Annotation of src/usr.bin/tmux/cmd-new-session.c, Revision 1.101
1.101 ! nicm 1: /* $OpenBSD: cmd-new-session.c,v 1.100 2017/02/06 15:00:41 nicm Exp $ */
1.1 nicm 2:
3: /*
1.84 nicm 4: * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1 nicm 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:
1.92 nicm 36: static enum cmd_retval cmd_new_session_exec(struct cmd *, struct cmdq_item *);
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:
1.83 nicm 47: .tflag = CMD_SESSION_CANFAIL,
48:
49: .flags = CMD_STARTSERVER,
1.82 nicm 50: .exec = cmd_new_session_exec
1.1 nicm 51: };
52:
1.62 nicm 53: const struct cmd_entry cmd_has_session_entry = {
1.82 nicm 54: .name = "has-session",
55: .alias = "has",
56:
57: .args = { "t:", 0, 0 },
58: .usage = CMD_TARGET_SESSION_USAGE,
59:
1.83 nicm 60: .tflag = CMD_SESSION,
61:
62: .flags = 0,
1.82 nicm 63: .exec = cmd_new_session_exec
1.62 nicm 64: };
65:
1.88 nicm 66: static enum cmd_retval
1.92 nicm 67: cmd_new_session_exec(struct cmd *self, struct cmdq_item *item)
1.1 nicm 68: {
1.50 nicm 69: struct args *args = self->args;
1.92 nicm 70: struct client *c = item->client;
1.101 ! nicm 71: struct session *s, *as, *groupwith;
1.50 nicm 72: struct window *w;
1.75 nicm 73: struct environ *env;
1.50 nicm 74: struct termios tio, *tiop;
1.101 ! nicm 75: struct session_group *sg;
! 76: const char *newname, *errstr, *template, *group, *prefix;
1.96 nicm 77: const char *path, *cmd, *cwd, *to_free = NULL;
78: char **argv, *cause, *cp;
1.76 nicm 79: int detached, already_attached, idx, argc;
1.50 nicm 80: u_int sx, sy;
81: struct format_tree *ft;
1.59 nicm 82: struct environ_entry *envent;
1.90 nicm 83: struct cmd_find_state fs;
1.62 nicm 84:
85: if (self->entry == &cmd_has_session_entry) {
1.81 nicm 86: /*
87: * cmd_prepare() will fail if the session cannot be found,
88: * hence always return success here.
89: */
1.62 nicm 90: return (CMD_RETURN_NORMAL);
91: }
1.51 nicm 92:
93: if (args_has(args, 't') && (args->argc != 0 || args_has(args, 'n'))) {
1.92 nicm 94: cmdq_error(item, "command or window name given with target");
1.51 nicm 95: return (CMD_RETURN_ERROR);
96: }
1.34 nicm 97:
98: newname = args_get(args, 's');
1.38 nicm 99: if (newname != NULL) {
100: if (!session_check_name(newname)) {
1.92 nicm 101: cmdq_error(item, "bad session name: %s", newname);
1.45 nicm 102: return (CMD_RETURN_ERROR);
1.38 nicm 103: }
1.86 nicm 104: if ((as = session_find(newname)) != NULL) {
1.49 nicm 105: if (args_has(args, 'A')) {
1.81 nicm 106: /*
1.92 nicm 107: * This item is now destined for
1.95 nicm 108: * attach-session. Because attach-session will
109: * have already been prepared, copy this
1.81 nicm 110: * session into its tflag so it can be used.
111: */
1.92 nicm 112: cmd_find_from_session(&item->state.tflag, as);
113: return (cmd_attach_session(item,
1.68 nicm 114: args_has(args, 'D'), 0, NULL,
115: args_has(args, 'E')));
1.49 nicm 116: }
1.92 nicm 117: cmdq_error(item, "duplicate session: %s", newname);
1.45 nicm 118: return (CMD_RETURN_ERROR);
1.38 nicm 119: }
1.4 nicm 120: }
1.1 nicm 121:
1.101 ! nicm 122: /* Is this going to be part of a session group? */
! 123: group = args_get(args, 't');
! 124: if (group != NULL) {
! 125: groupwith = item->state.tflag.s;
1.85 nicm 126: if (groupwith == NULL) {
1.101 ! nicm 127: if (!session_check_name(group)) {
! 128: cmdq_error(item, "bad group name: %s", group);
! 129: goto error;
! 130: }
! 131: sg = session_group_find(group);
! 132: } else
! 133: sg = session_group_contains(groupwith);
! 134: if (sg != NULL)
! 135: prefix = sg->name;
! 136: else if (groupwith != NULL)
! 137: prefix = groupwith->name;
! 138: else
! 139: prefix = group;
! 140: } else {
1.34 nicm 141: groupwith = NULL;
1.101 ! nicm 142: sg = NULL;
! 143: prefix = NULL;
! 144: }
1.21 nicm 145:
1.6 nicm 146: /* Set -d if no client. */
1.34 nicm 147: detached = args_has(args, 'd');
1.48 nicm 148: if (c == NULL)
1.6 nicm 149: detached = 1;
150:
1.48 nicm 151: /* Is this client already attached? */
152: already_attached = 0;
153: if (c != NULL && c->session != NULL)
154: already_attached = 1;
155:
1.54 nicm 156: /* Get the new session working directory. */
157: if (args_has(args, 'c')) {
1.99 nicm 158: ft = format_create(item, FORMAT_NONE, 0);
1.81 nicm 159: format_defaults(ft, c, NULL, NULL, NULL);
1.76 nicm 160: to_free = cwd = format_expand(ft, args_get(args, 'c'));
1.54 nicm 161: format_free(ft);
1.87 nicm 162: } else if (c != NULL && c->session == NULL && c->cwd != NULL)
1.54 nicm 163: cwd = c->cwd;
1.76 nicm 164: else
165: cwd = ".";
1.54 nicm 166:
1.15 nicm 167: /*
1.67 nicm 168: * If this is a new client, check for nesting and save the termios
169: * settings (part of which is used for new windows in this session).
1.15 nicm 170: *
1.67 nicm 171: * tcgetattr() is used rather than using tty.tio since if the client is
172: * detached, tty_open won't be called. It must be done before opening
173: * the terminal as that calls tcsetattr() to prepare for tmux taking
174: * over.
1.15 nicm 175: */
1.48 nicm 176: if (!detached && !already_attached && c->tty.fd != -1) {
1.92 nicm 177: if (server_client_check_nested(item->client)) {
178: cmdq_error(item, "sessions should be nested with care, "
1.67 nicm 179: "unset $TMUX to force");
180: return (CMD_RETURN_ERROR);
181: }
1.48 nicm 182: if (tcgetattr(c->tty.fd, &tio) != 0)
1.15 nicm 183: fatal("tcgetattr failed");
1.19 nicm 184: tiop = &tio;
1.15 nicm 185: } else
1.19 nicm 186: tiop = NULL;
1.15 nicm 187:
1.4 nicm 188: /* Open the terminal if necessary. */
1.48 nicm 189: if (!detached && !already_attached) {
1.57 nicm 190: if (server_client_open(c, &cause) != 0) {
1.92 nicm 191: cmdq_error(item, "open terminal failed: %s", cause);
1.44 nicm 192: free(cause);
1.54 nicm 193: goto error;
1.1 nicm 194: }
195: }
196:
1.16 nicm 197: /* Find new session size. */
1.48 nicm 198: if (c != NULL) {
199: sx = c->tty.sx;
200: sy = c->tty.sy;
1.39 nicm 201: } else {
1.4 nicm 202: sx = 80;
1.18 nicm 203: sy = 24;
1.39 nicm 204: }
1.48 nicm 205: if (detached && args_has(args, 'x')) {
206: sx = strtonum(args_get(args, 'x'), 1, USHRT_MAX, &errstr);
207: if (errstr != NULL) {
1.92 nicm 208: cmdq_error(item, "width %s", errstr);
1.54 nicm 209: goto error;
1.35 nicm 210: }
1.48 nicm 211: }
212: if (detached && args_has(args, 'y')) {
213: sy = strtonum(args_get(args, 'y'), 1, USHRT_MAX, &errstr);
214: if (errstr != NULL) {
1.92 nicm 215: cmdq_error(item, "height %s", errstr);
1.54 nicm 216: goto error;
1.35 nicm 217: }
1.1 nicm 218: }
1.74 nicm 219: if (sy > 0 && options_get_number(global_s_options, "status"))
1.4 nicm 220: sy--;
221: if (sx == 0)
222: sx = 1;
223: if (sy == 0)
224: sy = 1;
1.16 nicm 225:
226: /* Figure out the command for the new window. */
1.60 nicm 227: argc = -1;
228: argv = NULL;
1.81 nicm 229: if (!args_has(args, 't') && args->argc != 0) {
1.60 nicm 230: argc = args->argc;
231: argv = args->argv;
1.101 ! nicm 232: } else if (sg == NULL && groupwith == NULL) {
1.74 nicm 233: cmd = options_get_string(global_s_options, "default-command");
1.60 nicm 234: if (cmd != NULL && *cmd != '\0') {
235: argc = 1;
1.96 nicm 236: argv = (char **)&cmd;
1.60 nicm 237: } else {
238: argc = 0;
239: argv = NULL;
240: }
241: }
1.1 nicm 242:
1.59 nicm 243: path = NULL;
244: if (c != NULL && c->session == NULL)
1.75 nicm 245: envent = environ_find(c->environ, "PATH");
1.59 nicm 246: else
1.75 nicm 247: envent = environ_find(global_environ, "PATH");
1.59 nicm 248: if (envent != NULL)
249: path = envent->value;
250:
1.10 nicm 251: /* Construct the environment. */
1.75 nicm 252: env = environ_create();
1.97 nicm 253: if (c != NULL && !args_has(args, 'E'))
254: environ_update(global_s_options, c->environ, env);
1.11 nicm 255:
1.4 nicm 256: /* Create the new session. */
1.74 nicm 257: idx = -1 - options_get_number(global_s_options, "base-index");
1.101 ! nicm 258: s = session_create(prefix, newname, argc, argv, path, cwd, env, tiop,
! 259: idx, sx, sy, &cause);
1.75 nicm 260: environ_free(env);
1.1 nicm 261: if (s == NULL) {
1.92 nicm 262: cmdq_error(item, "create session failed: %s", cause);
1.44 nicm 263: free(cause);
1.54 nicm 264: goto error;
1.1 nicm 265: }
1.4 nicm 266:
1.16 nicm 267: /* Set the initial window name if one given. */
1.60 nicm 268: if (argc >= 0 && args_has(args, 'n')) {
1.16 nicm 269: w = s->curw->window;
1.40 nicm 270: window_set_name(w, args_get(args, 'n'));
1.74 nicm 271: options_set_number(w->options, "automatic-rename", 0);
1.21 nicm 272: }
273:
274: /*
275: * If a target session is given, this is to be part of a session group,
276: * so add it to the group and synchronize.
277: */
1.101 ! nicm 278: if (group != NULL) {
! 279: if (sg == NULL) {
! 280: if (groupwith != NULL) {
! 281: sg = session_group_new(groupwith->name);
! 282: session_group_add(sg, groupwith);
! 283: } else
! 284: sg = session_group_new(group);
! 285: }
! 286: session_group_add(sg, s);
1.21 nicm 287: session_group_synchronize_to(s);
1.66 nicm 288: session_select(s, RB_MIN(winlinks, &s->windows)->idx);
1.1 nicm 289: }
1.94 nicm 290: notify_session("session-created", s);
1.1 nicm 291:
1.16 nicm 292: /*
293: * Set the client to the new session. If a command client exists, it is
294: * taking this session and needs to get MSG_READY and stay around.
1.4 nicm 295: */
1.25 nicm 296: if (!detached) {
1.73 nicm 297: if (!already_attached) {
298: if (~c->flags & CLIENT_CONTROL)
299: proc_send(c->peer, MSG_READY, -1, NULL, 0);
300: } else if (c->session != NULL)
1.48 nicm 301: c->last_session = c->session;
302: c->session = s;
1.100 nicm 303: if (!item->repeat)
304: server_client_set_key_table(c, NULL);
1.69 nicm 305: status_timer_start(c);
1.93 nicm 306: notify_client("client-session-changed", c);
1.70 nicm 307: session_update_activity(s, NULL);
1.71 nicm 308: gettimeofday(&s->last_attached_time, NULL);
1.48 nicm 309: server_redraw_client(c);
1.1 nicm 310: }
311: recalculate_sizes();
1.22 nicm 312: server_update_socket();
1.26 nicm 313:
314: /*
315: * If there are still configuration file errors to display, put the new
316: * session's current window into more mode and display them now.
317: */
1.46 nicm 318: if (cfg_finished)
1.48 nicm 319: cfg_show_causes(s);
1.50 nicm 320:
321: /* Print if requested. */
322: if (args_has(args, 'P')) {
323: if ((template = args_get(args, 'F')) == NULL)
324: template = NEW_SESSION_TEMPLATE;
325:
1.99 nicm 326: ft = format_create(item, FORMAT_NONE, 0);
1.81 nicm 327: format_defaults(ft, c, s, NULL, NULL);
1.50 nicm 328:
329: cp = format_expand(ft, template);
1.92 nicm 330: cmdq_print(item, "%s", cp);
1.50 nicm 331: free(cp);
332:
333: format_free(ft);
334: }
1.89 nicm 335:
1.48 nicm 336: if (!detached)
1.91 nicm 337: c->flags |= CLIENT_ATTACHED;
1.54 nicm 338:
1.76 nicm 339: if (to_free != NULL)
340: free((void *)to_free);
1.90 nicm 341:
342: cmd_find_from_session(&fs, s);
1.92 nicm 343: hooks_insert(s->hooks, item, &fs, "after-new-session");
1.91 nicm 344:
1.48 nicm 345: return (CMD_RETURN_NORMAL);
1.54 nicm 346:
347: error:
1.76 nicm 348: if (to_free != NULL)
349: free((void *)to_free);
1.54 nicm 350: return (CMD_RETURN_ERROR);
1.1 nicm 351: }