janus/get-windows.sh at master · ETCDEVTeam/janus · GitHub

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#!/bin/sh

# Sources cited:
# - https://raw.githubusercontent.com/goreleaser/get/master/get

# Use:
#
# Install janus executable to system PATH.
#
# curl -sL https://raw.githubusercontent.com/ETCDEVTeam/janus/master/get.sh | bash
# export PATH=$PATH:$PWD/janusbin

set -e

TAR_FILE="/tmp/janus.zip"
TAR_FILE_SIG="/tmp/janus.zip.sig"
ISAAC_GPG_FILE="/tmp/isaac-gpg.txt"
ISAAC_GPG_URL="https://raw.githubusercontent.com/ethereumproject/volunteer/7a78a94307d67a0b20e418568b7bccac83c3d143/Volunteer-Public-Keys/isaac.ardis%40gmail.com"
DOWNLOAD_URL="https://github.com/ETCDEVTeam/janus/releases/download"
test -z "$TMPDIR" && TMPDIR="$(mktemp -d)"

# Hardcode to override appveyor system names. (ie MSYS_*blah_wahtever)
WINDOWS_EXT="Windows_x86_64.zip"

last_version() {
  # The new and improved sans-GithubAPI-rate-limited curler.
  # https://github.com/goreleaser/goreleaser/issues/157
  curl -sL -o /dev/null -w %{url_effective} https://github.com/ETCDEVTeam/janus/releases/latest | rev | cut -f1 -d'/'| rev
}

download() {
  test -z "$VERSION" && VERSION="$(last_version)"
  test -z "$VERSION" && {
    echo "Unable to get janus version." >&2
    exit 1
  }
  echo "Version: $VERSION"
  rm -f "$TAR_FILE"
  download_target="$DOWNLOAD_URL/$VERSION/janus_${VERSION}_$WINDOWS_EXT"
  echo "Downloading Janus: $download_target"
  curl -s -L -o "$TAR_FILE" \
    "$download_target"

  # Get and verify signature.
  rm -f "$TAR_FILE_SIG"
  sig_target="$DOWNLOAD_URL/$VERSION/janus_${VERSION}_$WINDOWS_EXT.sig"
  echo "Downloading signature: $sig_target"
  curl -s -L -o "$TAR_FILE_SIG" \
    "$sig_target"

  # Ensure our newly downloaded files exists.
  if ! [ -f "$TAR_FILE" ]; then
          echo "Tar file not found."
          exit 1
  fi
  if ! [ -f "$TAR_FILE_SIG" ]; then
          echo "Tar sig file not found."
          exit 1
  fi
}

verify() {
  # Verify signature if gpg is available.
  if command -v gpg 2> /dev/null; then
          echo "Downloading Isaac's key file: $ISAAC_GPG_URL"
          curl -s -L -o "$ISAAC_GPG_FILE" \
            "$ISAAC_GPG_URL"

          gpg --import "$ISAAC_GPG_FILE"
          gpg --verify "$TAR_FILE_SIG" "$TAR_FILE"
  fi
}

install() {
  echo "Extracting janus..."
  7z e "$TAR_FILE" janus.exe -y

  echo "Moving 'janus' binary to ./janusbin/janus"
  mkdir janusbin
  mv janus.exe janusbin/

  echo "Please ensure janus is added to PATH."
  echo "Use:"
  echo " - export PATH=$PATH:$PWD/janusbin"
}

download
verify
install