Added AndroidHelper class+JNI to hold Android specific initialization and stuff. Set HOME env var for pEpEngine to behave

android/build.gradle

@@ -30,7 +30,7 @@ android {
             manifest.srcFile 'AndroidManifest.xml'
 
             // where to find generated Java source
-            java.srcDirs = ['../src']
+            java.srcDirs = ['../src', 'src']
 
             // disable automatic ndk-build call, which ignore our Android.mk
             jni.srcDirs = []

android/jni/Android.mk

@@ -79,10 +79,10 @@ LOCAL_SRC_FILES  := \
 		  ../../src/org_pEp_jniadapter_Message.cc \
 		  ../../src/throw_pEp_exception.cc \
 		  ../../src/jniutils.cc
-
+LOCAL_C_INCLUDES := ../../src
-LOCAL_C_INCLUDES := ../src
-
-
 include $(BUILD_SHARED_LIBRARY)
 
-
+include $(CLEAR_VARS)
+LOCAL_MODULE     := pEpJNIAndroidHelper
+LOCAL_SRC_FILES  := org_pEp_jniadapter_AndroidHelper.cc
+include $(BUILD_SHARED_LIBRARY)

android/jni/org_pEp_jniadapter_AndroidHelper.cc

@@ -0,0 +1,20 @@
+
+#include "org_pEp_jniadapter_AndroidHelper.h"
+
+#include <stdlib.h>
+
+extern "C" {
+
+JNIEXPORT jint JNICALL Java_org_pEp_jniadapter_AndroidHelper_setenv
+  (JNIEnv* env, jclass clazz, jstring key, jstring value, jboolean overwrite)
+{
+    char* k = (char *) env->GetStringUTFChars(key, NULL);
+    char* v = (char *) env->GetStringUTFChars(value, NULL);
+    int err = setenv(k, v, overwrite);
+    env->ReleaseStringUTFChars(key, k);
+    env->ReleaseStringUTFChars(value, v);
+    return err;
+}
+
+} // extern "C"
+

android/jni/org_pEp_jniadapter_AndroidHelper.h

@@ -0,0 +1,21 @@
+/* DO NOT EDIT THIS FILE - it is machine generated */
+#include <jni.h>
+/* Header for class org_pEp_jniadapter_AndroidHelper */
+
+#ifndef _Included_org_pEp_jniadapter_AndroidHelper
+#define _Included_org_pEp_jniadapter_AndroidHelper
+#ifdef __cplusplus
+extern "C" {
+#endif
+/*
+ * Class:     org_pEp_jniadapter_AndroidHelper
+ * Method:    setenv
+ * Signature: (Ljava/lang/String;Ljava/lang/String;Z)I
+ */
+JNIEXPORT jint JNICALL Java_org_pEp_jniadapter_AndroidHelper_setenv
+  (JNIEnv *, jclass, jstring, jstring, jboolean);
+
+#ifdef __cplusplus
+}
+#endif
+#endif

android/src/org/pEp/jniadapter/AndroidHelper.java

@@ -0,0 +1,17 @@
+package org.pEp.jniadapter;
+
+import android.content.Context;
+
+public class AndroidHelper {
+    static {
+        System.loadLibrary("pEpJNIAndroidHelper");
+    }
+
+    private static native int setenv(String key, String value, boolean overwrite);
+
+    public static void setup(Context c) {
+        setenv("HOME", 
+               c.getDir("home", Context.MODE_PRIVATE).getAbsolutePath(),
+               true);
+    }
+}