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
|
/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2006 Tatsuhiro Tsujikawa
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#ifndef _D_ABSTRACT_COMMAND_H_
#define _D_ABSTRACT_COMMAND_H_
#include "Command.h"
#include "SharedHandle.h"
#include "TimeA2.h"
#include "RequestGroupAware.h"
namespace aria2 {
class Request;
class DownloadEngine;
class RequestGroup;
class Segment;
class Exception;
class SocketCore;
#ifdef ENABLE_ASYNC_DNS
class AsyncNameResolver;
#endif // ENABLE_ASYNC_DNS
class AbstractCommand : public Command, public RequestGroupAware {
private:
Time checkPoint;
time_t timeout;
protected:
SharedHandle<Request> req;
DownloadEngine* e;
SharedHandle<SocketCore> socket;
std::deque<SharedHandle<Segment> > _segments;
#ifdef ENABLE_ASYNC_DNS
SharedHandle<AsyncNameResolver> _asyncNameResolver;
bool isAsyncNameResolverInitialized() const;
void initAsyncNameResolver(const std::string& hostname);
bool asyncResolveHostname();
const std::deque<std::string>& getResolvedAddresses();
#endif // ENABLE_ASYNC_DNS
void tryReserved();
virtual bool prepareForRetry(time_t wait);
virtual void onAbort();
virtual bool executeInternal() = 0;
void setReadCheckSocket(const SharedHandle<SocketCore>& socket);
void setWriteCheckSocket(const SharedHandle<SocketCore>& socket);
void disableReadCheckSocket();
void disableWriteCheckSocket();
/**
* If pred == true, calls setReadCheckSocket(socket). Otherwise, calls
* disableReadCheckSocket().
*/
void setReadCheckSocketIf(const SharedHandle<SocketCore>& socket, bool pred);
/**
* If pred == true, calls setWriteCheckSocket(socket). Otherwise, calls
* disableWriteCheckSocket().
*/
void setWriteCheckSocketIf(const SharedHandle<SocketCore>& socket, bool pred);
void setTimeout(time_t timeout) { this->timeout = timeout; }
void prepareForNextAction(Command* nextCommand = 0);
void checkIfConnectionEstablished(const SharedHandle<SocketCore>& socket);
private:
bool checkSocketIsReadable;
bool checkSocketIsWritable;
SharedHandle<SocketCore> readCheckTarget;
SharedHandle<SocketCore> writeCheckTarget;
bool nameResolverCheck;
#ifdef ENABLE_ASYNC_DNS
void setNameResolverCheck(const SharedHandle<AsyncNameResolver>& resolver);
void disableNameResolverCheck(const SharedHandle<AsyncNameResolver>& resolver);
bool nameResolveFinished() const;
#endif // ENABLE_ASYNC_DNS
public:
AbstractCommand(int32_t cuid, const SharedHandle<Request>& req,
RequestGroup* requestGroup, DownloadEngine* e,
const SharedHandle<SocketCore>& s = SharedHandle<SocketCore>());
virtual ~AbstractCommand();
bool execute();
};
} // namespace aria2
#endif // _D_ABSTRACT_COMMAND_H_
|
