From 20c8675ba46bda97330a4117c459a59a9f1c465e Mon Sep 17 00:00:00 2001
From: Alberto Gonzalez Iniesta <agi@inittab.org>
Date: Mon, 21 Nov 2016 09:37:33 +0100
Subject: New upstream version 2.4~beta1

---
 src/openvpn/multi.h | 65 +++++++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 56 insertions(+), 9 deletions(-)

(limited to 'src/openvpn/multi.h')

diff --git a/src/openvpn/multi.h b/src/openvpn/multi.h
index 2bc0c8a..0d369f3 100644
--- a/src/openvpn/multi.h
+++ b/src/openvpn/multi.h
@@ -42,6 +42,8 @@
 #include "mtcp.h"
 #include "perf.h"
 
+#define MULTI_PREFIX_MAX_LENGTH 256
+
 /*
  * Walk (don't run) through the routing table,
  * deleting old entries, and possibly multi_instance
@@ -55,6 +57,13 @@ struct multi_reap
 };
 
 
+struct deferred_signal_schedule_entry
+{
+  struct schedule_entry se;
+  int signal_received;
+  struct timeval wakeup;
+};
+
 /**
  * Server-mode state structure for one single VPN tunnel.
  *
@@ -80,7 +89,7 @@ struct multi_instance {
   struct mroute_addr real;      /**< External network address of the
                                  *   remote peer. */
   ifconfig_pool_handle vaddr_handle;
-  const char *msg_prefix;
+  char msg_prefix[MULTI_PREFIX_MAX_LENGTH];
 
   /* queued outgoing data in Server/TCP mode */
   unsigned int tcp_rwflags;
@@ -88,6 +97,7 @@ struct multi_instance {
   bool socket_set_called;
 
   in_addr_t reporting_addr;       /* IP address shown in status listing */
+  struct in6_addr reporting_addr_ipv6;  /* IPv6 address in status listing */
 
   bool did_open_context;
   bool did_real_hash;
@@ -102,6 +112,10 @@ struct multi_instance {
 
   struct context context;       /**< The context structure storing state
                                  *   for this VPN tunnel. */
+
+#ifdef ENABLE_ASYNC_PUSH
+  int inotify_watch; /* watch descriptor for acf */
+#endif
 };
 
 
@@ -124,6 +138,9 @@ struct multi_context {
 # define MC_WORK_THREAD                (MC_MULTI_THREADED_WORKER|MC_MULTI_THREADED_SCHEDULER)
   int thread_mode;
 
+  struct multi_instance** instances;    /**< Array of multi_instances. An instance can be
+                                         * accessed using peer-id as an index. */
+
   struct hash *hash;            /**< VPN tunnel instances indexed by real
                                  *   address of the remote peer. */
   struct hash *vhash;           /**< VPN tunnel instances indexed by
@@ -166,6 +183,13 @@ struct multi_context {
    * Timer object for stale route check
    */
   struct event_timeout stale_routes_check_et;
+
+#ifdef ENABLE_ASYNC_PUSH
+  /* mapping between inotify watch descriptors and multi_instances */
+  struct hash *inotify_watchers;
+#endif
+
+  struct deferred_signal_schedule_entry deferred_shutdown_signal;
 };
 
 /*
@@ -209,7 +233,7 @@ const char *multi_instance_string (const struct multi_instance *mi, bool null, s
 void multi_init (struct multi_context *m, struct context *t, bool tcp_mode, int thread_mode);
 void multi_uninit (struct multi_context *m);
 
-void multi_top_init (struct multi_context *m, const struct context *top, const bool alloc_buffers);
+void multi_top_init (struct multi_context *m, const struct context *top);
 void multi_top_free (struct multi_context *m);
 
 struct multi_instance *multi_create_instance (struct multi_context *m, const struct mroute_addr *real);
@@ -217,6 +241,16 @@ void multi_close_instance (struct multi_context *m, struct multi_instance *mi, b
 
 bool multi_process_timeout (struct multi_context *m, const unsigned int mpp_flags);
 
+/**
+ * Handles peer floating.
+ *
+ * If peer is floated to a taken address, either drops packet
+ * (if peer that owns address has different CN) or disconnects
+ * existing peer. Updates multi_instance with new address,
+ * updates hashtables in multi_context.
+ */
+void multi_process_float (struct multi_context* m, struct multi_instance* mi);
+
 #define MPP_PRE_SELECT             (1<<0)
 #define MPP_CONDITIONAL_PRE_SELECT (1<<1)
 #define MPP_CLOSE_ON_SIGNAL        (1<<2)
@@ -311,6 +345,18 @@ void multi_close_instance_on_signal (struct multi_context *m, struct multi_insta
 void init_management_callback_multi (struct multi_context *m);
 void uninit_management_callback_multi (struct multi_context *m);
 
+
+#ifdef ENABLE_ASYNC_PUSH
+/**
+ * Called when inotify event is fired, which happens when acf file is closed or deleted.
+ * Continues authentication and sends push_repl
+ *
+ * @param m multi_context
+ * @param mpp_flags
+ */
+void multi_process_file_closed (struct multi_context *m, const unsigned int mpp_flags);
+#endif
+
 /*
  * Return true if our output queue is not full
  */
@@ -417,6 +463,12 @@ multi_route_defined (const struct multi_context *m,
     return true;
 }
 
+/*
+ * Takes prefix away from multi_instance.
+ */
+void
+ungenerate_prefix (struct multi_instance *mi);
+
 /*
  * Set a msg() function prefix with our current client instance ID.
  */
@@ -425,10 +477,10 @@ static inline void
 set_prefix (struct multi_instance *mi)
 {
 #ifdef MULTI_DEBUG_EVENT_LOOP
-  if (mi->msg_prefix)
+  if (mi->msg_prefix[0])
     printf ("[%s]\n", mi->msg_prefix);
 #endif
-  msg_set_prefix (mi->msg_prefix);
+  msg_set_prefix (mi->msg_prefix[0] ? mi->msg_prefix : NULL);
 }
 
 static inline void
@@ -573,10 +625,5 @@ multi_set_pending (struct multi_context *m, struct multi_instance *mi)
   m->pending = mi;
 }
 
-static inline void
-multi_release_io_lock (struct multi_context *m)
-{
-}
-
 #endif /* P2MP_SERVER */
 #endif /* MULTI_H */
-- 
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