Annotation of src/usr.bin/tmux/cmd-new-session.c, Revision 1.141
1.141 ! nicm 1: /* $OpenBSD: cmd-new-session.c,v 1.140 2021/08/20 18:59:53 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:
1.133 nicm 42: .args = { "Ac:dDe:EF:f:n:Ps:t:x:Xy:", 0, -1 },
1.132 nicm 43: .usage = "[-AdDEPX] [-c start-directory] [-e environment] [-F format] "
1.133 nicm 44: "[-f flags] [-n window-name] [-s session-name] "
1.132 nicm 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;
1.140 nicm 78: const char *errstr, *template, *group, *tmp;
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;
1.141 ! nicm 82: u_int sx, sy, dsx, dsy, count = args_count(args);
! 83: struct spawn_context sc = { 0 };
1.110 nicm 84: enum cmd_retval retval;
1.116 nicm 85: struct cmd_find_state fs;
1.140 nicm 86: struct args_value *av;
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:
1.141 ! nicm 96: if (args_has(args, 't') && (count != 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);
1.137 nicm 105: if (newname == NULL) {
106: cmdq_error(item, "invalid session: %s", name);
107: free(name);
108: return (CMD_RETURN_ERROR);
109: }
1.131 nicm 110: free(name);
1.122 nicm 111: }
112: if (args_has(args, 'A')) {
113: if (newname != NULL)
114: as = session_find(newname);
115: else
1.126 nicm 116: as = target->s;
1.122 nicm 117: if (as != NULL) {
118: retval = cmd_attach_session(item, as->name,
119: args_has(args, 'D'), args_has(args, 'X'), 0, NULL,
1.133 nicm 120: args_has(args, 'E'), args_get(args, 'f'));
1.122 nicm 121: free(newname);
122: return (retval);
1.38 nicm 123: }
1.122 nicm 124: }
125: if (newname != NULL && session_find(newname) != NULL) {
126: cmdq_error(item, "duplicate session: %s", newname);
127: goto fail;
1.4 nicm 128: }
1.1 nicm 129:
1.101 nicm 130: /* Is this going to be part of a session group? */
131: group = args_get(args, 't');
132: if (group != NULL) {
1.126 nicm 133: groupwith = target->s;
1.131 nicm 134: if (groupwith == NULL)
1.101 nicm 135: sg = session_group_find(group);
1.131 nicm 136: else
1.101 nicm 137: sg = session_group_contains(groupwith);
138: if (sg != NULL)
1.131 nicm 139: prefix = xstrdup(sg->name);
1.101 nicm 140: else if (groupwith != NULL)
1.131 nicm 141: prefix = xstrdup(groupwith->name);
1.137 nicm 142: else {
1.131 nicm 143: prefix = session_check_name(group);
1.137 nicm 144: if (prefix == NULL) {
145: cmdq_error(item, "invalid session group: %s",
146: group);
147: goto fail;
148: }
149: }
1.101 nicm 150: }
1.21 nicm 151:
1.6 nicm 152: /* Set -d if no client. */
1.34 nicm 153: detached = args_has(args, 'd');
1.48 nicm 154: if (c == NULL)
1.6 nicm 155: detached = 1;
1.107 nicm 156: else if (c->flags & CLIENT_CONTROL)
157: is_control = 1;
1.6 nicm 158:
1.48 nicm 159: /* Is this client already attached? */
160: already_attached = 0;
161: if (c != NULL && c->session != NULL)
162: already_attached = 1;
163:
1.54 nicm 164: /* Get the new session working directory. */
1.110 nicm 165: if ((tmp = args_get(args, 'c')) != NULL)
166: cwd = format_single(item, tmp, c, NULL, NULL, NULL);
1.76 nicm 167: else
1.111 nicm 168: cwd = xstrdup(server_client_get_cwd(c, NULL));
1.54 nicm 169:
1.15 nicm 170: /*
1.67 nicm 171: * If this is a new client, check for nesting and save the termios
172: * settings (part of which is used for new windows in this session).
1.15 nicm 173: *
1.67 nicm 174: * tcgetattr() is used rather than using tty.tio since if the client is
175: * detached, tty_open won't be called. It must be done before opening
176: * the terminal as that calls tcsetattr() to prepare for tmux taking
177: * over.
1.15 nicm 178: */
1.135 nicm 179: if (!detached &&
180: !already_attached &&
181: c->fd != -1 &&
182: (~c->flags & CLIENT_CONTROL)) {
1.126 nicm 183: if (server_client_check_nested(cmdq_get_client(item))) {
1.92 nicm 184: cmdq_error(item, "sessions should be nested with care, "
1.67 nicm 185: "unset $TMUX to force");
1.116 nicm 186: goto fail;
1.67 nicm 187: }
1.134 nicm 188: if (tcgetattr(c->fd, &tio) != 0)
1.15 nicm 189: fatal("tcgetattr failed");
1.19 nicm 190: tiop = &tio;
1.15 nicm 191: } else
1.19 nicm 192: tiop = NULL;
1.15 nicm 193:
1.4 nicm 194: /* Open the terminal if necessary. */
1.48 nicm 195: if (!detached && !already_attached) {
1.57 nicm 196: if (server_client_open(c, &cause) != 0) {
1.92 nicm 197: cmdq_error(item, "open terminal failed: %s", cause);
1.44 nicm 198: free(cause);
1.116 nicm 199: goto fail;
1.1 nicm 200: }
201: }
202:
1.114 nicm 203: /* Get default session size. */
204: if (args_has(args, 'x')) {
1.112 nicm 205: tmp = args_get(args, 'x');
1.113 nicm 206: if (strcmp(tmp, "-") == 0) {
207: if (c != NULL)
1.114 nicm 208: dsx = c->tty.sx;
1.118 nicm 209: else
210: dsx = 80;
1.113 nicm 211: } else {
1.114 nicm 212: dsx = strtonum(tmp, 1, USHRT_MAX, &errstr);
1.112 nicm 213: if (errstr != NULL) {
214: cmdq_error(item, "width %s", errstr);
1.116 nicm 215: goto fail;
1.112 nicm 216: }
1.35 nicm 217: }
1.124 nicm 218: } else
219: dsx = 80;
1.114 nicm 220: if (args_has(args, 'y')) {
1.112 nicm 221: tmp = args_get(args, 'y');
1.113 nicm 222: if (strcmp(tmp, "-") == 0) {
223: if (c != NULL)
1.114 nicm 224: dsy = c->tty.sy;
1.118 nicm 225: else
226: dsy = 24;
1.113 nicm 227: } else {
1.114 nicm 228: dsy = strtonum(tmp, 1, USHRT_MAX, &errstr);
1.112 nicm 229: if (errstr != NULL) {
230: cmdq_error(item, "height %s", errstr);
1.116 nicm 231: goto fail;
1.112 nicm 232: }
1.35 nicm 233: }
1.124 nicm 234: } else
235: dsy = 24;
1.114 nicm 236:
237: /* Find new session size. */
238: if (!detached && !is_control) {
239: sx = c->tty.sx;
240: sy = c->tty.sy;
1.115 nicm 241: if (sy > 0 && options_get_number(global_s_options, "status"))
1.114 nicm 242: sy--;
243: } else {
1.116 nicm 244: tmp = options_get_string(global_s_options, "default-size");
245: if (sscanf(tmp, "%ux%u", &sx, &sy) != 2) {
1.114 nicm 246: sx = dsx;
247: sy = dsy;
1.124 nicm 248: } else {
249: if (args_has(args, 'x'))
250: sx = dsx;
251: if (args_has(args, 'y'))
252: sy = dsy;
253: }
1.114 nicm 254: }
1.4 nicm 255: if (sx == 0)
256: sx = 1;
257: if (sy == 0)
258: sy = 1;
1.16 nicm 259:
1.116 nicm 260: /* Create the new session. */
261: oo = options_create(global_s_options);
1.119 nicm 262: if (args_has(args, 'x') || args_has(args, 'y')) {
263: if (!args_has(args, 'x'))
264: dsx = sx;
265: if (!args_has(args, 'y'))
266: dsy = sy;
1.116 nicm 267: options_set_string(oo, "default-size", 0, "%ux%u", dsx, dsy);
1.119 nicm 268: }
1.75 nicm 269: env = environ_create();
1.97 nicm 270: if (c != NULL && !args_has(args, 'E'))
271: environ_update(global_s_options, c->environ, env);
1.140 nicm 272: av = args_first_value(args, 'e');
273: while (av != NULL) {
274: environ_put(env, av->value, 0);
275: av = args_next_value(av);
1.132 nicm 276: }
1.116 nicm 277: s = session_create(prefix, newname, cwd, env, oo, tiop);
1.11 nicm 278:
1.116 nicm 279: /* Spawn the initial window. */
280: sc.item = item;
281: sc.s = s;
1.138 nicm 282: if (!detached)
283: sc.tc = c;
1.116 nicm 284:
285: sc.name = args_get(args, 'n');
1.141 ! nicm 286: args_vector(args, &sc.argc, &sc.argv);
1.116 nicm 287:
288: sc.idx = -1;
289: sc.cwd = args_get(args, 'c');
290:
291: sc.flags = 0;
1.114 nicm 292:
1.116 nicm 293: if (spawn_window(&sc, &cause) == NULL) {
294: session_destroy(s, 0, __func__);
295: cmdq_error(item, "create window failed: %s", cause);
1.44 nicm 296: free(cause);
1.116 nicm 297: goto fail;
1.21 nicm 298: }
299:
300: /*
301: * If a target session is given, this is to be part of a session group,
302: * so add it to the group and synchronize.
303: */
1.101 nicm 304: if (group != NULL) {
305: if (sg == NULL) {
306: if (groupwith != NULL) {
307: sg = session_group_new(groupwith->name);
308: session_group_add(sg, groupwith);
309: } else
310: sg = session_group_new(group);
311: }
312: session_group_add(sg, s);
1.21 nicm 313: session_group_synchronize_to(s);
1.66 nicm 314: session_select(s, RB_MIN(winlinks, &s->windows)->idx);
1.1 nicm 315: }
1.94 nicm 316: notify_session("session-created", s);
1.1 nicm 317:
1.16 nicm 318: /*
319: * Set the client to the new session. If a command client exists, it is
320: * taking this session and needs to get MSG_READY and stay around.
1.4 nicm 321: */
1.25 nicm 322: if (!detached) {
1.133 nicm 323: if (args_has(args, 'f'))
324: server_client_set_flags(c, args_get(args, 'f'));
1.73 nicm 325: if (!already_attached) {
326: if (~c->flags & CLIENT_CONTROL)
327: proc_send(c->peer, MSG_READY, -1, NULL, 0);
328: } else if (c->session != NULL)
1.48 nicm 329: c->last_session = c->session;
1.139 nicm 330: server_client_set_session(c, s);
1.128 nicm 331: if (~cmdq_get_flags(item) & CMDQ_STATE_REPEAT)
1.100 nicm 332: server_client_set_key_table(c, NULL);
1.1 nicm 333: }
1.26 nicm 334:
335: /*
336: * If there are still configuration file errors to display, put the new
337: * session's current window into more mode and display them now.
338: */
1.46 nicm 339: if (cfg_finished)
1.48 nicm 340: cfg_show_causes(s);
1.50 nicm 341:
342: /* Print if requested. */
343: if (args_has(args, 'P')) {
344: if ((template = args_get(args, 'F')) == NULL)
345: template = NEW_SESSION_TEMPLATE;
1.123 nicm 346: cp = format_single(item, template, c, s, s->curw, NULL);
1.92 nicm 347: cmdq_print(item, "%s", cp);
1.50 nicm 348: free(cp);
349: }
1.89 nicm 350:
1.129 nicm 351: if (!detached)
1.91 nicm 352: c->flags |= CLIENT_ATTACHED;
1.129 nicm 353: if (!args_has(args, 'd'))
1.126 nicm 354: cmd_find_from_session(current, s, 0);
1.54 nicm 355:
1.109 nicm 356: cmd_find_from_session(&fs, s, 0);
1.117 nicm 357: cmdq_insert_hook(s, item, &fs, "after-new-session");
1.91 nicm 358:
1.141 ! nicm 359: if (sc.argv != NULL)
! 360: cmd_free_argv(sc.argc, sc.argv);
1.110 nicm 361: free(cwd);
362: free(newname);
1.131 nicm 363: free(prefix);
1.48 nicm 364: return (CMD_RETURN_NORMAL);
1.54 nicm 365:
1.116 nicm 366: fail:
1.141 ! nicm 367: if (sc.argv != NULL)
! 368: cmd_free_argv(sc.argc, sc.argv);
1.110 nicm 369: free(cwd);
370: free(newname);
1.131 nicm 371: free(prefix);
1.54 nicm 372: return (CMD_RETURN_ERROR);
1.1 nicm 373: }
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