1 /* Id */
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
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 enum cmd_retval cmd_attach_session_exec(struct cmd *, struct cmd_q *);
34
35 const struct cmd_entry cmd_attach_session_entry = {
36 "attach-session", "attach",
37 "c:drt:", 0, 0,
38 "[-dr] [-c working-directory] " CMD_TARGET_SESSION_USAGE,
39 CMD_CANTNEST|CMD_STARTSERVER,
40 NULL,
41 cmd_attach_session_exec
42 };
43
44 enum cmd_retval
cmd_attach_session(struct cmd_q * cmdq,const char * tflag,int dflag,int rflag,const char * cflag)45 cmd_attach_session(struct cmd_q *cmdq, const char *tflag, int dflag, int rflag,
46 const char *cflag)
47 {
48 struct session *s;
49 struct client *c;
50 struct winlink *wl = NULL;
51 struct window *w = NULL;
52 struct window_pane *wp = NULL;
53 const char *update;
54 char *cause;
55 u_int i;
56 int fd;
57 struct format_tree *ft;
58 char *cp;
59
60 if (RB_EMPTY(&sessions)) {
61 cmdq_error(cmdq, "no sessions");
62 return (CMD_RETURN_ERROR);
63 }
64
65 if (tflag == NULL) {
66 if ((s = cmd_find_session(cmdq, tflag, 1)) == NULL)
67 return (CMD_RETURN_ERROR);
68 } else if (tflag[strcspn(tflag, ":.")] != '\0') {
69 if ((wl = cmd_find_pane(cmdq, tflag, &s, &wp)) == NULL)
70 return (CMD_RETURN_ERROR);
71 } else {
72 if ((s = cmd_find_session(cmdq, tflag, 1)) == NULL)
73 return (CMD_RETURN_ERROR);
74 w = cmd_lookup_windowid(tflag);
75 if (w == NULL && (wp = cmd_lookup_paneid(tflag)) != NULL)
76 w = wp->window;
77 if (w != NULL)
78 wl = winlink_find_by_window(&s->windows, w);
79 }
80
81 if (cmdq->client == NULL)
82 return (CMD_RETURN_NORMAL);
83
84 if (wl != NULL) {
85 if (wp != NULL)
86 window_set_active_pane(wp->window, wp);
87 session_set_current(s, wl);
88 }
89
90 if (cmdq->client->session != NULL) {
91 if (dflag) {
92 /*
93 * Can't use server_write_session in case attaching to
94 * the same session as currently attached to.
95 */
96 for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
97 c = ARRAY_ITEM(&clients, i);
98 if (c == NULL || c->session != s)
99 continue;
100 if (c == cmdq->client)
101 continue;
102 server_write_client(c, MSG_DETACH,
103 c->session->name,
104 strlen(c->session->name) + 1);
105 }
106 }
107
108 if (cflag != NULL) {
109 ft = format_create();
110 if ((c = cmd_find_client(cmdq, NULL, 1)) != NULL)
111 format_client(ft, c);
112 format_session(ft, s);
113 format_winlink(ft, s, s->curw);
114 format_window_pane(ft, s->curw->window->active);
115 cp = format_expand(ft, cflag);
116 format_free(ft);
117
118 fd = open(cp, O_RDONLY|O_DIRECTORY);
119 free(cp);
120 if (fd == -1) {
121 cmdq_error(cmdq, "bad working directory: %s",
122 strerror(errno));
123 return (CMD_RETURN_ERROR);
124 }
125 close(s->cwd);
126 s->cwd = fd;
127 }
128
129 cmdq->client->session = s;
130 notify_attached_session_changed(cmdq->client);
131 session_update_activity(s);
132 server_redraw_client(cmdq->client);
133 s->curw->flags &= ~WINLINK_ALERTFLAGS;
134 } else {
135 if (server_client_open(cmdq->client, s, &cause) != 0) {
136 cmdq_error(cmdq, "open terminal failed: %s", cause);
137 free(cause);
138 return (CMD_RETURN_ERROR);
139 }
140
141 if (cflag != NULL) {
142 ft = format_create();
143 if ((c = cmd_find_client(cmdq, NULL, 1)) != NULL)
144 format_client(ft, c);
145 format_session(ft, s);
146 format_winlink(ft, s, s->curw);
147 format_window_pane(ft, s->curw->window->active);
148 cp = format_expand(ft, cflag);
149 format_free(ft);
150
151 fd = open(cp, O_RDONLY|O_DIRECTORY);
152 free(cp);
153 if (fd == -1) {
154 cmdq_error(cmdq, "bad working directory: %s",
155 strerror(errno));
156 return (CMD_RETURN_ERROR);
157 }
158 close(s->cwd);
159 s->cwd = fd;
160 }
161
162 if (rflag)
163 cmdq->client->flags |= CLIENT_READONLY;
164
165 if (dflag) {
166 server_write_session(s, MSG_DETACH, s->name,
167 strlen(s->name) + 1);
168 }
169
170 update = options_get_string(&s->options, "update-environment");
171 environ_update(update, &cmdq->client->environ, &s->environ);
172
173 cmdq->client->session = s;
174 notify_attached_session_changed(cmdq->client);
175 session_update_activity(s);
176 server_redraw_client(cmdq->client);
177 s->curw->flags &= ~WINLINK_ALERTFLAGS;
178
179 server_write_ready(cmdq->client);
180 cmdq->client_exit = 0;
181 }
182 recalculate_sizes();
183 server_update_socket();
184
185 return (CMD_RETURN_NORMAL);
186 }
187
188 enum cmd_retval
cmd_attach_session_exec(struct cmd * self,struct cmd_q * cmdq)189 cmd_attach_session_exec(struct cmd *self, struct cmd_q *cmdq)
190 {
191 struct args *args = self->args;
192
193 return (cmd_attach_session(cmdq, args_get(args, 't'),
194 args_has(args, 'd'), args_has(args, 'r'), args_get(args, 'c')));
195 }
196