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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999-2002, 2004-2012 Free Software Foundation, Inc.
GNU Mailutils 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, or (at your option)
any later version.
GNU Mailutils 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 GNU Mailutils. If not, see <http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <mailutils/types.h>
#include <mailutils/alloc.h>
#include <mailutils/error.h>
#include <mailutils/errno.h>
#include <mailutils/nls.h>
#include <mailutils/stream.h>
#include <mailutils/sys/file_stream.h>
static int
_socket_open (mu_stream_t stream)
{
struct _mu_file_stream *s = (struct _mu_file_stream *) stream;
int fd;
struct sockaddr_un addr;
if (!s)
return EINVAL;
fd = socket (PF_UNIX, SOCK_STREAM, 0);
if (fd < 0)
return errno;
memset (&addr, 0, sizeof addr);
addr.sun_family = AF_UNIX;
strncpy (addr.sun_path, s->filename, sizeof addr.sun_path - 1);
addr.sun_path[sizeof addr.sun_path - 1] = 0;
if (connect (fd, (struct sockaddr *) &addr, sizeof(addr)))
{
close (fd);
return errno;
}
s->fd = fd;
return 0;
}
int
_socket_shutdown (mu_stream_t stream, int how)
{
struct _mu_file_stream *s = (struct _mu_file_stream *) stream;
int flag;
switch (how)
{
case MU_STREAM_READ:
flag = SHUT_RD;
break;
case MU_STREAM_WRITE:
flag = SHUT_WR;
}
if (shutdown (s->fd, flag))
return errno;
return 0;
}
int
mu_socket_stream_create (mu_stream_t *pstream, const char *filename, int flags)
{
int rc;
mu_stream_t transport;
int need_cache;
struct _mu_file_stream *fstr;
need_cache = flags & MU_STREAM_SEEK;
if (need_cache && (flags & MU_STREAM_WRITE))
/* Write caches are not supported */
return EINVAL;
/* Create transport stream. */
rc = _mu_file_stream_create (&fstr, sizeof (*fstr),
filename, -1,
flags & ~MU_STREAM_SEEK);
if (rc)
return rc;
fstr->stream.open = _socket_open;
fstr->stream.shutdown = _socket_shutdown;
transport = (mu_stream_t) fstr;
/* Wrap it in cache, if required */
if (need_cache)
{
mu_stream_t str;
rc = mu_rdcache_stream_create (&str, transport, flags);
mu_stream_unref (transport);
if (rc)
return rc;
transport = str;
}
rc = mu_stream_open (transport);
if (rc)
mu_stream_unref (transport);
else
*pstream = transport;
return rc;
}
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