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/*
* Phusion Passenger - https://www.phusionpassenger.com/
* Copyright (c) 2010-2018 Phusion Holding B.V.
*
* "Passenger", "Phusion Passenger" and "Union Station" are registered
* trademarks of Phusion Holding B.V.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef _PASSENGER_SECURITY_KIT_CRYPTO_H_
#define _PASSENGER_SECURITY_KIT_CRYPTO_H_
#include <boost/function.hpp>
#include <boost/thread.hpp>
#include <modp_b64.h>
#if BOOST_OS_MACOS
#include <Availability.h>
#ifndef __MAC_10_13
#define __MAC_10_13 101300
#endif
#include <CoreFoundation/CoreFoundation.h>
#include <Security/Security.h>
#define PRE_HIGH_SIERRA (__MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_13)
#else
#include <openssl/pem.h>
#include <openssl/rand.h>
#include <openssl/err.h>
#endif
#include <StaticString.h>
namespace Passenger {
#if BOOST_OS_MACOS
typedef SecKeyRef PUBKEY_TYPE;
#else
typedef RSA* PUBKEY_TYPE;
#endif
using namespace std;
using namespace boost;
using namespace oxt;
struct AESEncResult {
unsigned char *encrypted;
size_t encryptedLen;
unsigned char *key;
size_t keyLen;
unsigned char *iv;
size_t ivLen;
};
class Crypto {
private:
/**
* @returns new PUBKEY_TYPE; user is responsible for free (with freePubKey)
*/
PUBKEY_TYPE loadPubKey(const char *filename);
/**
* free a PUBKEY_TYPE (loaded with loadPubKey); may be NULL
*/
void freePubKey(PUBKEY_TYPE);
void logError(const StaticString &error);
/**
* log prefix using P_ERROR, and (library-specific) detail from either additional or global query
*/
#if BOOST_OS_MACOS
CFDataRef id;
// (additional needs to be defined as a CFErrorRef, void * won't work)
void logFreeErrorExtended(const StaticString &prefix, CFErrorRef &additional);
CFDictionaryRef createQueryDict(const char *label);
SecAccessRef createAccess(const char *cLabel);
OSStatus copyIdentityFromPKCS12File(const char *cPath, const char *cPassword, const char *cLabel);
CFDataRef genIV(size_t iv_size);
bool getKeyBytes(SecKeyRef cryptokey, void **target, size_t &len);
bool memoryBridge(CFDataRef input, void **target, size_t &len);
bool innerMemoryBridge(void *input, void **target, size_t len);
#else
void logErrorExtended(const StaticString &prefix);
#endif
public:
Crypto();
~Crypto();
/**
* Generates a nonce consisting of a timestamp (usec) and a random (base64) part.
*/
bool generateAndAppendNonce(string &nonce);
#if BOOST_OS_MACOS
bool generateRandomChars(unsigned char *rndChars, int rndLen);
#endif
/**
* Generate an AES key and encrypt dataChars with it. The resulting encrypted characters, together with the AES key
* and iv that were used appears in AESEncrypted. Memory is allocated for it, and it must be freed with freeAESEncrypted().
*
* N.B. only used in Enterprise (to enable additional services), but open sourced for transparency.
*/
bool encryptAES256(char *dataChars, size_t dataLen, AESEncResult &aesEnc);
/**
* Releases resources returned by encryptAES256().
*/
void freeAESEncrypted(AESEncResult &aesEnc);
/**
* Encrypt a (short) bit of date with specified public key. Memory is allocated for the result encryptedCharsPtr, which
* must be free()d manually.
*
* N.B. only used in Enterprise (to enable additional services), but open sourced for transparency.
*/
bool encryptRSA(unsigned char *dataChars, size_t dataLen,
string encryptPubKeyPath, unsigned char **encryptedCharsPtr, size_t &encryptedLen);
/**
* @returns true if specified signature is from the entity known by its (public) key at signaturePubKeyPath,
* and valid for speficied data.
*/
bool verifySignature(string signaturePubKeyPath, char *signatureChars, int signatureLen, string data);
};
} // namespace Passenger
#endif /* _PASSENGER_SECURITYKIT_CRYPTO_H_ */
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