diff --git a/projet/hyperdrive-rest.js b/projet/hyperdrive-rest.js
index 78ed33c8201d4037229a1396c6824c99f797f0ca..e90e775a604eba5b46309ba6c97a109d8b402383 100644
--- a/projet/hyperdrive-rest.js
+++ b/projet/hyperdrive-rest.js
@@ -253,6 +253,8 @@ app.get('/download/:file_id', (req, res) => {
  * param 
  */
 app.get('/change-path*', (req, res) => {
+
+    sql.changeDirectory('a', req.params['0']);
     res.send(`Request for a change path (${req.params['0']})`)
 })
 
diff --git a/projet/sql-request.js b/projet/sql-request.js
index 43ad804421d8bbdc8983d3b3f6d9f074f3ce4ccf..635716ef39df77ed4eafa67d9aa7f9437278b7a7 100644
--- a/projet/sql-request.js
+++ b/projet/sql-request.js
@@ -14,21 +14,20 @@ var con = mysql.createConnection({
  * @param {string} login This is the login of the user
  * @param {string} pass This is the password of the user
  */
-function userExist(login, pass){
+function userExist(login, pass, callback){
     const q = `SELECT login, passwd FROM Users WHERE login='${login}' AND passwd='${pass}';`;
-    return new Promise (() => {
-            con.query(q, function (err, result) {
-            if (err) return false;
-            if (result.length > 0) {
-                console.log("user exists");
-                return {
-                    login: result[0]['login'],
-                    passwd: result[0]['passwd']
-                };
-            } else {
-                console.log("user don't exists");
-            }
-        });
+    con.query(q, function (err, result) {
+        if (err) return false;
+        if (result.length > 0) {
+            console.log("user already exists");
+            return callback({
+                login: result[0]['login'],
+                passwd: result[0]['passwd']
+            });
+        } else {
+            console.log("user don't exists");
+            return callback(false);
+        }
     });
 }
 
@@ -37,16 +36,17 @@ function userExist(login, pass){
  * @param {string} login This is the login of the user
  * @param {string} pass This is the password of the user
  */
-async function insertUser(login, passwd) {
+function insertUser(login, passwd, callback){
     let q = `INSERT INTO Users VALUES ('${login}', '${passwd}');`;
-    return new Promise( () => {
-        userExist(login, passwd).then(
+    userExist(login, passwd, (userExist) => {
+        if (!userExist){
             con.query(q, (err, res) => {
-                if (err) return false;
-                console.log("User", login, "inserted in the db")
-                return true;
-            })
-        )
+                if (err) return callback(false);
+                if (!res) {console.log(res);return callback(false);}
+                console.log("User", login, "inserted in the db");
+                return callback(true);
+            });
+        }
     });
 }
 
@@ -56,18 +56,16 @@ async function insertUser(login, passwd) {
  * @param {string} login User's path
  * @param {string} parent Parent of the new folder
  */
-function addPath(path, login, parent){
+function addPath(path, login, parent, callback){
     let q = `INSERT INTO Paths VALUES ('${path}', '${login}', ${parent});`;
-    return new Promise(() => {
-        con.query(q, function(err, res) {
-            if (err) {
-                console.log("Error while adding a new path");
-                console.log(err);
-                return false;
-            }
-            console.log("New path", path, "added succesfully !");
-            return true;
-        });
+    con.query(q, function(err, res) {
+        if (err) {
+            console.log("Error while adding a new path");
+            console.log(err);
+            return callback(false);
+        }
+        console.log("New path", path, "added succesfully !");
+        return callback(true);
     });
 }
 
@@ -77,13 +75,18 @@ function addPath(path, login, parent){
  * @param {string} login This is the login of the user
  * @param {string} pass This is the password of the user
  */
-async function addUser(login, passwd){
-    return new Promise(async () => {
-        await insertUser(login, passwd).then(
-        addPath('/'+login, login, null));
+function addUser(login, passwd) {
+
+    insertUser(login, passwd, (insertOk) => {
+        console.log(insertOk);
+        if (insertOk) {
+            addPath('/'+login, login, null, (res)=>{});
+            console.log("Add ok");
+        }
     });
 }
 
+
 /**
 +----------------+-------+-----------+---------+-----------+
 | paths          | login | parent    | file_id | file_name |
@@ -93,20 +96,33 @@ async function addUser(login, passwd){
 | /a/coucou/test | a     | /a/coucou | NULL    | NULL      |
 +----------------+-------+-----------+---------+-----------+
  */
-async function changePath(login, path){
+async function changeDirectory(login, path, callback){
     q = `
         SELECT Paths.paths, login, parent, Files.file_id, Files.file_name
         FROM Paths
         LEFT JOIN Files ON Files.paths = Paths.paths
-        WHERE Files.file_id IS NOT NULL
-        AND login='${login}' AND Paths.paths='${path}'`;
+        WHERE Paths.login='${login}'
+        AND Paths.paths='${path}'
+        OR Paths.parent='${path}';`;
 
     con.query(q, (err, res) => {
         if (err) { 
             console.log("Error while loading the path");
-            return false;
+            return callback(false, err);
+        }
+
+        let content = [];
+        for (let i in res){
+            content.push({
+                paths: res[i].paths,
+                login: res[i].login,
+                parent: res[i].parent,
+                file_id: res[i].file_id,
+                file_name: res[i].file_name
+            });
         }
-        console.log(res);
+
+        console.log(content);
     });
 
     return [
@@ -134,6 +150,6 @@ async function changePath(login, path){
     ];
 }
 
-exports.userExist = userExist;
 exports.addUser = addUser;
-exports.addPath = addPath;
\ No newline at end of file
+exports.addPath = addPath;
+exports.changeDirectory = changeDirectory;
\ No newline at end of file