1 /* $OpenBSD: cmd-confirm-before.c,v 1.42 2020/05/16 16:16:07 nicm Exp $ */ 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 */ 18 19 #include <sys/types.h> 20 21 #include <ctype.h> 22 #include <stdlib.h> 23 #include <string.h> 24 25 #include "tmux.h" 26 27 /* 28 * Asks for confirmation before executing a command. 29 */ 30 31 static enum cmd_retval cmd_confirm_before_exec(struct cmd *, 32 struct cmdq_item *); 33 34 static int cmd_confirm_before_callback(struct client *, void *, 35 const char *, int); 36 static void cmd_confirm_before_free(void *); 37 38 const struct cmd_entry cmd_confirm_before_entry = { 39 .name = "confirm-before", 40 .alias = "confirm", 41 42 .args = { "p:t:", 1, 1 }, 43 .usage = "[-p prompt] " CMD_TARGET_CLIENT_USAGE " command", 44 45 .flags = CMD_CLIENT_TFLAG, 46 .exec = cmd_confirm_before_exec 47 }; 48 49 struct cmd_confirm_before_data { 50 char *cmd; 51 }; 52 53 static enum cmd_retval 54 cmd_confirm_before_exec(struct cmd *self, struct cmdq_item *item) 55 { 56 struct args *args = cmd_get_args(self); 57 struct cmd_confirm_before_data *cdata; 58 struct client *tc = cmdq_get_target_client(item); 59 struct cmd_find_state *target = cmdq_get_target(item); 60 char *cmd, *copy, *new_prompt, *ptr; 61 const char *prompt; 62 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); 69 free(copy); 70 } 71 72 cdata = xmalloc(sizeof *cdata); 73 cdata->cmd = xstrdup(args->argv[0]); 74 75 status_prompt_set(tc, target, new_prompt, NULL, 76 cmd_confirm_before_callback, cmd_confirm_before_free, cdata, 77 PROMPT_SINGLE); 78 79 free(new_prompt); 80 return (CMD_RETURN_NORMAL); 81 } 82 83 static int 84 cmd_confirm_before_callback(struct client *c, void *data, const char *s, 85 __unused int done) 86 { 87 struct cmd_confirm_before_data *cdata = data; 88 char *error; 89 enum cmd_parse_status status; 90 91 if (c->flags & CLIENT_DEAD) 92 return (0); 93 94 if (s == NULL || *s == '\0') 95 return (0); 96 if (tolower((u_char)s[0]) != 'y' || s[1] != '\0') 97 return (0); 98 99 status = cmd_parse_and_append(cdata->cmd, NULL, c, NULL, &error); 100 if (status == CMD_PARSE_ERROR) { 101 cmdq_append(c, cmdq_get_error(error)); 102 free(error); 103 } 104 105 return (0); 106 } 107 108 static void 109 cmd_confirm_before_free(void *data) 110 { 111 struct cmd_confirm_before_data *cdata = data; 112 113 free(cdata->cmd); 114 free(cdata); 115 } 116