Bug Summary

File:Source/WebKit/Shared/WebHitTestResultData.cpp
Warning:line 128, column 23
Local variable 'cachedImage' is uncounted and unsafe

Annotated Source Code

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clang -cc1 -cc1 -triple arm64-apple-macosx15.5.0 -Os -Wundef-prefix=TARGET_OS_ -Werror=undef-prefix -Wdeprecated-objc-isa-usage -Werror=deprecated-objc-isa-usage -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name UnifiedSource60.cpp -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=osx -analyzer-checker=security.insecureAPI.decodeValueOfObjCType -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -analyzer-config-compatibility-mode=true -mrelocation-model 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/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.5.sdk/usr/local/include -iframework /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.5.sdk/System/Library/PrivateFrameworks -iframework /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.5.sdk/System/Library/PrivateFrameworks -isystem /Volumes/Data/worker/macOS-Safer-CPP-Checks-EWS/build/WebKitLibraries/SDKs/macosx15.0-additions.sdk/usr/local/include -include-pch /Volumes/Data/worker/macOS-Safer-CPP-Checks-EWS/build/WebKitBuild/PrecompiledHeaders/SharedPrecompiledHeaders/10373006496219643705/WebKit2Prefix.h.gch -D _LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_EXTENSIVE -D CLANG_WEBKIT_BRANCH=1 -D NDEBUG -D HAVE_CORE_PREDICTION -D ENABLE_LOWER_FORMATREADERBUNDLE_CODESIGNING_REQUIREMENTS -D WEBKIT_BUNDLE_VERSION="625.1.10+" -D FRAMEWORK_NAME=WebKit -D __clang_analyzer__ -I 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/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.5.sdk/usr/local/include/pal/graphics/WebGPU -I /Volumes/Data/worker/macOS-Safer-CPP-Checks-EWS/build/WebKitBuild/Release/usr/local/include/WebKitAdditions -I /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.5.sdk/usr/local/include/WebKitAdditions -I /Volumes/Data/worker/macOS-Safer-CPP-Checks-EWS/build/WebKitBuild/Release/usr/local/include/webrtc -I /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.5.sdk/usr/local/include/webrtc -I /Volumes/Data/worker/macOS-Safer-CPP-Checks-EWS/build/WebKitBuild/Release/usr/local/include/webm -I /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.5.sdk/usr/local/include/webm -I /Volumes/Data/worker/macOS-Safer-CPP-Checks-EWS/build/Source/WebKit -I /Volumes/Data/worker/macOS-Safer-CPP-Checks-EWS/build/WebKitBuild/WebKit.build/Release/WebKit.build/DerivedSources-normal/arm64 -I /Volumes/Data/worker/macOS-Safer-CPP-Checks-EWS/build/WebKitBuild/WebKit.build/Release/WebKit.build/DerivedSources/arm64 -I /Volumes/Data/worker/macOS-Safer-CPP-Checks-EWS/build/WebKitBuild/WebKit.build/Release/WebKit.build/DerivedSources -F/Volumes/Data/worker/macOS-Safer-CPP-Checks-EWS/build/WebKitBuild/Release -F/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.5.sdk/System/Library/Frameworks/WebKit.framework/Versions/A/Frameworks -D __STDC_WANT_LIB_EXT1__=1 -I/usr/local/include -stdlib=libc++ -internal-isystem /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.5.sdk/usr/include/c++/v1 -internal-isystem /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.5.sdk/usr/local/include -internal-isystem 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-Wpointer-arith -Wredundant-decls -Wwrite-strings -Wexit-time-destructors -Wglobal-constructors -Wtautological-compare -Wimplicit-fallthrough -Wvla -Wliteral-conversion -Wthread-safety -Wno-profile-instr-out-of-date -Wno-profile-instr-unprofiled -Wno-backend-plugin -Wunsafe-buffer-usage -Wno-unknown-warning-option -Wno-missing-field-initializers -Wno-nullability-completeness -std=c++2b -fdeprecated-macro -ferror-limit 19 -fmacro-backtrace-limit=0 -fvisibility=hidden -fvisibility-inlines-hidden -stack-protector 1 -fblocks -fencode-extended-block-signature -fno-rtti -fregister-global-dtors-with-atexit -fgnuc-version=4.2.1 -fno-cxx-modules -fno-implicit-modules -fskip-odr-check-in-gmf -fpascal-strings -fmax-type-align=16 -fdiagnostics-show-note-include-stack -vectorize-loops -vectorize-slp -fsafe-buffer-usage-suggestions -analyzer-output=html -analyzer-config report-in-main-source-file=true -analyzer-config nullability:NoDiagnoseCallsToSystemHeaders=true -analyzer-checker optin.osx.cocoa.localizability.NonLocalizedStringChecker -analyzer-checker security.insecureAPI.UncheckedReturn -analyzer-checker security.insecureAPI.getpw -analyzer-checker security.insecureAPI.gets -analyzer-checker security.insecureAPI.mkstemp -analyzer-checker security.insecureAPI.mktemp -analyzer-disable-checker security.insecureAPI.rand -analyzer-disable-checker security.insecureAPI.strcpy -analyzer-checker security.insecureAPI.vfork -analyzer-disable-checker alpha,apiModeling,core,cplusplus,deadcode,debug,fuchsia,nullability,optin,osx,security,unix,webkit -analyzer-checker alpha.webkit.ForwardDeclChecker,alpha.webkit.MemoryUnsafeCastChecker,alpha.webkit.NoDeleteChecker,alpha.webkit.NoUncheckedPtrMemberChecker,alpha.webkit.NoUnretainedMemberChecker,alpha.webkit.RetainPtrCtorAdoptChecker,alpha.webkit.UncheckedCallArgsChecker,alpha.webkit.UncheckedLocalVarsChecker,alpha.webkit.UncountedCallArgsChecker,alpha.webkit.UncountedLocalVarsChecker,alpha.webkit.UnretainedCallArgsChecker,alpha.webkit.UnretainedLambdaCapturesChecker,alpha.webkit.UnretainedLocalVarsChecker,webkit.NoUncountedMemberChecker,webkit.RefCntblBaseVirtualDtor,webkit.UncountedLambdaCapturesChecker -analyzer-config max-nodes=10000000 -analyzer-config verbose-report-filename=true -fdwarf2-cfi-asm -o /Volumes/Data/worker/macOS-Safer-CPP-Checks-EWS/build/scan-build-output/StaticAnalyzer/WebKit/WebKit/normal/arm64/UnifiedSource60.plist -x c++ /Volumes/Data/worker/macOS-Safer-CPP-Checks-EWS/build/WebKitBuild/Release/DerivedSources/WebKit/unified-sources/UnifiedSource60.cpp
1/*
2 * Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies)
3 * Copyright (C) 2013-2025 Apple Inc. All rights reserved.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB. If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 */
20
21#include "config.h"
22#include "WebHitTestResultData.h"
23
24#include "ShareableBitmapUtilities.h"
25#include "WebFrame.h"
26#include <WebCore/DocumentView.h>
27#include <WebCore/ElementInlines.h>
28#include <WebCore/EventHandler.h>
29#include <WebCore/FrameDestructionObserverInlines.h>
30#include <WebCore/HitTestResult.h>
31#include <WebCore/LocalFrame.h>
32#include <WebCore/LocalFrameView.h>
33#include <WebCore/NavigationAction.h>
34#include <WebCore/Node.h>
35#include <WebCore/RenderImage.h>
36#include <WebCore/SharedBuffer.h>
37#include <WebCore/Text.h>
38#include <wtf/URL.h>
39#include <wtf/text/WTFString.h>
40
41namespace WebKit {
42using namespace WebCore;
43
44static WebHitTestResultData::ElementType elementTypeFromHitTestResult(const HitTestResult& hitTestResult)
45{
46 if (!hitTestResult.hasMediaElement())
47 return WebHitTestResultData::ElementType::None;
48
49 return hitTestResult.mediaIsVideo() ? WebHitTestResultData::ElementType::Video : WebHitTestResultData::ElementType::Audio;
50}
51
52static RefPtr<WebFrame> webFrameFromHitTestResult(const HitTestResult& hitTestResult)
53{
54 RefPtr coreFrame = hitTestResult.frame();
55 if (!coreFrame)
56 return nullptr;
57
58 return WebFrame::fromCoreFrame(*coreFrame);
59}
60
61static std::optional<ResourceResponse> linkLocalResourceFromHitTestResult(const HitTestResult& hitTestResult)
62{
63 if (!hitTestResult.hasLocalDataForLinkURL())
64 return std::nullopt;
65
66 RefPtr webFrame = webFrameFromHitTestResult(hitTestResult);
67 if (!webFrame)
68 return std::nullopt;
69
70 return webFrame->resourceResponseForURL(hitTestResult.absoluteLinkURL());
71}
72
73static String imageSuggestedFilenameFromHitTestResult(const HitTestResult& hitTestResult)
74{
75 if (!hitTestResult.hasEntireImage())
76 return nullString();
77
78 RefPtr webFrame = webFrameFromHitTestResult(hitTestResult);
79 if (!webFrame)
80 return nullString();
81
82 return webFrame->suggestedFilenameForResourceWithURL(hitTestResult.absoluteImageURL());
83}
84
85WebHitTestResultData::WebHitTestResultData() = default;
86
87WebHitTestResultData::WebHitTestResultData(const HitTestResult& hitTestResult, const String& tooltipText, bool includeImage)
88 : absoluteImageURL(hitTestResult.absoluteImageURL().string())
89 , absolutePDFURL(hitTestResult.absolutePDFURL().string())
90 , absoluteLinkURL(hitTestResult.absoluteLinkURL().string())
91 , absoluteMediaURL(hitTestResult.absoluteMediaURL().string())
92 , linkLabel(hitTestResult.textContent())
93 , linkTitle(hitTestResult.titleDisplayString())
94 , linkSuggestedFilename(hitTestResult.linkSuggestedFilename())
95 , imageSuggestedFilename(imageSuggestedFilenameFromHitTestResult(hitTestResult))
96 , isContentEditable(hitTestResult.isContentEditable())
97 , elementBoundingBox(elementBoundingBoxInWindowCoordinates(hitTestResult))
98 , isScrollbar(IsScrollbar::No)
99 , isSelected(hitTestResult.isSelected())
100 , isTextNode(is<Text>(hitTestResult.innerNode()))
101 , isOverTextInsideFormControlElement(hitTestResult.isOverTextInsideFormControlElement())
102 , isDownloadableMedia(hitTestResult.isDownloadableMedia())
103 , mediaIsInFullscreen(hitTestResult.mediaIsInFullscreen())
104 , isActivePDFAnnotation(false)
105 , elementType(elementTypeFromHitTestResult(hitTestResult))
106 , frameInfo(frameInfoDataFromHitTestResult(hitTestResult))
107 , targetFrame(hitTestResult.targetFrame() ? std::optional(hitTestResult.targetFrame()->frameID()) : std::nullopt)
108 , tooltipText(tooltipText)
109 , hasEntireImage(hitTestResult.hasEntireImage())
110 , allowsFollowingLink(hitTestResult.allowsFollowingLink())
111 , allowsFollowingImageURL(hitTestResult.allowsFollowingImageURL())
112 , linkLocalResourceResponse(linkLocalResourceFromHitTestResult(hitTestResult))
113{
114 if (auto* scrollbar = hitTestResult.scrollbar())
115 isScrollbar = scrollbar->orientation() == ScrollbarOrientation::Horizontal ? IsScrollbar::Horizontal : IsScrollbar::Vertical;
116
117 if (!includeImage)
118 return;
119
120 if (RefPtr image = hitTestResult.image()) {
121 if (RefPtr buffer = image->data())
122 imageSharedMemory = WebCore::SharedMemory::copyBuffer(*buffer);
123 }
124
125 if (RefPtr target = hitTestResult.innerNonSharedNode()) {
126 if (CheckedPtr renderer = dynamicDowncast<RenderImage>(target->renderer())) {
127 imageBitmap = createShareableBitmap(*renderer);
128 if (auto* cachedImage = renderer->cachedImage()) {
Local variable 'cachedImage' is uncounted and unsafe
129 if (RefPtr image = cachedImage->image())
130 sourceImageMIMEType = image->mimeType();
131 }
132
133 imageText = [&]() -> String {
134 if (RefPtr element = dynamicDowncast<Element>(target.get())) {
135 auto& title = element->attributeWithoutSynchronization(HTMLNames::titleAttr);
136 if (!title.isEmpty())
137 return title;
138 }
139
140 return renderer->altText();
141 }();
142 }
143 }
144}
145
146WebHitTestResultData::WebHitTestResultData(const HitTestResult& hitTestResult, const String& tooltipText)
147 : WebHitTestResultData(hitTestResult, tooltipText, false) { }
148
149WebHitTestResultData::WebHitTestResultData(const HitTestResult& hitTestResult, bool includeImage)
150 : WebHitTestResultData(hitTestResult, String(), includeImage) { }
151
152WebHitTestResultData::WebHitTestResultData(const String& absoluteImageURL, const String& absolutePDFURL, const String& absoluteLinkURL, const String& absoluteMediaURL, const String& linkLabel, const String& linkTitle, const String& linkSuggestedFilename, const String& imageSuggestedFilename, bool isContentEditable, const WebCore::IntRect& elementBoundingBox, const WebKit::WebHitTestResultData::IsScrollbar& isScrollbar, bool isSelected, bool isTextNode, bool isOverTextInsideFormControlElement, bool isDownloadableMedia, bool mediaIsInFullscreen, bool isActivePDFAnnotation, const WebHitTestResultData::ElementType& elementType, std::optional<FrameInfoData>&& frameInfo, std::optional<WebCore::FrameIdentifier> targetFrame, std::optional<WebCore::RemoteUserInputEventData> remoteUserInputEventData, const String& lookupText, const String& tooltipText, const String& imageText, std::optional<WebCore::SharedMemory::Handle>&& imageHandle, const RefPtr<WebCore::ShareableBitmap>& imageBitmap, const String& sourceImageMIMEType, bool hasEntireImage, bool allowsFollowingLink, bool allowsFollowingImageURL, std::optional<WebCore::ResourceResponse>&& linkLocalResourceResponse,
153#if PLATFORM(MAC)(defined 1 && 1)
154 const WebHitTestResultPlatformData& platformData,
155#endif
156 const WebCore::DictionaryPopupInfo& dictionaryPopupInfo, const RefPtr<WebCore::TextIndicator>& linkTextIndicator)
157 : absoluteImageURL(absoluteImageURL)
158 , absolutePDFURL(absolutePDFURL)
159 , absoluteLinkURL(absoluteLinkURL)
160 , absoluteMediaURL(absoluteMediaURL)
161 , linkLabel(linkLabel)
162 , linkTitle(linkTitle)
163 , linkSuggestedFilename(linkSuggestedFilename)
164 , imageSuggestedFilename(imageSuggestedFilename)
165 , isContentEditable(isContentEditable)
166 , elementBoundingBox(elementBoundingBox)
167 , isScrollbar(isScrollbar)
168 , isSelected(isSelected)
169 , isTextNode(isTextNode)
170 , isOverTextInsideFormControlElement(isOverTextInsideFormControlElement)
171 , isDownloadableMedia(isDownloadableMedia)
172 , mediaIsInFullscreen(mediaIsInFullscreen)
173 , isActivePDFAnnotation(isActivePDFAnnotation)
174 , elementType(elementType)
175 , frameInfo(WTF::move(frameInfo))
176 , targetFrame(targetFrame)
177 , remoteUserInputEventData(remoteUserInputEventData)
178 , lookupText(lookupText)
179 , tooltipText(tooltipText)
180 , imageText(imageText)
181 , imageBitmap(imageBitmap)
182 , sourceImageMIMEType(sourceImageMIMEType)
183 , hasEntireImage(hasEntireImage)
184 , allowsFollowingLink(allowsFollowingLink)
185 , allowsFollowingImageURL(allowsFollowingImageURL)
186 , linkLocalResourceResponse(linkLocalResourceResponse)
187#if PLATFORM(MAC)(defined 1 && 1)
188 , platformData(platformData)
189#endif
190 , dictionaryPopupInfo(dictionaryPopupInfo)
191 , linkTextIndicator(linkTextIndicator)
192{
193 if (imageHandle)
194 imageSharedMemory = WebCore::SharedMemory::map(WTF::move(*imageHandle), WebCore::SharedMemory::Protection::ReadOnly);
195}
196
197WebHitTestResultData::~WebHitTestResultData()
198{
199}
200
201IntRect WebHitTestResultData::elementBoundingBoxInWindowCoordinates(const WebCore::HitTestResult& hitTestResult)
202{
203 RefPtr node = hitTestResult.innerNonSharedNode();
204 if (!node)
205 return IntRect();
206
207 RefPtr frame = node->document().frame();
208 if (!frame)
209 return IntRect();
210
211 RefPtr view = frame->view();
212 if (!view)
213 return IntRect();
214
215 CheckedPtr renderer = node->renderer();
216 if (!renderer)
217 return IntRect();
218
219 return view->contentsToWindow(renderer->absoluteBoundingBoxRect());
220}
221
222std::optional<WebCore::SharedMemory::Handle> WebHitTestResultData::getImageSharedMemoryHandle() const
223{
224 std::optional<WebCore::SharedMemory::Handle> imageHandle = std::nullopt;
225 if (RefPtr memory = imageSharedMemory; memory && !memory->span().empty()) {
226 if (auto handle = memory->createHandle(WebCore::SharedMemory::Protection::ReadOnly))
227 imageHandle = WTF::move(*handle);
228 }
229 return imageHandle;
230}
231
232std::optional<FrameInfoData> WebHitTestResultData::frameInfoDataFromHitTestResult(const WebCore::HitTestResult& hitTestResult)
233{
234 RefPtr webFrame = webFrameFromHitTestResult(hitTestResult);
235 if (!webFrame)
236 return std::nullopt;
237
238 return webFrame->info();
239}
240
241} // WebKit