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1215 lines (1083 loc) · 39.3 KB
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#include "crypto/crypto_x509.h"
#include "base_object-inl.h"
#include "crypto/crypto_common.h"
#include "crypto/crypto_keys.h"
#include "crypto/crypto_util.h"
#include "env-inl.h"
#include "memory_tracker-inl.h"
#include "ncrypto.h"
#include "node_errors.h"
#include "util-inl.h"
#include "uv.h"
#include "v8.h"
#include <array>
#include <limits>
#include <string>
#include <string_view>
#include <vector>
namespace node {
using ncrypto::BignumPointer;
using ncrypto::BIOPointer;
using ncrypto::ClearErrorOnReturn;
using ncrypto::DataPointer;
using ncrypto::Digest;
using ncrypto::MarkPopErrorOnReturn;
using ncrypto::SSLPointer;
using ncrypto::X509Name;
using ncrypto::X509Pointer;
using ncrypto::X509View;
using v8::Array;
using v8::ArrayBuffer;
using v8::ArrayBufferView;
using v8::Boolean;
using v8::Context;
using v8::Date;
using v8::DictionaryTemplate;
using v8::EscapableHandleScope;
using v8::Function;
using v8::FunctionCallbackInfo;
using v8::FunctionTemplate;
using v8::Integer;
using v8::Isolate;
using v8::Local;
using v8::LocalVector;
using v8::MaybeLocal;
using v8::NewStringType;
using v8::Null;
using v8::Object;
using v8::String;
using v8::Uint32;
using v8::Undefined;
using v8::Value;
namespace crypto {
ManagedX509::ManagedX509(X509Pointer&& cert) : cert_(std::move(cert)) {}
ManagedX509::ManagedX509(const ManagedX509& that) {
*this = that;
}
ManagedX509& ManagedX509::operator=(const ManagedX509& that) {
cert_.reset(that.get());
if (cert_) [[likely]]
X509_up_ref(cert_.get());
return *this;
}
void ManagedX509::MemoryInfo(MemoryTracker* tracker) const {
if (!cert_) return;
MarkPopErrorOnReturn mark_pop_error_on_return;
// This is an approximation based on the der encoding size.
const int size = i2d_X509(cert_.get(), nullptr);
if (size > 0) tracker->TrackFieldWithSize("cert", size);
}
namespace {
enum class MalformedSubjectAltNameMode {
kThrow,
kReturnLegacySentinel,
};
constexpr std::string_view kMalformedSubjectAltName = "DNS:";
MaybeLocal<Value> GetFingerprintDigest(Environment* env,
const Digest& method,
const X509View& cert) {
auto fingerprint = cert.getFingerprint(method);
// Returning an empty string indicates that the digest failed for
// some reason.
if (!fingerprint.has_value()) [[unlikely]] {
return Undefined(env->isolate());
}
auto& fp = fingerprint.value();
return OneByteString(env->isolate(), fp.data(), fp.length());
}
template <const ncrypto::Digest& algo>
void Fingerprint(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
Local<Value> ret;
if (GetFingerprintDigest(env, algo, cert->view()).ToLocal(&ret)) {
args.GetReturnValue().Set(ret);
}
}
MaybeLocal<String> ToV8Value(Environment* env, std::string_view val) {
return String::NewFromUtf8(
env->isolate(), val.data(), NewStringType::kNormal, val.size());
}
MaybeLocal<Value> ToV8Value(Local<Context> context, BIOPointer&& bio) {
if (!bio) [[unlikely]]
return {};
BUF_MEM* mem = bio;
if (!mem) [[unlikely]]
return {};
Local<Value> ret;
if (!String::NewFromUtf8(Isolate::GetCurrent(),
mem->data,
NewStringType::kNormal,
mem->length)
.ToLocal(&ret))
return {};
return ret;
}
MaybeLocal<Value> ToV8Value(Local<Context> context, const BIOPointer& bio) {
if (!bio) [[unlikely]]
return {};
BUF_MEM* mem = bio;
if (!mem) [[unlikely]]
return {};
Local<Value> ret;
if (!String::NewFromUtf8(Isolate::GetCurrent(),
mem->data,
NewStringType::kNormal,
mem->length)
.ToLocal(&ret))
return {};
return ret;
}
MaybeLocal<Value> ToBuffer(Environment* env, BIOPointer* bio) {
if (bio == nullptr || !*bio) [[unlikely]]
return {};
BUF_MEM* mem = *bio;
if (!mem) [[unlikely]]
return {};
auto backing = AdoptIntoBackingStore(
env->isolate(),
mem->data,
mem->length,
[](void*, size_t, void* data) {
BIOPointer free_me(static_cast<BIO*>(data));
},
bio->release());
if (!backing) {
THROW_ERR_MEMORY_ALLOCATION_FAILED(env);
return MaybeLocal<Value>();
}
auto ab = ArrayBuffer::New(env->isolate(), std::move(backing));
Local<Value> ret;
if (!Buffer::New(env, ab, 0, ab->ByteLength()).ToLocal(&ret)) return {};
return ret;
}
MaybeLocal<Value> GetDer(Environment* env, const X509View& view) {
Local<Value> ret;
auto bio = view.toDER();
if (!bio) [[unlikely]]
return Undefined(env->isolate());
if (!ToBuffer(env, &bio).ToLocal(&ret)) {
return {};
}
return ret;
}
MaybeLocal<Value> GetSubjectAltNameString(
Environment* env,
const X509View& view,
MalformedSubjectAltNameMode malformed_name_mode) {
Local<Value> ret;
bool has_extension = false;
auto bio = view.getSubjectAltName(&has_extension);
if (!bio) [[unlikely]] {
// An absent SAN maps to undefined. A malformed, present SAN throws for
// direct X509Certificate inspection, while the legacy TLS object uses a
// deliberately nonmatching value to prevent commonName fallback.
if (!has_extension) return Undefined(env->isolate());
if (malformed_name_mode ==
MalformedSubjectAltNameMode::kReturnLegacySentinel) {
// The legacy object is used by TLS hostname verification. Return an
// empty DNS name so verification cannot fall back to the common name,
// while keeping getPeerCertificate() usable for malformed certificates.
return OneByteString(env->isolate(), kMalformedSubjectAltName);
}
THROW_ERR_CRYPTO_OPERATION_FAILED(
env, "Failed to format subject alternative name");
return {};
}
if (!ToV8Value(env->context(), bio).ToLocal(&ret)) return {};
return ret;
}
MaybeLocal<Value> GetInfoAccessString(Environment* env, const X509View& view) {
Local<Value> ret;
auto bio = view.getInfoAccess();
if (!bio) [[unlikely]]
return Undefined(env->isolate());
if (!ToV8Value(env->context(), bio).ToLocal(&ret)) {
return {};
}
return ret;
}
MaybeLocal<Value> GetValidFrom(Environment* env, const X509View& view) {
Local<Value> ret;
auto bio = view.getValidFrom();
if (!bio) [[unlikely]]
return Undefined(env->isolate());
if (!ToV8Value(env->context(), bio).ToLocal(&ret)) {
return {};
}
return ret;
}
MaybeLocal<Value> GetValidTo(Environment* env, const X509View& view) {
Local<Value> ret;
auto bio = view.getValidTo();
if (!bio) [[unlikely]]
return Undefined(env->isolate());
if (!ToV8Value(env->context(), bio).ToLocal(&ret)) {
return {};
}
return ret;
}
MaybeLocal<Value> GetValidFromDate(Environment* env, const X509View& view) {
const auto valid_from_time = view.getValidFromTime();
const double milliseconds = valid_from_time.has_value()
? valid_from_time.value() * 1000.
: std::numeric_limits<double>::quiet_NaN();
return Date::New(env->context(), milliseconds);
}
MaybeLocal<Value> GetValidToDate(Environment* env, const X509View& view) {
const auto valid_to_time = view.getValidToTime();
const double milliseconds = valid_to_time.has_value()
? valid_to_time.value() * 1000.
: std::numeric_limits<double>::quiet_NaN();
return Date::New(env->context(), milliseconds);
}
MaybeLocal<Value> GetSignatureAlgorithm(Environment* env,
const X509View& view) {
auto algo = view.getSignatureAlgorithm();
if (!algo.has_value()) [[unlikely]]
return Undefined(env->isolate());
Local<Value> ret;
if (!ToV8Value(env, algo.value()).ToLocal(&ret)) {
return {};
}
return ret;
}
MaybeLocal<Value> GetSignatureAlgorithmOID(Environment* env,
const X509View& view) {
auto oid = view.getSignatureAlgorithmOID();
if (!oid.has_value()) [[unlikely]]
return Undefined(env->isolate());
Local<Value> ret;
if (!ToV8Value(env, oid.value()).ToLocal(&ret)) {
return {};
}
return ret;
}
MaybeLocal<Value> GetSerialNumber(Environment* env, const X509View& view) {
if (auto serial = view.getSerialNumber()) {
return ToV8Value(
env, ToUpper(std::string_view(static_cast<char*>(serial.get()))));
}
return Undefined(env->isolate());
}
MaybeLocal<Value> GetKeyUsage(Environment* env, const X509View& cert) {
LocalVector<Value> vec(env->isolate());
bool res = cert.enumUsages([&](std::string_view view) {
vec.push_back(OneByteString(env->isolate(), view));
});
if (!res) return Undefined(env->isolate());
return Array::New(env->isolate(), vec.data(), vec.size());
}
void Pem(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
Local<Value> ret;
if (ToV8Value(env->context(), cert->view().toPEM()).ToLocal(&ret)) {
args.GetReturnValue().Set(ret);
}
}
void Der(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
Local<Value> ret;
if (GetDer(env, cert->view()).ToLocal(&ret)) {
args.GetReturnValue().Set(ret);
}
}
void Subject(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
Local<Value> ret;
if (ToV8Value(env->context(), cert->view().getSubject()).ToLocal(&ret)) {
args.GetReturnValue().Set(ret);
}
}
void SubjectAltName(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
Local<Value> ret;
if (GetSubjectAltNameString(
env, cert->view(), MalformedSubjectAltNameMode::kThrow)
.ToLocal(&ret)) {
args.GetReturnValue().Set(ret);
}
}
void Issuer(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
Local<Value> ret;
if (ToV8Value(env->context(), cert->view().getIssuer()).ToLocal(&ret)) {
args.GetReturnValue().Set(ret);
}
}
void InfoAccess(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
Local<Value> ret;
if (GetInfoAccessString(env, cert->view()).ToLocal(&ret)) {
args.GetReturnValue().Set(ret);
}
}
void ValidFrom(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
Local<Value> ret;
if (GetValidFrom(env, cert->view()).ToLocal(&ret)) {
args.GetReturnValue().Set(ret);
}
}
void ValidTo(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
Local<Value> ret;
if (GetValidTo(env, cert->view()).ToLocal(&ret)) {
args.GetReturnValue().Set(ret);
}
}
void ValidFromDate(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
Local<Value> ret;
if (GetValidFromDate(env, cert->view()).ToLocal(&ret)) {
args.GetReturnValue().Set(ret);
}
}
void ValidToDate(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
Local<Value> ret;
if (GetValidToDate(env, cert->view()).ToLocal(&ret)) {
args.GetReturnValue().Set(ret);
}
}
void SignatureAlgorithm(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
Local<Value> ret;
if (GetSignatureAlgorithm(env, cert->view()).ToLocal(&ret)) {
args.GetReturnValue().Set(ret);
}
}
void SignatureAlgorithmOID(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
Local<Value> ret;
if (GetSignatureAlgorithmOID(env, cert->view()).ToLocal(&ret)) {
args.GetReturnValue().Set(ret);
}
}
void SerialNumber(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
Local<Value> ret;
if (GetSerialNumber(env, cert->view()).ToLocal(&ret)) {
args.GetReturnValue().Set(ret);
}
}
void PublicKey(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
// TODO(tniessen): consider checking X509_get_pubkey() when the
// X509Certificate object is being created.
auto result = cert->view().getPublicKey();
if (!result.value) [[unlikely]] {
ThrowCryptoError(env, result.error.value_or(0));
return;
}
auto key_data =
KeyObjectData::CreateAsymmetric(kKeyTypePublic, std::move(result.value));
Local<Value> ret;
if (key_data && KeyObjectHandle::Create(env, key_data).ToLocal(&ret)) {
args.GetReturnValue().Set(ret);
}
}
void KeyUsage(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
Local<Value> ret;
if (GetKeyUsage(env, cert->view()).ToLocal(&ret)) {
args.GetReturnValue().Set(ret);
}
}
void CheckCA(const FunctionCallbackInfo<Value>& args) {
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
args.GetReturnValue().Set(cert->view().isCA());
}
void CheckIssued(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
CHECK(args[0]->IsObject());
CHECK(X509Certificate::HasInstance(env, args[0].As<Object>()));
X509Certificate* issuer;
ASSIGN_OR_RETURN_UNWRAP(&issuer, args[0]);
args.GetReturnValue().Set(cert->view().isIssuedBy(issuer->view()));
}
void CheckPrivateKey(const FunctionCallbackInfo<Value>& args) {
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
CHECK(args[0]->IsObject());
KeyObjectHandle* key;
ASSIGN_OR_RETURN_UNWRAP(&key, args[0]);
CHECK_EQ(key->Data().GetKeyType(), kKeyTypePrivate);
args.GetReturnValue().Set(
cert->view().checkPrivateKey(key->Data().GetAsymmetricKey()));
}
void CheckPublicKey(const FunctionCallbackInfo<Value>& args) {
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
CHECK(args[0]->IsObject());
KeyObjectHandle* key;
ASSIGN_OR_RETURN_UNWRAP(&key, args[0]);
// A Public Key can be derived from a private key, so we allow both.
CHECK_NE(key->Data().GetKeyType(), kKeyTypeSecret);
args.GetReturnValue().Set(
cert->view().checkPublicKey(key->Data().GetAsymmetricKey()));
}
template <typename F>
void CheckX509Subject(const FunctionCallbackInfo<Value>& args, F check) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
CHECK(args[0]->IsString()); // subject
CHECK(args[1]->IsUint32()); // flags
Utf8Value subject(env->isolate(), args[0]);
uint32_t flags = args[1].As<Uint32>()->Value();
DataPointer matched_subject;
X509View view = cert->view();
auto result = check(view, subject.ToStringView(), flags, &matched_subject);
switch (result) {
case X509View::CheckMatch::MATCH: {
Local<Value> ret = args[0];
if (matched_subject) {
ret = OneByteString(env->isolate(),
matched_subject.get<const char>(),
matched_subject.size());
}
return args.GetReturnValue().Set(ret);
}
case X509View::CheckMatch::NO_MATCH:
break; // No return value is set.
case X509View::CheckMatch::INVALID_NAME:
return THROW_ERR_INVALID_ARG_VALUE(env, "Invalid name");
default:
return THROW_ERR_CRYPTO_OPERATION_FAILED(env);
}
}
void CheckHost(const FunctionCallbackInfo<Value>& args) {
CheckX509Subject(
args,
[](X509View& cert,
std::string_view subject,
uint32_t flags,
DataPointer* match) { return cert.checkHost(subject, flags, match); });
}
void CheckEmail(const FunctionCallbackInfo<Value>& args) {
CheckX509Subject(
args,
[](X509View& cert,
std::string_view subject,
uint32_t flags,
DataPointer*) { return cert.checkEmail(subject, flags); });
}
void CheckIP(const FunctionCallbackInfo<Value>& args) {
CheckX509Subject(
args,
[](X509View& cert,
std::string_view subject,
uint32_t flags,
DataPointer*) {
if (subject.find('\0') != std::string_view::npos ||
subject.find('%') != std::string_view::npos) {
return X509View::CheckMatch::INVALID_NAME;
}
const std::string input(subject);
std::array<unsigned char, 16> address{};
size_t length = 0;
if (uv_inet_pton(AF_INET, input.c_str(), address.data()) == 0) {
length = 4;
} else if (uv_inet_pton(AF_INET6, input.c_str(), address.data()) == 0) {
length = 16;
} else {
return X509View::CheckMatch::INVALID_NAME;
}
return cert.checkIp({.data = address.data(), .len = length}, flags);
});
}
void GetIssuerCert(const FunctionCallbackInfo<Value>& args) {
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
auto issuer = cert->getIssuerCert();
if (issuer) args.GetReturnValue().Set(issuer->object());
}
void Parse(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
CHECK(args[0]->IsArrayBufferView());
ArrayBufferViewContents<unsigned char> buf(args[0].As<ArrayBufferView>());
Local<Object> cert;
auto result = X509Pointer::Parse(ncrypto::Buffer<const unsigned char>{
.data = buf.data(),
.len = buf.length(),
});
if (!result.value) [[unlikely]] {
return ThrowCryptoError(env, result.error.value_or(0));
}
if (X509Certificate::New(env, std::move(result.value)).ToLocal(&cert)) {
args.GetReturnValue().Set(cert);
}
}
void ToLegacy(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.This());
ClearErrorOnReturn clear_error_on_return;
Local<Value> ret;
if (cert->toObject(env).ToLocal(&ret)) {
args.GetReturnValue().Set(ret);
}
}
template <typename T>
bool Set(Environment* env,
Local<Object> target,
Local<Value> name,
MaybeLocal<T> maybe_value) {
Local<Value> value;
if (!maybe_value.ToLocal(&value)) [[unlikely]]
return false;
// Undefined is ignored, but still considered successful
if (value->IsUndefined()) return true;
return !target->Set(env->context(), name, value).IsNothing();
}
template <typename T>
bool Set(Environment* env,
Local<Object> target,
uint32_t index,
MaybeLocal<T> maybe_value) {
Local<Value> value;
if (!maybe_value.ToLocal(&value)) [[unlikely]]
return false;
// Undefined is ignored, but still considered successful
if (value->IsUndefined()) return true;
return !target->Set(env->context(), index, value).IsNothing();
}
// Convert an X509_NAME* into a JavaScript object.
// Each entry of the name is converted into a property of the object.
// The property value may be a single string or an array of strings.
static MaybeLocal<Value> GetX509NameObject(Environment* env,
const X509Name& name) {
if (!name) return {};
Local<Value> v8_name;
Local<Value> v8_value;
// Note the the resulting object uses a null prototype.
Local<Object> result =
Object::New(env->isolate(), Null(env->isolate()), nullptr, nullptr, 0);
if (result.IsEmpty()) return {};
for (auto entry : name) {
if (!entry.has_value()) [[unlikely]] {
THROW_ERR_CRYPTO_OPERATION_FAILED(env,
"Failed to convert X509 name to UTF-8");
return {};
}
const auto& [key, value] = *entry;
// The legacy object can only represent string values. Preserve valid
// sibling attributes and omit values that cannot be converted to UTF-8.
if (!value.has_value()) continue;
if (!ToV8Value(env, key).ToLocal(&v8_name) ||
!ToV8Value(env, *value).ToLocal(&v8_value)) {
return {};
}
// For backward compatibility, we only create arrays if multiple values
// exist for the same key. That is not great but there is not much we can
// change here without breaking things. Note that this creates nested data
// structures, yet still does not allow representing Distinguished Names
// accurately.
bool multiple;
if (!result->Has(env->context(), v8_name).To(&multiple)) {
return {};
}
if (multiple) {
Local<Value> accum;
if (!result->Get(env->context(), v8_name).ToLocal(&accum)) {
return {};
}
if (!accum->IsArray()) {
Local<Value> items[] = {
accum,
v8_value,
};
accum = Array::New(env->isolate(), items, arraysize(items));
if (!Set<Value>(env, result, v8_name, accum)) {
return {};
}
} else {
Local<Array> array = accum.As<Array>();
if (!Set<Value>(env, array, array->Length(), v8_value)) {
return {};
}
}
continue;
}
if (!Set<Value>(env, result, v8_name, v8_value)) {
return {};
}
}
return result;
}
MaybeLocal<Object> GetPubKey(Environment* env, const ncrypto::Rsa& rsa) {
auto bio = rsa.derPublicKey();
Local<Value> ret;
if (!ToBuffer(env, &bio).ToLocal(&ret)) return {};
return ret.As<Object>();
}
MaybeLocal<Value> GetModulusString(Environment* env, const BIGNUM* n) {
auto bio = BIOPointer::New(n);
if (!bio) [[unlikely]]
return {};
return ToV8Value(env->context(), bio);
}
MaybeLocal<Value> GetExponentString(Environment* env, const BIGNUM* e) {
if (e == nullptr) return Null(env->isolate());
MarkPopErrorOnReturn mark_pop_error_on_return;
auto bio = BIOPointer::NewMem();
if (!bio) [[unlikely]]
return {};
if (!BIOPointer::WriteAll(bio, "0x") || BN_print(bio.get(), e) != 1) {
return {};
}
return ToV8Value(env->context(), bio);
}
MaybeLocal<Value> GetECPubKey(Environment* env, const ncrypto::Ec& ec) {
const auto group = ec.getGroup();
const auto pubkey = ec.getPublicKey();
if (pubkey == nullptr) [[unlikely]]
return Undefined(env->isolate());
return ECPointToBuffer(env, group, pubkey, ec.getPointConversionForm())
.FromMaybe(Local<Object>());
}
MaybeLocal<Value> GetECGroupBits(Environment* env, const EC_GROUP* group) {
if (group == nullptr) [[unlikely]]
return Undefined(env->isolate());
int bits = EC_GROUP_order_bits(group);
if (bits <= 0) return Undefined(env->isolate());
return Integer::New(env->isolate(), bits);
}
template <const char* (*nid2string)(int nid)>
MaybeLocal<Value> GetCurveName(Environment* env, const int nid) {
const char* const curve_name = nid2string(nid);
if (curve_name == nullptr) return Undefined(env->isolate());
const std::string_view name = curve_name;
return name.size() ? MaybeLocal<Value>(OneByteString(env->isolate(), name))
: MaybeLocal<Value>(Undefined(env->isolate()));
}
MaybeLocal<Object> X509ToObject(Environment* env, const X509View& cert) {
EscapableHandleScope scope(env->isolate());
auto tmpl = env->x509_dictionary_template();
if (tmpl.IsEmpty()) {
static constexpr std::string_view names[] = {
"subject",
"issuer",
"subjectaltname",
"infoAccess",
"ca",
"modulus",
"exponent",
"pubkey",
"bits",
"valid_from",
"valid_to",
"fingerprint",
"fingerprint256",
"fingerprint512",
"ext_key_usage",
"serialNumber",
"raw",
"asn1Curve",
"nistCurve",
};
tmpl = DictionaryTemplate::New(env->isolate(), names);
env->set_x509_dictionary_template(tmpl);
}
Local<Value> subject;
if (!GetX509NameObject(env, cert.getSubjectName()).ToLocal(&subject)) {
return {};
}
Local<Value> issuer;
if (!GetX509NameObject(env, cert.getIssuerName()).ToLocal(&issuer)) {
return {};
}
MaybeLocal<Value> values[] = {
subject,
issuer,
GetSubjectAltNameString(
env, cert, MalformedSubjectAltNameMode::kReturnLegacySentinel),
GetInfoAccessString(env, cert),
Boolean::New(env->isolate(), cert.isCA()),
Undefined(env->isolate()), // modulus
Undefined(env->isolate()), // exponent
Undefined(env->isolate()), // pubkey
Undefined(env->isolate()), // bits
GetValidFrom(env, cert),
GetValidTo(env, cert),
GetFingerprintDigest(env, Digest::SHA1, cert),
GetFingerprintDigest(env, Digest::SHA256, cert),
GetFingerprintDigest(env, Digest::SHA512, cert),
GetKeyUsage(env, cert),
GetSerialNumber(env, cert),
GetDer(env, cert),
Undefined(env->isolate()), // asn1curve
Undefined(env->isolate()), // nistcurve
};
// X509_get0_pubkey() fails when the linked OpenSSL cannot decode the
// certificate's public key (e.g. an unsupported curve in FIPS builds).
// ifRsa()/ifEc() assume a decodable key, so leave the key-specific
// fields undefined in that case.
const bool has_public_key = [&] {
MarkPopErrorOnReturn mark_pop_error_on_return;
return X509_get0_pubkey(cert.get()) != nullptr;
}();
if (!has_public_key) {
return scope.EscapeMaybe(
NewDictionaryInstance(env->context(), tmpl, values));
}
cert.ifRsa([&](const ncrypto::Rsa& rsa) {
auto pub_key = rsa.getPublicKey();
values[5] = GetModulusString(env, pub_key.n); // modulus
values[6] = GetExponentString(env, pub_key.e); // exponent
values[7] = GetPubKey(env, rsa); // pubkey
values[8] = Integer::New(env->isolate(),
BignumPointer::GetBitCount(pub_key.n)); // bits
// TODO(@jasnell): The true response is a left-over from the original
// non DictionaryTemplate-based implementation. It can be removed later.
return true;
});
cert.ifEc([&](const ncrypto::Ec& ec) {
const auto group = ec.getGroup();
values[7] = GetECPubKey(env, ec); // pubkey
values[8] = GetECGroupBits(env, group); // bits
const int nid = ec.getCurve();
if (nid != 0) {
// Curve is well-known, get its OID and NIST nick-name (if it has
// one).
values[17] = GetCurveName<OBJ_nid2sn>(env, nid); // asn1curve
values[18] = GetCurveName<EC_curve_nid2nist>(env, nid); // nistcurve
}
// Unnamed curves can be described by their mathematical properties,
// but aren't used much (at all?) with X.509/TLS. Support later if
// needed.
return true;
});
return scope.EscapeMaybe(NewDictionaryInstance(env->context(), tmpl, values));
}
} // namespace
Local<FunctionTemplate> X509Certificate::GetConstructorTemplate(
Environment* env) {
Local<FunctionTemplate> tmpl = env->x509_constructor_template();
if (tmpl.IsEmpty()) {
Isolate* isolate = env->isolate();
tmpl = NewFunctionTemplate(isolate, NewFromHandle);
tmpl->InstanceTemplate()->SetInternalFieldCount(
X509Certificate::kInternalFieldCount);
tmpl->SetClassName(
FIXED_ONE_BYTE_STRING(env->isolate(), "X509Certificate"));
SetProtoMethodNoSideEffect(isolate, tmpl, "subject", Subject);
SetProtoMethodNoSideEffect(isolate, tmpl, "subjectAltName", SubjectAltName);
SetProtoMethodNoSideEffect(isolate, tmpl, "infoAccess", InfoAccess);
SetProtoMethodNoSideEffect(isolate, tmpl, "issuer", Issuer);
SetProtoMethodNoSideEffect(isolate, tmpl, "validTo", ValidTo);
SetProtoMethodNoSideEffect(isolate, tmpl, "validFrom", ValidFrom);
SetProtoMethodNoSideEffect(isolate, tmpl, "validToDate", ValidToDate);
SetProtoMethodNoSideEffect(isolate, tmpl, "validFromDate", ValidFromDate);
SetProtoMethodNoSideEffect(
isolate, tmpl, "signatureAlgorithm", SignatureAlgorithm);
SetProtoMethodNoSideEffect(
isolate, tmpl, "signatureAlgorithmOid", SignatureAlgorithmOID);
SetProtoMethodNoSideEffect(
isolate, tmpl, "fingerprint", Fingerprint<Digest::SHA1>);
SetProtoMethodNoSideEffect(
isolate, tmpl, "fingerprint256", Fingerprint<Digest::SHA256>);
SetProtoMethodNoSideEffect(
isolate, tmpl, "fingerprint512", Fingerprint<Digest::SHA512>);
SetProtoMethodNoSideEffect(isolate, tmpl, "keyUsage", KeyUsage);
SetProtoMethodNoSideEffect(isolate, tmpl, "serialNumber", SerialNumber);
SetProtoMethodNoSideEffect(isolate, tmpl, "pem", Pem);
SetProtoMethodNoSideEffect(isolate, tmpl, "raw", Der);
SetProtoMethodNoSideEffect(isolate, tmpl, "publicKey", PublicKey);
SetProtoMethodNoSideEffect(isolate, tmpl, "checkCA", CheckCA);
SetProtoMethodNoSideEffect(isolate, tmpl, "checkHost", CheckHost);
SetProtoMethodNoSideEffect(isolate, tmpl, "checkEmail", CheckEmail);
SetProtoMethodNoSideEffect(isolate, tmpl, "checkIP", CheckIP);
SetProtoMethodNoSideEffect(isolate, tmpl, "checkIssued", CheckIssued);
SetProtoMethodNoSideEffect(
isolate, tmpl, "checkPrivateKey", CheckPrivateKey);
SetProtoMethodNoSideEffect(isolate, tmpl, "verify", CheckPublicKey);
SetProtoMethodNoSideEffect(isolate, tmpl, "toLegacy", ToLegacy);
SetProtoMethodNoSideEffect(isolate, tmpl, "getIssuerCert", GetIssuerCert);
env->set_x509_constructor_template(tmpl);
}
return tmpl;
}
bool X509Certificate::HasInstance(Environment* env, Local<Value> value) {
return GetConstructorTemplate(env)->HasInstance(value);
}
void X509Certificate::NewFromHandle(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
if (args.Length() == 1 && args[0]->IsArrayBufferView()) {
ArrayBufferViewContents<unsigned char> buf(args[0].As<ArrayBufferView>());
auto result = X509Pointer::Parse(ncrypto::Buffer<const unsigned char>{
.data = buf.data(),
.len = buf.length(),
});
if (!result.value) [[unlikely]] {
return ThrowCryptoError(env, result.error.value_or(0));
}
new X509Certificate(env,
args.This(),
std::make_shared<ManagedX509>(std::move(result.value)));
return;
}
if (args.Length() != 1 || !HasInstance(env, args[0])) {
THROW_ERR_INVALID_ARG_TYPE(
env, "value must be an X509CertificateHandle or BufferSource");
return;
}
X509Certificate* handle = Unwrap<X509Certificate>(args[0].As<Object>());
CHECK_NOT_NULL(handle);
Local<Object> issuer;
if (handle->issuer_cert_) issuer = handle->issuer_cert_->object();
new X509Certificate(env, args.This(), handle->cert_, issuer);
}
void X509Certificate::CreateX509CertificateClass(
const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
CHECK_EQ(args.Length(), 1);
CHECK(args[0]->IsFunction());
Local<Value> ctor;
if (!GetConstructorTemplate(env)->GetFunction(env->context()).ToLocal(&ctor))
return;
Local<Value> ret;
if (!args[0]
.As<Function>()
->Call(env->context(), Undefined(env->isolate()), 1, &ctor)
.ToLocal(&ret)) {
return;
}
Local<Array> constructors = ret.As<Array>();
Local<Value> internal_ctor;
if (!constructors->Get(env->context(), 1).ToLocal(&internal_ctor)) return;
CHECK(env->crypto_internal_x509_certificate_constructor().IsEmpty());
env->set_crypto_internal_x509_certificate_constructor(
internal_ctor.As<Function>());
args.GetReturnValue().Set(constructors);
}
void X509Certificate::IsX509Certificate(
const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
CHECK_EQ(args.Length(), 1);
args.GetReturnValue().Set(HasInstance(env, args[0]));