From c0cdf332349733f914726ea449d48998e92209fa Mon Sep 17 00:00:00 2001
From: Edouard Tisserant <edouard@pep-project.org>
Date: Mon, 28 Nov 2016 17:54:25 +0100
Subject: [PATCH] ENGINE-133 timeout in retrieve_next_sync_msg - half baked,
 not wrapped

---
 src/sync_mixin.cc | 35 ++++++++++++++++++++++++++++++++---
 src/sync_mixin.hh | 13 ++++++++++++-
 2 files changed, 44 insertions(+), 4 deletions(-)

diff --git a/src/sync_mixin.cc b/src/sync_mixin.cc
index 80af846..6ee297d 100644
--- a/src/sync_mixin.cc
+++ b/src/sync_mixin.cc
@@ -61,34 +61,58 @@ namespace pEp {
 #ifndef NDEBUG
         void SyncMixIn::_inject(int event, Identity partner, object extra)
         {
+            time_t timeout = 0;
             PEP_STATUS status = fsm_DeviceState_inject(session,
-                    (DeviceState_event) event, partner, NULL);
+                    (DeviceState_event) event, partner, NULL, &timeout);
             _throw_status(status);
         }
 #endif
 
         jmp_buf SyncMixIn::env;
+        jmp_buf SyncMixIn::env_timeout;
         void *SyncMixIn::_msg;
 
         int SyncMixIn::inject_sync_msg(void *msg, void *management)
         {
             _msg = msg;
             int val = setjmp(env);
-            if (!val)
+            if (!val){
+                // call python timeout timer cancel
+                auto that = dynamic_cast< SyncMixIn_callback * >(
+                        static_cast< SyncMixIn * > (management));
+                that->cancelTimeout();
                 do_sync_protocol(session, management);
+            }
             return 0;
         }
 
-        void *SyncMixIn::retrieve_next_sync_msg(void *management)
+        void *SyncMixIn::retrieve_next_sync_msg(void *management, time_t *timeout)
         {
             static int twice = 1;
             twice = !twice;
             if (!twice)
                 return (void *) _msg;
+            if (*timeout != 0){
+                int val = setjmp(env_timeout);
+                if (!val){
+                    // call python timeout timer start
+                    auto that = dynamic_cast< SyncMixIn_callback * >(
+                            static_cast< SyncMixIn * > (management));
+                    that->setTimeout(*timeout);
+                }else{
+                    // this will inject tiemout event
+                    return NULL;
+                }
+            }
             longjmp(env, 1);
             return (void *) 23;
         }
 
+        // to be called from python timeout timer - may GIL protect us
+        void SyncMixIn::onTimeout(){
+            longjmp(env_timeout, 1);
+        }
+
         void SyncMixIn_callback::messageToSend(Message msg)
         {
             call_method< void >(_self, "messageToSend", msg);
@@ -98,6 +122,11 @@ namespace pEp {
         {
             call_method< void >(_self, "showHandshake", me, partner);
         }
+
+        void SyncMixIn_callback::setTimeout(time_t timeout)
+        {
+            call_method< void >(_self, "SetTimeout", timeout);
+        }
     }
 }
 
diff --git a/src/sync_mixin.hh b/src/sync_mixin.hh
index 0a38d4e..0436cb0 100644
--- a/src/sync_mixin.hh
+++ b/src/sync_mixin.hh
@@ -22,6 +22,15 @@ namespace pEp {
 #ifndef NDEBUG
                 virtual void _inject(int event, Identity partner, object extra);
 #endif
+                virtual void setTimeout(time_t timeout){
+                    throw runtime_error("override this method");
+                }
+
+                virtual void cancelTimeout(){
+                    throw runtime_error("override this method");
+                }
+
+                virtual void onTimeout();
 
             protected:
                 static PEP_STATUS _messageToSend(void *obj, message *msg);
@@ -29,9 +38,10 @@ namespace pEp {
                         pEp_identity *me, pEp_identity *partner);
 
                 static jmp_buf env;
+                static jmp_buf env_timeout;
                 static void *_msg;
                 static int inject_sync_msg(void *msg, void *management);
-                static void *retrieve_next_sync_msg(void *management);
+                static void *retrieve_next_sync_msg(void *management, time_t *timeout);
         };
 
         class SyncMixIn_callback : public SyncMixIn {
@@ -43,6 +53,7 @@ namespace pEp {
 
                 void messageToSend(Message msg);
                 void showHandshake(Identity me, Identity partner);
+                void setTimeout(time_t timeout);
         };
     }
 }