Remove obsolete script

It's used in the code for escaping only parts of URLs

.drone.yml

@@ -0,0 +1,16 @@
+kind: pipeline
+name: default
+
+steps:
+- name: specs
+  image: ruby
+  environment:
+    REDIS_HOST: redis
+  commands:
+  - cp config.yml.erb.example config.yml.erb
+  - bundle install --jobs=3 --retry=3
+  - bundle exec rake test
+
+services:
+  - name: redis
+    image: redis

.github/workflows/ruby.yml

@@ -1,33 +0,0 @@
-name: Tests
-
-on:
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
-
-permissions:
-  contents: read
-
-jobs:
-  test:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        ruby-version: ['2.7', '3.0', '3.1']
-        redis-version: [6, 7]
-    steps:
-    - uses: actions/checkout@v3
-    - name: Set up Ruby
-      uses: ruby/setup-ruby@v1
-      with:
-        ruby-version: ${{ matrix.ruby-version }}
-        bundler-cache: true # runs 'bundle install' and caches installed gems automatically
-    - name: Start Redis
-      uses: supercharge/redis-github-action@1.4.0
-      with:
-        redis-version: ${{ matrix.redis-version }}
-    - name: Configure
-      run: cp config.yml.example.s3 config.yml
-    - name: Run tests
-      run: bundle exec rake test

.gitignore

@@ -1,4 +1,5 @@
 config.yml
+config.yml.erb
 cs_credentials.json
 pids
 .bundle

Dockerfile

@@ -0,0 +1,13 @@
+FROM ruby:3.1.4
+
+WORKDIR /liquorcabinet
+ENV RACK_ENV=production
+
+COPY Gemfile Gemfile.lock /liquorcabinet/
+RUN bundle install
+COPY . /liquorcabinet
+COPY ./config.yml.erb.example /liquorcabinet/config.yml.erb
+
+EXPOSE 4567
+
+CMD ["bundle", "exec", "rainbows", "--listen", "0.0.0.0:4567"]

Gemfile

@@ -3,22 +3,21 @@ source "https://rubygems.org"
 gem "sinatra", "~> 2.2.0"
 gem "sinatra-contrib", "~> 2.2.0"
 gem "activesupport", "~> 6.1.0"
-gem "rest-client", "~> 2.1.0"
 gem "redis", "~> 4.6.0"
-# Remove require when we can update to 3.0, which sets the new storage
+gem "rest-client", "~> 2.1.0"
-# format to columnar by default. Increases performance
+gem "aws-sigv4", "~> 1.0.0"
 gem "mime-types"
+gem "rainbows"
 
 group :test do
   gem 'rake'
   gem 'rack-test'
-  gem 'purdytest', :require => false
   gem 'm'
+  gem 'minitest'
   gem 'minitest-stub_any_instance'
   gem 'webmock'
 end
 
 group :staging, :production do
-  gem "rainbows"
   gem "sentry-raven", require: false
 end

Gemfile.lock

@@ -9,6 +9,7 @@ GEM
       zeitwerk (~> 2.3)
     addressable (2.8.5)
       public_suffix (>= 2.0.2, < 6.0)
+    aws-sigv4 (1.0.3)
     base64 (0.1.1)
     concurrent-ruby (1.2.2)
     crack (0.4.5)
@@ -41,8 +42,6 @@ GEM
       ruby2_keywords (~> 0.0.1)
     netrc (0.11.0)
     public_suffix (5.0.3)
-    purdytest (2.0.0)
-      minitest (~> 5.5)
     rack (2.2.8)
     rack-protection (2.2.4)
       rack
@@ -95,10 +94,11 @@ PLATFORMS
 
 DEPENDENCIES
   activesupport (~> 6.1.0)
+  aws-sigv4 (~> 1.0.0)
   m
   mime-types
+  minitest
   minitest-stub_any_instance
-  purdytest
   rack-test
   rainbows
   rake

README.md

@@ -1,21 +1,54 @@
-[![Build Status](https://github.com/5apps/liquor-cabinet/actions/workflows/ruby.yml/badge.svg)](https://github.com/5apps/liquor-cabinet/actions/workflows/ruby.yml)
+[![Build Status](https://drone.kosmos.org/api/badges/5apps/liquor-cabinet/status.svg)](https://drone.kosmos.org/5apps/liquor-cabinet)
 
 # Liquor Cabinet
 
 Liquor Cabinet is where Frank stores all his stuff. It's a
 [remoteStorage](https://remotestorage.io) HTTP API, based on Sinatra. The
-metadata and OAuth tokens are stored in Redis, and documents can be stored in
+metadata and OAuth tokens are stored in Redis, and
-anything that supports the storage API of either Openstack Swift or Amazon S3.
+documents/files can be stored in anything that supports
+the S3 object storage API.
 
 Liquor Cabinet only implements the storage API part of the remoteStorage
 protocol, but does not include the Webfinger and OAuth parts. It is meant to be
 added to existing systems and user accounts, so you will have to add your own
 OAuth dialog for remoteStorage authorizations and persist the tokens in Redis.
 
-If you have any questions about this program, drop by #remotestorage on
+There is an [open-source accounts management
-Freenode, or [post to the RS
+app](https://gitea.kosmos.org/kosmos/akkounts/) by the Kosmos project, which
+comes with a built-in remoteStorage dashboard and is compatible with Liquor
+Cabinet.
+
+If you have any questions about this program, please [post to the RS
 forums](https://community.remotestorage.io/c/server-development), and we'll
-happily answer them.
+gladly answer them.
+
+## System requirements
+
+* [Ruby](https://www.ruby-lang.org/en/) and [Bundler](https://bundler.io/)
+* [Redis](https://redis.io/)
+* S3-compatible object storage (e.g. [Garage](https://garagehq.deuxfleurs.fr/)
+  or [MinIO](https://min.io/) for self-hosting)
+
+## Setup
+
+1. Check the `config.yml.erb.example` file. Either copy it to `config.yml.erb`
+   and use the enviroment variables it contains, or create/deploy your own
+   config YAML file with custom values.
+2. Install dependencies: `bundle install`
+
+## Development
+
+Running the test suite:
+
+    bundle exec rake test
+
+Running the app:
+
+    bundle exec rainbows
+
+## Deployment
+
+_TODO document options_
 
 ## Contributing
 
@@ -23,5 +56,5 @@ We love pull requests. If you want to submit a patch:
 
 * Fork the project.
 * Make your feature addition or bug fix.
-* Write specs for it. This is important so nobody breaks it in a future version unintentionally.
+* Write specs for it. This is important so nobody breaks it in a future version.
 * Push to your fork and send a pull request.

config.yml.erb.example

@@ -0,0 +1,18 @@
+development: &defaults
+  maintenance: false
+  redis:
+    host: <%= ENV["REDIS_HOST"] || "localhost" %>
+    port: <%= ENV["REDIS_PORT"] || 6379 %>
+    db: <%= ENV["REDIS_DB"] || 1 %>
+  s3: &s3_defaults
+    endpoint: <%= ENV["S3_ENDPOINT"] || "http://127.0.0.1:9000" %>
+    region: <%= ENV["S3_REGION"] || "us-east-1" %>
+    access_key_id: <%= ENV["S3_ACCESS_KEY"] || "minioadmin" %>
+    secret_key_id: <%= ENV["S3_SECRET_KEY"] || "minioadmin" %>
+    bucket: <%= ENV["S3_BUCKET"] || "rs-development" %>
+test:
+  <<: *defaults
+staging:
+  <<: *defaults
+production:
+  <<: *defaults

config.yml.example.s3

@@ -1,26 +0,0 @@
-development: &defaults
-  maintenance: false
-  s3:
-    endpoint: "https://some-endpoint"
-    region: "region"
-    access_key_id: ""
-    secret_key_id: ""
-    bucket: "test-bucket"
-  redis:
-    host: localhost
-    port: 6379
-
-test:
-  <<: *defaults
-  s3:
-    endpoint: "https://some-endpoint"
-    region: "region"
-    access_key_id: ""
-    secret_key_id: ""
-    bucket: "test-bucket"
-
-staging:
-  <<: *defaults
-
-production:
-  <<: *defaults

lib/remote_storage/rest_provider.rb

@@ -431,9 +431,9 @@ module RemoteStorage
       end
     end
 
-    def escape(url)
+    def escape(str)
       # We want spaces to turn into %20 and slashes to stay slashes
-      CGI::escape(url).gsub('+', '%20').gsub('%2F', '/')
+      CGI::escape(str).gsub('+', '%20').gsub('%2F', '/')
     end
 
     def redis

lib/remote_storage/s3.rb

@@ -10,18 +10,29 @@ module RemoteStorage
 
     private
 
-    # S3 already wraps the ETag around quotes
+    def s3_signer
+      signer ||= Aws::Sigv4::Signer.new(
+        service: 's3',
+        region: settings.s3["region"],
+        access_key_id: settings.s3["access_key_id"].to_s,
+        secret_access_key: settings.s3["secret_key_id"].to_s,
+        uri_escape_path: false
+      )
+    end
+
+    # S3 already wraps the ETag with quotes
     def format_etag(etag)
       etag
     end
 
     def do_put_request(url, data, content_type)
       deal_with_unauthorized_requests do
-        md5 = Digest::MD5.base64digest(data)
+        headers = { "Content-Type" => content_type }
-        authorization_headers = authorization_headers_for(
+        auth_headers = auth_headers_for("PUT", url, headers, data)
-          "PUT", url, md5, content_type
+
-        ).merge({ "Content-Type" => content_type, "Content-Md5" => md5 })
+        # TODO check if put was successful, e.g. it's returning a 413 directly
-        res = RestClient.put(url, data, authorization_headers)
+        # if the back-end does, too (missing CORS headers in that case)
+        res = RestClient.put(url, data, headers.merge(auth_headers))
 
         return [
           res.headers[:etag].delete('"'),
@@ -32,24 +43,24 @@ module RemoteStorage
 
     def do_get_request(url, &block)
       deal_with_unauthorized_requests do
-        headers = { }
+        headers = {}
         headers["Range"] = server.env["HTTP_RANGE"] if server.env["HTTP_RANGE"]
-        authorization_headers = authorization_headers_for("GET", url)
+        auth_headers = auth_headers_for("GET", url, headers)
-        RestClient.get(url, authorization_headers.merge(headers), &block)
+        RestClient.get(url, headers.merge(auth_headers), &block)
       end
     end
 
     def do_head_request(url, &block)
       deal_with_unauthorized_requests do
-        authorization_headers = authorization_headers_for("HEAD", url)
+        auth_headers = auth_headers_for("HEAD", url)
-        RestClient.head(url, authorization_headers, &block)
+        RestClient.head(url, auth_headers, &block)
       end
     end
 
     def do_delete_request(url)
       deal_with_unauthorized_requests do
-        authorization_headers = authorization_headers_for("DELETE", url)
+        auth_headers = auth_headers_for("DELETE", url)
-        RestClient.delete(url, authorization_headers)
+        RestClient.delete(url, auth_headers)
       end
     end
 
@@ -67,38 +78,11 @@ module RemoteStorage
       return found
     end
 
-    # This is using the S3 authorizations, not the newer AW V4 Signatures
+    def auth_headers_for(http_method, url, headers = {}, data = nil)
-    # (https://s3.amazonaws.com/doc/s3-developer-guide/RESTAuthentication.html)
+      signature = s3_signer.sign_request(
-    def authorization_headers_for(http_verb, url, md5 = nil, content_type = nil)
+        http_method: http_method, url: url, headers: headers, body: data
-      url = File.join("/", url.gsub(base_url, ""))
+      )
-      date = Time.now.httpdate
+      signature.headers
-      signed_data = generate_s3_signature(http_verb, md5, content_type, date, url)
-      {
-        "Authorization" => "AWS #{credentials[:access_key_id]}:#{signed_data}",
-        "Date" => date
-      }
-    end
-
-    def credentials
-      @credentials ||= { access_key_id: settings.s3["access_key_id"], secret_key_id: settings.s3["secret_key_id"] }
-    end
-
-    def digest(secret, string_to_sign)
-      Base64.encode64(hmac(secret, string_to_sign)).strip
-    end
-
-    def hmac(key, value)
-      OpenSSL::HMAC.digest(OpenSSL::Digest.new('sha1'), key, value)
-    end
-
-    def uri_escape(s)
-      CGI.escape(s).gsub('%5B', '[').gsub('%5D', ']')
-    end
-
-    def generate_s3_signature(http_verb, md5, content_type, date, url)
-      string_to_sign = [http_verb, md5, content_type, date, url].join "\n"
-      signature = digest(credentials[:secret_key_id], string_to_sign)
-      uri_escape(signature)
     end
 
     def base_url
@@ -106,8 +90,7 @@ module RemoteStorage
     end
 
     def container_url_for(user)
-      "#{base_url}#{settings.s3["bucket"]}/#{user}"
+      "#{base_url}/#{settings.s3["bucket"]}/#{user}"
     end
   end
-
 end

liquor-cabinet.rb

@@ -18,7 +18,7 @@ class LiquorCabinet < Sinatra::Base
 
     register Sinatra::ConfigFile
     set :environments, %w{development test production staging}
-    config_file 'config.yml'
+    config_file 'config.yml.erb'
   end
 
   configure :development do
@@ -64,7 +64,7 @@ class LiquorCabinet < Sinatra::Base
       headers 'Access-Control-Allow-Origin' => '*',
               'Access-Control-Allow-Methods' => 'GET, PUT, DELETE',
               'Access-Control-Allow-Headers' => 'Authorization, Content-Type, Origin, If-Match, If-None-Match, Range',
-              'Access-Control-Expose-Headers' => 'ETag, Content-Length, Content-Range',
+              'Access-Control-Expose-Headers' => 'ETag, Content-Length, Content-Range, Content-Type',
               'Accept-Ranges' => 'bytes'
       headers['Access-Control-Allow-Origin'] = env["HTTP_ORIGIN"] if env["HTTP_ORIGIN"]
       headers['Cache-Control'] = 'no-cache'

spec/s3/app_spec.rb

@@ -2,7 +2,7 @@ require_relative "../spec_helper"
 
 describe "S3 provider" do
   def container_url_for(user)
-    "#{app.settings.s3["endpoint"]}#{app.settings.s3["bucket"]}/#{user}"
+    "#{app.settings.s3["endpoint"]}/#{app.settings.s3["bucket"]}/#{user}"
   end
 
   def storage_class

spec/spec_helper.rb

@@ -8,7 +8,6 @@ require_relative '../liquor-cabinet'
 require 'minitest/autorun'
 require "minitest/stub_any_instance"
 require 'rack/test'
-require 'purdytest'
 require "redis"
 require "rest_client"
 require "ostruct"
@@ -36,22 +35,22 @@ if app.settings.respond_to? :redis
   end
 end
 
-MiniTest::Spec.class_eval do
+Minitest::Spec.class_eval do
   def self.shared_examples
     @shared_examples ||= {}
   end
 end
 
-module MiniTest::Spec::SharedExamples
+module Minitest::Spec::SharedExamples
   def shared_examples_for(desc, &block)
-    MiniTest::Spec.shared_examples[desc] = block
+    Minitest::Spec.shared_examples[desc] = block
   end
 
   def it_behaves_like(desc)
-    self.instance_eval(&MiniTest::Spec.shared_examples[desc])
+    self.instance_eval(&Minitest::Spec.shared_examples[desc])
   end
 end
 
-Object.class_eval { include(MiniTest::Spec::SharedExamples) }
+Object.class_eval { include(Minitest::Spec::SharedExamples) }
 
 require_relative 'shared_examples'