fix lanzou

app/src/main/java/xyz/fycz/myreader/webapi/LanZouApi.kt

@@ -97,9 +97,17 @@ object LanZouApi {
     ): Coroutine<List<LanZouFile>?> {
         return Coroutine.async {
             val params = if (page == 1) {
-                getFoldParams(getProxyClient().newCallResponseBody { url(foldUrl) }.text(), page, pwd)
+                getFoldParams(
+                    getProxyClient().newCallResponseBody { url(foldUrl) }.text(),
+                    page,
+                    pwd
+                )
             } else {
-                paramCathe[foldUrl] ?: getFoldParams(getProxyClient().newCallResponseBody { url(foldUrl) }.text(), page, pwd)
+                paramCathe[foldUrl] ?: getFoldParams(getProxyClient().newCallResponseBody {
+                    url(
+                        foldUrl
+                    )
+                }.text(), page, pwd)
             }
             params["pg"] = page
             paramCathe[foldUrl] = params
@@ -160,11 +168,15 @@ object LanZouApi {
      */
     fun getFileUrl(url: String, password: String = ""): Observable<String> {
         return Observable.create {
-            val html = OkHttpUtils.getHtml(url)
+            var html = OkHttpUtils.getHtml(url)
             val url2 = if (password.isEmpty()) {
                 val url1 = getUrl1(html)
-                val data = StringUtils.getSubString(OkHttpUtils.getHtml(url1), "},", "},")
+                html = OkHttpUtils.getHtml(url1)
-                val key = getKeyValueByKey(data, "sign") + "&" + getKeyValueByKey(data, "websignkey")
+                val data = getDataString(html)
+                Log.d("LanZouUtils", "data:$data")
+                val key = getKeyValueByKey(html, data, "sign") +
+                        "&" + getKeyValueByKey(html, data, "websignkey")
+                Log.d("LanZouUtils", "key:$key")
                 getUrl2(key, url1)
             } else {
                 getUrl2(StringHelper.getSubString(html, "sign=", "&"), url, password)
@@ -178,13 +190,19 @@ object LanZouApi {
         }
     }
 
+    fun getDataString(html: String): String {
+        val start = html.lastIndexOf("data :") + "data :".length
+        val end = html.indexOf("},", start) + 1
+        return html.substring(start, end)
+    }
+
     fun getUrl1(html: String): String {
         val doc = Jsoup.parse(html)
         return URLCONST.LAN_ZOU_URL + doc.getElementsByTag("iframe").attr("src")
     }
 
-    fun getKeyValueByKey(html: String, key: String): String {
+    fun getKeyValueByKey(html: String, data: String, key: String): String {
-        val keyName = StringHelper.getSubString(html, "'$key':", ",")
+        val keyName = StringHelper.getSubString(data, "'$key':", ",")
         return if (keyName.endsWith("'")) {
             key + "=" + keyName.replace("'", "")
         } else {