[转]Use the IDA and LLDB explore WebCore C + + class inheritance
2024-08-26 13:37:51
原文：http://www.phonesdevelopers.com/1781016/
The surgery class named PluginWidgetIOS use lldb can get:
- (lldb) image lookup -r -s PluginWidgetIOS
- 7 symbols match the regular expression 'PluginWidgetIOS' in /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.1.sdk/System/Library/PrivateFrameworks/WebKit.framework/WebKit:
- Address: WebKit[0x0003a5a0] (WebKit.TEXT.text + 231680)
- Summary: WebKit
PluginWidgetIOS::~PluginWidgetIOS() Address: WebKit[0x0003a5b0] (WebKit.__TEXT.__text + 231696) </span>PluginWidgetIOS::~PluginWidgetIOS() Address: WebKit[0x0003a6f0] (WebKit.TEXT.text + 232016)
</li>
<li class="alt" style="border-style: none none none solid; border-left-width: 3px; border-left-color: #6ce26c; list-style: decimal-leading-zero outside; color: inherit; line-height: 18px; margin: 0px !important; padding: 0px 3px 0px 10px !important;" data-iceapw="8" data-iceapc="1">
<span style="margin: 0px; padding: 0px; border: none; color: black; background-color: inherit;" data-iceapw="8"> Summary: WebKit - Summary: WebKit
PluginWidgetIOS::platformLayer() const Address: WebKit[0x0003a750] (WebKit.__TEXT.__text + 232112) </span>PluginWidgetIOS::willProvidePluginLayer() const Address: WebKit[0x0003a7b0] (WebKit.TEXT.text + 232208)
</li>
<li class="alt" style="border-style: none none none solid; border-left-width: 3px; border-left-color: #6ce26c; list-style: decimal-leading-zero outside; color: inherit; line-height: 18px; margin: 0px !important; padding: 0px 3px 0px 10px !important;" data-iceapw="9" data-iceapc="1">
<span style="margin: 0px; padding: 0px; border: none; color: black; background-color: inherit;" data-iceapw="9"> Summary: WebKit - Summary: WebKit
PluginWidgetIOS::attachPluginLayer() Address: WebKit[0x0003a810] (WebKit.__TEXT.__text + 232304) </span>PluginWidgetIOS::detachPluginLayer() Address: WebKit[0x001335e0] (WebKit.DATA.data + 560)
</li>
<li class="alt" style="border-style: none none none solid; border-left-width: 3px; border-left-color: #6ce26c; list-style: decimal-leading-zero outside; color: inherit; line-height: 18px; margin: 0px !important; padding: 0px 3px 0px 10px !important;" data-iceapw="8" data-iceapc="1">
<span style="margin: 0px; padding: 0px; border: none; color: black; background-color: inherit;" data-iceapw="8"> Summary: WebKit - Summary: vtable for PluginWidgetIOS
Useful information:
- Address: WebKit[0x001335e0] (WebKit.DATA.data + 560)
- Summary: vtable for PluginWidgetIOS
IDA Open WebCore static library, goto (shortcuts g) vtable address where 0x1335e0, you can see:
- data:001335E0 ; `vtable for'PluginWidgetIOS
- data:001335E0 ZTV15PluginWidgetIOS db 0 ; DATA XREF: nlsymbolptr:ZTV15PluginWidgetIOSptro
- data:001335E1 db 0
- data:001335E2 db 0
- data:001335E3 db 0
- data:001335E4 db 0
- data:001335E5 db 0
- data:001335E6 db 0
- data:001335E7 db 0
- data:001335E8 dd offset ZN15PluginWidgetIOSD1Ev ; PluginWidgetIOS::~PluginWidgetIOS()
- data:001335EC dd offset ZN15PluginWidgetIOSD0Ev ; PluginWidgetIOS::~PluginWidgetIOS()
- data:001335F0 dd offset ZN7WebCore6Widget12setFrameRectERKNS7IntRectE ; WebCore::Widget::setFrameRect(WebCore::IntRect const&)
- data:001335F4 dd offset ZN7WebCore6Widget5paintEPNS15GraphicsContextERKNS7IntRectE ; WebCore::Widget::paint(WebCore::GraphicsContext ,WebCore::IntRect const&)
- data:001335F8 dd offset ZN12PluginWidget14invalidateRectERKN7WebCore7IntRectE ; PluginWidget::invalidateRect(WebCore::IntRect const&)
- data:001335FC dd offset ZN7WebCore6Widget8setFocusEb ; WebCore::Widget::setFocus(bool)
- data:00133600 dd offset ZN7WebCore6Widget4showEv ; WebCore::Widget::show(void)
- data:00133604 dd offset ZN7WebCore6Widget4hideEv ; WebCore::Widget::hide(void)
- data:00133608 dd offset ZN7WebCore6Widget16setParentVisibleEb ; WebCore::Widget::setParentVisible(bool)
- data:0013360C dd offset ZNK7WebCore6Widget11isFrameViewEv ; WebCore::Widget::isFrameView(void)
- data:00133610 dd offset ZNK7WebCore6Widget12isPluginViewEv ; WebCore::Widget::isPluginView(void)
- data:00133614 dd offset ZNK7WebCore14PluginViewBase16isPluginViewBaseEv ; WebCore::PluginViewBase::isPluginViewBase(void)
- data:00133618 dd offset ZNK7WebCore6Widget11isScrollbarEv ; WebCore::Widget::isScrollbar(void)
- data:0013361C dd offset ZN7WebCore6Widget9setParentEPNS_10ScrollViewE ; WebCore::Widget::setParent(WebCore::ScrollView )
- data:00133620 dd offset ZN7WebCore6Widget11handleEventEPNS5EventE ; WebCore::Widget::handleEvent(WebCore::Event *)
- data:00133624 dd offset ZN7WebCore6Widget12notifyWidgetENS18WidgetNotificationE ; WebCore::Widget::notifyWidget(WebCore::WidgetNotification)
- data:00133628 dd offset ZN7WebCore6Widget17frameRectsChangedEv ; WebCore::Widget::frameRectsChanged(void)
- data:0013362C dd offset ZN7WebCore6Widget22widgetPositionsUpdatedEv ; WebCore::Widget::widgetPositionsUpdated(void)
- data:00133630 dd offset ZN7WebCore6Widget25transformsAffectFrameRectEv ; WebCore::Widget::transformsAffectFrameRect(void)
- data:00133634 dd offset ZNK7WebCore6Widget23convertToContainingViewERKNS7IntRectE ; WebCore::Widget::convertToContainingView(WebCore::IntRect const&)
- data:00133638 dd offset ZNK7WebCore6Widget25convertFromContainingViewERKNS7IntRectE ; WebCore::Widget::convertFromContainingView(WebCore::IntRect const&)
- data:0013363C dd offset ZNK7WebCore6Widget23convertToContainingViewERKNS8IntPointE ; WebCore::Widget::convertToContainingView(WebCore::IntPoint const&)
- data:00133640 dd offset ZNK7WebCore6Widget25convertFromContainingViewERKNS8IntPointE ; WebCore::Widget::convertFromContainingView(WebCore::IntPoint const&)
- data:00133644 dd offset ZNK7WebCore6Widget13axObjectCacheEv ; WebCore::Widget::axObjectCache(void)
- data:00133648 dd offset ZNK15PluginWidgetIOS13platformLayerEv ; PluginWidgetIOS::platformLayer(void)
- data:0013364C dd offset ZNK15PluginWidgetIOS22willProvidePluginLayerEv ; PluginWidgetIOS::willProvidePluginLayer(void)
- data:00133650 dd offset ZN15PluginWidgetIOS17attachPluginLayerEv ; PluginWidgetIOS::attachPluginLayer(void)
- data:00133654 dd offset ZN15PluginWidgetIOS17detachPluginLayerEv ; PluginWidgetIOS::detachPluginLayer(void)
- data:00133658 dd offset ZN7WebCore14PluginViewBase12scriptObjectEPN3JSC14JSGlobalObjectE ; WebCore::PluginViewBase::scriptObject(JSC::JSGlobalObject *)
- data:0013365C dd offset ZN7WebCore14PluginViewBase27privateBrowsingStateChangedEb ; WebCore::PluginViewBase::privateBrowsingStateChanged(bool)
- data:00133660 dd offset ZN7WebCore14PluginViewBase12getFormValueERN3WTF6StringE ; WebCore::PluginViewBase::getFormValue(WTF::String &)
- data:00133664 dd offset ZN7WebCore14PluginViewBase6scrollENS15ScrollDirectionENS17ScrollGranularityE ; WebCore::PluginViewBase::scroll(WebCore::ScrollDirection,WebCore::ScrollGranularity)
- data:00133668 dd offset ZN7WebCore14PluginViewBase19horizontalScrollbarEv ; WebCore::PluginViewBase::horizontalScrollbar(void)
- data:0013366C dd offset ZN7WebCore14PluginViewBase17verticalScrollbarEv ; WebCore::PluginViewBase::verticalScrollbar(void)
- data:00133670 dd offset ZN7WebCore14PluginViewBase16wantsWheelEventsEv ; WebCore::PluginViewBase::wantsWheelEvents(void)
- __data:00133674 align 10h
This is virtual function table PluginWidgetIOS. You can see from the comment after the semicolon function directly perform address point to the Widget, PluginWidget, PluginViewBase the function can the know PluginWidgetIOS is their direct or indirect subclass.
Reuse of the lldb image lookup these three classes, you can see the inheritance chain:
PluginWidgetIOS-> PluginViewBase-> PluginWidget-> Widget
The because the virtual list PluginWidget does not appear PluginViewBase the the Widget virtual table does not appear PluginWidget and PluginViewBase. Of course, these three classes in the open source can find inheritance.
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