[Openvpn-devel] [PATCH] openvpnserv: clarify return values type

[Lev Stipakov]

From: Lev Stipakov <l...@openvpn.net>

Functions openvpn_vsntprintf and openvpn_sntprintf return
values of type int, but in reality it is always 0 or 1, which is
essentially bool.

To make code more clear, change return type to bool. Also
use stdbool.h header instead of bool definition macros.

Signed-off-by: Lev Stipakov <l...@openvpn.net>
---
 src/openvpnserv/automatic.c |  5 -----
 src/openvpnserv/common.c    | 13 +++++++------
 src/openvpnserv/service.h   |  5 +++--
 3 files changed, 10 insertions(+), 13 deletions(-)

diff --git a/src/openvpnserv/automatic.c b/src/openvpnserv/automatic.c
index 1f98283..c2982c1 100644
--- a/src/openvpnserv/automatic.c
+++ b/src/openvpnserv/automatic.c
@@ -38,11 +38,6 @@
 #include <stdarg.h>
 #include <process.h>
 
-/* bool definitions */
-#define bool int
-#define true 1
-#define false 0
-
 static SERVICE_STATUS_HANDLE service;
 static SERVICE_STATUS status = { .dwServiceType = SERVICE_WIN32_SHARE_PROCESS 
};
 
diff --git a/src/openvpnserv/common.c b/src/openvpnserv/common.c
index dc47666..69dd44b 100644
--- a/src/openvpnserv/common.c
+++ b/src/openvpnserv/common.c
@@ -31,7 +31,7 @@ LPCTSTR service_instance = TEXT("");
  * These are necessary due to certain buggy implementations of (v)snprintf,
  * that don't guarantee null termination for size > 0.
  */
-int
+bool
 openvpn_vsntprintf(LPTSTR str, size_t size, LPCTSTR format, va_list arglist)
 {
     int len = -1;
@@ -42,18 +42,19 @@ openvpn_vsntprintf(LPTSTR str, size_t size, LPCTSTR format, 
va_list arglist)
     }
     return (len >= 0 && len < size);
 }
-int
+
+bool
 openvpn_sntprintf(LPTSTR str, size_t size, LPCTSTR format, ...)
 {
     va_list arglist;
-    int len = -1;
+    bool res = false;
     if (size > 0)
     {
         va_start(arglist, format);
-        len = openvpn_vsntprintf(str, size, format, arglist);
+        res = openvpn_vsntprintf(str, size, format, arglist);
         va_end(arglist);
     }
-    return len;
+    return res;
 }
 
 static DWORD
@@ -65,7 +66,7 @@ GetRegString(HKEY key, LPCTSTR value, LPTSTR data, DWORD 
size, LPCTSTR default_v
     if (status == ERROR_FILE_NOT_FOUND && default_value)
     {
         size_t len = size/sizeof(data[0]);
-        if (openvpn_sntprintf(data, len, default_value) > 0)
+        if (openvpn_sntprintf(data, len, default_value))
         {
             status = ERROR_SUCCESS;
         }
diff --git a/src/openvpnserv/service.h b/src/openvpnserv/service.h
index 4d03b88..eaa479a 100644
--- a/src/openvpnserv/service.h
+++ b/src/openvpnserv/service.h
@@ -32,6 +32,7 @@
 
 #include <winsock2.h>
 #include <windows.h>
+#include <stdbool.h>
 #include <stdlib.h>
 #include <tchar.h>
 
@@ -82,9 +83,9 @@ VOID WINAPI ServiceStartAutomatic(DWORD argc, LPTSTR *argv);
 VOID WINAPI ServiceStartInteractiveOwn(DWORD argc, LPTSTR *argv);
 VOID WINAPI ServiceStartInteractive(DWORD argc, LPTSTR *argv);
 
-int openvpn_vsntprintf(LPTSTR str, size_t size, LPCTSTR format, va_list 
arglist);
+bool openvpn_vsntprintf(LPTSTR str, size_t size, LPCTSTR format, va_list 
arglist);
 
-int openvpn_sntprintf(LPTSTR str, size_t size, LPCTSTR format, ...);
+bool openvpn_sntprintf(LPTSTR str, size_t size, LPCTSTR format, ...);
 
 DWORD GetOpenvpnSettings(settings_t *s);
 
-- 
2.7.4



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