/
action.yml
258 lines (234 loc) · 11.8 KB
/
action.yml
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# action.yml
name: cosign-installer
author: sigstore
description: 'Installs cosign and includes it in your path'
branding:
icon: 'package'
color: 'blue'
# This is pinned to the last major release, we have to bump it for each action version.
inputs:
cosign-release:
description: 'cosign release version to be installed'
required: false
default: 'v2.2.4'
install-dir:
description: 'Where to install the cosign binary'
required: false
default: '$HOME/.cosign'
use-sudo:
description: 'set to true if install-dir location requires sudo privs'
required: false
default: 'false'
runs:
using: "composite"
steps:
# We verify the version against a SHA **in the published action itself**, not in the GCS bucket.
- shell: bash
run: |
#!/bin/bash
# cosign install script
shopt -s expand_aliases
if [ -z "$NO_COLOR" ]; then
alias log_info="echo -e \"\033[1;32mINFO\033[0m:\""
alias log_error="echo -e \"\033[1;31mERROR\033[0m:\""
else
alias log_info="echo \"INFO:\""
alias log_error="echo \"ERROR:\""
fi
set -e
mkdir -p ${{ inputs.install-dir }}
if [[ ${{ inputs.cosign-release }} == "main" ]]; then
log_info "installing cosign via 'go install' from its main version"
GOBIN=$(go env GOPATH)/bin
go install github.com/sigstore/cosign/cmd/cosign@main
ln -s $GOBIN/cosign ${{ inputs.install-dir}}/cosign
exit 0
fi
shaprog() {
case ${{ runner.os }} in
Linux|linux)
sha256sum $1 | cut -d' ' -f1
;;
macOS|macos)
shasum -a256 $1 | cut -d' ' -f1
;;
Windows|windows)
powershell -command "(Get-FileHash $1 -Algorithm SHA256 | Select-Object -ExpandProperty Hash).ToLower()"
;;
*)
log_error "unsupported OS ${{ runner.os }}"
exit 1
;;
esac
}
bootstrap_version='v2.2.4'
bootstrap_linux_amd64_sha='97a6a1e15668a75fc4ff7a4dc4cb2f098f929cbea2f12faa9de31db6b42b17d7'
bootstrap_linux_arm_sha='ad0338117c8c97a555e48ee194f400aad56803aaa1f39f537a3ede9261bc9aa7'
bootstrap_linux_arm64_sha='658087351e1d4f9c396b5f59ee5437461c06128f4ce80ba899ccaa1c0b6a8a62'
bootstrap_darwin_amd64_sha='0e5a77a86115e4c00ba4243db01abceacb13cc06981c45e53ee71f2e1db8ce25'
bootstrap_darwin_arm64_sha='fcd310e64ecddc1eaa13fe814ac1c9fc02f6f9eacd9a58480ab8160eb8ca381e'
bootstrap_windows_amd64_sha='9e9b71bd3fa2a6abfa903b5f784d9ca0fbc29c563d2b084c1a82c593c2bab001'
cosign_executable_name=cosign
trap "popd >/dev/null" EXIT
pushd ${{ inputs.install-dir }} > /dev/null
case ${{ runner.os }} in
Linux|linux)
case ${{ runner.arch }} in
X64|amd64)
bootstrap_filename='cosign-linux-amd64'
bootstrap_sha=${bootstrap_linux_amd64_sha}
desired_cosign_filename='cosign-linux-amd64'
# v0.6.0 had different filename structures from all other releases
if [[ ${{ inputs.cosign-release }} == 'v0.6.0' ]]; then
desired_cosign_filename='cosign_linux_amd64_0.6.0_linux_amd64'
desired_cosign_v060_signature='cosign_linux_amd64_0.6.0_linux_amd64.sig'
fi
;;
ARM|arm)
bootstrap_filename='cosign-linux-arm'
bootstrap_sha=${bootstrap_linux_arm_sha}
desired_cosign_filename='cosign-linux-arm'
if [[ ${{ inputs.cosign-release }} == 'v0.6.0' ]]; then
log_error "linux-arm build not available at v0.6.0"
exit 1
fi
;;
ARM64|arm64)
bootstrap_filename='cosign-linux-arm64'
bootstrap_sha=${bootstrap_linux_arm64_sha}
desired_cosign_filename='cosign-linux-arm64'
if [[ ${{ inputs.cosign-release }} == 'v0.6.0' ]]; then
log_error "linux-arm64 build not available at v0.6.0"
exit 1
fi
;;
*)
log_error "unsupported architecture ${{ runner.arch }}"
exit 1
;;
esac
;;
macOS|macos)
case ${{ runner.arch }} in
X64|amd64)
bootstrap_filename='cosign-darwin-amd64'
bootstrap_sha=${bootstrap_darwin_amd64_sha}
desired_cosign_filename='cosign-darwin-amd64'
# v0.6.0 had different filename structures from all other releases
if [[ ${{ inputs.cosign-release }} == 'v0.6.0' ]]; then
desired_cosign_filename='cosign_darwin_amd64_0.6.0_darwin_amd64'
desired_cosign_v060_signature='cosign_darwin_amd64_0.6.0_darwin_amd64.sig'
fi
;;
ARM64|arm64)
bootstrap_filename='cosign-darwin-arm64'
bootstrap_sha=${bootstrap_darwin_arm64_sha}
desired_cosign_filename='cosign-darwin-arm64'
# v0.6.0 had different filename structures from all other releases
if [[ ${{ inputs.cosign-release }} == 'v0.6.0' ]]; then
desired_cosign_filename='cosign_darwin_arm64_0.6.0_darwin_arm64'
desired_cosign_v060_signature='cosign_darwin_arm64_0.6.0_darwin_arm64.sig'
fi
;;
*)
log_error "unsupported architecture ${{ runner.arch }}"
exit 1
;;
esac
;;
Windows|windows)
case ${{ runner.arch }} in
X64|amd64)
bootstrap_filename='cosign-windows-amd64.exe'
bootstrap_sha=${bootstrap_windows_amd64_sha}
desired_cosign_filename='cosign-windows-amd64.exe'
cosign_executable_name=cosign.exe
# v0.6.0 had different filename structures from all other releases
if [[ ${{ inputs.cosign-release }} == 'v0.6.0' ]]; then
desired_cosign_filename='cosign_windows_amd64_0.6.0_windows_amd64.exe'
desired_cosign_v060_signature='cosign_windows_amd64_0.6.0_windows_amd64.exe.sig'
fi
;;
*)
log_error "unsupported architecture ${{ runner.arch }}"
exit 1
;;
esac
;;
*)
log_error "unsupported os ${{ runner.os }}"
exit 1
;;
esac
SUDO=
if [[ "${{ inputs.use-sudo }}" == "true" ]] && command -v sudo >/dev/null; then
SUDO=sudo
fi
expected_bootstrap_version_digest=${bootstrap_sha}
log_info "Downloading bootstrap version '${bootstrap_version}' of cosign to verify version to be installed...\n https://github.com/sigstore/cosign/releases/download/${bootstrap_version}/${bootstrap_filename}"
$SUDO curl -sL https://github.com/sigstore/cosign/releases/download/${bootstrap_version}/${bootstrap_filename} -o ${cosign_executable_name}
shaBootstrap=$(shaprog ${cosign_executable_name});
if [[ $shaBootstrap != ${expected_bootstrap_version_digest} ]]; then
log_error "Unable to validate cosign version: '${{ inputs.cosign-release }}'"
exit 1
fi
$SUDO chmod +x ${cosign_executable_name}
# If the bootstrap and specified `cosign` releases are the same, we're done.
if [[ ${{ inputs.cosign-release }} == ${bootstrap_version} ]]; then
log_info "bootstrap version successfully verified and matches requested version so nothing else to do"
exit 0
fi
semver='^v([0-9]+\.){0,2}(\*|[0-9]+)(-?r?c?)(\.[0-9]+)$'
if [[ ${{ inputs.cosign-release }} =~ $semver ]]; then
log_info "Custom cosign version '${{ inputs.cosign-release }}' requested"
else
log_error "Unable to validate requested cosign version: '${{ inputs.cosign-release }}'"
exit 1
fi
# Download custom cosign
log_info "Downloading platform-specific version '${{ inputs.cosign-release }}' of cosign...\n https://github.com/sigstore/cosign/releases/download/${{ inputs.cosign-release }}/${desired_cosign_filename}"
$SUDO curl -sL https://github.com/sigstore/cosign/releases/download/${{ inputs.cosign-release }}/${desired_cosign_filename} -o cosign_${{ inputs.cosign-release }}
shaCustom=$(shaprog cosign_${{ inputs.cosign-release }});
# same hash means it is the same release
if [[ $shaCustom != $shaBootstrap ]]; then
if [[ ${{ inputs.cosign-release }} == 'v0.6.0' && ${{ runner.os }} == 'Linux' ]]; then
# v0.6.0's linux release has a dependency on `libpcsclite1`
log_info "Installing libpcsclite1 package if necessary..."
set +e
sudo dpkg -s libpcsclite1
if [ $? -eq 0 ]; then
log_info "libpcsclite1 package is already installed"
else
log_info "libpcsclite1 package is not installed, installing it now."
sudo apt-get update -q -q
sudo apt-get install -yq libpcsclite1
fi
set -e
fi
if [[ ${{ inputs.cosign-release }} == 'v0.6.0' ]]; then
log_info "Downloading detached signature for platform-specific '${{ inputs.cosign-release }}' of cosign...\n https://github.com/sigstore/cosign/releases/download/${{ inputs.cosign-release }}/${desired_cosign_v060_signature}"
$SUDO curl -sL https://github.com/sigstore/cosign/releases/download/${{ inputs.cosign-release }}/${desired_cosign_v060_signature} -o ${desired_cosign_filename}.sig
else
log_info "Downloading detached signature for platform-specific '${{ inputs.cosign-release }}' of cosign...\n https://github.com/sigstore/cosign/releases/download/${{ inputs.cosign-release }}/${desired_cosign_filename}.sig"
$SUDO curl -sLO https://github.com/sigstore/cosign/releases/download/${{ inputs.cosign-release }}/${desired_cosign_filename}.sig
fi
if [[ ${{ inputs.cosign-release }} < 'v0.6.0' ]]; then
log_info "Downloading cosign public key '${{ inputs.cosign-release }}' of cosign...\n https://raw.githubusercontent.com/sigstore/cosign/${{ inputs.cosign-release }}/.github/workflows/cosign.pub"
RELEASE_COSIGN_PUB_KEY=https://raw.githubusercontent.com/sigstore/cosign/${{ inputs.cosign-release }}/.github/workflows/cosign.pub
else
log_info "Downloading cosign public key '${{ inputs.cosign-release }}' of cosign...\n https://raw.githubusercontent.com/sigstore/cosign/${{ inputs.cosign-release }}/release/release-cosign.pub"
RELEASE_COSIGN_PUB_KEY=https://raw.githubusercontent.com/sigstore/cosign/${{ inputs.cosign-release }}/release/release-cosign.pub
fi
log_info "Using bootstrap cosign to verify signature of desired cosign version"
./cosign verify-blob --insecure-ignore-tlog --key $RELEASE_COSIGN_PUB_KEY --signature ${desired_cosign_filename}.sig cosign_${{ inputs.cosign-release }}
$SUDO rm cosign
$SUDO mv cosign_${{ inputs.cosign-release }} ${cosign_executable_name}
$SUDO chmod +x ${cosign_executable_name}
log_info "Installation complete!"
fi
- if: ${{ runner.os == 'Linux' || runner.os == 'macOS' }}
run: echo "${{ inputs.install-dir }}" >> $GITHUB_PATH
shell: bash
- if: ${{ runner.os == 'Windows' }}
run: echo "${{ inputs.install-dir }}" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
shell: pwsh