1210 lines
32 KiB
C
1210 lines
32 KiB
C
/*
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* vim:ts=4:sw=4:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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* © 2009 Michael Stapelberg and contributors (see also: LICENSE)
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*
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* ipc.c: UNIX domain socket IPC (initialization, client handling, protocol).
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*
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*/
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#include "all.h"
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#include "yajl_utils.h"
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#include <ev.h>
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#include <fcntl.h>
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#include <libgen.h>
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#include <locale.h>
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#include <stdint.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <unistd.h>
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#include <yajl/yajl_gen.h>
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#include <yajl/yajl_parse.h>
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char *current_socketpath = NULL;
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TAILQ_HEAD(ipc_client_head, ipc_client)
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all_clients = TAILQ_HEAD_INITIALIZER(all_clients);
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/*
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* Puts the given socket file descriptor into non-blocking mode or dies if
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* setting O_NONBLOCK failed. Non-blocking sockets are a good idea for our
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* IPC model because we should by no means block the window manager.
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*
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*/
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static void set_nonblock(int sockfd) {
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int flags = fcntl(sockfd, F_GETFL, 0);
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if (flags & O_NONBLOCK) {
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return;
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}
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flags |= O_NONBLOCK;
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if (fcntl(sockfd, F_SETFL, flags) < 0)
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err(-1, "Could not set O_NONBLOCK");
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}
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static void ipc_client_timeout(EV_P_ ev_timer *w, int revents);
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static void ipc_socket_writeable_cb(EV_P_ struct ev_io *w, int revents);
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static ev_tstamp kill_timeout = 10.0;
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void ipc_set_kill_timeout(ev_tstamp new) {
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kill_timeout = new;
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}
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/*
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* Try to write the contents of the pending buffer to the client's subscription
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* socket. Will set, reset or clear the timeout and io write callbacks depending
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* on the result of the write operation.
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*
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*/
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static void ipc_push_pending(ipc_client *client) {
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const ssize_t result = writeall_nonblock(client->fd, client->buffer, client->buffer_size);
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if (result < 0) {
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return;
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}
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if ((size_t)result == client->buffer_size) {
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/* Everything was written successfully: clear the timer and stop the io
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* callback. */
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FREE(client->buffer);
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client->buffer_size = 0;
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if (client->timeout) {
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ev_timer_stop(main_loop, client->timeout);
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FREE(client->timeout);
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}
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ev_io_stop(main_loop, client->write_callback);
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return;
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}
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/* Otherwise, make sure that the io callback is enabled and create a new
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* timer if needed. */
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ev_io_start(main_loop, client->write_callback);
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if (!client->timeout) {
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struct ev_timer *timeout = scalloc(1, sizeof(struct ev_timer));
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ev_timer_init(timeout, ipc_client_timeout, kill_timeout, 0.);
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timeout->data = client;
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client->timeout = timeout;
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ev_set_priority(timeout, EV_MINPRI);
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ev_timer_start(main_loop, client->timeout);
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} else if (result > 0) {
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/* Keep the old timeout when nothing is written. Otherwise, we would
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* keep a dead connection by continuously renewing its timeouts. */
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ev_timer_stop(main_loop, client->timeout);
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ev_timer_set(client->timeout, kill_timeout, 0.0);
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ev_timer_start(main_loop, client->timeout);
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}
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if (result == 0) {
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return;
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}
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/* Shift the buffer to the left and reduce the allocated space. */
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client->buffer_size -= (size_t)result;
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memmove(client->buffer, client->buffer + result, client->buffer_size);
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client->buffer = srealloc(client->buffer, client->buffer_size);
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}
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/*
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* Given a message and a message type, create the corresponding header, merge it
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* with the message and append it to the given client's output buffer. Also,
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* send the message if the client's buffer was empty.
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*
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*/
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static void ipc_send_client_message(ipc_client *client, size_t size, const uint8_t *payload) {
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const i3_ipc_header_t header = {
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.magic = {'i', '3', '-', 'i', 'p', 'c'},
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.size = size};
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const size_t header_size = sizeof(i3_ipc_header_t);
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const size_t message_size = header_size + size;
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const bool push_now = (client->buffer_size == 0);
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client->buffer = srealloc(client->buffer, client->buffer_size + message_size);
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memcpy(client->buffer + client->buffer_size, ((void *)&header), header_size);
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memcpy(client->buffer + client->buffer_size + header_size, payload, size);
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client->buffer_size += message_size;
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if (push_now) {
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ipc_push_pending(client);
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}
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}
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static void free_ipc_client(ipc_client *client, int exempt_fd) {
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if (client->fd != exempt_fd) {
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DLOG("Disconnecting client on fd %d\n", client->fd);
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close(client->fd);
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}
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ev_io_stop(main_loop, client->read_callback);
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FREE(client->read_callback);
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ev_io_stop(main_loop, client->write_callback);
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FREE(client->write_callback);
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if (client->timeout) {
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ev_timer_stop(main_loop, client->timeout);
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FREE(client->timeout);
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}
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free(client->buffer);
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for (int i = 0; i < client->num_events; i++) {
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free(client->events[i]);
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}
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free(client->events);
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TAILQ_REMOVE(&all_clients, client, clients);
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free(client);
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}
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/*
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* Sends the specified event to all IPC clients which are currently connected
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* and subscribed to this kind of event.
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*
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*/
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void ipc_send_event(const char *event, uint32_t message_type, const char *payload) {
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ipc_client *current;
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TAILQ_FOREACH (current, &all_clients, clients) {
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for (int i = 0; i < current->num_events; i++) {
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if (strcasecmp(current->events[i], event) == 0) {
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ipc_send_client_message(current, strlen(payload), (uint8_t *)payload);
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break;
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}
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}
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}
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}
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/*
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* For shutdown events, we send the reason for the shutdown.
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*/
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static void ipc_send_shutdown_event(shutdown_reason_t reason) {
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yajl_gen gen = ygenalloc();
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y(map_open);
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ystr("change");
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if (reason == SHUTDOWN_REASON_RESTART) {
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ystr("restart");
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} else if (reason == SHUTDOWN_REASON_EXIT) {
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ystr("exit");
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}
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y(map_close);
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const unsigned char *payload;
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ylength length;
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y(get_buf, &payload, &length);
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ipc_send_event("shutdown", I3_IPC_EVENT_SHUTDOWN, (const char *)payload);
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y(free);
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}
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/*
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* Calls shutdown() on each socket and closes it. This function is to be called
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* when exiting or restarting only!
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*
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* exempt_fd is never closed. Set to -1 to close all fds.
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*
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*/
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void ipc_shutdown(shutdown_reason_t reason, int exempt_fd) {
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ipc_send_shutdown_event(reason);
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ipc_client *current;
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while (!TAILQ_EMPTY(&all_clients)) {
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current = TAILQ_FIRST(&all_clients);
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if (current->fd != exempt_fd) {
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shutdown(current->fd, SHUT_RDWR);
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}
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free_ipc_client(current, exempt_fd);
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}
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}
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/*
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* Executes the given command.
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*
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*/
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IPC_HANDLER(run_command) {
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/* To get a properly terminated buffer, we copy
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* message_size bytes out of the buffer */
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char *command = sstrndup((const char *)message, message_size);
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LOG("IPC: received: *%.4000s*\n", command);
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yajl_gen gen = yajl_gen_alloc(NULL);
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CommandResult *result = parse_command(command, gen, client);
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free(command);
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if (result->needs_tree_render)
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tree_render();
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command_result_free(result);
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const unsigned char *reply;
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ylength length;
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yajl_gen_get_buf(gen, &reply, &length);
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ipc_send_client_message(client, length, (const uint8_t *)reply);
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yajl_gen_free(gen);
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}
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static void dump_rect(yajl_gen gen, const char *name, Rect r) {
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ystr(name);
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y(map_open);
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ystr("x");
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y(integer, r.x);
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ystr("y");
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y(integer, r.y);
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ystr("width");
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y(integer, r.width);
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ystr("height");
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y(integer, r.height);
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y(map_close);
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}
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static void dump_event_state_mask(yajl_gen gen, Binding *bind) {
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y(array_open);
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for (int i = 0; i < 20; i++) {
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if (bind->event_state_mask & (1 << i)) {
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switch (1 << i) {
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case XCB_KEY_BUT_MASK_SHIFT:
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ystr("shift");
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break;
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case XCB_KEY_BUT_MASK_LOCK:
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ystr("lock");
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break;
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case XCB_KEY_BUT_MASK_CONTROL:
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ystr("ctrl");
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break;
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case XCB_KEY_BUT_MASK_MOD_1:
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ystr("Mod1");
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break;
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case XCB_KEY_BUT_MASK_MOD_2:
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ystr("Mod2");
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break;
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case XCB_KEY_BUT_MASK_MOD_3:
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ystr("Mod3");
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break;
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case XCB_KEY_BUT_MASK_MOD_4:
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ystr("Mod4");
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break;
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case XCB_KEY_BUT_MASK_MOD_5:
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ystr("Mod5");
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break;
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case XCB_KEY_BUT_MASK_BUTTON_1:
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ystr("Button1");
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break;
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case XCB_KEY_BUT_MASK_BUTTON_2:
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ystr("Button2");
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break;
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case XCB_KEY_BUT_MASK_BUTTON_3:
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ystr("Button3");
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break;
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case XCB_KEY_BUT_MASK_BUTTON_4:
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ystr("Button4");
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break;
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case XCB_KEY_BUT_MASK_BUTTON_5:
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ystr("Button5");
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break;
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case (I3_XKB_GROUP_MASK_1 << 16):
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ystr("Group1");
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break;
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case (I3_XKB_GROUP_MASK_2 << 16):
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ystr("Group2");
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break;
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case (I3_XKB_GROUP_MASK_3 << 16):
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ystr("Group3");
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break;
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case (I3_XKB_GROUP_MASK_4 << 16):
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ystr("Group4");
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break;
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}
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}
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}
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y(array_close);
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}
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static void dump_binding(yajl_gen gen, Binding *bind) {
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y(map_open);
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ystr("input_code");
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y(integer, bind->keycode);
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ystr("input_type");
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ystr((const char *)(bind->input_type == B_KEYBOARD ? "keyboard" : "mouse"));
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ystr("symbol");
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if (bind->symbol == NULL)
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y(null);
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else
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ystr(bind->symbol);
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ystr("command");
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ystr(bind->command);
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// This key is only provided for compatibility, new programs should use
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// event_state_mask instead.
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ystr("mods");
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dump_event_state_mask(gen, bind);
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ystr("event_state_mask");
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dump_event_state_mask(gen, bind);
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y(map_close);
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}
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void dump_node(yajl_gen gen, struct Con *con, bool inplace_restart) {
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y(map_open);
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ystr("id");
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y(integer, (uintptr_t)con);
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ystr("type");
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switch (con->type) {
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case CT_ROOT:
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ystr("root");
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break;
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||
case CT_OUTPUT:
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ystr("output");
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break;
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||
case CT_CON:
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||
ystr("con");
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break;
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||
case CT_FLOATING_CON:
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ystr("floating_con");
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break;
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case CT_WORKSPACE:
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ystr("workspace");
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break;
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||
case CT_DOCKAREA:
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ystr("dockarea");
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break;
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}
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||
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/* provided for backwards compatibility only. */
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ystr("orientation");
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if (!con_is_split(con))
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ystr("none");
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else {
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if (con_orientation(con) == HORIZ)
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ystr("horizontal");
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else
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ystr("vertical");
|
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}
|
||
|
||
ystr("scratchpad_state");
|
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switch (con->scratchpad_state) {
|
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case SCRATCHPAD_NONE:
|
||
ystr("none");
|
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break;
|
||
case SCRATCHPAD_FRESH:
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||
ystr("fresh");
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break;
|
||
case SCRATCHPAD_CHANGED:
|
||
ystr("changed");
|
||
break;
|
||
}
|
||
|
||
ystr("percent");
|
||
if (con->percent == 0.0)
|
||
y(null);
|
||
else
|
||
y(double, con->percent);
|
||
|
||
ystr("urgent");
|
||
y(bool, con->urgent);
|
||
|
||
ystr("marks");
|
||
y(array_open);
|
||
mark_t *mark;
|
||
TAILQ_FOREACH (mark, &(con->marks_head), marks) {
|
||
ystr(mark->name);
|
||
}
|
||
y(array_close);
|
||
|
||
ystr("focused");
|
||
y(bool, (con == focused));
|
||
|
||
if (con->type != CT_ROOT && con->type != CT_OUTPUT) {
|
||
ystr("output");
|
||
ystr(con_get_output(con)->name);
|
||
}
|
||
|
||
ystr("layout");
|
||
switch (con->layout) {
|
||
case L_DEFAULT:
|
||
DLOG("About to dump layout=default, this is a bug in the code.\n");
|
||
assert(false);
|
||
break;
|
||
case L_SPLITV:
|
||
ystr("splitv");
|
||
break;
|
||
case L_SPLITH:
|
||
ystr("splith");
|
||
break;
|
||
case L_STACKED:
|
||
ystr("stacked");
|
||
break;
|
||
case L_TABBED:
|
||
ystr("tabbed");
|
||
break;
|
||
case L_DOCKAREA:
|
||
ystr("dockarea");
|
||
break;
|
||
case L_OUTPUT:
|
||
ystr("output");
|
||
break;
|
||
}
|
||
|
||
ystr("workspace_layout");
|
||
switch (con->workspace_layout) {
|
||
case L_DEFAULT:
|
||
ystr("default");
|
||
break;
|
||
case L_STACKED:
|
||
ystr("stacked");
|
||
break;
|
||
case L_TABBED:
|
||
ystr("tabbed");
|
||
break;
|
||
default:
|
||
DLOG("About to dump workspace_layout=%d (none of default/stacked/tabbed), this is a bug.\n", con->workspace_layout);
|
||
assert(false);
|
||
break;
|
||
}
|
||
|
||
ystr("last_split_layout");
|
||
switch (con->layout) {
|
||
case L_SPLITV:
|
||
ystr("splitv");
|
||
break;
|
||
default:
|
||
ystr("splith");
|
||
break;
|
||
}
|
||
|
||
ystr("border");
|
||
switch (con->border_style) {
|
||
case BS_NORMAL:
|
||
ystr("normal");
|
||
break;
|
||
case BS_NONE:
|
||
ystr("none");
|
||
break;
|
||
case BS_PIXEL:
|
||
ystr("pixel");
|
||
break;
|
||
}
|
||
|
||
ystr("current_border_width");
|
||
y(integer, con->current_border_width);
|
||
|
||
dump_rect(gen, "rect", con->rect);
|
||
dump_rect(gen, "deco_rect", con->deco_rect);
|
||
dump_rect(gen, "window_rect", con->window_rect);
|
||
dump_rect(gen, "geometry", con->geometry);
|
||
|
||
ystr("name");
|
||
if (con->window && con->window->name)
|
||
ystr(i3string_as_utf8(con->window->name));
|
||
else if (con->name != NULL)
|
||
ystr(con->name);
|
||
else
|
||
y(null);
|
||
|
||
if (con->title_format != NULL) {
|
||
ystr("title_format");
|
||
ystr(con->title_format);
|
||
}
|
||
|
||
if (con->type == CT_WORKSPACE) {
|
||
ystr("num");
|
||
y(integer, con->num);
|
||
}
|
||
|
||
ystr("window");
|
||
if (con->window)
|
||
y(integer, con->window->id);
|
||
else
|
||
y(null);
|
||
|
||
ystr("window_type");
|
||
if (con->window) {
|
||
if (con->window->window_type == A__NET_WM_WINDOW_TYPE_NORMAL) {
|
||
ystr("normal");
|
||
} else if (con->window->window_type == A__NET_WM_WINDOW_TYPE_DOCK) {
|
||
ystr("dock");
|
||
} else if (con->window->window_type == A__NET_WM_WINDOW_TYPE_DIALOG) {
|
||
ystr("dialog");
|
||
} else if (con->window->window_type == A__NET_WM_WINDOW_TYPE_UTILITY) {
|
||
ystr("utility");
|
||
} else if (con->window->window_type == A__NET_WM_WINDOW_TYPE_TOOLBAR) {
|
||
ystr("toolbar");
|
||
} else if (con->window->window_type == A__NET_WM_WINDOW_TYPE_SPLASH) {
|
||
ystr("splash");
|
||
} else if (con->window->window_type == A__NET_WM_WINDOW_TYPE_MENU) {
|
||
ystr("menu");
|
||
} else if (con->window->window_type == A__NET_WM_WINDOW_TYPE_DROPDOWN_MENU) {
|
||
ystr("dropdown_menu");
|
||
} else if (con->window->window_type == A__NET_WM_WINDOW_TYPE_POPUP_MENU) {
|
||
ystr("popup_menu");
|
||
} else if (con->window->window_type == A__NET_WM_WINDOW_TYPE_TOOLTIP) {
|
||
ystr("tooltip");
|
||
} else if (con->window->window_type == A__NET_WM_WINDOW_TYPE_NOTIFICATION) {
|
||
ystr("notification");
|
||
} else {
|
||
ystr("unknown");
|
||
}
|
||
} else
|
||
y(null);
|
||
|
||
if (con->window && !inplace_restart) {
|
||
/* Window properties are useless to preserve when restarting because
|
||
* they will be queried again anyway. However, for i3-save-tree(1),
|
||
* they are very useful and save i3-save-tree dealing with X11. */
|
||
ystr("window_properties");
|
||
y(map_open);
|
||
|
||
#define DUMP_PROPERTY(key, prop_name) \
|
||
do { \
|
||
if (con->window->prop_name != NULL) { \
|
||
ystr(key); \
|
||
ystr(con->window->prop_name); \
|
||
} \
|
||
} while (0)
|
||
|
||
DUMP_PROPERTY("class", class_class);
|
||
DUMP_PROPERTY("instance", class_instance);
|
||
DUMP_PROPERTY("window_role", role);
|
||
|
||
if (con->window->name != NULL) {
|
||
ystr("title");
|
||
ystr(i3string_as_utf8(con->window->name));
|
||
}
|
||
|
||
ystr("transient_for");
|
||
if (con->window->transient_for == XCB_NONE)
|
||
y(null);
|
||
else
|
||
y(integer, con->window->transient_for);
|
||
|
||
y(map_close);
|
||
}
|
||
|
||
ystr("nodes");
|
||
y(array_open);
|
||
Con *node;
|
||
if (con->type != CT_DOCKAREA || !inplace_restart) {
|
||
TAILQ_FOREACH (node, &(con->nodes_head), nodes) {
|
||
dump_node(gen, node, inplace_restart);
|
||
}
|
||
}
|
||
y(array_close);
|
||
|
||
ystr("floating_nodes");
|
||
y(array_open);
|
||
TAILQ_FOREACH (node, &(con->floating_head), floating_windows) {
|
||
dump_node(gen, node, inplace_restart);
|
||
}
|
||
y(array_close);
|
||
|
||
ystr("focus");
|
||
y(array_open);
|
||
TAILQ_FOREACH (node, &(con->focus_head), focused) {
|
||
y(integer, (uintptr_t)node);
|
||
}
|
||
y(array_close);
|
||
|
||
ystr("fullscreen_mode");
|
||
y(integer, con->fullscreen_mode);
|
||
|
||
ystr("sticky");
|
||
y(bool, con->sticky);
|
||
|
||
ystr("floating");
|
||
switch (con->floating) {
|
||
case FLOATING_AUTO_OFF:
|
||
ystr("auto_off");
|
||
break;
|
||
case FLOATING_AUTO_ON:
|
||
ystr("auto_on");
|
||
break;
|
||
case FLOATING_USER_OFF:
|
||
ystr("user_off");
|
||
break;
|
||
case FLOATING_USER_ON:
|
||
ystr("user_on");
|
||
break;
|
||
}
|
||
|
||
ystr("swallows");
|
||
y(array_open);
|
||
Match *match;
|
||
TAILQ_FOREACH (match, &(con->swallow_head), matches) {
|
||
/* We will generate a new restart_mode match specification after this
|
||
* loop, so skip this one. */
|
||
if (match->restart_mode)
|
||
continue;
|
||
y(map_open);
|
||
if (match->dock != M_DONTCHECK) {
|
||
ystr("dock");
|
||
y(integer, match->dock);
|
||
ystr("insert_where");
|
||
y(integer, match->insert_where);
|
||
}
|
||
|
||
#define DUMP_REGEX(re_name) \
|
||
do { \
|
||
if (match->re_name != NULL) { \
|
||
ystr(#re_name); \
|
||
ystr(match->re_name->pattern); \
|
||
} \
|
||
} while (0)
|
||
|
||
DUMP_REGEX(class);
|
||
DUMP_REGEX(instance);
|
||
DUMP_REGEX(window_role);
|
||
DUMP_REGEX(title);
|
||
|
||
#undef DUMP_REGEX
|
||
y(map_close);
|
||
}
|
||
|
||
if (inplace_restart) {
|
||
if (con->window != NULL) {
|
||
y(map_open);
|
||
ystr("id");
|
||
y(integer, con->window->id);
|
||
ystr("restart_mode");
|
||
y(bool, true);
|
||
y(map_close);
|
||
}
|
||
}
|
||
y(array_close);
|
||
|
||
if (inplace_restart && con->window != NULL) {
|
||
ystr("depth");
|
||
y(integer, con->depth);
|
||
}
|
||
|
||
if (inplace_restart && con->type == CT_ROOT && previous_workspace_name) {
|
||
ystr("previous_workspace_name");
|
||
ystr(previous_workspace_name);
|
||
}
|
||
|
||
y(map_close);
|
||
}
|
||
|
||
static void dump_bar_bindings(yajl_gen gen, Barconfig *config) {
|
||
if (TAILQ_EMPTY(&(config->bar_bindings)))
|
||
return;
|
||
|
||
ystr("bindings");
|
||
y(array_open);
|
||
|
||
struct Barbinding *current;
|
||
TAILQ_FOREACH (current, &(config->bar_bindings), bindings) {
|
||
y(map_open);
|
||
|
||
ystr("input_code");
|
||
y(integer, current->input_code);
|
||
ystr("command");
|
||
ystr(current->command);
|
||
ystr("release");
|
||
y(bool, current->release == B_UPON_KEYRELEASE);
|
||
|
||
y(map_close);
|
||
}
|
||
|
||
y(array_close);
|
||
}
|
||
|
||
static char *canonicalize_output_name(char *name) {
|
||
/* Do not canonicalize special output names. */
|
||
if (strcasecmp(name, "primary") == 0) {
|
||
return name;
|
||
}
|
||
Output *output = get_output_by_name(name, false);
|
||
return output ? output_primary_name(output) : name;
|
||
}
|
||
|
||
static void dump_bar_config(yajl_gen gen, Barconfig *config) {
|
||
y(map_open);
|
||
|
||
ystr("id");
|
||
ystr(config->id);
|
||
|
||
if (config->num_outputs > 0) {
|
||
ystr("outputs");
|
||
y(array_open);
|
||
for (int c = 0; c < config->num_outputs; c++) {
|
||
/* Convert monitor names (RandR ≥ 1.5) or output names
|
||
* (RandR < 1.5) into monitor names. This way, existing
|
||
* configs which use output names transparently keep
|
||
* working. */
|
||
ystr(canonicalize_output_name(config->outputs[c]));
|
||
}
|
||
y(array_close);
|
||
}
|
||
|
||
if (!TAILQ_EMPTY(&(config->tray_outputs))) {
|
||
ystr("tray_outputs");
|
||
y(array_open);
|
||
|
||
struct tray_output_t *tray_output;
|
||
TAILQ_FOREACH (tray_output, &(config->tray_outputs), tray_outputs) {
|
||
ystr(canonicalize_output_name(tray_output->output));
|
||
}
|
||
|
||
y(array_close);
|
||
}
|
||
|
||
#define YSTR_IF_SET(name) \
|
||
do { \
|
||
if (config->name) { \
|
||
ystr(#name); \
|
||
ystr(config->name); \
|
||
} \
|
||
} while (0)
|
||
|
||
ystr("tray_padding");
|
||
y(integer, config->tray_padding);
|
||
|
||
YSTR_IF_SET(socket_path);
|
||
|
||
ystr("mode");
|
||
switch (config->mode) {
|
||
case M_HIDE:
|
||
ystr("hide");
|
||
break;
|
||
case M_INVISIBLE:
|
||
ystr("invisible");
|
||
break;
|
||
case M_DOCK:
|
||
default:
|
||
ystr("dock");
|
||
break;
|
||
}
|
||
|
||
ystr("hidden_state");
|
||
switch (config->hidden_state) {
|
||
case S_SHOW:
|
||
ystr("show");
|
||
break;
|
||
case S_HIDE:
|
||
default:
|
||
ystr("hide");
|
||
break;
|
||
}
|
||
|
||
ystr("modifier");
|
||
y(integer, config->modifier);
|
||
|
||
dump_bar_bindings(gen, config);
|
||
|
||
ystr("position");
|
||
if (config->position == P_BOTTOM)
|
||
ystr("bottom");
|
||
else
|
||
ystr("top");
|
||
|
||
YSTR_IF_SET(status_command);
|
||
YSTR_IF_SET(font);
|
||
|
||
if (config->separator_symbol) {
|
||
ystr("separator_symbol");
|
||
ystr(config->separator_symbol);
|
||
}
|
||
|
||
ystr("workspace_buttons");
|
||
y(bool, !config->hide_workspace_buttons);
|
||
|
||
ystr("workspace_min_width");
|
||
y(integer, config->workspace_min_width);
|
||
|
||
ystr("strip_workspace_numbers");
|
||
y(bool, config->strip_workspace_numbers);
|
||
|
||
ystr("strip_workspace_name");
|
||
y(bool, config->strip_workspace_name);
|
||
|
||
ystr("binding_mode_indicator");
|
||
y(bool, !config->hide_binding_mode_indicator);
|
||
|
||
ystr("verbose");
|
||
y(bool, config->verbose);
|
||
|
||
#undef YSTR_IF_SET
|
||
#define YSTR_IF_SET(name) \
|
||
do { \
|
||
if (config->colors.name) { \
|
||
ystr(#name); \
|
||
ystr(config->colors.name); \
|
||
} \
|
||
} while (0)
|
||
|
||
ystr("colors");
|
||
y(map_open);
|
||
YSTR_IF_SET(background);
|
||
YSTR_IF_SET(statusline);
|
||
YSTR_IF_SET(separator);
|
||
YSTR_IF_SET(focused_background);
|
||
YSTR_IF_SET(focused_statusline);
|
||
YSTR_IF_SET(focused_separator);
|
||
YSTR_IF_SET(focused_workspace_border);
|
||
YSTR_IF_SET(focused_workspace_bg);
|
||
YSTR_IF_SET(focused_workspace_text);
|
||
YSTR_IF_SET(active_workspace_border);
|
||
YSTR_IF_SET(active_workspace_bg);
|
||
YSTR_IF_SET(active_workspace_text);
|
||
YSTR_IF_SET(inactive_workspace_border);
|
||
YSTR_IF_SET(inactive_workspace_bg);
|
||
YSTR_IF_SET(inactive_workspace_text);
|
||
YSTR_IF_SET(urgent_workspace_border);
|
||
YSTR_IF_SET(urgent_workspace_bg);
|
||
YSTR_IF_SET(urgent_workspace_text);
|
||
YSTR_IF_SET(binding_mode_border);
|
||
YSTR_IF_SET(binding_mode_bg);
|
||
YSTR_IF_SET(binding_mode_text);
|
||
y(map_close);
|
||
|
||
y(map_close);
|
||
#undef YSTR_IF_SET
|
||
}
|
||
|
||
struct sync_state {
|
||
char *last_key;
|
||
uint32_t rnd;
|
||
xcb_window_t window;
|
||
};
|
||
|
||
/*
|
||
* Handler for activity on a client connection, receives a message from a
|
||
* client.
|
||
*
|
||
* For now, the maximum message size is 2048. I’m not sure for what the
|
||
* IPC interface will be used in the future, thus I’m not implementing a
|
||
* mechanism for arbitrarily long messages, as it seems like overkill
|
||
* at the moment.
|
||
*
|
||
*/
|
||
static void ipc_receive_message(EV_P_ struct ev_io *w, int revents) {
|
||
uint32_t message_length;
|
||
uint8_t *message = NULL;
|
||
ipc_client *client = (ipc_client *)w->data;
|
||
assert(client->fd == w->fd);
|
||
|
||
int ret = ipc_recv_message(w->fd, &message_length, &message);
|
||
/* EOF or other error */
|
||
if (ret < 0) {
|
||
/* Was this a spurious read? See ev(3) */
|
||
if (ret == -1 && errno == EAGAIN) {
|
||
FREE(message);
|
||
return;
|
||
}
|
||
|
||
/* If not, there was some kind of error. We don’t bother and close the
|
||
* connection. Delete the client from the list of clients. */
|
||
free_ipc_client(client, -1);
|
||
FREE(message);
|
||
return;
|
||
}
|
||
|
||
handle_run_command(client, message, 0, message_length);
|
||
|
||
FREE(message);
|
||
}
|
||
|
||
static void ipc_client_timeout(EV_P_ ev_timer *w, int revents) {
|
||
/* No need to be polite and check for writeability, the other callback would
|
||
* have been called by now. */
|
||
ipc_client *client = (ipc_client *)w->data;
|
||
|
||
char *cmdline = NULL;
|
||
#if defined(__linux__) && defined(SO_PEERCRED)
|
||
struct ucred peercred;
|
||
socklen_t so_len = sizeof(peercred);
|
||
if (getsockopt(client->fd, SOL_SOCKET, SO_PEERCRED, &peercred, &so_len) != 0) {
|
||
goto end;
|
||
}
|
||
char *exepath;
|
||
sasprintf(&exepath, "/proc/%d/cmdline", peercred.pid);
|
||
|
||
int fd = open(exepath, O_RDONLY);
|
||
free(exepath);
|
||
if (fd == -1) {
|
||
goto end;
|
||
}
|
||
char buf[512] = {'\0'}; /* cut off cmdline for the error message. */
|
||
const ssize_t n = read(fd, buf, sizeof(buf));
|
||
close(fd);
|
||
if (n < 0) {
|
||
goto end;
|
||
}
|
||
for (char *walk = buf; walk < buf + n - 1; walk++) {
|
||
if (*walk == '\0') {
|
||
*walk = ' ';
|
||
}
|
||
}
|
||
cmdline = buf;
|
||
|
||
if (cmdline) {
|
||
ELOG("client %p with pid %d and cmdline '%s' on fd %d timed out, killing\n", client, peercred.pid, cmdline, client->fd);
|
||
}
|
||
|
||
end:
|
||
#endif
|
||
if (!cmdline) {
|
||
ELOG("client %p on fd %d timed out, killing\n", client, client->fd);
|
||
}
|
||
|
||
free_ipc_client(client, -1);
|
||
}
|
||
|
||
static void ipc_socket_writeable_cb(EV_P_ ev_io *w, int revents) {
|
||
DLOG("fd %d writeable\n", w->fd);
|
||
ipc_client *client = (ipc_client *)w->data;
|
||
|
||
/* If this callback is called then there should be a corresponding active
|
||
* timer. */
|
||
assert(client->timeout != NULL);
|
||
ipc_push_pending(client);
|
||
}
|
||
|
||
/*
|
||
* Handler for activity on the listening socket, meaning that a new client
|
||
* has just connected and we should accept() him. Sets up the event handler
|
||
* for activity on the new connection and inserts the file descriptor into
|
||
* the list of clients.
|
||
*
|
||
*/
|
||
void ipc_new_client(EV_P_ struct ev_io *w, int revents) {
|
||
struct sockaddr_un peer;
|
||
socklen_t len = sizeof(struct sockaddr_un);
|
||
int fd;
|
||
if ((fd = accept(w->fd, (struct sockaddr *)&peer, &len)) < 0) {
|
||
if (errno != EINTR) {
|
||
perror("accept()");
|
||
}
|
||
return;
|
||
}
|
||
|
||
/* Close this file descriptor on exec() */
|
||
(void)fcntl(fd, F_SETFD, FD_CLOEXEC);
|
||
|
||
ipc_new_client_on_fd(EV_A_ fd);
|
||
}
|
||
|
||
/*
|
||
* ipc_new_client_on_fd() only sets up the event handler
|
||
* for activity on the new connection and inserts the file descriptor into
|
||
* the list of clients.
|
||
*
|
||
* This variant is useful for the inherited IPC connection when restarting.
|
||
*
|
||
*/
|
||
ipc_client *ipc_new_client_on_fd(EV_P_ int fd) {
|
||
set_nonblock(fd);
|
||
|
||
ipc_client *client = scalloc(1, sizeof(ipc_client));
|
||
client->fd = fd;
|
||
|
||
client->read_callback = scalloc(1, sizeof(struct ev_io));
|
||
client->read_callback->data = client;
|
||
ev_io_init(client->read_callback, ipc_receive_message, fd, EV_READ);
|
||
ev_io_start(EV_A_ client->read_callback);
|
||
|
||
client->write_callback = scalloc(1, sizeof(struct ev_io));
|
||
client->write_callback->data = client;
|
||
ev_io_init(client->write_callback, ipc_socket_writeable_cb, fd, EV_WRITE);
|
||
|
||
DLOG("IPC: new client connected on fd %d\n", fd);
|
||
TAILQ_INSERT_TAIL(&all_clients, client, clients);
|
||
return client;
|
||
}
|
||
|
||
/*
|
||
* Creates the UNIX domain socket at the given path, sets it to non-blocking
|
||
* mode, bind()s and listen()s on it.
|
||
*
|
||
*/
|
||
int ipc_create_socket(const char *filename) {
|
||
int sockfd;
|
||
|
||
FREE(current_socketpath);
|
||
|
||
char *resolved = resolve_tilde(filename);
|
||
DLOG("Creating IPC-socket at %s\n", resolved);
|
||
char *copy = sstrdup(resolved);
|
||
const char *dir = dirname(copy);
|
||
if (!path_exists(dir))
|
||
mkdirp(dir, DEFAULT_DIR_MODE);
|
||
free(copy);
|
||
|
||
/* Unlink the unix domain socket before */
|
||
unlink(resolved);
|
||
|
||
if ((sockfd = socket(AF_LOCAL, SOCK_STREAM, 0)) < 0) {
|
||
perror("socket()");
|
||
free(resolved);
|
||
return -1;
|
||
}
|
||
|
||
(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, resolved, sizeof(addr.sun_path) - 1);
|
||
if (bind(sockfd, (struct sockaddr *)&addr, sizeof(struct sockaddr_un)) < 0) {
|
||
perror("bind()");
|
||
free(resolved);
|
||
return -1;
|
||
}
|
||
|
||
set_nonblock(sockfd);
|
||
|
||
if (listen(sockfd, 5) < 0) {
|
||
perror("listen()");
|
||
free(resolved);
|
||
return -1;
|
||
}
|
||
|
||
current_socketpath = resolved;
|
||
return sockfd;
|
||
}
|
||
|
||
/*
|
||
* Generates a json workspace event. Returns a dynamically allocated yajl
|
||
* generator. Free with yajl_gen_free().
|
||
*/
|
||
yajl_gen ipc_marshal_workspace_event(const char *change, Con *current, Con *old) {
|
||
setlocale(LC_NUMERIC, "C");
|
||
yajl_gen gen = ygenalloc();
|
||
|
||
y(map_open);
|
||
|
||
ystr("change");
|
||
ystr(change);
|
||
|
||
ystr("current");
|
||
if (current == NULL)
|
||
y(null);
|
||
else
|
||
dump_node(gen, current, false);
|
||
|
||
ystr("old");
|
||
if (old == NULL)
|
||
y(null);
|
||
else
|
||
dump_node(gen, old, false);
|
||
|
||
y(map_close);
|
||
|
||
setlocale(LC_NUMERIC, "");
|
||
|
||
return gen;
|
||
}
|
||
|
||
/*
|
||
* For the workspace events we send, along with the usual "change" field, also
|
||
* the workspace container in "current". For focus events, we send the
|
||
* previously focused workspace in "old".
|
||
*/
|
||
void ipc_send_workspace_event(const char *change, Con *current, Con *old) {
|
||
yajl_gen gen = ipc_marshal_workspace_event(change, current, old);
|
||
|
||
const unsigned char *payload;
|
||
ylength length;
|
||
y(get_buf, &payload, &length);
|
||
|
||
ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, (const char *)payload);
|
||
|
||
y(free);
|
||
}
|
||
|
||
/*
|
||
* For the window events we send, along the usual "change" field,
|
||
* also the window container, in "container".
|
||
*/
|
||
void ipc_send_window_event(const char *property, Con *con) {
|
||
DLOG("Issue IPC window %s event (con = %p, window = 0x%08x)\n",
|
||
property, con, (con->window ? con->window->id : XCB_WINDOW_NONE));
|
||
|
||
setlocale(LC_NUMERIC, "C");
|
||
yajl_gen gen = ygenalloc();
|
||
|
||
y(map_open);
|
||
|
||
ystr("change");
|
||
ystr(property);
|
||
|
||
ystr("container");
|
||
dump_node(gen, con, false);
|
||
|
||
y(map_close);
|
||
|
||
const unsigned char *payload;
|
||
ylength length;
|
||
y(get_buf, &payload, &length);
|
||
|
||
ipc_send_event("window", I3_IPC_EVENT_WINDOW, (const char *)payload);
|
||
y(free);
|
||
setlocale(LC_NUMERIC, "");
|
||
}
|
||
|
||
/*
|
||
* For the barconfig update events, we send the serialized barconfig.
|
||
*/
|
||
void ipc_send_barconfig_update_event(Barconfig *barconfig) {
|
||
DLOG("Issue barconfig_update event for id = %s\n", barconfig->id);
|
||
setlocale(LC_NUMERIC, "C");
|
||
yajl_gen gen = ygenalloc();
|
||
|
||
dump_bar_config(gen, barconfig);
|
||
|
||
const unsigned char *payload;
|
||
ylength length;
|
||
y(get_buf, &payload, &length);
|
||
|
||
ipc_send_event("barconfig_update", I3_IPC_EVENT_BARCONFIG_UPDATE, (const char *)payload);
|
||
y(free);
|
||
setlocale(LC_NUMERIC, "");
|
||
}
|
||
|
||
/*
|
||
* For the binding events, we send the serialized binding struct.
|
||
*/
|
||
void ipc_send_binding_event(const char *event_type, Binding *bind) {
|
||
DLOG("Issue IPC binding %s event (sym = %s, code = %d)\n", event_type, bind->symbol, bind->keycode);
|
||
|
||
setlocale(LC_NUMERIC, "C");
|
||
|
||
yajl_gen gen = ygenalloc();
|
||
|
||
y(map_open);
|
||
|
||
ystr("change");
|
||
ystr(event_type);
|
||
|
||
ystr("binding");
|
||
dump_binding(gen, bind);
|
||
|
||
y(map_close);
|
||
|
||
const unsigned char *payload;
|
||
ylength length;
|
||
y(get_buf, &payload, &length);
|
||
|
||
ipc_send_event("binding", I3_IPC_EVENT_BINDING, (const char *)payload);
|
||
|
||
y(free);
|
||
setlocale(LC_NUMERIC, "");
|
||
}
|
||
|
||
/*
|
||
* Sends a restart reply to the IPC client on the specified fd.
|
||
*/
|
||
void ipc_confirm_restart(ipc_client *client) {
|
||
DLOG("ipc_confirm_restart(fd %d)\n", client->fd);
|
||
static const char *reply = "[{\"success\":true}]";
|
||
ipc_send_client_message(client, strlen(reply), (const uint8_t *)reply);
|
||
ipc_push_pending(client);
|
||
}
|