GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: crypto/crypto_common.cc Lines: 530 693 76.5 %
Date: 2022-05-19 04:15:38 Branches: 281 487 57.7 %

Line Branch Exec Source
1
#include "base_object-inl.h"
2
#include "env-inl.h"
3
#include "node_buffer.h"
4
#include "node_crypto.h"
5
#include "crypto/crypto_common.h"
6
#include "node.h"
7
#include "node_internals.h"
8
#include "node_url.h"
9
#include "string_bytes.h"
10
#include "memory_tracker-inl.h"
11
#include "v8.h"
12
13
#include <openssl/ec.h>
14
#include <openssl/ecdh.h>
15
#include <openssl/evp.h>
16
#include <openssl/pem.h>
17
#include <openssl/x509v3.h>
18
#include <openssl/hmac.h>
19
#include <openssl/rand.h>
20
#include <openssl/pkcs12.h>
21
22
#include <string>
23
#include <unordered_map>
24
25
namespace node {
26
27
using v8::Array;
28
using v8::ArrayBuffer;
29
using v8::ArrayBufferView;
30
using v8::BackingStore;
31
using v8::Context;
32
using v8::EscapableHandleScope;
33
using v8::Integer;
34
using v8::Local;
35
using v8::MaybeLocal;
36
using v8::NewStringType;
37
using v8::Object;
38
using v8::String;
39
using v8::Undefined;
40
using v8::Value;
41
42
namespace crypto {
43
static constexpr int kX509NameFlagsMultiline =
44
    ASN1_STRFLGS_ESC_2253 |
45
    ASN1_STRFLGS_ESC_CTRL |
46
    ASN1_STRFLGS_UTF8_CONVERT |
47
    XN_FLAG_SEP_MULTILINE |
48
    XN_FLAG_FN_SN;
49
50
static constexpr int kX509NameFlagsRFC2253WithinUtf8JSON =
51
    XN_FLAG_RFC2253 &
52
    ~ASN1_STRFLGS_ESC_MSB &
53
    ~ASN1_STRFLGS_ESC_CTRL;
54
55
898
X509Pointer SSL_CTX_get_issuer(SSL_CTX* ctx, X509* cert) {
56
898
  X509_STORE* store = SSL_CTX_get_cert_store(ctx);
57
  DeleteFnPtr<X509_STORE_CTX, X509_STORE_CTX_free> store_ctx(
58
1796
      X509_STORE_CTX_new());
59
898
  X509Pointer result;
60
  X509* issuer;
61
1796
  if (store_ctx.get() != nullptr &&
62

1796
      X509_STORE_CTX_init(store_ctx.get(), store, nullptr, nullptr) == 1 &&
63
898
      X509_STORE_CTX_get1_issuer(&issuer, store_ctx.get(), cert) == 1) {
64
429
    result.reset(issuer);
65
  }
66
898
  return result;
67
}
68
69
void LogSecret(
70
    const SSLPointer& ssl,
71
    const char* name,
72
    const unsigned char* secret,
73
    size_t secretlen) {
74
  auto keylog_cb = SSL_CTX_get_keylog_callback(SSL_get_SSL_CTX(ssl.get()));
75
  unsigned char crandom[32];
76
77
  if (keylog_cb == nullptr ||
78
      SSL_get_client_random(ssl.get(), crandom, 32) != 32) {
79
    return;
80
  }
81
82
  std::string line = name;
83
  line += " " + StringBytes::hex_encode(
84
      reinterpret_cast<const char*>(crandom), 32);
85
  line += " " + StringBytes::hex_encode(
86
      reinterpret_cast<const char*>(secret), secretlen);
87
  keylog_cb(ssl.get(), line.c_str());
88
}
89
90
bool SetALPN(const SSLPointer& ssl, const std::string& alpn) {
91
  return SSL_set_alpn_protos(
92
      ssl.get(),
93
      reinterpret_cast<const uint8_t*>(alpn.c_str()),
94
      alpn.length()) == 0;
95
}
96
97
39
bool SetALPN(const SSLPointer& ssl, Local<Value> alpn) {
98
39
  if (!alpn->IsArrayBufferView())
99
    return false;
100
39
  ArrayBufferViewContents<unsigned char> protos(alpn.As<ArrayBufferView>());
101
39
  return SSL_set_alpn_protos(ssl.get(), protos.data(), protos.length()) == 0;
102
}
103
104
4
MaybeLocal<Value> GetSSLOCSPResponse(
105
    Environment* env,
106
    SSL* ssl,
107
    Local<Value> default_value) {
108
  const unsigned char* resp;
109
4
  int len = SSL_get_tlsext_status_ocsp_resp(ssl, &resp);
110
4
  if (resp == nullptr)
111
2
    return default_value;
112
113
  Local<Value> ret;
114
  MaybeLocal<Object> maybe_buffer =
115
2
      Buffer::Copy(env, reinterpret_cast<const char*>(resp), len);
116
117
2
  if (!maybe_buffer.ToLocal(&ret))
118
    return MaybeLocal<Value>();
119
120
2
  return ret;
121
}
122
123
114
bool SetTLSSession(
124
    const SSLPointer& ssl,
125
    const SSLSessionPointer& session) {
126

114
  return session != nullptr && SSL_set_session(ssl.get(), session.get()) == 1;
127
}
128
129
114
SSLSessionPointer GetTLSSession(const unsigned char* buf, size_t length) {
130
114
  return SSLSessionPointer(d2i_SSL_SESSION(nullptr, &buf, length));
131
}
132
133
963
long VerifyPeerCertificate(  // NOLINT(runtime/int)
134
    const SSLPointer& ssl,
135
    long def) {  // NOLINT(runtime/int)
136
963
  long err = def;  // NOLINT(runtime/int)
137
963
  if (X509* peer_cert = SSL_get_peer_certificate(ssl.get())) {
138
937
    X509_free(peer_cert);
139
937
    err = SSL_get_verify_result(ssl.get());
140
  } else {
141
26
    const SSL_CIPHER* curr_cipher = SSL_get_current_cipher(ssl.get());
142
26
    const SSL_SESSION* sess = SSL_get_session(ssl.get());
143
    // Allow no-cert for PSK authentication in TLS1.2 and lower.
144
    // In TLS1.3 check that session was reused because TLS1.3 PSK
145
    // looks like session resumption.
146

56
    if (SSL_CIPHER_get_auth_nid(curr_cipher) == NID_auth_psk ||
147
30
        (SSL_SESSION_get_protocol_version(sess) == TLS1_3_VERSION &&
148
6
         SSL_session_reused(ssl.get()))) {
149
7
      return X509_V_OK;
150
    }
151
  }
152
956
  return err;
153
}
154
155
12
bool UseSNIContext(
156
    const SSLPointer& ssl, BaseObjectPtr<SecureContext> context) {
157
12
  SSL_CTX* ctx = context->ctx_.get();
158
12
  X509* x509 = SSL_CTX_get0_certificate(ctx);
159
12
  EVP_PKEY* pkey = SSL_CTX_get0_privatekey(ctx);
160
  STACK_OF(X509)* chain;
161
162
12
  int err = SSL_CTX_get0_chain_certs(ctx, &chain);
163
12
  if (err == 1) err = SSL_use_certificate(ssl.get(), x509);
164
12
  if (err == 1) err = SSL_use_PrivateKey(ssl.get(), pkey);
165

12
  if (err == 1 && chain != nullptr) err = SSL_set1_chain(ssl.get(), chain);
166
12
  return err == 1;
167
}
168
169
const char* GetClientHelloALPN(const SSLPointer& ssl) {
170
  const unsigned char* buf;
171
  size_t len;
172
  size_t rem;
173
174
  if (!SSL_client_hello_get0_ext(
175
          ssl.get(),
176
          TLSEXT_TYPE_application_layer_protocol_negotiation,
177
          &buf,
178
          &rem) ||
179
      rem < 2) {
180
    return nullptr;
181
  }
182
183
  len = (buf[0] << 8) | buf[1];
184
  if (len + 2 != rem) return nullptr;
185
  return reinterpret_cast<const char*>(buf + 3);
186
}
187
188
const char* GetClientHelloServerName(const SSLPointer& ssl) {
189
  const unsigned char* buf;
190
  size_t len;
191
  size_t rem;
192
193
  if (!SSL_client_hello_get0_ext(
194
          ssl.get(),
195
          TLSEXT_TYPE_server_name,
196
          &buf,
197
          &rem) || rem <= 2) {
198
    return nullptr;
199
  }
200
201
  len = (*buf << 8) | *(buf + 1);
202
  if (len + 2 != rem)
203
    return nullptr;
204
  rem = len;
205
206
  if (rem == 0 || *(buf + 2) != TLSEXT_NAMETYPE_host_name) return nullptr;
207
  rem--;
208
  if (rem <= 2)
209
    return nullptr;
210
  len = (*(buf + 3) << 8) | *(buf + 4);
211
  if (len + 2 > rem)
212
    return nullptr;
213
  return reinterpret_cast<const char*>(buf + 5);
214
}
215
216
25
const char* GetServerName(SSL* ssl) {
217
25
  return SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name);
218
}
219
220
bool SetGroups(SecureContext* sc, const char* groups) {
221
  return SSL_CTX_set1_groups_list(sc->ssl_ctx(), groups) == 1;
222
}
223
224
468
const char* X509ErrorCode(long err) {  // NOLINT(runtime/int)
225
468
  const char* code = "UNSPECIFIED";
226
#define CASE_X509_ERR(CODE) case X509_V_ERR_##CODE: code = #CODE; break;
227







468
  switch (err) {
228
    // if you modify anything in here, *please* update the respective section in
229
    // doc/api/tls.md as well
230
19
    CASE_X509_ERR(UNABLE_TO_GET_ISSUER_CERT)
231
1
    CASE_X509_ERR(UNABLE_TO_GET_CRL)
232
    CASE_X509_ERR(UNABLE_TO_DECRYPT_CERT_SIGNATURE)
233
    CASE_X509_ERR(UNABLE_TO_DECRYPT_CRL_SIGNATURE)
234
    CASE_X509_ERR(UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY)
235
    CASE_X509_ERR(CERT_SIGNATURE_FAILURE)
236
    CASE_X509_ERR(CRL_SIGNATURE_FAILURE)
237
    CASE_X509_ERR(CERT_NOT_YET_VALID)
238
    CASE_X509_ERR(CERT_HAS_EXPIRED)
239
    CASE_X509_ERR(CRL_NOT_YET_VALID)
240
    CASE_X509_ERR(CRL_HAS_EXPIRED)
241
    CASE_X509_ERR(ERROR_IN_CERT_NOT_BEFORE_FIELD)
242
    CASE_X509_ERR(ERROR_IN_CERT_NOT_AFTER_FIELD)
243
    CASE_X509_ERR(ERROR_IN_CRL_LAST_UPDATE_FIELD)
244
    CASE_X509_ERR(ERROR_IN_CRL_NEXT_UPDATE_FIELD)
245
    CASE_X509_ERR(OUT_OF_MEM)
246
241
    CASE_X509_ERR(DEPTH_ZERO_SELF_SIGNED_CERT)
247
17
    CASE_X509_ERR(SELF_SIGNED_CERT_IN_CHAIN)
248
4
    CASE_X509_ERR(UNABLE_TO_GET_ISSUER_CERT_LOCALLY)
249
183
    CASE_X509_ERR(UNABLE_TO_VERIFY_LEAF_SIGNATURE)
250
    CASE_X509_ERR(CERT_CHAIN_TOO_LONG)
251
1
    CASE_X509_ERR(CERT_REVOKED)
252
    CASE_X509_ERR(INVALID_CA)
253
    CASE_X509_ERR(PATH_LENGTH_EXCEEDED)
254
1
    CASE_X509_ERR(INVALID_PURPOSE)
255
    CASE_X509_ERR(CERT_UNTRUSTED)
256
    CASE_X509_ERR(CERT_REJECTED)
257
    CASE_X509_ERR(HOSTNAME_MISMATCH)
258
  }
259
#undef CASE_X509_ERR
260
468
  return code;
261
}
262
263
MaybeLocal<Value> GetValidationErrorReason(Environment* env, int err) {
264
  if (err == 0)
265
    return Undefined(env->isolate());
266
  const char* reason = X509_verify_cert_error_string(err);
267
  return OneByteString(env->isolate(), reason);
268
}
269
270
MaybeLocal<Value> GetValidationErrorCode(Environment* env, int err) {
271
  if (err == 0)
272
    return Undefined(env->isolate());
273
  return OneByteString(env->isolate(), X509ErrorCode(err));
274
}
275
276
12
MaybeLocal<Value> GetCert(Environment* env, const SSLPointer& ssl) {
277
12
  ClearErrorOnReturn clear_error_on_return;
278
12
  X509* cert = SSL_get_certificate(ssl.get());
279
12
  if (cert == nullptr)
280
2
    return Undefined(env->isolate());
281
282
11
  MaybeLocal<Object> maybe_cert = X509ToObject(env, cert);
283
11
  return maybe_cert.FromMaybe<Value>(Local<Value>());
284
}
285
286
5014
Local<Value> ToV8Value(Environment* env, const BIOPointer& bio) {
287
  BUF_MEM* mem;
288
5014
  BIO_get_mem_ptr(bio.get(), &mem);
289
  MaybeLocal<String> ret =
290
      String::NewFromUtf8(
291
          env->isolate(),
292
5014
          mem->data,
293
          NewStringType::kNormal,
294
5014
          mem->length);
295
5014
  CHECK_EQ(BIO_reset(bio.get()), 1);
296
5014
  return ret.FromMaybe(Local<Value>());
297
}
298
299
namespace {
300
template <typename T>
301
47142
bool Set(
302
    Local<Context> context,
303
    Local<Object> target,
304
    Local<Value> name,
305
    MaybeLocal<T> maybe_value) {
306
  Local<Value> value;
307
47142
  if (!maybe_value.ToLocal(&value))
308
    return false;
309
310
  // Undefined is ignored, but still considered successful
311
94284
  if (value->IsUndefined())
312
7118
    return true;
313
314
80048
  return !target->Set(context, name, value).IsNothing();
315
}
316
317
159
MaybeLocal<Value> GetCipherValue(Environment* env,
318
    const SSL_CIPHER* cipher,
319
    const char* (*getstr)(const SSL_CIPHER* cipher)) {
320
159
  if (cipher == nullptr)
321
    return Undefined(env->isolate());
322
323
318
  return OneByteString(env->isolate(), getstr(cipher));
324
}
325
326
53
MaybeLocal<Value> GetCipherName(Environment* env, const SSL_CIPHER* cipher) {
327
53
  return GetCipherValue(env, cipher, SSL_CIPHER_get_name);
328
}
329
330
53
MaybeLocal<Value> GetCipherStandardName(
331
    Environment* env,
332
    const SSL_CIPHER* cipher) {
333
53
  return GetCipherValue(env, cipher, SSL_CIPHER_standard_name);
334
}
335
336
53
MaybeLocal<Value> GetCipherVersion(Environment* env, const SSL_CIPHER* cipher) {
337
53
  return GetCipherValue(env, cipher, SSL_CIPHER_get_version);
338
}
339
340
448
StackOfX509 CloneSSLCerts(X509Pointer&& cert,
341
                          const STACK_OF(X509)* const ssl_certs) {
342
896
  StackOfX509 peer_certs(sk_X509_new(nullptr));
343
448
  if (cert)
344
    sk_X509_push(peer_certs.get(), cert.release());
345
1238
  for (int i = 0; i < sk_X509_num(ssl_certs); i++) {
346
790
    X509Pointer cert(X509_dup(sk_X509_value(ssl_certs, i)));
347

790
    if (!cert || !sk_X509_push(peer_certs.get(), cert.get()))
348
      return StackOfX509();
349
    // `cert` is now managed by the stack.
350
790
    cert.release();
351
  }
352
448
  return peer_certs;
353
}
354
355
448
MaybeLocal<Object> AddIssuerChainToObject(
356
    X509Pointer* cert,
357
    Local<Object> object,
358
    StackOfX509&& peer_certs,
359
    Environment* const env) {
360
448
  Local<Context> context = env->isolate()->GetCurrentContext();
361
448
  cert->reset(sk_X509_delete(peer_certs.get(), 0));
362
  for (;;) {
363
    int i;
364
453
    for (i = 0; i < sk_X509_num(peer_certs.get()); i++) {
365
342
      X509* ca = sk_X509_value(peer_certs.get(), i);
366
342
      if (X509_check_issued(ca, cert->get()) != X509_V_OK)
367
2
        continue;
368
369
      Local<Object> ca_info;
370
340
      MaybeLocal<Object> maybe_ca_info = X509ToObject(env, ca);
371
340
      if (!maybe_ca_info.ToLocal(&ca_info))
372
        return MaybeLocal<Object>();
373
374
680
      if (!Set<Object>(context, object, env->issuercert_string(), ca_info))
375
        return MaybeLocal<Object>();
376
340
      object = ca_info;
377
378
      // NOTE: Intentionally freeing cert that is not used anymore.
379
      // Delete cert and continue aggregating issuers.
380
340
      cert->reset(sk_X509_delete(peer_certs.get(), i));
381
340
      break;
382
    }
383
384
    // Issuer not found, break out of the loop.
385
451
    if (i == sk_X509_num(peer_certs.get()))
386
448
      break;
387
3
  }
388
448
  return MaybeLocal<Object>(object);
389
}
390
391
448
MaybeLocal<Object> GetLastIssuedCert(
392
    X509Pointer* cert,
393
    const SSLPointer& ssl,
394
    Local<Object> issuer_chain,
395
    Environment* const env) {
396
448
  Local<Context> context = env->isolate()->GetCurrentContext();
397
819
  while (X509_check_issued(cert->get(), cert->get()) != X509_V_OK) {
398
372
    X509Pointer ca;
399
372
    if (!(ca = SSL_CTX_get_issuer(SSL_get_SSL_CTX(ssl.get()), cert->get())))
400
      break;
401
402
    Local<Object> ca_info;
403
372
    MaybeLocal<Object> maybe_ca_info = X509ToObject(env, ca.get());
404
372
    if (!maybe_ca_info.ToLocal(&ca_info))
405
      return MaybeLocal<Object>();
406
407
744
    if (!Set<Object>(context, issuer_chain, env->issuercert_string(), ca_info))
408
      return MaybeLocal<Object>();
409
372
    issuer_chain = ca_info;
410
411
    // For self-signed certificates whose keyUsage field does not include
412
    // keyCertSign, X509_check_issued() will return false. Avoid going into an
413
    // infinite loop by checking if SSL_CTX_get_issuer() returned the same
414
    // certificate.
415
372
    if (cert->get() == ca.get()) break;
416
417
    // Delete previous cert and continue aggregating issuers.
418
371
    *cert = std::move(ca);
419
  }
420
448
  return MaybeLocal<Object>(issuer_chain);
421
}
422
423
3693
void AddFingerprintDigest(
424
    const unsigned char* md,
425
    unsigned int md_size,
426
    char fingerprint[3 * EVP_MAX_MD_SIZE]) {
427
  unsigned int i;
428
3693
  const char hex[] = "0123456789ABCDEF";
429
430
146489
  for (i = 0; i < md_size; i++) {
431
142796
    fingerprint[3*i] = hex[(md[i] & 0xf0) >> 4];
432
142796
    fingerprint[(3*i)+1] = hex[(md[i] & 0x0f)];
433
142796
    fingerprint[(3*i)+2] = ':';
434
  }
435
436
  DCHECK_GT(md_size, 0);
437
3693
  fingerprint[(3 * (md_size - 1)) + 2] = '\0';
438
3693
}
439
440
template <const char* (*nid2string)(int nid)>
441
188
MaybeLocal<Value> GetCurveName(Environment* env, const int nid) {
442
188
  const char* name = nid2string(nid);
443
  return name != nullptr ?
444
      MaybeLocal<Value>(OneByteString(env->isolate(), name)) :
445
376
      MaybeLocal<Value>(Undefined(env->isolate()));
446
}
447
448
47
MaybeLocal<Value> GetECPubKey(
449
    Environment* env,
450
    const EC_GROUP* group,
451
    const ECPointer& ec) {
452
47
  const EC_POINT* pubkey = EC_KEY_get0_public_key(ec.get());
453
47
  if (pubkey == nullptr)
454
    return Undefined(env->isolate());
455
456
47
  return ECPointToBuffer(
457
      env,
458
      group,
459
      pubkey,
460
47
      EC_KEY_get_conv_form(ec.get()),
461
94
      nullptr).FromMaybe(Local<Object>());
462
}
463
464
47
MaybeLocal<Value> GetECGroup(
465
    Environment* env,
466
    const EC_GROUP* group,
467
    const ECPointer& ec) {
468
47
  if (group == nullptr)
469
    return Undefined(env->isolate());
470
471
47
  int bits = EC_GROUP_order_bits(group);
472
47
  if (bits <= 0)
473
    return Undefined(env->isolate());
474
475
94
  return Integer::New(env->isolate(), bits);
476
}
477
478
1183
MaybeLocal<Object> GetPubKey(Environment* env, const RSAPointer& rsa) {
479
1183
  int size = i2d_RSA_PUBKEY(rsa.get(), nullptr);
480
1183
  CHECK_GE(size, 0);
481
482
2366
  std::unique_ptr<BackingStore> bs;
483
  {
484
1183
    NoArrayBufferZeroFillScope no_zero_fill_scope(env->isolate_data());
485
1183
    bs = ArrayBuffer::NewBackingStore(env->isolate(), size);
486
  }
487
488
1183
  unsigned char* serialized = reinterpret_cast<unsigned char*>(bs->Data());
489
1183
  CHECK_GE(i2d_RSA_PUBKEY(rsa.get(), &serialized), 0);
490
491
1183
  Local<ArrayBuffer> ab = ArrayBuffer::New(env->isolate(), std::move(bs));
492
2366
  return Buffer::New(env, ab, 0, ab->ByteLength()).FromMaybe(Local<Object>());
493
}
494
495
1183
MaybeLocal<Value> GetExponentString(
496
    Environment* env,
497
    const BIOPointer& bio,
498
    const BIGNUM* e) {
499
1183
  uint64_t exponent_word = static_cast<uint64_t>(BN_get_word(e));
500
1183
  BIO_printf(bio.get(), "0x%" PRIx64, exponent_word);
501
2366
  return ToV8Value(env, bio);
502
}
503
504
1183
Local<Value> GetBits(Environment* env, const BIGNUM* n) {
505
2366
  return Integer::New(env->isolate(), BN_num_bits(n));
506
}
507
508
1183
MaybeLocal<Value> GetModulusString(
509
    Environment* env,
510
    const BIOPointer& bio,
511
    const BIGNUM* n) {
512
1183
  BN_print(bio.get(), n);
513
2366
  return ToV8Value(env, bio);
514
}
515
}  // namespace
516
517
1232
MaybeLocal<Object> GetRawDERCertificate(Environment* env, X509* cert) {
518
1232
  int size = i2d_X509(cert, nullptr);
519
520
2464
  std::unique_ptr<BackingStore> bs;
521
  {
522
1232
    NoArrayBufferZeroFillScope no_zero_fill_scope(env->isolate_data());
523
1232
    bs = ArrayBuffer::NewBackingStore(env->isolate(), size);
524
  }
525
526
1232
  unsigned char* serialized = reinterpret_cast<unsigned char*>(bs->Data());
527
1232
  CHECK_GE(i2d_X509(cert, &serialized), 0);
528
529
1232
  Local<ArrayBuffer> ab = ArrayBuffer::New(env->isolate(), std::move(bs));
530
2464
  return Buffer::New(env, ab, 0, ab->ByteLength()).FromMaybe(Local<Object>());
531
}
532
533
1233
MaybeLocal<Value> GetSerialNumber(Environment* env, X509* cert) {
534
1233
  if (ASN1_INTEGER* serial_number = X509_get_serialNumber(cert)) {
535
1233
    BignumPointer bn(ASN1_INTEGER_to_BN(serial_number, nullptr));
536
1233
    if (bn) {
537
1233
      char* data = BN_bn2hex(bn.get());
538
1233
      ByteSource buf = ByteSource::Allocated(data, strlen(data));
539
1233
      if (buf)
540
2466
        return OneByteString(env->isolate(), buf.get());
541
    }
542
  }
543
544
  return Undefined(env->isolate());
545
}
546
547
1231
MaybeLocal<Value> GetKeyUsage(Environment* env, X509* cert) {
548
  StackOfASN1 eku(static_cast<STACK_OF(ASN1_OBJECT)*>(
549
2462
      X509_get_ext_d2i(cert, NID_ext_key_usage, nullptr, nullptr)));
550
1231
  if (eku) {
551
9
    const int count = sk_ASN1_OBJECT_num(eku.get());
552
9
    MaybeStackBuffer<Local<Value>, 16> ext_key_usage(count);
553
    char buf[256];
554
555
9
    int j = 0;
556
20
    for (int i = 0; i < count; i++) {
557
11
      if (OBJ_obj2txt(buf,
558
                      sizeof(buf),
559
22
                      sk_ASN1_OBJECT_value(eku.get(), i), 1) >= 0) {
560
22
        ext_key_usage[j++] = OneByteString(env->isolate(), buf);
561
      }
562
    }
563
564
18
    return Array::New(env->isolate(), ext_key_usage.out(), count);
565
  }
566
567
2444
  return Undefined(env->isolate());
568
}
569
570
3693
MaybeLocal<Value> GetFingerprintDigest(
571
    Environment* env,
572
    const EVP_MD* method,
573
    X509* cert) {
574
  unsigned char md[EVP_MAX_MD_SIZE];
575
  unsigned int md_size;
576
  char fingerprint[EVP_MAX_MD_SIZE * 3];
577
578
3693
  if (X509_digest(cert, method, md, &md_size)) {
579
3693
    AddFingerprintDigest(md, md_size, fingerprint);
580
7386
    return OneByteString(env->isolate(), fingerprint);
581
  }
582
  return Undefined(env->isolate());
583
}
584
585
1231
MaybeLocal<Value> GetValidTo(
586
    Environment* env,
587
    X509* cert,
588
    const BIOPointer& bio) {
589
1231
  ASN1_TIME_print(bio.get(), X509_get0_notAfter(cert));
590
2462
  return ToV8Value(env, bio);
591
}
592
593
1231
MaybeLocal<Value> GetValidFrom(
594
    Environment* env,
595
    X509* cert,
596
    const BIOPointer& bio) {
597
1231
  ASN1_TIME_print(bio.get(), X509_get0_notBefore(cert));
598
2462
  return ToV8Value(env, bio);
599
}
600
601
224
static inline bool IsSafeAltName(const char* name, size_t length, bool utf8) {
602
5013
  for (size_t i = 0; i < length; i++) {
603
4835
    char c = name[i];
604
4835
    switch (c) {
605
25
    case '"':
606
    case '\\':
607
      // These mess with encoding rules.
608
      // Fall through.
609
    case ',':
610
      // Commas make it impossible to split the list of subject alternative
611
      // names unambiguously, which is why we have to escape.
612
      // Fall through.
613
    case '\'':
614
      // Single quotes are unlikely to appear in any legitimate values, but they
615
      // could be used to make a value look like it was escaped (i.e., enclosed
616
      // in single/double quotes).
617
25
      return false;
618
4810
    default:
619
4810
      if (utf8) {
620
        // In UTF8 strings, we require escaping for any ASCII control character,
621
        // but NOT for non-ASCII characters. Note that all bytes of any code
622
        // point that consists of more than a single byte have their MSB set.
623

319
        if (static_cast<unsigned char>(c) < ' ' || c == '\x7f') {
624
7
          return false;
625
        }
626
      } else {
627
        // Check if the char is a control character or non-ASCII character. Note
628
        // that char may or may not be a signed type. Regardless, non-ASCII
629
        // values will always be outside of this range.
630

4491
        if (c < ' ' || c > '~') {
631
14
          return false;
632
        }
633
      }
634
    }
635
  }
636
178
  return true;
637
}
638
639
224
static inline void PrintAltName(const BIOPointer& out, const char* name,
640
                                size_t length, bool utf8,
641
                                const char* safe_prefix) {
642
224
  if (IsSafeAltName(name, length, utf8)) {
643
    // For backward-compatibility, append "safe" names without any
644
    // modifications.
645
178
    if (safe_prefix != nullptr) {
646
10
      BIO_printf(out.get(), "%s:", safe_prefix);
647
    }
648
178
    BIO_write(out.get(), name, length);
649
  } else {
650
    // If a name is not "safe", we cannot embed it without special
651
    // encoding. This does not usually happen, but we don't want to hide
652
    // it from the user either. We use JSON compatible escaping here.
653
46
    BIO_write(out.get(), "\"", 1);
654
46
    if (safe_prefix != nullptr) {
655
9
      BIO_printf(out.get(), "%s:", safe_prefix);
656
    }
657
1601
    for (size_t j = 0; j < length; j++) {
658
1555
      char c = static_cast<char>(name[j]);
659
1555
      if (c == '\\') {
660
10
        BIO_write(out.get(), "\\\\", 2);
661
1545
      } else if (c == '"') {
662
4
        BIO_write(out.get(), "\\\"", 2);
663


1541
      } else if ((c >= ' ' && c != ',' && c <= '~') || (utf8 && (c & 0x80))) {
664
        // Note that the above condition explicitly excludes commas, which means
665
        // that those are encoded as Unicode escape sequences in the "else"
666
        // block. That is not strictly necessary, and Node.js itself would parse
667
        // it correctly either way. We only do this to account for third-party
668
        // code that might be splitting the string at commas (as Node.js itself
669
        // used to do).
670
1483
        BIO_write(out.get(), &c, 1);
671
      } else {
672
        // Control character or non-ASCII character. We treat everything as
673
        // Latin-1, which corresponds to the first 255 Unicode code points.
674
58
        const char hex[] = "0123456789abcdef";
675
58
        char u[] = { '\\', 'u', '0', '0', hex[(c & 0xf0) >> 4], hex[c & 0x0f] };
676
58
        BIO_write(out.get(), u, sizeof(u));
677
      }
678
    }
679
46
    BIO_write(out.get(), "\"", 1);
680
  }
681
224
}
682
683
198
static inline void PrintLatin1AltName(const BIOPointer& out,
684
                                      const ASN1_IA5STRING* name,
685
                                      const char* safe_prefix = nullptr) {
686
198
  PrintAltName(out, reinterpret_cast<const char*>(name->data), name->length,
687
               false, safe_prefix);
688
198
}
689
690
12
static inline void PrintUtf8AltName(const BIOPointer& out,
691
                                    const ASN1_UTF8STRING* name,
692
                                    const char* safe_prefix = nullptr) {
693
12
  PrintAltName(out, reinterpret_cast<const char*>(name->data), name->length,
694
               true, safe_prefix);
695
12
}
696
697
// This function emulates the behavior of i2v_GENERAL_NAME in a safer and less
698
// ambiguous way. "othername:" entries use the GENERAL_NAME_print format.
699
252
static bool PrintGeneralName(const BIOPointer& out, const GENERAL_NAME* gen) {
700
252
  if (gen->type == GEN_DNS) {
701
25
    ASN1_IA5STRING* name = gen->d.dNSName;
702
25
    BIO_write(out.get(), "DNS:", 4);
703
    // Note that the preferred name syntax (see RFCs 5280 and 1034) with
704
    // wildcards is a subset of what we consider "safe", so spec-compliant DNS
705
    // names will never need to be escaped.
706
25
    PrintLatin1AltName(out, name);
707
227
  } else if (gen->type == GEN_EMAIL) {
708
4
    ASN1_IA5STRING* name = gen->d.rfc822Name;
709
4
    BIO_write(out.get(), "email:", 6);
710
4
    PrintLatin1AltName(out, name);
711
223
  } else if (gen->type == GEN_URI) {
712
162
    ASN1_IA5STRING* name = gen->d.uniformResourceIdentifier;
713
162
    BIO_write(out.get(), "URI:", 4);
714
    // The set of "safe" names was designed to include just about any URI,
715
    // with a few exceptions, most notably URIs that contains commas (see
716
    // RFC 2396). In other words, most legitimate URIs will not require
717
    // escaping.
718
162
    PrintLatin1AltName(out, name);
719
61
  } else if (gen->type == GEN_DIRNAME) {
720
    // Earlier versions of Node.js used X509_NAME_oneline to print the X509_NAME
721
    // object. The format was non standard and should be avoided. The use of
722
    // X509_NAME_oneline is discouraged by OpenSSL but was required for backward
723
    // compatibility. Conveniently, X509_NAME_oneline produced ASCII and the
724
    // output was unlikely to contains commas or other characters that would
725
    // require escaping. However, it SHOULD NOT produce ASCII output since an
726
    // RFC5280 AttributeValue may be a UTF8String.
727
    // Newer versions of Node.js have since switched to X509_NAME_print_ex to
728
    // produce a better format at the cost of backward compatibility. The new
729
    // format may contain Unicode characters and it is likely to contain commas,
730
    // which require escaping. Fortunately, the recently safeguarded function
731
    // PrintAltName handles all of that safely.
732
14
    BIO_printf(out.get(), "DirName:");
733
14
    BIOPointer tmp(BIO_new(BIO_s_mem()));
734
14
    CHECK(tmp);
735
14
    if (X509_NAME_print_ex(tmp.get(),
736
14
                           gen->d.dirn,
737
                           0,
738
14
                           kX509NameFlagsRFC2253WithinUtf8JSON) < 0) {
739
      return false;
740
    }
741
14
    char* oline = nullptr;
742
14
    long n_bytes = BIO_get_mem_data(tmp.get(), &oline);  // NOLINT(runtime/int)
743
14
    CHECK_GE(n_bytes, 0);
744

14
    CHECK_IMPLIES(n_bytes != 0, oline != nullptr);
745
14
    PrintAltName(out, oline, static_cast<size_t>(n_bytes), true, nullptr);
746
47
  } else if (gen->type == GEN_IPADD) {
747
17
    BIO_printf(out.get(), "IP Address:");
748
17
    const ASN1_OCTET_STRING* ip = gen->d.ip;
749
17
    const unsigned char* b = ip->data;
750
17
    if (ip->length == 4) {
751
11
      BIO_printf(out.get(), "%d.%d.%d.%d", b[0], b[1], b[2], b[3]);
752
6
    } else if (ip->length == 16) {
753
18
      for (unsigned int j = 0; j < 8; j++) {
754
16
        uint16_t pair = (b[2 * j] << 8) | b[2 * j + 1];
755
16
        BIO_printf(out.get(), (j == 0) ? "%X" : ":%X", pair);
756
      }
757
    } else {
758
#if OPENSSL_VERSION_MAJOR >= 3
759
4
      BIO_printf(out.get(), "<invalid length=%d>", ip->length);
760
#else
761
      BIO_printf(out.get(), "<invalid>");
762
#endif
763
    }
764
30
  } else if (gen->type == GEN_RID) {
765
    // Unlike OpenSSL's default implementation, never print the OID as text and
766
    // instead always print its numeric representation.
767
    char oline[256];
768
4
    OBJ_obj2txt(oline, sizeof(oline), gen->d.rid, true);
769
4
    BIO_printf(out.get(), "Registered ID:%s", oline);
770
26
  } else if (gen->type == GEN_OTHERNAME) {
771
    // The format that is used here is based on OpenSSL's implementation of
772
    // GENERAL_NAME_print (as of OpenSSL 3.0.1). Earlier versions of Node.js
773
    // instead produced the same format as i2v_GENERAL_NAME, which was somewhat
774
    // awkward, especially when passed to translatePeerCertificate.
775
26
    bool unicode = true;
776
26
    const char* prefix = nullptr;
777
    // OpenSSL 1.1.1 does not support othername in GENERAL_NAME_print and may
778
    // not define these NIDs.
779
#if OPENSSL_VERSION_MAJOR >= 3
780
26
    int nid = OBJ_obj2nid(gen->d.otherName->type_id);
781

26
    switch (nid) {
782
      case NID_id_on_SmtpUTF8Mailbox:
783
        prefix = "SmtpUTF8Mailbox";
784
        break;
785
12
      case NID_XmppAddr:
786
12
        prefix = "XmppAddr";
787
12
        break;
788
9
      case NID_SRVName:
789
9
        prefix = "SRVName";
790
9
        unicode = false;
791
9
        break;
792
      case NID_ms_upn:
793
        prefix = "UPN";
794
        break;
795
      case NID_NAIRealm:
796
        prefix = "NAIRealm";
797
        break;
798
    }
799
#endif  // OPENSSL_VERSION_MAJOR >= 3
800
26
    int val_type = gen->d.otherName->value->type;
801

26
    if (prefix == nullptr ||
802
12
        (unicode && val_type != V_ASN1_UTF8STRING) ||
803

21
        (!unicode && val_type != V_ASN1_IA5STRING)) {
804
7
      BIO_printf(out.get(), "othername:<unsupported>");
805
    } else {
806
19
      BIO_printf(out.get(), "othername:");
807
19
      if (unicode) {
808
12
        PrintUtf8AltName(out, gen->d.otherName->value->value.utf8string,
809
                         prefix);
810
      } else {
811
7
        PrintLatin1AltName(out, gen->d.otherName->value->value.ia5string,
812
                           prefix);
813
      }
814
    }
815
  } else if (gen->type == GEN_X400) {
816
    // TODO(tniessen): this is what OpenSSL does, implement properly instead
817
    BIO_printf(out.get(), "X400Name:<unsupported>");
818
  } else if (gen->type == GEN_EDIPARTY) {
819
    // TODO(tniessen): this is what OpenSSL does, implement properly instead
820
    BIO_printf(out.get(), "EdiPartyName:<unsupported>");
821
  } else {
822
    // This is safe because X509V3_EXT_d2i would have returned nullptr in this
823
    // case already.
824
    UNREACHABLE();
825
  }
826
827
252
  return true;
828
}
829
830
75
bool SafeX509SubjectAltNamePrint(const BIOPointer& out, X509_EXTENSION* ext) {
831
75
  const X509V3_EXT_METHOD* method = X509V3_EXT_get(ext);
832
75
  CHECK(method == X509V3_EXT_get_nid(NID_subject_alt_name));
833
834
75
  GENERAL_NAMES* names = static_cast<GENERAL_NAMES*>(X509V3_EXT_d2i(ext));
835
75
  if (names == nullptr)
836
    return false;
837
838
75
  bool ok = true;
839
840
162
  for (int i = 0; i < sk_GENERAL_NAME_num(names); i++) {
841
87
    GENERAL_NAME* gen = sk_GENERAL_NAME_value(names, i);
842
843
87
    if (i != 0)
844
12
      BIO_write(out.get(), ", ", 2);
845
846
87
    if (!(ok = PrintGeneralName(out, gen))) {
847
      break;
848
    }
849
  }
850
75
  sk_GENERAL_NAME_pop_free(names, GENERAL_NAME_free);
851
852
75
  return ok;
853
}
854
855
86
bool SafeX509InfoAccessPrint(const BIOPointer& out, X509_EXTENSION* ext) {
856
86
  const X509V3_EXT_METHOD* method = X509V3_EXT_get(ext);
857
86
  CHECK(method == X509V3_EXT_get_nid(NID_info_access));
858
859
  AUTHORITY_INFO_ACCESS* descs =
860
86
      static_cast<AUTHORITY_INFO_ACCESS*>(X509V3_EXT_d2i(ext));
861
86
  if (descs == nullptr)
862
    return false;
863
864
86
  bool ok = true;
865
866
251
  for (int i = 0; i < sk_ACCESS_DESCRIPTION_num(descs); i++) {
867
165
    ACCESS_DESCRIPTION* desc = sk_ACCESS_DESCRIPTION_value(descs, i);
868
869
165
    if (i != 0)
870
79
      BIO_write(out.get(), "\n", 1);
871
872
    char objtmp[80];
873
165
    i2t_ASN1_OBJECT(objtmp, sizeof(objtmp), desc->method);
874
165
    BIO_printf(out.get(), "%s - ", objtmp);
875
165
    if (!(ok = PrintGeneralName(out, desc->location))) {
876
      break;
877
    }
878
  }
879
86
  sk_ACCESS_DESCRIPTION_pop_free(descs, ACCESS_DESCRIPTION_free);
880
881
#if OPENSSL_VERSION_MAJOR < 3
882
  BIO_write(out.get(), "\n", 1);
883
#endif
884
885
86
  return ok;
886
}
887
888
1264
v8::MaybeLocal<v8::Value> GetSubjectAltNameString(
889
    Environment* env,
890
    const BIOPointer& bio,
891
    X509* cert) {
892
1264
  int index = X509_get_ext_by_NID(cert, NID_subject_alt_name, -1);
893
1264
  if (index < 0)
894
2378
    return Undefined(env->isolate());
895
896
75
  X509_EXTENSION* ext = X509_get_ext(cert, index);
897
75
  CHECK_NOT_NULL(ext);
898
899
75
  if (!SafeX509SubjectAltNamePrint(bio, ext)) {
900
    CHECK_EQ(BIO_reset(bio.get()), 1);
901
    return v8::Null(env->isolate());
902
  }
903
904
150
  return ToV8Value(env, bio);
905
}
906
907
1236
v8::MaybeLocal<v8::Value> GetInfoAccessString(
908
    Environment* env,
909
    const BIOPointer& bio,
910
    X509* cert) {
911
1236
  int index = X509_get_ext_by_NID(cert, NID_info_access, -1);
912
1236
  if (index < 0)
913
2300
    return Undefined(env->isolate());
914
915
86
  X509_EXTENSION* ext = X509_get_ext(cert, index);
916
86
  CHECK_NOT_NULL(ext);
917
918
86
  if (!SafeX509InfoAccessPrint(bio, ext)) {
919
    CHECK_EQ(BIO_reset(bio.get()), 1);
920
    return v8::Null(env->isolate());
921
  }
922
923
172
  return ToV8Value(env, bio);
924
}
925
926
11
MaybeLocal<Value> GetIssuerString(
927
    Environment* env,
928
    const BIOPointer& bio,
929
    X509* cert) {
930
11
  X509_NAME* issuer_name = X509_get_issuer_name(cert);
931
11
  if (X509_NAME_print_ex(
932
          bio.get(),
933
          issuer_name,
934
          0,
935
11
          kX509NameFlagsMultiline) <= 0) {
936
    CHECK_EQ(BIO_reset(bio.get()), 1);
937
    return Undefined(env->isolate());
938
  }
939
940
22
  return ToV8Value(env, bio);
941
}
942
943
13
MaybeLocal<Value> GetSubject(
944
    Environment* env,
945
    const BIOPointer& bio,
946
    X509* cert) {
947
13
  if (X509_NAME_print_ex(
948
          bio.get(),
949
13
          X509_get_subject_name(cert),
950
          0,
951
13
          kX509NameFlagsMultiline) <= 0) {
952
    CHECK_EQ(BIO_reset(bio.get()), 1);
953
    return Undefined(env->isolate());
954
  }
955
956
26
  return ToV8Value(env, bio);
957
}
958
959
template <X509_NAME* get_name(const X509*)>
960
4920
static MaybeLocal<Value> GetX509NameObject(Environment* env, X509* cert) {
961
4920
  X509_NAME* name = get_name(cert);
962
4920
  CHECK_NOT_NULL(name);
963
964
4920
  int cnt = X509_NAME_entry_count(name);
965
4920
  CHECK_GE(cnt, 0);
966
967
  Local<Object> result =
968
9840
      Object::New(env->isolate(), Null(env->isolate()), nullptr, nullptr, 0);
969
4920
  if (result.IsEmpty()) {
970
    return MaybeLocal<Value>();
971
  }
972
973
35966
  for (int i = 0; i < cnt; i++) {
974
31046
    X509_NAME_ENTRY* entry = X509_NAME_get_entry(name, i);
975
31046
    CHECK_NOT_NULL(entry);
976
977
    // We intentionally ignore the value of X509_NAME_ENTRY_set because the
978
    // representation as an object does not allow grouping entries into sets
979
    // anyway, and multi-value RDNs are rare, i.e., the vast majority of
980
    // Relative Distinguished Names contains a single type-value pair only.
981
31046
    const ASN1_OBJECT* type = X509_NAME_ENTRY_get_object(entry);
982
31046
    const ASN1_STRING* value = X509_NAME_ENTRY_get_data(entry);
983
984
    // If OpenSSL knows the type, use the short name of the type as the key, and
985
    // the numeric representation of the type's OID otherwise.
986
31046
    int type_nid = OBJ_obj2nid(type);
987
    char type_buf[80];
988
    const char* type_str;
989
31046
    if (type_nid != NID_undef) {
990
31046
      type_str = OBJ_nid2sn(type_nid);
991
31046
      CHECK_NOT_NULL(type_str);
992
    } else {
993
      OBJ_obj2txt(type_buf, sizeof(type_buf), type, true);
994
      type_str = type_buf;
995
    }
996
997
    Local<String> v8_name;
998
62092
    if (!String::NewFromUtf8(env->isolate(), type_str).ToLocal(&v8_name)) {
999
      return MaybeLocal<Value>();
1000
    }
1001
1002
    // The previous implementation used X509_NAME_print_ex, which escapes some
1003
    // characters in the value. The old implementation did not decode/unescape
1004
    // values correctly though, leading to ambiguous and incorrect
1005
    // representations. The new implementation only converts to Unicode and does
1006
    // not escape anything.
1007
    unsigned char* value_str;
1008
31046
    int value_str_size = ASN1_STRING_to_UTF8(&value_str, value);
1009
31046
    if (value_str_size < 0) {
1010
      return Undefined(env->isolate());
1011
    }
1012
1013
    Local<String> v8_value;
1014
31046
    if (!String::NewFromUtf8(env->isolate(),
1015
                             reinterpret_cast<const char*>(value_str),
1016
                             NewStringType::kNormal,
1017
31046
                             value_str_size).ToLocal(&v8_value)) {
1018
      OPENSSL_free(value_str);
1019
      return MaybeLocal<Value>();
1020
    }
1021
1022
31046
    OPENSSL_free(value_str);
1023
1024
    // For backward compatibility, we only create arrays if multiple values
1025
    // exist for the same key. That is not great but there is not much we can
1026
    // change here without breaking things. Note that this creates nested data
1027
    // structures, yet still does not allow representing Distinguished Names
1028
    // accurately.
1029
    bool multiple;
1030
62092
    if (!result->HasOwnProperty(env->context(), v8_name).To(&multiple)) {
1031
      return MaybeLocal<Value>();
1032
31046
    } else if (multiple) {
1033
      Local<Value> accum;
1034
120
      if (!result->Get(env->context(), v8_name).ToLocal(&accum)) {
1035
        return MaybeLocal<Value>();
1036
      }
1037
60
      if (!accum->IsArray()) {
1038
88
        accum = Array::New(env->isolate(), &accum, 1);
1039
88
        if (result->Set(env->context(), v8_name, accum).IsNothing()) {
1040
          return MaybeLocal<Value>();
1041
        }
1042
      }
1043
60
      Local<Array> array = accum.As<Array>();
1044
120
      if (array->Set(env->context(), array->Length(), v8_value).IsNothing()) {
1045
        return MaybeLocal<Value>();
1046
      }
1047
61972
    } else if (result->Set(env->context(), v8_name, v8_value).IsNothing()) {
1048
      return MaybeLocal<Value>();
1049
    }
1050
  }
1051
1052
4920
  return result;
1053
}
1054
1055
53
MaybeLocal<Value> GetCipherName(Environment* env, const SSLPointer& ssl) {
1056
53
  return GetCipherName(env, SSL_get_current_cipher(ssl.get()));
1057
}
1058
1059
53
MaybeLocal<Value> GetCipherStandardName(
1060
    Environment* env,
1061
    const SSLPointer& ssl) {
1062
53
  return GetCipherStandardName(env, SSL_get_current_cipher(ssl.get()));
1063
}
1064
1065
53
MaybeLocal<Value> GetCipherVersion(Environment* env, const SSLPointer& ssl) {
1066
53
  return GetCipherVersion(env, SSL_get_current_cipher(ssl.get()));
1067
}
1068
1069
MaybeLocal<Array> GetClientHelloCiphers(
1070
    Environment* env,
1071
    const SSLPointer& ssl) {
1072
  EscapableHandleScope scope(env->isolate());
1073
  const unsigned char* buf;
1074
  size_t len = SSL_client_hello_get0_ciphers(ssl.get(), &buf);
1075
  size_t count = len / 2;
1076
  MaybeStackBuffer<Local<Value>, 16> ciphers(count);
1077
  int j = 0;
1078
  for (size_t n = 0; n < len; n += 2) {
1079
    const SSL_CIPHER* cipher = SSL_CIPHER_find(ssl.get(), buf);
1080
    buf += 2;
1081
    Local<Object> obj = Object::New(env->isolate());
1082
    if (!Set(env->context(),
1083
             obj,
1084
             env->name_string(),
1085
             GetCipherName(env, cipher)) ||
1086
        !Set(env->context(),
1087
             obj,
1088
             env->standard_name_string(),
1089
             GetCipherStandardName(env, cipher)) ||
1090
        !Set(env->context(),
1091
             obj,
1092
             env->version_string(),
1093
             GetCipherVersion(env, cipher))) {
1094
      return MaybeLocal<Array>();
1095
    }
1096
    ciphers[j++] = obj;
1097
  }
1098
  Local<Array> ret = Array::New(env->isolate(), ciphers.out(), count);
1099
  return scope.Escape(ret);
1100
}
1101
1102
1103
53
MaybeLocal<Object> GetCipherInfo(Environment* env, const SSLPointer& ssl) {
1104
53
  if (SSL_get_current_cipher(ssl.get()) == nullptr)
1105
    return MaybeLocal<Object>();
1106
53
  EscapableHandleScope scope(env->isolate());
1107
53
  Local<Object> info = Object::New(env->isolate());
1108
1109
106
  if (!Set<Value>(env->context(),
1110
                  info,
1111
                  env->name_string(),
1112
53
                  GetCipherName(env, ssl)) ||
1113
106
      !Set<Value>(env->context(),
1114
                  info,
1115
                  env->standard_name_string(),
1116
106
                  GetCipherStandardName(env, ssl)) ||
1117

159
      !Set<Value>(env->context(),
1118
                  info,
1119
                  env->version_string(),
1120
                  GetCipherVersion(env, ssl))) {
1121
    return MaybeLocal<Object>();
1122
  }
1123
1124
53
  return scope.Escape(info);
1125
}
1126
1127
890
MaybeLocal<Object> GetEphemeralKey(Environment* env, const SSLPointer& ssl) {
1128
890
  CHECK_EQ(SSL_is_server(ssl.get()), 0);
1129
  EVP_PKEY* raw_key;
1130
1131
890
  EscapableHandleScope scope(env->isolate());
1132
890
  Local<Object> info = Object::New(env->isolate());
1133
890
  if (!SSL_get_server_tmp_key(ssl.get(), &raw_key))
1134
30
    return scope.Escape(info);
1135
1136
860
  Local<Context> context = env->context();
1137
1720
  crypto::EVPKeyPointer key(raw_key);
1138
1139
860
  int kid = EVP_PKEY_id(key.get());
1140
860
  int bits = EVP_PKEY_bits(key.get());
1141
860
  switch (kid) {
1142
7
    case EVP_PKEY_DH:
1143
28
      if (!Set<String>(context, info, env->type_string(), env->dh_string()) ||
1144

28
          !Set<Integer>(context,
1145
               info,
1146
               env->size_string(),
1147
               Integer::New(env->isolate(), bits))) {
1148
        return MaybeLocal<Object>();
1149
      }
1150
7
      break;
1151
853
    case EVP_PKEY_EC:
1152
    case EVP_PKEY_X25519:
1153
    case EVP_PKEY_X448:
1154
      {
1155
        const char* curve_name;
1156
853
        if (kid == EVP_PKEY_EC) {
1157
10
          ECKeyPointer ec(EVP_PKEY_get1_EC_KEY(key.get()));
1158
5
          int nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec.get()));
1159
5
          curve_name = OBJ_nid2sn(nid);
1160
        } else {
1161
848
          curve_name = OBJ_nid2sn(kid);
1162
        }
1163
2559
        if (!Set<String>(context,
1164
                         info,
1165
                         env->type_string(),
1166
853
                         env->ecdh_string()) ||
1167
2559
            !Set<String>(context,
1168
                info,
1169
                env->name_string(),
1170
1706
                OneByteString(env->isolate(), curve_name)) ||
1171

3412
            !Set<Integer>(context,
1172
                 info,
1173
                 env->size_string(),
1174
                 Integer::New(env->isolate(), bits))) {
1175
          return MaybeLocal<Object>();
1176
853
        }
1177
      }
1178
853
      break;
1179
  }
1180
1181
860
  return scope.Escape(info);
1182
}
1183
1184
73
MaybeLocal<Object> ECPointToBuffer(Environment* env,
1185
                                   const EC_GROUP* group,
1186
                                   const EC_POINT* point,
1187
                                   point_conversion_form_t form,
1188
                                   const char** error) {
1189
73
  size_t len = EC_POINT_point2oct(group, point, form, nullptr, 0, nullptr);
1190
73
  if (len == 0) {
1191
    if (error != nullptr) *error = "Failed to get public key length";
1192
    return MaybeLocal<Object>();
1193
  }
1194
1195
73
  std::unique_ptr<BackingStore> bs;
1196
  {
1197
73
    NoArrayBufferZeroFillScope no_zero_fill_scope(env->isolate_data());
1198
73
    bs = ArrayBuffer::NewBackingStore(env->isolate(), len);
1199
  }
1200
1201
146
  len = EC_POINT_point2oct(group,
1202
                           point,
1203
                           form,
1204
73
                           reinterpret_cast<unsigned char*>(bs->Data()),
1205
                           bs->ByteLength(),
1206
                           nullptr);
1207
73
  if (len == 0) {
1208
    if (error != nullptr) *error = "Failed to get public key";
1209
    return MaybeLocal<Object>();
1210
  }
1211
1212
73
  Local<ArrayBuffer> ab = ArrayBuffer::New(env->isolate(), std::move(bs));
1213
146
  return Buffer::New(env, ab, 0, ab->ByteLength()).FromMaybe(Local<Object>());
1214
}
1215
1216
496
MaybeLocal<Value> GetPeerCert(
1217
    Environment* env,
1218
    const SSLPointer& ssl,
1219
    bool abbreviated,
1220
    bool is_server) {
1221
496
  ClearErrorOnReturn clear_error_on_return;
1222
  Local<Object> result;
1223
  MaybeLocal<Object> maybe_cert;
1224
1225
  // NOTE: This is because of the odd OpenSSL behavior. On client `cert_chain`
1226
  // contains the `peer_certificate`, but on server it doesn't.
1227
992
  X509Pointer cert(is_server ? SSL_get_peer_certificate(ssl.get()) : nullptr);
1228
496
  STACK_OF(X509)* ssl_certs = SSL_get_peer_cert_chain(ssl.get());
1229


496
  if (!cert && (ssl_certs == nullptr || sk_X509_num(ssl_certs) == 0))
1230
10
    return Undefined(env->isolate());
1231
1232
  // Short result requested.
1233
491
  if (abbreviated) {
1234
    maybe_cert =
1235
43
        X509ToObject(env, cert ? cert.get() : sk_X509_value(ssl_certs, 0));
1236
86
    return maybe_cert.ToLocal(&result) ? result : MaybeLocal<Value>();
1237
  }
1238
1239
896
  StackOfX509 peer_certs = CloneSSLCerts(std::move(cert), ssl_certs);
1240
448
  if (peer_certs == nullptr)
1241
    return Undefined(env->isolate());
1242
1243
  // First and main certificate.
1244
896
  X509Pointer first_cert(sk_X509_value(peer_certs.get(), 0));
1245
448
  CHECK(first_cert);
1246
448
  maybe_cert = X509ToObject(env, first_cert.release());
1247
448
  if (!maybe_cert.ToLocal(&result))
1248
    return MaybeLocal<Value>();
1249
1250
  Local<Object> issuer_chain;
1251
  MaybeLocal<Object> maybe_issuer_chain;
1252
1253
  maybe_issuer_chain =
1254
      AddIssuerChainToObject(
1255
          &cert,
1256
          result,
1257
448
          std::move(peer_certs),
1258
448
          env);
1259
448
  if (!maybe_issuer_chain.ToLocal(&issuer_chain))
1260
    return MaybeLocal<Value>();
1261
1262
  maybe_issuer_chain =
1263
      GetLastIssuedCert(
1264
          &cert,
1265
          ssl,
1266
          issuer_chain,
1267
448
          env);
1268
1269
  issuer_chain.Clear();
1270
448
  if (!maybe_issuer_chain.ToLocal(&issuer_chain))
1271
    return MaybeLocal<Value>();
1272
1273
  // Last certificate should be self-signed.
1274
895
  if (X509_check_issued(cert.get(), cert.get()) == X509_V_OK &&
1275

1342
      !Set<Object>(env->context(),
1276
           issuer_chain,
1277
           env->issuercert_string(),
1278
           issuer_chain)) {
1279
    return MaybeLocal<Value>();
1280
  }
1281
1282
448
  return result;
1283
}
1284
1285
1230
MaybeLocal<Object> X509ToObject(
1286
    Environment* env,
1287
    X509* cert) {
1288
1230
  EscapableHandleScope scope(env->isolate());
1289
1230
  Local<Context> context = env->context();
1290
1230
  Local<Object> info = Object::New(env->isolate());
1291
1292
2460
  BIOPointer bio(BIO_new(BIO_s_mem()));
1293
1230
  CHECK(bio);
1294
1295
2460
  if (!Set<Value>(context,
1296
                  info,
1297
                  env->subject_string(),
1298
1230
                  GetX509NameObject<X509_get_subject_name>(env, cert)) ||
1299
2460
      !Set<Value>(context,
1300
                  info,
1301
                  env->issuer_string(),
1302
1230
                  GetX509NameObject<X509_get_issuer_name>(env, cert)) ||
1303
2460
      !Set<Value>(context,
1304
                  info,
1305
                  env->subjectaltname_string(),
1306
2460
                  GetSubjectAltNameString(env, bio, cert)) ||
1307

3690
      !Set<Value>(context,
1308
                  info,
1309
                  env->infoaccess_string(),
1310
                  GetInfoAccessString(env, bio, cert))) {
1311
    return MaybeLocal<Object>();
1312
  }
1313
1314
2460
  EVPKeyPointer pkey(X509_get_pubkey(cert));
1315
1230
  RSAPointer rsa;
1316
1230
  ECPointer ec;
1317
1230
  if (pkey) {
1318
1230
    switch (EVP_PKEY_id(pkey.get())) {
1319
1183
      case EVP_PKEY_RSA:
1320
1183
        rsa.reset(EVP_PKEY_get1_RSA(pkey.get()));
1321
1183
        break;
1322
47
      case EVP_PKEY_EC:
1323
47
        ec.reset(EVP_PKEY_get1_EC_KEY(pkey.get()));
1324
47
        break;
1325
    }
1326
  }
1327
1328
1230
  if (rsa) {
1329
    const BIGNUM* n;
1330
    const BIGNUM* e;
1331
1183
    RSA_get0_key(rsa.get(), &n, &e, nullptr);
1332
2366
    if (!Set<Value>(context,
1333
                    info,
1334
                    env->modulus_string(),
1335
1183
                    GetModulusString(env, bio, n)) ||
1336
3549
        !Set<Value>(context, info, env->bits_string(), GetBits(env, n)) ||
1337
2366
        !Set<Value>(context,
1338
                    info,
1339
                    env->exponent_string(),
1340
2366
                    GetExponentString(env, bio, e)) ||
1341

3549
        !Set<Object>(context,
1342
                     info,
1343
                     env->pubkey_string(),
1344
                     GetPubKey(env, rsa))) {
1345
      return MaybeLocal<Object>();
1346
    }
1347
47
  } else if (ec) {
1348
47
    const EC_GROUP* group = EC_KEY_get0_group(ec.get());
1349
1350
94
    if (!Set<Value>(context,
1351
                    info,
1352
                    env->bits_string(),
1353
94
                    GetECGroup(env, group, ec)) ||
1354

141
        !Set<Value>(context,
1355
                    info,
1356
                    env->pubkey_string(),
1357
                    GetECPubKey(env, group, ec))) {
1358
      return MaybeLocal<Object>();
1359
    }
1360
1361
47
    const int nid = EC_GROUP_get_curve_name(group);
1362
47
    if (nid != 0) {
1363
      // Curve is well-known, get its OID and NIST nick-name (if it has one).
1364
1365
94
      if (!Set<Value>(context,
1366
                      info,
1367
                      env->asn1curve_string(),
1368
94
                      GetCurveName<OBJ_nid2sn>(env, nid)) ||
1369

141
          !Set<Value>(context,
1370
                      info,
1371
                      env->nistcurve_string(),
1372
                      GetCurveName<EC_curve_nid2nist>(env, nid))) {
1373
        return MaybeLocal<Object>();
1374
      }
1375
    } else {
1376
      // Unnamed curves can be described by their mathematical properties,
1377
      // but aren't used much (at all?) with X.509/TLS. Support later if needed.
1378
    }
1379
  }
1380
1381
  // pkey, rsa, and ec pointers are no longer needed.
1382
1230
  pkey.reset();
1383
1230
  rsa.reset();
1384
1230
  ec.reset();
1385
1386
2460
  if (!Set<Value>(context,
1387
                  info,
1388
                  env->valid_from_string(),
1389
2460
                  GetValidFrom(env, cert, bio)) ||
1390

3690
      !Set<Value>(context,
1391
                  info,
1392
                  env->valid_to_string(),
1393
                  GetValidTo(env, cert, bio))) {
1394
    return MaybeLocal<Object>();
1395
  }
1396
1397
  // bio is no longer needed
1398
1230
  bio.reset();
1399
1400
2460
  if (!Set<Value>(context,
1401
                  info,
1402
                  env->fingerprint_string(),
1403
1230
                  GetFingerprintDigest(env, EVP_sha1(), cert)) ||
1404
2460
      !Set<Value>(context,
1405
                  info,
1406
                  env->fingerprint256_string(),
1407
1230
                  GetFingerprintDigest(env, EVP_sha256(), cert)) ||
1408
2460
      !Set<Value>(context,
1409
                  info,
1410
                  env->fingerprint512_string(),
1411
1230
                  GetFingerprintDigest(env, EVP_sha512(), cert)) ||
1412
2460
      !Set<Value>(context,
1413
                  info,
1414
                  env->ext_key_usage_string(),
1415
1230
                  GetKeyUsage(env, cert)) ||
1416
2460
      !Set<Value>(context,
1417
                  info,
1418
                  env->serial_number_string(),
1419
2460
                  GetSerialNumber(env, cert)) ||
1420

3690
      !Set<Object>(context,
1421
                   info,
1422
                   env->raw_string(),
1423
                   GetRawDERCertificate(env, cert))) {
1424
    return MaybeLocal<Object>();
1425
  }
1426
1427
1230
  return scope.Escape(info);
1428
}
1429
1430
}  // namespace crypto
1431
}  // namespace node