diff --git a/README.md b/README.md
index 21423e0..8b39e6b 100644
--- a/README.md
+++ b/README.md
@@ -48,3 +48,8 @@ The file server to proxy connection can be dropped, we have to ensure the commun
 * dodb is used to keep track of the files, using its tag system
 * messages are: JSON encoded, 1KB buffered data
 * message example: { message-id: "UUID", chunk: "UUID", data: [1KB BINARY DATA] }
+
+
+# TODO
+
+* Quotas
diff --git a/shard.yml b/shard.yml
new file mode 100644
index 0000000..2e9474f
--- /dev/null
+++ b/shard.yml
@@ -0,0 +1,26 @@
+name: filestorage
+version: 0.1.0
+
+authors:
+  - Karchnu <karchnu@karchnu.fr>
+
+description: |
+  A file storage service.
+
+dependencies:
+  ipc:
+    git: https://git.karchnu.fr/WeirdOS/ipc.cr
+  dodb:
+    git: https://git.karchnu.fr/WeirdOS/dodb.cr
+  authd:
+    git: https://github.com/Lukc/authd
+
+targets:
+    json-tests:
+        main: src/json_tests.cr
+    filestorage:
+        main: src/main.cr
+    filestorageclient:
+        main: src/client.cr
+
+license: MIT
diff --git a/src/client.cr b/src/client.cr
index 631a8f1..b9e3321 100644
--- a/src/client.cr
+++ b/src/client.cr
@@ -1,12 +1,71 @@
+require "option_parser"
 require "ipc"
 require "json"
 
 require "./common.cr"
 
-client = IPC::Client.new("pong")
+service_name = "filestorage"
+
+files_and_directories_to_transfer = Array(String).new
+
+
+OptionParser.parse do |parser|
+	parser.on "-s service-name", "--service-name service-name", "Service name." do |name|
+		service_name = name
+	end
+
+	parser.unknown_args do |arg|
+		files_and_directories_to_transfer = arg
+	end
+
+	parser.on "-h", "--help", "Show this help" do
+		puts parser
+		exit 0
+	end
+end
+
+client = IPC::Client.new service_name
+
+
+#
+# Get informations about files to transfer
+#
+
+files_info = Array(FileInfo).new
+
+puts "files and directories to transfer"
+files_and_directories_to_transfer.each do |f|
+	puts "- #{f}"
+
+	if File.directory? f
+		# TODO
+		puts "Directories not supported, for now"
+	elsif File.file?(f) && File.readable? f
+		File.open(f) do |file|
+			files_info << FileInfo.new file
+		end
+	else
+		if File.exists? f
+			puts "#{f} does not exist"
+		elsif File.file? f
+			puts "#{f} is neither a directory or a file"
+		elsif File.readable? f
+			puts "#{f} is not readable"
+		end
+	end
+end
+
+pp! files_info
+
+exit 0
+
+#
+# Create the authentication message, including files info
+#
 
 token = Token.new 1002, "karchnu"
-authentication_message = AuthenticationMessage.new token
+authentication_message = AuthenticationMessage.new token, files_info
+
 
 client.send(1.to_u8, authentication_message.to_json)
 
@@ -22,6 +81,24 @@ else
 	puts "Message IDs from authentication message and its response differ"
 end
 
+#
+# file transfer
+#
+
+puts "transfer"
+files_and_directories_to_transfer.each do |f|
+	puts "- #{f}"
+
+	if File.directory? f
+		# TODO
+	elsif File.file?(f) && File.readable? f
+		File.open(f) do |file|
+			# TODO
+			# file
+		end
+	end
+end
+
 client.close
 
 #client.loop do |event|
diff --git a/src/common.cr b/src/common.cr
index 71f0ebb..92a76b7 100644
--- a/src/common.cr
+++ b/src/common.cr
@@ -1,4 +1,3 @@
-
 require "uuid"
 
 class Token
@@ -11,13 +10,31 @@ class Token
 	end
 end
 
+class FileInfo
+	JSON.mapping({
+		name: String,
+		size: UInt32,
+		tags: Array(String)?
+	})
+
+	def initialize(@name, @size, @tags = nil)
+	end
+
+	def initialize(file : File, @tags = nil)
+		@name = file.basename
+		@size = file.size
+	end
+end
+
 class AuthenticationMessage
 	JSON.mapping({
 		mid: String,
-		token: Token
+		token: Token,
+		files: Array(FileInfo),
+		tags: Array(String)?
 	})
 
-	def initialize(@token)
+	def initialize(@token, @files, @tags = nil)
 		@mid = UUID.random.to_s
 	end
 end
@@ -32,3 +49,15 @@ class Response
 	def initialize(@mid, @response, @reason = nil)
 	end
 end
+
+class Transfer
+	JSON.mapping({
+		mid: String,
+		chunk: String,
+		data: Slice(UInt8)
+	})
+
+	def initialize(@chunk, @data)
+		@mid = UUID.random.to_s
+	end
+end
diff --git a/src/main.cr b/src/main.cr
index 9d10362..12c4f99 100644
--- a/src/main.cr
+++ b/src/main.cr
@@ -4,6 +4,8 @@ require "json"
 
 require "./colors"
 
+# require "dodb"
+
 require "./common.cr"
 
 storage_directory = "./storage"
@@ -77,6 +79,10 @@ service.loop do |event|
 
 			authentication_message = AuthenticationMessage.from_json(String.new event.message.payload)
 
+			authentication_message.files.each do |file|
+				puts "uploading #{file.name} - #{file.size} bytes"
+			end
+
 			new_user = User.new authentication_message.token
 			connected_users[event.connection.fd] = new_user
 			puts "New user is: #{new_user.token.login}"