fix,minor: safely handle env vars

make.sh

@@ -35,9 +35,9 @@ done <<< "$RB_GEM_LIST_OUTPUT"
 echo "[*] gitlab-license version: $RB_GEM_VERSION"
 RB_GEM_DOWNLOAD_URL="https://rubygems.org/downloads/gitlab-license-$RB_GEM_VERSION.gem"
 RB_GEM_DOWNLOAD_PATH=$(pwd)/temp/gem/gitlab-license.gem
-mkdir -p $(dirname $RB_GEM_DOWNLOAD_PATH)
+mkdir -p "$(dirname "$RB_GEM_DOWNLOAD_PATH")"
-curl -L $RB_GEM_DOWNLOAD_URL -o $RB_GEM_DOWNLOAD_PATH 1> /dev/null 2> /dev/null
+curl -L "$RB_GEM_DOWNLOAD_URL" -o "$RB_GEM_DOWNLOAD_PATH" 1>/dev/null 2>/dev/null
-pushd $(dirname $RB_GEM_DOWNLOAD_PATH) > /dev/null
+pushd "$(dirname "$RB_GEM_DOWNLOAD_PATH")" >/dev/null
 tar -xf gitlab-license.gem
 tar -xf data.tar.gz
 
@@ -47,9 +47,9 @@ if [ ! -f "./lib/gitlab/license.rb" ]; then
 fi
 
 echo "[*] copying gem..."
-rm -rf "$WORKING_DIR/lib" || true
+rm -rf "${WORKING_DIR:?}/lib" || true
 mkdir -p "$WORKING_DIR/lib"
-cp -r ./lib/gitlab/* $WORKING_DIR/lib
+cp -r ./lib/gitlab/* "$WORKING_DIR/lib"
 popd >/dev/null
 
 pushd lib >/dev/null
@@ -60,16 +60,19 @@ OS_TYPE="$(uname -s)"
 
 case "$OS_TYPE" in
 Linux*)
-        sed_i_cmd="sed -i";;
+    sed_i_cmd="sed -i"
+    ;;
 Darwin*)
-        sed_i_cmd="sed -i ''";;
+    sed_i_cmd="sed -i ''"
+    ;;
 *)
-        echo "Unsupported OS: $OS_TYPE";
+    echo "Unsupported OS: $OS_TYPE"
-        exit 1;;
+    exit 1
+    ;;
 esac
 
 # replace `require 'gitlab/license/` with `require 'license/` to make it work
-find . -type f -exec $sed_i_cmd 's/require '\''gitlab\/license\//require_relative '\''license\//g' {} \;
+find . -type f -exec "$sed_i_cmd" 's/require '\''gitlab\/license\//require_relative '\''license\//g' {} \;
 
 popd >/dev/null
 
@@ -82,22 +85,21 @@ mkdir -p "$GITLAB_SOURCE_CODE_DIR"
 echo "[*] downloading features file..."
 curl -L https://gitlab.com/gitlab-org/gitlab/-/raw/master/ee/app/models/gitlab_subscriptions/features.rb?inline=false -o "$GITLAB_SOURCE_CODE_DIR/features.rb"
 
-
 BUILD_DIR=$(pwd)/build
-mkdir -p $BUILD_DIR
+mkdir -p "$BUILD_DIR"
 
 echo "[*] scanning features..."
 FEATURE_LIST_FILE=$BUILD_DIR/features.json
-rm -f $FEATURE_LIST_FILE || true
+rm -f "${FEATURE_LIST_FILE:?}" || true
 ./src/scan.features.rb \
-    -o $FEATURE_LIST_FILE \
+    -o "$FEATURE_LIST_FILE" \
     -f "$GITLAB_SOURCE_CODE_DIR/features.rb"
 
 echo "[*] generating key pair..."
 PUBLIC_KEY_FILE=$BUILD_DIR/public.key
 PRIVATE_KEY_FILE=$BUILD_DIR/private.key
-cp -f ./keys/public.key $PUBLIC_KEY_FILE
+cp -f ./keys/public.key "$PUBLIC_KEY_FILE"
-cp -f ./keys/private.key $PRIVATE_KEY_FILE
+cp -f ./keys/private.key "$PRIVATE_KEY_FILE"
 
 # execute following command to generate new keys
 # ./src/generator.keys.rb \
@@ -109,16 +111,16 @@ LICENSE_FILE=$BUILD_DIR/result.gitlab-license
 LICENSE_JSON_FILE=$BUILD_DIR/license.json
 
 ./src/generator.license.rb \
-    -f $FEATURE_LIST_FILE \
+    -f "$FEATURE_LIST_FILE" \
-    --public-key $PUBLIC_KEY_FILE \
+    --public-key "$PUBLIC_KEY_FILE" \
-    --private-key $PRIVATE_KEY_FILE \
+    --private-key "$PRIVATE_KEY_FILE" \
-    -o $LICENSE_FILE \
+    -o "$LICENSE_FILE" \
     --license-name "$LICENSE_NAME" \
     --license-company "$LICENSE_COMPANY" \
     --license-email "$LICENSE_EMAIL" \
     --license-plan "$LICENSE_PLAN" \
     --license-user-count "$LICENSE_USER_COUNT" \
     --license-expire-year "$LICENSE_EXPIRE_YEAR" \
-    --plain-license $LICENSE_JSON_FILE
+    --plain-license "$LICENSE_JSON_FILE"
 
-echo "[*] done $(basename $0)"
+echo "[*] done $(basename "$0")"