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29b1b2fb5e
Infrastructure and commands to manage the environment for processes started within tmux. There is a global environment, copied from the external environment when the server is started and each session has an (initially empty) session environment which overrides it. New commands set-environment and show-environment manipulate or display the environments. A new session option, update-environment, is a space-separated list of variables which are updated from the external environment into the session environment every time a new session is created - the default is DISPLAY.
107 lines
3.0 KiB
C
107 lines
3.0 KiB
C
/* $Id: cmd-attach-session.c,v 1.32 2009-08-09 17:48:55 tcunha Exp $ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include "tmux.h"
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/*
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* Attach existing session to the current terminal.
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*/
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int cmd_attach_session_exec(struct cmd *, struct cmd_ctx *);
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const struct cmd_entry cmd_attach_session_entry = {
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"attach-session", "attach",
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"[-d] " CMD_TARGET_SESSION_USAGE,
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CMD_CANTNEST|CMD_STARTSERVER|CMD_SENDENVIRON, CMD_CHFLAG('d'),
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cmd_target_init,
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cmd_target_parse,
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cmd_attach_session_exec,
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cmd_target_free,
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cmd_target_print
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};
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int
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cmd_attach_session_exec(struct cmd *self, struct cmd_ctx *ctx)
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{
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struct cmd_target_data *data = self->data;
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struct session *s;
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struct client *c;
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const char *update;
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char *overrides, *cause;
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u_int i;
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if (ARRAY_LENGTH(&sessions) == 0) {
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ctx->error(ctx, "no sessions");
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return (-1);
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}
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if ((s = cmd_find_session(ctx, data->target)) == NULL)
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return (-1);
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if (ctx->cmdclient == NULL && ctx->curclient == NULL)
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return (0);
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if (ctx->cmdclient == NULL) {
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if (data->chflags & CMD_CHFLAG('d')) {
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/*
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* Can't use server_write_session in case attaching to
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* the same session as currently attached to.
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*/
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c == NULL || c->session != s)
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continue;
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if (c == ctx->curclient)
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continue;
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server_write_client(c, MSG_DETACH, NULL, 0);
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}
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}
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ctx->curclient->session = s;
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server_redraw_client(ctx->curclient);
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} else {
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if (!(ctx->cmdclient->flags & CLIENT_TERMINAL)) {
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ctx->error(ctx, "not a terminal");
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return (-1);
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}
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overrides =
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options_get_string(&s->options, "terminal-overrides");
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if (tty_open(&ctx->cmdclient->tty, overrides, &cause) != 0) {
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ctx->error(ctx, "terminal open failed: %s", cause);
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xfree(cause);
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return (-1);
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}
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if (data->chflags & CMD_CHFLAG('d'))
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server_write_session(s, MSG_DETACH, NULL, 0);
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ctx->cmdclient->session = s;
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server_write_client(ctx->cmdclient, MSG_READY, NULL, 0);
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update = options_get_string(&s->options, "update-environment");
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environ_update(update, &ctx->cmdclient->environ, &s->environ);
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server_redraw_client(ctx->cmdclient);
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}
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recalculate_sizes();
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return (1); /* 1 means don't tell command client to exit */
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}
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