1 | /* |
2 | * Copyright (C) 2015-2016 Apple 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 |
6 | * are met: |
7 | * 1. Redistributions of source code must retain the above copyright |
8 | * notice, this list of conditions and the following disclaimer. |
9 | * 2. Redistributions in binary form must reproduce the above copyright |
10 | * notice, this list of conditions and the following disclaimer in the |
11 | * documentation and/or other materials provided with the distribution. |
12 | * |
13 | * THIS SOFTWARE IS PROVIDED BY APPLE, INC. ``AS IS'' AND ANY |
14 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
15 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
17 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
18 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
19 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
20 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
21 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
23 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
24 | * |
25 | */ |
26 | |
27 | #include "config.h" |
28 | #include "MediaDevicesRequest.h" |
29 | |
30 | #if ENABLE(MEDIA_STREAM) |
31 | |
32 | #include "CaptureDevice.h" |
33 | #include "Document.h" |
34 | #include "Frame.h" |
35 | #include "JSMediaDeviceInfo.h" |
36 | #include "MediaDevicesEnumerationRequest.h" |
37 | #include "RealtimeMediaSourceCenter.h" |
38 | #include "SecurityOrigin.h" |
39 | #include "UserMediaController.h" |
40 | #include <wtf/MainThread.h> |
41 | #include <wtf/SHA1.h> |
42 | |
43 | namespace WebCore { |
44 | |
45 | inline MediaDevicesRequest::MediaDevicesRequest(Document& document, MediaDevices::EnumerateDevicesPromise&& promise) |
46 | : ContextDestructionObserver(&document) |
47 | , m_promise(WTFMove(promise)) |
48 | { |
49 | } |
50 | |
51 | Ref<MediaDevicesRequest> MediaDevicesRequest::create(Document& document, MediaDevices::EnumerateDevicesPromise&& promise) |
52 | { |
53 | return adoptRef(*new MediaDevicesRequest(document, WTFMove(promise))); |
54 | } |
55 | |
56 | MediaDevicesRequest::~MediaDevicesRequest() |
57 | { |
58 | // This should only get destroyed after the enumeration request has completed or has been canceled. |
59 | ASSERT(!m_enumerationRequest || m_enumerationRequest->wasCanceled()); |
60 | } |
61 | |
62 | SecurityOrigin* MediaDevicesRequest::securityOrigin() const |
63 | { |
64 | if (scriptExecutionContext()) |
65 | return scriptExecutionContext()->securityOrigin(); |
66 | |
67 | return nullptr; |
68 | } |
69 | |
70 | void MediaDevicesRequest::contextDestroyed() |
71 | { |
72 | // The call to m_enumerationRequest->cancel() might delete this. |
73 | auto protectedThis = makeRef(*this); |
74 | |
75 | if (m_enumerationRequest) { |
76 | m_enumerationRequest->cancel(); |
77 | m_enumerationRequest = nullptr; |
78 | } |
79 | ContextDestructionObserver::contextDestroyed(); |
80 | } |
81 | |
82 | void MediaDevicesRequest::start() |
83 | { |
84 | auto& document = downcast<Document>(*scriptExecutionContext()); |
85 | auto* controller = UserMediaController::from(document.page()); |
86 | if (!controller) { |
87 | callOnMainThread([protectedThis = makeRef(*this)]() { |
88 | protectedThis->m_promise.resolve({ }); |
89 | }); |
90 | |
91 | return; |
92 | } |
93 | |
94 | auto microphoneAccess = controller->canCallGetUserMedia(document, { UserMediaController::CaptureType::Microphone }); |
95 | auto cameraAccess = controller->canCallGetUserMedia(document, { UserMediaController::CaptureType::Camera }); |
96 | bool canAccessMicrophone = microphoneAccess == UserMediaController::GetUserMediaAccess::CanCall; |
97 | bool canAccessCamera = cameraAccess == UserMediaController::GetUserMediaAccess::CanCall; |
98 | if (!canAccessMicrophone && !canAccessCamera) { |
99 | controller->logGetUserMediaDenial(document, !canAccessMicrophone ? microphoneAccess : cameraAccess, UserMediaController::BlockedCaller::EnumerateDevices); |
100 | callOnMainThread([protectedThis = makeRef(*this)]() { |
101 | protectedThis->m_promise.resolve({ }); |
102 | }); |
103 | |
104 | return; |
105 | } |
106 | |
107 | // This lambda keeps |this| alive until the request completes or is canceled. |
108 | auto completion = [this, protectedThis = makeRef(*this), canAccessMicrophone, canAccessCamera] (const Vector<CaptureDevice>& captureDevices, const String& deviceIdentifierHashSalt, bool) mutable { |
109 | |
110 | m_enumerationRequest = nullptr; |
111 | |
112 | if (!scriptExecutionContext()) |
113 | return; |
114 | |
115 | auto& document = downcast<Document>(*scriptExecutionContext()); |
116 | document.setDeviceIDHashSalt(deviceIdentifierHashSalt); |
117 | |
118 | Vector<Ref<MediaDeviceInfo>> devices; |
119 | for (auto& deviceInfo : captureDevices) { |
120 | if (!canAccessMicrophone && deviceInfo.type() == CaptureDevice::DeviceType::Microphone) |
121 | continue; |
122 | if (!canAccessCamera && deviceInfo.type() == CaptureDevice::DeviceType::Camera) |
123 | continue; |
124 | |
125 | auto deviceType = deviceInfo.type() == CaptureDevice::DeviceType::Microphone ? MediaDeviceInfo::Kind::Audioinput : MediaDeviceInfo::Kind::Videoinput; |
126 | devices.append(MediaDeviceInfo::create(scriptExecutionContext(), deviceInfo.label(), deviceInfo.persistentId(), deviceInfo.groupId(), deviceType)); |
127 | } |
128 | |
129 | callOnMainThread([protectedThis = makeRef(*this), devices = WTFMove(devices)]() mutable { |
130 | protectedThis->m_promise.resolve(devices); |
131 | }); |
132 | }; |
133 | |
134 | m_enumerationRequest = MediaDevicesEnumerationRequest::create(document, WTFMove(completion)); |
135 | m_enumerationRequest->start(); |
136 | } |
137 | |
138 | } // namespace WebCore |
139 | |
140 | #endif // ENABLE(MEDIA_STREAM) |
141 | |