PPAPI: Add a (trivial) C++ wrapper for PPB_Crypto_Dev.

Review URL: https://chromiumcodereview.appspot.com/11185055

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@162844 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 62 insertions, 0 deletions

diff --git a/ppapi/cpp/dev/crypto_dev.cc b/ppapi/cpp/dev/crypto_dev.cc
new file mode 100644
index 0000000..fb9328d
--- /dev/null
+++ b/ppapi/cpp/dev/crypto_dev.cc
@@ -0,0 +1,29 @@
+// Copyright (c) 2012 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 "ppapi/cpp/dev/crypto_dev.h"
+
+#include "ppapi/c/dev/ppb_crypto_dev.h"
+#include "ppapi/cpp/module.h"
+#include "ppapi/cpp/module_impl.h"
+
+namespace pp {
+
+namespace {
+
+template <> const char* interface_name<PPB_Crypto_Dev_0_1>() {
+  return PPB_CRYPTO_DEV_INTERFACE_0_1;
+}
+
+}  // namespace
+
+bool Crypto_Dev::GetRandomBytes(char* buffer, uint32_t num_bytes) {
+  if (has_interface<PPB_Crypto_Dev_0_1>()) {
+    get_interface<PPB_Crypto_Dev_0_1>()->GetRandomBytes(buffer, num_bytes);
+    return true;
+  }
+  return false;
+}
+
+}  // namespace pp
diff --git a/ppapi/cpp/dev/crypto_dev.h b/ppapi/cpp/dev/crypto_dev.h
new file mode 100644
index 0000000..2bbd43d8
--- /dev/null
+++ b/ppapi/cpp/dev/crypto_dev.h
@@ -0,0 +1,31 @@
+// Copyright (c) 2012 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.
+
+#ifndef PPAPI_CPP_DEV_CRYPTO_DEV_H_
+#define PPAPI_CPP_DEV_CRYPTO_DEV_H_
+
+#include "ppapi/c/pp_stdint.h"
+
+/// @file
+/// This file defines APIs related to cryptography.
+
+namespace pp {
+
+/// APIs related to cryptography.
+class Crypto_Dev {
+ public:
+  Crypto_Dev() {}
+
+  /// A function that fills the buffer with random bytes. This may be slow, so
+  /// avoid getting more bytes than needed.
+  ///
+  /// @param[out] buffer The buffer to receive the random bytes.
+  /// @param[in] num_bytes A number of random bytes to produce.
+  /// @return True on success, false on failure.
+  bool GetRandomBytes(char* buffer, uint32_t num_bytes);
+};
+
+}  // namespace pp
+
+#endif  // PPAPI_CPP_DEV_CRYPTO_DEV_H_
diff --git a/ppapi/ppapi_sources.gypi b/ppapi/ppapi_sources.gypi
index eb60006..541cfbd 100644
--- a/ppapi/ppapi_sources.gypi
+++ b/ppapi/ppapi_sources.gypi
@@ -201,6 +201,8 @@
       'cpp/dev/audio_input_dev.h',
       'cpp/dev/buffer_dev.cc',
       'cpp/dev/buffer_dev.h',
+      'cpp/dev/crypto_dev.cc',
+      'cpp/dev/crypto_dev.h',
       'cpp/dev/device_ref_dev.cc',
       'cpp/dev/device_ref_dev.h',
       'cpp/dev/directory_entry_dev.cc',