1 /* $OpenBSD: cmd-attach-session.c,v 1.8 2009/08/08 21:52:43 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 "tmux.h" 22 23 /* 24 * Attach existing session to the current terminal. 25 */ 26 27 int cmd_attach_session_exec(struct cmd *, struct cmd_ctx *); 28 29 const struct cmd_entry cmd_attach_session_entry = { 30 "attach-session", "attach", 31 "[-d] " CMD_TARGET_SESSION_USAGE, 32 CMD_CANTNEST|CMD_STARTSERVER|CMD_SENDENVIRON, CMD_CHFLAG('d'), 33 cmd_target_init, 34 cmd_target_parse, 35 cmd_attach_session_exec, 36 cmd_target_free, 37 cmd_target_print 38 }; 39 40 int 41 cmd_attach_session_exec(struct cmd *self, struct cmd_ctx *ctx) 42 { 43 struct cmd_target_data *data = self->data; 44 struct session *s; 45 struct client *c; 46 const char *update; 47 char *overrides, *cause; 48 u_int i; 49 50 if (ARRAY_LENGTH(&sessions) == 0) { 51 ctx->error(ctx, "no sessions"); 52 return (-1); 53 } 54 if ((s = cmd_find_session(ctx, data->target)) == NULL) 55 return (-1); 56 57 if (ctx->cmdclient == NULL && ctx->curclient == NULL) 58 return (0); 59 60 if (ctx->cmdclient == NULL) { 61 if (data->chflags & CMD_CHFLAG('d')) { 62 /* 63 * Can't use server_write_session in case attaching to 64 * the same session as currently attached to. 65 */ 66 for (i = 0; i < ARRAY_LENGTH(&clients); i++) { 67 c = ARRAY_ITEM(&clients, i); 68 if (c == NULL || c->session != s) 69 continue; 70 if (c == ctx->curclient) 71 continue; 72 server_write_client(c, MSG_DETACH, NULL, 0); 73 } 74 } 75 76 ctx->curclient->session = s; 77 server_redraw_client(ctx->curclient); 78 } else { 79 if (!(ctx->cmdclient->flags & CLIENT_TERMINAL)) { 80 ctx->error(ctx, "not a terminal"); 81 return (-1); 82 } 83 84 overrides = 85 options_get_string(&s->options, "terminal-overrides"); 86 if (tty_open(&ctx->cmdclient->tty, overrides, &cause) != 0) { 87 ctx->error(ctx, "terminal open failed: %s", cause); 88 xfree(cause); 89 return (-1); 90 } 91 92 if (data->chflags & CMD_CHFLAG('d')) 93 server_write_session(s, MSG_DETACH, NULL, 0); 94 95 ctx->cmdclient->session = s; 96 server_write_client(ctx->cmdclient, MSG_READY, NULL, 0); 97 98 update = options_get_string(&s->options, "update-environment"); 99 environ_update(update, &ctx->cmdclient->environ, &s->environ); 100 101 server_redraw_client(ctx->cmdclient); 102 } 103 recalculate_sizes(); 104 105 return (1); /* 1 means don't tell command client to exit */ 106 } 107