Annotation of src/usr.bin/tmux/cmd-new-session.c, Revision 1.50
1.50 ! nicm 1: /* $OpenBSD: cmd-new-session.c,v 1.49 2013/03/24 09:58:40 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:
1.30 nicm 21: #include <pwd.h>
1.35 nicm 22: #include <stdlib.h>
1.11 nicm 23: #include <string.h>
24: #include <termios.h>
1.30 nicm 25: #include <unistd.h>
1.11 nicm 26:
1.1 nicm 27: #include "tmux.h"
28:
29: /*
30: * Create a new session and attach to the current terminal unless -d is given.
31: */
32:
1.45 nicm 33: enum cmd_retval cmd_new_session_check(struct args *);
1.48 nicm 34: enum cmd_retval cmd_new_session_exec(struct cmd *, struct cmd_q *);
1.1 nicm 35:
36: const struct cmd_entry cmd_new_session_entry = {
37: "new-session", "new",
1.50 ! nicm 38: "AdDF:n:Ps:t:x:y:", 0, 1,
! 39: "[-AdDP] [-F format] [-n window-name] [-s session-name] "
! 40: CMD_TARGET_SESSION_USAGE " [-x width] [-y height] [command]",
1.34 nicm 41: CMD_STARTSERVER|CMD_CANTNEST|CMD_SENDENVIRON,
42: NULL,
43: cmd_new_session_check,
44: cmd_new_session_exec
1.1 nicm 45: };
46:
1.45 nicm 47: enum cmd_retval
1.34 nicm 48: cmd_new_session_check(struct args *args)
1.1 nicm 49: {
1.34 nicm 50: if (args_has(args, 't') && (args->argc != 0 || args_has(args, 'n')))
1.45 nicm 51: return (CMD_RETURN_ERROR);
52: return (CMD_RETURN_NORMAL);
1.1 nicm 53: }
54:
1.45 nicm 55: enum cmd_retval
1.48 nicm 56: cmd_new_session_exec(struct cmd *self, struct cmd_q *cmdq)
1.1 nicm 57: {
1.50 ! nicm 58: struct args *args = self->args;
! 59: struct client *c = cmdq->client;
! 60: struct session *s, *groupwith;
! 61: struct window *w;
! 62: struct environ env;
! 63: struct termios tio, *tiop;
! 64: struct passwd *pw;
! 65: const char *newname, *target, *update, *cwd, *errstr;
! 66: const char *template;
! 67: char *cmd, *cause, *cp;
! 68: int detached, idx;
! 69: u_int sx, sy;
! 70: int already_attached;
! 71: struct format_tree *ft;
1.34 nicm 72:
73: newname = args_get(args, 's');
1.38 nicm 74: if (newname != NULL) {
75: if (!session_check_name(newname)) {
1.48 nicm 76: cmdq_error(cmdq, "bad session name: %s", newname);
1.45 nicm 77: return (CMD_RETURN_ERROR);
1.38 nicm 78: }
79: if (session_find(newname) != NULL) {
1.49 nicm 80: if (args_has(args, 'A')) {
81: return (cmd_attach_session(cmdq, newname,
82: args_has(args, 'D'), 0));
83: }
1.48 nicm 84: cmdq_error(cmdq, "duplicate session: %s", newname);
1.45 nicm 85: return (CMD_RETURN_ERROR);
1.38 nicm 86: }
1.4 nicm 87: }
1.1 nicm 88:
1.34 nicm 89: target = args_get(args, 't');
90: if (target != NULL) {
1.48 nicm 91: groupwith = cmd_find_session(cmdq, target, 0);
1.34 nicm 92: if (groupwith == NULL)
1.45 nicm 93: return (CMD_RETURN_ERROR);
1.34 nicm 94: } else
95: groupwith = NULL;
1.21 nicm 96:
1.6 nicm 97: /* Set -d if no client. */
1.34 nicm 98: detached = args_has(args, 'd');
1.48 nicm 99: if (c == NULL)
1.6 nicm 100: detached = 1;
101:
1.48 nicm 102: /* Is this client already attached? */
103: already_attached = 0;
104: if (c != NULL && c->session != NULL)
105: already_attached = 1;
106:
1.15 nicm 107: /*
1.19 nicm 108: * Save the termios settings, part of which is used for new windows in
109: * this session.
1.15 nicm 110: *
111: * This is read again with tcgetattr() rather than using tty.tio as if
112: * detached, tty_open won't be called. Because of this, it must be done
113: * before opening the terminal as that calls tcsetattr() to prepare for
114: * tmux taking over.
115: */
1.48 nicm 116: if (!detached && !already_attached && c->tty.fd != -1) {
117: if (tcgetattr(c->tty.fd, &tio) != 0)
1.15 nicm 118: fatal("tcgetattr failed");
1.19 nicm 119: tiop = &tio;
1.15 nicm 120: } else
1.19 nicm 121: tiop = NULL;
1.15 nicm 122:
1.4 nicm 123: /* Open the terminal if necessary. */
1.48 nicm 124: if (!detached && !already_attached) {
125: if (server_client_open(c, NULL, &cause) != 0) {
126: cmdq_error(cmdq, "open terminal failed: %s", cause);
1.44 nicm 127: free(cause);
1.45 nicm 128: return (CMD_RETURN_ERROR);
1.1 nicm 129: }
130: }
131:
1.16 nicm 132: /* Get the new session working directory. */
1.48 nicm 133: if (c != NULL && c->cwd != NULL)
134: cwd = c->cwd;
1.30 nicm 135: else {
136: pw = getpwuid(getuid());
137: if (pw->pw_dir != NULL && *pw->pw_dir != '\0')
138: cwd = pw->pw_dir;
139: else
140: cwd = "/";
141: }
1.16 nicm 142:
143: /* Find new session size. */
1.48 nicm 144: if (c != NULL) {
145: sx = c->tty.sx;
146: sy = c->tty.sy;
1.39 nicm 147: } else {
1.4 nicm 148: sx = 80;
1.18 nicm 149: sy = 24;
1.39 nicm 150: }
1.48 nicm 151: if (detached && args_has(args, 'x')) {
152: sx = strtonum(args_get(args, 'x'), 1, USHRT_MAX, &errstr);
153: if (errstr != NULL) {
154: cmdq_error(cmdq, "width %s", errstr);
155: return (CMD_RETURN_ERROR);
1.35 nicm 156: }
1.48 nicm 157: }
158: if (detached && args_has(args, 'y')) {
159: sy = strtonum(args_get(args, 'y'), 1, USHRT_MAX, &errstr);
160: if (errstr != NULL) {
161: cmdq_error(cmdq, "height %s", errstr);
162: return (CMD_RETURN_ERROR);
1.35 nicm 163: }
1.1 nicm 164: }
1.7 nicm 165: if (sy > 0 && options_get_number(&global_s_options, "status"))
1.4 nicm 166: sy--;
167: if (sx == 0)
168: sx = 1;
169: if (sy == 0)
170: sy = 1;
1.16 nicm 171:
172: /* Figure out the command for the new window. */
1.34 nicm 173: if (target != NULL)
1.21 nicm 174: cmd = NULL;
1.34 nicm 175: else if (args->argc != 0)
176: cmd = args->argv[0];
1.1 nicm 177: else
1.7 nicm 178: cmd = options_get_string(&global_s_options, "default-command");
1.1 nicm 179:
1.10 nicm 180: /* Construct the environment. */
181: environ_init(&env);
182: update = options_get_string(&global_s_options, "update-environment");
1.48 nicm 183: if (c != NULL)
184: environ_update(update, &c->environ, &env);
1.11 nicm 185:
1.4 nicm 186: /* Create the new session. */
1.13 nicm 187: idx = -1 - options_get_number(&global_s_options, "base-index");
1.34 nicm 188: s = session_create(newname, cmd, cwd, &env, tiop, idx, sx, sy, &cause);
1.1 nicm 189: if (s == NULL) {
1.48 nicm 190: cmdq_error(cmdq, "create session failed: %s", cause);
1.44 nicm 191: free(cause);
1.45 nicm 192: return (CMD_RETURN_ERROR);
1.1 nicm 193: }
1.10 nicm 194: environ_free(&env);
1.4 nicm 195:
1.16 nicm 196: /* Set the initial window name if one given. */
1.34 nicm 197: if (cmd != NULL && args_has(args, 'n')) {
1.16 nicm 198: w = s->curw->window;
1.40 nicm 199: window_set_name(w, args_get(args, 'n'));
1.16 nicm 200: options_set_number(&w->options, "automatic-rename", 0);
1.21 nicm 201: }
202:
203: /*
204: * If a target session is given, this is to be part of a session group,
205: * so add it to the group and synchronize.
206: */
207: if (groupwith != NULL) {
208: session_group_add(groupwith, s);
209: session_group_synchronize_to(s);
210: session_select(s, RB_ROOT(&s->windows)->idx);
1.1 nicm 211: }
212:
1.16 nicm 213: /*
214: * Set the client to the new session. If a command client exists, it is
215: * taking this session and needs to get MSG_READY and stay around.
1.4 nicm 216: */
1.25 nicm 217: if (!detached) {
1.48 nicm 218: if (!already_attached)
219: server_write_ready(c);
220: else if (c->session != NULL)
221: c->last_session = c->session;
222: c->session = s;
223: notify_attached_session_changed(c);
224: session_update_activity(s);
225: server_redraw_client(c);
1.1 nicm 226: }
227: recalculate_sizes();
1.22 nicm 228: server_update_socket();
1.26 nicm 229:
230: /*
231: * If there are still configuration file errors to display, put the new
232: * session's current window into more mode and display them now.
233: */
1.46 nicm 234: if (cfg_finished)
1.48 nicm 235: cfg_show_causes(s);
1.50 ! nicm 236:
! 237: /* Print if requested. */
! 238: if (args_has(args, 'P')) {
! 239: if ((template = args_get(args, 'F')) == NULL)
! 240: template = NEW_SESSION_TEMPLATE;
! 241:
! 242: ft = format_create();
! 243: if ((c = cmd_find_client(cmdq, NULL, 1)) != NULL)
! 244: format_client(ft, c);
! 245: format_session(ft, s);
! 246:
! 247: cp = format_expand(ft, template);
! 248: cmdq_print(cmdq, "%s", cp);
! 249: free(cp);
! 250:
! 251: format_free(ft);
! 252: }
1.1 nicm 253:
1.48 nicm 254: if (!detached)
255: cmdq->client_exit = 0;
256: return (CMD_RETURN_NORMAL);
1.1 nicm 257: }
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