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/*
* symsocket.c:
*
* Copyright (c) 2008 James McKenzie <james@fishsoup.dhs.org>,
* All rights reserved.
*
*/
static char rcsid[] =
"$Id$";
/*
* $Log$
* Revision 1.2 2008/02/14 00:57:58 james
* *** empty log message ***
*
* Revision 1.1 2008/02/13 18:05:06 james
* *** empty log message ***
*
*/
#include "project.h"
#include <sys/socket.h>
#include <sys/un.h>
#define BUF_SIZE 16384
#define MAX_TXN 4096
void
socket_free (Socket * s)
{
if (!s)
return;
if (s->read_buf)
slide_free (s->read_buf);
if (s->write_buf)
slide_free (s->write_buf);
close (s->fd);
}
Socket *
socket_listen (char *path)
{
int fd;
struct sockaddr_un *sun;
Socket *ret;
int n;
unlink (path);
fd = socket (PF_UNIX, SOCK_STREAM, 0);
if (fd < 0)
return NULL;
n = strlen (path) + sizeof (struct sockaddr_un);
sun = (struct sockaddr_un *) malloc (n);
memset (sun, 0, n);
sun->sun_family = AF_UNIX;
strcpy (sun->sun_path, path);
if (bind (fd, (struct sockaddr *) sun, SUN_LEN (sun)) < 0)
{
free (sun);
close (fd);
return NULL;
}
free (sun);
if (listen (fd, 5) < 0)
{
close (fd);
return NULL;
}
set_nonblocking (fd);
ret = (Socket *) malloc (sizeof (Socket));
memset (ret, 0, sizeof (Socket));
ret->read_buf = NULL;
ret->write_buf = NULL;
ret->fd = fd;
return ret;
}
Socket *
socket_accept (Socket * l)
{
Socket *ret;
int len;
int fd;
struct sockaddr_un sun;
len = sizeof (struct sockaddr_un);
fd = accept (l->fd, (struct sockaddr *) &sun, &len);
if (fd < 0)
return NULL;
ret = (Socket *) malloc (sizeof (Socket));
memset (ret, 0, sizeof (Socket));
set_nonblocking (fd);
ret->fd = fd;
ret->read_buf = slide_new (BUF_SIZE);
ret->write_buf = slide_new (BUF_SIZE);
ret->msg = 0;
return ret;
}
/*Blocking for now*/
Socket *
socket_connect (char *path)
{
int n;
int fd;
struct sockaddr_un *sun;
Socket *ret;
fd = socket (PF_UNIX, SOCK_STREAM, 0);
if (fd < 0)
return NULL;
n = strlen (path) + sizeof (struct sockaddr_un);
sun = (struct sockaddr_un *) malloc (n);
memset (sun, 0, n);
sun->sun_family = AF_UNIX;
strcpy (sun->sun_path, path);
if (connect (fd, (struct sockaddr *) sun, SUN_LEN (sun)))
{
free (sun);
close (fd);
return NULL;
}
free (sun);
set_nonblocking (fd);
ret = (Socket *) malloc (sizeof (Socket));
memset (ret, 0, sizeof (Socket));
ret->fd = fd;
ret->read_buf = slide_new (BUF_SIZE);
ret->write_buf = slide_new (BUF_SIZE);
ret->msg = 0;
return ret;
}
void
socket_consume_msg (Socket * s)
{
int n;
if (!s->msg)
return;
ipc_consume_message_in_slide(s->read_buf);
s->msg = ipc_check_for_message_in_slide (s->read_buf);
}
void
socket_pre_select (Socket * s, fd_set * rfds, fd_set * wfds)
{
char buf[1024];
int n;
/*Server socket */
if (SOCKET_IS_LISTENER (s))
{
FD_SET (s->fd, rfds);
return;
}
if (!SLIDE_EMPTY (s->write_buf))
FD_SET (s->fd, wfds);
if (!SLIDE_FULL (s->read_buf))
FD_SET (s->fd, rfds);
}
int
socket_post_select (Socket * s, fd_set * rfds, fd_set * wfds)
{
char buf[1024];
int n;
int error=0;
if ((!SLIDE_EMPTY (s->write_buf)) && FD_ISSET (s->fd, wfds))
{
n =
(SLIDE_BYTES (s->write_buf) >
MAX_TXN) ? MAX_TXN : SLIDE_BYTES (s->write_buf);
n = wrap_write (s->fd, SLIDE_RPTR (s->write_buf), n);
if (n > 0)
slide_consume (s->write_buf, n);
if (n<0) error=-1;
}
if (!SLIDE_FULL (s->read_buf) && FD_ISSET (s->fd, rfds))
{
n =
(SLIDE_SPACE (s->read_buf) >
MAX_TXN) ? MAX_TXN : SLIDE_SPACE (s->read_buf);
n = wrap_read (s->fd, SLIDE_WPTR (s->read_buf), n);
if (n > 0)
slide_added (s->read_buf, n);
if (n<0) error=-1;
}
s->msg = ipc_check_for_message_in_slide (s->read_buf);
return error;
}
int
socket_write (Socket * s, void *buf, int len)
{
int n;
slide_expand (s->write_buf, len);
memcpy (SLIDE_WPTR (s->write_buf), buf, len);
slide_added (s->write_buf, len);
n =
(SLIDE_BYTES (s->write_buf) >
MAX_TXN) ? MAX_TXN : SLIDE_BYTES (s->write_buf);
n = wrap_write (s->fd, SLIDE_RPTR (s->write_buf), n);
{
uint8_t *c=SLIDE_RPTR(s->write_buf);
}
if (n > 0)
slide_consume (s->write_buf, n);
if (n<0) return -1;
return len;
}
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