server-fn.c - tmux - Rivoreo Source Code Repositories

 /* $Id: server-fn.c,v 1.101 2010-01-05 23:52:37 tcunha Exp $ */

 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
  *
  * 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 <string.h>
 #include <time.h>
 #include <unistd.h>

 #include "tmux.h"

 void	server_callback_identify(int, short, void *);

 void
 server_fill_environ(struct session *s, struct environ *env)
 {
 	char		 tmuxvar[MAXPATHLEN], *term;
 	u_int		 idx;

 	if (session_index(s, &idx) != 0)
 		fatalx("session not found");
 	xsnprintf(tmuxvar, sizeof tmuxvar,
 	    "%s,%ld,%u", socket_path, (long) getpid(), idx);
 	environ_set(env, "TMUX", tmuxvar);

 	term = options_get_string(&s->options, "default-terminal");
 	environ_set(env, "TERM", term);
 }

 void
 server_write_error(struct client *c, const char *msg)
 {
 	struct msg_print_data	printdata;

 	strlcpy(printdata.msg, msg, sizeof printdata.msg);
 	server_write_client(c, MSG_ERROR, &printdata, sizeof printdata);
 }

 void
 server_write_client(
     struct client *c, enum msgtype type, const void *buf, size_t len)
 {
 	struct imsgbuf	*ibuf = &c->ibuf;

 	if (c->flags & CLIENT_BAD)
 		return;
 	log_debug("writing %d to client %d", type, c->ibuf.fd);
 	imsg_compose(ibuf, type, PROTOCOL_VERSION, -1, -1, (void *) buf, len);
 	server_update_event(c);
 }

 void
 server_write_session(
     struct session *s, enum msgtype type, const void *buf, size_t len)
 {
 	struct client	*c;
 	u_int		 i;

 	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 		c = ARRAY_ITEM(&clients, i);
 		if (c == NULL || c->session == NULL)
 			continue;
 		if (c->session == s)
 			server_write_client(c, type, buf, len);
 	}
 }

 void
 server_redraw_client(struct client *c)
 {
 	c->flags |= CLIENT_REDRAW;
 }

 void
 server_status_client(struct client *c)
 {
 	c->flags |= CLIENT_STATUS;
 }

 void
 server_redraw_session(struct session *s)
 {
 	struct client	*c;
 	u_int		 i;

 	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 		c = ARRAY_ITEM(&clients, i);
 		if (c == NULL || c->session == NULL)
 			continue;
 		if (c->session == s)
 			server_redraw_client(c);
 	}
 }

 void
 server_redraw_session_group(struct session *s)
 {
 	struct session_group	*sg;

 	if ((sg = session_group_find(s)) == NULL)
 		server_redraw_session(s);
 	else {
 		TAILQ_FOREACH(s, &sg->sessions, gentry)
 			server_redraw_session(s);
 	}
 }

 void
 server_status_session(struct session *s)
 {
 	struct client	*c;
 	u_int		 i;

 	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 		c = ARRAY_ITEM(&clients, i);
 		if (c == NULL || c->session == NULL)
 			continue;
 		if (c->session == s)
 			server_status_client(c);
 	}
 }

 void
 server_status_session_group(struct session *s)
 {
 	struct session_group	*sg;

 	if ((sg = session_group_find(s)) == NULL)
 		server_status_session(s);
 	else {
 		TAILQ_FOREACH(s, &sg->sessions, gentry)
 			server_status_session(s);
 	}
 }

 void
 server_redraw_window(struct window *w)
 {
 	struct client	*c;
 	u_int		 i;

 	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 		c = ARRAY_ITEM(&clients, i);
 		if (c == NULL || c->session == NULL)
 			continue;
 		if (c->session->curw->window == w)
 			server_redraw_client(c);
 	}
 	w->flags |= WINDOW_REDRAW;
 }

 void
 server_redraw_window_borders(struct window *w)
 {
 	struct client	*c;
 	u_int		 i;

 	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 		c = ARRAY_ITEM(&clients, i);
 		if (c == NULL || c->session == NULL)
 			continue;
 		if (c->session->curw->window == w)
 			c->flags |= CLIENT_BORDERS;
 	}
 }

 void
 server_status_window(struct window *w)
 {
 	struct session	*s;
 	u_int		 i;

 	/*
 	 * This is slightly different. We want to redraw the status line of any
 	 * clients containing this window rather than any where it is the
 	 * current window.
 	 */

 	for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
 		s = ARRAY_ITEM(&sessions, i);
 		if (s != NULL && session_has(s, w))
 			server_status_session(s);
 	}
 }

 void
 server_lock(void)
 {
 	struct client	*c;
 	u_int		 i;

 	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 		c = ARRAY_ITEM(&clients, i);
 		if (c == NULL || c->session == NULL)
 			continue;
 		server_lock_client(c);
 	}
 }

 void
 server_lock_session(struct session *s)
 {
 	struct client	*c;
 	u_int		 i;

 	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 		c = ARRAY_ITEM(&clients, i);
 		if (c == NULL || c->session == NULL || c->session != s)
 			continue;
 		server_lock_client(c);
 	}
 }

 void
 server_lock_client(struct client *c)
 {
 	const char		*cmd;
 	size_t			 cmdlen;
 	struct msg_lock_data	 lockdata;

 	if (c->flags & CLIENT_SUSPENDED)
 		return;

 	cmd = options_get_string(&c->session->options, "lock-command");
 	cmdlen = strlcpy(lockdata.cmd, cmd, sizeof lockdata.cmd);
 	if (cmdlen >= sizeof lockdata.cmd)
 		return;

 	tty_stop_tty(&c->tty);
 	tty_raw(&c->tty, tty_term_string(c->tty.term, TTYC_SMCUP));
 	tty_raw(&c->tty, tty_term_string(c->tty.term, TTYC_CLEAR));

 	c->flags |= CLIENT_SUSPENDED;
 	server_write_client(c, MSG_LOCK, &lockdata, sizeof lockdata);
 }

 void
 server_kill_window(struct window *w)
 {
 	struct session	*s;
 	struct winlink	*wl;
 	u_int		 i;

 	for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
 		s = ARRAY_ITEM(&sessions, i);
 		if (s == NULL || !session_has(s, w))
 			continue;
 		if ((wl = winlink_find_by_window(&s->windows, w)) == NULL)
 			continue;

 		if (session_detach(s, wl))
 			server_destroy_session_group(s);
 		else
 			server_redraw_session_group(s);
 	}
 }

 int
 server_link_window(struct session *src, struct winlink *srcwl,
     struct session *dst, int dstidx, int killflag, int selectflag, char **cause)
 {
 	struct winlink		*dstwl;
 	struct session_group	*srcsg, *dstsg;

 	srcsg = session_group_find(src);
 	dstsg = session_group_find(dst);
 	if (src != dst && srcsg != NULL && dstsg != NULL && srcsg == dstsg) {
 		xasprintf(cause, "sessions are grouped");
 		return (-1);
 	}

 	dstwl = NULL;
 	if (dstidx != -1)
 		dstwl = winlink_find_by_index(&dst->windows, dstidx);
 	if (dstwl != NULL) {
 		if (dstwl->window == srcwl->window)
 			return (0);
 		if (killflag) {
 			/*
 			 * Can't use session_detach as it will destroy session
 			 * if this makes it empty.
 			 */
 			session_alert_cancel(dst, dstwl);
 			winlink_stack_remove(&dst->lastw, dstwl);
 			winlink_remove(&dst->windows, dstwl);

 			/* Force select/redraw if current. */
 			if (dstwl == dst->curw) {
 				selectflag = 1;
 				dst->curw = NULL;
 			}
 		}
 	}

 	if (dstidx == -1)
 		dstidx = -1 - options_get_number(&dst->options, "base-index");
 	dstwl = session_attach(dst, srcwl->window, dstidx, cause);
 	if (dstwl == NULL)
 		return (-1);

 	if (selectflag)
 		session_select(dst, dstwl->idx);
 	server_redraw_session_group(dst);

 	return (0);
 }

 void
 server_unlink_window(struct session *s, struct winlink *wl)
 {
 	if (session_detach(s, wl))
 		server_destroy_session_group(s);
 	else
 		server_redraw_session_group(s);
 }

 void
 server_destroy_pane(struct window_pane *wp)
 {
 	struct window	*w = wp->window;

 	close(wp->fd);
 	bufferevent_free(wp->event);
 	wp->fd = -1;

 	if (options_get_number(&w->options, "remain-on-exit"))
 		return;

 	layout_close_pane(wp);
 	window_remove_pane(w, wp);

 	if (TAILQ_EMPTY(&w->panes))
 		server_kill_window(w);
 	else
 		server_redraw_window(w);
 }

 void
 server_destroy_session_group(struct session *s)
 {
 	struct session_group	*sg;

 	if ((sg = session_group_find(s)) == NULL)
 		server_destroy_session(s);
 	else {
 		TAILQ_FOREACH(s, &sg->sessions, gentry)
 			server_destroy_session(s);
 		TAILQ_REMOVE(&session_groups, sg, entry);
 		xfree(sg);
 	}
 }

 void
 server_destroy_session(struct session *s)
 {
 	struct client	*c;
 	u_int		 i;

 	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 		c = ARRAY_ITEM(&clients, i);
 		if (c == NULL || c->session != s)
 			continue;
 		c->session = NULL;
 		server_write_client(c, MSG_EXIT, NULL, 0);
 	}
 }

 void
 server_set_identify(struct client *c)
 {
 	struct timeval	tv;
 	int		delay;

 	delay = options_get_number(&c->session->options, "display-panes-time");
 	tv.tv_sec = delay / 1000;
 	tv.tv_usec = (delay % 1000) * 1000L;

 	evtimer_del(&c->identify_timer);
 	evtimer_set(&c->identify_timer, server_callback_identify, c);
 	evtimer_add(&c->identify_timer, &tv);

 	c->flags |= CLIENT_IDENTIFY;
 	c->tty.flags |= (TTY_FREEZE|TTY_NOCURSOR);
 	server_redraw_client(c);
 }

 void
 server_clear_identify(struct client *c)
 {
 	if (c->flags & CLIENT_IDENTIFY) {
 		c->flags &= ~CLIENT_IDENTIFY;
 		c->tty.flags &= ~(TTY_FREEZE|TTY_NOCURSOR);
 		server_redraw_client(c);
 	}
 }

 /* ARGSUSED */
 void
 server_callback_identify(unused int fd, unused short events, void *data)
 {
 	struct client	*c = data;

 	server_clear_identify(c);
 }

 void
 server_update_event(struct client *c)
 {
 	short	events;

 	events = 0;
 	if (!(c->flags & CLIENT_BAD))
 		events |= EV_READ;
 	if (c->ibuf.w.queued > 0)
 		events |= EV_WRITE;
 	event_del(&c->event);
 	event_set(&c->event, c->ibuf.fd, events, server_client_callback, c);
 	event_add(&c->event, NULL);
 }
	/* $Id: server-fn.c,v 1.101 2010-01-05 23:52:37 tcunha Exp $ */

	/*
	* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
	*
	* 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 <string.h>
	#include <time.h>
	#include <unistd.h>

	#include "tmux.h"

	void server_callback_identify(int, short, void *);

	void
	server_fill_environ(struct session s, struct environ env)
	{
	char tmuxvar[MAXPATHLEN], *term;
	u_int idx;

	if (session_index(s, &idx) != 0)
	fatalx("session not found");
	xsnprintf(tmuxvar, sizeof tmuxvar,
	"%s,%ld,%u", socket_path, (long) getpid(), idx);
	environ_set(env, "TMUX", tmuxvar);

	term = options_get_string(&s->options, "default-terminal");
	environ_set(env, "TERM", term);
	}

	void
	server_write_error(struct client c, const char msg)
	{
	struct msg_print_data printdata;

	strlcpy(printdata.msg, msg, sizeof printdata.msg);
	server_write_client(c, MSG_ERROR, &printdata, sizeof printdata);
	}

	void
	server_write_client(
	struct client c, enum msgtype type, const void buf, size_t len)
	{
	struct imsgbuf *ibuf = &c->ibuf;

	if (c->flags & CLIENT_BAD)
	return;
	log_debug("writing %d to client %d", type, c->ibuf.fd);
	imsg_compose(ibuf, type, PROTOCOL_VERSION, -1, -1, (void *) buf, len);
	server_update_event(c);
	}

	void
	server_write_session(
	struct session s, enum msgtype type, const void buf, size_t len)
	{
	struct client *c;
	u_int i;

	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
	c = ARRAY_ITEM(&clients, i);
	if (c == NULL \|\| c->session == NULL)
	continue;
	if (c->session == s)
	server_write_client(c, type, buf, len);
	}
	}

	void
	server_redraw_client(struct client *c)
	{
	c->flags \|= CLIENT_REDRAW;
	}

	void
	server_status_client(struct client *c)
	{
	c->flags \|= CLIENT_STATUS;
	}

	void
	server_redraw_session(struct session *s)
	{
	struct client *c;
	u_int i;

	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
	c = ARRAY_ITEM(&clients, i);
	if (c == NULL \|\| c->session == NULL)
	continue;
	if (c->session == s)
	server_redraw_client(c);
	}
	}

	void
	server_redraw_session_group(struct session *s)
	{
	struct session_group *sg;

	if ((sg = session_group_find(s)) == NULL)
	server_redraw_session(s);
	else {
	TAILQ_FOREACH(s, &sg->sessions, gentry)
	server_redraw_session(s);
	}
	}

	void
	server_status_session(struct session *s)
	{
	struct client *c;
	u_int i;

	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
	c = ARRAY_ITEM(&clients, i);
	if (c == NULL \|\| c->session == NULL)
	continue;
	if (c->session == s)
	server_status_client(c);
	}
	}

	void
	server_status_session_group(struct session *s)
	{
	struct session_group *sg;

	if ((sg = session_group_find(s)) == NULL)
	server_status_session(s);
	else {
	TAILQ_FOREACH(s, &sg->sessions, gentry)
	server_status_session(s);
	}
	}

	void
	server_redraw_window(struct window *w)
	{
	struct client *c;
	u_int i;

	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
	c = ARRAY_ITEM(&clients, i);
	if (c == NULL \|\| c->session == NULL)
	continue;
	if (c->session->curw->window == w)
	server_redraw_client(c);
	}
	w->flags \|= WINDOW_REDRAW;
	}

	void
	server_redraw_window_borders(struct window *w)
	{
	struct client *c;
	u_int i;

	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
	c = ARRAY_ITEM(&clients, i);
	if (c == NULL \|\| c->session == NULL)
	continue;
	if (c->session->curw->window == w)
	c->flags \|= CLIENT_BORDERS;
	}
	}

	void
	server_status_window(struct window *w)
	{
	struct session *s;
	u_int i;

	/*
	* This is slightly different. We want to redraw the status line of any
	* clients containing this window rather than any where it is the
	* current window.
	*/

	for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
	s = ARRAY_ITEM(&sessions, i);
	if (s != NULL && session_has(s, w))
	server_status_session(s);
	}
	}

	void
	server_lock(void)
	{
	struct client *c;
	u_int i;

	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
	c = ARRAY_ITEM(&clients, i);
	if (c == NULL \|\| c->session == NULL)
	continue;
	server_lock_client(c);
	}
	}

	void
	server_lock_session(struct session *s)
	{
	struct client *c;
	u_int i;

	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
	c = ARRAY_ITEM(&clients, i);
	if (c == NULL \|\| c->session == NULL \|\| c->session != s)
	continue;
	server_lock_client(c);
	}
	}

	void
	server_lock_client(struct client *c)
	{
	const char *cmd;
	size_t cmdlen;
	struct msg_lock_data lockdata;

	if (c->flags & CLIENT_SUSPENDED)
	return;

	cmd = options_get_string(&c->session->options, "lock-command");
	cmdlen = strlcpy(lockdata.cmd, cmd, sizeof lockdata.cmd);
	if (cmdlen >= sizeof lockdata.cmd)
	return;

	tty_stop_tty(&c->tty);
	tty_raw(&c->tty, tty_term_string(c->tty.term, TTYC_SMCUP));
	tty_raw(&c->tty, tty_term_string(c->tty.term, TTYC_CLEAR));

	c->flags \|= CLIENT_SUSPENDED;
	server_write_client(c, MSG_LOCK, &lockdata, sizeof lockdata);
	}

	void
	server_kill_window(struct window *w)
	{
	struct session *s;
	struct winlink *wl;
	u_int i;

	for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
	s = ARRAY_ITEM(&sessions, i);
	if (s == NULL \|\| !session_has(s, w))
	continue;
	if ((wl = winlink_find_by_window(&s->windows, w)) == NULL)
	continue;

	if (session_detach(s, wl))
	server_destroy_session_group(s);
	else
	server_redraw_session_group(s);
	}
	}

	int
	server_link_window(struct session src, struct winlink srcwl,
	struct session dst, int dstidx, int killflag, int selectflag, char *cause)
	{
	struct winlink *dstwl;
	struct session_group srcsg, dstsg;

	srcsg = session_group_find(src);
	dstsg = session_group_find(dst);
	if (src != dst && srcsg != NULL && dstsg != NULL && srcsg == dstsg) {
	xasprintf(cause, "sessions are grouped");
	return (-1);
	}

	dstwl = NULL;
	if (dstidx != -1)
	dstwl = winlink_find_by_index(&dst->windows, dstidx);
	if (dstwl != NULL) {
	if (dstwl->window == srcwl->window)
	return (0);
	if (killflag) {
	/*
	* Can't use session_detach as it will destroy session
	* if this makes it empty.
	*/
	session_alert_cancel(dst, dstwl);
	winlink_stack_remove(&dst->lastw, dstwl);
	winlink_remove(&dst->windows, dstwl);

	/* Force select/redraw if current. */
	if (dstwl == dst->curw) {
	selectflag = 1;
	dst->curw = NULL;
	}
	}
	}

	if (dstidx == -1)
	dstidx = -1 - options_get_number(&dst->options, "base-index");
	dstwl = session_attach(dst, srcwl->window, dstidx, cause);
	if (dstwl == NULL)
	return (-1);

	if (selectflag)
	session_select(dst, dstwl->idx);
	server_redraw_session_group(dst);

	return (0);
	}

	void
	server_unlink_window(struct session s, struct winlink wl)
	{
	if (session_detach(s, wl))
	server_destroy_session_group(s);
	else
	server_redraw_session_group(s);
	}

	void
	server_destroy_pane(struct window_pane *wp)
	{
	struct window *w = wp->window;

	close(wp->fd);
	bufferevent_free(wp->event);
	wp->fd = -1;

	if (options_get_number(&w->options, "remain-on-exit"))
	return;

	layout_close_pane(wp);
	window_remove_pane(w, wp);

	if (TAILQ_EMPTY(&w->panes))
	server_kill_window(w);
	else
	server_redraw_window(w);
	}

	void
	server_destroy_session_group(struct session *s)
	{
	struct session_group *sg;

	if ((sg = session_group_find(s)) == NULL)
	server_destroy_session(s);
	else {
	TAILQ_FOREACH(s, &sg->sessions, gentry)
	server_destroy_session(s);
	TAILQ_REMOVE(&session_groups, sg, entry);
	xfree(sg);
	}
	}

	void
	server_destroy_session(struct session *s)
	{
	struct client *c;
	u_int i;

	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
	c = ARRAY_ITEM(&clients, i);
	if (c == NULL \|\| c->session != s)
	continue;
	c->session = NULL;
	server_write_client(c, MSG_EXIT, NULL, 0);
	}
	}

	void
	server_set_identify(struct client *c)
	{
	struct timeval tv;
	int delay;

	delay = options_get_number(&c->session->options, "display-panes-time");
	tv.tv_sec = delay / 1000;
	tv.tv_usec = (delay % 1000) * 1000L;

	evtimer_del(&c->identify_timer);
	evtimer_set(&c->identify_timer, server_callback_identify, c);
	evtimer_add(&c->identify_timer, &tv);

	c->flags \|= CLIENT_IDENTIFY;
	c->tty.flags \|= (TTY_FREEZE\|TTY_NOCURSOR);
	server_redraw_client(c);
	}

	void
	server_clear_identify(struct client *c)
	{
	if (c->flags & CLIENT_IDENTIFY) {
	c->flags &= ~CLIENT_IDENTIFY;
	c->tty.flags &= ~(TTY_FREEZE\|TTY_NOCURSOR);
	server_redraw_client(c);
	}
	}

	/* ARGSUSED */
	void
	server_callback_identify(unused int fd, unused short events, void *data)
	{
	struct client *c = data;

	server_clear_identify(c);
	}

	void
	server_update_event(struct client *c)
	{
	short events;

	events = 0;
	if (!(c->flags & CLIENT_BAD))
	events \|= EV_READ;
	if (c->ibuf.w.queued > 0)
	events \|= EV_WRITE;
	event_del(&c->event);
	event_set(&c->event, c->ibuf.fd, events, server_client_callback, c);
	event_add(&c->event, NULL);
	}