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node_crypto.cc
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node_crypto.cc
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#include <node_crypto.h>
#include <v8.h>
#include <node.h>
#include <node_buffer.h>
#include <node_root_certs.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#if OPENSSL_VERSION_NUMBER >= 0x10000000L
# define OPENSSL_CONST const
#else
# define OPENSSL_CONST
#endif
namespace node {
namespace crypto {
using namespace v8;
static Persistent<String> errno_symbol;
static Persistent<String> syscall_symbol;
static Persistent<String> subject_symbol;
static Persistent<String> issuer_symbol;
static Persistent<String> valid_from_symbol;
static Persistent<String> valid_to_symbol;
static Persistent<String> fingerprint_symbol;
static Persistent<String> name_symbol;
static Persistent<String> version_symbol;
static Persistent<String> ext_key_usage_symbol;
void SecureContext::Initialize(Handle<Object> target) {
HandleScope scope;
Local<FunctionTemplate> t = FunctionTemplate::New(SecureContext::New);
t->InstanceTemplate()->SetInternalFieldCount(1);
t->SetClassName(String::NewSymbol("SecureContext"));
NODE_SET_PROTOTYPE_METHOD(t, "init", SecureContext::Init);
NODE_SET_PROTOTYPE_METHOD(t, "setKey", SecureContext::SetKey);
NODE_SET_PROTOTYPE_METHOD(t, "setCert", SecureContext::SetCert);
NODE_SET_PROTOTYPE_METHOD(t, "addCACert", SecureContext::AddCACert);
NODE_SET_PROTOTYPE_METHOD(t, "addCRL", SecureContext::AddCRL);
NODE_SET_PROTOTYPE_METHOD(t, "addRootCerts", SecureContext::AddRootCerts);
NODE_SET_PROTOTYPE_METHOD(t, "setCiphers", SecureContext::SetCiphers);
NODE_SET_PROTOTYPE_METHOD(t, "close", SecureContext::Close);
target->Set(String::NewSymbol("SecureContext"), t->GetFunction());
}
Handle<Value> SecureContext::New(const Arguments& args) {
HandleScope scope;
SecureContext *p = new SecureContext();
p->Wrap(args.Holder());
return args.This();
}
Handle<Value> SecureContext::Init(const Arguments& args) {
HandleScope scope;
SecureContext *sc = ObjectWrap::Unwrap<SecureContext>(args.Holder());
OPENSSL_CONST SSL_METHOD *method = SSLv23_method();
if (args.Length() == 1 && args[0]->IsString()) {
String::Utf8Value sslmethod(args[0]->ToString());
if (strcmp(*sslmethod, "SSLv2_method") == 0) {
method = SSLv2_method();
} else if (strcmp(*sslmethod, "SSLv2_server_method") == 0) {
method = SSLv2_server_method();
} else if (strcmp(*sslmethod, "SSLv2_client_method") == 0) {
method = SSLv2_client_method();
} else if (strcmp(*sslmethod, "SSLv3_method") == 0) {
method = SSLv3_method();
} else if (strcmp(*sslmethod, "SSLv3_server_method") == 0) {
method = SSLv3_server_method();
} else if (strcmp(*sslmethod, "SSLv3_client_method") == 0) {
method = SSLv3_client_method();
} else if (strcmp(*sslmethod, "SSLv23_method") == 0) {
method = SSLv23_method();
} else if (strcmp(*sslmethod, "SSLv23_server_method") == 0) {
method = SSLv23_server_method();
} else if (strcmp(*sslmethod, "SSLv23_client_method") == 0) {
method = SSLv23_client_method();
} else if (strcmp(*sslmethod, "TLSv1_method") == 0) {
method = TLSv1_method();
} else if (strcmp(*sslmethod, "TLSv1_server_method") == 0) {
method = TLSv1_server_method();
} else if (strcmp(*sslmethod, "TLSv1_client_method") == 0) {
method = TLSv1_client_method();
} else {
return ThrowException(Exception::Error(String::New("Unknown method")));
}
}
sc->ctx_ = SSL_CTX_new(method);
// Enable session caching?
SSL_CTX_set_session_cache_mode(sc->ctx_, SSL_SESS_CACHE_SERVER);
// SSL_CTX_set_session_cache_mode(sc->ctx_,SSL_SESS_CACHE_OFF);
sc->ca_store_ = X509_STORE_new();
SSL_CTX_set_cert_store(sc->ctx_, sc->ca_store_);
return True();
}
// Takes a string or buffer and loads it into a BIO.
// Caller responsible for BIO_free-ing the returned object.
static BIO* LoadBIO (Handle<Value> v) {
BIO *bio = BIO_new(BIO_s_mem());
if (!bio) return NULL;
HandleScope scope;
int r;
if (v->IsString()) {
String::Utf8Value s(v->ToString());
r = BIO_write(bio, *s, s.length());
} else if (Buffer::HasInstance(v)) {
Local<Object> buffer_obj = v->ToObject();
char *buffer_data = Buffer::Data(buffer_obj);
size_t buffer_length = Buffer::Length(buffer_obj);
r = BIO_write(bio, buffer_data, buffer_length);
}
if (r <= 0) {
BIO_free(bio);
return NULL;
}
return bio;
}
// Takes a string or buffer and loads it into an X509
// Caller responsible for X509_free-ing the returned object.
static X509* LoadX509 (Handle<Value> v) {
HandleScope scope; // necessary?
BIO *bio = LoadBIO(v);
if (!bio) return NULL;
X509 * x509 = PEM_read_bio_X509(bio, NULL, NULL, NULL);
if (!x509) {
BIO_free(bio);
return NULL;
}
BIO_free(bio);
return x509;
}
Handle<Value> SecureContext::SetKey(const Arguments& args) {
HandleScope scope;
SecureContext *sc = ObjectWrap::Unwrap<SecureContext>(args.Holder());
if (args.Length() != 1) {
return ThrowException(Exception::TypeError(String::New("Bad parameter")));
}
BIO *bio = LoadBIO(args[0]);
if (!bio) return False();
EVP_PKEY* key = PEM_read_bio_PrivateKey(bio, NULL, NULL, NULL);
if (!key) {
BIO_free(bio);
return False();
}
SSL_CTX_use_PrivateKey(sc->ctx_, key);
EVP_PKEY_free(key);
BIO_free(bio);
return True();
}
// 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 - editted for style.
int SSL_CTX_use_certificate_chain(SSL_CTX *ctx, BIO *in) {
int ret = 0;
X509 *x = NULL;
x = PEM_read_bio_X509_AUX(in, NULL, NULL, NULL);
if (x == NULL) {
SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_CHAIN_FILE, ERR_R_PEM_LIB);
goto end;
}
ret = SSL_CTX_use_certificate(ctx, x);
if (ERR_peek_error() != 0) {
// Key/certificate mismatch doesn't imply ret==0 ...
ret = 0;
}
if (ret) {
// If we could set up our certificate, now proceed to
// the CA certificates.
X509 *ca;
int r;
unsigned long err;
if (ctx->extra_certs != NULL) {
sk_X509_pop_free(ctx->extra_certs, X509_free);
ctx->extra_certs = NULL;
}
while ((ca = PEM_read_bio_X509(in, NULL, NULL, NULL))) {
r = SSL_CTX_add_extra_chain_cert(ctx, ca);
if (!r) {
X509_free(ca);
ret = 0;
goto end;
}
// 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).
}
// 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
ret = 0;
}
}
end:
if (x != NULL) X509_free(x);
return ret;
}
Handle<Value> SecureContext::SetCert(const Arguments& args) {
HandleScope scope;
SecureContext *sc = ObjectWrap::Unwrap<SecureContext>(args.Holder());
if (args.Length() != 1) {
return ThrowException(Exception::TypeError(
String::New("Bad parameter")));
}
BIO* bio = LoadBIO(args[0]);
if (!bio) return False();
int rv = SSL_CTX_use_certificate_chain(sc->ctx_, bio);
BIO_free(bio);
if (!rv) {
unsigned long err = ERR_get_error();
if (!err) {
return ThrowException(Exception::Error(
String::New("SSL_CTX_use_certificate_chain")));
}
char string[120];
ERR_error_string(err, string);
return ThrowException(Exception::Error(String::New(string)));
}
return True();
}
Handle<Value> SecureContext::AddCACert(const Arguments& args) {
HandleScope scope;
SecureContext *sc = ObjectWrap::Unwrap<SecureContext>(args.Holder());
if (args.Length() != 1) {
return ThrowException(Exception::TypeError(String::New("Bad parameter")));
}
X509* x509 = LoadX509(args[0]);
if (!x509) return False();
X509_STORE_add_cert(sc->ca_store_, x509);
X509_free(x509);
return True();
}
Handle<Value> SecureContext::AddCRL(const Arguments& args) {
HandleScope scope;
SecureContext *sc = ObjectWrap::Unwrap<SecureContext>(args.Holder());
if (args.Length() != 1) {
return ThrowException(Exception::TypeError(String::New("Bad parameter")));
}
BIO *bio = LoadBIO(args[0]);
if (!bio) return False();
X509_CRL *x509 = PEM_read_bio_X509_CRL(bio, NULL, NULL, NULL);
if (x509 == NULL) {
BIO_free(bio);
return False();
}
X509_STORE_add_crl(sc->ca_store_, x509);
X509_STORE_set_flags(sc->ca_store_, X509_V_FLAG_CRL_CHECK |
X509_V_FLAG_CRL_CHECK_ALL);
BIO_free(bio);
X509_CRL_free(x509);
return True();
}
Handle<Value> SecureContext::AddRootCerts(const Arguments& args) {
HandleScope scope;
SecureContext *sc = ObjectWrap::Unwrap<SecureContext>(args.Holder());
for (int i = 0; root_certs[i]; i++) {
// TODO: reuse bp ?
BIO *bp = BIO_new(BIO_s_mem());
if (!BIO_write(bp, root_certs[i], strlen(root_certs[i]))) {
BIO_free(bp);
return False();
}
X509 *x509 = PEM_read_bio_X509(bp, NULL, NULL, NULL);
if (x509 == NULL) {
BIO_free(bp);
return False();
}
X509_STORE_add_cert(sc->ca_store_, x509);
BIO_free(bp);
X509_free(x509);
}
return True();
}
Handle<Value> SecureContext::SetCiphers(const Arguments& args) {
HandleScope scope;
SecureContext *sc = ObjectWrap::Unwrap<SecureContext>(args.Holder());
if (args.Length() != 1 || !args[0]->IsString()) {
return ThrowException(Exception::TypeError(String::New("Bad parameter")));
}
String::Utf8Value ciphers(args[0]->ToString());
SSL_CTX_set_cipher_list(sc->ctx_, *ciphers);
return True();
}
Handle<Value> SecureContext::Close(const Arguments& args) {
HandleScope scope;
SecureContext *sc = ObjectWrap::Unwrap<SecureContext>(args.Holder());
if (sc->ctx_ != NULL) {
SSL_CTX_free(sc->ctx_);
sc->ctx_ = NULL;
sc->ca_store_ = NULL;
return True();
}
return False();
}
#ifdef SSL_PRINT_DEBUG
# define DEBUG_PRINT(...) fprintf (stderr, __VA_ARGS__)
#else
# define DEBUG_PRINT(...)
#endif
int Connection::HandleBIOError(BIO *bio, const char* func, int rv) {
if (rv >= 0) return rv;
int retry = BIO_should_retry(bio);
if (BIO_should_write(bio)) {
DEBUG_PRINT("[%p] BIO: %s want write. should retry %d\n", ssl_, func, retry);
return 0;
} else if (BIO_should_read(bio)) {
DEBUG_PRINT("[%p] BIO: %s want read. should retry %d\n", ssl_, func, retry);
return 0;
} else {
static char ssl_error_buf[512];
ERR_error_string_n(rv, ssl_error_buf, sizeof(ssl_error_buf));
HandleScope scope;
Local<Value> e = Exception::Error(String::New(ssl_error_buf));
handle_->Set(String::New("error"), e);
DEBUG_PRINT("[%p] BIO: %s failed: (%d) %s\n", ssl_, func, rv, ssl_error_buf);
return rv;
}
return 0;
}
int Connection::HandleSSLError(const char* func, int rv) {
if (rv >= 0) return rv;
int err = SSL_get_error(ssl_, rv);
if (err == SSL_ERROR_WANT_WRITE) {
DEBUG_PRINT("[%p] SSL: %s want write\n", ssl_, func);
return 0;
} else if (err == SSL_ERROR_WANT_READ) {
DEBUG_PRINT("[%p] SSL: %s want read\n", ssl_, func);
return 0;
} else {
static char ssl_error_buf[512];
ERR_error_string_n(err, ssl_error_buf, sizeof(ssl_error_buf));
HandleScope scope;
Local<Value> e = Exception::Error(String::New(ssl_error_buf));
handle_->Set(String::New("error"), e);
DEBUG_PRINT("[%p] SSL: %s failed: (%d:%d) %s\n", ssl_, func, err, rv, ssl_error_buf);
return rv;
}
return 0;
}
void Connection::ClearError() {
#ifndef NDEBUG
HandleScope scope;
// We should clear the error in JS-land
assert(handle_->Get(String::New("error"))->BooleanValue() == false);
#endif // NDEBUG
}
void Connection::SetShutdownFlags() {
HandleScope scope;
int flags = SSL_get_shutdown(ssl_);
if (flags & SSL_SENT_SHUTDOWN) {
handle_->Set(String::New("sentShutdown"), True());
}
if (flags & SSL_RECEIVED_SHUTDOWN) {
handle_->Set(String::New("receivedShutdown"), True());
}
}
void Connection::Initialize(Handle<Object> target) {
HandleScope scope;
Local<FunctionTemplate> t = FunctionTemplate::New(Connection::New);
t->InstanceTemplate()->SetInternalFieldCount(1);
t->SetClassName(String::NewSymbol("Connection"));
NODE_SET_PROTOTYPE_METHOD(t, "encIn", Connection::EncIn);
NODE_SET_PROTOTYPE_METHOD(t, "clearOut", Connection::ClearOut);
NODE_SET_PROTOTYPE_METHOD(t, "clearIn", Connection::ClearIn);
NODE_SET_PROTOTYPE_METHOD(t, "encOut", Connection::EncOut);
NODE_SET_PROTOTYPE_METHOD(t, "clearPending", Connection::ClearPending);
NODE_SET_PROTOTYPE_METHOD(t, "encPending", Connection::EncPending);
NODE_SET_PROTOTYPE_METHOD(t, "getPeerCertificate", Connection::GetPeerCertificate);
NODE_SET_PROTOTYPE_METHOD(t, "isInitFinished", Connection::IsInitFinished);
NODE_SET_PROTOTYPE_METHOD(t, "verifyError", Connection::VerifyError);
NODE_SET_PROTOTYPE_METHOD(t, "getCurrentCipher", Connection::GetCurrentCipher);
NODE_SET_PROTOTYPE_METHOD(t, "start", Connection::Start);
NODE_SET_PROTOTYPE_METHOD(t, "shutdown", Connection::Shutdown);
NODE_SET_PROTOTYPE_METHOD(t, "receivedShutdown", Connection::ReceivedShutdown);
NODE_SET_PROTOTYPE_METHOD(t, "close", Connection::Close);
target->Set(String::NewSymbol("Connection"), t->GetFunction());
}
static int VerifyCallback(int preverify_ok, X509_STORE_CTX *ctx) {
// Quoting SSL_set_verify(3ssl):
//
// The VerifyCallback function is used to control the behaviour when
// the SSL_VERIFY_PEER flag is set. It must be supplied by the
// application and receives two arguments: preverify_ok indicates,
// whether the verification of the certificate in question was passed
// (preverify_ok=1) or not (preverify_ok=0). x509_ctx is a pointer to
// the complete context used for the certificate chain verification.
//
// The certificate chain is checked starting with the deepest nesting
// level (the root CA certificate) and worked upward to the peer's
// certificate. At each level signatures and issuer attributes are
// checked. Whenever a verification error is found, the error number is
// stored in x509_ctx and VerifyCallback is called with preverify_ok=0.
// By applying X509_CTX_store_* functions VerifyCallback can locate the
// certificate in question and perform additional steps (see EXAMPLES).
// If no error is found for a certificate, VerifyCallback is called
// with preverify_ok=1 before advancing to the next level.
//
// The return value of VerifyCallback controls the strategy of the
// further verification process. If VerifyCallback returns 0, the
// verification process is immediately stopped with "verification
// failed" state. If SSL_VERIFY_PEER is set, a verification failure
// alert is sent to the peer and the TLS/SSL handshake is terminated. If
// VerifyCallback returns 1, the verification process is continued. If
// VerifyCallback always returns 1, the TLS/SSL handshake will not be
// terminated with respect to verification failures and the connection
// will be established. The calling process can however retrieve the
// error code of the last verification error using
// SSL_get_verify_result(3) or by maintaining its own error storage
// managed by VerifyCallback.
//
// If no VerifyCallback is specified, the default callback will be
// used. Its return value is identical to preverify_ok, so that any
// verification failure will lead to a termination of the TLS/SSL
// handshake with an alert message, if SSL_VERIFY_PEER is set.
//
// Since we cannot perform I/O quickly enough in this callback, we ignore
// all preverify_ok errors and let the handshake continue. It is
// imparative that the user use Connection::VerifyError after the
// 'secure' callback has been made.
return 1;
}
Handle<Value> Connection::New(const Arguments& args) {
HandleScope scope;
Connection *p = new Connection();
p->Wrap(args.Holder());
if (args.Length() < 1 || !args[0]->IsObject()) {
return ThrowException(Exception::Error(String::New(
"First argument must be a crypto module Credentials")));
}
SecureContext *sc = ObjectWrap::Unwrap<SecureContext>(args[0]->ToObject());
bool is_server = args[1]->BooleanValue();
p->ssl_ = SSL_new(sc->ctx_);
p->bio_read_ = BIO_new(BIO_s_mem());
p->bio_write_ = BIO_new(BIO_s_mem());
SSL_set_bio(p->ssl_, p->bio_read_, p->bio_write_);
#ifdef SSL_MODE_RELEASE_BUFFERS
long mode = SSL_get_mode(p->ssl_);
SSL_set_mode(p->ssl_, mode | SSL_MODE_RELEASE_BUFFERS);
#endif
int verify_mode;
if (is_server) {
bool request_cert = args[2]->BooleanValue();
if (!request_cert) {
// Note reject_unauthorized ignored.
verify_mode = SSL_VERIFY_NONE;
} else {
bool reject_unauthorized = args[3]->BooleanValue();
verify_mode = SSL_VERIFY_PEER;
if (reject_unauthorized) verify_mode |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
}
} else {
// Note request_cert and reject_unauthorized are ignored for clients.
verify_mode = SSL_VERIFY_NONE;
}
// Always allow a connection. We'll reject in javascript.
SSL_set_verify(p->ssl_, verify_mode, VerifyCallback);
if ((p->is_server_ = is_server)) {
SSL_set_accept_state(p->ssl_);
} else {
SSL_set_connect_state(p->ssl_);
}
return args.This();
}
Handle<Value> Connection::EncIn(const Arguments& args) {
HandleScope scope;
Connection *ss = Connection::Unwrap(args);
if (args.Length() < 3) {
return ThrowException(Exception::TypeError(
String::New("Takes 3 parameters")));
}
if (!Buffer::HasInstance(args[0])) {
return ThrowException(Exception::TypeError(
String::New("Second argument should be a buffer")));
}
Local<Object> buffer_obj = args[0]->ToObject();
char *buffer_data = Buffer::Data(buffer_obj);
size_t buffer_length = Buffer::Length(buffer_obj);
size_t off = args[1]->Int32Value();
if (off >= buffer_length) {
return ThrowException(Exception::Error(
String::New("Offset is out of bounds")));
}
size_t len = args[2]->Int32Value();
if (off + len > buffer_length) {
return ThrowException(Exception::Error(
String::New("Length is extends beyond buffer")));
}
int bytes_written = BIO_write(ss->bio_read_, buffer_data + off, len);
ss->HandleBIOError(ss->bio_read_, "BIO_write", bytes_written);
ss->SetShutdownFlags();
return scope.Close(Integer::New(bytes_written));
}
Handle<Value> Connection::ClearOut(const Arguments& args) {
HandleScope scope;
Connection *ss = Connection::Unwrap(args);
if (args.Length() < 3) {
return ThrowException(Exception::TypeError(
String::New("Takes 3 parameters")));
}
if (!Buffer::HasInstance(args[0])) {
return ThrowException(Exception::TypeError(
String::New("Second argument should be a buffer")));
}
Local<Object> buffer_obj = args[0]->ToObject();
char *buffer_data = Buffer::Data(buffer_obj);
size_t buffer_length = Buffer::Length(buffer_obj);
size_t off = args[1]->Int32Value();
if (off >= buffer_length) {
return ThrowException(Exception::Error(
String::New("Offset is out of bounds")));
}
size_t len = args[2]->Int32Value();
if (off + len > buffer_length) {
return ThrowException(Exception::Error(
String::New("Length is extends beyond buffer")));
}
if (!SSL_is_init_finished(ss->ssl_)) {
int rv;
if (ss->is_server_) {
rv = SSL_accept(ss->ssl_);
ss->HandleSSLError("SSL_accept:ClearOut", rv);
} else {
rv = SSL_connect(ss->ssl_);
ss->HandleSSLError("SSL_connect:ClearOut", rv);
}
if (rv < 0) return scope.Close(Integer::New(rv));
}
int bytes_read = SSL_read(ss->ssl_, buffer_data + off, len);
ss->HandleSSLError("SSL_read:ClearOut", bytes_read);
ss->SetShutdownFlags();
return scope.Close(Integer::New(bytes_read));
}
Handle<Value> Connection::ClearPending(const Arguments& args) {
HandleScope scope;
Connection *ss = Connection::Unwrap(args);
int bytes_pending = BIO_pending(ss->bio_read_);
return scope.Close(Integer::New(bytes_pending));
}
Handle<Value> Connection::EncPending(const Arguments& args) {
HandleScope scope;
Connection *ss = Connection::Unwrap(args);
int bytes_pending = BIO_pending(ss->bio_write_);
return scope.Close(Integer::New(bytes_pending));
}
Handle<Value> Connection::EncOut(const Arguments& args) {
HandleScope scope;
Connection *ss = Connection::Unwrap(args);
if (args.Length() < 3) {
return ThrowException(Exception::TypeError(
String::New("Takes 3 parameters")));
}
if (!Buffer::HasInstance(args[0])) {
return ThrowException(Exception::TypeError(
String::New("Second argument should be a buffer")));
}
Local<Object> buffer_obj = args[0]->ToObject();
char *buffer_data = Buffer::Data(buffer_obj);
size_t buffer_length = Buffer::Length(buffer_obj);
size_t off = args[1]->Int32Value();
if (off >= buffer_length) {
return ThrowException(Exception::Error(
String::New("Offset is out of bounds")));
}
size_t len = args[2]->Int32Value();
if (off + len > buffer_length) {
return ThrowException(Exception::Error(
String::New("Length is extends beyond buffer")));
}
int bytes_read = BIO_read(ss->bio_write_, buffer_data + off, len);
ss->HandleBIOError(ss->bio_write_, "BIO_read:EncOut", bytes_read);
ss->SetShutdownFlags();
return scope.Close(Integer::New(bytes_read));
}
Handle<Value> Connection::ClearIn(const Arguments& args) {
HandleScope scope;
Connection *ss = Connection::Unwrap(args);
if (args.Length() < 3) {
return ThrowException(Exception::TypeError(
String::New("Takes 3 parameters")));
}
if (!Buffer::HasInstance(args[0])) {
return ThrowException(Exception::TypeError(
String::New("Second argument should be a buffer")));
}
Local<Object> buffer_obj = args[0]->ToObject();
char *buffer_data = Buffer::Data(buffer_obj);
size_t buffer_length = Buffer::Length(buffer_obj);
size_t off = args[1]->Int32Value();
if (off > buffer_length) {
return ThrowException(Exception::Error(
String::New("Offset is out of bounds")));
}
size_t len = args[2]->Int32Value();
if (off + len > buffer_length) {
return ThrowException(Exception::Error(
String::New("Length is extends beyond buffer")));
}
if (!SSL_is_init_finished(ss->ssl_)) {
int rv;
if (ss->is_server_) {
rv = SSL_accept(ss->ssl_);
ss->HandleSSLError("SSL_accept:ClearIn", rv);
} else {
rv = SSL_connect(ss->ssl_);
ss->HandleSSLError("SSL_connect:ClearIn", rv);
}
if (rv < 0) return scope.Close(Integer::New(rv));
}
int bytes_written = SSL_write(ss->ssl_, buffer_data + off, len);
ss->HandleSSLError("SSL_write:ClearIn", bytes_written);
ss->SetShutdownFlags();
return scope.Close(Integer::New(bytes_written));
}
Handle<Value> Connection::GetPeerCertificate(const Arguments& args) {
HandleScope scope;
Connection *ss = Connection::Unwrap(args);
if (ss->ssl_ == NULL) return Undefined();
Local<Object> info = Object::New();
X509* peer_cert = SSL_get_peer_certificate(ss->ssl_);
if (peer_cert != NULL) {
char* subject = X509_NAME_oneline(X509_get_subject_name(peer_cert), 0, 0);
if (subject != NULL) {
info->Set(subject_symbol, String::New(subject));
OPENSSL_free(subject);
}
char* issuer = X509_NAME_oneline(X509_get_issuer_name(peer_cert), 0, 0);
if (subject != NULL) {
info->Set(issuer_symbol, String::New(issuer));
OPENSSL_free(issuer);
}
char buf[256];
BIO* bio = BIO_new(BIO_s_mem());
ASN1_TIME_print(bio, X509_get_notBefore(peer_cert));
memset(buf, 0, sizeof(buf));
BIO_read(bio, buf, sizeof(buf) - 1);
info->Set(valid_from_symbol, String::New(buf));
ASN1_TIME_print(bio, X509_get_notAfter(peer_cert));
memset(buf, 0, sizeof(buf));
BIO_read(bio, buf, sizeof(buf) - 1);
BIO_free(bio);
info->Set(valid_to_symbol, String::New(buf));
unsigned int md_size, i;
unsigned char md[EVP_MAX_MD_SIZE];
if (X509_digest(peer_cert, EVP_sha1(), md, &md_size)) {
const char hex[] = "0123456789ABCDEF";
char fingerprint[EVP_MAX_MD_SIZE * 3];
for (i=0; i<md_size; i++) {
fingerprint[3*i] = hex[(md[i] & 0xf0) >> 4];
fingerprint[(3*i)+1] = hex[(md[i] & 0x0f)];
fingerprint[(3*i)+2] = ':';
}
if (md_size > 0) {
fingerprint[(3*(md_size-1))+2] = '\0';
}
else {
fingerprint[0] = '\0';
}
info->Set(fingerprint_symbol, String::New(fingerprint));
}
STACK_OF(ASN1_OBJECT) *eku = (STACK_OF(ASN1_OBJECT) *)X509_get_ext_d2i(
peer_cert, NID_ext_key_usage, NULL, NULL);
if (eku != NULL) {
Local<Array> ext_key_usage = Array::New();
for (int i = 0; i < sk_ASN1_OBJECT_num(eku); i++) {
memset(buf, 0, sizeof(buf));
OBJ_obj2txt(buf, sizeof(buf) - 1, sk_ASN1_OBJECT_value(eku, i), 1);
ext_key_usage->Set(Integer::New(i), String::New(buf));
}
sk_ASN1_OBJECT_pop_free(eku, ASN1_OBJECT_free);
info->Set(ext_key_usage_symbol, ext_key_usage);
}
X509_free(peer_cert);
}
return scope.Close(info);
}
Handle<Value> Connection::Start(const Arguments& args) {
HandleScope scope;
Connection *ss = Connection::Unwrap(args);
if (!SSL_is_init_finished(ss->ssl_)) {
int rv;
if (ss->is_server_) {
rv = SSL_accept(ss->ssl_);
ss->HandleSSLError("SSL_accept:Start", rv);
} else {
rv = SSL_connect(ss->ssl_);
ss->HandleSSLError("SSL_connect:Start", rv);
}
return scope.Close(Integer::New(rv));
}
return scope.Close(Integer::New(0));
}
Handle<Value> Connection::Shutdown(const Arguments& args) {
HandleScope scope;
Connection *ss = Connection::Unwrap(args);
if (ss->ssl_ == NULL) return False();
int rv = SSL_shutdown(ss->ssl_);
ss->HandleSSLError("SSL_shutdown", rv);
ss->SetShutdownFlags();
return scope.Close(Integer::New(rv));
}
Handle<Value> Connection::ReceivedShutdown(const Arguments& args) {
HandleScope scope;
Connection *ss = Connection::Unwrap(args);
if (ss->ssl_ == NULL) return False();
int r = SSL_get_shutdown(ss->ssl_);
if (r | SSL_RECEIVED_SHUTDOWN) return True();
return False();
}
Handle<Value> Connection::IsInitFinished(const Arguments& args) {
HandleScope scope;
Connection *ss = Connection::Unwrap(args);
if (ss->ssl_ == NULL) return False();
return SSL_is_init_finished(ss->ssl_) ? True() : False();
}
Handle<Value> Connection::VerifyError(const Arguments& args) {
HandleScope scope;
Connection *ss = Connection::Unwrap(args);
if (ss->ssl_ == NULL) return Null();
// XXX Do this check in JS land?
X509* peer_cert = SSL_get_peer_certificate(ss->ssl_);
if (peer_cert == NULL) {
// We requested a certificate and they did not send us one.
// Definitely an error.
// XXX is this the right error message?
return scope.Close(String::New("UNABLE_TO_GET_ISSUER_CERT"));
}
X509_free(peer_cert);
long x509_verify_error = SSL_get_verify_result(ss->ssl_);
Local<String> s;
switch (x509_verify_error) {
case X509_V_OK:
return Null();
case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
s = String::New("UNABLE_TO_GET_ISSUER_CERT");
break;
case X509_V_ERR_UNABLE_TO_GET_CRL:
s = String::New("UNABLE_TO_GET_CRL");
break;
case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
s = String::New("UNABLE_TO_DECRYPT_CERT_SIGNATURE");
break;
case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
s = String::New("UNABLE_TO_DECRYPT_CRL_SIGNATURE");
break;