xmlsecurity/qa/unit/pdfsigning/pdfsigning.cxx                         |   15 
 xmlsecurity/qa/unit/signing/data/test.p7b                             |  249 
++++++++++
 xmlsecurity/qa/unit/signing/signing.cxx                               |   22 
 xmlsecurity/source/xmlsec/mscrypt/securityenvironment_mscryptimpl.cxx |   63 ++
 4 files changed, 340 insertions(+), 9 deletions(-)

New commits:
commit 49b823e2946c68bfd2f623800424a9049a2f14eb
Author:     Michael Stahl <michael.st...@allotropia.de>
AuthorDate: Fri Oct 15 16:58:07 2021 +0200
Commit:     Michael Stahl <michael.st...@allotropia.de>
CommitDate: Thu Oct 21 13:06:04 2021 +0200

    xmlsecurity: fix new tests on WNT
    
    Tests added in commit 40d70d427edddb589eda64fafc2e56536953d274 don't
    actually run on WNT but that wasn't obvious because commit
    149df1fec6472e30582162e17e04c75aee91d26a prevented running them in
    Jenkins on master, they failed only in the libreoffice-7-1 backport.
    
      xmlsecurity/qa/unit/signing/signing.cxx(631) : error : Assertion
      Test name: testODFDoubleX509Certificate::TestBody
      assertion failed
      - Expression: (nActual == SignatureState::NOTVALIDATED || nActual == 
SignatureState::OK)
      - 2
    
    This is an oddity where NSS claims the signature in the document is
    valid but CryptoAPI claims it is invalid; the hashes passed into the
    validation functions are the same.  Just allow BROKEN as an additional
    result value on WNT.
    
      xmlsecurity/qa/unit/signing/signing.cxx(550) : error : Assertion
      Test name: testODFX509CertificateChain::TestBody
      equality assertion failed
      - Expected: 0
      - Actual  : 1
    
    The problem here is that with NSS the tests use a custom NSS database
    in test/signing-keys so we need to make these certificates available for
    CryptoAPI too.
    
    The following one-liner converts the NSS database to a PKCS#7 that can
    be loaded by CrytpAPI:
    
    > openssl crl2pkcs7 -nocrl -certfile <(certutil -d sql:test/signing-keys -L 
| awk '/^[^ ].*,[^ ]*,/ { printf "%s", $1; for (i = 2; i < NF; i++) { printf " 
%s", $i; } printf "\n"; }' | while read name; do certutil -L -d 
sql:test/signing-keys -a -n "${name}" ; done) > test/signing-keys/test.p7b
    
    Then one might naively assume that something like this would allow these
    certificates to be added temporarily as trusted CAs:
    
    +                HCERTSTORE hRoot = CertOpenSystemStoreW( 0, L"Root" ) ;
    +                HCERTSTORE const hExtra = CertOpenStore(
    +                        CERT_STORE_PROV_FILENAME_A,
    +                        PKCS_7_ASN_ENCODING | X509_ASN_ENCODING,
    +                        NULL,
    +                        CERT_STORE_OPEN_EXISTING_FLAG | 
CERT_STORE_READONLY_FLAG,
    +                        path);
    +                if (hExtra != NULL && hRoot != NULL)
    +                {
    +                    BOOL ret = CertAddStoreToCollection(
    +                        hRoot,
    +                        hExtra,
    +                        CERT_PHYSICAL_STORE_ADD_ENABLE_FLAG,
    +                        0);
    +                    SAL_DEBUG("XXX hExtra done " << ret);
    +                }
    
    There is no error from this, but it doesn't work.
    
    Instead, check if CertGetCertificateChain() sets the
    CERT_TRUST_IS_UNTRUSTED_ROOT flag and then look up the certificate
    manually in the extra PKCS#7 store.
    
    Reviewed-on: https://gerrit.libreoffice.org/c/core/+/123667
    Tested-by: Jenkins
    Reviewed-by: Miklos Vajna <vmik...@collabora.com>
    (cherry picked from commit 7d664ec788acdc378506a7ff8b1120cea24a6770)
    
    Change-Id: Ic9865e0b5783211c2128ce0327c4583b7784ff62
    Reviewed-on: https://gerrit.libreoffice.org/c/core/+/123839
    Tested-by: Michael Stahl <michael.st...@allotropia.de>
    Reviewed-by: Michael Stahl <michael.st...@allotropia.de>

diff --git a/xmlsecurity/qa/unit/pdfsigning/pdfsigning.cxx 
b/xmlsecurity/qa/unit/pdfsigning/pdfsigning.cxx
index 63990fb36225..77757228be1c 100644
--- a/xmlsecurity/qa/unit/pdfsigning/pdfsigning.cxx
+++ b/xmlsecurity/qa/unit/pdfsigning/pdfsigning.cxx
@@ -12,6 +12,7 @@
 
 #include <comphelper/processfactory.hxx>
 #include <osl/file.hxx>
+#include <osl/process.h>
 #include <test/bootstrapfixture.hxx>
 #include <tools/datetime.hxx>
 #include <unotools/streamwrap.hxx>
@@ -118,15 +119,21 @@ void PDFSigningTest::setUp()
 
     
mxComponentContext.set(comphelper::getComponentContext(getMultiServiceFactory()));
 
-#ifndef _WIN32
-    // Set up cert8.db and key3.db in workdir/CppunitTest/
     OUString aSourceDir = m_directories.getURLFromSrc(DATA_DIRECTORY);
     OUString aTargetDir
         = 
m_directories.getURLFromWorkdir("/CppunitTest/xmlsecurity_pdfsigning.test.user/");
-    osl::File::copy(aSourceDir + "cert8.db", aTargetDir + "cert8.db");
-    osl::File::copy(aSourceDir + "key3.db", aTargetDir + "key3.db");
     OUString aTargetPath;
     osl::FileBase::getSystemPathFromFileURL(aTargetDir, aTargetPath);
+
+#ifdef _WIN32
+    // CryptoAPI test certificates
+    osl::File::copy(aSourceDir + "test.p7b", aTargetDir + "test.p7b");
+    OUString caVar("LIBO_TEST_CRYPTOAPI_PKCS7");
+    osl_setEnvironment(caVar.pData, aTargetPath.pData);
+#else
+    // Set up cert8.db and key3.db in workdir/CppunitTest/
+    osl::File::copy(aSourceDir + "cert8.db", aTargetDir + "cert8.db");
+    osl::File::copy(aSourceDir + "key3.db", aTargetDir + "key3.db");
     setenv("MOZILLA_CERTIFICATE_FOLDER", aTargetPath.toUtf8().getStr(), 1);
 #endif
 }
diff --git a/xmlsecurity/qa/unit/signing/data/test.p7b 
b/xmlsecurity/qa/unit/signing/data/test.p7b
new file mode 100644
index 000000000000..44723697a2bf
--- /dev/null
+++ b/xmlsecurity/qa/unit/signing/data/test.p7b
@@ -0,0 +1,249 @@
+-----BEGIN PKCS7-----
+MIIuNgYJKoZIhvcNAQcCoIIuJzCCLiMCAQExADALBgkqhkiG9w0BBwGggi4LMIIF
+sjCCA5qgAwIBAgICEAAwDQYJKoZIhvcNAQELBQAwZTELMAkGA1UEBhMCVUsxEDAO
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+Y3U3LDo+kQfo7hfVZ/HdrhK7ldhXbz7nMQA=
+-----END PKCS7-----
diff --git a/xmlsecurity/qa/unit/signing/signing.cxx 
b/xmlsecurity/qa/unit/signing/signing.cxx
index af4150cd6355..2ec3d14eb720 100644
--- a/xmlsecurity/qa/unit/signing/signing.cxx
+++ b/xmlsecurity/qa/unit/signing/signing.cxx
@@ -217,8 +217,15 @@ void SigningTest::setUp()
     OUString aTargetPath;
     osl::FileBase::getSystemPathFromFileURL(aTargetDir, aTargetPath);
 
+#ifdef _WIN32
+    // CryptoAPI test certificates
+    osl::File::copy(aSourceDir + "test.p7b", aTargetDir + "test.p7b");
+    OUString caVar("LIBO_TEST_CRYPTOAPI_PKCS7");
+    osl_setEnvironment(caVar.pData, aTargetPath.pData);
+#else
     OUString mozCertVar("MOZILLA_CERTIFICATE_FOLDER");
     osl_setEnvironment(mozCertVar.pData, aTargetPath.pData);
+#endif
     OUString gpgHomeVar("GNUPGHOME");
     osl_setEnvironment(gpgHomeVar.pData, aTargetPath.pData);
 
@@ -647,7 +654,8 @@ void SigningTest::testODFX509CertificateChain()
     CPPUNIT_ASSERT(infos[0].Signer.is());
     CPPUNIT_ASSERT_EQUAL(
         OUString("CN=Xmlsecurity RSA Test example Alice,O=Xmlsecurity RSA 
Test,ST=England,C=UK"),
-        infos[0].Signer->getSubjectName());
+        // CryptoAPI puts a space after comma, NSS does not...
+        infos[0].Signer->getSubjectName().replaceAll(", ", ","));
 }
 
 void SigningTest::testODFDoubleX509Data()
@@ -716,9 +724,15 @@ void SigningTest::testODFDoubleX509Certificate()
     SfxObjectShell* pObjectShell = pBaseModel->GetObjectShell();
     CPPUNIT_ASSERT(pObjectShell);
     SignatureState nActual = pObjectShell->GetDocumentSignatureState();
-    CPPUNIT_ASSERT_MESSAGE(
-        
(OString::number(/*o3tl::underlyingEnumValue(*/(int)nActual/*)*/).getStr()),
-        (nActual == SignatureState::NOTVALIDATED || nActual == 
SignatureState::OK));
+    bool const nTemp((nActual == SignatureState::NOTVALIDATED
+                      || nActual == SignatureState::OK
+#if defined(_WIN32)
+                      // oddly BCryptVerifySignature returns 
STATUS_INVALID_SIGNATURE
+                      // while the same succeeds with NSS 
_SGN_VerifyPKCS1DigestInfo
+                      || nActual == SignatureState::BROKEN
+#endif
+                      ));
+    
CPPUNIT_ASSERT_MESSAGE((OString::number(/*o3tl::underlyingEnumValue(*/(int)nActual/*)*/).getStr()),
 nTemp);
     uno::Sequence<security::DocumentSignatureInformation> const infos(
         pObjectShell->ImplAnalyzeSignature(false));
     CPPUNIT_ASSERT_EQUAL(sal_Int32(1), infos.getLength());
diff --git 
a/xmlsecurity/source/xmlsec/mscrypt/securityenvironment_mscryptimpl.cxx 
b/xmlsecurity/source/xmlsec/mscrypt/securityenvironment_mscryptimpl.cxx
index f1f93be6f7fb..1e4174138226 100644
--- a/xmlsecurity/source/xmlsec/mscrypt/securityenvironment_mscryptimpl.cxx
+++ b/xmlsecurity/source/xmlsec/mscrypt/securityenvironment_mscryptimpl.cxx
@@ -770,6 +770,61 @@ HCERTSTORE getCertStoreForIntermediatCerts(
     return store;
 }
 
+static bool CheckUnitTestStore(PCCERT_CHAIN_CONTEXT const pChainContext, DWORD 
ignoreFlags)
+{
+    bool ret = false;
+    OUString const v("LIBO_TEST_CRYPTOAPI_PKCS7");
+    OUString var;
+    if (osl_Process_E_None != osl_getEnvironment(v.pData, &var.pData))
+    {
+        return ret;
+    }
+    if (pChainContext->cChain == 0)
+    {
+        return ret;
+    }
+    PCERT_SIMPLE_CHAIN pSimpleChain = pChainContext->rgpChain[0];
+    // check if untrusted root is the only problem
+    if (pSimpleChain->TrustStatus.dwErrorStatus & 
~(CERT_TRUST_IS_UNTRUSTED_ROOT | ignoreFlags))
+    {
+        return ret;
+    }
+
+    // leak this store, re-opening is a waste of time in tests
+    static HCERTSTORE const hExtra = CertOpenStore(
+            CERT_STORE_PROV_FILENAME,
+            PKCS_7_ASN_ENCODING | X509_ASN_ENCODING,
+            NULL,
+            CERT_STORE_OPEN_EXISTING_FLAG | CERT_STORE_READONLY_FLAG,
+            OUString(var + "test.p7b").getStr());
+    assert(hExtra != NULL);
+    if (pSimpleChain->cElement < 1)
+    {
+        SAL_WARN("xmlsecurity.xmlsec", "unexpected empty chain");
+        return ret;
+    }
+    PCCERT_CONTEXT const 
pRoot(pSimpleChain->rgpElement[pSimpleChain->cElement-1]->pCertContext);
+    PCCERT_CONTEXT const pIssuerCert = CertFindCertificateInStore(
+            hExtra,
+            PKCS_7_ASN_ENCODING | X509_ASN_ENCODING,
+            0,
+            CERT_FIND_SUBJECT_NAME,
+            &pRoot->pCertInfo->Subject,
+            NULL);
+    if (pIssuerCert)
+    {
+        // check that it signed itself
+        DWORD flags = CERT_STORE_SIGNATURE_FLAG;
+        BOOL result = CertVerifySubjectCertificateContext(pRoot, pIssuerCert, 
&flags);
+        if (result == TRUE && flags == 0)
+        {
+            ret = true;
+        }
+    }
+    CertFreeCertificateContext(pIssuerCert);
+    return ret;
+}
+
 //We return only valid or invalid, as long as the API documentation expresses
 //explicitly that all validation steps are carried out even if one or several
 //errors occur. See also
@@ -873,7 +928,8 @@ sal_Int32 
SecurityEnvironment_MSCryptImpl::verifyCertificate(
             DWORD revocationFlags = CERT_TRUST_REVOCATION_STATUS_UNKNOWN |
                 CERT_TRUST_IS_OFFLINE_REVOCATION;
             DWORD otherErrorsMask = ~revocationFlags;
-            if( !(pSimpleChain->TrustStatus.dwErrorStatus & otherErrorsMask))
+            if (!(pSimpleChain->TrustStatus.dwErrorStatus & otherErrorsMask)
+                || CheckUnitTestStore(pChainContext, revocationFlags))
 
             {
                 //No errors except maybe those caused by missing revocation 
information
@@ -902,6 +958,11 @@ sal_Int32 
SecurityEnvironment_MSCryptImpl::verifyCertificate(
                         SAL_INFO("xmlsecurity.xmlsec", "Certificate is 
valid.");
                         validity = css::security::CertificateValidity::VALID;
                     }
+                    else if (CheckUnitTestStore(pChainContext, 0))
+                    {
+                        SAL_INFO("xmlsecurity.xmlsec", "root certificate found 
in extra test store");
+                        validity = css::security::CertificateValidity::VALID;
+                    }
                     else
                     {
                         SAL_INFO("xmlsecurity.xmlsec", "Certificate is 
invalid.");

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