gri3-wm/i3-input/ipc.c

/*
 * vim:ts=8:expandtab
 *
 * i3 - an improved dynamic tiling window manager
 *
 * © 2009 Michael Stapelberg and contributors
 *
 * See file LICENSE for license information.
 *
 */
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include <err.h>

/*
 * Connects to the i3 IPC socket and returns the file descriptor for the
 * socket. die()s if anything goes wrong.
 *
 */
int connect_ipc(char *socket_path) {
	int sockfd = socket(AF_LOCAL, SOCK_STREAM, 0);
        if (sockfd == -1)
                err(EXIT_FAILURE, "Could not create socket");

        struct sockaddr_un addr;
        memset(&addr, 0, sizeof(struct sockaddr_un));
        addr.sun_family = AF_LOCAL;
        strncpy(addr.sun_path, socket_path, sizeof(addr.sun_path) - 1);
        if (connect(sockfd, (const struct sockaddr*)&addr, sizeof(struct sockaddr_un)) < 0)
                err(EXIT_FAILURE, "Could not connect to i3");

	return sockfd;
}