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/* $OpenBSD: cmd-confirm-before.c,v 1.55 2024/05/15 08:39:30 nicm Exp $ */
/*
* Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
*
* 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 <ctype.h>
#include <stdlib.h>
#include <string.h>
#include "tmux.h"
/*
* Asks for confirmation before executing a command.
*/
static enum args_parse_type cmd_confirm_before_args_parse(struct args *,
u_int, char **);
static enum cmd_retval cmd_confirm_before_exec(struct cmd *,
struct cmdq_item *);
static int cmd_confirm_before_callback(struct client *, void *,
const char *, int);
static void cmd_confirm_before_free(void *);
const struct cmd_entry cmd_confirm_before_entry = {
.name = "confirm-before",
.alias = "confirm",
.args = { "bc:p:t:y", 1, 1, cmd_confirm_before_args_parse },
.usage = "[-by] [-c confirm_key] [-p prompt] " CMD_TARGET_CLIENT_USAGE
" command",
.flags = CMD_CLIENT_TFLAG,
.exec = cmd_confirm_before_exec
};
struct cmd_confirm_before_data {
struct cmdq_item *item;
struct cmd_list *cmdlist;
u_char confirm_key;
int default_yes;
};
static enum args_parse_type
cmd_confirm_before_args_parse(__unused struct args *args, __unused u_int idx,
__unused char **cause)
{
return (ARGS_PARSE_COMMANDS_OR_STRING);
}
static enum cmd_retval
cmd_confirm_before_exec(struct cmd *self, struct cmdq_item *item)
{
struct args *args = cmd_get_args(self);
struct cmd_confirm_before_data *cdata;
struct client *tc = cmdq_get_target_client(item);
struct cmd_find_state *target = cmdq_get_target(item);
char *new_prompt;
const char *confirm_key, *prompt, *cmd;
int wait = !args_has(args, 'b');
cdata = xcalloc(1, sizeof *cdata);
cdata->cmdlist = args_make_commands_now(self, item, 0, 1);
if (cdata->cmdlist == NULL) {
free(cdata);
return (CMD_RETURN_ERROR);
}
if (wait)
cdata->item = item;
cdata->default_yes = args_has(args, 'y');
if ((confirm_key = args_get(args, 'c')) != NULL) {
if (confirm_key[1] == '\0' &&
confirm_key[0] > 31 &&
confirm_key[0] < 127)
cdata->confirm_key = confirm_key[0];
else {
cmdq_error(item, "invalid confirm key");
free(cdata);
return (CMD_RETURN_ERROR);
}
}
else
cdata->confirm_key = 'y';
if ((prompt = args_get(args, 'p')) != NULL)
xasprintf(&new_prompt, "%s ", prompt);
else {
cmd = cmd_get_entry(cmd_list_first(cdata->cmdlist))->name;
xasprintf(&new_prompt, "Confirm '%s'? (%c/n) ", cmd,
cdata->confirm_key);
}
status_prompt_set(tc, target, new_prompt, NULL,
cmd_confirm_before_callback, cmd_confirm_before_free, cdata,
PROMPT_SINGLE, PROMPT_TYPE_COMMAND);
free(new_prompt);
if (!wait)
return (CMD_RETURN_NORMAL);
return (CMD_RETURN_WAIT);
}
static int
cmd_confirm_before_callback(struct client *c, void *data, const char *s,
__unused int done)
{
struct cmd_confirm_before_data *cdata = data;
struct cmdq_item *item = cdata->item, *new_item;
int retcode = 1;
if (c->flags & CLIENT_DEAD)
goto out;
if (s == NULL)
goto out;
if (s[0] != cdata->confirm_key && (s[0] != '\0' || !cdata->default_yes))
goto out;
retcode = 0;
if (item == NULL) {
new_item = cmdq_get_command(cdata->cmdlist, NULL);
cmdq_append(c, new_item);
} else {
new_item = cmdq_get_command(cdata->cmdlist,
cmdq_get_state(item));
cmdq_insert_after(item, new_item);
}
out:
if (item != NULL) {
if (cmdq_get_client(item) != NULL &&
cmdq_get_client(item)->session == NULL)
cmdq_get_client(item)->retval = retcode;
cmdq_continue(item);
}
return (0);
}
static void
cmd_confirm_before_free(void *data)
{
struct cmd_confirm_before_data *cdata = data;
cmd_list_free(cdata->cmdlist);
free(cdata);
}
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