Annotation of src/usr.bin/tmux/cmd-attach-session.c, Revision 1.29
1.29 ! nicm 1: /* $OpenBSD: cmd-attach-session.c,v 1.28 2013/10/10 12:28:08 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:
1.27 nicm 21: #include <errno.h>
22: #include <fcntl.h>
1.21 nicm 23: #include <stdlib.h>
1.27 nicm 24: #include <string.h>
25: #include <unistd.h>
1.21 nicm 26:
1.1 nicm 27: #include "tmux.h"
28:
29: /*
30: * Attach existing session to the current terminal.
31: */
32:
1.23 nicm 33: enum cmd_retval cmd_attach_session_exec(struct cmd *, struct cmd_q *);
1.1 nicm 34:
35: const struct cmd_entry cmd_attach_session_entry = {
36: "attach-session", "attach",
1.27 nicm 37: "c:drt:", 0, 0,
38: "[-dr] [-c working-directory] " CMD_TARGET_SESSION_USAGE,
1.26 nicm 39: CMD_CANTNEST|CMD_STARTSERVER,
1.15 nicm 40: NULL,
41: cmd_attach_session_exec
1.1 nicm 42: };
43:
1.22 nicm 44: enum cmd_retval
1.27 nicm 45: cmd_attach_session(struct cmd_q *cmdq, const char *tflag, int dflag, int rflag,
46: const char *cflag)
1.1 nicm 47: {
1.27 nicm 48: struct session *s;
49: struct client *c;
1.29 ! nicm 50: struct winlink *wl = NULL;
! 51: struct window *w = NULL;
! 52: struct window_pane *wp = NULL;
1.27 nicm 53: const char *update;
54: char *cause;
55: u_int i;
56: int fd;
57: struct format_tree *ft;
58: char *cp;
1.1 nicm 59:
1.13 nicm 60: if (RB_EMPTY(&sessions)) {
1.23 nicm 61: cmdq_error(cmdq, "no sessions");
1.22 nicm 62: return (CMD_RETURN_ERROR);
1.1 nicm 63: }
1.15 nicm 64:
1.29 ! nicm 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: }
1.5 nicm 80:
1.23 nicm 81: if (cmdq->client == NULL)
1.22 nicm 82: return (CMD_RETURN_NORMAL);
1.29 ! nicm 83:
! 84: if (wl != NULL) {
! 85: if (wp != NULL)
! 86: window_set_active_pane(wp->window, wp);
! 87: session_set_current(s, wl);
! 88: }
1.1 nicm 89:
1.23 nicm 90: if (cmdq->client->session != NULL) {
1.24 nicm 91: if (dflag) {
1.11 nicm 92: /*
1.4 nicm 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;
1.23 nicm 100: if (c == cmdq->client)
1.4 nicm 101: continue;
1.28 nicm 102: server_write_client(c, MSG_DETACH,
103: c->session->name,
104: strlen(c->session->name) + 1);
1.4 nicm 105: }
106: }
1.11 nicm 107:
1.27 nicm 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:
1.23 nicm 129: cmdq->client->session = s;
130: notify_attached_session_changed(cmdq->client);
1.14 nicm 131: session_update_activity(s);
1.23 nicm 132: server_redraw_client(cmdq->client);
1.17 nicm 133: s->curw->flags &= ~WINLINK_ALERTFLAGS;
1.4 nicm 134: } else {
1.23 nicm 135: if (server_client_open(cmdq->client, s, &cause) != 0) {
136: cmdq_error(cmdq, "open terminal failed: %s", cause);
1.21 nicm 137: free(cause);
1.22 nicm 138: return (CMD_RETURN_ERROR);
1.4 nicm 139: }
1.12 nicm 140:
1.27 nicm 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:
1.24 nicm 162: if (rflag)
1.23 nicm 163: cmdq->client->flags |= CLIENT_READONLY;
1.4 nicm 164:
1.28 nicm 165: if (dflag) {
166: server_write_session(s, MSG_DETACH, s->name,
167: strlen(s->name) + 1);
168: }
1.4 nicm 169:
1.8 nicm 170: update = options_get_string(&s->options, "update-environment");
1.23 nicm 171: environ_update(update, &cmdq->client->environ, &s->environ);
1.8 nicm 172:
1.23 nicm 173: cmdq->client->session = s;
174: notify_attached_session_changed(cmdq->client);
175: session_update_activity(s);
176: server_redraw_client(cmdq->client);
1.17 nicm 177: s->curw->flags &= ~WINLINK_ALERTFLAGS;
1.23 nicm 178:
179: server_write_ready(cmdq->client);
180: cmdq->client_exit = 0;
1.1 nicm 181: }
182: recalculate_sizes();
1.9 nicm 183: server_update_socket();
1.1 nicm 184:
1.23 nicm 185: return (CMD_RETURN_NORMAL);
1.24 nicm 186: }
187:
188: enum cmd_retval
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'),
1.27 nicm 194: args_has(args, 'd'), args_has(args, 'r'), args_get(args, 'c')));
1.1 nicm 195: }
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