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crypto_context.cc
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crypto_context.cc
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#include "crypto/crypto_context.h"
#include "crypto/crypto_bio.h"
#include "crypto/crypto_common.h"
#include "crypto/crypto_util.h"
#include "base_object-inl.h"
#include "env-inl.h"
#include "memory_tracker-inl.h"
#include "node.h"
#include "node_buffer.h"
#include "node_options.h"
#include "util.h"
#include "v8.h"
#include <openssl/x509.h>
#include <openssl/pkcs12.h>
#include <openssl/rand.h>
#ifndef OPENSSL_NO_ENGINE
#include <openssl/engine.h>
#endif // !OPENSSL_NO_ENGINE
namespace node {
using v8::Array;
using v8::ArrayBufferView;
using v8::Context;
using v8::DontDelete;
using v8::Exception;
using v8::External;
using v8::FunctionCallbackInfo;
using v8::FunctionTemplate;
using v8::HandleScope;
using v8::Int32;
using v8::Integer;
using v8::Local;
using v8::Object;
using v8::PropertyAttribute;
using v8::ReadOnly;
using v8::Signature;
using v8::String;
using v8::Value;
namespace crypto {
static const char* const root_certs[] = {
#include "node_root_certs.h" // NOLINT(build/include_order)
};
static const char system_cert_path[] = NODE_OPENSSL_SYSTEM_CERT_PATH;
static X509_STORE* root_cert_store;
static bool extra_root_certs_loaded = false;
// Takes a string or buffer and loads it into a BIO.
// Caller responsible for BIO_free_all-ing the returned object.
BIOPointer LoadBIO(Environment* env, Local<Value> v) {
HandleScope scope(env->isolate());
if (v->IsString()) {
Utf8Value s(env->isolate(), v);
return NodeBIO::NewFixed(*s, s.length());
}
if (v->IsArrayBufferView()) {
ArrayBufferViewContents<char> buf(v.As<ArrayBufferView>());
return NodeBIO::NewFixed(buf.data(), buf.length());
}
return nullptr;
}
namespace {
int SSL_CTX_use_certificate_chain(SSL_CTX* ctx,
X509Pointer&& x,
STACK_OF(X509)* extra_certs,
X509Pointer* cert,
X509Pointer* issuer_) {
CHECK(!*issuer_);
CHECK(!*cert);
X509* issuer = nullptr;
int ret = SSL_CTX_use_certificate(ctx, x.get());
if (ret) {
// If we could set up our certificate, now proceed to
// the CA certificates.
SSL_CTX_clear_extra_chain_certs(ctx);
for (int i = 0; i < sk_X509_num(extra_certs); i++) {
X509* ca = sk_X509_value(extra_certs, i);
// NOTE: Increments reference count on `ca`
if (!SSL_CTX_add1_chain_cert(ctx, ca)) {
ret = 0;
issuer = nullptr;
break;
}
// Note that we must not free r if it was successfully
// added to the chain (while we must free the main
// certificate, since its reference count is increased
// by SSL_CTX_use_certificate).
// Find issuer
if (issuer != nullptr || X509_check_issued(ca, x.get()) != X509_V_OK)
continue;
issuer = ca;
}
}
// Try getting issuer from a cert store
if (ret) {
if (issuer == nullptr) {
ret = SSL_CTX_get_issuer(ctx, x.get(), &issuer);
ret = ret < 0 ? 0 : 1;
// NOTE: get_cert_store doesn't increment reference count,
// no need to free `store`
} else {
// Increment issuer reference count
issuer = X509_dup(issuer);
if (issuer == nullptr) {
ret = 0;
}
}
}
issuer_->reset(issuer);
if (ret && x != nullptr) {
cert->reset(X509_dup(x.get()));
if (!*cert)
ret = 0;
}
return ret;
}
// Read a file that contains our certificate in "PEM" format,
// possibly followed by a sequence of CA certificates that should be
// sent to the peer in the Certificate message.
//
// Taken from OpenSSL - edited for style.
int SSL_CTX_use_certificate_chain(SSL_CTX* ctx,
BIOPointer&& in,
X509Pointer* cert,
X509Pointer* issuer) {
// Just to ensure that `ERR_peek_last_error` below will return only errors
// that we are interested in
ERR_clear_error();
X509Pointer x(
PEM_read_bio_X509_AUX(in.get(), nullptr, NoPasswordCallback, nullptr));
if (!x)
return 0;
unsigned long err = 0; // NOLINT(runtime/int)
StackOfX509 extra_certs(sk_X509_new_null());
if (!extra_certs)
return 0;
while (X509Pointer extra {PEM_read_bio_X509(in.get(),
nullptr,
NoPasswordCallback,
nullptr)}) {
if (sk_X509_push(extra_certs.get(), extra.get())) {
extra.release();
continue;
}
return 0;
}
// When the while loop ends, it's usually just EOF.
err = ERR_peek_last_error();
if (ERR_GET_LIB(err) == ERR_LIB_PEM &&
ERR_GET_REASON(err) == PEM_R_NO_START_LINE) {
ERR_clear_error();
} else {
// some real error
return 0;
}
return SSL_CTX_use_certificate_chain(ctx,
std::move(x),
extra_certs.get(),
cert,
issuer);
}
} // namespace
X509_STORE* NewRootCertStore() {
static std::vector<X509*> root_certs_vector;
static Mutex root_certs_vector_mutex;
Mutex::ScopedLock lock(root_certs_vector_mutex);
if (root_certs_vector.empty() &&
per_process::cli_options->ssl_openssl_cert_store == false) {
for (size_t i = 0; i < arraysize(root_certs); i++) {
X509* x509 =
PEM_read_bio_X509(NodeBIO::NewFixed(root_certs[i],
strlen(root_certs[i])).get(),
nullptr, // no re-use of X509 structure
NoPasswordCallback,
nullptr); // no callback data
// Parse errors from the built-in roots are fatal.
CHECK_NOT_NULL(x509);
root_certs_vector.push_back(x509);
}
}
X509_STORE* store = X509_STORE_new();
if (*system_cert_path != '\0') {
ERR_set_mark();
X509_STORE_load_locations(store, system_cert_path, nullptr);
ERR_pop_to_mark();
}
Mutex::ScopedLock cli_lock(node::per_process::cli_options_mutex);
if (per_process::cli_options->ssl_openssl_cert_store) {
X509_STORE_set_default_paths(store);
} else {
for (X509* cert : root_certs_vector) {
X509_up_ref(cert);
X509_STORE_add_cert(store, cert);
}
}
return store;
}
void GetRootCertificates(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
Local<Value> result[arraysize(root_certs)];
for (size_t i = 0; i < arraysize(root_certs); i++) {
if (!String::NewFromOneByte(
env->isolate(),
reinterpret_cast<const uint8_t*>(root_certs[i]))
.ToLocal(&result[i])) {
return;
}
}
args.GetReturnValue().Set(
Array::New(env->isolate(), result, arraysize(root_certs)));
}
bool SecureContext::HasInstance(Environment* env, const Local<Value>& value) {
return GetConstructorTemplate(env)->HasInstance(value);
}
Local<FunctionTemplate> SecureContext::GetConstructorTemplate(
Environment* env) {
Local<FunctionTemplate> tmpl = env->secure_context_constructor_template();
if (tmpl.IsEmpty()) {
tmpl = env->NewFunctionTemplate(New);
tmpl->InstanceTemplate()->SetInternalFieldCount(
SecureContext::kInternalFieldCount);
tmpl->Inherit(BaseObject::GetConstructorTemplate(env));
tmpl->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "SecureContext"));
env->SetProtoMethod(tmpl, "init", Init);
env->SetProtoMethod(tmpl, "setKey", SetKey);
env->SetProtoMethod(tmpl, "setCert", SetCert);
env->SetProtoMethod(tmpl, "addCACert", AddCACert);
env->SetProtoMethod(tmpl, "addCRL", AddCRL);
env->SetProtoMethod(tmpl, "addRootCerts", AddRootCerts);
env->SetProtoMethod(tmpl, "setCipherSuites", SetCipherSuites);
env->SetProtoMethod(tmpl, "setCiphers", SetCiphers);
env->SetProtoMethod(tmpl, "setSigalgs", SetSigalgs);
env->SetProtoMethod(tmpl, "setECDHCurve", SetECDHCurve);
env->SetProtoMethod(tmpl, "setDHParam", SetDHParam);
env->SetProtoMethod(tmpl, "setMaxProto", SetMaxProto);
env->SetProtoMethod(tmpl, "setMinProto", SetMinProto);
env->SetProtoMethod(tmpl, "getMaxProto", GetMaxProto);
env->SetProtoMethod(tmpl, "getMinProto", GetMinProto);
env->SetProtoMethod(tmpl, "setOptions", SetOptions);
env->SetProtoMethod(tmpl, "setSessionIdContext", SetSessionIdContext);
env->SetProtoMethod(tmpl, "setSessionTimeout", SetSessionTimeout);
env->SetProtoMethod(tmpl, "close", Close);
env->SetProtoMethod(tmpl, "loadPKCS12", LoadPKCS12);
env->SetProtoMethod(tmpl, "setTicketKeys", SetTicketKeys);
env->SetProtoMethod(tmpl, "setFreeListLength", SetFreeListLength);
env->SetProtoMethod(tmpl, "enableTicketKeyCallback",
EnableTicketKeyCallback);
env->SetProtoMethodNoSideEffect(tmpl, "getTicketKeys", GetTicketKeys);
env->SetProtoMethodNoSideEffect(tmpl, "getCertificate",
GetCertificate<true>);
env->SetProtoMethodNoSideEffect(tmpl, "getIssuer",
GetCertificate<false>);
#ifndef OPENSSL_NO_ENGINE
env->SetProtoMethod(tmpl, "setEngineKey", SetEngineKey);
env->SetProtoMethod(tmpl, "setClientCertEngine", SetClientCertEngine);
#endif // !OPENSSL_NO_ENGINE
#define SET_INTEGER_CONSTANTS(name, value) \
tmpl->Set(FIXED_ONE_BYTE_STRING(env->isolate(), name), \
Integer::NewFromUnsigned(env->isolate(), value));
SET_INTEGER_CONSTANTS("kTicketKeyReturnIndex", kTicketKeyReturnIndex);
SET_INTEGER_CONSTANTS("kTicketKeyHMACIndex", kTicketKeyHMACIndex);
SET_INTEGER_CONSTANTS("kTicketKeyAESIndex", kTicketKeyAESIndex);
SET_INTEGER_CONSTANTS("kTicketKeyNameIndex", kTicketKeyNameIndex);
SET_INTEGER_CONSTANTS("kTicketKeyIVIndex", kTicketKeyIVIndex);
#undef SET_INTEGER_CONSTANTS
Local<FunctionTemplate> ctx_getter_templ =
FunctionTemplate::New(env->isolate(),
CtxGetter,
Local<Value>(),
Signature::New(env->isolate(), tmpl));
tmpl->PrototypeTemplate()->SetAccessorProperty(
FIXED_ONE_BYTE_STRING(env->isolate(), "_external"),
ctx_getter_templ,
Local<FunctionTemplate>(),
static_cast<PropertyAttribute>(ReadOnly | DontDelete));
env->set_secure_context_constructor_template(tmpl);
}
return tmpl;
}
void SecureContext::Initialize(Environment* env, Local<Object> target) {
env->SetConstructorFunction(
target,
"SecureContext",
GetConstructorTemplate(env),
Environment::SetConstructorFunctionFlag::NONE);
env->SetMethodNoSideEffect(target, "getRootCertificates",
GetRootCertificates);
// Exposed for testing purposes only.
env->SetMethodNoSideEffect(target, "isExtraRootCertsFileLoaded",
IsExtraRootCertsFileLoaded);
}
void SecureContext::RegisterExternalReferences(
ExternalReferenceRegistry* registry) {
registry->Register(New);
registry->Register(Init);
registry->Register(SetKey);
registry->Register(SetCert);
registry->Register(AddCACert);
registry->Register(AddCRL);
registry->Register(AddRootCerts);
registry->Register(SetCipherSuites);
registry->Register(SetCiphers);
registry->Register(SetSigalgs);
registry->Register(SetECDHCurve);
registry->Register(SetDHParam);
registry->Register(SetMaxProto);
registry->Register(SetMinProto);
registry->Register(GetMaxProto);
registry->Register(GetMinProto);
registry->Register(SetOptions);
registry->Register(SetSessionIdContext);
registry->Register(SetSessionTimeout);
registry->Register(Close);
registry->Register(LoadPKCS12);
registry->Register(SetTicketKeys);
registry->Register(SetFreeListLength);
registry->Register(EnableTicketKeyCallback);
registry->Register(GetTicketKeys);
registry->Register(GetCertificate<true>);
registry->Register(GetCertificate<false>);
#ifndef OPENSSL_NO_ENGINE
registry->Register(SetEngineKey);
registry->Register(SetClientCertEngine);
#endif // !OPENSSL_NO_ENGINE
registry->Register(CtxGetter);
registry->Register(GetRootCertificates);
registry->Register(IsExtraRootCertsFileLoaded);
}
SecureContext* SecureContext::Create(Environment* env) {
Local<Object> obj;
if (!GetConstructorTemplate(env)
->InstanceTemplate()
->NewInstance(env->context()).ToLocal(&obj)) {
return nullptr;
}
return new SecureContext(env, obj);
}
SecureContext::SecureContext(Environment* env, Local<Object> wrap)
: BaseObject(env, wrap) {
MakeWeak();
env->isolate()->AdjustAmountOfExternalAllocatedMemory(kExternalSize);
}
inline void SecureContext::Reset() {
if (ctx_ != nullptr) {
env()->isolate()->AdjustAmountOfExternalAllocatedMemory(-kExternalSize);
}
ctx_.reset();
cert_.reset();
issuer_.reset();
}
SecureContext::~SecureContext() {
Reset();
}
void SecureContext::New(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
new SecureContext(env, args.This());
}
void SecureContext::Init(const FunctionCallbackInfo<Value>& args) {
SecureContext* sc;
ASSIGN_OR_RETURN_UNWRAP(&sc, args.Holder());
Environment* env = sc->env();
CHECK_EQ(args.Length(), 3);
CHECK(args[1]->IsInt32());
CHECK(args[2]->IsInt32());
int min_version = args[1].As<Int32>()->Value();
int max_version = args[2].As<Int32>()->Value();
const SSL_METHOD* method = TLS_method();
if (max_version == 0)
max_version = kMaxSupportedVersion;
if (args[0]->IsString()) {
Utf8Value sslmethod(env->isolate(), args[0]);
// Note that SSLv2 and SSLv3 are disallowed but SSLv23_method and friends
// are still accepted. They are OpenSSL's way of saying that all known
// protocols below TLS 1.3 are supported unless explicitly disabled (which
// we do below for SSLv2 and SSLv3.)
if (sslmethod == "SSLv2_method" ||
sslmethod == "SSLv2_server_method" ||
sslmethod == "SSLv2_client_method") {
THROW_ERR_TLS_INVALID_PROTOCOL_METHOD(env, "SSLv2 methods disabled");
return;
} else if (sslmethod == "SSLv3_method" ||
sslmethod == "SSLv3_server_method" ||
sslmethod == "SSLv3_client_method") {
THROW_ERR_TLS_INVALID_PROTOCOL_METHOD(env, "SSLv3 methods disabled");
return;
} else if (sslmethod == "SSLv23_method") {
max_version = TLS1_2_VERSION;
} else if (sslmethod == "SSLv23_server_method") {
max_version = TLS1_2_VERSION;
method = TLS_server_method();
} else if (sslmethod == "SSLv23_client_method") {
max_version = TLS1_2_VERSION;
method = TLS_client_method();
} else if (sslmethod == "TLS_method") {
min_version = 0;
max_version = kMaxSupportedVersion;
} else if (sslmethod == "TLS_server_method") {
min_version = 0;
max_version = kMaxSupportedVersion;
method = TLS_server_method();
} else if (sslmethod == "TLS_client_method") {
min_version = 0;
max_version = kMaxSupportedVersion;
method = TLS_client_method();
} else if (sslmethod == "TLSv1_method") {
min_version = TLS1_VERSION;
max_version = TLS1_VERSION;
} else if (sslmethod == "TLSv1_server_method") {
min_version = TLS1_VERSION;
max_version = TLS1_VERSION;
method = TLS_server_method();
} else if (sslmethod == "TLSv1_client_method") {
min_version = TLS1_VERSION;
max_version = TLS1_VERSION;
method = TLS_client_method();
} else if (sslmethod == "TLSv1_1_method") {
min_version = TLS1_1_VERSION;
max_version = TLS1_1_VERSION;
} else if (sslmethod == "TLSv1_1_server_method") {
min_version = TLS1_1_VERSION;
max_version = TLS1_1_VERSION;
method = TLS_server_method();
} else if (sslmethod == "TLSv1_1_client_method") {
min_version = TLS1_1_VERSION;
max_version = TLS1_1_VERSION;
method = TLS_client_method();
} else if (sslmethod == "TLSv1_2_method") {
min_version = TLS1_2_VERSION;
max_version = TLS1_2_VERSION;
} else if (sslmethod == "TLSv1_2_server_method") {
min_version = TLS1_2_VERSION;
max_version = TLS1_2_VERSION;
method = TLS_server_method();
} else if (sslmethod == "TLSv1_2_client_method") {
min_version = TLS1_2_VERSION;
max_version = TLS1_2_VERSION;
method = TLS_client_method();
} else {
const std::string msg("Unknown method: ");
THROW_ERR_TLS_INVALID_PROTOCOL_METHOD(env, (msg + * sslmethod).c_str());
return;
}
}
sc->ctx_.reset(SSL_CTX_new(method));
SSL_CTX_set_app_data(sc->ctx_.get(), sc);
// Disable SSLv2 in the case when method == TLS_method() and the
// cipher list contains SSLv2 ciphers (not the default, should be rare.)
// The bundled OpenSSL doesn't have SSLv2 support but the system OpenSSL may.
// SSLv3 is disabled because it's susceptible to downgrade attacks (POODLE.)
SSL_CTX_set_options(sc->ctx_.get(), SSL_OP_NO_SSLv2);
SSL_CTX_set_options(sc->ctx_.get(), SSL_OP_NO_SSLv3);
#if OPENSSL_VERSION_MAJOR >= 3
SSL_CTX_set_options(sc->ctx_.get(), SSL_OP_ALLOW_CLIENT_RENEGOTIATION);
#endif
// Enable automatic cert chaining. This is enabled by default in OpenSSL, but
// disabled by default in BoringSSL. Enable it explicitly to make the
// behavior match when Node is built with BoringSSL.
SSL_CTX_clear_mode(sc->ctx_.get(), SSL_MODE_NO_AUTO_CHAIN);
// SSL session cache configuration
SSL_CTX_set_session_cache_mode(sc->ctx_.get(),
SSL_SESS_CACHE_CLIENT |
SSL_SESS_CACHE_SERVER |
SSL_SESS_CACHE_NO_INTERNAL |
SSL_SESS_CACHE_NO_AUTO_CLEAR);
SSL_CTX_set_min_proto_version(sc->ctx_.get(), min_version);
SSL_CTX_set_max_proto_version(sc->ctx_.get(), max_version);
// OpenSSL 1.1.0 changed the ticket key size, but the OpenSSL 1.0.x size was
// exposed in the public API. To retain compatibility, install a callback
// which restores the old algorithm.
if (RAND_bytes(sc->ticket_key_name_, sizeof(sc->ticket_key_name_)) <= 0 ||
RAND_bytes(sc->ticket_key_hmac_, sizeof(sc->ticket_key_hmac_)) <= 0 ||
RAND_bytes(sc->ticket_key_aes_, sizeof(sc->ticket_key_aes_)) <= 0) {
return THROW_ERR_CRYPTO_OPERATION_FAILED(
env, "Error generating ticket keys");
}
SSL_CTX_set_tlsext_ticket_key_cb(sc->ctx_.get(), TicketCompatibilityCallback);
}
SSLPointer SecureContext::CreateSSL() {
return SSLPointer(SSL_new(ctx_.get()));
}
void SecureContext::SetNewSessionCallback(NewSessionCb cb) {
SSL_CTX_sess_set_new_cb(ctx_.get(), cb);
}
void SecureContext::SetGetSessionCallback(GetSessionCb cb) {
SSL_CTX_sess_set_get_cb(ctx_.get(), cb);
}
void SecureContext::SetSelectSNIContextCallback(SelectSNIContextCb cb) {
SSL_CTX_set_tlsext_servername_callback(ctx_.get(), cb);
}
void SecureContext::SetKeylogCallback(KeylogCb cb) {
SSL_CTX_set_keylog_callback(ctx_.get(), cb);
}
void SecureContext::SetKey(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
SecureContext* sc;
ASSIGN_OR_RETURN_UNWRAP(&sc, args.Holder());
CHECK_GE(args.Length(), 1); // Private key argument is mandatory
BIOPointer bio(LoadBIO(env, args[0]));
if (!bio)
return;
ByteSource passphrase;
if (args[1]->IsString())
passphrase = ByteSource::FromString(env, args[1].As<String>());
// This redirection is necessary because the PasswordCallback expects a
// pointer to a pointer to the passphrase ByteSource to allow passing in
// const ByteSources.
const ByteSource* pass_ptr = &passphrase;
EVPKeyPointer key(
PEM_read_bio_PrivateKey(bio.get(),
nullptr,
PasswordCallback,
&pass_ptr));
if (!key)
return ThrowCryptoError(env, ERR_get_error(), "PEM_read_bio_PrivateKey");
if (!SSL_CTX_use_PrivateKey(sc->ctx_.get(), key.get()))
return ThrowCryptoError(env, ERR_get_error(), "SSL_CTX_use_PrivateKey");
}
void SecureContext::SetSigalgs(const FunctionCallbackInfo<Value>& args) {
SecureContext* sc;
ASSIGN_OR_RETURN_UNWRAP(&sc, args.Holder());
Environment* env = sc->env();
ClearErrorOnReturn clear_error_on_return;
CHECK_EQ(args.Length(), 1);
CHECK(args[0]->IsString());
const Utf8Value sigalgs(env->isolate(), args[0]);
if (!SSL_CTX_set1_sigalgs_list(sc->ctx_.get(), *sigalgs))
return ThrowCryptoError(env, ERR_get_error());
}
#ifndef OPENSSL_NO_ENGINE
void SecureContext::SetEngineKey(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
SecureContext* sc;
ASSIGN_OR_RETURN_UNWRAP(&sc, args.Holder());
CHECK_EQ(args.Length(), 2);
CryptoErrorStore errors;
Utf8Value engine_id(env->isolate(), args[1]);
EnginePointer engine = LoadEngineById(*engine_id, &errors);
if (!engine) {
Local<Value> exception;
if (errors.ToException(env).ToLocal(&exception))
env->isolate()->ThrowException(exception);
return;
}
if (!ENGINE_init(engine.get())) {
return THROW_ERR_CRYPTO_OPERATION_FAILED(
env, "Failure to initialize engine");
}
engine.finish_on_exit = true;
Utf8Value key_name(env->isolate(), args[0]);
EVPKeyPointer key(ENGINE_load_private_key(engine.get(), *key_name,
nullptr, nullptr));
if (!key)
return ThrowCryptoError(env, ERR_get_error(), "ENGINE_load_private_key");
if (!SSL_CTX_use_PrivateKey(sc->ctx_.get(), key.get()))
return ThrowCryptoError(env, ERR_get_error(), "SSL_CTX_use_PrivateKey");
sc->private_key_engine_ = std::move(engine);
}
#endif // !OPENSSL_NO_ENGINE
void SecureContext::SetCert(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
SecureContext* sc;
ASSIGN_OR_RETURN_UNWRAP(&sc, args.Holder());
CHECK_GE(args.Length(), 1); // Certificate argument is mandator
BIOPointer bio(LoadBIO(env, args[0]));
if (!bio)
return;
sc->cert_.reset();
sc->issuer_.reset();
if (!SSL_CTX_use_certificate_chain(
sc->ctx_.get(),
std::move(bio),
&sc->cert_,
&sc->issuer_)) {
return ThrowCryptoError(
env,
ERR_get_error(),
"SSL_CTX_use_certificate_chain");
}
}
void SecureContext::AddCACert(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
SecureContext* sc;
ASSIGN_OR_RETURN_UNWRAP(&sc, args.Holder());
ClearErrorOnReturn clear_error_on_return;
CHECK_GE(args.Length(), 1); // CA certificate argument is mandatory
BIOPointer bio(LoadBIO(env, args[0]));
if (!bio)
return;
X509_STORE* cert_store = SSL_CTX_get_cert_store(sc->ctx_.get());
while (X509* x509 = PEM_read_bio_X509_AUX(
bio.get(), nullptr, NoPasswordCallback, nullptr)) {
if (cert_store == root_cert_store) {
cert_store = NewRootCertStore();
SSL_CTX_set_cert_store(sc->ctx_.get(), cert_store);
}
X509_STORE_add_cert(cert_store, x509);
SSL_CTX_add_client_CA(sc->ctx_.get(), x509);
X509_free(x509);
}
}
void SecureContext::AddCRL(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
SecureContext* sc;
ASSIGN_OR_RETURN_UNWRAP(&sc, args.Holder());
CHECK_GE(args.Length(), 1); // CRL argument is mandatory
ClearErrorOnReturn clear_error_on_return;
BIOPointer bio(LoadBIO(env, args[0]));
if (!bio)
return;
DeleteFnPtr<X509_CRL, X509_CRL_free> crl(
PEM_read_bio_X509_CRL(bio.get(), nullptr, NoPasswordCallback, nullptr));
if (!crl)
return THROW_ERR_CRYPTO_OPERATION_FAILED(env, "Failed to parse CRL");
X509_STORE* cert_store = SSL_CTX_get_cert_store(sc->ctx_.get());
if (cert_store == root_cert_store) {
cert_store = NewRootCertStore();
SSL_CTX_set_cert_store(sc->ctx_.get(), cert_store);
}
X509_STORE_add_crl(cert_store, crl.get());
X509_STORE_set_flags(cert_store,
X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL);
}
void SecureContext::AddRootCerts(const FunctionCallbackInfo<Value>& args) {
SecureContext* sc;
ASSIGN_OR_RETURN_UNWRAP(&sc, args.Holder());
ClearErrorOnReturn clear_error_on_return;
if (root_cert_store == nullptr) {
root_cert_store = NewRootCertStore();
}
// Increment reference count so global store is not deleted along with CTX.
X509_STORE_up_ref(root_cert_store);
SSL_CTX_set_cert_store(sc->ctx_.get(), root_cert_store);
}
void SecureContext::SetCipherSuites(const FunctionCallbackInfo<Value>& args) {
// BoringSSL doesn't allow API config of TLS1.3 cipher suites.
#ifndef OPENSSL_IS_BORINGSSL
SecureContext* sc;
ASSIGN_OR_RETURN_UNWRAP(&sc, args.Holder());
Environment* env = sc->env();
ClearErrorOnReturn clear_error_on_return;
CHECK_EQ(args.Length(), 1);
CHECK(args[0]->IsString());
const Utf8Value ciphers(env->isolate(), args[0]);
if (!SSL_CTX_set_ciphersuites(sc->ctx_.get(), *ciphers))
return ThrowCryptoError(env, ERR_get_error(), "Failed to set ciphers");
#endif
}
void SecureContext::SetCiphers(const FunctionCallbackInfo<Value>& args) {
SecureContext* sc;
ASSIGN_OR_RETURN_UNWRAP(&sc, args.Holder());
Environment* env = sc->env();
ClearErrorOnReturn clear_error_on_return;
CHECK_EQ(args.Length(), 1);
CHECK(args[0]->IsString());
Utf8Value ciphers(env->isolate(), args[0]);
if (!SSL_CTX_set_cipher_list(sc->ctx_.get(), *ciphers)) {
unsigned long err = ERR_get_error(); // NOLINT(runtime/int)
if (strlen(*ciphers) == 0 && ERR_GET_REASON(err) == SSL_R_NO_CIPHER_MATCH) {
// TLS1.2 ciphers were deliberately cleared, so don't consider
// SSL_R_NO_CIPHER_MATCH to be an error (this is how _set_cipher_suites()
// works). If the user actually sets a value (like "no-such-cipher"), then
// that's actually an error.
return;
}
return ThrowCryptoError(env, err, "Failed to set ciphers");
}
}
void SecureContext::SetECDHCurve(const FunctionCallbackInfo<Value>& args) {
SecureContext* sc;
ASSIGN_OR_RETURN_UNWRAP(&sc, args.Holder());
Environment* env = sc->env();
CHECK_GE(args.Length(), 1); // ECDH curve name argument is mandatory
CHECK(args[0]->IsString());
Utf8Value curve(env->isolate(), args[0]);
if (strcmp(*curve, "auto") != 0 &&
!SSL_CTX_set1_curves_list(sc->ctx_.get(), *curve)) {
return THROW_ERR_CRYPTO_OPERATION_FAILED(env, "Failed to set ECDH curve");
}
}
void SecureContext::SetDHParam(const FunctionCallbackInfo<Value>& args) {
SecureContext* sc;
ASSIGN_OR_RETURN_UNWRAP(&sc, args.This());
Environment* env = sc->env();
ClearErrorOnReturn clear_error_on_return;
CHECK_GE(args.Length(), 1); // DH argument is mandatory
DHPointer dh;
{
BIOPointer bio(LoadBIO(env, args[0]));
if (!bio)
return;
dh.reset(PEM_read_bio_DHparams(bio.get(), nullptr, nullptr, nullptr));
}
// Invalid dhparam is silently discarded and DHE is no longer used.
if (!dh)
return;
const BIGNUM* p;
DH_get0_pqg(dh.get(), &p, nullptr, nullptr);
const int size = BN_num_bits(p);
if (size < 1024) {
return THROW_ERR_INVALID_ARG_VALUE(
env, "DH parameter is less than 1024 bits");
} else if (size < 2048) {
args.GetReturnValue().Set(FIXED_ONE_BYTE_STRING(
env->isolate(), "DH parameter is less than 2048 bits"));
}
SSL_CTX_set_options(sc->ctx_.get(), SSL_OP_SINGLE_DH_USE);
if (!SSL_CTX_set_tmp_dh(sc->ctx_.get(), dh.get())) {
return THROW_ERR_CRYPTO_OPERATION_FAILED(
env, "Error setting temp DH parameter");
}
}
void SecureContext::SetMinProto(const FunctionCallbackInfo<Value>& args) {
SecureContext* sc;
ASSIGN_OR_RETURN_UNWRAP(&sc, args.Holder());
CHECK_EQ(args.Length(), 1);
CHECK(args[0]->IsInt32());
int version = args[0].As<Int32>()->Value();
CHECK(SSL_CTX_set_min_proto_version(sc->ctx_.get(), version));
}
void SecureContext::SetMaxProto(const FunctionCallbackInfo<Value>& args) {
SecureContext* sc;
ASSIGN_OR_RETURN_UNWRAP(&sc, args.Holder());
CHECK_EQ(args.Length(), 1);
CHECK(args[0]->IsInt32());
int version = args[0].As<Int32>()->Value();
CHECK(SSL_CTX_set_max_proto_version(sc->ctx_.get(), version));
}
void SecureContext::GetMinProto(const FunctionCallbackInfo<Value>& args) {
SecureContext* sc;
ASSIGN_OR_RETURN_UNWRAP(&sc, args.Holder());
CHECK_EQ(args.Length(), 0);
long version = // NOLINT(runtime/int)
SSL_CTX_get_min_proto_version(sc->ctx_.get());
args.GetReturnValue().Set(static_cast<uint32_t>(version));
}
void SecureContext::GetMaxProto(const FunctionCallbackInfo<Value>& args) {
SecureContext* sc;
ASSIGN_OR_RETURN_UNWRAP(&sc, args.Holder());
CHECK_EQ(args.Length(), 0);
long version = // NOLINT(runtime/int)
SSL_CTX_get_max_proto_version(sc->ctx_.get());
args.GetReturnValue().Set(static_cast<uint32_t>(version));
}
void SecureContext::SetOptions(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
SecureContext* sc;
ASSIGN_OR_RETURN_UNWRAP(&sc, args.Holder());
CHECK_GE(args.Length(), 1);
CHECK(args[0]->IsNumber());
int64_t val = args[0]->IntegerValue(env->context()).FromMaybe(0);
SSL_CTX_set_options(sc->ctx_.get(),
static_cast<long>(val)); // NOLINT(runtime/int)
}
void SecureContext::SetSessionIdContext(
const FunctionCallbackInfo<Value>& args) {
SecureContext* sc;
ASSIGN_OR_RETURN_UNWRAP(&sc, args.Holder());
Environment* env = sc->env();
CHECK_GE(args.Length(), 1);
CHECK(args[0]->IsString());
const Utf8Value sessionIdContext(env->isolate(), args[0]);
const unsigned char* sid_ctx =
reinterpret_cast<const unsigned char*>(*sessionIdContext);
unsigned int sid_ctx_len = sessionIdContext.length();
if (SSL_CTX_set_session_id_context(sc->ctx_.get(), sid_ctx, sid_ctx_len) == 1)
return;
BUF_MEM* mem;
Local<String> message;
BIOPointer bio(BIO_new(BIO_s_mem()));
if (!bio) {
message = FIXED_ONE_BYTE_STRING(env->isolate(),
"SSL_CTX_set_session_id_context error");
} else {
ERR_print_errors(bio.get());
BIO_get_mem_ptr(bio.get(), &mem);
message = OneByteString(env->isolate(), mem->data, mem->length);
}
env->isolate()->ThrowException(Exception::TypeError(message));
}
void SecureContext::SetSessionTimeout(const FunctionCallbackInfo<Value>& args) {
SecureContext* sc;
ASSIGN_OR_RETURN_UNWRAP(&sc, args.Holder());
CHECK_GE(args.Length(), 1);
CHECK(args[0]->IsInt32());
int32_t sessionTimeout = args[0].As<Int32>()->Value();
SSL_CTX_set_timeout(sc->ctx_.get(), sessionTimeout);
}
void SecureContext::Close(const FunctionCallbackInfo<Value>& args) {
SecureContext* sc;
ASSIGN_OR_RETURN_UNWRAP(&sc, args.Holder());
sc->Reset();
}
// Takes .pfx or .p12 and password in string or buffer format
void SecureContext::LoadPKCS12(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
std::vector<char> pass;
bool ret = false;
SecureContext* sc;
ASSIGN_OR_RETURN_UNWRAP(&sc, args.Holder());
ClearErrorOnReturn clear_error_on_return;
if (args.Length() < 1) {
return THROW_ERR_MISSING_ARGS(env, "PFX certificate argument is mandatory");
}
BIOPointer in(LoadBIO(env, args[0]));
if (!in) {
return THROW_ERR_CRYPTO_OPERATION_FAILED(
env, "Unable to load PFX certificate");
}
if (args.Length() >= 2) {
THROW_AND_RETURN_IF_NOT_BUFFER(env, args[1], "Pass phrase");
Local<ArrayBufferView> abv = args[1].As<ArrayBufferView>();
size_t passlen = abv->ByteLength();
pass.resize(passlen + 1);
abv->CopyContents(pass.data(), passlen);
pass[passlen] = '\0';
}
// Free previous certs
sc->issuer_.reset();
sc->cert_.reset();
X509_STORE* cert_store = SSL_CTX_get_cert_store(sc->ctx_.get());
DeleteFnPtr<PKCS12, PKCS12_free> p12;
EVPKeyPointer pkey;