implement WebDAV mount support

Gemfile

@@ -21,6 +21,7 @@ gem 'cocaine'
 gem 'zipruby'
 gem 'always_verify_ssl_certificates'
 gem 'sass', require: nil
+gem 'dav4rack'
 
 platform :mri do
   gem 'magic' # sudo apt-get install file, For OSX: brew install libmagic

Gemfile.lock

@@ -43,16 +43,20 @@ GEM
     cocaine (0.5.4)
       climate_control (>= 0.0.3, < 1.0)
     coderay (1.1.0)
-    columnize (0.3.6)
+    columnize (0.8.9)
     connection_pool (2.0.0)
     crack (0.4.2)
       safe_yaml (~> 1.0.0)
+    dav4rack (0.3.0)
+      nokogiri (>= 1.4.2)
+      rack (>= 1.1.0)
+      uuidtools (~> 2.1.1)
     debugger (1.6.6)
       columnize (>= 0.3.1)
       debugger-linecache (~> 1.2.0)
       debugger-ruby_core_source (~> 1.3.2)
     debugger-linecache (1.2.0)
-    debugger-ruby_core_source (1.3.2)
+    debugger-ruby_core_source (1.3.5)
     docile (1.1.3)
     erubis (2.7.0)
     extlib (0.9.16)
@@ -211,6 +215,7 @@ DEPENDENCIES
   bcrypt
   capybara_minitest_spec
   cocaine
+  dav4rack
   erubis
   fabrication
   faker

app.rb

@@ -692,7 +692,6 @@ post '/site_files/upload' do
   params[:files].each do |file|
     results << current_site.store_file(file[:filename], file[:tempfile])
   end
-
   current_site.increment_changed_count if results.include?(true)
 
   file_upload_response

config.ru

@@ -1,8 +1,64 @@
+require 'rubygems'
 require './app.rb'
 require 'sidekiq/web'
 
 map('/') { run Sinatra::Application }
 
+map '/webdav' do
+
+  use Rack::Auth::Basic do |username, password|
+    Site.valid_login? username, password
+  end
+
+  run lambda {|env|
+    site = Site[username: env['REMOTE_USER']]
+
+    if env['REQUEST_METHOD'] == 'PUT'
+      path = env['PATH_INFO']
+      tmpfile = Tempfile.new 'davfile', encoding: 'binary'
+      tmpfile.write env['rack.input'].read
+      tmpfile.close
+
+      if site.file_size_too_large? tmpfile.size
+        return [507, {}, ['']]
+      end
+
+      if Site.valid_file_type?(filename: path, tempfile: tmpfile)
+        site.store_file path, tmpfile
+        return [201, {}, ['']]
+      else
+        return [415, {}, ['']]
+      end
+    end
+
+    if env['REQUEST_METHOD'] == 'MOVE'
+      tmpfile = Tempfile.new 'moved_file'
+      tmpfile.close
+
+      destination = env['HTTP_DESTINATION'].match(/^.+\/webdav(.+)$/i).captures.first
+
+      FileUtils.cp site.files_path(env['PATH_INFO']), tmpfile.path
+
+      DB.transaction do
+        site.store_file destination, tmpfile
+        site.delete_file env['PATH_INFO']
+      end
+
+      return [201, {}, ['']]
+    end
+
+    if env['REQUEST_METHOD'] == 'DELETE'
+      site.delete_file env['PATH_INFO']
+      return [201, {}, ['']]
+    end
+
+    res = DAV4Rack::Handler.new(
+      root: Site.select(:username).where(username: env['REMOTE_USER']).first.files_path,
+      root_uri_path: '/webdav'
+    ).call(env)
+  }
+end
+
 map '/sidekiq' do
   use Rack::Auth::Basic, "Protected Area" do |username, password|
     raise 'missing sidekiq auth' unless $config['sidekiq_user'] && $config['sidekiq_pass']

models/site.rb

@@ -439,6 +439,8 @@ class Site < Sequel::Model
     screenshots_delete(path) if ext.match HTML_REGEX
     thumbnails_delete(path) if ext.match IMAGE_REGEX
 
+    path = path[1..path.length] if path[0] == '/'
+
     SiteChangeFile.filter(site_id: self.id, filename: path).delete
 
     true