Fix CSS key caching on Android

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

src/libdvdcss.c

@@ -215,6 +215,18 @@ static int set_cache_directory( dvdcss_t dvdcss )
             dvdcss->psz_cachefile[PATH_MAX - 1] = '\0';
             psz_cache = dvdcss->psz_cachefile;
         }
+#else
+#ifdef __ANDROID__
+        /* $HOME is not writable on __ANDROID__ so we have to create a custom
+         * directory in userland */
+        char *psz_home = "/sdcard/Android/data/org.videolan.dvdcss";
+
+        int i_ret = mkdir( psz_home, 0755 );
+        if( i_ret < 0 && errno != EEXIST )
+        {
+            print_error( dvdcss, "failed creating home directory" );
+            psz_home = NULL;
+        }
 #else
         char *psz_home = NULL;
 #ifdef HAVE_PWD_H
@@ -228,6 +240,8 @@ static int set_cache_directory( dvdcss_t dvdcss )
         }
 #endif /* HAVE_PWD_H */
 
+#endif /* __ANDROID__ */
+
         if( psz_home == NULL )
         {
             psz_home = getenv( "HOME" );