cmd-new-session.c - tmux - Rivoreo Source Code Repositories

 /* $OpenBSD$ */

 /*
  * 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 <pwd.h>
 #include <stdlib.h>
 #include <string.h>
 #include <termios.h>
 #include <unistd.h>

 #include "tmux.h"

 /*
  * Create a new session and attach to the current terminal unless -d is given.
  */

 int	cmd_new_session_check(struct args *);
 int	cmd_new_session_exec(struct cmd *, struct cmd_ctx *);

 const struct cmd_entry cmd_new_session_entry = {
 	"new-session", "new",
 	"dn:s:t:x:y:", 0, 1,
 	"[-d] [-n window-name] [-s session-name] [-t target-session] "
 	"[-x width] [-y height] [command]",
 	CMD_STARTSERVER|CMD_CANTNEST|CMD_SENDENVIRON,
 	NULL,
 	cmd_new_session_check,
 	cmd_new_session_exec
 };

 int
 cmd_new_session_check(struct args *args)
 {
 	if (args_has(args, 't') && (args->argc != 0 || args_has(args, 'n')))
 		return (-1);
 	return (0);
 }

 int
 cmd_new_session_exec(struct cmd *self, struct cmd_ctx *ctx)
 {
 	struct args		*args = self->args;
 	struct session		*s, *old_s, *groupwith;
 	struct window		*w;
 	struct window_pane	*wp;
 	struct environ		 env;
 	struct termios		 tio, *tiop;
 	struct passwd		*pw;
 	const char		*newname, *target, *update, *cwd, *errstr;
 	char			*overrides, *cmd, *cause;
 	int			 detached, idx;
 	u_int			 sx, sy, i;

 	newname = args_get(args, 's');
 	if (newname != NULL) {
 		if (!session_check_name(newname)) {
 			ctx->error(ctx, "bad session name: %s", newname);
 			return (-1);
 		}
 		if (session_find(newname) != NULL) {
 			ctx->error(ctx, "duplicate session: %s", newname);
 			return (-1);
 		}
 	}

 	target = args_get(args, 't');
 	if (target != NULL) {
 		groupwith = cmd_find_session(ctx, target, 0);
 		if (groupwith == NULL)
 			return (-1);
 	} else
 		groupwith = NULL;

 	/*
 	 * There are three cases:
 	 *
 	 * 1. If cmdclient is non-NULL, new-session has been called from the
 	 *    command-line - cmdclient is to become a new attached, interactive
 	 *    client. Unless -d is given, the terminal must be opened and then
 	 *    the client sent MSG_READY.
 	 *
 	 * 2. If cmdclient is NULL, new-session has been called from an
 	 *    existing client (such as a key binding).
 	 *
 	 * 3. Both are NULL, the command was in the configuration file. Treat
 	 *    this as if -d was given even if it was not.
 	 *
 	 * In all cases, a new additional session needs to be created and
 	 * (unless -d) set as the current session for the client.
 	 */

 	/* Set -d if no client. */
 	detached = args_has(args, 'd');
 	if (ctx->cmdclient == NULL && ctx->curclient == NULL)
 		detached = 1;

 	/*
 	 * Save the termios settings, part of which is used for new windows in
 	 * this session.
 	 *
 	 * This is read again with tcgetattr() rather than using tty.tio as if
 	 * detached, tty_open won't be called. Because of this, it must be done
 	 * before opening the terminal as that calls tcsetattr() to prepare for
 	 * tmux taking over.
 	 */
 	if (ctx->cmdclient != NULL && ctx->cmdclient->tty.fd != -1) {
 		if (tcgetattr(ctx->cmdclient->tty.fd, &tio) != 0)
 			fatal("tcgetattr failed");
 		tiop = &tio;
 	} else
 		tiop = NULL;

 	/* Open the terminal if necessary. */
 	if (!detached && ctx->cmdclient != NULL) {
 		if (!(ctx->cmdclient->flags & CLIENT_TERMINAL)) {
 			ctx->error(ctx, "not a terminal");
 			return (-1);
 		}

 		overrides =
 		    options_get_string(&global_s_options, "terminal-overrides");
 		if (tty_open(&ctx->cmdclient->tty, overrides, &cause) != 0) {
 			ctx->error(ctx, "open terminal failed: %s", cause);
 			xfree(cause);
 			return (-1);
 		}
 	}

 	/* Get the new session working directory. */
 	if (ctx->cmdclient != NULL && ctx->cmdclient->cwd != NULL)
 		cwd = ctx->cmdclient->cwd;
 	else {
 		pw = getpwuid(getuid());
 		if (pw->pw_dir != NULL && *pw->pw_dir != '\0')
 			cwd = pw->pw_dir;
 		else
 			cwd = "/";
 	}

 	/* Find new session size. */
 	if (ctx->cmdclient != NULL) {
 		sx = ctx->cmdclient->tty.sx;
 		sy = ctx->cmdclient->tty.sy;
 	} else if (ctx->curclient != NULL) {
 		sx = ctx->curclient->tty.sx;
 		sy = ctx->curclient->tty.sy;
 	} else {
 		sx = 80;
 		sy = 24;
 	}
 	if (detached) {
 		if (args_has(args, 'x')) {
 			sx = strtonum(
 			    args_get(args, 'x'), 1, USHRT_MAX, &errstr);
 			if (errstr != NULL) {
 				ctx->error(ctx, "width %s", errstr);
 				return (-1);
 			}
 		}
 		if (args_has(args, 'y')) {
 			sy = strtonum(
 			    args_get(args, 'y'), 1, USHRT_MAX, &errstr);
 			if (errstr != NULL) {
 				ctx->error(ctx, "height %s", errstr);
 				return (-1);
 			}
 		}
 	}
 	if (sy > 0 && options_get_number(&global_s_options, "status"))
 		sy--;
 	if (sx == 0)
 		sx = 1;
 	if (sy == 0)
 		sy = 1;

 	/* Figure out the command for the new window. */
 	if (target != NULL)
 		cmd = NULL;
 	else if (args->argc != 0)
 		cmd = args->argv[0];
 	else
 		cmd = options_get_string(&global_s_options, "default-command");

 	/* Construct the environment. */
 	environ_init(&env);
 	update = options_get_string(&global_s_options, "update-environment");
 	if (ctx->cmdclient != NULL)
 		environ_update(update, &ctx->cmdclient->environ, &env);

 	/* Create the new session. */
 	idx = -1 - options_get_number(&global_s_options, "base-index");
 	s = session_create(newname, cmd, cwd, &env, tiop, idx, sx, sy, &cause);
 	if (s == NULL) {
 		ctx->error(ctx, "create session failed: %s", cause);
 		xfree(cause);
 		return (-1);
 	}
 	environ_free(&env);

 	/* Set the initial window name if one given. */
 	if (cmd != NULL && args_has(args, 'n')) {
 		w = s->curw->window;

 		window_set_name(w, args_get(args, 'n'));

 		options_set_number(&w->options, "automatic-rename", 0);
 	}

 	/*
 	 * If a target session is given, this is to be part of a session group,
 	 * so add it to the group and synchronize.
 	 */
 	if (groupwith != NULL) {
 		session_group_add(groupwith, s);
 		session_group_synchronize_to(s);
 		session_select(s, RB_ROOT(&s->windows)->idx);
 	}

 	/*
 	 * Set the client to the new session. If a command client exists, it is
 	 * taking this session and needs to get MSG_READY and stay around.
 	 */
 	if (!detached) {
 		if (ctx->cmdclient != NULL) {
 			server_write_client(ctx->cmdclient, MSG_READY, NULL, 0);

 			old_s = ctx->cmdclient->session;
 			if (old_s != NULL)
 				ctx->cmdclient->last_session = old_s;
 			ctx->cmdclient->session = s;
 			notify_attached_session_changed(ctx->cmdclient);
 			session_update_activity(s);
 			server_redraw_client(ctx->cmdclient);
 		} else {
 			old_s = ctx->curclient->session;
 			if (old_s != NULL)
 				ctx->curclient->last_session = old_s;
 			ctx->curclient->session = s;
 			notify_attached_session_changed(ctx->curclient);
 			session_update_activity(s);
 			server_redraw_client(ctx->curclient);
 		}
 	}
 	recalculate_sizes();
 	server_update_socket();

 	/*
 	 * If there are still configuration file errors to display, put the new
 	 * session's current window into more mode and display them now.
 	 */
 	if (cfg_finished && !ARRAY_EMPTY(&cfg_causes)) {
 		wp = s->curw->window->active;
 		window_pane_set_mode(wp, &window_copy_mode);
 		window_copy_init_for_output(wp);
 		for (i = 0; i < ARRAY_LENGTH(&cfg_causes); i++) {
 			cause = ARRAY_ITEM(&cfg_causes, i);
 			window_copy_add(wp, "%s", cause);
 			xfree(cause);
 		}
 		ARRAY_FREE(&cfg_causes);
 	}

 	return (!detached);	/* 1 means don't tell command client to exit */
 }
	/* $OpenBSD$ */

	/*
	* 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 <pwd.h>
	#include <stdlib.h>
	#include <string.h>
	#include <termios.h>
	#include <unistd.h>

	#include "tmux.h"

	/*
	* Create a new session and attach to the current terminal unless -d is given.
	*/

	int cmd_new_session_check(struct args *);
	int cmd_new_session_exec(struct cmd , struct cmd_ctx );

	const struct cmd_entry cmd_new_session_entry = {
	"new-session", "new",
	"dn:s:t:x:y:", 0, 1,
	"[-d] [-n window-name] [-s session-name] [-t target-session] "
	"[-x width] [-y height] [command]",
	CMD_STARTSERVER\|CMD_CANTNEST\|CMD_SENDENVIRON,
	NULL,
	cmd_new_session_check,
	cmd_new_session_exec
	};

	int
	cmd_new_session_check(struct args *args)
	{
	if (args_has(args, 't') && (args->argc != 0 \|\| args_has(args, 'n')))
	return (-1);
	return (0);
	}

	int
	cmd_new_session_exec(struct cmd self, struct cmd_ctx ctx)
	{
	struct args *args = self->args;
	struct session s, old_s, *groupwith;
	struct window *w;
	struct window_pane *wp;
	struct environ env;
	struct termios tio, *tiop;
	struct passwd *pw;
	const char newname, target, update, cwd, *errstr;
	char overrides, cmd, *cause;
	int detached, idx;
	u_int sx, sy, i;

	newname = args_get(args, 's');
	if (newname != NULL) {
	if (!session_check_name(newname)) {
	ctx->error(ctx, "bad session name: %s", newname);
	return (-1);
	}
	if (session_find(newname) != NULL) {
	ctx->error(ctx, "duplicate session: %s", newname);
	return (-1);
	}
	}

	target = args_get(args, 't');
	if (target != NULL) {
	groupwith = cmd_find_session(ctx, target, 0);
	if (groupwith == NULL)
	return (-1);
	} else
	groupwith = NULL;

	/*
	* There are three cases:
	*
	* 1. If cmdclient is non-NULL, new-session has been called from the
	* command-line - cmdclient is to become a new attached, interactive
	* client. Unless -d is given, the terminal must be opened and then
	* the client sent MSG_READY.
	*
	* 2. If cmdclient is NULL, new-session has been called from an
	* existing client (such as a key binding).
	*
	* 3. Both are NULL, the command was in the configuration file. Treat
	* this as if -d was given even if it was not.
	*
	* In all cases, a new additional session needs to be created and
	* (unless -d) set as the current session for the client.
	*/

	/* Set -d if no client. */
	detached = args_has(args, 'd');
	if (ctx->cmdclient == NULL && ctx->curclient == NULL)
	detached = 1;

	/*
	* Save the termios settings, part of which is used for new windows in
	* this session.
	*
	* This is read again with tcgetattr() rather than using tty.tio as if
	* detached, tty_open won't be called. Because of this, it must be done
	* before opening the terminal as that calls tcsetattr() to prepare for
	* tmux taking over.
	*/
	if (ctx->cmdclient != NULL && ctx->cmdclient->tty.fd != -1) {
	if (tcgetattr(ctx->cmdclient->tty.fd, &tio) != 0)
	fatal("tcgetattr failed");
	tiop = &tio;
	} else
	tiop = NULL;

	/* Open the terminal if necessary. */
	if (!detached && ctx->cmdclient != NULL) {
	if (!(ctx->cmdclient->flags & CLIENT_TERMINAL)) {
	ctx->error(ctx, "not a terminal");
	return (-1);
	}

	overrides =
	options_get_string(&global_s_options, "terminal-overrides");
	if (tty_open(&ctx->cmdclient->tty, overrides, &cause) != 0) {
	ctx->error(ctx, "open terminal failed: %s", cause);
	xfree(cause);
	return (-1);
	}
	}

	/* Get the new session working directory. */
	if (ctx->cmdclient != NULL && ctx->cmdclient->cwd != NULL)
	cwd = ctx->cmdclient->cwd;
	else {
	pw = getpwuid(getuid());
	if (pw->pw_dir != NULL && *pw->pw_dir != '\0')
	cwd = pw->pw_dir;
	else
	cwd = "/";
	}

	/* Find new session size. */
	if (ctx->cmdclient != NULL) {
	sx = ctx->cmdclient->tty.sx;
	sy = ctx->cmdclient->tty.sy;
	} else if (ctx->curclient != NULL) {
	sx = ctx->curclient->tty.sx;
	sy = ctx->curclient->tty.sy;
	} else {
	sx = 80;
	sy = 24;
	}
	if (detached) {
	if (args_has(args, 'x')) {
	sx = strtonum(
	args_get(args, 'x'), 1, USHRT_MAX, &errstr);
	if (errstr != NULL) {
	ctx->error(ctx, "width %s", errstr);
	return (-1);
	}
	}
	if (args_has(args, 'y')) {
	sy = strtonum(
	args_get(args, 'y'), 1, USHRT_MAX, &errstr);
	if (errstr != NULL) {
	ctx->error(ctx, "height %s", errstr);
	return (-1);
	}
	}
	}
	if (sy > 0 && options_get_number(&global_s_options, "status"))
	sy--;
	if (sx == 0)
	sx = 1;
	if (sy == 0)
	sy = 1;

	/* Figure out the command for the new window. */
	if (target != NULL)
	cmd = NULL;
	else if (args->argc != 0)
	cmd = args->argv[0];
	else
	cmd = options_get_string(&global_s_options, "default-command");

	/* Construct the environment. */
	environ_init(&env);
	update = options_get_string(&global_s_options, "update-environment");
	if (ctx->cmdclient != NULL)
	environ_update(update, &ctx->cmdclient->environ, &env);

	/* Create the new session. */
	idx = -1 - options_get_number(&global_s_options, "base-index");
	s = session_create(newname, cmd, cwd, &env, tiop, idx, sx, sy, &cause);
	if (s == NULL) {
	ctx->error(ctx, "create session failed: %s", cause);
	xfree(cause);
	return (-1);
	}
	environ_free(&env);

	/* Set the initial window name if one given. */
	if (cmd != NULL && args_has(args, 'n')) {
	w = s->curw->window;

	window_set_name(w, args_get(args, 'n'));

	options_set_number(&w->options, "automatic-rename", 0);
	}

	/*
	* If a target session is given, this is to be part of a session group,
	* so add it to the group and synchronize.
	*/
	if (groupwith != NULL) {
	session_group_add(groupwith, s);
	session_group_synchronize_to(s);
	session_select(s, RB_ROOT(&s->windows)->idx);
	}

	/*
	* Set the client to the new session. If a command client exists, it is
	* taking this session and needs to get MSG_READY and stay around.
	*/
	if (!detached) {
	if (ctx->cmdclient != NULL) {
	server_write_client(ctx->cmdclient, MSG_READY, NULL, 0);

	old_s = ctx->cmdclient->session;
	if (old_s != NULL)
	ctx->cmdclient->last_session = old_s;
	ctx->cmdclient->session = s;
	notify_attached_session_changed(ctx->cmdclient);
	session_update_activity(s);
	server_redraw_client(ctx->cmdclient);
	} else {
	old_s = ctx->curclient->session;
	if (old_s != NULL)
	ctx->curclient->last_session = old_s;
	ctx->curclient->session = s;
	notify_attached_session_changed(ctx->curclient);
	session_update_activity(s);
	server_redraw_client(ctx->curclient);
	}
	}
	recalculate_sizes();
	server_update_socket();

	/*
	* If there are still configuration file errors to display, put the new
	* session's current window into more mode and display them now.
	*/
	if (cfg_finished && !ARRAY_EMPTY(&cfg_causes)) {
	wp = s->curw->window->active;
	window_pane_set_mode(wp, &window_copy_mode);
	window_copy_init_for_output(wp);
	for (i = 0; i < ARRAY_LENGTH(&cfg_causes); i++) {
	cause = ARRAY_ITEM(&cfg_causes, i);
	window_copy_add(wp, "%s", cause);
	xfree(cause);
	}
	ARRAY_FREE(&cfg_causes);
	}

	return (!detached); /* 1 means don't tell command client to exit */
	}