ObjFW  Check-in [839112196f]

		ac_cv_snprintf_useful_ret="no")])
AC_MSG_RESULT($ac_cv_snprintf_useful_ret)

test x"$have_asprintf" != x"yes" -a x"$ac_cv_snprintf_useful_ret" != x"yes" && \
	AC_MSG_ERROR(No asprintf and no snprintf returning required space!)

ACX_PTHREAD

AC_CHECK_LIB(ws2_32, main,
	AC_SUBST(WS2_LIBS, "-lws2_32"),
	AC_SUBST(WS2_LIBS, ""))

AC_MSG_CHECKING(whether we have IPv6 support)
AC_CACHE_VAL(ac_cv_have_ipv6, [
	AC_TRY_RUN([
		#include <stdlib.h>
		#include <string.h>

ASPRINTF = @ASPRINTF@
PTHREAD_CFLAGS = @PTHREAD_CFLAGS@
PTHREAD_LIBS = @PTHREAD_LIBS@
WS2_LIBS = @WS2_LIBS@
TESTS = @TESTS@
TEST_LAUNCHER = @TEST_LAUNCHER@

include ../buildsys.mk

CPPFLAGS += -I.. ${PTHREAD_CFLAGS}
CFLAGS += ${LIB_CFLAGS}
OBJCFLAGS += ${LIB_CFLAGS}
LD = ${OBJC}
LDFLAGS += ${LIB_LDFLAGS} ${PTHREAD_LIBS}
LIBS += -lobjc ${WS2_LIBS}

/*
 * Headers for Win32
 *
 * These must be imported after objc/Object and thus OFObject!
 */
#ifdef _WIN32
#define _WIN32_WINNT 0x0501
#import <winsock2.h>
#import <ws2tcpip.h>
#endif

/**
 * The OFTCPSocket class provides functions to create and use sockets.
 */
@interface OFTCPSocket: OFObject <OFStream>
{
#ifndef _WIN32
	int	  sock;
#else
	SOCKET	  sock;
#endif
	struct	  sockaddr *saddr;
	socklen_t saddr_len;
}

/**
 * This needs to be called before any socket can be used.
 */
+ (void)startup;

/**
 * Initializes an already allocated OFTCPSocket.
 *
 * \return An initialized OFTCPSocket
 */
- init;

- free;




/**
 * Connect the OFTCPSocket to the specified destination.
 *
 * \param host The host or IP to connect to
 * \param port The port of the host to connect to
 */

#import <string.h>
#import <unistd.h>
#import <fcntl.h>

#import "OFTCPSocket.h"
#import "OFExceptions.h"

#ifndef INVALID_SOCKET
#define INVALID_SOCKET -1
#endif

@implementation OFTCPSocket
+ (void)startup
{
#ifdef _WIN32
	WSADATA wsa;

	if (WSAStartup(MAKEWORD(2, 0), &wsa))
		@throw [OFInitializationFailedException newWithClass: self];
#endif
}

- init
{
	if ((self = [super init])) {
		sock = INVALID_SOCKET;
		saddr = NULL;
		saddr_len = 0;
	}

	return self;
}

- free
{
	if (sock != INVALID_SOCKET)
		close(sock);

	return [super free];
}

- setSocket: (int)socket
{

{
	struct addrinfo hints, *res, *res0;
	char portstr[6];

	if (!port)
		@throw [OFInvalidPortException newWithObject: self];

	if (sock != INVALID_SOCKET)
		@throw [OFAlreadyConnectedException newWithObject: self];

	memset(&hints, 0, sizeof(struct addrinfo));
	hints.ai_family = AF_UNSPEC;
	hints.ai_socktype = SOCK_STREAM;

	snprintf(portstr, 6, "%d", port);

	if (getaddrinfo(host, portstr, &hints, &res0))
		@throw [OFAddressTranslationFailedException
		    newWithObject: self
			  andNode: host
		       andService: portstr];

	for (res = res0; res != NULL; res = res->ai_next) {
		if ((sock = socket(res->ai_family, res->ai_socktype,
		    res->ai_protocol)) == INVALID_SOCKET)
			continue;

		if (connect(sock, res->ai_addr, res->ai_addrlen) == -1) {
			close(sock);
			sock = INVALID_SOCKET;
			continue;
		}

		break;
	}

	freeaddrinfo(res0);

	if (sock == INVALID_SOCKET)
		@throw [OFConnectionFailedException newWithObject: self
							  andHost: host
							  andPort: port];

	return self;
}

-    bindOn: (const char*)host
   withPort: (uint16_t)port
  andFamily: (int)family
{
	struct addrinfo hints, *res;
	char portstr[6];

	if (!port)
		@throw [OFInvalidPortException newWithObject: self];

	if (sock != INVALID_SOCKET)
		@throw [OFAlreadyConnectedException newWithObject: self];

	if ((sock = socket(family, SOCK_STREAM, 0)) == INVALID_SOCKET)
		@throw [OFBindFailedException newWithObject: self
						    andHost: host
						    andPort: port
						  andFamily: family];

	memset(&hints, 0, sizeof(struct addrinfo));
	hints.ai_family = family;
	hints.ai_socktype = SOCK_STREAM;

	snprintf(portstr, 6, "%d", port);

	if (getaddrinfo(host, portstr, &hints, &res))
		@throw [OFAddressTranslationFailedException
		    newWithObject: self
			  andNode: host
		       andService: portstr];

	if (bind(sock, res->ai_addr, res->ai_addrlen) == -1) {
		freeaddrinfo(res);
		@throw [OFBindFailedException newWithObject: self
						    andHost: host
						    andPort: port
						  andFamily: family];
	}

	freeaddrinfo(res);

	return self;
}

- listenWithBackLog: (int)backlog
{
	if (sock == INVALID_SOCKET)
		@throw [OFNotConnectedException newWithObject: self];

	if (listen(sock, backlog) == -1)
		@throw [OFListenFailedException newWithObject: self
						   andBackLog: backlog];

	return self;
}

- listen
{
	if (sock == INVALID_SOCKET)
		@throw [OFNotConnectedException newWithObject: self];

	if (listen(sock, 5) == -1)
		@throw [OFListenFailedException newWithObject: self
						   andBackLog: 5];

	return self;
}

- (OFTCPSocket*)accept

	@try {
		addr = [newsock getMemWithSize: sizeof(struct sockaddr)];
	} @catch(id e) {
		[newsock free];
		@throw e;
	}

	if ((s = accept(sock, addr, &addrlen)) == INVALID_SOCKET) {
		[newsock free];
		@throw [OFAcceptFailedException newWithObject: self];
	}

	[newsock setSocket: s];
	[newsock setSocketAddress: addr
		       withLength: addrlen];

	return newsock;
}

- (size_t)readNBytes: (size_t)size
	  intoBuffer: (uint8_t*)buf
{
	ssize_t ret;

	if (sock == INVALID_SOCKET)
		@throw [OFNotConnectedException newWithObject: self];

	if ((ret = recv(sock, (char*)buf, size, 0)) < 1)
		@throw [OFReadFailedException newWithObject: self
						    andSize: size];

	/* This is safe, as we already checked < 1 */
	return ret;
}

- (uint8_t*)readNBytes: (size_t)size
{
	uint8_t *ret;

	if (sock == INVALID_SOCKET)
		@throw [OFNotConnectedException newWithObject: self];

	ret = [self getMemWithSize: size];

	@try {
		[self readNBytes: size
		      intoBuffer: ret];
	} @catch (id exception) {
		[self freeMem: ret];
		@throw exception;
	}

	return ret;
}

- (size_t)writeNBytes: (size_t)size
	   fromBuffer: (const uint8_t*)buf
{
	ssize_t ret;

	if (sock == INVALID_SOCKET)
		@throw [OFNotConnectedException newWithObject: self];

	if ((ret = send(sock, (char*)buf, size, 0)) == -1)
		@throw [OFWriteFailedException newWithObject: self
						     andSize: size];

	/* This is safe, as we already checked for -1 */
	return ret;
}

- (size_t)writeCString: (const char*)str
{
	if (sock == INVALID_SOCKET)
		@throw [OFNotConnectedException newWithObject: self];

	return [self writeNBytes: strlen(str)
		      fromBuffer: (const uint8_t*)str];
}

- setBlocking: (BOOL)enable
{
#ifndef _WIN32
	int flags;

	if ((flags = fcntl(sock, F_GETFL)) == -1)
		@throw [OFSetOptionFailedException newWithObject: self];

	if (enable)
		flags &= ~O_NONBLOCK;
	else
		flags |= O_NONBLOCK;

	if (fcntl(sock, F_SETFL, flags) == -1)
		@throw [OFSetOptionFailedException newWithObject: self];
#else
	u_long v = enable;

	if (ioctlsocket(sock, FIONBIO, &v) == SOCKET_ERROR)
		@throw [OFSetOptionFailedException newWithObject: self];
#endif

	return self;
}

- enableKeepAlives: (BOOL)enable
{
	int v = enable;

	if (setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, (char*)&v, sizeof(v)))

		@throw [OFSetOptionFailedException newWithObject: self];

	return self;
}

- close
{
	if (sock == INVALID_SOCKET)
		@throw [OFNotConnectedException newWithObject: self];

	sock = INVALID_SOCKET;

	if (saddr != NULL)
		[self freeMem: saddr];
	saddr_len = 0;

	return self;
}
@end

PROG_NOINST = oftcpsocket${PROG_SUFFIX}
SRCS = OFTCPSocket.m

include ../../buildsys.mk
include ../../extra.mk

CPPFLAGS += -I../../src -I../..
LIBS += -L../../src -lobjfw -lobjc ${WS2_LIBS}

.PHONY: run

all: run
run: ${PROG_NOINST}
	rm -f libobjfw.so.1 libobjfw.so.1.0 libobjfw.dylib
	ln -s ../../src/libobjfw.so libobjfw.so.1

#import <time.h>
#import <stdlib.h>
#import <string.h>

#import "OFTCPSocket.h"
#import "OFExceptions.h"


inline uint16_t get_port()
{
	uint16_t port = (uint16_t)rand();

	if (port < 1024)
		port += 1024;

	printf("Using port %d...\n", port);

	return port;
}


int
main()
{

	uint16_t port;

	srand(time(NULL));

	@try {
		[OFTCPSocket startup];

		OFTCPSocket *server = [OFTCPSocket new];
		OFTCPSocket *client = [OFTCPSocket new];
		OFTCPSocket *accepted;
		char buf[7];

		puts("== IPv4 ==");
		port = get_port();

		[accepted free];
		[client free];
		[server free];
	} @catch(OFException *e) {
		printf("EXCEPTION: %s\n", [e cString]);
		return 1;
	}


	return 0;
}