1 /* $OpenBSD: cmd-attach-session.c,v 1.24 2013/03/24 09:58:40 nicm Exp $ */ 2 3 /* 4 * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net> 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 <stdlib.h> 22 23 #include "tmux.h" 24 25 /* 26 * Attach existing session to the current terminal. 27 */ 28 29 enum cmd_retval cmd_attach_session_exec(struct cmd *, struct cmd_q *); 30 31 const struct cmd_entry cmd_attach_session_entry = { 32 "attach-session", "attach", 33 "drt:", 0, 0, 34 "[-dr] " CMD_TARGET_SESSION_USAGE, 35 CMD_CANTNEST|CMD_STARTSERVER|CMD_SENDENVIRON, 36 NULL, 37 NULL, 38 cmd_attach_session_exec 39 }; 40 41 enum cmd_retval 42 cmd_attach_session(struct cmd_q *cmdq, const char* tflag, int dflag, int rflag) 43 { 44 struct session *s; 45 struct client *c; 46 const char *update; 47 char *cause; 48 u_int i; 49 50 if (RB_EMPTY(&sessions)) { 51 cmdq_error(cmdq, "no sessions"); 52 return (CMD_RETURN_ERROR); 53 } 54 55 if ((s = cmd_find_session(cmdq, tflag, 1)) == NULL) 56 return (CMD_RETURN_ERROR); 57 58 if (cmdq->client == NULL) 59 return (CMD_RETURN_NORMAL); 60 61 if (cmdq->client->session != NULL) { 62 if (dflag) { 63 /* 64 * Can't use server_write_session in case attaching to 65 * the same session as currently attached to. 66 */ 67 for (i = 0; i < ARRAY_LENGTH(&clients); i++) { 68 c = ARRAY_ITEM(&clients, i); 69 if (c == NULL || c->session != s) 70 continue; 71 if (c == cmdq->client) 72 continue; 73 server_write_client(c, MSG_DETACH, NULL, 0); 74 } 75 } 76 77 cmdq->client->session = s; 78 notify_attached_session_changed(cmdq->client); 79 session_update_activity(s); 80 server_redraw_client(cmdq->client); 81 s->curw->flags &= ~WINLINK_ALERTFLAGS; 82 } else { 83 if (server_client_open(cmdq->client, s, &cause) != 0) { 84 cmdq_error(cmdq, "open terminal failed: %s", cause); 85 free(cause); 86 return (CMD_RETURN_ERROR); 87 } 88 89 if (rflag) 90 cmdq->client->flags |= CLIENT_READONLY; 91 92 if (dflag) 93 server_write_session(s, MSG_DETACH, NULL, 0); 94 95 update = options_get_string(&s->options, "update-environment"); 96 environ_update(update, &cmdq->client->environ, &s->environ); 97 98 cmdq->client->session = s; 99 notify_attached_session_changed(cmdq->client); 100 session_update_activity(s); 101 server_redraw_client(cmdq->client); 102 s->curw->flags &= ~WINLINK_ALERTFLAGS; 103 104 server_write_ready(cmdq->client); 105 cmdq->client_exit = 0; 106 } 107 recalculate_sizes(); 108 server_update_socket(); 109 110 return (CMD_RETURN_NORMAL); 111 } 112 113 enum cmd_retval 114 cmd_attach_session_exec(struct cmd *self, struct cmd_q *cmdq) 115 { 116 struct args *args = self->args; 117 118 return (cmd_attach_session(cmdq, args_get(args, 't'), 119 args_has(args, 'd'), args_has(args, 'r'))); 120 } 121