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1 /* | 1 /* |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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33 | 33 |
34 #include "bindings/core/v8/ScriptPromise.h" | 34 #include "bindings/core/v8/ScriptPromise.h" |
35 #include "core/dom/ExceptionCode.h" | 35 #include "core/dom/ExceptionCode.h" |
36 #include "modules/ModulesExport.h" | 36 #include "modules/ModulesExport.h" |
37 #include "platform/CryptoResult.h" | 37 #include "platform/CryptoResult.h" |
38 #include "public/platform/WebCrypto.h" | 38 #include "public/platform/WebCrypto.h" |
39 #include "wtf/Forward.h" | 39 #include "wtf/Forward.h" |
40 | 40 |
41 namespace blink { | 41 namespace blink { |
42 | 42 |
43 class ScriptPromiseResolver; | |
44 MODULES_EXPORT ExceptionCode webCryptoErrorToExceptionCode(WebCryptoErrorType); | 43 MODULES_EXPORT ExceptionCode webCryptoErrorToExceptionCode(WebCryptoErrorType); |
45 | 44 |
46 // Wrapper around a Promise to notify completion of the crypto operation. | 45 // Wrapper around a Promise to notify completion of the crypto operation. |
47 // | 46 // |
48 // The thread on which CryptoResultImpl was created on is referred to as the | 47 // The thread on which CryptoResultImpl was created on is referred to as the |
49 // "origin thread". | 48 // "origin thread". |
50 // | 49 // |
51 // * At creation time there must be an active ExecutionContext. | 50 // * At creation time there must be an active ExecutionContext. |
52 // * The CryptoResult interface must only be called from the origin thread. | 51 // * All methods of the CryptoResult implementation must be called from |
53 // * ref(), deref(), cancelled() and cancel() can be called from any thread. | 52 // the origin thread. The exception is that ref(), deref(), and |
| 53 // destruction may happen on another thread. |
54 // * One of the completeWith***() functions must be called, or the | 54 // * One of the completeWith***() functions must be called, or the |
55 // m_resolver will be leaked until the ExecutionContext is destroyed. | 55 // m_resolver will be leaked until the ExecutionContext is destroyed. |
56 class CryptoResultImpl final : public CryptoResult { | 56 class CryptoResultImpl final : public CryptoResult { |
57 public: | 57 public: |
| 58 static PassRefPtrWillBeRawPtr<CryptoResultImpl> create(ScriptState*); |
| 59 |
58 ~CryptoResultImpl(); | 60 ~CryptoResultImpl(); |
59 | 61 |
60 static PassRefPtrWillBeRawPtr<CryptoResultImpl> create(ScriptState*); | |
61 | |
62 void completeWithError(WebCryptoErrorType, const WebString&) override; | 62 void completeWithError(WebCryptoErrorType, const WebString&) override; |
63 void completeWithBuffer(const void* bytes, unsigned bytesSize) override; | 63 void completeWithBuffer(const void* bytes, unsigned bytesSize) override; |
64 void completeWithJson(const char* utf8Data, unsigned length) override; | 64 void completeWithJson(const char* utf8Data, unsigned length) override; |
65 void completeWithBoolean(bool) override; | 65 void completeWithBoolean(bool) override; |
66 void completeWithKey(const WebCryptoKey&) override; | 66 void completeWithKey(const WebCryptoKey&) override; |
67 void completeWithKeyPair(const WebCryptoKey& publicKey, const WebCryptoKey&
privateKey) override; | 67 void completeWithKeyPair(const WebCryptoKey& publicKey, const WebCryptoKey&
privateKey) override; |
68 bool cancelled() const override; | |
69 | 68 |
70 // If called after completion (including cancellation) will return an empty | 69 // If called after completion (including cancellation) will return an empty |
71 // ScriptPromise. | 70 // ScriptPromise. |
72 ScriptPromise promise(); | 71 ScriptPromise promise(); |
73 | 72 |
| 73 WebCryptoResult result() |
| 74 { |
| 75 return WebCryptoResult(this, m_cancel.get()); |
| 76 } |
| 77 |
| 78 DECLARE_VIRTUAL_TRACE(); |
| 79 |
74 private: | 80 private: |
75 class Resolver; | 81 class Resolver; |
| 82 class ResultCancel : public CryptoResultCancel { |
| 83 public: |
| 84 static PassRefPtr<ResultCancel> create() |
| 85 { |
| 86 return adoptRef(new ResultCancel); |
| 87 } |
| 88 |
| 89 bool cancelled() const override; |
| 90 |
| 91 void cancel(); |
| 92 private: |
| 93 ResultCancel(); |
| 94 |
| 95 int m_cancelled; |
| 96 }; |
| 97 |
76 explicit CryptoResultImpl(ScriptState*); | 98 explicit CryptoResultImpl(ScriptState*); |
77 | 99 |
| 100 void cancel(); |
78 void clearResolver(); | 101 void clearResolver(); |
79 void cancel(); | |
80 | 102 |
81 // FIXME: ScriptPromiseResolver should not be exported. | 103 RawPtrWillBeMember<Resolver> m_resolver; |
82 // Instead, use ScriptPromise. | 104 |
83 ScriptPromiseResolver* m_resolver; | 105 // Separately communicate cancellation to WebCryptoResults so as to |
84 volatile int m_cancelled; | 106 // allow this result object, which will be on the Oilpan heap, to be |
| 107 // GCed and destructed as needed. That is, it may end being GCed while |
| 108 // the thread owning the heap is detached and shut down, which will |
| 109 // in some cases happen before corresponding webcrypto operations have |
| 110 // all been processed. Hence these webcrypto operations cannot reliably |
| 111 // check cancellation status via this result object. So, keep a separate |
| 112 // cancellation status object for the purpose, which will outlive the |
| 113 // result object and can be safely accessed by multiple threads. |
| 114 RefPtr<ResultCancel> m_cancel; |
85 }; | 115 }; |
86 | 116 |
87 } // namespace blink | 117 } // namespace blink |
88 | 118 |
89 #endif | 119 #endif // CryptoResultImpl_h |
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