disable setting keyword arguments without keyword

Author: djosix

src/padding_oracle/solve.py

@@ -31,10 +31,17 @@
 )
 
 
-class BlockResult(NamedTuple):
-    block_index: int
-    solved: list[int | None] | None = None
-    error: None | str = None
+class BlockResult:
+    def __init__(
+        self,
+        block_index: int,
+        *,
+        solved: list[int | None] | None = None,
+        error: None | str = None,
+    ):
+        self.block_index = block_index
+        self.solved = solved
+        self.error = error
 
 
 OracleFunc = Callable[[bytes], bool]
@@ -198,7 +205,7 @@ async def solve_block(ctx: Context, block_index: int, C0: list[int],
         if result is not None and result.error is not None:
             return result
 
-    return BlockResult(block_index, P1_suffix)
+    return BlockResult(block_index, solved=P1_suffix)
 
 
 async def exploit_oracle(ctx: Context, block_index: int,
@@ -217,7 +224,7 @@ async def exploit_oracle(ctx: Context, block_index: int,
     invalid |= len(X1_suffix) > 0 and len(hits) != 1
     if invalid:
         message = f'invalid number of hits: {len(hits)} (block: {block_index}, byte: {index})'
-        return BlockResult(block_index, message)
+        return BlockResult(block_index, error=message)
 
     for byte in hits:
         X1_test = [byte ^ padding, *X1_suffix]