mirror of
https://github.com/tmux/tmux.git
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445 lines
9.3 KiB
C
445 lines
9.3 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <sys/uio.h>
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#include <imsg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include "tmux.h"
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static struct session *server_next_session(struct session *);
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static void server_destroy_session_group(struct session *);
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void
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server_redraw_client(struct client *c)
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{
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c->flags |= CLIENT_REDRAW;
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}
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void
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server_status_client(struct client *c)
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{
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c->flags |= CLIENT_STATUS;
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}
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void
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server_redraw_session(struct session *s)
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{
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struct client *c;
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TAILQ_FOREACH(c, &clients, entry) {
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if (c->session == s)
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server_redraw_client(c);
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}
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}
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void
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server_redraw_session_group(struct session *s)
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{
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struct session_group *sg;
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if ((sg = session_group_contains(s)) == NULL)
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server_redraw_session(s);
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else {
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TAILQ_FOREACH(s, &sg->sessions, gentry)
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server_redraw_session(s);
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}
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}
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void
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server_status_session(struct session *s)
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{
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struct client *c;
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TAILQ_FOREACH(c, &clients, entry) {
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if (c->session == s)
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server_status_client(c);
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}
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}
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void
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server_status_session_group(struct session *s)
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{
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struct session_group *sg;
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if ((sg = session_group_contains(s)) == NULL)
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server_status_session(s);
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else {
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TAILQ_FOREACH(s, &sg->sessions, gentry)
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server_status_session(s);
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}
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}
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void
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server_redraw_window(struct window *w)
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{
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struct client *c;
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TAILQ_FOREACH(c, &clients, entry) {
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if (c->session != NULL && c->session->curw->window == w)
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server_redraw_client(c);
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}
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}
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void
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server_redraw_window_borders(struct window *w)
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{
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struct client *c;
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TAILQ_FOREACH(c, &clients, entry) {
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if (c->session != NULL && c->session->curw->window == w)
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c->flags |= CLIENT_BORDERS;
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}
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}
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void
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server_status_window(struct window *w)
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{
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struct session *s;
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/*
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* This is slightly different. We want to redraw the status line of any
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* clients containing this window rather than anywhere it is the
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* current window.
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*/
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RB_FOREACH(s, sessions, &sessions) {
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if (session_has(s, w))
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server_status_session(s);
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}
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}
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void
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server_lock(void)
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{
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struct client *c;
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TAILQ_FOREACH(c, &clients, entry) {
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if (c->session != NULL)
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server_lock_client(c);
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}
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}
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void
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server_lock_session(struct session *s)
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{
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struct client *c;
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TAILQ_FOREACH(c, &clients, entry) {
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if (c->session == s)
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server_lock_client(c);
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}
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}
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void
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server_lock_client(struct client *c)
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{
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const char *cmd;
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if (c->flags & CLIENT_CONTROL)
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return;
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if (c->flags & CLIENT_SUSPENDED)
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return;
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cmd = options_get_string(c->session->options, "lock-command");
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if (strlen(cmd) + 1 > MAX_IMSGSIZE - IMSG_HEADER_SIZE)
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return;
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tty_stop_tty(&c->tty);
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tty_raw(&c->tty, tty_term_string(c->tty.term, TTYC_SMCUP));
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tty_raw(&c->tty, tty_term_string(c->tty.term, TTYC_CLEAR));
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tty_raw(&c->tty, tty_term_string(c->tty.term, TTYC_E3));
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c->flags |= CLIENT_SUSPENDED;
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proc_send_s(c->peer, MSG_LOCK, cmd);
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}
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void
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server_kill_window(struct window *w)
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{
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struct session *s, *next_s, *target_s;
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struct session_group *sg;
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struct winlink *wl;
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next_s = RB_MIN(sessions, &sessions);
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while (next_s != NULL) {
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s = next_s;
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next_s = RB_NEXT(sessions, &sessions, s);
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if (!session_has(s, w))
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continue;
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server_unzoom_window(w);
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while ((wl = winlink_find_by_window(&s->windows, w)) != NULL) {
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if (session_detach(s, wl)) {
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server_destroy_session_group(s);
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break;
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} else
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server_redraw_session_group(s);
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}
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if (options_get_number(s->options, "renumber-windows")) {
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if ((sg = session_group_contains(s)) != NULL) {
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TAILQ_FOREACH(target_s, &sg->sessions, gentry)
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session_renumber_windows(target_s);
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} else
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session_renumber_windows(s);
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}
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}
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recalculate_sizes();
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}
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int
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server_link_window(struct session *src, struct winlink *srcwl,
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struct session *dst, int dstidx, int killflag, int selectflag,
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char **cause)
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{
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struct winlink *dstwl;
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struct session_group *srcsg, *dstsg;
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srcsg = session_group_contains(src);
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dstsg = session_group_contains(dst);
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if (src != dst && srcsg != NULL && dstsg != NULL && srcsg == dstsg) {
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xasprintf(cause, "sessions are grouped");
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return (-1);
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}
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dstwl = NULL;
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if (dstidx != -1)
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dstwl = winlink_find_by_index(&dst->windows, dstidx);
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if (dstwl != NULL) {
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if (dstwl->window == srcwl->window) {
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xasprintf(cause, "same index: %d", dstidx);
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return (-1);
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}
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if (killflag) {
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/*
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* Can't use session_detach as it will destroy session
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* if this makes it empty.
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*/
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notify_session_window("window-unlinked", dst,
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dstwl->window);
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dstwl->flags &= ~WINLINK_ALERTFLAGS;
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winlink_stack_remove(&dst->lastw, dstwl);
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winlink_remove(&dst->windows, dstwl);
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/* Force select/redraw if current. */
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if (dstwl == dst->curw) {
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selectflag = 1;
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dst->curw = NULL;
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}
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}
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}
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if (dstidx == -1)
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dstidx = -1 - options_get_number(dst->options, "base-index");
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dstwl = session_attach(dst, srcwl->window, dstidx, cause);
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if (dstwl == NULL)
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return (-1);
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if (selectflag)
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session_select(dst, dstwl->idx);
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server_redraw_session_group(dst);
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return (0);
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}
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void
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server_unlink_window(struct session *s, struct winlink *wl)
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{
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if (session_detach(s, wl))
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server_destroy_session_group(s);
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else
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server_redraw_session_group(s);
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}
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void
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server_destroy_pane(struct window_pane *wp, int notify)
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{
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struct window *w = wp->window;
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int old_fd;
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struct screen_write_ctx ctx;
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struct grid_cell gc;
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old_fd = wp->fd;
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if (wp->fd != -1) {
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bufferevent_free(wp->event);
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close(wp->fd);
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wp->fd = -1;
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}
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if (options_get_number(w->options, "remain-on-exit")) {
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if (old_fd == -1)
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return;
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if (notify)
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notify_pane("pane-died", wp);
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screen_write_start(&ctx, wp, &wp->base);
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screen_write_scrollregion(&ctx, 0, screen_size_y(ctx.s) - 1);
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screen_write_cursormove(&ctx, 0, screen_size_y(ctx.s) - 1);
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screen_write_linefeed(&ctx, 1, 8);
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memcpy(&gc, &grid_default_cell, sizeof gc);
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gc.attr |= GRID_ATTR_BRIGHT;
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screen_write_puts(&ctx, &gc, "Pane is dead");
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screen_write_stop(&ctx);
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wp->flags |= PANE_REDRAW;
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return;
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}
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if (notify)
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notify_pane("pane-exited", wp);
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server_unzoom_window(w);
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layout_close_pane(wp);
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window_remove_pane(w, wp);
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if (TAILQ_EMPTY(&w->panes))
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server_kill_window(w);
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else
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server_redraw_window(w);
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}
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static void
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server_destroy_session_group(struct session *s)
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{
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struct session_group *sg;
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struct session *s1;
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if ((sg = session_group_contains(s)) == NULL)
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server_destroy_session(s);
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else {
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TAILQ_FOREACH_SAFE(s, &sg->sessions, gentry, s1) {
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server_destroy_session(s);
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session_destroy(s);
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}
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}
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}
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static struct session *
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server_next_session(struct session *s)
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{
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struct session *s_loop, *s_out;
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s_out = NULL;
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RB_FOREACH(s_loop, sessions, &sessions) {
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if (s_loop == s)
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continue;
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if (s_out == NULL ||
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timercmp(&s_loop->activity_time, &s_out->activity_time, <))
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s_out = s_loop;
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}
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return (s_out);
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}
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void
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server_destroy_session(struct session *s)
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{
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struct client *c;
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struct session *s_new;
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if (!options_get_number(s->options, "detach-on-destroy"))
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s_new = server_next_session(s);
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else
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s_new = NULL;
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TAILQ_FOREACH(c, &clients, entry) {
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if (c->session != s)
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continue;
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if (s_new == NULL) {
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c->session = NULL;
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c->flags |= CLIENT_EXIT;
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} else {
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c->last_session = NULL;
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c->session = s_new;
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server_client_set_key_table(c, NULL);
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status_timer_start(c);
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notify_client("client-session-changed", c);
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session_update_activity(s_new, NULL);
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gettimeofday(&s_new->last_attached_time, NULL);
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server_redraw_client(c);
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alerts_check_session(s_new);
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}
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}
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recalculate_sizes();
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}
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void
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server_check_unattached(void)
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{
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struct session *s;
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/*
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* If any sessions are no longer attached and have destroy-unattached
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* set, collect them.
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*/
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RB_FOREACH(s, sessions, &sessions) {
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if (!(s->flags & SESSION_UNATTACHED))
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continue;
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if (options_get_number (s->options, "destroy-unattached"))
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session_destroy(s);
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}
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}
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/* Set stdin callback. */
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int
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server_set_stdin_callback(struct client *c, void (*cb)(struct client *, int,
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void *), void *cb_data, char **cause)
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{
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if (c == NULL || c->session != NULL) {
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*cause = xstrdup("no client with stdin");
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return (-1);
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}
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if (c->flags & CLIENT_TERMINAL) {
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*cause = xstrdup("stdin is a tty");
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return (-1);
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}
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if (c->stdin_callback != NULL) {
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*cause = xstrdup("stdin in use");
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return (-1);
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}
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c->stdin_callback_data = cb_data;
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c->stdin_callback = cb;
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c->references++;
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if (c->stdin_closed)
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c->stdin_callback(c, 1, c->stdin_callback_data);
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proc_send(c->peer, MSG_STDIN, -1, NULL, 0);
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return (0);
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}
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void
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server_unzoom_window(struct window *w)
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{
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if (window_unzoom(w) == 0) {
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server_redraw_window(w);
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server_status_window(w);
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}
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}
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