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

 /* $OpenBSD$ */

 /*
  * Copyright (c) 2007 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 <errno.h>
 #include <fcntl.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.
  */

 #define NEW_SESSION_TEMPLATE "#{session_name}:"

 static enum cmd_retval	cmd_new_session_exec(struct cmd *, struct cmdq_item *);

 const struct cmd_entry cmd_new_session_entry = {
 	.name = "new-session",
 	.alias = "new",

 	.args = { "Ac:dDe:EF:f:n:Ps:t:x:Xy:", 0, -1 },
 	.usage = "[-AdDEPX] [-c start-directory] [-e environment] [-F format] "
 		 "[-f flags] [-n window-name] [-s session-name] "
 		 CMD_TARGET_SESSION_USAGE " [-x width] [-y height] [command]",

 	.target = { 't', CMD_FIND_SESSION, CMD_FIND_CANFAIL },

 	.flags = CMD_STARTSERVER,
 	.exec = cmd_new_session_exec
 };

 const struct cmd_entry cmd_has_session_entry = {
 	.name = "has-session",
 	.alias = "has",

 	.args = { "t:", 0, 0 },
 	.usage = CMD_TARGET_SESSION_USAGE,

 	.target = { 't', CMD_FIND_SESSION, 0 },

 	.flags = 0,
 	.exec = cmd_new_session_exec
 };

 static enum cmd_retval
 cmd_new_session_exec(struct cmd *self, struct cmdq_item *item)
 {
 	struct args		*args = cmd_get_args(self);
 	struct cmd_find_state	*current = cmdq_get_current(item);
 	struct cmd_find_state	*target = cmdq_get_target(item);
 	struct client		*c = cmdq_get_client(item);
 	struct session		*s, *as, *groupwith = NULL;
 	struct environ		*env;
 	struct options		*oo;
 	struct termios		 tio, *tiop;
 	struct session_group	*sg = NULL;
 	const char		*errstr, *template, *group, *tmp, *add;
 	char			*cause, *cwd = NULL, *cp, *newname = NULL;
 	char			*name, *prefix = NULL;
 	int			 detached, already_attached, is_control = 0;
 	u_int			 sx, sy, dsx, dsy;
 	struct spawn_context	 sc;
 	enum cmd_retval		 retval;
 	struct cmd_find_state    fs;
 	struct args_value	*value;

 	if (cmd_get_entry(self) == &cmd_has_session_entry) {
 		/*
 		 * cmd_find_target() will fail if the session cannot be found,
 		 * so always return success here.
 		 */
 		return (CMD_RETURN_NORMAL);
 	}

 	if (args_has(args, 't') && (args->argc != 0 || args_has(args, 'n'))) {
 		cmdq_error(item, "command or window name given with target");
 		return (CMD_RETURN_ERROR);
 	}

 	tmp = args_get(args, 's');
 	if (tmp != NULL) {
 		name = format_single(item, tmp, c, NULL, NULL, NULL);
 		newname = session_check_name(name);
 		if (newname == NULL) {
 			cmdq_error(item, "invalid session: %s", name);
 			free(name);
 			return (CMD_RETURN_ERROR);
 		}
 		free(name);
 	}
 	if (args_has(args, 'A')) {
 		if (newname != NULL)
 			as = session_find(newname);
 		else
 			as = target->s;
 		if (as != NULL) {
 			retval = cmd_attach_session(item, as->name,
 			    args_has(args, 'D'), args_has(args, 'X'), 0, NULL,
 			    args_has(args, 'E'), args_get(args, 'f'));
 			free(newname);
 			return (retval);
 		}
 	}
 	if (newname != NULL && session_find(newname) != NULL) {
 		cmdq_error(item, "duplicate session: %s", newname);
 		goto fail;
 	}

 	/* Is this going to be part of a session group? */
 	group = args_get(args, 't');
 	if (group != NULL) {
 		groupwith = target->s;
 		if (groupwith == NULL)
 			sg = session_group_find(group);
 		else
 			sg = session_group_contains(groupwith);
 		if (sg != NULL)
 			prefix = xstrdup(sg->name);
 		else if (groupwith != NULL)
 			prefix = xstrdup(groupwith->name);
 		else {
 			prefix = session_check_name(group);
 			if (prefix == NULL) {
 				cmdq_error(item, "invalid session group: %s",
 				    group);
 				goto fail;
 			}
 		}
 	}

 	/* Set -d if no client. */
 	detached = args_has(args, 'd');
 	if (c == NULL)
 		detached = 1;
 	else if (c->flags & CLIENT_CONTROL)
 		is_control = 1;

 	/* Is this client already attached? */
 	already_attached = 0;
 	if (c != NULL && c->session != NULL)
 		already_attached = 1;

 	/* Get the new session working directory. */
 	if ((tmp = args_get(args, 'c')) != NULL)
 		cwd = format_single(item, tmp, c, NULL, NULL, NULL);
 	else
 		cwd = xstrdup(server_client_get_cwd(c, NULL));

 	/*
 	 * If this is a new client, check for nesting and save the termios
 	 * settings (part of which is used for new windows in this session).
 	 *
 	 * tcgetattr() is used rather than using tty.tio since if the client is
 	 * detached, tty_open won't be called. It must be done before opening
 	 * the terminal as that calls tcsetattr() to prepare for tmux taking
 	 * over.
 	 */
 	if (!detached &&
 	    !already_attached &&
 	    c->fd != -1 &&
 	    (~c->flags & CLIENT_CONTROL)) {
 		if (server_client_check_nested(cmdq_get_client(item))) {
 			cmdq_error(item, "sessions should be nested with care, "
 			    "unset $TMUX to force");
 			goto fail;
 		}
 		if (tcgetattr(c->fd, &tio) != 0)
 			fatal("tcgetattr failed");
 		tiop = &tio;
 	} else
 		tiop = NULL;

 	/* Open the terminal if necessary. */
 	if (!detached && !already_attached) {
 		if (server_client_open(c, &cause) != 0) {
 			cmdq_error(item, "open terminal failed: %s", cause);
 			free(cause);
 			goto fail;
 		}
 	}

 	/* Get default session size. */
 	if (args_has(args, 'x')) {
 		tmp = args_get(args, 'x');
 		if (strcmp(tmp, "-") == 0) {
 			if (c != NULL)
 				dsx = c->tty.sx;
 			else
 				dsx = 80;
 		} else {
 			dsx = strtonum(tmp, 1, USHRT_MAX, &errstr);
 			if (errstr != NULL) {
 				cmdq_error(item, "width %s", errstr);
 				goto fail;
 			}
 		}
 	} else
 		dsx = 80;
 	if (args_has(args, 'y')) {
 		tmp = args_get(args, 'y');
 		if (strcmp(tmp, "-") == 0) {
 			if (c != NULL)
 				dsy = c->tty.sy;
 			else
 				dsy = 24;
 		} else {
 			dsy = strtonum(tmp, 1, USHRT_MAX, &errstr);
 			if (errstr != NULL) {
 				cmdq_error(item, "height %s", errstr);
 				goto fail;
 			}
 		}
 	} else
 		dsy = 24;

 	/* Find new session size. */
 	if (!detached && !is_control) {
 		sx = c->tty.sx;
 		sy = c->tty.sy;
 		if (sy > 0 && options_get_number(global_s_options, "status"))
 			sy--;
 	} else {
 		tmp = options_get_string(global_s_options, "default-size");
 		if (sscanf(tmp, "%ux%u", &sx, &sy) != 2) {
 			sx = dsx;
 			sy = dsy;
 		} else {
 			if (args_has(args, 'x'))
 				sx = dsx;
 			if (args_has(args, 'y'))
 				sy = dsy;
 		}
 	}
 	if (sx == 0)
 		sx = 1;
 	if (sy == 0)
 		sy = 1;

 	/* Create the new session. */
 	oo = options_create(global_s_options);
 	if (args_has(args, 'x') || args_has(args, 'y')) {
 		if (!args_has(args, 'x'))
 			dsx = sx;
 		if (!args_has(args, 'y'))
 			dsy = sy;
 		options_set_string(oo, "default-size", 0, "%ux%u", dsx, dsy);
 	}
 	env = environ_create();
 	if (c != NULL && !args_has(args, 'E'))
 		environ_update(global_s_options, c->environ, env);
 	add = args_first_value(args, 'e', &value);
 	while (add != NULL) {
 		environ_put(env, add, 0);
 		add = args_next_value(&value);
 	}
 	s = session_create(prefix, newname, cwd, env, oo, tiop);

 	/* Spawn the initial window. */
 	memset(&sc, 0, sizeof sc);
 	sc.item = item;
 	sc.s = s;
 	sc.tc = c;

 	sc.name = args_get(args, 'n');
 	sc.argc = args->argc;
 	sc.argv = args->argv;

 	sc.idx = -1;
 	sc.cwd = args_get(args, 'c');

 	sc.flags = 0;

 	if (spawn_window(&sc, &cause) == NULL) {
 		session_destroy(s, 0, __func__);
 		cmdq_error(item, "create window failed: %s", cause);
 		free(cause);
 		goto fail;
 	}

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

 	/*
 	 * 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 (args_has(args, 'f'))
 			server_client_set_flags(c, args_get(args, 'f'));
 		if (!already_attached) {
 			if (~c->flags & CLIENT_CONTROL)
 				proc_send(c->peer, MSG_READY, -1, NULL, 0);
 		} else if (c->session != NULL)
 			c->last_session = c->session;
 		c->session = s;
 		if (~cmdq_get_flags(item) & CMDQ_STATE_REPEAT)
 			server_client_set_key_table(c, NULL);
 		tty_update_client_offset(c);
 		status_timer_start(c);
 		notify_client("client-session-changed", c);
 		session_update_activity(s, NULL);
 		gettimeofday(&s->last_attached_time, NULL);
 		server_redraw_client(c);
 	}
 	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)
 		cfg_show_causes(s);

 	/* Print if requested. */
 	if (args_has(args, 'P')) {
 		if ((template = args_get(args, 'F')) == NULL)
 			template = NEW_SESSION_TEMPLATE;
 		cp = format_single(item, template, c, s, s->curw, NULL);
 		cmdq_print(item, "%s", cp);
 		free(cp);
 	}

 	if (!detached)
 		c->flags |= CLIENT_ATTACHED;
 	if (!args_has(args, 'd'))
 		cmd_find_from_session(current, s, 0);

 	cmd_find_from_session(&fs, s, 0);
 	cmdq_insert_hook(s, item, &fs, "after-new-session");

 	free(cwd);
 	free(newname);
 	free(prefix);
 	return (CMD_RETURN_NORMAL);

 fail:
 	free(cwd);
 	free(newname);
 	free(prefix);
 	return (CMD_RETURN_ERROR);
 }
	/* $OpenBSD$ */

	/*
	* Copyright (c) 2007 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 <errno.h>
	#include <fcntl.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.
	*/

	#define NEW_SESSION_TEMPLATE "#{session_name}:"

	static enum cmd_retval cmd_new_session_exec(struct cmd , struct cmdq_item );

	const struct cmd_entry cmd_new_session_entry = {
	.name = "new-session",
	.alias = "new",

	.args = { "Ac:dDe:EF:f:n:Ps:t:x:Xy:", 0, -1 },
	.usage = "[-AdDEPX] [-c start-directory] [-e environment] [-F format] "
	"[-f flags] [-n window-name] [-s session-name] "
	CMD_TARGET_SESSION_USAGE " [-x width] [-y height] [command]",

	.target = { 't', CMD_FIND_SESSION, CMD_FIND_CANFAIL },

	.flags = CMD_STARTSERVER,
	.exec = cmd_new_session_exec
	};

	const struct cmd_entry cmd_has_session_entry = {
	.name = "has-session",
	.alias = "has",

	.args = { "t:", 0, 0 },
	.usage = CMD_TARGET_SESSION_USAGE,

	.target = { 't', CMD_FIND_SESSION, 0 },

	.flags = 0,
	.exec = cmd_new_session_exec
	};

	static enum cmd_retval
	cmd_new_session_exec(struct cmd self, struct cmdq_item item)
	{
	struct args *args = cmd_get_args(self);
	struct cmd_find_state *current = cmdq_get_current(item);
	struct cmd_find_state *target = cmdq_get_target(item);
	struct client *c = cmdq_get_client(item);
	struct session s, as, *groupwith = NULL;
	struct environ *env;
	struct options *oo;
	struct termios tio, *tiop;
	struct session_group *sg = NULL;
	const char errstr, template, group, tmp, *add;
	char cause, cwd = NULL, cp, newname = NULL;
	char name, prefix = NULL;
	int detached, already_attached, is_control = 0;
	u_int sx, sy, dsx, dsy;
	struct spawn_context sc;
	enum cmd_retval retval;
	struct cmd_find_state fs;
	struct args_value *value;

	if (cmd_get_entry(self) == &cmd_has_session_entry) {
	/*
	* cmd_find_target() will fail if the session cannot be found,
	* so always return success here.
	*/
	return (CMD_RETURN_NORMAL);
	}

	if (args_has(args, 't') && (args->argc != 0 \|\| args_has(args, 'n'))) {
	cmdq_error(item, "command or window name given with target");
	return (CMD_RETURN_ERROR);
	}

	tmp = args_get(args, 's');
	if (tmp != NULL) {
	name = format_single(item, tmp, c, NULL, NULL, NULL);
	newname = session_check_name(name);
	if (newname == NULL) {
	cmdq_error(item, "invalid session: %s", name);
	free(name);
	return (CMD_RETURN_ERROR);
	}
	free(name);
	}
	if (args_has(args, 'A')) {
	if (newname != NULL)
	as = session_find(newname);
	else
	as = target->s;
	if (as != NULL) {
	retval = cmd_attach_session(item, as->name,
	args_has(args, 'D'), args_has(args, 'X'), 0, NULL,
	args_has(args, 'E'), args_get(args, 'f'));
	free(newname);
	return (retval);
	}
	}
	if (newname != NULL && session_find(newname) != NULL) {
	cmdq_error(item, "duplicate session: %s", newname);
	goto fail;
	}

	/* Is this going to be part of a session group? */
	group = args_get(args, 't');
	if (group != NULL) {
	groupwith = target->s;
	if (groupwith == NULL)
	sg = session_group_find(group);
	else
	sg = session_group_contains(groupwith);
	if (sg != NULL)
	prefix = xstrdup(sg->name);
	else if (groupwith != NULL)
	prefix = xstrdup(groupwith->name);
	else {
	prefix = session_check_name(group);
	if (prefix == NULL) {
	cmdq_error(item, "invalid session group: %s",
	group);
	goto fail;
	}
	}
	}

	/* Set -d if no client. */
	detached = args_has(args, 'd');
	if (c == NULL)
	detached = 1;
	else if (c->flags & CLIENT_CONTROL)
	is_control = 1;

	/* Is this client already attached? */
	already_attached = 0;
	if (c != NULL && c->session != NULL)
	already_attached = 1;

	/* Get the new session working directory. */
	if ((tmp = args_get(args, 'c')) != NULL)
	cwd = format_single(item, tmp, c, NULL, NULL, NULL);
	else
	cwd = xstrdup(server_client_get_cwd(c, NULL));

	/*
	* If this is a new client, check for nesting and save the termios
	* settings (part of which is used for new windows in this session).
	*
	* tcgetattr() is used rather than using tty.tio since if the client is
	* detached, tty_open won't be called. It must be done before opening
	* the terminal as that calls tcsetattr() to prepare for tmux taking
	* over.
	*/
	if (!detached &&
	!already_attached &&
	c->fd != -1 &&
	(~c->flags & CLIENT_CONTROL)) {
	if (server_client_check_nested(cmdq_get_client(item))) {
	cmdq_error(item, "sessions should be nested with care, "
	"unset $TMUX to force");
	goto fail;
	}
	if (tcgetattr(c->fd, &tio) != 0)
	fatal("tcgetattr failed");
	tiop = &tio;
	} else
	tiop = NULL;

	/* Open the terminal if necessary. */
	if (!detached && !already_attached) {
	if (server_client_open(c, &cause) != 0) {
	cmdq_error(item, "open terminal failed: %s", cause);
	free(cause);
	goto fail;
	}
	}

	/* Get default session size. */
	if (args_has(args, 'x')) {
	tmp = args_get(args, 'x');
	if (strcmp(tmp, "-") == 0) {
	if (c != NULL)
	dsx = c->tty.sx;
	else
	dsx = 80;
	} else {
	dsx = strtonum(tmp, 1, USHRT_MAX, &errstr);
	if (errstr != NULL) {
	cmdq_error(item, "width %s", errstr);
	goto fail;
	}
	}
	} else
	dsx = 80;
	if (args_has(args, 'y')) {
	tmp = args_get(args, 'y');
	if (strcmp(tmp, "-") == 0) {
	if (c != NULL)
	dsy = c->tty.sy;
	else
	dsy = 24;
	} else {
	dsy = strtonum(tmp, 1, USHRT_MAX, &errstr);
	if (errstr != NULL) {
	cmdq_error(item, "height %s", errstr);
	goto fail;
	}
	}
	} else
	dsy = 24;

	/* Find new session size. */
	if (!detached && !is_control) {
	sx = c->tty.sx;
	sy = c->tty.sy;
	if (sy > 0 && options_get_number(global_s_options, "status"))
	sy--;
	} else {
	tmp = options_get_string(global_s_options, "default-size");
	if (sscanf(tmp, "%ux%u", &sx, &sy) != 2) {
	sx = dsx;
	sy = dsy;
	} else {
	if (args_has(args, 'x'))
	sx = dsx;
	if (args_has(args, 'y'))
	sy = dsy;
	}
	}
	if (sx == 0)
	sx = 1;
	if (sy == 0)
	sy = 1;

	/* Create the new session. */
	oo = options_create(global_s_options);
	if (args_has(args, 'x') \|\| args_has(args, 'y')) {
	if (!args_has(args, 'x'))
	dsx = sx;
	if (!args_has(args, 'y'))
	dsy = sy;
	options_set_string(oo, "default-size", 0, "%ux%u", dsx, dsy);
	}
	env = environ_create();
	if (c != NULL && !args_has(args, 'E'))
	environ_update(global_s_options, c->environ, env);
	add = args_first_value(args, 'e', &value);
	while (add != NULL) {
	environ_put(env, add, 0);
	add = args_next_value(&value);
	}
	s = session_create(prefix, newname, cwd, env, oo, tiop);

	/* Spawn the initial window. */
	memset(&sc, 0, sizeof sc);
	sc.item = item;
	sc.s = s;
	sc.tc = c;

	sc.name = args_get(args, 'n');
	sc.argc = args->argc;
	sc.argv = args->argv;

	sc.idx = -1;
	sc.cwd = args_get(args, 'c');

	sc.flags = 0;

	if (spawn_window(&sc, &cause) == NULL) {
	session_destroy(s, 0, __func__);
	cmdq_error(item, "create window failed: %s", cause);
	free(cause);
	goto fail;
	}

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

	/*
	* 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 (args_has(args, 'f'))
	server_client_set_flags(c, args_get(args, 'f'));
	if (!already_attached) {
	if (~c->flags & CLIENT_CONTROL)
	proc_send(c->peer, MSG_READY, -1, NULL, 0);
	} else if (c->session != NULL)
	c->last_session = c->session;
	c->session = s;
	if (~cmdq_get_flags(item) & CMDQ_STATE_REPEAT)
	server_client_set_key_table(c, NULL);
	tty_update_client_offset(c);
	status_timer_start(c);
	notify_client("client-session-changed", c);
	session_update_activity(s, NULL);
	gettimeofday(&s->last_attached_time, NULL);
	server_redraw_client(c);
	}
	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)
	cfg_show_causes(s);

	/* Print if requested. */
	if (args_has(args, 'P')) {
	if ((template = args_get(args, 'F')) == NULL)
	template = NEW_SESSION_TEMPLATE;
	cp = format_single(item, template, c, s, s->curw, NULL);
	cmdq_print(item, "%s", cp);
	free(cp);
	}

	if (!detached)
	c->flags \|= CLIENT_ATTACHED;
	if (!args_has(args, 'd'))
	cmd_find_from_session(current, s, 0);

	cmd_find_from_session(&fs, s, 0);
	cmdq_insert_hook(s, item, &fs, "after-new-session");

	free(cwd);
	free(newname);
	free(prefix);
	return (CMD_RETURN_NORMAL);

	fail:
	free(cwd);
	free(newname);
	free(prefix);
	return (CMD_RETURN_ERROR);
	}