// Deserialize properties part.
private void ParseCorePropertyPart(PackagePart part)
{
XmlReaderSettings xrs = new XmlReaderSettings();
xrs.NameTable = _nameTable;
using (Stream stream = part.GetStream(FileMode.Open, FileAccess.Read))
// Create a reader that uses _nameTable so as to use the set of tag literals
// in effect as a set of atomic identifiers.
using (XmlReader reader = XmlReader.Create(stream, xrs))
{
//This method expects the reader to be in ReadState.Initial.
//It will make the first read call.
PackagingUtilities.PerformInitialReadAndVerifyEncoding(reader);
//Note: After the previous method call the reader should be at the first tag in the markup.
//MoveToContent - Skips over the following - ProcessingInstruction, DocumentType, Comment, Whitespace, or SignificantWhitespace
//If the reader is currently at a content node then this function call is a no-op
if (reader.MoveToContent() != XmlNodeType.Element ||
(object)reader.NamespaceURI != PackageXmlStringTable.GetXmlStringAsObject(PackageXmlEnum.PackageCorePropertiesNamespace) ||
(object)reader.LocalName != PackageXmlStringTable.GetXmlStringAsObject(PackageXmlEnum.CoreProperties))
{
throw new XmlException(SR.CorePropertiesElementExpected,
null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)reader).LinePosition);
}
// The schema is closed and defines no attributes on the root element.
if (PackagingUtilities.GetNonXmlnsAttributeCount(reader) != 0)
{
throw new XmlException(SR.Format(SR.PropertyWrongNumbOfAttribsDefinedOn, reader.Name),
null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)reader).LinePosition);
}
// Iterate through property elements until EOF. Note the proper closing of all
// open tags is checked by the reader itself.
// This loop deals only with depth-1 start tags. Handling of element content
// is delegated to dedicated functions.
int attributesCount;
while (reader.Read() && reader.MoveToContent() != XmlNodeType.None)
{
// Ignore end-tags. We check element errors on opening tags.
if (reader.NodeType == XmlNodeType.EndElement)
{
continue;
}
// Any content markup that is not an element here is unexpected.
if (reader.NodeType != XmlNodeType.Element)
{
throw new XmlException(SR.PropertyStartTagExpected,
null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)reader).LinePosition);
}
// Any element below the root should open at level 1 exclusively.
if (reader.Depth != 1)
{
throw new XmlException(SR.NoStructuredContentInsideProperties,
null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)reader).LinePosition);
}
attributesCount = PackagingUtilities.GetNonXmlnsAttributeCount(reader);
// Property elements can occur in any order (xsd:all).
object localName = reader.LocalName;
PackageXmlEnum xmlStringIndex = PackageXmlStringTable.GetEnumOf(localName);
String valueType = PackageXmlStringTable.GetValueType(xmlStringIndex);
if (Array.IndexOf(s_validProperties, xmlStringIndex) == -1) // An unexpected element is an error.
{
throw new XmlException(
SR.Format(SR.InvalidPropertyNameInCorePropertiesPart, reader.LocalName),
null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)reader).LinePosition);
}
// Any element not in the valid core properties namespace is unexpected.
// The following is an object comparison, not a string comparison.
if ((object)reader.NamespaceURI != PackageXmlStringTable.GetXmlStringAsObject(PackageXmlStringTable.GetXmlNamespace(xmlStringIndex)))
{
throw new XmlException(SR.UnknownNamespaceInCorePropertiesPart,
null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)reader).LinePosition);
}
if (String.CompareOrdinal(valueType, "String") == 0)
{
// The schema is closed and defines no attributes on this type of element.
if (attributesCount != 0)
{
throw new XmlException(SR.Format(SR.PropertyWrongNumbOfAttribsDefinedOn, reader.Name),
null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)reader).LinePosition);
}
RecordNewBinding(xmlStringIndex, GetStringData(reader), true /*initializing*/, reader);
}
else if (String.CompareOrdinal(valueType, "DateTime") == 0)
{
int allowedAttributeCount = (object)reader.NamespaceURI ==
PackageXmlStringTable.GetXmlStringAsObject(PackageXmlEnum.DublinCoreTermsNamespace)
? 1 : 0;
// The schema is closed and defines no attributes on this type of element.
if (attributesCount != allowedAttributeCount)
{
throw new XmlException(SR.Format(SR.PropertyWrongNumbOfAttribsDefinedOn, reader.Name),
null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)reader).LinePosition);
}
if (allowedAttributeCount != 0)
{
ValidateXsiType(reader,
PackageXmlStringTable.GetXmlStringAsObject(PackageXmlEnum.DublinCoreTermsNamespace),
W3cdtf);
}
RecordNewBinding(xmlStringIndex, GetDateData(reader), true /*initializing*/, reader);
}
else // An unexpected element is an error.
{
Debug.Assert(false, "Unknown value type for properties");
}
}
}
}
/// <summary>
/// Parse PackageRelationship Stream
/// </summary>
/// <param name="part">relationship part</param>
/// <exception cref="XmlException">Thrown if XML is malformed</exception>
private void ParseRelationshipPart(PackagePart part)
{
//We can safely open the stream as FileAccess.Read, as this code
//should only be invoked if the Package has been opened in Read or ReadWrite mode.
Debug.Assert(_package.FileOpenAccess == FileAccess.Read || _package.FileOpenAccess == FileAccess.ReadWrite,
"This method should only be called when FileAccess is Read or ReadWrite");
using (Stream s = part.GetStream(FileMode.Open, FileAccess.Read))
{
// load from the relationship part associated with the given part
using (XmlReader baseReader = XmlReader.Create(s))
{
using (XmlCompatibilityReader reader = new XmlCompatibilityReader(baseReader, s_relationshipKnownNamespaces))
{
//This method expects the reader to be in ReadState.Initial.
//It will make the first read call.
PackagingUtilities.PerformInitialReadAndVerifyEncoding(baseReader);
//Note: After the previous method call the reader should be at the first tag in the markup.
//MoveToContent - Skips over the following - ProcessingInstruction, DocumentType, Comment, Whitespace, or SignificantWhitespace
//If the reader is currently at a content node then this function call is a no-op
reader.MoveToContent();
// look for our tag and namespace pair - throw if other elements are encountered
// Make sure that the current node read is an Element
if (reader.NodeType == XmlNodeType.Element &&
(reader.Depth == 0) &&
(string.CompareOrdinal(RelationshipsTagName, reader.LocalName) == 0) &&
(string.CompareOrdinal(PackagingUtilities.RelationshipNamespaceUri, reader.NamespaceURI) == 0))
{
ThrowIfXmlBaseAttributeIsPresent(reader);
//There should be a namespace Attribute present at this level.
//Also any other attribute on the <Relationships> tag is an error including xml: and xsi: attributes
if (PackagingUtilities.GetNonXmlnsAttributeCount(reader) > 0)
{
throw new XmlException(SR.RelationshipsTagHasExtraAttributes, null, reader.LineNumber, reader.LinePosition);
}
// start tag encountered for Relationships
// now parse individual Relationship tags
while (reader.Read())
{
//Skips over the following - ProcessingInstruction, DocumentType, Comment, Whitespace, or SignificantWhitespace
//If the reader is currently at a content node then this function call is a no-op
reader.MoveToContent();
//If MoveToContent() takes us to the end of the content
if (reader.NodeType == XmlNodeType.None)
{
continue;
}
if (reader.NodeType == XmlNodeType.Element &&
(reader.Depth == 1) &&
(string.CompareOrdinal(RelationshipTagName, reader.LocalName) == 0) &&
(string.CompareOrdinal(PackagingUtilities.RelationshipNamespaceUri, reader.NamespaceURI) == 0))
{
ThrowIfXmlBaseAttributeIsPresent(reader);
int expectedAttributesCount = 3;
string?targetModeAttributeValue = reader.GetAttribute(TargetModeAttributeName);
if (targetModeAttributeValue != null)
{
expectedAttributesCount++;
}
//check if there are expected number of attributes.
//Also any other attribute on the <Relationship> tag is an error including xml: and xsi: attributes
if (PackagingUtilities.GetNonXmlnsAttributeCount(reader) == expectedAttributesCount)
{
ProcessRelationshipAttributes(reader);
//Skip the EndElement for Relationship
if (!reader.IsEmptyElement)
{
ProcessEndElementForRelationshipTag(reader);
}
}
else
{
throw new XmlException(SR.RelationshipTagDoesntMatchSchema, null, reader.LineNumber, reader.LinePosition);
}
}
else
if (!(string.CompareOrdinal(RelationshipsTagName, reader.LocalName) == 0 && (reader.NodeType == XmlNodeType.EndElement)))
{
throw new XmlException(SR.UnknownTagEncountered, null, reader.LineNumber, reader.LinePosition);
}
}
}
else
{
throw new XmlException(SR.ExpectedRelationshipsElementTag, null, reader.LineNumber, reader.LinePosition);
}
}
}
}
}
private void ParseContentTypesFile(System.Collections.ObjectModel.ReadOnlyCollection <ZipArchiveEntry> zipFiles)
{
// Find the content type stream, allowing for interleaving. Naming collisions
// (as between an atomic and an interleaved part) will result in an exception being thrown.
Stream?s = OpenContentTypeStream(zipFiles);
// Allow non-existent content type stream.
if (s == null)
{
return;
}
XmlReaderSettings xrs = new XmlReaderSettings();
xrs.IgnoreWhitespace = true;
using (s)
using (XmlReader reader = XmlReader.Create(s, xrs))
{
//This method expects the reader to be in ReadState.Initial.
//It will make the first read call.
PackagingUtilities.PerformInitialReadAndVerifyEncoding(reader);
//Note: After the previous method call the reader should be at the first tag in the markup.
//MoveToContent - Skips over the following - ProcessingInstruction, DocumentType, Comment, Whitespace, or SignificantWhitespace
//If the reader is currently at a content node then this function call is a no-op
reader.MoveToContent();
// look for our root tag and namespace pair - ignore others in case of version changes
// Make sure that the current node read is an Element
if ((reader.NodeType == XmlNodeType.Element) &&
(reader.Depth == 0) &&
(string.CompareOrdinal(reader.NamespaceURI, TypesNamespaceUri) == 0) &&
(string.CompareOrdinal(reader.Name, TypesTagName) == 0))
{
//There should be a namespace Attribute present at this level.
//Also any other attribute on the <Types> tag is an error including xml: and xsi: attributes
if (PackagingUtilities.GetNonXmlnsAttributeCount(reader) > 0)
{
throw new XmlException(SR.TypesTagHasExtraAttributes, null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)reader).LinePosition);
}
// start tag encountered
// now parse individual Default and Override tags
while (reader.Read())
{
//Skips over the following - ProcessingInstruction, DocumentType, Comment, Whitespace, or SignificantWhitespace
//If the reader is currently at a content node then this function call is a no-op
reader.MoveToContent();
//If MoveToContent() takes us to the end of the content
if (reader.NodeType == XmlNodeType.None)
{
continue;
}
// Make sure that the current node read is an element
// Currently we expect the Default and Override Tag at Depth 1
if (reader.NodeType == XmlNodeType.Element &&
reader.Depth == 1 &&
(string.CompareOrdinal(reader.NamespaceURI, TypesNamespaceUri) == 0) &&
(string.CompareOrdinal(reader.Name, DefaultTagName) == 0))
{
ProcessDefaultTagAttributes(reader);
}
else if (reader.NodeType == XmlNodeType.Element &&
reader.Depth == 1 &&
(string.CompareOrdinal(reader.NamespaceURI, TypesNamespaceUri) == 0) &&
(string.CompareOrdinal(reader.Name, OverrideTagName) == 0))
{
ProcessOverrideTagAttributes(reader);
}
else if (reader.NodeType == XmlNodeType.EndElement && reader.Depth == 0 && string.CompareOrdinal(reader.Name, TypesTagName) == 0)
{
continue;
}
else
{
throw new XmlException(SR.TypesXmlDoesNotMatchSchema, null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)reader).LinePosition);
}
}
}
else
{
throw new XmlException(SR.TypesElementExpected, null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)reader).LinePosition);
}
}
}
