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

 /* $Id: server-fn.c,v 1.19 2007-10-04 19:22:26 nicm 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 <unistd.h>

 #include "tmux.h"

 /* Find session from sessid. */
 struct session *
 server_find_sessid(struct sessid *sid, char **cause)
 {
 	struct session *s;
 	u_int		i, n;

 	if (*sid->name != '\0') {
 		sid->name[(sizeof sid->name) - 1] = '\0';
 		if ((s = session_find(sid->name)) == NULL) {
 			xasprintf(cause, "session not found: %s", sid->name);
 			return (NULL);
 		}
 		return (s);
 	}

 	if (sid->pid != -1) {
 		if (sid->pid != getpid()) {
 			xasprintf(cause, "wrong server: %lld", sid->pid);
 			return (NULL);
 		}
 		if (sid->idx > ARRAY_LENGTH(&sessions)) {
 			xasprintf(cause, "index out of range: %u", sid->idx);
 			return (NULL);
 		}
 		if ((s = ARRAY_ITEM(&sessions, sid->idx)) == NULL) {
 			xasprintf(cause, "session doesn't exist: %u", sid->idx);
 			return (NULL);
 		}
 		return (s);
 	}

 	s = NULL;
 	n = 0;
 	for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
 		if (ARRAY_ITEM(&sessions, i) != NULL) {
 			s = ARRAY_ITEM(&sessions, i);
 			n++;
 		}
 	}
 	if (s == NULL) {
 		xasprintf(cause, "no sessions found");
 		return (NULL);
 	}
 	if (n != 1) {
 		xasprintf(cause, "multiple sessions and session not specified");
 		return (NULL);
 	}
 	return (s);
 }

 void
 server_write_client(
     struct client *c, enum hdrtype type, const void *buf, size_t len)
 {
 	struct hdr	 hdr;

 	log_debug("writing %d to client %d", type, c->fd);

 	hdr.type = type;
 	hdr.size = len;

 	buffer_write(c->out, &hdr, sizeof hdr);
 	if (buf != NULL)
 		buffer_write(c->out, buf, len);
 }

 void
 server_write_session(
     struct session *s, enum hdrtype 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 == s)
 			server_write_client(c, type, buf, len);
 	}
 }

 void
 server_write_window(
     struct window *w, enum hdrtype 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 && c->session->window == w) {
 			if (c->flags & CLIENT_HOLD) /* XXX OUTPUT only */
 				continue;
 			server_write_client(c, type, buf, len);
 		}
 	}
 }

 void
 server_redraw_status(struct client *c)
 {
 	struct hdr	hdr;
 	size_t		size;

 	if (status_lines == 0 || c->sy <= status_lines)
 		return;

 	buffer_ensure(c->out, sizeof hdr);
 	buffer_add(c->out, sizeof hdr);
 	size = BUFFER_USED(c->out);

 	status_write(c);

 	size = BUFFER_USED(c->out) - size;
 	hdr.type = MSG_DATA;
 	hdr.size = size;
 	memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
 }

 void
 server_clear_client(struct client *c)
 {
 	struct screen	*s = &c->session->window->screen;
 	struct hdr	 hdr;
 	size_t		 size;
 	u_int		 i;

 	buffer_ensure(c->out, sizeof hdr);
 	buffer_add(c->out, sizeof hdr);
 	size = BUFFER_USED(c->out);

 	input_store_zero(c->out, CODE_CURSOROFF);
 	for (i = 0; i < s->sy; i++) {
 		input_store_two(c->out, CODE_CURSORMOVE, i + 1, 1);
 		input_store_zero(c->out, CODE_CLEARLINE);
 	}
 	input_store_two(c->out, CODE_CURSORMOVE, s->cy + 1, s->cx + 1);
 	if (s->mode & MODE_CURSOR)
 		input_store_zero(c->out, CODE_CURSORON);

 	size = BUFFER_USED(c->out) - size;
 	hdr.type = MSG_DATA;
 	hdr.size = size;
 	memcpy(BUFFER_IN(c->out) - size - sizeof hdr,  &hdr, sizeof hdr);
 }

 void
 server_redraw_client(struct client *c)
 {
 	struct screen	*s = &c->session->window->screen;
 	struct hdr	 hdr;
 	size_t		 size;

 	buffer_ensure(c->out, sizeof hdr);
 	buffer_add(c->out, sizeof hdr);
 	size = BUFFER_USED(c->out);

 	screen_draw(s, c->out, 0, s->sy - 1);

 	size = BUFFER_USED(c->out) - size;
 	log_debug("redrawing screen, %zu bytes", size);
 	if (size != 0) {
 		hdr.type = MSG_DATA;
 		hdr.size = size;
 		memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
 	} else
 		buffer_reverse_add(c->out, sizeof hdr);

 	server_redraw_status(c);
 }

 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 == s)
 			server_redraw_client(c);
 	}
 }

 void
 server_clear_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 && c->session->window == w)
 			server_clear_client(c);
 	}
 }

 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 && c->session->window == w)
 			server_redraw_client(c);
 	}
 }

 void
 server_write_message(struct client *c, const char *fmt, ...)
 {
 	struct hdr	 hdr;
 	va_list		 ap;
 	char		*msg;
 	size_t		 size;
 	u_int		 i;

 	buffer_ensure(c->out, sizeof hdr);
 	buffer_add(c->out, sizeof hdr);
 	size = BUFFER_USED(c->out);

 	input_store_zero(c->out, CODE_CURSOROFF);
 	input_store_two(c->out, CODE_CURSORMOVE, c->sy, 1);
 	input_store_two(c->out, CODE_ATTRIBUTES, ATTR_REVERSE, 0x88);
 	va_start(ap, fmt);
 	xvasprintf(&msg, fmt, ap);
 	va_end(ap);
 	if (strlen(msg) > c->sx - 1)
 		msg[c->sx - 1] = '\0';
 	buffer_write(c->out, msg, strlen(msg));
 	for (i = strlen(msg); i < c->sx; i++)
 		input_store8(c->out, ' ');
 	xfree(msg);

 	size = BUFFER_USED(c->out) - size;
 	hdr.type = MSG_DATA;
 	hdr.size = size;
 	memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);

 	hdr.type = MSG_PAUSE;
 	hdr.size = 0;
 	buffer_write(c->out, &hdr, sizeof hdr);

 	buffer_ensure(c->out, sizeof hdr);
 	buffer_add(c->out, sizeof hdr);
 	size = BUFFER_USED(c->out);

 	if (status_lines == 0) {
 		screen_draw(
 		    &c->session->window->screen, c->out, c->sy - 1, c->sy - 1);
 	} else
 		status_write(c);

 	size = BUFFER_USED(c->out) - size;
 	hdr.type = MSG_DATA;
 	hdr.size = size;
 	memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
 }
	/* $Id: server-fn.c,v 1.19 2007-10-04 19:22:26 nicm 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 <unistd.h>

	#include "tmux.h"

	/* Find session from sessid. */
	struct session *
	server_find_sessid(struct sessid sid, char *cause)
	{
	struct session *s;
	u_int i, n;

	if (*sid->name != '\0') {
	sid->name[(sizeof sid->name) - 1] = '\0';
	if ((s = session_find(sid->name)) == NULL) {
	xasprintf(cause, "session not found: %s", sid->name);
	return (NULL);
	}
	return (s);
	}

	if (sid->pid != -1) {
	if (sid->pid != getpid()) {
	xasprintf(cause, "wrong server: %lld", sid->pid);
	return (NULL);
	}
	if (sid->idx > ARRAY_LENGTH(&sessions)) {
	xasprintf(cause, "index out of range: %u", sid->idx);
	return (NULL);
	}
	if ((s = ARRAY_ITEM(&sessions, sid->idx)) == NULL) {
	xasprintf(cause, "session doesn't exist: %u", sid->idx);
	return (NULL);
	}
	return (s);
	}

	s = NULL;
	n = 0;
	for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
	if (ARRAY_ITEM(&sessions, i) != NULL) {
	s = ARRAY_ITEM(&sessions, i);
	n++;
	}
	}
	if (s == NULL) {
	xasprintf(cause, "no sessions found");
	return (NULL);
	}
	if (n != 1) {
	xasprintf(cause, "multiple sessions and session not specified");
	return (NULL);
	}
	return (s);
	}

	void
	server_write_client(
	struct client c, enum hdrtype type, const void buf, size_t len)
	{
	struct hdr hdr;

	log_debug("writing %d to client %d", type, c->fd);

	hdr.type = type;
	hdr.size = len;

	buffer_write(c->out, &hdr, sizeof hdr);
	if (buf != NULL)
	buffer_write(c->out, buf, len);
	}

	void
	server_write_session(
	struct session s, enum hdrtype 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 == s)
	server_write_client(c, type, buf, len);
	}
	}

	void
	server_write_window(
	struct window w, enum hdrtype 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 && c->session->window == w) {
	if (c->flags & CLIENT_HOLD) /* XXX OUTPUT only */
	continue;
	server_write_client(c, type, buf, len);
	}
	}
	}

	void
	server_redraw_status(struct client *c)
	{
	struct hdr hdr;
	size_t size;

	if (status_lines == 0 \|\| c->sy <= status_lines)
	return;

	buffer_ensure(c->out, sizeof hdr);
	buffer_add(c->out, sizeof hdr);
	size = BUFFER_USED(c->out);

	status_write(c);

	size = BUFFER_USED(c->out) - size;
	hdr.type = MSG_DATA;
	hdr.size = size;
	memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
	}

	void
	server_clear_client(struct client *c)
	{
	struct screen *s = &c->session->window->screen;
	struct hdr hdr;
	size_t size;
	u_int i;

	buffer_ensure(c->out, sizeof hdr);
	buffer_add(c->out, sizeof hdr);
	size = BUFFER_USED(c->out);

	input_store_zero(c->out, CODE_CURSOROFF);
	for (i = 0; i < s->sy; i++) {
	input_store_two(c->out, CODE_CURSORMOVE, i + 1, 1);
	input_store_zero(c->out, CODE_CLEARLINE);
	}
	input_store_two(c->out, CODE_CURSORMOVE, s->cy + 1, s->cx + 1);
	if (s->mode & MODE_CURSOR)
	input_store_zero(c->out, CODE_CURSORON);

	size = BUFFER_USED(c->out) - size;
	hdr.type = MSG_DATA;
	hdr.size = size;
	memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
	}

	void
	server_redraw_client(struct client *c)
	{
	struct screen *s = &c->session->window->screen;
	struct hdr hdr;
	size_t size;

	buffer_ensure(c->out, sizeof hdr);
	buffer_add(c->out, sizeof hdr);
	size = BUFFER_USED(c->out);

	screen_draw(s, c->out, 0, s->sy - 1);

	size = BUFFER_USED(c->out) - size;
	log_debug("redrawing screen, %zu bytes", size);
	if (size != 0) {
	hdr.type = MSG_DATA;
	hdr.size = size;
	memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
	} else
	buffer_reverse_add(c->out, sizeof hdr);

	server_redraw_status(c);
	}

	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 == s)
	server_redraw_client(c);
	}
	}

	void
	server_clear_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 && c->session->window == w)
	server_clear_client(c);
	}
	}

	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 && c->session->window == w)
	server_redraw_client(c);
	}
	}

	void
	server_write_message(struct client c, const char fmt, ...)
	{
	struct hdr hdr;
	va_list ap;
	char *msg;
	size_t size;
	u_int i;

	buffer_ensure(c->out, sizeof hdr);
	buffer_add(c->out, sizeof hdr);
	size = BUFFER_USED(c->out);

	input_store_zero(c->out, CODE_CURSOROFF);
	input_store_two(c->out, CODE_CURSORMOVE, c->sy, 1);
	input_store_two(c->out, CODE_ATTRIBUTES, ATTR_REVERSE, 0x88);
	va_start(ap, fmt);
	xvasprintf(&msg, fmt, ap);
	va_end(ap);
	if (strlen(msg) > c->sx - 1)
	msg[c->sx - 1] = '\0';
	buffer_write(c->out, msg, strlen(msg));
	for (i = strlen(msg); i < c->sx; i++)
	input_store8(c->out, ' ');
	xfree(msg);

	size = BUFFER_USED(c->out) - size;
	hdr.type = MSG_DATA;
	hdr.size = size;
	memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);

	hdr.type = MSG_PAUSE;
	hdr.size = 0;
	buffer_write(c->out, &hdr, sizeof hdr);

	buffer_ensure(c->out, sizeof hdr);
	buffer_add(c->out, sizeof hdr);
	size = BUFFER_USED(c->out);

	if (status_lines == 0) {
	screen_draw(
	&c->session->window->screen, c->out, c->sy - 1, c->sy - 1);
	} else
	status_write(c);

	size = BUFFER_USED(c->out) - size;
	hdr.type = MSG_DATA;
	hdr.size = size;
	memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
	}