Initial community commit
This commit is contained in:
Jef
parent
537bcbc862
commit
fc06254474
16440 changed files with 4239995 additions and 2 deletions
384
Src/replicant/jnetlib/udpconnection.cpp
Normal file
384
Src/replicant/jnetlib/udpconnection.cpp
Normal file
|
|
@ -0,0 +1,384 @@
|
|||
/*
|
||||
** JNetLib
|
||||
** Copyright (C) 2000-2001 Nullsoft, Inc.
|
||||
** Author: Justin Frankel
|
||||
** File: udpconnection.cpp - JNL UDP connection implementation
|
||||
** License: see jnetlib.h
|
||||
*/
|
||||
|
||||
#include "netinc.h"
|
||||
#include "util.h"
|
||||
#include "udpconnection.h"
|
||||
|
||||
JNL_UDPConnection::JNL_UDPConnection(unsigned short incoming_port, JNL_AsyncDNS *dns, int sendbufsize, int recvbufsize)
|
||||
{
|
||||
init();
|
||||
open(dns, sendbufsize, recvbufsize);
|
||||
|
||||
m_socket=::socket(PF_INET,SOCK_DGRAM,0);
|
||||
if (m_socket==-1)
|
||||
{
|
||||
m_errorstr="creating socket";
|
||||
m_state=STATE_ERROR;
|
||||
}
|
||||
SET_SOCK_BLOCK(m_socket,0);
|
||||
sockaddr_in m_iaddr;
|
||||
memset(&m_iaddr,0,sizeof(struct sockaddr_in));
|
||||
m_iaddr.sin_family=AF_INET;
|
||||
m_iaddr.sin_port=htons(incoming_port);
|
||||
m_iaddr.sin_addr.s_addr = htonl( INADDR_ANY );
|
||||
if(::bind(m_socket,(struct sockaddr *)&m_iaddr,sizeof(m_iaddr))==-1)
|
||||
{
|
||||
m_errorstr="binding socket";
|
||||
m_state=STATE_ERROR;
|
||||
}
|
||||
m_state=STATE_CONNECTED;
|
||||
}
|
||||
|
||||
JNL_UDPConnection::JNL_UDPConnection()
|
||||
{
|
||||
init();
|
||||
}
|
||||
|
||||
void JNL_UDPConnection::init()
|
||||
{
|
||||
m_errorstr="";
|
||||
address=0;
|
||||
address_len=0;
|
||||
m_dns=0;
|
||||
m_dns_owned=false;
|
||||
m_socket=-1;
|
||||
m_remote_port=0;
|
||||
m_state=STATE_NOCONNECTION;
|
||||
m_host=0;
|
||||
saddr=0;
|
||||
m_last_addr_len=0;
|
||||
ttl=0;
|
||||
}
|
||||
|
||||
void JNL_UDPConnection::set_ttl(uint8_t new_ttl)
|
||||
{
|
||||
ttl=new_ttl;
|
||||
setsockopt(m_socket, IPPROTO_IP, IP_MULTICAST_TTL, (const char *)&ttl, sizeof(ttl));
|
||||
}
|
||||
|
||||
void JNL_UDPConnection::open(int incoming_socket, JNL_AsyncDNS *dns, size_t sendbufsize, size_t recvbufsize)
|
||||
{
|
||||
if (dns != JNL_AUTODNS && dns)
|
||||
{
|
||||
m_dns=dns;
|
||||
m_dns_owned=false;
|
||||
}
|
||||
else if (!m_dns)
|
||||
{
|
||||
m_dns=new JNL_AsyncDNS;
|
||||
m_dns_owned=true;
|
||||
}
|
||||
recv_buffer.reserve(recvbufsize);
|
||||
send_buffer.reserve(sendbufsize);
|
||||
|
||||
m_socket=incoming_socket;
|
||||
m_state=STATE_CONNECTED;
|
||||
|
||||
}
|
||||
|
||||
void JNL_UDPConnection::open(JNL_AsyncDNS *dns, size_t sendbufsize, size_t recvbufsize)
|
||||
{
|
||||
if (dns != JNL_AUTODNS && dns)
|
||||
{
|
||||
m_dns=dns;
|
||||
m_dns_owned=false;
|
||||
}
|
||||
else if (!m_dns)
|
||||
{
|
||||
m_dns=new JNL_AsyncDNS;
|
||||
m_dns_owned=true;
|
||||
}
|
||||
recv_buffer.reserve(recvbufsize);
|
||||
send_buffer.reserve(sendbufsize);
|
||||
}
|
||||
|
||||
void JNL_UDPConnection::setpeer(const char *hostname, int port)
|
||||
{
|
||||
m_remote_port=(unsigned short)port;
|
||||
m_host = _strdup(hostname);
|
||||
|
||||
if (!m_host || !m_host[0])
|
||||
{
|
||||
m_errorstr="empty hostname";
|
||||
m_state=STATE_ERROR;
|
||||
}
|
||||
else
|
||||
{
|
||||
m_state=STATE_RESOLVING;
|
||||
}
|
||||
}
|
||||
|
||||
void JNL_UDPConnection::setpeer(sockaddr *addr, socklen_t length /* of addr */)
|
||||
{
|
||||
//memcpy(&m_saddr, addr, sizeof(sockaddr));
|
||||
free(address);
|
||||
address_len=length;
|
||||
address=(sockaddr *)malloc(length);
|
||||
memcpy(address, addr, length);
|
||||
}
|
||||
|
||||
JNL_UDPConnection::~JNL_UDPConnection()
|
||||
{
|
||||
if (m_socket >= 0)
|
||||
{
|
||||
::closesocket(m_socket);
|
||||
m_socket=-1;
|
||||
}
|
||||
if (!saddr) // free it if it was passed to us (by JNL_Listen, presumably)
|
||||
free(address); // TODO: change this if we ever do round-robin DNS connecting or in any way change how we handle 'address'
|
||||
|
||||
if (m_dns_owned)
|
||||
{
|
||||
delete static_cast<JNL_AsyncDNS *>(m_dns);
|
||||
}
|
||||
free(m_host);
|
||||
}
|
||||
|
||||
void JNL_UDPConnection::run(size_t max_send_bytes, size_t max_recv_bytes, size_t *bytes_sent, size_t *bytes_rcvd)
|
||||
{
|
||||
size_t bytes_allowed_to_send=(max_send_bytes<0)?send_buffer.size():max_send_bytes;
|
||||
size_t bytes_allowed_to_recv=(max_recv_bytes<0)?recv_buffer.avail():max_recv_bytes;
|
||||
|
||||
if (bytes_sent) *bytes_sent=0;
|
||||
if (bytes_rcvd) *bytes_rcvd=0;
|
||||
|
||||
switch (m_state)
|
||||
{
|
||||
case STATE_RESOLVING:
|
||||
if (saddr == 0)
|
||||
{
|
||||
int a=m_dns->resolve(m_host, m_remote_port, &saddr, SOCK_DGRAM);
|
||||
if (!a)
|
||||
{
|
||||
address=saddr->ai_addr;
|
||||
address_len=(socklen_t)saddr->ai_addrlen;
|
||||
m_state=STATE_CONNECTED;
|
||||
}
|
||||
else if (a == 1)
|
||||
{
|
||||
m_state=STATE_RESOLVING;
|
||||
break;
|
||||
}
|
||||
else
|
||||
{
|
||||
m_errorstr="resolving hostname";
|
||||
m_state=STATE_ERROR;
|
||||
return;
|
||||
}
|
||||
}
|
||||
break;
|
||||
case STATE_CONNECTED:
|
||||
case STATE_CLOSING:
|
||||
if (!send_buffer.empty() && bytes_allowed_to_send>0)
|
||||
{
|
||||
size_t sent = send_buffer.drain(this, bytes_allowed_to_send);
|
||||
if (bytes_sent)
|
||||
*bytes_sent+=sent;
|
||||
}
|
||||
/* only read from socket when buffer is empty
|
||||
* otherwise we risk data loss
|
||||
* see "man 2 recvfrom" for details
|
||||
*/
|
||||
if (recv_buffer.empty() && bytes_allowed_to_recv)
|
||||
{
|
||||
/*
|
||||
* use LockBuffer()/UnlockBuffer() because
|
||||
* "wrap-around" reads can't be done
|
||||
* we might read data from two separate packets
|
||||
*/
|
||||
size_t len = recv_buffer.avail();
|
||||
if (bytes_allowed_to_recv < len)
|
||||
len = bytes_allowed_to_recv;
|
||||
|
||||
recv_buffer.clear();
|
||||
void *buffer = recv_buffer.LockBuffer();
|
||||
m_last_addr_len = (int)sizeof(m_last_addr);
|
||||
int res=::recvfrom(m_socket,(char *)buffer,(int)len,0,(sockaddr *)&m_last_addr,&m_last_addr_len);
|
||||
if (res == 0 || (res < 0 && ERRNO != JNL_EWOULDBLOCK))
|
||||
{
|
||||
recv_buffer.UnlockBuffer(0);
|
||||
m_state=STATE_CLOSED;
|
||||
break;
|
||||
}
|
||||
if (res > 0)
|
||||
{
|
||||
if (bytes_rcvd)
|
||||
*bytes_rcvd+=res;
|
||||
recv_buffer.UnlockBuffer(res);
|
||||
}
|
||||
else
|
||||
recv_buffer.UnlockBuffer(0);
|
||||
|
||||
}
|
||||
if (m_state == STATE_CLOSING)
|
||||
{
|
||||
if (send_buffer.empty()) m_state = STATE_CLOSED;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* RingBuffer client function */
|
||||
size_t JNL_UDPConnection::Read(void *dest, size_t len)
|
||||
{
|
||||
if (!len)
|
||||
return 0;
|
||||
|
||||
m_last_addr_len = (int)sizeof(m_last_addr);
|
||||
int res=::recvfrom(m_socket, (char *)dest, (int)len, 0, (sockaddr *)&m_last_addr,&m_last_addr_len);
|
||||
if (res == 0 || (res < 0 && ERRNO != JNL_EWOULDBLOCK))
|
||||
{
|
||||
m_state=STATE_CLOSED;
|
||||
return 0;
|
||||
}
|
||||
if (res > 0)
|
||||
return res;
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* RingBuffer client function */
|
||||
size_t JNL_UDPConnection::Write(const void *dest, size_t len)
|
||||
{
|
||||
if (!len)
|
||||
return 0;
|
||||
int res=::sendto(m_socket, (const char *)dest, (int)len, 0, address, address_len);
|
||||
if (res==-1 && ERRNO != JNL_EWOULDBLOCK)
|
||||
{
|
||||
return 0;
|
||||
// m_state=STATE_CLOSED;
|
||||
}
|
||||
if (res > 0)
|
||||
return res;
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
|
||||
void JNL_UDPConnection::close(int quick)
|
||||
{
|
||||
if (quick || m_state == STATE_RESOLVING)
|
||||
{
|
||||
m_state=STATE_CLOSED;
|
||||
if (m_socket >= 0)
|
||||
{
|
||||
::closesocket(m_socket);
|
||||
}
|
||||
m_socket=-1;
|
||||
recv_buffer.clear();
|
||||
send_buffer.clear();
|
||||
m_remote_port=0;
|
||||
free(m_host);
|
||||
m_host=0;
|
||||
//memset(&m_saddr,0,sizeof(m_saddr));
|
||||
}
|
||||
else
|
||||
{
|
||||
if (m_state == STATE_CONNECTED) m_state=STATE_CLOSING;
|
||||
}
|
||||
}
|
||||
|
||||
size_t JNL_UDPConnection::send_bytes_in_queue(void)
|
||||
{
|
||||
return send_buffer.size();
|
||||
}
|
||||
|
||||
size_t JNL_UDPConnection::send_bytes_available(void)
|
||||
{
|
||||
return send_buffer.avail();
|
||||
}
|
||||
|
||||
int JNL_UDPConnection::send(const void *data, size_t length)
|
||||
{
|
||||
if (length > send_bytes_available())
|
||||
{
|
||||
return -1;
|
||||
}
|
||||
|
||||
send_buffer.write(data, length);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int JNL_UDPConnection::send_string(const char *line)
|
||||
{
|
||||
return send(line,strlen(line));
|
||||
}
|
||||
|
||||
size_t JNL_UDPConnection::recv_bytes_available(void)
|
||||
{
|
||||
return recv_buffer.size();
|
||||
}
|
||||
|
||||
size_t JNL_UDPConnection::peek_bytes(void *data, size_t maxlength)
|
||||
{
|
||||
return recv_buffer.peek(data, maxlength);
|
||||
}
|
||||
|
||||
size_t JNL_UDPConnection::recv_bytes(void *data, size_t maxlength)
|
||||
{
|
||||
return recv_buffer.read(data, maxlength);
|
||||
}
|
||||
|
||||
int JNL_UDPConnection::recv_lines_available(void)
|
||||
{
|
||||
int l=(int)recv_bytes_available();
|
||||
int lcount=0;
|
||||
int lastch=0;
|
||||
int pos;
|
||||
for (pos=0; pos < l; pos ++)
|
||||
{
|
||||
char t;
|
||||
if (recv_buffer.at(pos, &t, 1) != 1)
|
||||
return lcount;
|
||||
if ((t=='\r' || t=='\n') &&(
|
||||
(lastch != '\r' && lastch != '\n') || lastch==t
|
||||
)) lcount++;
|
||||
lastch=t;
|
||||
}
|
||||
return lcount;
|
||||
}
|
||||
|
||||
int JNL_UDPConnection::recv_line(char *line, size_t maxlength)
|
||||
{
|
||||
if (maxlength > recv_buffer.size()) maxlength=recv_buffer.size();
|
||||
while (maxlength--)
|
||||
{
|
||||
char t;
|
||||
if (recv_buffer.read(&t, 1) == 0)
|
||||
{
|
||||
*line=0;
|
||||
return 0;
|
||||
}
|
||||
if (t == '\r' || t == '\n')
|
||||
{
|
||||
char r;
|
||||
if (recv_buffer.peek(&r, 1) != 0)
|
||||
{
|
||||
if ((r == '\r' || r == '\n') && r != t)
|
||||
recv_buffer.advance(1);
|
||||
}
|
||||
*line=0;
|
||||
return 0;
|
||||
}
|
||||
*line++=t;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
int JNL_UDPConnection::get_interface(sockaddr *sin, socklen_t *sin_length)
|
||||
{
|
||||
if (m_socket==-1) return 1;
|
||||
/*memset(sin,0,sizeof(sockaddr_storage));
|
||||
*sin_length =sizeof(sockaddr_storage);*/
|
||||
if (::getsockname(m_socket,(sockaddr *)sin,sin_length))
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
Loading…
Add table
Add a link
Reference in a new issue