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tmux 2.4

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