From 53a6b4535d3b89a0baf553314b35496b20ca109b Mon Sep 17 00:00:00 2001
From: Alexandre Paillier <alexandre.paillier@ledger.fr>
Date: Mon, 20 May 2024 18:19:22 +0200
Subject: [PATCH] Add date/time support in client

---
 client/src/ledger_app_clients/ethereum/client.py  |  3 +++
 .../ethereum/command_builder.py                   |  7 +++++++
 .../ethereum/eip712/InputData.py                  | 15 +++++++++++++++
 3 files changed, 25 insertions(+)

diff --git a/client/src/ledger_app_clients/ethereum/client.py b/client/src/ledger_app_clients/ethereum/client.py
index 2061ef56f4..a09bd41cea 100644
--- a/client/src/ledger_app_clients/ethereum/client.py
+++ b/client/src/ledger_app_clients/ethereum/client.py
@@ -115,6 +115,9 @@ def eip712_filtering_amount_join_value(self, token_idx: int, name: str, sig: byt
                                                                                          name,
                                                                                          sig))
 
+    def eip712_filtering_datetime(self, name: str, sig: bytes):
+        return self._exchange_async(self._cmd_builder.eip712_filtering_datetime(name, sig))
+
     def eip712_filtering_raw(self, name: str, sig: bytes):
         return self._exchange_async(self._cmd_builder.eip712_filtering_raw(name, sig))
 
diff --git a/client/src/ledger_app_clients/ethereum/command_builder.py b/client/src/ledger_app_clients/ethereum/command_builder.py
index 1e9466bb6e..bcd505cbe4 100644
--- a/client/src/ledger_app_clients/ethereum/command_builder.py
+++ b/client/src/ledger_app_clients/ethereum/command_builder.py
@@ -42,6 +42,7 @@ class P2Type(IntEnum):
     NEW_IMPLEM = 0x01
     FILTERING_ACTIVATE = 0x00
     FILTERING_MESSAGE_INFO = 0x0f
+    FILTERING_DATETIME = 0xfc
     FILTERING_TOKEN_ADDR_CHECK = 0xfd
     FILTERING_AMOUNT_FIELD = 0xfe
     FILTERING_RAW = 0xff
@@ -197,6 +198,12 @@ def eip712_filtering_amount_join_value(self, token_idx: int, name: str, sig: byt
                                P2Type.FILTERING_AMOUNT_FIELD,
                                data)
 
+    def eip712_filtering_datetime(self, name: str, sig: bytes) -> bytes:
+        return self._serialize(InsType.EIP712_SEND_FILTERING,
+                               P1Type.COMPLETE_SEND,
+                               P2Type.FILTERING_DATETIME,
+                               self._eip712_filtering_send_name(name, sig))
+
     def eip712_filtering_raw(self, name: str, sig: bytes) -> bytes:
         return self._serialize(InsType.EIP712_SEND_FILTERING,
                                P1Type.COMPLETE_SEND,
diff --git a/client/src/ledger_app_clients/ethereum/eip712/InputData.py b/client/src/ledger_app_clients/ethereum/eip712/InputData.py
index f507748845..e5ffbbd1d0 100644
--- a/client/src/ledger_app_clients/ethereum/eip712/InputData.py
+++ b/client/src/ledger_app_clients/ethereum/eip712/InputData.py
@@ -205,6 +205,8 @@ def send_struct_impl_field(value, field):
             elif filtering_paths[path]["type"] == "amount_join_value":
                 send_filtering_amount_join_value(filtering_paths[path]["token"],
                                                  filtering_paths[path]["name"])
+            elif filtering_paths[path]["type"] == "datetime":
+                send_filtering_datetime(filtering_paths[path]["name"])
             elif filtering_paths[path]["type"] == "raw":
                 send_filtering_raw(filtering_paths[path]["name"])
             else:
@@ -311,6 +313,19 @@ def send_filtering_amount_join_value(token_idx: int, display_name: str):
         pass
 
 
+def send_filtering_datetime(display_name: str):
+    global sig_ctx
+
+    path_str = ".".join(current_path)
+
+    to_sign = start_signature_payload(sig_ctx, 33)
+    to_sign += path_str.encode()
+    to_sign += display_name.encode()
+    sig = keychain.sign_data(keychain.Key.CAL, to_sign)
+    with app_client.eip712_filtering_datetime(display_name, sig):
+        pass
+
+
 # ledgerjs doesn't actually sign anything, and instead uses already pre-computed signatures
 def send_filtering_raw(display_name):
     global sig_ctx