webrtc/talk/base/nssidentity.h

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/*
* libjingle
* Copyright 2004--2008, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef TALK_BASE_NSSIDENTITY_H_
#define TALK_BASE_NSSIDENTITY_H_
#include <string>
#include "cert.h"
#include "nspr.h"
#include "hasht.h"
#include "keythi.h"
#include "talk/base/common.h"
#include "talk/base/logging.h"
#include "talk/base/scoped_ptr.h"
#include "talk/base/sslidentity.h"
namespace talk_base {
class NSSKeyPair {
public:
NSSKeyPair(SECKEYPrivateKey* privkey, SECKEYPublicKey* pubkey) :
privkey_(privkey), pubkey_(pubkey) {}
~NSSKeyPair();
// Generate a 1024-bit RSA key pair.
static NSSKeyPair* Generate();
NSSKeyPair* GetReference();
SECKEYPrivateKey* privkey() const { return privkey_; }
SECKEYPublicKey * pubkey() const { return pubkey_; }
private:
SECKEYPrivateKey* privkey_;
SECKEYPublicKey* pubkey_;
DISALLOW_EVIL_CONSTRUCTORS(NSSKeyPair);
};
class NSSCertificate : public SSLCertificate {
public:
static NSSCertificate* FromPEMString(const std::string& pem_string);
// The caller retains ownership of the argument to all the constructors,
// and the constructor makes a copy.
explicit NSSCertificate(CERTCertificate* cert);
explicit NSSCertificate(CERTCertList* cert_list);
virtual ~NSSCertificate() {
if (certificate_)
CERT_DestroyCertificate(certificate_);
}
virtual NSSCertificate* GetReference() const;
virtual std::string ToPEMString() const;
virtual void ToDER(Buffer* der_buffer) const;
virtual bool GetSignatureDigestAlgorithm(std::string* algorithm) const;
virtual bool ComputeDigest(const std::string& algorithm,
unsigned char* digest, std::size_t size,
std::size_t* length) const;
virtual bool GetChain(SSLCertChain** chain) const;
CERTCertificate* certificate() { return certificate_; }
// Performs minimal checks to determine if the list is a valid chain. This
// only checks that each certificate certifies the preceding certificate,
// and ignores many other certificate features such as expiration dates.
static bool IsValidChain(const CERTCertList* cert_list);
// Helper function to get the length of a digest
static bool GetDigestLength(const std::string& algorithm,
std::size_t* length);
// Comparison. Only the certificate itself is considered, not the chain.
bool Equals(const NSSCertificate* tocompare) const;
private:
NSSCertificate(CERTCertificate* cert, SSLCertChain* chain);
static bool GetDigestObject(const std::string& algorithm,
const SECHashObject** hash_object);
CERTCertificate* certificate_;
scoped_ptr<SSLCertChain> chain_;
DISALLOW_EVIL_CONSTRUCTORS(NSSCertificate);
};
// Represents a SSL key pair and certificate for NSS.
class NSSIdentity : public SSLIdentity {
public:
static NSSIdentity* Generate(const std::string& common_name);
static NSSIdentity* GenerateForTest(const SSLIdentityParams& params);
static SSLIdentity* FromPEMStrings(const std::string& private_key,
const std::string& certificate);
virtual ~NSSIdentity() {
LOG(LS_INFO) << "Destroying NSS identity";
}
virtual NSSIdentity* GetReference() const;
virtual NSSCertificate& certificate() const;
NSSKeyPair* keypair() const { return keypair_.get(); }
private:
NSSIdentity(NSSKeyPair* keypair, NSSCertificate* cert) :
keypair_(keypair), certificate_(cert) {}
static NSSIdentity* GenerateInternal(const SSLIdentityParams& params);
talk_base::scoped_ptr<NSSKeyPair> keypair_;
talk_base::scoped_ptr<NSSCertificate> certificate_;
DISALLOW_EVIL_CONSTRUCTORS(NSSIdentity);
};
} // namespace talk_base
#endif // TALK_BASE_NSSIDENTITY_H_