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c2acb99 @orebokech Import upstream snapshot from SVN r2630
orebokech authored
1 /* $Id: cmd-new-session.c 2619 2011-10-23 15:05:20Z tcunha $ */
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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
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21 #include <pwd.h>
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22 #include <stdlib.h>
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23 #include <string.h>
24 #include <termios.h>
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25 #include <unistd.h>
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26
27 #include "tmux.h"
28
29 /*
30 * Create a new session and attach to the current terminal unless -d is given.
31 */
32
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33 int cmd_new_session_check(struct args *);
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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",
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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]",
41 CMD_STARTSERVER|CMD_CANTNEST|CMD_SENDENVIRON,
42 NULL,
43 cmd_new_session_check,
44 cmd_new_session_exec
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45 };
46
47 int
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48 cmd_new_session_check(struct args *args)
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49 {
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50 if (args_has(args, 't') && (args->argc != 0 || args_has(args, 'n')))
51 return (-1);
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52 return (0);
53 }
54
55 int
56 cmd_new_session_exec(struct cmd *self, struct cmd_ctx *ctx)
57 {
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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;
65 const char *newname, *target, *update, *cwd, *errstr;
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) {
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 }
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80 }
81
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82 target = args_get(args, 't');
83 if (target != NULL) {
84 groupwith = cmd_find_session(ctx, target, 0);
85 if (groupwith == NULL)
86 return (-1);
87 } else
88 groupwith = NULL;
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89
90 /*
91 * There are three cases:
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 *
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
105 * (unless -d) set as the current session for the client.
106 */
107
108 /* Set -d if no client. */
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109 detached = args_has(args, 'd');
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110 if (ctx->cmdclient == NULL && ctx->curclient == NULL)
111 detached = 1;
112
113 /*
114 * Save the termios settings, part of which is used for new windows in
115 * this session.
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");
125 tiop = &tio;
126 } else
127 tiop = NULL;
128
129 /* Open the terminal if necessary. */
130 if (!detached && ctx->cmdclient != NULL) {
131 if (!(ctx->cmdclient->flags & CLIENT_TERMINAL)) {
132 ctx->error(ctx, "not a terminal");
133 return (-1);
134 }
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135
136 overrides =
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137 options_get_string(&global_s_options, "terminal-overrides");
138 if (tty_open(&ctx->cmdclient->tty, overrides, &cause) != 0) {
139 ctx->error(ctx, "open terminal failed: %s", cause);
140 xfree(cause);
141 return (-1);
142 }
143 }
144
145 /* Get the new session working directory. */
146 if (ctx->cmdclient != NULL && ctx->cmdclient->cwd != NULL)
147 cwd = ctx->cmdclient->cwd;
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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 }
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155
156 /* Find new session size. */
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157 if (ctx->cmdclient != NULL) {
158 sx = ctx->cmdclient->tty.sx;
159 sy = ctx->cmdclient->tty.sy;
160 } else if (ctx->curclient != NULL) {
161 sx = ctx->curclient->tty.sx;
162 sy = ctx->curclient->tty.sy;
163 } else {
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164 sx = 80;
165 sy = 24;
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166 }
167 if (detached) {
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168 if (args_has(args, 'x')) {
169 sx = strtonum(
170 args_get(args, 'x'), 1, USHRT_MAX, &errstr);
171 if (errstr != NULL) {
172 ctx->error(ctx, "width %s", errstr);
173 return (-1);
174 }
175 }
176 if (args_has(args, 'y')) {
177 sy = strtonum(
178 args_get(args, 'y'), 1, USHRT_MAX, &errstr);
179 if (errstr != NULL) {
180 ctx->error(ctx, "height %s", errstr);
181 return (-1);
182 }
183 }
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184 }
185 if (sy > 0 && options_get_number(&global_s_options, "status"))
186 sy--;
187 if (sx == 0)
188 sx = 1;
189 if (sy == 0)
190 sy = 1;
191
192 /* Figure out the command for the new window. */
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193 if (target != NULL)
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194 cmd = NULL;
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195 else if (args->argc != 0)
196 cmd = args->argv[0];
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197 else
198 cmd = options_get_string(&global_s_options, "default-command");
199
200 /* Construct the environment. */
201 environ_init(&env);
202 update = options_get_string(&global_s_options, "update-environment");
203 if (ctx->cmdclient != NULL)
204 environ_update(update, &ctx->cmdclient->environ, &env);
205
206 /* Create the new session. */
207 idx = -1 - options_get_number(&global_s_options, "base-index");
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208 s = session_create(newname, cmd, cwd, &env, tiop, idx, sx, sy, &cause);
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209 if (s == NULL) {
210 ctx->error(ctx, "create session failed: %s", cause);
211 xfree(cause);
212 return (-1);
213 }
214 environ_free(&env);
215
216 /* Set the initial window name if one given. */
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217 if (cmd != NULL && args_has(args, 'n')) {
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218 w = s->curw->window;
219
220 xfree(w->name);
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221 w->name = xstrdup(args_get(args, 'n'));
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222
223 options_set_number(&w->options, "automatic-rename", 0);
224 }
225
226 /*
227 * If a target session is given, this is to be part of a session group,
228 * so add it to the group and synchronize.
229 */
230 if (groupwith != NULL) {
231 session_group_add(groupwith, s);
232 session_group_synchronize_to(s);
233 session_select(s, RB_ROOT(&s->windows)->idx);
234 }
235
236 /*
237 * Set the client to the new session. If a command client exists, it is
238 * taking this session and needs to get MSG_READY and stay around.
239 */
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240 if (!detached) {
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241 if (ctx->cmdclient != NULL) {
242 server_write_client(ctx->cmdclient, MSG_READY, NULL, 0);
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243
244 old_s = ctx->cmdclient->session;
245 if (old_s != NULL)
246 ctx->cmdclient->last_session = old_s;
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247 ctx->cmdclient->session = s;
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248 session_update_activity(s);
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249 server_redraw_client(ctx->cmdclient);
250 } else {
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251 old_s = ctx->curclient->session;
252 if (old_s != NULL)
253 ctx->curclient->last_session = old_s;
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254 ctx->curclient->session = s;
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255 session_update_activity(s);
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256 server_redraw_client(ctx->curclient);
257 }
258 }
259 recalculate_sizes();
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260 server_update_socket();
261
262 /*
263 * If there are still configuration file errors to display, put the new
264 * session's current window into more mode and display them now.
265 */
266 if (cfg_finished && !ARRAY_EMPTY(&cfg_causes)) {
267 wp = s->curw->window->active;
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268 window_pane_set_mode(wp, &window_copy_mode);
269 window_copy_init_for_output(wp);
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270 for (i = 0; i < ARRAY_LENGTH(&cfg_causes); i++) {
271 cause = ARRAY_ITEM(&cfg_causes, i);
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272 window_copy_add(wp, "%s", cause);
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273 xfree(cause);
274 }
275 ARRAY_FREE(&cfg_causes);
276 }
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277
278 return (!detached); /* 1 means don't tell command client to exit */
279 }
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