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/* $OpenBSD: notify.c,v 1.36 2020/05/21 07:24:13 nicm Exp $ */
/*
* Copyright (c) 2012 George Nachman <tmux@georgester.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/queue.h>
#include <stdlib.h>
#include <string.h>
#include "tmux.h"
struct notify_entry {
const char *name;
struct client *client;
struct session *session;
struct window *window;
int pane;
struct cmd_find_state fs;
};
static void
notify_hook_formats(struct cmdq_state *state, struct session *s,
struct window *w, int pane)
{
if (s != NULL) {
cmdq_add_format(state, "hook_session", "$%u", s->id);
cmdq_add_format(state, "hook_session_name", "%s", s->name);
}
if (w != NULL) {
cmdq_add_format(state, "hook_window", "@%u", w->id);
cmdq_add_format(state, "hook_window_name", "%s", w->name);
}
if (pane != -1)
cmdq_add_format(state, "hook_pane", "%%%d", pane);
}
static void
notify_insert_hook(struct cmdq_item *item, struct notify_entry *ne)
{
struct cmd_find_state fs;
struct options *oo;
struct cmdq_item *new_item;
struct cmdq_state *new_state;
struct session *s = ne->session;
struct window *w = ne->window;
struct options_entry *o;
struct options_array_item *a;
struct cmd_list *cmdlist;
log_debug("%s: %s", __func__, ne->name);
cmd_find_clear_state(&fs, 0);
if (cmd_find_empty_state(&ne->fs) || !cmd_find_valid_state(&ne->fs))
cmd_find_from_nothing(&fs, 0);
else
cmd_find_copy_state(&fs, &ne->fs);
if (fs.s == NULL)
oo = global_s_options;
else
oo = fs.s->options;
o = options_get(oo, ne->name);
if (o == NULL && fs.wp != NULL) {
oo = fs.wp->options;
o = options_get(oo, ne->name);
}
if (o == NULL && fs.wl != NULL) {
oo = fs.wl->window->options;
o = options_get(oo, ne->name);
}
if (o == NULL)
return;
new_state = cmdq_new_state(&fs, NULL, CMDQ_STATE_NOHOOKS);
cmdq_add_format(new_state, "hook", "%s", ne->name);
notify_hook_formats(new_state, s, w, ne->pane);
a = options_array_first(o);
while (a != NULL) {
cmdlist = options_array_item_value(a)->cmdlist;
if (cmdlist != NULL) {
new_item = cmdq_get_command(cmdlist, new_state);
item = cmdq_insert_after(item, new_item);
}
a = options_array_next(a);
}
cmdq_free_state(new_state);
}
static enum cmd_retval
notify_callback(struct cmdq_item *item, void *data)
{
struct notify_entry *ne = data;
log_debug("%s: %s", __func__, ne->name);
if (strcmp(ne->name, "pane-mode-changed") == 0)
control_notify_pane_mode_changed(ne->pane);
if (strcmp(ne->name, "window-layout-changed") == 0)
control_notify_window_layout_changed(ne->window);
if (strcmp(ne->name, "window-pane-changed") == 0)
control_notify_window_pane_changed(ne->window);
if (strcmp(ne->name, "window-unlinked") == 0)
control_notify_window_unlinked(ne->session, ne->window);
if (strcmp(ne->name, "window-linked") == 0)
control_notify_window_linked(ne->session, ne->window);
if (strcmp(ne->name, "window-renamed") == 0)
control_notify_window_renamed(ne->window);
if (strcmp(ne->name, "client-session-changed") == 0)
control_notify_client_session_changed(ne->client);
if (strcmp(ne->name, "session-renamed") == 0)
control_notify_session_renamed(ne->session);
if (strcmp(ne->name, "session-created") == 0)
control_notify_session_created(ne->session);
if (strcmp(ne->name, "session-closed") == 0)
control_notify_session_closed(ne->session);
if (strcmp(ne->name, "session-window-changed") == 0)
control_notify_session_window_changed(ne->session);
notify_insert_hook(item, ne);
if (ne->client != NULL)
server_client_unref(ne->client);
if (ne->session != NULL)
session_remove_ref(ne->session, __func__);
if (ne->window != NULL)
window_remove_ref(ne->window, __func__);
if (ne->fs.s != NULL)
session_remove_ref(ne->fs.s, __func__);
free((void *)ne->name);
free(ne);
return (CMD_RETURN_NORMAL);
}
static void
notify_add(const char *name, struct cmd_find_state *fs, struct client *c,
struct session *s, struct window *w, struct window_pane *wp)
{
struct notify_entry *ne;
struct cmdq_item *item;
item = cmdq_running(NULL);
if (item != NULL && (cmdq_get_flags(item) & CMDQ_STATE_NOHOOKS))
return;
ne = xcalloc(1, sizeof *ne);
ne->name = xstrdup(name);
ne->client = c;
ne->session = s;
ne->window = w;
if (wp != NULL)
ne->pane = wp->id;
else
ne->pane = -1;
if (c != NULL)
c->references++;
if (s != NULL)
session_add_ref(s, __func__);
if (w != NULL)
window_add_ref(w, __func__);
cmd_find_copy_state(&ne->fs, fs);
if (ne->fs.s != NULL) /* cmd_find_valid_state needs session */
session_add_ref(ne->fs.s, __func__);
cmdq_append(NULL, cmdq_get_callback(notify_callback, ne));
}
void
notify_hook(struct cmdq_item *item, const char *name)
{
struct cmd_find_state *target = cmdq_get_target(item);
struct notify_entry ne;
memset(&ne, 0, sizeof ne);
ne.name = name;
cmd_find_copy_state(&ne.fs, target);
ne.client = cmdq_get_client(item);
ne.session = target->s;
ne.window = target->w;
ne.pane = target->wp->id;
notify_insert_hook(item, &ne);
}
void
notify_client(const char *name, struct client *c)
{
struct cmd_find_state fs;
cmd_find_from_client(&fs, c, 0);
notify_add(name, &fs, c, NULL, NULL, NULL);
}
void
notify_session(const char *name, struct session *s)
{
struct cmd_find_state fs;
if (session_alive(s))
cmd_find_from_session(&fs, s, 0);
else
cmd_find_from_nothing(&fs, 0);
notify_add(name, &fs, NULL, s, NULL, NULL);
}
void
notify_winlink(const char *name, struct winlink *wl)
{
struct cmd_find_state fs;
cmd_find_from_winlink(&fs, wl, 0);
notify_add(name, &fs, NULL, wl->session, wl->window, NULL);
}
void
notify_session_window(const char *name, struct session *s, struct window *w)
{
struct cmd_find_state fs;
cmd_find_from_session_window(&fs, s, w, 0);
notify_add(name, &fs, NULL, s, w, NULL);
}
void
notify_window(const char *name, struct window *w)
{
struct cmd_find_state fs;
cmd_find_from_window(&fs, w, 0);
notify_add(name, &fs, NULL, NULL, w, NULL);
}
void
notify_pane(const char *name, struct window_pane *wp)
{
struct cmd_find_state fs;
cmd_find_from_pane(&fs, wp, 0);
notify_add(name, &fs, NULL, NULL, NULL, wp);
}
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