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// 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 "net/cert/crl_set.h"
#include "base/logging.h"
#include "base/time/time.h"
namespace net {
CRLSet::CRLSet()
: sequence_(0),
not_after_(0) {
}
CRLSet::~CRLSet() {
}
CRLSet::Result CRLSet::CheckSPKI(const base::StringPiece& spki_hash) const {
for (std::vector<std::string>::const_iterator i = blocked_spkis_.begin();
i != blocked_spkis_.end(); ++i) {
if (spki_hash.size() == i->size() &&
memcmp(spki_hash.data(), i->data(), i->size()) == 0) {
return REVOKED;
}
}
return GOOD;
}
CRLSet::Result CRLSet::CheckSerial(
const base::StringPiece& serial_number,
const base::StringPiece& issuer_spki_hash) const {
base::StringPiece serial(serial_number);
if (!serial.empty() && (serial[0] & 0x80) != 0) {
// This serial number is negative but the process which generates CRL sets
// will reject any certificates with negative serial numbers as invalid.
return UNKNOWN;
}
// Remove any leading zero bytes.
while (serial.size() > 1 && serial[0] == 0x00)
serial.remove_prefix(1);
base::hash_map<std::string, size_t>::const_iterator crl_index =
crls_index_by_issuer_.find(issuer_spki_hash.as_string());
if (crl_index == crls_index_by_issuer_.end())
return UNKNOWN;
const std::vector<std::string>& serials = crls_[crl_index->second].second;
for (std::vector<std::string>::const_iterator i = serials.begin();
i != serials.end(); ++i) {
if (base::StringPiece(*i) == serial)
return REVOKED;
}
return GOOD;
}
bool CRLSet::IsExpired() const {
if (not_after_ == 0)
return false;
uint64_t now = base::Time::Now().ToTimeT();
return now > not_after_;
}
uint32_t CRLSet::sequence() const {
return sequence_;
}
const CRLSet::CRLList& CRLSet::crls() const {
return crls_;
}
// static
CRLSet* CRLSet::EmptyCRLSetForTesting() {
return ForTesting(false, NULL, "");
}
CRLSet* CRLSet::ExpiredCRLSetForTesting() {
return ForTesting(true, NULL, "");
}
// static
CRLSet* CRLSet::ForTesting(bool is_expired,
const SHA256HashValue* issuer_spki,
const std::string& serial_number) {
CRLSet* crl_set = new CRLSet;
if (is_expired)
crl_set->not_after_ = 1;
if (issuer_spki != NULL) {
const std::string spki(reinterpret_cast<const char*>(issuer_spki->data),
sizeof(issuer_spki->data));
crl_set->crls_.push_back(make_pair(spki, std::vector<std::string>()));
crl_set->crls_index_by_issuer_[spki] = 0;
}
if (!serial_number.empty())
crl_set->crls_[0].second.push_back(serial_number);
return crl_set;
}
} // namespace net
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