awesome/awesome-client-common.c

86 lines
2.4 KiB
C

/*
* awesome-client-common.c - awesome client, communicate with socket, common functions
*
* Copyright © 2007 Julien Danjou <julien@danjou.info>
* Copyright © 2007 daniel@brinkers.de
*
* 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.
*
* 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <sys/socket.h>
#include <sys/un.h>
#include "awesome-client.h"
#include "util.h"
#define CONTROL_UNIX_SOCKET_PATH ".awesome_ctl."
struct sockaddr_un *
get_client_addr(const char *display)
{
char *homedir, *tmp;
const char *real_display = NULL;
ssize_t path_len;
struct sockaddr_un *addr;
addr = p_new(struct sockaddr_un, 1);
homedir = getenv("HOME");
if(a_strlen(display))
{
if((tmp = strchr(display, ':')))
real_display = tmp + 1;
else
real_display = display;
if((tmp = strrchr(display, '.')))
*tmp = '\0';
}
/* a_strlen(display) because we strcat on display and
* + 2 for / and \0 */
path_len = a_strlen(homedir) + a_strlen(CONTROL_UNIX_SOCKET_PATH)
+ (a_strlen(display) ? (a_strlen(real_display)) : 1) + 2;
if(path_len >= ssizeof(addr->sun_path))
{
fprintf(stderr, "error: path of control UNIX domain socket is too long");
return NULL;
}
a_strcpy(addr->sun_path, path_len, homedir);
a_strcat(addr->sun_path, path_len, "/");
a_strcat(addr->sun_path, path_len, CONTROL_UNIX_SOCKET_PATH);
if(a_strlen(display))
a_strcat(addr->sun_path, path_len, real_display);
else
a_strcat(addr->sun_path, path_len, "0");
addr->sun_family = AF_UNIX;
return addr;
}
int
get_client_socket(void)
{
int csfd;
csfd = socket(AF_UNIX, SOCK_DGRAM, 0);
if(csfd < 0)
perror("error opening UNIX domain socket");
return csfd;
}