1 files changed, 135 insertions, 0 deletions
diff --git a/Swiften/Crypto/CommonCryptoCryptoProvider.cpp b/Swiften/Crypto/CommonCryptoCryptoProvider.cpp
new file mode 100644
index 0000000..14f9284
--- /dev/null
+++ b/Swiften/Crypto/CommonCryptoCryptoProvider.cpp
@@ -0,0 +1,135 @@
+/*
+ * Copyright (c) 2013 Remko Tronçon
+ * Licensed under the GNU General Public License.
+ * See the COPYING file for more information.
+ */
+
+#include <Swiften/Crypto/CommonCryptoCryptoProvider.h>
+
+#include <CommonCrypto/CommonDigest.h>
+#include <CommonCrypto/CommonHMAC.h>
+#include <cassert>
+
+#include <Swiften/Crypto/Hash.h>
+#include <Swiften/Base/ByteArray.h>
+#include <boost/numeric/conversion/cast.hpp>
+
+using namespace Swift;
+
+namespace {
+	class SHA1Hash : public Hash {
+		public:
+			SHA1Hash() : finalized(false) {
+				if (!CC_SHA1_Init(&context)) {
+					assert(false);
+				}
+			}
+
+			~SHA1Hash() {
+			}
+
+			virtual Hash& update(const ByteArray& data) SWIFTEN_OVERRIDE {
+				return updateInternal(data);
+			}
+
+			virtual Hash& update(const SafeByteArray& data) SWIFTEN_OVERRIDE {
+				return updateInternal(data);
+			}
+
+			virtual std::vector<unsigned char> getHash() {
+				assert(!finalized);
+				std::vector<unsigned char> result(CC_SHA1_DIGEST_LENGTH);
+				CC_SHA1_Final(vecptr(result), &context);
+				return result;
+			}
+
+		private:
+			template<typename ContainerType>
+			Hash& updateInternal(const ContainerType& data) {
+				assert(!finalized);
+				if (!CC_SHA1_Update(&context, vecptr(data), boost::numeric_cast<CC_LONG>(data.size()))) {
+					assert(false);
+				}
+				return *this;
+			}
+
+		private:
+			CC_SHA1_CTX context;
+			bool finalized;
+	};
+
+	class MD5Hash : public Hash {
+		public:
+			MD5Hash() : finalized(false) {
+				if (!CC_MD5_Init(&context)) {
+					assert(false);
+				}
+			}
+
+			~MD5Hash() {
+			}
+
+			virtual Hash& update(const ByteArray& data) SWIFTEN_OVERRIDE {
+				return updateInternal(data);
+			}
+
+			virtual Hash& update(const SafeByteArray& data) SWIFTEN_OVERRIDE {
+				return updateInternal(data);
+			}
+
+			virtual std::vector<unsigned char> getHash() {
+				assert(!finalized);
+				std::vector<unsigned char> result(CC_MD5_DIGEST_LENGTH);
+				CC_MD5_Final(vecptr(result), &context);
+				return result;
+			}
+
+		private:
+			template<typename ContainerType>
+			Hash& updateInternal(const ContainerType& data) {
+				assert(!finalized);
+				if (!CC_MD5_Update(&context, vecptr(data), boost::numeric_cast<CC_LONG>(data.size()))) {
+					assert(false);
+				}
+				return *this;
+			}
+
+		private:
+			CC_MD5_CTX context;
+			bool finalized;
+	};
+
+	template<typename T>
+	ByteArray getHMACSHA1Internal(const T& key, const ByteArray& data) {
+		std::vector<unsigned char> result(CC_SHA1_DIGEST_LENGTH);
+		CCHmac(kCCHmacAlgSHA1, vecptr(key), key.size(), vecptr(data), boost::numeric_cast<CC_LONG>(data.size()), vecptr(result));
+		return result;
+	}
+}
+
+CommonCryptoCryptoProvider::CommonCryptoCryptoProvider() {
+}
+
+CommonCryptoCryptoProvider::~CommonCryptoCryptoProvider() {
+}
+
+Hash* CommonCryptoCryptoProvider::createSHA1() {
+	return new SHA1Hash();
+}
+
+Hash* CommonCryptoCryptoProvider::createMD5() {
+	return new MD5Hash();
+}
+
+ByteArray CommonCryptoCryptoProvider::getHMACSHA1(const SafeByteArray& key, const ByteArray& data) {
+	return getHMACSHA1Internal(key, data);
+}
+
+ByteArray CommonCryptoCryptoProvider::getHMACSHA1(const ByteArray& key, const ByteArray& data) {
+	return getHMACSHA1Internal(key, data);
+}
+
+bool CommonCryptoCryptoProvider::isMD5AllowedForCrypto() const {
+	return true;
+}
+