fix: Backend fails to start on GrapheneOS in 6.5.1 (#3106)

* Standardize build config fields to boolean

* Remove call to `free` because it breaks the backend on graphene

Author: islathehut

packages/mobile/android/app/build.gradle

@@ -216,9 +216,10 @@ android {
         }
     }
     buildTypes.each {
-        it.buildConfigField("String", "SHOULD_RUN_BACKEND_WORKER", "\"true\"")
-        it.buildConfigField("String", "QSS_ALLOWED", "\"false\"")
+        it.buildConfigField("Boolean", "SHOULD_RUN_BACKEND_WORKER", "true")
+        it.buildConfigField("Boolean", "QSS_ALLOWED", "false")
         it.buildConfigField("String", "QSS_ENDPOINT", "\"\"")
+        it.buildConfigField("Boolean", "DEBUG", "false")
     }
     buildTypes {
         debug {

packages/mobile/android/app/src/main/cpp/own-native-lib.cpp

@@ -203,7 +203,8 @@ Java_com_quietmobile_Backend_BackendWorker_startNodeWithArguments(
     current_args_position += strlen(current_args_position) + 1;
   }
 
-  free(args_buffer);
+  // NOTE: this works on android but breaks on GrapheneOS which uses its own hardened version of calloc/malloc/free
+  // free(args_buffer);
 
   rn_register_bridge_cb(&rcv_message);
 

packages/mobile/android/app/src/main/java/com/quietmobile/MainActivity.kt

@@ -44,7 +44,7 @@ class MainActivity : ReactActivity() {
         val intent = intent
         checkAgainstIntentUpdate(intent)
 
-        if (BuildConfig.SHOULD_RUN_BACKEND_WORKER === "true") {
+        if (BuildConfig.SHOULD_RUN_BACKEND_WORKER) {
             val context = applicationContext
             BackendWorkManager(context).enqueueRequests()
         }