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以下内容为反编译后的 WebViewAppLinkResolver.java 源代码，内容仅作参考
package bolts;
import android.content.Context;
import android.net.Uri;
import android.webkit.JavascriptInterface;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import bolts.AppLink;
import com.facebook.appevents.AppEventsConstants;
import crash.io.fabric.sdk.android.services.network.HttpRequest;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Callable;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
public class WebViewAppLinkResolver implements AppLinkResolver {
private static final String KEY_AL_VALUE = "value";
private static final String KEY_ANDROID = "android";
private static final String KEY_APP_NAME = "app_name";
private static final String KEY_CLASS = "class";
private static final String KEY_PACKAGE = "package";
private static final String KEY_SHOULD_FALLBACK = "should_fallback";
private static final String KEY_URL = "url";
private static final String KEY_WEB = "web";
private static final String KEY_WEB_URL = "url";
private static final String META_TAG_PREFIX = "al";
private static final String PREFER_HEADER = "Prefer-Html-Meta-Tags";
private static final String TAG_EXTRACTION_JAVASCRIPT = "javascript:boltsWebViewAppLinkResolverResult.setValue((function() { var metaTags = document.getElementsByTagName('meta'); var results = []; for (var i = 0; i < metaTags.length; i++) { var property = metaTags[i].getAttribute('property'); if (property && property.substring(0, 'al:'.length) === 'al:') { var tag = { \"property\": metaTags[i].getAttribute('property') }; if (metaTags[i].hasAttribute('content')) { tag['content'] = metaTags[i].getAttribute('content'); } results.push(tag); } } return JSON.stringify(results);})())";
private final Context context;
public WebViewAppLinkResolver(Context context) {
this.context = context;
}
@Override
public Task<AppLink> getAppLinkFromUrlInBackground(final Uri uri) {
final Capture capture = new Capture();
final Capture capture2 = new Capture();
return Task.callInBackground(new Callable<Void>() {
@Override
public Void call() throws Exception {
URL url = new URL(uri.toString());
URLConnection uRLConnection = null;
while (url != null) {
uRLConnection = url.openConnection();
boolean z = uRLConnection instanceof HttpURLConnection;
if (z) {
((HttpURLConnection) uRLConnection).setInstanceFollowRedirects(true);
}
uRLConnection.setRequestProperty(WebViewAppLinkResolver.PREFER_HEADER, WebViewAppLinkResolver.META_TAG_PREFIX);
uRLConnection.connect();
if (z) {
HttpURLConnection httpURLConnection = (HttpURLConnection) uRLConnection;
if (httpURLConnection.getResponseCode() >= 300 && httpURLConnection.getResponseCode() < 400) {
URL url2 = new URL(httpURLConnection.getHeaderField(HttpRequest.HEADER_LOCATION));
httpURLConnection.disconnect();
url = url2;
}
}
url = null;
}
try {
capture.set(WebViewAppLinkResolver.readFromConnection(uRLConnection));
capture2.set(uRLConnection.getContentType());
return null;
} finally {
if (uRLConnection instanceof HttpURLConnection) {
((HttpURLConnection) uRLConnection).disconnect();
}
}
}
}).onSuccessTask(new Continuation<Void, Task<JSONArray>>() {
@Override
public Task<JSONArray> then(Task<Void> task) throws Exception {
final TaskCompletionSource taskCompletionSource = new TaskCompletionSource();
WebView webView = new WebView(WebViewAppLinkResolver.this.context);
webView.getSettings().setJavaScriptEnabled(true);
webView.setNetworkAvailable(false);
webView.setWebViewClient(new WebViewClient() {
private boolean loaded = false;
private void runJavaScript(WebView webView2) {
if (this.loaded) {
return;
}
this.loaded = true;
webView2.loadUrl(WebViewAppLinkResolver.TAG_EXTRACTION_JAVASCRIPT);
}
@Override
public void onPageFinished(WebView webView2, String str) {
super.onPageFinished(webView2, str);
runJavaScript(webView2);
}
@Override
public void onLoadResource(WebView webView2, String str) {
super.onLoadResource(webView2, str);
runJavaScript(webView2);
}
});
webView.addJavascriptInterface(new Object() {
@JavascriptInterface
public void setValue(String str) {
try {
taskCompletionSource.trySetResult(new JSONArray(str));
} catch (JSONException e) {
taskCompletionSource.trySetError(e);
}
}
}, "boltsWebViewAppLinkResolverResult");
webView.loadDataWithBaseURL(uri.toString(), (String) capture.get(), capture2.get() != null ? ((String) capture2.get()).split(";")[0] : null, null, null);
return taskCompletionSource.getTask();
}
}, Task.UI_THREAD_EXECUTOR).onSuccess(new Continuation<JSONArray, AppLink>() {
@Override
public AppLink then(Task<JSONArray> task) throws Exception {
return WebViewAppLinkResolver.makeAppLinkFromAlData(WebViewAppLinkResolver.parseAlData(task.getResult()), uri);
}
});
}
public static Map<String, Object> parseAlData(JSONArray jSONArray) throws JSONException {
HashMap hashMap = new HashMap();
for (int i = 0; i < jSONArray.length(); i++) {
JSONObject jSONObject = jSONArray.getJSONObject(i);
String[] split = jSONObject.getString("property").split(":");
if (split[0].equals(META_TAG_PREFIX)) {
HashMap hashMap2 = hashMap;
int i2 = 1;
while (true) {
if (i2 >= split.length) {
break;
}
List list = (List) hashMap2.get(split[i2]);
if (list == null) {
list = new ArrayList();
hashMap2.put(split[i2], list);
}
HashMap hashMap3 = list.size() > 0 ? (Map) list.get(list.size() - 1) : null;
if (hashMap3 == null || i2 == split.length - 1) {
hashMap2 = new HashMap();
list.add(hashMap2);
} else {
hashMap2 = hashMap3;
}
i2++;
}
if (jSONObject.has("content")) {
if (jSONObject.isNull("content")) {
hashMap2.put(KEY_AL_VALUE, null);
} else {
hashMap2.put(KEY_AL_VALUE, jSONObject.getString("content"));
}
}
}
}
return hashMap;
}
private static List<Map<String, Object>> getAlList(Map<String, Object> map, String str) {
List<Map<String, Object>> list = (List) map.get(str);
return list == null ? Collections.emptyList() : list;
}
public static AppLink makeAppLinkFromAlData(Map<String, Object> map, Uri uri) {
Uri uri2;
Uri uri3;
ArrayList arrayList = new ArrayList();
List list = (List) map.get("android");
if (list == null) {
list = Collections.emptyList();
}
Iterator it = list.iterator();
while (true) {
uri2 = null;
int i = 0;
if (!it.hasNext()) {
break;
}
Map map2 = (Map) it.next();
List<Map<String, Object>> alList = getAlList(map2, "url");
List<Map<String, Object>> alList2 = getAlList(map2, KEY_PACKAGE);
List<Map<String, Object>> alList3 = getAlList(map2, KEY_CLASS);
List<Map<String, Object>> alList4 = getAlList(map2, "app_name");
int max = Math.max(alList.size(), Math.max(alList2.size(), Math.max(alList3.size(), alList4.size())));
while (i < max) {
arrayList.add(new AppLink.Target((String) (alList2.size() > i ? alList2.get(i).get(KEY_AL_VALUE) : null), (String) (alList3.size() > i ? alList3.get(i).get(KEY_AL_VALUE) : null), tryCreateUrl((String) (alList.size() > i ? alList.get(i).get(KEY_AL_VALUE) : null)), (String) (alList4.size() > i ? alList4.get(i).get(KEY_AL_VALUE) : null)));
i++;
}
}
List list2 = (List) map.get("web");
if (list2 == null || list2.size() <= 0) {
uri3 = uri;
} else {
Map map3 = (Map) list2.get(0);
List list3 = (List) map3.get("url");
List list4 = (List) map3.get(KEY_SHOULD_FALLBACK);
if (list4 == null || list4.size() <= 0 || !Arrays.asList("no", "false", AppEventsConstants.EVENT_PARAM_VALUE_NO).contains(((String) ((Map) list4.get(0)).get(KEY_AL_VALUE)).toLowerCase())) {
uri2 = uri;
}
uri3 = (uri2 == null || list3 == null || list3.size() <= 0) ? uri2 : tryCreateUrl((String) ((Map) list3.get(0)).get(KEY_AL_VALUE));
}
return new AppLink(uri, arrayList, uri3);
}
private static Uri tryCreateUrl(String str) {
if (str == null) {
return null;
}
return Uri.parse(str);
}
public static String readFromConnection(URLConnection uRLConnection) throws IOException {
InputStream inputStream;
int i;
if (uRLConnection instanceof HttpURLConnection) {
HttpURLConnection httpURLConnection = (HttpURLConnection) uRLConnection;
try {
inputStream = uRLConnection.getInputStream();
} catch (Exception unused) {
inputStream = httpURLConnection.getErrorStream();
}
} else {
inputStream = uRLConnection.getInputStream();
}
try {
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
byte[] bArr = new byte[1024];
while (true) {
int read = inputStream.read(bArr);
i = 0;
if (read == -1) {
break;
}
byteArrayOutputStream.write(bArr, 0, read);
}
String contentEncoding = uRLConnection.getContentEncoding();
if (contentEncoding == null) {
String[] split = uRLConnection.getContentType().split(";");
int length = split.length;
while (true) {
if (i >= length) {
break;
}
String trim = split[i].trim();
if (trim.startsWith("charset=")) {
contentEncoding = trim.substring("charset=".length());
break;
}
i++;
}
if (contentEncoding == null) {
contentEncoding = "UTF-8";
}
}
return new String(byteArrayOutputStream.toByteArray(), contentEncoding);
} finally {
inputStream.close();
}
}
}