add a tool

app/src/main/java/xyz/fycz/myreader/ui/activity/AboutActivity.java

@@ -3,9 +3,12 @@ package xyz.fycz.myreader.ui.activity;
 import android.content.ClipData;
 import android.content.ClipboardManager;
 import android.content.Context;
+import android.content.DialogInterface;
 import android.content.Intent;
 import android.net.Uri;
+import android.view.View;
 
+import androidx.annotation.NonNull;
 import androidx.appcompat.widget.Toolbar;
 
 import org.jetbrains.annotations.NotNull;
@@ -33,6 +36,7 @@ import xyz.fycz.myreader.util.utils.FileUtils;
 import xyz.fycz.myreader.util.utils.ImageLoader;
 import xyz.fycz.myreader.util.utils.OkHttpUtils;
 import xyz.fycz.myreader.util.utils.RxUtils;
+import xyz.fycz.myreader.webapi.LanZouApi;
 
 /**
  * @author fengyue
@@ -59,6 +63,7 @@ public class AboutActivity extends BaseActivity {
     protected void initWidget() {
         super.initWidget();
         binding.il.tvVersionName.setText(String.format("风月读书v%s", App.getStrVersionName()));
+        binding.il.rlLanZou.setVisibility(App.isDebug() ? View.VISIBLE : View.GONE);
     }
 
     @Override
@@ -110,6 +115,37 @@ public class AboutActivity extends BaseActivity {
                 .showFullWebViewDia(this, "file:///android_asset/PrivacyPolicy.html",
                         false, null));
         binding.il.rlDisclaimer.setOnClickListener(v -> DialogCreator.createAssetTipDialog(this, "免责声明", "disclaimer.fy"));
+        binding.il.rlLanZou.setOnClickListener(v -> {
+            String[] str = new String[1];
+            MyAlertDialog.createInputDia(this, getString(R.string.lan_zou_parse),
+                    "格式：链接+逗号+密码(没有密码就不用填)", "", true,
+                    100, text -> str[0] = text, (dialog, which) -> {
+                        String url, pwd = "";
+                        if (str[0].contains(",") || str[0].contains("，")) {
+                            String[] strs = str[0].split("[,，]");
+                            url = strs[0];
+                            pwd = strs[1];
+                        } else {
+                            url = str[0];
+                        }
+                        LanZouApi.INSTANCE.getUrl(url, pwd)
+                                .compose(RxUtils::toSimpleSingle)
+                                .subscribe(new MyObserver<String>() {
+                                    @Override
+                                    public void onNext(@NonNull String s) {
+                                        ToastUtils.showInfo(s);
+                                        Intent intent = new Intent(Intent.ACTION_VIEW);
+                                        intent.setData(Uri.parse(s));
+                                        startActivity(intent);
+                                    }
+
+                                    @Override
+                                    public void onError(Throwable e) {
+                                        ToastUtils.showError("" + e.getLocalizedMessage());
+                                    }
+                                });
+                    });
+        });
     }
 
     void openIntent(String intentName, String address) {

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

@@ -0,0 +1,114 @@
+package xyz.fycz.myreader.webapi
+
+import io.reactivex.Observable
+import okhttp3.MediaType.Companion.toMediaTypeOrNull
+import okhttp3.RequestBody.Companion.toRequestBody
+import org.jsoup.Jsoup
+import xyz.fycz.myreader.common.URLCONST
+import xyz.fycz.myreader.util.help.StringHelper
+import xyz.fycz.myreader.util.utils.OkHttpUtils
+import java.net.HttpURLConnection
+import java.net.URL
+import java.util.*
+
+/**
+ * @author fengyue
+ * @date 2022/1/22 18:50
+ */
+object LanZouApi {
+    /**
+     * 通过api获取蓝奏云可下载直链
+     *
+     * @param url
+     * @param password
+     */
+    fun getUrl(url: String, password: String = ""): Observable<String> {
+        return Observable.create {
+            val html = OkHttpUtils.getHtml(url)
+            val url2 = if (password.isEmpty()) {
+                val url1 = getUrl1(html)
+                val key = getKey(OkHttpUtils.getHtml(url1))
+                getUrl2(key, url1)
+            } else {
+                getUrl2(StringHelper.getSubString(html, "sign=", "&"), url, password)
+            }
+            it.onNext(getRedirectUrl(url2))
+            it.onComplete()
+        }
+    }
+
+    private fun getUrl1(html: String): String {
+        val doc = Jsoup.parse(html)
+        return URLCONST.LAN_ZOUS_URL + doc.getElementsByClass("ifr2").attr("src")
+    }
+
+    private fun getKey(html: String): String {
+        var lanzousKeyStart = "var pposturl = '"
+        val keyName = StringHelper.getSubString(html, "'sign':", ",")
+        lanzousKeyStart = if (keyName.endsWith("'")) {
+            "'sign':'"
+        } else {
+            "var $keyName = '"
+        }
+        return StringHelper.getSubString(html, lanzousKeyStart, "'")
+    }
+
+
+    private fun getUrl2(key: String, referer: String, password: String = ""): String {
+        val mediaType = "application/x-www-form-urlencoded".toMediaTypeOrNull()
+        val body = if (password.isEmpty()) {
+            "action=downprocess&sign=$key&ves=1"
+        } else {
+            "action=downprocess&sign=$key&p=$password"
+        }
+        val requestBody = body.toRequestBody(mediaType)
+
+        val headers = HashMap<String, String>()
+        headers["Referer"] = referer
+
+        val html = OkHttpUtils.getHtml(
+            URLCONST.LAN_ZOUS_URL + "/ajaxm.php", requestBody,
+            "UTF-8", headers
+        )
+        return getUrl2(html)
+    }
+
+    private fun getUrl2(o: String): String {
+        val info = o.split(",").toTypedArray()
+        val zt = info[0].substring(info[0].indexOf(":") + 1)
+        if (!"1".endsWith(zt)) {
+            return ""
+        }
+        var dom = info[1].substring(info[1].indexOf(":") + 2, info[1].lastIndexOf("\""))
+        var url = info[2].substring(info[2].indexOf(":") + 2, info[2].lastIndexOf("\""))
+        dom = dom.replace("\\", "")
+        url = url.replace("\\", "")
+        return "$dom/file/$url"
+    }
+
+    /**
+     * 获取重定向地址
+     *
+     * @param path
+     */
+    private fun getRedirectUrl(path: String): String {
+        val conn = URL(path)
+            .openConnection() as HttpURLConnection
+        conn.instanceFollowRedirects = false
+        conn.connectTimeout = 5000
+        conn.setRequestProperty(
+            "User-Agent",
+            "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)"
+        )
+        conn.setRequestProperty("Accept-Language", "zh-cn")
+        conn.setRequestProperty("Connection", "Keep-Alive")
+        conn.setRequestProperty(
+            "Accept",
+            "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/x-silverlight, */*"
+        )
+        conn.connect()
+        val redirectUrl = conn.getHeaderField("Location")
+        conn.disconnect()
+        return redirectUrl
+    }
+}

app/src/main/res/layout/layout_about_content.xml

@@ -333,6 +333,35 @@
                 app:srcCompat="@drawable/ic_right_arrow"
                 app:tint="@color/textSecondary" />
         </RelativeLayout>
+
+        <View
+            android:layout_width="match_parent"
+            android:layout_height="10dp" />
+        <RelativeLayout
+            android:id="@+id/rl_lan_zou"
+            android:layout_width="match_parent"
+            android:layout_height="50dp"
+            android:background="@drawable/selector_common_bg"
+            android:gravity="center"
+            android:paddingStart="20dp"
+            android:paddingEnd="10dp">
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_centerVertical="true"
+                android:text="@string/lan_zou_parse"
+                android:textColor="@color/textPrimary"
+                android:textSize="@dimen/text_normal_size" />
+
+            <androidx.appcompat.widget.AppCompatImageView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_alignParentEnd="true"
+                android:layout_centerVertical="true"
+                app:srcCompat="@drawable/ic_right_arrow"
+                app:tint="@color/textSecondary" />
+        </RelativeLayout>
     </LinearLayout>
 
 </androidx.core.widget.NestedScrollView>

app/src/main/res/values/strings.xml

@@ -542,6 +542,7 @@
     <string name="net_error_10002">网络连接超时</string>
     <string name="net_error_10003">数据解析失败</string>
     <string name="copy_source">拷贝书源</string>
+    <string name="lan_zou_parse">蓝奏云直链解析</string>
     <!--error string end-->
 
     <string-array name="reset_screen_time">