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/. */
6
7 // Original author: ekr@rtfm.com
8
9 // Some of this code is cut-and-pasted from nICEr. Copyright is:
10
11 /*
12 Copyright (c) 2007, Adobe Systems, Incorporated
13 All rights reserved.
14
15 Redistribution and use in source and binary forms, with or without
16 modification, are permitted provided that the following conditions are
17 met:
18
19 * Redistributions of source code must retain the above copyright
20 notice, this list of conditions and the following disclaimer.
21
22 * Redistributions in binary form must reproduce the above copyright
23 notice, this list of conditions and the following disclaimer in the
24 documentation and/or other materials provided with the distribution.
25
26 * Neither the name of Adobe Systems, Network Resonance nor the names of its
27 contributors may be used to endorse or promote products derived from
28 this software without specific prior written permission.
29
30 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
31 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
32 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
33 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
34 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
35 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
36 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
37 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
38 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
39 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
40 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
41 */
42
43 #include "nspr.h"
44 #include "prnetdb.h"
45
46 #include "mozilla/Assertions.h"
47
48 extern "C" {
49 #include "nr_api.h"
50 #include "async_timer.h"
51 #include "nr_resolver.h"
52 #include "transport_addr.h"
53 }
54
55 #include "nriceresolverfake.h"
56 #include "nr_socket_prsock.h"
57
58 namespace mozilla {
59
NrIceResolverFake()60 NrIceResolverFake::NrIceResolverFake()
61 : vtbl_(new nr_resolver_vtbl),
62 addrs_(),
63 delay_ms_(100),
64 allocated_resolvers_(0) {
65 vtbl_->destroy = &NrIceResolverFake::destroy;
66 vtbl_->resolve = &NrIceResolverFake::resolve;
67 vtbl_->cancel = &NrIceResolverFake::cancel;
68 }
69
~NrIceResolverFake()70 NrIceResolverFake::~NrIceResolverFake() {
71 MOZ_ASSERT(allocated_resolvers_ == 0);
72 delete vtbl_;
73 }
74
AllocateResolver()75 nr_resolver* NrIceResolverFake::AllocateResolver() {
76 nr_resolver* resolver;
77
78 int r = nr_resolver_create_int((void*)this, vtbl_, &resolver);
79 MOZ_ASSERT(!r);
80 if (r) return nullptr;
81
82 ++allocated_resolvers_;
83
84 return resolver;
85 }
86
DestroyResolver()87 void NrIceResolverFake::DestroyResolver() { --allocated_resolvers_; }
88
destroy(void ** objp)89 int NrIceResolverFake::destroy(void** objp) {
90 if (!objp || !*objp) return 0;
91
92 NrIceResolverFake* fake = static_cast<NrIceResolverFake*>(*objp);
93 *objp = nullptr;
94
95 fake->DestroyResolver();
96
97 return 0;
98 }
99
resolve(void * obj,nr_resolver_resource * resource,int (* cb)(void * cb_arg,nr_transport_addr * addr),void * cb_arg,void ** handle)100 int NrIceResolverFake::resolve(void* obj, nr_resolver_resource* resource,
101 int (*cb)(void* cb_arg, nr_transport_addr* addr),
102 void* cb_arg, void** handle) {
103 int r, _status;
104
105 MOZ_ASSERT(obj);
106 NrIceResolverFake* fake = static_cast<NrIceResolverFake*>(obj);
107
108 MOZ_ASSERT(fake->allocated_resolvers_ > 0);
109
110 PendingResolution* pending = new PendingResolution(
111 fake, resource->domain_name, resource->port ? resource->port : 3478,
112 resource->transport_protocol ? resource->transport_protocol : IPPROTO_UDP,
113 resource->address_family, cb, cb_arg);
114
115 if ((r = NR_ASYNC_TIMER_SET(fake->delay_ms_, NrIceResolverFake::resolve_cb,
116 (void*)pending, &pending->timer_handle_))) {
117 delete pending;
118 ABORT(r);
119 }
120 *handle = pending;
121
122 _status = 0;
123 abort:
124 return (_status);
125 }
126
resolve_cb(NR_SOCKET s,int how,void * cb_arg)127 void NrIceResolverFake::resolve_cb(NR_SOCKET s, int how, void* cb_arg) {
128 MOZ_ASSERT(cb_arg);
129 PendingResolution* pending = static_cast<PendingResolution*>(cb_arg);
130
131 const PRNetAddr* addr =
132 pending->resolver_->Resolve(pending->hostname_, pending->address_family_);
133
134 if (addr) {
135 nr_transport_addr transport_addr;
136
137 int r = nr_praddr_to_transport_addr(addr, &transport_addr,
138 pending->transport_, 0);
139 MOZ_ASSERT(!r);
140 if (r) goto abort;
141
142 r = nr_transport_addr_set_port(&transport_addr, pending->port_);
143 MOZ_ASSERT(!r);
144 if (r) goto abort;
145
146 /* Fill in the address string */
147 r = nr_transport_addr_fmt_addr_string(&transport_addr);
148 MOZ_ASSERT(!r);
149 if (r) goto abort;
150
151 pending->cb_(pending->cb_arg_, &transport_addr);
152 delete pending;
153 return;
154 }
155
156 abort:
157 // Resolution failed.
158 pending->cb_(pending->cb_arg_, nullptr);
159
160 delete pending;
161 }
162
cancel(void * obj,void * handle)163 int NrIceResolverFake::cancel(void* obj, void* handle) {
164 MOZ_ASSERT(obj);
165 MOZ_ASSERT(static_cast<NrIceResolverFake*>(obj)->allocated_resolvers_ > 0);
166
167 PendingResolution* pending = static_cast<PendingResolution*>(handle);
168
169 NR_async_timer_cancel(pending->timer_handle_);
170 delete pending;
171
172 return (0);
173 }
174
175 } // End of namespace mozilla
176