes.txt' $); do
	BASE64_STRINGS=$(grep -Eo '^[[:space:]][- ]["]?([a-zA-Z0-9+/]+={0,2})[[:space:]][- ]["]?' "$FILE" \| sed 's/"//g')
	for BASE64_STRING in $BASE64_STRINGS; do
	if [[ "$BASE64_STRING" =~ [^A-Za-z0-9+/=] ]]; then
	echo "Base64 string in $FILE contains invalid characters or padding."
	exit 1
	fi
	done
	done

	- name: Decode Base64
	run: \|
	for FILE in $(find . -type f $ -name 'bootnodes.yaml' -o -name 'bootstrap_nodes.txt' $); do
	BASE64_STRINGS=$(grep -Eo '^[[:space:]][- ]["]?([a-zA-Z0-9+/]+={0,2})[[:space:]][- ]["]?' "$FILE" \| sed 's/"//g')
	for BASE64_STRING in $BASE64_STRINGS; do
	DECODED_STRING=$(echo "$BASE64_STRING" \| base64 -d 2>/dev/null)
	if [ $? -eq 0 ]; then
	echo "Decoded base64 string in $FILE: $DECODED_STRING"
	fi
	done
	done

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