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