msvcrt: Implemented splitpath_s.

dlls/msvcrt/dir.c

@@ -735,6 +735,84 @@ void CDECL _wsplitpath(const MSVCRT_wchar_t *inpath, MSVCRT_wchar_t *drv, MSVCRT
     if (ext) strcpyW( ext, end );
 }
 
+/******************************************************************
+ *		_wsplitpath_s (MSVCRT.@)
+ *
+ * Secure version of _wsplitpath
+ */
+int _wsplitpath_s(const MSVCRT_wchar_t* inpath,
+                  MSVCRT_wchar_t* drive, MSVCRT_size_t sz_drive,
+                  MSVCRT_wchar_t* dir, MSVCRT_size_t sz_dir,
+                  MSVCRT_wchar_t* fname, MSVCRT_size_t sz_fname,
+                  MSVCRT_wchar_t* ext, MSVCRT_size_t sz_ext)
+{
+    const MSVCRT_wchar_t *p, *end;
+
+    if (!inpath) return MSVCRT_EINVAL;
+    if (!drive && sz_drive) return MSVCRT_EINVAL;
+    if (drive && !sz_drive) return MSVCRT_EINVAL;
+    if (!dir && sz_dir) return MSVCRT_EINVAL;
+    if (dir && !sz_dir) return MSVCRT_EINVAL;
+    if (!fname && sz_fname) return MSVCRT_EINVAL;
+    if (fname && !sz_fname) return MSVCRT_EINVAL;
+    if (!ext && sz_ext) return MSVCRT_EINVAL;
+    if (ext && !sz_ext) return MSVCRT_EINVAL;
+
+    if (inpath[0] && inpath[1] == ':')
+    {
+        if (drive)
+        {
+            if (sz_drive <= 2) goto do_error;
+            drive[0] = inpath[0];
+            drive[1] = inpath[1];
+            drive[2] = 0;
+        }
+        inpath += 2;
+    }
+    else if (drive) drive[0] = '\0';
+
+    /* look for end of directory part */
+    end = NULL;
+    for (p = inpath; *p; p++) if (*p == '/' || *p == '\\') end = p + 1;
+
+    if (end)  /* got a directory */
+    {
+        if (dir)
+        {
+            if (sz_dir <= end - inpath) goto do_error;
+            memcpy( dir, inpath, (end - inpath) * sizeof(MSVCRT_wchar_t) );
+            dir[end - inpath] = 0;
+        }
+        inpath = end;
+    }
+    else if (dir) dir[0] = 0;
+
+    /* look for extension: what's after the last dot */
+    end = NULL;
+    for (p = inpath; *p; p++) if (*p == '.') end = p;
+
+    if (!end) end = p; /* there's no extension */
+
+    if (fname)
+    {
+        if (sz_fname <= end - inpath) goto do_error;
+        memcpy( fname, inpath, (end - inpath) * sizeof(MSVCRT_wchar_t) );
+        fname[end - inpath] = 0;
+    }
+    if (ext)
+    {
+        if (sz_ext <= strlenW(end)) goto do_error;
+        strcpyW( ext, end );
+    }
+    return 0;
+do_error:
+    if (drive)  drive[0] = '\0';
+    if (dir)    dir[0] = '\0';
+    if (fname)  fname[0]= '\0';
+    if (ext)    ext[0]= '\0';
+    return MSVCRT_ERANGE;
+}
+
 /*********************************************************************
  *		_wfullpath (MSVCRT.@)
  *

dlls/msvcrt/msvcrt.h

@@ -403,6 +403,11 @@ struct MSVCRT__stat64 {
 #define MSVCRT__IOLBF    0x0040
 
 #define MSVCRT_FILENAME_MAX 260
+#define MSVCRT_DRIVE_MAX    3
+#define MSVCRT_FNAME_MAX    256
+#define MSVCRT_DIR_MAX      256
+#define MSVCRT_EXT_MAX      256
+#define MSVCRT_PATH_MAX     260
 #define MSVCRT_stdin       (MSVCRT__iob+MSVCRT_STDIN_FILENO)
 #define MSVCRT_stdout      (MSVCRT__iob+MSVCRT_STDOUT_FILENO)
 #define MSVCRT_stderr      (MSVCRT__iob+MSVCRT_STDERR_FILENO)

dlls/msvcrt/msvcrt.spec

@@ -571,6 +571,7 @@
 @ cdecl _wspawnvp(long wstr ptr)
 @ cdecl _wspawnvpe(long wstr ptr ptr)
 @ cdecl _wsplitpath(wstr wstr wstr wstr wstr)
+@ cdecl _wsplitpath_s(wstr ptr long ptr long ptr long ptr long) _wsplitpath_s
 @ cdecl _wstat(wstr ptr) MSVCRT__wstat
 @ cdecl _wstati64(wstr ptr) MSVCRT__wstati64
 @ cdecl _wstat64(wstr ptr) MSVCRT__wstat64