Madison Grubb
79 lines
2.5 KiB
Bash
79 lines
2.5 KiB
Bash
#!/bin/bash -e
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################################################################################
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## File: yq.sh
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## Desc: Installs YQ with checksum validation
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################################################################################
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# source: https://github.com/actions/runner-images/blob/5d6938f680075d63fa71f8aa70990866cd12884b/images/linux/scripts/installers/yq.sh
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download_with_retries() {
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local URL="$1"
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local DEST="${2:-.}"
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local NAME="${3:-${URL##*/}}"
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echo "Downloading '$URL' to '${DEST}/${NAME}'..."
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local retries=20
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local interval=30
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while [ "$retries" -gt 0 ]; do
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((retries--)) || true
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if curl -fsSL -o "${DEST}/${NAME}" "$URL"; then
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echo "Download completed"
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return 0
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fi
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echo "Error downloading. Waiting ${interval}s before retry, ${retries} attempts left"
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sleep "$interval"
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done
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echo "Could not download $URL"
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return 1
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}
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get_hash_from_remote_file() {
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local url=$1
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local keywords=("$2" "$3")
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local delimiter=${4:-' '}
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local word_number=${5:-1}
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local matching_line
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matching_line=$(curl -fsSL "$url" | sed 's/ */ /g' | tr -d '`')
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for keyword in "${keywords[@]}"; do
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matching_line=$(echo "$matching_line" | grep "$keyword" || true)
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done
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matching_line=$(echo "$matching_line" | head -n1)
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if [ -z "$matching_line" ]; then
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echo "Keywords (${keywords[*]}) not found in the file with hashes." >&2
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exit 1
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fi
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echo "$matching_line" | cut -d "$delimiter" -f "$word_number" | tr -d -c '[:alnum:]'
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}
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use_checksum_comparison() {
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local file_path=$1
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local checksum=$2
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local sha_type=${3:-256}
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local local_file_hash
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echo "Performing checksum verification"
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if [ ! -f "$file_path" ]; then
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echo "File not found: $file_path" >&2
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exit 1
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fi
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local_file_hash=$(shasum -a "$sha_type" "$file_path" | awk '{print $1}')
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if [ "$local_file_hash" != "$checksum" ]; then
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echo "Checksum verification failed. Expected: $checksum; Actual: $local_file_hash." >&2
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exit 1
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fi
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echo "Checksum verification passed"
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}
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yq_arch() {
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case "$(uname -m)" in
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'aarch64') echo 'arm64' ;;
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'x86_64') echo 'amd64' ;;
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'armv7l') echo 'arm' ;;
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*) exit 1 ;;
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esac
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}
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base_url="https://github.com/mikefarah/yq/releases/latest/download"
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filename="yq_linux_$(yq_arch)"
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download_with_retries "${base_url}/${filename}" "/tmp" "yq"
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external_hash=$(get_hash_from_remote_file "${base_url}/checksums" "${filename} " "" " " "19")
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use_checksum_comparison "/tmp/yq" "${external_hash}"
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sudo install /tmp/yq /usr/bin/yq
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