From 105dc21f19a3b3ebd64ec75f1295ec6825f387e3 Mon Sep 17 00:00:00 2001
From: Z4karia <92750334+Z4karia@users.noreply.github.com>
Date: Fri, 12 Apr 2024 13:56:02 +0000
Subject: [PATCH] Remove chain configuration handling

---
 app/src/apdu_handler.c |  5 ++---
 app/src/chain_config.c | 29 +----------------------------
 app/src/chain_config.h |  2 +-
 3 files changed, 4 insertions(+), 32 deletions(-)

diff --git a/app/src/apdu_handler.c b/app/src/apdu_handler.c
index a78f56ca..b75983e8 100644
--- a/app/src/apdu_handler.c
+++ b/app/src/apdu_handler.c
@@ -113,8 +113,7 @@ static void extractHDPath_HRP(uint32_t rx, uint32_t offset) {
 
     // Check if HRP was sent
     if ((rx - offset) > sizeof(uint32_t) * HDPATH_LEN_DEFAULT) {
-        uint8_t hrp_bech32_len = extractHRP(rx, offset + sizeof(uint32_t) * HDPATH_LEN_DEFAULT);
-        encoding = checkChainConfig(hdPath[1], bech32_hrp, hrp_bech32_len);
+        encoding = checkChainConfig(hdPath[1]);
         if (encoding == UNSUPPORTED) {
             ZEMU_LOGF(50, "Chain config not supported for: %s\n", bech32_hrp)
             THROW(APDU_CODE_COMMAND_NOT_ALLOWED);
@@ -160,7 +159,7 @@ __Z_INLINE void handleGetAddrSecp256K1(volatile uint32_t *flags, volatile uint32
     extractHDPath(rx, OFFSET_DATA + 1 + len);
 
     // Verify encoding
-    encoding = checkChainConfig(hdPath[1], bech32_hrp, bech32_hrp_len);
+    encoding = checkChainConfig(hdPath[1]);
     if (encoding == UNSUPPORTED) {
         ZEMU_LOGF(50, "Chain config not supported for: %s\n", bech32_hrp)
         THROW(APDU_CODE_COMMAND_NOT_ALLOWED);
diff --git a/app/src/chain_config.c b/app/src/chain_config.c
index 8ffac9cf..34b6d0ff 100644
--- a/app/src/chain_config.c
+++ b/app/src/chain_config.c
@@ -16,37 +16,10 @@
 #include "chain_config.h"
 #include <zxmacros.h>
 
-typedef struct {
-    const uint32_t path;
-    const char *hrp;
-    const address_encoding_e encoding;
-} chain_config_t;
-
-// To enable custom config for a new chain, just add a new entry in this array with path, hrp and encoding
-static const chain_config_t chainConfig[] = {
-    // {118, cosmos, BECH32_COSMOS},
-    {60, "inj", BECH32_ETH},
-    {60, "evmos", BECH32_ETH}
-};
-
-static const uint32_t chainConfigLen = sizeof(chainConfig) / sizeof(chainConfig[0]);
-
-address_encoding_e checkChainConfig(uint32_t path, const char* hrp, uint8_t hrpLen) {
+address_encoding_e checkChainConfig(uint32_t path) {
     // Always allowed for 118 (default Cosmos)
     if (path == HDPATH_1_DEFAULT) {
         return BECH32_COSMOS;
     }
-
-    // Check special cases
-    for (uint32_t i = 0; i < chainConfigLen; i++) {
-        if (path == (0x80000000u | chainConfig[i].path)) {
-            const char* hrpPtr = (const char *) PIC(chainConfig[i].hrp);
-            const uint16_t hrpPtrLen = strlen(hrpPtr);
-            if (hrpPtrLen == hrpLen && memcmp(hrpPtr, hrp, hrpLen) == 0) {
-                return chainConfig[i].encoding;
-            }
-        }
-    }
-
     return UNSUPPORTED;
 }
diff --git a/app/src/chain_config.h b/app/src/chain_config.h
index 3c0409b7..81382220 100644
--- a/app/src/chain_config.h
+++ b/app/src/chain_config.h
@@ -23,7 +23,7 @@ extern "C" {
 #include <stdbool.h>
 #include "coin.h"
 
-address_encoding_e checkChainConfig(uint32_t path, const char* hrp, uint8_t hrpLen);
+address_encoding_e checkChainConfig(uint32_t path);
 
 #ifdef __cplusplus
 }