WebCrypto: Add interfaces for importKey().

Tools/DumpRenderTree/chromium/TestRunner/src/MockWebCrypto.cpp

+/*
+ * Copyright (C) 2013 Google Inc. All rights reserved.
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+ * notice, this list of conditions and the following disclaimer.
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+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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+ */
+
+#include "MockWebCrypto.h"
+
+#include "base/sha1.h"

[abarth-chromium, 2013/07/23 06:22:07]

You're not allowed to depend directly on base from Blink.  If you do, the folks
who maintain base will be sad because they'll be unable to change base without
writing complicated Blink CLs.

Maybe it's not worth trying to mock this functionality out.  It's not going to
scale to the whole API..  Why not complete the implementation in the Content
layer?  You're not going to be able to avoid that work for long anyway.

[eroman, 2013/07/23 06:53:41]

I saw that DumpRenderTree already depended on "base" so I thought it was fair
game:
https://code.google.com/p/chromium/codesearch#chromium/src/third_party/WebKit...

That said, I can just hardcode certain input/output pairs.

I agree that the implementation should just go in Content layer, and that work
is in progress (https://codereview.chromium.org/19757011/).
The hack I had was intended to be short lived so I could test the blink side I
had written. However moving it to TestRunner makes it feel more legitimate.

+#include "public/platform/WebArrayBuffer.h"
+#include "public/platform/WebCryptoAlgorithm.h"
+#include <string>
+#include <string.h>
+
+using namespace WebKit;
+
+namespace WebTestRunner {
+
+namespace {
+
+class MockCryptoOperation : public WebKit::WebCryptoOperation {
+public:
+    MockCryptoOperation(const WebKit::WebCryptoAlgorithm& algorithm, WebKit::WebCryptoOperationResult* result) : m_algorithm(algorithm), m_result(result) { }
+
+    virtual void process(const unsigned char* bytes, size_t size) OVERRIDE
+    {
+        // Don't buffer too much data.
+        if (m_data.size() + size > 100)
+            m_result->completeWithError();
+
+        if (size)
+            m_data.append(reinterpret_cast<const char*>(bytes), size);
+    }
+
+    virtual void abort() OVERRIDE
+    {
+        delete this;
+    }
+
+    virtual void finish() OVERRIDE
+    {
+        if (m_algorithm.id() == WebKit::WebCryptoAlgorithmIdSha1) {
+            WebKit::WebArrayBuffer hash = WebKit::WebArrayBuffer::create(base::kSHA1Length, 1);
+            base::SHA1HashBytes(reinterpret_cast<const unsigned char*>(m_data.data()), m_data.size(), static_cast<unsigned char*>(hash.data()));
+            m_result->completeWithArrayBuffer(hash);
+        } else {
+            m_result->completeWithError();
+        }
+        delete this;
+    }
+
+protected:
+    WebKit::WebCryptoAlgorithm m_algorithm;
+    WebKit::WebCryptoOperationResult* m_result;
+    std::string m_data;
+};
+
+} // namespace
+
+MockWebCrypto* MockWebCrypto::get()
+{
+    static MockWebCrypto crypto;
+    return &crypto;
+}
+
+void MockWebCrypto::digest(const WebKit::WebCryptoAlgorithm& algorithm, WebKit::WebCryptoOperationResult* result)
+{
+    result->initializationSucceded(new MockCryptoOperation(algorithm, result));
+}
+
+void MockWebCrypto::importKey(WebKit::WebCryptoKeyFormat, const unsigned char* keyData, size_t keyDataSize, const WebKit::WebCryptoAlgorithm& algorithm, bool extractable, WebKit::WebCryptoKeyUsageMask usages, WebKit::WebCryptoKeyOperationResult* result)
+{
+    std::string keyDataString(reinterpret_cast<const char*>(keyData), keyDataSize);
+
+    WebKit::WebCryptoKeyType type;
+    if (keyDataString == "reject") {
+        result->completeWithError();
+    } else if (keyDataString == "throw") {
+        result->initializationFailed();
+    } else {
+        if (keyDataString == "public") {
+            type = WebKit::WebCryptoKeyTypePublic;
+        } else if (keyDataString == "private") {
+            type = WebKit::WebCryptoKeyTypePrivate;
+        }
+        result->completeWithKey(WebKit::WebCryptoKey::create(0, type, extractable, algorithm, usages));
+    }
+}
+
+} // namespace WebTestRunner