/*
* Copyright (c) 2012, Jonathan Schleifer <js@webkeks.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#define _C99_SOURCE
#define _POSIX_SOURCE
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include "stream.h"
#include "tcpsocket.h"
struct CFWTCPSocket {
CFWStream stream;
int fd;
bool at_end;
};
static ssize_t
sock_read(void *ptr, void *buf, size_t len)
{
CFWTCPSocket *sock = ptr;
ssize_t ret;
if ((ret = recv(sock->fd, buf, len, 0)) == 0)
sock->at_end = true;
return ret;
}
static bool
sock_write(void *ptr, const void *buf, size_t len)
{
CFWTCPSocket *sock = ptr;
ssize_t ret;
if ((ret = send(sock->fd, buf, len, 0)) < len)
return false;
return true;
}
static bool
sock_at_end(void *ptr)
{
CFWTCPSocket *sock = ptr;
return sock->at_end;
}
static void
sock_close(void *ptr)
{
CFWTCPSocket *sock = ptr;
if (sock->fd != -1)
close(sock->fd);
}
static struct cfw_stream_ops stream_ops = {
.read = sock_read,
.write = sock_write,
.at_end = sock_at_end,
.close = sock_close
};
static bool
ctor(void *ptr, va_list args)
{
CFWTCPSocket *sock = ptr;
cfw_stream->ctor(ptr, args);
sock->fd = -1;
sock->stream.ops = &stream_ops;
sock->at_end = false;
return true;
}
static void
dtor(void *ptr)
{
cfw_stream->dtor(ptr);
}
bool
cfw_tcpsocket_connect(CFWTCPSocket *sock, const char *host, uint16_t port)
{
struct addrinfo hints, *res, *res0;
char portstr[7];
if (sock->fd != -1)
return false;
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
snprintf(portstr, 7, "%" PRIu16, port);
if (getaddrinfo(host, portstr, &hints, &res0))
return false;
for (res = res0; res != NULL; res = res->ai_next) {
if ((sock->fd = socket(res->ai_family, res->ai_socktype,
res->ai_protocol)) == -1)
continue;
if (connect(sock->fd, res->ai_addr, res->ai_addrlen) == -1) {
close(sock->fd);
sock->fd = -1;
continue;
}
break;
}
freeaddrinfo(res0);
return (sock->fd != -1);
}
static CFWClass class = {
.name = "CFWTCPSocket",
.size = sizeof(CFWTCPSocket),
.ctor = ctor,
.dtor = dtor
};
CFWClass *cfw_tcpsocket = &class;