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|
/* $OpenBSD$ */
/*
* 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 cmd_q *);
const struct cmd_entry cmd_new_session_entry = {
.name = "new-session",
.alias = "new",
.args = { "Ac:dDEF:n:Ps:t:x:y:", 0, -1 },
.usage = "[-AdDEP] [-c start-directory] [-F format] [-n window-name] "
"[-s session-name] " CMD_TARGET_SESSION_USAGE " [-x width] "
"[-y height] [command]",
.tflag = CMD_SESSION_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,
.tflag = CMD_SESSION,
.flags = 0,
.exec = cmd_new_session_exec
};
static enum cmd_retval
cmd_new_session_exec(struct cmd *self, struct cmd_q *cmdq)
{
struct args *args = self->args;
struct client *c = cmdq->client;
struct session *s, *as;
struct session *groupwith = cmdq->state.tflag.s;
struct window *w;
struct environ *env;
struct termios tio, *tiop;
const char *newname, *target, *update, *errstr, *template;
const char *path, *cwd, *to_free = NULL;
char **argv, *cmd, *cause, *cp;
int detached, already_attached, idx, argc;
u_int sx, sy;
struct format_tree *ft;
struct environ_entry *envent;
struct cmd_find_state fs;
if (self->entry == &cmd_has_session_entry) {
/*
* cmd_prepare() will fail if the session cannot be found,
* hence always return success here.
*/
return (CMD_RETURN_NORMAL);
}
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 ((as = session_find(newname)) != NULL) {
if (args_has(args, 'A')) {
/*
* This cmdq is now destined for
* attach-session. Because attach-session
* will have already been prepared, copy this
* session into its tflag so it can be used.
*/
cmd_find_from_session(&cmdq->state.tflag, as);
return (cmd_attach_session(cmdq,
args_has(args, 'D'), 0, NULL,
args_has(args, 'E')));
}
cmdq_error(cmdq, "duplicate session: %s", newname);
return (CMD_RETURN_ERROR);
}
}
if ((target = args_get(args, 't')) != NULL) {
if (groupwith == NULL) {
cmdq_error(cmdq, "no such session: %s", target);
goto 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(cmdq, 0);
format_defaults(ft, c, NULL, NULL, NULL);
to_free = cwd = format_expand(ft, args_get(args, 'c'));
format_free(ft);
} else if (c != NULL && c->session == NULL && c->cwd != NULL)
cwd = c->cwd;
else
cwd = ".";
/*
* 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->tty.fd != -1) {
if (server_client_check_nested(cmdq->client)) {
cmdq_error(cmdq, "sessions should be nested with care, "
"unset $TMUX to force");
return (CMD_RETURN_ERROR);
}
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. */
argc = -1;
argv = NULL;
if (!args_has(args, 't') && args->argc != 0) {
argc = args->argc;
argv = args->argv;
} else if (groupwith == NULL) {
cmd = options_get_string(global_s_options, "default-command");
if (cmd != NULL && *cmd != '\0') {
argc = 1;
argv = &cmd;
} else {
argc = 0;
argv = NULL;
}
}
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. */
env = environ_create();
if (c != NULL && !args_has(args, 'E')) {
update = options_get_string(global_s_options,
"update-environment");
environ_update(update, c->environ, env);
}
/* Create the new session. */
idx = -1 - options_get_number(global_s_options, "base-index");
s = session_create(newname, argc, argv,
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