[PATCH 1/1] appwiz.cpl: Account for unicode characters in XDG_CACHE_HOME.

[Esme Povirk]

From: Esme Povirk

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=57338
---
 dlls/appwiz.cpl/addons.c | 22 ++++++++++++++++++----
 1 file changed, 18 insertions(+), 4 deletions(-)

diff --git a/dlls/appwiz.cpl/addons.c b/dlls/appwiz.cpl/addons.c
index 7b2c43472ff..fdf2b1c917e 100644
--- a/dlls/appwiz.cpl/addons.c
+++ b/dlls/appwiz.cpl/addons.c
@@ -317,15 +317,29 @@ static enum install_res install_from_default_dir(void)

static WCHAR *get_cache_file_name(BOOL ensure_exists)
 {
-    const char *xdg_dir;
+    const WCHAR *xdg_dir;
     const WCHAR *home_dir;
-    WCHAR *cache_dir, *ret;
+    WCHAR *cache_dir=NULL, *ret;
     size_t len, size;

-    xdg_dir = getenv( "XDG_CACHE_HOME" );
+    xdg_dir = _wgetenv( L"XDG_CACHE_HOME" );
     if (xdg_dir && *xdg_dir && p_wine_get_dos_file_name)
     {
-        if (!(cache_dir = p_wine_get_dos_file_name( xdg_dir ))) return NULL;
+        char *xdg_dir_mb;
+        int xdg_dir_len;
+
+        xdg_dir_len = WideCharToMultiByte( CP_UNIXCP, 0, xdg_dir, -1, NULL, 0, NULL, NULL );
+        xdg_dir_mb = malloc(xdg_dir_len);
+        if (xdg_dir_mb)
+        {
+            WideCharToMultiByte( CP_UNIXCP, 0, xdg_dir, -1, xdg_dir_mb, xdg_dir_len, NULL, NULL );
+
+            cache_dir = p_wine_get_dos_file_name( xdg_dir_mb );
+
+            free(xdg_dir_mb);
+        }
+
+        if (!cache_dir) return NULL;
     }
     else if ((home_dir = _wgetenv( L"WINEHOMEDIR" )))
     {