xmlsecurity/inc/xmlsignaturehelper.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #pragma once
  21
  22 #include <tools/link.hxx>
  23 #include <rtl/ustring.hxx>
  24 #include <rtl/ref.hxx>
  25 #include <svl/sigstruct.hxx>
  26 #include "xmlsecuritydllapi.h"
  27 #include "xmlsignaturehelper.hxx"
  28 #include "xsecctl.hxx"
  29
  30 #include <com/sun/star/security/XCertificate.hpp>
  31 #include <com/sun/star/xml/crypto/XSecurityEnvironment.hpp>
  32
  33 class DateTime;
  34 class UriBindingHelper;
  35
  36 namespace com::sun::star {
  37     namespace io {
  38         class XOutputStream;
  39         class XInputStream;
  40     }
  41     namespace embed { class XStorage; }
  42 }
  43
  44 namespace com::sun::star::graphic { class XGraphic; }
  45 namespace com::sun::star::uno { class XComponentContext; }
  46 namespace com::sun::star::xml::crypto { class XXMLSecurityContext; }
  47 namespace com::sun::star::xml::sax { class XDocumentHandler; }
  48 namespace com::sun::star::xml::sax { class XWriter; }
  49
  50 /**********************************************************
  51  XMLSignatureHelper
  52
  53  Helper class for the XML Security framework
  54
  55  Functions:
  56  1. help to create a security context;
  57  2. help to listen signature creation result;
  58  3. help to listen signature verify result;
  59  4. help to indicate which signature to verify.
  60
  61  **********************************************************/
  62
  63 class XMLSECURITY_DLLPUBLIC XMLSignatureHelper
  64 {
  65 private:
  66     css::uno::Reference< css::uno::XComponentContext > mxCtx;
  67     rtl::Reference<UriBindingHelper> mxUriBinding;
  68
  69     rtl::Reference<XSecController> mpXSecController;
  70     bool                        mbError;
  71     bool mbODFPre1_2;
  72     Link<LinkParamNone*,bool>   maStartVerifySignatureHdl;
  73
  74 private:
  75     XMLSignatureHelper(const XMLSignatureHelper&) = delete;
  76
  77 public:
  78     XMLSignatureHelper(const css::uno::Reference< css::uno::XComponentContext >& mrCtx );
  79     ~XMLSignatureHelper();
  80
  81     void StartVerifySignatureElement();
  82
  83     // Set the storage which should be used by the default UriBinding
  84     // Must be set before StartMission().
  85     //sODFVersion indicates  the ODF version
  86     void        SetStorage( const css::uno::Reference < css::embed::XStorage >& rxStorage, const OUString& sODFVersion );
  87
  88                 // Argument for the Link is a uno::Reference< xml::sax::XAttributeList >*
  89                 // Return 1 to verify, 0 to skip.
  90                 // Default handler will verify all.
  91     void        SetStartVerifySignatureHdl( const Link<LinkParamNone*,bool>& rLink );
  92
  93                 // After signing/verifying, get information about signatures
  94     SignatureInformation  GetSignatureInformation( sal_Int32 nSecurityId ) const;
  95     SignatureInformations GetSignatureInformations() const;
  96     /// ImplVerifySignature calls this to figure out which X509Data is the
  97     /// signing certificate and update the internal state with the result.
  98     /// @return
  99     ///    A sequence with the signing certificate at the back on success.
 100     ///    An empty sequence on failure.
 101     std::vector<css::uno::Reference<css::security::XCertificate>>
 102     CheckAndUpdateSignatureInformation(
 103         css::uno::Reference<css::xml::crypto::XSecurityEnvironment> const& xSecEnv,
 104         SignatureInformation const& rInfo);
 105
 106                 // See XSecController for documentation
 107     void        StartMission(const css::uno::Reference<css::xml::crypto::XXMLSecurityContext>& xSecurityContext);
 108     void        EndMission();
 109     sal_Int32   GetNewSecurityId();
 110     /** sets data that describes the certificate.
 111
 112         It is absolutely necessary that the parameter ouX509IssuerName is set. It contains
 113         the base64 encoded certificate, which is DER encoded. The XMLSec needs it to find
 114         the private key. Although issuer name and certificate should be sufficient to identify
 115         the certificate the implementation in XMLSec is broken, both for Windows and mozilla.
 116         The reason is that they use functions to find the certificate which take as parameter
 117         the DER encoded ASN.1 issuer name. The issuer name is a DName, where most attributes
 118         are of type DirectoryName, which is a choice of 5 string types. This information is
 119         not contained in the issuer string and while it is converted to the ASN.1 name the
 120         conversion function must assume a particular type, which is often wrong. For example,
 121         the Windows function CertStrToName will use a T.61 string if the string does not contain
 122         special characters. So if the certificate uses simple characters but encodes the
 123         issuer attributes in Utf8, then CertStrToName will use T.61. The resulting DER encoded
 124         ASN.1 name now contains different bytes which indicate the string type. The functions
 125         for finding the certificate apparently use memcmp - hence they fail to find the
 126         certificate.
 127      */
 128     void SetX509Certificate(sal_Int32 nSecurityId, const OUString& ouX509IssuerName,
 129         const OUString& ouX509SerialNumber, const OUString& ouX509Cert, const OUString& ouX509CertDigest,
 130         svl::crypto::SignatureMethodAlgorithm eAlgorithmID);
 131
 132     void AddEncapsulatedX509Certificate(const OUString& ouEncapsulatedX509Certificate);
 133
 134     void SetGpgCertificate(sal_Int32 nSecurityId, const OUString& ouGpgCertDigest,
 135         const OUString& ouGpgCert, const OUString& ouGpgOwner);
 136
 137     void        SetDateTime( sal_Int32 nSecurityId, const DateTime& rDateTime );
 138     void SetDescription(sal_Int32 nSecurityId, const OUString& rDescription);
 139     void SetSignatureLineId(sal_Int32 nSecurityId, const OUString& rSignatureLineId);
 140     void
 141     SetSignatureLineValidGraphic(sal_Int32 nSecurityId,
 142                                  const css::uno::Reference<css::graphic::XGraphic>& xValidGraphic);
 143     void SetSignatureLineInvalidGraphic(
 144         sal_Int32 nSecurityId, const css::uno::Reference<css::graphic::XGraphic>& xInvalidGraphic);
 145
 146     void        AddForSigning( sal_Int32 securityId, const OUString& uri, bool bBinary, bool bXAdESCompliantIfODF );
 147     void        CreateAndWriteSignature( const css::uno::Reference< css::xml::sax::XDocumentHandler >& xDocumentHandler, bool bXAdESCompliantIfODF );
 148     bool        ReadAndVerifySignature( const css::uno::Reference< css::io::XInputStream >& xInputStream );
 149
 150     // MT: ??? I think only for adding/removing, not for new signatures...
 151     // MM: Yes, but if you want to insert a new signature into an existing signature file, those function
 152     //     will be very useful, see Mission 3 in the new "multisigdemo" program   :-)
 153     css::uno::Reference< css::xml::sax::XWriter> CreateDocumentHandlerWithHeader( const css::uno::Reference< css::io::XOutputStream >& xOutputStream );
 154     static void CloseDocumentHandler( const css::uno::Reference< css::xml::sax::XDocumentHandler>& xDocumentHandler );
 155     static void ExportSignature(
 156         const css::uno::Reference< css::xml::sax::XDocumentHandler >& xDocumentHandler,
 157         const SignatureInformation& signatureInfo,
 158         bool bXAdESCompliantIfODF );
 159
 160     /// Read and verify OOXML signatures.
 161     bool ReadAndVerifySignatureStorage(const css::uno::Reference<css::embed::XStorage>& xStorage, bool bCacheLastSignature = true);
 162     /// Read and verify a single OOXML signature.
 163     bool ReadAndVerifySignatureStorageStream(const css::uno::Reference<css::io::XInputStream>& xInputStream);
 164     /// Adds or removes an OOXML digital signature relation to _rels/.rels if there wasn't any before.
 165     void EnsureSignaturesRelation(const css::uno::Reference<css::embed::XStorage>& xStorage, bool bAdd);
 166     /// Given that xStorage is an OOXML _xmlsignatures storage, create origin.sigs and its relations.
 167     void ExportSignatureRelations(const css::uno::Reference<css::embed::XStorage>& xStorage, int nSignatureCount);
 168     /// Given that xSignatureStorage is an OOXML _xmlsignatures storage, create and write a new signature.
 169     void CreateAndWriteOOXMLSignature(const css::uno::Reference<css::embed::XStorage>& xRootStorage, const css::uno::Reference<css::embed::XStorage>& xSignatureStorage, int nSignatureIndex);
 170     /// Similar to CreateAndWriteOOXMLSignature(), but used to write the signature to the persistent storage, not the temporary one.
 171     void ExportOOXMLSignature(const css::uno::Reference<css::embed::XStorage>& xRootStorage, const css::uno::Reference<css::embed::XStorage>& xSignatureStorage, const SignatureInformation& rInformation, int nSignatureIndex);
 172     /// Given that xStorage is an OOXML root storage, advertise signatures in its [Content_Types].xml stream.
 173     void ExportSignatureContentTypes(const css::uno::Reference<css::embed::XStorage>& xStorage, int nSignatureCount);
 174 };
 175
 176 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */