From 2f58da2994b3e7dc206ccfc0af7a81c9bf63375b Mon Sep 17 00:00:00 2001
From: eugene <eugene.kobyakov@netfoundry.io>
Date: Tue, 28 Apr 2020 19:15:01 -0400
Subject: [PATCH] cziti log

---
 wintun-testing/cziti/sdk.c         | 22 ++++++++++++++++++++--
 wintun-testing/cziti/sdk.go        |  6 ++++++
 wintun-testing/cziti/sdk.h         |  2 ++
 wintun-testing/ziti-wintun/main.go |  6 ++++++
 4 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/wintun-testing/cziti/sdk.c b/wintun-testing/cziti/sdk.c
index 9af9d420..034ef907 100644
--- a/wintun-testing/cziti/sdk.c
+++ b/wintun-testing/cziti/sdk.c
@@ -7,15 +7,33 @@ void libuv_stopper(uv_async_t *a) {
      uv_stop(a->loop);
 }
 
+void setLogOut(intptr_t h) {
+    int fd = _open_osfhandle(h, _O_APPEND | _O_RDONLY);
+
+    if (fd == -1) {
+       fprintf(stderr, "failed to get fd from handle: %d\n", errno);
+       fflush(stderr);
+       return;
+    }
+
+    FILE *f = _fdopen(fd, "a+");
+    if (f == NULL) {
+        fprintf(stderr, "setLogOut: %d\n", errno);
+        fflush(stderr);
+        return;
+    }
+
+    ziti_set_log(f);
+}
+
 void libuv_init(libuv_ctx *lctx) {
+    init_debug();
     lctx->l = uv_default_loop();
     uv_async_init(lctx->l, &lctx->stopper, libuv_stopper);
 }
 
 void libuv_runner(void *arg) {
-    init_debug();
     ZITI_LOG(INFO, "starting event loop");
-    fflush(stdout);
     uv_loop_t *l = arg;
     uv_run(l, UV_RUN_DEFAULT);
 
diff --git a/wintun-testing/cziti/sdk.go b/wintun-testing/cziti/sdk.go
index 32af339c..e26359fb 100644
--- a/wintun-testing/cziti/sdk.go
+++ b/wintun-testing/cziti/sdk.go
@@ -12,6 +12,7 @@ import (
 	"encoding/json"
 	"errors"
 	"github.com/michaelquigley/pfxlog"
+	"os"
 	"unsafe"
 )
 
@@ -28,7 +29,12 @@ func init() {
 	C.libuv_init(_impl.libuvCtx)
 }
 
+func SetLog(f *os.File) {
+	C.setLogOut(C.intptr_t(f.Fd()))
+}
+
 func Start() {
+
 	v := C.NF_get_version()
 	log.Infof("starting ziti-sdk-c %s(%s)[%s]", C.GoString(v.version), C.GoString(v.revision), C.GoString(v.build_date))
 
diff --git a/wintun-testing/cziti/sdk.h b/wintun-testing/cziti/sdk.h
index 2ad8dc26..5073cd95 100644
--- a/wintun-testing/cziti/sdk.h
+++ b/wintun-testing/cziti/sdk.h
@@ -23,4 +23,6 @@ void libuv_runner(void *arg);
 void libuv_run(libuv_ctx *lctx);
 void libuv_stop(libuv_ctx *lctx);
 
+void setLogOut(intptr_t h);
+
 extern const char** all_configs;
\ No newline at end of file
diff --git a/wintun-testing/ziti-wintun/main.go b/wintun-testing/ziti-wintun/main.go
index 81031796..ecc43dea 100644
--- a/wintun-testing/ziti-wintun/main.go
+++ b/wintun-testing/ziti-wintun/main.go
@@ -96,6 +96,12 @@ func main() {
 	fmt.Println("running")
 	cziti.DnsInit(ipv4ip, 24)
 
+	logFile, err := os.OpenFile("cziti.log", os.O_RDWR | os.O_CREATE, 0644)
+	if err != nil {
+		panic(err)
+	}
+	cziti.SetLog(logFile)
+
 	cziti.Start()
 	_, err = cziti.HookupTun(tunDevice, dns)
 	if err != nil {