first commit

entrypoint.sh

@@ -0,0 +1,116 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+export GITHUB="true"
+
+GITHUB_ACTION_PATH="${GITHUB_ACTION_PATH%/}"
+DRONE_SSH_RELEASE_URL="${DRONE_SSH_RELEASE_URL:-https://github.com/appleboy/drone-ssh/releases/download}"
+DRONE_SSH_VERSION="${DRONE_SSH_VERSION:-1.8.4}"
+
+# Error codes
+readonly ERR_UNKNOWN_PLATFORM=2
+readonly ERR_UNKNOWN_ARCH=3
+readonly ERR_DOWNLOAD_FAILED=4
+readonly ERR_INVALID_BINARY=5
+readonly ERR_VERSION_CHECK_FAILED=6
+
+function log_error() {
+  echo "$1" >&2
+  exit "$2"
+}
+
+function detect_client_info() {
+  CLIENT_PLATFORM="${SSH_CLIENT_OS:-$(uname -s | tr '[:upper:]' '[:lower:]')}"
+  CLIENT_ARCH="${SSH_CLIENT_ARCH:-$(uname -m)}"
+
+  case "${CLIENT_PLATFORM}" in
+  darwin | linux | windows) ;;
+  # Git Bash / MSYS2 / Cygwin on Windows runners report e.g. MINGW64_NT-10.0
+  mingw* | msys* | cygwin*) CLIENT_PLATFORM="windows" ;;
+  *) log_error "Unknown or unsupported platform: ${CLIENT_PLATFORM}. Supported platforms are Linux, Darwin, and Windows." "${ERR_UNKNOWN_PLATFORM}" ;;
+  esac
+
+  case "${CLIENT_ARCH}" in
+  x86_64* | i?86_64* | amd64*) CLIENT_ARCH="amd64" ;;
+  aarch64* | arm64*) CLIENT_ARCH="arm64" ;;
+  *) log_error "Unknown or unsupported architecture: ${CLIENT_ARCH}. Supported architectures are x86_64, i686, and arm64." "${ERR_UNKNOWN_ARCH}" ;;
+  esac
+}
+
+detect_client_info
+DOWNLOAD_URL_PREFIX="${DRONE_SSH_RELEASE_URL}/v${DRONE_SSH_VERSION}"
+CLIENT_BINARY="drone-ssh-${DRONE_SSH_VERSION}-${CLIENT_PLATFORM}-${CLIENT_ARCH}"
+# Windows release assets are published with an .exe suffix
+if [[ "${CLIENT_PLATFORM}" == "windows" ]]; then
+  CLIENT_BINARY="${CLIENT_BINARY}.exe"
+fi
+TARGET="${GITHUB_ACTION_PATH}/${CLIENT_BINARY}"
+
+# Check if binary already exists and is executable (caching)
+if [[ -f "${TARGET}" ]] && [[ -x "${TARGET}" ]]; then
+  echo "Binary ${CLIENT_BINARY} already exists, skipping download"
+else
+  echo "Downloading ${CLIENT_BINARY} from ${DOWNLOAD_URL_PREFIX}"
+  INSECURE_OPTION=""
+  if [[ "${INPUT_CURL_INSECURE}" == 'true' ]]; then
+    INSECURE_OPTION="--insecure"
+  fi
+
+  # Download with better error handling
+  if ! curl -fsSL --retry 5 --keepalive-time 2 --location ${INSECURE_OPTION} \
+    "${DOWNLOAD_URL_PREFIX}/${CLIENT_BINARY}" -o "${TARGET}"; then
+    log_error "Failed to download ${CLIENT_BINARY} from ${DOWNLOAD_URL_PREFIX}. Please check the URL and your network connection." "${ERR_DOWNLOAD_FAILED}"
+  fi
+
+  # Validate downloaded file
+  if [[ ! -f "${TARGET}" ]] || [[ ! -s "${TARGET}" ]]; then
+    log_error "Downloaded file is missing or empty: ${TARGET}" "${ERR_INVALID_BINARY}"
+  fi
+
+  # Verify checksum; container jobs may lack shasum (Perl) or sha256sum, so
+  # detect an available tool and skip verification with a warning if none exists
+  SHA256_CMD=""
+  if command -v shasum >/dev/null 2>&1; then
+    SHA256_CMD="shasum -a 256"
+  elif command -v sha256sum >/dev/null 2>&1; then
+    SHA256_CMD="sha256sum"
+  else
+    echo "Warning: neither shasum nor sha256sum is available, skipping checksum verification" >&2
+  fi
+
+  if [[ -n "${SHA256_CMD}" ]]; then
+    CHECKSUMS_FILE="${GITHUB_ACTION_PATH}/checksums.txt"
+    if ! curl -fsSL --retry 5 --keepalive-time 2 --location ${INSECURE_OPTION} \
+      "${DOWNLOAD_URL_PREFIX}/checksums.txt" -o "${CHECKSUMS_FILE}"; then
+      log_error "Failed to download checksums.txt from ${DOWNLOAD_URL_PREFIX}." "${ERR_DOWNLOAD_FAILED}"
+    fi
+
+    EXPECTED_CHECKSUM=$(awk -v bin="${CLIENT_BINARY}" '$2 == bin {print $1}' "${CHECKSUMS_FILE}")
+    if [[ -z "${EXPECTED_CHECKSUM}" ]]; then
+      log_error "No checksum entry found for ${CLIENT_BINARY} in checksums.txt." "${ERR_INVALID_BINARY}"
+    fi
+
+    ACTUAL_CHECKSUM=$(${SHA256_CMD} "${TARGET}" | awk '{print $1}')
+    if [[ "${ACTUAL_CHECKSUM}" != "${EXPECTED_CHECKSUM}" ]]; then
+      log_error "Checksum verification failed for ${CLIENT_BINARY}: expected ${EXPECTED_CHECKSUM}, got ${ACTUAL_CHECKSUM}." "${ERR_INVALID_BINARY}"
+    fi
+    echo "Checksum verification passed for ${CLIENT_BINARY}"
+    rm -f "${CHECKSUMS_FILE}"
+  fi
+
+  chmod +x "${TARGET}"
+fi
+
+echo "======= CLI Version Information ======="
+if ! "${TARGET}" --version; then
+  log_error "Failed to execute ${TARGET} --version. The binary may be corrupted." "${ERR_VERSION_CHECK_FAILED}"
+fi
+echo "======================================="
+if [[ "${INPUT_CAPTURE_STDOUT}" == 'true' ]]; then
+  echo 'stdout<<EOF' >> "${GITHUB_OUTPUT}"
+  "${TARGET}" "$@" | tee -a "${GITHUB_OUTPUT}"
+  echo 'EOF' >> "${GITHUB_OUTPUT}"
+else
+  "${TARGET}" "$@"
+fi