WebCrypto: Add interfaces for importKey().

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

Index: Tools/DumpRenderTree/chromium/TestRunner/src/MockWebCrypto.cpp
diff --git a/Tools/DumpRenderTree/chromium/TestRunner/src/MockWebCrypto.cpp b/Tools/DumpRenderTree/chromium/TestRunner/src/MockWebCrypto.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..50882605ce9cc6bf408a1ca9758fb19130e0e110
--- /dev/null
+++ b/Tools/DumpRenderTree/chromium/TestRunner/src/MockWebCrypto.cpp
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2013 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#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