DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Implementation

Untracked file

Line Code
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Brian Ryner <bryner@brianryner.com>
 *   Kai Engert <kengert@redhat.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef _NSNSSIOLAYER_H
#define _NSNSSIOLAYER_H

#include "prtypes.h"
#include "prio.h"
#include "certt.h"
#include "nsString.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsITransportSecurityInfo.h"
#include "nsISSLSocketControl.h"
#include "nsSSLStatus.h"
#include "nsISSLStatusProvider.h"
#include "nsIIdentityInfo.h"
#include "nsIAssociatedContentSecurity.h"
#include "nsXPIDLString.h"
#include "nsNSSShutDown.h"
#include "nsAutoPtr.h"
#include "nsNSSCertificate.h"

class nsIChannel;
class nsSSLThread;

/*
 * This class is used to store SSL socket I/O state information,
 * that is not being executed directly, but defered to 
 * the separate SSL thread.
 */
class nsSSLSocketThreadData
{
public:
  nsSSLSocketThreadData();
  ~nsSSLSocketThreadData();

  PRBool ensure_buffer_size(PRInt32 amount);
  
  enum ssl_state { 
    ssl_invalid,       // used for initializating, should never occur
    ssl_idle,          // not in use by SSL thread, no activity pending
    ssl_pending_write, // waiting for SSL thread to complete writing
    ssl_pending_read,  // waiting for SSL thread to complete reading
    ssl_writing_done,  // SSL write completed, results are ready
    ssl_reading_done   // SSL read completed, results are ready
  };
  
  ssl_state mSSLState;

  // Used to transport I/O error codes between SSL thread
  // and initial caller thread.
  PRErrorCode mPRErrorCode;

  // A buffer used to transfer I/O data between threads
  char *mSSLDataBuffer;
  PRInt32 mSSLDataBufferAllocatedSize;

  // The amount requested to read or write by the caller.
  PRInt32 mSSLRequestedTransferAmount;

  // A pointer into our buffer, to the first byte
  // that has not yet been delivered to the caller.
  // Necessary, as the caller of the read function
  // might request smaller chunks.
  const char *mSSLRemainingReadResultData;
  
  // The caller previously requested to read or write.
  // As the initial request to read or write is defered,
  // the caller might (in theory) request smaller chunks
  // in subsequent calls.
  // This variable stores the amount of bytes successfully
  // transfered, that have not yet been reported to the caller.
  PRInt32 mSSLResultRemainingBytes;

  // When defering SSL read/write activity to another thread,
  // we switch the SSL level file descriptor of the original
  // layered file descriptor to a pollable event,
  // so we can wake up the original caller of the I/O function
  // as soon as data is ready.
  // This variable is used to save the SSL level file descriptor,
  // to allow us to restore the original file descriptor layering.
  PRFileDesc *mReplacedSSLFileDesc;

  PRBool mOneBytePendingFromEarlierWrite;
  unsigned char mThePendingByte;
  PRInt32 mOriginalRequestedTransferAmount;
};

class nsNSSSocketInfo : public nsITransportSecurityInfo,
                        public nsISSLSocketControl,
                        public nsIInterfaceRequestor,
                        public nsISSLStatusProvider,
                        public nsIIdentityInfo,
                        public nsIAssociatedContentSecurity,
                        public nsISerializable,
                        public nsIClassInfo,
                        public nsNSSShutDownObject,
                        public nsOnPK11LogoutCancelObject
{
public:
  nsNSSSocketInfo();
  virtual ~nsNSSSocketInfo();
  
  NS_DECL_ISUPPORTS
  NS_DECL_NSITRANSPORTSECURITYINFO
  NS_DECL_NSISSLSOCKETCONTROL
  NS_DECL_NSIINTERFACEREQUESTOR
  NS_DECL_NSISSLSTATUSPROVIDER
  NS_DECL_NSIIDENTITYINFO
  NS_DECL_NSIASSOCIATEDCONTENTSECURITY
  NS_DECL_NSISERIALIZABLE
  NS_DECL_NSICLASSINFO

  nsresult SetSecurityState(PRUint32 aState);
  nsresult SetShortSecurityDescription(const PRUnichar *aText);
  nsresult SetErrorMessage(const PRUnichar *aText);

  nsresult SetForSTARTTLS(PRBool aForSTARTTLS);
  nsresult GetForSTARTTLS(PRBool *aForSTARTTLS);

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

  nsresult GetHandshakePending(PRBool *aHandshakePending);
  nsresult SetHandshakePending(PRBool aHandshakePending);

  nsresult GetHostName(char **aHostName);
  nsresult SetHostName(const char *aHostName);

  nsresult GetPort(PRInt32 *aPort);
  nsresult SetPort(PRInt32 aPort);

  nsresult GetCert(nsIX509Cert** _result);
  nsresult SetCert(nsIX509Cert *aCert);

  nsresult GetPreviousCert(nsIX509Cert** _result);

  void SetCanceled(PRBool aCanceled);
  PRBool GetCanceled();
  
  void SetHasCleartextPhase(PRBool aHasCleartextPhase);
  PRBool GetHasCleartextPhase();
  
  void SetHandshakeInProgress(PRBool aIsIn);
  PRBool GetHandshakeInProgress() { return mHandshakeInProgress; }
  PRBool HandshakeTimeout();

  void SetAllowTLSIntoleranceTimeout(PRBool aAllow);

  nsresult GetExternalErrorReporting(PRBool* state);
  nsresult SetExternalErrorReporting(PRBool aState);

  nsresult RememberCAChain(CERTCertList *aCertList);

  /* Set SSL Status values */
  nsresult SetSSLStatus(nsSSLStatus *aSSLStatus);
  nsSSLStatus* SSLStatus() { return mSSLStatus; }
  PRBool hasCertErrors();
  
  PRStatus CloseSocketAndDestroy();
  
protected:
  nsCOMPtr<nsIInterfaceRequestor> mCallbacks;
  PRFileDesc* mFd;
  nsCOMPtr<nsIX509Cert> mCert;
  nsCOMPtr<nsIX509Cert> mPreviousCert; // DocShellDependent
  enum { 
    blocking_state_unknown, is_nonblocking_socket, is_blocking_socket 
  } mBlockingState;
  PRUint32 mSecurityState;
  PRInt32 mSubRequestsHighSecurity;
  PRInt32 mSubRequestsLowSecurity;
  PRInt32 mSubRequestsBrokenSecurity;
  PRInt32 mSubRequestsNoSecurity;
  nsString mShortDesc;
  nsString mErrorMessage;
  PRPackedBool mDocShellDependentStuffKnown;
  PRPackedBool mExternalErrorReporting; // DocShellDependent
  PRPackedBool mForSTARTTLS;
  PRPackedBool mHandshakePending;
  PRPackedBool mCanceled;
  PRPackedBool mHasCleartextPhase;
  PRPackedBool mHandshakeInProgress;
  PRPackedBool mAllowTLSIntoleranceTimeout;
  PRIntervalTime mHandshakeStartTime;
  PRInt32 mPort;
  nsXPIDLCString mHostName;

  /* SSL Status */
  nsRefPtr<nsSSLStatus> mSSLStatus;

  nsresult ActivateSSL();

  nsSSLSocketThreadData *mThreadData;

  nsresult EnsureDocShellDependentStuffKnown();

private:
  virtual void virtualDestroyNSSReference();
  void destructorSafeDestroyNSSReference();

friend class nsSSLThread;
};

class nsCStringHashSet;

class nsSSLIOLayerHelpers
{
public:
  static nsresult Init();
  static void Cleanup();

  static PRBool nsSSLIOLayerInitialized;
  static PRDescIdentity nsSSLIOLayerIdentity;
  static PRIOMethods nsSSLIOLayerMethods;

  static PRLock *mutex;
  static nsCStringHashSet *mTLSIntolerantSites;
  
  static PRBool rememberPossibleTLSProblemSite(PRFileDesc* fd, nsNSSSocketInfo *socketInfo);

  static void addIntolerantSite(const nsCString &str);
  static PRBool isKnownAsIntolerantSite(const nsCString &str);
  
  static PRFileDesc *mSharedPollableEvent;
  static nsNSSSocketInfo *mSocketOwningPollableEvent;
  
  static PRBool mPollableEventCurrentlySet;
};

nsresult nsSSLIOLayerNewSocket(PRInt32 family,
                               const char *host,
                               PRInt32 port,
                               const char *proxyHost,
                               PRInt32 proxyPort,
                               PRFileDesc **fd,
                               nsISupports **securityInfo,
                               PRBool forSTARTTLS);

nsresult nsSSLIOLayerAddToSocket(PRInt32 family,
                                 const char *host,
                                 PRInt32 port,
                                 const char *proxyHost,
                                 PRInt32 proxyPort,
                                 PRFileDesc *fd,
                                 nsISupports **securityInfo,
                                 PRBool forSTARTTLS);

nsresult nsSSLIOLayerFreeTLSIntolerantSites();
nsresult displayUnknownCertErrorAlert(nsNSSSocketInfo *infoObject, int error);

// 16786594-0296-4471-8096-8f84497ca428
#define NS_NSSSOCKETINFO_CID \
{ 0x16786594, 0x0296, 0x4471, \
    { 0x80, 0x96, 0x8f, 0x84, 0x49, 0x7c, 0xa4, 0x28 } }


#endif /* _NSNSSIOLAYER_H */