tmux/cmd-attach-session.c

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/* $Id: cmd-attach-session.c,v 1.13 2008-06-02 21:08:36 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <getopt.h>
#include "tmux.h"
/*
* Attach existing session to the current terminal.
*/
int cmd_attach_session_parse(struct cmd *, void **, int, char **, char **);
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void cmd_attach_session_exec(void *, struct cmd_ctx *);
void cmd_attach_session_send(void *, struct buffer *);
void cmd_attach_session_recv(void **, struct buffer *);
void cmd_attach_session_free(void *);
struct cmd_attach_session_data {
char *sname;
int flag_detach;
};
const struct cmd_entry cmd_attach_session_entry = {
"attach-session", "attach",
"[-d] [-s session-name]",
CMD_CANTNEST,
cmd_attach_session_parse,
cmd_attach_session_exec,
cmd_attach_session_send,
cmd_attach_session_recv,
cmd_attach_session_free
};
int
cmd_attach_session_parse(
struct cmd *self, void **ptr, int argc, char **argv, char **cause)
{
struct cmd_attach_session_data *data;
int opt;
*ptr = data = xmalloc(sizeof *data);
data->sname = NULL;
data->flag_detach = 0;
while ((opt = getopt(argc, argv, "ds:")) != EOF) {
switch (opt) {
case 'd':
data->flag_detach = 1;
break;
case 's':
data->sname = xstrdup(optarg);
break;
default:
goto usage;
}
}
argc -= optind;
argv += optind;
if (argc != 0)
goto usage;
return (0);
usage:
xasprintf(cause, "usage: %s %s", self->entry->name, self->entry->usage);
cmd_attach_session_free(data);
return (-1);
}
void
cmd_attach_session_exec(void *ptr, struct cmd_ctx *ctx)
{
struct cmd_attach_session_data *data = ptr;
struct session *s;
char *cause;
if (ctx->flags & CMD_KEY)
return;
if ((s = cmd_find_session(ctx, data->sname)) == NULL)
return;
if (!(ctx->cmdclient->flags & CLIENT_TERMINAL)) {
ctx->error(ctx, "not a terminal");
return;
}
if (tty_open(&ctx->cmdclient->tty, &cause) != 0) {
ctx->error(ctx, "%s", cause);
xfree(cause);
return;
}
if (data->flag_detach)
server_write_session(s, MSG_DETACH, NULL, 0);
ctx->cmdclient->session = s;
server_write_client(ctx->cmdclient, MSG_READY, NULL, 0);
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recalculate_sizes();
server_redraw_client(ctx->cmdclient);
}
void
cmd_attach_session_send(void *ptr, struct buffer *b)
{
struct cmd_attach_session_data *data = ptr;
buffer_write(b, data, sizeof *data);
cmd_send_string(b, data->sname);
}
void
cmd_attach_session_recv(void **ptr, struct buffer *b)
{
struct cmd_attach_session_data *data;
*ptr = data = xmalloc(sizeof *data);
buffer_read(b, data, sizeof *data);
data->sname = cmd_recv_string(b);
}
void
cmd_attach_session_free(void *ptr)
{
struct cmd_attach_session_data *data = ptr;
if (data->sname != NULL)
xfree(data->sname);
xfree(data);
}