1 /* $OpenBSD: cmd-attach-session.c,v 1.76 2018/10/18 08:38:01 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:", 0, 0 }, 41 .usage = "[-dEr] [-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 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 62 if (RB_EMPTY(&sessions)) { 63 cmdq_error(item, "no sessions"); 64 return (CMD_RETURN_ERROR); 65 } 66 67 if (c == NULL) 68 return (CMD_RETURN_NORMAL); 69 if (server_client_check_nested(c)) { 70 cmdq_error(item, "sessions should be nested with care, " 71 "unset $TMUX to force"); 72 return (CMD_RETURN_ERROR); 73 } 74 75 if (tflag != NULL && tflag[strcspn(tflag, ":.")] != '\0') { 76 type = CMD_FIND_PANE; 77 flags = 0; 78 } else { 79 type = CMD_FIND_SESSION; 80 flags = CMD_FIND_PREFER_UNATTACHED; 81 } 82 if (cmd_find_target(&item->target, item, tflag, type, flags) != 0) 83 return (CMD_RETURN_ERROR); 84 s = item->target.s; 85 wl = item->target.wl; 86 wp = item->target.wp; 87 88 if (wl != NULL) { 89 if (wp != NULL) 90 window_set_active_pane(wp->window, wp); 91 session_set_current(s, wl); 92 if (wp != NULL) 93 cmd_find_from_winlink_pane(current, wl, wp, 0); 94 else 95 cmd_find_from_winlink(current, wl, 0); 96 } 97 98 if (cflag != NULL) { 99 free((void *)s->cwd); 100 s->cwd = format_single(item, cflag, c, s, wl, wp); 101 } 102 103 c->last_session = c->session; 104 if (c->session != NULL) { 105 if (dflag) { 106 TAILQ_FOREACH(c_loop, &clients, entry) { 107 if (c_loop->session != s || c == c_loop) 108 continue; 109 server_client_detach(c_loop, MSG_DETACH); 110 } 111 } 112 if (!Eflag) 113 environ_update(s->options, c->environ, s->environ); 114 115 c->session = s; 116 if (~item->shared->flags & CMDQ_SHARED_REPEAT) 117 server_client_set_key_table(c, NULL); 118 tty_update_client_offset(c); 119 status_timer_start(c); 120 notify_client("client-session-changed", c); 121 session_update_activity(s, NULL); 122 gettimeofday(&s->last_attached_time, NULL); 123 server_redraw_client(c); 124 s->curw->flags &= ~WINLINK_ALERTFLAGS; 125 } else { 126 if (server_client_open(c, &cause) != 0) { 127 cmdq_error(item, "open terminal failed: %s", cause); 128 free(cause); 129 return (CMD_RETURN_ERROR); 130 } 131 if (rflag) 132 c->flags |= CLIENT_READONLY; 133 134 if (dflag) { 135 TAILQ_FOREACH(c_loop, &clients, entry) { 136 if (c_loop->session != s || c == c_loop) 137 continue; 138 server_client_detach(c_loop, MSG_DETACH); 139 } 140 } 141 if (!Eflag) 142 environ_update(s->options, c->environ, s->environ); 143 144 c->session = s; 145 server_client_set_key_table(c, NULL); 146 tty_update_client_offset(c); 147 status_timer_start(c); 148 notify_client("client-session-changed", c); 149 session_update_activity(s, NULL); 150 gettimeofday(&s->last_attached_time, NULL); 151 server_redraw_client(c); 152 s->curw->flags &= ~WINLINK_ALERTFLAGS; 153 154 if (~c->flags & CLIENT_CONTROL) 155 proc_send(c->peer, MSG_READY, -1, NULL, 0); 156 notify_client("client-attached", c); 157 c->flags |= CLIENT_ATTACHED; 158 } 159 recalculate_sizes(); 160 alerts_check_session(s); 161 server_update_socket(); 162 163 return (CMD_RETURN_NORMAL); 164 } 165 166 static enum cmd_retval 167 cmd_attach_session_exec(struct cmd *self, struct cmdq_item *item) 168 { 169 struct args *args = self->args; 170 171 return (cmd_attach_session(item, args_get(args, 't'), 172 args_has(args, 'd'), args_has(args, 'r'), args_get(args, 'c'), 173 args_has(args, 'E'))); 174 } 175