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
|
#include <QtCore>
#include "DownloadClient.h"
#include "Utility.h"
DownloadClient::DownloadClient(): isDownloading(false), current(NULL), currentId(-1)
{
}
DownloadClient::DownloadClient(QString addr):
SslClient(addr), isDownloading(false), current(NULL), currentId(-1)
{
}
void DownloadClient::Download(const string &filename)
{
pair<string, string> file(filename, "0");
vector<pair<string, string> > fileList;
fileList.push_back(file);
Download(fileList);
}
void DownloadClient::Download(const pair<string, string> &file)
{
vector<pair<string, string> > fileList;
fileList.push_back(file);
Download(fileList);
}
void DownloadClient::Download(const vector<pair<string, string> > &fileList)
{
if (server.isEmpty())
{
Logger::Error("Server address isn't set! Aborting.\n");
return;
}
if (isDownloading)
{
Logger::Error("Previous downloading process wasn't finished! Aborting.\n");
return;
}
connect(this, SIGNAL(ReplyRecieved(SslClient::RequestType&, QByteArray&)),
this, SLOT(FileDataRecieved(SslClient::RequestType&, QByteArray&)));
isDownloading = true;
files = fileList;
for(unsigned i = 0; i < files.size(); i++)
{
status[files[i].first] = 0;
}
DoDownload();
}
void DownloadClient::DoDownload()
{
currentId++;
if (currentId < (int)files.size())
{
pair<string, string> file = files[currentId];
if (status[file.first] > MAX_DOWNLOAD_ATTEMPTS)
{
Logger::Warn("Maximum number of %d download retries exceeded. Skipping %s\n",
MAX_DOWNLOAD_ATTEMPTS, file.first.c_str());
DoDownload();
return;
}
QString filename = QString::fromLocal8Bit(file.first.c_str());
string md5 = file.second;
current = new QFile(filename);
if (! current->open(QIODevice::WriteOnly | QIODevice::Unbuffered))
{
Logger::Info("Can't open file: path isn't available\n");
DoDownload();
return;
}
Logger::Info("Downloading file (%d of %u): %s\n", currentId + 1, files.size(), file.first.c_str());
status[file.first]++;
SendFileRequest(file.first);
}
else
{
Logger::Info("All files have been downloaded.\n");
isDownloading = false;
emit downloadFinished();
}
}
void DownloadClient::FileDataRecieved(SslClient::RequestType &type, QByteArray &data)
{
Logger::Trace("Recieved file data: %u bytes\n", data.size());
if (type != RegularFile)
{
Logger::Error("Invalid reply recieved: %x\n", type);
return;
}
if ((current == NULL) || (! current->isOpen()))
{
Logger::Error("File isn't open or in invalid state.\n");
return;
}
if (data.size() != 0)
{
current->write(data);
current->waitForBytesWritten(-1);
}
else
{
Logger::Trace("Last (empty) packet recieved\n");
current->close();
// check file's md5 hash value
pair<string, string> file = files[currentId];
QString md5string = QString::fromLocal8Bit(file.second.c_str());
QString filename = QString::fromLocal8Bit(file.first.c_str());
QByteArray md5 = md5_sum(filename);
if (md5 == md5string)
{
Logger::Trace("File %s was downloaded correctly!\n", filename.toStdString().c_str());
if (QString::compare(filename, QString("client.bin.tmp")) == 0)
{
Logger::Trace("Copying client.bin.tmp => client.bin.latest\n");
current->copy(QString("client.bin.latest"));
}
}
else
{
Logger::Error("File %s was downloaded incorrectly! Removing and trying again!\n", filename.toStdString().c_str());
current->remove();
currentId--;
}
// free pointer to the current file
delete current;
current = NULL;
// proceed to the next file
DoDownload();
}
}
|
