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      1 /*
      2  * Copyright (C) 2013 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 #include "public/platform/WebCryptoAlgorithm.h"
     33 
     34 #include "public/platform/WebCryptoAlgorithmParams.h"
     35 #include "wtf/OwnPtr.h"
     36 #include "wtf/ThreadSafeRefCounted.h"
     37 
     38 namespace WebKit {
     39 
     40 class WebCryptoAlgorithmPrivate : public ThreadSafeRefCounted<WebCryptoAlgorithmPrivate> {
     41 public:
     42     WebCryptoAlgorithmPrivate(WebCryptoAlgorithmId id, const char* name, PassOwnPtr<WebCryptoAlgorithmParams> params)
     43         : id(id)
     44         , name(name)
     45         , params(params)
     46     {
     47     }
     48 
     49     WebCryptoAlgorithmId id;
     50     const char* const name;
     51     OwnPtr<WebCryptoAlgorithmParams> params;
     52 };
     53 
     54 WebCryptoAlgorithm::WebCryptoAlgorithm(WebCryptoAlgorithmId id, const char* name, PassOwnPtr<WebCryptoAlgorithmParams> params)
     55     : m_private(adoptRef(new WebCryptoAlgorithmPrivate(id, name, params)))
     56 {
     57 }
     58 
     59 WebCryptoAlgorithm WebCryptoAlgorithm::adoptParamsAndCreate(WebCryptoAlgorithmId id, const char* name, WebCryptoAlgorithmParams* params)
     60 {
     61     return WebCryptoAlgorithm(id, name, adoptPtr(params));
     62 }
     63 
     64 WebCryptoAlgorithmId WebCryptoAlgorithm::id() const
     65 {
     66     return m_private->id;
     67 }
     68 
     69 const char* WebCryptoAlgorithm::name() const
     70 {
     71     return m_private->name;
     72 }
     73 
     74 WebCryptoAlgorithmParamsType WebCryptoAlgorithm::paramsType() const
     75 {
     76     if (!m_private->params)
     77         return WebCryptoAlgorithmParamsTypeNone;
     78     return m_private->params->type();
     79 }
     80 
     81 WebCryptoAesCbcParams* WebCryptoAlgorithm::aesCbcParams() const
     82 {
     83     if (paramsType() == WebCryptoAlgorithmParamsTypeAesCbcParams)
     84         return static_cast<WebCryptoAesCbcParams*>(m_private->params.get());
     85     return 0;
     86 }
     87 
     88 WebCryptoAesKeyGenParams* WebCryptoAlgorithm::aesKeyGenParams() const
     89 {
     90     if (paramsType() == WebCryptoAlgorithmParamsTypeAesKeyGenParams)
     91         return static_cast<WebCryptoAesKeyGenParams*>(m_private->params.get());
     92     return 0;
     93 }
     94 
     95 WebCryptoHmacParams* WebCryptoAlgorithm::hmacParams() const
     96 {
     97     if (paramsType() == WebCryptoAlgorithmParamsTypeHmacParams)
     98         return static_cast<WebCryptoHmacParams*>(m_private->params.get());
     99     return 0;
    100 }
    101 
    102 WebCryptoRsaSsaParams* WebCryptoAlgorithm::rsaSsaParams() const
    103 {
    104     if (paramsType() == WebCryptoAlgorithmParamsTypeRsaSsaParams)
    105         return static_cast<WebCryptoRsaSsaParams*>(m_private->params.get());
    106     return 0;
    107 }
    108 
    109 WebCryptoRsaKeyGenParams* WebCryptoAlgorithm::rsaKeyGenParams() const
    110 {
    111     if (paramsType() == WebCryptoAlgorithmParamsTypeRsaKeyGenParams)
    112         return static_cast<WebCryptoRsaKeyGenParams*>(m_private->params.get());
    113     return 0;
    114 }
    115 
    116 void WebCryptoAlgorithm::assign(const WebCryptoAlgorithm& other)
    117 {
    118     m_private = other.m_private;
    119 }
    120 
    121 void WebCryptoAlgorithm::reset()
    122 {
    123     m_private.reset();
    124 }
    125 
    126 } // namespace WebKit
    127