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/* $OpenBSD: cmd-attach-session.c,v 1.84 2020/05/16 15:45:29 nicm Exp $ */
/*
* 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 <unistd.h>
#include "tmux.h"
/*
* Attach existing session to the current terminal.
*/
static enum cmd_retval cmd_attach_session_exec(struct cmd *,
struct cmdq_item *);
const struct cmd_entry cmd_attach_session_entry = {
.name = "attach-session",
.alias = "attach",
.args = { "c:dEf:rt:x", 0, 0 },
.usage = "[-dErx] [-c working-directory] [-f flags] "
CMD_TARGET_SESSION_USAGE,
/* -t is special */
.flags = CMD_STARTSERVER,
.exec = cmd_attach_session_exec
};
enum cmd_retval
cmd_attach_session(struct cmdq_item *item, const char *tflag, int dflag,
int xflag, int rflag, const char *cflag, int Eflag, const char *fflag)
{
struct cmd_find_state *current = cmdq_get_current(item);
struct cmd_find_state target;
enum cmd_find_type type;
int flags;
struct client *c = cmdq_get_client(item), *c_loop;
struct session *s;
struct winlink *wl;
struct window_pane *wp;
char *cause;
enum msgtype msgtype;
if (RB_EMPTY(&sessions)) {
cmdq_error(item, "no sessions");
return (CMD_RETURN_ERROR);
}
if (c == NULL)
return (CMD_RETURN_NORMAL);
if (server_client_check_nested(c)) {
cmdq_error(item, "sessions should be nested with care, "
"unset $TMUX to force");
return (CMD_RETURN_ERROR);
}
if (tflag != NULL && tflag[strcspn(tflag, ":.")] != '\0') {
type = CMD_FIND_PANE;
flags = 0;
} else {
type = CMD_FIND_SESSION;
flags = CMD_FIND_PREFER_UNATTACHED;
}
if (cmd_find_target(&target, item, tflag, type, flags) != 0)
return (CMD_RETURN_ERROR);
s = target.s;
wl = target.wl;
wp = target.wp;
if (wl != NULL) {
if (wp != NULL)
window_set_active_pane(wp->window, wp, 1);
session_set_current(s, wl);
if (wp != NULL)
cmd_find_from_winlink_pane(current, wl, wp, 0);
else
cmd_find_from_winlink(current, wl, 0);
}
if (cflag != NULL) {
free((void *)s->cwd);
s->cwd = format_single(item, cflag, c, s, wl, wp);
}
if (fflag)
server_client_set_flags(c, fflag);
if (rflag)
c->flags |= (CLIENT_READONLY|CLIENT_IGNORESIZE);
c->last_session = c->session;
if (c->session != NULL) {
if (dflag || xflag) {
if (xflag)
msgtype = MSG_DETACHKILL;
else
msgtype = MSG_DETACH;
TAILQ_FOREACH(c_loop, &clients, entry) {
if (c_loop->session != s || c == c_loop)
continue;
server_client_detach(c_loop, msgtype);
}
}
if (!Eflag)
environ_update(s->options, c->environ, s->environ);
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);
s->curw->flags &= ~WINLINK_ALERTFLAGS;
s->curw->window->latest = c;
} else {
if (server_client_open(c, &cause) != 0) {
cmdq_error(item, "open terminal failed: %s", cause);
free(cause);
return (CMD_RETURN_ERROR);
}
if (dflag || xflag) {
if (xflag)
msgtype = MSG_DETACHKILL;
else
msgtype = MSG_DETACH;
TAILQ_FOREACH(c_loop, &clients, entry) {
if (c_loop->session != s || c == c_loop)
continue;
server_client_detach(c_loop, msgtype);
}
}
if (!Eflag)
environ_update(s->options, c->environ, s->environ);
c->session = s;
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);
s->curw->flags &= ~WINLINK_ALERTFLAGS;
s->curw->window->latest = c;
if (~c->flags & CLIENT_CONTROL)
proc_send(c->peer, MSG_READY, -1, NULL, 0);
notify_client("client-attached", c);
c->flags |= CLIENT_ATTACHED;
}
recalculate_sizes();
alerts_check_session(s);
server_update_socket();
return (CMD_RETURN_NORMAL);
}
static enum cmd_retval
cmd_attach_session_exec(struct cmd *self, struct cmdq_item *item)
{
struct args *args = cmd_get_args(self);
return (cmd_attach_session(item, args_get(args, 't'),
args_has(args, 'd'), args_has(args, 'x'), args_has(args, 'r'),
args_get(args, 'c'), args_has(args, 'E'), args_get(args, 'f')));
}
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