1 /* $OpenBSD: cmd-attach-session.c,v 1.79 2019/11/29 16:04:07 nicm Exp $ */ 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:dErt:x", 0, 0 }, 41 .usage = "[-dErx] [-c working-directory] " CMD_TARGET_SESSION_USAGE, 42 43 /* -t is special */ 44 45 .flags = CMD_STARTSERVER, 46 .exec = cmd_attach_session_exec 47 }; 48 49 enum cmd_retval 50 cmd_attach_session(struct cmdq_item *item, const char *tflag, int dflag, 51 int xflag, int rflag, const char *cflag, int Eflag) 52 { 53 struct cmd_find_state *current = &item->shared->current; 54 enum cmd_find_type type; 55 int flags; 56 struct client *c = item->client, *c_loop; 57 struct session *s; 58 struct winlink *wl; 59 struct window_pane *wp; 60 char *cause; 61 enum msgtype msgtype; 62 63 if (RB_EMPTY(&sessions)) { 64 cmdq_error(item, "no sessions"); 65 return (CMD_RETURN_ERROR); 66 } 67 68 if (c == NULL) 69 return (CMD_RETURN_NORMAL); 70 if (server_client_check_nested(c)) { 71 cmdq_error(item, "sessions should be nested with care, " 72 "unset $TMUX to force"); 73 return (CMD_RETURN_ERROR); 74 } 75 76 if (tflag != NULL && tflag[strcspn(tflag, ":.")] != '\0') { 77 type = CMD_FIND_PANE; 78 flags = 0; 79 } else { 80 type = CMD_FIND_SESSION; 81 flags = CMD_FIND_PREFER_UNATTACHED; 82 } 83 if (cmd_find_target(&item->target, item, tflag, type, flags) != 0) 84 return (CMD_RETURN_ERROR); 85 s = item->target.s; 86 wl = item->target.wl; 87 wp = item->target.wp; 88 89 if (wl != NULL) { 90 if (wp != NULL) 91 window_set_active_pane(wp->window, wp, 1); 92 session_set_current(s, wl); 93 if (wp != NULL) 94 cmd_find_from_winlink_pane(current, wl, wp, 0); 95 else 96 cmd_find_from_winlink(current, wl, 0); 97 } 98 99 if (cflag != NULL) { 100 free((void *)s->cwd); 101 s->cwd = format_single(item, cflag, c, s, wl, wp); 102 } 103 104 c->last_session = c->session; 105 if (c->session != NULL) { 106 if (dflag || xflag) { 107 if (xflag) 108 msgtype = MSG_DETACHKILL; 109 else 110 msgtype = MSG_DETACH; 111 TAILQ_FOREACH(c_loop, &clients, entry) { 112 if (c_loop->session != s || c == c_loop) 113 continue; 114 server_client_detach(c_loop, msgtype); 115 } 116 } 117 if (!Eflag) 118 environ_update(s->options, c->environ, s->environ); 119 120 c->session = s; 121 if (~item->shared->flags & CMDQ_SHARED_REPEAT) 122 server_client_set_key_table(c, NULL); 123 tty_update_client_offset(c); 124 status_timer_start(c); 125 notify_client("client-session-changed", c); 126 session_update_activity(s, NULL); 127 gettimeofday(&s->last_attached_time, NULL); 128 server_redraw_client(c); 129 s->curw->flags &= ~WINLINK_ALERTFLAGS; 130 s->curw->window->latest = c; 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 if (rflag) 138 c->flags |= CLIENT_READONLY; 139 140 if (dflag || xflag) { 141 if (xflag) 142 msgtype = MSG_DETACHKILL; 143 else 144 msgtype = MSG_DETACH; 145 TAILQ_FOREACH(c_loop, &clients, entry) { 146 if (c_loop->session != s || c == c_loop) 147 continue; 148 server_client_detach(c_loop, msgtype); 149 } 150 } 151 if (!Eflag) 152 environ_update(s->options, c->environ, s->environ); 153 154 c->session = s; 155 server_client_set_key_table(c, NULL); 156 tty_update_client_offset(c); 157 status_timer_start(c); 158 notify_client("client-session-changed", c); 159 session_update_activity(s, NULL); 160 gettimeofday(&s->last_attached_time, NULL); 161 server_redraw_client(c); 162 s->curw->flags &= ~WINLINK_ALERTFLAGS; 163 s->curw->window->latest = c; 164 165 if (~c->flags & CLIENT_CONTROL) 166 proc_send(c->peer, MSG_READY, -1, NULL, 0); 167 notify_client("client-attached", c); 168 c->flags |= CLIENT_ATTACHED; 169 } 170 recalculate_sizes(); 171 alerts_check_session(s); 172 server_update_socket(); 173 174 return (CMD_RETURN_NORMAL); 175 } 176 177 static enum cmd_retval 178 cmd_attach_session_exec(struct cmd *self, struct cmdq_item *item) 179 { 180 struct args *args = self->args; 181 182 return (cmd_attach_session(item, args_get(args, 't'), 183 args_has(args, 'd'), args_has(args, 'x'), args_has(args, 'r'), 184 args_get(args, 'c'), args_has(args, 'E'))); 185 } 186