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
|
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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.
*
*/
#include "backends/cloud/downloadrequest.h"
#include "backends/networking/curl/connectionmanager.h"
#include "common/debug.h"
#include "common/textconsole.h"
namespace Cloud {
DownloadRequest::DownloadRequest(Storage *storage, Storage::BoolCallback callback, Networking::ErrorCallback ecb, Common::String remoteFileId, Common::DumpFile *dumpFile):
Request(nullptr, ecb), _boolCallback(callback), _localFile(dumpFile), _remoteFileId(remoteFileId), _storage(storage),
_remoteFileStream(nullptr), _workingRequest(nullptr), _ignoreCallback(false) {
start();
}
DownloadRequest::~DownloadRequest() {
_ignoreCallback = true;
if (_workingRequest) _workingRequest->finish();
delete _boolCallback;
delete _localFile;
}
void DownloadRequest::start() {
_ignoreCallback = true;
if (_workingRequest) _workingRequest->finish();
_remoteFileStream = nullptr;
//TODO: reopen DumpFile
_ignoreCallback = false;
_workingRequest = _storage->streamFileById(
_remoteFileId,
new Common::Callback<DownloadRequest, Networking::NetworkReadStreamResponse>(this, &DownloadRequest::streamCallback),
new Common::Callback<DownloadRequest, Networking::ErrorResponse>(this, &DownloadRequest::streamErrorCallback)
);
}
void DownloadRequest::streamCallback(Networking::NetworkReadStreamResponse response) {
_workingRequest = nullptr;
if (_ignoreCallback) return;
_remoteFileStream = (Networking::NetworkReadStream *)response.value;
}
void DownloadRequest::streamErrorCallback(Networking::ErrorResponse error) {
_workingRequest = nullptr;
if (_ignoreCallback) return;
finishError(error);
}
void DownloadRequest::handle() {
if (!_localFile) {
warning("DownloadRequest: no file to write");
finishError(Networking::ErrorResponse(this, false, true, "", -1));
return;
}
if (!_localFile->isOpen()) {
warning("DownloadRequest: failed to open file to write");
finishError(Networking::ErrorResponse(this, false, true, "", -1));
return;
}
if (!_remoteFileStream) {
//waiting for callback
return;
}
const int kBufSize = 640 * 1024; //640 KB is enough to everyone?..
char buf[kBufSize];
uint32 readBytes = _remoteFileStream->read(buf, kBufSize);
if (readBytes != 0)
if (_localFile->write(buf, readBytes) != readBytes) {
warning("DownloadRequest: unable to write all received bytes into output file");
finishError(Networking::ErrorResponse(this, false, true, "", -1));
return;
}
if (_remoteFileStream->eos()) {
if (_remoteFileStream->httpResponseCode() != 200) {
warning("HTTP response code is not 200 OK (it's %ld)", _remoteFileStream->httpResponseCode());
//TODO: do something about it actually
}
finishDownload(_remoteFileStream->httpResponseCode() == 200);
_localFile->close(); //yes, I know it's closed automatically in ~DumpFile()
}
}
void DownloadRequest::restart() {
warning("DownloadRequest: can't restart as there are no means to reopen DumpFile");
finishError(Networking::ErrorResponse(this, false, true, "", -1));
//start();
}
void DownloadRequest::finishDownload(bool success) {
Request::finishSuccess();
if (_boolCallback) (*_boolCallback)(Storage::BoolResponse(this, success));
}
void DownloadRequest::finishError(Networking::ErrorResponse error) {
if (_localFile) _localFile->close();
Request::finishError(error);
}
} // End of namespace Cloud
|
