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/* $OpenBSD: cmd-attach-session.c,v 1.36 2015/06/07 21:39:39 nicm Exp $ */
/*
* 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 <unistd.h>
#include "tmux.h"
/*
* Attach existing session to the current terminal.
*/
enum cmd_retval cmd_attach_session_exec(struct cmd *, struct cmd_q *);
const struct cmd_entry cmd_attach_session_entry = {
"attach-session", "attach",
"c:dErt:", 0, 0,
"[-dEr] [-c working-directory] " CMD_TARGET_SESSION_USAGE,
CMD_STARTSERVER,
cmd_attach_session_exec
};
enum cmd_retval
cmd_attach_session(struct cmd_q *cmdq, const char *tflag, int dflag, int rflag,
const char *cflag, int Eflag)
{
struct session *s;
struct client *c = cmdq->client, *c_loop;
struct winlink *wl = NULL;
struct window *w = NULL;
struct window_pane *wp = NULL;
const char *update;
char *cause;
int fd;
struct format_tree *ft;
char *cp;
if (RB_EMPTY(&sessions)) {
cmdq_error(cmdq, "no sessions");
return (CMD_RETURN_ERROR);
}
if (tflag == NULL) {
if ((s = cmd_find_session(cmdq, tflag, 1)) == NULL)
return (CMD_RETURN_ERROR);
} else if (tflag[strcspn(tflag, ":.")] != '\0') {
if ((wl = cmd_find_pane(cmdq, tflag, &s, &wp)) == NULL)
return (CMD_RETURN_ERROR);
} else {
if ((s = cmd_find_session(cmdq, tflag, 1)) == NULL)
return (CMD_RETURN_ERROR);
w = window_find_by_id_str(tflag);
if (w == NULL) {
wp = window_pane_find_by_id_str(tflag);
if (wp != NULL)
w = wp->window;
}
if (w != NULL)
wl = winlink_find_by_window(&s->windows, w);
}
if (c == NULL)
return (CMD_RETURN_NORMAL);
if (server_client_check_nested(c)) {
cmdq_error(cmdq, "sessions should be nested with care, "
"unset $TMUX to force");
return (CMD_RETURN_ERROR);
}
if (wl != NULL) {
if (wp != NULL)
window_set_active_pane(wp->window, wp);
session_set_current(s, wl);
}
if (c->session != NULL) {
if (dflag) {
/*
* Can't use server_write_session in case attaching to
* the same session as currently attached to.
*/
TAILQ_FOREACH(c_loop, &clients, entry) {
if (c_loop->session != s || c == c)
continue;
server_write_client(c, MSG_DETACH,
c_loop->session->name,
strlen(c_loop->session->name) + 1);
}
}
if (cflag != NULL) {
ft = format_create();
format_defaults(ft, cmd_find_client(cmdq, NULL, 1), s,
NULL, NULL);
cp = format_expand(ft, cflag);
format_free(ft);
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);
}
close(s->cwd);
s->cwd = fd;
}
c->session = s;
notify_attached_session_changed(c);
session_update_activity(s);
server_redraw_client(c);
s->curw->flags &= ~WINLINK_ALERTFLAGS;
} else {
if (server_client_open(c, &cause) != 0) {
cmdq_error(cmdq, "open terminal failed: %s", cause);
free(cause);
return (CMD_RETURN_ERROR);
}
if (cflag != NULL) {
ft = format_create();
format_defaults(ft, cmd_find_client(cmdq, NULL, 1), s,
NULL, NULL);
cp = format_expand(ft, cflag);
format_free(ft);
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);
}
close(s->cwd);
s->cwd = fd;
}
if (rflag)
c->flags |= CLIENT_READONLY;
if (dflag) {
server_write_session(s, MSG_DETACH, s->name,
strlen(s->name) + 1);
}
if (!Eflag) {
update = options_get_string(&s->options,
"update-environment");
environ_update(update, &c->environ, &s->environ);
}
c->session = s;
notify_attached_session_changed(c);
session_update_activity(s);
server_redraw_client(c);
s->curw->flags &= ~WINLINK_ALERTFLAGS;
server_write_ready(c);
cmdq->client_exit = 0;
}
recalculate_sizes();
server_update_socket();
return (CMD_RETURN_NORMAL);
}
enum cmd_retval
cmd_attach_session_exec(struct cmd *self, struct cmd_q *cmdq)
{
struct args *args = self->args;
return (cmd_attach_session(cmdq, args_get(args, 't'),
args_has(args, 'd'), args_has(args, 'r'), args_get(args, 'c'),
args_has(args, 'E')));
}
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