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
|
/*
* Copyright (c) 2017-2019 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <errno.h>
#include <src/config.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <src/core/connectionTable.h>
#include <src/core/forwarder.h>
#include <src/io/listener.h>
#include <src/io/streamConnection.h>
#include <src/io/tcpListener.h>
#include <parc/algol/parc_Memory.h>
#include <parc/algol/parc_Network.h>
#include <parc/assert/parc_Assert.h>
typedef struct tcp_listener {
Forwarder *forwarder;
Logger *logger;
PARCEventSocket *listener;
Address *localAddress;
unsigned id;
// is the localAddress as 127.0.0.0 address?
bool isLocalAddressLocal;
} _TcpListener;
static void _tcpListener_Destroy(_TcpListener **listenerPtr);
static void _tcpListener_OpsDestroy(ListenerOps **listenerOpsPtr);
static unsigned _tcpListener_OpsGetInterfaceIndex(const ListenerOps *ops);
static const Address *_tcpListener_OpsGetListenAddress(const ListenerOps *ops);
static EncapType _tcpListener_OpsGetEncapType(const ListenerOps *ops);
static ListenerOps _tcpTemplate = {
.context = NULL,
.destroy = &_tcpListener_OpsDestroy,
.getInterfaceIndex = &_tcpListener_OpsGetInterfaceIndex,
.getListenAddress = &_tcpListener_OpsGetListenAddress,
.getEncapType = &_tcpListener_OpsGetEncapType,
.getSocket = NULL};
// STREAM daemon listener callback
static void _tcpListener_Listen(int, struct sockaddr *, int socklen,
void *tcpVoid);
ListenerOps *tcpListener_CreateInet6(Forwarder *forwarder,
struct sockaddr_in6 sin6) {
_TcpListener *tcp = parcMemory_AllocateAndClear(sizeof(_TcpListener));
parcAssertNotNull(tcp, "parcMemory_AllocateAndClear(%zu) returned NULL",
sizeof(_TcpListener));
tcp->forwarder = forwarder;
tcp->logger = logger_Acquire(forwarder_GetLogger(forwarder));
tcp->listener = dispatcher_CreateListener(
forwarder_GetDispatcher(forwarder), _tcpListener_Listen, (void *)tcp, -1,
(struct sockaddr *)&sin6, sizeof(sin6));
if (tcp->listener == NULL) {
logger_Log(tcp->logger, LoggerFacility_IO, PARCLogLevel_Error, __func__,
"dispatcher_CreateListener failed to create listener (%d) %s",
errno, strerror(errno));
logger_Release(&tcp->logger);
parcMemory_Deallocate((void **)&tcp);
return NULL;
}
tcp->localAddress = addressCreateFromInet6(&sin6);
tcp->id = forwarder_GetNextConnectionId(forwarder);
tcp->isLocalAddressLocal =
parcNetwork_IsSocketLocal((struct sockaddr *)&sin6);
ListenerOps *ops = parcMemory_AllocateAndClear(sizeof(ListenerOps));
parcAssertNotNull(ops, "parcMemory_AllocateAndClear(%zu) returned NULL",
sizeof(ListenerOps));
memcpy(ops, &_tcpTemplate, sizeof(ListenerOps));
ops->context = tcp;
if (logger_IsLoggable(tcp->logger, LoggerFacility_IO, PARCLogLevel_Debug)) {
char *str = addressToString(tcp->localAddress);
logger_Log(tcp->logger, LoggerFacility_IO, PARCLogLevel_Debug, __func__,
"TcpListener %p created for address %s (isLocal %d)",
(void *)tcp, str, tcp->isLocalAddressLocal);
parcMemory_Deallocate((void **)&str);
}
return ops;
}
ListenerOps *tcpListener_CreateInet(Forwarder *forwarder,
struct sockaddr_in sin) {
_TcpListener *tcp = parcMemory_AllocateAndClear(sizeof(_TcpListener));
parcAssertNotNull(tcp, "parcMemory_AllocateAndClear(%zu) returned NULL",
sizeof(_TcpListener));
tcp->forwarder = forwarder;
tcp->logger = logger_Acquire(forwarder_GetLogger(forwarder));
tcp->listener = dispatcher_CreateListener(
forwarder_GetDispatcher(forwarder), _tcpListener_Listen, (void *)tcp, -1,
(struct sockaddr *)&sin, sizeof(sin));
if (tcp->listener == NULL) {
logger_Log(tcp->logger, LoggerFacility_IO, PARCLogLevel_Error, __func__,
"dispatcher_CreateListener failed to create listener (%d) %s",
errno, strerror(errno));
logger_Release(&tcp->logger);
parcMemory_Deallocate((void **)&tcp);
return NULL;
}
tcp->localAddress = addressCreateFromInet(&sin);
tcp->id = forwarder_GetNextConnectionId(forwarder);
tcp->isLocalAddressLocal = parcNetwork_IsSocketLocal((struct sockaddr *)&sin);
ListenerOps *ops = parcMemory_AllocateAndClear(sizeof(ListenerOps));
parcAssertNotNull(ops, "parcMemory_AllocateAndClear(%zu) returned NULL",
sizeof(ListenerOps));
memcpy(ops, &_tcpTemplate, sizeof(ListenerOps));
ops->context = tcp;
if (logger_IsLoggable(tcp->logger, LoggerFacility_IO, PARCLogLevel_Debug)) {
char *str = addressToString(tcp->localAddress);
logger_Log(tcp->logger, LoggerFacility_IO, PARCLogLevel_Debug, __func__,
"TcpListener %p created for address %s (isLocal %d)",
(void *)tcp, str, tcp->isLocalAddressLocal);
parcMemory_Deallocate((void **)&str);
}
return ops;
}
static void _tcpListener_Destroy(_TcpListener **listenerPtr) {
parcAssertNotNull(listenerPtr, "Parameter must be non-null double pointer");
parcAssertNotNull(*listenerPtr,
"Parameter must derefernce to non-null pointer");
_TcpListener *tcp = *listenerPtr;
if (logger_IsLoggable(tcp->logger, LoggerFacility_IO, PARCLogLevel_Debug)) {
char *str = addressToString(tcp->localAddress);
logger_Log(tcp->logger, LoggerFacility_IO, PARCLogLevel_Debug, __func__,
"TcpListener %p destroyed", (void *)tcp);
parcMemory_Deallocate((void **)&str);
}
logger_Release(&tcp->logger);
dispatcher_DestroyListener(forwarder_GetDispatcher(tcp->forwarder),
&tcp->listener);
addressDestroy(&tcp->localAddress);
parcMemory_Deallocate((void **)&tcp);
*listenerPtr = NULL;
}
// ==================================================
static void _tcpListener_Listen(int fd, struct sockaddr *sa, int socklen,
void *tcpVoid) {
_TcpListener *tcp = (_TcpListener *)tcpVoid;
Address *remote;
switch (sa->sa_family) {
case AF_INET:
remote = addressCreateFromInet((struct sockaddr_in *)sa);
break;
case AF_INET6:
remote = addressCreateFromInet6((struct sockaddr_in6 *)sa);
break;
default:
parcTrapIllegalValue(sa, "Expected INET or INET6, got %d", sa->sa_family);
abort();
}
AddressPair *pair = addressPair_Create(tcp->localAddress, remote);
IoOperations *ops = streamConnection_AcceptConnection(
tcp->forwarder, fd, pair, tcp->isLocalAddressLocal);
Connection *conn = connection_Create(ops);
connectionTable_Add(forwarder_GetConnectionTable(tcp->forwarder), conn);
if (logger_IsLoggable(tcp->logger, LoggerFacility_IO, PARCLogLevel_Debug)) {
logger_Log(tcp->logger, LoggerFacility_IO, PARCLogLevel_Debug, __func__,
"TcpListener %p listen started", (void *)tcp);
}
addressDestroy(&remote);
}
static void _tcpListener_OpsDestroy(ListenerOps **listenerOpsPtr) {
ListenerOps *ops = *listenerOpsPtr;
_TcpListener *tcp = (_TcpListener *)ops->context;
_tcpListener_Destroy(&tcp);
parcMemory_Deallocate((void **)&ops);
*listenerOpsPtr = NULL;
}
static unsigned _tcpListener_OpsGetInterfaceIndex(const ListenerOps *ops) {
_TcpListener *tcp = (_TcpListener *)ops->context;
return tcp->id;
}
static const Address *_tcpListener_OpsGetListenAddress(const ListenerOps *ops) {
_TcpListener *tcp = (_TcpListener *)ops->context;
return tcp->localAddress;
}
static EncapType _tcpListener_OpsGetEncapType(const ListenerOps *ops) {
return ENCAP_TCP;
}
|
