fix WASM compilation errors

CMakeLists.txt

@@ -51,6 +51,14 @@ target_compile_definitions(mo_simulator PUBLIC
 add_subdirectory(lib/MicroOcpp)
 target_link_libraries(mo_simulator PUBLIC MicroOcpp)
 
+# disable some warnings for MbedTLS which cause compilation errors on WASM
+if (${CMAKE_SYSTEM_NAME} MATCHES "Emscripten")
+    add_compile_options(
+        -Wno-unused-but-set-variable
+        -Wno-documentation
+    )
+endif()
+
 # disable MbedTLS unit tests and test suites (not needed for the Simualtor)
 option(ENABLE_TESTING  "Build mbed TLS tests."    OFF)
 option(ENABLE_PROGRAMS "Build mbed TLS programs." OFF)

src/net_wasm.cpp

@@ -11,7 +11,6 @@
 #include <MicroOcpp/Core/Connection.h>
 #include <MicroOcpp/Core/Configuration.h>
 #include <MicroOcpp/Debug.h>
-#include "base64.hpp"
 
 #include "api.h"
 
@@ -308,19 +307,7 @@ class WasmOcppConnection : public Connection {
         }
 
         if (!auth_key.empty()) {
-            std::string token = cb_id + ":" + auth_key;
-
-            MO_DBG_DEBUG("auth Token=%s", token.c_str());
-
-            unsigned int base64_length = encode_base64_length(token.length());
-            std::vector<unsigned char> base64 (base64_length + 1);
-
-            // encode_base64() places a null terminator automatically, because the output is a string
-            base64_length = encode_base64((const unsigned char*) token.c_str(), token.length(), &base64[0]);
-
-            MO_DBG_DEBUG("auth64 len=%u, auth64 Token=%s", base64_length, &base64[0]);
-
-            basic_auth64 = (const char*) &base64[0];
+            MO_DBG_WARN("WASM app does not support Securiy Profile 2 yet");
         } else {
             MO_DBG_DEBUG("no authentication");
             (void) 0;