Bug Summary

File:var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp
Warning:line 505, column 3
Value stored to 'result' is never read

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name Unified_cpp_dom_base3.cpp -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -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 pic -pic-level 2 -fhalf-no-semantic-interposition -mframe-pointer=all -relaxed-aliasing -ffp-contract=off -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/var/lib/jenkins/workspace/firefox-scan-build/obj-x86_64-pc-linux-gnu/dom/base -fcoverage-compilation-dir=/var/lib/jenkins/workspace/firefox-scan-build/obj-x86_64-pc-linux-gnu/dom/base -resource-dir /usr/lib/llvm-18/lib/clang/18 -include /var/lib/jenkins/workspace/firefox-scan-build/config/gcc_hidden.h -include /var/lib/jenkins/workspace/firefox-scan-build/obj-x86_64-pc-linux-gnu/mozilla-config.h -I /var/lib/jenkins/workspace/firefox-scan-build/obj-x86_64-pc-linux-gnu/dist/stl_wrappers -I /var/lib/jenkins/workspace/firefox-scan-build/obj-x86_64-pc-linux-gnu/dist/system_wrappers -U _FORTIFY_SOURCE -D _FORTIFY_SOURCE=2 -D DEBUG=1 -D MOZ_HAS_MOZGLUE -D MOZILLA_INTERNAL_API -D IMPL_LIBXUL -D STATIC_EXPORTABLE_JS_API -I /var/lib/jenkins/workspace/firefox-scan-build/dom/base -I /var/lib/jenkins/workspace/firefox-scan-build/obj-x86_64-pc-linux-gnu/dom/base -I /var/lib/jenkins/workspace/firefox-scan-build/dom/battery -I /var/lib/jenkins/workspace/firefox-scan-build/dom/events -I /var/lib/jenkins/workspace/firefox-scan-build/dom/media -I /var/lib/jenkins/workspace/firefox-scan-build/dom/network -I /var/lib/jenkins/workspace/firefox-scan-build/caps -I /var/lib/jenkins/workspace/firefox-scan-build/docshell/base -I /var/lib/jenkins/workspace/firefox-scan-build/dom/base -I /var/lib/jenkins/workspace/firefox-scan-build/dom/file -I /var/lib/jenkins/workspace/firefox-scan-build/dom/geolocation -I /var/lib/jenkins/workspace/firefox-scan-build/dom/html -I /var/lib/jenkins/workspace/firefox-scan-build/dom/ipc -I /var/lib/jenkins/workspace/firefox-scan-build/dom/storage -I /var/lib/jenkins/workspace/firefox-scan-build/dom/svg -I /var/lib/jenkins/workspace/firefox-scan-build/dom/xml -I /var/lib/jenkins/workspace/firefox-scan-build/dom/xslt/xpath -I /var/lib/jenkins/workspace/firefox-scan-build/dom/xul -I /var/lib/jenkins/workspace/firefox-scan-build/extensions/spellcheck/src -I /var/lib/jenkins/workspace/firefox-scan-build/gfx/2d -I /var/lib/jenkins/workspace/firefox-scan-build/image -I /var/lib/jenkins/workspace/firefox-scan-build/js/xpconnect/loader -I /var/lib/jenkins/workspace/firefox-scan-build/js/xpconnect/src -I /var/lib/jenkins/workspace/firefox-scan-build/js/xpconnect/wrappers -I /var/lib/jenkins/workspace/firefox-scan-build/layout/base -I /var/lib/jenkins/workspace/firefox-scan-build/layout/forms -I /var/lib/jenkins/workspace/firefox-scan-build/layout/generic -I /var/lib/jenkins/workspace/firefox-scan-build/layout/style -I /var/lib/jenkins/workspace/firefox-scan-build/layout/xul -I /var/lib/jenkins/workspace/firefox-scan-build/netwerk/base -I /var/lib/jenkins/workspace/firefox-scan-build/netwerk/protocol/http -I /var/lib/jenkins/workspace/firefox-scan-build/netwerk/url-classifier -I /var/lib/jenkins/workspace/firefox-scan-build/parser/htmlparser -I /var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl -I /var/lib/jenkins/workspace/firefox-scan-build/third_party/xsimd/include -I /var/lib/jenkins/workspace/firefox-scan-build/widget -I /var/lib/jenkins/workspace/firefox-scan-build/xpcom/ds -I /var/lib/jenkins/workspace/firefox-scan-build/netwerk/sctp/datachannel -I /var/lib/jenkins/workspace/firefox-scan-build/obj-x86_64-pc-linux-gnu/ipc/ipdl/_ipdlheaders -I /var/lib/jenkins/workspace/firefox-scan-build/ipc/chromium/src -I /var/lib/jenkins/workspace/firefox-scan-build/obj-x86_64-pc-linux-gnu/dist/include -I /var/lib/jenkins/workspace/firefox-scan-build/obj-x86_64-pc-linux-gnu/dist/include/nspr -I /var/lib/jenkins/workspace/firefox-scan-build/obj-x86_64-pc-linux-gnu/dist/include/nss -D MOZILLA_CLIENT -I /usr/include/gtk-3.0 -I /usr/include/pango-1.0 -I /usr/include/glib-2.0 -I /usr/lib/x86_64-linux-gnu/glib-2.0/include -I /usr/include/harfbuzz -I /usr/include/freetype2 -I /usr/include/libpng16 -I /usr/include/libmount -I /usr/include/blkid -I /usr/include/fribidi -I /usr/include/cairo -I /usr/include/pixman-1 -I /usr/include/gdk-pixbuf-2.0 -I /usr/include/x86_64-linux-gnu -I /usr/include/webp -I /usr/include/gio-unix-2.0 -I /usr/include/cloudproviders -I /usr/include/atk-1.0 -I /usr/include/at-spi2-atk/2.0 -I /usr/include/at-spi-2.0 -I /usr/include/dbus-1.0 -I /usr/lib/x86_64-linux-gnu/dbus-1.0/include -I /usr/include/gtk-3.0/unix-print -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/13/../../../../include/c++/13 -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/13/../../../../include/x86_64-linux-gnu/c++/13 -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/13/../../../../include/c++/13/backward -internal-isystem /usr/lib/llvm-18/lib/clang/18/include -internal-isystem /usr/local/include -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/13/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-error=tautological-type-limit-compare -Wno-invalid-offsetof -Wno-range-loop-analysis -Wno-deprecated-anon-enum-enum-conversion -Wno-deprecated-enum-enum-conversion -Wno-deprecated-this-capture -Wno-inline-new-delete -Wno-error=deprecated-declarations -Wno-error=array-bounds -Wno-error=free-nonheap-object -Wno-error=atomic-alignment -Wno-error=deprecated-builtins -Wno-psabi -Wno-error=builtin-macro-redefined -Wno-vla-cxx-extension -Wno-unknown-warning-option -fdeprecated-macro -ferror-limit 19 -stack-protector 2 -fstack-clash-protection -ftrivial-auto-var-init=pattern -fno-rtti -fgnuc-version=4.2.1 -fno-aligned-allocation -vectorize-loops -vectorize-slp -analyzer-checker optin.performance.Padding -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/scan-build-2024-05-16-034744-15991-1 -x c++ Unified_cpp_dom_base3.cpp
1/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2/* vim: set ts=8 sts=2 et sw=2 tw=80: */
3/* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6
7#include "Location.h"
8#include "nsIScriptObjectPrincipal.h"
9#include "nsIScriptContext.h"
10#include "nsDocShellLoadState.h"
11#include "nsIWebNavigation.h"
12#include "nsIOService.h"
13#include "nsIURL.h"
14#include "nsIJARURI.h"
15#include "nsIURIMutator.h"
16#include "nsNetUtil.h"
17#include "nsCOMPtr.h"
18#include "nsEscape.h"
19#include "nsPresContext.h"
20#include "nsError.h"
21#include "nsReadableUtils.h"
22#include "nsJSUtils.h"
23#include "nsContentUtils.h"
24#include "nsDocShell.h"
25#include "nsGlobalWindowOuter.h"
26#include "nsPIDOMWindowInlines.h"
27#include "mozilla/Likely.h"
28#include "nsCycleCollectionParticipant.h"
29#include "mozilla/BasePrincipal.h"
30#include "mozilla/Components.h"
31#include "mozilla/NullPrincipal.h"
32#include "mozilla/ServoStyleConsts.h"
33#include "mozilla/StaticPrefs_dom.h"
34#include "mozilla/Unused.h"
35#include "mozilla/dom/Document.h"
36#include "mozilla/dom/DocumentInlines.h"
37#include "mozilla/dom/FragmentDirective.h"
38#include "mozilla/dom/LocationBinding.h"
39#include "mozilla/dom/ScriptSettings.h"
40#include "ReferrerInfo.h"
41
42namespace mozilla::dom {
43
44Location::Location(nsPIDOMWindowInner* aWindow)
45 : mCachedHash(VoidString()), mInnerWindow(aWindow) {
46 BrowsingContext* bc = GetBrowsingContext();
47 if (bc) {
48 bc->LocationCreated(this);
49 }
50}
51
52Location::~Location() {
53 if (isInList()) {
54 remove();
55 }
56}
57
58// QueryInterface implementation for Location
59NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Location)nsresult Location::QueryInterface(const nsIID& aIID, void
** aInstancePtr) { do { if (!(aInstancePtr)) { NS_DebugBreak(
NS_DEBUG_ASSERTION, "QueryInterface requires a non-NULL destination!"
, "aInstancePtr", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 59); MOZ_PretendNoReturn(); } } while (0); nsISupports* foundInterface
; if (TopThreeWordsEquals( aIID, (nsXPCOMCycleCollectionParticipant
::COMTypeInfo<nsXPCOMCycleCollectionParticipant, void>::
kIID), (nsCycleCollectionISupports::COMTypeInfo<nsCycleCollectionISupports
, void>::kIID)) && (LowWordEquals(aIID, (nsXPCOMCycleCollectionParticipant
::COMTypeInfo<nsXPCOMCycleCollectionParticipant, void>::
kIID)) || LowWordEquals(aIID, (nsCycleCollectionISupports::COMTypeInfo
<nsCycleCollectionISupports, void>::kIID)))) { if (LowWordEquals
(aIID, (nsXPCOMCycleCollectionParticipant::COMTypeInfo<nsXPCOMCycleCollectionParticipant
, void>::kIID))) { *aInstancePtr = Location::cycleCollection
::GetParticipant(); return NS_OK; } if (LowWordEquals(aIID, (
nsCycleCollectionISupports::COMTypeInfo<nsCycleCollectionISupports
, void>::kIID))) { *aInstancePtr = Location::cycleCollection
::Upcast(this); return NS_OK; } foundInterface = nullptr; } else
60 NS_WRAPPERCACHE_INTERFACE_MAP_ENTRYif (aIID.Equals((nsWrapperCache::COMTypeInfo<nsWrapperCache
, void>::kIID))) { *aInstancePtr = static_cast<nsWrapperCache
*>(this); return NS_OK; } else
61 NS_INTERFACE_MAP_ENTRY(nsISupports)if (aIID.Equals(mozilla::detail::kImplementedIID<std::remove_reference_t
<decltype(*this)>, nsISupports>)) foundInterface = static_cast
<nsISupports*>(this); else
62NS_INTERFACE_MAP_ENDfoundInterface = 0; nsresult status; if (!foundInterface) { do
{ static_assert( mozilla::detail::AssertionConditionType<
decltype(!aIID.Equals((nsISupports::COMTypeInfo<nsISupports
, void>::kIID)))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!aIID.Equals((nsISupports::COMTypeInfo
<nsISupports, void>::kIID))))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("!aIID.Equals((nsISupports::COMTypeInfo<nsISupports, void>::kIID))"
, "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 62); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!aIID.Equals((nsISupports::COMTypeInfo<nsISupports, void>::kIID))"
")"); do { *((volatile int*)__null) = 62; __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); status = NS_NOINTERFACE
; } else { (foundInterface)->AddRef(); status = NS_OK; } *
aInstancePtr = foundInterface; return status; }
63
64NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(Location, mInnerWindow)static_assert(std::is_base_of<nsWrapperCache, Location>
::value, "Class should inherit nsWrapperCache"); Location::cycleCollection
Location::_cycleCollectorGlobal( nsCycleCollectionParticipant
::FlagMaybeSingleZoneJSHolder); void Location::cycleCollection
::Trace( void* p, const TraceCallbacks& aCallbacks, void*
aClosure) { Location* tmp = DowncastCCParticipant<Location
>(p); TraceWrapper(p, aCallbacks, aClosure); (void)tmp; } void
Location::cycleCollection::TraceWrapper( void* p, const TraceCallbacks
& aCallbacks, void* aClosure) { Location* tmp = DowncastCCParticipant
<Location>(p); tmp->TraceWrapper(aCallbacks, aClosure
); } void Location::cycleCollection::Unlink(void* p) { Location
* tmp = DowncastCCParticipant<Location>(p); ImplCycleCollectionUnlink
(tmp->mInnerWindow); tmp->ReleaseWrapper(p); (void)tmp;
} nsresult Location::cycleCollection::TraverseNative( void* p
, nsCycleCollectionTraversalCallback& cb) { Location* tmp
= DowncastCCParticipant<Location>(p); cb.DescribeRefCountedNode
(tmp->mRefCnt.get(), "Location"); ImplCycleCollectionTraverse
(cb, tmp->mInnerWindow, "mInnerWindow", 0); (void)tmp; return
NS_OK; }
65
66NS_IMPL_CYCLE_COLLECTING_ADDREF(Location)MozExternalRefCountType Location::AddRef(void) { static_assert
(!std::is_destructible_v<Location>, "Reference-counted class "
"Location" " should not have a public destructor. " "Make this class's destructor non-public"
); do { static_assert( mozilla::detail::AssertionConditionType
<decltype(int32_t(mRefCnt) >= 0)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(int32_t(mRefCnt) >= 0))),
0))) { do { } while (false); MOZ_ReportAssertionFailure("int32_t(mRefCnt) >= 0"
" (" "illegal refcnt" ")", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 66); AnnotateMozCrashReason("MOZ_ASSERT" "(" "int32_t(mRefCnt) >= 0"
") (" "illegal refcnt" ")"); do { *((volatile int*)__null) =
66; __attribute__((nomerge)) ::abort(); } while (false); } }
while (false); _mOwningThread.AssertOwnership("Location" " not thread-safe"
); nsISupports* base = Location::cycleCollection::Upcast(this
); nsrefcnt count = mRefCnt.incr(base); NS_LogAddRef((this), (
count), ("Location"), (uint32_t)(sizeof(*this))); return count
; }
67NS_IMPL_CYCLE_COLLECTING_RELEASE(Location)MozExternalRefCountType Location::Release(void) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(int32_t
(mRefCnt) > 0)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(int32_t(mRefCnt) > 0))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("int32_t(mRefCnt) > 0"
" (" "dup release" ")", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 67); AnnotateMozCrashReason("MOZ_ASSERT" "(" "int32_t(mRefCnt) > 0"
") (" "dup release" ")"); do { *((volatile int*)__null) = 67
; __attribute__((nomerge)) ::abort(); } while (false); } } while
(false); _mOwningThread.AssertOwnership("Location" " not thread-safe"
); nsISupports* base = Location::cycleCollection::Upcast(this
); nsrefcnt count = mRefCnt.decr(base); NS_LogRelease((this),
(count), ("Location")); return count; } void Location::DeleteCycleCollectable
(void) { delete (this); }
68
69BrowsingContext* Location::GetBrowsingContext() {
70 return mInnerWindow ? mInnerWindow->GetBrowsingContext() : nullptr;
71}
72
73nsIDocShell* Location::GetDocShell() {
74 if (BrowsingContext* bc = GetBrowsingContext()) {
75 return bc->GetDocShell();
76 }
77 return nullptr;
78}
79
80nsresult Location::GetURI(nsIURI** aURI, bool aGetInnermostURI) {
81 *aURI = nullptr;
82
83 nsIDocShell* docShell = GetDocShell();
84 if (!docShell) {
85 return NS_OK;
86 }
87
88 nsIWebNavigation* webNav = nsDocShell::Cast(docShell);
89
90 nsCOMPtr<nsIURI> uri;
91 nsresult rv = webNav->GetCurrentURI(getter_AddRefs(uri));
92 NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
"result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 92); return rv; } } while (false)
;
93
94 // It is valid for docshell to return a null URI. Don't try to fixup
95 // if this happens.
96 if (!uri) {
97 return NS_OK;
98 }
99
100 if (aGetInnermostURI) {
101 nsCOMPtr<nsIJARURI> jarURI(do_QueryInterface(uri));
102 while (jarURI) {
103 jarURI->GetJARFile(getter_AddRefs(uri));
104 jarURI = do_QueryInterface(uri);
105 }
106 }
107
108 NS_ASSERTION(uri, "nsJARURI screwed up?")do { if (!(uri)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "nsJARURI screwed up?"
, "uri", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 108); MOZ_PretendNoReturn(); } } while (0)
;
109
110 // Remove the fragment directive from the url hash.
111 FragmentDirective::ParseAndRemoveFragmentDirectiveFromFragment(uri);
112 nsCOMPtr<nsIURI> exposableURI = net::nsIOService::CreateExposableURI(uri);
113 exposableURI.forget(aURI);
114 return NS_OK;
115}
116
117void Location::GetHash(nsAString& aHash, nsIPrincipal& aSubjectPrincipal,
118 ErrorResult& aRv) {
119 if (!CallerSubsumes(&aSubjectPrincipal)) {
120 aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
121 return;
122 }
123
124 if (!mCachedHash.IsVoid()) {
125 aHash = mCachedHash;
126 return;
127 }
128
129 aHash.SetLength(0);
130
131 nsCOMPtr<nsIURI> uri;
132 aRv = GetURI(getter_AddRefs(uri));
133 if (NS_WARN_IF(aRv.Failed())NS_warn_if_impl(aRv.Failed(), "aRv.Failed()", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 133)
|| !uri) {
134 return;
135 }
136
137 nsAutoCString ref;
138
139 aRv = uri->GetRef(ref);
140 if (NS_WARN_IF(aRv.Failed())NS_warn_if_impl(aRv.Failed(), "aRv.Failed()", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 140)
) {
141 return;
142 }
143
144 if (!ref.IsEmpty()) {
145 aHash.Assign(char16_t('#'));
146 AppendUTF8toUTF16(ref, aHash);
147 }
148
149 mCachedHash = aHash;
150}
151
152void Location::SetHash(const nsAString& aHash, nsIPrincipal& aSubjectPrincipal,
153 ErrorResult& aRv) {
154 if (!CallerSubsumes(&aSubjectPrincipal)) {
155 aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
156 return;
157 }
158
159 NS_ConvertUTF16toUTF8 hash(aHash);
160 if (hash.IsEmpty() || hash.First() != char16_t('#')) {
161 hash.Insert(char16_t('#'), 0);
162 }
163
164 nsCOMPtr<nsIURI> uri;
165 aRv = GetURI(getter_AddRefs(uri));
166 if (NS_WARN_IF(aRv.Failed())NS_warn_if_impl(aRv.Failed(), "aRv.Failed()", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 166)
|| !uri) {
167 return;
168 }
169
170 aRv = NS_MutateURI(uri).SetRef(hash).Finalize(uri);
171 if (NS_WARN_IF(aRv.Failed())NS_warn_if_impl(aRv.Failed(), "aRv.Failed()", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 171)
|| !uri) {
172 return;
173 }
174
175 SetURI(uri, aSubjectPrincipal, aRv);
176}
177
178void Location::GetHost(nsAString& aHost, nsIPrincipal& aSubjectPrincipal,
179 ErrorResult& aRv) {
180 if (!CallerSubsumes(&aSubjectPrincipal)) {
181 aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
182 return;
183 }
184
185 aHost.Truncate();
186
187 nsCOMPtr<nsIURI> uri;
188 nsresult result;
189
190 result = GetURI(getter_AddRefs(uri), true);
191
192 if (uri) {
193 nsAutoCString hostport;
194
195 result = uri->GetHostPort(hostport);
196
197 if (NS_SUCCEEDED(result)((bool)(__builtin_expect(!!(!NS_FAILED_impl(result)), 1)))) {
198 AppendUTF8toUTF16(hostport, aHost);
199 }
200 }
201}
202
203void Location::SetHost(const nsAString& aHost, nsIPrincipal& aSubjectPrincipal,
204 ErrorResult& aRv) {
205 if (!CallerSubsumes(&aSubjectPrincipal)) {
206 aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
207 return;
208 }
209
210 nsCOMPtr<nsIURI> uri;
211 aRv = GetURI(getter_AddRefs(uri));
212 if (NS_WARN_IF(aRv.Failed())NS_warn_if_impl(aRv.Failed(), "aRv.Failed()", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 212)
|| !uri) {
213 return;
214 }
215
216 aRv =
217 NS_MutateURI(uri).SetHostPort(NS_ConvertUTF16toUTF8(aHost)).Finalize(uri);
218 if (NS_WARN_IF(aRv.Failed())NS_warn_if_impl(aRv.Failed(), "aRv.Failed()", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 218)
) {
219 return;
220 }
221
222 SetURI(uri, aSubjectPrincipal, aRv);
223}
224
225void Location::GetHostname(nsAString& aHostname,
226 nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
227 if (!CallerSubsumes(&aSubjectPrincipal)) {
228 aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
229 return;
230 }
231
232 aHostname.Truncate();
233
234 nsCOMPtr<nsIURI> uri;
235 GetURI(getter_AddRefs(uri), true);
236 if (uri) {
237 nsContentUtils::GetHostOrIPv6WithBrackets(uri, aHostname);
238 }
239}
240
241void Location::SetHostname(const nsAString& aHostname,
242 nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
243 if (!CallerSubsumes(&aSubjectPrincipal)) {
244 aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
245 return;
246 }
247
248 nsCOMPtr<nsIURI> uri;
249 aRv = GetURI(getter_AddRefs(uri));
250 if (NS_WARN_IF(aRv.Failed())NS_warn_if_impl(aRv.Failed(), "aRv.Failed()", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 250)
|| !uri) {
251 return;
252 }
253
254 aRv =
255 NS_MutateURI(uri).SetHost(NS_ConvertUTF16toUTF8(aHostname)).Finalize(uri);
256 if (NS_WARN_IF(aRv.Failed())NS_warn_if_impl(aRv.Failed(), "aRv.Failed()", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 256)
) {
257 return;
258 }
259
260 SetURI(uri, aSubjectPrincipal, aRv);
261}
262
263nsresult Location::GetHref(nsAString& aHref) {
264 aHref.Truncate();
265
266 nsCOMPtr<nsIURI> uri;
267 nsresult rv = GetURI(getter_AddRefs(uri));
268 if (NS_WARN_IF(NS_FAILED(rv))NS_warn_if_impl(((bool)(__builtin_expect(!!(NS_FAILED_impl(rv
)), 0))), "NS_FAILED(rv)", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 268)
|| !uri) {
269 return rv;
270 }
271
272 nsAutoCString uriString;
273 rv = uri->GetSpec(uriString);
274 if (NS_WARN_IF(NS_FAILED(rv))NS_warn_if_impl(((bool)(__builtin_expect(!!(NS_FAILED_impl(rv
)), 0))), "NS_FAILED(rv)", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 274)
) {
275 return rv;
276 }
277
278 AppendUTF8toUTF16(uriString, aHref);
279 return NS_OK;
280}
281
282void Location::GetOrigin(nsAString& aOrigin, nsIPrincipal& aSubjectPrincipal,
283 ErrorResult& aRv) {
284 if (!CallerSubsumes(&aSubjectPrincipal)) {
285 aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
286 return;
287 }
288
289 aOrigin.Truncate();
290
291 nsCOMPtr<nsIURI> uri;
292 aRv = GetURI(getter_AddRefs(uri), true);
293 if (NS_WARN_IF(aRv.Failed())NS_warn_if_impl(aRv.Failed(), "aRv.Failed()", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 293)
|| !uri) {
294 return;
295 }
296
297 nsAutoString origin;
298 aRv = nsContentUtils::GetWebExposedOriginSerialization(uri, origin);
299 if (NS_WARN_IF(aRv.Failed())NS_warn_if_impl(aRv.Failed(), "aRv.Failed()", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 299)
) {
300 return;
301 }
302
303 aOrigin = origin;
304}
305
306void Location::GetPathname(nsAString& aPathname,
307 nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
308 if (!CallerSubsumes(&aSubjectPrincipal)) {
309 aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
310 return;
311 }
312
313 aPathname.Truncate();
314
315 nsCOMPtr<nsIURI> uri;
316 aRv = GetURI(getter_AddRefs(uri));
317 if (NS_WARN_IF(aRv.Failed())NS_warn_if_impl(aRv.Failed(), "aRv.Failed()", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 317)
|| !uri) {
318 return;
319 }
320
321 nsAutoCString file;
322
323 aRv = uri->GetFilePath(file);
324 if (NS_WARN_IF(aRv.Failed())NS_warn_if_impl(aRv.Failed(), "aRv.Failed()", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 324)
) {
325 return;
326 }
327
328 AppendUTF8toUTF16(file, aPathname);
329}
330
331void Location::SetPathname(const nsAString& aPathname,
332 nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
333 if (!CallerSubsumes(&aSubjectPrincipal)) {
334 aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
335 return;
336 }
337
338 nsCOMPtr<nsIURI> uri;
339 aRv = GetURI(getter_AddRefs(uri));
340 if (NS_WARN_IF(aRv.Failed())NS_warn_if_impl(aRv.Failed(), "aRv.Failed()", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 340)
|| !uri) {
341 return;
342 }
343
344 nsresult rv = NS_MutateURI(uri)
345 .SetFilePath(NS_ConvertUTF16toUTF8(aPathname))
346 .Finalize(uri);
347 if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
348 return;
349 }
350
351 SetURI(uri, aSubjectPrincipal, aRv);
352}
353
354void Location::GetPort(nsAString& aPort, nsIPrincipal& aSubjectPrincipal,
355 ErrorResult& aRv) {
356 if (!CallerSubsumes(&aSubjectPrincipal)) {
357 aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
358 return;
359 }
360
361 aPort.SetLength(0);
362
363 nsCOMPtr<nsIURI> uri;
364 aRv = GetURI(getter_AddRefs(uri), true);
365 if (NS_WARN_IF(aRv.Failed())NS_warn_if_impl(aRv.Failed(), "aRv.Failed()", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 365)
|| !uri) {
366 return;
367 }
368
369 int32_t port;
370 nsresult result = uri->GetPort(&port);
371
372 // Don't propagate this exception to caller
373 if (NS_SUCCEEDED(result)((bool)(__builtin_expect(!!(!NS_FAILED_impl(result)), 1))) && -1 != port) {
374 nsAutoString portStr;
375 portStr.AppendInt(port);
376 aPort.Append(portStr);
377 }
378}
379
380void Location::SetPort(const nsAString& aPort, nsIPrincipal& aSubjectPrincipal,
381 ErrorResult& aRv) {
382 if (!CallerSubsumes(&aSubjectPrincipal)) {
383 aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
384 return;
385 }
386
387 nsCOMPtr<nsIURI> uri;
388 aRv = GetURI(getter_AddRefs(uri));
389 if (NS_WARN_IF(aRv.Failed() || !uri)NS_warn_if_impl(aRv.Failed() || !uri, "aRv.Failed() || !uri",
"/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 389)
) {
390 return;
391 }
392
393 // perhaps use nsReadingIterators at some point?
394 NS_ConvertUTF16toUTF8 portStr(aPort);
395 const char* buf = portStr.get();
396 int32_t port = -1;
397
398 if (!portStr.IsEmpty() && buf) {
399 if (*buf == ':') {
400 port = atol(buf + 1);
401 } else {
402 port = atol(buf);
403 }
404 }
405
406 aRv = NS_MutateURI(uri).SetPort(port).Finalize(uri);
407 if (NS_WARN_IF(aRv.Failed())NS_warn_if_impl(aRv.Failed(), "aRv.Failed()", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 407)
) {
408 return;
409 }
410
411 SetURI(uri, aSubjectPrincipal, aRv);
412}
413
414void Location::GetProtocol(nsAString& aProtocol,
415 nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
416 if (!CallerSubsumes(&aSubjectPrincipal)) {
417 aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
418 return;
419 }
420
421 aProtocol.SetLength(0);
422
423 nsCOMPtr<nsIURI> uri;
424 aRv = GetURI(getter_AddRefs(uri));
425 if (NS_WARN_IF(aRv.Failed())NS_warn_if_impl(aRv.Failed(), "aRv.Failed()", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 425)
|| !uri) {
426 return;
427 }
428
429 nsAutoCString protocol;
430
431 aRv = uri->GetScheme(protocol);
432 if (NS_WARN_IF(aRv.Failed())NS_warn_if_impl(aRv.Failed(), "aRv.Failed()", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 432)
) {
433 return;
434 }
435
436 CopyASCIItoUTF16(protocol, aProtocol);
437 aProtocol.Append(char16_t(':'));
438}
439
440void Location::SetProtocol(const nsAString& aProtocol,
441 nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
442 if (!CallerSubsumes(&aSubjectPrincipal)) {
443 aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
444 return;
445 }
446
447 nsCOMPtr<nsIURI> uri;
448 aRv = GetURI(getter_AddRefs(uri));
449 if (NS_WARN_IF(aRv.Failed())NS_warn_if_impl(aRv.Failed(), "aRv.Failed()", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 449)
|| !uri) {
450 return;
451 }
452
453 nsAString::const_iterator start, end;
454 aProtocol.BeginReading(start);
455 aProtocol.EndReading(end);
456 nsAString::const_iterator iter(start);
457 Unused << FindCharInReadable(':', iter, end);
458
459 nsresult rv = NS_MutateURI(uri)
460 .SetScheme(NS_ConvertUTF16toUTF8(Substring(start, iter)))
461 .Finalize(uri);
462 if (NS_WARN_IF(NS_FAILED(rv))NS_warn_if_impl(((bool)(__builtin_expect(!!(NS_FAILED_impl(rv
)), 0))), "NS_FAILED(rv)", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 462)
) {
463 // Oh, I wish nsStandardURL returned NS_ERROR_MALFORMED_URI for _all_ the
464 // malformed cases, not just some of them!
465 aRv.Throw(NS_ERROR_DOM_SYNTAX_ERR);
466 return;
467 }
468
469 nsAutoCString newSpec;
470 aRv = uri->GetSpec(newSpec);
471 if (NS_WARN_IF(aRv.Failed())NS_warn_if_impl(aRv.Failed(), "aRv.Failed()", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 471)
) {
472 return;
473 }
474 // We may want a new URI class for the new URI, so recreate it:
475 rv = NS_NewURI(getter_AddRefs(uri), newSpec);
476 if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
477 if (rv == NS_ERROR_MALFORMED_URI) {
478 rv = NS_ERROR_DOM_SYNTAX_ERR;
479 }
480
481 aRv.Throw(rv);
482 return;
483 }
484
485 if (!uri->SchemeIs("http") && !uri->SchemeIs("https")) {
486 // No-op, per spec.
487 return;
488 }
489
490 SetURI(uri, aSubjectPrincipal, aRv);
491}
492
493void Location::GetSearch(nsAString& aSearch, nsIPrincipal& aSubjectPrincipal,
494 ErrorResult& aRv) {
495 if (!CallerSubsumes(&aSubjectPrincipal)) {
496 aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
497 return;
498 }
499
500 aSearch.SetLength(0);
501
502 nsCOMPtr<nsIURI> uri;
503 nsresult result = NS_OK;
504
505 result = GetURI(getter_AddRefs(uri));
Value stored to 'result' is never read
506
507 nsCOMPtr<nsIURL> url(do_QueryInterface(uri));
508
509 if (url) {
510 nsAutoCString search;
511
512 result = url->GetQuery(search);
513
514 if (NS_SUCCEEDED(result)((bool)(__builtin_expect(!!(!NS_FAILED_impl(result)), 1))) && !search.IsEmpty()) {
515 aSearch.Assign(char16_t('?'));
516 AppendUTF8toUTF16(search, aSearch);
517 }
518 }
519}
520
521void Location::SetSearch(const nsAString& aSearch,
522 nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
523 if (!CallerSubsumes(&aSubjectPrincipal)) {
524 aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
525 return;
526 }
527
528 nsCOMPtr<nsIURI> uri;
529 aRv = GetURI(getter_AddRefs(uri));
530 nsCOMPtr<nsIURL> url(do_QueryInterface(uri));
531 if (NS_WARN_IF(aRv.Failed())NS_warn_if_impl(aRv.Failed(), "aRv.Failed()", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 531)
|| !url) {
532 return;
533 }
534
535 aRv =
536 NS_MutateURI(uri).SetQuery(NS_ConvertUTF16toUTF8(aSearch)).Finalize(uri);
537 if (NS_WARN_IF(aRv.Failed())NS_warn_if_impl(aRv.Failed(), "aRv.Failed()", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 537)
) {
538 return;
539 }
540
541 SetURI(uri, aSubjectPrincipal, aRv);
542}
543
544void Location::Reload(bool aForceget, nsIPrincipal& aSubjectPrincipal,
545 ErrorResult& aRv) {
546 if (!CallerSubsumes(&aSubjectPrincipal)) {
547 aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
548 return;
549 }
550
551 RefPtr<nsDocShell> docShell(nsDocShell::Cast(GetDocShell()));
552 if (!docShell) {
553 return aRv.Throw(NS_ERROR_FAILURE);
554 }
555
556 RefPtr<BrowsingContext> bc = GetBrowsingContext();
557 if (!bc || bc->IsDiscarded()) {
558 return;
559 }
560
561 CallerType callerType = aSubjectPrincipal.IsSystemPrincipal()
562 ? CallerType::System
563 : CallerType::NonSystem;
564
565 nsresult rv = bc->CheckLocationChangeRateLimit(callerType);
566 if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
567 aRv.Throw(rv);
568 return;
569 }
570
571 uint32_t reloadFlags = nsIWebNavigation::LOAD_FLAGS_NONE;
572
573 if (aForceget) {
574 reloadFlags = nsIWebNavigation::LOAD_FLAGS_BYPASS_CACHE |
575 nsIWebNavigation::LOAD_FLAGS_BYPASS_PROXY;
576 }
577
578 rv = docShell->Reload(reloadFlags);
579 if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0))) && rv != NS_BINDING_ABORTED) {
580 // NS_BINDING_ABORTED is returned when we attempt to reload a POST result
581 // and the user says no at the "do you want to reload?" prompt. Don't
582 // propagate this one back to callers.
583 return aRv.Throw(rv);
584 }
585}
586
587void Location::Assign(const nsAString& aUrl, nsIPrincipal& aSubjectPrincipal,
588 ErrorResult& aRv) {
589 if (!CallerSubsumes(&aSubjectPrincipal)) {
590 aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
591 return;
592 }
593
594 DoSetHref(aUrl, aSubjectPrincipal, false, aRv);
595}
596
597bool Location::CallerSubsumes(nsIPrincipal* aSubjectPrincipal) {
598 MOZ_ASSERT(aSubjectPrincipal)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aSubjectPrincipal)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aSubjectPrincipal))), 0))) {
do { } while (false); MOZ_ReportAssertionFailure("aSubjectPrincipal"
, "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 598); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aSubjectPrincipal"
")"); do { *((volatile int*)__null) = 598; __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
;
599
600 BrowsingContext* bc = GetBrowsingContext();
601 if (MOZ_UNLIKELY(!bc)(__builtin_expect(!!(!bc), 0)) || MOZ_UNLIKELY(bc->IsDiscarded())(__builtin_expect(!!(bc->IsDiscarded()), 0))) {
602 // Per spec, operations on a Location object with a discarded BC are no-ops,
603 // not security errors, so we need to return true from the access check and
604 // let the caller do its own discarded docShell check.
605 return true;
606 }
607 if (MOZ_UNLIKELY(!bc->IsInProcess())(__builtin_expect(!!(!bc->IsInProcess()), 0))) {
608 return false;
609 }
610
611 // Get the principal associated with the location object. Note that this is
612 // the principal of the page which will actually be navigated, not the
613 // principal of the Location object itself. This is why we need this check
614 // even though we only allow limited cross-origin access to Location objects
615 // in general.
616 nsPIDOMWindowOuter* outer = bc->GetDOMWindow();
617 MOZ_DIAGNOSTIC_ASSERT(outer)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(outer)>::isValid, "invalid assertion condition");
if ((__builtin_expect(!!(!(!!(outer))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("outer", "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 617); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "outer"
")"); do { *((volatile int*)__null) = 617; __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
;
618 if (MOZ_UNLIKELY(!outer)(__builtin_expect(!!(!outer), 0))) return false;
619
620 nsIScriptObjectPrincipal* sop = nsGlobalWindowOuter::Cast(outer);
621 bool subsumes = false;
622 nsresult rv = aSubjectPrincipal->SubsumesConsideringDomain(
623 sop->GetPrincipal(), &subsumes);
624 NS_ENSURE_SUCCESS(rv, false)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
"result 0x%" "X" "%s%s%s", "rv", "false", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/var/lib/jenkins/workspace/firefox-scan-build/dom/base/Location.cpp"
, 624); return false; } } while (false)
;
625 return subsumes;
626}
627
628JSObject* Location::WrapObject(JSContext* aCx,
629 JS::Handle<JSObject*> aGivenProto) {
630 return Location_Binding::Wrap(aCx, this, aGivenProto);
631}
632
633void Location::ClearCachedValues() { mCachedHash = VoidString(); }
634
635} // namespace mozilla::dom