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 "modules/crypto/CryptoResultImpl.h"
33
34 #include "bindings/core/v8/Dictionary.h"
35 #include "bindings/core/v8/ScriptPromiseResolver.h"
36 #include "bindings/core/v8/ScriptState.h"
37 #include "core/dom/ContextLifecycleObserver.h"
38 #include "core/dom/DOMError.h"
39 #include "core/dom/DOMException.h"
40 #include "core/dom/ExecutionContext.h"
41 #include "modules/crypto/CryptoKey.h"
42 #include "modules/crypto/NormalizeAlgorithm.h"
43 #include "public/platform/Platform.h"
44 #include "public/platform/WebArrayBuffer.h"
45 #include "public/platform/WebCryptoAlgorithm.h"
46 #include "wtf/ArrayBufferView.h"
47
48 namespace blink {
49
50 class CryptoResultImpl::WeakResolver : public ScriptPromiseResolver {
51 public:
create(ScriptState * scriptState,CryptoResultImpl * result)52 static WeakPtr<ScriptPromiseResolver> create(ScriptState* scriptState, CryptoResultImpl* result)
53 {
54 RefPtr<WeakResolver> p = adoptRef(new WeakResolver(scriptState, result));
55 p->suspendIfNeeded();
56 p->keepAliveWhilePending();
57 return p->m_weakPtrFactory.createWeakPtr();
58 }
59
~WeakResolver()60 virtual ~WeakResolver()
61 {
62 m_result->cancel();
63 }
64
65 private:
WeakResolver(ScriptState * scriptState,CryptoResultImpl * result)66 WeakResolver(ScriptState* scriptState, CryptoResultImpl* result)
67 : ScriptPromiseResolver(scriptState)
68 , m_weakPtrFactory(this)
69 , m_result(result) { }
70 WeakPtrFactory<ScriptPromiseResolver> m_weakPtrFactory;
71 RefPtr<CryptoResultImpl> m_result;
72 };
73
webCryptoErrorToExceptionCode(WebCryptoErrorType errorType)74 ExceptionCode webCryptoErrorToExceptionCode(WebCryptoErrorType errorType)
75 {
76 switch (errorType) {
77 case WebCryptoErrorTypeNotSupported:
78 return NotSupportedError;
79 case WebCryptoErrorTypeSyntax:
80 return SyntaxError;
81 case WebCryptoErrorTypeInvalidState:
82 return InvalidStateError;
83 case WebCryptoErrorTypeInvalidAccess:
84 return InvalidAccessError;
85 case WebCryptoErrorTypeUnknown:
86 return UnknownError;
87 case WebCryptoErrorTypeData:
88 return DataError;
89 case WebCryptoErrorTypeOperation:
90 return OperationError;
91 case WebCryptoErrorTypeType:
92 // FIXME: This should construct a TypeError instead. For now do
93 // something to facilitate refactor, but this will need to be
94 // revisited.
95 return DataError;
96 }
97
98 ASSERT_NOT_REACHED();
99 return 0;
100 }
101
~CryptoResultImpl()102 CryptoResultImpl::~CryptoResultImpl()
103 {
104 }
105
create(ScriptState * scriptState)106 PassRefPtr<CryptoResultImpl> CryptoResultImpl::create(ScriptState* scriptState)
107 {
108 return adoptRef(new CryptoResultImpl(scriptState));
109 }
110
completeWithError(WebCryptoErrorType errorType,const WebString & errorDetails)111 void CryptoResultImpl::completeWithError(WebCryptoErrorType errorType, const WebString& errorDetails)
112 {
113 if (m_resolver)
114 m_resolver->reject(DOMException::create(webCryptoErrorToExceptionCode(errorType), errorDetails));
115 }
116
completeWithBuffer(const WebArrayBuffer & buffer)117 void CryptoResultImpl::completeWithBuffer(const WebArrayBuffer& buffer)
118 {
119 if (m_resolver)
120 m_resolver->resolve(PassRefPtr<ArrayBuffer>(buffer));
121 }
122
completeWithJson(const char * utf8Data,unsigned length)123 void CryptoResultImpl::completeWithJson(const char* utf8Data, unsigned length)
124 {
125 if (m_resolver) {
126 ScriptPromiseResolver* resolver = m_resolver.get();
127 ScriptState* scriptState = resolver->scriptState();
128 ScriptState::Scope scope(scriptState);
129
130 v8::Handle<v8::String> jsonString = v8::String::NewFromUtf8(scriptState->isolate(), utf8Data, v8::String::kInternalizedString, length);
131
132 v8::TryCatch exceptionCatcher;
133 v8::Handle<v8::Value> jsonDictionary = v8::JSON::Parse(jsonString);
134 if (exceptionCatcher.HasCaught() || jsonDictionary.IsEmpty()) {
135 ASSERT_NOT_REACHED();
136 resolver->reject(DOMException::create(OperationError, "Failed inflating JWK JSON to object"));
137 } else {
138 resolver->resolve(jsonDictionary);
139 }
140 }
141 }
142
completeWithBoolean(bool b)143 void CryptoResultImpl::completeWithBoolean(bool b)
144 {
145 if (m_resolver)
146 m_resolver->resolve(b);
147 }
148
completeWithKey(const WebCryptoKey & key)149 void CryptoResultImpl::completeWithKey(const WebCryptoKey& key)
150 {
151 if (m_resolver)
152 m_resolver->resolve(CryptoKey::create(key));
153 }
154
completeWithKeyPair(const WebCryptoKey & publicKey,const WebCryptoKey & privateKey)155 void CryptoResultImpl::completeWithKeyPair(const WebCryptoKey& publicKey, const WebCryptoKey& privateKey)
156 {
157 if (m_resolver) {
158 ScriptState* scriptState = m_resolver->scriptState();
159 ScriptState::Scope scope(scriptState);
160
161 Dictionary keyPair = Dictionary::createEmpty(scriptState->isolate());
162
163 v8::Handle<v8::Value> publicKeyValue = toV8NoInline(CryptoKey::create(publicKey), scriptState->context()->Global(), scriptState->isolate());
164 v8::Handle<v8::Value> privateKeyValue = toV8NoInline(CryptoKey::create(privateKey), scriptState->context()->Global(), scriptState->isolate());
165
166 keyPair.set("publicKey", publicKeyValue);
167 keyPair.set("privateKey", privateKeyValue);
168
169 m_resolver->resolve(keyPair.v8Value());
170 }
171 }
172
cancelled() const173 bool CryptoResultImpl::cancelled() const
174 {
175 return acquireLoad(&m_cancelled);
176 }
177
cancel()178 void CryptoResultImpl::cancel()
179 {
180 releaseStore(&m_cancelled, 1);
181 }
182
CryptoResultImpl(ScriptState * scriptState)183 CryptoResultImpl::CryptoResultImpl(ScriptState* scriptState)
184 : m_cancelled(0)
185 {
186 // Creating the WeakResolver may return nullptr if active dom objects have
187 // been stopped. And in the process set m_cancelled to 1.
188 m_resolver = WeakResolver::create(scriptState, this);
189 }
190
promise()191 ScriptPromise CryptoResultImpl::promise()
192 {
193 return m_resolver ? m_resolver->promise() : ScriptPromise();
194 }
195
196 } // namespace blink
197