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/*
* 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;
}
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