Annotation of src/usr.bin/tmux/cmd-new-session.c, Revision 1.82
1.82 ! nicm 1: /* $OpenBSD: cmd-new-session.c,v 1.81 2015/12/13 14:32:38 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 = {
1.82 ! nicm 39: .name = "new-session",
! 40: .alias = "new",
! 41:
! 42: .args = { "Ac:dDEF:n:Ps:t:x:y:", 0, -1 },
! 43: .usage = "[-AdDEP] [-c start-directory] [-F format] [-n window-name] "
! 44: "[-s session-name] " CMD_TARGET_SESSION_USAGE " [-x width] "
! 45: "[-y height] [command]",
! 46:
! 47: .flags = CMD_STARTSERVER|CMD_CANFAIL|CMD_SESSION_T,
! 48: .exec = cmd_new_session_exec
1.1 nicm 49: };
50:
1.62 nicm 51: const struct cmd_entry cmd_has_session_entry = {
1.82 ! nicm 52: .name = "has-session",
! 53: .alias = "has",
! 54:
! 55: .args = { "t:", 0, 0 },
! 56: .usage = CMD_TARGET_SESSION_USAGE,
! 57:
! 58: .flags = CMD_SESSION_T,
! 59: .exec = cmd_new_session_exec
1.62 nicm 60: };
61:
1.45 nicm 62: enum cmd_retval
1.48 nicm 63: cmd_new_session_exec(struct cmd *self, struct cmd_q *cmdq)
1.1 nicm 64: {
1.50 nicm 65: struct args *args = self->args;
1.81 nicm 66: struct client *c = cmdq->client;
67: struct session *s, *attach_sess;
68: struct session *groupwith = cmdq->state.tflag.s;
1.50 nicm 69: struct window *w;
1.75 nicm 70: struct environ *env;
1.50 nicm 71: struct termios tio, *tiop;
1.54 nicm 72: const char *newname, *target, *update, *errstr, *template;
1.76 nicm 73: const char *path, *cwd, *to_free;
1.60 nicm 74: char **argv, *cmd, *cause, *cp;
1.76 nicm 75: int detached, already_attached, idx, argc;
1.50 nicm 76: u_int sx, sy;
77: struct format_tree *ft;
1.59 nicm 78: struct environ_entry *envent;
1.62 nicm 79:
80: if (self->entry == &cmd_has_session_entry) {
1.81 nicm 81: /*
82: * cmd_prepare() will fail if the session cannot be found,
83: * hence always return success here.
84: */
1.62 nicm 85: return (CMD_RETURN_NORMAL);
86: }
1.51 nicm 87:
88: if (args_has(args, 't') && (args->argc != 0 || args_has(args, 'n'))) {
89: cmdq_error(cmdq, "command or window name given with target");
90: return (CMD_RETURN_ERROR);
91: }
1.34 nicm 92:
93: newname = args_get(args, 's');
1.38 nicm 94: if (newname != NULL) {
95: if (!session_check_name(newname)) {
1.48 nicm 96: cmdq_error(cmdq, "bad session name: %s", newname);
1.45 nicm 97: return (CMD_RETURN_ERROR);
1.38 nicm 98: }
1.81 nicm 99: if ((attach_sess = session_find(newname)) != NULL) {
1.49 nicm 100: if (args_has(args, 'A')) {
1.81 nicm 101: /*
102: * This cmdq is now destined for
103: * attach-session. Because attach-session
104: * will have already been prepared, copy this
105: * session into its tflag so it can be used.
106: */
107: cmdq->state.tflag.s = attach_sess;
108: return (cmd_attach_session(cmdq,
1.68 nicm 109: args_has(args, 'D'), 0, NULL,
110: args_has(args, 'E')));
1.49 nicm 111: }
1.48 nicm 112: cmdq_error(cmdq, "duplicate session: %s", newname);
1.45 nicm 113: return (CMD_RETURN_ERROR);
1.38 nicm 114: }
1.4 nicm 115: }
1.1 nicm 116:
1.81 nicm 117: if ((target = args_get(args, 't')) == NULL)
1.34 nicm 118: groupwith = NULL;
1.21 nicm 119:
1.6 nicm 120: /* Set -d if no client. */
1.34 nicm 121: detached = args_has(args, 'd');
1.48 nicm 122: if (c == NULL)
1.6 nicm 123: detached = 1;
124:
1.48 nicm 125: /* Is this client already attached? */
126: already_attached = 0;
127: if (c != NULL && c->session != NULL)
128: already_attached = 1;
129:
1.54 nicm 130: /* Get the new session working directory. */
1.76 nicm 131: to_free = NULL;
1.54 nicm 132: if (args_has(args, 'c')) {
1.79 nicm 133: ft = format_create(cmdq, 0);
1.81 nicm 134: format_defaults(ft, c, NULL, NULL, NULL);
1.76 nicm 135: to_free = cwd = format_expand(ft, args_get(args, 'c'));
1.54 nicm 136: format_free(ft);
1.55 nicm 137: } else if (c != NULL && c->session == NULL)
1.54 nicm 138: cwd = c->cwd;
1.76 nicm 139: else
140: cwd = ".";
1.54 nicm 141:
1.15 nicm 142: /*
1.67 nicm 143: * If this is a new client, check for nesting and save the termios
144: * settings (part of which is used for new windows in this session).
1.15 nicm 145: *
1.67 nicm 146: * tcgetattr() is used rather than using tty.tio since if the client is
147: * detached, tty_open won't be called. It must be done before opening
148: * the terminal as that calls tcsetattr() to prepare for tmux taking
149: * over.
1.15 nicm 150: */
1.48 nicm 151: if (!detached && !already_attached && c->tty.fd != -1) {
1.67 nicm 152: if (server_client_check_nested(cmdq->client)) {
153: cmdq_error(cmdq, "sessions should be nested with care, "
154: "unset $TMUX to force");
155: return (CMD_RETURN_ERROR);
156: }
1.48 nicm 157: if (tcgetattr(c->tty.fd, &tio) != 0)
1.15 nicm 158: fatal("tcgetattr failed");
1.19 nicm 159: tiop = &tio;
1.15 nicm 160: } else
1.19 nicm 161: tiop = NULL;
1.15 nicm 162:
1.4 nicm 163: /* Open the terminal if necessary. */
1.48 nicm 164: if (!detached && !already_attached) {
1.57 nicm 165: if (server_client_open(c, &cause) != 0) {
1.48 nicm 166: cmdq_error(cmdq, "open terminal failed: %s", cause);
1.44 nicm 167: free(cause);
1.54 nicm 168: goto error;
1.1 nicm 169: }
170: }
171:
1.16 nicm 172: /* Find new session size. */
1.48 nicm 173: if (c != NULL) {
174: sx = c->tty.sx;
175: sy = c->tty.sy;
1.39 nicm 176: } else {
1.4 nicm 177: sx = 80;
1.18 nicm 178: sy = 24;
1.39 nicm 179: }
1.48 nicm 180: if (detached && args_has(args, 'x')) {
181: sx = strtonum(args_get(args, 'x'), 1, USHRT_MAX, &errstr);
182: if (errstr != NULL) {
183: cmdq_error(cmdq, "width %s", errstr);
1.54 nicm 184: goto error;
1.35 nicm 185: }
1.48 nicm 186: }
187: if (detached && args_has(args, 'y')) {
188: sy = strtonum(args_get(args, 'y'), 1, USHRT_MAX, &errstr);
189: if (errstr != NULL) {
190: cmdq_error(cmdq, "height %s", errstr);
1.54 nicm 191: goto error;
1.35 nicm 192: }
1.1 nicm 193: }
1.74 nicm 194: if (sy > 0 && options_get_number(global_s_options, "status"))
1.4 nicm 195: sy--;
196: if (sx == 0)
197: sx = 1;
198: if (sy == 0)
199: sy = 1;
1.16 nicm 200:
201: /* Figure out the command for the new window. */
1.60 nicm 202: argc = -1;
203: argv = NULL;
1.81 nicm 204: if (!args_has(args, 't') && args->argc != 0) {
1.60 nicm 205: argc = args->argc;
206: argv = args->argv;
207: } else if (target == NULL) {
1.74 nicm 208: cmd = options_get_string(global_s_options, "default-command");
1.60 nicm 209: if (cmd != NULL && *cmd != '\0') {
210: argc = 1;
211: argv = &cmd;
212: } else {
213: argc = 0;
214: argv = NULL;
215: }
216: }
1.1 nicm 217:
1.59 nicm 218: path = NULL;
219: if (c != NULL && c->session == NULL)
1.75 nicm 220: envent = environ_find(c->environ, "PATH");
1.59 nicm 221: else
1.75 nicm 222: envent = environ_find(global_environ, "PATH");
1.59 nicm 223: if (envent != NULL)
224: path = envent->value;
225:
1.10 nicm 226: /* Construct the environment. */
1.75 nicm 227: env = environ_create();
1.68 nicm 228: if (c != NULL && !args_has(args, 'E')) {
1.74 nicm 229: update = options_get_string(global_s_options,
1.68 nicm 230: "update-environment");
1.75 nicm 231: environ_update(update, c->environ, env);
1.68 nicm 232: }
1.11 nicm 233:
1.4 nicm 234: /* Create the new session. */
1.74 nicm 235: idx = -1 - options_get_number(global_s_options, "base-index");
1.75 nicm 236: s = session_create(newname, argc, argv, path, cwd, env, tiop, idx, sx,
1.60 nicm 237: sy, &cause);
1.75 nicm 238: environ_free(env);
1.1 nicm 239: if (s == NULL) {
1.48 nicm 240: cmdq_error(cmdq, "create session failed: %s", cause);
1.44 nicm 241: free(cause);
1.54 nicm 242: goto error;
1.1 nicm 243: }
1.4 nicm 244:
1.16 nicm 245: /* Set the initial window name if one given. */
1.60 nicm 246: if (argc >= 0 && args_has(args, 'n')) {
1.16 nicm 247: w = s->curw->window;
1.40 nicm 248: window_set_name(w, args_get(args, 'n'));
1.74 nicm 249: options_set_number(w->options, "automatic-rename", 0);
1.21 nicm 250: }
251:
252: /*
253: * If a target session is given, this is to be part of a session group,
254: * so add it to the group and synchronize.
255: */
1.81 nicm 256: if (args_has(args, 't')) {
1.21 nicm 257: session_group_add(groupwith, s);
258: session_group_synchronize_to(s);
1.66 nicm 259: session_select(s, RB_MIN(winlinks, &s->windows)->idx);
1.1 nicm 260: }
261:
1.16 nicm 262: /*
263: * Set the client to the new session. If a command client exists, it is
264: * taking this session and needs to get MSG_READY and stay around.
1.4 nicm 265: */
1.25 nicm 266: if (!detached) {
1.73 nicm 267: if (!already_attached) {
268: if (~c->flags & CLIENT_CONTROL)
269: proc_send(c->peer, MSG_READY, -1, NULL, 0);
270: } else if (c->session != NULL)
1.48 nicm 271: c->last_session = c->session;
272: c->session = s;
1.80 nicm 273: server_client_set_key_table(c, NULL);
1.69 nicm 274: status_timer_start(c);
1.48 nicm 275: notify_attached_session_changed(c);
1.70 nicm 276: session_update_activity(s, NULL);
1.71 nicm 277: gettimeofday(&s->last_attached_time, NULL);
1.48 nicm 278: server_redraw_client(c);
1.1 nicm 279: }
280: recalculate_sizes();
1.22 nicm 281: server_update_socket();
1.26 nicm 282:
283: /*
284: * If there are still configuration file errors to display, put the new
285: * session's current window into more mode and display them now.
286: */
1.46 nicm 287: if (cfg_finished)
1.48 nicm 288: cfg_show_causes(s);
1.50 nicm 289:
290: /* Print if requested. */
291: if (args_has(args, 'P')) {
292: if ((template = args_get(args, 'F')) == NULL)
293: template = NEW_SESSION_TEMPLATE;
294:
1.79 nicm 295: ft = format_create(cmdq, 0);
1.81 nicm 296: format_defaults(ft, c, s, NULL, 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:
1.76 nicm 308: if (to_free != NULL)
309: free((void *)to_free);
1.48 nicm 310: return (CMD_RETURN_NORMAL);
1.54 nicm 311:
312: error:
1.76 nicm 313: if (to_free != NULL)
314: free((void *)to_free);
1.54 nicm 315: return (CMD_RETURN_ERROR);
1.1 nicm 316: }
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