summaryrefslogtreecommitdiffstats
path: root/libmultimc/src/gameupdatetask.cpp
blob: 2b2d0dedb5f41e8ab57941e8ab8cdb323547302f (plain)
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
234
235
236
237
238
239
240
241
242
243
/* 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 "gameupdatetask.h"

#include <QtNetwork>

#include <QFile>
#include <QFileInfo>
#include <QTextStream>
#include <QDataStream>

#include <QDebug>

#include "minecraftversionlist.h"

#include "pathutils.h"
#include "netutils.h"

GameUpdateTask::GameUpdateTask(const LoginResponse &response, Instance *inst, QObject *parent) :
	Task(parent), m_response(response)
{
	m_inst = inst;
	m_updateState = StateInit;
	m_currentDownload = 0;
}

void GameUpdateTask::executeTask()
{
	updateStatus();
	
	QNetworkAccessManager networkMgr;
	netMgr = &networkMgr;
	
	// Get a pointer to the version object that corresponds to the instance's version.
	MinecraftVersion *targetVersion = (MinecraftVersion *)MinecraftVersionList::getMainList().
			findVersion(m_inst->intendedVersion());
	Q_ASSERT_X(targetVersion != NULL, "game update", "instance's intended version is not an actual version");
	
	// Make directories
	QDir binDir(m_inst->binDir());
	if (!binDir.exists() && !binDir.mkpath("."))
	{
		error("Failed to create bin folder.");
		return;
	}
	
	
	
	/////////////////////////
	// BUILD DOWNLOAD LIST //
	/////////////////////////
	// Build a list of URLs that will need to be downloaded.
	
	setState(StateDetermineURLs);
	
	
	// Add the URL for minecraft.jar
	
	// This will be either 'minecraft' or the version number, depending on where
	// we're downloading from.
	QString jarFilename = "minecraft";
	
	if (targetVersion->isForNewLauncher())
		jarFilename = targetVersion->descriptor();
	
	QUrl mcJarURL = targetVersion->downloadURL() + jarFilename + ".jar";
	qDebug() << mcJarURL.toString();
	m_downloadList.append(FileToDownload::Create(mcJarURL, PathCombine(m_inst->minecraftDir(), "bin/minecraft.jar")));
	
	
	
	////////////////////
	// DOWNLOAD FILES //
	////////////////////
	setState(StateDownloadFiles);
	for (int i = 0; i < m_downloadList.length(); i++)
	{
		m_currentDownload = i;
		if (!downloadFile(m_downloadList[i]))
			return;
	}
	
	
	
	///////////////////
	// INSTALL FILES //
	///////////////////
	setState(StateInstall);
	
	// Nothing to do here yet
	
	
	
	//////////////
	// FINISHED //
	//////////////
	setState(StateFinished);
	emit gameUpdateComplete(m_response);
}

bool GameUpdateTask::downloadFile( const PtrFileToDownload file )
{
	setSubStatus("Downloading " + file->url().toString());
	QNetworkReply *reply = netMgr->get(QNetworkRequest(file->url()));
	
	this->connect(reply, SIGNAL(downloadProgress(qint64,qint64)),
				  SLOT(updateDownloadProgress(qint64,qint64)));
	
	NetUtils::waitForNetRequest(reply);
	
	if (reply->error() == QNetworkReply::NoError)
	{
        QString filePath = file->path();
		QFile outFile(filePath);
		if (outFile.exists() && !outFile.remove())
		{
			error("Can't delete old file " + file->path() + ": " + outFile.errorString());
			return false;
		}
		
		if (!outFile.open(QIODevice::WriteOnly))
		{
			error("Can't write to " + file->path() + ": " + outFile.errorString());
			return false;
		}
		
		outFile.write(reply->readAll());
		outFile.close();
	}
	else
	{
		error("Can't download " + file->url().toString() + ": " + reply->errorString());
		return false;
	}
	
	// TODO: Check file integrity after downloading.
	
	return true;
}

int GameUpdateTask::state() const
{
	return m_updateState;
}

void GameUpdateTask::setState(int state, bool resetSubStatus)
{
	m_updateState = state;
	if (resetSubStatus)
		setSubStatus("");
	else // We only need to update if we're not resetting substatus becasue setSubStatus updates status for us.
		updateStatus();
}

QString GameUpdateTask::subStatus() const
{
	return m_subStatusMsg;
}

void GameUpdateTask::setSubStatus(const QString &msg)
{
	m_subStatusMsg = msg;
	updateStatus();
}

QString GameUpdateTask::getStateMessage(int state)
{
	switch (state)
	{
	case StateInit:
		return "Initializing";
		
	case StateDetermineURLs:
		return "Determining files to download";
		
	case StateDownloadFiles:
		return "Downloading files";
		
	case StateInstall:
		return "Installing";
		
	case StateFinished:
		return "Finished";
	
	default:
		return "Downloading instance files";
	}
}

void GameUpdateTask::updateStatus()
{
	QString newStatus;
	
	newStatus = getStateMessage(state());
	if (!subStatus().isEmpty())
		newStatus += ": " + subStatus();
	else
		newStatus += "...";
	
	setStatus(newStatus);
}


void GameUpdateTask::error(const QString &msg)
{
	emit gameUpdateError(msg);
}

void GameUpdateTask::updateDownloadProgress(qint64 current, qint64 total)
{
	// The progress on the current file is current / total
	float currentDLProgress = (float) current / (float) total; // Cast ALL the values!
	
	// The overall progress is (current progress + files downloaded) / total files to download
	float overallDLProgress = ((currentDLProgress + m_currentDownload) / (float) m_downloadList.length());
	
	// Multiply by 100 to make it a percentage.
	setProgress((int)(overallDLProgress * 100));
}

PtrFileToDownload FileToDownload::Create(const QUrl &url, const QString &path, QObject *parent)
{
	return PtrFileToDownload(new FileToDownload (url, path, parent));
}

FileToDownload::FileToDownload(const QUrl &url, const QString &path, QObject *parent) : 
	QObject(parent), m_dlURL(url), m_dlPath(path)
{
	
}