Annotation of src/usr.bin/tmux/cmd-new-session.c, Revision 1.67
1.67 ! nicm 1: /* $OpenBSD: cmd-new-session.c,v 1.66 2015/05/29 23:02:27 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",
1.60 nicm 40: "Ac:dDF:n:Ps:t:x:y:", 0, -1,
1.52 nicm 41: "[-AdDP] [-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;
63: struct environ env;
64: struct termios tio, *tiop;
1.54 nicm 65: const char *newname, *target, *update, *errstr, *template;
1.59 nicm 66: const char *path;
1.60 nicm 67: char **argv, *cmd, *cause, *cp;
1.54 nicm 68: int detached, already_attached, idx, cwd, fd = -1;
1.60 nicm 69: int 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) {
75: if (cmd_find_session(cmdq, args_get(args, 't'), 0) == NULL)
76: return (CMD_RETURN_ERROR);
77: return (CMD_RETURN_NORMAL);
78: }
1.51 nicm 79:
80: if (args_has(args, 't') && (args->argc != 0 || args_has(args, 'n'))) {
81: cmdq_error(cmdq, "command or window name given with target");
82: return (CMD_RETURN_ERROR);
83: }
1.34 nicm 84:
85: newname = args_get(args, 's');
1.38 nicm 86: if (newname != NULL) {
87: if (!session_check_name(newname)) {
1.48 nicm 88: cmdq_error(cmdq, "bad session name: %s", newname);
1.45 nicm 89: return (CMD_RETURN_ERROR);
1.38 nicm 90: }
91: if (session_find(newname) != NULL) {
1.49 nicm 92: if (args_has(args, 'A')) {
93: return (cmd_attach_session(cmdq, newname,
1.54 nicm 94: args_has(args, 'D'), 0, NULL));
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. */
120: if (args_has(args, 'c')) {
121: ft = format_create();
1.64 nicm 122: format_defaults(ft, cmd_find_client(cmdq, NULL, 1), NULL, NULL,
123: NULL);
1.54 nicm 124: cp = format_expand(ft, args_get(args, 'c'));
125: format_free(ft);
126:
1.56 nicm 127: if (cp != NULL && *cp != '\0') {
128: fd = open(cp, O_RDONLY|O_DIRECTORY);
129: free(cp);
130: if (fd == -1) {
131: cmdq_error(cmdq, "bad working directory: %s",
132: strerror(errno));
133: return (CMD_RETURN_ERROR);
134: }
135: } else if (cp != NULL)
136: free(cp);
1.54 nicm 137: cwd = fd;
1.55 nicm 138: } else if (c != NULL && c->session == NULL)
1.54 nicm 139: cwd = c->cwd;
1.65 nicm 140: else if ((c0 = cmd_find_client(cmdq, NULL, 1)) != NULL)
1.54 nicm 141: cwd = c0->session->cwd;
142: else {
143: fd = open(".", O_RDONLY);
144: cwd = fd;
145: }
146:
1.15 nicm 147: /*
1.67 ! nicm 148: * If this is a new client, check for nesting and save the termios
! 149: * settings (part of which is used for new windows in this session).
1.15 nicm 150: *
1.67 ! nicm 151: * tcgetattr() is used rather than using tty.tio since if the client is
! 152: * detached, tty_open won't be called. It must be done before opening
! 153: * the terminal as that calls tcsetattr() to prepare for tmux taking
! 154: * over.
1.15 nicm 155: */
1.48 nicm 156: if (!detached && !already_attached && c->tty.fd != -1) {
1.67 ! nicm 157: if (server_client_check_nested(cmdq->client)) {
! 158: cmdq_error(cmdq, "sessions should be nested with care, "
! 159: "unset $TMUX to force");
! 160: return (CMD_RETURN_ERROR);
! 161: }
1.48 nicm 162: if (tcgetattr(c->tty.fd, &tio) != 0)
1.15 nicm 163: fatal("tcgetattr failed");
1.19 nicm 164: tiop = &tio;
1.15 nicm 165: } else
1.19 nicm 166: tiop = NULL;
1.15 nicm 167:
1.4 nicm 168: /* Open the terminal if necessary. */
1.48 nicm 169: if (!detached && !already_attached) {
1.57 nicm 170: if (server_client_open(c, &cause) != 0) {
1.48 nicm 171: cmdq_error(cmdq, "open terminal failed: %s", cause);
1.44 nicm 172: free(cause);
1.54 nicm 173: goto error;
1.1 nicm 174: }
175: }
176:
1.16 nicm 177: /* Find new session size. */
1.48 nicm 178: if (c != NULL) {
179: sx = c->tty.sx;
180: sy = c->tty.sy;
1.39 nicm 181: } else {
1.4 nicm 182: sx = 80;
1.18 nicm 183: sy = 24;
1.39 nicm 184: }
1.48 nicm 185: if (detached && args_has(args, 'x')) {
186: sx = strtonum(args_get(args, 'x'), 1, USHRT_MAX, &errstr);
187: if (errstr != NULL) {
188: cmdq_error(cmdq, "width %s", errstr);
1.54 nicm 189: goto error;
1.35 nicm 190: }
1.48 nicm 191: }
192: if (detached && args_has(args, 'y')) {
193: sy = strtonum(args_get(args, 'y'), 1, USHRT_MAX, &errstr);
194: if (errstr != NULL) {
195: cmdq_error(cmdq, "height %s", errstr);
1.54 nicm 196: goto error;
1.35 nicm 197: }
1.1 nicm 198: }
1.7 nicm 199: if (sy > 0 && options_get_number(&global_s_options, "status"))
1.4 nicm 200: sy--;
201: if (sx == 0)
202: sx = 1;
203: if (sy == 0)
204: sy = 1;
1.16 nicm 205:
206: /* Figure out the command for the new window. */
1.60 nicm 207: argc = -1;
208: argv = NULL;
209: if (target == NULL && args->argc != 0) {
210: argc = args->argc;
211: argv = args->argv;
212: } else if (target == NULL) {
1.7 nicm 213: cmd = options_get_string(&global_s_options, "default-command");
1.60 nicm 214: if (cmd != NULL && *cmd != '\0') {
215: argc = 1;
216: argv = &cmd;
217: } else {
218: argc = 0;
219: argv = NULL;
220: }
221: }
1.1 nicm 222:
1.59 nicm 223: path = NULL;
224: if (c != NULL && c->session == NULL)
225: envent = environ_find(&c->environ, "PATH");
226: else
227: envent = environ_find(&global_environ, "PATH");
228: if (envent != NULL)
229: path = envent->value;
230:
1.10 nicm 231: /* Construct the environment. */
232: environ_init(&env);
233: update = options_get_string(&global_s_options, "update-environment");
1.48 nicm 234: if (c != NULL)
235: environ_update(update, &c->environ, &env);
1.11 nicm 236:
1.4 nicm 237: /* Create the new session. */
1.13 nicm 238: idx = -1 - options_get_number(&global_s_options, "base-index");
1.60 nicm 239: s = session_create(newname, argc, argv, path, cwd, &env, tiop, idx, sx,
240: sy, &cause);
1.1 nicm 241: if (s == NULL) {
1.48 nicm 242: cmdq_error(cmdq, "create session failed: %s", cause);
1.44 nicm 243: free(cause);
1.54 nicm 244: goto error;
1.1 nicm 245: }
1.10 nicm 246: environ_free(&env);
1.4 nicm 247:
1.16 nicm 248: /* Set the initial window name if one given. */
1.60 nicm 249: if (argc >= 0 && args_has(args, 'n')) {
1.16 nicm 250: w = s->curw->window;
1.40 nicm 251: window_set_name(w, args_get(args, 'n'));
1.16 nicm 252: options_set_number(&w->options, "automatic-rename", 0);
1.21 nicm 253: }
254:
255: /*
256: * If a target session is given, this is to be part of a session group,
257: * so add it to the group and synchronize.
258: */
259: if (groupwith != NULL) {
260: session_group_add(groupwith, s);
261: session_group_synchronize_to(s);
1.66 nicm 262: session_select(s, RB_MIN(winlinks, &s->windows)->idx);
1.1 nicm 263: }
264:
1.16 nicm 265: /*
266: * Set the client to the new session. If a command client exists, it is
267: * taking this session and needs to get MSG_READY and stay around.
1.4 nicm 268: */
1.25 nicm 269: if (!detached) {
1.48 nicm 270: if (!already_attached)
271: server_write_ready(c);
272: else if (c->session != NULL)
273: c->last_session = c->session;
274: c->session = s;
275: notify_attached_session_changed(c);
276: session_update_activity(s);
277: server_redraw_client(c);
1.1 nicm 278: }
279: recalculate_sizes();
1.22 nicm 280: server_update_socket();
1.26 nicm 281:
282: /*
283: * If there are still configuration file errors to display, put the new
284: * session's current window into more mode and display them now.
285: */
1.46 nicm 286: if (cfg_finished)
1.48 nicm 287: cfg_show_causes(s);
1.50 nicm 288:
289: /* Print if requested. */
290: if (args_has(args, 'P')) {
291: if ((template = args_get(args, 'F')) == NULL)
292: template = NEW_SESSION_TEMPLATE;
293:
294: ft = format_create();
1.64 nicm 295: format_defaults(ft, cmd_find_client(cmdq, NULL, 1), s, NULL,
296: NULL);
1.50 nicm 297:
298: cp = format_expand(ft, template);
299: cmdq_print(cmdq, "%s", cp);
300: free(cp);
301:
302: format_free(ft);
303: }
1.1 nicm 304:
1.48 nicm 305: if (!detached)
306: cmdq->client_exit = 0;
1.54 nicm 307:
308: if (fd != -1)
309: close(fd);
1.48 nicm 310: return (CMD_RETURN_NORMAL);
1.54 nicm 311:
312: error:
313: if (fd != -1)
314: close(fd);
315: return (CMD_RETURN_ERROR);
1.1 nicm 316: }
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