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 <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.
  */

 enum cmd_retval	 cmd_new_session_exec(struct cmd *, struct cmd_q *);

 const struct cmd_entry cmd_new_session_entry = {
 	"new-session", "new",
 	"Ac:dDF:n:Ps:t:x:y:", 0, 1,
 	"[-AdDP] [-c start-directory] [-F format] [-n window-name] "
 	"[-s session-name] " CMD_TARGET_SESSION_USAGE " [-x width] [-y height] "
 	"[command]",
 	CMD_STARTSERVER|CMD_CANTNEST,
 	NULL,
 	cmd_new_session_exec
 };

 enum cmd_retval
 cmd_new_session_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct client		*c = cmdq->client, *c0;
 	struct session		*s, *groupwith;
 	struct window		*w;
 	struct environ		 env;
 	struct termios		 tio, *tiop;
 	const char		*newname, *target, *update, *errstr, *template;
 	const char		*path;
 	char			*cmd, *cause, *cp;
 	int			 detached, already_attached, idx, cwd, fd = -1;
 	u_int			 sx, sy;
 	struct format_tree	*ft;
 	struct environ_entry	*envent;

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

 	newname = args_get(args, 's');
 	if (newname != NULL) {
 		if (!session_check_name(newname)) {
 			cmdq_error(cmdq, "bad session name: %s", newname);
 			return (CMD_RETURN_ERROR);
 		}
 		if (session_find(newname) != NULL) {
 			if (args_has(args, 'A')) {
 				return (cmd_attach_session(cmdq, newname,
 				    args_has(args, 'D'), 0, NULL));
 			}
 			cmdq_error(cmdq, "duplicate session: %s", newname);
 			return (CMD_RETURN_ERROR);
 		}
 	}

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

 	/* Set -d if no client. */
 	detached = args_has(args, 'd');
 	if (c == NULL)
 		detached = 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 (args_has(args, 'c')) {
 		ft = format_create();
 		if ((c0 = cmd_find_client(cmdq, NULL, 1)) != NULL)
 			format_client(ft, c0);
 		cp = format_expand(ft, args_get(args, 'c'));
 		format_free(ft);

 		if (cp != NULL && *cp != '\0') {
 			fd = open(cp, O_RDONLY|O_DIRECTORY);
 			free(cp);
 			if (fd == -1) {
 				cmdq_error(cmdq, "bad working directory: %s",
 				    strerror(errno));
 				return (CMD_RETURN_ERROR);
 			}
 		} else if (cp != NULL)
 			free(cp);
 		cwd = fd;
 	} else if (c != NULL && c->session == NULL)
 		cwd = c->cwd;
 	else if ((c0 = cmd_current_client(cmdq)) != NULL)
 		cwd = c0->session->cwd;
 	else {
 		fd = open(".", O_RDONLY);
 		cwd = fd;
 	}

 	/*
 	 * 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 (!detached && !already_attached && c->tty.fd != -1) {
 		if (tcgetattr(c->tty.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(cmdq, "open terminal failed: %s", cause);
 			free(cause);
 			goto error;
 		}
 	}

 	/* Find new session size. */
 	if (c != NULL) {
 		sx = c->tty.sx;
 		sy = c->tty.sy;
 	} else {
 		sx = 80;
 		sy = 24;
 	}
 	if (detached && args_has(args, 'x')) {
 		sx = strtonum(args_get(args, 'x'), 1, USHRT_MAX, &errstr);
 		if (errstr != NULL) {
 			cmdq_error(cmdq, "width %s", errstr);
 			goto error;
 		}
 	}
 	if (detached && args_has(args, 'y')) {
 		sy = strtonum(args_get(args, 'y'), 1, USHRT_MAX, &errstr);
 		if (errstr != NULL) {
 			cmdq_error(cmdq, "height %s", errstr);
 			goto error;
 		}
 	}
 	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");

 	path = NULL;
 	if (c != NULL && c->session == NULL)
 		envent = environ_find(&c->environ, "PATH");
 	else
 		envent = environ_find(&global_environ, "PATH");
 	if (envent != NULL)
 		path = envent->value;

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

 	/* Create the new session. */
 	idx = -1 - options_get_number(&global_s_options, "base-index");
 	s = session_create(newname, cmd, path, cwd, &env, tiop, idx, sx, sy,
 	    &cause);
 	if (s == NULL) {
 		cmdq_error(cmdq, "create session failed: %s", cause);
 		free(cause);
 		goto error;
 	}
 	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 (!already_attached)
 			server_write_ready(c);
 		else if (c->session != NULL)
 			c->last_session = c->session;
 		c->session = s;
 		notify_attached_session_changed(c);
 		session_update_activity(s);
 		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;

 		ft = format_create();
 		if ((c0 = cmd_find_client(cmdq, NULL, 1)) != NULL)
 			format_client(ft, c0);
 		format_session(ft, s);

 		cp = format_expand(ft, template);
 		cmdq_print(cmdq, "%s", cp);
 		free(cp);

 		format_free(ft);
 	}

 	if (!detached)
 		cmdq->client_exit = 0;

 	if (fd != -1)
 		close(fd);
 	return (CMD_RETURN_NORMAL);

 error:
 	if (fd != -1)
 		close(fd);
 	return (CMD_RETURN_ERROR);
 }
	/* $OpenBSD$ */

	/*
	* 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 <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.
	*/

	enum cmd_retval cmd_new_session_exec(struct cmd , struct cmd_q );

	const struct cmd_entry cmd_new_session_entry = {
	"new-session", "new",
	"Ac:dDF:n:Ps:t:x:y:", 0, 1,
	"[-AdDP] [-c start-directory] [-F format] [-n window-name] "
	"[-s session-name] " CMD_TARGET_SESSION_USAGE " [-x width] [-y height] "
	"[command]",
	CMD_STARTSERVER\|CMD_CANTNEST,
	NULL,
	cmd_new_session_exec
	};

	enum cmd_retval
	cmd_new_session_exec(struct cmd self, struct cmd_q cmdq)
	{
	struct args *args = self->args;
	struct client c = cmdq->client, c0;
	struct session s, groupwith;
	struct window *w;
	struct environ env;
	struct termios tio, *tiop;
	const char newname, target, update, errstr, *template;
	const char *path;
	char cmd, cause, *cp;
	int detached, already_attached, idx, cwd, fd = -1;
	u_int sx, sy;
	struct format_tree *ft;
	struct environ_entry *envent;

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

	newname = args_get(args, 's');
	if (newname != NULL) {
	if (!session_check_name(newname)) {
	cmdq_error(cmdq, "bad session name: %s", newname);
	return (CMD_RETURN_ERROR);
	}
	if (session_find(newname) != NULL) {
	if (args_has(args, 'A')) {
	return (cmd_attach_session(cmdq, newname,
	args_has(args, 'D'), 0, NULL));
	}
	cmdq_error(cmdq, "duplicate session: %s", newname);
	return (CMD_RETURN_ERROR);
	}
	}

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

	/* Set -d if no client. */
	detached = args_has(args, 'd');
	if (c == NULL)
	detached = 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 (args_has(args, 'c')) {
	ft = format_create();
	if ((c0 = cmd_find_client(cmdq, NULL, 1)) != NULL)
	format_client(ft, c0);
	cp = format_expand(ft, args_get(args, 'c'));
	format_free(ft);

	if (cp != NULL && *cp != '\0') {
	fd = open(cp, O_RDONLY\|O_DIRECTORY);
	free(cp);
	if (fd == -1) {
	cmdq_error(cmdq, "bad working directory: %s",
	strerror(errno));
	return (CMD_RETURN_ERROR);
	}
	} else if (cp != NULL)
	free(cp);
	cwd = fd;
	} else if (c != NULL && c->session == NULL)
	cwd = c->cwd;
	else if ((c0 = cmd_current_client(cmdq)) != NULL)
	cwd = c0->session->cwd;
	else {
	fd = open(".", O_RDONLY);
	cwd = fd;
	}

	/*
	* 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 (!detached && !already_attached && c->tty.fd != -1) {
	if (tcgetattr(c->tty.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(cmdq, "open terminal failed: %s", cause);
	free(cause);
	goto error;
	}
	}

	/* Find new session size. */
	if (c != NULL) {
	sx = c->tty.sx;
	sy = c->tty.sy;
	} else {
	sx = 80;
	sy = 24;
	}
	if (detached && args_has(args, 'x')) {
	sx = strtonum(args_get(args, 'x'), 1, USHRT_MAX, &errstr);
	if (errstr != NULL) {
	cmdq_error(cmdq, "width %s", errstr);
	goto error;
	}
	}
	if (detached && args_has(args, 'y')) {
	sy = strtonum(args_get(args, 'y'), 1, USHRT_MAX, &errstr);
	if (errstr != NULL) {
	cmdq_error(cmdq, "height %s", errstr);
	goto error;
	}
	}
	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");

	path = NULL;
	if (c != NULL && c->session == NULL)
	envent = environ_find(&c->environ, "PATH");
	else
	envent = environ_find(&global_environ, "PATH");
	if (envent != NULL)
	path = envent->value;

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

	/* Create the new session. */
	idx = -1 - options_get_number(&global_s_options, "base-index");
	s = session_create(newname, cmd, path, cwd, &env, tiop, idx, sx, sy,
	&cause);
	if (s == NULL) {
	cmdq_error(cmdq, "create session failed: %s", cause);
	free(cause);
	goto error;
	}
	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 (!already_attached)
	server_write_ready(c);
	else if (c->session != NULL)
	c->last_session = c->session;
	c->session = s;
	notify_attached_session_changed(c);
	session_update_activity(s);
	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;

	ft = format_create();
	if ((c0 = cmd_find_client(cmdq, NULL, 1)) != NULL)
	format_client(ft, c0);
	format_session(ft, s);

	cp = format_expand(ft, template);
	cmdq_print(cmdq, "%s", cp);
	free(cp);

	format_free(ft);
	}

	if (!detached)
	cmdq->client_exit = 0;

	if (fd != -1)
	close(fd);
	return (CMD_RETURN_NORMAL);

	error:
	if (fd != -1)
	close(fd);
	return (CMD_RETURN_ERROR);
	}