kopia lustrzana https://github.com/jamescoxon/dl-fldigi
1378 wiersze
29 KiB
C++
1378 wiersze
29 KiB
C++
// ----------------------------------------------------------------------------
|
|
// socket.cxx
|
|
//
|
|
// Copyright (C) 2008-2009
|
|
// Stelios Bounanos, M0GLD
|
|
//
|
|
// This file is part of fldigi.
|
|
//
|
|
// fldigi is free software; you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation; either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// fldigi 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.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
// ----------------------------------------------------------------------------
|
|
|
|
#include <config.h>
|
|
|
|
#include <sys/types.h>
|
|
|
|
#ifndef __MINGW32__
|
|
# include <sys/socket.h>
|
|
# include <netdb.h>
|
|
# if defined(__OpenBSD__) && defined(nitems)
|
|
# undef nitems
|
|
# endif
|
|
# include <arpa/inet.h>
|
|
# include <netinet/in.h>
|
|
# include <sys/time.h>
|
|
# include <sys/select.h>
|
|
#else
|
|
# include "compat.h"
|
|
#define socklen_t int
|
|
/*
|
|
//#define _WIN32_WINNT 0x0501
|
|
#define NI_NOFQDN 0x01
|
|
#define NI_NUMERICHOST 0x02
|
|
#define NI_NAMEREQD 0x04
|
|
#define NI_NUMERICSERV 0x08
|
|
#define NI_DGRAM 0x10
|
|
*/
|
|
#endif
|
|
|
|
#define DEFAULT_BUFFER_SIZE 1024
|
|
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
|
|
#include <string>
|
|
#include <sstream>
|
|
#include <cerrno>
|
|
#include <cstring>
|
|
#include <cstdlib>
|
|
#include <cmath>
|
|
#include <cstdio>
|
|
#include <errno.h>
|
|
|
|
//#undef NDEBUG
|
|
#include "debug.h"
|
|
|
|
#include "socket.h"
|
|
|
|
|
|
#if HAVE_GETADDRINFO && !defined(AI_NUMERICSERV)
|
|
# define AI_NUMERICSERV 0
|
|
#endif
|
|
|
|
using namespace std;
|
|
|
|
static int dummy_value = 0;
|
|
|
|
//
|
|
// utility functions
|
|
//
|
|
|
|
#if HAVE_GETADDRINFO
|
|
static void copy_addrinfo(struct addrinfo** info, const struct addrinfo* src)
|
|
{
|
|
struct addrinfo* p = *info;
|
|
|
|
for (const struct addrinfo* rp = src; rp; rp = rp->ai_next) {
|
|
if (p) {
|
|
p->ai_next = new struct addrinfo;
|
|
p = p->ai_next;
|
|
}
|
|
else {
|
|
p = new struct addrinfo;
|
|
if (!*info)
|
|
*info = p;
|
|
}
|
|
|
|
p->ai_flags = rp->ai_flags;
|
|
p->ai_family = rp->ai_family;
|
|
p->ai_socktype = rp->ai_socktype;
|
|
p->ai_protocol = rp->ai_protocol;
|
|
p->ai_addrlen = rp->ai_addrlen;
|
|
if (rp->ai_addr) {
|
|
p->ai_addr = reinterpret_cast<struct sockaddr*>(new struct sockaddr_storage);
|
|
memcpy(p->ai_addr, rp->ai_addr, rp->ai_addrlen);
|
|
}
|
|
else
|
|
p->ai_addr = NULL;
|
|
if (rp->ai_canonname)
|
|
p->ai_canonname = strdup(rp->ai_canonname);
|
|
else
|
|
p->ai_canonname = NULL;
|
|
|
|
p->ai_next = NULL;
|
|
}
|
|
}
|
|
|
|
static void free_addrinfo(struct addrinfo* ai)
|
|
{
|
|
for (struct addrinfo *next, *p = ai; p; p = next) {
|
|
next = p->ai_next;
|
|
delete reinterpret_cast<struct sockaddr_storage*>(p->ai_addr);
|
|
free(p->ai_canonname);
|
|
delete p;
|
|
}
|
|
}
|
|
|
|
#else
|
|
|
|
static void copy_charpp(char*** dst, const char* const* src)
|
|
{
|
|
if (src == NULL) {
|
|
*dst = NULL;
|
|
return;
|
|
}
|
|
|
|
size_t n = 0;
|
|
for (const char* const* s = src; *s; s++)
|
|
n++;
|
|
*dst = new char*[n+1];
|
|
for (size_t i = 0; i < n; i++)
|
|
(*dst)[i] = strdup(src[i]);
|
|
(*dst)[n] = NULL;
|
|
}
|
|
|
|
static void copy_hostent(struct hostent* dst, const struct hostent* src)
|
|
{
|
|
if (src->h_name)
|
|
dst->h_name = strdup(src->h_name);
|
|
else
|
|
dst->h_name = NULL;
|
|
copy_charpp(&dst->h_aliases, src->h_aliases);
|
|
dst->h_length = src->h_length;
|
|
|
|
if (src->h_addr_list) {
|
|
size_t n = 0;
|
|
for (const char* const* p = src->h_addr_list; *p; p++)
|
|
n++;
|
|
dst->h_addr_list = new char*[n+1];
|
|
for (size_t i = 0; i < n; i++) {
|
|
dst->h_addr_list[i] = new char[src->h_length];
|
|
memcpy(dst->h_addr_list[i], src->h_addr_list[i], src->h_length);
|
|
}
|
|
dst->h_addr_list[n] = NULL;
|
|
}
|
|
else
|
|
dst->h_addr_list = NULL;
|
|
}
|
|
|
|
static void copy_servent(struct servent* dst, const struct servent* src)
|
|
{
|
|
if (src->s_name)
|
|
dst->s_name = strdup(src->s_name);
|
|
else
|
|
dst->s_name = NULL;
|
|
copy_charpp(&dst->s_aliases, src->s_aliases);
|
|
dst->s_port = src->s_port;
|
|
if (src->s_proto)
|
|
dst->s_proto = strdup(src->s_proto);
|
|
else
|
|
dst->s_proto = NULL;
|
|
}
|
|
|
|
static void free_charpp(char** pp)
|
|
{
|
|
if (!pp)
|
|
return;
|
|
for (char** p = pp; *p; p++)
|
|
free(*p);
|
|
delete [] pp;
|
|
}
|
|
|
|
static void free_hostent(struct hostent* hp)
|
|
{
|
|
free(const_cast<char*>(hp->h_name));
|
|
free_charpp(hp->h_aliases);
|
|
if (hp->h_addr_list) {
|
|
for (char** p = hp->h_addr_list; *p; p++)
|
|
delete [] *p;
|
|
delete [] hp->h_addr_list;
|
|
}
|
|
}
|
|
|
|
static void free_servent(struct servent* sp)
|
|
{
|
|
free(const_cast<char*>(sp->s_name));
|
|
free_charpp(sp->s_aliases);
|
|
free(sp->s_proto);
|
|
}
|
|
#endif // HAVE_GETADDRINFO
|
|
|
|
|
|
//
|
|
// Address class
|
|
//
|
|
|
|
Address::Address(const char* host, int port, const char* proto_name)
|
|
: node(host), copied(false)
|
|
{
|
|
#if HAVE_GETADDRINFO
|
|
info = NULL;
|
|
#else
|
|
memset(&host_entry, 0, sizeof(host_entry));
|
|
memset(&service_entry, 0, sizeof(service_entry));
|
|
#endif
|
|
|
|
if (node.empty() && (port == 0))
|
|
return;
|
|
|
|
ostringstream s;
|
|
s << port;
|
|
service = s.str();
|
|
|
|
lookup(proto_name);
|
|
}
|
|
|
|
Address::Address(const char* host, const char* port_name, const char* proto_name)
|
|
: node(host), service(port_name), copied(false)
|
|
{
|
|
#if HAVE_GETADDRINFO
|
|
info = NULL;
|
|
#else
|
|
memset(&host_entry, 0, sizeof(host_entry));
|
|
memset(&service_entry, 0, sizeof(service_entry));
|
|
#endif
|
|
|
|
lookup(proto_name);
|
|
}
|
|
|
|
Address::Address(const Address& addr)
|
|
{
|
|
#if HAVE_GETADDRINFO
|
|
info = NULL;
|
|
#else
|
|
memset(&host_entry, 0, sizeof(host_entry));
|
|
memset(&service_entry, 0, sizeof(service_entry));
|
|
#endif
|
|
|
|
*this = addr;
|
|
}
|
|
|
|
Address::~Address()
|
|
{
|
|
#if HAVE_GETADDRINFO
|
|
if (info) {
|
|
if (!copied)
|
|
freeaddrinfo(info);
|
|
else
|
|
free_addrinfo(info);
|
|
}
|
|
#else
|
|
free_hostent(&host_entry);
|
|
free_servent(&service_entry);
|
|
#endif
|
|
}
|
|
|
|
Address& Address::operator=(const Address& rhs)
|
|
{
|
|
if (this == &rhs)
|
|
return *this;
|
|
|
|
node = rhs.node;
|
|
service = rhs.service;
|
|
|
|
#if HAVE_GETADDRINFO
|
|
if (info) {
|
|
if (!copied)
|
|
freeaddrinfo(info);
|
|
else
|
|
free_addrinfo(info);
|
|
}
|
|
copy_addrinfo(&info, rhs.info);
|
|
#else
|
|
free_hostent(&host_entry);
|
|
free_servent(&service_entry);
|
|
copy_hostent(&host_entry, &rhs.host_entry);
|
|
copy_servent(&service_entry, &rhs.service_entry);
|
|
|
|
addr.ai_protocol = rhs.addr.ai_protocol;
|
|
addr.ai_socktype = rhs.addr.ai_socktype;
|
|
#endif
|
|
|
|
copied = true;
|
|
return *this;
|
|
}
|
|
|
|
void Address::lookup(const char* proto_name)
|
|
{
|
|
int proto;
|
|
if (!strcasecmp(proto_name, "tcp"))
|
|
proto = IPPROTO_TCP;
|
|
else if (!strcasecmp(proto_name, "udp"))
|
|
proto = IPPROTO_UDP;
|
|
else
|
|
throw SocketException("Bad protocol name");
|
|
|
|
#if HAVE_GETADDRINFO
|
|
struct addrinfo hints;
|
|
memset(&hints, 0, sizeof(hints));
|
|
# ifdef AI_ADDRCONFIG
|
|
hints.ai_flags = AI_ADDRCONFIG;
|
|
# endif
|
|
hints.ai_family = AF_UNSPEC;
|
|
hints.ai_socktype = (proto == IPPROTO_TCP ? SOCK_STREAM : SOCK_DGRAM);
|
|
|
|
if (service.find_first_not_of("0123456789") == string::npos)
|
|
hints.ai_flags |= AI_NUMERICSERV;
|
|
|
|
int r;
|
|
if ((r = getaddrinfo(node.empty() ? NULL : node.c_str(), service.c_str(), &hints, &info)) < 0)
|
|
throw SocketException(r, "getaddrinfo");
|
|
|
|
#else // use gethostbyname etc.
|
|
memset(&host_entry, 0, sizeof(host_entry));
|
|
memset(&service_entry, 0, sizeof(service_entry));
|
|
|
|
if (node.empty())
|
|
node = "0.0.0.0";
|
|
struct hostent* hp;
|
|
if ((hp = gethostbyname(node.c_str())) == NULL)
|
|
throw SocketException(hstrerror(HOST_NOT_FOUND));
|
|
copy_hostent(&host_entry, hp);
|
|
|
|
int port;
|
|
struct servent* sp;
|
|
if ((sp = getservbyname(service.c_str(), NULL)) == NULL) {
|
|
// if a service name string could not be looked up by name, it must be numeric
|
|
if (service.find_first_not_of("0123456789") != string::npos)
|
|
throw SocketException("Unknown service name");
|
|
port = htons(atoi(service.c_str()));
|
|
sp = getservbyport(port, NULL);
|
|
}
|
|
if (!sp)
|
|
service_entry.s_port = port;
|
|
else
|
|
copy_servent(&service_entry, sp);
|
|
|
|
memset(&addr, 0, sizeof(addr));
|
|
addr.ai_protocol = proto;
|
|
addr.ai_socktype = (proto == IPPROTO_TCP ? SOCK_STREAM : SOCK_DGRAM);
|
|
#endif
|
|
}
|
|
|
|
///
|
|
/// Returns the number of addresses available for
|
|
/// the node and service
|
|
///
|
|
size_t Address::size(void) const
|
|
{
|
|
size_t n = 0;
|
|
#if HAVE_GETADDRINFO
|
|
if (!info)
|
|
return 0;
|
|
for (struct addrinfo* p = info; p; p = p->ai_next)
|
|
n++;
|
|
#else
|
|
if (!host_entry.h_addr_list)
|
|
return 0;
|
|
for (char** p = host_entry.h_addr_list; *p; p++)
|
|
n++;
|
|
#endif
|
|
return n;
|
|
}
|
|
|
|
///
|
|
/// Returns an address from the list of those available
|
|
/// for the node and service
|
|
///
|
|
const addr_info_t* Address::get(size_t n) const
|
|
{
|
|
#if HAVE_GETADDRINFO
|
|
if (!info)
|
|
return NULL;
|
|
|
|
struct addrinfo* p = info;
|
|
for (size_t i = 0; i < n; i++)
|
|
p = p->ai_next;
|
|
# ifndef NDEBUG
|
|
LOG_DEBUG("Found address %s", get_str(p).c_str());
|
|
# endif
|
|
return p;
|
|
#else
|
|
if (!host_entry.h_addr_list)
|
|
return NULL;
|
|
|
|
memset(&saddr, 0, sizeof(saddr));
|
|
saddr.sin_family = AF_INET;
|
|
saddr.sin_addr = *(struct in_addr*)host_entry.h_addr_list[n];
|
|
saddr.sin_port = service_entry.s_port;
|
|
|
|
addr.ai_family = saddr.sin_family;
|
|
addr.ai_addrlen = sizeof(saddr);
|
|
addr.ai_addr = (struct sockaddr*)&saddr;
|
|
# ifndef NDEBUG
|
|
LOG_DEBUG("Found address %s", get_str(&addr).c_str());
|
|
# endif
|
|
return &addr;
|
|
#endif
|
|
}
|
|
|
|
///
|
|
/// Returns the string representation of an address
|
|
///
|
|
string Address::get_str(const addr_info_t* addr)
|
|
{
|
|
if (!addr)
|
|
return "";
|
|
|
|
#if HAVE_GETADDRINFO
|
|
char host[NI_MAXHOST], port[NI_MAXSERV];
|
|
memset(host, 0, sizeof(host));
|
|
if (getnameinfo(addr->ai_addr, sizeof(struct sockaddr_storage),
|
|
host, sizeof(host), port, sizeof(port),
|
|
NI_NUMERICHOST | NI_NUMERICSERV) == 0)
|
|
return string("[").append(host).append("]:").append(port);
|
|
else
|
|
return "";
|
|
#else
|
|
char* host, port[8];
|
|
host = inet_ntoa(((struct sockaddr_in*)addr->ai_addr)->sin_addr);
|
|
snprintf(port, sizeof(port), "%u", htons(((struct sockaddr_in*)addr->ai_addr)->sin_port));
|
|
return string("[").append(host).append("]:").append(port);
|
|
#endif
|
|
}
|
|
|
|
//
|
|
// Socket class
|
|
//
|
|
|
|
|
|
#ifdef __MINGW32__
|
|
void windows_init(void)
|
|
{
|
|
static WSADATA wsaData;
|
|
static int wsa_init_ = 0;
|
|
|
|
if (wsa_init_) return;
|
|
|
|
wsa_init_ = 1;
|
|
|
|
if (WSAStartup(MAKEWORD(WSA_MAJOR, WSA_MINOR), &wsaData)) {
|
|
fprintf(stderr, "unable to initialize winsock: error %d", WSAGetLastError());
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
atexit((void(*)(void)) WSACleanup);
|
|
}
|
|
#endif
|
|
|
|
|
|
/// Constructs a Socket object and associates the address addr with it.
|
|
/// This address will be used by subsequent calls to the bind() or connect()
|
|
/// methods
|
|
///
|
|
/// @param addr An Address object
|
|
///
|
|
Socket::Socket(const Address& addr)
|
|
{
|
|
#ifdef __MINGW32__
|
|
windows_init();
|
|
#endif
|
|
|
|
buffer = new char[BUFSIZ];
|
|
|
|
memset(&timeout, 0, sizeof(timeout));
|
|
anum = 0;
|
|
nonblocking = false;
|
|
autoclose = true;
|
|
saddr_size = sizeof(saddr);
|
|
use_kiss_dual_port = &dummy_value;
|
|
|
|
open(addr);
|
|
}
|
|
|
|
/// Constructs a Socket object from a file descriptor
|
|
///
|
|
/// @param fd A file descriptor
|
|
///
|
|
Socket::Socket(int fd)
|
|
: sockfd(fd)
|
|
{
|
|
#ifdef __MINGW32__
|
|
windows_init();
|
|
#endif
|
|
buffer = new char[BUFSIZ];
|
|
anum = 0;
|
|
memset(&timeout, 0, sizeof(timeout));
|
|
|
|
if (sockfd == -1)
|
|
return;
|
|
|
|
#ifndef __MINGW32__
|
|
int r = fcntl(sockfd, F_GETFL);
|
|
if (r == -1)
|
|
throw SocketException(errno, "fcntl");
|
|
nonblocking = r & O_NONBLOCK;
|
|
#else
|
|
// no way to retrieve nonblocking status on woe32(?!)
|
|
set_nonblocking(false);
|
|
#endif
|
|
autoclose = true;
|
|
}
|
|
|
|
///
|
|
/// Constructs a Socket object by copying another instance
|
|
///
|
|
Socket::Socket(const Socket& s)
|
|
: sockfd(s.sockfd), address(s.address), anum(s.anum),
|
|
nonblocking(s.nonblocking), autoclose(true)
|
|
{
|
|
#ifdef __MINGW32__
|
|
windows_init();
|
|
#endif
|
|
buffer = new char[BUFSIZ];
|
|
ainfo = address.get(anum);
|
|
memcpy(&timeout, &s.timeout, sizeof(timeout));
|
|
s.set_autoclose(false);
|
|
}
|
|
|
|
Socket::~Socket()
|
|
{
|
|
if(buffer) delete [] buffer;
|
|
|
|
if (autoclose)
|
|
close();
|
|
}
|
|
|
|
Socket& Socket::operator=(const Socket& rhs)
|
|
{
|
|
if (this == &rhs)
|
|
return *this;
|
|
|
|
sockfd = rhs.sockfd;
|
|
address = rhs.address;
|
|
anum = rhs.anum;
|
|
ainfo = address.get(anum);
|
|
memcpy(&timeout, &rhs.timeout, sizeof(timeout));
|
|
nonblocking = rhs.nonblocking;
|
|
autoclose = rhs.autoclose;
|
|
|
|
rhs.set_autoclose(false);
|
|
|
|
return *this;
|
|
}
|
|
|
|
void Socket::dual_port(int * dual_port)
|
|
{
|
|
|
|
if(dual_port)
|
|
use_kiss_dual_port = dual_port;
|
|
else
|
|
use_kiss_dual_port = &dummy_value;
|
|
|
|
}
|
|
|
|
void Socket::set_dual_port_number(unsigned int port)
|
|
{
|
|
dual_port_number = port;
|
|
}
|
|
|
|
void Socket::set_dual_port_number(std::string port)
|
|
{
|
|
if(!port.empty()) {
|
|
dual_port_number = (unsigned int) atoi(port.c_str());
|
|
} else {
|
|
use_kiss_dual_port = &dummy_value;
|
|
}
|
|
}
|
|
|
|
///
|
|
/// Associates the Socket with an address
|
|
///
|
|
/// This address will be used by subsequent calls to the bind() or connect
|
|
/// methods.
|
|
///
|
|
/// @params addr An address object
|
|
///
|
|
void Socket::open(const Address& addr)
|
|
{
|
|
address = addr;
|
|
size_t n = address.size();
|
|
|
|
for (anum = 0; anum < n; anum++) {
|
|
ainfo = address.get(anum);
|
|
#ifndef NDEBUG
|
|
LOG_DEBUG("Trying %s", address.get_str(ainfo).c_str());
|
|
#endif
|
|
|
|
if ((sockfd = socket(ainfo->ai_family, ainfo->ai_socktype, ainfo->ai_protocol)) != -1)
|
|
break;
|
|
}
|
|
if (sockfd == -1)
|
|
throw SocketException(errno, "socket");
|
|
set_close_on_exec(true);
|
|
}
|
|
|
|
///
|
|
/// Shuts down the socket
|
|
///
|
|
void Socket::close(void)
|
|
{
|
|
#ifdef __MINGW32__
|
|
::closesocket(sockfd);
|
|
#else
|
|
::close(sockfd);
|
|
#endif
|
|
}
|
|
|
|
///
|
|
/// Waits for the socket file descriptor to become ready for I/O
|
|
///
|
|
/// @params dir Specifies the I/O direction. 0 is input, 1 is output.
|
|
///
|
|
/// @return True if the file descriptor became ready within the timeout
|
|
/// period, false otherwise. @see Socket::set_timeout
|
|
bool Socket::wait(int dir)
|
|
{
|
|
fd_set fdset;
|
|
FD_ZERO(&fdset);
|
|
FD_SET((unsigned)sockfd, &fdset);
|
|
struct timeval t = { timeout.tv_sec, timeout.tv_usec };
|
|
|
|
int r;
|
|
if (dir == 0)
|
|
r = select(sockfd + 1, &fdset, NULL, NULL, &t);
|
|
else if (dir == 1)
|
|
r = select(sockfd + 1, NULL, &fdset, NULL, &t);
|
|
else
|
|
throw SocketException(EINVAL, "Socket::wait");
|
|
if (r == -1)
|
|
throw SocketException(errno, "select");
|
|
|
|
return r;
|
|
}
|
|
|
|
///
|
|
/// Binds the socket to the address associated with the object
|
|
/// @see Socket::open
|
|
///
|
|
void Socket::bind(void)
|
|
{
|
|
int r = 1;
|
|
if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (const char*)&r, sizeof(r)) == -1)
|
|
|
|
#ifndef NDEBUG
|
|
perror("setsockopt SO_REUSEADDR");
|
|
#else
|
|
;
|
|
#endif
|
|
if (::bind(sockfd, ainfo->ai_addr, ainfo->ai_addrlen) == -1) {
|
|
if(errno != EADDRINUSE) // EADDRINUSE == 48
|
|
throw SocketException(errno, "bind");
|
|
}
|
|
}
|
|
|
|
///
|
|
/// Binds the socket to the address associated with the object
|
|
/// @see Socket::open
|
|
///
|
|
|
|
void Socket::bindUDP(void)
|
|
{
|
|
|
|
#ifdef HAVE_GETADDRINFO
|
|
struct addrinfo hints;
|
|
struct addrinfo *res = NULL;
|
|
struct addrinfo *ai_p = NULL;
|
|
struct sockaddr_in *addr_in = NULL;
|
|
struct sockaddr addr;
|
|
|
|
int r = 1;
|
|
if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (const char*)&r, sizeof(r)) == -1)
|
|
throw SocketException(r, "setsockopt SO_REUSEADDR");
|
|
|
|
memset(&hints, 0, sizeof(hints));
|
|
|
|
# ifdef AI_ADDRCONFIG
|
|
hints.ai_flags = AI_ADDRCONFIG;
|
|
# endif
|
|
hints.ai_family = AF_INET;
|
|
hints.ai_socktype = SOCK_DGRAM;
|
|
//hints.ai_protocol = ainfo->ai_protocol;
|
|
hints.ai_flags |= AI_NUMERICSERV;
|
|
|
|
std::string port_io = address.get_service();
|
|
std::string addrStr = address.get_node();
|
|
|
|
if ((r = getaddrinfo(NULL, port_io.c_str(), &hints, &res)) < 0)
|
|
throw SocketException(r, "getaddrinfo");
|
|
|
|
memset(&addr, 0, sizeof(addr));
|
|
addr_in = (sockaddr_in *) &addr;
|
|
|
|
for(ai_p = res; ai_p != NULL; ai_p = ai_p->ai_next) {
|
|
if (ai_p->ai_family == AF_INET) {
|
|
memcpy(addr_in, ai_p->ai_addr, sizeof(addr));
|
|
break;
|
|
}
|
|
}
|
|
|
|
addr_in->sin_addr.s_addr = INADDR_ANY;
|
|
|
|
if (::bind(sockfd, (const struct sockaddr *)&addr, sizeof(struct sockaddr)) == -1) {
|
|
freeaddrinfo(res);
|
|
throw SocketException(errno, "bind");
|
|
}
|
|
|
|
freeaddrinfo(res);
|
|
#else
|
|
int r = 1;
|
|
if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (const char*)&r, sizeof(r)) == -1)
|
|
|
|
#ifndef NDEBUG
|
|
perror("setsockopt SO_REUSEADDR");
|
|
#else
|
|
;
|
|
#endif
|
|
|
|
struct sockaddr_in *addr;
|
|
struct sockaddr_storage store_addr;
|
|
|
|
memset(&store_addr, 0, sizeof(store_addr));
|
|
memcpy(&store_addr, ainfo->ai_addr, sizeof(struct sockaddr_in));
|
|
|
|
addr = (struct sockaddr_in *) &store_addr;
|
|
addr->sin_addr.s_addr = INADDR_ANY;
|
|
|
|
if (::bind(sockfd, (const struct sockaddr *)addr, sizeof(struct sockaddr)) == -1)
|
|
throw SocketException(errno, "bind");
|
|
#endif
|
|
}
|
|
|
|
|
|
///
|
|
/// Calls listen(2) on the socket file desriptor
|
|
///
|
|
/// The socket must already have been bound to an address via a call to the bind
|
|
/// method.
|
|
///
|
|
/// @params backlog The maximum number of pending connections (default SOMAXCONN)
|
|
///
|
|
void Socket::listen(int backlog)
|
|
{
|
|
if (::listen(sockfd, backlog) == -1)
|
|
throw SocketException(errno, "listen");
|
|
}
|
|
|
|
///
|
|
/// Accepts a connection
|
|
///
|
|
/// The socket must already have been bound to an address via a call to the bind
|
|
/// method.
|
|
///
|
|
/// @return A Socket instance for the accepted connection
|
|
///
|
|
Socket Socket::accept(void)
|
|
{
|
|
listen();
|
|
|
|
// wait for fd to become readable
|
|
if (nonblocking && ((timeout.tv_sec > 0) || (timeout.tv_usec > 0)))
|
|
if (!wait(0))
|
|
throw SocketException(ETIMEDOUT, "select");
|
|
|
|
int r;
|
|
if ((r = ::accept(sockfd, NULL, 0)) == -1)
|
|
throw SocketException(errno, "accept");
|
|
set_close_on_exec(true, r);
|
|
|
|
return Socket(r);
|
|
}
|
|
|
|
///
|
|
/// Accepts a single connection and then closes the listening socket
|
|
/// @see Socket::accept
|
|
///
|
|
/// @return A Socket instance for the accepted connection
|
|
///
|
|
Socket Socket::accept1(void)
|
|
{
|
|
bind();
|
|
Socket s = accept();
|
|
close();
|
|
s.set_close_on_exec(true);
|
|
|
|
return s;
|
|
}
|
|
///
|
|
/// Accepts a connection
|
|
///
|
|
/// The socket must already have been bound to an address via a call to the bind
|
|
/// method.
|
|
///
|
|
/// @return A Socket instance pointer for the accepted connection
|
|
///
|
|
Socket * Socket::accept2(void)
|
|
{
|
|
listen();
|
|
|
|
// wait for fd to become readable
|
|
if (nonblocking && ((timeout.tv_sec > 0) || (timeout.tv_usec > 0)))
|
|
if (!wait(0))
|
|
throw SocketException(ETIMEDOUT, "select");
|
|
|
|
int r;
|
|
if ((r = ::accept(sockfd, NULL, 0)) == -1)
|
|
return (Socket *)0;
|
|
set_close_on_exec(true, r);
|
|
|
|
return new Socket(r);
|
|
}
|
|
|
|
///
|
|
/// Connects the socket to the address that is associated with the object
|
|
///
|
|
void Socket::connect(void)
|
|
{
|
|
#ifndef NDEBUG
|
|
LOG_DEBUG("Connecting to %s", address.get_str(ainfo).c_str());
|
|
#endif
|
|
if (::connect(sockfd, ainfo->ai_addr, ainfo->ai_addrlen) == -1)
|
|
throw SocketException(errno, "connect");
|
|
}
|
|
///
|
|
/// Connects the socket to the address that is associated with the object
|
|
/// Return connect state (T/F)
|
|
///
|
|
bool Socket::connect1(void)
|
|
{
|
|
#ifndef NDEBUG
|
|
LOG_DEBUG("Connecting to %s", address.get_str(ainfo).c_str());
|
|
#endif
|
|
if (::connect(sockfd, ainfo->ai_addr, ainfo->ai_addrlen) == -1) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
///
|
|
/// Set socket to allow for broadcasting.
|
|
///
|
|
void Socket::broadcast(bool flag)
|
|
{
|
|
int option = 0;
|
|
|
|
if(flag)
|
|
option = 1;
|
|
|
|
setsockopt(sockfd, SOL_SOCKET, SO_BROADCAST,(char *) &option, sizeof(option));
|
|
}
|
|
|
|
///
|
|
/// Connects the socket to an address
|
|
///
|
|
/// @param addr The address to connect to
|
|
///
|
|
void Socket::connect(const Address& addr)
|
|
{
|
|
close();
|
|
open(addr);
|
|
connect();
|
|
}
|
|
|
|
///
|
|
/// Sends a buffer
|
|
///
|
|
/// @param buf
|
|
/// @param len
|
|
///
|
|
/// @return The amount of data that was sent. This may be less than len
|
|
/// if the socket is non-blocking.
|
|
///
|
|
size_t Socket::send(const void* buf, size_t len)
|
|
{
|
|
// if we have a nonblocking socket and a nonzero timeout,
|
|
// wait for fd to become writeable
|
|
if (nonblocking && ((timeout.tv_sec > 0) || (timeout.tv_usec > 0)))
|
|
if (!wait(1))
|
|
return 0;
|
|
|
|
size_t nToWrite = len;
|
|
int r = 0;
|
|
const char *sp = (const char *)buf;
|
|
|
|
while ( nToWrite > 0) {
|
|
#if defined(__WIN32__)
|
|
r = ::send(sockfd, sp, nToWrite, 0);
|
|
#else
|
|
r = ::write(sockfd, sp, nToWrite);
|
|
#endif
|
|
|
|
if (r > 0) {
|
|
sp += r;
|
|
nToWrite -= r;
|
|
} else {
|
|
if (r == 0) {
|
|
shutdown(sockfd, SHUT_WR);
|
|
throw SocketException(errno, "send");
|
|
} else if (r == -1) {
|
|
switch(errno) {
|
|
case EAGAIN:
|
|
case ENOTCONN:
|
|
case EBADF:
|
|
break;
|
|
default:
|
|
throw SocketException(errno, "send");
|
|
}
|
|
r = 0;
|
|
}
|
|
}
|
|
}
|
|
return r;
|
|
|
|
}
|
|
|
|
///
|
|
/// Sends a string
|
|
///
|
|
/// @param buf
|
|
///
|
|
/// @return The amount of data that was sent. This may be less than len
|
|
/// if the socket is non-blocking.
|
|
///
|
|
size_t Socket::send(const string& buf)
|
|
{
|
|
return send(buf.data(), buf.length());
|
|
}
|
|
|
|
///
|
|
/// Receives data into a buffer
|
|
///
|
|
/// @arg buf
|
|
/// @arg len The maximum number of bytes to write to buf.
|
|
///
|
|
/// @return The amount of data that was received. This may be less than len
|
|
/// if the socket is non-blocking.
|
|
size_t Socket::recv(void* buf, size_t len)
|
|
{
|
|
// if we have a nonblocking socket and a nonzero timeout,
|
|
// wait for fd to become writeable
|
|
if (nonblocking && ((timeout.tv_sec > 0) || (timeout.tv_usec > 0)))
|
|
if (!wait(0))
|
|
return 0;
|
|
|
|
ssize_t r = ::recv(sockfd, (char*)buf, len, 0);
|
|
if (r == 0)
|
|
shutdown(sockfd, SHUT_RD);
|
|
else if (r == -1) {
|
|
if (errno != EAGAIN)
|
|
throw SocketException(errno, "recv");
|
|
r = 0;
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
///
|
|
/// Receives all available data and appends it to a string.
|
|
///
|
|
/// @arg buf
|
|
///
|
|
/// @return The amount of data that was received.
|
|
///
|
|
size_t Socket::recv(string& buf)
|
|
{
|
|
size_t n = 0;
|
|
ssize_t r;
|
|
try {
|
|
while ((r = recv(buffer, BUFSIZ)) > 0) {
|
|
buf.reserve(buf.length() + r);
|
|
buf.append(buffer, r);
|
|
n += r;
|
|
}
|
|
} catch (...) {
|
|
throw;
|
|
}
|
|
|
|
return n;
|
|
}
|
|
|
|
///
|
|
/// Sends a buffer (UDP)
|
|
///
|
|
/// @param buf
|
|
/// @param len
|
|
///
|
|
/// @return The amount of data that was sent. This may be less than len
|
|
/// if the socket is non-blocking.
|
|
///
|
|
size_t Socket::sendTo(const void* buf, size_t len)
|
|
{
|
|
struct sockaddr * useAddr = (struct sockaddr *)0;
|
|
// struct sockaddr dup_addr;
|
|
size_t addr_size = 0;
|
|
|
|
if(use_kiss_dual_port && *use_kiss_dual_port) {
|
|
memset(&saddr_dp, 0, sizeof(saddr_dp));
|
|
memcpy(&saddr_dp, ainfo->ai_addr, ainfo->ai_addrlen);
|
|
set_port((struct sockaddr *) &saddr_dp, dual_port_number);
|
|
useAddr = (struct sockaddr * ) &saddr_dp;
|
|
addr_size = ainfo->ai_addrlen;
|
|
} else {
|
|
useAddr = (struct sockaddr *) ainfo->ai_addr;
|
|
addr_size = ainfo->ai_addrlen;
|
|
}
|
|
|
|
#ifndef NDEBUG
|
|
{
|
|
unsigned long host_addr = get_address4((struct sockaddr *)useAddr);
|
|
unsigned int host_port = get_port((struct sockaddr *) useAddr);
|
|
|
|
LOG_INFO("HAP:%lX:%d count=%d buf=%s", host_addr, host_port, len, buf);
|
|
}
|
|
#endif
|
|
|
|
// if we have a nonblocking socket and a nonzero timeout,
|
|
// wait for fd to become writeable
|
|
if (nonblocking && ((timeout.tv_sec > 0) || (timeout.tv_usec > 0)))
|
|
if (!wait(1))
|
|
return 0;
|
|
|
|
size_t nToWrite = len;
|
|
int r = 0;
|
|
const char *sp = (const char *)buf;
|
|
|
|
|
|
while ( nToWrite > 0) {
|
|
try {
|
|
r = ::sendto(sockfd, sp, nToWrite, 0, useAddr, addr_size);
|
|
}
|
|
catch (...) {
|
|
throw;
|
|
}
|
|
|
|
if (r > 0) {
|
|
sp += r;
|
|
nToWrite -= r;
|
|
} else {
|
|
if (r == 0) {
|
|
shutdown(sockfd, SHUT_WR);
|
|
throw SocketException(errno, "send");
|
|
} else if (r == -1) {
|
|
if (errno != EAGAIN) {
|
|
LOG_INFO("errno = %d (%s) r %d buff %s", errno, strerror(errno), r, sp);
|
|
}
|
|
r = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
///
|
|
/// Sends a string
|
|
///
|
|
/// @param buf
|
|
///
|
|
/// @return The amount of data that was sent. This may be less than len
|
|
/// if the socket is non-blocking.
|
|
///
|
|
size_t Socket::sendTo(const std::string& buf)
|
|
{
|
|
return sendTo(buf.data(), buf.length());
|
|
}
|
|
|
|
//
|
|
// Get the port number from a sockaddr pointer
|
|
//
|
|
void Socket::set_port(struct sockaddr *sa, unsigned int port)
|
|
{
|
|
// unsigned short int port_number = 0;
|
|
|
|
if (sa->sa_family == AF_INET) {
|
|
struct sockaddr_in *saddr_in = (sockaddr_in *) sa;
|
|
saddr_in->sin_port = htons(port);
|
|
}
|
|
}
|
|
|
|
//
|
|
// Get the port number from a sockaddr pointer
|
|
//
|
|
unsigned int Socket::get_port(struct sockaddr *sa)
|
|
{
|
|
unsigned short int port_number = 0;
|
|
|
|
if (sa->sa_family == AF_INET) {
|
|
struct sockaddr_in *saddr_in = (sockaddr_in *) sa;
|
|
port_number = (unsigned short int) saddr_in->sin_port;
|
|
}
|
|
|
|
return (unsigned int) ntohs(port_number);
|
|
}
|
|
|
|
//
|
|
// Get the IP Address number from a sockaddr pointer
|
|
//
|
|
unsigned long Socket::get_address4(struct sockaddr *sa)
|
|
{
|
|
unsigned long IPAddr = 0;
|
|
|
|
if (sa->sa_family == AF_INET) {
|
|
struct sockaddr_in *saddr_in = (sockaddr_in *) sa;
|
|
IPAddr = saddr_in->sin_addr.s_addr;
|
|
}
|
|
|
|
return (unsigned long) ntohl(IPAddr);
|
|
}
|
|
|
|
unsigned long Socket::get_to_address(void)
|
|
{
|
|
return (unsigned long) ntohl(inet_addr(address.get_node().c_str()));
|
|
};
|
|
|
|
|
|
///
|
|
/// Receives data into a buffer (UDP)
|
|
///
|
|
/// @arg buf
|
|
/// @arg len The maximum number of bytes to write to buf.
|
|
///
|
|
/// @return The amount of data that was received. This may be less than len
|
|
/// if the socket is non-blocking.
|
|
size_t Socket::recvFrom(void* buf, size_t len)
|
|
{
|
|
// if we have a nonblocking socket and a nonzero timeout,
|
|
// wait for fd to become writeable
|
|
if (nonblocking && (timeout.tv_sec > 0 || timeout.tv_usec > 0))
|
|
if (!wait(0))
|
|
return 0;
|
|
|
|
struct sockaddr_storage temp_saddr;
|
|
unsigned int temp_saddr_size;
|
|
|
|
temp_saddr_size = sizeof(temp_saddr);
|
|
memset(&temp_saddr, 0, temp_saddr_size);
|
|
|
|
int r = 0;
|
|
|
|
try {
|
|
|
|
r = ::recvfrom(sockfd, (char *)buf, len, 0, (struct sockaddr *)&temp_saddr, (socklen_t *)&temp_saddr_size);
|
|
|
|
if (r == 0)
|
|
shutdown(sockfd, SHUT_RD);
|
|
else if (r < 0) {
|
|
if((errno == EAGAIN) || (errno == 0)) {
|
|
if (errno) LOG_INFO("ErrorNo: %d (%s)", errno, strerror(errno));
|
|
memset(buf, 0, len);
|
|
return 0;
|
|
}
|
|
else {
|
|
LOG_INFO("ErrorNo: %d (%s)", errno, strerror(errno));
|
|
throw SocketException(errno, "recv");
|
|
}
|
|
}
|
|
}
|
|
catch (...) {
|
|
throw;
|
|
}
|
|
|
|
if(r > 0) { // To prevent loop back and except only from address x
|
|
unsigned long srvr_addr = 0x7F000001L;
|
|
unsigned long srvr_to_addr = get_to_address();
|
|
unsigned int srvr_dp_port = get_dual_port_number();
|
|
unsigned int srvr_port = get_local_port();
|
|
unsigned int local_port = get_local_port();
|
|
unsigned long host_addr = get_address4((struct sockaddr *)&temp_saddr);
|
|
unsigned int host_port = get_port((struct sockaddr *)&temp_saddr);
|
|
|
|
if(use_dual_port()) {
|
|
srvr_port = srvr_dp_port;
|
|
}
|
|
|
|
if((srvr_port == host_port) && (srvr_to_addr == host_addr)) {
|
|
if((srvr_addr == host_addr) && (local_port == host_port)) {
|
|
LOG_INFO("Loopback Warning: %X:%u", (unsigned int)host_addr, host_port);
|
|
memset(buf, 0, len);
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
#ifdef USE_ME_ONCE_I_WORK
|
|
///
|
|
/// Return the local Ip Address
|
|
///
|
|
///
|
|
sockaddr_in * Socket::localIPAddress(void)
|
|
{
|
|
char buf[512];
|
|
static struct sockaddr_in localaddr;
|
|
struct msghdr hmsg;
|
|
struct cmsghdr *cmsg;
|
|
struct in_pktinfo *pkt = 0;
|
|
unsigned char *cdat = 0;
|
|
|
|
memset(&hmsg, 0, sizeof(hmsg));
|
|
memset(&cmsg, 0, sizeof(cmsg));
|
|
|
|
hmsg.msg_name = &localaddr;
|
|
hmsg.msg_namelen = sizeof(localaddr);
|
|
hmsg.msg_control = buf;
|
|
hmsg.msg_controllen = sizeof(buf);
|
|
|
|
size_t st = ::recvmsg(sockfd, &hmsg, 0);
|
|
|
|
if(CMSG_FIRSTHDR(&hmsg)) {
|
|
cmsg = CMSG_FIRSTHDR(&hmsg);
|
|
for (; cmsg != NULL; cmsg = CMSG_NXTHDR(&hmsg, cmsg)) {
|
|
if (cmsg->cmsg_level != IPPROTO_IP ||
|
|
cmsg->cmsg_type != IP_PKTINFO) {
|
|
continue;
|
|
}
|
|
cdat = CMSG_DATA(cmsg);
|
|
pkt = (struct in_pktinfo *) cdat;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
///
|
|
/// Receives all available data and appends it to a string.
|
|
///
|
|
/// @arg buf
|
|
///
|
|
/// @return The amount of data that was received.
|
|
///
|
|
size_t Socket::recvFrom(std::string& buf)
|
|
{
|
|
size_t n = 0;
|
|
ssize_t r;
|
|
try {
|
|
while ((r = recvFrom(buffer, BUFSIZ)) > 0) {
|
|
buf.reserve(buf.length() + r);
|
|
buf.append(buffer, r);
|
|
n += r;
|
|
}
|
|
} catch (...) {
|
|
throw;
|
|
}
|
|
|
|
return n;
|
|
}
|
|
|
|
///
|
|
/// Signal to unblock sockets
|
|
///
|
|
///
|
|
void Socket::shut_down(void)
|
|
{
|
|
::shutdown(sockfd, SHUT_RD);
|
|
}
|
|
|
|
///
|
|
/// Retrieves the socket's receive or send buffer size
|
|
///
|
|
/// @param dir Specifies the I/O direction. 0 is input, 1 is output.
|
|
///
|
|
int Socket::get_bufsize(int dir)
|
|
{
|
|
int len;
|
|
if (::get_bufsize(sockfd, dir, &len) == -1)
|
|
throw SocketException(errno, "get_bufsize");
|
|
return len;
|
|
}
|
|
|
|
///
|
|
/// Sets the socket's receive or send buffer size
|
|
///
|
|
/// @param dir Specifies the I/O direction. 0 is input, 1 is output.
|
|
/// @param len Specifies the new buffer size
|
|
///
|
|
void Socket::set_bufsize(int dir, int len)
|
|
{
|
|
if (::set_bufsize(sockfd, dir, len) == -1)
|
|
throw SocketException(errno, "set_bufsize");
|
|
}
|
|
|
|
///
|
|
/// Sets the socket's blocking mode
|
|
///
|
|
/// @param v If true, the socket is set to non-blocking
|
|
///
|
|
void Socket::set_nonblocking(bool v)
|
|
{
|
|
if (set_nonblock(sockfd, v) == -1)
|
|
throw SocketException(errno, "set_nonblock");
|
|
nonblocking = v;
|
|
}
|
|
|
|
///
|
|
/// Enables the use of Nagle's algorithm for the socket
|
|
///
|
|
/// @param v If true, Nagle's algorithm is disabled.
|
|
///
|
|
void Socket::set_nodelay(bool v)
|
|
{
|
|
if (::set_nodelay(sockfd, v) == -1)
|
|
throw SocketException(errno, "set_nodelay");
|
|
}
|
|
|
|
///
|
|
/// Sets the timeout associated with non-blocking operations
|
|
///
|
|
/// @param t
|
|
///
|
|
void Socket::set_timeout(const struct timeval& t)
|
|
{
|
|
timeout.tv_sec = t.tv_sec;
|
|
timeout.tv_usec = t.tv_usec;
|
|
}
|
|
void Socket::set_timeout(double t)
|
|
{
|
|
timeout.tv_sec = (time_t)floor(t);
|
|
timeout.tv_usec = (suseconds_t)((t - timeout.tv_sec) * 1e6);
|
|
}
|
|
|
|
///
|
|
/// Sets the socket's autoclose mode.
|
|
///
|
|
/// If autoclose is disabled, the socket file descriptor will not be closed when
|
|
/// the Socket object is destructed.
|
|
///
|
|
/// @param v If true, the socket will be closed by the destructor
|
|
///
|
|
void Socket::set_autoclose(bool v) const
|
|
{
|
|
autoclose = v;
|
|
}
|
|
|
|
///
|
|
/// Sets the socket's close-on-exec flag
|
|
///
|
|
void Socket::set_close_on_exec(bool v, int fd)
|
|
{
|
|
if (fd == -1)
|
|
fd = sockfd;
|
|
if (set_cloexec(fd, v) == -1)
|
|
throw SocketException(errno, "set_cloexec");
|
|
}
|
|
|
|
///
|
|
/// Returns the Socket's file descriptor.
|
|
///
|
|
/// The descriptor should only be used for reading and writing.
|
|
///
|
|
/// @return the socket file descriptor
|
|
///
|
|
int Socket::fd(void)
|
|
{
|
|
return sockfd;
|
|
}
|