diff --git a/client.py b/client.py
index c19cfd7..427c646 100644
--- a/client.py
+++ b/client.py
@@ -1,7 +1,9 @@
 import pyperclip
 import socketio
 import os
+import sys
 import subprocess
+import zc.lockfile
 # standard Python
 
 # to put in a conf file
@@ -23,6 +25,14 @@ ip = f"http://{ip}:{port}/"
 print(ip)
 sio = socketio.Client()
 sio.connect(ip)
+
+try:
+    print("[Debug] Trying to lockfile")
+    zc.lockfile.LockFile('/tmp/notifysync.lock')
+except:
+    print("[Debug] Failed to lock file, another instance running, exiting")
+    sys.exit()
+        
 print("[Debug] Connected to Server .w.")
 
 def sendSystemNotification(title:str,content:str):
diff --git a/serveur.py b/serveur.py
index 322c6e7..279fec2 100644
--- a/serveur.py
+++ b/serveur.py
@@ -1,38 +1,185 @@
 #!/bin/python
-from flask import Flask, request, render_template, json, jsonify
 import flask_socketio
+import sqlite3
+import secrets
+import time
+from flask import Flask, request, render_template, json, jsonify
 # base socket
 
 app = Flask(__name__)
 socketio = flask_socketio.SocketIO(app)
 
+###############################################################################
 
-@app.route("/notify", methods=['POST'])
-def notify():
-    """
-    Le but de cet app se resume a cette fonction, elle recoit une requette http et renvoie via le websocket
-    le contenu de la requette a tout les client.
-    """
-    data = {}
-    data["ip"] = request.remote_addr
-    print(request.remote_addr)
-    data['title'] = request.form['title']
-    data['content'] = request.form['content']
-    print(f"""[Debug] Sending to all clients notification event""")
-    socketio.emit("notify", data, broadcast=True)
-    return "true" , 200
 
-@app.route("/clip", methods=['POST'])
-def clip():
+def first_run():
     """
-    pareil qu'en haut mais pour le clipboard .w.
+    create databases
     """
-    data = {}
-    data["ip"] = request.remote_addr
-    data['content'] = request.form['content']
-    print(f"""[Debug] Sending to all clients clipboard event""")
-    socketio.emit("clip", data, broadcast=True)
-    return "true" , 200
+    con = sqlite3.connect("database.db")
+    cur = con.cursor()
+    cur.execute("CREATE TABLE USERS(\
+                username,\
+                password,\
+                token)")
+
+    cur.execute("CREATE TABLE NOTIFICATION(\
+                id,\
+                date,\
+                machine,\
+                token,\
+                title,\
+                content)")
+
+    cur.execute("CREATE TABLE CLIPBOARD(\
+                id,\
+                date,\
+                machine,\
+                token,\
+                content)")
+
+    con.commit()
+    con.close()
+
+###############################################################################
+
+@app.route("/user", methods=['POST'])
+def auth():
+    """
+    Authentifie un user, simple, basique
+    "username"
+    "password"
+    """
+    user = (request.values.get("username"), request.values.get("password"))
+    con = sqlite3.connect("database.db")
+    cur = con.cursor()
+    db_user = cur.execute("SELECT token FROM USERS WHERE USERNAME=? AND \
+                          PASSWORD=?", user).fetchone()
+    con.close()
+    if db_user is None:
+        return {"status": "This user does not exist or the password is \
+                incorrect"}, 404
+    else:
+        return {"status": "ok", "token": db_user[0]}
+
+
+@app.route("/user", methods=['PUT'])
+def register():
+    """
+    Authentifie un user, simple, basique
+    "username"
+    "password"
+    """
+    con = sqlite3.connect("database.db")
+    cur = con.cursor()
+    username = request.values.get("username")
+    user = (username,)
+    if cur.execute("SELECT username FROM USERS WHERE username=?", user)\
+            .fetchone() is not None:
+        con.close()
+        return {"status": "Error, username already taken"}, 500
+    user = (request.values.get("username"), request.values.get("password"),
+            secrets.token_urlsafe(64))
+    try:
+        cur.execute("INSERT INTO USERS VALUES (?,?,?)", user)
+        con.commit()
+        con.close()
+        return {"status": "ok"}
+    except:
+        con.close()
+        return {"status": "Error, most likely username already taken"}, 500
+
+###############################################################################
+
+
+@app.route("/notification", methods=['PUT'])
+def add_notification():
+    """
+    Le but de cet app se resume a cette fonction, elle recoit une requete
+    http et renvoie via le websocket le contenu de la requette a tout les 
+    client.
+    """
+    token = request.values.get("token")
+    title = request.values.get('title')
+    content = request.values.get('content')
+    device_name = request.values.get('deviceName')
+    date = time.time()
+    con = sqlite3.connect("database.db")
+    cur = con.cursor()
+    if cur.execute("SELECT username FROM USERS WHERE token=?", (token,))\
+            .fetchone() is None:
+        return {"status": "Error, no user"}, 500
+    try:
+        notification = (date, device_name, token, title, content)
+        cur.execute("INSERT INTO notification VALUES (0,?,?,?,?,?)",
+                    notification)
+        con.commit()
+        con.close()
+        socketio.emit("update", broadcast=True)
+        return {"status": "ok"}, 200
+    except:
+        return {"status": "error"}, 500
+
+
+@app.route("/notification", methods=['GET'])
+def get_notifications():
+    """
+    Le but de cet app se resume a cette fonction, elle recoit une requete
+    http et renvoie via le websocket le contenu de la requette a tout les 
+    client.
+    """
+    token = request.values.get("token")
+    con = sqlite3.connect("database.db")
+    cur = con.cursor()
+    notifications = cur.execute("SELECT title,content FROM NOTIFICATION WHERE \
+                                token=?", (token, )).fetchall()
+    return {"status": "ok", "notifications": notifications}, 200
+
+###############################################################################
+
+
+@app.route("/clipboard", methods=['PUT'])
+def add_clipboard():
+    """
+    Le but de cet app se resume a cette fonction, elle recoit une requete http
+    et renvoie via le websocket le contenu de la requette a tout les clients.
+    """
+    token = request.values.get("token")
+    content = request.values.get('content')
+    device_name = request.values.get('deviceName')
+    date = time.time()
+    con = sqlite3.connect("database.db")
+    cur = con.cursor()
+    if cur.execute("SELECT username FROM USERS WHERE token=?", (token,))\
+            .fetchone() is None:
+        return {"status": "Error, no user"}, 500
+    try:
+        clipboard = (date, device_name, token, content)
+        cur.execute("INSERT INTO CLIPBOARD VALUES (0,?,?,?,?)", clipboard)
+        con.commit()
+        con.close()
+        socketio.emit("update", broadcast=True)
+        return {"status": "ok"}, 200
+    except:
+        return {"status": "error"}, 500
+
+
+@app.route("/clipboard", methods=['GET'])
+def get_clipboard():
+    """
+    Le but de cet app se resume a cette fonction, elle recoit une requete
+    http et renvoie via le websocket le contenu de la requette a tout les 
+    client.
+    """
+    token = request.values.get("token")
+    con = sqlite3.connect("database.db")
+    cur = con.cursor()
+    clipboard = cur.execute("SELECT content FROM CLIPBOARD WHERE \
+                                token=?", (token, )).fetchall()
+    return {"status": "ok", "notifications": clipboard}, 200
+
 
 if __name__ == '__main__':
-    socketio.run(app, host="0.0.0.0", port = 9564)
+    if True:
+        first_run()
+    socketio.run(app, host="0.0.0.0", port=9564)