Annotation of src/usr.bin/tmux/cmd-new-session.c, Revision 1.68
1.68 ! nicm 1: /* $OpenBSD: cmd-new-session.c,v 1.67 2015/06/04 23:27:51 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;
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,
1.68 ! nicm 94: args_has(args, 'D'), 0, NULL,
! 95: args_has(args, 'E')));
1.49 nicm 96: }
1.48 nicm 97: cmdq_error(cmdq, "duplicate session: %s", newname);
1.45 nicm 98: return (CMD_RETURN_ERROR);
1.38 nicm 99: }
1.4 nicm 100: }
1.1 nicm 101:
1.34 nicm 102: target = args_get(args, 't');
103: if (target != NULL) {
1.48 nicm 104: groupwith = cmd_find_session(cmdq, target, 0);
1.34 nicm 105: if (groupwith == NULL)
1.45 nicm 106: return (CMD_RETURN_ERROR);
1.34 nicm 107: } else
108: groupwith = NULL;
1.21 nicm 109:
1.6 nicm 110: /* Set -d if no client. */
1.34 nicm 111: detached = args_has(args, 'd');
1.48 nicm 112: if (c == NULL)
1.6 nicm 113: detached = 1;
114:
1.48 nicm 115: /* Is this client already attached? */
116: already_attached = 0;
117: if (c != NULL && c->session != NULL)
118: already_attached = 1;
119:
1.54 nicm 120: /* Get the new session working directory. */
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);
1.54 nicm 125: cp = format_expand(ft, args_get(args, 'c'));
126: format_free(ft);
127:
1.56 nicm 128: if (cp != NULL && *cp != '\0') {
129: fd = open(cp, O_RDONLY|O_DIRECTORY);
130: free(cp);
131: if (fd == -1) {
132: cmdq_error(cmdq, "bad working directory: %s",
133: strerror(errno));
134: return (CMD_RETURN_ERROR);
135: }
136: } else if (cp != NULL)
137: free(cp);
1.54 nicm 138: cwd = fd;
1.55 nicm 139: } else if (c != NULL && c->session == NULL)
1.54 nicm 140: cwd = c->cwd;
1.65 nicm 141: else if ((c0 = cmd_find_client(cmdq, NULL, 1)) != NULL)
1.54 nicm 142: cwd = c0->session->cwd;
143: else {
144: fd = open(".", O_RDONLY);
145: cwd = fd;
146: }
147:
1.15 nicm 148: /*
1.67 nicm 149: * If this is a new client, check for nesting and save the termios
150: * settings (part of which is used for new windows in this session).
1.15 nicm 151: *
1.67 nicm 152: * tcgetattr() is used rather than using tty.tio since if the client is
153: * detached, tty_open won't be called. It must be done before opening
154: * the terminal as that calls tcsetattr() to prepare for tmux taking
155: * over.
1.15 nicm 156: */
1.48 nicm 157: if (!detached && !already_attached && c->tty.fd != -1) {
1.67 nicm 158: if (server_client_check_nested(cmdq->client)) {
159: cmdq_error(cmdq, "sessions should be nested with care, "
160: "unset $TMUX to force");
161: return (CMD_RETURN_ERROR);
162: }
1.48 nicm 163: if (tcgetattr(c->tty.fd, &tio) != 0)
1.15 nicm 164: fatal("tcgetattr failed");
1.19 nicm 165: tiop = &tio;
1.15 nicm 166: } else
1.19 nicm 167: tiop = NULL;
1.15 nicm 168:
1.4 nicm 169: /* Open the terminal if necessary. */
1.48 nicm 170: if (!detached && !already_attached) {
1.57 nicm 171: if (server_client_open(c, &cause) != 0) {
1.48 nicm 172: cmdq_error(cmdq, "open terminal failed: %s", cause);
1.44 nicm 173: free(cause);
1.54 nicm 174: goto error;
1.1 nicm 175: }
176: }
177:
1.16 nicm 178: /* Find new session size. */
1.48 nicm 179: if (c != NULL) {
180: sx = c->tty.sx;
181: sy = c->tty.sy;
1.39 nicm 182: } else {
1.4 nicm 183: sx = 80;
1.18 nicm 184: sy = 24;
1.39 nicm 185: }
1.48 nicm 186: if (detached && args_has(args, 'x')) {
187: sx = strtonum(args_get(args, 'x'), 1, USHRT_MAX, &errstr);
188: if (errstr != NULL) {
189: cmdq_error(cmdq, "width %s", errstr);
1.54 nicm 190: goto error;
1.35 nicm 191: }
1.48 nicm 192: }
193: if (detached && args_has(args, 'y')) {
194: sy = strtonum(args_get(args, 'y'), 1, USHRT_MAX, &errstr);
195: if (errstr != NULL) {
196: cmdq_error(cmdq, "height %s", errstr);
1.54 nicm 197: goto error;
1.35 nicm 198: }
1.1 nicm 199: }
1.7 nicm 200: if (sy > 0 && options_get_number(&global_s_options, "status"))
1.4 nicm 201: sy--;
202: if (sx == 0)
203: sx = 1;
204: if (sy == 0)
205: sy = 1;
1.16 nicm 206:
207: /* Figure out the command for the new window. */
1.60 nicm 208: argc = -1;
209: argv = NULL;
210: if (target == NULL && args->argc != 0) {
211: argc = args->argc;
212: argv = args->argv;
213: } else if (target == NULL) {
1.7 nicm 214: cmd = options_get_string(&global_s_options, "default-command");
1.60 nicm 215: if (cmd != NULL && *cmd != '\0') {
216: argc = 1;
217: argv = &cmd;
218: } else {
219: argc = 0;
220: argv = NULL;
221: }
222: }
1.1 nicm 223:
1.59 nicm 224: path = NULL;
225: if (c != NULL && c->session == NULL)
226: envent = environ_find(&c->environ, "PATH");
227: else
228: envent = environ_find(&global_environ, "PATH");
229: if (envent != NULL)
230: path = envent->value;
231:
1.10 nicm 232: /* Construct the environment. */
233: environ_init(&env);
1.68 ! nicm 234: if (c != NULL && !args_has(args, 'E')) {
! 235: update = options_get_string(&global_s_options,
! 236: "update-environment");
1.48 nicm 237: environ_update(update, &c->environ, &env);
1.68 ! nicm 238: }
1.11 nicm 239:
1.4 nicm 240: /* Create the new session. */
1.13 nicm 241: idx = -1 - options_get_number(&global_s_options, "base-index");
1.60 nicm 242: s = session_create(newname, argc, argv, path, cwd, &env, tiop, idx, sx,
243: sy, &cause);
1.1 nicm 244: if (s == NULL) {
1.48 nicm 245: cmdq_error(cmdq, "create session failed: %s", cause);
1.44 nicm 246: free(cause);
1.54 nicm 247: goto error;
1.1 nicm 248: }
1.10 nicm 249: environ_free(&env);
1.4 nicm 250:
1.16 nicm 251: /* Set the initial window name if one given. */
1.60 nicm 252: if (argc >= 0 && args_has(args, 'n')) {
1.16 nicm 253: w = s->curw->window;
1.40 nicm 254: window_set_name(w, args_get(args, 'n'));
1.16 nicm 255: options_set_number(&w->options, "automatic-rename", 0);
1.21 nicm 256: }
257:
258: /*
259: * If a target session is given, this is to be part of a session group,
260: * so add it to the group and synchronize.
261: */
262: if (groupwith != NULL) {
263: session_group_add(groupwith, s);
264: session_group_synchronize_to(s);
1.66 nicm 265: session_select(s, RB_MIN(winlinks, &s->windows)->idx);
1.1 nicm 266: }
267:
1.16 nicm 268: /*
269: * Set the client to the new session. If a command client exists, it is
270: * taking this session and needs to get MSG_READY and stay around.
1.4 nicm 271: */
1.25 nicm 272: if (!detached) {
1.48 nicm 273: if (!already_attached)
274: server_write_ready(c);
275: else if (c->session != NULL)
276: c->last_session = c->session;
277: c->session = s;
278: notify_attached_session_changed(c);
279: session_update_activity(s);
280: server_redraw_client(c);
1.1 nicm 281: }
282: recalculate_sizes();
1.22 nicm 283: server_update_socket();
1.26 nicm 284:
285: /*
286: * If there are still configuration file errors to display, put the new
287: * session's current window into more mode and display them now.
288: */
1.46 nicm 289: if (cfg_finished)
1.48 nicm 290: cfg_show_causes(s);
1.50 nicm 291:
292: /* Print if requested. */
293: if (args_has(args, 'P')) {
294: if ((template = args_get(args, 'F')) == NULL)
295: template = NEW_SESSION_TEMPLATE;
296:
297: ft = format_create();
1.64 nicm 298: format_defaults(ft, cmd_find_client(cmdq, NULL, 1), s, NULL,
299: NULL);
1.50 nicm 300:
301: cp = format_expand(ft, template);
302: cmdq_print(cmdq, "%s", cp);
303: free(cp);
304:
305: format_free(ft);
306: }
1.1 nicm 307:
1.48 nicm 308: if (!detached)
309: cmdq->client_exit = 0;
1.54 nicm 310:
311: if (fd != -1)
312: close(fd);
1.48 nicm 313: return (CMD_RETURN_NORMAL);
1.54 nicm 314:
315: error:
316: if (fd != -1)
317: close(fd);
318: return (CMD_RETURN_ERROR);
1.1 nicm 319: }
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