externals/vtun: Notify vtun status for usrsock daemon

Author: SPRESENSE

externals/vtun/Makefile

@@ -54,7 +54,7 @@ LEXFLAGS := -t
 YACC      := yacc
 YACCFLAGS := -d
 
-VTUN_SH1 := c519f003072029efab49fad75efd7e6c7ea28c16
+VTUN_SH1 := cbc46c9ad44e6c02196d5ea632fb41536331a200
 VTUN_DIR := VTun-$(VTUN_SH1)
 VTUN_URL := "https://codeload.github.com/SPRESENSE/VTun/zip/$(VTUN_SH1)"
 VTUN_DL_NAME := archive.zip

externals/vtun/compat_nuttx.c

@@ -42,6 +42,7 @@
 #include <mbedtls/ctr_drbg.h>
 #include <mbedtls/blowfish.h>
 #include <syslog.h>
+#include <sys/ioctl.h>
 #include <sys/uio.h>
 #include <time.h>
 #include <string.h>
@@ -54,12 +55,6 @@
 
 #include "compat_nuttx.h"
 
-/****************************************************************************
- * Private Data
- ****************************************************************************/
-
-static int session_established = 0;
-
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -86,10 +81,51 @@ int getpriority(int which, id_t who)
 
 int setpriority(int which, id_t who, int prio)
 {
-  session_established = (prio == LINKFD_PRIO) ? 1 : 0;
   return 0;
 }
 
+int update_vtun_state(int enable)
+{
+  static int sockfd     = -1;
+  int        ret        = 0;
+  uint8_t    sock_type  = 0;
+
+  if (sockfd < 0)
+    {
+      sockfd = socket(AF_INET, SOCK_STREAM, 0);
+    }
+
+  if (sockfd < 0)
+    {
+      return -1;
+    }
+
+  if (enable)
+    {
+      /* VTUN established */
+
+      sock_type = DENY_INET_SOCK_ENABLE;
+    }
+  else
+    {
+      /* VTUN abolished */
+
+      sock_type = DENY_INET_SOCK_DISABLE;
+    }
+
+  ret = ioctl(sockfd, SIOCDENYINETSOCK, (unsigned long) &sock_type);
+
+  if (!enable)
+    {
+      /* Close socket */
+
+      close(sockfd);
+      sockfd = -1;
+    }
+
+  return ret;
+}
+
 unsigned char *MD5(char *msg, size_t msg_len, char *out)
 {
   static mbedtls_md5_context ctx;
@@ -640,8 +676,3 @@ ssize_t vtun_udp_readv(int fd, const struct iovec *iov, int iovcnt)
   return recv_len;
 }
 
-int vtun_session_established(void)
-{
-  return session_established;
-}
-

externals/vtun/compat_nuttx.h

@@ -108,6 +108,8 @@ void closelog(void);
 int getpriority(int which, id_t who);
 int setpriority(int which, id_t who, int prio);
 
+int update_vtun_state(int enable);
+
 pid_t setsid(void);
 
 ssize_t vtun_udp_readv(int fd, const struct iovec *iov, int iovcnt);