Update NSS to 3.41

This commit is contained in:
wolfbeast 2018-12-15 01:42:53 +01:00 committed by Roy Tam
commit 5f0986e66f
540 changed files with 49568 additions and 10631 deletions

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This code is made available to you under your choice of the following sets
* of licensing terms:
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
/* Copyright 2018 Mozilla Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// This file provides some implementation-specific test utilities. This is only
// necessary because some PSM xpcshell test utilities overlap in functionality
// with these test utilities, so the underlying implementation is shared.
#ifndef mozilla_pkix_test_pkixtestnss_h
#define mozilla_pkix_test_pkixtestnss_h
#include <keyhi.h>
#include <keythi.h>
#include "mozpkix/nss_scoped_ptrs.h"
#include "mozpkix/test/pkixtestutil.h"
namespace mozilla {
namespace pkix {
namespace test {
TestKeyPair* CreateTestKeyPair(const TestPublicKeyAlgorithm publicKeyAlg,
const ScopedSECKEYPublicKey& publicKey,
const ScopedSECKEYPrivateKey& privateKey);
}
}
} // namespace mozilla::pkix::test
#endif // mozilla_pkix_test_pkixtestnss_h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This code is made available to you under your choice of the following sets
* of licensing terms:
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
/* Copyright 2013 Mozilla Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef mozilla_pkix_test_pkixtestutil_h
#define mozilla_pkix_test_pkixtestutil_h
#include <cstdint>
#include <cstring>
#include <ctime>
#include <string>
#include "mozpkix/pkixtypes.h"
namespace mozilla {
namespace pkix {
namespace test {
typedef std::basic_string<uint8_t> ByteString;
inline bool ENCODING_FAILED(const ByteString& bs) { return bs.empty(); }
template <size_t L>
inline ByteString BytesToByteString(const uint8_t (&bytes)[L]) {
return ByteString(bytes, L);
}
// XXX: Ideally, we should define this instead:
//
// template <typename T, std::size_t N>
// constexpr inline std::size_t
// ArrayLength(T (&)[N])
// {
// return N;
// }
//
// However, we don't because not all supported compilers support constexpr,
// and we need to calculate array lengths in static_assert sometimes.
//
// XXX: Evaluates its argument twice
#define MOZILLA_PKIX_ARRAY_LENGTH(x) (sizeof(x) / sizeof((x)[0]))
bool InputEqualsByteString(Input input, const ByteString& bs);
ByteString InputToByteString(Input input);
// python DottedOIDToCode.py --tlv id-kp-OCSPSigning 1.3.6.1.5.5.7.3.9
static const uint8_t tlv_id_kp_OCSPSigning[] = {0x06, 0x08, 0x2b, 0x06, 0x01,
0x05, 0x05, 0x07, 0x03, 0x09};
// python DottedOIDToCode.py --tlv id-kp-serverAuth 1.3.6.1.5.5.7.3.1
static const uint8_t tlv_id_kp_serverAuth[] = {0x06, 0x08, 0x2b, 0x06, 0x01,
0x05, 0x05, 0x07, 0x03, 0x01};
enum class TestDigestAlgorithmID {
MD2,
MD5,
SHA1,
SHA224,
SHA256,
SHA384,
SHA512,
};
struct TestPublicKeyAlgorithm {
explicit TestPublicKeyAlgorithm(const ByteString& aAlgorithmIdentifier)
: algorithmIdentifier(aAlgorithmIdentifier) {}
bool operator==(const TestPublicKeyAlgorithm& other) const {
return algorithmIdentifier == other.algorithmIdentifier;
}
ByteString algorithmIdentifier;
};
ByteString DSS_P();
ByteString DSS_Q();
ByteString DSS_G();
TestPublicKeyAlgorithm DSS();
TestPublicKeyAlgorithm RSA_PKCS1();
struct TestSignatureAlgorithm {
TestSignatureAlgorithm(const TestPublicKeyAlgorithm& publicKeyAlg,
TestDigestAlgorithmID digestAlg,
const ByteString& algorithmIdentifier, bool accepted);
TestPublicKeyAlgorithm publicKeyAlg;
TestDigestAlgorithmID digestAlg;
ByteString algorithmIdentifier;
bool accepted;
};
TestSignatureAlgorithm md2WithRSAEncryption();
TestSignatureAlgorithm md5WithRSAEncryption();
TestSignatureAlgorithm sha1WithRSAEncryption();
TestSignatureAlgorithm sha256WithRSAEncryption();
// e.g. YMDHMS(2016, 12, 31, 1, 23, 45) => 2016-12-31:01:23:45 (GMT)
mozilla::pkix::Time YMDHMS(uint16_t year, uint16_t month, uint16_t day,
uint16_t hour, uint16_t minutes, uint16_t seconds);
ByteString TLV(uint8_t tag, size_t length, const ByteString& value);
inline ByteString TLV(uint8_t tag, const ByteString& value) {
return TLV(tag, value.length(), value);
}
// Although we can't enforce it without relying on Cuser-defined literals,
// which aren't supported by all of our compilers yet, you should only pass
// string literals as the last parameter to the following two functions.
template <size_t N>
inline ByteString TLV(uint8_t tag, const char (&value)[N]) {
static_assert(N > 0, "cannot have string literal of size 0");
assert(value[N - 1] == 0);
return TLV(tag, ByteString(reinterpret_cast<const uint8_t*>(&value), N - 1));
}
template <size_t N>
inline ByteString TLV(uint8_t tag, size_t length, const char (&value)[N]) {
static_assert(N > 0, "cannot have string literal of size 0");
assert(value[N - 1] == 0);
return TLV(tag, length,
ByteString(reinterpret_cast<const uint8_t*>(&value), N - 1));
}
ByteString Boolean(bool value);
ByteString Integer(long value);
ByteString CN(const ByteString&, uint8_t encodingTag = 0x0c /*UTF8String*/);
inline ByteString CN(const char* value,
uint8_t encodingTag = 0x0c /*UTF8String*/) {
return CN(
ByteString(reinterpret_cast<const uint8_t*>(value), std::strlen(value)),
encodingTag);
}
ByteString OU(const ByteString&, uint8_t encodingTag = 0x0c /*UTF8String*/);
inline ByteString OU(const char* value,
uint8_t encodingTag = 0x0c /*UTF8String*/) {
return OU(
ByteString(reinterpret_cast<const uint8_t*>(value), std::strlen(value)),
encodingTag);
}
ByteString emailAddress(const ByteString&);
inline ByteString emailAddress(const char* value) {
return emailAddress(
ByteString(reinterpret_cast<const uint8_t*>(value), std::strlen(value)));
}
// RelativeDistinguishedName ::=
// SET SIZE (1..MAX) OF AttributeTypeAndValue
//
ByteString RDN(const ByteString& avas);
// Name ::= CHOICE { -- only one possibility for now --
// rdnSequence RDNSequence }
//
// RDNSequence ::= SEQUENCE OF RelativeDistinguishedName
//
ByteString Name(const ByteString& rdns);
inline ByteString CNToDERName(const ByteString& cn) {
return Name(RDN(CN(cn)));
}
inline ByteString CNToDERName(const char* cn) { return Name(RDN(CN(cn))); }
// GeneralName ::= CHOICE {
// otherName [0] OtherName,
// rfc822Name [1] IA5String,
// dNSName [2] IA5String,
// x400Address [3] ORAddress,
// directoryName [4] Name,
// ediPartyName [5] EDIPartyName,
// uniformResourceIdentifier [6] IA5String,
// iPAddress [7] OCTET STRING,
// registeredID [8] OBJECT IDENTIFIER }
inline ByteString RFC822Name(const ByteString& name) {
// (2 << 6) means "context-specific", 1 is the GeneralName tag.
return TLV((2 << 6) | 1, name);
}
template <size_t L>
inline ByteString RFC822Name(const char (&bytes)[L]) {
return RFC822Name(
ByteString(reinterpret_cast<const uint8_t*>(&bytes), L - 1));
}
inline ByteString DNSName(const ByteString& name) {
// (2 << 6) means "context-specific", 2 is the GeneralName tag.
return TLV((2 << 6) | 2, name);
}
template <size_t L>
inline ByteString DNSName(const char (&bytes)[L]) {
return DNSName(ByteString(reinterpret_cast<const uint8_t*>(&bytes), L - 1));
}
inline ByteString DirectoryName(const ByteString& name) {
// (2 << 6) means "context-specific", (1 << 5) means "constructed", and 4 is
// the DirectoryName tag.
return TLV((2 << 6) | (1 << 5) | 4, name);
}
inline ByteString IPAddress() {
// (2 << 6) means "context-specific", 7 is the GeneralName tag.
return TLV((2 << 6) | 7, ByteString());
}
template <size_t L>
inline ByteString IPAddress(const uint8_t (&bytes)[L]) {
// (2 << 6) means "context-specific", 7 is the GeneralName tag.
return TLV((2 << 6) | 7, ByteString(bytes, L));
}
// Names should be zero or more GeneralNames, like DNSName and IPAddress return,
// concatenated together.
//
// CreatedEncodedSubjectAltName(ByteString()) results in a SAN with an empty
// sequence. CreateEmptyEncodedSubjectName() results in a SAN without any
// sequence.
ByteString CreateEncodedSubjectAltName(const ByteString& names);
ByteString CreateEncodedEmptySubjectAltName();
class TestKeyPair {
public:
virtual ~TestKeyPair() {}
const TestPublicKeyAlgorithm publicKeyAlg;
// The DER encoding of the entire SubjectPublicKeyInfo structure. This is
// what is encoded in certificates.
const ByteString subjectPublicKeyInfo;
// The DER encoding of subjectPublicKeyInfo.subjectPublicKey. This is what is
// hashed to create CertIDs for OCSP.
const ByteString subjectPublicKey;
virtual Result SignData(const ByteString& tbs,
const TestSignatureAlgorithm& signatureAlgorithm,
/*out*/ ByteString& signature) const = 0;
virtual TestKeyPair* Clone() const = 0;
protected:
TestKeyPair(const TestPublicKeyAlgorithm& publicKeyAlg,
const ByteString& spk);
TestKeyPair(const TestKeyPair&) = delete;
void operator=(const TestKeyPair&) = delete;
};
TestKeyPair* CloneReusedKeyPair();
TestKeyPair* GenerateKeyPair();
TestKeyPair* GenerateDSSKeyPair();
inline void DeleteTestKeyPair(TestKeyPair* keyPair) { delete keyPair; }
typedef std::unique_ptr<TestKeyPair> ScopedTestKeyPair;
Result TestVerifyECDSASignedDigest(const SignedDigest& signedDigest,
Input subjectPublicKeyInfo);
Result TestVerifyRSAPKCS1SignedDigest(const SignedDigest& signedDigest,
Input subjectPublicKeyInfo);
Result TestDigestBuf(Input item, DigestAlgorithm digestAlg,
/*out*/ uint8_t* digestBuf, size_t digestBufLen);
// Replace one substring in item with another of the same length, but only if
// the substring was found exactly once. The "same length" restriction is
// useful for avoiding invalidating lengths encoded within the item. The
// "only once" restriction is helpful for avoiding making accidental changes.
//
// The string to search for must be 8 or more bytes long so that it is
// extremely unlikely that there will ever be any false positive matches
// in digital signatures, keys, hashes, etc.
Result TamperOnce(/*in/out*/ ByteString& item, const ByteString& from,
const ByteString& to);
///////////////////////////////////////////////////////////////////////////////
// Encode Certificates
enum Version { v1 = 0, v2 = 1, v3 = 2 };
// signature is assumed to be the DER encoding of an AlgorithmIdentifer. It is
// put into the signature field of the TBSCertificate. In most cases, it will
// be the same as signatureAlgorithm, which is the algorithm actually used
// to sign the certificate.
// serialNumber is assumed to be the DER encoding of an INTEGER.
//
// If extensions is null, then no extensions will be encoded. Otherwise,
// extensions must point to an array of ByteStrings, terminated with an empty
// ByteString. (If the first item of the array is empty then an empty
// Extensions sequence will be encoded.)
ByteString CreateEncodedCertificate(
long version, const TestSignatureAlgorithm& signature,
const ByteString& serialNumber, const ByteString& issuerNameDER,
time_t notBefore, time_t notAfter, const ByteString& subjectNameDER,
const TestKeyPair& subjectKeyPair,
/*optional*/ const ByteString* extensions, const TestKeyPair& issuerKeyPair,
const TestSignatureAlgorithm& signatureAlgorithm);
ByteString CreateEncodedSerialNumber(long value);
enum class Critical { No = 0, Yes = 1 };
ByteString CreateEncodedBasicConstraints(
bool isCA,
/*optional in*/ const long* pathLenConstraint, Critical critical);
// Creates a DER-encoded extKeyUsage extension with one EKU OID.
ByteString CreateEncodedEKUExtension(Input eku, Critical critical);
///////////////////////////////////////////////////////////////////////////////
// Encode OCSP responses
class OCSPResponseExtension final {
public:
OCSPResponseExtension();
ByteString id;
bool critical;
ByteString value;
OCSPResponseExtension* next;
};
class OCSPResponseContext final {
public:
OCSPResponseContext(const CertID& certID, std::time_t time);
const CertID& certID;
// TODO(bug 980538): add a way to specify what certificates are included.
// The fields below are in the order that they appear in an OCSP response.
enum OCSPResponseStatus {
successful = 0,
malformedRequest = 1,
internalError = 2,
tryLater = 3,
// 4 is not used
sigRequired = 5,
unauthorized = 6,
};
uint8_t responseStatus; // an OCSPResponseStatus or an invalid value
bool skipResponseBytes; // If true, don't include responseBytes
// responderID
ByteString signerNameDER; // If set, responderID will use the byName
// form; otherwise responderID will use the
// byKeyHash form.
std::time_t producedAt;
// SingleResponse extensions (for the certID given in the constructor).
OCSPResponseExtension* singleExtensions;
// ResponseData extensions.
OCSPResponseExtension* responseExtensions;
bool includeEmptyExtensions; // If true, include the extension wrapper
// regardless of if there are any actual
// extensions.
ScopedTestKeyPair signerKeyPair;
TestSignatureAlgorithm signatureAlgorithm;
bool badSignature; // If true, alter the signature to fail verification
const ByteString* certs; // optional; array terminated by an empty string
// The following fields are on a per-SingleResponse basis. In the future we
// may support including multiple SingleResponses per response.
enum CertStatus {
good = 0,
revoked = 1,
unknown = 2,
};
uint8_t certStatus; // CertStatus or an invalid value
std::time_t revocationTime; // For certStatus == revoked
std::time_t thisUpdate;
std::time_t nextUpdate;
bool includeNextUpdate;
};
ByteString CreateEncodedOCSPResponse(OCSPResponseContext& context);
}
}
} // namespace mozilla::pkix::test
#endif // mozilla_pkix_test_pkixtestutil_h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This code is made available to you under your choice of the following sets
* of licensing terms:
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
/* Copyright 2013 Mozilla Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef mozilla_pkix_Input_h
#define mozilla_pkix_Input_h
#include <algorithm>
#include "mozpkix/Result.h"
#include "stdint.h"
namespace mozilla {
namespace pkix {
class Reader;
// An Input is a safety-oriented immutable weak reference to a array of bytes
// of a known size. The data can only be legally accessed by constructing a
// Reader object, which guarantees all accesses to the data are memory safe.
// Neither Input not Reader provide any facilities for modifying the data
// they reference.
//
// Inputs are small and should usually be passed by value, not by reference,
// though for inline functions the distinction doesn't matter:
//
// Result GoodExample(Input input);
// Result BadExample(const Input& input);
// Result WorseExample(const uint8_t* input, size_t len);
//
// Note that in the example, GoodExample has the same performance
// characteristics as WorseExample, but with much better safety guarantees.
class Input final {
public:
typedef uint16_t size_type;
// This constructor is useful for inputs that are statically known to be of a
// fixed size, e.g.:
//
// static const uint8_t EXPECTED_BYTES[] = { 0x00, 0x01, 0x02 };
// const Input expected(EXPECTED_BYTES);
//
// This is equivalent to (and preferred over):
//
// static const uint8_t EXPECTED_BYTES[] = { 0x00, 0x01, 0x02 };
// Input expected;
// Result rv = expected.Init(EXPECTED_BYTES, sizeof EXPECTED_BYTES);
template <size_type N>
explicit Input(const uint8_t (&aData)[N]) : data(aData), len(N) {}
// Construct a valid, empty, Init-able Input.
Input() : data(nullptr), len(0u) {}
// This is intentionally not explicit in order to allow value semantics.
Input(const Input&) = default;
// Initialize the input. data must be non-null and len must be less than
// 65536. Init may not be called more than once.
Result Init(const uint8_t* aData, size_t aLen) {
if (this->data) {
// already initialized
return Result::FATAL_ERROR_INVALID_ARGS;
}
if (!aData || aLen > 0xffffu) {
// input too large
return Result::ERROR_BAD_DER;
}
this->data = aData;
this->len = aLen;
return Success;
}
// Initialize the input to be equivalent to the given input. Init may not be
// called more than once.
//
// This is basically operator=, but it wasn't given that name because
// normally callers do not check the result of operator=, and normally
// operator= can be used multiple times.
Result Init(Input other) { return Init(other.data, other.len); }
// Returns the length of the input.
//
// Having the return type be size_type instead of size_t avoids the need for
// callers to ensure that the result is small enough.
size_type GetLength() const { return static_cast<size_type>(len); }
// Don't use this. It is here because we have some "friend" functions that we
// don't want to declare in this header file.
const uint8_t* UnsafeGetData() const { return data; }
private:
const uint8_t* data;
size_t len;
void operator=(const Input&) = delete; // Use Init instead.
};
inline bool InputsAreEqual(const Input& a, const Input& b) {
return a.GetLength() == b.GetLength() &&
std::equal(a.UnsafeGetData(), a.UnsafeGetData() + a.GetLength(),
b.UnsafeGetData());
}
// An Reader is a cursor/iterator through the contents of an Input, designed to
// maximize safety during parsing while minimizing the performance cost of that
// safety. In particular, all methods do strict bounds checking to ensure
// buffer overflows are impossible, and they are all inline so that the
// compiler can coalesce as many of those checks together as possible.
//
// In general, Reader allows for one byte of lookahead and no backtracking.
// However, the Match* functions internally may have more lookahead.
class Reader final {
public:
Reader() : input(nullptr), end(nullptr) {}
explicit Reader(Input aInput)
: input(aInput.UnsafeGetData()),
end(aInput.UnsafeGetData() + aInput.GetLength()) {}
Result Init(Input aInput) {
if (this->input) {
return Result::FATAL_ERROR_INVALID_ARGS;
}
this->input = aInput.UnsafeGetData();
this->end = aInput.UnsafeGetData() + aInput.GetLength();
return Success;
}
bool Peek(uint8_t expectedByte) const {
return input < end && *input == expectedByte;
}
Result Read(uint8_t& out) {
Result rv = EnsureLength(1);
if (rv != Success) {
return rv;
}
out = *input++;
return Success;
}
Result Read(uint16_t& out) {
Result rv = EnsureLength(2);
if (rv != Success) {
return rv;
}
out = *input++;
out <<= 8u;
out |= *input++;
return Success;
}
template <Input::size_type N>
bool MatchRest(const uint8_t (&toMatch)[N]) {
// Normally we use EnsureLength which compares (input + len < end), but
// here we want to be sure that there is nothing following the matched
// bytes
if (static_cast<size_t>(end - input) != N) {
return false;
}
if (!std::equal(input, end, toMatch)) {
return false;
}
input = end;
return true;
}
bool MatchRest(Input toMatch) {
// Normally we use EnsureLength which compares (input + len < end), but
// here we want to be sure that there is nothing following the matched
// bytes
size_t remaining = static_cast<size_t>(end - input);
if (toMatch.GetLength() != remaining) {
return false;
}
if (!std::equal(input, end, toMatch.UnsafeGetData())) {
return false;
}
input = end;
return true;
}
Result Skip(Input::size_type len) {
Result rv = EnsureLength(len);
if (rv != Success) {
return rv;
}
input += len;
return Success;
}
Result Skip(Input::size_type len, Reader& skipped) {
Result rv = EnsureLength(len);
if (rv != Success) {
return rv;
}
rv = skipped.Init(input, len);
if (rv != Success) {
return rv;
}
input += len;
return Success;
}
Result Skip(Input::size_type len, /*out*/ Input& skipped) {
Result rv = EnsureLength(len);
if (rv != Success) {
return rv;
}
rv = skipped.Init(input, len);
if (rv != Success) {
return rv;
}
input += len;
return Success;
}
void SkipToEnd() { input = end; }
Result SkipToEnd(/*out*/ Input& skipped) {
return Skip(static_cast<Input::size_type>(end - input), skipped);
}
Result EnsureLength(Input::size_type len) {
if (static_cast<size_t>(end - input) < len) {
return Result::ERROR_BAD_DER;
}
return Success;
}
bool AtEnd() const { return input == end; }
class Mark final {
public:
Mark(const Mark&) = default; // Intentionally not explicit.
private:
friend class Reader;
Mark(const Reader& aInput, const uint8_t* aMark)
: input(aInput), mark(aMark) {}
const Reader& input;
const uint8_t* const mark;
void operator=(const Mark&) = delete;
};
Mark GetMark() const { return Mark(*this, input); }
Result GetInput(const Mark& mark, /*out*/ Input& item) {
if (&mark.input != this || mark.mark > input) {
return NotReached("invalid mark", Result::FATAL_ERROR_INVALID_ARGS);
}
return item.Init(mark.mark,
static_cast<Input::size_type>(input - mark.mark));
}
private:
Result Init(const uint8_t* data, Input::size_type len) {
if (input) {
// already initialized
return Result::FATAL_ERROR_INVALID_ARGS;
}
input = data;
end = data + len;
return Success;
}
const uint8_t* input;
const uint8_t* end;
Reader(const Reader&) = delete;
void operator=(const Reader&) = delete;
};
inline bool InputContains(const Input& input, uint8_t toFind) {
Reader reader(input);
for (;;) {
uint8_t b;
if (reader.Read(b) != Success) {
return false;
}
if (b == toFind) {
return true;
}
}
}
}
} // namespace mozilla::pkix
#endif // mozilla_pkix_Input_h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This code is made available to you under your choice of the following sets
* of licensing terms:
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
/* Copyright 2013 Mozilla Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef mozilla_pkix_Result_h
#define mozilla_pkix_Result_h
#include <cassert>
namespace mozilla {
namespace pkix {
static const unsigned int FATAL_ERROR_FLAG = 0x800;
// ----------------------------------------------------------------------------
// SELECTED ERROR CODE EXPLANATIONS
//
// Result::ERROR_UNTRUSTED_CERT
// means that the end-entity certificate was actively distrusted.
// Result::ERROR_UNTRUSTED_ISSUER
// means that path building failed because of active distrust.
// Result::ERROR_INVALID_DER_TIME
// means the DER-encoded time was unexpected, such as being before the
// UNIX epoch (allowed by X500, but not valid here).
// Result::ERROR_EXPIRED_CERTIFICATE
// means the end entity certificate expired.
// Result::ERROR_EXPIRED_ISSUER_CERTIFICATE
// means the CA certificate expired.
// Result::ERROR_UNKNOWN_ISSUER
// means that the CA could not be found in the root store.
// Result::ERROR_POLICY_VALIDATION_FAILED
// means that an encoded policy could not be applied or wasn't present
// when expected. Usually this is in the context of Extended Validation.
// Result::ERROR_BAD_CERT_DOMAIN
// means that the certificate's name couldn't be matched to the
// reference identifier.
// Result::ERROR_CERT_NOT_IN_NAME_SPACE
// typically means the certificate violates name constraints applied
// by the issuer.
// Result::ERROR_BAD_DER
// means the input was improperly encoded.
// Result::ERROR_UNKNOWN_ERROR
// means that an external library (NSS) provided an error we didn't
// anticipate. See the map below in Result.h to add new ones.
// Result::FATAL_ERROR_LIBRARY_FAILURE
// is an unexpected fatal error indicating a library had an unexpected
// failure, and we can't proceed.
// Result::FATAL_ERROR_INVALID_ARGS
// means that we violated our own expectations on inputs and there's a
// bug somewhere.
// Result::FATAL_ERROR_INVALID_STATE
// means that we violated our own expectations on state and there's a
// bug somewhere.
// Result::FATAL_ERROR_NO_MEMORY
// means a memory allocation failed, prohibiting validation.
// ----------------------------------------------------------------------------
// The first argument to MOZILLA_PKIX_MAP() is used for building the mapping
// from error code to error name in MapResultToName.
//
// The second argument is for defining the value for the enum literal in the
// Result enum class.
//
// The third argument to MOZILLA_PKIX_MAP() is used, along with the first
// argument, for maintaining the mapping of mozilla::pkix error codes to
// NSS/NSPR error codes in pkixnss.cpp.
#define MOZILLA_PKIX_MAP_LIST \
MOZILLA_PKIX_MAP(Success, 0, 0) \
MOZILLA_PKIX_MAP(ERROR_BAD_DER, 1, SEC_ERROR_BAD_DER) \
MOZILLA_PKIX_MAP(ERROR_CA_CERT_INVALID, 2, SEC_ERROR_CA_CERT_INVALID) \
MOZILLA_PKIX_MAP(ERROR_BAD_SIGNATURE, 3, SEC_ERROR_BAD_SIGNATURE) \
MOZILLA_PKIX_MAP(ERROR_CERT_BAD_ACCESS_LOCATION, 4, \
SEC_ERROR_CERT_BAD_ACCESS_LOCATION) \
MOZILLA_PKIX_MAP(ERROR_CERT_NOT_IN_NAME_SPACE, 5, \
SEC_ERROR_CERT_NOT_IN_NAME_SPACE) \
MOZILLA_PKIX_MAP(ERROR_CERT_SIGNATURE_ALGORITHM_DISABLED, 6, \
SEC_ERROR_CERT_SIGNATURE_ALGORITHM_DISABLED) \
MOZILLA_PKIX_MAP(ERROR_CONNECT_REFUSED, 7, PR_CONNECT_REFUSED_ERROR) \
MOZILLA_PKIX_MAP(ERROR_EXPIRED_CERTIFICATE, 8, \
SEC_ERROR_EXPIRED_CERTIFICATE) \
MOZILLA_PKIX_MAP(ERROR_EXTENSION_VALUE_INVALID, 9, \
SEC_ERROR_EXTENSION_VALUE_INVALID) \
MOZILLA_PKIX_MAP(ERROR_INADEQUATE_CERT_TYPE, 10, \
SEC_ERROR_INADEQUATE_CERT_TYPE) \
MOZILLA_PKIX_MAP(ERROR_INADEQUATE_KEY_USAGE, 11, \
SEC_ERROR_INADEQUATE_KEY_USAGE) \
MOZILLA_PKIX_MAP(ERROR_INVALID_ALGORITHM, 12, SEC_ERROR_INVALID_ALGORITHM) \
MOZILLA_PKIX_MAP(ERROR_INVALID_DER_TIME, 13, SEC_ERROR_INVALID_TIME) \
MOZILLA_PKIX_MAP(ERROR_KEY_PINNING_FAILURE, 14, \
MOZILLA_PKIX_ERROR_KEY_PINNING_FAILURE) \
MOZILLA_PKIX_MAP(ERROR_PATH_LEN_CONSTRAINT_INVALID, 15, \
SEC_ERROR_PATH_LEN_CONSTRAINT_INVALID) \
MOZILLA_PKIX_MAP(ERROR_POLICY_VALIDATION_FAILED, 16, \
SEC_ERROR_POLICY_VALIDATION_FAILED) \
MOZILLA_PKIX_MAP(ERROR_REVOKED_CERTIFICATE, 17, \
SEC_ERROR_REVOKED_CERTIFICATE) \
MOZILLA_PKIX_MAP(ERROR_UNKNOWN_CRITICAL_EXTENSION, 18, \
SEC_ERROR_UNKNOWN_CRITICAL_EXTENSION) \
MOZILLA_PKIX_MAP(ERROR_UNKNOWN_ERROR, 19, PR_UNKNOWN_ERROR) \
MOZILLA_PKIX_MAP(ERROR_UNKNOWN_ISSUER, 20, SEC_ERROR_UNKNOWN_ISSUER) \
MOZILLA_PKIX_MAP(ERROR_UNTRUSTED_CERT, 21, SEC_ERROR_UNTRUSTED_CERT) \
MOZILLA_PKIX_MAP(ERROR_UNTRUSTED_ISSUER, 22, SEC_ERROR_UNTRUSTED_ISSUER) \
MOZILLA_PKIX_MAP(ERROR_OCSP_BAD_SIGNATURE, 23, SEC_ERROR_OCSP_BAD_SIGNATURE) \
MOZILLA_PKIX_MAP(ERROR_OCSP_INVALID_SIGNING_CERT, 24, \
SEC_ERROR_OCSP_INVALID_SIGNING_CERT) \
MOZILLA_PKIX_MAP(ERROR_OCSP_MALFORMED_REQUEST, 25, \
SEC_ERROR_OCSP_MALFORMED_REQUEST) \
MOZILLA_PKIX_MAP(ERROR_OCSP_MALFORMED_RESPONSE, 26, \
SEC_ERROR_OCSP_MALFORMED_RESPONSE) \
MOZILLA_PKIX_MAP(ERROR_OCSP_OLD_RESPONSE, 27, SEC_ERROR_OCSP_OLD_RESPONSE) \
MOZILLA_PKIX_MAP(ERROR_OCSP_REQUEST_NEEDS_SIG, 28, \
SEC_ERROR_OCSP_REQUEST_NEEDS_SIG) \
MOZILLA_PKIX_MAP(ERROR_OCSP_RESPONDER_CERT_INVALID, 29, \
SEC_ERROR_OCSP_RESPONDER_CERT_INVALID) \
MOZILLA_PKIX_MAP(ERROR_OCSP_SERVER_ERROR, 30, SEC_ERROR_OCSP_SERVER_ERROR) \
MOZILLA_PKIX_MAP(ERROR_OCSP_TRY_SERVER_LATER, 31, \
SEC_ERROR_OCSP_TRY_SERVER_LATER) \
MOZILLA_PKIX_MAP(ERROR_OCSP_UNAUTHORIZED_REQUEST, 32, \
SEC_ERROR_OCSP_UNAUTHORIZED_REQUEST) \
MOZILLA_PKIX_MAP(ERROR_OCSP_UNKNOWN_RESPONSE_STATUS, 33, \
SEC_ERROR_OCSP_UNKNOWN_RESPONSE_STATUS) \
MOZILLA_PKIX_MAP(ERROR_OCSP_UNKNOWN_CERT, 34, SEC_ERROR_OCSP_UNKNOWN_CERT) \
MOZILLA_PKIX_MAP(ERROR_OCSP_FUTURE_RESPONSE, 35, \
SEC_ERROR_OCSP_FUTURE_RESPONSE) \
MOZILLA_PKIX_MAP(ERROR_INVALID_KEY, 36, SEC_ERROR_INVALID_KEY) \
MOZILLA_PKIX_MAP(ERROR_UNSUPPORTED_KEYALG, 37, SEC_ERROR_UNSUPPORTED_KEYALG) \
MOZILLA_PKIX_MAP(ERROR_EXPIRED_ISSUER_CERTIFICATE, 38, \
SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE) \
MOZILLA_PKIX_MAP(ERROR_CA_CERT_USED_AS_END_ENTITY, 39, \
MOZILLA_PKIX_ERROR_CA_CERT_USED_AS_END_ENTITY) \
MOZILLA_PKIX_MAP(ERROR_INADEQUATE_KEY_SIZE, 40, \
MOZILLA_PKIX_ERROR_INADEQUATE_KEY_SIZE) \
MOZILLA_PKIX_MAP(ERROR_V1_CERT_USED_AS_CA, 41, \
MOZILLA_PKIX_ERROR_V1_CERT_USED_AS_CA) \
MOZILLA_PKIX_MAP(ERROR_BAD_CERT_DOMAIN, 42, SSL_ERROR_BAD_CERT_DOMAIN) \
MOZILLA_PKIX_MAP(ERROR_NO_RFC822NAME_MATCH, 43, \
MOZILLA_PKIX_ERROR_NO_RFC822NAME_MATCH) \
MOZILLA_PKIX_MAP(ERROR_UNSUPPORTED_ELLIPTIC_CURVE, 44, \
SEC_ERROR_UNSUPPORTED_ELLIPTIC_CURVE) \
MOZILLA_PKIX_MAP(ERROR_NOT_YET_VALID_CERTIFICATE, 45, \
MOZILLA_PKIX_ERROR_NOT_YET_VALID_CERTIFICATE) \
MOZILLA_PKIX_MAP(ERROR_NOT_YET_VALID_ISSUER_CERTIFICATE, 46, \
MOZILLA_PKIX_ERROR_NOT_YET_VALID_ISSUER_CERTIFICATE) \
MOZILLA_PKIX_MAP(ERROR_UNSUPPORTED_EC_POINT_FORM, 47, \
SEC_ERROR_UNSUPPORTED_EC_POINT_FORM) \
MOZILLA_PKIX_MAP(ERROR_SIGNATURE_ALGORITHM_MISMATCH, 48, \
MOZILLA_PKIX_ERROR_SIGNATURE_ALGORITHM_MISMATCH) \
MOZILLA_PKIX_MAP(ERROR_OCSP_RESPONSE_FOR_CERT_MISSING, 49, \
MOZILLA_PKIX_ERROR_OCSP_RESPONSE_FOR_CERT_MISSING) \
MOZILLA_PKIX_MAP(ERROR_VALIDITY_TOO_LONG, 50, \
MOZILLA_PKIX_ERROR_VALIDITY_TOO_LONG) \
MOZILLA_PKIX_MAP(ERROR_REQUIRED_TLS_FEATURE_MISSING, 51, \
MOZILLA_PKIX_ERROR_REQUIRED_TLS_FEATURE_MISSING) \
MOZILLA_PKIX_MAP(ERROR_INVALID_INTEGER_ENCODING, 52, \
MOZILLA_PKIX_ERROR_INVALID_INTEGER_ENCODING) \
MOZILLA_PKIX_MAP(ERROR_EMPTY_ISSUER_NAME, 53, \
MOZILLA_PKIX_ERROR_EMPTY_ISSUER_NAME) \
MOZILLA_PKIX_MAP(ERROR_ADDITIONAL_POLICY_CONSTRAINT_FAILED, 54, \
MOZILLA_PKIX_ERROR_ADDITIONAL_POLICY_CONSTRAINT_FAILED) \
MOZILLA_PKIX_MAP(ERROR_SELF_SIGNED_CERT, 55, \
MOZILLA_PKIX_ERROR_SELF_SIGNED_CERT) \
MOZILLA_PKIX_MAP(ERROR_MITM_DETECTED, 56, MOZILLA_PKIX_ERROR_MITM_DETECTED) \
MOZILLA_PKIX_MAP(FATAL_ERROR_INVALID_ARGS, FATAL_ERROR_FLAG | 1, \
SEC_ERROR_INVALID_ARGS) \
MOZILLA_PKIX_MAP(FATAL_ERROR_INVALID_STATE, FATAL_ERROR_FLAG | 2, \
PR_INVALID_STATE_ERROR) \
MOZILLA_PKIX_MAP(FATAL_ERROR_LIBRARY_FAILURE, FATAL_ERROR_FLAG | 3, \
SEC_ERROR_LIBRARY_FAILURE) \
MOZILLA_PKIX_MAP(FATAL_ERROR_NO_MEMORY, FATAL_ERROR_FLAG | 4, \
SEC_ERROR_NO_MEMORY) \
/* nothing here */
enum class Result {
#define MOZILLA_PKIX_MAP(name, value, nss_name) name = value,
MOZILLA_PKIX_MAP_LIST
#undef MOZILLA_PKIX_MAP
};
// Returns the stringified name of the given result, e.g. "Result::Success",
// or nullptr if result is unknown (invalid).
const char* MapResultToName(Result result);
// We write many comparisons as (x != Success), and this shortened name makes
// those comparisons clearer, especially because the shortened name often
// results in less line wrapping.
static const Result Success = Result::Success;
inline bool IsFatalError(Result rv) {
return (static_cast<unsigned int>(rv) & FATAL_ERROR_FLAG) != 0;
}
inline Result NotReached(const char* /*explanation*/, Result result) {
assert(false);
return result;
}
}
} // namespace mozilla::pkix
#endif // mozilla_pkix_Result_h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This code is made available to you under your choice of the following sets
* of licensing terms:
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
/* Copyright 2014 Mozilla Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef mozilla_pkix_Time_h
#define mozilla_pkix_Time_h
#include <stdint.h>
#include <ctime>
#include <limits>
#include "mozpkix/Result.h"
namespace mozilla {
namespace pkix {
// Time with a range from the first second of year 0 (AD) through at least the
// last second of year 9999, which is the range of legal times in X.509 and
// OCSP. This type has second-level precision. The time zone is always UTC.
//
// Pass by value, not by reference.
class Time final {
public:
// Construct an uninitialized instance.
//
// This will fail to compile because there is no default constructor:
// Time x;
//
// This will succeed, leaving the time uninitialized:
// Time x(Time::uninitialized);
enum Uninitialized { uninitialized };
explicit Time(Uninitialized) {}
bool operator==(const Time& other) const {
return elapsedSecondsAD == other.elapsedSecondsAD;
}
bool operator>(const Time& other) const {
return elapsedSecondsAD > other.elapsedSecondsAD;
}
bool operator>=(const Time& other) const {
return elapsedSecondsAD >= other.elapsedSecondsAD;
}
bool operator<(const Time& other) const {
return elapsedSecondsAD < other.elapsedSecondsAD;
}
bool operator<=(const Time& other) const {
return elapsedSecondsAD <= other.elapsedSecondsAD;
}
Result AddSeconds(uint64_t seconds) {
if (std::numeric_limits<uint64_t>::max() - elapsedSecondsAD < seconds) {
return Result::FATAL_ERROR_INVALID_ARGS; // integer overflow
}
elapsedSecondsAD += seconds;
return Success;
}
Result SubtractSeconds(uint64_t seconds) {
if (seconds > elapsedSecondsAD) {
return Result::FATAL_ERROR_INVALID_ARGS; // integer overflow
}
elapsedSecondsAD -= seconds;
return Success;
}
static const uint64_t ONE_DAY_IN_SECONDS =
UINT64_C(24) * UINT64_C(60) * UINT64_C(60);
private:
// This constructor is hidden to prevent accidents like this:
//
// Time foo(time_t t)
// {
// // WRONG! 1970-01-01-00:00:00 == time_t(0), but not Time(0)!
// return Time(t);
// }
explicit Time(uint64_t aElapsedSecondsAD)
: elapsedSecondsAD(aElapsedSecondsAD) {}
friend Time TimeFromElapsedSecondsAD(uint64_t);
friend class Duration;
uint64_t elapsedSecondsAD;
};
inline Time TimeFromElapsedSecondsAD(uint64_t aElapsedSecondsAD) {
return Time(aElapsedSecondsAD);
}
Time Now();
// Note the epoch is the unix epoch (ie 00:00:00 UTC, 1 January 1970)
Time TimeFromEpochInSeconds(uint64_t secondsSinceEpoch);
class Duration final {
public:
Duration(Time timeA, Time timeB)
: durationInSeconds(
timeA < timeB ? timeB.elapsedSecondsAD - timeA.elapsedSecondsAD
: timeA.elapsedSecondsAD - timeB.elapsedSecondsAD) {}
explicit Duration(uint64_t aDurationInSeconds)
: durationInSeconds(aDurationInSeconds) {}
bool operator>(const Duration& other) const {
return durationInSeconds > other.durationInSeconds;
}
bool operator<(const Duration& other) const {
return durationInSeconds < other.durationInSeconds;
}
private:
uint64_t durationInSeconds;
};
}
} // namespace mozilla::pkix
#endif // mozilla_pkix_Time_h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This code is made available to you under your choice of the following sets
* of licensing terms:
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
/* Copyright 2013 Mozilla Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef mozilla_pkix_pkix_h
#define mozilla_pkix_pkix_h
#include "mozpkix/pkixtypes.h"
namespace mozilla {
namespace pkix {
// ----------------------------------------------------------------------------
// LIMITED SUPPORT FOR CERTIFICATE POLICIES
//
// If SEC_OID_X509_ANY_POLICY is passed as the value of the requiredPolicy
// parameter then all policy validation will be skipped. Otherwise, path
// building and validation will be done for the given policy.
//
// In RFC 5280 terms:
//
// * user-initial-policy-set = { requiredPolicy }.
// * initial-explicit-policy = true
// * initial-any-policy-inhibit = false
//
// We allow intermediate cerificates to use this extension but since
// we do not process the inhibit anyPolicy extesion we will fail if this
// extension is present. TODO(bug 989051)
// Because we force explicit policy and because we prohibit policy mapping, we
// do not bother processing the policy mapping, or policy constraint.
//
// ----------------------------------------------------------------------------
// ERROR RANKING
//
// BuildCertChain prioritizes certain checks ahead of others so that when a
// certificate chain has multiple errors, the "most serious" error is
// returned. In practice, this ranking of seriousness is tied directly to how
// Firefox's certificate error override mechanism.
//
// The ranking is:
//
// 1. Active distrust (Result::ERROR_UNTRUSTED_CERT).
// 2. Problems with issuer-independent properties for CA certificates.
// 3. Unknown issuer (Result::ERROR_UNKNOWN_ISSUER).
// 4. Problems with issuer-independent properties for EE certificates.
// 5. Revocation.
//
// In particular, if BuildCertChain returns Result::ERROR_UNKNOWN_ISSUER then
// the caller can call CERT_CheckCertValidTimes to determine if the certificate
// is ALSO expired.
//
// It would be better if revocation were prioritized above expiration and
// unknown issuer. However, it is impossible to do revocation checking without
// knowing the issuer, since the issuer information is needed to validate the
// revocation information. Also, generally revocation checking only works
// during the validity period of the certificate.
//
// In general, when path building fails, BuildCertChain will return
// Result::ERROR_UNKNOWN_ISSUER. However, if all attempted paths resulted in
// the same error (which is trivially true when there is only one potential
// path), more specific errors will be returned.
//
// ----------------------------------------------------------------------------
// Meanings of specific error codes can be found in Result.h
// This function attempts to find a trustworthy path from the supplied
// certificate to a trust anchor. In the event that no trusted path is found,
// the method returns an error result; the error ranking is described above.
//
// Parameters:
// time:
// Timestamp for which the chain should be valid; this is useful to
// analyze whether a record was trustworthy when it was made.
// requiredKeyUsageIfPresent:
// What key usage bits must be set, if the extension is present at all,
// to be considered a valid chain. Multiple values should be OR'd
// together. If you don't want to specify anything, use
// KeyUsage::noParticularKeyUsageRequired.
// requiredEKUIfPresent:
// What extended key usage bits must be set, if the EKU extension
// exists, to be considered a valid chain. Multiple values should be
// OR'd together. If you don't want to specify anything, use
// KeyPurposeId::anyExtendedKeyUsage.
// requiredPolicy:
// This is the policy to apply; typically included in EV certificates.
// If there is no policy, pass in CertPolicyId::anyPolicy.
Result BuildCertChain(TrustDomain& trustDomain, Input cert, Time time,
EndEntityOrCA endEntityOrCA,
KeyUsage requiredKeyUsageIfPresent,
KeyPurposeId requiredEKUIfPresent,
const CertPolicyId& requiredPolicy,
/*optional*/ const Input* stapledOCSPResponse);
// Verify that the given end-entity cert, which is assumed to have been already
// validated with BuildCertChain, is valid for the given hostname. The matching
// function attempts to implement RFC 6125 with a couple of differences:
// - IP addresses are out of scope of RFC 6125, but this method accepts them for
// backward compatibility (see SearchNames in pkixnames.cpp)
// - A wildcard in a DNS-ID may only appear as the entirety of the first label.
Result CheckCertHostname(Input cert, Input hostname,
NameMatchingPolicy& nameMatchingPolicy);
// Construct an RFC-6960-encoded OCSP request, ready for submission to a
// responder, for the provided CertID. The request has no extensions.
static const size_t OCSP_REQUEST_MAX_LENGTH = 127;
Result CreateEncodedOCSPRequest(TrustDomain& trustDomain, const CertID& certID,
/*out*/ uint8_t (&out)[OCSP_REQUEST_MAX_LENGTH],
/*out*/ size_t& outLen);
// The out parameter expired will be true if the response has expired. If the
// response also indicates a revoked or unknown certificate, that error
// will be returned. Otherwise, Result::ERROR_OCSP_OLD_RESPONSE will be
// returned for an expired response.
//
// The optional parameter thisUpdate will be the thisUpdate value of
// the encoded response if it is considered trustworthy. Only
// good, unknown, or revoked responses that verify correctly are considered
// trustworthy. If the response is not trustworthy, thisUpdate will be 0.
// Similarly, the optional parameter validThrough will be the time through
// which the encoded response is considered trustworthy (that is, as long as
// the given time at which to validate is less than or equal to validThrough,
// the response will be considered trustworthy).
Result VerifyEncodedOCSPResponse(
TrustDomain& trustDomain, const CertID& certID, Time time,
uint16_t maxLifetimeInDays, Input encodedResponse,
/* out */ bool& expired,
/* optional out */ Time* thisUpdate = nullptr,
/* optional out */ Time* validThrough = nullptr);
// Check that the TLSFeature extensions in a given end-entity cert (which is
// assumed to have been already validated with BuildCertChain) are satisfied.
// The only feature which we cancurrently process a requirement for is
// status_request (OCSP stapling) so we reject any extension that specifies a
// requirement for another value. Empty extensions are also rejected.
Result CheckTLSFeaturesAreSatisfied(Input& cert,
const Input* stapledOCSPResponse);
}
} // namespace mozilla::pkix
#endif // mozilla_pkix_pkix_h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This code is made available to you under your choice of the following sets
* of licensing terms:
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
/* Copyright 2013 Mozilla Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef mozilla_pkix_pkixcheck_h
#define mozilla_pkix_pkixcheck_h
#include "mozpkix/pkixtypes.h"
namespace mozilla {
namespace pkix {
class BackCert;
Result CheckIssuerIndependentProperties(TrustDomain& trustDomain,
const BackCert& cert, Time time,
KeyUsage requiredKeyUsageIfPresent,
KeyPurposeId requiredEKUIfPresent,
const CertPolicyId& requiredPolicy,
unsigned int subCACount,
/*out*/ TrustLevel& trustLevel);
Result CheckNameConstraints(Input encodedNameConstraints,
const BackCert& firstChild,
KeyPurposeId requiredEKUIfPresent);
Result CheckIssuer(Input encodedIssuer);
// ParseValidity and CheckValidity are usually used together. First you parse
// the dates from the DER Validity sequence, then you compare them to the time
// at which you are validating. They are separate so that the notBefore and
// notAfter times can be used for other things before they are checked against
// the time of validation.
Result ParseValidity(Input encodedValidity,
/*optional out*/ Time* notBeforeOut = nullptr,
/*optional out*/ Time* notAfterOut = nullptr);
Result CheckValidity(Time time, Time notBefore, Time notAfter);
// Check that a subject has TLS Feature (rfc7633) requirements that match its
// potential issuer
Result CheckTLSFeatures(const BackCert& subject, BackCert& potentialIssuer);
}
} // namespace mozilla::pkix
#endif // mozilla_pkix_pkixcheck_h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This code is made available to you under your choice of the following sets
* of licensing terms:
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
/* Copyright 2013 Mozilla Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef mozilla_pkix_pkixder_h
#define mozilla_pkix_pkixder_h
// Expect* functions advance the input mark and return Success if the input
// matches the given criteria; they fail with the input mark in an undefined
// state if the input does not match the criteria.
//
// Match* functions advance the input mark and return true if the input matches
// the given criteria; they return false without changing the input mark if the
// input does not match the criteria.
//
// Skip* functions unconditionally advance the input mark and return Success if
// they are able to do so; otherwise they fail with the input mark in an
// undefined state.
#include "mozpkix/Input.h"
#include "mozpkix/pkixtypes.h"
namespace mozilla {
namespace pkix {
namespace der {
enum Class : uint8_t {
UNIVERSAL = 0 << 6,
// APPLICATION = 1 << 6, // unused
CONTEXT_SPECIFIC = 2 << 6,
// PRIVATE = 3 << 6 // unused
};
enum Constructed { CONSTRUCTED = 1 << 5 };
enum Tag : uint8_t {
BOOLEAN = UNIVERSAL | 0x01,
INTEGER = UNIVERSAL | 0x02,
BIT_STRING = UNIVERSAL | 0x03,
OCTET_STRING = UNIVERSAL | 0x04,
NULLTag = UNIVERSAL | 0x05,
OIDTag = UNIVERSAL | 0x06,
ENUMERATED = UNIVERSAL | 0x0a,
UTF8String = UNIVERSAL | 0x0c,
SEQUENCE = UNIVERSAL | CONSTRUCTED | 0x10, // 0x30
SET = UNIVERSAL | CONSTRUCTED | 0x11, // 0x31
PrintableString = UNIVERSAL | 0x13,
TeletexString = UNIVERSAL | 0x14,
IA5String = UNIVERSAL | 0x16,
UTCTime = UNIVERSAL | 0x17,
GENERALIZED_TIME = UNIVERSAL | 0x18,
};
enum class EmptyAllowed { No = 0, Yes = 1 };
Result ReadTagAndGetValue(Reader& input, /*out*/ uint8_t& tag,
/*out*/ Input& value);
Result End(Reader& input);
inline Result ExpectTagAndGetValue(Reader& input, uint8_t tag,
/*out*/ Input& value) {
uint8_t actualTag;
Result rv = ReadTagAndGetValue(input, actualTag, value);
if (rv != Success) {
return rv;
}
if (tag != actualTag) {
return Result::ERROR_BAD_DER;
}
return Success;
}
inline Result ExpectTagAndGetValue(Reader& input, uint8_t tag,
/*out*/ Reader& value) {
Input valueInput;
Result rv = ExpectTagAndGetValue(input, tag, valueInput);
if (rv != Success) {
return rv;
}
return value.Init(valueInput);
}
inline Result ExpectTagAndEmptyValue(Reader& input, uint8_t tag) {
Reader value;
Result rv = ExpectTagAndGetValue(input, tag, value);
if (rv != Success) {
return rv;
}
return End(value);
}
inline Result ExpectTagAndSkipValue(Reader& input, uint8_t tag) {
Input ignoredValue;
return ExpectTagAndGetValue(input, tag, ignoredValue);
}
// Like ExpectTagAndGetValue, except the output Input will contain the
// encoded tag and length along with the value.
inline Result ExpectTagAndGetTLV(Reader& input, uint8_t tag,
/*out*/ Input& tlv) {
Reader::Mark mark(input.GetMark());
Result rv = ExpectTagAndSkipValue(input, tag);
if (rv != Success) {
return rv;
}
return input.GetInput(mark, tlv);
}
inline Result End(Reader& input) {
if (!input.AtEnd()) {
return Result::ERROR_BAD_DER;
}
return Success;
}
template <typename Decoder>
inline Result Nested(Reader& input, uint8_t tag, Decoder decoder) {
Reader nested;
Result rv = ExpectTagAndGetValue(input, tag, nested);
if (rv != Success) {
return rv;
}
rv = decoder(nested);
if (rv != Success) {
return rv;
}
return End(nested);
}
template <typename Decoder>
inline Result Nested(Reader& input, uint8_t outerTag, uint8_t innerTag,
Decoder decoder) {
Reader nestedInput;
Result rv = ExpectTagAndGetValue(input, outerTag, nestedInput);
if (rv != Success) {
return rv;
}
rv = Nested(nestedInput, innerTag, decoder);
if (rv != Success) {
return rv;
}
return End(nestedInput);
}
// This can be used to decode constructs like this:
//
// ...
// foos SEQUENCE OF Foo,
// ...
// Foo ::= SEQUENCE {
// }
//
// using code like this:
//
// Result Foo(Reader& r) { /*...*/ }
//
// rv = der::NestedOf(input, der::SEQEUENCE, der::SEQUENCE, Foo);
//
// or:
//
// Result Bar(Reader& r, int value) { /*...*/ }
//
// int value = /*...*/;
//
// rv = der::NestedOf(input, der::SEQUENCE, [value](Reader& r) {
// return Bar(r, value);
// });
//
// In these examples the function will get called once for each element of
// foos.
//
template <typename Decoder>
inline Result NestedOf(Reader& input, uint8_t outerTag, uint8_t innerTag,
EmptyAllowed mayBeEmpty, Decoder decoder) {
Reader inner;
Result rv = ExpectTagAndGetValue(input, outerTag, inner);
if (rv != Success) {
return rv;
}
if (inner.AtEnd()) {
if (mayBeEmpty != EmptyAllowed::Yes) {
return Result::ERROR_BAD_DER;
}
return Success;
}
do {
rv = Nested(inner, innerTag, decoder);
if (rv != Success) {
return rv;
}
} while (!inner.AtEnd());
return Success;
}
// Often, a function will need to decode an Input or Reader that contains
// DER-encoded data wrapped in a SEQUENCE (or similar) with nothing after it.
// This function reduces the boilerplate necessary for stripping the outermost
// SEQUENCE (or similar) and ensuring that nothing follows it.
inline Result ExpectTagAndGetValueAtEnd(Reader& outer, uint8_t expectedTag,
/*out*/ Reader& inner) {
Result rv = der::ExpectTagAndGetValue(outer, expectedTag, inner);
if (rv != Success) {
return rv;
}
return der::End(outer);
}
// Similar to the above, but takes an Input instead of a Reader&.
inline Result ExpectTagAndGetValueAtEnd(Input outer, uint8_t expectedTag,
/*out*/ Reader& inner) {
Reader outerReader(outer);
return ExpectTagAndGetValueAtEnd(outerReader, expectedTag, inner);
}
// Universal types
namespace internal {
enum class IntegralValueRestriction {
NoRestriction,
MustBePositive,
MustBe0To127,
};
Result IntegralBytes(
Reader& input, uint8_t tag, IntegralValueRestriction valueRestriction,
/*out*/ Input& value,
/*optional out*/ Input::size_type* significantBytes = nullptr);
// This parser will only parse values between 0..127. If this range is
// increased then callers will need to be changed.
Result IntegralValue(Reader& input, uint8_t tag, /*out*/ uint8_t& value);
} // namespace internal
Result BitStringWithNoUnusedBits(Reader& input, /*out*/ Input& value);
inline Result Boolean(Reader& input, /*out*/ bool& value) {
Reader valueReader;
Result rv = ExpectTagAndGetValue(input, BOOLEAN, valueReader);
if (rv != Success) {
return rv;
}
uint8_t intValue;
rv = valueReader.Read(intValue);
if (rv != Success) {
return rv;
}
rv = End(valueReader);
if (rv != Success) {
return rv;
}
switch (intValue) {
case 0:
value = false;
return Success;
case 0xFF:
value = true;
return Success;
default:
return Result::ERROR_BAD_DER;
}
}
// This is for BOOLEAN DEFAULT FALSE.
// The standard stipulates that "The encoding of a set value or sequence value
// shall not include an encoding for any component value which is equal to its
// default value." However, it appears to be common that other libraries
// incorrectly include the value of a BOOLEAN even when it's equal to the
// default value, so we allow invalid explicit encodings here.
inline Result OptionalBoolean(Reader& input, /*out*/ bool& value) {
value = false;
if (input.Peek(BOOLEAN)) {
Result rv = Boolean(input, value);
if (rv != Success) {
return rv;
}
}
return Success;
}
// This parser will only parse values between 0..127. If this range is
// increased then callers will need to be changed.
inline Result Enumerated(Reader& input, uint8_t& value) {
return internal::IntegralValue(input, ENUMERATED | 0, value);
}
namespace internal {
// internal::TimeChoice implements the shared functionality of GeneralizedTime
// and TimeChoice. tag must be either UTCTime or GENERALIZED_TIME.
//
// Only times from 1970-01-01-00:00:00 onward are accepted, in order to
// eliminate the chance for complications in converting times to traditional
// time formats that start at 1970.
Result TimeChoice(Reader& input, uint8_t tag, /*out*/ Time& time);
} // namespace internal
// Only times from 1970-01-01-00:00:00 onward are accepted, in order to
// eliminate the chance for complications in converting times to traditional
// time formats that start at 1970.
inline Result GeneralizedTime(Reader& input, /*out*/ Time& time) {
return internal::TimeChoice(input, GENERALIZED_TIME, time);
}
// Only times from 1970-01-01-00:00:00 onward are accepted, in order to
// eliminate the chance for complications in converting times to traditional
// time formats that start at 1970.
inline Result TimeChoice(Reader& input, /*out*/ Time& time) {
uint8_t expectedTag = input.Peek(UTCTime) ? UTCTime : GENERALIZED_TIME;
return internal::TimeChoice(input, expectedTag, time);
}
// Parse a DER integer value into value. Empty values, negative values, and
// zero are rejected. If significantBytes is not null, then it will be set to
// the number of significant bytes in the value (the length of the value, less
// the length of any leading padding), which is useful for key size checks.
inline Result PositiveInteger(
Reader& input, /*out*/ Input& value,
/*optional out*/ Input::size_type* significantBytes = nullptr) {
return internal::IntegralBytes(
input, INTEGER, internal::IntegralValueRestriction::MustBePositive, value,
significantBytes);
}
// This parser will only parse values between 0..127. If this range is
// increased then callers will need to be changed.
inline Result Integer(Reader& input, /*out*/ uint8_t& value) {
return internal::IntegralValue(input, INTEGER, value);
}
// This parser will only parse values between 0..127. If this range is
// increased then callers will need to be changed. The default value must be
// -1; defaultValue is only a parameter to make it clear in the calling code
// what the default value is.
inline Result OptionalInteger(Reader& input, long defaultValue,
/*out*/ long& value) {
// If we need to support a different default value in the future, we need to
// test that parsedValue != defaultValue.
if (defaultValue != -1) {
return Result::FATAL_ERROR_INVALID_ARGS;
}
if (!input.Peek(INTEGER)) {
value = defaultValue;
return Success;
}
uint8_t parsedValue;
Result rv = Integer(input, parsedValue);
if (rv != Success) {
return rv;
}
value = parsedValue;
return Success;
}
inline Result Null(Reader& input) {
return ExpectTagAndEmptyValue(input, NULLTag);
}
template <uint8_t Len>
Result OID(Reader& input, const uint8_t (&expectedOid)[Len]) {
Reader value;
Result rv = ExpectTagAndGetValue(input, OIDTag, value);
if (rv != Success) {
return rv;
}
if (!value.MatchRest(expectedOid)) {
return Result::ERROR_BAD_DER;
}
return Success;
}
// PKI-specific types
inline Result CertificateSerialNumber(Reader& input, /*out*/ Input& value) {
// http://tools.ietf.org/html/rfc5280#section-4.1.2.2:
//
// * "The serial number MUST be a positive integer assigned by the CA to
// each certificate."
// * "Certificate users MUST be able to handle serialNumber values up to 20
// octets. Conforming CAs MUST NOT use serialNumber values longer than 20
// octets."
// * "Note: Non-conforming CAs may issue certificates with serial numbers
// that are negative or zero. Certificate users SHOULD be prepared to
// gracefully handle such certificates."
return internal::IntegralBytes(
input, INTEGER, internal::IntegralValueRestriction::NoRestriction, value);
}
// x.509 and OCSP both use this same version numbering scheme, though OCSP
// only supports v1.
enum class Version { v1 = 0, v2 = 1, v3 = 2, v4 = 3, Uninitialized = 255 };
// X.509 Certificate and OCSP ResponseData both use
// "[0] EXPLICIT Version DEFAULT v1". Although an explicit encoding of v1 is
// illegal, we support it because some real-world OCSP responses explicitly
// encode it.
Result OptionalVersion(Reader& input, /*out*/ Version& version);
template <typename ExtensionHandler>
inline Result OptionalExtensions(Reader& input, uint8_t tag,
ExtensionHandler extensionHandler) {
if (!input.Peek(tag)) {
return Success;
}
return Nested(input, tag, [extensionHandler](Reader& tagged) {
// Extensions ::= SEQUENCE SIZE (1..MAX) OF Extension
//
// TODO(bug 997994): According to the specification, there should never be
// an empty sequence of extensions but we've found OCSP responses that have
// that (see bug 991898).
return NestedOf(
tagged, SEQUENCE, SEQUENCE, EmptyAllowed::Yes,
[extensionHandler](Reader& extension) -> Result {
// Extension ::= SEQUENCE {
// extnID OBJECT IDENTIFIER,
// critical BOOLEAN DEFAULT FALSE,
// extnValue OCTET STRING
// }
Reader extnID;
Result rv = ExpectTagAndGetValue(extension, OIDTag, extnID);
if (rv != Success) {
return rv;
}
bool critical;
rv = OptionalBoolean(extension, critical);
if (rv != Success) {
return rv;
}
Input extnValue;
rv = ExpectTagAndGetValue(extension, OCTET_STRING, extnValue);
if (rv != Success) {
return rv;
}
bool understood = false;
rv = extensionHandler(extnID, extnValue, critical, understood);
if (rv != Success) {
return rv;
}
if (critical && !understood) {
return Result::ERROR_UNKNOWN_CRITICAL_EXTENSION;
}
return Success;
});
});
}
Result DigestAlgorithmIdentifier(Reader& input,
/*out*/ DigestAlgorithm& algorithm);
enum class PublicKeyAlgorithm { RSA_PKCS1, ECDSA, Uninitialized };
Result SignatureAlgorithmIdentifierValue(
Reader& input,
/*out*/ PublicKeyAlgorithm& publicKeyAlgorithm,
/*out*/ DigestAlgorithm& digestAlgorithm);
struct SignedDataWithSignature final {
public:
Input data;
Input algorithm;
Input signature;
void operator=(const SignedDataWithSignature&) = delete;
};
// Parses a SEQUENCE into tbs and then parses an AlgorithmIdentifier followed
// by a BIT STRING into signedData. This handles the commonality between
// parsing the signed/signature fields of certificates and OCSP responses. In
// the case of an OCSP response, the caller needs to parse the certs
// separately.
//
// Note that signatureAlgorithm is NOT parsed or validated.
//
// Certificate ::= SEQUENCE {
// tbsCertificate TBSCertificate,
// signatureAlgorithm AlgorithmIdentifier,
// signatureValue BIT STRING }
//
// BasicOCSPResponse ::= SEQUENCE {
// tbsResponseData ResponseData,
// signatureAlgorithm AlgorithmIdentifier,
// signature BIT STRING,
// certs [0] EXPLICIT SEQUENCE OF Certificate OPTIONAL }
Result SignedData(Reader& input, /*out*/ Reader& tbs,
/*out*/ SignedDataWithSignature& signedDataWithSignature);
}
}
} // namespace mozilla::pkix::der
#endif // mozilla_pkix_pkixder_h

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@ -0,0 +1,106 @@
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This code is made available to you under your choice of the following sets
* of licensing terms:
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
/* Copyright 2013 Mozilla Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef mozilla_pkix_pkixnss_h
#define mozilla_pkix_pkixnss_h
#include <seccomon.h>
#include "mozpkix/pkixtypes.h"
#include "prerror.h"
namespace mozilla {
namespace pkix {
// Verifies the PKCS#1.5 signature on the given data using the given RSA public
// key.
Result VerifyRSAPKCS1SignedDigestNSS(const SignedDigest& sd,
Input subjectPublicKeyInfo,
void* pkcs11PinArg);
// Verifies the ECDSA signature on the given data using the given ECC public
// key.
Result VerifyECDSASignedDigestNSS(const SignedDigest& sd,
Input subjectPublicKeyInfo,
void* pkcs11PinArg);
// Computes the digest of the given data using the given digest algorithm.
//
// item contains the data to hash.
// digestBuf must point to a buffer to where the digest will be written.
// digestBufLen must be the size of the buffer, which must be exactly equal
// to the size of the digest output (20 for SHA-1, 32 for SHA-256,
// etc.)
//
// TODO: Taking the output buffer as (uint8_t*, size_t) is counter to our
// other, extensive, memory safety efforts in mozilla::pkix, and we should find
// a way to provide a more-obviously-safe interface.
Result DigestBufNSS(Input item, DigestAlgorithm digestAlg,
/*out*/ uint8_t* digestBuf, size_t digestBufLen);
Result MapPRErrorCodeToResult(PRErrorCode errorCode);
PRErrorCode MapResultToPRErrorCode(Result result);
// The error codes within each module must fit in 16 bits. We want these
// errors to fit in the same module as the NSS errors but not overlap with
// any of them. Converting an NSS SEC, NSS SSL, or PSM error to an NS error
// involves negating the value of the error and then synthesizing an error
// in the NS_ERROR_MODULE_SECURITY module. Hence, PSM errors will start at
// a negative value that both doesn't overlap with the current value
// ranges for NSS errors and that will fit in 16 bits when negated.
static const PRErrorCode ERROR_BASE = -0x4000;
static const PRErrorCode ERROR_LIMIT = ERROR_BASE + 1000;
enum ErrorCode {
MOZILLA_PKIX_ERROR_KEY_PINNING_FAILURE = ERROR_BASE + 0,
MOZILLA_PKIX_ERROR_CA_CERT_USED_AS_END_ENTITY = ERROR_BASE + 1,
MOZILLA_PKIX_ERROR_INADEQUATE_KEY_SIZE = ERROR_BASE + 2,
MOZILLA_PKIX_ERROR_V1_CERT_USED_AS_CA = ERROR_BASE + 3,
MOZILLA_PKIX_ERROR_NO_RFC822NAME_MATCH = ERROR_BASE + 4,
MOZILLA_PKIX_ERROR_NOT_YET_VALID_CERTIFICATE = ERROR_BASE + 5,
MOZILLA_PKIX_ERROR_NOT_YET_VALID_ISSUER_CERTIFICATE = ERROR_BASE + 6,
MOZILLA_PKIX_ERROR_SIGNATURE_ALGORITHM_MISMATCH = ERROR_BASE + 7,
MOZILLA_PKIX_ERROR_OCSP_RESPONSE_FOR_CERT_MISSING = ERROR_BASE + 8,
MOZILLA_PKIX_ERROR_VALIDITY_TOO_LONG = ERROR_BASE + 9,
MOZILLA_PKIX_ERROR_REQUIRED_TLS_FEATURE_MISSING = ERROR_BASE + 10,
MOZILLA_PKIX_ERROR_INVALID_INTEGER_ENCODING = ERROR_BASE + 11,
MOZILLA_PKIX_ERROR_EMPTY_ISSUER_NAME = ERROR_BASE + 12,
MOZILLA_PKIX_ERROR_ADDITIONAL_POLICY_CONSTRAINT_FAILED = ERROR_BASE + 13,
MOZILLA_PKIX_ERROR_SELF_SIGNED_CERT = ERROR_BASE + 14,
MOZILLA_PKIX_ERROR_MITM_DETECTED = ERROR_BASE + 15,
END_OF_LIST
};
void RegisterErrorTable();
inline SECItem UnsafeMapInputToSECItem(Input input) {
SECItem result = {siBuffer, const_cast<uint8_t*>(input.UnsafeGetData()),
input.GetLength()};
static_assert(sizeof(decltype(input.GetLength())) <= sizeof(result.len),
"input.GetLength() must fit in a SECItem");
return result;
}
}
} // namespace mozilla::pkix
#endif // mozilla_pkix_pkixnss_h

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@ -0,0 +1,400 @@
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This code is made available to you under your choice of the following sets
* of licensing terms:
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
/* Copyright 2013 Mozilla Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef mozilla_pkix_pkixtypes_h
#define mozilla_pkix_pkixtypes_h
#include <memory>
#include "mozpkix/Input.h"
#include "mozpkix/Time.h"
#include "stdint.h"
namespace mozilla {
namespace pkix {
enum class DigestAlgorithm {
sha512 = 1,
sha384 = 2,
sha256 = 3,
sha1 = 4,
};
enum class NamedCurve {
// secp521r1 (OID 1.3.132.0.35, RFC 5480)
secp521r1 = 1,
// secp384r1 (OID 1.3.132.0.34, RFC 5480)
secp384r1 = 2,
// secp256r1 (OID 1.2.840.10045.3.1.7, RFC 5480)
secp256r1 = 3,
};
struct SignedDigest final {
Input digest;
DigestAlgorithm digestAlgorithm;
Input signature;
void operator=(const SignedDigest&) = delete;
};
enum class EndEntityOrCA { MustBeEndEntity = 0, MustBeCA = 1 };
enum class KeyUsage : uint8_t {
digitalSignature = 0,
nonRepudiation = 1,
keyEncipherment = 2,
dataEncipherment = 3,
keyAgreement = 4,
keyCertSign = 5,
// cRLSign = 6,
// encipherOnly = 7,
// decipherOnly = 8,
noParticularKeyUsageRequired = 0xff,
};
enum class KeyPurposeId {
anyExtendedKeyUsage = 0,
id_kp_serverAuth = 1, // id-kp-serverAuth
id_kp_clientAuth = 2, // id-kp-clientAuth
id_kp_codeSigning = 3, // id-kp-codeSigning
id_kp_emailProtection = 4, // id-kp-emailProtection
id_kp_OCSPSigning = 9, // id-kp-OCSPSigning
};
struct CertPolicyId final {
uint16_t numBytes;
static const uint16_t MAX_BYTES = 24;
uint8_t bytes[MAX_BYTES];
bool IsAnyPolicy() const;
bool operator==(const CertPolicyId& other) const;
static const CertPolicyId anyPolicy;
};
enum class TrustLevel {
TrustAnchor = 1, // certificate is a trusted root CA certificate or
// equivalent *for the given policy*.
ActivelyDistrusted = 2, // certificate is known to be bad
InheritsTrust = 3 // certificate must chain to a trust anchor
};
// Extensions extracted during the verification flow.
// See TrustDomain::NoteAuxiliaryExtension.
enum class AuxiliaryExtension {
// Certificate Transparency data, specifically Signed Certificate
// Timestamps (SCTs). See RFC 6962.
// SCT list embedded in the end entity certificate. Called by BuildCertChain
// after the certificate containing the SCTs has passed the revocation checks.
EmbeddedSCTList = 1,
// SCT list from OCSP response. Called by VerifyEncodedOCSPResponse
// when its result is a success and the SCT list is present.
SCTListFromOCSPResponse = 2
};
// CertID references the information needed to do revocation checking for the
// certificate issued by the given issuer with the given serial number.
//
// issuer must be the DER-encoded issuer field from the certificate for which
// revocation checking is being done, **NOT** the subject field of the issuer
// certificate. (Those two fields must be equal to each other, but they may not
// be encoded exactly the same, and the encoding matters for OCSP.)
// issuerSubjectPublicKeyInfo is the entire DER-encoded subjectPublicKeyInfo
// field from the issuer's certificate. serialNumber is the entire DER-encoded
// serial number from the subject certificate (the certificate for which we are
// checking the revocation status).
struct CertID final {
public:
CertID(Input aIssuer, Input aIssuerSubjectPublicKeyInfo, Input aSerialNumber)
: issuer(aIssuer),
issuerSubjectPublicKeyInfo(aIssuerSubjectPublicKeyInfo),
serialNumber(aSerialNumber) {}
const Input issuer;
const Input issuerSubjectPublicKeyInfo;
const Input serialNumber;
void operator=(const CertID&) = delete;
};
typedef std::unique_ptr<CertID> ScopedCertID;
class DERArray {
public:
// Returns the number of DER-encoded items in the array.
virtual size_t GetLength() const = 0;
// Returns a weak (non-owning) pointer the ith DER-encoded item in the array
// (0-indexed). The result is guaranteed to be non-null if i < GetLength(),
// and the result is guaranteed to be nullptr if i >= GetLength().
virtual const Input* GetDER(size_t i) const = 0;
protected:
DERArray() {}
virtual ~DERArray() {}
};
// Applications control the behavior of path building and verification by
// implementing the TrustDomain interface. The TrustDomain is used for all
// cryptography and for determining which certificates are trusted or
// distrusted.
class TrustDomain {
public:
virtual ~TrustDomain() {}
// Determine the level of trust in the given certificate for the given role.
// This will be called for every certificate encountered during path
// building.
//
// When policy.IsAnyPolicy(), then no policy-related checking should be done.
// When !policy.IsAnyPolicy(), then GetCertTrust MUST NOT return with
// trustLevel == TrustAnchor unless the given cert is considered a trust
// anchor *for that policy*. In particular, if the user has marked an
// intermediate certificate as trusted, but that intermediate isn't in the
// list of EV roots, then GetCertTrust must result in
// trustLevel == InheritsTrust instead of trustLevel == TrustAnchor
// (assuming the candidate cert is not actively distrusted).
virtual Result GetCertTrust(EndEntityOrCA endEntityOrCA,
const CertPolicyId& policy,
Input candidateCertDER,
/*out*/ TrustLevel& trustLevel) = 0;
class IssuerChecker {
public:
// potentialIssuerDER is the complete DER encoding of the certificate to
// be checked as a potential issuer.
//
// If additionalNameConstraints is not nullptr then it must point to an
// encoded NameConstraints extension value; in that case, those name
// constraints will be checked in addition to any any name constraints
// contained in potentialIssuerDER.
virtual Result Check(Input potentialIssuerDER,
/*optional*/ const Input* additionalNameConstraints,
/*out*/ bool& keepGoing) = 0;
protected:
IssuerChecker();
virtual ~IssuerChecker();
IssuerChecker(const IssuerChecker&) = delete;
void operator=(const IssuerChecker&) = delete;
};
// Search for a CA certificate with the given name. The implementation must
// call checker.Check with the DER encoding of the potential issuer
// certificate. The implementation must follow these rules:
//
// * The implementation must be reentrant and must limit the amount of stack
// space it uses; see the note on reentrancy and stack usage below.
// * When checker.Check does not return Success then immediately return its
// return value.
// * When checker.Check returns Success and sets keepGoing = false, then
// immediately return Success.
// * When checker.Check returns Success and sets keepGoing = true, then
// call checker.Check again with a different potential issuer certificate,
// if any more are available.
// * When no more potential issuer certificates are available, return
// Success.
// * Don't call checker.Check with the same potential issuer certificate more
// than once in a given call of FindIssuer.
// * The given time parameter may be used to filter out certificates that are
// not valid at the given time, or it may be ignored.
//
// Note on reentrancy and stack usage: checker.Check will attempt to
// recursively build a certificate path from the potential issuer it is given
// to a trusted root, as determined by this TrustDomain. That means that
// checker.Check may call any/all of the methods on this TrustDomain. In
// particular, there will be call stacks that look like this:
//
// BuildCertChain
// [...]
// TrustDomain::FindIssuer
// [...]
// IssuerChecker::Check
// [...]
// TrustDomain::FindIssuer
// [...]
// IssuerChecker::Check
// [...]
//
// checker.Check is responsible for limiting the recursion to a reasonable
// limit.
//
// checker.Check will verify that the subject's issuer field matches the
// potential issuer's subject field. It will also check that the potential
// issuer is valid at the given time. However, if the FindIssuer
// implementation has an efficient way of filtering potential issuers by name
// and/or validity period itself, then it is probably better for performance
// for it to do so.
virtual Result FindIssuer(Input encodedIssuerName, IssuerChecker& checker,
Time time) = 0;
// Called as soon as we think we have a valid chain but before revocation
// checks are done. This function can be used to compute additional checks,
// especially checks that require the entire certificate chain. This callback
// can also be used to save a copy of the built certificate chain for later
// use.
//
// This function may be called multiple times, regardless of whether it
// returns success or failure. It is guaranteed that BuildCertChain will not
// return Success unless the last call to IsChainValid returns Success.
// Further,
// it is guaranteed that when BuildCertChain returns Success the last chain
// passed to IsChainValid is the valid chain that should be used for further
// operations that require the whole chain.
//
// Keep in mind, in particular, that if the application saves a copy of the
// certificate chain the last invocation of IsChainValid during a validation,
// it is still possible for BuildCertChain to fail, in which case the
// application must not assume anything about the validity of the last
// certificate chain passed to IsChainValid; especially, it would be very
// wrong to assume that the certificate chain is valid.
//
// certChain.GetDER(0) is the trust anchor.
virtual Result IsChainValid(const DERArray& certChain, Time time,
const CertPolicyId& requiredPolicy) = 0;
virtual Result CheckRevocation(EndEntityOrCA endEntityOrCA,
const CertID& certID, Time time,
Duration validityDuration,
/*optional*/ const Input* stapledOCSPresponse,
/*optional*/ const Input* aiaExtension) = 0;
// Check that the given digest algorithm is acceptable for use in signatures.
//
// Return Success if the algorithm is acceptable,
// Result::ERROR_CERT_SIGNATURE_ALGORITHM_DISABLED if the algorithm is not
// acceptable, or another error code if another error occurred.
virtual Result CheckSignatureDigestAlgorithm(DigestAlgorithm digestAlg,
EndEntityOrCA endEntityOrCA,
Time notBefore) = 0;
// Check that the RSA public key size is acceptable.
//
// Return Success if the key size is acceptable,
// Result::ERROR_INADEQUATE_KEY_SIZE if the key size is not acceptable,
// or another error code if another error occurred.
virtual Result CheckRSAPublicKeyModulusSizeInBits(
EndEntityOrCA endEntityOrCA, unsigned int modulusSizeInBits) = 0;
// Verify the given RSA PKCS#1.5 signature on the given digest using the
// given RSA public key.
//
// CheckRSAPublicKeyModulusSizeInBits will be called before calling this
// function, so it is not necessary to repeat those checks here. However,
// VerifyRSAPKCS1SignedDigest *is* responsible for doing the mathematical
// verification of the public key validity as specified in NIST SP 800-56A.
virtual Result VerifyRSAPKCS1SignedDigest(const SignedDigest& signedDigest,
Input subjectPublicKeyInfo) = 0;
// Check that the given named ECC curve is acceptable for ECDSA signatures.
//
// Return Success if the curve is acceptable,
// Result::ERROR_UNSUPPORTED_ELLIPTIC_CURVE if the curve is not acceptable,
// or another error code if another error occurred.
virtual Result CheckECDSACurveIsAcceptable(EndEntityOrCA endEntityOrCA,
NamedCurve curve) = 0;
// Verify the given ECDSA signature on the given digest using the given ECC
// public key.
//
// CheckECDSACurveIsAcceptable will be called before calling this function,
// so it is not necessary to repeat that check here. However,
// VerifyECDSASignedDigest *is* responsible for doing the mathematical
// verification of the public key validity as specified in NIST SP 800-56A.
virtual Result VerifyECDSASignedDigest(const SignedDigest& signedDigest,
Input subjectPublicKeyInfo) = 0;
// Check that the validity duration is acceptable.
//
// Return Success if the validity duration is acceptable,
// Result::ERROR_VALIDITY_TOO_LONG if the validity duration is not acceptable,
// or another error code if another error occurred.
virtual Result CheckValidityIsAcceptable(Time notBefore, Time notAfter,
EndEntityOrCA endEntityOrCA,
KeyPurposeId keyPurpose) = 0;
// For compatibility, a CA certificate with an extended key usage that
// contains the id-Netscape-stepUp OID but does not contain the
// id-kp-serverAuth OID may be considered valid for issuing server auth
// certificates. This function allows TrustDomain implementations to control
// this setting based on the start of the validity period of the certificate
// in question.
virtual Result NetscapeStepUpMatchesServerAuth(Time notBefore,
/*out*/ bool& matches) = 0;
// Some certificate or OCSP response extensions do not directly participate
// in the verification flow, but might still be of interest to the clients
// (notably Certificate Transparency data, RFC 6962). Such extensions are
// extracted and passed to this function for further processing.
virtual void NoteAuxiliaryExtension(AuxiliaryExtension extension,
Input extensionData) = 0;
// Compute a digest of the data in item using the given digest algorithm.
//
// item contains the data to hash.
// digestBuf points to a buffer to where the digest will be written.
// digestBufLen will be the size of the digest output (20 for SHA-1,
// 32 for SHA-256, etc.).
//
// TODO: Taking the output buffer as (uint8_t*, size_t) is counter to our
// other, extensive, memory safety efforts in mozilla::pkix, and we should
// find a way to provide a more-obviously-safe interface.
virtual Result DigestBuf(Input item, DigestAlgorithm digestAlg,
/*out*/ uint8_t* digestBuf, size_t digestBufLen) = 0;
protected:
TrustDomain() {}
TrustDomain(const TrustDomain&) = delete;
void operator=(const TrustDomain&) = delete;
};
enum class FallBackToSearchWithinSubject { No = 0, Yes = 1 };
// Applications control the behavior of matching presented name information from
// a certificate against a reference hostname by implementing the
// NameMatchingPolicy interface. Used in concert with CheckCertHostname.
class NameMatchingPolicy {
public:
virtual ~NameMatchingPolicy() {}
// Given that the certificate in question has a notBefore field with the given
// value, should name matching fall back to searching within the subject
// common name field?
virtual Result FallBackToCommonName(
Time notBefore,
/*out*/ FallBackToSearchWithinSubject& fallBackToCommonName) = 0;
protected:
NameMatchingPolicy() {}
NameMatchingPolicy(const NameMatchingPolicy&) = delete;
void operator=(const NameMatchingPolicy&) = delete;
};
}
} // namespace mozilla::pkix
#endif // mozilla_pkix_pkixtypes_h

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@ -0,0 +1,265 @@
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This code is made available to you under your choice of the following sets
* of licensing terms:
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
/* Copyright 2013 Mozilla Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef mozilla_pkix_pkixutil_h
#define mozilla_pkix_pkixutil_h
#include "mozpkix/pkixder.h"
namespace mozilla {
namespace pkix {
// During path building and verification, we build a linked list of BackCerts
// from the current cert toward the end-entity certificate. The linked list
// is used to verify properties that aren't local to the current certificate
// and/or the direct link between the current certificate and its issuer,
// such as name constraints.
//
// Each BackCert contains pointers to all the given certificate's extensions
// so that we can parse the extension block once and then process the
// extensions in an order that may be different than they appear in the cert.
class BackCert final {
public:
// certDER and childCert must be valid for the lifetime of BackCert.
BackCert(Input aCertDER, EndEntityOrCA aEndEntityOrCA,
const BackCert* aChildCert)
: der(aCertDER),
endEntityOrCA(aEndEntityOrCA),
childCert(aChildCert),
version(der::Version::Uninitialized) {}
Result Init();
const Input GetDER() const { return der; }
const der::SignedDataWithSignature& GetSignedData() const {
return signedData;
}
der::Version GetVersion() const { return version; }
const Input GetSerialNumber() const { return serialNumber; }
const Input GetSignature() const { return signature; }
const Input GetIssuer() const { return issuer; }
// XXX: "validity" is a horrible name for the structure that holds
// notBefore & notAfter, but that is the name used in RFC 5280 and we use the
// RFC 5280 names for everything.
const Input GetValidity() const { return validity; }
const Input GetSubject() const { return subject; }
const Input GetSubjectPublicKeyInfo() const { return subjectPublicKeyInfo; }
const Input* GetAuthorityInfoAccess() const {
return MaybeInput(authorityInfoAccess);
}
const Input* GetBasicConstraints() const {
return MaybeInput(basicConstraints);
}
const Input* GetCertificatePolicies() const {
return MaybeInput(certificatePolicies);
}
const Input* GetExtKeyUsage() const { return MaybeInput(extKeyUsage); }
const Input* GetKeyUsage() const { return MaybeInput(keyUsage); }
const Input* GetInhibitAnyPolicy() const {
return MaybeInput(inhibitAnyPolicy);
}
const Input* GetNameConstraints() const {
return MaybeInput(nameConstraints);
}
const Input* GetSubjectAltName() const { return MaybeInput(subjectAltName); }
const Input* GetRequiredTLSFeatures() const {
return MaybeInput(requiredTLSFeatures);
}
const Input* GetSignedCertificateTimestamps() const {
return MaybeInput(signedCertificateTimestamps);
}
private:
const Input der;
public:
const EndEntityOrCA endEntityOrCA;
BackCert const* const childCert;
private:
// When parsing certificates in BackCert::Init, we don't accept empty
// extensions. Consequently, we don't have to store a distinction between
// empty extensions and extensions that weren't included. However, when
// *processing* extensions, we distinguish between whether an extension was
// included or not based on whetehr the GetXXX function for the extension
// returns nullptr.
static inline const Input* MaybeInput(const Input& item) {
return item.GetLength() > 0 ? &item : nullptr;
}
der::SignedDataWithSignature signedData;
der::Version version;
Input serialNumber;
Input signature;
Input issuer;
// XXX: "validity" is a horrible name for the structure that holds
// notBefore & notAfter, but that is the name used in RFC 5280 and we use the
// RFC 5280 names for everything.
Input validity;
Input subject;
Input subjectPublicKeyInfo;
Input authorityInfoAccess;
Input basicConstraints;
Input certificatePolicies;
Input extKeyUsage;
Input inhibitAnyPolicy;
Input keyUsage;
Input nameConstraints;
Input subjectAltName;
Input criticalNetscapeCertificateType;
Input requiredTLSFeatures;
Input signedCertificateTimestamps; // RFC 6962 (Certificate Transparency)
Result RememberExtension(Reader& extnID, Input extnValue, bool critical,
/*out*/ bool& understood);
BackCert(const BackCert&) = delete;
void operator=(const BackCert&) = delete;
};
class NonOwningDERArray final : public DERArray {
public:
NonOwningDERArray() : numItems(0) {
// we don't need to initialize the items array because we always check
// numItems before accessing i.
}
size_t GetLength() const override { return numItems; }
const Input* GetDER(size_t i) const override {
return i < numItems ? &items[i] : nullptr;
}
Result Append(Input der) {
if (numItems >= MAX_LENGTH) {
return Result::FATAL_ERROR_INVALID_ARGS;
}
Result rv = items[numItems].Init(der); // structure assignment
if (rv != Success) {
return rv;
}
++numItems;
return Success;
}
// Public so we can static_assert on this. Keep in sync with MAX_SUBCA_COUNT.
static const size_t MAX_LENGTH = 8;
private:
Input items[MAX_LENGTH]; // avoids any heap allocations
size_t numItems;
NonOwningDERArray(const NonOwningDERArray&) = delete;
void operator=(const NonOwningDERArray&) = delete;
};
// Extracts the SignedCertificateTimestampList structure which is encoded as an
// OCTET STRING within the X.509v3 / OCSP extensions (see RFC 6962 section 3.3).
Result ExtractSignedCertificateTimestampListFromExtension(Input extnValue,
Input& sctList);
inline unsigned int DaysBeforeYear(unsigned int year) {
assert(year <= 9999);
return ((year - 1u) * 365u) +
((year - 1u) / 4u) // leap years are every 4 years,
- ((year - 1u) / 100u) // except years divisible by 100,
+ ((year - 1u) / 400u); // except years divisible by 400.
}
static const size_t MAX_DIGEST_SIZE_IN_BYTES = 512 / 8; // sha-512
Result DigestSignedData(TrustDomain& trustDomain,
const der::SignedDataWithSignature& signedData,
/*out*/ uint8_t (&digestBuf)[MAX_DIGEST_SIZE_IN_BYTES],
/*out*/ der::PublicKeyAlgorithm& publicKeyAlg,
/*out*/ SignedDigest& signedDigest);
Result VerifySignedDigest(TrustDomain& trustDomain,
der::PublicKeyAlgorithm publicKeyAlg,
const SignedDigest& signedDigest,
Input signerSubjectPublicKeyInfo);
// Combines DigestSignedData and VerifySignedDigest
Result VerifySignedData(TrustDomain& trustDomain,
const der::SignedDataWithSignature& signedData,
Input signerSubjectPublicKeyInfo);
// Extracts the key parameters from |subjectPublicKeyInfo|, invoking
// the relevant methods of |trustDomain|.
Result CheckSubjectPublicKeyInfo(Input subjectPublicKeyInfo,
TrustDomain& trustDomain,
EndEntityOrCA endEntityOrCA);
// In a switch over an enum, sometimes some compilers are not satisfied that
// all control flow paths have been considered unless there is a default case.
// However, in our code, such a default case is almost always unreachable dead
// code. That can be particularly problematic when the compiler wants the code
// to choose a value, such as a return value, for the default case, but there's
// no appropriate "impossible case" value to choose.
//
// MOZILLA_PKIX_UNREACHABLE_DEFAULT_ENUM accounts for this. Example:
//
// // In xy.cpp
// #include "xt.h"
//
// enum class XY { X, Y };
//
// int func(XY xy) {
// switch (xy) {
// case XY::X: return 1;
// case XY::Y; return 2;
// MOZILLA_PKIX_UNREACHABLE_DEFAULT_ENUM
// }
// }
#if defined(__clang__)
// Clang will warn if not all cases are covered (-Wswitch-enum) AND it will
// warn if a switch statement that covers every enum label has a default case
// (-W-covered-switch-default). Versions prior to 3.5 warned about unreachable
// code in such default cases (-Wunreachable-code) even when
// -W-covered-switch-default was disabled, but that changed in Clang 3.5.
#define MOZILLA_PKIX_UNREACHABLE_DEFAULT_ENUM // empty
#elif defined(__GNUC__)
// GCC will warn if not all cases are covered (-Wswitch-enum). It does not
// assume that the default case is unreachable.
#define MOZILLA_PKIX_UNREACHABLE_DEFAULT_ENUM \
default: \
assert(false); \
__builtin_unreachable();
#elif defined(_MSC_VER)
// MSVC will warn if not all cases are covered (C4061, level 4). It does not
// assume that the default case is unreachable.
#define MOZILLA_PKIX_UNREACHABLE_DEFAULT_ENUM \
default: \
assert(false); \
__assume(0);
#else
#error Unsupported compiler for MOZILLA_PKIX_UNREACHABLE_DEFAULT.
#endif
}
} // namespace mozilla::pkix
#endif // mozilla_pkix_pkixutil_h