mirror of
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c04aa90207
Sync from OpenBSD. * obsd-master: Add halfpage commands to mode command string table (missed by accident), from Thomas Adam. Clarify some points about config files, notably that they are only read at server start. From Thomas Adam. Use a utility function for common code to show errors in config file, from Thomas Adam.
264 lines
7.3 KiB
C
264 lines
7.3 KiB
C
/* $Id$ */
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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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enum cmd_retval cmd_new_session_check(struct args *);
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enum cmd_retval 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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enum cmd_retval
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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 (CMD_RETURN_ERROR);
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return (CMD_RETURN_NORMAL);
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}
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enum cmd_retval
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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 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 *cmd, *cause;
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int detached, idx;
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u_int sx, sy;
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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 (CMD_RETURN_ERROR);
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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 (CMD_RETURN_ERROR);
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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 (CMD_RETURN_ERROR);
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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 (server_client_open(ctx->cmdclient, NULL, &cause) != 0) {
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ctx->error(ctx, "open terminal failed: %s", cause);
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free(cause);
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return (CMD_RETURN_ERROR);
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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 (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 if (ctx->curclient != NULL) {
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sx = ctx->curclient->tty.sx;
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sy = ctx->curclient->tty.sy;
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} else {
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sx = 80;
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sy = 24;
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}
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if (detached) {
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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 (CMD_RETURN_ERROR);
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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 (CMD_RETURN_ERROR);
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}
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}
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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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free(cause);
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return (CMD_RETURN_ERROR);
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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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window_set_name(w, 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_ready(ctx->cmdclient);
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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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notify_attached_session_changed(ctx->cmdclient);
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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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notify_attached_session_changed(ctx->curclient);
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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)
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show_cfg_causes(s);
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return (detached ? CMD_RETURN_NORMAL : CMD_RETURN_ATTACH);
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}
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