Explicit unknown ticker

src/handle_get_printable_amount.c

@@ -31,6 +31,10 @@ void handle_get_printable_amount(get_printable_amount_parameters_t* params,
     }
     // If the amount is a fee, the ticker should be the chain's native currency
     if (params->is_fee) {
+        // fallback mechanism in the absence of chain ID in swap config
+        if (chain_id == 0) {
+            chain_id = config->chainId;
+        }
         strlcpy(ticker, get_displayable_ticker(&chain_id, config), sizeof(ticker));
         decimals = WEI_TO_ETHER;
     }

src/handle_swap_sign_transaction.c

@@ -49,6 +49,10 @@ bool copy_transaction_parameters(create_transaction_parameters_t* sign_transacti
         return false;
     }
 
+    // fallback mechanism in the absence of chain ID in swap config
+    if (chain_id == 0) {
+        chain_id = config->chainId;
+    }
     // If the amount is a fee, its value is nominated in ETH even if we're doing an ERC20 swap
     strlcpy(ticker, get_displayable_ticker(&chain_id, config), sizeof(ticker));
     decimals = WEI_TO_ETHER;

src/network.c

@@ -11,6 +11,8 @@ typedef struct network_info_s {
     uint64_t chain_id;
 } network_info_t;
 
+static const char *unknown_ticker = "???";
+
 // Mappping of chain ids to networks.
 static const network_info_t NETWORK_MAPPING[] = {
     {.chain_id = 1, .name = "Ethereum", .ticker = "ETH"},
@@ -140,7 +142,11 @@ const char *get_displayable_ticker(const uint64_t *chain_id, const chain_config_
     const char *ticker = get_network_ticker_from_chain_id(chain_id);
 
     if (ticker == NULL) {
-        ticker = chain_cfg->coinName;
+        if (*chain_id == chain_cfg->chainId) {
+            ticker = chain_cfg->coinName;
+        } else {
+            ticker = unknown_ticker;
+        }
     }
     return ticker;
 }

tests/speculos/test_sign_cmd.py

@@ -83,90 +83,6 @@ def test_sign_simple(cmd):
     assert v == 0x26 # 38
     assert r.hex() == "6f389d15320f0501383526ed03de917c14212716f09a262dbc98431086a5db49"
     assert s.hex() == "0dc994b7b97230bb35fdf6fec2f4d8ff4cfb8bfeb2a652c364c738ff033c05dd"
-
-
-def test_sign_dai_coin_type_on_network_5234(cmd):
-    result: list = []
-
-    # DAI coin type
-    bip32_path="44'/700'/1'/0/0"
-
-    transaction = Transaction(
-        txType=0xEB,
-        nonce=0,
-        gasPrice=0x0306dc4200,
-        gasLimit=0x5208,
-        to="0x5a321744667052affa8386ed49e00ef223cbffc3",
-        value=0x6f9c9e7bf61818,
-        chainID=5243,
-    )
-
-    with cmd.simple_sign_tx(bip32_path=bip32_path, transaction=transaction, result=result) as ex:
-        sleep(0.5)
-
-        if cmd.model == "nanos":
-            # Review transaction
-            compare_screenshot(cmd, f"screenshots/sign/{PATH_IMG[cmd.model]}/dai_coin_type_on_network_5234/00000.png")
-            cmd.client.press_and_release('right')
-
-            # Amount 1/3, 2/3, 3/3
-            compare_screenshot(cmd, f"screenshots/sign/{PATH_IMG[cmd.model]}/dai_coin_type_on_network_5234/00001.png")
-            cmd.client.press_and_release('right')
-            compare_screenshot(cmd, f"screenshots/sign/{PATH_IMG[cmd.model]}/dai_coin_type_on_network_5234/00002.png")
-            cmd.client.press_and_release('right')
-            compare_screenshot(cmd, f"screenshots/sign/{PATH_IMG[cmd.model]}/dai_coin_type_on_network_5234/00003.png")
-            cmd.client.press_and_release('right')
-
-            # Address 1/3, 2/3, 3/3
-            compare_screenshot(cmd, f"screenshots/sign/{PATH_IMG[cmd.model]}/dai_coin_type_on_network_5234/00004.png")
-            cmd.client.press_and_release('right')
-            compare_screenshot(cmd, f"screenshots/sign/{PATH_IMG[cmd.model]}/dai_coin_type_on_network_5234/00005.png")
-            cmd.client.press_and_release('right')
-            compare_screenshot(cmd, f"screenshots/sign/{PATH_IMG[cmd.model]}/dai_coin_type_on_network_5234/00006.png")
-            cmd.client.press_and_release('right')
-
-            # Network 5243
-            compare_screenshot(cmd, f"screenshots/sign/{PATH_IMG[cmd.model]}/dai_coin_type_on_network_5234/00007.png")
-            cmd.client.press_and_release('right')
-
-            # Max Fees
-            compare_screenshot(cmd, f"screenshots/sign/{PATH_IMG[cmd.model]}/dai_coin_type_on_network_5234/00008.png")
-            cmd.client.press_and_release('right')
-
-            # Accept and send
-            compare_screenshot(cmd, f"screenshots/sign/{PATH_IMG[cmd.model]}/dai_coin_type_on_network_5234/00009.png")
-            cmd.client.press_and_release('both')
-
-        if cmd.model == "nanox" or cmd.model == "nanosp":
-            # Review transaction
-            compare_screenshot(cmd, f"screenshots/sign/{PATH_IMG[cmd.model]}/dai_coin_type_on_network_5234/00000.png")
-            cmd.client.press_and_release('right')
-
-            # Amount
-            compare_screenshot(cmd, f"screenshots/sign/{PATH_IMG[cmd.model]}/dai_coin_type_on_network_5234/00001.png")
-            cmd.client.press_and_release('right')
-
-            # Address
-            compare_screenshot(cmd, f"screenshots/sign/{PATH_IMG[cmd.model]}/dai_coin_type_on_network_5234/00002.png")
-            cmd.client.press_and_release('right')
-
-            # Network 5243
-            compare_screenshot(cmd, f"screenshots/sign/{PATH_IMG[cmd.model]}/dai_coin_type_on_network_5234/00003.png")
-            cmd.client.press_and_release('right')
-
-            # Max Fees
-            compare_screenshot(cmd, f"screenshots/sign/{PATH_IMG[cmd.model]}/dai_coin_type_on_network_5234/00004.png")
-            cmd.client.press_and_release('right')
-
-            # Accept and send
-            compare_screenshot(cmd, f"screenshots/sign/{PATH_IMG[cmd.model]}/dai_coin_type_on_network_5234/00005.png")
-            cmd.client.press_and_release('both')
-
-    v, r, s = result
-
-    assert v == 0x1A # 26
-    assert r.hex() == "7ebfa5d5cac1e16bb1f1a8c67706b5c6019c0f198df6bb44e742a9de72330961"
-    assert s.hex() == "537419d8d1443d38ea87943c110789decb43b8f4fea8fae256fe842f669da634"
 
 
 def test_sign_reject(cmd):

tests/zemu/src/send.test.js

@@ -36,25 +36,3 @@ nano_models.forEach(function(model) {
       await expect(tx).rejects.toEqual(new TransportStatusError(0x6807));
     }));
 });
-
-nano_models.forEach(function(model) {
-    test('[Nano ' + model.letter + '] Transfer Ether on network 5234 on Ethereum app', zemu(model, async (sim, eth) => {
-
-      const tx = eth.signTransaction(
-        "44'/60'/1'/0/0",
-        'ED44850306DC4200825208945A321744667052AFFA8386ED49E00EF223CBFFC3876F9C9E7BF61818808214728080',
-      );
-
-      await waitForAppScreen(sim);
-      let clicks;
-      if (model.letter === 'S') clicks = 10;
-      else clicks = 6;
-      await sim.navigateAndCompareSnapshots('.', model.name + '_transfer_ethereum_5234_network', [clicks, -1, 0]);
-
-      await expect(tx).resolves.toEqual({
-        "r": "07a7982dfd16360c96a03467877d0cf9c36f799deff4dace250cdb18e28a3b90",
-        "s": "773318a93da2e32c1cf308ddd6add1e8c0d285973e541520a05fb4dc720e4fb1",
-        "v": "2908",
-      });
-    }));
-});