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/* $Id: cmd-new-session.c,v 1.78 2010/07/02 02:49:19 tcunha 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 <pwd.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.
*/
int cmd_new_session_parse(struct cmd *, int, char **, char **);
int cmd_new_session_exec(struct cmd *, struct cmd_ctx *);
void cmd_new_session_free(struct cmd *);
void cmd_new_session_init(struct cmd *, int);
size_t cmd_new_session_print(struct cmd *, char *, size_t);
struct cmd_new_session_data {
char *target;
char *newname;
char *winname;
char *cmd;
int flag_detached;
};
const struct cmd_entry cmd_new_session_entry = {
"new-session", "new",
"[-d] [-n window-name] [-s session-name] [-t target-session] [command]",
CMD_STARTSERVER|CMD_CANTNEST|CMD_SENDENVIRON, "",
cmd_new_session_init,
cmd_new_session_parse,
cmd_new_session_exec,
cmd_new_session_free,
cmd_new_session_print
};
/* ARGSUSED */
void
cmd_new_session_init(struct cmd *self, unused int arg)
{
struct cmd_new_session_data *data;
self->data = data = xmalloc(sizeof *data);
data->flag_detached = 0;
data->target = NULL;
data->newname = NULL;
data->winname = NULL;
data->cmd = NULL;
}
int
cmd_new_session_parse(struct cmd *self, int argc, char **argv, char **cause)
{
struct cmd_new_session_data *data;
int opt;
self->entry->init(self, KEYC_NONE);
data = self->data;
while ((opt = getopt(argc, argv, "ds:t:n:")) != -1) {
switch (opt) {
case 'd':
data->flag_detached = 1;
break;
case 's':
if (data->newname == NULL)
data->newname = xstrdup(optarg);
break;
case 't':
if (data->target == NULL)
data->target = xstrdup(optarg);
break;
case 'n':
if (data->winname == NULL)
data->winname = xstrdup(optarg);
break;
default:
goto usage;
}
}
argc -= optind;
argv += optind;
if (argc != 0 && argc != 1)
goto usage;
if (data->target != NULL && (argc == 1 || data->winname != NULL))
goto usage;
if (argc == 1)
data->cmd = xstrdup(argv[0]);
return (0);
usage:
xasprintf(cause, "usage: %s %s", self->entry->name, self->entry->usage);
self->entry->free(self);
return (-1);
}
int
cmd_new_session_exec(struct cmd *self, struct cmd_ctx *ctx)
{
struct cmd_new_session_data *data = self->data;
struct session *s, *groupwith;
struct window *w;
struct window_pane *wp;
struct environ env;
struct termios tio, *tiop;
struct passwd *pw;
const char *update, *cwd;
char *overrides, *cmd, *cause;
int detached, idx;
u_int sx, sy, i;
if (data->newname != NULL && session_find(data->newname) != NULL) {
ctx->error(ctx, "duplicate session: %s", data->newname);
return (-1);
}
groupwith = NULL;
if (data->target != NULL &&
(groupwith = cmd_find_session(ctx, data->target)) == NULL)
return (-1);
/*
* There are three cases:
*
* 1. If cmdclient is non-NULL, new-session has been called from the
* command-line - cmdclient is to become a new attached, interactive
* client. Unless -d is given, the terminal must be opened and then
* the client sent MSG_READY.
*
* 2. If cmdclient is NULL, new-session has been called from an
* existing client (such as a key binding).
*
* 3. Both are NULL, the command was in the configuration file. Treat
* this as if -d was given even if it was not.
*
* In all cases, a new additional session needs to be created and
* (unless -d) set as the current session for the client.
*/
/* Set -d if no client. */
detached = data->flag_detached;
if (ctx->cmdclient == NULL && ctx->curclient == NULL)
detached = 1;
/*
* 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 (ctx->cmdclient != NULL && ctx->cmdclient->tty.fd != -1) {
if (tcgetattr(ctx->cmdclient->tty.fd, &tio) != 0)
fatal("tcgetattr failed");
tiop = &tio;
} else
tiop = NULL;
/* Open the terminal if necessary. */
if (!detached && ctx->cmdclient != NULL) {
if (!(ctx->cmdclient->flags & CLIENT_TERMINAL)) {
ctx->error(ctx, "not a terminal");
return (-1);
}
overrides =
options_get_string(&global_s_options, "terminal-overrides");
if (tty_open(&ctx->cmdclient->tty, overrides, &cause) != 0) {
ctx->error(ctx, "open terminal failed: %s", cause);
xfree(cause);
return (-1);
}
}
/* Get the new session working directory. */
if (ctx->cmdclient != NULL && ctx->cmdclient->cwd != NULL)
cwd = ctx->cmdclient->cwd;
else {
pw = getpwuid(getuid());
if (pw->pw_dir != NULL && *pw->pw_dir != '\0')
cwd = pw->pw_dir;
else
cwd = "/";
}
/* Find new session size. */
if (detached) {
sx = 80;
sy = 24;
} else if (ctx->cmdclient != NULL) {
sx = ctx->cmdclient->tty.sx;
sy = ctx->cmdclient->tty.sy;
} else {
sx = ctx->curclient->tty.sx;
sy = ctx->curclient->tty.sy;
}
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 (data->target != NULL)
cmd = NULL;
else if (data->cmd != NULL)
cmd = data->cmd;
else
cmd = options_get_string(&global_s_options, "default-command");
/* Construct the environment. */
environ_init(&env);
update = options_get_string(&global_s_options, "update-environment");
if (ctx->cmdclient != NULL)
environ_update(update, &ctx->cmdclient->environ, &env);
/* Create the new session. */
idx = -1 - options_get_number(&global_s_options, "base-index");
s = session_create(
data->newname, cmd, cwd, &env, tiop, idx, sx, sy, &cause);
if (s == NULL) {
ctx->error(ctx, "create session failed: %s", cause);
xfree(cause);
return (-1);
}
environ_free(&env);
/* Set the initial window name if one given. */
if (cmd != NULL && data->winname != NULL) {
w = s->curw->window;
xfree(w->name);
w->name = xstrdup(data->winname);
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 (ctx->cmdclient != NULL) {
server_write_client(ctx->cmdclient, MSG_READY, NULL, 0);
ctx->cmdclient->session = s;
server_redraw_client(ctx->cmdclient);
} else {
ctx->curclient->session = s;
server_redraw_client(ctx->curclient);
}
}
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 && !ARRAY_EMPTY(&cfg_causes)) {
wp = s->curw->window->active;
window_pane_set_mode(wp, &window_copy_mode);
window_copy_init_for_output(wp);
for (i = 0; i < ARRAY_LENGTH(&cfg_causes); i++) {
cause = ARRAY_ITEM(&cfg_causes, i);
window_copy_add(wp, "%s", cause);
xfree(cause);
}
ARRAY_FREE(&cfg_causes);
}
return (!detached); /* 1 means don't tell command client to exit */
}
void
cmd_new_session_free(struct cmd *self)
{
struct cmd_new_session_data *data = self->data;
if (data->newname != NULL)
xfree(data->newname);
if (data->winname != NULL)
xfree(data->winname);
if (data->cmd != NULL)
xfree(data->cmd);
xfree(data);
}
size_t
cmd_new_session_print(struct cmd *self, char *buf, size_t len)
{
struct cmd_new_session_data *data = self->data;
size_t off = 0;
off += xsnprintf(buf, len, "%s", self->entry->name);
if (data == NULL)
return (off);
if (off < len && data->flag_detached)
off += xsnprintf(buf + off, len - off, " -d");
if (off < len && data->winname != NULL)
off += cmd_prarg(buf + off, len - off, " -n ", data->winname);
if (off < len && data->newname != NULL)
off += cmd_prarg(buf + off, len - off, " -s ", data->newname);
if (off < len && data->target != NULL)
off += cmd_prarg(buf + off, len - off, " -t ", data->target);
if (off < len && data->cmd != NULL)
off += cmd_prarg(buf + off, len - off, " ", data->cmd);
return (off);
}