Annotation of src/usr.bin/tmux/cmd-new-session.c, Revision 1.46
1.46 ! nicm 1: /* $OpenBSD: cmd-new-session.c,v 1.45 2012/07/11 07:10:15 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:
1.45 nicm 33: enum cmd_retval cmd_new_session_check(struct args *);
34: enum cmd_retval cmd_new_session_exec(struct cmd *, struct cmd_ctx *);
1.1 nicm 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:
1.45 nicm 47: enum cmd_retval
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')))
1.45 nicm 51: return (CMD_RETURN_ERROR);
52: return (CMD_RETURN_NORMAL);
1.1 nicm 53: }
54:
1.45 nicm 55: enum cmd_retval
1.1 nicm 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 environ env;
62: struct termios tio, *tiop;
63: struct passwd *pw;
1.35 nicm 64: const char *newname, *target, *update, *cwd, *errstr;
1.42 nicm 65: char *cmd, *cause;
1.34 nicm 66: int detached, idx;
1.46 ! nicm 67: u_int sx, sy;
1.34 nicm 68:
69: newname = args_get(args, 's');
1.38 nicm 70: if (newname != NULL) {
71: if (!session_check_name(newname)) {
72: ctx->error(ctx, "bad session name: %s", newname);
1.45 nicm 73: return (CMD_RETURN_ERROR);
1.38 nicm 74: }
75: if (session_find(newname) != NULL) {
76: ctx->error(ctx, "duplicate session: %s", newname);
1.45 nicm 77: return (CMD_RETURN_ERROR);
1.38 nicm 78: }
1.4 nicm 79: }
1.1 nicm 80:
1.34 nicm 81: target = args_get(args, 't');
82: if (target != NULL) {
1.37 nicm 83: groupwith = cmd_find_session(ctx, target, 0);
1.34 nicm 84: if (groupwith == NULL)
1.45 nicm 85: return (CMD_RETURN_ERROR);
1.34 nicm 86: } else
87: groupwith = NULL;
1.21 nicm 88:
1.4 nicm 89: /*
1.6 nicm 90: * There are three cases:
1.4 nicm 91: *
92: * 1. If cmdclient is non-NULL, new-session has been called from the
93: * command-line - cmdclient is to become a new attached, interactive
94: * client. Unless -d is given, the terminal must be opened and then
95: * the client sent MSG_READY.
96: *
97: * 2. If cmdclient is NULL, new-session has been called from an
98: * existing client (such as a key binding).
99: *
1.6 nicm 100: * 3. Both are NULL, the command was in the configuration file. Treat
101: * this as if -d was given even if it was not.
102: *
103: * In all cases, a new additional session needs to be created and
1.4 nicm 104: * (unless -d) set as the current session for the client.
105: */
106:
1.6 nicm 107: /* Set -d if no client. */
1.34 nicm 108: detached = args_has(args, 'd');
1.6 nicm 109: if (ctx->cmdclient == NULL && ctx->curclient == NULL)
110: detached = 1;
111:
1.15 nicm 112: /*
1.19 nicm 113: * Save the termios settings, part of which is used for new windows in
114: * this session.
1.15 nicm 115: *
116: * This is read again with tcgetattr() rather than using tty.tio as if
117: * detached, tty_open won't be called. Because of this, it must be done
118: * before opening the terminal as that calls tcsetattr() to prepare for
119: * tmux taking over.
120: */
121: if (ctx->cmdclient != NULL && ctx->cmdclient->tty.fd != -1) {
122: if (tcgetattr(ctx->cmdclient->tty.fd, &tio) != 0)
123: fatal("tcgetattr failed");
1.19 nicm 124: tiop = &tio;
1.15 nicm 125: } else
1.19 nicm 126: tiop = NULL;
1.15 nicm 127:
1.4 nicm 128: /* Open the terminal if necessary. */
1.6 nicm 129: if (!detached && ctx->cmdclient != NULL) {
1.42 nicm 130: if (server_client_open(ctx->cmdclient, NULL, &cause) != 0) {
1.4 nicm 131: ctx->error(ctx, "open terminal failed: %s", cause);
1.44 nicm 132: free(cause);
1.45 nicm 133: return (CMD_RETURN_ERROR);
1.1 nicm 134: }
135: }
136:
1.16 nicm 137: /* Get the new session working directory. */
138: if (ctx->cmdclient != NULL && ctx->cmdclient->cwd != NULL)
139: cwd = ctx->cmdclient->cwd;
1.30 nicm 140: else {
141: pw = getpwuid(getuid());
142: if (pw->pw_dir != NULL && *pw->pw_dir != '\0')
143: cwd = pw->pw_dir;
144: else
145: cwd = "/";
146: }
1.16 nicm 147:
148: /* Find new session size. */
1.39 nicm 149: if (ctx->cmdclient != NULL) {
150: sx = ctx->cmdclient->tty.sx;
151: sy = ctx->cmdclient->tty.sy;
152: } else if (ctx->curclient != NULL) {
153: sx = ctx->curclient->tty.sx;
154: sy = ctx->curclient->tty.sy;
155: } else {
1.4 nicm 156: sx = 80;
1.18 nicm 157: sy = 24;
1.39 nicm 158: }
159: if (detached) {
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);
1.45 nicm 165: return (CMD_RETURN_ERROR);
1.35 nicm 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);
1.45 nicm 173: return (CMD_RETURN_ERROR);
1.35 nicm 174: }
175: }
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);
1.44 nicm 203: free(cause);
1.45 nicm 204: return (CMD_RETURN_ERROR);
1.1 nicm 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:
1.40 nicm 212: window_set_name(w, args_get(args, 'n'));
1.16 nicm 213:
214: options_set_number(&w->options, "automatic-rename", 0);
1.21 nicm 215: }
216:
217: /*
218: * If a target session is given, this is to be part of a session group,
219: * so add it to the group and synchronize.
220: */
221: if (groupwith != NULL) {
222: session_group_add(groupwith, s);
223: session_group_synchronize_to(s);
224: session_select(s, RB_ROOT(&s->windows)->idx);
1.1 nicm 225: }
226:
1.16 nicm 227: /*
228: * Set the client to the new session. If a command client exists, it is
229: * taking this session and needs to get MSG_READY and stay around.
1.4 nicm 230: */
1.25 nicm 231: if (!detached) {
1.4 nicm 232: if (ctx->cmdclient != NULL) {
1.43 nicm 233: server_write_ready(ctx->cmdclient);
1.32 nicm 234:
235: old_s = ctx->cmdclient->session;
236: if (old_s != NULL)
237: ctx->cmdclient->last_session = old_s;
1.25 nicm 238: ctx->cmdclient->session = s;
1.41 nicm 239: notify_attached_session_changed(ctx->cmdclient);
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;
1.41 nicm 247: notify_attached_session_changed(ctx->curclient);
1.33 nicm 248: session_update_activity(s);
1.4 nicm 249: server_redraw_client(ctx->curclient);
250: }
1.1 nicm 251: }
252: recalculate_sizes();
1.22 nicm 253: server_update_socket();
1.26 nicm 254:
255: /*
256: * If there are still configuration file errors to display, put the new
257: * session's current window into more mode and display them now.
258: */
1.46 ! nicm 259: if (cfg_finished)
! 260: show_cfg_causes(s);
1.1 nicm 261:
1.45 nicm 262: return (detached ? CMD_RETURN_NORMAL : CMD_RETURN_ATTACH);
1.1 nicm 263: }
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