Implemented everything upload

src/utils/md5stuffs.py

@@ -0,0 +1,34 @@
+import hashlib
+
+
+def write_file_from_stream_to_file_like_while_calculating_md5(stream, f, maxsize: int = 536870912,
+                                                              chunksize: int = 4096) -> str:
+    m = hashlib.md5()  # nosec: md5 is used only for integrity checking here
+
+    total_recieved = 0
+
+    # Begin receiving the file
+
+    while True:  # This is where uploading happens
+        chunk = stream.read(chunksize)
+        if len(chunk) == 0:
+            break
+
+        total_recieved += len(chunk)
+        if total_recieved > maxsize:
+            raise OverflowError("File too big")
+
+        m.update(chunk)
+        f.write(chunk)
+
+    return m.hexdigest()
+
+
+def calculate_md5_sum_for_file(fname) -> str:
+    m = hashlib.md5()  # nosec: md5 is used only for integrity checking here
+
+    with open(fname, "rb") as f:
+        for chunk in iter(lambda: f.read(4096), b""):
+            m.update(chunk)
+
+    return m.hexdigest()