From 740eec68f5e2cc4ef64c857252ba1fb08c3ec48e Mon Sep 17 00:00:00 2001
From: Johannes Millan <johannes.millan@gmail.com>
Date: Mon, 2 Feb 2026 13:34:50 +0100
Subject: [PATCH] fix(sync): add explicit error handling for UTF-8 decoding in
 iOS WebDAV plugin

Reject with DECODE_ERROR instead of silently returning empty string
when UTF-8 decoding fails on non-empty response data, preventing
the sync layer from misinterpreting decode failures as empty files.
---
 ios/App/App/WebDavHttpPlugin.swift | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/ios/App/App/WebDavHttpPlugin.swift b/ios/App/App/WebDavHttpPlugin.swift
index 9259688f01..19e7fbb213 100644
--- a/ios/App/App/WebDavHttpPlugin.swift
+++ b/ios/App/App/WebDavHttpPlugin.swift
@@ -79,8 +79,12 @@ public class WebDavHttpPlugin: CAPPlugin, CAPBridgedPlugin {
             }
 
             let bodyString: String
-            if let responseData = responseData {
-                bodyString = String(data: responseData, encoding: .utf8) ?? ""
+            if let responseData = responseData, !responseData.isEmpty {
+                guard let decoded = String(data: responseData, encoding: .utf8) else {
+                    call.reject("Failed to decode response as UTF-8 (\(responseData.count) bytes)", "DECODE_ERROR")
+                    return
+                }
+                bodyString = decoded
             } else {
                 bodyString = ""
             }