The Tor Browser: media/mtransport/nriceresolverfake.h@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* vim: set ts=2 et sw=2 tw=80: */

     3 /* This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,

     5  * You can obtain one at http://mozilla.org/MPL/2.0/. */

     8 // Original author: ekr@rtfm.com

    10 // Some of this code is cut-and-pasted from nICEr. Copyright is:

    12 /*

    13 Copyright (c) 2007, Adobe Systems, Incorporated

    14 All rights reserved.

    16 Redistribution and use in source and binary forms, with or without

    17 modification, are permitted provided that the following conditions are

    18 met:

    20 * Redistributions of source code must retain the above copyright

    21   notice, this list of conditions and the following disclaimer.

    23 * Redistributions in binary form must reproduce the above copyright

    24   notice, this list of conditions and the following disclaimer in the

    25   documentation and/or other materials provided with the distribution.

    27 * Neither the name of Adobe Systems, Network Resonance nor the names of its

    28   contributors may be used to endorse or promote products derived from

    29   this software without specific prior written permission.

    31 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

    32 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

    33 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

    34 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

    35 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

    36 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

    37 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

    38 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

    39 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    40 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    41 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    42 */

    44 #ifndef nriceresolverfake_h__

    45 #define nriceresolverfake_h__

    47 #include <map>

    48 #include <string>

    50 #include "nspr.h"

    51 #include "prnetdb.h"

    52 #include "mozilla/NullPtr.h"

    54 typedef struct nr_resolver_ nr_resolver;

    55 typedef struct nr_resolver_vtbl_ nr_resolver_vtbl;

    56 typedef struct nr_transport_addr_ nr_transport_addr;

    57 typedef struct nr_resolver_resource_ nr_resolver_resource;

    59 namespace mozilla {

    61 class NrIceResolverFake {

    62  public:

    63   NrIceResolverFake();

    64   ~NrIceResolverFake();

    66   void SetAddr(const std::string& hostname, const PRNetAddr& addr) {

    67     addrs_[hostname] = addr;

    68   }

    70   nr_resolver *AllocateResolver();

    72   void DestroyResolver();

    74 private:

    75   // Implementations of vtbl functions

    76   static int destroy(void **objp);

    77   static int resolve(void *obj,

    78                      nr_resolver_resource *resource,

    79                      int (*cb)(void *cb_arg,

    80                                nr_transport_addr *addr),

    81                      void *cb_arg,

    82                      void **handle);

    83   static void resolve_cb(NR_SOCKET s, int how, void *cb_arg);

    84   static int cancel(void *obj, void *handle);

    86   // Get an address.

    87   const PRNetAddr *Resolve(const std::string& hostname) {

    88     if (!addrs_.count(hostname))

    89       return nullptr;

    91     return &addrs_[hostname];

    92   }

    95   struct PendingResolution {

    96     PendingResolution(NrIceResolverFake *resolver,

    97                       const std::string& hostname,

    98                       uint16_t port,

    99                       int transport,

   100                       int (*cb)(void *cb_arg, nr_transport_addr *addr),

   101                       void *cb_arg) :

   102         resolver_(resolver),

   103         hostname_(hostname),

   104         port_(port),

   105         transport_(transport),

   106         cb_(cb), cb_arg_(cb_arg) {}

   108     NrIceResolverFake *resolver_;

   109     std::string hostname_;

   110     uint16_t port_;

   111     int transport_;

   112     int (*cb_)(void *cb_arg, nr_transport_addr *addr);

   113     void *cb_arg_;

   114     void *timer_handle_;

   115   };

   117   nr_resolver_vtbl* vtbl_;

   118   std::map<std::string, PRNetAddr> addrs_;

   119   uint32_t delay_ms_;

   120   int allocated_resolvers_;

   121 };

   123 }  // End of namespace mozilla

   125 #endif

The Tor Browser / file revision

media/mtransport/nriceresolverfake.h@97036ab72558

media/mtransport/nriceresolverfake.h