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barrier/lib/net/CNetwork.cpp

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/*
* synergy -- mouse and keyboard sharing utility
* Copyright (C) 2002 Chris Schoeneman
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file COPYING that should have accompanied this file.
*
* This package is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "CNetwork.h"
#include "XNetwork.h"
#include "CLog.h"
#include <algorithm>
//
// CNetwork
//
#if WINDOWS_LIKE
static CNetwork::Socket (PASCAL FAR *accept_winsock)(CNetwork::Socket s, CNetwork::Address FAR *addr, CNetwork::AddressLength FAR *addrlen);
static int (PASCAL FAR *bind_winsock)(CNetwork::Socket s, const CNetwork::Address FAR *addr, CNetwork::AddressLength namelen);
static int (PASCAL FAR *close_winsock)(CNetwork::Socket s);
static int (PASCAL FAR *connect_winsock)(CNetwork::Socket s, const CNetwork::Address FAR *name, CNetwork::AddressLength namelen);
static int (PASCAL FAR *gethostname_winsock)(char FAR * name, int namelen);
static int (PASCAL FAR *getpeername_winsock)(CNetwork::Socket s, CNetwork::Address FAR *name, CNetwork::AddressLength FAR * namelen);
static int (PASCAL FAR *getsockerror_winsock)(void);
static int (PASCAL FAR *getsockname_winsock)(CNetwork::Socket s, CNetwork::Address FAR *name, CNetwork::AddressLength FAR * namelen);
static int (PASCAL FAR *getsockopt_winsock)(CNetwork::Socket s, int level, int optname, void FAR * optval, CNetwork::AddressLength FAR *optlen);
static char FAR * (PASCAL FAR *inet_ntoa_winsock)(struct in_addr in);
static unsigned long (PASCAL FAR *inet_addr_winsock)(const char FAR * cp);
static int (PASCAL FAR *ioctl_winsock)(CNetwork::Socket s, int cmd, void FAR *);
static int (PASCAL FAR *listen_winsock)(CNetwork::Socket s, int backlog);
static ssize_t (PASCAL FAR *recv_winsock)(CNetwork::Socket s, void FAR * buf, size_t len, int flags);
static ssize_t (PASCAL FAR *recvfrom_winsock)(CNetwork::Socket s, void FAR * buf, size_t len, int flags, CNetwork::Address FAR *from, CNetwork::AddressLength FAR * fromlen);
static int (PASCAL FAR *select_winsock)(int nfds, fd_set FAR *readfds, fd_set FAR *writefds, fd_set FAR *exceptfds, const struct timeval FAR *timeout);
static ssize_t (PASCAL FAR *send_winsock)(CNetwork::Socket s, const void FAR * buf, size_t len, int flags);
static ssize_t (PASCAL FAR *sendto_winsock)(CNetwork::Socket s, const void FAR * buf, size_t len, int flags, const CNetwork::Address FAR *to, CNetwork::AddressLength tolen);
static int (PASCAL FAR *setsockopt_winsock)(CNetwork::Socket s, int level, int optname, const void FAR * optval, CNetwork::AddressLength optlen);
static int (PASCAL FAR *shutdown_winsock)(CNetwork::Socket s, int how);
static CNetwork::Socket (PASCAL FAR *socket_winsock)(int af, int type, int protocol);
static struct hostent FAR * (PASCAL FAR *gethostbyaddr_winsock)(const char FAR * addr, int len, int type);
static struct hostent FAR * (PASCAL FAR *gethostbyname_winsock)(const char FAR * name);
static struct servent FAR * (PASCAL FAR *getservbyport_winsock)(int port, const char FAR * proto);
static struct servent FAR * (PASCAL FAR *getservbyname_winsock)(const char FAR * name, const char FAR * proto);
static struct protoent FAR * (PASCAL FAR *getprotobynumber_winsock)(int proto);
static struct protoent FAR * (PASCAL FAR *getprotobyname_winsock)(const char FAR * name);
static int (PASCAL FAR *WSACleanup_winsock)(void);
static int (PASCAL FAR *WSAFDIsSet_winsock)(CNetwork::Socket, fd_set FAR *);
const int CNetwork::Error = SOCKET_ERROR;
const CNetwork::Socket CNetwork::Null = INVALID_SOCKET;
#undef FD_ISSET
#define FD_ISSET(fd, set) WSAFDIsSet_winsock((SOCKET)(fd), (fd_set FAR *)(set))
// have poll() pick up our select() pointer
#define select select_winsock
static HMODULE s_networkModule = NULL;
static
FARPROC
netGetProcAddress(HMODULE module, LPCSTR name)
{
FARPROC func = ::GetProcAddress(module, name);
if (!func) {
throw XNetworkFunctionUnavailable(name);
}
return func;
}
void
CNetwork::init()
{
assert(WSACleanup_winsock == NULL);
assert(s_networkModule == NULL);
// try winsock 2
HMODULE module = (HMODULE)::LoadLibrary("ws2_32.dll");
if (module == NULL) {
LOG((CLOG_NOTE "ws2_32.dll not found"));
}
else {
try {
init2(module);
return;
}
catch (XNetwork& e) {
LOG((CLOG_NOTE "ws2_32.dll error: %s", e.what()));
}
}
// try winsock 1
module = (HMODULE)::LoadLibrary("wsock32.dll");
if (module == NULL) {
LOG((CLOG_NOTE "wsock32.dll not found"));
}
else {
try {
init2(module);
return;
}
catch (XNetwork& e) {
LOG((CLOG_NOTE "wsock32.dll error: %s", e.what()));
}
}
// no networking
throw XNetworkUnavailable();
}
void
CNetwork::cleanup()
{
if (s_networkModule != NULL) {
WSACleanup_winsock();
::FreeLibrary(s_networkModule);
WSACleanup_winsock = NULL;
s_networkModule = NULL;
}
}
UInt32
CNetwork::swaphtonl(UInt32 v)
{
static const union { UInt16 s; UInt8 b[2]; } s_endian = { 0x1234 };
if (s_endian.b[0] == 0x34) {
return ((v & 0xff000000lu) >> 24) |
((v & 0x00ff0000lu) >> 8) |
((v & 0x0000ff00lu) << 8) |
((v & 0x000000fflu) << 24);
}
else {
return v;
}
}
UInt16
CNetwork::swaphtons(UInt16 v)
{
static const union { UInt16 s; UInt8 b[2]; } s_endian = { 0x1234 };
if (s_endian.b[0] == 0x34) {
return static_cast<UInt16>( ((v & 0xff00u) >> 8) |
((v & 0x00ffu) << 8));
}
else {
return v;
}
}
UInt32
CNetwork::swapntohl(UInt32 v)
{
return swaphtonl(v);
}
UInt16
CNetwork::swapntohs(UInt16 v)
{
return swaphtons(v);
}
#define setfunc(var, name, type) var = (type)netGetProcAddress(module, #name)
void
CNetwork::init2(
HMODULE module)
{
assert(module != NULL);
// get startup function address
int (PASCAL FAR *startup)(WORD, LPWSADATA);
setfunc(startup, WSAStartup, int(PASCAL FAR*)(WORD, LPWSADATA));
// startup network library
WORD version = MAKEWORD(1 /*major*/, 1 /*minor*/);
WSADATA data;
int err = startup(version, &data);
if (data.wVersion != version) {
throw XNetworkVersion(LOBYTE(data.wVersion), HIBYTE(data.wVersion));
}
if (err != 0) {
throw XNetworkFailed();
}
// get function addresses
setfunc(accept_winsock, accept, Socket (PASCAL FAR *)(Socket s, Address FAR *addr, AddressLength FAR *addrlen));
setfunc(bind_winsock, bind, int (PASCAL FAR *)(Socket s, const Address FAR *addr, AddressLength namelen));
setfunc(close_winsock, closesocket, int (PASCAL FAR *)(Socket s));
setfunc(connect_winsock, connect, int (PASCAL FAR *)(Socket s, const Address FAR *name, AddressLength namelen));
setfunc(gethostname_winsock, gethostname, int (PASCAL FAR *)(char FAR * name, int namelen));
setfunc(getpeername_winsock, getpeername, int (PASCAL FAR *)(Socket s, Address FAR *name, AddressLength FAR * namelen));
setfunc(getsockerror_winsock, WSAGetLastError, int (PASCAL FAR *)(void));
setfunc(getsockname_winsock, getsockname, int (PASCAL FAR *)(Socket s, Address FAR *name, AddressLength FAR * namelen));
setfunc(getsockopt_winsock, getsockopt, int (PASCAL FAR *)(Socket s, int level, int optname, void FAR * optval, AddressLength FAR *optlen));
setfunc(inet_addr_winsock, inet_addr, unsigned long (PASCAL FAR *)(const char FAR * cp));
setfunc(inet_ntoa_winsock, inet_ntoa, char FAR * (PASCAL FAR *)(struct in_addr in));
setfunc(ioctl_winsock, ioctlsocket, int (PASCAL FAR *)(Socket s, int cmd, void FAR *));
setfunc(listen_winsock, listen, int (PASCAL FAR *)(Socket s, int backlog));
setfunc(recv_winsock, recv, ssize_t (PASCAL FAR *)(Socket s, void FAR * buf, size_t len, int flags));
setfunc(recvfrom_winsock, recvfrom, ssize_t (PASCAL FAR *)(Socket s, void FAR * buf, size_t len, int flags, Address FAR *from, AddressLength FAR * fromlen));
setfunc(select_winsock, select, int (PASCAL FAR *)(int nfds, fd_set FAR *readfds, fd_set FAR *writefds, fd_set FAR *exceptfds, const struct timeval FAR *timeout));
setfunc(send_winsock, send, ssize_t (PASCAL FAR *)(Socket s, const void FAR * buf, size_t len, int flags));
setfunc(sendto_winsock, sendto, ssize_t (PASCAL FAR *)(Socket s, const void FAR * buf, size_t len, int flags, const Address FAR *to, AddressLength tolen));
setfunc(setsockopt_winsock, setsockopt, int (PASCAL FAR *)(Socket s, int level, int optname, const void FAR * optval, AddressLength optlen));
setfunc(shutdown_winsock, shutdown, int (PASCAL FAR *)(Socket s, int how));
setfunc(socket_winsock, socket, Socket (PASCAL FAR *)(int af, int type, int protocol));
setfunc(gethostbyaddr_winsock, gethostbyaddr, struct hostent FAR * (PASCAL FAR *)(const char FAR * addr, int len, int type));
setfunc(gethostbyname_winsock, gethostbyname, struct hostent FAR * (PASCAL FAR *)(const char FAR * name));
setfunc(getservbyport_winsock, getservbyport, struct servent FAR * (PASCAL FAR *)(int port, const char FAR * proto));
setfunc(getservbyname_winsock, getservbyname, struct servent FAR * (PASCAL FAR *)(const char FAR * name, const char FAR * proto));
setfunc(getprotobynumber_winsock, getprotobynumber, struct protoent FAR * (PASCAL FAR *)(int proto));
setfunc(getprotobyname_winsock, getprotobyname, struct protoent FAR * (PASCAL FAR *)(const char FAR * name));
setfunc(WSACleanup_winsock, WSACleanup, int (PASCAL FAR *)(void));
setfunc(WSAFDIsSet_winsock, __WSAFDIsSet, int (PASCAL FAR *)(CNetwork::Socket, fd_set FAR *));
s_networkModule = module;
}
CNetwork::Socket
CNetwork::accept(Socket s, Address* addr, AddressLength* addrlen)
{
return accept_winsock(s, addr, addrlen);
}
int
CNetwork::bind(Socket s, const Address* addr, AddressLength namelen)
{
return bind_winsock(s, addr, namelen);
}
int
CNetwork::close(Socket s)
{
return close_winsock(s);
}
int
CNetwork::connect(Socket s, const Address* name, AddressLength namelen)
{
return connect_winsock(s, name, namelen);
}
int
CNetwork::gethostname(char* name, int namelen)
{
return gethostname_winsock(name, namelen);
}
int
CNetwork::getpeername(Socket s, Address* name, AddressLength* namelen)
{
return getpeername_winsock(s, name, namelen);
}
int
CNetwork::getsockerror(void)
{
return getsockerror_winsock();
}
int
CNetwork::getsockname(Socket s, Address* name, AddressLength* namelen)
{
return getsockname_winsock(s, name, namelen);
}
int
CNetwork::getsockopt(Socket s, int level, int optname, void* optval, AddressLength* optlen)
{
return getsockopt_winsock(s, level, optname, optval, optlen);
}
int
CNetwork::inet_aton(const char* cp, InternetAddress* addr)
{
assert(addr != NULL);
// fake it with inet_addr, which is per-thread on winsock
unsigned long inetAddr = inet_addr_winsock(cp);
if (inetAddr == INADDR_NONE) {
return 0;
}
else {
addr->s_addr = inetAddr;
return 1;
}
}
CString
CNetwork::inet_ntoa(struct in_addr in)
{
// winsock returns strings per-thread
return CString(inet_ntoa_winsock(in));
}
int
CNetwork::ioctl(Socket s, int cmd, void* arg)
{
return ioctl_winsock(s, cmd, arg);
}
int
CNetwork::listen(Socket s, int backlog)
{
return listen_winsock(s, backlog);
}
ssize_t
CNetwork::read(Socket s, void* buf, size_t len)
{
return recv_winsock(s, buf, len, 0);
}
ssize_t
CNetwork::recv(Socket s, void* buf, size_t len, int flags)
{
return recv_winsock(s, buf, len, flags);
}
ssize_t
CNetwork::recvfrom(Socket s, void* buf, size_t len, int flags, Address* from, AddressLength* fromlen)
{
return recvfrom_winsock(s, buf, len, flags, from, fromlen);
}
ssize_t
CNetwork::send(Socket s, const void* buf, size_t len, int flags)
{
return send_winsock(s, buf, len, flags);
}
ssize_t
CNetwork::sendto(Socket s, const void* buf, size_t len, int flags, const Address* to, AddressLength tolen)
{
return sendto_winsock(s, buf, len, flags, to, tolen);
}
int
CNetwork::setsockopt(Socket s, int level, int optname, const void* optval, AddressLength optlen)
{
return setsockopt_winsock(s, level, optname, optval, optlen);
}
int
CNetwork::shutdown(Socket s, int how)
{
return shutdown_winsock(s, how);
}
CNetwork::Socket
CNetwork::socket(int af, int type, int protocol)
{
return socket_winsock(af, type, protocol);
}
ssize_t
CNetwork::write(Socket s, const void* buf, size_t len)
{
return send_winsock(s, buf, len, 0);
}
int
CNetwork::gethostbyaddr(CHostInfo* hostinfo, const char* addr, int len, int type)
{
assert(hostinfo != NULL);
// winsock returns structures per-thread
struct hostent FAR* info = gethostbyaddr_winsock(addr, len, type);
if (info == NULL) {
return getsockerror();
}
else {
CHostInfo tmp(info);
hostinfo->swap(tmp);
return 0;
}
}
int
CNetwork::gethostbyname(CHostInfo* hostinfo, const char* name)
{
assert(hostinfo != NULL);
// winsock returns structures per-thread
struct hostent FAR* info = gethostbyname_winsock(name);
if (info == NULL) {
return getsockerror();
}
else {
CHostInfo tmp(info);
hostinfo->swap(tmp);
return 0;
}
}
int
CNetwork::getservbyport(CServiceInfo* servinfo, int port, const char* proto)
{
assert(servinfo != NULL);
// winsock returns structures per-thread
struct servent FAR* info = getservbyport_winsock(port, proto);
if (info == NULL) {
return getsockerror();
}
else {
CServiceInfo tmp(info);
servinfo->swap(tmp);
return 0;
}
}
int
CNetwork::getservbyname(CServiceInfo* servinfo, const char* name, const char* proto)
{
assert(servinfo != NULL);
// winsock returns structures per-thread
struct servent FAR* info = getservbyname_winsock(name, proto);
if (info == NULL) {
return getsockerror();
}
else {
CServiceInfo tmp(info);
servinfo->swap(tmp);
return 0;
}
}
int
CNetwork::getprotobynumber(CProtocolInfo* protoinfo, int proto)
{
assert(protoinfo != NULL);
// winsock returns structures per-thread
struct protoent FAR* info = getprotobynumber_winsock(proto);
if (info == NULL) {
return getsockerror();
}
else {
CProtocolInfo tmp(info);
protoinfo->swap(tmp);
return 0;
}
}
int
CNetwork::getprotobyname(CProtocolInfo* protoinfo, const char* name)
{
assert(protoinfo != NULL);
// winsock returns structures per-thread
struct protoent FAR* info = getprotobyname_winsock(name);
if (info == NULL) {
return getsockerror();
}
else {
CProtocolInfo tmp(info);
protoinfo->swap(tmp);
return 0;
}
}
int
CNetwork::setblocking(Socket s, bool blocking)
{
int flag = blocking ? 0 : 1;
return ioctl(s, FIONBIO, &flag);
}
int
CNetwork::setnodelay(Socket s, bool nodelay)
{
BOOL flag = nodelay ? 1 : 0;
return setsockopt(s, IPPROTO_TCP, TCP_NODELAY, &flag, sizeof(flag));
}
#endif
#if UNIX_LIKE
#include "CMutex.h"
#include "CLock.h"
#if HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <fcntl.h>
#include <sys/ioctl.h>
#include <arpa/inet.h>
#if !defined(TCP_NODELAY)
# include <netinet/tcp.h>
#endif
const int CNetwork::Error = -1;
const CNetwork::Socket CNetwork::Null = -1;
static CMutex* s_networkMutex = NULL;
#define setfunc(var, name, type) var = (type)::name
UInt32
CNetwork::swaphtonl(UInt32 v)
{
return htonl(v);
}
UInt16
CNetwork::swaphtons(UInt16 v)
{
return htons(v);
}
UInt32
CNetwork::swapntohl(UInt32 v)
{
return ntohl(v);
}
UInt16
CNetwork::swapntohs(UInt16 v)
{
return ntohs(v);
}
void
CNetwork::init()
{
assert(s_networkMutex == NULL);
try {
s_networkMutex = new CMutex;
}
catch (...) {
throw XNetworkFailed();
}
}
void
CNetwork::cleanup()
{
delete s_networkMutex;
s_networkMutex = NULL;
}
CNetwork::Socket
CNetwork::accept(Socket s, Address* addr, AddressLength* addrlen)
{
return ::accept(s, addr, addrlen);
}
int
CNetwork::bind(Socket s, const Address* addr, AddressLength namelen)
{
return ::bind(s, addr, namelen);
}
int
CNetwork::close(Socket s)
{
return ::close(s);
}
int
CNetwork::connect(Socket s, const Address* name, AddressLength namelen)
{
return ::connect(s, name, namelen);
}
int
CNetwork::gethostname(char* name, int namelen)
{
return ::gethostname(name, namelen);
}
int
CNetwork::getpeername(Socket s, Address* name, AddressLength* namelen)
{
return ::getpeername(s, name, namelen);
}
int
CNetwork::getsockerror(void)
{
return errno;
}
int
CNetwork::getsockname(Socket s, Address* name, AddressLength* namelen)
{
return ::getsockname(s, name, namelen);
}
int
CNetwork::getsockopt(Socket s, int level, int optname, void* optval, AddressLength* optlen)
{
return ::getsockopt(s, level, optname, optval, optlen);
}
int
CNetwork::inet_aton(const char* cp, InternetAddress* addr)
{
return ::inet_aton(cp, addr);
}
CString
CNetwork::inet_ntoa(struct in_addr in)
{
// single threaded access to inet_ntoa functions
CLock lock(s_networkMutex);
return CString(::inet_ntoa(in));
}
int
CNetwork::ioctl(Socket s, int cmd, void* arg)
{
return ::ioctl(s, cmd, arg);
}
int
CNetwork::listen(Socket s, int backlog)
{
return ::listen(s, backlog);
}
ssize_t
CNetwork::read(Socket s, void* buf, size_t len)
{
return ::read(s, buf, len);
}
ssize_t
CNetwork::recv(Socket s, void* buf, size_t len, int flags)
{
return ::recv(s, buf, len, flags);
}
ssize_t
CNetwork::recvfrom(Socket s, void* buf, size_t len, int flags, Address* from, AddressLength* fromlen)
{
return ::recvfrom(s, buf, len, flags, from, fromlen);
}
ssize_t
CNetwork::send(Socket s, const void* buf, size_t len, int flags)
{
return ::send(s, buf, len, flags);
}
ssize_t
CNetwork::sendto(Socket s, const void* buf, size_t len, int flags, const Address* to, AddressLength tolen)
{
return ::sendto(s, buf, len, flags, to, tolen);
}
int
CNetwork::setsockopt(Socket s, int level, int optname, const void* optval, AddressLength optlen)
{
return ::setsockopt(s, level, optname, optval, optlen);
}
int
CNetwork::shutdown(Socket s, int how)
{
return ::shutdown(s, how);
}
CNetwork::Socket
CNetwork::socket(int af, int type, int protocol)
{
return ::socket(af, type, protocol);
}
ssize_t
CNetwork::write(Socket s, const void* buf, size_t len)
{
return ::write(s, buf, len);
}
int
CNetwork::gethostbyaddr(CHostInfo* hostinfo, const char* addr, int len, int type)
{
assert(hostinfo != NULL);
// single threaded access to netdb functions
CLock lock(s_networkMutex);
struct hostent* info = ::gethostbyaddr(addr, len, type);
if (info == NULL) {
return h_errno;
}
else {
CHostInfo tmp(info);
hostinfo->swap(tmp);
return 0;
}
}
int
CNetwork::gethostbyname(CHostInfo* hostinfo, const char* name)
{
assert(hostinfo != NULL);
// single threaded access to netdb functions
CLock lock(s_networkMutex);
struct hostent* info = ::gethostbyname(name);
if (info == NULL) {
return h_errno;
}
else {
CHostInfo tmp(info);
hostinfo->swap(tmp);
return 0;
}
}
int
CNetwork::getservbyport(CServiceInfo* servinfo, int port, const char* proto)
{
assert(servinfo != NULL);
// single threaded access to netdb functions
CLock lock(s_networkMutex);
struct servent* info = ::getservbyport(port, proto);
if (info == NULL) {
return -1;
}
else {
CServiceInfo tmp(info);
servinfo->swap(tmp);
return 0;
}
}
int
CNetwork::getservbyname(CServiceInfo* servinfo, const char* name, const char* proto)
{
assert(servinfo != NULL);
// single threaded access to netdb functions
CLock lock(s_networkMutex);
struct servent* info = ::getservbyname(name, proto);
if (info == NULL) {
return -1;
}
else {
CServiceInfo tmp(info);
servinfo->swap(tmp);
return 0;
}
}
int
CNetwork::getprotobynumber(CProtocolInfo* protoinfo, int proto)
{
assert(protoinfo != NULL);
// single threaded access to netdb functions
CLock lock(s_networkMutex);
struct protoent* info = ::getprotobynumber(proto);
if (info == NULL) {
return -1;
}
else {
CProtocolInfo tmp(info);
protoinfo->swap(tmp);
return 0;
}
}
int
CNetwork::getprotobyname(CProtocolInfo* protoinfo, const char* name)
{
assert(protoinfo != NULL);
// single threaded access to netdb functions
CLock lock(s_networkMutex);
struct protoent* info = ::getprotobyname(name);
if (info == NULL) {
return -1;
}
else {
CProtocolInfo tmp(info);
protoinfo->swap(tmp);
return 0;
}
}
int
CNetwork::setblocking(CNetwork::Socket s, bool blocking)
{
int mode = fcntl(s, F_GETFL, 0);
if (mode == -1) {
return -1;
}
if (blocking) {
mode &= ~O_NDELAY;
}
else {
mode |= O_NDELAY;
}
if (fcntl(s, F_SETFL, mode) < 0) {
return -1;
}
return 0;
}
int
CNetwork::setnodelay(CNetwork::Socket s, bool nodelay)
{
int flag = nodelay ? 1 : 0;
return setsockopt(s, IPPROTO_TCP, TCP_NODELAY, &flag, sizeof(flag));
}
#endif
#if HAVE_POLL
int
CNetwork::poll(PollEntry fd[], int nfds, int timeout)
{
return ::poll(fd, nfds, timeout);
}
#else // !HAVE_POLL
#if HAVE_SYS_SELECT_H && !WINDOWS_LIKE
# include <sys/select.h>
#endif
#if HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#if HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#if HAVE_UNISTD_H
# include <unistd.h>
#endif
int
CNetwork::poll(PollEntry fd[], int nfds, int timeout)
{
int i;
// prepare sets for select
int n = 0;
fd_set readSet, writeSet, errSet;
fd_set* readSetP = NULL;
fd_set* writeSetP = NULL;
fd_set* errSetP = NULL;
FD_ZERO(&readSet);
FD_ZERO(&writeSet);
FD_ZERO(&errSet);
for (i = 0; i < nfds; ++i) {
int fdi = static_cast<int>(fd[i].fd);
if (fd[i].events & kPOLLIN) {
FD_SET(fd[i].fd, &readSet);
readSetP = &readSet;
if (fdi > n) {
n = fdi;
}
}
if (fd[i].events & kPOLLOUT) {
FD_SET(fd[i].fd, &writeSet);
writeSetP = &writeSet;
if (fdi > n) {
n = fdi;
}
}
if (true) {
FD_SET(fd[i].fd, &errSet);
errSetP = &errSet;
if (fdi > n) {
n = fdi;
}
}
}
// prepare timeout for select
struct timeval timeout2;
struct timeval* timeout2P;
if (timeout < 0) {
timeout2P = NULL;
}
else {
timeout2P = &timeout2;
timeout2.tv_sec = timeout / 1000;
timeout2.tv_usec = 1000 * (timeout % 1000);
}
// do the select. note that winsock ignores the first argument.
n = select((SELECT_TYPE_ARG1) n + 1,
SELECT_TYPE_ARG234 readSetP,
SELECT_TYPE_ARG234 writeSetP,
SELECT_TYPE_ARG234 errSetP,
SELECT_TYPE_ARG5 timeout2P);
// handle results
if (n == Error) {
return Error;
}
if (n == 0) {
return 0;
}
n = 0;
for (i = 0; i < nfds; ++i) {
fd[i].revents = 0;
if (FD_ISSET(fd[i].fd, &readSet)) {
fd[i].revents |= kPOLLIN;
}
if (FD_ISSET(fd[i].fd, &writeSet)) {
fd[i].revents |= kPOLLOUT;
}
if (FD_ISSET(fd[i].fd, &errSet)) {
fd[i].revents |= kPOLLERR;
}
if (fd[i].revents != 0) {
++n;
}
}
return n;
}
#endif // !HAVE_POLL
//
// CNetwork::CHostInfo
//
CNetwork::CHostInfo::CHostInfo(const struct hostent* hent)
{
assert(hent != NULL);
m_name = hent->h_name;
m_addressType = hent->h_addrtype;
m_addressLength = hent->h_length;
for (char** scan = hent->h_aliases; *scan != NULL; ++scan) {
m_aliases.push_back(*scan);
}
// concatenate addresses together
UInt32 n = 0;
for (char** scan = hent->h_addr_list; *scan != NULL; ++scan) {
++n;
}
m_addressData.reserve(n);
for (char** scan = hent->h_addr_list; *scan != NULL; ++scan) {
m_addressData.append(*scan, m_addressLength);
}
// set pointers into concatenated data
const char* data = m_addressData.data();
for (char** scan = hent->h_addr_list; *scan != NULL; ++scan) {
m_addresses.push_back(data);
data += m_addressLength;
}
}
void
CNetwork::CHostInfo::swap(CHostInfo& v)
{
std::swap(m_name, v.m_name);
std::swap(m_aliases, v.m_aliases);
std::swap(m_addressType, v.m_addressType);
std::swap(m_addressLength, v.m_addressLength);
std::swap(m_addresses, v.m_addresses);
std::swap(m_addressData, v.m_addressData);
}
//
// CNetwork::CServiceInfo
//
CNetwork::CServiceInfo::CServiceInfo(const struct servent* sent)
{
assert(sent != NULL);
m_name = sent->s_name;
m_port = sent->s_port;
m_protocol = sent->s_proto;
for (char** scan = sent->s_aliases; *scan != NULL; ++scan) {
m_aliases.push_back(*scan);
}
}
void
CNetwork::CServiceInfo::swap(CServiceInfo& v)
{
std::swap(m_name, v.m_name);
std::swap(m_aliases, v.m_aliases);
std::swap(m_port, v.m_port);
std::swap(m_protocol, v.m_protocol);
}
//
// CNetwork::CProtocolInfo
//
CNetwork::CProtocolInfo::CProtocolInfo(const struct protoent* pent)
{
assert(pent != NULL);
m_name = pent->p_name;
m_protocol = pent->p_proto;
for (char** scan = pent->p_aliases; *scan != NULL; ++scan) {
m_aliases.push_back(*scan);
}
}
void
CNetwork::CProtocolInfo::swap(CProtocolInfo& v)
{
std::swap(m_name, v.m_name);
std::swap(m_aliases, v.m_aliases);
std::swap(m_protocol, v.m_protocol);
}
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