Annotation of src/usr.bin/tmux/cmd-new-session.c, Revision 1.132
1.132 ! nicm 1: /* $OpenBSD: cmd-new-session.c,v 1.131 2020/05/16 14:49:50 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:
1.132 ! nicm 42: .args = { "Ac:dDe:EF:n:Ps:t:x:Xy:", 0, -1 },
! 43: .usage = "[-AdDEPX] [-c start-directory] [-e environment] [-F format] "
! 44: "[-n window-name] [-s session-name] "
! 45: CMD_TARGET_SESSION_USAGE " [-x width] [-y height] [command]",
1.82 nicm 46:
1.105 nicm 47: .target = { 't', CMD_FIND_SESSION, CMD_FIND_CANFAIL },
1.83 nicm 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:
1.105 nicm 60: .target = { 't', CMD_FIND_SESSION, 0 },
1.83 nicm 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: {
1.125 nicm 69: struct args *args = cmd_get_args(self);
1.128 nicm 70: struct cmd_find_state *current = cmdq_get_current(item);
1.126 nicm 71: struct cmd_find_state *target = cmdq_get_target(item);
72: struct client *c = cmdq_get_client(item);
1.131 nicm 73: struct session *s, *as, *groupwith = NULL;
1.75 nicm 74: struct environ *env;
1.114 nicm 75: struct options *oo;
1.50 nicm 76: struct termios tio, *tiop;
1.131 nicm 77: struct session_group *sg = NULL;
1.132 ! nicm 78: const char *errstr, *template, *group, *tmp, *add;
1.116 nicm 79: char *cause, *cwd = NULL, *cp, *newname = NULL;
1.131 nicm 80: char *name, *prefix = NULL;
1.116 nicm 81: int detached, already_attached, is_control = 0;
82: u_int sx, sy, dsx, dsy;
83: struct spawn_context sc;
1.110 nicm 84: enum cmd_retval retval;
1.116 nicm 85: struct cmd_find_state fs;
1.132 ! nicm 86: struct args_value *value;
1.62 nicm 87:
1.125 nicm 88: if (cmd_get_entry(self) == &cmd_has_session_entry) {
1.81 nicm 89: /*
1.106 nicm 90: * cmd_find_target() will fail if the session cannot be found,
91: * so always return success here.
1.81 nicm 92: */
1.62 nicm 93: return (CMD_RETURN_NORMAL);
94: }
1.51 nicm 95:
96: if (args_has(args, 't') && (args->argc != 0 || args_has(args, 'n'))) {
1.92 nicm 97: cmdq_error(item, "command or window name given with target");
1.51 nicm 98: return (CMD_RETURN_ERROR);
99: }
1.34 nicm 100:
1.122 nicm 101: tmp = args_get(args, 's');
102: if (tmp != NULL) {
1.131 nicm 103: name = format_single(item, tmp, c, NULL, NULL, NULL);
104: newname = session_check_name(name);
105: free(name);
1.122 nicm 106: }
107: if (args_has(args, 'A')) {
108: if (newname != NULL)
109: as = session_find(newname);
110: else
1.126 nicm 111: as = target->s;
1.122 nicm 112: if (as != NULL) {
113: retval = cmd_attach_session(item, as->name,
114: args_has(args, 'D'), args_has(args, 'X'), 0, NULL,
115: args_has(args, 'E'));
116: free(newname);
117: return (retval);
1.38 nicm 118: }
1.122 nicm 119: }
120: if (newname != NULL && session_find(newname) != NULL) {
121: cmdq_error(item, "duplicate session: %s", newname);
122: goto fail;
1.4 nicm 123: }
1.1 nicm 124:
1.101 nicm 125: /* Is this going to be part of a session group? */
126: group = args_get(args, 't');
127: if (group != NULL) {
1.126 nicm 128: groupwith = target->s;
1.131 nicm 129: if (groupwith == NULL)
1.101 nicm 130: sg = session_group_find(group);
1.131 nicm 131: else
1.101 nicm 132: sg = session_group_contains(groupwith);
133: if (sg != NULL)
1.131 nicm 134: prefix = xstrdup(sg->name);
1.101 nicm 135: else if (groupwith != NULL)
1.131 nicm 136: prefix = xstrdup(groupwith->name);
1.101 nicm 137: else
1.131 nicm 138: prefix = session_check_name(group);
1.101 nicm 139: }
1.21 nicm 140:
1.6 nicm 141: /* Set -d if no client. */
1.34 nicm 142: detached = args_has(args, 'd');
1.48 nicm 143: if (c == NULL)
1.6 nicm 144: detached = 1;
1.107 nicm 145: else if (c->flags & CLIENT_CONTROL)
146: is_control = 1;
1.6 nicm 147:
1.48 nicm 148: /* Is this client already attached? */
149: already_attached = 0;
150: if (c != NULL && c->session != NULL)
151: already_attached = 1;
152:
1.54 nicm 153: /* Get the new session working directory. */
1.110 nicm 154: if ((tmp = args_get(args, 'c')) != NULL)
155: cwd = format_single(item, tmp, c, NULL, NULL, NULL);
1.76 nicm 156: else
1.111 nicm 157: cwd = xstrdup(server_client_get_cwd(c, NULL));
1.54 nicm 158:
1.15 nicm 159: /*
1.67 nicm 160: * If this is a new client, check for nesting and save the termios
161: * settings (part of which is used for new windows in this session).
1.15 nicm 162: *
1.67 nicm 163: * tcgetattr() is used rather than using tty.tio since if the client is
164: * detached, tty_open won't be called. It must be done before opening
165: * the terminal as that calls tcsetattr() to prepare for tmux taking
166: * over.
1.15 nicm 167: */
1.48 nicm 168: if (!detached && !already_attached && c->tty.fd != -1) {
1.126 nicm 169: if (server_client_check_nested(cmdq_get_client(item))) {
1.92 nicm 170: cmdq_error(item, "sessions should be nested with care, "
1.67 nicm 171: "unset $TMUX to force");
1.116 nicm 172: goto fail;
1.67 nicm 173: }
1.48 nicm 174: if (tcgetattr(c->tty.fd, &tio) != 0)
1.15 nicm 175: fatal("tcgetattr failed");
1.19 nicm 176: tiop = &tio;
1.15 nicm 177: } else
1.19 nicm 178: tiop = NULL;
1.15 nicm 179:
1.4 nicm 180: /* Open the terminal if necessary. */
1.48 nicm 181: if (!detached && !already_attached) {
1.57 nicm 182: if (server_client_open(c, &cause) != 0) {
1.92 nicm 183: cmdq_error(item, "open terminal failed: %s", cause);
1.44 nicm 184: free(cause);
1.116 nicm 185: goto fail;
1.1 nicm 186: }
187: }
188:
1.114 nicm 189: /* Get default session size. */
190: if (args_has(args, 'x')) {
1.112 nicm 191: tmp = args_get(args, 'x');
1.113 nicm 192: if (strcmp(tmp, "-") == 0) {
193: if (c != NULL)
1.114 nicm 194: dsx = c->tty.sx;
1.118 nicm 195: else
196: dsx = 80;
1.113 nicm 197: } else {
1.114 nicm 198: dsx = strtonum(tmp, 1, USHRT_MAX, &errstr);
1.112 nicm 199: if (errstr != NULL) {
200: cmdq_error(item, "width %s", errstr);
1.116 nicm 201: goto fail;
1.112 nicm 202: }
1.35 nicm 203: }
1.124 nicm 204: } else
205: dsx = 80;
1.114 nicm 206: if (args_has(args, 'y')) {
1.112 nicm 207: tmp = args_get(args, 'y');
1.113 nicm 208: if (strcmp(tmp, "-") == 0) {
209: if (c != NULL)
1.114 nicm 210: dsy = c->tty.sy;
1.118 nicm 211: else
212: dsy = 24;
1.113 nicm 213: } else {
1.114 nicm 214: dsy = strtonum(tmp, 1, USHRT_MAX, &errstr);
1.112 nicm 215: if (errstr != NULL) {
216: cmdq_error(item, "height %s", errstr);
1.116 nicm 217: goto fail;
1.112 nicm 218: }
1.35 nicm 219: }
1.124 nicm 220: } else
221: dsy = 24;
1.114 nicm 222:
223: /* Find new session size. */
224: if (!detached && !is_control) {
225: sx = c->tty.sx;
226: sy = c->tty.sy;
1.115 nicm 227: if (sy > 0 && options_get_number(global_s_options, "status"))
1.114 nicm 228: sy--;
229: } else {
1.116 nicm 230: tmp = options_get_string(global_s_options, "default-size");
231: if (sscanf(tmp, "%ux%u", &sx, &sy) != 2) {
1.114 nicm 232: sx = dsx;
233: sy = dsy;
1.124 nicm 234: } else {
235: if (args_has(args, 'x'))
236: sx = dsx;
237: if (args_has(args, 'y'))
238: sy = dsy;
239: }
1.114 nicm 240: }
1.4 nicm 241: if (sx == 0)
242: sx = 1;
243: if (sy == 0)
244: sy = 1;
1.16 nicm 245:
1.116 nicm 246: /* Create the new session. */
247: oo = options_create(global_s_options);
1.119 nicm 248: if (args_has(args, 'x') || args_has(args, 'y')) {
249: if (!args_has(args, 'x'))
250: dsx = sx;
251: if (!args_has(args, 'y'))
252: dsy = sy;
1.116 nicm 253: options_set_string(oo, "default-size", 0, "%ux%u", dsx, dsy);
1.119 nicm 254: }
1.75 nicm 255: env = environ_create();
1.97 nicm 256: if (c != NULL && !args_has(args, 'E'))
257: environ_update(global_s_options, c->environ, env);
1.132 ! nicm 258: add = args_first_value(args, 'e', &value);
! 259: while (add != NULL) {
! 260: environ_put(env, add, 0);
! 261: add = args_next_value(&value);
! 262: }
1.116 nicm 263: s = session_create(prefix, newname, cwd, env, oo, tiop);
1.11 nicm 264:
1.116 nicm 265: /* Spawn the initial window. */
266: memset(&sc, 0, sizeof sc);
267: sc.item = item;
268: sc.s = s;
269:
270: sc.name = args_get(args, 'n');
271: sc.argc = args->argc;
272: sc.argv = args->argv;
273:
274: sc.idx = -1;
275: sc.cwd = args_get(args, 'c');
276:
277: sc.flags = 0;
1.114 nicm 278:
1.116 nicm 279: if (spawn_window(&sc, &cause) == NULL) {
280: session_destroy(s, 0, __func__);
281: cmdq_error(item, "create window failed: %s", cause);
1.44 nicm 282: free(cause);
1.116 nicm 283: goto fail;
1.21 nicm 284: }
285:
286: /*
287: * If a target session is given, this is to be part of a session group,
288: * so add it to the group and synchronize.
289: */
1.101 nicm 290: if (group != NULL) {
291: if (sg == NULL) {
292: if (groupwith != NULL) {
293: sg = session_group_new(groupwith->name);
294: session_group_add(sg, groupwith);
295: } else
296: sg = session_group_new(group);
297: }
298: session_group_add(sg, s);
1.21 nicm 299: session_group_synchronize_to(s);
1.66 nicm 300: session_select(s, RB_MIN(winlinks, &s->windows)->idx);
1.1 nicm 301: }
1.94 nicm 302: notify_session("session-created", s);
1.1 nicm 303:
1.16 nicm 304: /*
305: * Set the client to the new session. If a command client exists, it is
306: * taking this session and needs to get MSG_READY and stay around.
1.4 nicm 307: */
1.25 nicm 308: if (!detached) {
1.73 nicm 309: if (!already_attached) {
310: if (~c->flags & CLIENT_CONTROL)
311: proc_send(c->peer, MSG_READY, -1, NULL, 0);
312: } else if (c->session != NULL)
1.48 nicm 313: c->last_session = c->session;
314: c->session = s;
1.128 nicm 315: if (~cmdq_get_flags(item) & CMDQ_STATE_REPEAT)
1.100 nicm 316: server_client_set_key_table(c, NULL);
1.114 nicm 317: tty_update_client_offset(c);
1.69 nicm 318: status_timer_start(c);
1.93 nicm 319: notify_client("client-session-changed", c);
1.70 nicm 320: session_update_activity(s, NULL);
1.71 nicm 321: gettimeofday(&s->last_attached_time, NULL);
1.48 nicm 322: server_redraw_client(c);
1.1 nicm 323: }
324: recalculate_sizes();
1.22 nicm 325: server_update_socket();
1.26 nicm 326:
327: /*
328: * If there are still configuration file errors to display, put the new
329: * session's current window into more mode and display them now.
330: */
1.46 nicm 331: if (cfg_finished)
1.48 nicm 332: cfg_show_causes(s);
1.50 nicm 333:
334: /* Print if requested. */
335: if (args_has(args, 'P')) {
336: if ((template = args_get(args, 'F')) == NULL)
337: template = NEW_SESSION_TEMPLATE;
1.123 nicm 338: cp = format_single(item, template, c, s, s->curw, NULL);
1.92 nicm 339: cmdq_print(item, "%s", cp);
1.50 nicm 340: free(cp);
341: }
1.89 nicm 342:
1.129 nicm 343: if (!detached)
1.91 nicm 344: c->flags |= CLIENT_ATTACHED;
1.129 nicm 345: if (!args_has(args, 'd'))
1.126 nicm 346: cmd_find_from_session(current, s, 0);
1.54 nicm 347:
1.109 nicm 348: cmd_find_from_session(&fs, s, 0);
1.117 nicm 349: cmdq_insert_hook(s, item, &fs, "after-new-session");
1.91 nicm 350:
1.110 nicm 351: free(cwd);
352: free(newname);
1.131 nicm 353: free(prefix);
1.48 nicm 354: return (CMD_RETURN_NORMAL);
1.54 nicm 355:
1.116 nicm 356: fail:
1.110 nicm 357: free(cwd);
358: free(newname);
1.131 nicm 359: free(prefix);
1.54 nicm 360: return (CMD_RETURN_ERROR);
1.1 nicm 361: }
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