From c8360741a47c01731d2cdb4dda6e3f3b46c97254 Mon Sep 17 00:00:00 2001
From: Alexandre Paillier <alexandre.paillier@ledger.fr>
Date: Fri, 16 Jun 2023 15:52:43 +0200
Subject: [PATCH] Activated ENS on other Ethereum-compatible chains

---
 src_common/network.c                                     | 4 ++++
 src_common/network.h                                     | 2 ++
 src_features/provideDomainName/cmd_provide_domain_name.c | 5 +++--
 3 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/src_common/network.c b/src_common/network.c
index 410baab..9959ee4 100644
--- a/src_common/network.c
+++ b/src_common/network.c
@@ -92,3 +92,7 @@ const char *get_network_ticker_from_chain_id(const uint64_t *chain_id) {
     }
     return PIC(net->ticker);
 }
+
+bool chain_is_ethereum_compatible(const uint64_t *chain_id) {
+    return get_network_from_chain_id(chain_id) != NULL;
+}
diff --git a/src_common/network.h b/src_common/network.h
index 7980c16..8361bcb 100644
--- a/src_common/network.h
+++ b/src_common/network.h
@@ -7,4 +7,6 @@
 const char *get_network_name_from_chain_id(const uint64_t *chain_id);
 const char *get_network_ticker_from_chain_id(const uint64_t *chain_id);
 
+bool chain_is_ethereum_compatible(const uint64_t *chain_id);
+
 #endif  // _NETWORK_H_
diff --git a/src_features/provideDomainName/cmd_provide_domain_name.c b/src_features/provideDomainName/cmd_provide_domain_name.c
index 0d0849f..8cd974b 100644
--- a/src_features/provideDomainName/cmd_provide_domain_name.c
+++ b/src_features/provideDomainName/cmd_provide_domain_name.c
@@ -10,6 +10,7 @@
 #include "challenge.h"
 #include "mem.h"
 #include "hash_bytes.h"
+#include "network.h"
 
 static const uint8_t DOMAIN_NAME_PUB_KEY[] = {
 #ifdef HAVE_DOMAIN_NAME_TEST_KEY
@@ -124,8 +125,8 @@ bool has_domain_name(const uint64_t *chain_id, const uint8_t *addr) {
     bool ret = false;
 
     if (g_domain_name_info.valid) {
-        // TODO: Remove once other domain name providers are supported
-        if ((*chain_id == ETHEREUM_MAINNET_CHAINID) &&
+        // Check if chain ID is known to be Ethereum-compatible (same derivation path)
+        if ((chain_is_ethereum_compatible(chain_id)) &&
             (memcmp(addr, g_domain_name_info.addr, ADDRESS_LENGTH) == 0)) {
             ret = true;
         }