Download web payment manifests.

chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentManifestParser.java

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.payments;
+
+import org.chromium.base.annotations.CalledByNative;
+import org.chromium.base.annotations.JNINamespace;
+import org.chromium.payments.mojom.PaymentManifestSection;
+
+/** Parses payment manifests in a utility process. */
+@JNINamespace("payments")
+public class PaymentManifestParser {
+    /** Interface for the callback to invoke when finished parsing. */
+    public interface ManifestParseCallback {
+        /**
+         * Called on successful parse of a payment method manifest.
+         *
+         * @param manifest The successfully parsed payment method manifest.
+         */
+        @CalledByNative("ManifestParseCallback")
+        void onManifestParseSuccess(PaymentManifestSection[] manifest);
+
+        /** Called on failed parse of a payment method manifest. */
+        @CalledByNative("ManifestParseCallback")
+        void onManifestParseFailure();
+    }
+
+    /** Owned native host of the utility process that parses manifest contents. */
+    private long mNativePaymentManifestParserAndroid;
+
+    /** Starts the utility process. */
+    public void startUtilityProcess() {
+        assert mNativePaymentManifestParserAndroid == 0;
+        mNativePaymentManifestParserAndroid = nativeCreatePaymentManifestParserAndroid();
+        nativeStartUtilityProcess(mNativePaymentManifestParserAndroid);
+    }
+
+    /** Stops the utility process. */
+    public void stopUtilityProcess() {
+        assert mNativePaymentManifestParserAndroid != 0;
+        nativeStopUtilityProcess(mNativePaymentManifestParserAndroid);
+        mNativePaymentManifestParserAndroid = 0;
+    }
+
+    /**
+     * Parses the manifest file asynchronously.
+     *
+     * @param content  The content to parse.
+     * @param callback The callback to invoke when finished parsing.
+     */
+    public void parse(String content, ManifestParseCallback callback) {
+        nativeParsePaymentManifest(mNativePaymentManifestParserAndroid, content, callback);
+    }
+
+    @CalledByNative
+    private static PaymentManifestSection[] createManifest(int size) {
+        return new PaymentManifestSection[size];
+    }
+
+    @CalledByNative
+    private static void addSectionToManifest(PaymentManifestSection[] manifest, int sectionIndex,
+            String packageName, long version, int fingerprintsSize) {
+        manifest[sectionIndex] = new PaymentManifestSection();
+        manifest[sectionIndex].packageName = packageName;
+        manifest[sectionIndex].version = version;
+        manifest[sectionIndex].sha256CertFingerprints = new String[fingerprintsSize];
+    }
+
+    @CalledByNative
+    private static void addFingerprintToSection(PaymentManifestSection[] manifest, int sectionIndex,
+            int fingerprintIndex, String fingerprint) {
+        manifest[sectionIndex].sha256CertFingerprints[fingerprintIndex] = fingerprint;
+    }
+
+    private static native long nativeCreatePaymentManifestParserAndroid();
+    private static native void nativeStartUtilityProcess(long nativePaymentManifestParserAndroid);
+    private static native void nativeParsePaymentManifest(long nativePaymentManifestParserAndroid,
+            String content, ManifestParseCallback callback);
+    private static native void nativeStopUtilityProcess(long nativePaymentManifestParserAndroid);
+}