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src: deduplicate X509 getter implementations
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Reorder arguments of internal helper functions such that their order is
consistent across X509 property getters. Add ReturnPropertyThroughBIO()
and ReturnProperty(). Use these new helpers to deduplicate code across
various X509 property getters.

PR-URL: #48563
Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>
Reviewed-By: Alba Mendez <me@alba.sh>
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@tniessen
tniessen authored Jul 3, 2023
1 parent 5ff46db commit 22da091
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Showing 3 changed files with 53 additions and 100 deletions.
46 changes: 19 additions & 27 deletions src/crypto/crypto_common.cc
View file
Original file line number Diff line number Diff line change
Expand Up @@ -492,7 +492,7 @@ MaybeLocal<Value> GetModulusString(
}
} // namespace

MaybeLocal<Object> GetRawDERCertificate(Environment* env, X509* cert) {
MaybeLocal<Value> GetRawDERCertificate(Environment* env, X509* cert) {
int size = i2d_X509(cert, nullptr);

std::unique_ptr<BackingStore> bs;
Expand Down Expand Up @@ -872,10 +872,9 @@ bool SafeX509InfoAccessPrint(const BIOPointer& out, X509_EXTENSION* ext) {
return ok;
}

v8::MaybeLocal<v8::Value> GetSubjectAltNameString(
Environment* env,
const BIOPointer& bio,
X509* cert) {
v8::MaybeLocal<v8::Value> GetSubjectAltNameString(Environment* env,
X509* cert,
const BIOPointer& bio) {
int index = X509_get_ext_by_NID(cert, NID_subject_alt_name, -1);
if (index < 0)
return Undefined(env->isolate());
Expand All @@ -891,10 +890,9 @@ v8::MaybeLocal<v8::Value> GetSubjectAltNameString(
return ToV8Value(env, bio);
}

v8::MaybeLocal<v8::Value> GetInfoAccessString(
Environment* env,
const BIOPointer& bio,
X509* cert) {
v8::MaybeLocal<v8::Value> GetInfoAccessString(Environment* env,
X509* cert,
const BIOPointer& bio) {
int index = X509_get_ext_by_NID(cert, NID_info_access, -1);
if (index < 0)
return Undefined(env->isolate());
Expand All @@ -910,10 +908,9 @@ v8::MaybeLocal<v8::Value> GetInfoAccessString(
return ToV8Value(env, bio);
}

MaybeLocal<Value> GetIssuerString(
Environment* env,
const BIOPointer& bio,
X509* cert) {
MaybeLocal<Value> GetIssuerString(Environment* env,
X509* cert,
const BIOPointer& bio) {
X509_NAME* issuer_name = X509_get_issuer_name(cert);
if (X509_NAME_print_ex(
bio.get(),
Expand All @@ -927,10 +924,9 @@ MaybeLocal<Value> GetIssuerString(
return ToV8Value(env, bio);
}

MaybeLocal<Value> GetSubject(
Environment* env,
const BIOPointer& bio,
X509* cert) {
MaybeLocal<Value> GetSubject(Environment* env,
X509* cert,
const BIOPointer& bio) {
if (X509_NAME_print_ex(
bio.get(),
X509_get_subject_name(cert),
Expand Down Expand Up @@ -1283,11 +1279,11 @@ MaybeLocal<Object> X509ToObject(
!Set<Value>(context,
info,
env->subjectaltname_string(),
GetSubjectAltNameString(env, bio, cert)) ||
GetSubjectAltNameString(env, cert, bio)) ||
!Set<Value>(context,
info,
env->infoaccess_string(),
GetInfoAccessString(env, bio, cert)) ||
GetInfoAccessString(env, cert, bio)) ||
!Set<Boolean>(context, info, env->ca_string(), is_ca)) {
return MaybeLocal<Object>();
}
Expand Down Expand Up @@ -1390,18 +1386,14 @@ MaybeLocal<Object> X509ToObject(
info,
env->fingerprint512_string(),
GetFingerprintDigest(env, EVP_sha512(), cert)) ||
!Set<Value>(context,
info,
env->ext_key_usage_string(),
GetKeyUsage(env, cert)) ||
!Set<Value>(
context, info, env->ext_key_usage_string(), GetKeyUsage(env, cert)) ||
!Set<Value>(context,
info,
env->serial_number_string(),
GetSerialNumber(env, cert)) ||
!Set<Object>(context,
info,
env->raw_string(),
GetRawDERCertificate(env, cert))) {
!Set<Value>(
context, info, env->raw_string(), GetRawDERCertificate(env, cert))) {
return MaybeLocal<Object>();
}

Expand Down
30 changes: 13 additions & 17 deletions src/crypto/crypto_common.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -118,30 +118,26 @@ v8::MaybeLocal<v8::Value> GetCurrentCipherVersion(Environment* env,

v8::MaybeLocal<v8::Value> GetSerialNumber(Environment* env, X509* cert);

v8::MaybeLocal<v8::Object> GetRawDERCertificate(Environment* env, X509* cert);
v8::MaybeLocal<v8::Value> GetRawDERCertificate(Environment* env, X509* cert);

v8::Local<v8::Value> ToV8Value(Environment* env, const BIOPointer& bio);
bool SafeX509SubjectAltNamePrint(const BIOPointer& out, X509_EXTENSION* ext);

v8::MaybeLocal<v8::Value> GetSubject(
Environment* env,
const BIOPointer& bio,
X509* cert);
v8::MaybeLocal<v8::Value> GetSubject(Environment* env,
X509* cert,
const BIOPointer& bio);

v8::MaybeLocal<v8::Value> GetIssuerString(
Environment* env,
const BIOPointer& bio,
X509* cert);
v8::MaybeLocal<v8::Value> GetIssuerString(Environment* env,
X509* cert,
const BIOPointer& bio);

v8::MaybeLocal<v8::Value> GetSubjectAltNameString(
Environment* env,
const BIOPointer& bio,
X509* cert);
v8::MaybeLocal<v8::Value> GetSubjectAltNameString(Environment* env,
X509* cert,
const BIOPointer& bio);

v8::MaybeLocal<v8::Value> GetInfoAccessString(
Environment* env,
const BIOPointer& bio,
X509* cert);
v8::MaybeLocal<v8::Value> GetInfoAccessString(Environment* env,
X509* cert,
const BIOPointer& bio);

} // namespace crypto
} // namespace node
Expand Down
77 changes: 21 additions & 56 deletions src/crypto/crypto_x509.cc
View file
Original file line number Diff line number Diff line change
Expand Up @@ -203,97 +203,62 @@ void X509Certificate::Parse(const FunctionCallbackInfo<Value>& args) {
args.GetReturnValue().Set(cert);
}

void X509Certificate::Subject(const FunctionCallbackInfo<Value>& args) {
template <MaybeLocal<Value> Property(
Environment* env, X509* cert, const BIOPointer& bio)>
static void ReturnPropertyThroughBIO(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.Holder());
BIOPointer bio(BIO_new(BIO_s_mem()));
CHECK(bio);
Local<Value> ret;
if (GetSubject(env, bio, cert->get()).ToLocal(&ret))
if (Property(env, cert->get(), bio).ToLocal(&ret))
args.GetReturnValue().Set(ret);
}

void X509Certificate::Subject(const FunctionCallbackInfo<Value>& args) {
ReturnPropertyThroughBIO<GetSubject>(args);
}

void X509Certificate::Issuer(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.Holder());
BIOPointer bio(BIO_new(BIO_s_mem()));
CHECK(bio);
Local<Value> ret;
if (GetIssuerString(env, bio, cert->get()).ToLocal(&ret))
args.GetReturnValue().Set(ret);
ReturnPropertyThroughBIO<GetIssuerString>(args);
}

void X509Certificate::SubjectAltName(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.Holder());
BIOPointer bio(BIO_new(BIO_s_mem()));
CHECK(bio);
Local<Value> ret;
if (GetSubjectAltNameString(env, bio, cert->get()).ToLocal(&ret))
args.GetReturnValue().Set(ret);
ReturnPropertyThroughBIO<GetSubjectAltNameString>(args);
}

void X509Certificate::InfoAccess(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.Holder());
BIOPointer bio(BIO_new(BIO_s_mem()));
CHECK(bio);
Local<Value> ret;
if (GetInfoAccessString(env, bio, cert->get()).ToLocal(&ret))
args.GetReturnValue().Set(ret);
ReturnPropertyThroughBIO<GetInfoAccessString>(args);
}

void X509Certificate::ValidFrom(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.Holder());
BIOPointer bio(BIO_new(BIO_s_mem()));
CHECK(bio);
Local<Value> ret;
if (GetValidFrom(env, cert->get(), bio).ToLocal(&ret))
args.GetReturnValue().Set(ret);
ReturnPropertyThroughBIO<GetValidFrom>(args);
}

void X509Certificate::ValidTo(const FunctionCallbackInfo<Value>& args) {
ReturnPropertyThroughBIO<GetValidTo>(args);
}

template <MaybeLocal<Value> Property(Environment* env, X509* cert)>
static void ReturnProperty(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.Holder());
BIOPointer bio(BIO_new(BIO_s_mem()));
CHECK(bio);
Local<Value> ret;
if (GetValidTo(env, cert->get(), bio).ToLocal(&ret))
args.GetReturnValue().Set(ret);
if (Property(env, cert->get()).ToLocal(&ret)) args.GetReturnValue().Set(ret);
}

void X509Certificate::KeyUsage(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.Holder());
Local<Value> ret;
if (GetKeyUsage(env, cert->get()).ToLocal(&ret))
args.GetReturnValue().Set(ret);
ReturnProperty<GetKeyUsage>(args);
}

void X509Certificate::SerialNumber(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.Holder());
Local<Value> ret;
if (GetSerialNumber(env, cert->get()).ToLocal(&ret))
args.GetReturnValue().Set(ret);
ReturnProperty<GetSerialNumber>(args);
}

void X509Certificate::Raw(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
X509Certificate* cert;
ASSIGN_OR_RETURN_UNWRAP(&cert, args.Holder());
Local<Value> ret;
if (GetRawDERCertificate(env, cert->get()).ToLocal(&ret))
args.GetReturnValue().Set(ret);
ReturnProperty<GetRawDERCertificate>(args);
}

void X509Certificate::PublicKey(const FunctionCallbackInfo<Value>& args) {
Expand Down

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