implement Get{Db,Log,Pid}{,W} function

DbDir  : directory to store files such as vpn_server.config and backups etc
LogDir : directory to write logs (sub directories is created in this dir)
PidDir : directory to put PID files such as .ctl-* .pid-* .VPN-*

src/Mayaqua/FileIO.c

@@ -1295,6 +1295,60 @@ void GetExeNameW(wchar_t *name, UINT size)
 	UniStrCpy(name, size, exe_file_name_w);
 }
 
+void GetLogDir(char *name, UINT size)
+{
+#ifdef SE_LOGDIR
+	Format(name, size, SE_LOGDIR);
+#else
+	GetExeDir(name, size);
+#endif
+}
+
+void GetLogDirW(wchar_t *name, UINT size)
+{
+#ifdef SE_LOGDIR
+	UniFormat(name, size, L""SE_LOGDIR);
+#else
+	GetExeDirW(name, size);
+#endif
+}
+
+void GetDbDir(char *name, UINT size)
+{
+#ifdef SE_DBDIR
+	Format(name, size, SE_DBDIR);
+#else
+	GetExeDir(name, size);
+#endif
+}
+
+void GetDbDirW(wchar_t *name, UINT size)
+{
+#ifdef SE_DBDIR
+	UniFormat(name, size, L""SE_DBDIR);
+#else
+	GetExeDirW(name, size);
+#endif
+}
+
+void GetPidDir(char *name, UINT size)
+{
+#ifdef SE_PIDDIR
+	Format(name, size, SE_PIDDIR);
+#else
+	GetExeDir(name, size);
+#endif
+}
+
+void GetPidDirW(wchar_t *name, UINT size)
+{
+#ifdef SE_PIDDIR
+	UniFormat(name, size, L""SE_PIDDIR);
+#else
+	GetExeDirW(name, size);
+#endif
+}
+
 // Initialization of the acquisition of the EXE file name
 void InitGetExeName(char *arg)
 {

src/Mayaqua/FileIO.h

@@ -228,6 +228,12 @@ void GetExeName(char *name, UINT size);
 void GetExeNameW(wchar_t *name, UINT size);
 void GetExeDir(char *name, UINT size);
 void GetExeDirW(wchar_t *name, UINT size);
+void GetLogDir(char *name, UINT size);
+void GetLogDirW(wchar_t *name, UINT size);
+void GetDbDir(char *name, UINT size);
+void GetDbDirW(wchar_t *name, UINT size);
+void GetPidDir(char *name, UINT size);
+void GetPidDirW(wchar_t *name, UINT size);
 void BuildHamcore(char *dst_filename, char *src_dir, bool unix_only);
 int CompareHamcore(void *p1, void *p2);
 void InitHamcore();