1 /* $OpenBSD$ */
2
3 /*
4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
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
21 #include <errno.h>
22 #include <fcntl.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <unistd.h>
26
27 #include "tmux.h"
28
29 /*
30 * Attach existing session to the current terminal.
31 */
32
33 static enum cmd_retval cmd_attach_session_exec(struct cmd *,
34 struct cmdq_item *);
35
36 const struct cmd_entry cmd_attach_session_entry = {
37 .name = "attach-session",
38 .alias = "attach",
39
40 .args = { "c:dEf:rt:x", 0, 0, NULL },
41 .usage = "[-dErx] [-c working-directory] [-f flags] "
42 CMD_TARGET_SESSION_USAGE,
43
44 /* -t is special */
45
46 .flags = CMD_STARTSERVER|CMD_READONLY,
47 .exec = cmd_attach_session_exec
48 };
49
50 enum cmd_retval
cmd_attach_session(struct cmdq_item * item,const char * tflag,int dflag,int xflag,int rflag,const char * cflag,int Eflag,const char * fflag)51 cmd_attach_session(struct cmdq_item *item, const char *tflag, int dflag,
52 int xflag, int rflag, const char *cflag, int Eflag, const char *fflag)
53 {
54 struct cmd_find_state *current = cmdq_get_current(item);
55 struct cmd_find_state target;
56 enum cmd_find_type type;
57 int flags;
58 struct client *c = cmdq_get_client(item), *c_loop;
59 struct session *s;
60 struct winlink *wl;
61 struct window_pane *wp;
62 char *cwd, *cause;
63 enum msgtype msgtype;
64
65 if (RB_EMPTY(&sessions)) {
66 cmdq_error(item, "no sessions");
67 return (CMD_RETURN_ERROR);
68 }
69
70 if (c == NULL)
71 return (CMD_RETURN_NORMAL);
72
73 if (server_client_check_nested(c)) {
74 cmdq_error(item, "sessions should be nested with care, "
75 "unset $TMUX to force");
76 return (CMD_RETURN_ERROR);
77 }
78
79 if (tflag != NULL && tflag[strcspn(tflag, ":.")] != '\0') {
80 type = CMD_FIND_PANE;
81 flags = 0;
82 } else {
83 type = CMD_FIND_SESSION;
84 flags = CMD_FIND_PREFER_UNATTACHED;
85 }
86 if (cmd_find_target(&target, item, tflag, type, flags) != 0)
87 return (CMD_RETURN_ERROR);
88 s = target.s;
89 wl = target.wl;
90 wp = target.wp;
91
92 if (wl != NULL) {
93 if (wp != NULL)
94 window_set_active_pane(wp->window, wp, 1);
95 session_set_current(s, wl);
96 if (wp != NULL)
97 cmd_find_from_winlink_pane(current, wl, wp, 0);
98 else
99 cmd_find_from_winlink(current, wl, 0);
100 }
101
102 if (cflag != NULL) {
103 cwd = format_single(item, cflag, c, s, wl, wp);
104 free(__UNCONST(s->cwd));
105 s->cwd = cwd;
106 }
107 if (fflag)
108 server_client_set_flags(c, fflag);
109 if (rflag)
110 c->flags |= (CLIENT_READONLY|CLIENT_IGNORESIZE);
111
112 c->last_session = c->session;
113 if (c->session != NULL) {
114 if (dflag || xflag) {
115 if (xflag)
116 msgtype = MSG_DETACHKILL;
117 else
118 msgtype = MSG_DETACH;
119 TAILQ_FOREACH(c_loop, &clients, entry) {
120 if (c_loop->session != s || c == c_loop)
121 continue;
122 server_client_detach(c_loop, msgtype);
123 }
124 }
125 if (!Eflag)
126 environ_update(s->options, c->environ, s->environ);
127
128 server_client_set_session(c, s);
129 if (~cmdq_get_flags(item) & CMDQ_STATE_REPEAT)
130 server_client_set_key_table(c, NULL);
131 } else {
132 if (server_client_open(c, &cause) != 0) {
133 cmdq_error(item, "open terminal failed: %s", cause);
134 free(cause);
135 return (CMD_RETURN_ERROR);
136 }
137
138 if (dflag || xflag) {
139 if (xflag)
140 msgtype = MSG_DETACHKILL;
141 else
142 msgtype = MSG_DETACH;
143 TAILQ_FOREACH(c_loop, &clients, entry) {
144 if (c_loop->session != s || c == c_loop)
145 continue;
146 server_client_detach(c_loop, msgtype);
147 }
148 }
149 if (!Eflag)
150 environ_update(s->options, c->environ, s->environ);
151
152 server_client_set_session(c, s);
153 server_client_set_key_table(c, NULL);
154
155 if (~c->flags & CLIENT_CONTROL)
156 proc_send(c->peer, MSG_READY, -1, NULL, 0);
157 notify_client("client-attached", c);
158 c->flags |= CLIENT_ATTACHED;
159 }
160
161 if (cfg_finished)
162 cfg_show_causes(s);
163
164 return (CMD_RETURN_NORMAL);
165 }
166
167 static enum cmd_retval
cmd_attach_session_exec(struct cmd * self,struct cmdq_item * item)168 cmd_attach_session_exec(struct cmd *self, struct cmdq_item *item)
169 {
170 struct args *args = cmd_get_args(self);
171
172 return (cmd_attach_session(item, args_get(args, 't'),
173 args_has(args, 'd'), args_has(args, 'x'), args_has(args, 'r'),
174 args_get(args, 'c'), args_has(args, 'E'), args_get(args, 'f')));
175 }
176