* use json to send file to flask

* hash file to have a filename
* store the data to custom dir "uploads"
* init everyting in init fn
*

.gitignore

@@ -9,3 +9,5 @@ __pycache__/
 
 src/public/fonts/
 src/public/js/libs/
+
+uploads/

src/app.py

@@ -1,18 +1,16 @@
 from flask import Flask, redirect
 
-from routes.index import router as index
-from routes.api.upload import router as api_upload
+from config import init
 from routes.api.download import router as api_download
-from utils.font import init as init_font
-from utils.libjs import init as init_libjs
+from routes.api.upload import router as api_upload
+from routes.index import router as index
 
 app = Flask(__name__, static_url_path="/", static_folder="public")
 app.register_blueprint(index, url_prefix="/index")
 app.register_blueprint(api_upload, url_prefix="/api/upload")
 app.register_blueprint(api_download, url_prefix="/api/download")
 
-init_font("1.3.0")
-init_libjs("fc5e3c53e41490e24ca7f67cb24e7ab389b770f9")
+init()
 
 
 @app.route("/")

src/config.py

@@ -1,2 +1,20 @@
+from os import mkdir
+
+from utils.font import init as init_font
+from utils.libjs import init as init_libjs
+from utils.misc import exist
+
+
 class Config:
     name = "Sand"
+    uploads_dir = "uploads"
+
+
+def init():
+    # Download dependencies
+    init_font("1.3.0")
+    init_libjs("fc5e3c53e41490e24ca7f67cb24e7ab389b770f9")
+
+    # Create upload folder if doesn't exists
+    if not exist(Config.uploads_dir):
+        mkdir(Config.uploads_dir)

src/public/js/main.js

@@ -63,15 +63,14 @@ const send = (file, element) => {
     // Encrypt the file
     file.text().then((content) => {
         gen_RSA_keypair(1024).then(([pub_key, sec_key]) => {
-            let encoded_file = RSA_enc(content, sec_key);
-
-            // Send it
-            const data = new FormData();
-            data.append("file", encoded_file);
+            let data = {
+                file: RSA_enc(content, sec_key).map((v) => v.toString()),
+            };
 
             const req = new XMLHttpRequest();
             req.open("POST", "api/upload");
-            req.send(data);
+            req.setRequestHeader("Content-Type", "application/json");
+            req.send(JSON.stringify(data));
 
             /* Here we need to store the public key and then wait for a response
              * from the server. When the server send us a hash of the file

src/routes/api/upload.py

@@ -1,4 +1,6 @@
+from config import Config
 from flask import Blueprint, redirect, request
+from utils.misc import h
 
 router = Blueprint("upload", __name__)
 
@@ -6,6 +8,11 @@ router = Blueprint("upload", __name__)
 @router.route("", methods=["POST"])
 def upload():
     if request.method == "POST":
-        print(request.get_data())
+        json = request.get_json()
+        if json:
+            data = "".join(json["file"])
+            data_hash = h(data)
+            with open(f"{Config.uploads_dir}/{data_hash}", "w") as f:
+                f.write(data)
 
     return redirect("index")

src/utils/misc.py

@@ -1,4 +1,9 @@
-def exist(path):
+from hashlib import sha256
+
+BYTEORDER = "big"
+
+
+def exist(path: str) -> bool:
     """Check if file or directory exists"""
     try:
         open(path, "r")
@@ -8,3 +13,13 @@ def exist(path):
         return True  # Directory exists
     else:
         return True  # File exists
+
+
+def int_to_bytes(data: int) -> bytes:
+    """Transforme un int en bytes"""
+    return data.to_bytes((data.bit_length() + 7) // 8, BYTEORDER)
+
+
+def h(data: str) -> str:
+    """Hash un texte"""
+    return str(int.from_bytes(sha256(int_to_bytes(int(data))).digest(), BYTEORDER))