Class: FakeS3::Servlet

Inherits:
WEBrick::HTTPServlet::AbstractServlet
  • Object
show all
Defined in:
lib/fakes3/server.rb

Instance Method Summary collapse

Constructor Details

#initialize(server, store, hostname, cors_options) ⇒ Servlet

Returns a new instance of Servlet.



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# File 'lib/fakes3/server.rb', line 52

def initialize(server,store,hostname,cors_options)
  super(server)
  @store = store
  @hostname = hostname
  @port = server.config[:Port]
  @root_hostnames = [hostname,'localhost','s3.amazonaws.com','s3.localhost']

  # Here lies hard-coded defaults for CORS Configuration
  @cors_allow_origin = (cors_options['allow_origin'] or '*')
  @cors_allow_methods = (cors_options['allow_methods'] or 'PUT, POST, HEAD, GET, OPTIONS')
  @cors_preflight_allow_headers = (cors_options['preflight_allow_headers'] or 'Accept, Content-Type, Authorization, Content-Length, ETag, X-CSRF-Token, Content-Disposition')
  @cors_post_put_allow_headers = (cors_options['post_put_allow_headers'] or 'Authorization, Content-Length')
  @cors_expose_headers = (cors_options['expose_headers'] or 'ETag')
end

Instance Method Details

#do_DELETE(request, response) ⇒ Object 



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# File 'lib/fakes3/server.rb', line 337

def do_DELETE(request, response)
  s_req = normalize_request(request)

  case s_req.type
  when Request::DELETE_OBJECTS
    bucket_obj = @store.get_bucket(s_req.bucket)
    keys = XmlParser.delete_objects(s_req.webrick_request)
    @store.delete_objects(bucket_obj,keys,s_req.webrick_request)
  when Request::DELETE_OBJECT
    bucket_obj = @store.get_bucket(s_req.bucket)
    @store.delete_object(bucket_obj,s_req.object,s_req.webrick_request)
  when Request::DELETE_BUCKET
    @store.delete_bucket(s_req.bucket)
  end

  response.status = 204
  response.body = ""
end

#do_GET(request, response) ⇒ Object 



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# File 'lib/fakes3/server.rb', line 74

def do_GET(request, response)
  s_req = normalize_request(request)

  case s_req.type
  when 'LIST_BUCKETS'
    response.status = 200
    response['Content-Type'] = 'application/xml'
    buckets = @store.buckets
    response.body = XmlAdapter.buckets(buckets)
  when 'LS_BUCKET'
    bucket_obj = @store.get_bucket(s_req.bucket)
    if bucket_obj
      response.status = 200
      response['Content-Type'] = "application/xml"
      query = {
        :marker => s_req.query["marker"] ? s_req.query["marker"].to_s : nil,
        :prefix => s_req.query["prefix"] ? s_req.query["prefix"].to_s : nil,
        :max_keys => s_req.query["max-keys"] ? s_req.query["max-keys"].to_i : nil,
        :delimiter => s_req.query["delimiter"] ? s_req.query["delimiter"].to_s : nil
      }
      bq = bucket_obj.query_for_range(query)
      response.body = XmlAdapter.bucket_query(bq)
    else
      response.status = 404
      response.body = XmlAdapter.error_no_such_bucket(s_req.bucket)
      response['Content-Type'] = "application/xml"
    end
  when 'GET_ACL'
    response.status = 200
    response.body = XmlAdapter.acl
    response['Content-Type'] = 'application/xml'
  when 'GET'
    real_obj = @store.get_object(s_req.bucket, s_req.object, request)
    if !real_obj
      response.status = 404
      response.body = XmlAdapter.error_no_such_key(s_req.object)
      response['Content-Type'] = "application/xml"
      response['Access-Control-Allow-Origin'] = @cors_allow_origin
      return
    end

    if_none_match = request["If-None-Match"]
    if if_none_match == "\"#{real_obj.md5}\"" or if_none_match == "*"
      response.status = 304
      return
    end

    if_modified_since = request["If-Modified-Since"]
    if if_modified_since
      time = Time.httpdate(if_modified_since)
      if time >= Time.iso8601(real_obj.modified_date)
        response.status = 304
        return
      end
    end

    response.status = 200
    response['Content-Type'] = real_obj.content_type

    if real_obj.content_encoding
      response.header['X-Content-Encoding'] = real_obj.content_encoding
      response.header['Content-Encoding'] = real_obj.content_encoding
    end

    response['Content-Disposition'] = real_obj.content_disposition ? real_obj.content_disposition : 'attachment'

    response['Last-Modified'] = Time.iso8601(real_obj.modified_date).httpdate
    response.header['ETag'] = "\"#{real_obj.md5}\""
    response['Accept-Ranges'] = "bytes"
    response['Last-Ranges'] = "bytes"
    response['Access-Control-Allow-Origin'] = @cors_allow_origin

    real_obj.custom_metadata.each do |header, value|
      response.header['x-amz-meta-' + header] = value
    end

    stat = File::Stat.new(real_obj.io.path)
    content_length = stat.size

    # Added Range Query support
    range = request.header["range"].first
    if range
      response.status = 206
      if range =~ /bytes=(\d*)-(\d*)/
        start = $1.to_i
        finish = $2.to_i
        finish_str = ""
        if finish == 0
          finish = content_length - 1
          finish_str = "#{finish}"
        else
          finish_str = finish.to_s
        end

        bytes_to_read = finish - start + 1
        response['Content-Range'] = "bytes #{start}-#{finish_str}/#{content_length}"
        real_obj.io.pos = start
        response.body = real_obj.io.read(bytes_to_read)
        return
      end
    end
    response['Content-Length'] = File::Stat.new(real_obj.io.path).size
    if s_req.http_verb == 'HEAD'
      response.body = ""
     real_obj.io.close
    else
      response.body = real_obj.io
    end

    if real_obj.cache_control
      response['Cache-Control'] = real_obj.cache_control
    end
  end
end

#do_multipartPUT(request, response) ⇒ Object 



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# File 'lib/fakes3/server.rb', line 218

def do_multipartPUT(request, response)
  s_req = normalize_request(request)
  query = CGI::parse(request.request_uri.query)

  part_number   = query['partNumber'].first
  upload_id     = query['uploadId'].first
  part_name     = "#{upload_id}_#{s_req.object}_part#{part_number}"

  # store the part
  if s_req.type == Request::COPY
    real_obj = @store.copy_object(
      s_req.src_bucket, s_req.src_object,
      s_req.bucket    , part_name,
      request
    )

    response['Content-Type'] = "text/xml"
    response.body = XmlAdapter.copy_object_result real_obj
  else
    bucket_obj  = @store.get_bucket(s_req.bucket)
    if !bucket_obj
      bucket_obj = @store.create_bucket(s_req.bucket)
    end
    real_obj    = @store.store_object(
      bucket_obj, part_name,
      request
    )

    response.body   = ""
    response.header['ETag']  = "\"#{real_obj.md5}\""
  end

  response['Access-Control-Allow-Origin']   = @cors_allow_origin
  response['Access-Control-Allow-Headers']  = @cors_post_put_allow_headers
  response['Access-Control-Expose-Headers'] = @cors_expose_headers

  response.status = 200
end

#do_OPTIONS(request, response) ⇒ Object 



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# File 'lib/fakes3/server.rb', line 356

def do_OPTIONS(request, response)
  super
  response['Access-Control-Allow-Origin']   = @cors_allow_origin
  response['Access-Control-Allow-Methods']  = @cors_allow_methods
  response['Access-Control-Allow-Headers']  = @cors_preflight_allow_headers
  response['Access-Control-Expose-Headers'] = @cors_expose_headers
end

#do_POST(request, response) ⇒ Object 



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# File 'lib/fakes3/server.rb', line 257

def do_POST(request,response)
  if request.query_string === 'delete'
    return do_DELETE(request, response)
  end

  s_req = normalize_request(request)
  key   = request.query['key']
  query = CGI::parse(request.request_uri.query || "")

  if query.has_key?('uploads')
    upload_id = SecureRandom.hex

    response.body = <<-eos.strip
      <?xml version="1.0" encoding="UTF-8"?>
      <InitiateMultipartUploadResult>
        <Bucket>#{ s_req.bucket }</Bucket>
        <Key>#{ key }</Key>
        <UploadId>#{ upload_id }</UploadId>
      </InitiateMultipartUploadResult>
    eos
  elsif query.has_key?('uploadId')
    upload_id  = query['uploadId'].first
    bucket_obj = @store.get_bucket(s_req.bucket)
    real_obj   = @store.combine_object_parts(
      bucket_obj,
      upload_id,
      s_req.object,
      parse_complete_multipart_upload(request),
      request
    )

    response.body = XmlAdapter.complete_multipart_result real_obj
  elsif request.content_type =~ /^multipart\/form-data; boundary=(.+)/
    key = request.query['key']

    success_action_redirect = request.query['success_action_redirect']
    success_action_status   = request.query['success_action_status']

    filename = 'default'
    filename = $1 if request.body =~ /filename="(.*)"/
    key      = key.gsub('${filename}', filename)

    bucket_obj = @store.get_bucket(s_req.bucket) || @store.create_bucket(s_req.bucket)
    real_obj   = @store.store_object(bucket_obj, key, s_req.webrick_request)

    response['Etag'] = "\"#{real_obj.md5}\""

    if success_action_redirect
      object_params = [ [ :bucket, s_req.bucket ], [ :key, key ] ]
      location_uri = URI.parse(success_action_redirect)
      original_location_params = URI.decode_www_form(String(location_uri.query))
      location_uri.query = URI.encode_www_form(original_location_params + object_params)

      response.status      = 303
      response.body        = ""
      response['Location'] = location_uri.to_s
    else
      response.status = success_action_status || 204
      if response.status == "201"
        response.body = <<-eos.strip
          <?xml version="1.0" encoding="UTF-8"?>
          <PostResponse>
            <Location>http://#{s_req.bucket}.localhost:#{@port}/#{key}</Location>
            <Bucket>#{s_req.bucket}</Bucket>
            <Key>#{key}</Key>
            <ETag>#{response['Etag']}</ETag>
          </PostResponse>
        eos
      end
    end
  else
    raise WEBrick::HTTPStatus::BadRequest
  end

  response['Content-Type']                  = 'text/xml'
  response['Access-Control-Allow-Origin']   = @cors_allow_origin
  response['Access-Control-Allow-Headers']  = @cors_post_put_allow_headers
  response['Access-Control-Expose-Headers'] = @cors_expose_headers
end

#do_PUT(request, response) ⇒ Object 



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# File 'lib/fakes3/server.rb', line 189

def do_PUT(request, response)
  s_req = normalize_request(request)
  query = CGI::parse(request.request_uri.query || "")

  return do_multipartPUT(request, response) if query['uploadId'].first

  response.status = 200
  response.body = ""
  response['Content-Type'] = "text/xml"
  response['Access-Control-Allow-Origin'] = @cors_allow_origin

  case s_req.type
  when Request::COPY
    object = @store.copy_object(s_req.src_bucket, s_req.src_object, s_req.bucket, s_req.object, request)
    response.body = XmlAdapter.copy_object_result(object)
  when Request::STORE
    bucket_obj = @store.get_bucket(s_req.bucket)
    if !bucket_obj
      # Lazily create a bucket.  TODO fix this to return the proper error
      bucket_obj = @store.create_bucket(s_req.bucket)
    end

    real_obj = @store.store_object(bucket_obj, s_req.object, s_req.webrick_request)
    response.header['ETag'] = "\"#{real_obj.md5}\""
  when Request::CREATE_BUCKET
    @store.create_bucket(s_req.bucket)
  end
end

#validate_request(request) ⇒ Object 



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# File 'lib/fakes3/server.rb', line 67

def validate_request(request)
  req = request.webrick_request
  return if req.nil?
  return if not req.header.has_key?('expect')
  req.continue if req.header['expect'].first=='100-continue'
end