summaryrefslogtreecommitdiffstats
path: root/security/manager/ssl/NSSSocketControl.h
blob: 7c87ff6305fc960e800f6579542f3292a144a9d3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef NSSSocketControl_h
#define NSSSocketControl_h

#include "CommonSocketControl.h"
#include "SharedSSLState.h"

class NSSSocketControl final : public CommonSocketControl {
 public:
  NSSSocketControl(const nsCString& aHostName, int32_t aPort,
                   mozilla::psm::SharedSSLState& aState, uint32_t providerFlags,
                   uint32_t providerTlsFlags);

  NS_INLINE_DECL_REFCOUNTING_INHERITED(NSSSocketControl, CommonSocketControl);

  void SetForSTARTTLS(bool aForSTARTTLS);
  bool GetForSTARTTLS();

  nsresult GetFileDescPtr(PRFileDesc** aFilePtr);
  nsresult SetFileDescPtr(PRFileDesc* aFilePtr);

  bool IsHandshakePending() const {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    return mHandshakePending;
  }
  void SetHandshakeNotPending() {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    mHandshakePending = false;
  }

  void SetTLSVersionRange(SSLVersionRange range) {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    mTLSVersionRange = range;
  }
  SSLVersionRange GetTLSVersionRange() const {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    return mTLSVersionRange;
  };

  // From nsITLSSocketControl.
  NS_IMETHOD ProxyStartSSL(void) override;
  NS_IMETHOD StartTLS(void) override;
  NS_IMETHOD SetNPNList(nsTArray<nsCString>& aNPNList) override;
  NS_IMETHOD GetAlpnEarlySelection(nsACString& _retval) override;
  NS_IMETHOD GetEarlyDataAccepted(bool* aEarlyDataAccepted) override;
  NS_IMETHOD DriveHandshake(void) override;
  NS_IMETHOD GetKEAUsed(int16_t* aKEAUsed) override;
  NS_IMETHOD GetKEAKeyBits(uint32_t* aKEAKeyBits) override;
  NS_IMETHOD GetSSLVersionOffered(int16_t* aSSLVersionOffered) override;
  NS_IMETHOD GetMACAlgorithmUsed(int16_t* aMACAlgorithmUsed) override;
  bool GetDenyClientCert() override;
  void SetDenyClientCert(bool aDenyClientCert) override;
  NS_IMETHOD GetEsniTxt(nsACString& aEsniTxt) override;
  NS_IMETHOD SetEsniTxt(const nsACString& aEsniTxt) override;
  NS_IMETHOD GetEchConfig(nsACString& aEchConfig) override;
  NS_IMETHOD SetEchConfig(const nsACString& aEchConfig) override;
  NS_IMETHOD GetPeerId(nsACString& aResult) override;
  NS_IMETHOD GetRetryEchConfig(nsACString& aEchConfig) override;
  NS_IMETHOD DisableEarlyData(void) override;
  NS_IMETHOD SetHandshakeCallbackListener(
      nsITlsHandshakeCallbackListener* callback) override;

  PRStatus CloseSocketAndDestroy();

  void SetNegotiatedNPN(const char* value, uint32_t length);
  void SetEarlyDataAccepted(bool aAccepted);

  void SetHandshakeCompleted();
  bool IsHandshakeCompleted() const {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    return mHandshakeCompleted;
  }
  void NoteTimeUntilReady();

  void SetFalseStartCallbackCalled() {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    mFalseStartCallbackCalled = true;
  }
  void SetFalseStarted() {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    mFalseStarted = true;
  }

  // Note that this is only valid *during* a handshake; at the end of the
  // handshake, it gets reset back to false.
  void SetFullHandshake() {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    mIsFullHandshake = true;
  }
  bool IsFullHandshake() const {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    return mIsFullHandshake;
  }

  void UpdateEchExtensionStatus(EchExtensionStatus aEchExtensionStatus) {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    mEchExtensionStatus = std::max(aEchExtensionStatus, mEchExtensionStatus);
  }
  EchExtensionStatus GetEchExtensionStatus() const {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    return mEchExtensionStatus;
  }

  bool GetJoined() {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    return mJoined;
  }

  uint32_t GetProviderTlsFlags() const {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    return mProviderTlsFlags;
  }

  mozilla::psm::SharedSSLState& SharedState();

  // XXX: These are only used on for diagnostic purposes
  enum CertVerificationState {
    before_cert_verification,
    waiting_for_cert_verification,
    after_cert_verification
  };
  void SetCertVerificationWaiting();
  // Use errorCode == 0 to indicate success;
  void SetCertVerificationResult(PRErrorCode errorCode) override;

  void ClientAuthCertificateSelected(
      nsTArray<uint8_t>& certBytes,
      nsTArray<nsTArray<uint8_t>>& certChainBytes);

  // for logging only
  PRBool IsWaitingForCertVerification() const {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    return mCertVerificationState == waiting_for_cert_verification;
  }
  void AddPlaintextBytesRead(uint64_t val) {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    mPlaintextBytesRead += val;
  }

  bool IsPreliminaryHandshakeDone() const {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    return mPreliminaryHandshakeDone;
  }
  void SetPreliminaryHandshakeDone() {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    mPreliminaryHandshakeDone = true;
  }

  void SetKEAUsed(int16_t kea) {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    mKEAUsed = kea;
  }

  void SetKEAKeyBits(uint32_t keaBits) {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    mKEAKeyBits = keaBits;
  }

  void SetMACAlgorithmUsed(int16_t mac) {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    mMACAlgorithmUsed = mac;
  }

  void SetShortWritePending(int32_t amount, unsigned char data) {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    mIsShortWritePending = true;
    mShortWriteOriginalAmount = amount;
    mShortWritePendingByte = data;
  }

  bool IsShortWritePending() {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    return mIsShortWritePending;
  }

  unsigned char const* GetShortWritePendingByteRef() {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    return &mShortWritePendingByte;
  }

  int32_t ResetShortWritePending() {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    mIsShortWritePending = false;
    return mShortWriteOriginalAmount;
  }

#ifdef DEBUG
  // These helpers assert that the caller does try to send the same data
  // as it was previously when we hit the short-write.  This is a measure
  // to make sure we communicate correctly to the consumer.
  void RememberShortWrittenBuffer(const unsigned char* data) {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    mShortWriteBufferCheck =
        mozilla::MakeUnique<char[]>(mShortWriteOriginalAmount);
    memcpy(mShortWriteBufferCheck.get(), data, mShortWriteOriginalAmount);
  }
  void CheckShortWrittenBuffer(const unsigned char* data, int32_t amount) {
    COMMON_SOCKET_CONTROL_ASSERT_ON_OWNING_THREAD();
    if (!mShortWriteBufferCheck) return;
    MOZ_ASSERT(amount >= mShortWriteOriginalAmount,
               "unexpected amount length after short write");
    MOZ_ASSERT(
        !memcmp(mShortWriteBufferCheck.get(), data, mShortWriteOriginalAmount),
        "unexpected buffer content after short write");
    mShortWriteBufferCheck = nullptr;
  }
#endif

  void SetSharedOwningReference(mozilla::psm::SharedSSLState* ref);

  nsresult SetResumptionTokenFromExternalCache();

  void SetPreliminaryHandshakeInfo(const SSLChannelInfo& channelInfo,
                                   const SSLCipherSuiteInfo& cipherInfo);

 private:
  ~NSSSocketControl() = default;
  PRFileDesc* mFd;

  CertVerificationState mCertVerificationState;

  mozilla::psm::SharedSSLState& mSharedState;
  bool mForSTARTTLS;
  SSLVersionRange mTLSVersionRange;
  bool mHandshakePending;
  bool mPreliminaryHandshakeDone;  // after false start items are complete

  nsresult ActivateSSL();

  nsCString mEsniTxt;
  nsCString mEchConfig;
  bool mEarlyDataAccepted;
  bool mDenyClientCert;
  bool mFalseStartCallbackCalled;
  bool mFalseStarted;
  bool mIsFullHandshake;
  bool mNotedTimeUntilReady;
  EchExtensionStatus mEchExtensionStatus;  // Currently only used for telemetry.

  // True when SSL layer has indicated an "SSL short write", i.e. need
  // to call on send one or more times to push all pending data to write.
  bool mIsShortWritePending;

  // These are only valid if mIsShortWritePending is true.
  //
  // Value of the last byte pending from the SSL short write that needs
  // to be passed to subsequent calls to send to perform the flush.
  unsigned char mShortWritePendingByte;

  // Original amount of data the upper layer has requested to write to
  // return after the successful flush.
  int32_t mShortWriteOriginalAmount;

#ifdef DEBUG
  mozilla::UniquePtr<char[]> mShortWriteBufferCheck;
#endif

  // mKEA* are used in false start and http/2 detetermination
  // Values are from nsITLSSocketControl
  int16_t mKEAUsed;
  uint32_t mKEAKeyBits;
  int16_t mMACAlgorithmUsed;

  uint32_t mProviderTlsFlags;
  mozilla::TimeStamp mSocketCreationTimestamp;
  uint64_t mPlaintextBytesRead;

  // Regarding the client certificate message in the TLS handshake, RFC 5246
  // (TLS 1.2) says:
  //   If the certificate_authorities list in the certificate request
  //   message was non-empty, one of the certificates in the certificate
  //   chain SHOULD be issued by one of the listed CAs.
  // (RFC 8446 (TLS 1.3) has a similar provision)
  // These certificates may be known to gecko but not NSS (e.g. enterprise
  // intermediates). In order to make these certificates discoverable to NSS
  // so it can include them in the message, we cache them here as temporary
  // certificates.
  mozilla::UniqueCERTCertList mClientCertChain;

  // if non-null this is a reference to the mSharedState (which is
  // not an owning reference). If this is used, the info has a private
  // state that does not share things like intolerance lists with the
  // rest of the session. This is normally used when you have per
  // socket tls flags overriding session wide defaults.
  RefPtr<mozilla::psm::SharedSSLState> mOwningSharedRef;

  nsCOMPtr<nsITlsHandshakeCallbackListener> mTlsHandshakeCallback;
};

#endif  // NSSSocketControl_h