Add API Key parsing for experimental APIs

third_party/WebKit/Source/core/experiments/APIKey.cpp

+// Copyright 2015 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.
+
+#include "config.h"
+#include "core/experiments/APIKey.h"
+
+#include "core/dom/ElementTraversal.h"
+#include "core/dom/ExceptionCode.h"
+#include "core/frame/LocalDOMWindow.h"
+#include "core/html/HTMLHeadElement.h"
+#include "core/html/HTMLMetaElement.h"
+#include "platform/RuntimeEnabledFeatures.h"
+#include "platform/weborigin/SecurityOrigin.h"
+
+#include <string>
+
+namespace blink {
+
+PassRefPtrWillBeRawPtr<APIKey> APIKey::parse(const String& keyText)
+{
+    if (keyText.isEmpty()) {
+        return nullptr;
+    }
+
+    // API Key should resemble:
+    // signature|origin|apiName|expiry
+    Vector<String> parts;
+    keyText.split('|', parts);
+    if (parts.size() != 4) {
+        return nullptr;
+    }
+
+    const String& signature = parts[0];
+    const String& originText = parts[1];
+    const String& apiName = parts[2];
+    const String& expiryText = parts[3];
+
+    // Expiry field must be an integer
+    bool expiryIsValid = false;
+    uint64_t expiry = expiryText.toUInt64Strict(&expiryIsValid);
+    if (!expiryIsValid) {
+        return nullptr;
+    }
+
+    // Origin field must be a valid URL
+    KURL origin = KURL(KURL(), originText);
+    if (!origin.isValid()) {
+        return nullptr;
+    }
+
+    return adoptRefWillBeNoop(new APIKey(signature, origin, apiName, expiry));
+}
+
+APIKey::APIKey(const String& signature, const KURL& origin, const String& apiName, uint64_t expiry)
+    : m_signature(signature)
+    , m_origin(origin)
+    , m_apiName(apiName)
+    , m_expiry(expiry)
+{
+}
+
+bool APIKey::isValid(const String& origin, const String& apiName, uint64_t now) const
+{
+    return validateOrigin(origin)
+        && validateApiName(apiName)
+        && validateDate(now);
+}
+
+bool APIKey::validateOrigin(const String& originText) const
+{
+    KURL origin = KURL(KURL(), originText);
+    if (!origin.isValid()) {
+        return false;
+    }
+    return origin == m_origin;
+}
+
+bool APIKey::validateApiName(const String& apiName) const
+{
+    return equalIgnoringCase(m_apiName, apiName);
+}
+
+bool APIKey::validateDate(uint64_t now) const
+{
+    return m_expiry > now;
+}
+
+} // namespace blink