gri3-wm/libi3/ipc_connect.c

59 lines
1.4 KiB
C

/*
* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
* © 2009 Michael Stapelberg and contributors (see also: LICENSE)
*
*/
#include "libi3.h"
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <string.h>
#include <err.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
/*
* Connects to the i3 IPC socket and returns the file descriptor for the
* socket. die()s if anything goes wrong.
*
*/
int ipc_connect(const char *socket_path) {
char *path = NULL;
if (socket_path != NULL) {
path = sstrdup(socket_path);
}
if (path == NULL) {
if ((path = getenv("I3SOCK")) != NULL) {
path = sstrdup(path);
}
}
if (path == NULL) {
path = root_atom_contents("I3_SOCKET_PATH", NULL, 0);
}
if (path == NULL) {
path = sstrdup("/tmp/i3-ipc.sock");
}
int sockfd = socket(AF_LOCAL, SOCK_STREAM, 0);
if (sockfd == -1)
err(EXIT_FAILURE, "Could not create socket");
(void)fcntl(sockfd, F_SETFD, FD_CLOEXEC);
struct sockaddr_un addr;
memset(&addr, 0, sizeof(struct sockaddr_un));
addr.sun_family = AF_LOCAL;
strncpy(addr.sun_path, 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 on socket %s", path);
free(path);
return sockfd;
}