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
|
/*
* Copyright (c) 2010 Remko Tronçon
* Licensed under the GNU General Public License v3.
* See Documentation/Licenses/GPLv3.txt for more information.
*/
#include <Swiften/FileTransfer/IBBReceiveSession.h>
#include <boost/bind.hpp>
#include <Swiften/Base/Log.h>
#include <Swiften/Queries/IQRouter.h>
#include <Swiften/FileTransfer/IBBRequest.h>
#include <Swiften/FileTransfer/BytestreamException.h>
#include <Swiften/Queries/SetResponder.h>
#include <cassert>
namespace Swift {
class IBBReceiveSession::IBBResponder : public SetResponder<IBB> {
public:
IBBResponder(IBBReceiveSession* session, IQRouter* router) : SetResponder<IBB>(router), session(session), sequenceNumber(0), receivedSize(0) {
}
virtual bool handleSetRequest(const JID& from, const JID&, const std::string& id, IBB::ref ibb) {
if (from == session->from && ibb->getStreamID() == session->id) {
if (ibb->getAction() == IBB::Data) {
if (sequenceNumber == ibb->getSequenceNumber()) {
session->bytestream->write(ibb->getData());
receivedSize += ibb->getData().size();
sequenceNumber++;
sendResponse(from, id, IBB::ref());
if (receivedSize >= session->size) {
if (receivedSize > session->size) {
SWIFT_LOG(warning) << "Received more data than expected";
}
session->finish(boost::optional<FileTransferError>());
}
}
else {
SWIFT_LOG(warning) << "Received data out of order";
sendError(from, id, ErrorPayload::NotAcceptable, ErrorPayload::Cancel);
session->finish(FileTransferError(FileTransferError::ClosedError));
}
}
else if (ibb->getAction() == IBB::Open) {
SWIFT_LOG(debug) << "IBB open received";
sendResponse(from, id, IBB::ref());
}
else if (ibb->getAction() == IBB::Close) {
SWIFT_LOG(debug) << "IBB close received";
sendResponse(from, id, IBB::ref());
session->finish(FileTransferError(FileTransferError::ClosedError));
}
return true;
}
SWIFT_LOG(debug) << "wrong from/sessionID: " << from << " == " << session->from << " / " <<ibb->getStreamID() << " == " << session->id;
return false;
}
private:
IBBReceiveSession* session;
int sequenceNumber;
unsigned long long receivedSize;
};
IBBReceiveSession::IBBReceiveSession(
const std::string& id,
const JID& from,
const JID& to,
unsigned long long size,
boost::shared_ptr<WriteBytestream> bytestream,
IQRouter* router) :
id(id),
from(from),
to(to),
size(size),
bytestream(bytestream),
router(router),
active(false) {
assert(!id.empty());
assert(from.isValid());
responder = new IBBResponder(this, router);
}
IBBReceiveSession::~IBBReceiveSession() {
if (active) {
SWIFT_LOG(warning) << "Session still active";
}
delete responder;
}
void IBBReceiveSession::start() {
SWIFT_LOG(debug) << "receive session started";
active = true;
responder->start();
}
void IBBReceiveSession::stop() {
SWIFT_LOG(debug) << "receive session stopped";
responder->stop();
if (active) {
if (router->isAvailable()) {
IBBRequest::create(to, from, IBB::createIBBClose(id), router)->send();
}
finish(boost::optional<FileTransferError>());
}
}
void IBBReceiveSession::finish(boost::optional<FileTransferError> error) {
active = false;
onFinished(error);
}
}
|
Swift