Annotation of src/usr.bin/tmux/cmd-new-session.c, Revision 1.77
1.77 ! nicm 1: /* $OpenBSD: cmd-new-session.c,v 1.76 2015/10/31 08:13:58 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]",
1.67 nicm 44: CMD_STARTSERVER,
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,
52: 0,
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;
1.54 nicm 60: struct client *c = cmdq->client, *c0;
1.50 nicm 61: struct session *s, *groupwith;
62: struct window *w;
1.75 nicm 63: struct environ *env;
1.50 nicm 64: struct termios tio, *tiop;
1.54 nicm 65: const char *newname, *target, *update, *errstr, *template;
1.76 nicm 66: const char *path, *cwd, *to_free;
1.60 nicm 67: char **argv, *cmd, *cause, *cp;
1.76 nicm 68: int detached, already_attached, idx, argc;
1.50 nicm 69: u_int sx, sy;
70: struct format_tree *ft;
1.59 nicm 71: struct environ_entry *envent;
1.62 nicm 72:
73: if (self->entry == &cmd_has_session_entry) {
74: if (cmd_find_session(cmdq, args_get(args, 't'), 0) == NULL)
75: return (CMD_RETURN_ERROR);
76: return (CMD_RETURN_NORMAL);
77: }
1.51 nicm 78:
79: if (args_has(args, 't') && (args->argc != 0 || args_has(args, 'n'))) {
80: cmdq_error(cmdq, "command or window name given with target");
81: return (CMD_RETURN_ERROR);
82: }
1.34 nicm 83:
84: newname = args_get(args, 's');
1.38 nicm 85: if (newname != NULL) {
86: if (!session_check_name(newname)) {
1.48 nicm 87: cmdq_error(cmdq, "bad session name: %s", newname);
1.45 nicm 88: return (CMD_RETURN_ERROR);
1.38 nicm 89: }
90: if (session_find(newname) != NULL) {
1.49 nicm 91: if (args_has(args, 'A')) {
92: return (cmd_attach_session(cmdq, newname,
1.68 nicm 93: args_has(args, 'D'), 0, NULL,
94: args_has(args, 'E')));
1.49 nicm 95: }
1.48 nicm 96: cmdq_error(cmdq, "duplicate session: %s", newname);
1.45 nicm 97: return (CMD_RETURN_ERROR);
1.38 nicm 98: }
1.4 nicm 99: }
1.1 nicm 100:
1.34 nicm 101: target = args_get(args, 't');
102: if (target != NULL) {
1.48 nicm 103: groupwith = cmd_find_session(cmdq, target, 0);
1.34 nicm 104: if (groupwith == NULL)
1.45 nicm 105: return (CMD_RETURN_ERROR);
1.34 nicm 106: } else
107: groupwith = NULL;
1.21 nicm 108:
1.6 nicm 109: /* Set -d if no client. */
1.34 nicm 110: detached = args_has(args, 'd');
1.48 nicm 111: if (c == NULL)
1.6 nicm 112: detached = 1;
113:
1.48 nicm 114: /* Is this client already attached? */
115: already_attached = 0;
116: if (c != NULL && c->session != NULL)
117: already_attached = 1;
118:
1.54 nicm 119: /* Get the new session working directory. */
1.76 nicm 120: to_free = NULL;
1.54 nicm 121: if (args_has(args, 'c')) {
122: ft = format_create();
1.64 nicm 123: format_defaults(ft, cmd_find_client(cmdq, NULL, 1), NULL, NULL,
124: NULL);
1.76 nicm 125: to_free = cwd = format_expand(ft, args_get(args, 'c'));
1.54 nicm 126: format_free(ft);
1.55 nicm 127: } else if (c != NULL && c->session == NULL)
1.54 nicm 128: cwd = c->cwd;
1.65 nicm 129: else if ((c0 = cmd_find_client(cmdq, NULL, 1)) != NULL)
1.54 nicm 130: cwd = c0->session->cwd;
1.76 nicm 131: else
132: cwd = ".";
1.54 nicm 133:
1.15 nicm 134: /*
1.67 nicm 135: * If this is a new client, check for nesting and save the termios
136: * settings (part of which is used for new windows in this session).
1.15 nicm 137: *
1.67 nicm 138: * tcgetattr() is used rather than using tty.tio since if the client is
139: * detached, tty_open won't be called. It must be done before opening
140: * the terminal as that calls tcsetattr() to prepare for tmux taking
141: * over.
1.15 nicm 142: */
1.48 nicm 143: if (!detached && !already_attached && c->tty.fd != -1) {
1.67 nicm 144: if (server_client_check_nested(cmdq->client)) {
145: cmdq_error(cmdq, "sessions should be nested with care, "
146: "unset $TMUX to force");
147: return (CMD_RETURN_ERROR);
148: }
1.48 nicm 149: if (tcgetattr(c->tty.fd, &tio) != 0)
1.15 nicm 150: fatal("tcgetattr failed");
1.19 nicm 151: tiop = &tio;
1.15 nicm 152: } else
1.19 nicm 153: tiop = NULL;
1.15 nicm 154:
1.4 nicm 155: /* Open the terminal if necessary. */
1.48 nicm 156: if (!detached && !already_attached) {
1.57 nicm 157: if (server_client_open(c, &cause) != 0) {
1.48 nicm 158: cmdq_error(cmdq, "open terminal failed: %s", cause);
1.44 nicm 159: free(cause);
1.54 nicm 160: goto error;
1.1 nicm 161: }
162: }
163:
1.16 nicm 164: /* Find new session size. */
1.48 nicm 165: if (c != NULL) {
166: sx = c->tty.sx;
167: sy = c->tty.sy;
1.39 nicm 168: } else {
1.4 nicm 169: sx = 80;
1.18 nicm 170: sy = 24;
1.39 nicm 171: }
1.48 nicm 172: if (detached && args_has(args, 'x')) {
173: sx = strtonum(args_get(args, 'x'), 1, USHRT_MAX, &errstr);
174: if (errstr != NULL) {
175: cmdq_error(cmdq, "width %s", errstr);
1.54 nicm 176: goto error;
1.35 nicm 177: }
1.48 nicm 178: }
179: if (detached && args_has(args, 'y')) {
180: sy = strtonum(args_get(args, 'y'), 1, USHRT_MAX, &errstr);
181: if (errstr != NULL) {
182: cmdq_error(cmdq, "height %s", errstr);
1.54 nicm 183: goto error;
1.35 nicm 184: }
1.1 nicm 185: }
1.74 nicm 186: if (sy > 0 && options_get_number(global_s_options, "status"))
1.4 nicm 187: sy--;
188: if (sx == 0)
189: sx = 1;
190: if (sy == 0)
191: sy = 1;
1.16 nicm 192:
193: /* Figure out the command for the new window. */
1.60 nicm 194: argc = -1;
195: argv = NULL;
196: if (target == NULL && args->argc != 0) {
197: argc = args->argc;
198: argv = args->argv;
199: } else if (target == NULL) {
1.74 nicm 200: cmd = options_get_string(global_s_options, "default-command");
1.60 nicm 201: if (cmd != NULL && *cmd != '\0') {
202: argc = 1;
203: argv = &cmd;
204: } else {
205: argc = 0;
206: argv = NULL;
207: }
208: }
1.1 nicm 209:
1.59 nicm 210: path = NULL;
211: if (c != NULL && c->session == NULL)
1.75 nicm 212: envent = environ_find(c->environ, "PATH");
1.59 nicm 213: else
1.75 nicm 214: envent = environ_find(global_environ, "PATH");
1.59 nicm 215: if (envent != NULL)
216: path = envent->value;
217:
1.10 nicm 218: /* Construct the environment. */
1.75 nicm 219: env = environ_create();
1.68 nicm 220: if (c != NULL && !args_has(args, 'E')) {
1.74 nicm 221: update = options_get_string(global_s_options,
1.68 nicm 222: "update-environment");
1.75 nicm 223: environ_update(update, c->environ, env);
1.68 nicm 224: }
1.11 nicm 225:
1.4 nicm 226: /* Create the new session. */
1.74 nicm 227: idx = -1 - options_get_number(global_s_options, "base-index");
1.75 nicm 228: s = session_create(newname, argc, argv, path, cwd, env, tiop, idx, sx,
1.60 nicm 229: sy, &cause);
1.75 nicm 230: environ_free(env);
1.1 nicm 231: if (s == NULL) {
1.48 nicm 232: cmdq_error(cmdq, "create session failed: %s", cause);
1.44 nicm 233: free(cause);
1.54 nicm 234: goto error;
1.1 nicm 235: }
1.4 nicm 236:
1.16 nicm 237: /* Set the initial window name if one given. */
1.60 nicm 238: if (argc >= 0 && args_has(args, 'n')) {
1.16 nicm 239: w = s->curw->window;
1.40 nicm 240: window_set_name(w, args_get(args, 'n'));
1.74 nicm 241: options_set_number(w->options, "automatic-rename", 0);
1.21 nicm 242: }
243:
244: /*
245: * If a target session is given, this is to be part of a session group,
246: * so add it to the group and synchronize.
247: */
248: if (groupwith != NULL) {
249: session_group_add(groupwith, s);
250: session_group_synchronize_to(s);
1.66 nicm 251: session_select(s, RB_MIN(winlinks, &s->windows)->idx);
1.1 nicm 252: }
253:
1.16 nicm 254: /*
255: * Set the client to the new session. If a command client exists, it is
256: * taking this session and needs to get MSG_READY and stay around.
1.4 nicm 257: */
1.25 nicm 258: if (!detached) {
1.73 nicm 259: if (!already_attached) {
260: if (~c->flags & CLIENT_CONTROL)
261: proc_send(c->peer, MSG_READY, -1, NULL, 0);
262: } else if (c->session != NULL)
1.48 nicm 263: c->last_session = c->session;
264: c->session = s;
1.69 nicm 265: status_timer_start(c);
1.48 nicm 266: notify_attached_session_changed(c);
1.70 nicm 267: session_update_activity(s, NULL);
1.71 nicm 268: gettimeofday(&s->last_attached_time, NULL);
1.48 nicm 269: server_redraw_client(c);
1.1 nicm 270: }
271: recalculate_sizes();
1.22 nicm 272: server_update_socket();
1.26 nicm 273:
274: /*
275: * If there are still configuration file errors to display, put the new
276: * session's current window into more mode and display them now.
277: */
1.46 nicm 278: if (cfg_finished)
1.48 nicm 279: cfg_show_causes(s);
1.50 nicm 280:
281: /* Print if requested. */
282: if (args_has(args, 'P')) {
283: if ((template = args_get(args, 'F')) == NULL)
284: template = NEW_SESSION_TEMPLATE;
285:
286: ft = format_create();
1.64 nicm 287: format_defaults(ft, cmd_find_client(cmdq, NULL, 1), s, NULL,
288: NULL);
1.50 nicm 289:
290: cp = format_expand(ft, template);
291: cmdq_print(cmdq, "%s", cp);
292: free(cp);
293:
294: format_free(ft);
295: }
1.1 nicm 296:
1.48 nicm 297: if (!detached)
298: cmdq->client_exit = 0;
1.54 nicm 299:
1.76 nicm 300: if (to_free != NULL)
301: free((void *)to_free);
1.48 nicm 302: return (CMD_RETURN_NORMAL);
1.54 nicm 303:
304: error:
1.76 nicm 305: if (to_free != NULL)
306: free((void *)to_free);
1.54 nicm 307: return (CMD_RETURN_ERROR);
1.1 nicm 308: }
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