blob: 5194835aa5211f2d77f0f15b914e97ee6f30307c [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <string>
#include <unordered_map>
#include <utility>
#include <vector>
#include "base/memory/ref_counted.h"
#include "base/strings/string_piece.h"
#include "net/base/net_export.h"
#include "net/cert/x509_cert_types.h"
#include "starboard/types.h"
namespace net {
// A CRLSet is a structure that lists the serial numbers of revoked
// certificates from a number of issuers where issuers are identified by the
// SHA256 of their SubjectPublicKeyInfo.
// CRLSetStorage is responsible for creating CRLSet instances.
class NET_EXPORT CRLSet : public base::RefCountedThreadSafe<CRLSet> {
enum Result {
REVOKED, // the certificate should be rejected.
UNKNOWN, // the CRL for the certificate is not included in the set.
GOOD, // the certificate is not listed.
// Parses the bytes in |data| and, on success, puts a new CRLSet in
// |out_crl_set| and returns true.
static bool Parse(base::StringPiece data, scoped_refptr<CRLSet>* out_crl_set);
// CheckSPKI checks whether the given SPKI has been listed as blocked.
// spki_hash: the SHA256 of the SubjectPublicKeyInfo of the certificate.
Result CheckSPKI(const base::StringPiece& spki_hash) const;
// CheckSerial returns the information contained in the set for a given
// certificate:
// serial_number: the serial number of the certificate
// issuer_spki_hash: the SHA256 of the SubjectPublicKeyInfo of the CRL
// signer
Result CheckSerial(
const base::StringPiece& serial_number,
const base::StringPiece& issuer_spki_hash) const;
// CheckSubject returns the information contained in the set for a given,
// encoded subject name and SPKI hash. The subject name is encoded as a DER
// X.501 Name (see
Result CheckSubject(const base::StringPiece& asn1_subject,
const base::StringPiece& spki_hash) const;
// IsExpired returns true iff the current time is past the NotAfter time
// specified in the CRLSet.
bool IsExpired() const;
// sequence returns the sequence number of this CRL set. CRL sets generated
// by the same source are given strictly monotonically increasing sequence
// numbers.
uint32_t sequence() const;
// CRLList contains a map of (issuer SPKI hash, revoked serial numbers)
// pairs.
typedef std::unordered_map<std::string, std::vector<std::string>> CRLList;
// crls returns the internal state of this CRLSet. It should only be used in
// testing.
const CRLList& CrlsForTesting() const;
// EmptyCRLSetForTesting returns a valid, but empty, CRLSet for unit tests.
static scoped_refptr<CRLSet> EmptyCRLSetForTesting();
// ExpiredCRLSetForTesting returns a expired, empty CRLSet for unit tests.
static scoped_refptr<CRLSet> ExpiredCRLSetForTesting();
// ForTesting returns a CRLSet for testing. If |is_expired| is true, calling
// IsExpired on the result will return true. If |issuer_spki| is not NULL,
// the CRLSet will cover certificates issued by that SPKI. If |serial_number|
// is not empty, then that big-endian serial number will be considered to
// have been revoked by |issuer_spki|. If |common_name| is not empty then the
// CRLSet will consider certificates with a subject consisting only of that
// common name to be revoked unless they match an SPKI hash from
// |acceptable_spki_hashes_for_cn|.
static scoped_refptr<CRLSet> ForTesting(
bool is_expired,
const SHA256HashValue* issuer_spki,
const std::string& serial_number,
const std::string common_name,
const std::vector<std::string> acceptable_spki_hashes_for_cn);
friend class base::RefCountedThreadSafe<CRLSet>;
uint32_t sequence_;
// not_after_ contains the time, in UNIX epoch seconds, after which the
// CRLSet should be considered stale, or 0 if no such time was given.
uint64_t not_after_;
// crls_ is a map from the SHA-256 hash of an X.501 subject name to a list
// of revoked serial numbers.
CRLList crls_;
// blocked_spkis_ contains the SHA256 hashes of SPKIs which are to be blocked
// no matter where in a certificate chain they might appear.
std::vector<std::string> blocked_spkis_;
// limited_subjects_ is a map from the SHA256 hash of an X.501 subject name
// to a list of allowed SPKI hashes for certificates with that subject name.
std::unordered_map<std::string, std::vector<std::string>> limited_subjects_;
} // namespace net
#endif // NET_CERT_CRL_SET_H_