Fix jvm native lib handling

Author: tobias-schwerdtfeger

.github/workflows/pullrequest.yml

@@ -23,10 +23,8 @@ jobs:
       - name: Install dependencies
         shell: bash
         run: |
-          cat /proc/mounts | grep /tmp
           sudo apt-get update
           sudo apt-get install -y cmake swig ninja-build clang clang-tools libc++-dev libc++abi-dev
-          file /lib/x86_64-linux-gnu/libc++.so
       - name: Setup Android SDK
         uses: android-actions/setup-android@v3
       - name: Setup Android NDK
@@ -37,13 +35,13 @@ jobs:
           echo "ANDROID_NDK_ROOT=$ANDROID_SDK_ROOT/ndk/27.2.12479018" >> $GITHUB_ENV
           echo "$ANDROID_NDK_ROOT/toolchains/llvm/prebuilt/linux-x86_64/bin" >> $GITHUB_PATH
 
-#      - name: KTLint Check
-#        run: |
-#          ./gradlew ktlintCheck
-#
-#      - name: Detekt Check
-#        run: |
-#          ./gradlew detekt
+      - name: KTLint Check
+        run: |
+          ./gradlew ktlintCheck
+
+      - name: Detekt Check
+        run: |
+          ./gradlew detekt
 
       - name: Test
         shell: bash

crypto-jvm-lib/src/main/kotlin/de/gematik/openhealth/crypto/internal/interop/NativeLoader.kt

@@ -49,13 +49,22 @@ fun loadNativeLibrary() {
 
         val libResUrl = ClassLoader.getSystemResource("$hostOs-$hostArch/$libName")
 
-        println("Debug: libResUrl " + libResUrl.path)
+        val cacheFilePath = getCacheDir() + File.pathSeparator + libName
+        val cacheFile = File(cacheFilePath)
+        cacheFile.parentFile.mkdirs()
+        libResUrl.openStream().copyTo(cacheFile.outputStream())
 
-        val tempLib = File.createTempFile("lib", libName)
-        println("Debug: tempLib " + tempLib.absolutePath)
-        tempLib.deleteOnExit()
-        libResUrl.openStream().copyTo(tempLib.outputStream())
-
-        System.load(tempLib.absolutePath)
+        System.load(cacheFile.absolutePath)
     }
 }
+
+private fun getCacheDir(): String {
+    val os = System.getProperty("os.name").lowercase()
+    val userHome = System.getProperty("user.home")
+
+    return when {
+        os.contains("win") -> System.getenv("LOCALAPPDATA") ?: "$userHome\\AppData\\Local"
+        os.contains("mac") -> "$userHome/Library/Caches"
+        else -> System.getenv("XDG_CACHE_HOME") ?: "$userHome/.cache"
+    } + File.pathSeparator + "de.gematik.openhealth.crypto"
+}