1 /* $OpenBSD: cmd-attach-session.c,v 1.61 2016/01/19 15:59:12 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 enum cmd_retval cmd_attach_session_exec(struct cmd *, struct cmd_q *); 34 35 const struct cmd_entry cmd_attach_session_entry = { 36 .name = "attach-session", 37 .alias = "attach", 38 39 .args = { "c:dErt:", 0, 0 }, 40 .usage = "[-dEr] [-c working-directory] " CMD_TARGET_SESSION_USAGE, 41 42 .tflag = CMD_SESSION_WITHPANE, 43 44 .flags = CMD_STARTSERVER, 45 .exec = cmd_attach_session_exec 46 }; 47 48 enum cmd_retval 49 cmd_attach_session(struct cmd_q *cmdq, int dflag, int rflag, const char *cflag, 50 int Eflag) 51 { 52 struct session *s = cmdq->state.tflag.s; 53 struct client *c = cmdq->client, *c_loop; 54 struct winlink *wl = cmdq->state.tflag.wl; 55 struct window_pane *wp = cmdq->state.tflag.wp; 56 const char *update; 57 char *cause, *cwd; 58 struct format_tree *ft; 59 60 if (RB_EMPTY(&sessions)) { 61 cmdq_error(cmdq, "no sessions"); 62 return (CMD_RETURN_ERROR); 63 } 64 65 if (c == NULL) 66 return (CMD_RETURN_NORMAL); 67 if (server_client_check_nested(c)) { 68 cmdq_error(cmdq, "sessions should be nested with care, " 69 "unset $TMUX to force"); 70 return (CMD_RETURN_ERROR); 71 } 72 73 if (wl != NULL) { 74 if (wp != NULL) 75 window_set_active_pane(wp->window, wp); 76 session_set_current(s, wl); 77 } 78 79 if (cflag != NULL) { 80 ft = format_create(cmdq, 0); 81 format_defaults(ft, c, s, wl, wp); 82 cwd = format_expand(ft, cflag); 83 format_free(ft); 84 85 free((void *)s->cwd); 86 s->cwd = cwd; 87 } 88 89 if (c->session != NULL) { 90 if (dflag) { 91 TAILQ_FOREACH(c_loop, &clients, entry) { 92 if (c_loop->session != s || c == c_loop) 93 continue; 94 server_client_detach(c_loop, MSG_DETACH); 95 } 96 } 97 98 if (!Eflag) { 99 update = options_get_string(s->options, 100 "update-environment"); 101 environ_update(update, c->environ, s->environ); 102 } 103 104 c->session = s; 105 server_client_set_key_table(c, NULL); 106 status_timer_start(c); 107 notify_attached_session_changed(c); 108 session_update_activity(s, NULL); 109 gettimeofday(&s->last_attached_time, NULL); 110 server_redraw_client(c); 111 s->curw->flags &= ~WINLINK_ALERTFLAGS; 112 } else { 113 if (server_client_open(c, &cause) != 0) { 114 cmdq_error(cmdq, "open terminal failed: %s", cause); 115 free(cause); 116 return (CMD_RETURN_ERROR); 117 } 118 119 if (rflag) 120 c->flags |= CLIENT_READONLY; 121 122 if (dflag) { 123 TAILQ_FOREACH(c_loop, &clients, entry) { 124 if (c_loop->session != s || c == c_loop) 125 continue; 126 server_client_detach(c_loop, MSG_DETACH); 127 } 128 } 129 130 if (!Eflag) { 131 update = options_get_string(s->options, 132 "update-environment"); 133 environ_update(update, c->environ, s->environ); 134 } 135 136 c->session = s; 137 server_client_set_key_table(c, NULL); 138 status_timer_start(c); 139 notify_attached_session_changed(c); 140 session_update_activity(s, NULL); 141 gettimeofday(&s->last_attached_time, NULL); 142 server_redraw_client(c); 143 s->curw->flags &= ~WINLINK_ALERTFLAGS; 144 145 if (~c->flags & CLIENT_CONTROL) 146 proc_send(c->peer, MSG_READY, -1, NULL, 0); 147 hooks_run(c->session->hooks, c, NULL, "client-attached"); 148 cmdq->client_exit = 0; 149 } 150 recalculate_sizes(); 151 alerts_check_session(s); 152 server_update_socket(); 153 154 return (CMD_RETURN_NORMAL); 155 } 156 157 enum cmd_retval 158 cmd_attach_session_exec(struct cmd *self, struct cmd_q *cmdq) 159 { 160 struct args *args = self->args; 161 162 return (cmd_attach_session(cmdq, args_has(args, 'd'), 163 args_has(args, 'r'), args_get(args, 'c'), args_has(args, 'E'))); 164 } 165