Annotation of src/usr.bin/tmux/cmd-new-session.c, Revision 1.103
1.103 ! nicm 1: /* $OpenBSD: cmd-new-session.c,v 1.102 2017/03/08 13:36:12 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;
1.59 nicm 81: struct environ_entry *envent;
1.90 nicm 82: struct cmd_find_state fs;
1.62 nicm 83:
84: if (self->entry == &cmd_has_session_entry) {
1.81 nicm 85: /*
86: * cmd_prepare() will fail if the session cannot be found,
87: * hence always return success here.
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:
97: newname = args_get(args, 's');
1.38 nicm 98: if (newname != NULL) {
99: if (!session_check_name(newname)) {
1.92 nicm 100: cmdq_error(item, "bad session name: %s", newname);
1.45 nicm 101: return (CMD_RETURN_ERROR);
1.38 nicm 102: }
1.86 nicm 103: if ((as = session_find(newname)) != NULL) {
1.49 nicm 104: if (args_has(args, 'A')) {
1.81 nicm 105: /*
1.92 nicm 106: * This item is now destined for
1.95 nicm 107: * attach-session. Because attach-session will
108: * have already been prepared, copy this
1.81 nicm 109: * session into its tflag so it can be used.
110: */
1.92 nicm 111: cmd_find_from_session(&item->state.tflag, as);
112: return (cmd_attach_session(item,
1.68 nicm 113: args_has(args, 'D'), 0, NULL,
114: args_has(args, 'E')));
1.49 nicm 115: }
1.92 nicm 116: cmdq_error(item, "duplicate session: %s", newname);
1.45 nicm 117: return (CMD_RETURN_ERROR);
1.38 nicm 118: }
1.4 nicm 119: }
1.1 nicm 120:
1.101 nicm 121: /* Is this going to be part of a session group? */
122: group = args_get(args, 't');
123: if (group != NULL) {
124: groupwith = item->state.tflag.s;
1.85 nicm 125: if (groupwith == NULL) {
1.101 nicm 126: if (!session_check_name(group)) {
127: cmdq_error(item, "bad group name: %s", group);
128: goto error;
129: }
130: sg = session_group_find(group);
131: } else
132: sg = session_group_contains(groupwith);
133: if (sg != NULL)
134: prefix = sg->name;
135: else if (groupwith != NULL)
136: prefix = groupwith->name;
137: else
138: prefix = group;
139: } else {
1.34 nicm 140: groupwith = NULL;
1.101 nicm 141: sg = NULL;
142: prefix = NULL;
143: }
1.21 nicm 144:
1.6 nicm 145: /* Set -d if no client. */
1.34 nicm 146: detached = args_has(args, 'd');
1.48 nicm 147: if (c == NULL)
1.6 nicm 148: detached = 1;
149:
1.48 nicm 150: /* Is this client already attached? */
151: already_attached = 0;
152: if (c != NULL && c->session != NULL)
153: already_attached = 1;
154:
1.54 nicm 155: /* Get the new session working directory. */
156: if (args_has(args, 'c')) {
1.102 nicm 157: cwd = args_get(args, 'c');
158: to_free = cwd = format_single(item, cwd, c, NULL, NULL, NULL);
1.87 nicm 159: } else if (c != NULL && c->session == NULL && c->cwd != NULL)
1.54 nicm 160: cwd = c->cwd;
1.76 nicm 161: else
162: cwd = ".";
1.54 nicm 163:
1.15 nicm 164: /*
1.67 nicm 165: * If this is a new client, check for nesting and save the termios
166: * settings (part of which is used for new windows in this session).
1.15 nicm 167: *
1.67 nicm 168: * tcgetattr() is used rather than using tty.tio since if the client is
169: * detached, tty_open won't be called. It must be done before opening
170: * the terminal as that calls tcsetattr() to prepare for tmux taking
171: * over.
1.15 nicm 172: */
1.48 nicm 173: if (!detached && !already_attached && c->tty.fd != -1) {
1.92 nicm 174: if (server_client_check_nested(item->client)) {
175: cmdq_error(item, "sessions should be nested with care, "
1.67 nicm 176: "unset $TMUX to force");
177: return (CMD_RETURN_ERROR);
178: }
1.48 nicm 179: if (tcgetattr(c->tty.fd, &tio) != 0)
1.15 nicm 180: fatal("tcgetattr failed");
1.19 nicm 181: tiop = &tio;
1.15 nicm 182: } else
1.19 nicm 183: tiop = NULL;
1.15 nicm 184:
1.4 nicm 185: /* Open the terminal if necessary. */
1.48 nicm 186: if (!detached && !already_attached) {
1.57 nicm 187: if (server_client_open(c, &cause) != 0) {
1.92 nicm 188: cmdq_error(item, "open terminal failed: %s", cause);
1.44 nicm 189: free(cause);
1.54 nicm 190: goto error;
1.1 nicm 191: }
192: }
193:
1.16 nicm 194: /* Find new session size. */
1.48 nicm 195: if (c != NULL) {
196: sx = c->tty.sx;
197: sy = c->tty.sy;
1.39 nicm 198: } else {
1.4 nicm 199: sx = 80;
1.18 nicm 200: sy = 24;
1.39 nicm 201: }
1.48 nicm 202: if (detached && args_has(args, 'x')) {
203: sx = strtonum(args_get(args, 'x'), 1, USHRT_MAX, &errstr);
204: if (errstr != NULL) {
1.92 nicm 205: cmdq_error(item, "width %s", errstr);
1.54 nicm 206: goto error;
1.35 nicm 207: }
1.48 nicm 208: }
209: if (detached && args_has(args, 'y')) {
210: sy = strtonum(args_get(args, 'y'), 1, USHRT_MAX, &errstr);
211: if (errstr != NULL) {
1.92 nicm 212: cmdq_error(item, "height %s", errstr);
1.54 nicm 213: goto error;
1.35 nicm 214: }
1.1 nicm 215: }
1.74 nicm 216: if (sy > 0 && options_get_number(global_s_options, "status"))
1.4 nicm 217: sy--;
218: if (sx == 0)
219: sx = 1;
220: if (sy == 0)
221: sy = 1;
1.16 nicm 222:
223: /* Figure out the command for the new window. */
1.60 nicm 224: argc = -1;
225: argv = NULL;
1.81 nicm 226: if (!args_has(args, 't') && args->argc != 0) {
1.60 nicm 227: argc = args->argc;
228: argv = args->argv;
1.101 nicm 229: } else if (sg == NULL && groupwith == NULL) {
1.74 nicm 230: cmd = options_get_string(global_s_options, "default-command");
1.60 nicm 231: if (cmd != NULL && *cmd != '\0') {
232: argc = 1;
1.96 nicm 233: argv = (char **)&cmd;
1.60 nicm 234: } else {
235: argc = 0;
236: argv = NULL;
237: }
238: }
1.1 nicm 239:
1.59 nicm 240: path = NULL;
241: if (c != NULL && c->session == NULL)
1.75 nicm 242: envent = environ_find(c->environ, "PATH");
1.59 nicm 243: else
1.75 nicm 244: envent = environ_find(global_environ, "PATH");
1.59 nicm 245: if (envent != NULL)
246: path = envent->value;
247:
1.10 nicm 248: /* Construct the environment. */
1.75 nicm 249: env = environ_create();
1.97 nicm 250: if (c != NULL && !args_has(args, 'E'))
251: environ_update(global_s_options, c->environ, env);
1.11 nicm 252:
1.4 nicm 253: /* Create the new session. */
1.74 nicm 254: idx = -1 - options_get_number(global_s_options, "base-index");
1.101 nicm 255: s = session_create(prefix, newname, argc, argv, path, cwd, env, tiop,
256: idx, sx, sy, &cause);
1.75 nicm 257: environ_free(env);
1.1 nicm 258: if (s == NULL) {
1.92 nicm 259: cmdq_error(item, "create session failed: %s", cause);
1.44 nicm 260: free(cause);
1.54 nicm 261: goto error;
1.1 nicm 262: }
1.4 nicm 263:
1.16 nicm 264: /* Set the initial window name if one given. */
1.60 nicm 265: if (argc >= 0 && args_has(args, 'n')) {
1.16 nicm 266: w = s->curw->window;
1.40 nicm 267: window_set_name(w, args_get(args, 'n'));
1.74 nicm 268: options_set_number(w->options, "automatic-rename", 0);
1.21 nicm 269: }
270:
271: /*
272: * If a target session is given, this is to be part of a session group,
273: * so add it to the group and synchronize.
274: */
1.101 nicm 275: if (group != NULL) {
276: if (sg == NULL) {
277: if (groupwith != NULL) {
278: sg = session_group_new(groupwith->name);
279: session_group_add(sg, groupwith);
280: } else
281: sg = session_group_new(group);
282: }
283: session_group_add(sg, s);
1.21 nicm 284: session_group_synchronize_to(s);
1.66 nicm 285: session_select(s, RB_MIN(winlinks, &s->windows)->idx);
1.1 nicm 286: }
1.94 nicm 287: notify_session("session-created", s);
1.1 nicm 288:
1.16 nicm 289: /*
290: * Set the client to the new session. If a command client exists, it is
291: * taking this session and needs to get MSG_READY and stay around.
1.4 nicm 292: */
1.25 nicm 293: if (!detached) {
1.73 nicm 294: if (!already_attached) {
295: if (~c->flags & CLIENT_CONTROL)
296: proc_send(c->peer, MSG_READY, -1, NULL, 0);
297: } else if (c->session != NULL)
1.48 nicm 298: c->last_session = c->session;
299: c->session = s;
1.103 ! nicm 300: if (~item->shared->flags & CMDQ_SHARED_REPEAT)
1.100 nicm 301: server_client_set_key_table(c, NULL);
1.69 nicm 302: status_timer_start(c);
1.93 nicm 303: notify_client("client-session-changed", c);
1.70 nicm 304: session_update_activity(s, NULL);
1.71 nicm 305: gettimeofday(&s->last_attached_time, NULL);
1.48 nicm 306: server_redraw_client(c);
1.1 nicm 307: }
308: recalculate_sizes();
1.22 nicm 309: server_update_socket();
1.26 nicm 310:
311: /*
312: * If there are still configuration file errors to display, put the new
313: * session's current window into more mode and display them now.
314: */
1.46 nicm 315: if (cfg_finished)
1.48 nicm 316: cfg_show_causes(s);
1.50 nicm 317:
318: /* Print if requested. */
319: if (args_has(args, 'P')) {
320: if ((template = args_get(args, 'F')) == NULL)
321: template = NEW_SESSION_TEMPLATE;
1.102 nicm 322: cp = format_single(item, template, c, s, NULL, NULL);
1.92 nicm 323: cmdq_print(item, "%s", cp);
1.50 nicm 324: free(cp);
325: }
1.89 nicm 326:
1.48 nicm 327: if (!detached)
1.91 nicm 328: c->flags |= CLIENT_ATTACHED;
1.54 nicm 329:
1.76 nicm 330: if (to_free != NULL)
331: free((void *)to_free);
1.90 nicm 332:
333: cmd_find_from_session(&fs, s);
1.92 nicm 334: hooks_insert(s->hooks, item, &fs, "after-new-session");
1.91 nicm 335:
1.48 nicm 336: return (CMD_RETURN_NORMAL);
1.54 nicm 337:
338: error:
1.76 nicm 339: if (to_free != NULL)
340: free((void *)to_free);
1.54 nicm 341: return (CMD_RETURN_ERROR);
1.1 nicm 342: }
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