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Annotation of src/usr.bin/tmux/cmd-confirm-before.c, Revision 1.29

1.29    ! nicm        1: /* $OpenBSD: cmd-confirm-before.c,v 1.28 2015/12/14 00:31:54 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:
1.29    ! nicm       31: static enum cmd_retval  cmd_confirm_before_exec(struct cmd *, struct cmd_q *);
1.1       nicm       32:
1.29    ! nicm       33: static int              cmd_confirm_before_callback(void *, const char *);
        !            34: static void             cmd_confirm_before_free(void *);
1.1       nicm       35:
                     36: const struct cmd_entry cmd_confirm_before_entry = {
1.27      nicm       37:        .name = "confirm-before",
                     38:        .alias = "confirm",
                     39:
                     40:        .args = { "p:t:", 1, 1 },
                     41:        .usage = "[-p prompt] " CMD_TARGET_CLIENT_USAGE " command",
                     42:
1.28      nicm       43:        .tflag = CMD_CLIENT,
                     44:
                     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 {
                     50:        char            *cmd;
1.19      nicm       51:        struct client   *client;
1.4       nicm       52: };
1.1       nicm       53:
1.29    ! nicm       54: static enum cmd_retval
1.19      nicm       55: cmd_confirm_before_exec(struct cmd *self, struct cmd_q *cmdq)
1.1       nicm       56: {
1.10      nicm       57:        struct args                     *args = self->args;
1.1       nicm       58:        struct cmd_confirm_before_data  *cdata;
1.26      nicm       59:        struct client                   *c = cmdq->state.c;
1.12      nicm       60:        char                            *cmd, *copy, *new_prompt, *ptr;
                     61:        const char                      *prompt;
1.1       nicm       62:
1.12      nicm       63:        if ((prompt = args_get(args, 'p')) != NULL)
                     64:                xasprintf(&new_prompt, "%s ", prompt);
                     65:        else {
                     66:                ptr = copy = xstrdup(args->argv[0]);
                     67:                cmd = strsep(&ptr, " \t");
                     68:                xasprintf(&new_prompt, "Confirm '%s'? (y/n) ", cmd);
1.13      nicm       69:                free(copy);
1.12      nicm       70:        }
1.1       nicm       71:
                     72:        cdata = xmalloc(sizeof *cdata);
1.10      nicm       73:        cdata->cmd = xstrdup(args->argv[0]);
1.19      nicm       74:
                     75:        cdata->client = c;
                     76:        cdata->client->references++;
                     77:
                     78:        status_prompt_set(c, new_prompt, NULL,
1.12      nicm       79:            cmd_confirm_before_callback, cmd_confirm_before_free, cdata,
                     80:            PROMPT_SINGLE);
1.1       nicm       81:
1.13      nicm       82:        free(new_prompt);
1.19      nicm       83:        return (CMD_RETURN_NORMAL);
1.1       nicm       84: }
                     85:
1.29    ! nicm       86: static int
1.1       nicm       87: cmd_confirm_before_callback(void *data, const char *s)
                     88: {
                     89:        struct cmd_confirm_before_data  *cdata = data;
1.19      nicm       90:        struct client                   *c = cdata->client;
1.1       nicm       91:        struct cmd_list                 *cmdlist;
                     92:        char                            *cause;
                     93:
1.19      nicm       94:        if (c->flags & CLIENT_DEAD)
                     95:                return (0);
                     96:
1.7       nicm       97:        if (s == NULL || *s == '\0')
                     98:                return (0);
                     99:        if (tolower((u_char) s[0]) != 'y' || s[1] != '\0')
1.4       nicm      100:                return (0);
1.1       nicm      101:
1.19      nicm      102:        if (cmd_string_parse(cdata->cmd, &cmdlist, NULL, 0, &cause) != 0) {
1.1       nicm      103:                if (cause != NULL) {
1.19      nicm      104:                        cmdq_error(c->cmdq, "%s", cause);
1.13      nicm      105:                        free(cause);
1.1       nicm      106:                }
1.4       nicm      107:                return (0);
1.1       nicm      108:        }
                    109:
1.23      nicm      110:        cmdq_run(c->cmdq, cmdlist, NULL);
1.1       nicm      111:        cmd_list_free(cmdlist);
                    112:
1.4       nicm      113:        return (0);
                    114: }
                    115:
1.29    ! nicm      116: static void
1.4       nicm      117: cmd_confirm_before_free(void *data)
                    118: {
                    119:        struct cmd_confirm_before_data  *cdata = data;
1.19      nicm      120:        struct client                   *c = cdata->client;
                    121:
1.25      nicm      122:        server_client_unref(c);
1.4       nicm      123:
1.13      nicm      124:        free(cdata->cmd);
                    125:        free(cdata);
1.1       nicm      126: }