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
|
commit 5107e4b7a050d7533f44801f5f5f5694203fd3b5
Author: Joris Guisson <joris.guisson@gmail.com>
Date: Wed Jul 11 20:16:43 2012 +0200
Make sure all trackers are used of a magnet link
BUG: 302997
BUG: 303269
diff --git a/src/magnet/magnetlink.cpp b/src/magnet/magnetlink.cpp
index 525bfa5..43168dc 100644
--- a/src/magnet/magnetlink.cpp
+++ b/src/magnet/magnetlink.cpp
@@ -19,13 +19,14 @@
***************************************************************************/
#include "magnetlink.h"
+#include <QUrl>
#include <QStringList>
#include <util/log.h>
#include <util/error.h>
namespace bt
{
-
+
MagnetLink::MagnetLink()
{
}
@@ -44,7 +45,7 @@ namespace bt
{
parse(mlink);
}
-
+
MagnetLink::~MagnetLink()
{
}
@@ -64,83 +65,114 @@ namespace bt
{
return info_hash == mlink.infoHash();
}
-
+
+ static KUrl::List GetTrackers(const KUrl & url)
+ {
+ KUrl::List result;
+ const QString encoded_query = QString::fromLatin1(url.encodedQuery());
+ const QString item = QLatin1String("tr=");
+ if(encoded_query.length() <= 1)
+ return result;
+
+ const QStringList items = encoded_query.split(QString(QLatin1Char('&')), QString::SkipEmptyParts);
+ const int len = item.length();
+ for(QStringList::ConstIterator it = items.begin(); it != items.end(); ++it)
+ {
+ if((*it).startsWith(item))
+ {
+ if((*it).length() > len)
+ {
+ QString str = (*it).mid(len);
+ str.replace(QLatin1Char('+'), QLatin1Char(' ')); // + in queries means space.
+ result.push_back(QUrl::fromPercentEncoding(str.toLatin1()));
+ }
+ }
+ }
+
+ return result;
+ }
+
void MagnetLink::parse(const QString& mlink)
{
KUrl url(mlink);
- if (url.protocol() != "magnet")
+ if(url.protocol() != "magnet")
{
- Out(SYS_GEN|LOG_NOTICE) << "Invalid protocol of magnet link "
- << mlink << endl;
+ Out(SYS_GEN | LOG_NOTICE) << "Invalid protocol of magnet link "
+ << mlink << endl;
return;
}
-
+
torrent_url = url.queryItem("to");
//magnet://description-of-content.btih.HASH(-HASH)*.dht/path/file?x.pt=&x.to=
// TODO automatically select these files and prefetches from here
path = url.queryItem("pt");
- if ( path.isEmpty() && url.hasPath() && url.path() != "/" ) {
+ if(path.isEmpty() && url.hasPath() && url.path() != "/")
+ {
// TODO find out why RemoveTrailingSlash does not work
path = url.path(KUrl::RemoveTrailingSlash).remove(QRegExp("^/"));
}
QString xt = url.queryItem("xt");
- if ( xt.isEmpty()
- || !xt.startsWith("urn:btih:") ) {
+ if(xt.isEmpty()
+ || !xt.startsWith("urn:btih:"))
+ {
QRegExp btihHash("([^\\.]+).btih");
- if ( btihHash.indexIn(url.host()) != -1 ) {
+ if(btihHash.indexIn(url.host()) != -1)
+ {
QString primaryHash = btihHash.cap(1).split("-")[0];
- xt = "urn:btih:"+primaryHash;
- } else {
- Out(SYS_GEN|LOG_NOTICE) << "No hash found in magnet link "
- << mlink << endl;
+ xt = "urn:btih:" + primaryHash;
+ }
+ else
+ {
+ Out(SYS_GEN | LOG_NOTICE) << "No hash found in magnet link "
+ << mlink << endl;
return;
}
}
-
+
QString ih = xt.mid(9);
- if (ih.length() != 40 && ih.length() != 32)
+ if(ih.length() != 40 && ih.length() != 32)
{
- Out(SYS_GEN|LOG_NOTICE) << "Hash has not valid length in magnet link "
- << mlink << endl;
+ Out(SYS_GEN | LOG_NOTICE) << "Hash has not valid length in magnet link "
+ << mlink << endl;
return;
}
-
+
try
{
- if (ih.length() == 32)
+ if(ih.length() == 32)
ih = base32ToHexString(ih);
Uint8 hash[20];
- memset(hash,0,20);
- for (int i = 0;i < 20;i++)
+ memset(hash, 0, 20);
+ for(int i = 0; i < 20; i++)
{
- Uint8 low = charToHex(ih[2*i + 1]);
- Uint8 high = charToHex(ih[2*i]);
+ Uint8 low = charToHex(ih[2 * i + 1]);
+ Uint8 high = charToHex(ih[2 * i]);
hash[i] = (high << 4) | low;
}
-
+
info_hash = SHA1Hash(hash);
- tracker_urls = url.queryItem("tr").split(",");
+ tracker_urls = GetTrackers(url);
name = url.queryItem("dn");
magnet_string = mlink;
}
- catch (...)
+ catch(...)
{
- Out(SYS_GEN|LOG_NOTICE) << "Invalid magnet link " << mlink << endl;
+ Out(SYS_GEN | LOG_NOTICE) << "Invalid magnet link " << mlink << endl;
}
}
-
+
Uint8 MagnetLink::charToHex(const QChar& ch)
{
- if (ch.isDigit())
+ if(ch.isDigit())
return ch.digitValue();
-
- if (!ch.isLetter())
+
+ if(!ch.isLetter())
throw bt::Error("Invalid char");
-
- if (ch.isLower())
+
+ if(ch.isLower())
return 10 + ch.toAscii() - 'a';
else
return 10 + ch.toAscii() - 'A';
@@ -155,28 +187,28 @@ namespace bt
QString str = s.toUpper();
// 32 base32 chars -> 40 hex chars
// 4 base32 chars -> 5 hex chars
- for (int i = 0; i < 8; i++)
+ for(int i = 0; i < 8; i++)
{
part = 0;
- for (int j = 0; j < 4; j++)
+ for(int j = 0; j < 4; j++)
{
- ch = str[i*4 + j];
- if (ch.isDigit() && (ch.digitValue() < 2 || ch.digitValue() > 7))
+ ch = str[i * 4 + j];
+ if(ch.isDigit() && (ch.digitValue() < 2 || ch.digitValue() > 7))
throw bt::Error("Invalid char");
- if (ch.isDigit())
- tmp = ch.digitValue() + 24;
+ if(ch.isDigit())
+ tmp = ch.digitValue() + 24;
else
tmp = ch.toAscii() - 'A';
- part = part + (tmp << 5*(3-j));
+ part = part + (tmp << 5 * (3 - j));
}
// part is a Uint32 with 20 bits (5 hex)
- for (int j = 0; j < 5; j++)
+ for(int j = 0; j < 5; j++)
{
- tmp = (part >> 4*(4-j)) & 0xf;
- if (tmp >= 10)
- ret.append(QChar((tmp-10) + 'a'));
+ tmp = (part >> 4 * (4 - j)) & 0xf;
+ if(tmp >= 10)
+ ret.append(QChar((tmp - 10) + 'a'));
else
ret.append(QChar(tmp + '0'));
}
|
