Annotation of src/usr.bin/tmux/cmd-new-session.c, Revision 1.37
1.37 ! nicm 1: /* $OpenBSD: cmd-new-session.c,v 1.36 2011/02/03 20:50:03 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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:
1.30 nicm 21: #include <pwd.h>
1.35 nicm 22: #include <stdlib.h>
1.11 nicm 23: #include <string.h>
24: #include <termios.h>
1.30 nicm 25: #include <unistd.h>
1.11 nicm 26:
1.1 nicm 27: #include "tmux.h"
28:
29: /*
30: * Create a new session and attach to the current terminal unless -d is given.
31: */
32:
1.34 nicm 33: int cmd_new_session_check(struct args *);
1.1 nicm 34: int cmd_new_session_exec(struct cmd *, struct cmd_ctx *);
35:
36: const struct cmd_entry cmd_new_session_entry = {
37: "new-session", "new",
1.35 nicm 38: "dn:s:t:x:y:", 0, 1,
39: "[-d] [-n window-name] [-s session-name] [-t target-session] "
40: "[-x width] [-y height] [command]",
1.34 nicm 41: CMD_STARTSERVER|CMD_CANTNEST|CMD_SENDENVIRON,
42: NULL,
43: cmd_new_session_check,
44: cmd_new_session_exec
1.1 nicm 45: };
46:
47: int
1.34 nicm 48: cmd_new_session_check(struct args *args)
1.1 nicm 49: {
1.34 nicm 50: if (args_has(args, 't') && (args->argc != 0 || args_has(args, 'n')))
1.35 nicm 51: return (-1);
1.1 nicm 52: return (0);
53: }
54:
55: int
56: cmd_new_session_exec(struct cmd *self, struct cmd_ctx *ctx)
57: {
1.34 nicm 58: struct args *args = self->args;
59: struct session *s, *old_s, *groupwith;
60: struct window *w;
61: struct window_pane *wp;
62: struct environ env;
63: struct termios tio, *tiop;
64: struct passwd *pw;
1.35 nicm 65: const char *newname, *target, *update, *cwd, *errstr;
1.34 nicm 66: char *overrides, *cmd, *cause;
67: int detached, idx;
68: u_int sx, sy, i;
69:
70: newname = args_get(args, 's');
71: if (newname != NULL && session_find(newname) != NULL) {
72: ctx->error(ctx, "duplicate session: %s", newname);
1.4 nicm 73: return (-1);
74: }
1.1 nicm 75:
1.34 nicm 76: target = args_get(args, 't');
77: if (target != NULL) {
1.37 ! nicm 78: groupwith = cmd_find_session(ctx, target, 0);
1.34 nicm 79: if (groupwith == NULL)
80: return (-1);
81: } else
82: groupwith = NULL;
1.21 nicm 83:
1.4 nicm 84: /*
1.6 nicm 85: * There are three cases:
1.4 nicm 86: *
87: * 1. If cmdclient is non-NULL, new-session has been called from the
88: * command-line - cmdclient is to become a new attached, interactive
89: * client. Unless -d is given, the terminal must be opened and then
90: * the client sent MSG_READY.
91: *
92: * 2. If cmdclient is NULL, new-session has been called from an
93: * existing client (such as a key binding).
94: *
1.6 nicm 95: * 3. Both are NULL, the command was in the configuration file. Treat
96: * this as if -d was given even if it was not.
97: *
98: * In all cases, a new additional session needs to be created and
1.4 nicm 99: * (unless -d) set as the current session for the client.
100: */
101:
1.6 nicm 102: /* Set -d if no client. */
1.34 nicm 103: detached = args_has(args, 'd');
1.6 nicm 104: if (ctx->cmdclient == NULL && ctx->curclient == NULL)
105: detached = 1;
106:
1.15 nicm 107: /*
1.19 nicm 108: * Save the termios settings, part of which is used for new windows in
109: * this session.
1.15 nicm 110: *
111: * This is read again with tcgetattr() rather than using tty.tio as if
112: * detached, tty_open won't be called. Because of this, it must be done
113: * before opening the terminal as that calls tcsetattr() to prepare for
114: * tmux taking over.
115: */
116: if (ctx->cmdclient != NULL && ctx->cmdclient->tty.fd != -1) {
117: if (tcgetattr(ctx->cmdclient->tty.fd, &tio) != 0)
118: fatal("tcgetattr failed");
1.19 nicm 119: tiop = &tio;
1.15 nicm 120: } else
1.19 nicm 121: tiop = NULL;
1.15 nicm 122:
1.4 nicm 123: /* Open the terminal if necessary. */
1.6 nicm 124: if (!detached && ctx->cmdclient != NULL) {
1.4 nicm 125: if (!(ctx->cmdclient->flags & CLIENT_TERMINAL)) {
126: ctx->error(ctx, "not a terminal");
1.1 nicm 127: return (-1);
128: }
1.25 nicm 129:
130: overrides =
1.9 nicm 131: options_get_string(&global_s_options, "terminal-overrides");
132: if (tty_open(&ctx->cmdclient->tty, overrides, &cause) != 0) {
1.4 nicm 133: ctx->error(ctx, "open terminal failed: %s", cause);
134: xfree(cause);
1.1 nicm 135: return (-1);
136: }
137: }
138:
1.16 nicm 139: /* Get the new session working directory. */
140: if (ctx->cmdclient != NULL && ctx->cmdclient->cwd != NULL)
141: cwd = ctx->cmdclient->cwd;
1.30 nicm 142: else {
143: pw = getpwuid(getuid());
144: if (pw->pw_dir != NULL && *pw->pw_dir != '\0')
145: cwd = pw->pw_dir;
146: else
147: cwd = "/";
148: }
1.16 nicm 149:
150: /* Find new session size. */
1.6 nicm 151: if (detached) {
1.4 nicm 152: sx = 80;
1.18 nicm 153: sy = 24;
1.35 nicm 154: if (args_has(args, 'x')) {
155: sx = strtonum(
156: args_get(args, 'x'), 1, USHRT_MAX, &errstr);
157: if (errstr != NULL) {
158: ctx->error(ctx, "width %s", errstr);
159: return (-1);
160: }
161: }
162: if (args_has(args, 'y')) {
163: sy = strtonum(
164: args_get(args, 'y'), 1, USHRT_MAX, &errstr);
165: if (errstr != NULL) {
166: ctx->error(ctx, "height %s", errstr);
167: return (-1);
168: }
169: }
1.16 nicm 170: } else if (ctx->cmdclient != NULL) {
171: sx = ctx->cmdclient->tty.sx;
172: sy = ctx->cmdclient->tty.sy;
1.4 nicm 173: } else {
1.16 nicm 174: sx = ctx->curclient->tty.sx;
175: sy = ctx->curclient->tty.sy;
1.1 nicm 176: }
1.7 nicm 177: if (sy > 0 && options_get_number(&global_s_options, "status"))
1.4 nicm 178: sy--;
179: if (sx == 0)
180: sx = 1;
181: if (sy == 0)
182: sy = 1;
1.16 nicm 183:
184: /* Figure out the command for the new window. */
1.34 nicm 185: if (target != NULL)
1.21 nicm 186: cmd = NULL;
1.34 nicm 187: else if (args->argc != 0)
188: cmd = args->argv[0];
1.1 nicm 189: else
1.7 nicm 190: cmd = options_get_string(&global_s_options, "default-command");
1.1 nicm 191:
1.10 nicm 192: /* Construct the environment. */
193: environ_init(&env);
194: update = options_get_string(&global_s_options, "update-environment");
195: if (ctx->cmdclient != NULL)
196: environ_update(update, &ctx->cmdclient->environ, &env);
1.11 nicm 197:
1.4 nicm 198: /* Create the new session. */
1.13 nicm 199: idx = -1 - options_get_number(&global_s_options, "base-index");
1.34 nicm 200: s = session_create(newname, cmd, cwd, &env, tiop, idx, sx, sy, &cause);
1.1 nicm 201: if (s == NULL) {
202: ctx->error(ctx, "create session failed: %s", cause);
203: xfree(cause);
204: return (-1);
205: }
1.10 nicm 206: environ_free(&env);
1.4 nicm 207:
1.16 nicm 208: /* Set the initial window name if one given. */
1.34 nicm 209: if (cmd != NULL && args_has(args, 'n')) {
1.16 nicm 210: w = s->curw->window;
211:
212: xfree(w->name);
1.34 nicm 213: w->name = xstrdup(args_get(args, 'n'));
1.16 nicm 214:
215: options_set_number(&w->options, "automatic-rename", 0);
1.21 nicm 216: }
217:
218: /*
219: * If a target session is given, this is to be part of a session group,
220: * so add it to the group and synchronize.
221: */
222: if (groupwith != NULL) {
223: session_group_add(groupwith, s);
224: session_group_synchronize_to(s);
225: session_select(s, RB_ROOT(&s->windows)->idx);
1.1 nicm 226: }
227:
1.16 nicm 228: /*
229: * Set the client to the new session. If a command client exists, it is
230: * taking this session and needs to get MSG_READY and stay around.
1.4 nicm 231: */
1.25 nicm 232: if (!detached) {
1.4 nicm 233: if (ctx->cmdclient != NULL) {
1.16 nicm 234: server_write_client(ctx->cmdclient, MSG_READY, NULL, 0);
1.32 nicm 235:
236: old_s = ctx->cmdclient->session;
237: if (old_s != NULL)
238: ctx->cmdclient->last_session = old_s;
1.25 nicm 239: ctx->cmdclient->session = s;
1.33 nicm 240: session_update_activity(s);
1.4 nicm 241: server_redraw_client(ctx->cmdclient);
242: } else {
1.32 nicm 243: old_s = ctx->curclient->session;
244: if (old_s != NULL)
245: ctx->curclient->last_session = old_s;
1.25 nicm 246: ctx->curclient->session = s;
1.33 nicm 247: session_update_activity(s);
1.4 nicm 248: server_redraw_client(ctx->curclient);
249: }
1.1 nicm 250: }
251: recalculate_sizes();
1.22 nicm 252: server_update_socket();
1.26 nicm 253:
254: /*
255: * If there are still configuration file errors to display, put the new
256: * session's current window into more mode and display them now.
257: */
1.27 nicm 258: if (cfg_finished && !ARRAY_EMPTY(&cfg_causes)) {
1.26 nicm 259: wp = s->curw->window->active;
1.29 nicm 260: window_pane_set_mode(wp, &window_copy_mode);
261: window_copy_init_for_output(wp);
1.27 nicm 262: for (i = 0; i < ARRAY_LENGTH(&cfg_causes); i++) {
263: cause = ARRAY_ITEM(&cfg_causes, i);
1.29 nicm 264: window_copy_add(wp, "%s", cause);
1.27 nicm 265: xfree(cause);
1.26 nicm 266: }
1.27 nicm 267: ARRAY_FREE(&cfg_causes);
1.26 nicm 268: }
1.1 nicm 269:
1.12 nicm 270: return (!detached); /* 1 means don't tell command client to exit */
1.1 nicm 271: }