diff options
Diffstat (limited to 'xmlsecurity/source/helper/ooxmlsecparser.cxx')
| -rw-r--r-- | xmlsecurity/source/helper/ooxmlsecparser.cxx | 1352 |
1 files changed, 1352 insertions, 0 deletions
diff --git a/xmlsecurity/source/helper/ooxmlsecparser.cxx b/xmlsecurity/source/helper/ooxmlsecparser.cxx new file mode 100644 index 000000000..2692190cc --- /dev/null +++ b/xmlsecurity/source/helper/ooxmlsecparser.cxx @@ -0,0 +1,1352 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + + +#include "ooxmlsecparser.hxx" +#include <xmlsignaturehelper.hxx> +#include <xsecctl.hxx> + +#include <xmloff/xmlnamespace.hxx> +#include <xmloff/xmltkmap.hxx> +#include <xmloff/xmlimp.hxx> + +#include <com/sun/star/xml/sax/SAXException.hpp> + +#include <sal/log.hxx> + +using namespace com::sun::star; + +class OOXMLSecParser::Context +{ + protected: + friend class OOXMLSecParser; + OOXMLSecParser & m_rParser; + private: + std::optional<SvXMLNamespaceMap> m_pOldNamespaceMap; + + public: + Context(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap) + : m_rParser(rParser) + , m_pOldNamespaceMap(std::move(pOldNamespaceMap)) + { + } + + virtual ~Context() = default; + + virtual void StartElement( + css::uno::Reference<css::xml::sax::XAttributeList> const& /*xAttrs*/) + { + } + + virtual void EndElement() + { + } + + virtual std::unique_ptr<Context> CreateChildContext( + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_uInt16 const /*nNamespace*/, OUString const& /*rName*/); + + virtual void Characters(OUString const& /*rChars*/) + { + } +}; + +// it's possible that an unsupported element has an Id attribute and a +// ds:Reference digesting it - probably this means XSecController needs to know +// about it. (For known elements, the Id attribute is only processed according +// to the schema.) +class OOXMLSecParser::UnknownContext + : public OOXMLSecParser::Context +{ + public: + UnknownContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + { + } + + virtual void StartElement( + css::uno::Reference<css::xml::sax::XAttributeList> const& xAttrs) override + { + m_rParser.HandleIdAttr(xAttrs); + } +}; + +auto OOXMLSecParser::Context::CreateChildContext( + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_uInt16 const /*nNamespace*/, OUString const& /*rName*/) +-> std::unique_ptr<Context> +{ + // default: create new base context + return std::make_unique<UnknownContext>(m_rParser, std::move(pOldNamespaceMap)); +} + +/** +note: anything in ds:Object should be trusted *only* if there is a ds:Reference + to it so it is signed (exception: the xades:EncapsulatedX509Certificate). + ds:SignedInfo precedes all ds:Object. + + There may be multiple ds:Signature for purpose of counter-signatures + but the way XAdES describes these, only the ds:SignatureValue element + would be referenced, so requiring a ds:Reference for anything in + ds:Object shouldn't cause issues. + */ +class OOXMLSecParser::ReferencedContextImpl + : public OOXMLSecParser::Context +{ + protected: + bool m_isReferenced; + + public: + ReferencedContextImpl(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + bool const isReferenced) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + , m_isReferenced(isReferenced) + { + } + + OUString CheckIdAttrReferenced(css::uno::Reference<css::xml::sax::XAttributeList> const& xAttrs) + { + OUString const id(m_rParser.HandleIdAttr(xAttrs)); + if (!id.isEmpty() && m_rParser.m_pXSecController->haveReferenceForId(id)) + { + m_isReferenced = true; + } + return id; + } +}; + +class OOXMLSecParser::DsX509CertificateContext + : public OOXMLSecParser::Context +{ + private: + OUString & m_rValue; + + public: + DsX509CertificateContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + OUString& rValue) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + , m_rValue(rValue) + { + } + + virtual void Characters(OUString const& rChars) override + { + m_rValue += rChars; + } +}; + +class OOXMLSecParser::DsX509SerialNumberContext + : public OOXMLSecParser::Context +{ + private: + OUString & m_rValue; + + public: + DsX509SerialNumberContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + OUString& rValue) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + , m_rValue(rValue) + { + } + + virtual void Characters(OUString const& rChars) override + { + m_rValue += rChars; + } +}; + +class OOXMLSecParser::DsX509IssuerNameContext + : public OOXMLSecParser::Context +{ + private: + OUString & m_rValue; + + public: + DsX509IssuerNameContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + OUString& rValue) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + , m_rValue(rValue) + { + } + + virtual void Characters(OUString const& rChars) override + { + m_rValue += rChars; + } +}; + +class OOXMLSecParser::DsX509IssuerSerialContext + : public OOXMLSecParser::Context +{ + private: + OUString & m_rX509IssuerName; + OUString & m_rX509SerialNumber; + + public: + DsX509IssuerSerialContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + OUString& rIssuerName, OUString& rSerialNumber) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + , m_rX509IssuerName(rIssuerName) + , m_rX509SerialNumber(rSerialNumber) + { + } + + virtual std::unique_ptr<Context> CreateChildContext( + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_uInt16 const nNamespace, OUString const& rName) override + { + if (nNamespace == XML_NAMESPACE_DS && rName == "X509IssuerName") + { + return std::make_unique<DsX509IssuerNameContext>(m_rParser, std::move(pOldNamespaceMap), m_rX509IssuerName); + } + if (nNamespace == XML_NAMESPACE_DS && rName == "X509SerialNumber") + { + return std::make_unique<DsX509SerialNumberContext>(m_rParser, std::move(pOldNamespaceMap), m_rX509SerialNumber); + } + // missing: ds:X509SKI, ds:X509SubjectName, ds:X509CRL + return OOXMLSecParser::Context::CreateChildContext(std::move(pOldNamespaceMap), nNamespace, rName); + } +}; + +/// can't be sure what is supposed to happen here because the spec is clear as mud +class OOXMLSecParser::DsX509DataContext + : public OOXMLSecParser::Context +{ + private: + // sigh... "No ordering is implied by the above constraints." + // so store the ball of mud in vectors and try to figure it out later. + std::vector<std::pair<OUString, OUString>> m_X509IssuerSerials; + std::vector<OUString> m_X509Certificates; + + public: + DsX509DataContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + { + } + + virtual void EndElement() override + { + m_rParser.m_pXSecController->setX509Data(m_X509IssuerSerials, m_X509Certificates); + } + + virtual std::unique_ptr<Context> CreateChildContext( + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_uInt16 const nNamespace, OUString const& rName) override + { + if (nNamespace == XML_NAMESPACE_DS && rName == "X509IssuerSerial") + { + m_X509IssuerSerials.emplace_back(); + return std::make_unique<DsX509IssuerSerialContext>(m_rParser, std::move(pOldNamespaceMap), m_X509IssuerSerials.back().first, m_X509IssuerSerials.back().second); + } + if (nNamespace == XML_NAMESPACE_DS && rName == "X509Certificate") + { + m_X509Certificates.emplace_back(); + return std::make_unique<DsX509CertificateContext>(m_rParser, std::move(pOldNamespaceMap), m_X509Certificates.back()); + } + // missing: ds:X509SKI, ds:X509SubjectName, ds:X509CRL + return OOXMLSecParser::Context::CreateChildContext(std::move(pOldNamespaceMap), nNamespace, rName); + } +}; + +class OOXMLSecParser::DsKeyInfoContext + : public OOXMLSecParser::Context +{ + public: + DsKeyInfoContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + { + } + + virtual void StartElement( + css::uno::Reference<css::xml::sax::XAttributeList> const& xAttrs) override + { + m_rParser.HandleIdAttr(xAttrs); + } + + virtual std::unique_ptr<Context> CreateChildContext( + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_uInt16 const nNamespace, OUString const& rName) override + { + if (nNamespace == XML_NAMESPACE_DS && rName == "X509Data") + { + return std::make_unique<DsX509DataContext>(m_rParser, std::move(pOldNamespaceMap)); + } + // missing: ds:PGPData + // missing: ds:KeyName, ds:KeyValue, ds:RetrievalMethod, ds:SPKIData, ds:MgmtData + // (old code would read ds:Transform inside ds:RetrievalMethod but + // presumably that was a bug) + return OOXMLSecParser::Context::CreateChildContext(std::move(pOldNamespaceMap), nNamespace, rName); + } + +}; + +class OOXMLSecParser::DsSignatureValueContext + : public OOXMLSecParser::Context +{ + private: + OUString m_Value; + + public: + DsSignatureValueContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + { + } + + virtual void StartElement( + css::uno::Reference<css::xml::sax::XAttributeList> const& xAttrs) override + { + m_rParser.HandleIdAttr(xAttrs); + } + + virtual void EndElement() override + { + m_rParser.m_pXSecController->setSignatureValue(m_Value); + } + + virtual void Characters(OUString const& rChars) override + { + m_Value += rChars; + } +}; + +class OOXMLSecParser::DsDigestValueContext + : public OOXMLSecParser::Context +{ + private: + OUString & m_rValue; + + public: + DsDigestValueContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + OUString & rValue) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + , m_rValue(rValue) + { + } + + virtual void StartElement( + css::uno::Reference<css::xml::sax::XAttributeList> const& /*xAttrs*/) override + { + m_rValue.clear(); + } + + virtual void Characters(OUString const& rChars) override + { + m_rValue += rChars; + } +}; + +class OOXMLSecParser::DsDigestMethodContext + : public OOXMLSecParser::Context +{ + private: + sal_Int32 & m_rReferenceDigestID; + + public: + DsDigestMethodContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_Int32& rReferenceDigestID) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + , m_rReferenceDigestID(rReferenceDigestID) + { + } + + virtual void StartElement( + css::uno::Reference<css::xml::sax::XAttributeList> const& xAttrs) override + { + OUString ouAlgorithm = xAttrs->getValueByName("Algorithm"); + + SAL_WARN_IF( ouAlgorithm.isEmpty(), "xmlsecurity.helper", "no Algorithm in Reference" ); + if (ouAlgorithm.isEmpty()) + return; + + SAL_WARN_IF( ouAlgorithm != ALGO_XMLDSIGSHA1 + && ouAlgorithm != ALGO_XMLDSIGSHA256 + && ouAlgorithm != ALGO_XMLDSIGSHA512, + "xmlsecurity.helper", "Algorithm neither SHA1, SHA256 nor SHA512"); + if (ouAlgorithm == ALGO_XMLDSIGSHA1) + m_rReferenceDigestID = css::xml::crypto::DigestID::SHA1; + else if (ouAlgorithm == ALGO_XMLDSIGSHA256) + m_rReferenceDigestID = css::xml::crypto::DigestID::SHA256; + else if (ouAlgorithm == ALGO_XMLDSIGSHA512) + m_rReferenceDigestID = css::xml::crypto::DigestID::SHA512; + else + m_rReferenceDigestID = 0; + } +}; + +class OOXMLSecParser::DsTransformContext + : public OOXMLSecParser::Context +{ + private: + bool & m_rIsC14N; + + public: + DsTransformContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + bool& rIsC14N) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + , m_rIsC14N(rIsC14N) + { + } + + virtual void StartElement( + css::uno::Reference<css::xml::sax::XAttributeList> const& xAttrs) override + { + OUString aAlgorithm = xAttrs->getValueByName("Algorithm"); + + if (aAlgorithm == ALGO_RELATIONSHIP) + { + m_rIsC14N = true; + } + } +}; + +class OOXMLSecParser::DsTransformsContext + : public OOXMLSecParser::Context +{ + private: + bool & m_rIsC14N; + + public: + DsTransformsContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + bool& rIsC14N) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + , m_rIsC14N(rIsC14N) + { + } + + virtual std::unique_ptr<Context> CreateChildContext( + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_uInt16 const nNamespace, OUString const& rName) override + { + if (nNamespace == XML_NAMESPACE_DS && rName == "Transform") + { + return std::make_unique<DsTransformContext>(m_rParser, std::move(pOldNamespaceMap), m_rIsC14N); + } + return OOXMLSecParser::Context::CreateChildContext(std::move(pOldNamespaceMap), nNamespace, rName); + } +}; + +class OOXMLSecParser::DsReferenceContext + : public OOXMLSecParser::Context +{ + private: + OUString m_URI; + OUString m_Type; + OUString m_DigestValue; + bool m_IsC14N = false; + // Relevant for ODF. The digest algorithm selected by the DigestMethod + // element's Algorithm attribute. @see css::xml::crypto::DigestID. + sal_Int32 m_nReferenceDigestID = css::xml::crypto::DigestID::SHA256; + + public: + DsReferenceContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + { + } + + virtual void StartElement( + css::uno::Reference<css::xml::sax::XAttributeList> const& xAttrs) override + { + m_rParser.HandleIdAttr(xAttrs); + + m_URI = xAttrs->getValueByName("URI"); + SAL_WARN_IF(m_URI.isEmpty(), "xmlsecurity.helper", "URI is empty"); + // Remember the type of this reference. + m_Type = xAttrs->getValueByName("Type"); + } + + virtual void EndElement() override + { + if (m_URI.startsWith("#")) + { + /* + * remove the first character '#' from the attribute value + */ + m_rParser.m_pXSecController->addReference(m_URI.copy(1), m_nReferenceDigestID, m_Type); + } + else + { + if (m_IsC14N) // this is determined by nested ds:Transform + { + m_rParser.m_pXSecController->addStreamReference(m_URI, false, m_nReferenceDigestID); + } + else + /* + * it must be an octet stream + */ + { + m_rParser.m_pXSecController->addStreamReference(m_URI, true, m_nReferenceDigestID); + } + } + + m_rParser.m_pXSecController->setDigestValue(m_nReferenceDigestID, m_DigestValue); + } + + virtual std::unique_ptr<Context> CreateChildContext( + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_uInt16 const nNamespace, OUString const& rName) override + { + if (nNamespace == XML_NAMESPACE_DS && rName == "Transforms") + { + return std::make_unique<DsTransformsContext>(m_rParser, std::move(pOldNamespaceMap), m_IsC14N); + } + if (nNamespace == XML_NAMESPACE_DS && rName == "DigestMethod") + { + return std::make_unique<DsDigestMethodContext>(m_rParser, std::move(pOldNamespaceMap), m_nReferenceDigestID); + } + if (nNamespace == XML_NAMESPACE_DS && rName == "DigestValue") + { + return std::make_unique<DsDigestValueContext>(m_rParser, std::move(pOldNamespaceMap), m_DigestValue); + } + return OOXMLSecParser::Context::CreateChildContext(std::move(pOldNamespaceMap), nNamespace, rName); + } +}; + +class OOXMLSecParser::DsSignatureMethodContext + : public OOXMLSecParser::Context +{ + public: + DsSignatureMethodContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + { + } + + virtual void StartElement( + css::uno::Reference<css::xml::sax::XAttributeList> const& xAttrs) override + { + OUString ouAlgorithm = xAttrs->getValueByName("Algorithm"); + if (ouAlgorithm == ALGO_ECDSASHA1 || ouAlgorithm == ALGO_ECDSASHA256 + || ouAlgorithm == ALGO_ECDSASHA512) + { + m_rParser.m_pXSecController->setSignatureMethod(svl::crypto::SignatureMethodAlgorithm::ECDSA); + } + } +}; + +class OOXMLSecParser::DsSignedInfoContext + : public OOXMLSecParser::Context +{ + public: + DsSignedInfoContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + { + } + + virtual void StartElement( + css::uno::Reference<css::xml::sax::XAttributeList> const& xAttrs) override + { + m_rParser.HandleIdAttr(xAttrs); + } + + virtual void EndElement() override + { + m_rParser.m_pXSecController->setReferenceCount(); + } + + virtual std::unique_ptr<Context> CreateChildContext( + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_uInt16 const nNamespace, OUString const& rName) override + { + if (nNamespace == XML_NAMESPACE_DS && rName == "SignatureMethod") + { + return std::make_unique<DsSignatureMethodContext>(m_rParser, std::move(pOldNamespaceMap)); + } + if (nNamespace == XML_NAMESPACE_DS && rName == "Reference") + { + return std::make_unique<DsReferenceContext>(m_rParser, std::move(pOldNamespaceMap)); + } + // missing: ds:CanonicalizationMethod + return OOXMLSecParser::Context::CreateChildContext(std::move(pOldNamespaceMap), nNamespace, rName); + } +}; + +class OOXMLSecParser::XadesCertDigestContext + : public OOXMLSecParser::Context +{ + private: + OUString & m_rDigestValue; + sal_Int32 & m_rReferenceDigestID; + + public: + XadesCertDigestContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + OUString& rDigestValue, sal_Int32& rReferenceDigestID) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + , m_rDigestValue(rDigestValue) + , m_rReferenceDigestID(rReferenceDigestID) + { + } + + virtual std::unique_ptr<Context> CreateChildContext( + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_uInt16 const nNamespace, OUString const& rName) override + { + if (nNamespace == XML_NAMESPACE_DS && rName == "DigestMethod") + { + return std::make_unique<DsDigestMethodContext>(m_rParser, std::move(pOldNamespaceMap), m_rReferenceDigestID); + } + if (nNamespace == XML_NAMESPACE_DS && rName == "DigestValue") + { + return std::make_unique<DsDigestValueContext>(m_rParser, std::move(pOldNamespaceMap), m_rDigestValue); + } + return OOXMLSecParser::Context::CreateChildContext(std::move(pOldNamespaceMap), nNamespace, rName); + } +}; + +class OOXMLSecParser::XadesCertContext + : public OOXMLSecParser::ReferencedContextImpl +{ + private: + sal_Int32 m_nReferenceDigestID = css::xml::crypto::DigestID::SHA1; + OUString m_CertDigest; + OUString m_X509IssuerName; + OUString m_X509SerialNumber; + + public: + XadesCertContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + bool const isReferenced) + : ReferencedContextImpl(rParser, std::move(pOldNamespaceMap), isReferenced) + { + } + + virtual void EndElement() override + { + if (m_isReferenced) + { + m_rParser.m_pXSecController->setX509CertDigest(m_CertDigest, m_nReferenceDigestID, m_X509IssuerName, m_X509SerialNumber); + } + else + { + SAL_INFO("xmlsecurity.helper", "ignoring unsigned xades:Cert"); + } + } + + virtual std::unique_ptr<Context> CreateChildContext( + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_uInt16 const nNamespace, OUString const& rName) override + { + if (nNamespace == XML_NAMESPACE_XADES132 && rName == "CertDigest") + { + return std::make_unique<XadesCertDigestContext>(m_rParser, std::move(pOldNamespaceMap), m_CertDigest, m_nReferenceDigestID); + } + if (nNamespace == XML_NAMESPACE_XADES132 && rName == "IssuerSerial") + { + return std::make_unique<DsX509IssuerSerialContext>(m_rParser, std::move(pOldNamespaceMap), m_X509IssuerName, m_X509SerialNumber); + } + return OOXMLSecParser::Context::CreateChildContext(std::move(pOldNamespaceMap), nNamespace, rName); + } +}; + +class OOXMLSecParser::XadesSigningCertificateContext + : public OOXMLSecParser::ReferencedContextImpl +{ + public: + XadesSigningCertificateContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + bool const isReferenced) + : ReferencedContextImpl(rParser, std::move(pOldNamespaceMap), isReferenced) + { + } + + virtual std::unique_ptr<Context> CreateChildContext( + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_uInt16 const nNamespace, OUString const& rName) override + { + if (nNamespace == XML_NAMESPACE_XADES132 && rName == "Cert") + { + return std::make_unique<XadesCertContext>(m_rParser, std::move(pOldNamespaceMap), m_isReferenced); + } + return OOXMLSecParser::Context::CreateChildContext(std::move(pOldNamespaceMap), nNamespace, rName); + } +}; + +class OOXMLSecParser::XadesSigningTimeContext + : public OOXMLSecParser::ReferencedContextImpl +{ + private: + OUString m_Value; + + public: + XadesSigningTimeContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + bool const isReferenced) + : ReferencedContextImpl(rParser, std::move(pOldNamespaceMap), isReferenced) + { + } + + virtual void EndElement() override + { + if (m_isReferenced) + { + m_rParser.m_pXSecController->setDate("", m_Value); + } + else + { + SAL_INFO("xmlsecurity.helper", "ignoring unsigned SigningTime"); + } + } + + virtual void Characters(OUString const& rChars) override + { + m_Value += rChars; + } +}; + +class OOXMLSecParser::XadesSignedSignaturePropertiesContext + : public OOXMLSecParser::ReferencedContextImpl +{ + public: + XadesSignedSignaturePropertiesContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + bool const isReferenced) + : ReferencedContextImpl(rParser, std::move(pOldNamespaceMap), isReferenced) + { + } + + virtual void StartElement( + css::uno::Reference<css::xml::sax::XAttributeList> const& xAttrs) override + { + CheckIdAttrReferenced(xAttrs); + } + + virtual std::unique_ptr<Context> CreateChildContext( + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_uInt16 const nNamespace, OUString const& rName) override + { + if (nNamespace == XML_NAMESPACE_XADES132 && rName == "SigningTime") + { + return std::make_unique<XadesSigningTimeContext>(m_rParser, std::move(pOldNamespaceMap), m_isReferenced); + } + if (nNamespace == XML_NAMESPACE_XADES132 && rName == "SigningCertificate") + { + return std::make_unique<XadesSigningCertificateContext>(m_rParser, std::move(pOldNamespaceMap), m_isReferenced); + } + // missing: xades:SignaturePolicyIdentifier, xades:SignatureProductionPlace, xades:SignerRole + return OOXMLSecParser::Context::CreateChildContext(std::move(pOldNamespaceMap), nNamespace, rName); + } +}; + +class OOXMLSecParser::XadesSignedPropertiesContext + : public OOXMLSecParser::ReferencedContextImpl +{ + public: + XadesSignedPropertiesContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + bool const isReferenced) + : ReferencedContextImpl(rParser, std::move(pOldNamespaceMap), isReferenced) + { + } + + virtual void StartElement( + css::uno::Reference<css::xml::sax::XAttributeList> const& xAttrs) override + { + CheckIdAttrReferenced(xAttrs); + } + + virtual std::unique_ptr<Context> CreateChildContext( + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_uInt16 const nNamespace, OUString const& rName) override + { + if (nNamespace == XML_NAMESPACE_XADES132 && rName == "SignedSignatureProperties") + { + return std::make_unique<XadesSignedSignaturePropertiesContext>(m_rParser, std::move(pOldNamespaceMap), m_isReferenced); + } + // missing: xades:SignedDataObjectProperties + return OOXMLSecParser::Context::CreateChildContext(std::move(pOldNamespaceMap), nNamespace, rName); + } +}; + +class OOXMLSecParser::XadesQualifyingPropertiesContext + : public OOXMLSecParser::ReferencedContextImpl +{ + public: + XadesQualifyingPropertiesContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + bool const isReferenced) + : ReferencedContextImpl(rParser, std::move(pOldNamespaceMap), isReferenced) + { + } + + virtual void StartElement( + css::uno::Reference<css::xml::sax::XAttributeList> const& xAttrs) override + { + CheckIdAttrReferenced(xAttrs); + } + + virtual std::unique_ptr<Context> CreateChildContext( + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_uInt16 const nNamespace, OUString const& rName) override + { + if (nNamespace == XML_NAMESPACE_XADES132 && rName == "SignedProperties") + { + return std::make_unique<XadesSignedPropertiesContext>(m_rParser, std::move(pOldNamespaceMap), m_isReferenced); + } + // missing: xades:UnsignedSignatureProperties + return OOXMLSecParser::Context::CreateChildContext(std::move(pOldNamespaceMap), nNamespace, rName); + } +}; + +class OOXMLSecParser::MsodigsigSetupIDContext + : public OOXMLSecParser::Context +{ + private: + OUString & m_rValue; + + public: + MsodigsigSetupIDContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + OUString& rValue) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + , m_rValue(rValue) + { + } + + virtual void Characters(OUString const& rChars) override + { + m_rValue += rChars; + } +}; + +class OOXMLSecParser::MsodigsigSignatureCommentsContext + : public OOXMLSecParser::Context +{ + private: + OUString & m_rValue; + + public: + MsodigsigSignatureCommentsContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + OUString& rValue) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + , m_rValue(rValue) + { + } + + virtual void Characters(OUString const& rChars) override + { + m_rValue += rChars; + } +}; + +class OOXMLSecParser::MsodigsigSignatureInfoV1Context + : public OOXMLSecParser::ReferencedContextImpl +{ + private: + OUString m_SetupID; + OUString m_SignatureComments; + + public: + MsodigsigSignatureInfoV1Context(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + bool const isReferenced) + : ReferencedContextImpl(rParser, std::move(pOldNamespaceMap), isReferenced) + { + } + + virtual void StartElement( + css::uno::Reference<css::xml::sax::XAttributeList> const& xAttrs) override + { + CheckIdAttrReferenced(xAttrs); + } + + virtual std::unique_ptr<Context> CreateChildContext( + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_uInt16 const nNamespace, OUString const& rName) override + { + if (nNamespace == XML_NAMESPACE_MSODIGSIG && rName == "SetupID") + { + return std::make_unique<MsodigsigSetupIDContext>(m_rParser, std::move(pOldNamespaceMap), m_SetupID); + } + if (nNamespace == XML_NAMESPACE_MSODIGSIG && rName == "SignatureComments") + { + return std::make_unique<MsodigsigSignatureCommentsContext>(m_rParser, std::move(pOldNamespaceMap), m_SignatureComments); + } + return OOXMLSecParser::Context::CreateChildContext(std::move(pOldNamespaceMap), nNamespace, rName); + } + + virtual void EndElement() override + { + if (m_isReferenced) + { + if (!m_SetupID.isEmpty()) + { + m_rParser.m_pXSecController->setSignatureLineId(m_SetupID); + } + if (!m_SignatureComments.isEmpty()) + { + m_rParser.m_pXSecController->setDescription("", m_SignatureComments); + + } + } + else + { + SAL_INFO("xmlsecurity.helper", "ignoring unsigned SignatureInfoV1"); + } + } +}; + +class OOXMLSecParser::MdssiValueContext + : public OOXMLSecParser::Context +{ + private: + OUString & m_rValue; + + public: + MdssiValueContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + OUString& rValue) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + , m_rValue(rValue) + { + } + + virtual void Characters(OUString const& rChars) override + { + m_rValue += rChars; + } +}; + +class OOXMLSecParser::MdssiSignatureTimeContext + : public OOXMLSecParser::Context +{ + private: + OUString & m_rValue; + + public: + MdssiSignatureTimeContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + OUString& rValue) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + , m_rValue(rValue) + { + } + + virtual std::unique_ptr<Context> CreateChildContext( + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_uInt16 const nNamespace, OUString const& rName) override + { + if (nNamespace == XML_NAMESPACE_MDSSI && rName == "Value") + { + return std::make_unique<MdssiValueContext>(m_rParser, std::move(pOldNamespaceMap), m_rValue); + } + return OOXMLSecParser::Context::CreateChildContext(std::move(pOldNamespaceMap), nNamespace, rName); + } +}; + + +class OOXMLSecParser::DsSignaturePropertyContext + : public OOXMLSecParser::ReferencedContextImpl +{ + private: + enum class SignatureProperty { Unknown, Date, Info }; + SignatureProperty m_Property = SignatureProperty::Unknown; + OUString m_Id; + OUString m_Value; + + public: + DsSignaturePropertyContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + bool const isReferenced) + : ReferencedContextImpl(rParser, std::move(pOldNamespaceMap), isReferenced) + { + } + + virtual void StartElement( + css::uno::Reference<css::xml::sax::XAttributeList> const& xAttrs) override + { + m_Id = CheckIdAttrReferenced(xAttrs); + } + + virtual void EndElement() override + { + if (m_isReferenced) + { + switch (m_Property) + { + case SignatureProperty::Unknown: + SAL_INFO("xmlsecurity.helper", "Unknown property in ds:Object ignored"); + break; + case SignatureProperty::Info: + break; // handled by child context + case SignatureProperty::Date: + m_rParser.m_pXSecController->setDate(m_Id, m_Value); + break; + } + } + else + { + SAL_INFO("xmlsecurity.helper", "ignoring unsigned SignatureProperty"); + } + } + + virtual std::unique_ptr<Context> CreateChildContext( + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_uInt16 const nNamespace, OUString const& rName) override + { + if (nNamespace == XML_NAMESPACE_MDSSI && rName == "SignatureTime") + { + m_Property = SignatureProperty::Date; + return std::make_unique<MdssiSignatureTimeContext>(m_rParser, std::move(pOldNamespaceMap), m_Value); + } + if (nNamespace == XML_NAMESPACE_MSODIGSIG && rName == "SignatureInfoV1") + { + return std::make_unique<MsodigsigSignatureInfoV1Context>(m_rParser, std::move(pOldNamespaceMap), m_isReferenced); + } + return OOXMLSecParser::Context::CreateChildContext(std::move(pOldNamespaceMap), nNamespace, rName); + } +}; + +class OOXMLSecParser::DsSignaturePropertiesContext + : public OOXMLSecParser::ReferencedContextImpl +{ + public: + DsSignaturePropertiesContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + bool const isReferenced) + : ReferencedContextImpl(rParser, std::move(pOldNamespaceMap), isReferenced) + { + } + + virtual void StartElement( + css::uno::Reference<css::xml::sax::XAttributeList> const& xAttrs) override + { + CheckIdAttrReferenced(xAttrs); + } + + virtual std::unique_ptr<Context> CreateChildContext( + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_uInt16 const nNamespace, OUString const& rName) override + { + if (nNamespace == XML_NAMESPACE_DS && rName == "SignatureProperty") + { + return std::make_unique<DsSignaturePropertyContext>(m_rParser, std::move(pOldNamespaceMap), m_isReferenced); + } + return OOXMLSecParser::Context::CreateChildContext(std::move(pOldNamespaceMap), nNamespace, rName); + } +}; + +class OOXMLSecParser::DsManifestContext + : public OOXMLSecParser::ReferencedContextImpl +{ + public: + DsManifestContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + bool const isReferenced) + : ReferencedContextImpl(rParser, std::move(pOldNamespaceMap), isReferenced) + { + } + + virtual void StartElement( + css::uno::Reference<css::xml::sax::XAttributeList> const& xAttrs) override + { + CheckIdAttrReferenced(xAttrs); + } + +#if 0 + ??? + virtual void EndElement() override + { + m_rParser.m_pXSecController->setReferenceCount(); + } +#endif + + virtual std::unique_ptr<Context> CreateChildContext( + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_uInt16 const nNamespace, OUString const& rName) override + { + if (nNamespace == XML_NAMESPACE_DS && rName == "Reference") + { + return std::make_unique<DsReferenceContext>(m_rParser, std::move(pOldNamespaceMap)); + } + // missing: ds:CanonicalizationMethod + return OOXMLSecParser::Context::CreateChildContext(std::move(pOldNamespaceMap), nNamespace, rName); + } +}; + +class OOXMLSecParser::DsObjectContext + : public OOXMLSecParser::ReferencedContextImpl +{ + enum class Mode { Default, ValidSignatureLineImage, InvalidSignatureLineImage }; + Mode m_Mode = Mode::Default; + OUString m_Value; + + public: + DsObjectContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap) + // init with "false" here - the Signature element can't be referenced by its child + : OOXMLSecParser::ReferencedContextImpl(rParser, std::move(pOldNamespaceMap), false) + { + } + + virtual void StartElement( + css::uno::Reference<css::xml::sax::XAttributeList> const& xAttrs) override + { + OUString const id(CheckIdAttrReferenced(xAttrs)); + if (id == "idValidSigLnImg") + { + m_Mode = Mode::ValidSignatureLineImage; + } + else if (id == "idInvalidSigLnImg") + { + m_Mode = Mode::InvalidSignatureLineImage; + } + } + + virtual void EndElement() override + { + switch (m_Mode) + { + case Mode::ValidSignatureLineImage: + if (m_isReferenced) + { + m_rParser.m_pXSecController->setValidSignatureImage(m_Value); + } + else + { + SAL_INFO("xmlsecurity.helper", "ignoring unsigned SignatureLineValidImage"); + } + break; + case Mode::InvalidSignatureLineImage: + if (m_isReferenced) + { + m_rParser.m_pXSecController->setInvalidSignatureImage(m_Value); + } + else + { + SAL_INFO("xmlsecurity.helper", "ignoring unsigned SignatureLineInvalidImage"); + } + break; + case Mode::Default: + break; + } + } + + virtual void Characters(OUString const& rChars) override + { + m_Value += rChars; + } + + virtual std::unique_ptr<Context> CreateChildContext( + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_uInt16 const nNamespace, OUString const& rName) override + { + if (nNamespace == XML_NAMESPACE_DS && rName == "SignatureProperties") + { + return std::make_unique<DsSignaturePropertiesContext>(m_rParser, std::move(pOldNamespaceMap), m_isReferenced); + } + if (nNamespace == XML_NAMESPACE_XADES132 && rName == "QualifyingProperties") + { + return std::make_unique<XadesQualifyingPropertiesContext>(m_rParser, std::move(pOldNamespaceMap), m_isReferenced); + } + if (nNamespace == XML_NAMESPACE_DS && rName == "Manifest") + { + return std::make_unique<DsManifestContext>(m_rParser, std::move(pOldNamespaceMap), m_isReferenced); + } + return OOXMLSecParser::Context::CreateChildContext(std::move(pOldNamespaceMap), nNamespace, rName); + } +}; + +class OOXMLSecParser::DsSignatureContext + : public OOXMLSecParser::Context +{ + public: + DsSignatureContext(OOXMLSecParser& rParser, + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap) + : OOXMLSecParser::Context(rParser, std::move(pOldNamespaceMap)) + { + } + + virtual void StartElement( + css::uno::Reference<css::xml::sax::XAttributeList> const& xAttrs) override + { + OUString const ouIdAttr(m_rParser.HandleIdAttr(xAttrs)); + m_rParser.m_rXMLSignatureHelper.StartVerifySignatureElement(); + m_rParser.m_pXSecController->addSignature(); + if (!ouIdAttr.isEmpty()) + { + m_rParser.m_pXSecController->setId( ouIdAttr ); + } + } + + virtual std::unique_ptr<Context> CreateChildContext( + std::optional<SvXMLNamespaceMap>&& pOldNamespaceMap, + sal_uInt16 const nNamespace, OUString const& rName) override + { + if (nNamespace == XML_NAMESPACE_DS && rName == "SignedInfo") + { + return std::make_unique<DsSignedInfoContext>(m_rParser, std::move(pOldNamespaceMap)); + } + if (nNamespace == XML_NAMESPACE_DS && rName == "SignatureValue") + { + return std::make_unique<DsSignatureValueContext>(m_rParser, std::move(pOldNamespaceMap)); + } + if (nNamespace == XML_NAMESPACE_DS && rName == "KeyInfo") + { + return std::make_unique<DsKeyInfoContext>(m_rParser, std::move(pOldNamespaceMap)); + } + if (nNamespace == XML_NAMESPACE_DS && rName == "Object") + { + return std::make_unique<DsObjectContext>(m_rParser, std::move(pOldNamespaceMap)); + } + return OOXMLSecParser::Context::CreateChildContext(std::move(pOldNamespaceMap), nNamespace, rName); + } +}; + + +OOXMLSecParser::OOXMLSecParser(XMLSignatureHelper& rXMLSignatureHelper, XSecController* pXSecController) + : m_pNamespaceMap(SvXMLNamespaceMap()) + , m_pXSecController(pXSecController) + ,m_rXMLSignatureHelper(rXMLSignatureHelper) +{ + using namespace xmloff::token; + m_pNamespaceMap->Add( GetXMLToken(XML_XML), GetXMLToken(XML_N_XML), XML_NAMESPACE_XML ); + m_pNamespaceMap->Add( "_ds", GetXMLToken(XML_N_DS), XML_NAMESPACE_DS ); + m_pNamespaceMap->Add( "_xades132", GetXMLToken(XML_N_XADES132), XML_NAMESPACE_XADES132); + m_pNamespaceMap->Add( "_xades141", GetXMLToken(XML_N_XADES141), XML_NAMESPACE_XADES141); + m_pNamespaceMap->Add( "_dc", GetXMLToken(XML_N_DC), XML_NAMESPACE_DC ); + m_pNamespaceMap->Add( "_mdssi", NS_MDSSI, XML_NAMESPACE_MDSSI ); + m_pNamespaceMap->Add( "_msodigsig", "http://schemas.microsoft.com/office/2006/digsig", XML_NAMESPACE_MSODIGSIG ); + m_pNamespaceMap->Add( "_office_libo", + GetXMLToken(XML_N_LO_EXT), XML_NAMESPACE_LO_EXT); +} + +OOXMLSecParser::~OOXMLSecParser() +{ +} + +OUString OOXMLSecParser::HandleIdAttr(css::uno::Reference<css::xml::sax::XAttributeList> const& xAttrs) +{ + OUString const aId = xAttrs->getValueByName("Id"); + if (!aId.isEmpty()) + { + m_pXSecController->collectToVerify(aId); + } + return aId; +} + +void SAL_CALL OOXMLSecParser::startDocument() +{ + if (m_xNextHandler.is()) + m_xNextHandler->startDocument(); +} + +void SAL_CALL OOXMLSecParser::endDocument() +{ + if (m_xNextHandler.is()) + m_xNextHandler->endDocument(); +} + +void SAL_CALL OOXMLSecParser::startElement(const OUString& rName, const uno::Reference<xml::sax::XAttributeList>& xAttribs) +{ + assert(m_pNamespaceMap); + std::optional<SvXMLNamespaceMap> pRewindMap( + SvXMLImport::processNSAttributes(m_pNamespaceMap, nullptr, xAttribs)); + + OUString localName; + sal_uInt16 const nPrefix(m_pNamespaceMap->GetKeyByAttrName(rName, &localName)); + + std::unique_ptr<Context> pContext; + + if (m_ContextStack.empty()) + { + if (nPrefix != XML_NAMESPACE_DS || localName != "Signature") + { + throw css::xml::sax::SAXException( + "xmlsecurity: unexpected root element", nullptr, + css::uno::Any()); + } + + pContext.reset(new DsSignatureContext(*this, std::move(pRewindMap))); + + } + else + { + pContext = m_ContextStack.top()->CreateChildContext( + std::move(pRewindMap), nPrefix, localName); + } + + m_ContextStack.push(std::move(pContext)); + + m_ContextStack.top()->StartElement(xAttribs); + + if (m_xNextHandler.is()) + { + m_xNextHandler->startElement(rName, xAttribs); + } + +} + +void SAL_CALL OOXMLSecParser::endElement(const OUString& rName) +{ + assert(!m_ContextStack.empty()); // this should be checked by sax parser? + + m_ContextStack.top()->EndElement(); + + if (m_xNextHandler.is()) + { + m_xNextHandler->endElement(rName); + } + + if (m_ContextStack.top()->m_pOldNamespaceMap) + { + m_pNamespaceMap = std::move(m_ContextStack.top()->m_pOldNamespaceMap); + } + m_ContextStack.pop(); +} + +void SAL_CALL OOXMLSecParser::characters(const OUString& rChars) +{ + assert(!m_ContextStack.empty()); // this should be checked by sax parser? + m_ContextStack.top()->Characters(rChars); + + if (m_xNextHandler.is()) + m_xNextHandler->characters(rChars); +} + +void SAL_CALL OOXMLSecParser::ignorableWhitespace(const OUString& rWhitespace) +{ + if (m_xNextHandler.is()) + m_xNextHandler->ignorableWhitespace(rWhitespace); +} + +void SAL_CALL OOXMLSecParser::processingInstruction(const OUString& rTarget, const OUString& rData) +{ + if (m_xNextHandler.is()) + m_xNextHandler->processingInstruction(rTarget, rData); +} + +void SAL_CALL OOXMLSecParser::setDocumentLocator(const uno::Reference<xml::sax::XLocator>& xLocator) +{ + if (m_xNextHandler.is()) + m_xNextHandler->setDocumentLocator(xLocator); +} + +void SAL_CALL OOXMLSecParser::initialize(const uno::Sequence<uno::Any>& rArguments) +{ + rArguments[0] >>= m_xNextHandler; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |