Fix ESP32 core v2.x Mbed TLS compilation error

Author: mobizt

README.md

@@ -4,8 +4,6 @@
 
 ![GitHub Release](https://img.shields.io/github/v/release/mobizt/FirebaseClient) ![Arduino](https://www.ardu-badge.com/badge/FirebaseClient.svg) ![PlatformIO](https://badges.registry.platformio.org/packages/mobizt/library/FirebaseClient.svg) ![GitHub Release Date](https://img.shields.io/github/release-date/mobizt/FirebaseClient)
 
-Revision `2025-05-25`
-
 ## Introduction
 
 Async Firebase Client library for Arduino Documentation.
@@ -714,4 +712,4 @@ Permission is hereby granted, free of charge, to any person obtaining a copy of
 
 `THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.`
 
-*Last updated 2025-05-25 UTC.*
+*Last updated 2025-05-26 UTC.*

library.json

@@ -1,6 +1,6 @@
 {
   "name": "FirebaseClient",
-  "version": "2.1.1",
+  "version": "2.1.2",
   "keywords": "communication, REST, esp32, esp8266, arduino",
   "description": "Async Firebase Client library for Arduino.",
   "repository": {

library.properties

@@ -1,6 +1,6 @@
 name=FirebaseClient
 
-version=2.1.1
+version=2.1.2
 
 author=Mobizt
 

src/core/Core.h

@@ -7,7 +7,7 @@
 #undef FIREBASE_CLIENT_VERSION
 #endif
 
-#define FIREBASE_CLIENT_VERSION "2.1.1"
+#define FIREBASE_CLIENT_VERSION "2.1.2"
 
 static void sys_idle()
 {

src/core/JWT/JWT.cpp

@@ -12,6 +12,14 @@
 
 #if defined(ENABLE_JWT)
 
+#if defined(ESP32)
+#if defined(ESP_ARDUINO_VERSION)
+#if ESP_ARDUINO_VERSION > ESP_ARDUINO_VERSION_VAL(3, 0, 0)
+#define ESP32_CORE_V3_UP
+#endif
+#endif
+#endif
+
 #if defined(USE_EMBED_SSL_ENGINE) && !defined(CORE_MOCK)
 extern "C"
 {
@@ -238,12 +246,19 @@ namespace firebase_ns
             mbedtls_pk_context *pk_ctx = new mbedtls_pk_context();
             mbedtls_pk_init(pk_ctx);
 
-            // parse priv key
+// parse priv key
+#if defined(ESP32_CORE_V3_UP)
             if (jwt_data.pk.length() > 0)
                 ret = mbedtls_pk_parse_key(pk_ctx, (const unsigned char *)jwt_data.pk.c_str(), jwt_data.pk.length() + 1, 0, 0, 0, 0);
             else if (auth_data->user_auth.sa.val[sa_ns::pk].length() > 0)
                 ret = mbedtls_pk_parse_key(pk_ctx, (const unsigned char *)auth_data->user_auth.sa.val[sa_ns::pk].c_str(), auth_data->user_auth.sa.val[sa_ns::pk].length() + 1, 0, 0, 0, 0);
+#else
+            if (jwt_data.pk.length() > 0)
+                ret = mbedtls_pk_parse_key(pk_ctx, (const unsigned char *)jwt_data.pk.c_str(), jwt_data.pk.length() + 1, NULL, 0);
+            else if (auth_data->user_auth.sa.val[sa_ns::pk].length() > 0)
+                ret = mbedtls_pk_parse_key(pk_ctx, (const unsigned char *)auth_data->user_auth.sa.val[sa_ns::pk].c_str(), auth_data->user_auth.sa.val[sa_ns::pk].length() + 1, NULL, 0);
 
+#endif
             if (ret != 0)
             {
                 jwt_data.err_code = FIREBASE_ERROR_TOKEN_PARSE_PK;
@@ -261,8 +276,11 @@ namespace firebase_ns
             mbedtls_entropy_init(entropy_ctx);
             mbedtls_ctr_drbg_init(ctr_drbg_ctx);
             mbedtls_ctr_drbg_seed(ctr_drbg_ctx, mbedtls_entropy_func, entropy_ctx, NULL, 0);
-
+#if defined(ESP32_CORE_V3_UP)
             ret = mbedtls_pk_sign(pk_ctx, MBEDTLS_MD_SHA256, (const unsigned char *)jwt_data.hash, 32, jwt_data.signature, 256, &sigLen, mbedtls_ctr_drbg_random, ctr_drbg_ctx);
+#else
+            ret = mbedtls_pk_sign(pk_ctx, MBEDTLS_MD_SHA256, (const unsigned char *)jwt_data.hash, 32, jwt_data.signature, &sigLen, mbedtls_ctr_drbg_random, ctr_drbg_ctx);
+#endif
             if (ret != 0)
             {
                 jwt_data.err_code = FIREBASE_ERROR_TOKEN_SIGN;