Moved certificate code into 'vmime::net::security::cert' namespace.

1 files changed, 164 insertions, 0 deletions

diff --git a/src/security/cert/defaultCertificateVerifier.cpp b/src/security/cert/defaultCertificateVerifier.cpp
new file mode 100644
index 00000000..b125d3e4
--- /dev/null
+++ b/src/security/cert/defaultCertificateVerifier.cpp
@@ -0,0 +1,164 @@
+//
+// VMime library (http://www.vmime.org)
+// Copyright (C) 2002-2005 Vincent Richard <[email protected]>
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of
+// the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// Linking this library statically or dynamically with other modules is making
+// a combined work based on this library.  Thus, the terms and conditions of
+// the GNU General Public License cover the whole combination.
+//
+
+#include "vmime/security/cert/defaultCertificateVerifier.hpp"
+
+#include "vmime/security/cert/X509Certificate.hpp"
+
+#include "vmime/exception.hpp"
+
+
+namespace vmime {
+namespace security {
+namespace cert {
+
+
+defaultCertificateVerifier::defaultCertificateVerifier()
+{
+}
+
+
+defaultCertificateVerifier::~defaultCertificateVerifier()
+{
+}
+
+
+defaultCertificateVerifier::defaultCertificateVerifier(const defaultCertificateVerifier&)
+	: certificateVerifier()
+{
+	// Not used
+}
+
+
+void defaultCertificateVerifier::verify(ref <certificateChain> chain)
+{
+	if (chain->getCount() == 0)
+		return;
+
+	const string type = chain->getAt(0)->getType();
+
+	if (type == "X.509")
+		verifyX509(chain);
+	else
+		throw exceptions::unsupported_certificate_type(type);
+}
+
+
+void defaultCertificateVerifier::verifyX509(ref <certificateChain> chain)
+{
+	// For every certificate in the chain, verify that the certificate
+	// has been issued by the next certificate in the chain
+	if (chain->getCount() >= 2)
+	{
+		for (unsigned int i = 0 ; i < chain->getCount() - 1 ; ++i)
+		{
+			ref <X509Certificate> cert =
+				chain->getAt(i).dynamicCast <X509Certificate>();
+
+			ref <X509Certificate> next =
+				chain->getAt(i + 1).dynamicCast <X509Certificate>();
+
+			if (!cert->checkIssuer(next))
+			{
+				throw exceptions::certificate_verification_exception
+					("Subject/issuer verification failed.");
+			}
+		}
+	}
+
+	// For every certificate in the chain, verify that the certificate
+	// is valid at the current time
+	const datetime now = datetime::now();
+
+	for (unsigned int i = 0 ; i < chain->getCount() ; ++i)
+	{
+		ref <X509Certificate> cert =
+			chain->getAt(i).dynamicCast <X509Certificate>();
+
+		const datetime begin = cert->getActivationDate();
+		const datetime end = cert->getExpirationDate();
+
+		if (now < begin || now > end)
+		{
+			throw exceptions::certificate_verification_exception
+				("Validity date check failed.");
+		}
+	}
+
+	// Check whether the certificate can be trusted
+
+	// -- First, verify that the the last certificate in the chain was
+	// -- issued by a third-party that we trust
+	ref <X509Certificate> lastCert =
+		chain->getAt(chain->getCount() - 1).dynamicCast <X509Certificate>();
+
+	bool trusted = false;
+
+	for (unsigned int i = 0 ; !trusted && i < m_x509RootCAs.size() ; ++i)
+	{
+		ref <X509Certificate> rootCa = m_x509RootCAs[i];
+
+		if (lastCert->verify(rootCa))
+			trusted = true;
+	}
+
+	// -- Next, if the issuer certificate cannot be verified against
+	// -- root CAs, compare the subject's certificate against the
+	// -- trusted certificates
+	ref <X509Certificate> firstCert =
+		chain->getAt(0).dynamicCast <X509Certificate>();
+
+	for (unsigned int i = 0 ; !trusted && i < m_x509TrustedCerts.size() ; ++i)
+	{
+		ref <X509Certificate> cert = m_x509TrustedCerts[i];
+
+		if (firstCert->equals(cert))
+			trusted = true;
+	}
+
+	if (!trusted)
+	{
+		throw exceptions::certificate_verification_exception
+			("Cannot verify certificate against trusted certificates.");
+	}
+}
+
+
+void defaultCertificateVerifier::setX509RootCAs
+	(const std::vector <ref <X509Certificate> >& caCerts)
+{
+	m_x509RootCAs = caCerts;
+}
+
+
+void defaultCertificateVerifier::setX509TrustedCerts
+	(const std::vector <ref <X509Certificate> >& trustedCerts)
+{
+	m_x509TrustedCerts = trustedCerts;
+}
+
+
+} // cert
+} // security
+} // vmime
+