From e42837c3fbf1adff636ac4193684527a84fab3a6 Mon Sep 17 00:00:00 2001
From: emanuele-f <black.silver@hotmail.it>
Date: Wed, 1 Jul 2020 16:27:08 +0200
Subject: [PATCH] Move android code to hin2n

---
 include/n2n.h    |  3 +++
 src/edge_utils.c | 12 ++++++++++++
 src/n2n.c        | 50 ------------------------------------------------
 3 files changed, 15 insertions(+), 50 deletions(-)

diff --git a/include/n2n.h b/include/n2n.h
index a525b3c..ceb5790 100644
--- a/include/n2n.h
+++ b/include/n2n.h
@@ -240,6 +240,7 @@ typedef struct n2n_edge_callbacks {
    * returned to drop the packet. The packet payload can be modified. */
   n2n_verdict (*packet_from_tap)(n2n_edge_t *eee, uint8_t *payload, uint16_t payload_size);
 
+  /* Called whenever the IP address of the TAP interface changes. */
   void (*ip_address_changed)(n2n_edge_t *eee, uint32_t old_ip, uint32_t new_ip);
 } n2n_edge_callbacks_t;
 
@@ -386,6 +387,8 @@ void edge_set_userdata(n2n_edge_t *eee, void *user_data);
 void* edge_get_userdata(n2n_edge_t *eee);
 void edge_send_packet2net(n2n_edge_t *eee, uint8_t *tap_pkt, size_t len);
 void edge_read_from_tap(n2n_edge_t *eee);
+int edge_get_n2n_socket(n2n_edge_t *eee);
+int edge_get_management_socket(n2n_edge_t *eee);
 int run_edge_loop(n2n_edge_t *eee, int *keep_running);
 int quick_edge_init(char *device_name, char *community_name,
 		    char *encrypt_key, char *device_mac,
diff --git a/src/edge_utils.c b/src/edge_utils.c
index 6158165..67d8bf3 100644
--- a/src/edge_utils.c
+++ b/src/edge_utils.c
@@ -132,6 +132,18 @@ void* edge_get_userdata(n2n_edge_t *eee) {
 
 /* ************************************** */
 
+int edge_get_n2n_socket(n2n_edge_t *eee) {
+  return(eee->udp_sock);
+}
+
+/* ************************************** */
+
+int edge_get_management_socket(n2n_edge_t *eee) {
+  return(eee->udp_mgmt_sock);
+}
+
+/* ************************************** */
+
 const char* transop_str(enum n2n_transform tr) {
   switch(tr) {
   case N2N_TRANSFORM_ID_NULL:    return("null");
diff --git a/src/n2n.c b/src/n2n.c
index 8e574a7..fe8d39a 100644
--- a/src/n2n.c
+++ b/src/n2n.c
@@ -22,10 +22,6 @@
 
 #include <assert.h>
 
-#ifdef __ANDROID_NDK__
-#include <edge_jni/edge_jni.h>
-#endif
-
 #define PURGE_REGISTRATION_FREQUENCY   30
 #define REGISTRATION_TIMEOUT           60
 
@@ -35,47 +31,6 @@ static const uint8_t ipv6_multicast_addr[6] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x
 
 /* ************************************** */
 
-#ifdef __ANDROID_NDK__
-
-static int protect_socket(int sock) {
-  JNIEnv *env = NULL;
-
-  if(!g_status)
-    return(-1);
-
-  if ((*g_status->jvm)->GetEnv(g_status->jvm, &env, JNI_VERSION_1_1) != JNI_OK || !env) {
-    traceEvent(TRACE_ERROR, "GetEnv failed");
-    return(-1);
-  }
-
-  jclass vpn_service_cls = (*env)->GetObjectClass(env, g_status->jobj_service);
-
-  if(!vpn_service_cls) {
-    traceEvent(TRACE_ERROR, "GetObjectClass(VpnService) failed");
-    return(-1);
-  }
-
-  /* Call VpnService protect */
-  jmethodID midProtect = (*env)->GetMethodID(env, vpn_service_cls, "protect", "(I)Z");
-  if(!midProtect) {
-    traceEvent(TRACE_ERROR, "Could not resolve VpnService::protect");
-    return(-1);
-  }
-
-  jboolean isProtected = (*env)->CallBooleanMethod(env, g_status->jobj_service, midProtect, sock);
-
-  if(!isProtected) {
-    traceEvent(TRACE_ERROR, "VpnService::protect failed");
-    return(-1);
-  }
-
-  return(0);
-}
-
-#endif
-
-/* ************************************** */
-
 SOCKET open_socket(int local_port, int bind_any) {
   SOCKET sock_fd;
   struct sockaddr_in local_address;
@@ -104,11 +59,6 @@ SOCKET open_socket(int local_port, int bind_any) {
     return(-1);
   }
 
-#ifdef __ANDROID_NDK__
-  /* Protect the socket so that the supernode traffic won't go inside the n2n VPN */
-  protect_socket(sock_fd);
-#endif
-
   return(sock_fd);
 }