278 lines
7.6 KiB
C
278 lines
7.6 KiB
C
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/* $Id: cmd-new-session.c,v 1.1.1.2 2011/08/17 18:40:04 jmmv Exp $ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <pwd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <termios.h>
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#include <unistd.h>
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#include "tmux.h"
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/*
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* Create a new session and attach to the current terminal unless -d is given.
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*/
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int cmd_new_session_check(struct args *);
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int cmd_new_session_exec(struct cmd *, struct cmd_ctx *);
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const struct cmd_entry cmd_new_session_entry = {
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"new-session", "new",
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"dn:s:t:x:y:", 0, 1,
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"[-d] [-n window-name] [-s session-name] [-t target-session] "
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"[-x width] [-y height] [command]",
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CMD_STARTSERVER|CMD_CANTNEST|CMD_SENDENVIRON,
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NULL,
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cmd_new_session_check,
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cmd_new_session_exec
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};
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int
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cmd_new_session_check(struct args *args)
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{
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if (args_has(args, 't') && (args->argc != 0 || args_has(args, 'n')))
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return (-1);
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return (0);
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}
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int
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cmd_new_session_exec(struct cmd *self, struct cmd_ctx *ctx)
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{
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struct args *args = self->args;
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struct session *s, *old_s, *groupwith;
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struct window *w;
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struct window_pane *wp;
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struct environ env;
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struct termios tio, *tiop;
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struct passwd *pw;
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const char *newname, *target, *update, *cwd, *errstr;
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char *overrides, *cmd, *cause;
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int detached, idx;
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u_int sx, sy, i;
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newname = args_get(args, 's');
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if (newname != NULL) {
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if (!session_check_name(newname)) {
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ctx->error(ctx, "bad session name: %s", newname);
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return (-1);
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}
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if (session_find(newname) != NULL) {
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ctx->error(ctx, "duplicate session: %s", newname);
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return (-1);
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}
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}
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target = args_get(args, 't');
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if (target != NULL) {
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groupwith = cmd_find_session(ctx, target, 0);
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if (groupwith == NULL)
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return (-1);
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} else
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groupwith = NULL;
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/*
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* There are three cases:
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*
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* 1. If cmdclient is non-NULL, new-session has been called from the
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* command-line - cmdclient is to become a new attached, interactive
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* client. Unless -d is given, the terminal must be opened and then
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* the client sent MSG_READY.
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*
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* 2. If cmdclient is NULL, new-session has been called from an
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* existing client (such as a key binding).
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*
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* 3. Both are NULL, the command was in the configuration file. Treat
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* this as if -d was given even if it was not.
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*
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* In all cases, a new additional session needs to be created and
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* (unless -d) set as the current session for the client.
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*/
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/* Set -d if no client. */
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detached = args_has(args, 'd');
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if (ctx->cmdclient == NULL && ctx->curclient == NULL)
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detached = 1;
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/*
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* Save the termios settings, part of which is used for new windows in
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* this session.
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*
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* This is read again with tcgetattr() rather than using tty.tio as if
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* detached, tty_open won't be called. Because of this, it must be done
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* before opening the terminal as that calls tcsetattr() to prepare for
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* tmux taking over.
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*/
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if (ctx->cmdclient != NULL && ctx->cmdclient->tty.fd != -1) {
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if (tcgetattr(ctx->cmdclient->tty.fd, &tio) != 0)
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fatal("tcgetattr failed");
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tiop = &tio;
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} else
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tiop = NULL;
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/* Open the terminal if necessary. */
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if (!detached && ctx->cmdclient != NULL) {
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if (!(ctx->cmdclient->flags & CLIENT_TERMINAL)) {
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ctx->error(ctx, "not a terminal");
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return (-1);
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}
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overrides =
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options_get_string(&global_s_options, "terminal-overrides");
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if (tty_open(&ctx->cmdclient->tty, overrides, &cause) != 0) {
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ctx->error(ctx, "open terminal failed: %s", cause);
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xfree(cause);
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return (-1);
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}
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}
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/* Get the new session working directory. */
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if (ctx->cmdclient != NULL && ctx->cmdclient->cwd != NULL)
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cwd = ctx->cmdclient->cwd;
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else {
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pw = getpwuid(getuid());
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if (pw->pw_dir != NULL && *pw->pw_dir != '\0')
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cwd = pw->pw_dir;
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else
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cwd = "/";
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}
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/* Find new session size. */
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if (detached) {
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sx = 80;
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sy = 24;
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if (args_has(args, 'x')) {
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sx = strtonum(
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args_get(args, 'x'), 1, USHRT_MAX, &errstr);
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if (errstr != NULL) {
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ctx->error(ctx, "width %s", errstr);
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return (-1);
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}
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}
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if (args_has(args, 'y')) {
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sy = strtonum(
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args_get(args, 'y'), 1, USHRT_MAX, &errstr);
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if (errstr != NULL) {
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ctx->error(ctx, "height %s", errstr);
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return (-1);
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}
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}
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} else if (ctx->cmdclient != NULL) {
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sx = ctx->cmdclient->tty.sx;
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sy = ctx->cmdclient->tty.sy;
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} else {
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sx = ctx->curclient->tty.sx;
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sy = ctx->curclient->tty.sy;
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}
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if (sy > 0 && options_get_number(&global_s_options, "status"))
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sy--;
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if (sx == 0)
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sx = 1;
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if (sy == 0)
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sy = 1;
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/* Figure out the command for the new window. */
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if (target != NULL)
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cmd = NULL;
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else if (args->argc != 0)
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cmd = args->argv[0];
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else
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cmd = options_get_string(&global_s_options, "default-command");
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/* Construct the environment. */
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environ_init(&env);
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update = options_get_string(&global_s_options, "update-environment");
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if (ctx->cmdclient != NULL)
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environ_update(update, &ctx->cmdclient->environ, &env);
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/* Create the new session. */
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idx = -1 - options_get_number(&global_s_options, "base-index");
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s = session_create(newname, cmd, cwd, &env, tiop, idx, sx, sy, &cause);
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if (s == NULL) {
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ctx->error(ctx, "create session failed: %s", cause);
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xfree(cause);
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return (-1);
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}
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environ_free(&env);
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/* Set the initial window name if one given. */
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if (cmd != NULL && args_has(args, 'n')) {
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w = s->curw->window;
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xfree(w->name);
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w->name = xstrdup(args_get(args, 'n'));
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options_set_number(&w->options, "automatic-rename", 0);
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}
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/*
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* If a target session is given, this is to be part of a session group,
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* so add it to the group and synchronize.
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*/
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if (groupwith != NULL) {
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session_group_add(groupwith, s);
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session_group_synchronize_to(s);
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session_select(s, RB_ROOT(&s->windows)->idx);
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}
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/*
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* Set the client to the new session. If a command client exists, it is
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* taking this session and needs to get MSG_READY and stay around.
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*/
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if (!detached) {
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if (ctx->cmdclient != NULL) {
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server_write_client(ctx->cmdclient, MSG_READY, NULL, 0);
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old_s = ctx->cmdclient->session;
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if (old_s != NULL)
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ctx->cmdclient->last_session = old_s;
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ctx->cmdclient->session = s;
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session_update_activity(s);
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server_redraw_client(ctx->cmdclient);
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} else {
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old_s = ctx->curclient->session;
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if (old_s != NULL)
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ctx->curclient->last_session = old_s;
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ctx->curclient->session = s;
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session_update_activity(s);
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server_redraw_client(ctx->curclient);
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}
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}
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recalculate_sizes();
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server_update_socket();
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/*
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* If there are still configuration file errors to display, put the new
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* session's current window into more mode and display them now.
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*/
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if (cfg_finished && !ARRAY_EMPTY(&cfg_causes)) {
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wp = s->curw->window->active;
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window_pane_set_mode(wp, &window_copy_mode);
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window_copy_init_for_output(wp);
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for (i = 0; i < ARRAY_LENGTH(&cfg_causes); i++) {
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cause = ARRAY_ITEM(&cfg_causes, i);
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window_copy_add(wp, "%s", cause);
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xfree(cause);
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}
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ARRAY_FREE(&cfg_causes);
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}
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return (!detached); /* 1 means don't tell command client to exit */
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}
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