From 676e8a2a58e5e685e473cc6276892896915541f4 Mon Sep 17 00:00:00 2001
From: 821938089 <821938089@qq.com>
Date: Tue, 12 Jul 2022 11:06:22 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../java/io/legado/app/lib/webdav/WebDav.kt   | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/app/src/main/java/io/legado/app/lib/webdav/WebDav.kt b/app/src/main/java/io/legado/app/lib/webdav/WebDav.kt
index d15eef51c..e63997283 100644
--- a/app/src/main/java/io/legado/app/lib/webdav/WebDav.kt
+++ b/app/src/main/java/io/legado/app/lib/webdav/WebDav.kt
@@ -46,6 +46,15 @@ open class WebDav(val path: String, val authorization: Authorization) {
                     %s
                 </a:prop>
             </a:propfind>"""
+
+        @Language("xml")
+        private const val EXISTS =
+            """<?xml version="1.0"?>
+            <propfind xmlns="DAV:">
+               <prop>
+                  <resourcetype />
+               </prop>
+            </propfind>"""
     }
 
     private val url: URL = URL(path)
@@ -189,14 +198,12 @@ open class WebDav(val path: String, val authorization: Authorization) {
      */
     suspend fun exists(): Boolean {
         val url = httpUrl ?: return false
-        //当使用自建的WebDav服务时，在末尾有否 ”/“ 会影响请求的成功与否
-        //使用坚果云的WebDav则不会，这里做一个简单的替换来解决这个问题
-        val testUrl = url.removeSuffix("/") + "/"
         return kotlin.runCatching {
             return webDavClient.newCallResponse {
-                url(testUrl)
-                head()
-                //某些自建的WebDav服务，请求数据时返回码不一定为 200，如 caddy 为207，所以改为在200-300区间
+                url(url)
+                addHeader("Depth", "0")
+                val requestBody = EXISTS.toRequestBody("application/xml".toMediaType())
+                method("PROPFIND", requestBody)
             }.isSuccessful
         }.getOrDefault(false)
     }