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crashtesting: "use" loop in moz325427-1.svg

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Change-Id: I6ea2aaa5ca857d89342b9d18bd4cbedbeeea2b2f
This commit is contained in:
Caolán McNamara 2016-12-07 10:24:16 +00:00
parent 1d752159f4
commit 62283fed20
1 changed files with 29 additions and 19 deletions
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48
filter/source/svg/svgreader.cxx
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@ -189,6 +189,33 @@ struct AnnotatingVisitor
writeStyle(xElem,nTagId);
}
bool IsAncestorId(const uno::Reference<xml::dom::XNode>& xParentNode, const OUString& rValue)
{
bool bSelfCycle = false;
if (xParentNode.is())
{
if (xParentNode->hasAttributes())
{
const uno::Reference<xml::dom::XNamedNodeMap> xParentAttributes = xParentNode->getAttributes();
const sal_Int32 nFooNumAttrs(xParentAttributes->getLength());
for (sal_Int32 i=0; i < nFooNumAttrs; ++i)
{
const sal_Int32 nTokenId(getTokenId(xParentAttributes->item(i)->getNodeName()));
if (XML_ID == nTokenId)
{
OUString sParentID = xParentAttributes->item(i)->getNodeValue();
bSelfCycle = sParentID == rValue;
break;
}
}
}
if (!bSelfCycle)
bSelfCycle = IsAncestorId(xParentNode->getParentNode(), rValue);
}
return bSelfCycle;
}
void operator()( const uno::Reference<xml::dom::XElement>& xElem,
const uno::Reference<xml::dom::XNamedNodeMap>& xAttributes )
{
@ -294,27 +321,10 @@ struct AnnotatingVisitor
bool bFound = aFound != maElementIdMap.end();
if (bFound)
{
bool bSelfCycle = false;
uno::Reference<xml::dom::XNode> xParentNode(xElem->getParentNode());
if (xParentNode.is() && xParentNode->hasAttributes())
{
const uno::Reference<xml::dom::XNamedNodeMap> xParentAttributes = xParentNode->getAttributes();
const sal_Int32 nFooNumAttrs(xParentAttributes->getLength());
for (sal_Int32 i=0; i < nFooNumAttrs; ++i)
{
const sal_Int32 nTokenId(getTokenId(xParentAttributes->item(i)->getNodeName()));
if (XML_ID == nTokenId)
{
OUString sParentID = xParentAttributes->item(i)->getNodeValue();
bSelfCycle = sParentID == sValue;
break;
}
}
}
const bool bSelfCycle = IsAncestorId(xElem->getParentNode(), sValue);
if (bSelfCycle)
{
SAL_WARN("filter.svg", "\"use\" declaration with target of ancestor node, causing use cycle");
//drop this invalid self-referencing "use" node
maElementIdMap.erase(aFound);
bFound = false;