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tmux/server-client.c
nicm b55f0ac6b9 Leave the hardware cursor at the position of the selected line in choose 
modes and current editing position and at the command prompt. It is
invisible but this is helpful for people using screen readers. GitHub
issue 2970.
2021-11-15 10:58:13 +00:00

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/* $OpenBSD$ */
/*
* Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.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/ioctl.h>
#include <sys/uio.h>
#include <errno.h>
#include <event.h>
#include <fcntl.h>
#include <imsg.h>
#include <paths.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "tmux.h"
static void server_client_free(int, short, void *);
static void server_client_check_pane_resize(struct window_pane *);
static void server_client_check_pane_buffer(struct window_pane *);
static void server_client_check_window_resize(struct window *);
static key_code server_client_check_mouse(struct client *, struct key_event *);
static void server_client_repeat_timer(int, short, void *);
static void server_client_click_timer(int, short, void *);
static void server_client_check_exit(struct client *);
static void server_client_check_redraw(struct client *);
static void server_client_check_modes(struct client *);
static void server_client_set_title(struct client *);
static void server_client_reset_state(struct client *);
static int server_client_assume_paste(struct session *);
static void server_client_update_latest(struct client *);
static void server_client_dispatch(struct imsg *, void *);
static void server_client_dispatch_command(struct client *, struct imsg *);
static void server_client_dispatch_identify(struct client *, struct imsg *);
static void server_client_dispatch_shell(struct client *);
/* Compare client windows. */
static int
server_client_window_cmp(struct client_window *cw1,
struct client_window *cw2)
{
if (cw1->window < cw2->window)
return (-1);
if (cw1->window > cw2->window)
return (1);
return (0);
}
RB_GENERATE(client_windows, client_window, entry, server_client_window_cmp);
/* Number of attached clients. */
u_int
server_client_how_many(void)
{
struct client *c;
u_int n;
n = 0;
TAILQ_FOREACH(c, &clients, entry) {
if (c->session != NULL && (~c->flags & CLIENT_UNATTACHEDFLAGS))
n++;
}
return (n);
}
/* Overlay timer callback. */
static void
server_client_overlay_timer(__unused int fd, __unused short events, void *data)
{
server_client_clear_overlay(data);
}
/* Set an overlay on client. */
void
server_client_set_overlay(struct client *c, u_int delay,
overlay_check_cb checkcb, overlay_mode_cb modecb,
overlay_draw_cb drawcb, overlay_key_cb keycb, overlay_free_cb freecb,
overlay_resize_cb resizecb, void *data)
{
struct timeval tv;
if (c->overlay_draw != NULL)
server_client_clear_overlay(c);
tv.tv_sec = delay / 1000;
tv.tv_usec = (delay % 1000) * 1000L;
if (event_initialized(&c->overlay_timer))
evtimer_del(&c->overlay_timer);
evtimer_set(&c->overlay_timer, server_client_overlay_timer, c);
if (delay != 0)
evtimer_add(&c->overlay_timer, &tv);
c->overlay_check = checkcb;
c->overlay_mode = modecb;
c->overlay_draw = drawcb;
c->overlay_key = keycb;
c->overlay_free = freecb;
c->overlay_resize = resizecb;
c->overlay_data = data;
if (c->overlay_check == NULL)
c->tty.flags |= TTY_FREEZE;
if (c->overlay_mode == NULL)
c->tty.flags |= TTY_NOCURSOR;
server_redraw_client(c);
}
/* Clear overlay mode on client. */
void
server_client_clear_overlay(struct client *c)
{
if (c->overlay_draw == NULL)
return;
if (event_initialized(&c->overlay_timer))
evtimer_del(&c->overlay_timer);
if (c->overlay_free != NULL)
c->overlay_free(c, c->overlay_data);
c->overlay_check = NULL;
c->overlay_mode = NULL;
c->overlay_draw = NULL;
c->overlay_key = NULL;
c->overlay_free = NULL;
c->overlay_data = NULL;
c->tty.flags &= ~(TTY_FREEZE|TTY_NOCURSOR);
server_redraw_client(c);
}
/*
* Given overlay position and dimensions, return parts of the input range which
* are visible.
*/
void
server_client_overlay_range(u_int x, u_int y, u_int sx, u_int sy, u_int px,
u_int py, u_int nx, struct overlay_ranges *r)
{
u_int ox, onx;
/* Return up to 2 ranges. */
r->px[2] = 0;
r->nx[2] = 0;
/* Trivial case of no overlap in the y direction. */
if (py < y || py > y + sy - 1) {
r->px[0] = px;
r->nx[0] = nx;
r->px[1] = 0;
r->nx[1] = 0;
return;
}
/* Visible bit to the left of the popup. */
if (px < x) {
r->px[0] = px;
r->nx[0] = x - px;
if (r->nx[0] > nx)
r->nx[0] = nx;
} else {
r->px[0] = 0;
r->nx[0] = 0;
}
/* Visible bit to the right of the popup. */
ox = x + sx;
if (px > ox)
ox = px;
onx = px + nx;
if (onx > ox) {
r->px[1] = ox;
r->nx[1] = onx - ox;
} else {
r->px[1] = 0;
r->nx[1] = 0;
}
}
/* Check if this client is inside this server. */
int
server_client_check_nested(struct client *c)
{
struct environ_entry *envent;
struct window_pane *wp;
envent = environ_find(c->environ, "TMUX");
if (envent == NULL || *envent->value == '\0')
return (0);
RB_FOREACH(wp, window_pane_tree, &all_window_panes) {
if (strcmp(wp->tty, c->ttyname) == 0)
return (1);
}
return (0);
}
/* Set client key table. */
void
server_client_set_key_table(struct client *c, const char *name)
{
if (name == NULL)
name = server_client_get_key_table(c);
key_bindings_unref_table(c->keytable);
c->keytable = key_bindings_get_table(name, 1);
c->keytable->references++;
}
/* Get default key table. */
const char *
server_client_get_key_table(struct client *c)
{
struct session *s = c->session;
const char *name;
if (s == NULL)
return ("root");
name = options_get_string(s->options, "key-table");
if (*name == '\0')
return ("root");
return (name);
}
/* Is this table the default key table? */
static int
server_client_is_default_key_table(struct client *c, struct key_table *table)
{
return (strcmp(table->name, server_client_get_key_table(c)) == 0);
}
/* Create a new client. */
struct client *
server_client_create(int fd)
{
struct client *c;
setblocking(fd, 0);
c = xcalloc(1, sizeof *c);
c->references = 1;
c->peer = proc_add_peer(server_proc, fd, server_client_dispatch, c);
if (gettimeofday(&c->creation_time, NULL) != 0)
fatal("gettimeofday failed");
memcpy(&c->activity_time, &c->creation_time, sizeof c->activity_time);
c->environ = environ_create();
c->fd = -1;
c->out_fd = -1;
c->queue = cmdq_new();
RB_INIT(&c->windows);
RB_INIT(&c->files);
c->tty.sx = 80;
c->tty.sy = 24;
status_init(c);
c->flags |= CLIENT_FOCUSED;
c->keytable = key_bindings_get_table("root", 1);
c->keytable->references++;
evtimer_set(&c->repeat_timer, server_client_repeat_timer, c);
evtimer_set(&c->click_timer, server_client_click_timer, c);
TAILQ_INSERT_TAIL(&clients, c, entry);
log_debug("new client %p", c);
return (c);
}
/* Open client terminal if needed. */
int
server_client_open(struct client *c, char **cause)
{
const char *ttynam = _PATH_TTY;
if (c->flags & CLIENT_CONTROL)
return (0);
if (strcmp(c->ttyname, ttynam) == 0||
((isatty(STDIN_FILENO) &&
(ttynam = ttyname(STDIN_FILENO)) != NULL &&
strcmp(c->ttyname, ttynam) == 0) ||
(isatty(STDOUT_FILENO) &&
(ttynam = ttyname(STDOUT_FILENO)) != NULL &&
strcmp(c->ttyname, ttynam) == 0) ||
(isatty(STDERR_FILENO) &&
(ttynam = ttyname(STDERR_FILENO)) != NULL &&
strcmp(c->ttyname, ttynam) == 0))) {
xasprintf(cause, "can't use %s", c->ttyname);
return (-1);
}
if (!(c->flags & CLIENT_TERMINAL)) {
*cause = xstrdup("not a terminal");
return (-1);
}
if (tty_open(&c->tty, cause) != 0)
return (-1);
return (0);
}
/* Lost an attached client. */
static void
server_client_attached_lost(struct client *c)
{
struct session *s;
struct window *w;
struct client *loop;
struct client *found;
log_debug("lost attached client %p", c);
/*
* By this point the session in the client has been cleared so walk all
* windows to find any with this client as the latest.
*/
RB_FOREACH(w, windows, &windows) {
if (w->latest != c)
continue;
found = NULL;
TAILQ_FOREACH(loop, &clients, entry) {
s = loop->session;
if (loop == c || s == NULL || s->curw->window != w)
continue;
if (found == NULL || timercmp(&loop->activity_time,
&found->activity_time, >))
found = loop;
}
if (found != NULL)
server_client_update_latest(found);
}
}
/* Set client session. */
void
server_client_set_session(struct client *c, struct session *s)
{
struct session *old = c->session;
if (s != NULL && c->session != NULL && c->session != s)
c->last_session = c->session;
else if (s == NULL)
c->last_session = NULL;
c->session = s;
c->flags |= CLIENT_FOCUSED;
if (old != NULL && old->curw != NULL)
window_update_focus(old->curw->window);
if (s != NULL) {
recalculate_sizes();
window_update_focus(s->curw->window);
session_update_activity(s, NULL);
gettimeofday(&s->last_attached_time, NULL);
s->curw->flags &= ~WINLINK_ALERTFLAGS;
s->curw->window->latest = c;
alerts_check_session(s);
tty_update_client_offset(c);
status_timer_start(c);
notify_client("client-session-changed", c);
server_redraw_client(c);
}
server_check_unattached();
server_update_socket();
}
/* Lost a client. */
void
server_client_lost(struct client *c)
{
struct client_file *cf, *cf1;
struct client_window *cw, *cw1;
c->flags |= CLIENT_DEAD;
server_client_clear_overlay(c);
status_prompt_clear(c);
status_message_clear(c);
RB_FOREACH_SAFE(cf, client_files, &c->files, cf1) {
cf->error = EINTR;
file_fire_done(cf);
}
RB_FOREACH_SAFE(cw, client_windows, &c->windows, cw1) {
RB_REMOVE(client_windows, &c->windows, cw);
free(cw);
}
TAILQ_REMOVE(&clients, c, entry);
log_debug("lost client %p", c);
if (c->flags & CLIENT_ATTACHED) {
server_client_attached_lost(c);
notify_client("client-detached", c);
}
if (c->flags & CLIENT_CONTROL)
control_stop(c);
if (c->flags & CLIENT_TERMINAL)
tty_free(&c->tty);
free(c->ttyname);
free(c->term_name);
free(c->term_type);
tty_term_free_list(c->term_caps, c->term_ncaps);
status_free(c);
free(c->title);
free((void *)c->cwd);
evtimer_del(&c->repeat_timer);
evtimer_del(&c->click_timer);
key_bindings_unref_table(c->keytable);
free(c->message_string);
if (event_initialized(&c->message_timer))
evtimer_del(&c->message_timer);
free(c->prompt_saved);
free(c->prompt_string);
free(c->prompt_buffer);
format_lost_client(c);
environ_free(c->environ);
proc_remove_peer(c->peer);
c->peer = NULL;
if (c->out_fd != -1)
close(c->out_fd);
if (c->fd != -1) {
close(c->fd);
c->fd = -1;
}
server_client_unref(c);
server_add_accept(0); /* may be more file descriptors now */
recalculate_sizes();
server_check_unattached();
server_update_socket();
}
/* Remove reference from a client. */
void
server_client_unref(struct client *c)
{
log_debug("unref client %p (%d references)", c, c->references);
c->references--;
if (c->references == 0)
event_once(-1, EV_TIMEOUT, server_client_free, c, NULL);
}
/* Free dead client. */
static void
server_client_free(__unused int fd, __unused short events, void *arg)
{
struct client *c = arg;
log_debug("free client %p (%d references)", c, c->references);
cmdq_free(c->queue);
if (c->references == 0) {
free((void *)c->name);
free(c);
}
}
/* Suspend a client. */
void
server_client_suspend(struct client *c)
{
struct session *s = c->session;
if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
return;
tty_stop_tty(&c->tty);
c->flags |= CLIENT_SUSPENDED;
proc_send(c->peer, MSG_SUSPEND, -1, NULL, 0);
}
/* Detach a client. */
void
server_client_detach(struct client *c, enum msgtype msgtype)
{
struct session *s = c->session;
if (s == NULL || (c->flags & CLIENT_NODETACHFLAGS))
return;
c->flags |= CLIENT_EXIT;
c->exit_type = CLIENT_EXIT_DETACH;
c->exit_msgtype = msgtype;
c->exit_session = xstrdup(s->name);
}
/* Execute command to replace a client. */
void
server_client_exec(struct client *c, const char *cmd)
{
struct session *s = c->session;
char *msg;
const char *shell;
size_t cmdsize, shellsize;
if (*cmd == '\0')
return;
cmdsize = strlen(cmd) + 1;
if (s != NULL)
shell = options_get_string(s->options, "default-shell");
else
shell = options_get_string(global_s_options, "default-shell");
if (!checkshell(shell))
shell = _PATH_BSHELL;
shellsize = strlen(shell) + 1;
msg = xmalloc(cmdsize + shellsize);
memcpy(msg, cmd, cmdsize);
memcpy(msg + cmdsize, shell, shellsize);
proc_send(c->peer, MSG_EXEC, -1, msg, cmdsize + shellsize);
free(msg);
}
/* Check for mouse keys. */
static key_code
server_client_check_mouse(struct client *c, struct key_event *event)
{
struct mouse_event *m = &event->m;
struct session *s = c->session;
struct winlink *wl;
struct window_pane *wp;
u_int x, y, b, sx, sy, px, py;
int ignore = 0;
key_code key;
struct timeval tv;
struct style_range *sr;
enum { NOTYPE,
MOVE,
DOWN,
UP,
DRAG,
WHEEL,
SECOND,
DOUBLE,
TRIPLE } type = NOTYPE;
enum { NOWHERE,
PANE,
STATUS,
STATUS_LEFT,
STATUS_RIGHT,
STATUS_DEFAULT,
BORDER } where = NOWHERE;
log_debug("%s mouse %02x at %u,%u (last %u,%u) (%d)", c->name, m->b,
m->x, m->y, m->lx, m->ly, c->tty.mouse_drag_flag);
/* What type of event is this? */
if (event->key == KEYC_DOUBLECLICK) {
type = DOUBLE;
x = m->x, y = m->y, b = m->b;
ignore = 1;
log_debug("double-click at %u,%u", x, y);
} else if ((m->sgr_type != ' ' &&
MOUSE_DRAG(m->sgr_b) &&
MOUSE_BUTTONS(m->sgr_b) == 3) ||
(m->sgr_type == ' ' &&
MOUSE_DRAG(m->b) &&
MOUSE_BUTTONS(m->b) == 3 &&
MOUSE_BUTTONS(m->lb) == 3)) {
type = MOVE;
x = m->x, y = m->y, b = 0;
log_debug("move at %u,%u", x, y);
} else if (MOUSE_DRAG(m->b)) {
type = DRAG;
if (c->tty.mouse_drag_flag) {
x = m->x, y = m->y, b = m->b;
if (x == m->lx && y == m->ly)
return (KEYC_UNKNOWN);
log_debug("drag update at %u,%u", x, y);
} else {
x = m->lx, y = m->ly, b = m->lb;
log_debug("drag start at %u,%u", x, y);
}
} else if (MOUSE_WHEEL(m->b)) {
type = WHEEL;
x = m->x, y = m->y, b = m->b;
log_debug("wheel at %u,%u", x, y);
} else if (MOUSE_RELEASE(m->b)) {
type = UP;
x = m->x, y = m->y, b = m->lb;
log_debug("up at %u,%u", x, y);
} else {
if (c->flags & CLIENT_DOUBLECLICK) {
evtimer_del(&c->click_timer);
c->flags &= ~CLIENT_DOUBLECLICK;
if (m->b == c->click_button) {
type = SECOND;
x = m->x, y = m->y, b = m->b;
log_debug("second-click at %u,%u", x, y);
c->flags |= CLIENT_TRIPLECLICK;
}
} else if (c->flags & CLIENT_TRIPLECLICK) {
evtimer_del(&c->click_timer);
c->flags &= ~CLIENT_TRIPLECLICK;
if (m->b == c->click_button) {
type = TRIPLE;
x = m->x, y = m->y, b = m->b;
log_debug("triple-click at %u,%u", x, y);
goto have_event;
}
} else {
type = DOWN;
x = m->x, y = m->y, b = m->b;
log_debug("down at %u,%u", x, y);
c->flags |= CLIENT_DOUBLECLICK;
}
if (KEYC_CLICK_TIMEOUT != 0) {
memcpy(&c->click_event, m, sizeof c->click_event);
c->click_button = m->b;
log_debug("click timer started");
tv.tv_sec = KEYC_CLICK_TIMEOUT / 1000;
tv.tv_usec = (KEYC_CLICK_TIMEOUT % 1000) * 1000L;
evtimer_del(&c->click_timer);
evtimer_add(&c->click_timer, &tv);
}
}
have_event:
if (type == NOTYPE)
return (KEYC_UNKNOWN);
/* Save the session. */
m->s = s->id;
m->w = -1;
m->ignore = ignore;
/* Is this on the status line? */
m->statusat = status_at_line(c);
m->statuslines = status_line_size(c);
if (m->statusat != -1 &&
y >= (u_int)m->statusat &&
y < m->statusat + m->statuslines) {
sr = status_get_range(c, x, y - m->statusat);
if (sr == NULL) {
where = STATUS_DEFAULT;
} else {
switch (sr->type) {
case STYLE_RANGE_NONE:
return (KEYC_UNKNOWN);
case STYLE_RANGE_LEFT:
where = STATUS_LEFT;
break;
case STYLE_RANGE_RIGHT:
where = STATUS_RIGHT;
break;
case STYLE_RANGE_WINDOW:
wl = winlink_find_by_index(&s->windows,
sr->argument);
if (wl == NULL)
return (KEYC_UNKNOWN);
m->w = wl->window->id;
where = STATUS;
break;
}
}
}
/* Not on status line. Adjust position and check for border or pane. */
if (where == NOWHERE) {
px = x;
if (m->statusat == 0 && y >= m->statuslines)
py = y - m->statuslines;
else if (m->statusat > 0 && y >= (u_int)m->statusat)
py = m->statusat - 1;
else
py = y;
tty_window_offset(&c->tty, &m->ox, &m->oy, &sx, &sy);
log_debug("mouse window @%u at %u,%u (%ux%u)",
s->curw->window->id, m->ox, m->oy, sx, sy);
if (px > sx || py > sy)
return (KEYC_UNKNOWN);
px = px + m->ox;
py = py + m->oy;
/* Try the pane borders if not zoomed. */
if (~s->curw->window->flags & WINDOW_ZOOMED) {
TAILQ_FOREACH(wp, &s->curw->window->panes, entry) {
if ((wp->xoff + wp->sx == px &&
wp->yoff <= 1 + py &&
wp->yoff + wp->sy >= py) ||
(wp->yoff + wp->sy == py &&
wp->xoff <= 1 + px &&
wp->xoff + wp->sx >= px))
break;
}
if (wp != NULL)
where = BORDER;
}
/* Otherwise try inside the pane. */
if (where == NOWHERE) {
wp = window_get_active_at(s->curw->window, px, py);
if (wp != NULL)
where = PANE;
else
return (KEYC_UNKNOWN);
}
if (where == PANE)
log_debug("mouse %u,%u on pane %%%u", x, y, wp->id);
else if (where == BORDER)
log_debug("mouse on pane %%%u border", wp->id);
m->wp = wp->id;
m->w = wp->window->id;
} else
m->wp = -1;
/* Stop dragging if needed. */
if (type != DRAG && type != WHEEL && c->tty.mouse_drag_flag) {
if (c->tty.mouse_drag_release != NULL)
c->tty.mouse_drag_release(c, m);
c->tty.mouse_drag_update = NULL;
c->tty.mouse_drag_release = NULL;
/*
* End a mouse drag by passing a MouseDragEnd key corresponding
* to the button that started the drag.
*/
switch (c->tty.mouse_drag_flag) {
case 1:
if (where == PANE)
key = KEYC_MOUSEDRAGEND1_PANE;
if (where == STATUS)
key = KEYC_MOUSEDRAGEND1_STATUS;
if (where == STATUS_LEFT)
key = KEYC_MOUSEDRAGEND1_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_MOUSEDRAGEND1_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_MOUSEDRAGEND1_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_MOUSEDRAGEND1_BORDER;
break;
case 2:
if (where == PANE)
key = KEYC_MOUSEDRAGEND2_PANE;
if (where == STATUS)
key = KEYC_MOUSEDRAGEND2_STATUS;
if (where == STATUS_LEFT)
key = KEYC_MOUSEDRAGEND2_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_MOUSEDRAGEND2_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_MOUSEDRAGEND2_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_MOUSEDRAGEND2_BORDER;
break;
case 3:
if (where == PANE)
key = KEYC_MOUSEDRAGEND3_PANE;
if (where == STATUS)
key = KEYC_MOUSEDRAGEND3_STATUS;
if (where == STATUS_LEFT)
key = KEYC_MOUSEDRAGEND3_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_MOUSEDRAGEND3_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_MOUSEDRAGEND3_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_MOUSEDRAGEND3_BORDER;
break;
default:
key = KEYC_MOUSE;
break;
}
c->tty.mouse_drag_flag = 0;
goto out;
}
/* Convert to a key binding. */
key = KEYC_UNKNOWN;
switch (type) {
case NOTYPE:
break;
case MOVE:
if (where == PANE)
key = KEYC_MOUSEMOVE_PANE;
if (where == STATUS)
key = KEYC_MOUSEMOVE_STATUS;
if (where == STATUS_LEFT)
key = KEYC_MOUSEMOVE_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_MOUSEMOVE_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_MOUSEMOVE_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_MOUSEMOVE_BORDER;
break;
case DRAG:
if (c->tty.mouse_drag_update != NULL)
key = KEYC_DRAGGING;
else {
switch (MOUSE_BUTTONS(b)) {
case 0:
if (where == PANE)
key = KEYC_MOUSEDRAG1_PANE;
if (where == STATUS)
key = KEYC_MOUSEDRAG1_STATUS;
if (where == STATUS_LEFT)
key = KEYC_MOUSEDRAG1_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_MOUSEDRAG1_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_MOUSEDRAG1_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_MOUSEDRAG1_BORDER;
break;
case 1:
if (where == PANE)
key = KEYC_MOUSEDRAG2_PANE;
if (where == STATUS)
key = KEYC_MOUSEDRAG2_STATUS;
if (where == STATUS_LEFT)
key = KEYC_MOUSEDRAG2_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_MOUSEDRAG2_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_MOUSEDRAG2_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_MOUSEDRAG2_BORDER;
break;
case 2:
if (where == PANE)
key = KEYC_MOUSEDRAG3_PANE;
if (where == STATUS)
key = KEYC_MOUSEDRAG3_STATUS;
if (where == STATUS_LEFT)
key = KEYC_MOUSEDRAG3_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_MOUSEDRAG3_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_MOUSEDRAG3_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_MOUSEDRAG3_BORDER;
break;
}
}
/*
* Begin a drag by setting the flag to a non-zero value that
* corresponds to the mouse button in use.
*/
c->tty.mouse_drag_flag = MOUSE_BUTTONS(b) + 1;
break;
case WHEEL:
if (MOUSE_BUTTONS(b) == MOUSE_WHEEL_UP) {
if (where == PANE)
key = KEYC_WHEELUP_PANE;
if (where == STATUS)
key = KEYC_WHEELUP_STATUS;
if (where == STATUS_LEFT)
key = KEYC_WHEELUP_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_WHEELUP_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_WHEELUP_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_WHEELUP_BORDER;
} else {
if (where == PANE)
key = KEYC_WHEELDOWN_PANE;
if (where == STATUS)
key = KEYC_WHEELDOWN_STATUS;
if (where == STATUS_LEFT)
key = KEYC_WHEELDOWN_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_WHEELDOWN_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_WHEELDOWN_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_WHEELDOWN_BORDER;
}
break;
case UP:
switch (MOUSE_BUTTONS(b)) {
case 0:
if (where == PANE)
key = KEYC_MOUSEUP1_PANE;
if (where == STATUS)
key = KEYC_MOUSEUP1_STATUS;
if (where == STATUS_LEFT)
key = KEYC_MOUSEUP1_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_MOUSEUP1_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_MOUSEUP1_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_MOUSEUP1_BORDER;
break;
case 1:
if (where == PANE)
key = KEYC_MOUSEUP2_PANE;
if (where == STATUS)
key = KEYC_MOUSEUP2_STATUS;
if (where == STATUS_LEFT)
key = KEYC_MOUSEUP2_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_MOUSEUP2_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_MOUSEUP2_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_MOUSEUP2_BORDER;
break;
case 2:
if (where == PANE)
key = KEYC_MOUSEUP3_PANE;
if (where == STATUS)
key = KEYC_MOUSEUP3_STATUS;
if (where == STATUS_LEFT)
key = KEYC_MOUSEUP3_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_MOUSEUP3_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_MOUSEUP3_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_MOUSEUP3_BORDER;
break;
}
break;
case DOWN:
switch (MOUSE_BUTTONS(b)) {
case 0:
if (where == PANE)
key = KEYC_MOUSEDOWN1_PANE;
if (where == STATUS)
key = KEYC_MOUSEDOWN1_STATUS;
if (where == STATUS_LEFT)
key = KEYC_MOUSEDOWN1_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_MOUSEDOWN1_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_MOUSEDOWN1_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_MOUSEDOWN1_BORDER;
break;
case 1:
if (where == PANE)
key = KEYC_MOUSEDOWN2_PANE;
if (where == STATUS)
key = KEYC_MOUSEDOWN2_STATUS;
if (where == STATUS_LEFT)
key = KEYC_MOUSEDOWN2_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_MOUSEDOWN2_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_MOUSEDOWN2_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_MOUSEDOWN2_BORDER;
break;
case 2:
if (where == PANE)
key = KEYC_MOUSEDOWN3_PANE;
if (where == STATUS)
key = KEYC_MOUSEDOWN3_STATUS;
if (where == STATUS_LEFT)
key = KEYC_MOUSEDOWN3_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_MOUSEDOWN3_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_MOUSEDOWN3_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_MOUSEDOWN3_BORDER;
break;
}
break;
case SECOND:
switch (MOUSE_BUTTONS(b)) {
case 0:
if (where == PANE)
key = KEYC_SECONDCLICK1_PANE;
if (where == STATUS)
key = KEYC_SECONDCLICK1_STATUS;
if (where == STATUS_LEFT)
key = KEYC_SECONDCLICK1_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_SECONDCLICK1_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_SECONDCLICK1_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_SECONDCLICK1_BORDER;
break;
case 1:
if (where == PANE)
key = KEYC_SECONDCLICK2_PANE;
if (where == STATUS)
key = KEYC_SECONDCLICK2_STATUS;
if (where == STATUS_LEFT)
key = KEYC_SECONDCLICK2_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_SECONDCLICK2_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_SECONDCLICK2_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_SECONDCLICK2_BORDER;
break;
case 2:
if (where == PANE)
key = KEYC_SECONDCLICK3_PANE;
if (where == STATUS)
key = KEYC_SECONDCLICK3_STATUS;
if (where == STATUS_LEFT)
key = KEYC_SECONDCLICK3_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_SECONDCLICK3_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_SECONDCLICK3_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_SECONDCLICK3_BORDER;
break;
}
break;
case DOUBLE:
switch (MOUSE_BUTTONS(b)) {
case 0:
if (where == PANE)
key = KEYC_DOUBLECLICK1_PANE;
if (where == STATUS)
key = KEYC_DOUBLECLICK1_STATUS;
if (where == STATUS_LEFT)
key = KEYC_DOUBLECLICK1_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_DOUBLECLICK1_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_DOUBLECLICK1_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_DOUBLECLICK1_BORDER;
break;
case 1:
if (where == PANE)
key = KEYC_DOUBLECLICK2_PANE;
if (where == STATUS)
key = KEYC_DOUBLECLICK2_STATUS;
if (where == STATUS_LEFT)
key = KEYC_DOUBLECLICK2_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_DOUBLECLICK2_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_DOUBLECLICK2_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_DOUBLECLICK2_BORDER;
break;
case 2:
if (where == PANE)
key = KEYC_DOUBLECLICK3_PANE;
if (where == STATUS)
key = KEYC_DOUBLECLICK3_STATUS;
if (where == STATUS_LEFT)
key = KEYC_DOUBLECLICK3_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_DOUBLECLICK3_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_DOUBLECLICK3_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_DOUBLECLICK3_BORDER;
break;
}
break;
case TRIPLE:
switch (MOUSE_BUTTONS(b)) {
case 0:
if (where == PANE)
key = KEYC_TRIPLECLICK1_PANE;
if (where == STATUS)
key = KEYC_TRIPLECLICK1_STATUS;
if (where == STATUS_LEFT)
key = KEYC_TRIPLECLICK1_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_TRIPLECLICK1_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_TRIPLECLICK1_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_TRIPLECLICK1_BORDER;
break;
case 1:
if (where == PANE)
key = KEYC_TRIPLECLICK2_PANE;
if (where == STATUS)
key = KEYC_TRIPLECLICK2_STATUS;
if (where == STATUS_LEFT)
key = KEYC_TRIPLECLICK2_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_TRIPLECLICK2_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_TRIPLECLICK2_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_TRIPLECLICK2_BORDER;
break;
case 2:
if (where == PANE)
key = KEYC_TRIPLECLICK3_PANE;
if (where == STATUS)
key = KEYC_TRIPLECLICK3_STATUS;
if (where == STATUS_LEFT)
key = KEYC_TRIPLECLICK3_STATUS_LEFT;
if (where == STATUS_RIGHT)
key = KEYC_TRIPLECLICK3_STATUS_RIGHT;
if (where == STATUS_DEFAULT)
key = KEYC_TRIPLECLICK3_STATUS_DEFAULT;
if (where == BORDER)
key = KEYC_TRIPLECLICK3_BORDER;
break;
}
break;
}
if (key == KEYC_UNKNOWN)
return (KEYC_UNKNOWN);
out:
/* Apply modifiers if any. */
if (b & MOUSE_MASK_META)
key |= KEYC_META;
if (b & MOUSE_MASK_CTRL)
key |= KEYC_CTRL;
if (b & MOUSE_MASK_SHIFT)
key |= KEYC_SHIFT;
if (log_get_level() != 0)
log_debug("mouse key is %s", key_string_lookup_key (key, 1));
return (key);
}
/* Is this fast enough to probably be a paste? */
static int
server_client_assume_paste(struct session *s)
{
struct timeval tv;
int t;
if ((t = options_get_number(s->options, "assume-paste-time")) == 0)
return (0);
timersub(&s->activity_time, &s->last_activity_time, &tv);
if (tv.tv_sec == 0 && tv.tv_usec < t * 1000) {
log_debug("session %s pasting (flag %d)", s->name,
!!(s->flags & SESSION_PASTING));
if (s->flags & SESSION_PASTING)
return (1);
s->flags |= SESSION_PASTING;
return (0);
}
log_debug("session %s not pasting", s->name);
s->flags &= ~SESSION_PASTING;
return (0);
}
/* Has the latest client changed? */
static void
server_client_update_latest(struct client *c)
{
struct window *w;
if (c->session == NULL)
return;
w = c->session->curw->window;
if (w->latest == c)
return;
w->latest = c;
if (options_get_number(w->options, "window-size") == WINDOW_SIZE_LATEST)
recalculate_size(w, 0);
notify_client("client-active", c);
}
/*
* Handle data key input from client. This owns and can modify the key event it
* is given and is responsible for freeing it.
*/
static enum cmd_retval
server_client_key_callback(struct cmdq_item *item, void *data)
{
struct client *c = cmdq_get_client(item);
struct key_event *event = data;
key_code key = event->key;
struct mouse_event *m = &event->m;
struct session *s = c->session;
struct winlink *wl;
struct window_pane *wp;
struct window_mode_entry *wme;
struct timeval tv;
struct key_table *table, *first;
struct key_binding *bd;
int xtimeout, flags;
struct cmd_find_state fs;
key_code key0;
/* Check the client is good to accept input. */
if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
goto out;
wl = s->curw;
/* Update the activity timer. */
if (gettimeofday(&c->activity_time, NULL) != 0)
fatal("gettimeofday failed");
session_update_activity(s, &c->activity_time);
/* Check for mouse keys. */
m->valid = 0;
if (key == KEYC_MOUSE || key == KEYC_DOUBLECLICK) {
if (c->flags & CLIENT_READONLY)
goto out;
key = server_client_check_mouse(c, event);
if (key == KEYC_UNKNOWN)
goto out;
m->valid = 1;
m->key = key;
/*
* Mouse drag is in progress, so fire the callback (now that
* the mouse event is valid).
*/
if ((key & KEYC_MASK_KEY) == KEYC_DRAGGING) {
c->tty.mouse_drag_update(c, m);
goto out;
}
event->key = key;
}
/* Find affected pane. */
if (!KEYC_IS_MOUSE(key) || cmd_find_from_mouse(&fs, m, 0) != 0)
cmd_find_from_client(&fs, c, 0);
wp = fs.wp;
/* Forward mouse keys if disabled. */
if (KEYC_IS_MOUSE(key) && !options_get_number(s->options, "mouse"))
goto forward_key;
/* Treat everything as a regular key when pasting is detected. */
if (!KEYC_IS_MOUSE(key) && server_client_assume_paste(s))
goto forward_key;
/*
* Work out the current key table. If the pane is in a mode, use
* the mode table instead of the default key table.
*/
if (server_client_is_default_key_table(c, c->keytable) &&
wp != NULL &&
(wme = TAILQ_FIRST(&wp->modes)) != NULL &&
wme->mode->key_table != NULL)
table = key_bindings_get_table(wme->mode->key_table(wme), 1);
else
table = c->keytable;
first = table;
table_changed:
/*
* The prefix always takes precedence and forces a switch to the prefix
* table, unless we are already there.
*/
key0 = (key & (KEYC_MASK_KEY|KEYC_MASK_MODIFIERS));
if ((key0 == (key_code)options_get_number(s->options, "prefix") ||
key0 == (key_code)options_get_number(s->options, "prefix2")) &&
strcmp(table->name, "prefix") != 0) {
server_client_set_key_table(c, "prefix");
server_status_client(c);
goto out;
}
flags = c->flags;
try_again:
/* Log key table. */
if (wp == NULL)
log_debug("key table %s (no pane)", table->name);
else
log_debug("key table %s (pane %%%u)", table->name, wp->id);
if (c->flags & CLIENT_REPEAT)
log_debug("currently repeating");
/* Try to see if there is a key binding in the current table. */
bd = key_bindings_get(table, key0);
if (bd != NULL) {
/*
* Key was matched in this table. If currently repeating but a
* non-repeating binding was found, stop repeating and try
* again in the root table.
*/
if ((c->flags & CLIENT_REPEAT) &&
(~bd->flags & KEY_BINDING_REPEAT)) {
log_debug("found in key table %s (not repeating)",
table->name);
server_client_set_key_table(c, NULL);
first = table = c->keytable;
c->flags &= ~CLIENT_REPEAT;
server_status_client(c);
goto table_changed;
}
log_debug("found in key table %s", table->name);
/*
* Take a reference to this table to make sure the key binding
* doesn't disappear.
*/
table->references++;
/*
* If this is a repeating key, start the timer. Otherwise reset
* the client back to the root table.
*/
xtimeout = options_get_number(s->options, "repeat-time");
if (xtimeout != 0 && (bd->flags & KEY_BINDING_REPEAT)) {
c->flags |= CLIENT_REPEAT;
tv.tv_sec = xtimeout / 1000;
tv.tv_usec = (xtimeout % 1000) * 1000L;
evtimer_del(&c->repeat_timer);
evtimer_add(&c->repeat_timer, &tv);
} else {
c->flags &= ~CLIENT_REPEAT;
server_client_set_key_table(c, NULL);
}
server_status_client(c);
/* Execute the key binding. */
key_bindings_dispatch(bd, item, c, event, &fs);
key_bindings_unref_table(table);
goto out;
}
/*
* No match, try the ANY key.
*/
if (key0 != KEYC_ANY) {
key0 = KEYC_ANY;
goto try_again;
}
/*
* No match in this table. If not in the root table or if repeating,
* switch the client back to the root table and try again.
*/
log_debug("not found in key table %s", table->name);
if (!server_client_is_default_key_table(c, table) ||
(c->flags & CLIENT_REPEAT)) {
log_debug("trying in root table");
server_client_set_key_table(c, NULL);
table = c->keytable;
if (c->flags & CLIENT_REPEAT)
first = table;
c->flags &= ~CLIENT_REPEAT;
server_status_client(c);
goto table_changed;
}
/*
* No match in the root table either. If this wasn't the first table
* tried, don't pass the key to the pane.
*/
if (first != table && (~flags & CLIENT_REPEAT)) {
server_client_set_key_table(c, NULL);
server_status_client(c);
goto out;
}
forward_key:
if (c->flags & CLIENT_READONLY)
goto out;
if (wp != NULL)
window_pane_key(wp, c, s, wl, key, m);
out:
if (s != NULL && key != KEYC_FOCUS_OUT)
server_client_update_latest(c);
free(event);
return (CMD_RETURN_NORMAL);
}
/* Handle a key event. */
int
server_client_handle_key(struct client *c, struct key_event *event)
{
struct session *s = c->session;
struct cmdq_item *item;
/* Check the client is good to accept input. */
if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
return (0);
/*
* Key presses in overlay mode and the command prompt are a special
* case. The queue might be blocked so they need to be processed
* immediately rather than queued.
*/
if (~c->flags & CLIENT_READONLY) {
if (c->message_string != NULL) {
if (c->message_ignore_keys)
return (0);
status_message_clear(c);
}
if (c->overlay_key != NULL) {
switch (c->overlay_key(c, c->overlay_data, event)) {
case 0:
return (0);
case 1:
server_client_clear_overlay(c);
return (0);
}
}
server_client_clear_overlay(c);
if (c->prompt_string != NULL) {
if (status_prompt_key(c, event->key) == 0)
return (0);
}
}
/*
* Add the key to the queue so it happens after any commands queued by
* previous keys.
*/
item = cmdq_get_callback(server_client_key_callback, event);
cmdq_append(c, item);
return (1);
}
/* Client functions that need to happen every loop. */
void
server_client_loop(void)
{
struct client *c;
struct window *w;
struct window_pane *wp;
/* Check for window resize. This is done before redrawing. */
RB_FOREACH(w, windows, &windows)
server_client_check_window_resize(w);
/* Check clients. */
TAILQ_FOREACH(c, &clients, entry) {
server_client_check_exit(c);
if (c->session != NULL) {
server_client_check_modes(c);
server_client_check_redraw(c);
server_client_reset_state(c);
}
}
/*
* Any windows will have been redrawn as part of clients, so clear
* their flags now.
*/
RB_FOREACH(w, windows, &windows) {
TAILQ_FOREACH(wp, &w->panes, entry) {
if (wp->fd != -1) {
server_client_check_pane_resize(wp);
server_client_check_pane_buffer(wp);
}
wp->flags &= ~PANE_REDRAW;
}
check_window_name(w);
}
}
/* Check if window needs to be resized. */
static void
server_client_check_window_resize(struct window *w)
{
struct winlink *wl;
if (~w->flags & WINDOW_RESIZE)
return;
TAILQ_FOREACH(wl, &w->winlinks, wentry) {
if (wl->session->attached != 0 && wl->session->curw == wl)
break;
}
if (wl == NULL)
return;
log_debug("%s: resizing window @%u", __func__, w->id);
resize_window(w, w->new_sx, w->new_sy, w->new_xpixel, w->new_ypixel);
}
/* Resize timer event. */
static void
server_client_resize_timer(__unused int fd, __unused short events, void *data)
{
struct window_pane *wp = data;
log_debug("%s: %%%u resize timer expired", __func__, wp->id);
evtimer_del(&wp->resize_timer);
}
/* Check if pane should be resized. */
static void
server_client_check_pane_resize(struct window_pane *wp)
{
struct window_pane_resize *r;
struct window_pane_resize *r1;
struct window_pane_resize *first;
struct window_pane_resize *last;
struct timeval tv = { .tv_usec = 250000 };
if (TAILQ_EMPTY(&wp->resize_queue))
return;
if (!event_initialized(&wp->resize_timer))
evtimer_set(&wp->resize_timer, server_client_resize_timer, wp);
if (evtimer_pending(&wp->resize_timer, NULL))
return;
log_debug("%s: %%%u needs to be resized", __func__, wp->id);
TAILQ_FOREACH(r, &wp->resize_queue, entry) {
log_debug("queued resize: %ux%u -> %ux%u", r->osx, r->osy,
r->sx, r->sy);
}
/*
* There are three cases that matter:
*
* - Only one resize. It can just be applied.
*
* - Multiple resizes and the ending size is different from the
* starting size. We can discard all resizes except the most recent.
*
* - Multiple resizes and the ending size is the same as the starting
* size. We must resize at least twice to force the application to
* redraw. So apply the first and leave the last on the queue for
* next time.
*/
first = TAILQ_FIRST(&wp->resize_queue);
last = TAILQ_LAST(&wp->resize_queue, window_pane_resizes);
if (first == last) {
/* Only one resize. */
window_pane_send_resize(wp, first->sx, first->sy);
TAILQ_REMOVE(&wp->resize_queue, first, entry);
free(first);
} else if (last->sx != first->osx || last->sy != first->osy) {
/* Multiple resizes ending up with a different size. */
window_pane_send_resize(wp, last->sx, last->sy);
TAILQ_FOREACH_SAFE(r, &wp->resize_queue, entry, r1) {
TAILQ_REMOVE(&wp->resize_queue, r, entry);
free(r);
}
} else {
/*
* Multiple resizes ending up with the same size. There will
* not be more than one to the same size in succession so we
* can just use the last-but-one on the list and leave the last
* for later. We reduce the time until the next check to avoid
* a long delay between the resizes.
*/
r = TAILQ_PREV(last, window_pane_resizes, entry);
window_pane_send_resize(wp, r->sx, r->sy);
TAILQ_FOREACH_SAFE(r, &wp->resize_queue, entry, r1) {
if (r == last)
break;
TAILQ_REMOVE(&wp->resize_queue, r, entry);
free(r);
}
tv.tv_usec = 10000;
}
evtimer_add(&wp->resize_timer, &tv);
}
/* Check pane buffer size. */
static void
server_client_check_pane_buffer(struct window_pane *wp)
{
struct evbuffer *evb = wp->event->input;
size_t minimum;
struct client *c;
struct window_pane_offset *wpo;
int off = 1, flag;
u_int attached_clients = 0;
size_t new_size;
/*
* Work out the minimum used size. This is the most that can be removed
* from the buffer.
*/
minimum = wp->offset.used;
if (wp->pipe_fd != -1 && wp->pipe_offset.used < minimum)
minimum = wp->pipe_offset.used;
TAILQ_FOREACH(c, &clients, entry) {
if (c->session == NULL)
continue;
attached_clients++;
if (~c->flags & CLIENT_CONTROL) {
off = 0;
continue;
}
wpo = control_pane_offset(c, wp, &flag);
if (wpo == NULL) {
off = 0;
continue;
}
if (!flag)
off = 0;
window_pane_get_new_data(wp, wpo, &new_size);
log_debug("%s: %s has %zu bytes used and %zu left for %%%u",
__func__, c->name, wpo->used - wp->base_offset, new_size,
wp->id);
if (wpo->used < minimum)
minimum = wpo->used;
}
if (attached_clients == 0)
off = 0;
minimum -= wp->base_offset;
if (minimum == 0)
goto out;
/* Drain the buffer. */
log_debug("%s: %%%u has %zu minimum (of %zu) bytes used", __func__,
wp->id, minimum, EVBUFFER_LENGTH(evb));
evbuffer_drain(evb, minimum);
/*
* Adjust the base offset. If it would roll over, all the offsets into
* the buffer need to be adjusted.
*/
if (wp->base_offset > SIZE_MAX - minimum) {
log_debug("%s: %%%u base offset has wrapped", __func__, wp->id);
wp->offset.used -= wp->base_offset;
if (wp->pipe_fd != -1)
wp->pipe_offset.used -= wp->base_offset;
TAILQ_FOREACH(c, &clients, entry) {
if (c->session == NULL || (~c->flags & CLIENT_CONTROL))
continue;
wpo = control_pane_offset(c, wp, &flag);
if (wpo != NULL && !flag)
wpo->used -= wp->base_offset;
}
wp->base_offset = minimum;
} else
wp->base_offset += minimum;
out:
/*
* If there is data remaining, and there are no clients able to consume
* it, do not read any more. This is true when there are attached
* clients, all of which are control clients which are not able to
* accept any more data.
*/
log_debug("%s: pane %%%u is %s", __func__, wp->id, off ? "off" : "on");
if (off)
bufferevent_disable(wp->event, EV_READ);
else
bufferevent_enable(wp->event, EV_READ);
}
/*
* Update cursor position and mode settings. The scroll region and attributes
* are cleared when idle (waiting for an event) as this is the most likely time
* a user may interrupt tmux, for example with ~^Z in ssh(1). This is a
* compromise between excessive resets and likelihood of an interrupt.
*
* tty_region/tty_reset/tty_update_mode already take care of not resetting
* things that are already in their default state.
*/
static void
server_client_reset_state(struct client *c)
{
struct tty *tty = &c->tty;
struct window *w = c->session->curw->window;
struct window_pane *wp = server_client_get_pane(c), *loop;
struct screen *s = NULL;
struct options *oo = c->session->options;
int mode = 0, cursor, flags, n;
u_int cx = 0, cy = 0, ox, oy, sx, sy;
if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
return;
/* Disable the block flag. */
flags = (tty->flags & TTY_BLOCK);
tty->flags &= ~TTY_BLOCK;
/* Get mode from overlay if any, else from screen. */
if (c->overlay_draw != NULL) {
if (c->overlay_mode != NULL)
s = c->overlay_mode(c, c->overlay_data, &cx, &cy);
} else
s = wp->screen;
if (s != NULL)
mode = s->mode;
if (log_get_level() != 0) {
log_debug("%s: client %s mode %s", __func__, c->name,
screen_mode_to_string(mode));
}
/* Reset region and margin. */
tty_region_off(tty);
tty_margin_off(tty);
/* Move cursor to pane cursor and offset. */
if (c->prompt_string != NULL) {
n = options_get_number(c->session->options, "status-position");
if (n == 0)
cy = 0;
else {
n = status_line_size(c);
if (n == 0)
cy = tty->sy - 1;
else
cy = tty->sy - n;
}
cx = c->prompt_cursor;
mode &= ~MODE_CURSOR;
} else if (c->overlay_draw == NULL) {
cursor = 0;
tty_window_offset(tty, &ox, &oy, &sx, &sy);
if (wp->xoff + s->cx >= ox && wp->xoff + s->cx <= ox + sx &&
wp->yoff + s->cy >= oy && wp->yoff + s->cy <= oy + sy) {
cursor = 1;
cx = wp->xoff + s->cx - ox;
cy = wp->yoff + s->cy - oy;
if (status_at_line(c) == 0)
cy += status_line_size(c);
}
if (!cursor)
mode &= ~MODE_CURSOR;
}
log_debug("%s: cursor to %u,%u", __func__, cx, cy);
tty_cursor(tty, cx, cy);
/*
* Set mouse mode if requested. To support dragging, always use button
* mode.
*/
if (options_get_number(oo, "mouse")) {
if (c->overlay_draw == NULL) {
mode &= ~ALL_MOUSE_MODES;
TAILQ_FOREACH(loop, &w->panes, entry) {
if (loop->screen->mode & MODE_MOUSE_ALL)
mode |= MODE_MOUSE_ALL;
}
}
if (~mode & MODE_MOUSE_ALL)
mode |= MODE_MOUSE_BUTTON;
}
/* Clear bracketed paste mode if at the prompt. */
if (c->overlay_draw == NULL && c->prompt_string != NULL)
mode &= ~MODE_BRACKETPASTE;
/* Set the terminal mode and reset attributes. */
tty_update_mode(tty, mode, s);
tty_reset(tty);
/* All writing must be done, send a sync end (if it was started). */
tty_sync_end(tty);
tty->flags |= flags;
}
/* Repeat time callback. */
static void
server_client_repeat_timer(__unused int fd, __unused short events, void *data)
{
struct client *c = data;
if (c->flags & CLIENT_REPEAT) {
server_client_set_key_table(c, NULL);
c->flags &= ~CLIENT_REPEAT;
server_status_client(c);
}
}
/* Double-click callback. */
static void
server_client_click_timer(__unused int fd, __unused short events, void *data)
{
struct client *c = data;
struct key_event *event;
log_debug("click timer expired");
if (c->flags & CLIENT_TRIPLECLICK) {
/*
* Waiting for a third click that hasn't happened, so this must
* have been a double click.
*/
event = xmalloc(sizeof *event);
event->key = KEYC_DOUBLECLICK;
memcpy(&event->m, &c->click_event, sizeof event->m);
if (!server_client_handle_key(c, event))
free(event);
}
c->flags &= ~(CLIENT_DOUBLECLICK|CLIENT_TRIPLECLICK);
}
/* Check if client should be exited. */
static void
server_client_check_exit(struct client *c)
{
struct client_file *cf;
const char *name = c->exit_session;
char *data;
size_t size, msize;
if (c->flags & (CLIENT_DEAD|CLIENT_EXITED))
return;
if (~c->flags & CLIENT_EXIT)
return;
if (c->flags & CLIENT_CONTROL) {
control_discard(c);
if (!control_all_done(c))
return;
}
RB_FOREACH(cf, client_files, &c->files) {
if (EVBUFFER_LENGTH(cf->buffer) != 0)
return;
}
c->flags |= CLIENT_EXITED;
switch (c->exit_type) {
case CLIENT_EXIT_RETURN:
if (c->exit_message != NULL)
msize = strlen(c->exit_message) + 1;
else
msize = 0;
size = (sizeof c->retval) + msize;
data = xmalloc(size);
memcpy(data, &c->retval, sizeof c->retval);
if (c->exit_message != NULL)
memcpy(data + sizeof c->retval, c->exit_message, msize);
proc_send(c->peer, MSG_EXIT, -1, data, size);
free(data);
break;
case CLIENT_EXIT_SHUTDOWN:
proc_send(c->peer, MSG_SHUTDOWN, -1, NULL, 0);
break;
case CLIENT_EXIT_DETACH:
proc_send(c->peer, c->exit_msgtype, -1, name, strlen(name) + 1);
break;
}
free(c->exit_session);
free(c->exit_message);
}
/* Redraw timer callback. */
static void
server_client_redraw_timer(__unused int fd, __unused short events,
__unused void *data)
{
log_debug("redraw timer fired");
}
/*
* Check if modes need to be updated. Only modes in the current window are
* updated and it is done when the status line is redrawn.
*/
static void
server_client_check_modes(struct client *c)
{
struct window *w = c->session->curw->window;
struct window_pane *wp;
struct window_mode_entry *wme;
if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
return;
if (~c->flags & CLIENT_REDRAWSTATUS)
return;
TAILQ_FOREACH(wp, &w->panes, entry) {
wme = TAILQ_FIRST(&wp->modes);
if (wme != NULL && wme->mode->update != NULL)
wme->mode->update(wme);
}
}
/* Check for client redraws. */
static void
server_client_check_redraw(struct client *c)
{
struct session *s = c->session;
struct tty *tty = &c->tty;
struct window *w = c->session->curw->window;
struct window_pane *wp;
int needed, flags, mode = tty->mode, new_flags = 0;
int redraw;
u_int bit = 0;
struct timeval tv = { .tv_usec = 1000 };
static struct event ev;
size_t left;
if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
return;
if (c->flags & CLIENT_ALLREDRAWFLAGS) {
log_debug("%s: redraw%s%s%s%s%s", c->name,
(c->flags & CLIENT_REDRAWWINDOW) ? " window" : "",
(c->flags & CLIENT_REDRAWSTATUS) ? " status" : "",
(c->flags & CLIENT_REDRAWBORDERS) ? " borders" : "",
(c->flags & CLIENT_REDRAWOVERLAY) ? " overlay" : "",
(c->flags & CLIENT_REDRAWPANES) ? " panes" : "");
}
/*
* If there is outstanding data, defer the redraw until it has been
* consumed. We can just add a timer to get out of the event loop and
* end up back here.
*/
needed = 0;
if (c->flags & CLIENT_ALLREDRAWFLAGS)
needed = 1;
else {
TAILQ_FOREACH(wp, &w->panes, entry) {
if (wp->flags & PANE_REDRAW) {
needed = 1;
break;
}
}
if (needed)
new_flags |= CLIENT_REDRAWPANES;
}
if (needed && (left = EVBUFFER_LENGTH(tty->out)) != 0) {
log_debug("%s: redraw deferred (%zu left)", c->name, left);
if (!evtimer_initialized(&ev))
evtimer_set(&ev, server_client_redraw_timer, NULL);
if (!evtimer_pending(&ev, NULL)) {
log_debug("redraw timer started");
evtimer_add(&ev, &tv);
}
if (~c->flags & CLIENT_REDRAWWINDOW) {
TAILQ_FOREACH(wp, &w->panes, entry) {
if (wp->flags & PANE_REDRAW) {
log_debug("%s: pane %%%u needs redraw",
c->name, wp->id);
c->redraw_panes |= (1 << bit);
}
if (++bit == 64) {
/*
* If more that 64 panes, give up and
* just redraw the window.
*/
new_flags &= CLIENT_REDRAWPANES;
new_flags |= CLIENT_REDRAWWINDOW;
break;
}
}
if (c->redraw_panes != 0)
c->flags |= CLIENT_REDRAWPANES;
}
c->flags |= new_flags;
return;
} else if (needed)
log_debug("%s: redraw needed", c->name);
flags = tty->flags & (TTY_BLOCK|TTY_FREEZE|TTY_NOCURSOR);
tty->flags = (tty->flags & ~(TTY_BLOCK|TTY_FREEZE))|TTY_NOCURSOR;
if (~c->flags & CLIENT_REDRAWWINDOW) {
/*
* If not redrawing the entire window, check whether each pane
* needs to be redrawn.
*/
TAILQ_FOREACH(wp, &w->panes, entry) {
redraw = 0;
if (wp->flags & PANE_REDRAW)
redraw = 1;
else if (c->flags & CLIENT_REDRAWPANES)
redraw = !!(c->redraw_panes & (1 << bit));
bit++;
if (!redraw)
continue;
log_debug("%s: redrawing pane %%%u", __func__, wp->id);
screen_redraw_pane(c, wp);
}
c->redraw_panes = 0;
c->flags &= ~CLIENT_REDRAWPANES;
}
if (c->flags & CLIENT_ALLREDRAWFLAGS) {
if (options_get_number(s->options, "set-titles"))
server_client_set_title(c);
screen_redraw_screen(c);
}
tty->flags = (tty->flags & ~TTY_NOCURSOR)|(flags & TTY_NOCURSOR);
tty_update_mode(tty, mode, NULL);
tty->flags = (tty->flags & ~(TTY_BLOCK|TTY_FREEZE|TTY_NOCURSOR))|flags;
c->flags &= ~(CLIENT_ALLREDRAWFLAGS|CLIENT_STATUSFORCE);
if (needed) {
/*
* We would have deferred the redraw unless the output buffer
* was empty, so we can record how many bytes the redraw
* generated.
*/
c->redraw = EVBUFFER_LENGTH(tty->out);
log_debug("%s: redraw added %zu bytes", c->name, c->redraw);
}
}
/* Set client title. */
static void
server_client_set_title(struct client *c)
{
struct session *s = c->session;
const char *template;
char *title;
struct format_tree *ft;
template = options_get_string(s->options, "set-titles-string");
ft = format_create(c, NULL, FORMAT_NONE, 0);
format_defaults(ft, c, NULL, NULL, NULL);
title = format_expand_time(ft, template);
if (c->title == NULL || strcmp(title, c->title) != 0) {
free(c->title);
c->title = xstrdup(title);
tty_set_title(&c->tty, c->title);
}
free(title);
format_free(ft);
}
/* Dispatch message from client. */
static void
server_client_dispatch(struct imsg *imsg, void *arg)
{
struct client *c = arg;
ssize_t datalen;
struct session *s;
if (c->flags & CLIENT_DEAD)
return;
if (imsg == NULL) {
server_client_lost(c);
return;
}
datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
switch (imsg->hdr.type) {
case MSG_IDENTIFY_CLIENTPID:
case MSG_IDENTIFY_CWD:
case MSG_IDENTIFY_ENVIRON:
case MSG_IDENTIFY_FEATURES:
case MSG_IDENTIFY_FLAGS:
case MSG_IDENTIFY_LONGFLAGS:
case MSG_IDENTIFY_STDIN:
case MSG_IDENTIFY_STDOUT:
case MSG_IDENTIFY_TERM:
case MSG_IDENTIFY_TERMINFO:
case MSG_IDENTIFY_TTYNAME:
case MSG_IDENTIFY_DONE:
server_client_dispatch_identify(c, imsg);
break;
case MSG_COMMAND:
server_client_dispatch_command(c, imsg);
break;
case MSG_RESIZE:
if (datalen != 0)
fatalx("bad MSG_RESIZE size");
if (c->flags & CLIENT_CONTROL)
break;
server_client_update_latest(c);
tty_resize(&c->tty);
recalculate_sizes();
if (c->overlay_resize == NULL)
server_client_clear_overlay(c);
else
c->overlay_resize(c, c->overlay_data);
server_redraw_client(c);
if (c->session != NULL)
notify_client("client-resized", c);
break;
case MSG_EXITING:
if (datalen != 0)
fatalx("bad MSG_EXITING size");
server_client_set_session(c, NULL);
recalculate_sizes();
tty_close(&c->tty);
proc_send(c->peer, MSG_EXITED, -1, NULL, 0);
break;
case MSG_WAKEUP:
case MSG_UNLOCK:
if (datalen != 0)
fatalx("bad MSG_WAKEUP size");
if (!(c->flags & CLIENT_SUSPENDED))
break;
c->flags &= ~CLIENT_SUSPENDED;
if (c->fd == -1 || c->session == NULL) /* exited already */
break;
s = c->session;
if (gettimeofday(&c->activity_time, NULL) != 0)
fatal("gettimeofday failed");
tty_start_tty(&c->tty);
server_redraw_client(c);
recalculate_sizes();
if (s != NULL)
session_update_activity(s, &c->activity_time);
break;
case MSG_SHELL:
if (datalen != 0)
fatalx("bad MSG_SHELL size");
server_client_dispatch_shell(c);
break;
case MSG_WRITE_READY:
file_write_ready(&c->files, imsg);
break;
case MSG_READ:
file_read_data(&c->files, imsg);
break;
case MSG_READ_DONE:
file_read_done(&c->files, imsg);
break;
}
}
/* Callback when command is done. */
static enum cmd_retval
server_client_command_done(struct cmdq_item *item, __unused void *data)
{
struct client *c = cmdq_get_client(item);
if (~c->flags & CLIENT_ATTACHED)
c->flags |= CLIENT_EXIT;
else if (~c->flags & CLIENT_EXIT)
tty_send_requests(&c->tty);
return (CMD_RETURN_NORMAL);
}
/* Handle command message. */
static void
server_client_dispatch_command(struct client *c, struct imsg *imsg)
{
struct msg_command data;
char *buf;
size_t len;
int argc;
char **argv, *cause;
struct cmd_parse_result *pr;
struct args_value *values;
if (c->flags & CLIENT_EXIT)
return;
if (imsg->hdr.len - IMSG_HEADER_SIZE < sizeof data)
fatalx("bad MSG_COMMAND size");
memcpy(&data, imsg->data, sizeof data);
buf = (char *)imsg->data + sizeof data;
len = imsg->hdr.len - IMSG_HEADER_SIZE - sizeof data;
if (len > 0 && buf[len - 1] != '\0')
fatalx("bad MSG_COMMAND string");
argc = data.argc;
if (cmd_unpack_argv(buf, len, argc, &argv) != 0) {
cause = xstrdup("command too long");
goto error;
}
if (argc == 0) {
argc = 1;
argv = xcalloc(1, sizeof *argv);
*argv = xstrdup("new-session");
}
values = args_from_vector(argc, argv);
pr = cmd_parse_from_arguments(values, argc, NULL);
switch (pr->status) {
case CMD_PARSE_ERROR:
cause = pr->error;
goto error;
case CMD_PARSE_SUCCESS:
break;
}
args_free_values(values, argc);
free(values);
cmd_free_argv(argc, argv);
cmdq_append(c, cmdq_get_command(pr->cmdlist, NULL));
cmdq_append(c, cmdq_get_callback(server_client_command_done, NULL));
cmd_list_free(pr->cmdlist);
return;
error:
cmd_free_argv(argc, argv);
cmdq_append(c, cmdq_get_error(cause));
free(cause);
c->flags |= CLIENT_EXIT;
}
/* Handle identify message. */
static void
server_client_dispatch_identify(struct client *c, struct imsg *imsg)
{
const char *data, *home;
size_t datalen;
int flags, feat;
uint64_t longflags;
char *name;
if (c->flags & CLIENT_IDENTIFIED)
fatalx("out-of-order identify message");
data = imsg->data;
datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
switch (imsg->hdr.type) {
case MSG_IDENTIFY_FEATURES:
if (datalen != sizeof feat)
fatalx("bad MSG_IDENTIFY_FEATURES size");
memcpy(&feat, data, sizeof feat);
c->term_features |= feat;
log_debug("client %p IDENTIFY_FEATURES %s", c,
tty_get_features(feat));
break;
case MSG_IDENTIFY_FLAGS:
if (datalen != sizeof flags)
fatalx("bad MSG_IDENTIFY_FLAGS size");
memcpy(&flags, data, sizeof flags);
c->flags |= flags;
log_debug("client %p IDENTIFY_FLAGS %#x", c, flags);
break;
case MSG_IDENTIFY_LONGFLAGS:
if (datalen != sizeof longflags)
fatalx("bad MSG_IDENTIFY_LONGFLAGS size");
memcpy(&longflags, data, sizeof longflags);
c->flags |= longflags;
log_debug("client %p IDENTIFY_LONGFLAGS %#llx", c,
(unsigned long long)longflags);
break;
case MSG_IDENTIFY_TERM:
if (datalen == 0 || data[datalen - 1] != '\0')
fatalx("bad MSG_IDENTIFY_TERM string");
if (*data == '\0')
c->term_name = xstrdup("unknown");
else
c->term_name = xstrdup(data);
log_debug("client %p IDENTIFY_TERM %s", c, data);
break;
case MSG_IDENTIFY_TERMINFO:
if (datalen == 0 || data[datalen - 1] != '\0')
fatalx("bad MSG_IDENTIFY_TERMINFO string");
c->term_caps = xreallocarray(c->term_caps, c->term_ncaps + 1,
sizeof *c->term_caps);
c->term_caps[c->term_ncaps++] = xstrdup(data);
log_debug("client %p IDENTIFY_TERMINFO %s", c, data);
break;
case MSG_IDENTIFY_TTYNAME:
if (datalen == 0 || data[datalen - 1] != '\0')
fatalx("bad MSG_IDENTIFY_TTYNAME string");
c->ttyname = xstrdup(data);
log_debug("client %p IDENTIFY_TTYNAME %s", c, data);
break;
case MSG_IDENTIFY_CWD:
if (datalen == 0 || data[datalen - 1] != '\0')
fatalx("bad MSG_IDENTIFY_CWD string");
if (access(data, X_OK) == 0)
c->cwd = xstrdup(data);
else if ((home = find_home()) != NULL)
c->cwd = xstrdup(home);
else
c->cwd = xstrdup("/");
log_debug("client %p IDENTIFY_CWD %s", c, data);
break;
case MSG_IDENTIFY_STDIN:
if (datalen != 0)
fatalx("bad MSG_IDENTIFY_STDIN size");
c->fd = imsg->fd;
log_debug("client %p IDENTIFY_STDIN %d", c, imsg->fd);
break;
case MSG_IDENTIFY_STDOUT:
if (datalen != 0)
fatalx("bad MSG_IDENTIFY_STDOUT size");
c->out_fd = imsg->fd;
log_debug("client %p IDENTIFY_STDOUT %d", c, imsg->fd);
break;
case MSG_IDENTIFY_ENVIRON:
if (datalen == 0 || data[datalen - 1] != '\0')
fatalx("bad MSG_IDENTIFY_ENVIRON string");
if (strchr(data, '=') != NULL)
environ_put(c->environ, data, 0);
log_debug("client %p IDENTIFY_ENVIRON %s", c, data);
break;
case MSG_IDENTIFY_CLIENTPID:
if (datalen != sizeof c->pid)
fatalx("bad MSG_IDENTIFY_CLIENTPID size");
memcpy(&c->pid, data, sizeof c->pid);
log_debug("client %p IDENTIFY_CLIENTPID %ld", c, (long)c->pid);
break;
default:
break;
}
if (imsg->hdr.type != MSG_IDENTIFY_DONE)
return;
c->flags |= CLIENT_IDENTIFIED;
if (*c->ttyname != '\0')
name = xstrdup(c->ttyname);
else
xasprintf(&name, "client-%ld", (long)c->pid);
c->name = name;
log_debug("client %p name is %s", c, c->name);
if (c->flags & CLIENT_CONTROL)
control_start(c);
else if (c->fd != -1) {
if (tty_init(&c->tty, c) != 0) {
close(c->fd);
c->fd = -1;
} else {
tty_resize(&c->tty);
c->flags |= CLIENT_TERMINAL;
}
close(c->out_fd);
c->out_fd = -1;
}
/*
* If this is the first client, load configuration files. Any later
* clients are allowed to continue with their command even if the
* config has not been loaded - they might have been run from inside it
*/
if ((~c->flags & CLIENT_EXIT) &&
!cfg_finished &&
c == TAILQ_FIRST(&clients))
start_cfg();
}
/* Handle shell message. */
static void
server_client_dispatch_shell(struct client *c)
{
const char *shell;
shell = options_get_string(global_s_options, "default-shell");
if (!checkshell(shell))
shell = _PATH_BSHELL;
proc_send(c->peer, MSG_SHELL, -1, shell, strlen(shell) + 1);
proc_kill_peer(c->peer);
}
/* Get client working directory. */
const char *
server_client_get_cwd(struct client *c, struct session *s)
{
const char *home;
if (!cfg_finished && cfg_client != NULL)
return (cfg_client->cwd);
if (c != NULL && c->session == NULL && c->cwd != NULL)
return (c->cwd);
if (s != NULL && s->cwd != NULL)
return (s->cwd);
if (c != NULL && (s = c->session) != NULL && s->cwd != NULL)
return (s->cwd);
if ((home = find_home()) != NULL)
return (home);
return ("/");
}
/* Get control client flags. */
static uint64_t
server_client_control_flags(struct client *c, const char *next)
{
if (strcmp(next, "pause-after") == 0) {
c->pause_age = 0;
return (CLIENT_CONTROL_PAUSEAFTER);
}
if (sscanf(next, "pause-after=%u", &c->pause_age) == 1) {
c->pause_age *= 1000;
return (CLIENT_CONTROL_PAUSEAFTER);
}
if (strcmp(next, "no-output") == 0)
return (CLIENT_CONTROL_NOOUTPUT);
if (strcmp(next, "wait-exit") == 0)
return (CLIENT_CONTROL_WAITEXIT);
return (0);
}
/* Set client flags. */
void
server_client_set_flags(struct client *c, const char *flags)
{
char *s, *copy, *next;
uint64_t flag;
int not;
s = copy = xstrdup(flags);
while ((next = strsep(&s, ",")) != NULL) {
not = (*next == '!');
if (not)
next++;
if (c->flags & CLIENT_CONTROL)
flag = server_client_control_flags(c, next);
else
flag = 0;
if (strcmp(next, "read-only") == 0)
flag = CLIENT_READONLY;
else if (strcmp(next, "ignore-size") == 0)
flag = CLIENT_IGNORESIZE;
else if (strcmp(next, "active-pane") == 0)
flag = CLIENT_ACTIVEPANE;
if (flag == 0)
continue;
log_debug("client %s set flag %s", c->name, next);
if (not)
c->flags &= ~flag;
else
c->flags |= flag;
if (flag == CLIENT_CONTROL_NOOUTPUT)
control_reset_offsets(c);
}
free(copy);
proc_send(c->peer, MSG_FLAGS, -1, &c->flags, sizeof c->flags);
}
/* Get client flags. This is only flags useful to show to users. */
const char *
server_client_get_flags(struct client *c)
{
static char s[256];
char tmp[32];
*s = '\0';
if (c->flags & CLIENT_ATTACHED)
strlcat(s, "attached,", sizeof s);
if (c->flags & CLIENT_FOCUSED)
strlcat(s, "focused,", sizeof s);
if (c->flags & CLIENT_CONTROL)
strlcat(s, "control-mode,", sizeof s);
if (c->flags & CLIENT_IGNORESIZE)
strlcat(s, "ignore-size,", sizeof s);
if (c->flags & CLIENT_CONTROL_NOOUTPUT)
strlcat(s, "no-output,", sizeof s);
if (c->flags & CLIENT_CONTROL_WAITEXIT)
strlcat(s, "wait-exit,", sizeof s);
if (c->flags & CLIENT_CONTROL_PAUSEAFTER) {
xsnprintf(tmp, sizeof tmp, "pause-after=%u,",
c->pause_age / 1000);
strlcat(s, tmp, sizeof s);
}
if (c->flags & CLIENT_READONLY)
strlcat(s, "read-only,", sizeof s);
if (c->flags & CLIENT_ACTIVEPANE)
strlcat(s, "active-pane,", sizeof s);
if (c->flags & CLIENT_SUSPENDED)
strlcat(s, "suspended,", sizeof s);
if (c->flags & CLIENT_UTF8)
strlcat(s, "UTF-8,", sizeof s);
if (*s != '\0')
s[strlen(s) - 1] = '\0';
return (s);
}
/* Get client window. */
struct client_window *
server_client_get_client_window(struct client *c, u_int id)
{
struct client_window cw = { .window = id };
return (RB_FIND(client_windows, &c->windows, &cw));
}
/* Add client window. */
struct client_window *
server_client_add_client_window(struct client *c, u_int id)
{
struct client_window *cw;
cw = server_client_get_client_window(c, id);
if (cw == NULL) {
cw = xcalloc(1, sizeof *cw);
cw->window = id;
RB_INSERT(client_windows, &c->windows, cw);
}
return cw;
}
/* Get client active pane. */
struct window_pane *
server_client_get_pane(struct client *c)
{
struct session *s = c->session;
struct client_window *cw;
if (s == NULL)
return (NULL);
if (~c->flags & CLIENT_ACTIVEPANE)
return (s->curw->window->active);
cw = server_client_get_client_window(c, s->curw->window->id);
if (cw == NULL)
return (s->curw->window->active);
return (cw->pane);
}
/* Set client active pane. */
void
server_client_set_pane(struct client *c, struct window_pane *wp)
{
struct session *s = c->session;
struct client_window *cw;
if (s == NULL)
return;
cw = server_client_add_client_window(c, s->curw->window->id);
cw->pane = wp;
log_debug("%s pane now %%%u", c->name, wp->id);
}
/* Remove pane from client lists. */
void
server_client_remove_pane(struct window_pane *wp)
{
struct client *c;
struct window *w = wp->window;
struct client_window *cw;
TAILQ_FOREACH(c, &clients, entry) {
cw = server_client_get_client_window(c, w->id);
if (cw != NULL && cw->pane == wp) {
RB_REMOVE(client_windows, &c->windows, cw);
free(cw);
}
}
}
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