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author | David Heinemeier Hansson <david@loudthinking.com> | 2017-09-11 13:21:20 -0500 |
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committer | Kasper Timm Hansen <kaspth@gmail.com> | 2017-09-11 20:21:20 +0200 |
commit | 69f976b859cae7f9d050152103da018b7f5dda6d (patch) | |
tree | fdb2437de4931d5362763f730dc28fa53e147b11 /railties/lib/rails/generators | |
parent | 80573a099e9974173a2f6d9a1ca81c7cc53ed3f4 (diff) | |
download | rails-69f976b859cae7f9d050152103da018b7f5dda6d.tar.gz rails-69f976b859cae7f9d050152103da018b7f5dda6d.tar.bz2 rails-69f976b859cae7f9d050152103da018b7f5dda6d.zip |
Add credentials using a generic EncryptedConfiguration class (#30067)
* WIP: Add credentials using a generic EncryptedConfiguration class
This is sketch code so far.
* Flesh out EncryptedConfiguration and test it
* Better name
* Add command and generator for credentials
* Use the Pathnames
* Extract EncryptedFile from EncryptedConfiguration and add serializers
* Test EncryptedFile
* Extract serializer validation
* Stress the point about losing comments
* Allow encrypted configuration to be read without parsing for display
* Use credentials by default and base them on the master key
* Derive secret_key_base in test/dev, source it from credentials in other envs
And document the usage.
* Document the new credentials setup
* Stop generating the secrets.yml file now that we have credentials
* Document what we should have instead
Still need to make it happen, tho.
* [ci skip] Keep wording to `key base`; prefer defaults.
Usually we say we change defaults, not "spec" out a release.
Can't use backticks in our sdoc generated documentation either.
* Abstract away OpenSSL; prefer MessageEncryptor.
* Spare needless new when raising.
* Encrypted file test shouldn't depend on subclass.
* [ci skip] Some woordings.
* Ditch serializer future coding.
* I said flip it. Flip it good.
* [ci skip] Move require_master_key to the real production.rb.
* Add require_master_key to abort the boot process.
In case the master key is required in a certain environment
we should inspect that the key is there and abort if it isn't.
* Print missing key message and exit immediately.
Spares us a lengthy backtrace and prevents further execution.
I've verified the behavior in a test app, but couldn't figure the
test out as loading the app just exits immediately with:
```
/Users/kasperhansen/Documents/code/rails/activesupport/lib/active_support/testing/isolation.rb:23:in `load': marshal data too short (ArgumentError)
from /Users/kasperhansen/Documents/code/rails/activesupport/lib/active_support/testing/isolation.rb:23:in `run'
from /Users/kasperhansen/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/minitest-5.10.2/lib/minitest.rb:830:in `run_one_method'
from /Users/kasperhansen/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/minitest-5.10.2/lib/minitest/parallel.rb:32:in `block (2 levels) in start'
```
It's likely we need to capture and prevent the exit somehow.
Kernel.stub(:exit) didn't work. Leaving it for tomorrow.
* Fix require_master_key config test.
Loading the app would trigger the `exit 1` per require_master_key's
semantics, which then aborted the test.
Fork and wait for the child process to finish, then inspect the
exit status.
Also check we aborted because of a missing master key, so something
else didn't just abort the boot.
Much <3 to @tenderlove for the tip.
* Support reading/writing configs via methods.
* Skip needless deep symbolizing.
* Remove save; test config reader elsewhere.
* Move secret_key_base check to when we're reading it.
Otherwise we'll abort too soon since we don't assign the secret_key_base
to secrets anymore.
* Add missing string literal comments; require unneeded yaml require.
* ya ya ya, rubocop.
* Add master_key/credentials after bundle.
Then we can reuse the existing message on `rails new bc4`.
It'll look like:
```
Using web-console 3.5.1 from https://github.com/rails/web-console.git (at master@ce985eb)
Using rails 5.2.0.alpha from source at `/Users/kasperhansen/Documents/code/rails`
Using sass-rails 5.0.6
Bundle complete! 16 Gemfile dependencies, 72 gems now installed.
Use `bundle info [gemname]` to see where a bundled gem is installed.
Adding config/master.key to store the master encryption key: 97070158c44b4675b876373a6bc9d5a0
Save this in a password manager your team can access.
If you lose the key, no one, including you, can access anything encrypted with it.
create config/master.key
```
And that'll be executed even if `--skip-bundle` was passed.
* Ensure test app has secret_key_base.
* Assign secret_key_base to app or omit.
* Merge noise
* Split options for dynamic delegation into its own method and use deep symbols to make it work
* Update error to point to credentials instead
* Appease Rubocop
* Validate secret_key_base when reading it.
Instead of relying on the validation in key_generator move that into
secret_key_base itself.
* Fix generator and secrets test.
Manually add config.read_encrypted_secrets since it's not there by default
anymore.
Move mentions of config/secrets.yml to config/credentials.yml.enc.
* Remove files I have no idea how they got here.
* [ci skip] swap secrets for credentials.
* [ci skip] And now, changelogs are coming.
Diffstat (limited to 'railties/lib/rails/generators')
5 files changed, 129 insertions, 5 deletions
diff --git a/railties/lib/rails/generators/rails/app/app_generator.rb b/railties/lib/rails/generators/rails/app/app_generator.rb index 0f73cc4755..c67baa5e91 100644 --- a/railties/lib/rails/generators/rails/app/app_generator.rb +++ b/railties/lib/rails/generators/rails/app/app_generator.rb @@ -111,7 +111,6 @@ module Rails template "routes.rb" template "application.rb" template "environment.rb" - template "secrets.yml" template "cable.yml" unless options[:skip_action_cable] template "puma.rb" unless options[:skip_puma] template "spring.rb" if spring_install? @@ -159,6 +158,22 @@ module Rails end end + def master_key + require_relative "../master_key/master_key_generator" + + after_bundle do + Rails::Generators::MasterKeyGenerator.new.add_master_key_file + end + end + + def credentials + require_relative "../credentials/credentials_generator" + + after_bundle do + Rails::Generators::CredentialsGenerator.new.add_credentials_file_silently + end + end + def database_yml template "config/databases/#{options[:database]}.yml", "config/database.yml" end @@ -289,6 +304,14 @@ module Rails end remove_task :update_config_files + def create_master_key + build(:master_key) + end + + def create_credentials + build(:credentials) + end + def display_upgrade_guide_info say "\nAfter this, check Rails upgrade guide at http://guides.rubyonrails.org/upgrading_ruby_on_rails.html for more details about upgrading your app." end diff --git a/railties/lib/rails/generators/rails/app/templates/config/environments/production.rb.tt b/railties/lib/rails/generators/rails/app/templates/config/environments/production.rb.tt index f68e13aa8b..2e0b555f6f 100644 --- a/railties/lib/rails/generators/rails/app/templates/config/environments/production.rb.tt +++ b/railties/lib/rails/generators/rails/app/templates/config/environments/production.rb.tt @@ -14,10 +14,9 @@ Rails.application.configure do config.consider_all_requests_local = false config.action_controller.perform_caching = true - # Attempt to read encrypted secrets from `config/secrets.yml.enc`. - # Requires an encryption key in `ENV["RAILS_MASTER_KEY"]` or - # `config/secrets.yml.key`. - config.read_encrypted_secrets = true + # Ensures that a master key has been made available in either ENV["RAILS_MASTER_KEY"] + # or in config/master.key. This key is used to decrypt credentials (and other encrypted files). + # config.require_master_key = true # Disable serving static files from the `/public` folder by default since # Apache or NGINX already handles this. diff --git a/railties/lib/rails/generators/rails/app/templates/gitignore b/railties/lib/rails/generators/rails/app/templates/gitignore index 83a7b211aa..c37f01a848 100644 --- a/railties/lib/rails/generators/rails/app/templates/gitignore +++ b/railties/lib/rails/generators/rails/app/templates/gitignore @@ -7,6 +7,9 @@ # Ignore bundler config. /.bundle +# Ignore master key for decrypting credentials and more. +/config/master.key + <% if sqlite3? -%> # Ignore the default SQLite database. /db/*.sqlite3 diff --git a/railties/lib/rails/generators/rails/credentials/credentials_generator.rb b/railties/lib/rails/generators/rails/credentials/credentials_generator.rb new file mode 100644 index 0000000000..ddcccd5ce5 --- /dev/null +++ b/railties/lib/rails/generators/rails/credentials/credentials_generator.rb @@ -0,0 +1,46 @@ +# frozen_string_literal: true + +require_relative "../../base" +require_relative "../master_key/master_key_generator" +require "active_support/encrypted_configuration" + +module Rails + module Generators + class CredentialsGenerator < Base + CONFIG_PATH = "config/credentials.yml.enc" + KEY_PATH = "config/master.key" + + def add_credentials_file + unless File.exist?(CONFIG_PATH) + template = credentials_template + + say "Adding #{CONFIG_PATH} to store encrypted credentials." + say "" + say "The following content has been encrypted with the Rails master key:" + say "" + say template, :on_green + say "" + + add_credentials_file_silently(template) + + say "You can edit encrypted credentials with `bin/rails credentials:edit`." + say "" + end + end + + def add_credentials_file_silently(template = nil) + unless File.exist?(CONFIG_PATH) + setup = { config_path: CONFIG_PATH, key_path: KEY_PATH, env_key: "RAILS_MASTER_KEY" } + ActiveSupport::EncryptedConfiguration.new(setup).write(credentials_template) + end + end + + private + def credentials_template + "# amazon:\n# access_key_id: 123\n# secret_access_key: 345\n\n" + + "# Used as the base secret for all MessageVerifiers in Rails, including the one protecting cookies.\n" + + "secret_key_base: #{SecureRandom.hex(64)}" + end + end + end +end diff --git a/railties/lib/rails/generators/rails/master_key/master_key_generator.rb b/railties/lib/rails/generators/rails/master_key/master_key_generator.rb new file mode 100644 index 0000000000..36a0b69e76 --- /dev/null +++ b/railties/lib/rails/generators/rails/master_key/master_key_generator.rb @@ -0,0 +1,53 @@ +# frozen_string_literal: true + +require_relative "../../base" +require "pathname" +require "active_support/encrypted_file" + +module Rails + module Generators + class MasterKeyGenerator < Base + MASTER_KEY_PATH = Pathname.new("config/master.key") + + def add_master_key_file + unless MASTER_KEY_PATH.exist? + key = ActiveSupport::EncryptedFile.generate_key + + say "Adding #{MASTER_KEY_PATH} to store the master encryption key: #{key}" + say "" + say "Save this in a password manager your team can access." + say "" + say "If you lose the key, no one, including you, can access anything encrypted with it." + + say "" + add_master_key_file_silently key + say "" + end + end + + def add_master_key_file_silently(key = nil) + create_file MASTER_KEY_PATH, key || ActiveSupport::EncryptedFile.generate_key + end + + def ignore_master_key_file + if File.exist?(".gitignore") + unless File.read(".gitignore").include?(key_ignore) + say "Ignoring #{MASTER_KEY_PATH} so it won't end up in Git history:" + say "" + append_to_file ".gitignore", key_ignore + say "" + end + else + say "IMPORTANT: Don't commit #{MASTER_KEY_PATH}. Add this to your ignore file:" + say key_ignore, :on_green + say "" + end + end + + private + def key_ignore + [ "", "# Ignore master key for decrypting credentials and more.", MASTER_KEY_PATH, "" ].join("\n") + end + end + end +end |