69 lines
2.0 KiB
C
69 lines
2.0 KiB
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>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Formats a message (payload) of the given size and type and sends it to i3 via
|
||
|
|
* the given socket file descriptor.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
void ipc_send_message(int sockfd, uint32_t message_size,
|
||
|
|
uint32_t message_type, uint8_t *payload) {
|
||
|
|
int buffer_size = strlen("i3-ipc") + sizeof(uint32_t) + sizeof(uint32_t) + message_size;
|
||
|
|
char msg[buffer_size];
|
||
|
|
char *walk = msg;
|
||
|
|
|
||
|
|
strcpy(walk, "i3-ipc");
|
||
|
|
walk += strlen("i3-ipc");
|
||
|
|
memcpy(walk, &message_size, sizeof(uint32_t));
|
||
|
|
walk += sizeof(uint32_t);
|
||
|
|
memcpy(walk, &message_type, sizeof(uint32_t));
|
||
|
|
walk += sizeof(uint32_t);
|
||
|
|
memcpy(walk, payload, message_size);
|
||
|
|
|
||
|
|
int sent_bytes = 0;
|
||
|
|
int bytes_to_go = buffer_size;
|
||
|
|
while (sent_bytes < bytes_to_go) {
|
||
|
|
int n = write(sockfd, msg + sent_bytes, bytes_to_go);
|
||
|
|
if (n == -1)
|
||
|
|
err(EXIT_FAILURE, "write() failed");
|
||
|
|
|
||
|
|
sent_bytes += n;
|
||
|
|
bytes_to_go -= n;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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;
|
||
|
|
strcpy(addr.sun_path, socket_path);
|
||
|
|
if (connect(sockfd, (const struct sockaddr*)&addr, sizeof(struct sockaddr_un)) < 0)
|
||
|
|
err(EXIT_FAILURE, "Could not connect to i3");
|
||
|
|
|
||
|
|
return sockfd;
|
||
|
|
}
|