android fix - libwg-go added

client/android/wireguard/libwg-go/jni.c

@@ -0,0 +1,70 @@
+/* SPDX-License-Identifier: Apache-2.0
+ *
+ * Copyright © 2017-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights
+ * Reserved.
+ */
+
+#include <jni.h>
+#include <stdlib.h>
+#include <string.h>
+
+struct go_string {
+  const char* str;
+  long n;
+};
+extern int wgTurnOn(struct go_string ifname, int tun_fd,
+                    struct go_string settings);
+extern void wgTurnOff(int handle);
+extern int wgGetSocketV4(int handle);
+extern int wgGetSocketV6(int handle);
+extern char* wgGetConfig(int handle);
+extern char* wgVersion();
+
+JNIEXPORT jint JNICALL Java_org_mozilla_firefox_vpn_VPNService_wgTurnOn(
+    JNIEnv* env, jclass c, jstring ifname, jint tun_fd, jstring settings) {
+  const char* ifname_str = (*env)->GetStringUTFChars(env, ifname, 0);
+  size_t ifname_len = (*env)->GetStringUTFLength(env, ifname);
+  const char* settings_str = (*env)->GetStringUTFChars(env, settings, 0);
+  size_t settings_len = (*env)->GetStringUTFLength(env, settings);
+  int ret =
+      wgTurnOn((struct go_string){.str = ifname_str, .n = ifname_len}, tun_fd,
+               (struct go_string){.str = settings_str, .n = settings_len});
+  (*env)->ReleaseStringUTFChars(env, ifname, ifname_str);
+  (*env)->ReleaseStringUTFChars(env, settings, settings_str);
+  return ret;
+}
+
+JNIEXPORT void JNICALL Java_org_mozilla_firefox_vpn_VPNService_wgTurnOff(
+    JNIEnv* env, jclass c, jint handle) {
+  wgTurnOff(handle);
+}
+
+JNIEXPORT jint JNICALL Java_org_mozilla_firefox_vpn_VPNService_wgGetSocketV4(
+    JNIEnv* env, jclass c, jint handle) {
+  return wgGetSocketV4(handle);
+}
+
+JNIEXPORT jint JNICALL Java_org_mozilla_firefox_vpn_VPNService_wgGetSocketV6(
+    JNIEnv* env, jclass c, jint handle) {
+  return wgGetSocketV6(handle);
+}
+
+JNIEXPORT jstring JNICALL Java_org_mozilla_firefox_vpn_VPNService_wgGetConfig(
+    JNIEnv* env, jclass c, jint handle) {
+  jstring ret;
+  char* config = wgGetConfig(handle);
+  if (!config) return NULL;
+  ret = (*env)->NewStringUTF(env, config);
+  free(config);
+  return ret;
+}
+
+JNIEXPORT jstring JNICALL
+Java_org_mozilla_firefox_vpn_VPNService_wgVersion(JNIEnv* env, jclass c) {
+  jstring ret;
+  char* version = wgVersion();
+  if (!version) return NULL;
+  ret = (*env)->NewStringUTF(env, version);
+  free(version);
+  return ret;
+}