Annotation of src/usr.bin/tmux/cmd-new-session.c, Revision 1.38
1.38 ! nicm 1: /* $OpenBSD: cmd-new-session.c,v 1.37 2011/04/05 19:37:01 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');
1.38 ! nicm 71: if (newname != NULL) {
! 72: if (!session_check_name(newname)) {
! 73: ctx->error(ctx, "bad session name: %s", newname);
! 74: return (-1);
! 75: }
! 76: if (session_find(newname) != NULL) {
! 77: ctx->error(ctx, "duplicate session: %s", newname);
! 78: return (-1);
! 79: }
1.4 nicm 80: }
1.1 nicm 81:
1.34 nicm 82: target = args_get(args, 't');
83: if (target != NULL) {
1.37 nicm 84: groupwith = cmd_find_session(ctx, target, 0);
1.34 nicm 85: if (groupwith == NULL)
86: return (-1);
87: } else
88: groupwith = NULL;
1.21 nicm 89:
1.4 nicm 90: /*
1.6 nicm 91: * There are three cases:
1.4 nicm 92: *
93: * 1. If cmdclient is non-NULL, new-session has been called from the
94: * command-line - cmdclient is to become a new attached, interactive
95: * client. Unless -d is given, the terminal must be opened and then
96: * the client sent MSG_READY.
97: *
98: * 2. If cmdclient is NULL, new-session has been called from an
99: * existing client (such as a key binding).
100: *
1.6 nicm 101: * 3. Both are NULL, the command was in the configuration file. Treat
102: * this as if -d was given even if it was not.
103: *
104: * In all cases, a new additional session needs to be created and
1.4 nicm 105: * (unless -d) set as the current session for the client.
106: */
107:
1.6 nicm 108: /* Set -d if no client. */
1.34 nicm 109: detached = args_has(args, 'd');
1.6 nicm 110: if (ctx->cmdclient == NULL && ctx->curclient == NULL)
111: detached = 1;
112:
1.15 nicm 113: /*
1.19 nicm 114: * Save the termios settings, part of which is used for new windows in
115: * this session.
1.15 nicm 116: *
117: * This is read again with tcgetattr() rather than using tty.tio as if
118: * detached, tty_open won't be called. Because of this, it must be done
119: * before opening the terminal as that calls tcsetattr() to prepare for
120: * tmux taking over.
121: */
122: if (ctx->cmdclient != NULL && ctx->cmdclient->tty.fd != -1) {
123: if (tcgetattr(ctx->cmdclient->tty.fd, &tio) != 0)
124: fatal("tcgetattr failed");
1.19 nicm 125: tiop = &tio;
1.15 nicm 126: } else
1.19 nicm 127: tiop = NULL;
1.15 nicm 128:
1.4 nicm 129: /* Open the terminal if necessary. */
1.6 nicm 130: if (!detached && ctx->cmdclient != NULL) {
1.4 nicm 131: if (!(ctx->cmdclient->flags & CLIENT_TERMINAL)) {
132: ctx->error(ctx, "not a terminal");
1.1 nicm 133: return (-1);
134: }
1.25 nicm 135:
136: overrides =
1.9 nicm 137: options_get_string(&global_s_options, "terminal-overrides");
138: if (tty_open(&ctx->cmdclient->tty, overrides, &cause) != 0) {
1.4 nicm 139: ctx->error(ctx, "open terminal failed: %s", cause);
140: xfree(cause);
1.1 nicm 141: return (-1);
142: }
143: }
144:
1.16 nicm 145: /* Get the new session working directory. */
146: if (ctx->cmdclient != NULL && ctx->cmdclient->cwd != NULL)
147: cwd = ctx->cmdclient->cwd;
1.30 nicm 148: else {
149: pw = getpwuid(getuid());
150: if (pw->pw_dir != NULL && *pw->pw_dir != '\0')
151: cwd = pw->pw_dir;
152: else
153: cwd = "/";
154: }
1.16 nicm 155:
156: /* Find new session size. */
1.6 nicm 157: if (detached) {
1.4 nicm 158: sx = 80;
1.18 nicm 159: sy = 24;
1.35 nicm 160: if (args_has(args, 'x')) {
161: sx = strtonum(
162: args_get(args, 'x'), 1, USHRT_MAX, &errstr);
163: if (errstr != NULL) {
164: ctx->error(ctx, "width %s", errstr);
165: return (-1);
166: }
167: }
168: if (args_has(args, 'y')) {
169: sy = strtonum(
170: args_get(args, 'y'), 1, USHRT_MAX, &errstr);
171: if (errstr != NULL) {
172: ctx->error(ctx, "height %s", errstr);
173: return (-1);
174: }
175: }
1.16 nicm 176: } else if (ctx->cmdclient != NULL) {
177: sx = ctx->cmdclient->tty.sx;
178: sy = ctx->cmdclient->tty.sy;
1.4 nicm 179: } else {
1.16 nicm 180: sx = ctx->curclient->tty.sx;
181: sy = ctx->curclient->tty.sy;
1.1 nicm 182: }
1.7 nicm 183: if (sy > 0 && options_get_number(&global_s_options, "status"))
1.4 nicm 184: sy--;
185: if (sx == 0)
186: sx = 1;
187: if (sy == 0)
188: sy = 1;
1.16 nicm 189:
190: /* Figure out the command for the new window. */
1.34 nicm 191: if (target != NULL)
1.21 nicm 192: cmd = NULL;
1.34 nicm 193: else if (args->argc != 0)
194: cmd = args->argv[0];
1.1 nicm 195: else
1.7 nicm 196: cmd = options_get_string(&global_s_options, "default-command");
1.1 nicm 197:
1.10 nicm 198: /* Construct the environment. */
199: environ_init(&env);
200: update = options_get_string(&global_s_options, "update-environment");
201: if (ctx->cmdclient != NULL)
202: environ_update(update, &ctx->cmdclient->environ, &env);
1.11 nicm 203:
1.4 nicm 204: /* Create the new session. */
1.13 nicm 205: idx = -1 - options_get_number(&global_s_options, "base-index");
1.34 nicm 206: s = session_create(newname, cmd, cwd, &env, tiop, idx, sx, sy, &cause);
1.1 nicm 207: if (s == NULL) {
208: ctx->error(ctx, "create session failed: %s", cause);
209: xfree(cause);
210: return (-1);
211: }
1.10 nicm 212: environ_free(&env);
1.4 nicm 213:
1.16 nicm 214: /* Set the initial window name if one given. */
1.34 nicm 215: if (cmd != NULL && args_has(args, 'n')) {
1.16 nicm 216: w = s->curw->window;
217:
218: xfree(w->name);
1.34 nicm 219: w->name = xstrdup(args_get(args, 'n'));
1.16 nicm 220:
221: options_set_number(&w->options, "automatic-rename", 0);
1.21 nicm 222: }
223:
224: /*
225: * If a target session is given, this is to be part of a session group,
226: * so add it to the group and synchronize.
227: */
228: if (groupwith != NULL) {
229: session_group_add(groupwith, s);
230: session_group_synchronize_to(s);
231: session_select(s, RB_ROOT(&s->windows)->idx);
1.1 nicm 232: }
233:
1.16 nicm 234: /*
235: * Set the client to the new session. If a command client exists, it is
236: * taking this session and needs to get MSG_READY and stay around.
1.4 nicm 237: */
1.25 nicm 238: if (!detached) {
1.4 nicm 239: if (ctx->cmdclient != NULL) {
1.16 nicm 240: server_write_client(ctx->cmdclient, MSG_READY, NULL, 0);
1.32 nicm 241:
242: old_s = ctx->cmdclient->session;
243: if (old_s != NULL)
244: ctx->cmdclient->last_session = old_s;
1.25 nicm 245: ctx->cmdclient->session = s;
1.33 nicm 246: session_update_activity(s);
1.4 nicm 247: server_redraw_client(ctx->cmdclient);
248: } else {
1.32 nicm 249: old_s = ctx->curclient->session;
250: if (old_s != NULL)
251: ctx->curclient->last_session = old_s;
1.25 nicm 252: ctx->curclient->session = s;
1.33 nicm 253: session_update_activity(s);
1.4 nicm 254: server_redraw_client(ctx->curclient);
255: }
1.1 nicm 256: }
257: recalculate_sizes();
1.22 nicm 258: server_update_socket();
1.26 nicm 259:
260: /*
261: * If there are still configuration file errors to display, put the new
262: * session's current window into more mode and display them now.
263: */
1.27 nicm 264: if (cfg_finished && !ARRAY_EMPTY(&cfg_causes)) {
1.26 nicm 265: wp = s->curw->window->active;
1.29 nicm 266: window_pane_set_mode(wp, &window_copy_mode);
267: window_copy_init_for_output(wp);
1.27 nicm 268: for (i = 0; i < ARRAY_LENGTH(&cfg_causes); i++) {
269: cause = ARRAY_ITEM(&cfg_causes, i);
1.29 nicm 270: window_copy_add(wp, "%s", cause);
1.27 nicm 271: xfree(cause);
1.26 nicm 272: }
1.27 nicm 273: ARRAY_FREE(&cfg_causes);
1.26 nicm 274: }
1.1 nicm 275:
1.12 nicm 276: return (!detached); /* 1 means don't tell command client to exit */
1.1 nicm 277: }
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