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
|
/* Copyright 2013 MultiMC Contributors
*
* 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 "MultiMC.h"
#include "CacheDownload.h"
#include <pathutils.h>
#include <QCryptographicHash>
#include <QFileInfo>
#include <QDateTime>
#include "logger/QsLog.h"
CacheDownload::CacheDownload(QUrl url, MetaEntryPtr entry)
: NetAction(), md5sum(QCryptographicHash::Md5)
{
m_url = url;
m_entry = entry;
m_target_path = entry->getFullPath();
m_status = Job_NotStarted;
}
void CacheDownload::start()
{
if (!m_entry->stale)
{
emit succeeded(index_within_job);
return;
}
m_output_file.setFileName(m_target_path);
// if there already is a file and md5 checking is in effect and it can be opened
if (!ensureFilePathExists(m_target_path))
{
emit failed(index_within_job);
return;
}
QLOG_INFO() << "Downloading " << m_url.toString();
QNetworkRequest request(m_url);
if (m_entry->remote_changed_timestamp.size())
request.setRawHeader(QString("If-Modified-Since").toLatin1(),
m_entry->remote_changed_timestamp.toLatin1());
if (m_entry->etag.size())
request.setRawHeader(QString("If-None-Match").toLatin1(), m_entry->etag.toLatin1());
request.setHeader(QNetworkRequest::UserAgentHeader, "MultiMC/5.0 (Cached)");
auto worker = MMC->qnam();
QNetworkReply *rep = worker->get(request);
m_reply = std::shared_ptr<QNetworkReply>(rep);
connect(rep, SIGNAL(downloadProgress(qint64, qint64)),
SLOT(downloadProgress(qint64, qint64)));
connect(rep, SIGNAL(finished()), SLOT(downloadFinished()));
connect(rep, SIGNAL(error(QNetworkReply::NetworkError)),
SLOT(downloadError(QNetworkReply::NetworkError)));
connect(rep, SIGNAL(readyRead()), SLOT(downloadReadyRead()));
}
void CacheDownload::downloadProgress(qint64 bytesReceived, qint64 bytesTotal)
{
emit progress(index_within_job, bytesReceived, bytesTotal);
}
void CacheDownload::downloadError(QNetworkReply::NetworkError error)
{
// error happened during download.
QLOG_ERROR() << "Failed" << m_url.toString() << "with reason" << error;
m_status = Job_Failed;
}
void CacheDownload::downloadFinished()
{
// if the download succeeded
if (m_status != Job_Failed)
{
// nothing went wrong...
m_status = Job_Finished;
if (m_output_file.isOpen())
{
// save the data to the downloadable if we aren't saving to file
m_output_file.close();
m_entry->md5sum = md5sum.result().toHex().constData();
}
else
{
if (m_output_file.open(QIODevice::ReadOnly))
{
m_entry->md5sum =
QCryptographicHash::hash(m_output_file.readAll(), QCryptographicHash::Md5)
.toHex()
.constData();
m_output_file.close();
}
}
QFileInfo output_file_info(m_target_path);
m_entry->etag = m_reply->rawHeader("ETag").constData();
if (m_reply->hasRawHeader("Last-Modified"))
{
m_entry->remote_changed_timestamp = m_reply->rawHeader("Last-Modified").constData();
}
m_entry->local_changed_timestamp =
output_file_info.lastModified().toUTC().toMSecsSinceEpoch();
m_entry->stale = false;
MMC->metacache()->updateEntry(m_entry);
m_reply.reset();
emit succeeded(index_within_job);
return;
}
// else the download failed
else
{
m_output_file.close();
m_output_file.remove();
m_reply.reset();
emit failed(index_within_job);
return;
}
}
void CacheDownload::downloadReadyRead()
{
if (!m_output_file.isOpen())
{
if (!m_output_file.open(QIODevice::WriteOnly))
{
/*
* Can't open the file... the job failed
*/
m_reply->abort();
emit failed(index_within_job);
return;
}
}
QByteArray ba = m_reply->readAll();
md5sum.addData(ba);
m_output_file.write(ba);
}
|
