Swap cosmos support (#3)

* add cosmos support

* add snapshots

* add CI support

.github/workflows/reusable_swap_functional_tests.yml

@@ -115,6 +115,15 @@ on:
         default: 'LedgerHQ/app-cardano'
         type: string
 
+      branch_for_cosmos:
+        required: false
+        default: 'main'
+        type: string
+      repo_for_cosmos:
+        required: false
+        default: 'cosmos/ledger-cosmos'
+        type: string
+
       test_filter:
         required: false
         default: '""'
@@ -177,6 +186,9 @@ jobs:
         - name: cardano
           repo: ${{ inputs.repo_for_cardano }}
           branch: ${{ inputs.branch_for_cardano }}
+        - name: cosmos
+          repo: ${{ inputs.repo_for_cosmos }}
+          branch: ${{ inputs.branch_for_cosmos }}
 
     uses: LedgerHQ/ledger-app-workflows/.github/workflows/reusable_build.yml@v1
     with:

test/python/apps/cal.py

@@ -21,6 +21,7 @@
 from .ton import TON_PACKED_DERIVATION_PATH, TON_CONF
 from .tron import TRX_PACKED_DERIVATION_PATH, TRX_CONF
 from .tron import TRX_USDT_CONF, TRX_USDC_CONF, TRX_TUSD_CONF, TRX_USDD_CONF
+from .cosmos import COSMOS_PACKED_DERIVATION_PATH, COSMOS_CONF
 from .cardano import ADA_BYRON_PACKED_DERIVATION_PATH, ADA_SHELLEY_PACKED_DERIVATION_PATH, ADA_CONF
 
 @dataclass
@@ -55,10 +56,10 @@ def get_conf_for_ticker(self, overload_signer: Optional[SigningAuthority]=None)
 USDC_CURRENCY_CONFIGURATION = CurrencyConfiguration(ticker="USDC", conf=TRX_USDC_CONF, packed_derivation_path=TRX_PACKED_DERIVATION_PATH)
 TUSD_CURRENCY_CONFIGURATION = CurrencyConfiguration(ticker="TUSD", conf=TRX_TUSD_CONF, packed_derivation_path=TRX_PACKED_DERIVATION_PATH)
 USDD_CURRENCY_CONFIGURATION = CurrencyConfiguration(ticker="USDD", conf=TRX_USDD_CONF, packed_derivation_path=TRX_PACKED_DERIVATION_PATH)
+COSMOS_CURRENCY_CONFIGURATION = CurrencyConfiguration(ticker="ATOM", conf=COSMOS_CONF, packed_derivation_path=COSMOS_PACKED_DERIVATION_PATH)
 ADA_BYRON_CURRENCY_CONFIGURATION = CurrencyConfiguration(ticker="ADA", conf=ADA_CONF, packed_derivation_path=ADA_BYRON_PACKED_DERIVATION_PATH)
 ADA_SHELLEY_CURRENCY_CONFIGURATION = CurrencyConfiguration(ticker="ADA", conf=ADA_CONF, packed_derivation_path=ADA_SHELLEY_PACKED_DERIVATION_PATH)
 
-
 # Helper that can be called from outside if we want to generate errors easily
 def sign_currency_conf(currency_conf: bytes, overload_signer: Optional[SigningAuthority]=None) -> bytes:
     if overload_signer is not None:

test/python/apps/cosmos.py

@@ -0,0 +1,93 @@
+import traceback
+import requests
+import json
+from enum import IntEnum
+
+from nacl.encoding import HexEncoder
+from nacl.signing import VerifyKey,SigningKey
+from nacl.exceptions import BadSignatureError
+
+from ragger.utils import create_currency_config
+from ragger.bip import pack_derivation_path, bitcoin_pack_derivation_path, BtcDerivationPathFormat
+from ragger.error import ExceptionRAPDU
+from scalecodec.base import RuntimeConfiguration
+from scalecodec.type_registry import load_type_registry_preset
+from scalecodec.utils.ss58 import ss58_decode
+
+from ecdsa import VerifyingKey, SECP256k1
+from ecdsa.util import string_to_number
+
+COSMOS_CONF = create_currency_config("ATOM", "Cosmos")
+COSMOS_PACKED_DERIVATION_PATH = bitcoin_pack_derivation_path(BtcDerivationPathFormat.LEGACY, "m/44'/118'/5'/0'/3")
+COSMOS_PACKED_DERIVATION_PATH_SIGN_INIT = bytes([0x2c, 0x00, 0x00, 0x80,
+                                              0x76, 0x00, 0x00, 0x80,
+                                              0x05, 0x00, 0x00, 0x80,
+                                              0x00, 0x00, 0x00, 0x00,
+                                              0x03, 0x00, 0x00, 0x00])
+MAX_CHUNK_SIZE = 250
+
+class Errors:
+    ERR_SWAP_CHECK_WRONG_METHOD = 0x6984
+    ERR_SWAP_CHECK_WRONG_METHOD_ARGS_CNT = 0x6984
+    ERR_SWAP_CHECK_WRONG_DEST_ADDR = 0x6984
+    ERR_SWAP_CHECK_WRONG_AMOUNT = 0x6984
+    ERR_SWAP_CHECK_WRONG_FEES = 0x6984
+    ERR_SWAP_CHECK_WRONG_MEMO = 0x6984
+
+class Ins():
+    GET_PUBLIC_KEY = 0x04
+    SIGN = 0x02
+
+class GetAddrP1:
+    NO_CONFIRM = 0x00
+    CONFIRM = 0x01
+
+class SignP1:
+    INIT = 0x00
+    ADD = 0x01
+    LAST = 0x02
+
+class SignP2:
+    JSON_MODE = 0x00
+    TEXTUAL_MODE = 0x01
+
+class CosmosClient:
+    CLA = 0x55
+    def __init__(self, client):
+        self._client = client
+
+    @property
+    def client(self):
+        return self._client
+
+    def get_pubkey(self):
+        # sizeof(cosmos) + cosmos
+        data = bytes([0x06,0x63, 0x6f, 0x73, 0x6d, 0x6f, 0x73]) + COSMOS_PACKED_DERIVATION_PATH_SIGN_INIT
+        msg = self.client.exchange(self.CLA, ins=Ins.GET_PUBLIC_KEY, p1=GetAddrP1.NO_CONFIRM, data=data)
+        return msg.data[:32].hex().encode()
+
+
+    def perform_cosmos_transaction(self, destination, send_amount, fees, memo) -> bytes:
+        # Get public key.
+        key = self.get_pubkey()
+
+        #Amounts are in uatom for the app aprser to return ATOM ticker and format
+        tx = f'''{{"account_number":"0","chain_id":"cosmoshub-4","fee":{{"amount":[{{"amount":"{fees}","denom":"uatom"}}],"gas":"10000"}},"memo":"{memo}","msgs":[{{"inputs":[{{"address":"{destination}","coins":[{{"amount":"{send_amount}","denom":"uatom"}}]}}],"outputs":[{{"address":"{destination}","coins":[{{"amount":"{send_amount}","denom":"uatom"}}]}}]}}],"sequence":"1"}}'''
+
+        # Convert the JSON to bytes
+        tx_blob = tx.encode('utf-8')
+
+        # Send the first chunk of the transaction path + cosmos hrp
+        chunk_0 = COSMOS_PACKED_DERIVATION_PATH_SIGN_INIT + bytes([0x06,0x63, 0x6f, 0x73, 0x6d, 0x6f, 0x73])
+        self.client.exchange(self.CLA, ins=Ins.SIGN, p1=SignP1.INIT, data=chunk_0)
+
+        message_splited = [tx_blob[x:x + MAX_CHUNK_SIZE] for x in range(0, len(tx_blob), MAX_CHUNK_SIZE)]
+        for index, chunk in enumerate(message_splited):
+            payload_type = SignP1.ADD
+            if index == len(message_splited) - 1:
+                    payload_type = SignP1.LAST
+
+            response = self.client.exchange(self.CLA, ins=Ins.SIGN, p1=payload_type, p2=SignP2.JSON_MODE, data=chunk)
+
+        #TODO: Verify signature
+        return True

test/python/conftest.py

@@ -24,6 +24,7 @@
     "DOT": "Polkadot",
     "tron": "Tron",
     "ton": "TON",
+    "cosmos": "Cosmos",
     "cardano": "Cardano ADA",
 }