Annotation of src/usr.bin/tmux/cmd-new-session.c, Revision 1.81
1.81 ! nicm 1: /* $OpenBSD: cmd-new-session.c,v 1.80 2015/12/12 18:32:24 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20:
1.54 nicm 21: #include <errno.h>
22: #include <fcntl.h>
1.35 nicm 23: #include <stdlib.h>
1.11 nicm 24: #include <string.h>
25: #include <termios.h>
1.30 nicm 26: #include <unistd.h>
1.11 nicm 27:
1.1 nicm 28: #include "tmux.h"
29:
30: /*
31: * Create a new session and attach to the current terminal unless -d is given.
32: */
1.63 nicm 33:
34: #define NEW_SESSION_TEMPLATE "#{session_name}:"
1.1 nicm 35:
1.48 nicm 36: enum cmd_retval cmd_new_session_exec(struct cmd *, struct cmd_q *);
1.1 nicm 37:
38: const struct cmd_entry cmd_new_session_entry = {
39: "new-session", "new",
1.68 nicm 40: "Ac:dDEF:n:Ps:t:x:y:", 0, -1,
41: "[-AdDEP] [-c start-directory] [-F format] [-n window-name] "
1.60 nicm 42: "[-s session-name] " CMD_TARGET_SESSION_USAGE " [-x width] "
43: "[-y height] [command]",
1.81 ! nicm 44: CMD_STARTSERVER|CMD_CANFAIL|CMD_SESSION_T,
1.34 nicm 45: cmd_new_session_exec
1.1 nicm 46: };
47:
1.62 nicm 48: const struct cmd_entry cmd_has_session_entry = {
49: "has-session", "has",
50: "t:", 0, 0,
51: CMD_TARGET_SESSION_USAGE,
1.81 ! nicm 52: CMD_SESSION_T,
1.62 nicm 53: cmd_new_session_exec
54: };
55:
1.45 nicm 56: enum cmd_retval
1.48 nicm 57: cmd_new_session_exec(struct cmd *self, struct cmd_q *cmdq)
1.1 nicm 58: {
1.50 nicm 59: struct args *args = self->args;
1.81 ! nicm 60: struct client *c = cmdq->client;
! 61: struct session *s, *attach_sess;
! 62: struct session *groupwith = cmdq->state.tflag.s;
1.50 nicm 63: struct window *w;
1.75 nicm 64: struct environ *env;
1.50 nicm 65: struct termios tio, *tiop;
1.54 nicm 66: const char *newname, *target, *update, *errstr, *template;
1.76 nicm 67: const char *path, *cwd, *to_free;
1.60 nicm 68: char **argv, *cmd, *cause, *cp;
1.76 nicm 69: int detached, already_attached, idx, argc;
1.50 nicm 70: u_int sx, sy;
71: struct format_tree *ft;
1.59 nicm 72: struct environ_entry *envent;
1.62 nicm 73:
74: if (self->entry == &cmd_has_session_entry) {
1.81 ! nicm 75: /*
! 76: * cmd_prepare() will fail if the session cannot be found,
! 77: * hence always return success here.
! 78: */
1.62 nicm 79: return (CMD_RETURN_NORMAL);
80: }
1.51 nicm 81:
82: if (args_has(args, 't') && (args->argc != 0 || args_has(args, 'n'))) {
83: cmdq_error(cmdq, "command or window name given with target");
84: return (CMD_RETURN_ERROR);
85: }
1.34 nicm 86:
87: newname = args_get(args, 's');
1.38 nicm 88: if (newname != NULL) {
89: if (!session_check_name(newname)) {
1.48 nicm 90: cmdq_error(cmdq, "bad session name: %s", newname);
1.45 nicm 91: return (CMD_RETURN_ERROR);
1.38 nicm 92: }
1.81 ! nicm 93: if ((attach_sess = session_find(newname)) != NULL) {
1.49 nicm 94: if (args_has(args, 'A')) {
1.81 ! nicm 95: /*
! 96: * This cmdq is now destined for
! 97: * attach-session. Because attach-session
! 98: * will have already been prepared, copy this
! 99: * session into its tflag so it can be used.
! 100: */
! 101: cmdq->state.tflag.s = attach_sess;
! 102: return (cmd_attach_session(cmdq,
1.68 nicm 103: args_has(args, 'D'), 0, NULL,
104: args_has(args, 'E')));
1.49 nicm 105: }
1.48 nicm 106: cmdq_error(cmdq, "duplicate session: %s", newname);
1.45 nicm 107: return (CMD_RETURN_ERROR);
1.38 nicm 108: }
1.4 nicm 109: }
1.1 nicm 110:
1.81 ! nicm 111: if ((target = args_get(args, 't')) == NULL)
1.34 nicm 112: groupwith = NULL;
1.21 nicm 113:
1.6 nicm 114: /* Set -d if no client. */
1.34 nicm 115: detached = args_has(args, 'd');
1.48 nicm 116: if (c == NULL)
1.6 nicm 117: detached = 1;
118:
1.48 nicm 119: /* Is this client already attached? */
120: already_attached = 0;
121: if (c != NULL && c->session != NULL)
122: already_attached = 1;
123:
1.54 nicm 124: /* Get the new session working directory. */
1.76 nicm 125: to_free = NULL;
1.54 nicm 126: if (args_has(args, 'c')) {
1.79 nicm 127: ft = format_create(cmdq, 0);
1.81 ! nicm 128: format_defaults(ft, c, NULL, NULL, NULL);
1.76 nicm 129: to_free = cwd = format_expand(ft, args_get(args, 'c'));
1.54 nicm 130: format_free(ft);
1.55 nicm 131: } else if (c != NULL && c->session == NULL)
1.54 nicm 132: cwd = c->cwd;
1.76 nicm 133: else
134: cwd = ".";
1.54 nicm 135:
1.15 nicm 136: /*
1.67 nicm 137: * If this is a new client, check for nesting and save the termios
138: * settings (part of which is used for new windows in this session).
1.15 nicm 139: *
1.67 nicm 140: * tcgetattr() is used rather than using tty.tio since if the client is
141: * detached, tty_open won't be called. It must be done before opening
142: * the terminal as that calls tcsetattr() to prepare for tmux taking
143: * over.
1.15 nicm 144: */
1.48 nicm 145: if (!detached && !already_attached && c->tty.fd != -1) {
1.67 nicm 146: if (server_client_check_nested(cmdq->client)) {
147: cmdq_error(cmdq, "sessions should be nested with care, "
148: "unset $TMUX to force");
149: return (CMD_RETURN_ERROR);
150: }
1.48 nicm 151: if (tcgetattr(c->tty.fd, &tio) != 0)
1.15 nicm 152: fatal("tcgetattr failed");
1.19 nicm 153: tiop = &tio;
1.15 nicm 154: } else
1.19 nicm 155: tiop = NULL;
1.15 nicm 156:
1.4 nicm 157: /* Open the terminal if necessary. */
1.48 nicm 158: if (!detached && !already_attached) {
1.57 nicm 159: if (server_client_open(c, &cause) != 0) {
1.48 nicm 160: cmdq_error(cmdq, "open terminal failed: %s", cause);
1.44 nicm 161: free(cause);
1.54 nicm 162: goto error;
1.1 nicm 163: }
164: }
165:
1.16 nicm 166: /* Find new session size. */
1.48 nicm 167: if (c != NULL) {
168: sx = c->tty.sx;
169: sy = c->tty.sy;
1.39 nicm 170: } else {
1.4 nicm 171: sx = 80;
1.18 nicm 172: sy = 24;
1.39 nicm 173: }
1.48 nicm 174: if (detached && args_has(args, 'x')) {
175: sx = strtonum(args_get(args, 'x'), 1, USHRT_MAX, &errstr);
176: if (errstr != NULL) {
177: cmdq_error(cmdq, "width %s", errstr);
1.54 nicm 178: goto error;
1.35 nicm 179: }
1.48 nicm 180: }
181: if (detached && args_has(args, 'y')) {
182: sy = strtonum(args_get(args, 'y'), 1, USHRT_MAX, &errstr);
183: if (errstr != NULL) {
184: cmdq_error(cmdq, "height %s", errstr);
1.54 nicm 185: goto error;
1.35 nicm 186: }
1.1 nicm 187: }
1.74 nicm 188: if (sy > 0 && options_get_number(global_s_options, "status"))
1.4 nicm 189: sy--;
190: if (sx == 0)
191: sx = 1;
192: if (sy == 0)
193: sy = 1;
1.16 nicm 194:
195: /* Figure out the command for the new window. */
1.60 nicm 196: argc = -1;
197: argv = NULL;
1.81 ! nicm 198: if (!args_has(args, 't') && args->argc != 0) {
1.60 nicm 199: argc = args->argc;
200: argv = args->argv;
201: } else if (target == NULL) {
1.74 nicm 202: cmd = options_get_string(global_s_options, "default-command");
1.60 nicm 203: if (cmd != NULL && *cmd != '\0') {
204: argc = 1;
205: argv = &cmd;
206: } else {
207: argc = 0;
208: argv = NULL;
209: }
210: }
1.1 nicm 211:
1.59 nicm 212: path = NULL;
213: if (c != NULL && c->session == NULL)
1.75 nicm 214: envent = environ_find(c->environ, "PATH");
1.59 nicm 215: else
1.75 nicm 216: envent = environ_find(global_environ, "PATH");
1.59 nicm 217: if (envent != NULL)
218: path = envent->value;
219:
1.10 nicm 220: /* Construct the environment. */
1.75 nicm 221: env = environ_create();
1.68 nicm 222: if (c != NULL && !args_has(args, 'E')) {
1.74 nicm 223: update = options_get_string(global_s_options,
1.68 nicm 224: "update-environment");
1.75 nicm 225: environ_update(update, c->environ, env);
1.68 nicm 226: }
1.11 nicm 227:
1.4 nicm 228: /* Create the new session. */
1.74 nicm 229: idx = -1 - options_get_number(global_s_options, "base-index");
1.75 nicm 230: s = session_create(newname, argc, argv, path, cwd, env, tiop, idx, sx,
1.60 nicm 231: sy, &cause);
1.75 nicm 232: environ_free(env);
1.1 nicm 233: if (s == NULL) {
1.48 nicm 234: cmdq_error(cmdq, "create session failed: %s", cause);
1.44 nicm 235: free(cause);
1.54 nicm 236: goto error;
1.1 nicm 237: }
1.4 nicm 238:
1.16 nicm 239: /* Set the initial window name if one given. */
1.60 nicm 240: if (argc >= 0 && args_has(args, 'n')) {
1.16 nicm 241: w = s->curw->window;
1.40 nicm 242: window_set_name(w, args_get(args, 'n'));
1.74 nicm 243: options_set_number(w->options, "automatic-rename", 0);
1.21 nicm 244: }
245:
246: /*
247: * If a target session is given, this is to be part of a session group,
248: * so add it to the group and synchronize.
249: */
1.81 ! nicm 250: if (args_has(args, 't')) {
1.21 nicm 251: session_group_add(groupwith, s);
252: session_group_synchronize_to(s);
1.66 nicm 253: session_select(s, RB_MIN(winlinks, &s->windows)->idx);
1.1 nicm 254: }
255:
1.16 nicm 256: /*
257: * Set the client to the new session. If a command client exists, it is
258: * taking this session and needs to get MSG_READY and stay around.
1.4 nicm 259: */
1.25 nicm 260: if (!detached) {
1.73 nicm 261: if (!already_attached) {
262: if (~c->flags & CLIENT_CONTROL)
263: proc_send(c->peer, MSG_READY, -1, NULL, 0);
264: } else if (c->session != NULL)
1.48 nicm 265: c->last_session = c->session;
266: c->session = s;
1.80 nicm 267: server_client_set_key_table(c, NULL);
1.69 nicm 268: status_timer_start(c);
1.48 nicm 269: notify_attached_session_changed(c);
1.70 nicm 270: session_update_activity(s, NULL);
1.71 nicm 271: gettimeofday(&s->last_attached_time, NULL);
1.48 nicm 272: server_redraw_client(c);
1.1 nicm 273: }
274: recalculate_sizes();
1.22 nicm 275: server_update_socket();
1.26 nicm 276:
277: /*
278: * If there are still configuration file errors to display, put the new
279: * session's current window into more mode and display them now.
280: */
1.46 nicm 281: if (cfg_finished)
1.48 nicm 282: cfg_show_causes(s);
1.50 nicm 283:
284: /* Print if requested. */
285: if (args_has(args, 'P')) {
286: if ((template = args_get(args, 'F')) == NULL)
287: template = NEW_SESSION_TEMPLATE;
288:
1.79 nicm 289: ft = format_create(cmdq, 0);
1.81 ! nicm 290: format_defaults(ft, c, s, NULL, NULL);
1.50 nicm 291:
292: cp = format_expand(ft, template);
293: cmdq_print(cmdq, "%s", cp);
294: free(cp);
295:
296: format_free(ft);
297: }
1.1 nicm 298:
1.48 nicm 299: if (!detached)
300: cmdq->client_exit = 0;
1.54 nicm 301:
1.76 nicm 302: if (to_free != NULL)
303: free((void *)to_free);
1.48 nicm 304: return (CMD_RETURN_NORMAL);
1.54 nicm 305:
306: error:
1.76 nicm 307: if (to_free != NULL)
308: free((void *)to_free);
1.54 nicm 309: return (CMD_RETURN_ERROR);
1.1 nicm 310: }
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