gpg4libre: some code improvements, add metadata for OpenPGP keys

Change-Id: I1beb692b9a9a34b5f0cf743ba9e4a145ac582184

12 files changed, 103 insertions, 77 deletions

diff --git a/xmlsecurity/inc/sigstruct.hxx b/xmlsecurity/inc/sigstruct.hxx
index c6c706705aba..68e64176206b 100644
--- a/xmlsecurity/inc/sigstruct.hxx
+++ b/xmlsecurity/inc/sigstruct.hxx
@@ -75,6 +75,7 @@ struct SignatureInformation
     OUString ouX509SerialNumber;
     OUString ouX509Certificate;
 
+    OUString ouGpgKeyID;
     OUString ouGpgCertificate;
 
     OUString ouSignatureValue;
diff --git a/xmlsecurity/inc/xsecctl.hxx b/xmlsecurity/inc/xsecctl.hxx
index 02450d1197bd..3e4037c3ce41 100644
--- a/xmlsecurity/inc/xsecctl.hxx
+++ b/xmlsecurity/inc/xsecctl.hxx
@@ -306,6 +306,8 @@ private:
     void setX509Certificate( OUString& ouX509Certificate );
     void setSignatureValue( OUString& ouSignatureValue );
     void setDigestValue( sal_Int32 nDigestID, OUString& ouDigestValue );
+    void setGpgKeyID( OUString& ouKeyID );
+    void setGpgCertificate( OUString& ouGpgCert );
 
     void setDate( OUString& ouDate );
     void setDescription(const OUString& rDescription);
diff --git a/xmlsecurity/source/dialogs/digitalsignaturesdialog.cxx b/xmlsecurity/source/dialogs/digitalsignaturesdialog.cxx
index d9f9bba47ec2..a9fbe930b30d 100644
--- a/xmlsecurity/source/dialogs/digitalsignaturesdialog.cxx
+++ b/xmlsecurity/source/dialogs/digitalsignaturesdialog.cxx
@@ -518,6 +518,7 @@ void DigitalSignaturesDialog::ImplFillSignaturesBox()
             const SignatureInformation& rInfo = maSignatureManager.maCurrentSignatureInformations[n];
             uno::Reference< css::security::XCertificate > xCert = getCertificate(rInfo);
 
+            // TODO - should use pgpdata from info provider?
             OUString aSubject;
             OUString aIssuer;
             OUString aDateTimeStr;
diff --git a/xmlsecurity/source/gpg/CertificateImpl.cxx b/xmlsecurity/source/gpg/CertificateImpl.cxx
index c0f48e309c7c..e40f59323a04 100644
--- a/xmlsecurity/source/gpg/CertificateImpl.cxx
+++ b/xmlsecurity/source/gpg/CertificateImpl.cxx
@@ -24,13 +24,12 @@ using namespace css::security;
 using namespace css::util;
 
 CertificateImpl::CertificateImpl() :
-    m_pKey(nullptr)
+    m_pKey()
 {
 }
 
 CertificateImpl::~CertificateImpl()
 {
-    // TODO: cleanup key
 }
 
 //Methods from XCertificateImpl
@@ -214,17 +213,16 @@ void CertificateImpl::setCertificate(GpgME::Context* ctx, const GpgME::Key& key)
     GpgME::Data data_out;
     ctx->exportPublicKeys(key.keyID(), data_out);
 
-    // TODO: needs some error handling
-    data_out.seek(0,SEEK_SET);
+    assert(data_out.seek(0,SEEK_SET) == 0);
     int len=0, curr=0; char buf;
     while( (curr=data_out.read(&buf, 1)) )
         len += curr;
 
     // write bits to sequence of bytes
     m_aBits.realloc(len);
-    data_out.seek(0,SEEK_SET);
+    assert(data_out.seek(0,SEEK_SET) == 0);
     if( data_out.read(m_aBits.getArray(), len) != len )
-        throw RuntimeException("The GpgME library failed to initialize for the OpenPGP protocol.");
+        throw RuntimeException("The GpgME library failed to read the key");
 }
 
 const GpgME::Key* CertificateImpl::getCertificate() const
diff --git a/xmlsecurity/source/gpg/SEInitializer.cxx b/xmlsecurity/source/gpg/SEInitializer.cxx
index af02de9d7ece..0e4cbd9d8cc8 100644
--- a/xmlsecurity/source/gpg/SEInitializer.cxx
+++ b/xmlsecurity/source/gpg/SEInitializer.cxx
@@ -11,6 +11,8 @@
 #include "SecurityEnvironment.hxx"
 #include "XMLSecurityContext.hxx"
 
+#include <gpgme.h>
+#include <context.h>
 
 using namespace css;
 using namespace css::lang;
@@ -21,6 +23,9 @@ using namespace css::xml::crypto;
 SEInitializerGpg::SEInitializerGpg( const css::uno::Reference< css::uno::XComponentContext > &rxContext )
 {
     m_xContext = rxContext;
+
+    // Also init GpgME while we're at it
+    GpgME::initializeLibrary();
 }
 
 SEInitializerGpg::~SEInitializerGpg()
diff --git a/xmlsecurity/source/gpg/SecurityEnvironment.cxx b/xmlsecurity/source/gpg/SecurityEnvironment.cxx
index d120b2a985fa..2b8a2d567afd 100644
--- a/xmlsecurity/source/gpg/SecurityEnvironment.cxx
+++ b/xmlsecurity/source/gpg/SecurityEnvironment.cxx
@@ -14,8 +14,6 @@
 #include <comphelper/servicehelper.hxx>
 #include <list>
 
-#include <gpgme.h>
-#include <context.h>
 #include <key.h>
 #include <keylistresult.h>
 
@@ -26,6 +24,13 @@ using namespace css::lang;
 
 SecurityEnvironmentGpg::SecurityEnvironmentGpg()
 {
+    GpgME::Error err = GpgME::checkEngine(GpgME::OpenPGP);
+    if (err)
+        throw RuntimeException("The GpgME library failed to initialize for the OpenPGP protocol.");
+
+    m_ctx.reset( GpgME::Context::createForProtocol(GpgME::OpenPGP) );
+    if (m_ctx == nullptr)
+        throw RuntimeException("The GpgME library failed to initialize for the OpenPGP protocol.");
 }
 
 SecurityEnvironmentGpg::~SecurityEnvironmentGpg()
@@ -59,33 +64,22 @@ OUString SecurityEnvironmentGpg::getSecurityEnvironmentInformation()
 
 Sequence< Reference < XCertificate > > SecurityEnvironmentGpg::getPersonalCertificates()
 {
-    // TODO: move to central init
-    GpgME::initializeLibrary();
-    GpgME::Error err = GpgME::checkEngine(GpgME::OpenPGP);
-    if (err)
-        throw RuntimeException("The GpgME library failed to initialize for the OpenPGP protocol.");
-
-    // TODO: keep that around for SecurityEnvironmentGpg lifetime
-    GpgME::Context* ctx = GpgME::Context::createForProtocol(GpgME::OpenPGP);
-    if (ctx == nullptr)
-        throw RuntimeException("The GpgME library failed to initialize for the OpenPGP protocol.");
-
     CertificateImpl* xCert;
     std::list< CertificateImpl* > certsList;
 
-    ctx->setKeyListMode(GPGME_KEYLIST_MODE_LOCAL);
-    err = ctx->startKeyListing("", true);
+    m_ctx->setKeyListMode(GPGME_KEYLIST_MODE_LOCAL);
+    GpgME::Error err = m_ctx->startKeyListing("", true);
     while (!err) {
-        GpgME::Key k = ctx->nextKey(err);
+        GpgME::Key k = m_ctx->nextKey(err);
         if (err)
             break;
         if (!k.isInvalid()) {
             xCert = new CertificateImpl();
-            xCert->setCertificate(ctx,k);
+            xCert->setCertificate(m_ctx.get(),k);
             certsList.push_back(xCert);
         }
     }
-    ctx->endKeyListing();
+    m_ctx->endKeyListing();
 
     Sequence< Reference< XCertificate > > xCertificateSequence(certsList.size());
     std::list< CertificateImpl* >::iterator xcertIt;
@@ -98,37 +92,25 @@ Sequence< Reference < XCertificate > > SecurityEnvironmentGpg::getPersonalCertif
 
 Reference< XCertificate > SecurityEnvironmentGpg::getCertificate( const OUString& issuerName, const Sequence< sal_Int8 >& /*serialNumber*/ )
 {
-    // TODO: move to central init
-    GpgME::initializeLibrary();
-    GpgME::Error err = GpgME::checkEngine(GpgME::OpenPGP);
-    if (err)
-        throw RuntimeException("The GpgME library failed to initialize for the OpenPGP protocol.");
-
-    // TODO: keep that around for SecurityEnvironmentGpg lifetime
-    GpgME::Context* ctx = GpgME::Context::createForProtocol(GpgME::OpenPGP);
-    if (ctx == nullptr)
-        throw RuntimeException("The GpgME library failed to initialize for the OpenPGP protocol.");
-
     CertificateImpl* xCert=nullptr;
     std::list< CertificateImpl* > certsList;
 
-    ctx->setKeyListMode(GPGME_KEYLIST_MODE_LOCAL);
+    m_ctx->setKeyListMode(GPGME_KEYLIST_MODE_LOCAL);
     OString ostr = OUStringToOString( issuerName , RTL_TEXTENCODING_UTF8 );
-    err = ctx->startKeyListing(ostr.getStr(), true);
+    GpgME::Error err = m_ctx->startKeyListing(ostr.getStr(), true);
     while (!err) {
-        GpgME::Key k = ctx->nextKey(err);
+        GpgME::Key k = m_ctx->nextKey(err);
         if (err)
             break;
         if (!k.isInvalid()) {
             xCert = new CertificateImpl();
-            xCert->setCertificate(ctx, k);
-            ctx->endKeyListing();
+            xCert->setCertificate(m_ctx.get(), k);
+            m_ctx->endKeyListing();
             return xCert;
         }
     }
-    ctx->endKeyListing();
+    m_ctx->endKeyListing();
 
-    // TODO: cleanup ctx
     return nullptr;
 }
 
diff --git a/xmlsecurity/source/gpg/SecurityEnvironment.hxx b/xmlsecurity/source/gpg/SecurityEnvironment.hxx
index 51a263fa5e5d..66d79bb8643e 100644
--- a/xmlsecurity/source/gpg/SecurityEnvironment.hxx
+++ b/xmlsecurity/source/gpg/SecurityEnvironment.hxx
@@ -24,10 +24,14 @@
 #include <com/sun/star/security/CertificateValidity.hpp>
 #include <com/sun/star/lang/XUnoTunnel.hpp>
 
+#include <gpgme.h>
+#include <context.h>
 
 class SecurityEnvironmentGpg : public cppu::WeakImplHelper< css::xml::crypto::XSecurityEnvironment,
                                                             css::lang::XUnoTunnel >
 {
+    std::unique_ptr<GpgME::Context> m_ctx;
+
 public:
     SecurityEnvironmentGpg();
     virtual ~SecurityEnvironmentGpg() override;
@@ -61,6 +65,7 @@ public:
     virtual css::uno::Reference< css::security::XCertificate > SAL_CALL createCertificateFromAscii(
         const OUString& asciiCertificate ) override;
 
+    GpgME::Context& getGpgContext() { return *m_ctx.get(); }
 } ;
 
 #endif // INCLUDED_XMLSECURITY_SOURCE_GPG_SECURITYENVIRONMENT_HXX
diff --git a/xmlsecurity/source/gpg/xmlsignature_gpgimpl.cxx b/xmlsecurity/source/gpg/xmlsignature_gpgimpl.cxx
index b9219f0f3281..95773b5830a8 100644
--- a/xmlsecurity/source/gpg/xmlsignature_gpgimpl.cxx
+++ b/xmlsecurity/source/gpg/xmlsignature_gpgimpl.cxx
@@ -98,8 +98,6 @@ SAL_CALL XMLSignature_GpgImpl::generate(
     if( pSecEnv == nullptr )
         throw RuntimeException() ;
 
-    // TODO figure out key from pSecEnv!
-    // unclear how/where that is transported in nss impl...
     setErrorRecorder();
 
     //Create Signature context
@@ -170,20 +168,10 @@ SAL_CALL XMLSignature_GpgImpl::generate(
     if( xmlSecTransformCtxXmlExecute(&(pDsigCtx->transformCtx), nodeset) < 0 )
         throw RuntimeException("The GpgME library failed to initialize for the OpenPGP protocol.");
 
-    //Sign the template via gpgme
-    // TODO move init to central place
-    GpgME::initializeLibrary();
-    if( GpgME::checkEngine(GpgME::OpenPGP) )
-        throw RuntimeException("The GpgME library failed to initialize for the OpenPGP protocol.");
-
-    // TODO get ctx from SecurityEnv?
-    GpgME::Context* ctx = GpgME::Context::createForProtocol(GpgME::OpenPGP);
-    if( ctx == nullptr )
-        throw RuntimeException("The GpgME library failed to initialize for the OpenPGP protocol.");
-
-    ctx->setKeyListMode(GPGME_KEYLIST_MODE_LOCAL);
+    GpgME::Context& rCtx=pSecEnv->getGpgContext();
+    rCtx.setKeyListMode(GPGME_KEYLIST_MODE_LOCAL);
     GpgME::Error err;
-    if( ctx->addSigningKey(ctx->key("0x909BE2575CEDBEA3", err, true)) )
+    if( rCtx.addSigningKey(rCtx.key("0x909BE2575CEDBEA3", err, true)) )
         throw RuntimeException("The GpgME library failed to initialize for the OpenPGP protocol.");
 
     // good, ctx is setup now, let's sign the lot
@@ -194,17 +182,16 @@ SAL_CALL XMLSignature_GpgImpl::generate(
 
     SAL_INFO("xmlsecurity.xmlsec.gpg", "Generating signature for: " << xmlSecBufferGetData(pDsigCtx->transformCtx.result));
 
-    GpgME::SigningResult sign_res=ctx->sign(data_in, data_out,
+    GpgME::SigningResult sign_res=rCtx.sign(data_in, data_out,
                                             GpgME::Detached);
-    // TODO: needs some error handling
-    data_out.seek(0,SEEK_SET);
+    assert(data_out.seek(0,SEEK_SET) == 0);
     int len=0, curr=0; char buf;
     while( (curr=data_out.read(&buf, 1)) )
         len += curr;
 
     // write signed data to xml
     std::vector<unsigned char> buf2(len);
-    data_out.seek(0,SEEK_SET);
+    assert(data_out.seek(0,SEEK_SET) == 0);
     if( data_out.read(&buf2[0], len) != len )
         throw RuntimeException("The GpgME library failed to initialize for the OpenPGP protocol.");
 
@@ -273,15 +260,11 @@ SAL_CALL XMLSignature_GpgImpl::validate(
     {
         Reference< XSecurityEnvironment > aEnvironment = aSecurityCtx->getSecurityEnvironmentByIndex(i);
 
-#if 0
-        //Get Keys Manager
         SecurityEnvironmentGpg* pSecEnv =
             dynamic_cast<SecurityEnvironmentGpg*>(aEnvironment.get());
         if( pSecEnv == nullptr )
             throw RuntimeException() ;
-#endif
 
-        // TODO pSecEnv is still from nss, roll our own impl there
         // TODO figure out key from pSecEnv!
         // unclear how/where that is transported in nss impl...
 
@@ -317,17 +300,8 @@ SAL_CALL XMLSignature_GpgImpl::validate(
             throw RuntimeException("The GpgME library failed to initialize for the OpenPGP protocol.");
 
         // Validate the template via gpgme
-        // TODO move init to central place
-        GpgME::initializeLibrary();
-        if( GpgME::checkEngine(GpgME::OpenPGP) )
-            throw RuntimeException("The GpgME library failed to initialize for the OpenPGP protocol.");
-
-        // TODO get ctx from SecurityEnv?
-        GpgME::Context* ctx = GpgME::Context::createForProtocol(GpgME::OpenPGP);
-        if( ctx == nullptr )
-            throw RuntimeException("The GpgME library failed to initialize for the OpenPGP protocol.");
+        GpgME::Context& rCtx=pSecEnv->getGpgContext();
 
-        // good, ctx is setup now, let's validate the lot
         GpgME::Data data_text(
             reinterpret_cast<char*>(xmlSecBufferGetData(pDsigCtx->transformCtx.result)),
             xmlSecBufferGetSize(pDsigCtx->transformCtx.result), false);
@@ -345,7 +319,7 @@ SAL_CALL XMLSignature_GpgImpl::validate(
             reinterpret_cast<char*>(pSignatureValue),
             xmlStrlen(pSignatureValue), false);
 
-        GpgME::VerificationResult verify_res=ctx->verifyDetachedSignature(
+        GpgME::VerificationResult verify_res=rCtx.verifyDetachedSignature(
             data_signature, data_text);
 
         xmlFree(pSignatureValue);
diff --git a/xmlsecurity/source/helper/xsecctl.cxx b/xmlsecurity/source/helper/xsecctl.cxx
index acac83ca2fe3..0df6c08f29ef 100644
--- a/xmlsecurity/source/helper/xsecctl.cxx
+++ b/xmlsecurity/source/helper/xsecctl.cxx
@@ -735,7 +735,7 @@ void XSecController::exportSignature(
                     xDocumentHandler->endElement( "PGPKeyID" );
 
                     /* Write PGPKeyPacket element */
-                    if (!signatureInfo.ouX509Certificate.isEmpty())
+                    if (!signatureInfo.ouGpgCertificate.isEmpty())
                     {
                         xDocumentHandler->startElement(
                             "PGPKeyPacket",
diff --git a/xmlsecurity/source/helper/xsecparser.cxx b/xmlsecurity/source/helper/xsecparser.cxx
index 61c2395aae27..0fb46efb2b67 100644
--- a/xmlsecurity/source/helper/xsecparser.cxx
+++ b/xmlsecurity/source/helper/xsecparser.cxx
@@ -34,6 +34,8 @@ XSecParser::XSecParser(XMLSignatureHelper& rXMLSignatureHelper,
     : m_bInX509IssuerName(false)
     , m_bInX509SerialNumber(false)
     , m_bInX509Certificate(false)
+    , m_bInGpgCertificate(false)
+    , m_bInGpgKeyID(false)
     , m_bInCertDigest(false)
     , m_bInEncapsulatedX509Certificate(false)
     , m_bInSigningTime(false)
@@ -68,6 +70,8 @@ void SAL_CALL XSecParser::startDocument(  )
     m_bInX509IssuerName = false;
     m_bInX509SerialNumber = false;
     m_bInX509Certificate = false;
+    m_bInGpgCertificate = false;
+    m_bInGpgKeyID = false;
     m_bInSignatureValue = false;
     m_bInDigestValue = false;
     m_bInDate = false;
@@ -174,6 +178,16 @@ void SAL_CALL XSecParser::startElement(
             m_ouX509Certificate.clear();
             m_bInX509Certificate = true;
         }
+        else if (aName == "PGPKeyID")
+        {
+            m_ouGpgKeyID.clear();
+            m_bInGpgKeyID = true;
+        }
+        else if (aName == "PGPKeyPacket")
+        {
+            m_ouGpgCertificate.clear();
+            m_bInGpgCertificate = true;
+        }
         else if (aName == "SignatureValue")
         {
             m_ouSignatureValue.clear();
@@ -287,6 +301,16 @@ void SAL_CALL XSecParser::endElement( const OUString& aName )
             m_pXSecController->setX509Certificate( m_ouX509Certificate );
             m_bInX509Certificate = false;
         }
+        else if (aName == "PGPKeyID")
+        {
+            m_pXSecController->setGpgKeyID( m_ouGpgKeyID );
+            m_bInGpgKeyID = false;
+        }
+        else if (aName == "PGPKeyPacket")
+        {
+            m_pXSecController->setGpgCertificate( m_ouGpgCertificate );
+            m_bInGpgCertificate = false;
+        }
         else if (aName == "xd:CertDigest")
         {
             m_pXSecController->setCertDigest( m_ouCertDigest );
@@ -350,6 +374,14 @@ void SAL_CALL XSecParser::characters( const OUString& aChars )
     {
         m_ouX509Certificate += aChars;
     }
+    else if (m_bInGpgCertificate)
+    {
+        m_ouGpgCertificate += aChars;
+    }
+    else if (m_bInGpgKeyID)
+    {
+        m_ouGpgKeyID += aChars;
+    }
     else if (m_bInSignatureValue)
     {
         m_ouSignatureValue += aChars;
diff --git a/xmlsecurity/source/helper/xsecparser.hxx b/xmlsecurity/source/helper/xsecparser.hxx
index dcfbead56a4c..acf9909a2580 100644
--- a/xmlsecurity/source/helper/xsecparser.hxx
+++ b/xmlsecurity/source/helper/xsecparser.hxx
@@ -57,6 +57,8 @@ private:
     OUString m_ouX509IssuerName;
     OUString m_ouX509SerialNumber;
     OUString m_ouX509Certificate;
+    OUString m_ouGpgCertificate;
+    OUString m_ouGpgKeyID;
     OUString m_ouCertDigest;
     OUString m_ouEncapsulatedX509Certificate;
     OUString m_ouDigestValue;
@@ -71,6 +73,8 @@ private:
     bool m_bInX509IssuerName;
     bool m_bInX509SerialNumber;
     bool m_bInX509Certificate;
+    bool m_bInGpgCertificate;
+    bool m_bInGpgKeyID;
     bool m_bInCertDigest;
     bool m_bInEncapsulatedX509Certificate;
     bool m_bInSigningTime;
diff --git a/xmlsecurity/source/helper/xsecverify.cxx b/xmlsecurity/source/helper/xsecverify.cxx
index 2dfa54aa5302..0e030f37de07 100644
--- a/xmlsecurity/source/helper/xsecverify.cxx
+++ b/xmlsecurity/source/helper/xsecverify.cxx
@@ -246,6 +246,28 @@ void XSecController::setDigestValue( sal_Int32 nDigestID, OUString& ouDigestValu
     reference.ouDigestValue = ouDigestValue;
 }
 
+void XSecController::setGpgKeyID( OUString& ouKeyID )
+{
+    if (m_vInternalSignatureInformations.empty())
+    {
+        SAL_INFO("xmlsecurity.helper","XSecController::setGpgKeyID: no signature");
+        return;
+    }
+    InternalSignatureInformation &isi = m_vInternalSignatureInformations.back();
+    isi.signatureInfor.ouGpgKeyID = ouKeyID;
+}
+
+void XSecController::setGpgCertificate( OUString& ouGpgCert )
+{
+    if (m_vInternalSignatureInformations.empty())
+    {
+        SAL_INFO("xmlsecurity.helper","XSecController::setGpgCertificate: no signature");
+        return;
+    }
+    InternalSignatureInformation &isi = m_vInternalSignatureInformations.back();
+    isi.signatureInfor.ouGpgCertificate = ouGpgCert;
+}
+
 void XSecController::setDate( OUString& ouDate )
 {
     if (m_vInternalSignatureInformations.empty())