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
|
#ifndef _sys_ssl_SslIO
#define _sys_ssl_SslIO
/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 "qpid/sys/DispatchHandle.h"
#include "qpid/sys/SecuritySettings.h"
#include <boost/function.hpp>
#include <deque>
namespace qpid {
namespace sys {
namespace ssl {
class SslSocket;
/*
* Asynchronous ssl acceptor: accepts connections then does a callback
* with the accepted fd
*/
class SslAcceptor {
public:
typedef boost::function1<void, const SslSocket&> Callback;
private:
Callback acceptedCallback;
qpid::sys::DispatchHandle handle;
const SslSocket& socket;
public:
SslAcceptor(const SslSocket& s, Callback callback);
~SslAcceptor();
void start(qpid::sys::Poller::shared_ptr poller);
private:
void readable(qpid::sys::DispatchHandle& handle);
};
/*
* Asynchronous ssl connector: starts the process of initiating a
* connection and invokes a callback when completed or failed.
*/
class SslConnector : private qpid::sys::DispatchHandle {
public:
typedef boost::function1<void, const SslSocket&> ConnectedCallback;
typedef boost::function2<void, int, std::string> FailedCallback;
private:
ConnectedCallback connCallback;
FailedCallback failCallback;
const SslSocket& socket;
public:
SslConnector(const SslSocket& socket,
Poller::shared_ptr poller,
std::string hostname,
uint16_t port,
ConnectedCallback connCb,
FailedCallback failCb = 0);
private:
void connComplete(DispatchHandle& handle);
void failure(int, std::string);
};
struct SslIOBufferBase {
char* const bytes;
const int32_t byteCount;
int32_t dataStart;
int32_t dataCount;
SslIOBufferBase(char* const b, const int32_t s) :
bytes(b),
byteCount(s),
dataStart(0),
dataCount(0)
{}
virtual ~SslIOBufferBase()
{}
};
/*
* Asychronous reader/writer:
* Reader accepts buffers to read into; reads into the provided buffers
* and then does a callback with the buffer and amount read. Optionally it can callback
* when there is something to read but no buffer to read it into.
*
* Writer accepts a buffer and queues it for writing; can also be given
* a callback for when writing is "idle" (ie fd is writable, but nothing to write)
*
* The class is implemented in terms of DispatchHandle to allow it to be deleted by deleting
* the contained DispatchHandle
*/
class SslIO : private qpid::sys::DispatchHandle {
public:
typedef SslIOBufferBase BufferBase;
typedef boost::function2<void, SslIO&, BufferBase*> ReadCallback;
typedef boost::function1<void, SslIO&> EofCallback;
typedef boost::function1<void, SslIO&> DisconnectCallback;
typedef boost::function2<void, SslIO&, const SslSocket&> ClosedCallback;
typedef boost::function1<void, SslIO&> BuffersEmptyCallback;
typedef boost::function1<void, SslIO&> IdleCallback;
private:
ReadCallback readCallback;
EofCallback eofCallback;
DisconnectCallback disCallback;
ClosedCallback closedCallback;
BuffersEmptyCallback emptyCallback;
IdleCallback idleCallback;
const SslSocket& socket;
std::deque<BufferBase*> bufferQueue;
std::deque<BufferBase*> writeQueue;
bool queuedClose;
/**
* This flag is used to detect and handle concurrency between
* calls to notifyPendingWrite() (which can be made from any thread) and
* the execution of the writeable() method (which is always on the
* thread processing this handle.
*/
volatile bool writePending;
public:
SslIO(const SslSocket& s,
ReadCallback rCb, EofCallback eofCb, DisconnectCallback disCb,
ClosedCallback cCb = 0, BuffersEmptyCallback eCb = 0, IdleCallback iCb = 0);
void queueForDeletion();
void start(qpid::sys::Poller::shared_ptr poller);
void queueReadBuffer(BufferBase* buff);
void unread(BufferBase* buff);
void queueWrite(BufferBase* buff);
void notifyPendingWrite();
void queueWriteClose();
bool writeQueueEmpty() { return writeQueue.empty(); }
BufferBase* getQueuedBuffer();
qpid::sys::SecuritySettings getSecuritySettings();
private:
~SslIO();
void readable(qpid::sys::DispatchHandle& handle);
void writeable(qpid::sys::DispatchHandle& handle);
void disconnected(qpid::sys::DispatchHandle& handle);
void close(qpid::sys::DispatchHandle& handle);
};
}}}
#endif // _sys_ssl_SslIO
|
