1 /* $OpenBSD: cmd-attach-session.c,v 1.81 2020/04/13 10:59:58 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 cmdq_shared *shared = cmdq_get_shared(item); 54 struct cmd_find_state *current = &shared->current; 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 *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 if (server_client_check_nested(c)) { 73 cmdq_error(item, "sessions should be nested with care, " 74 "unset $TMUX to force"); 75 return (CMD_RETURN_ERROR); 76 } 77 78 if (tflag != NULL && tflag[strcspn(tflag, ":.")] != '\0') { 79 type = CMD_FIND_PANE; 80 flags = 0; 81 } else { 82 type = CMD_FIND_SESSION; 83 flags = CMD_FIND_PREFER_UNATTACHED; 84 } 85 if (cmd_find_target(&target, item, tflag, type, flags) != 0) 86 return (CMD_RETURN_ERROR); 87 s = target.s; 88 wl = target.wl; 89 wp = target.wp; 90 91 if (wl != NULL) { 92 if (wp != NULL) 93 window_set_active_pane(wp->window, wp, 1); 94 session_set_current(s, wl); 95 if (wp != NULL) 96 cmd_find_from_winlink_pane(current, wl, wp, 0); 97 else 98 cmd_find_from_winlink(current, wl, 0); 99 } 100 101 if (cflag != NULL) { 102 free((void *)s->cwd); 103 s->cwd = format_single(item, cflag, c, s, wl, wp); 104 } 105 106 c->last_session = c->session; 107 if (c->session != NULL) { 108 if (dflag || xflag) { 109 if (xflag) 110 msgtype = MSG_DETACHKILL; 111 else 112 msgtype = MSG_DETACH; 113 TAILQ_FOREACH(c_loop, &clients, entry) { 114 if (c_loop->session != s || c == c_loop) 115 continue; 116 server_client_detach(c_loop, msgtype); 117 } 118 } 119 if (!Eflag) 120 environ_update(s->options, c->environ, s->environ); 121 122 c->session = s; 123 if (~shared->flags & CMDQ_SHARED_REPEAT) 124 server_client_set_key_table(c, NULL); 125 tty_update_client_offset(c); 126 status_timer_start(c); 127 notify_client("client-session-changed", c); 128 session_update_activity(s, NULL); 129 gettimeofday(&s->last_attached_time, NULL); 130 server_redraw_client(c); 131 s->curw->flags &= ~WINLINK_ALERTFLAGS; 132 s->curw->window->latest = c; 133 } else { 134 if (server_client_open(c, &cause) != 0) { 135 cmdq_error(item, "open terminal failed: %s", cause); 136 free(cause); 137 return (CMD_RETURN_ERROR); 138 } 139 if (rflag) 140 c->flags |= CLIENT_READONLY; 141 142 if (dflag || xflag) { 143 if (xflag) 144 msgtype = MSG_DETACHKILL; 145 else 146 msgtype = MSG_DETACH; 147 TAILQ_FOREACH(c_loop, &clients, entry) { 148 if (c_loop->session != s || c == c_loop) 149 continue; 150 server_client_detach(c_loop, msgtype); 151 } 152 } 153 if (!Eflag) 154 environ_update(s->options, c->environ, s->environ); 155 156 c->session = s; 157 server_client_set_key_table(c, NULL); 158 tty_update_client_offset(c); 159 status_timer_start(c); 160 notify_client("client-session-changed", c); 161 session_update_activity(s, NULL); 162 gettimeofday(&s->last_attached_time, NULL); 163 server_redraw_client(c); 164 s->curw->flags &= ~WINLINK_ALERTFLAGS; 165 s->curw->window->latest = c; 166 167 if (~c->flags & CLIENT_CONTROL) 168 proc_send(c->peer, MSG_READY, -1, NULL, 0); 169 notify_client("client-attached", c); 170 c->flags |= CLIENT_ATTACHED; 171 } 172 recalculate_sizes(); 173 alerts_check_session(s); 174 server_update_socket(); 175 176 return (CMD_RETURN_NORMAL); 177 } 178 179 static enum cmd_retval 180 cmd_attach_session_exec(struct cmd *self, struct cmdq_item *item) 181 { 182 struct args *args = cmd_get_args(self); 183 184 return (cmd_attach_session(item, args_get(args, 't'), 185 args_has(args, 'd'), args_has(args, 'x'), args_has(args, 'r'), 186 args_get(args, 'c'), args_has(args, 'E'))); 187 } 188