fix problem: ovpn-client/server could not write data to pipe

re6st/ovpn-client.c

@@ -2,7 +2,6 @@
 
 int main(int argc, char *argv[])
 {
-  char *p;
   int pd;
   char buf[512];
   int n;
@@ -22,8 +21,8 @@ int main(int argc, char *argv[])
     return 1;
   }
 
-  pd = strtol(argv[1], &p, 10);
-  if (! (*p == 0)) {
+  pd = open(argv[1], 1);
+  if (pd == -1) {
     fprintf(stderr, "invalid pipe %s\n", argv[1]);
     return 1;
   }

re6st/ovpn-server.c

@@ -14,7 +14,6 @@ if arg1 != 'None':
 */
 int main(int argc, char *argv[])
 {
-  char *p;
   int pd;
   char buf[512];
   int n;
@@ -67,8 +66,8 @@ int main(int argc, char *argv[])
   if (strcmp(argv[1], "None") == 0)
     return 0;
 
-  pd = strtol(argv[1], &p, 10);
-  if (! (*p == 0)) {
+  pd = open(argv[1], 1);
+  if (pd == -1) {
     fprintf(stderr, "invalid pipe %s\n", argv[1]);
     return 1;
   }

re6st/plib.py

@@ -31,7 +31,7 @@ def openvpn(iface, encrypt, *args, **kw):
 
 
 def server(iface, max_clients, dh_path, pipe_fd, port, proto, encrypt, *args, **kw):
-    client_script = '%s %s' % (ovpn_server, pipe_fd)
+    client_script = '%s /proc/%u/fd/%s' % (ovpn_server, os.getpid(), pipe_fd)
     if pipe_fd is not None:
         args = ('--client-disconnect', client_script) + args
     return openvpn(iface, encrypt,

re6st/tunnel.py

@@ -65,7 +65,7 @@ class Connection(object):
             '--resolv-retry', '0',
             '--connect-retry-max', '3', '--tls-exit',
             '--ping-exit', str(timeout),
-            '--route-up', '%s %u' % (plib.ovpn_client, write_pipe),
+            '--route-up', '%s /proc/%u/fd/%u' % (plib.ovpn_client, os.getpid(), write_pipe),
             *ovpn_args)
         _retry += 1
         self._retry = _retry < len(self.address_list) and (