Download the latest VS Code Server (official distribution)

download-vscode-server.sh

#!/bin/sh

# Note: consider using bash with "set -euo pipefail"
set -eu

# Decide whether to install the SSH remote server (-ssh),
# the web one (-web), or both (if no argument is given).
INSTALL_SSH=1
INSTALL_WEB=1
if [ "$#" -gt 0 ]; then
    INSTALL_SSH=0
    INSTALL_WEB=0
    for arg in "$@"; do
        case "$arg" in
            -ssh) INSTALL_SSH=1 ;;
            -web) INSTALL_WEB=1 ;;
            -h|-help|--help)
                printf 'Usage: %s [-ssh] [-web]\n' "$0" >&2
                exit 0
                ;;
            *)
                printf 'error: unknown option: %s\n' "$arg" >&2
                printf 'Usage: %s [-ssh] [-web]\n' "$0" >&2
                exit 1
                ;;
        esac
    done
fi

# If OSTYPE is not set (e.g. in sh), try to set it.
if [ -z "${OSTYPE:-}" ]; then
    OSTYPE="$(uname -s | tr '[:upper:]' '[:lower:]')"
fi
case "$OSTYPE" in
  linux*)   CODE_OS="linux";  CODE_CLI_OS="alpine" ;;
  darwin*)  CODE_OS="darwin"; CODE_CLI_OS="darwin" ;; 
  *) echo >&2 "error: OS ($OSTYPE) is not supported"; exit 1 ;;
esac

ARCH="$(uname -m)"
case "$ARCH" in
    amd64|x86_64)        CODE_ARCH="x64"   ;;
    arm64|aarch64|armv8) CODE_ARCH="arm64" ;;
    armv6|armv7)         CODE_ARCH="armhf" ;;
    *) echo >&2 "error: architecture ($ARCH) is not supported"; exit 1 ;;
esac

if [ "${CODE_CLI_OS}" = "darwin" ] && [ "${CODE_ARCH}" = "x64" ]; then
    CODE_PLATFORM="${CODE_CLI_OS}"
    CODE_CLI_PLATFORM="${CODE_CLI_OS}"
else
    CODE_PLATFORM="${CODE_OS}-${CODE_ARCH}"
    CODE_CLI_PLATFORM="${CODE_CLI_OS}-${CODE_ARCH}"
fi

TMP_FILES=""
cleanup() {
    rm -f ${TMP_FILES}
}
trap cleanup EXIT

# Note: bsdtar seems to have trouble preserving permissions when extracting from a pipe
downloadArchiveToDir() {
    FILE_URL=$1
    DEST_DIR=$2
    EXTRA_ARGS=${3:-}
    mkdir -p ${DEST_DIR}
    VSC_TMP_FILE=$(mktemp -t vsc_dl.XXXXXX)
    TMP_FILES="${TMP_FILES} ${VSC_TMP_FILE}"
    curl -sSL "${FILE_URL}" -o ${VSC_TMP_FILE}
    tar -xpf ${VSC_TMP_FILE} -C ${DEST_DIR} ${EXTRA_ARGS}
}

# Note: there are other ways to get the COMMIT_ID, but it's useful to have the full CLI anyway.
# Alternatives:
# - COMMIT_ID=$(curl -sL "https://update.code.visualstudio.com/api/latest/linux-x64/stable" | grep -oEi '"version":\s*"[a-f0-9]{40}"' | cut -d'"' -f4)
# - COMMIT_ID=$(curl -sL "https://update.code.visualstudio.com/api/latest/linux-x64/stable" | jq -r .version)
# - COMMIT_ID=$(curl -sIL "https://update.code.visualstudio.com/latest/server-linux-x64-web/stable" | grep -i location | grep -oE '[a-f0-9]{40}')
# And then, once we have the COMMIT_ID needed to create the correct output directory, we can just e.g.:
# - downloadArchiveToDir "https://update.code.visualstudio.com/latest/server-linux-x64-web/stable" "${CODE_SERVER_WEB_DIR}" "--strip-components 1"

echo "Downloading VS Code CLI..."
CODE_CLI_DIR=${HOME}/.vscode-cli/bin
CODE_CLI=${CODE_CLI_DIR}/code
downloadArchiveToDir "https://code.visualstudio.com/sha/download?build=stable&os=cli-${CODE_CLI_PLATFORM}" "${CODE_CLI_DIR}"
COMMIT_ID=$(${CODE_CLI} --version | grep -oE '[a-f0-9]{40}')

if [ "${INSTALL_SSH}" -eq 1 ]; then
    echo "Downloading VS Code Server..."
    CODE_SERVER_DIR=${HOME}/.vscode-server/bin/${COMMIT_ID}
    downloadArchiveToDir "https://update.code.visualstudio.com/commit:${COMMIT_ID}/server-${CODE_PLATFORM}/stable" "${CODE_SERVER_DIR}" "--strip-components 1"
fi

if [ "${INSTALL_WEB}" -eq 1 ]; then
    echo "Downloading VS Code Server Web..."
    CODE_SERVER_WEB_DIR=${HOME}/.vscode/cli/serve-web/${COMMIT_ID}
    downloadArchiveToDir "https://update.code.visualstudio.com/commit:${COMMIT_ID}/server-${CODE_PLATFORM}-web/stable" "${CODE_SERVER_WEB_DIR}" "--strip-components 1"
fi

echo "Done!"