Add support for extracting certificate chain from PEM string

Add PrivateKey class to simply encapsulate arbitrary private key data and the corresponding password. This enables easy unit testing by loading the certificate and key from within a test case. Test-Information: Added unit tests for certificate and key generated by OpenSSL. Tested on macOS 10.13.2 with OpenSSL. Change-Id: I1c9ffc3c70f61af65c4f1c48670badaf74b672b7
author: Tobias Markmann <tm@ayena.de> 2018-01-15 12:43:44 (GMT)
committer: Tobias Markmann <tm@ayena.de> 2018-02-02 08:56:47 (GMT)
commit: 9e2eee27d47ff1523677eb3881b4edcf66d7c0db (patch)
tree: c354e42f8b5314e1727da4aa8d9a248311e4242a /Swiften/TLS
parent: 9eaa75b907a515a65ccb2002632fbf2f30c5aee8 (diff)
download: swift-9e2eee27d47ff1523677eb3881b4edcf66d7c0db.zip
swift-9e2eee27d47ff1523677eb3881b4edcf66d7c0db.tar.bz2
8 files changed, 252 insertions, 7 deletions
diff --git a/Swiften/TLS/CertificateFactory.cpp b/Swiften/TLS/CertificateFactory.cpp
index 487f7cd..303bcf7 100644
--- a/Swiften/TLS/CertificateFactory.cpp
+++ b/Swiften/TLS/CertificateFactory.cpp
@@ -1,14 +1,35 @@
 /*
- * Copyright (c) 2010 Isode Limited.
+ * Copyright (c) 2010-2018 Isode Limited.
  * All rights reserved.
  * See the COPYING file for more information.
  */
 
 #include <Swiften/TLS/CertificateFactory.h>
 
+#include <cassert>
+#include <memory>
+#include <sstream>
+#include <string>
+
+#include <boost/algorithm/string/predicate.hpp>
+#include <boost/optional.hpp>
+
+#include <Swiften/Base/Log.h>
+#include <Swiften/StringCodecs/Base64.h>
+#include <Swiften/TLS/PrivateKey.h>
+
 namespace Swift {
 
 CertificateFactory::~CertificateFactory() {
 }
 
+std::vector<Certificate::ref> CertificateFactory::createCertificateChain(const ByteArray& /* data */) {
+    assert(false);
+    return std::vector<Certificate::ref>();
+}
+
+PrivateKey::ref CertificateFactory::createPrivateKey(const SafeByteArray& data, boost::optional<SafeByteArray> password) {
+    return std::make_shared<PrivateKey>(data, password);
+}
+
 }
diff --git a/Swiften/TLS/CertificateFactory.h b/Swiften/TLS/CertificateFactory.h
index 522a6e6..cb7fb6e 100644
--- a/Swiften/TLS/CertificateFactory.h
+++ b/Swiften/TLS/CertificateFactory.h
@@ -1,13 +1,17 @@
 /*
- * Copyright (c) 2010-2015 Isode Limited.
+ * Copyright (c) 2010-2018 Isode Limited.
  * All rights reserved.
  * See the COPYING file for more information.
  */
 
 #pragma once
 
+#include <boost/optional.hpp>
+
 #include <Swiften/Base/API.h>
+#include <Swiften/Base/SafeByteArray.h>
 #include <Swiften/TLS/Certificate.h>
+#include <Swiften/TLS/PrivateKey.h>
 
 namespace Swift {
     class SWIFTEN_API CertificateFactory {
@@ -15,5 +19,7 @@ namespace Swift {
             virtual ~CertificateFactory();
 
             virtual Certificate* createCertificateFromDER(const ByteArray& der) = 0;
+            virtual std::vector<Certificate::ref> createCertificateChain(const ByteArray& data);
+            PrivateKey::ref createPrivateKey(const SafeByteArray& data, boost::optional<SafeByteArray> password = boost::optional<SafeByteArray>());
     };
 }
diff --git a/Swiften/TLS/OpenSSL/OpenSSLCertificateFactory.cpp b/Swiften/TLS/OpenSSL/OpenSSLCertificateFactory.cpp
new file mode 100644
index 0000000..c94702c
--- /dev/null
+++ b/Swiften/TLS/OpenSSL/OpenSSLCertificateFactory.cpp
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2018 Isode Limited.
+ * All rights reserved.
+ * See the COPYING file for more information.
+ */
+
+#include <Swiften/TLS/OpenSSL/OpenSSLCertificateFactory.h>
+
+#include <openssl/pem.h>
+
+namespace Swift {
+
+OpenSSLCertificateFactory::OpenSSLCertificateFactory() {
+}
+
+OpenSSLCertificateFactory::~OpenSSLCertificateFactory() {
+}
+
+Certificate* OpenSSLCertificateFactory::createCertificateFromDER(const ByteArray& der) {
+    return new OpenSSLCertificate(der);
+}
+
+std::vector<Certificate::ref> OpenSSLCertificateFactory::createCertificateChain(const ByteArray& data) {
+    std::vector<Certificate::ref> certificateChain;
+
+    if (data.size() > std::numeric_limits<int>::max()) {
+        return certificateChain;
+    }
+
+    auto bio = std::shared_ptr<BIO>(BIO_new(BIO_s_mem()), BIO_free);
+    BIO_write(bio.get(), vecptr(data), int(data.size()));
+
+    // Attempt parsing data as PEM
+    X509* openSSLCert = nullptr;
+    auto x509certFromPEM = PEM_read_bio_X509(bio.get(), &openSSLCert, nullptr, nullptr);
+    if (x509certFromPEM && openSSLCert) {
+        std::shared_ptr<X509> x509Cert(openSSLCert, X509_free);
+        certificateChain.push_back(std::make_shared<OpenSSLCertificate>(x509Cert));
+        openSSLCert = nullptr;
+        while ((x509certFromPEM = PEM_read_bio_X509(bio.get(), &openSSLCert, nullptr, nullptr)) != nullptr) {
+            std::shared_ptr<X509> x509Cert(openSSLCert, X509_free);
+            certificateChain.push_back(std::make_shared<OpenSSLCertificate>(x509Cert));
+            openSSLCert = nullptr;
+        }
+    }
+
+    return certificateChain;
+}
+
+}
diff --git a/Swiften/TLS/OpenSSL/OpenSSLCertificateFactory.h b/Swiften/TLS/OpenSSL/OpenSSLCertificateFactory.h
index c996cd5..af45a33 100644
--- a/Swiften/TLS/OpenSSL/OpenSSLCertificateFactory.h
+++ b/Swiften/TLS/OpenSSL/OpenSSLCertificateFactory.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010-2014 Isode Limited.
+ * Copyright (c) 2010-2018 Isode Limited.
  * All rights reserved.
  * See the COPYING file for more information.
  */
@@ -12,8 +12,10 @@
 namespace Swift {
     class OpenSSLCertificateFactory : public CertificateFactory {
         public:
-            virtual Certificate* createCertificateFromDER(const ByteArray& der) {
-                return new OpenSSLCertificate(der);
-            }
+            OpenSSLCertificateFactory();
+            virtual ~OpenSSLCertificateFactory() override final;
+
+            virtual Certificate* createCertificateFromDER(const ByteArray& der) override final;
+            virtual std::vector<Certificate::ref> createCertificateChain(const ByteArray& data) override final;
     };
 }
diff --git a/Swiften/TLS/PrivateKey.cpp b/Swiften/TLS/PrivateKey.cpp
new file mode 100644
index 0000000..31cac1d
--- /dev/null
+++ b/Swiften/TLS/PrivateKey.cpp
@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) 2018 Isode Limited.
+ * All rights reserved.
+ * See the COPYING file for more information.
+ */
+
+#include <Swiften/TLS/PrivateKey.h>
+
+namespace Swift {
+
+PrivateKey::PrivateKey(const SafeByteArray& data, boost::optional<SafeByteArray> password) : data_(data), password_(password) {
+}
+
+const SafeByteArray& PrivateKey::getData() const {
+    return data_;
+}
+
+const boost::optional<SafeByteArray>& PrivateKey::getPassword() const {
+    return password_;
+}
+
+}
diff --git a/Swiften/TLS/PrivateKey.h b/Swiften/TLS/PrivateKey.h
new file mode 100644
index 0000000..332fc48
--- /dev/null
+++ b/Swiften/TLS/PrivateKey.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2018 Isode Limited.
+ * All rights reserved.
+ * See the COPYING file for more information.
+ */
+
+#pragma once
+
+#include <memory>
+
+#include <boost/optional.hpp>
+
+#include <Swiften/Base/SafeByteArray.h>
+#include <Swiften/TLS/PrivateKey.h>
+
+namespace Swift {
+
+class PrivateKey {
+public:
+    using ref = std::shared_ptr<PrivateKey>;
+
+public:
+    PrivateKey(const SafeByteArray& data, boost::optional<SafeByteArray> password = boost::optional<SafeByteArray>());
+
+    const SafeByteArray& getData() const;
+    const boost::optional<SafeByteArray>& getPassword() const;
+
+private:
+    SafeByteArray data_;
+    boost::optional<SafeByteArray> password_;
+};
+
+}
diff --git a/Swiften/TLS/SConscript b/Swiften/TLS/SConscript
index 68bf50b..ec9edd5 100644
--- a/Swiften/TLS/SConscript
+++ b/Swiften/TLS/SConscript
@@ -4,6 +4,7 @@ objects = swiften_env.SwiftenObject([
             "Certificate.cpp",
             "CertificateFactory.cpp",
             "CertificateTrustChecker.cpp",
+            "PrivateKey.cpp",
             "ServerIdentityVerifier.cpp",
             "TLSContext.cpp",
             "TLSContextFactory.cpp",
@@ -16,6 +17,7 @@ if myenv.get("HAVE_OPENSSL", 0) :
             "OpenSSL/OpenSSLContext.cpp",
             "OpenSSL/OpenSSLCertificate.cpp",
             "OpenSSL/OpenSSLContextFactory.cpp",
+            "OpenSSL/OpenSSLCertificateFactory.cpp",
         ])
     myenv.Append(CPPDEFINES = "HAVE_OPENSSL")
 elif myenv.get("HAVE_SCHANNEL", 0) :
diff --git a/Swiften/TLS/UnitTest/CertificateTest.cpp b/Swiften/TLS/UnitTest/CertificateTest.cpp
index 2483dae..aac2cfb 100644
--- a/Swiften/TLS/UnitTest/CertificateTest.cpp
+++ b/Swiften/TLS/UnitTest/CertificateTest.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010-2016 Isode Limited.
+ * Copyright (c) 2010-2018 Isode Limited.
  * All rights reserved.
  * See the COPYING file for more information.
  */
@@ -10,9 +10,12 @@
 #include <cppunit/extensions/TestFactoryRegistry.h>
 
 #include <Swiften/Base/ByteArray.h>
+#include <Swiften/Base/Platform.h>
 #include <Swiften/Crypto/CryptoProvider.h>
 #include <Swiften/Crypto/PlatformCryptoProvider.h>
 #include <Swiften/TLS/Certificate.h>
+#include <Swiften/TLS/CertificateFactory.h>
+#include <Swiften/TLS/PlatformTLSFactories.h>
 #include <Swiften/TLS/SimpleCertificate.h>
 
 using namespace Swift;
@@ -20,6 +23,10 @@ using namespace Swift;
 class CertificateTest : public CppUnit::TestFixture {
         CPPUNIT_TEST_SUITE(CertificateTest);
         CPPUNIT_TEST(testGetSHA1Fingerprint);
+#ifdef HAVE_OPENSSL
+        CPPUNIT_TEST(testParsingPEMCertificate);
+#endif
+        CPPUNIT_TEST(testParsingPEMPrivateKey);
         CPPUNIT_TEST_SUITE_END();
 
     public:
@@ -29,6 +36,108 @@ class CertificateTest : public CppUnit::TestFixture {
 
             CPPUNIT_ASSERT_EQUAL(std::string("2f:b5:e1:34:19:fc:89:24:68:65:e7:a3:24:f4:76:ec:62:4e:87:40"), Certificate::getSHA1Fingerprint(testling, std::shared_ptr<CryptoProvider>(PlatformCryptoProvider::create()).get()));
         }
+
+        void testParsingPEMCertificate() {
+            PlatformTLSFactories tlsFactories;
+
+            auto PEMCertificate = R"(-----BEGIN CERTIFICATE-----
+MIIEsjCCApoCCQCbkjlQfUqPtTANBgkqhkiG9w0BAQsFADAbMRkwFwYDVQQDDBBt
+b250YWd1ZS5leGFtcGxlMB4XDTE4MDExODE2NTMxMloXDTQ1MDYwNDE2NTMxMlow
+GzEZMBcGA1UEAwwQbW9udGFndWUuZXhhbXBsZTCCAiIwDQYJKoZIhvcNAQEBBQAD
+ggIPADCCAgoCggIBALAx5xuEYOjDJ9QHMvwRuDzxbHl1zR97SJFPAkmD8xH0sC61
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+zqCzpwGL
+-----END CERTIFICATE-----
+)";
+
+            auto certificateChain = tlsFactories.getCertificateFactory()->createCertificateChain(createByteArray(PEMCertificate));
+            CPPUNIT_ASSERT_EQUAL(size_t(1), certificateChain.size());
+
+            auto certificate = certificateChain[0];
+            CPPUNIT_ASSERT_EQUAL(std::string("/CN=montague.example"), certificate->getSubjectName());
+        }
+
+        void testParsingPEMPrivateKey() {
+            PlatformTLSFactories tlsFactories;
+
+            auto PEMPrivateKey = R"(-----BEGIN PRIVATE KEY-----
+MIIJQwIBADANBgkqhkiG9w0BAQEFAASCCS0wggkpAgEAAoICAQCwMecbhGDowyfU
+BzL8Ebg88Wx5dc0fe0iRTwJJg/MR9LAutQzUclL0aulF2+M54anqqzbmfT1eOxsi
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+-----END PRIVATE KEY-----
+)";
+
+            auto privateKey = tlsFactories.getCertificateFactory()->createPrivateKey(createSafeByteArray(PEMPrivateKey));
+
+            CPPUNIT_ASSERT(privateKey != nullptr);
+        }
 };
 
 CPPUNIT_TEST_SUITE_REGISTRATION(CertificateTest);
author	Tobias Markmann <tm@ayena.de>	2018-01-15 12:43:44 (GMT)
committer	Tobias Markmann <tm@ayena.de>	2018-02-02 08:56:47 (GMT)
commit	9e2eee27d47ff1523677eb3881b4edcf66d7c0db (patch)
tree	c354e42f8b5314e1727da4aa8d9a248311e4242a /Swiften/TLS
parent	9eaa75b907a515a65ccb2002632fbf2f30c5aee8 (diff)
download	swift-9e2eee27d47ff1523677eb3881b4edcf66d7c0db.zip swift-9e2eee27d47ff1523677eb3881b4edcf66d7c0db.tar.bz2