From 037532d73b9e2763b57fb5e079b09e8f4ef404f5 Mon Sep 17 00:00:00 2001
From: Klaas Freitag <freitag@owncloud.com>
Date: Wed, 20 Jun 2012 10:40:40 +0200
Subject: [PATCH] win32: Fix random file name generation, init random generator
 once.

---
 src/csync.c      | 3 +++
 src/std/c_path.c | 9 +++++++--
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/csync.c b/src/csync.c
index d6b4f84068..1c0bf09e76 100644
--- a/src/csync.c
+++ b/src/csync.c
@@ -351,6 +351,9 @@ retry_vio_init:
 
   ctx->status = CSYNC_STATUS_INIT;
 
+  /* initialize random generator */
+  srand(time(NULL));
+
   rc = 0;
 
 out:
diff --git a/src/std/c_path.c b/src/std/c_path.c
index 732a208501..b32838f0d4 100644
--- a/src/std/c_path.c
+++ b/src/std/c_path.c
@@ -132,10 +132,15 @@ int c_tmpname(char *template) {
     }
   }
 
-  srand(time(NULL));
-
   for (i = 0; i < 6; ++i) {
+#ifdef _WIN32
+    /* in win32 MAX_RAND is 32767, thus we can not shift that far,
+     * otherwise the last three chars are 0
+     */
+    int hexdigit = (rand() >> (i * 2)) & 0x1f;
+#else
     int hexdigit = (rand() >> (i * 5)) & 0x1f;
+#endif
     tmp[i] = hexdigit > 9 ? hexdigit + 'a' - 10 : hexdigit + '0';
   }