Annotation of src/usr.bin/tmux/cmd-new-session.c, Revision 1.125
1.125 ! nicm 1: /* $OpenBSD: cmd-new-session.c,v 1.124 2020/04/09 13:57:18 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:
1.120 nicm 42: .args = { "Ac:dDEF:n:Ps:t:x:Xy:", 0, -1 },
43: .usage = "[-AdDEPX] [-c start-directory] [-F format] [-n window-name] "
1.82 nicm 44: "[-s session-name] " CMD_TARGET_SESSION_USAGE " [-x width] "
45: "[-y height] [command]",
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);
1.92 nicm 70: struct client *c = item->client;
1.101 nicm 71: struct session *s, *as, *groupwith;
1.75 nicm 72: struct environ *env;
1.114 nicm 73: struct options *oo;
1.50 nicm 74: struct termios tio, *tiop;
1.101 nicm 75: struct session_group *sg;
1.116 nicm 76: const char *errstr, *template, *group, *prefix, *tmp;
77: char *cause, *cwd = NULL, *cp, *newname = NULL;
78: int detached, already_attached, is_control = 0;
79: u_int sx, sy, dsx, dsy;
80: struct spawn_context sc;
1.110 nicm 81: enum cmd_retval retval;
1.116 nicm 82: struct cmd_find_state fs;
1.62 nicm 83:
1.125 ! nicm 84: if (cmd_get_entry(self) == &cmd_has_session_entry) {
1.81 nicm 85: /*
1.106 nicm 86: * cmd_find_target() will fail if the session cannot be found,
87: * so always return success here.
1.81 nicm 88: */
1.62 nicm 89: return (CMD_RETURN_NORMAL);
90: }
1.51 nicm 91:
92: if (args_has(args, 't') && (args->argc != 0 || args_has(args, 'n'))) {
1.92 nicm 93: cmdq_error(item, "command or window name given with target");
1.51 nicm 94: return (CMD_RETURN_ERROR);
95: }
1.34 nicm 96:
1.122 nicm 97: tmp = args_get(args, 's');
98: if (tmp != NULL) {
99: newname = format_single(item, tmp, c, NULL, NULL, NULL);
1.38 nicm 100: if (!session_check_name(newname)) {
1.92 nicm 101: cmdq_error(item, "bad session name: %s", newname);
1.116 nicm 102: goto fail;
1.38 nicm 103: }
1.122 nicm 104: }
105: if (args_has(args, 'A')) {
106: if (newname != NULL)
107: as = session_find(newname);
108: else
109: as = item->target.s;
110: if (as != NULL) {
111: retval = cmd_attach_session(item, as->name,
112: args_has(args, 'D'), args_has(args, 'X'), 0, NULL,
113: args_has(args, 'E'));
114: free(newname);
115: return (retval);
1.38 nicm 116: }
1.122 nicm 117: }
118: if (newname != NULL && session_find(newname) != NULL) {
119: cmdq_error(item, "duplicate session: %s", newname);
120: goto fail;
1.4 nicm 121: }
1.1 nicm 122:
1.101 nicm 123: /* Is this going to be part of a session group? */
124: group = args_get(args, 't');
125: if (group != NULL) {
1.105 nicm 126: groupwith = item->target.s;
1.85 nicm 127: if (groupwith == NULL) {
1.101 nicm 128: if (!session_check_name(group)) {
129: cmdq_error(item, "bad group name: %s", group);
1.116 nicm 130: goto fail;
1.101 nicm 131: }
132: sg = session_group_find(group);
133: } else
134: sg = session_group_contains(groupwith);
135: if (sg != NULL)
136: prefix = sg->name;
137: else if (groupwith != NULL)
138: prefix = groupwith->name;
139: else
140: prefix = group;
141: } else {
1.34 nicm 142: groupwith = NULL;
1.101 nicm 143: sg = NULL;
144: prefix = NULL;
145: }
1.21 nicm 146:
1.6 nicm 147: /* Set -d if no client. */
1.34 nicm 148: detached = args_has(args, 'd');
1.48 nicm 149: if (c == NULL)
1.6 nicm 150: detached = 1;
1.107 nicm 151: else if (c->flags & CLIENT_CONTROL)
152: is_control = 1;
1.6 nicm 153:
1.48 nicm 154: /* Is this client already attached? */
155: already_attached = 0;
156: if (c != NULL && c->session != NULL)
157: already_attached = 1;
158:
1.54 nicm 159: /* Get the new session working directory. */
1.110 nicm 160: if ((tmp = args_get(args, 'c')) != NULL)
161: cwd = format_single(item, tmp, c, NULL, NULL, NULL);
1.76 nicm 162: else
1.111 nicm 163: cwd = xstrdup(server_client_get_cwd(c, NULL));
1.54 nicm 164:
1.15 nicm 165: /*
1.67 nicm 166: * If this is a new client, check for nesting and save the termios
167: * settings (part of which is used for new windows in this session).
1.15 nicm 168: *
1.67 nicm 169: * tcgetattr() is used rather than using tty.tio since if the client is
170: * detached, tty_open won't be called. It must be done before opening
171: * the terminal as that calls tcsetattr() to prepare for tmux taking
172: * over.
1.15 nicm 173: */
1.48 nicm 174: if (!detached && !already_attached && c->tty.fd != -1) {
1.92 nicm 175: if (server_client_check_nested(item->client)) {
176: cmdq_error(item, "sessions should be nested with care, "
1.67 nicm 177: "unset $TMUX to force");
1.116 nicm 178: goto fail;
1.67 nicm 179: }
1.48 nicm 180: if (tcgetattr(c->tty.fd, &tio) != 0)
1.15 nicm 181: fatal("tcgetattr failed");
1.19 nicm 182: tiop = &tio;
1.15 nicm 183: } else
1.19 nicm 184: tiop = NULL;
1.15 nicm 185:
1.4 nicm 186: /* Open the terminal if necessary. */
1.48 nicm 187: if (!detached && !already_attached) {
1.57 nicm 188: if (server_client_open(c, &cause) != 0) {
1.92 nicm 189: cmdq_error(item, "open terminal failed: %s", cause);
1.44 nicm 190: free(cause);
1.116 nicm 191: goto fail;
1.1 nicm 192: }
193: }
194:
1.114 nicm 195: /* Get default session size. */
196: if (args_has(args, 'x')) {
1.112 nicm 197: tmp = args_get(args, 'x');
1.113 nicm 198: if (strcmp(tmp, "-") == 0) {
199: if (c != NULL)
1.114 nicm 200: dsx = c->tty.sx;
1.118 nicm 201: else
202: dsx = 80;
1.113 nicm 203: } else {
1.114 nicm 204: dsx = strtonum(tmp, 1, USHRT_MAX, &errstr);
1.112 nicm 205: if (errstr != NULL) {
206: cmdq_error(item, "width %s", errstr);
1.116 nicm 207: goto fail;
1.112 nicm 208: }
1.35 nicm 209: }
1.124 nicm 210: } else
211: dsx = 80;
1.114 nicm 212: if (args_has(args, 'y')) {
1.112 nicm 213: tmp = args_get(args, 'y');
1.113 nicm 214: if (strcmp(tmp, "-") == 0) {
215: if (c != NULL)
1.114 nicm 216: dsy = c->tty.sy;
1.118 nicm 217: else
218: dsy = 24;
1.113 nicm 219: } else {
1.114 nicm 220: dsy = strtonum(tmp, 1, USHRT_MAX, &errstr);
1.112 nicm 221: if (errstr != NULL) {
222: cmdq_error(item, "height %s", errstr);
1.116 nicm 223: goto fail;
1.112 nicm 224: }
1.35 nicm 225: }
1.124 nicm 226: } else
227: dsy = 24;
1.114 nicm 228:
229: /* Find new session size. */
230: if (!detached && !is_control) {
231: sx = c->tty.sx;
232: sy = c->tty.sy;
1.115 nicm 233: if (sy > 0 && options_get_number(global_s_options, "status"))
1.114 nicm 234: sy--;
235: } else {
1.116 nicm 236: tmp = options_get_string(global_s_options, "default-size");
237: if (sscanf(tmp, "%ux%u", &sx, &sy) != 2) {
1.114 nicm 238: sx = dsx;
239: sy = dsy;
1.124 nicm 240: } else {
241: if (args_has(args, 'x'))
242: sx = dsx;
243: if (args_has(args, 'y'))
244: sy = dsy;
245: }
1.114 nicm 246: }
1.4 nicm 247: if (sx == 0)
248: sx = 1;
249: if (sy == 0)
250: sy = 1;
1.16 nicm 251:
1.116 nicm 252: /* Create the new session. */
253: oo = options_create(global_s_options);
1.119 nicm 254: if (args_has(args, 'x') || args_has(args, 'y')) {
255: if (!args_has(args, 'x'))
256: dsx = sx;
257: if (!args_has(args, 'y'))
258: dsy = sy;
1.116 nicm 259: options_set_string(oo, "default-size", 0, "%ux%u", dsx, dsy);
1.119 nicm 260: }
1.75 nicm 261: env = environ_create();
1.97 nicm 262: if (c != NULL && !args_has(args, 'E'))
263: environ_update(global_s_options, c->environ, env);
1.116 nicm 264: s = session_create(prefix, newname, cwd, env, oo, tiop);
1.11 nicm 265:
1.116 nicm 266: /* Spawn the initial window. */
267: memset(&sc, 0, sizeof sc);
268: sc.item = item;
269: sc.s = s;
1.121 nicm 270: sc.c = c;
1.116 nicm 271:
272: sc.name = args_get(args, 'n');
273: sc.argc = args->argc;
274: sc.argv = args->argv;
275:
276: sc.idx = -1;
277: sc.cwd = args_get(args, 'c');
278:
279: sc.flags = 0;
1.114 nicm 280:
1.116 nicm 281: if (spawn_window(&sc, &cause) == NULL) {
282: session_destroy(s, 0, __func__);
283: cmdq_error(item, "create window failed: %s", cause);
1.44 nicm 284: free(cause);
1.116 nicm 285: goto fail;
1.21 nicm 286: }
287:
288: /*
289: * If a target session is given, this is to be part of a session group,
290: * so add it to the group and synchronize.
291: */
1.101 nicm 292: if (group != NULL) {
293: if (sg == NULL) {
294: if (groupwith != NULL) {
295: sg = session_group_new(groupwith->name);
296: session_group_add(sg, groupwith);
297: } else
298: sg = session_group_new(group);
299: }
300: session_group_add(sg, s);
1.21 nicm 301: session_group_synchronize_to(s);
1.66 nicm 302: session_select(s, RB_MIN(winlinks, &s->windows)->idx);
1.1 nicm 303: }
1.94 nicm 304: notify_session("session-created", s);
1.1 nicm 305:
1.16 nicm 306: /*
307: * Set the client to the new session. If a command client exists, it is
308: * taking this session and needs to get MSG_READY and stay around.
1.4 nicm 309: */
1.25 nicm 310: if (!detached) {
1.73 nicm 311: if (!already_attached) {
312: if (~c->flags & CLIENT_CONTROL)
313: proc_send(c->peer, MSG_READY, -1, NULL, 0);
314: } else if (c->session != NULL)
1.48 nicm 315: c->last_session = c->session;
316: c->session = s;
1.103 nicm 317: if (~item->shared->flags & CMDQ_SHARED_REPEAT)
1.100 nicm 318: server_client_set_key_table(c, NULL);
1.114 nicm 319: tty_update_client_offset(c);
1.69 nicm 320: status_timer_start(c);
1.93 nicm 321: notify_client("client-session-changed", c);
1.70 nicm 322: session_update_activity(s, NULL);
1.71 nicm 323: gettimeofday(&s->last_attached_time, NULL);
1.48 nicm 324: server_redraw_client(c);
1.1 nicm 325: }
326: recalculate_sizes();
1.22 nicm 327: server_update_socket();
1.26 nicm 328:
329: /*
330: * If there are still configuration file errors to display, put the new
331: * session's current window into more mode and display them now.
332: */
1.46 nicm 333: if (cfg_finished)
1.48 nicm 334: cfg_show_causes(s);
1.50 nicm 335:
336: /* Print if requested. */
337: if (args_has(args, 'P')) {
338: if ((template = args_get(args, 'F')) == NULL)
339: template = NEW_SESSION_TEMPLATE;
1.123 nicm 340: cp = format_single(item, template, c, s, s->curw, NULL);
1.92 nicm 341: cmdq_print(item, "%s", cp);
1.50 nicm 342: free(cp);
343: }
1.89 nicm 344:
1.104 nicm 345: if (!detached) {
1.91 nicm 346: c->flags |= CLIENT_ATTACHED;
1.109 nicm 347: cmd_find_from_session(&item->shared->current, s, 0);
1.104 nicm 348: }
1.54 nicm 349:
1.109 nicm 350: cmd_find_from_session(&fs, s, 0);
1.117 nicm 351: cmdq_insert_hook(s, item, &fs, "after-new-session");
1.91 nicm 352:
1.110 nicm 353: free(cwd);
354: free(newname);
1.48 nicm 355: return (CMD_RETURN_NORMAL);
1.54 nicm 356:
1.116 nicm 357: fail:
1.110 nicm 358: free(cwd);
359: free(newname);
1.54 nicm 360: return (CMD_RETURN_ERROR);
1.1 nicm 361: }
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