fix custom emoji & call recorder quality,add order feature for chat exports

native/rust/src/modules/custom_font_hook.rs

@@ -1,4 +1,4 @@
-use std::{ffi::CStr, fs};
+use std::{ffi::{CStr, CString}, fs};
 
 use nix::libc::{self, c_uint};
 
@@ -12,7 +12,18 @@ def_hook!(
             if pathname == "/system/fonts/NotoColorEmoji.ttf"  {
                 if let Some(font_path) = config::native_config().custom_emoji_font_path {
                     if fs::metadata(&font_path).is_ok() {
-                        return libc::openat(libc::AT_FDCWD, font_path.as_ptr() as *const u8, flags, mode);
+                        match CString::new(font_path.clone()) {
+                            Ok(c_font_path) => {
+                                let fd = libc::openat(libc::AT_FDCWD, c_font_path.as_ptr() as *const u8, flags, mode);
+                                if fd >= 0 {
+                                    return fd;
+                                }
+                                warn!("failed to open custom emoji font path (fd={}): {}", fd, font_path);
+                            }
+                            Err(_) => {
+                                warn!("custom emoji font path contains null byte, using fallback system font");
+                            }
+                        }
                     } else {
                         warn!("custom emoji font path does not exist: {}", font_path);
                     }
@@ -31,4 +42,4 @@ pub fn init() {
     }
 
     dobby_hook_sym!("libc.so", "open", open_hook);
-}
+}