optimize: add compatibility for freenginx.

Commit freenginx/nginx@3329aa9 updated the ngx_http_request_t
structure with the start_time; the start_sec and start_msec
were removed.

Also, some additional SSL-related functionality has been added
to the the nginx, however, a corresponding one for the freenginx
is missing.

Author: osokin

src/ngx_stream_lua_module.c

@@ -919,7 +919,7 @@ ngx_stream_lua_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
     ngx_stream_lua_srv_conf_t       *conf = child;
 
 #if (NGX_STREAM_SSL)
-#if defined(nginx_version) && nginx_version >= 1025005
+#if !defined (freenginx) && (defined(nginx_version) && nginx_version >= 1025005)
     ngx_stream_ssl_srv_conf_t       *sscf;
 #else
     ngx_stream_ssl_conf_t           *sscf;

src/ngx_stream_lua_socket_tcp.c

@@ -2261,7 +2261,9 @@ ngx_stream_lua_socket_tcp_serversslhandshake(lua_State *L)
     ngx_stream_lua_ctx_t                        *ctx;
     ngx_stream_lua_co_ctx_t                     *coctx;
     ngx_stream_lua_socket_tcp_upstream_t        *u;
+#if !defined (freenginx)
     ngx_stream_ssl_srv_conf_t                   *sscf;
+#endif
 
     /* Lua function arguments: self */
 
@@ -2317,6 +2319,7 @@ ngx_stream_lua_socket_tcp_serversslhandshake(lua_State *L)
         return 1;
     }
 
+#if !defined (freenginx)
     sscf = ngx_stream_get_module_srv_conf(r->session, ngx_stream_ssl_module);
 
     if (sscf == NULL || sscf->ssl.ctx == NULL) {
@@ -2330,6 +2333,7 @@ ngx_stream_lua_socket_tcp_serversslhandshake(lua_State *L)
         lua_pushliteral(L, "failed to create ssl connection");
         return 2;
     }
+#endif
 
     ctx = ngx_stream_lua_get_module_ctx(r, ngx_stream_lua_module);
     if (ctx == NULL) {

src/ngx_stream_lua_ssl_certby.c

@@ -1560,7 +1560,7 @@ ngx_stream_lua_ffi_ssl_verify_client(ngx_stream_lua_request_t *r,
 
     ngx_stream_lua_ctx_t        *ctx;
     ngx_ssl_conn_t              *ssl_conn;
-#if defined(nginx_version) && nginx_version >= 1025005
+#if !defined (freenginx) && (defined(nginx_version) && nginx_version >= 1025005)
     ngx_stream_ssl_srv_conf_t   *sscf;
 #else
     ngx_stream_ssl_conf_t       *sscf;

src/ngx_stream_lua_ssl_client_helloby.c

@@ -218,7 +218,7 @@ ngx_stream_lua_ssl_client_hello_handler(ngx_ssl_conn_t *ssl_conn,
         return -1;
     }
 
-#if (nginx_version > 1029001)
+#if !(freenginx) && (nginx_version > 1029001)
 #ifdef SSL_CLIENT_HELLO_SUCCESS
     /* see commit 0373fe5d98c1515640 for more details */
     rc = ngx_ssl_client_hello_callback(ssl_conn, al, arg);

src/ngx_stream_lua_time.c

@@ -36,7 +36,21 @@ ngx_stream_lua_ffi_now(void)
 double
 ngx_stream_lua_ffi_req_start_time(ngx_stream_lua_request_t *r)
 {
+#if defined freenginx
+    ngx_time_t              *tp;
+
+    tp = ngx_timeofday();
+    tp->sec -= (ngx_current_msec - r->session->start_time) / 1000;
+    tp->msec -= (ngx_current_msec - r->session->start_time) % 1000;
+    if (tp->msec > NGX_MAX_INT_T_VALUE) {
+        tp->msec += 1000;
+        tp->sec -= 1;
+    }
+
+    return tp->sec + tp->msec / 1000.0;
+#else
     return r->session->start_sec + r->session->start_msec / 1000.0;
+#endif
 }