Bug Summary

File:Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/Source/WebCore/Modules/beacon/NavigatorBeacon.cpp
Warning:line 53, column 9
Call argument for 'this' parameter is uncounted and unsafe

Annotated Source Code

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clang -cc1 -cc1 -triple arm64-apple-ios26.2.0-simulator -O3 -Wundef-prefix=TARGET_OS_ -Werror=undef-prefix -Wdeprecated-objc-isa-usage -Werror=deprecated-objc-isa-usage -Werror=implicit-function-declaration -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name UnifiedSource43.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 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/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator26.2.sdk/usr/local/include -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/Release-iphonesimulator/usr/local/include/webrtc -I /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator26.2.sdk/usr/local/include/webrtc -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/Release-iphonesimulator/usr/local/include/webm -I /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator26.2.sdk/usr/local/include/webm -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/PAL.build/PAL.build/DerivedSources -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/PAL.build/Release-iphonesimulator/PAL.build/DerivedSources -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/Source/WebCore -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/WebCore.build/Release-iphonesimulator/WebCore.build/DerivedSources-normal/arm64 -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/WebCore.build/Release-iphonesimulator/WebCore.build/DerivedSources/arm64 -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/WebCore.build/Release-iphonesimulator/WebCore.build/DerivedSources -F/Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/Release-iphonesimulator -F/Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/Release-iphonesimulator -I/usr/local/include -stdlib=libc++ -internal-isystem /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator26.2.sdk/usr/include/c++/v1 -internal-isystem /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator26.2.sdk/usr/local/include 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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/Apple-iOS-26-Safer-CPP-Checks-EWS/build/scan-build-output/StaticAnalyzer/WebCore/WebCore/normal/arm64/UnifiedSource43.plist -x c++ /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/Release-iphonesimulator/DerivedSources/WebCore/unified-sources/UnifiedSource43.cpp
1/*
2 * Copyright (C) 2017-2021 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. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "NavigatorBeacon.h"
28
29#include "CachedRawResource.h"
30#include "DocumentLoader.h"
31#include "DocumentResourceLoader.h"
32#include "FrameDestructionObserverInlines.h"
33#include "HTTPParsers.h"
34#include "LocalFrameInlines.h"
35#include "Navigator.h"
36#include "Page.h"
37#include <wtf/TZoneMallocInlines.h>
38#include <wtf/URL.h>
39#include <wtf/text/MakeString.h>
40
41namespace WebCore {
42
43WTF_MAKE_TZONE_ALLOCATED_IMPL(NavigatorBeacon)::bmalloc::api::HeapRef NavigatorBeacon::s_heapRef; const TZoneSpecification
NavigatorBeacon::s_heapSpec = { &NavigatorBeacon::s_heapRef
, TZoneSpecification::encodeSize<NavigatorBeacon>(), TZoneSpecification
::encodeAlignment<NavigatorBeacon>(), TZoneSpecification
::encodeCategory<NavigatorBeacon>(), ::bmalloc::api::compactAllocationMode
<NavigatorBeacon>(), TZoneSpecification::encodeDescriptor
<NavigatorBeacon>(), }; void* NavigatorBeacon::operatorNewSlow
(size_t size) { if constexpr (::bmalloc::api::compactAllocationMode
<NavigatorBeacon>() == CompactAllocationMode::Compact) return
::bmalloc::api::tzoneAllocateCompactSlow(size, s_heapSpec); return
::bmalloc::api::tzoneAllocateNonCompactSlow(size, s_heapSpec
); } using __makeBtzoneMallocedInlineMacroSemicolonifier __attribute__
((unused)) = int
;
44
45NavigatorBeacon::NavigatorBeacon(Navigator& navigator)
46 : m_navigator(navigator)
47{
48}
49
50NavigatorBeacon::~NavigatorBeacon()
51{
52 for (auto& beacon : m_inflightBeacons)
53 beacon->removeClient(*this);
Call argument for 'this' parameter is uncounted and unsafe
54}
55
56void NavigatorBeacon::ref() const
57{
58 m_navigator->ref();
59}
60
61void NavigatorBeacon::deref() const
62{
63 m_navigator->deref();
64}
65
66Ref<NavigatorBeacon> NavigatorBeacon::from(Navigator& navigator)
67{
68 RefPtr supplement = downcast<NavigatorBeacon>(Supplement<Navigator>::from(&navigator, supplementName()));
69 if (!supplement) {
70 auto newSupplement = makeUniqueWithoutRefCountedCheck<NavigatorBeacon>(navigator);
71 supplement = newSupplement.get();
72 provideTo(&navigator, supplementName(), WTF::move(newSupplement));
73 }
74 return supplement.releaseNonNull();
75}
76
77void NavigatorBeacon::notifyFinished(CachedResource& resource, const NetworkLoadMetrics&, LoadWillContinueInAnotherProcess)
78{
79 if (!resource.resourceError().isNull())
80 logError(resource.resourceError());
81
82 resource.removeClient(*this);
83 bool wasRemoved = m_inflightBeacons.removeFirst(&resource);
84 ASSERT_UNUSED(wasRemoved, wasRemoved)((void)wasRemoved);
85 ASSERT(!m_inflightBeacons.contains(&resource))((void)0);
86}
87
88void NavigatorBeacon::logError(const ResourceError& error)
89{
90 ASSERT(!error.isNull())((void)0);
91
92 RefPtr frame = m_navigator->frame();
93 if (!frame)
94 return;
95
96 RefPtr document = frame->document();
97 if (!document)
98 return;
99
100 ASCIILiteral messageMiddle { ". "_s };
101 String description = error.localizedDescription();
102 if (description.isEmpty()) {
103 if (error.isAccessControl())
104 messageMiddle = " due to access control checks."_s;
105 else
106 messageMiddle = "."_s;
107 }
108
109 document->addConsoleMessage(MessageSource::Network, MessageLevel::Error, makeString("Beacon API cannot load "_s, error.failingURL().string(), messageMiddle, description));
110}
111
112ExceptionOr<bool> NavigatorBeacon::sendBeacon(Document& document, const String& url, std::optional<FetchBody::Init>&& body)
113{
114 URL parsedUrl = document.completeURL(url);
115
116 // Set parsedUrl to the result of the URL parser steps with url and base. If the algorithm returns an error, or if
117 // parsedUrl's scheme is not "http" or "https", throw a "TypeError" exception and terminate these steps.
118 if (!parsedUrl.isValid())
119 return Exception { ExceptionCode::TypeError, "This URL is invalid"_s };
120 if (!parsedUrl.protocolIsInHTTPFamily())
121 return Exception { ExceptionCode::TypeError, "Beacons can only be sent over HTTP(S)"_s };
122
123 if (!document.frame())
124 return false;
125
126 if (!document.shouldBypassMainWorldContentSecurityPolicy() && !protect(document.contentSecurityPolicy())->allowConnectToSource(parsedUrl)) {
127 // We simulate a network error so we return true here. This is consistent with Blink.
128 return true;
129 }
130
131 ResourceRequest request(WTF::move(parsedUrl));
132 request.setHTTPMethod("POST"_s);
133 request.setRequester(ResourceRequestRequester::Beacon);
134 if (RefPtr documentLoader = document.loader())
135 request.setIsAppInitiated(documentLoader->lastNavigationWasAppInitiated());
136
137 ResourceLoaderOptions options;
138 options.credentials = FetchOptions::Credentials::Include;
139 options.cache = FetchOptions::Cache::NoCache;
140 options.keepAlive = true;
141 options.sendLoadCallbacks = SendCallbackPolicy::SendCallbacks;
142
143 if (body) {
144 options.mode = FetchOptions::Mode::NoCors;
145 String mimeType;
146 auto result = FetchBody::extract(WTF::move(body.value()), mimeType);
147 if (result.hasException())
148 return result.releaseException();
149 auto fetchBody = result.releaseReturnValue();
150 if (fetchBody.isReadableStream())
151 return Exception { ExceptionCode::TypeError, "Beacons cannot send ReadableStream body"_s };
152
153 request.setHTTPBody(fetchBody.bodyAsFormData());
154 if (!mimeType.isEmpty()) {
155 request.setHTTPContentType(mimeType);
156 if (!isCrossOriginSafeRequestHeader(HTTPHeaderName::ContentType, mimeType)) {
157 options.mode = FetchOptions::Mode::Cors;
158 options.httpHeadersToKeep.add(HTTPHeadersToKeepFromCleaning::ContentType);
159 }
160 }
161 }
162
163 auto cachedResource = protect(document.cachedResourceLoader())->requestBeaconResource({ WTF::move(request), options });
164 if (!cachedResource) {
165 logError(cachedResource.error());
166 return false;
167 }
168
169 ASSERT(!m_inflightBeacons.contains(cachedResource.value().ptr()))((void)0);
170 m_inflightBeacons.append(cachedResource.value().copyRef());
171 cachedResource.value()->addClient(*this);
172 return true;
173}
174
175ExceptionOr<bool> NavigatorBeacon::sendBeacon(Navigator& navigator, Document& document, const String& url, std::optional<FetchBody::Init>&& body)
176{
177 return NavigatorBeacon::from(navigator)->sendBeacon(document, url, WTF::move(body));
178}
179
180}
181