1 /* $OpenBSD: cmd-attach-session.c,v 1.87 2021/08/21 10:22:38 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:dEf:rt:x", 0, 0, NULL }, 41 .usage = "[-dErx] [-c working-directory] [-f flags] " 42 CMD_TARGET_SESSION_USAGE, 43 44 /* -t is special */ 45 46 .flags = CMD_STARTSERVER, 47 .exec = cmd_attach_session_exec 48 }; 49 50 enum cmd_retval 51 cmd_attach_session(struct cmdq_item *item, const char *tflag, int dflag, 52 int xflag, int rflag, const char *cflag, int Eflag, const char *fflag) 53 { 54 struct cmd_find_state *current = cmdq_get_current(item); 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 *cwd, *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 cwd = format_single(item, cflag, c, s, wl, wp); 103 free((void *)s->cwd); 104 s->cwd = cwd; 105 } 106 if (fflag) 107 server_client_set_flags(c, fflag); 108 if (rflag) 109 c->flags |= (CLIENT_READONLY|CLIENT_IGNORESIZE); 110 111 c->last_session = c->session; 112 if (c->session != NULL) { 113 if (dflag || xflag) { 114 if (xflag) 115 msgtype = MSG_DETACHKILL; 116 else 117 msgtype = MSG_DETACH; 118 TAILQ_FOREACH(c_loop, &clients, entry) { 119 if (c_loop->session != s || c == c_loop) 120 continue; 121 server_client_detach(c_loop, msgtype); 122 } 123 } 124 if (!Eflag) 125 environ_update(s->options, c->environ, s->environ); 126 127 server_client_set_session(c, s); 128 if (~cmdq_get_flags(item) & CMDQ_STATE_REPEAT) 129 server_client_set_key_table(c, NULL); 130 } else { 131 if (server_client_open(c, &cause) != 0) { 132 cmdq_error(item, "open terminal failed: %s", cause); 133 free(cause); 134 return (CMD_RETURN_ERROR); 135 } 136 137 if (dflag || xflag) { 138 if (xflag) 139 msgtype = MSG_DETACHKILL; 140 else 141 msgtype = MSG_DETACH; 142 TAILQ_FOREACH(c_loop, &clients, entry) { 143 if (c_loop->session != s || c == c_loop) 144 continue; 145 server_client_detach(c_loop, msgtype); 146 } 147 } 148 if (!Eflag) 149 environ_update(s->options, c->environ, s->environ); 150 151 server_client_set_session(c, s); 152 server_client_set_key_table(c, NULL); 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 } 159 160 return (CMD_RETURN_NORMAL); 161 } 162 163 static enum cmd_retval 164 cmd_attach_session_exec(struct cmd *self, struct cmdq_item *item) 165 { 166 struct args *args = cmd_get_args(self); 167 168 return (cmd_attach_session(item, args_get(args, 't'), 169 args_has(args, 'd'), args_has(args, 'x'), args_has(args, 'r'), 170 args_get(args, 'c'), args_has(args, 'E'), args_get(args, 'f'))); 171 } 172