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Annotation of src/usr.bin/tmux/cmd-confirm-before.c, Revision 1.40

1.40    ! nicm        1: /* $OpenBSD: cmd-confirm-before.c,v 1.39 2020/04/13 15:55:51 nicm Exp $ */
1.1       nicm        2:
                      3: /*
                      4:  * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
                      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:  */
1.22      nicm       18:
                     19: #include <sys/types.h>
1.1       nicm       20:
                     21: #include <ctype.h>
1.13      nicm       22: #include <stdlib.h>
1.1       nicm       23: #include <string.h>
                     24:
                     25: #include "tmux.h"
                     26:
                     27: /*
                     28:  * Asks for confirmation before executing a command.
                     29:  */
                     30:
1.31      nicm       31: static enum cmd_retval cmd_confirm_before_exec(struct cmd *,
                     32:                            struct cmdq_item *);
1.1       nicm       33:
1.35      nicm       34: static int     cmd_confirm_before_callback(struct client *, void *,
                     35:                    const char *, int);
1.31      nicm       36: static void    cmd_confirm_before_free(void *);
1.1       nicm       37:
                     38: const struct cmd_entry cmd_confirm_before_entry = {
1.27      nicm       39:        .name = "confirm-before",
                     40:        .alias = "confirm",
                     41:
                     42:        .args = { "p:t:", 1, 1 },
                     43:        .usage = "[-p prompt] " CMD_TARGET_CLIENT_USAGE " command",
                     44:
1.28      nicm       45:        .flags = 0,
1.27      nicm       46:        .exec = cmd_confirm_before_exec
1.1       nicm       47: };
                     48:
1.4       nicm       49: struct cmd_confirm_before_data {
1.35      nicm       50:        char    *cmd;
1.4       nicm       51: };
1.1       nicm       52:
1.29      nicm       53: static enum cmd_retval
1.31      nicm       54: cmd_confirm_before_exec(struct cmd *self, struct cmdq_item *item)
1.1       nicm       55: {
1.38      nicm       56:        struct args                     *args = cmd_get_args(self);
1.1       nicm       57:        struct cmd_confirm_before_data  *cdata;
1.34      nicm       58:        struct client                   *c;
1.12      nicm       59:        char                            *cmd, *copy, *new_prompt, *ptr;
                     60:        const char                      *prompt;
1.34      nicm       61:
                     62:        if ((c = cmd_find_client(item, args_get(args, 't'), 0)) == NULL)
                     63:                return (CMD_RETURN_ERROR);
1.1       nicm       64:
1.12      nicm       65:        if ((prompt = args_get(args, 'p')) != NULL)
                     66:                xasprintf(&new_prompt, "%s ", prompt);
                     67:        else {
                     68:                ptr = copy = xstrdup(args->argv[0]);
                     69:                cmd = strsep(&ptr, " \t");
                     70:                xasprintf(&new_prompt, "Confirm '%s'? (y/n) ", cmd);
1.13      nicm       71:                free(copy);
1.12      nicm       72:        }
1.1       nicm       73:
                     74:        cdata = xmalloc(sizeof *cdata);
1.10      nicm       75:        cdata->cmd = xstrdup(args->argv[0]);
1.19      nicm       76:
                     77:        status_prompt_set(c, new_prompt, NULL,
1.12      nicm       78:            cmd_confirm_before_callback, cmd_confirm_before_free, cdata,
                     79:            PROMPT_SINGLE);
1.1       nicm       80:
1.13      nicm       81:        free(new_prompt);
1.19      nicm       82:        return (CMD_RETURN_NORMAL);
1.1       nicm       83: }
                     84:
1.29      nicm       85: static int
1.35      nicm       86: cmd_confirm_before_callback(struct client *c, void *data, const char *s,
                     87:     __unused int done)
1.1       nicm       88: {
                     89:        struct cmd_confirm_before_data  *cdata = data;
1.40    ! nicm       90:        char                            *error;
        !            91:        enum cmd_parse_status            status;
1.1       nicm       92:
1.19      nicm       93:        if (c->flags & CLIENT_DEAD)
                     94:                return (0);
                     95:
1.7       nicm       96:        if (s == NULL || *s == '\0')
                     97:                return (0);
1.37      nicm       98:        if (tolower((u_char)s[0]) != 'y' || s[1] != '\0')
1.4       nicm       99:                return (0);
1.1       nicm      100:
1.40    ! nicm      101:        status = cmd_parse_and_append(cdata->cmd, NULL, c, NULL, &error);
        !           102:        if (status == CMD_PARSE_ERROR) {
        !           103:                cmdq_append(c, cmdq_get_error(error));
        !           104:                free(error);
1.1       nicm      105:        }
                    106:
1.4       nicm      107:        return (0);
                    108: }
                    109:
1.29      nicm      110: static void
1.4       nicm      111: cmd_confirm_before_free(void *data)
                    112: {
                    113:        struct cmd_confirm_before_data  *cdata = data;
                    114:
1.13      nicm      115:        free(cdata->cmd);
                    116:        free(cdata);
1.1       nicm      117: }