feat: add Bitwarden Secrets Manager adapter

lib/kamal/secrets/adapters.rb

@@ -3,6 +3,7 @@ module Kamal::Secrets::Adapters
   def self.lookup(name)
     name = "one_password" if name.downcase == "1password"
     name = "last_pass" if name.downcase == "lastpass"
+    name = "bitwarden_secrets_manager" if name.downcase == "bitwarden-sm"
     adapter_class(name)
   end
 

lib/kamal/secrets/adapters/bitwarden_secrets_manager.rb

@@ -0,0 +1,67 @@
+class Kamal::Secrets::Adapters::BitwardenSecretsManager < Kamal::Secrets::Adapters::Base
+  def requires_account?
+    false
+  end
+
+  private
+    LIST_ALL_SELECTOR = "all"
+    LIST_ALL_FROM_PROJECT_SUFFIX = "/all"
+    LIST_COMMAND = "secret list -o env"
+    GET_COMMAND = "secret get -o env"
+
+    def fetch_secrets(secrets, account:, session:)
+      raise RuntimeError, "You must specify what to retrieve from Bitwarden Secrets Manager" if secrets.length == 0
+
+      if secrets.length == 1
+        if secrets[0] == LIST_ALL_SELECTOR
+          command = LIST_COMMAND
+        elsif secrets[0].end_with?(LIST_ALL_FROM_PROJECT_SUFFIX)
+          project = secrets[0].split(LIST_ALL_FROM_PROJECT_SUFFIX).first
+          command = "#{LIST_COMMAND} #{project}"
+        end
+      end
+
+      {}.tap do |results|
+        if command.nil?
+          secrets.each do |secret_uuid|
+            secret = run_command("#{GET_COMMAND} #{secret_uuid}")
+            raise RuntimeError, "Could not read #{secret_uuid} from Bitwarden Secrets Manager" unless $?.success?
+            key, value = parse_secret(secret)
+            results[key] = value
+          end
+        else
+          secrets = run_command(command)
+          raise RuntimeError, "Could not read secrets from Bitwarden Secrets Manager" unless $?.success?
+          secrets.split("\n").each do |secret|
+            key, value = parse_secret(secret)
+            results[key] = value
+          end
+        end
+      end
+    end
+
+    def parse_secret(secret)
+      key, value = secret.split("=", 2)
+      value = value.gsub(/^"|"$/, "")
+      [ key, value ]
+    end
+
+    def run_command(command, session: nil)
+      full_command = [ "bws", command ].join(" ")
+      `#{full_command}`
+    end
+
+    def login(account)
+      run_command("run 'echo OK'")
+      raise RuntimeError, "Could not authenticate to Bitwarden Secrets Manager. Did you set a valid access token?" unless $?.success?
+    end
+
+    def check_dependencies!
+      raise RuntimeError, "Bitwarden Secrets Manager CLI is not installed" unless cli_installed?
+    end
+
+    def cli_installed?
+      `bws --version 2> /dev/null`
+      $?.success?
+    end
+end

test/secrets/bitwarden_secrets_manager_adapter_test.rb

@@ -0,0 +1,119 @@
+require "test_helper"
+
+class BitwardenSecretsManagerAdapterTest < SecretAdapterTestCase
+  test "fetch with no parameters" do
+    stub_ticks.with("bws --version 2> /dev/null")
+    stub_login
+
+    error = assert_raises RuntimeError do
+      (shellunescape(run_command("fetch")))
+    end
+    assert_equal("You must specify what to retrieve from Bitwarden Secrets Manager", error.message)
+  end
+
+  test "fetch all" do
+    stub_ticks.with("bws --version 2> /dev/null")
+    stub_login
+    stub_ticks
+      .with("bws secret list -o env")
+      .returns("KAMAL_REGISTRY_PASSWORD=\"some_password\"\nMY_OTHER_SECRET=\"my=weird\"secret\"")
+
+    expected = '{"KAMAL_REGISTRY_PASSWORD":"some_password","MY_OTHER_SECRET":"my\=weird\"secret"}'
+    actual = shellunescape(run_command("fetch", "all"))
+    assert_equal expected, actual
+  end
+
+  test "fetch all with from" do
+    stub_ticks.with("bws --version 2> /dev/null")
+    stub_login
+    stub_ticks
+      .with("bws secret list -o env 82aeb5bd-6958-4a89-8197-eacab758acce")
+      .returns("KAMAL_REGISTRY_PASSWORD=\"some_password\"\nMY_OTHER_SECRET=\"my=weird\"secret\"")
+
+    expected = '{"KAMAL_REGISTRY_PASSWORD":"some_password","MY_OTHER_SECRET":"my\=weird\"secret"}'
+    actual = shellunescape(run_command("fetch", "all", "--from", "82aeb5bd-6958-4a89-8197-eacab758acce"))
+    assert_equal expected, actual
+  end
+
+  test "fetch item" do
+    stub_ticks.with("bws --version 2> /dev/null")
+    stub_login
+    stub_ticks
+      .with("bws secret get -o env 82aeb5bd-6958-4a89-8197-eacab758acce")
+      .returns("KAMAL_REGISTRY_PASSWORD=\"some_password\"")
+
+    expected = '{"KAMAL_REGISTRY_PASSWORD":"some_password"}'
+    actual = shellunescape(run_command("fetch", "82aeb5bd-6958-4a89-8197-eacab758acce"))
+    assert_equal expected, actual
+  end
+
+  test "fetch with multiple items" do
+    stub_ticks.with("bws --version 2> /dev/null")
+    stub_login
+    stub_ticks
+      .with("bws secret get -o env 82aeb5bd-6958-4a89-8197-eacab758acce")
+      .returns("KAMAL_REGISTRY_PASSWORD=\"some_password\"")
+    stub_ticks
+      .with("bws secret get -o env 6f8cdf27-de2b-4c77-a35d-07df8050e332")
+      .returns("MY_OTHER_SECRET=\"my=weird\"secret\"")
+
+    expected = '{"KAMAL_REGISTRY_PASSWORD":"some_password","MY_OTHER_SECRET":"my\=weird\"secret"}'
+    actual = shellunescape(run_command("fetch", "82aeb5bd-6958-4a89-8197-eacab758acce", "6f8cdf27-de2b-4c77-a35d-07df8050e332"))
+    assert_equal expected, actual
+  end
+
+  test "fetch all empty" do
+    stub_ticks.with("bws --version 2> /dev/null")
+    stub_login
+    stub_ticks_with("bws secret list -o env", succeed: false).returns("Error:\n0: Received error message from server")
+
+    error = assert_raises RuntimeError do
+      (shellunescape(run_command("fetch", "all")))
+    end
+    assert_equal("Could not read secrets from Bitwarden Secrets Manager", error.message)
+  end
+
+  test "fetch nonexistent item" do
+    stub_ticks.with("bws --version 2> /dev/null")
+    stub_login
+    stub_ticks_with("bws secret get -o env 82aeb5bd-6958-4a89-8197-eacab758acce", succeed: false)
+      .returns("ERROR (RuntimeError): Could not read 82aeb5bd-6958-4a89-8197-eacab758acce from Bitwarden Secrets Manager")
+
+    error = assert_raises RuntimeError do
+      (shellunescape(run_command("fetch", "82aeb5bd-6958-4a89-8197-eacab758acce")))
+    end
+    assert_equal("Could not read 82aeb5bd-6958-4a89-8197-eacab758acce from Bitwarden Secrets Manager", error.message)
+  end
+
+  test "fetch with no access token" do
+    stub_ticks.with("bws --version 2> /dev/null")
+    stub_ticks_with("bws run 'echo OK'", succeed: false)
+
+    error = assert_raises RuntimeError do
+      (shellunescape(run_command("fetch", "all")))
+    end
+    assert_equal("Could not authenticate to Bitwarden Secrets Manager. Did you set a valid access token?", error.message)
+  end
+
+  test "fetch without CLI installed" do
+    stub_ticks_with("bws --version 2> /dev/null", succeed: false)
+
+    error = assert_raises RuntimeError do
+      shellunescape(run_command("fetch"))
+    end
+    assert_equal "Bitwarden Secrets Manager CLI is not installed", error.message
+  end
+
+  private
+    def stub_login
+      stub_ticks.with("bws run 'echo OK'").returns("OK")
+    end
+
+    def run_command(*command)
+      stdouted do
+        Kamal::Cli::Secrets.start \
+          [ *command,
+            "--adapter", "bitwarden-sm" ]
+      end
+    end
+end