1 /* $OpenBSD: cmd-attach-session.c,v 1.22 2012/07/11 07:10:15 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_ctx *); 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_exec(struct cmd *self, struct cmd_ctx *ctx) 43 { 44 struct args *args = self->args; 45 struct session *s; 46 struct client *c; 47 const char *update; 48 char *cause; 49 u_int i; 50 51 if (RB_EMPTY(&sessions)) { 52 ctx->error(ctx, "no sessions"); 53 return (CMD_RETURN_ERROR); 54 } 55 56 if ((s = cmd_find_session(ctx, args_get(args, 't'), 1)) == NULL) 57 return (CMD_RETURN_ERROR); 58 59 if (ctx->cmdclient == NULL && ctx->curclient == NULL) 60 return (CMD_RETURN_NORMAL); 61 62 if (ctx->cmdclient == NULL) { 63 if (args_has(self->args, 'd')) { 64 /* 65 * Can't use server_write_session in case attaching to 66 * the same session as currently attached to. 67 */ 68 for (i = 0; i < ARRAY_LENGTH(&clients); i++) { 69 c = ARRAY_ITEM(&clients, i); 70 if (c == NULL || c->session != s) 71 continue; 72 if (c == ctx->curclient) 73 continue; 74 server_write_client(c, MSG_DETACH, NULL, 0); 75 } 76 } 77 78 ctx->curclient->session = s; 79 notify_attached_session_changed(ctx->curclient); 80 session_update_activity(s); 81 server_redraw_client(ctx->curclient); 82 s->curw->flags &= ~WINLINK_ALERTFLAGS; 83 } else { 84 if (server_client_open(ctx->cmdclient, s, &cause) != 0) { 85 ctx->error(ctx, "open terminal failed: %s", cause); 86 free(cause); 87 return (CMD_RETURN_ERROR); 88 } 89 90 if (args_has(self->args, 'r')) 91 ctx->cmdclient->flags |= CLIENT_READONLY; 92 93 if (args_has(self->args, 'd')) 94 server_write_session(s, MSG_DETACH, NULL, 0); 95 96 ctx->cmdclient->session = s; 97 notify_attached_session_changed(ctx->cmdclient); 98 session_update_activity(s); 99 server_write_ready(ctx->cmdclient); 100 101 update = options_get_string(&s->options, "update-environment"); 102 environ_update(update, &ctx->cmdclient->environ, &s->environ); 103 104 server_redraw_client(ctx->cmdclient); 105 s->curw->flags &= ~WINLINK_ALERTFLAGS; 106 } 107 recalculate_sizes(); 108 server_update_socket(); 109 110 return (CMD_RETURN_ATTACH); 111 } 112