/*

 * Copyright (C) 2013 Martin Willi

 *

 * Copyright (C) secunet Security Networks AG

 *

 * This program 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 2 of the License, or (at your

 * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.

 *

 * This program 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.

 */

#include <library.h>

#include <errno.h>

#include <unistd.h>

#include <limits.h>

#include "stream_unix.h"

/**

 * See header

 */

int stream_parse_uri_unix(char *uri, struct sockaddr_un *addr)

{

  if (!strpfx(uri, "unix://"))

  {

    return -1;

  }

  uri += strlen("unix://");

  memset(addr, 0, sizeof(*addr));

  addr->sun_family = AF_UNIX;

  strncpy(addr->sun_path, uri, sizeof(addr->sun_path));

  addr->sun_path[sizeof(addr->sun_path)-1] = '\0';

  return offsetof(struct sockaddr_un, sun_path) + strlen(addr->sun_path);

}

/**

 * See header

 */

stream_t *stream_create_unix(char *uri)

{

  struct sockaddr_un addr;

  int len, fd;

  len = stream_parse_uri_unix(uri, &addr);

  if (len == -1)

  {

    DBG1(DBG_NET, "invalid stream URI: '%s'", uri);

    return NULL;

  }

  fd = socket(AF_UNIX, SOCK_STREAM, 0);

  if (fd < 0)

  {

    DBG1(DBG_NET, "opening socket '%s' failed: %s", uri, strerror(errno));

    return NULL;

  }

  if (connect(fd, (struct sockaddr*)&addr, len) < 0)

  {

    DBG1(DBG_NET, "connecting to '%s' failed: %s", uri, strerror(errno));

    close(fd);

    return NULL;

  }

  return stream_create_from_fd(fd);

}