first step

app/src/main/AndroidManifest.xml

@@ -20,6 +20,13 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.AsgardiusS3Manager"
         tools:targetApi="31">
+        <activity
+            android:name=".CorsConfig"
+            android:exported="false">
+            <meta-data
+                android:name="android.app.lib_name"
+                android:value="" />
+        </activity>
         <activity
             android:name=".Settings"
             android:configChanges="orientation|keyboardHidden|screenSize|smallestScreenSize|screenLayout|uiMode|keyboardHidden"
@@ -87,11 +94,11 @@
             android:label="@string/bucket_list" />
         <activity
             android:name=".VideoPlayer"
-            android:resizeableActivity="true"
-            android:supportsPictureInPicture="true"
             android:configChanges="orientation|keyboardHidden|screenSize|smallestScreenSize|screenLayout|uiMode|keyboardHidden"
             android:exported="false"
-            android:launchMode="singleTask" />
+            android:launchMode="singleTask"
+            android:resizeableActivity="true"
+            android:supportsPictureInPicture="true" />
         <activity
             android:name=".MainActivity"
             android:configChanges="orientation|keyboardHidden|screenSize|smallestScreenSize|screenLayout|uiMode|keyboardHidden"

app/src/main/java/asgardius/page/s3manager/BucketSelect.java

@@ -171,6 +171,8 @@ public class BucketSelect extends AppCompatActivity {
 
                             } else if (menuItem.getTitle() == getResources().getString(R.string.object_info)) {
                                 objectInfo(Name.get(position).toString());
+                            } else if (menuItem.getTitle() == getResources().getString(R.string.cors_config)) {
+                                corsConfig(Name.get(position).toString());
                             } else if (menuItem.getTitle() == getResources().getString(R.string.file_del)) {
                                 //Toast.makeText(BucketSelect.this, getResources().getString(R.string.pending_feature), Toast.LENGTH_SHORT).show();
                                 delete(prefix + Name.get(position).toString());
@@ -323,4 +325,16 @@ public class BucketSelect extends AppCompatActivity {
         startActivity(intent);
     }
 
+    private void corsConfig(String bucket) {
+        Intent intent = new Intent(this, CorsConfig.class);
+        intent.putExtra("endpoint", endpoint);
+        intent.putExtra("username", username);
+        intent.putExtra("password", password);
+        intent.putExtra("bucket", bucket);
+        intent.putExtra("region", location);
+        intent.putExtra("style", style);
+        intent.putExtra("pdfendpoint", pdfendpoint);
+        startActivity(intent);
+    }
+
 }

app/src/main/java/asgardius/page/s3manager/CorsConfig.java

@@ -0,0 +1,110 @@
+package asgardius.page.s3manager;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+import android.view.View;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import com.amazonaws.auth.AWSCredentials;
+import com.amazonaws.auth.BasicAWSCredentials;
+import com.amazonaws.regions.Region;
+import com.amazonaws.services.s3.AmazonS3;
+import com.amazonaws.services.s3.AmazonS3Client;
+import com.amazonaws.services.s3.S3ClientOptions;
+import com.amazonaws.services.s3.model.BucketCrossOriginConfiguration;
+import com.amazonaws.services.s3.model.CORSRule;
+import com.amazonaws.services.s3.model.ListObjectsRequest;
+import com.amazonaws.services.s3.model.ObjectListing;
+import com.amazonaws.services.s3.model.S3ObjectSummary;
+
+import java.util.List;
+
+public class CorsConfig extends AppCompatActivity {
+    String username, password, endpoint, bucket, location, title, pdfendpoint;
+    Region region;
+    S3ClientOptions s3ClientOptions;
+    AWSCredentials myCredentials;
+    AmazonS3 s3client;
+    BucketCrossOriginConfiguration bucketcors;
+    boolean style;
+    boolean allorigins, pdfcompatible = false;
+    TextView origins;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_cors_config);
+        endpoint = getIntent().getStringExtra("endpoint");
+        title = getIntent().getStringExtra("title");
+        username = getIntent().getStringExtra("username");
+        password = getIntent().getStringExtra("password");
+        bucket = getIntent().getStringExtra("bucket");
+        style = getIntent().getBooleanExtra("style", false);
+        location = getIntent().getStringExtra("region");
+        pdfendpoint = getIntent().getStringExtra("pdfendpoint");
+        getSupportActionBar().setTitle(bucket+"/");
+        region = Region.getRegion(location);
+        s3ClientOptions = S3ClientOptions.builder().build();
+        myCredentials = new BasicAWSCredentials(username, password);
+        origins = (TextView) findViewById(R.id.origins);
+        try {
+            s3client = new AmazonS3Client(myCredentials, region);
+        } catch (Exception e) {
+            Toast.makeText(getApplicationContext(),getResources().getString(R.string.media_list_fail), Toast.LENGTH_SHORT).show();
+        }
+        s3client.setEndpoint(endpoint);
+        s3ClientOptions.setPathStyleAccess(style);
+        s3client.setS3ClientOptions(s3ClientOptions);
+        Thread getCors = new Thread(new Runnable() {
+
+            @Override
+            public void run() {
+                try  {
+                    //Your code goes here
+                    bucketcors = s3client.getBucketCrossOriginConfiguration(bucket);
+                    if (bucketcors != null) {
+                        List<CORSRule> corsRules = bucketcors.getRules();
+                        for (CORSRule rule: corsRules) {
+                            System.out.println("allowOrigins: "+rule.getAllowedOrigins());
+                            System.out.println("AllowedMethod: "+rule.getAllowedMethods());
+                            if (rule.getAllowedOrigins().toString().equals("[*]")) {
+                                allorigins = true;
+                            } else if (rule.getAllowedOrigins().toString().equals("["+pdfendpoint+"]")) {
+                                pdfcompatible = true;
+                            }
+                        }
+                    }
+
+                    runOnUiThread(new Runnable() {
+
+                        @Override
+                        public void run() {
+                            if (allorigins) {
+                                origins.setText(getResources().getString(R.string.cors_all));
+                            } else if (pdfcompatible) {
+                                origins.setText(getResources().getString(R.string.cors_pdf));
+                            } else {
+                                origins.setText(getResources().getString(R.string.cors_none));
+                            }
+                        }
+                    });
+
+                } catch (Exception e) {
+                    e.printStackTrace();
+                    runOnUiThread(new Runnable() {
+
+                        @Override
+                        public void run() {
+                            Toast.makeText(getApplicationContext(),getResources().getString(R.string.media_list_fail), Toast.LENGTH_SHORT).show();
+                        }
+                    });
+                    //Toast.makeText(getApplicationContext(),getResources().getString(R.string.media_list_fail), Toast.LENGTH_SHORT).show();
+                    finish();
+                }
+            }
+        });
+        getCors.start();
+    }
+}

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

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/activity_main"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    tools:context=".CorsConfig">
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/cors_status"
+        android:textAlignment="center"
+        android:textSize="30sp" />
+
+    <TextView
+        android:id="@+id/origins"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textAlignment="center"
+        android:textSize="25sp" />
+
+</LinearLayout>

app/src/main/res/menu/bucket_menu.xml

@@ -13,6 +13,10 @@
         android:id="@+id/info"
         android:title="@string/object_info" />
 
+    <item
+        android:id="@+id/cors_config"
+        android:title="@string/cors_config" />
+
     <item
         android:id="@+id/deletefolder"
         android:title="@string/file_del" />

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

@@ -95,4 +95,9 @@
     <string name="playback_channel_name">Reproduccion de video</string>
     <string name="not_zero">este valor no puede ser cero</string>
     <string name="path_style">Acceso de estilo de ruta</string>
+    <string name="cors_config">Política CORS</string>
+    <string name="cors_status">Orígenes permitidos</string>
+    <string name="cors_all">Permitidos todos los orígenes</string>
+    <string name="cors_pdf">Permitido el uso de endpoint PDF</string>
+    <string name="cors_none">Uso de endpoint PDF permitido</string>
 </resources>

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

@@ -98,4 +98,9 @@
     <string name="playback_channel_name">Video Playback</string>
     <string name="not_zero">This value cannot be zero</string>
     <string name="path_style">Path style access</string>
+    <string name="cors_config">CORS policy</string>
+    <string name="cors_status">Allowed origins</string>
+    <string name="cors_all">All origins allowed</string>
+    <string name="cors_pdf">PDF Endpoint allowed</string>
+    <string name="cors_none">PDF Endpoint not allowed</string>
 </resources>