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View Code? Open in Web Editor NEWRakNet is a cross platform, open source, C++ networking engine for game programmers.
License: Other
RakNet is a cross platform, open source, C++ networking engine for game programmers.
License: Other
The only way to compile under cmake and MinGW was editing manually some files, including source code.
I followed this tutorial on-line : http://www.dinomage.com/2012/06/basic-networking-with-raknet/
EDIT: sorry i followed this guide http://itessays.com/other-lanuage-development-technology/how-to-use-qt-creator-ide-compiler-compile-raknet-by-mingw.html
Regards.
Code mostly compiles cleanly on Linux, but there are a number of test functions that return constant strings using char *.
I thought this was fixed ages ago.
Any reason why?
Raknet uses Diffie-Hellman key agreement protocol to do key exchange with a precondition that the long-term server public key is given to clients in some secured way(possibly hard-coded in executive).
PS. the public key i refer to has nothing to do with RSA. Some possible bugs in connect() function makes it very vulnerable to the MITM attacks, the explanations are shown below:
in function KeyAgreementInitiator::GenerateChallenge()
// A = client public key,a = client private key
GenerateKey(math, csprng, a);
However math is initialised based on server side public key in function KeyAgreementInitiator::Initialize()
// Unpack the responder's public key
if (!math->LoadVerifyAffineXY(responder_public_key, responder_public_key + KeyBytes, B))
return false;
So, as we see, in the whole sage, the most important variable is server side public key that is pre-given to client. However, Raknet send it to client in the id_connection_request_replay_1 message in clear text !
Someone has done research on this part and we can talk about it. This problem really has been bothering me a long time.
Hey guys,
I am mostly a Java guy doing a lot of Minecraft: Pocket Edition Server development. MCPE uses RakNet as it's networking library, so with the Oculus purchase I thought that maybe I could use RakNet with C# as C# is similar to Java. I had some trouble compiling, but I finally got the C# code generated somehow, and I used VS2013 Community to compile it into a DLL. I added it into my project, and once I start receiving packets, the program crashes as I try to create a BitStream for each packet. A System.TypeInitalizationException is thrown. I have searched google for this, and turned up with nothing.
private void handlePacket(byte[] buffer)
{
BitStream bs = new BitStream(buffer, (uint)buffer.Length, false);
byte packetID;
bs.Read(out packetID);
switch (packetID)
{
default:
logger.Info("Got a packet: " + packetID);
break;
}
}
README.md refers to the following project files which are missing from the repo:
In the main CMakeLists.txt are two different tags for building samples:
RAKNET_ENABLE_SAMPLES and RAKNET_GENERATE_SAMPLES
Function RakString::Assign doesn't handle long string well on Linux version.
There are 2 calls to function _vsnprintf.
First one is followed by ... #ifndef _WIN32, but second one isn't.
I believe this will cause RakString::Assign to produce wrong result on long strings in Linux version (strings longer than 512 chars).
RakNet DoS attack.
The problem lays in ACKs and NAKs system in function:
ReliabilityLayer::HandleSocketReceiveFromConnectedPlayer
commit e97c4bb didn't fix it
Specially crafted packet can hang RakNet thread for quite a while or freeze it for good.
ReliabilityLayer.cpp
Line 736:
for (i=0; i<incomingAcks.ranges.Size();i++)
{
...
...
Line 746:
for (datagramNumber=incomingAcks.ranges[i].minIndex; datagramNumber >= incomingAcks.ranges[i].minIndex && datagramNumber <= incomingAcks.ranges[i].maxIndex; datagramNumber++)
}
and
Line 818:
for (i=0; i<incomingNAKs.ranges.Size();i++)
{
...
...
Line 831:
for (messageNumber=incomingNAKs.ranges[i].minIndex; messageNumber >= incomingNAKs.ranges[i].minIndex && messageNumber <= incomingNAKs.ranges[i].maxIndex; messageNumber++)
}
When ranges[i].minIndex = 0 and ranges[i].maxIndex = 0xFFFFFFFE then loop will be executed 4294967294 times. Which is a lot. What is more, a single packet can contain
even 200 "ranges" or more. So loop at line 746 and 818 going to be executed 200 * 4294967294 = 858993458800 times, because ranges.Size() = 200;
This can hang RakNet thread for a while, so no new incoming connections are going to be accepted and all peers already connected will timeout.
Special case:
incomingNAKs.ranges[i].minIndex = 0 and incomingNAKs.ranges[i].maxIndex = 0xFFFFFFFF then loop at line 818 will never end.
In this case RakNet thread will be trapped in an endless loop.
Does the Nat Punchthrough work on G4?
Is it possible to make the Lobby2 Steam plugin work under linux? Right now it uses Windows-dependent headers and sockets. What will be necessary to port it to linux?
Some parameters (like "${RAKNET_NAMED_INCLUDE_ONLY_DIR}" and "${RakNet_SOURCE_DIR}/Lib/DLL") are passed to CMake commands in your build scripts without enclosing them by quotation marks. I see that these places will result in build difficulties if the contents of the used variables will contain special characters like semicolons.
I would recommend to apply advices from a wiki article.
Before iphone upgrade to ios10.2, all going well, after upgrade can not connect.
sendto returns -1 and errno is 1(EPERM).
When I connect a NAT64 wifi, all going well again, why?
Please help me!
At lines between 220 and 227 in void BitStream::Write(BitStream *bitStream, BitSize_t bits2Write):
} else
{
// Existing byte
if( bitStream->data[bitStream->mReadPosBits >> 3] &
( 0x80 >> ( bitStream->mReadPosBits & 7 ) ) )
data[mWritePosBits >> 3] |= 0x80 >> ( numberOfBitsMod8 );
// Set the bit to 1else 0, do nothing
}
In RakPeer.cpp at line 417 - 423
for( i = 0; i < socketDescriptorCount; i++ )
{
if( socketList[i]->IsBerkleySocket() )
( (RNS2_Berkley*) socketList[i] )->CreateRecvPollingThread(threadPriority);
}
if the number of bound sockets are greater than 1, mroe than one thread will be created to handle recv data. However, as the document says, raknet only support one-thread-send and one-thread-recv.
This code in a Big-Endian system:
RakNet::uint24_t test(0);
test++;
printf("%u\n", test.val);
will print 0 and not the expected 1.
I will try to solve it and post a solution in a comment.
Hi I use raknet secure connections in my game but it crash in android here is logcat log.
F/libc (18590): Fatal signal 7 (SIGBUS), code 1, fault addr 0x96d62c87 in tid 18665 (Thread-5992)
W/libc (18590): Security Level: (1), Debug inforamtion is controlled by the DUMPABLE flag.
I/DEBUG ( 446): *** *** *** *** *** *** *** *** *** *** *** *** *** *** * ***
I/DEBUG ( 446): Build fingerprint: 'htc/htc_asia_tw/htc_eyetuhl:5.0.2/LRX22G/653658.2:user/release-keys'
I/DEBUG ( 446): Revision: '0'
I/DEBUG ( 446): ABI: 'arm'
I/DEBUG ( 446): pid: 18590, tid: 18665, name: Thread-5992 >>> com.plangtongs.skyheroes <<<
I/DEBUG ( 446): signal 7 (SIGBUS), code 1 (BUS_ADRALN), fault addr 0x96d62c87
I/DEBUG ( 446): r0 95213588 r1 96d62c87 r2 00000008 r3 00000000
I/DEBUG ( 446): r4 00000000 r5 00000000 r6 995ef788 r7 95213588
I/DEBUG ( 446): r8 96d62c87 r9 952136c0 sl 96d62c7f fp 00000001
I/DEBUG ( 446): ip 95213580 sp 95213514 lr 9ac016b3 pc 9abff36e cpsr 800f0030
I/DEBUG ( 446):
I/DEBUG ( 446): backtrace:
I/DEBUG ( 446): #00 pc 0144336e /data/app/com.plangtongs.skyheroes-1/lib/arm/libUE4.so (cat::SecureEqual(void const_, void const_, int)+27)
I/DEBUG ( 446): #1 pc 014456af /data/app/com.plangtongs.skyheroes-1/lib/arm/libUE4.so (cat::AuthenticatedEncryption::Decrypt(unsigned char_, unsigned int&)+282)
I/DEBUG ( 446): #2 pc 0143e461 /data/app/com.plangtongs.skyheroes-1/lib/arm/libUE4.so (RakNet::ReliabilityLayer::HandleSocketReceiveFromConnectedPlayer(char const_, unsigned int, RakNet::SystemAddress&, DataStructures::ListRakNet::PluginInterface2&, int, RakNet::RakNetSocket2_, RakNet::RakNetRandom_, unsigned long long, RakNet::BitStream&)+184)
I/DEBUG ( 446): #3 pc 01434237 /data/app/com.plangtongs.skyheroes-1/lib/arm/libUE4.so (RakNet::ProcessNetworkPacket(RakNet::SystemAddress, char const_, int, RakNet::RakPeer_, RakNet::RakNetSocket2_, unsigned long long, RakNet::BitStream&)+150)
I/DEBUG ( 446): #4 pc 0143648f /data/app/com.plangtongs.skyheroes-1/lib/arm/libUE4.so (RakNet::RakPeer::RunUpdateCycle(RakNet::BitStream&)+98)
I/DEBUG ( 446): #5 pc 0142edb3 /data/app/com.plangtongs.skyheroes-1/lib/arm/libUE4.so (RakNet::UpdateNetworkLoop(void_)+62)
I/DEBUG ( 446): #6 pc 00012f93 /system/lib/libc.so (__pthread_start(void)+30)
I/DEBUG ( 446): #7 pc 00011057 /system/lib/libc.so (__start_thread+6)
Hello. As far as I know, there is no cancer is RUDP. but do not know whether it guarantees the safety of the package?
In general sent Xml
rak_peer-> Send (ptr, size, HIGH_PRIORITY, RELIABLE_ORDERED, 0, to_guid, false);
And sometimes it comes distorted, and always the same
Here - the most interesting thing in the end, as if a piece of torn out and crooked inserted ago
Normal - http://www.everfall.com/paste/id.php?8g41jw03yyf2
Damaged - http://www.everfall.com/paste/id.php?ivmdr8fa0cc8
This crap happens rarely, but it happens only when the server Win64 client communication via Android 2G 3G or 4G ...
this function only works as we thought on nagative types in little endian system. That is it will compresss the 11111111 or 00000000, however, for big endian, it does not compresss in a correct way bacause the byte of nagative type located at low memeory adresss in big endian system are high byte.
I try to send simple udp massage to simple boost::asio server
for this example i used the boost::asio echo server
and the raknet tutorial .
The server accept the client massage but i have problem translate in boost::asio concepts the use of RakNet.
How do i use the RakNet::BitStream inside the Boost::Asio server
to the raknet client could understand it , or even can i do that ?
In short what i need to change in this simple example so it could work .
class server
{
public:
server(boost::asio::io_service& io_service, short port)
: socket_(io_service, udp::endpoint(udp::v4(), port))
{
socket_.async_receive_from(
boost::asio::buffer(data_, max_length), sender_endpoint_,
boost::bind(&server::handle_receive_from, this,
boost::asio::placeholders::error,
boost::asio::placeholders::bytes_transferred));
}
void handle_receive_from(const boost::system::error_code& error,
size_t bytes_recvd)
{
if (!error && bytes_recvd > 0)
{
socket_.async_send_to(
boost::asio::buffer(data_, bytes_recvd), sender_endpoint_,
boost::bind(&server::handle_send_to, this,
boost::asio::placeholders::error,
boost::asio::placeholders::bytes_transferred));
}
else
{
socket_.async_receive_from(
boost::asio::buffer(data_, max_length), sender_endpoint_,
boost::bind(&server::handle_receive_from, this,
boost::asio::placeholders::error,
boost::asio::placeholders::bytes_transferred));
}
}
void handle_send_to(const boost::system::error_code& /*error*/,
size_t /*bytes_sent*/)
{
socket_.async_receive_from(
boost::asio::buffer(data_, max_length), sender_endpoint_,
boost::bind(&server::handle_receive_from, this,
boost::asio::placeholders::error,
boost::asio::placeholders::bytes_transferred));
}
private:
udp::socket socket_;
udp::endpoint sender_endpoint_;
enum { max_length = 1024 };
char data_[max_length];
};
int main(int argc, char* argv[])
{
try
{
boost::asio::io_service io_service;
using namespace std; // For atoi.
server s(io_service, 9991);
std::cout << "Starting server on 9991" <<std::endl;
io_service.run();
}
catch (std::exception& e)
{
std::cerr << "Exception: " << e.what() << "\n";
}
return 0;
}
And the RakNet Client
void RakNetWrapper::Init()
{
char str[512];
strcpy(str, "127.0.0.1");
RakNet::SocketDescriptor sd;
RakNet::StartupResult startupResult = peer->Startup(1, &sd, 1);
RakNet::ConnectionAttemptResult connectionAttemptResult = peer->Connect(str, SERVER_PORT, 0, 0);
StartReciveLoop();
}
void RakNetWrapper::StartReciveLoop()
{
while (1)
{
for (packet = peer->Receive(); packet; peer->DeallocatePacket(packet), packet = peer->Receive())
{
switch (packet->data[0])
{
case ID_REMOTE_DISCONNECTION_NOTIFICATION:
log("Another client has disconnected.\n");
break;
case ID_REMOTE_CONNECTION_LOST:
log("Another client has lost the connection.\n");
break;
case ID_REMOTE_NEW_INCOMING_CONNECTION:
log("Another client has connected.\n");
break;
case ID_CONNECTION_REQUEST_ACCEPTED:
{
log("Our connection request has been accepted.\n");
// Use a BitStream to write a custom user message
// Bitstreams are easier to use than sending casted structures, and handle endian swapping automatically
RakNet::BitStream bsOut;
bsOut.Write((RakNet::MessageID)ID_GAME_MESSAGE_1);
bsOut.Write("Hello world");
peer->Send(&bsOut, HIGH_PRIORITY, RELIABLE_ORDERED, 0, packet->systemAddress, false);
}
break;
case ID_NEW_INCOMING_CONNECTION:
log("A connection is incoming.\n");
break;
case ID_NO_FREE_INCOMING_CONNECTIONS:
log("The server is full.\n");
break;
case ID_DISCONNECTION_NOTIFICATION:
{
log("We have been disconnected.\n");
}
break;
case ID_CONNECTION_LOST:
{
log("Connection lost.\n");
}
break;
case ID_GAME_MESSAGE_1:
{
RakNet::RakString rs;
RakNet::BitStream bsIn(packet->data, packet->length, false);
bsIn.IgnoreBytes(sizeof(RakNet::MessageID));
bsIn.Read(rs);
log("%s\n", rs.C_String());
}
break;
default:
log("Message with identifier %i has arrived.\n", packet->data[0]);
break;
}
}
}
}
Hi, Friends of RakNet!
I Try Build RakNet 4.081 with VS2015 (Enterprise) and Windows10 (Enterprise). Not Work! Have Errors on Build (Code of Error):
https://gist.github.com/patodeborracha/6f715008bec979ecaa57
Thank You!
Need any update for secure connection or depricated?
I see some parts is very old.
I'd like to send a custom packet to a client before kicking them with CloseConnection.
So I put a IMMEDIATE_PRIORITY in my Send function right before CloseConnection but the packet never reaches the client..
So I wonder if there's a way to send some data to the client before kicking them?
CrossConnectionTest.cpp tests connecting two peers at the same time with the internet simulator running.
One of the test conditionals is a duplicate, whilst the accompanying text output indicates the intention was to test something different ("ID_NEW_INCOMING_CONNECTION is false for both instances")
This may have been caused by an errant copy-paste.
int main()
{
printf("An internal test to test two peers connecting to each other\n");
printf("at the same time. This causes bugs so I fix them here\n");
...
else if (gotConnectionRequestAccepted[0]==0 && gotConnectionRequestAccepted[1]==0)
{
printf("Test failed, ID_CONNECTION_REQUEST_ACCEPTED is false for both instances\n");
}
else if (gotNewIncomingConnection[0]==1 && gotNewIncomingConnection[1]==1)
{
printf("Test failed, ID_NEW_INCOMING_CONNECTION is true for both instances\n");
}
else if (gotConnectionRequestAccepted[0]==0 && gotConnectionRequestAccepted[1]==0)
{
// ** ISSUE HERE, DUPLICATES ABOVE CONDITIONAL **
printf("Test failed, ID_NEW_INCOMING_CONNECTION is false for both instances\n");
}
...
int newRemoteClientIndex=-1;
for (newRemoteClientIndex=0; newRemoteClientIndex < remoteClientsLength; newRemoteClientIndex++)
{
remoteClients[newRemoteClientIndex].isActiveMutex.Lock();
if (remoteClients[newRemoteClientIndex].isActive==false)
{
remoteClients[newRemoteClientIndex].SetActive(true);
remoteClients[newRemoteClientIndex].isActiveMutex.Unlock();
break;
}
remoteClients[newRemoteClientIndex].isActiveMutex.Unlock();
}
if (newRemoteClientIndex==-1)
return UNASSIGNED_SYSTEM_ADDRESS;
if all removeClients
is inactive then newRemoteClientIndex==remoteClientsLength
. But the code doesn't check for that. And use newRemoteClientIndex
as usual.
I found memory leak issue everytime I assign a new queue to an old queue by using operator=. After debuging the source codes line by line in raknet, i found there is a bug in the impl of operator= function in line of 303 - 307 in DS_Queue.h file:
template
bool Queue<queue_type>::operator= ( const Queue& original_copy )
{
if ( ( &original_copy ) == this ) return false;
Clear(FILE_AND_LINE);
// Allocate memory for copy
if ( original_copy.Size() == 0 ) ///line 303
{
allocation_size = 0; /
} ///line 307
........
As you see, when original queue has size of 0, raknet just simply updates allocation_size to 0.
template
void Queue<queue_type>::Push( const queue_type& input, const char *file, unsigned int line )
{
if ( allocation_size == 0 )
{
array = RakNet::OP_NEW_ARRAY<queue_type>(16, file, line );
head = 0;
tail = 1;
array[ 0 ] = input;
allocation_size = 16;
return ;
}
......
So, When you then push a new element to this queue, you will get memory leak withput deleting the old array.
I've noticed that there is an issue in CCRakNetSlidingWindow.cpp where math.h is included rather than cmath which causes an ambiguous call to abs() and fails to compile. Just thought I would point this out.
It's all over. Here is just one example:
(which is funny because it buffer overflows AND SQL injects on the same line)
I'm not sure what the current state of those dependencies are, and if there's newer patched versions. Definitely not safe to use in the meantime.
I just did a quick grep for:
grep -rn "SELECT " .
Try doing the same and you'll see loads of hits.
As the forum looks dead , and massages here are barely get answered ,
Where are the community of RakNet are Usually?
Tישמלד
Is accepting incoming connections supported in WinRT? I've added both Internet (Client & Server) and Private Networks to the capabilities of my app, and have modified the WinRT sample code accept connections and it never connects.
RakPeerInterface *rakPeer = RakPeerInterface::GetInstance();
RakNet::SocketDescriptor socketDescriptor;
socketDescriptor.port = DEFAULT_SERVER_PORT;
socketDescriptor.socketFamily = AF_INET; // IPV4
// Startup the peer interface with the given socket settings. Will fail if we already have a peer interface for this host
RakNet::StartupResult startupResult = rakPeer->Startup(MAX_CONNECTIONS, &socketDescriptor, 1);
assert(startupResult == RAKNET_STARTED);
// Calling this function starts the peer listening for incoming connections
rakPeer->SetMaximumIncomingConnections(MAX_CONNECTIONS);
Packet *packet;
do
{
packet = rakPeer->Receive();
Sleep(1);
}
while (!packet || packet->data[0] != ID_NEW_INCOMING_CONNECTION);
RakAssert(packet->data[0] == ID_NEW_INCOMING_CONNECTION);
using this following command in Source directory
g++ -pthread -g -I./../DependentExtensions *.cpp
i have this error:
/usr/lib/gcc/x86_64-unknown-linux-gnu/5.3.0/../../../../lib/crt1.o: nella funzione "_start":
(.text+0x20): riferimento non definito a "main"
collect2: error: ld returned 1 exit status
Did a quick:
grep -rn "sprintf(" .
and got 215 results. Some of these seem pretty serious, too. Like:
https://github.com/OculusVR/RakNet/blob/master/Source/EmailSender.cpp#L153
Which has a good chance of being remote.
I may try to make a pull request later, but this is going to need a big change and I thought you ought to know soon. "Swiss cheese" comes to mind. I'd recommend taking care of the low hanging fruit first, replace all unsafe string functions with their safe counterparts. IE: snprintf() instead of sprintf(). I'd also not recommend running this on any important systems until then.
Other things to grep for which will give you loads of dangerous overflows in the RakNet code:
"strcat", "strcpy", and "memcpy"
Thanks
There is no provided cmake module for client project using CMake to find RakNet easily. All custom FindRakNet.cmake modules I have found online so far does not manage windows/visual studio case, they only work on linux.
As an example, the DS_WeightedGraph.h implementation of GetShortestPath() and GetSpanningTree() use the following template:
for (col=0; X.Size(); col++)
path.Insert(X.Pop(), _FILE_AND_LINE_);
It was probably intended to use !X.Empty()
instead.
Note, there is a potential performance impact here (unquantified) given this is designed to be a performant algorithm.
Initial report is a printf without sufficient arguments otherwise expected at TCPInterface.cpp:1370
printf("SSL_ERROR_SYSCALL SSL_get_error ret=\n", res);
However, a refactoring could allow a more expressive error report from OpenSSL's SSL_get_error(ssl, res) and ERR_get_error() API.
cf. lefcha/imapfilter@23f1257 and
cf. https://www.openssl.org/docs/ssl/SSL_get_error.html
Atfer Building the source Code via VS2015
I run the NatCompleteServer Then Run the ComprhansivePCGame.
And The ComprhansivePCGame shows error like this:
Demonstrates networking elements for a P2P game on the PC, self-released,
with player hosted game servers
Difficulty: AdvancedOur guid is 612489550940309598
Started on 127.0.0.1|49154
Enter address of server running the NATCompleteServer project.
Enter for default: 192.168.1.103
Enter server port, or enter for default: 61111
ID_CONNECTION_REQUEST_ACCEPTED from 192.168.1.103|61111,guid=540431956319473136
Discovering UPNP...
List of UPNP devices found on the network :
desc: http://192.168.1.1:1900/igd.xml
st: urn:schemas-upnp-org:device:InternetGatewayDevice:1Downloading rooms...
Error parsing JSON
Thx in advance.
I've run the code analysis on the main project (built from CMake instead of upgrading)
Here's the results for people to pick through:
https://docs.google.com/spreadsheets/d/1IStrkCaQ87qG3Qpu8RCcqosaihXxf9lZOoGEYm7JyMA/edit?usp=sharing
Looks like it contains duplicates of the previously mentioned buffer problems in other issues.
Might be a good idea to setup RakNet on Coverity as well. http://scan.coverity.com
The BitStream has a << operator which simply takes any argument and redirects it to BitStream::Write(...)
:
template <class templateType>
BitStream& operator<<(BitStream& out, templateType& c)
{
out.Write(c);
return out;
}
c
(or the value referenced) however will never be changed, so that c
should be const
. Then the following code becomes valid:
RakString some_str()
{
...
}
BitStream bs;
bs << MessageID(0);
bs << some_str();
An extra null pointer check is not needed in functions like the following.
Whenever I start a compiled client program with raknet, Windows Firewall opens and asks to whitelist the program. Why is that? It is just client program connect to a server. It even happens when using the example code.
I've been having issues where packets are apparently corrupted. This seems to only affect about 1 in 50 people, who it seems to happen to quite regularly. I've added CRCs to both datagrams and packet content, the CRC on the datagrams always pass. The CRC on the packet content itself fails very occasionally.
This apparently happens when packet size > MTU. Could there be an issue when sending lots of data to 100+ connected clients where the client would reconstruct packets wrong?
I'm wanting to enable libCat security on Android but it fails to compile due to cat/src/threads/Threads.cpp
calling pthread_cancel(..)
in Threads::AbortThread()
.
My research suggests that Android/NDK does not support pthread_cancel(..)
Threads.cpp
is included in RakNet/SecureHandshake.cpp
Is there a workaround for this?
I'm building using android-ndk-r10d-linux specifying android-9 as the platform target.
Solved: In case anyone else is having this issue, it's very simple to fix.
You just need to define CAT_NO_ENTROPY_THREAD in cat/Config.hpp.
This removed the thread call completely and building is successful!
At Lib/LibStatic/CMakeLists.txt#L20 there is a hotfix to work around windows quoting issues, which conditional checks "some" vs compilers, which is a bit too restrictive.
IF( MSVC10 OR MSVC11 OR MSVC12 )
For VS2015 preview, which is build chain MSVC14, and any future MSVC's this will require additions to fix this. This causes the build to fail on the incorrect quote escaping.
The majority of the build system is already assuming MSVC chain on windows for definitions and arguments, the same should be assumed for these quoting mechanisms
IF(WIN32 AND NOT UNIX)
instead.
When udp packet greater than mtusize ,between times split packet send out-of-order
fixed:
// Insert the packet into the SplitPacketChannel
// find ReliabilityLayer.cpp file search
// splitPacketChannelList[index]->splitPacketList.Insert(internalPacket, FILE, LINE );
// change to
splitPacketChannelList[index]->splitPacketList.Replace(internalPacket, 0, internalPacket->splitPacketIndex, FILE, LINE);
找到ReliabilityLayer.cpp 文件中的
// splitPacketChannelList[index]->splitPacketList.Insert(internalPacket, FILE, LINE ); 行
//替换为
splitPacketChannelList[index]->splitPacketList.Replace(internalPacket, 0, internalPacket->splitPacketIndex, FILE, LINE);
I guess that a different program design will be needed for your functions "handle_signal_chld" and "mySignalCatcher".
Overview:
There are two .cpp files namely 'FileOperations.cpp' and 'FileList.cpp"
FileOperations.cpp contains a function called 'WriteFileWithDirectories()' which accepts 3 parameters one of which is a pointer to the physical path that the data will be written onto disk.
FileList.cpp contains a function called 'WriteDataToDisk()" which also accepts a parameter as a pointer to the application directory.
Vulnerability Details:
Now the root cause of the vulnerability exists in 'WriteFileWithDirectories' of FileOperations.cpp that the directory structure+filename is only limited to 260 maximum. However 'WriteDataToDisk' function can pass structure+filename up to 512. So when Strcpy() in WriteFileWithDirectories copy path+filename provided by WriteDataToDisk. The overflow is triggered. Refer to the link for more info.
More Info:
There are features that DIRECTLY call 'WriteFileWithDirectories()' function. The result is it effectively eliminates/extend the limitation for max structure+filename size that can be passed to 'WriteFileWithDirectories() since no WriteDataToDisk() function is called before. So there is a window of opportunity in terms of control over buffer.
One such example is DirectoryDeltaTransfer and AutoPatcher feature. Please refer to page 2 and 3 of attached pdf.
(http://www.jenkinssoftware.com/raknet/manual/directorydeltatransfer.html
Attack Vector:
As it has been highlighted. The FileOperations can be implemented both on server side (eg; DirectoryDeltaTransfer) and client side(eg;AutoPatcher ). It means to say that the attack can simply be a malicious user uploading crafted content to the server ( thus exploiting both server itself and users who download the payload).
Hello, when I try to build RakNet for Android with cygwin, I get this error :
jni/RakNetSources/FileList.cpp:18:20: fatal error: asm/io.h: No such file or directory
#include <asm/io.h>
CreateListenSocket
failed, it doesn't return false.isStarted
.I would like to point out that identifiers like "__CHECKSUM_H
" and "__STRING_TABLE_H
" do not fit to the expected naming convention of the C++ language standard.
Would you like to adjust your selection for unique names?
I ported the project via SWIG to C#. The provided sample runs fine on machines like win7, win10 but crashes on XP as soon as i try to connect the client to a running server (for simplicity both running on the same system!). The sample has not been modified.
It's working if the client cannot find the sever (e.g. due to not firing up the server...). I tried to catch all possible exception which can be catched in C#, but no luck here. Just the typical XP prompt (xyz has encountered a problem and needs to close. Send Error Report, Don't Send)
The port was done via visual studio 2015 with the toolset vs140_xp (otherwise it won't even start the application due to missing XP support).
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