1 /* $OpenBSD: cmd-confirm-before.c,v 1.22 2014/10/20 23:27:14 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 enum cmd_retval cmd_confirm_before_exec(struct cmd *, struct cmd_q *); 32 33 int cmd_confirm_before_callback(void *, const char *); 34 void cmd_confirm_before_free(void *); 35 36 const struct cmd_entry cmd_confirm_before_entry = { 37 "confirm-before", "confirm", 38 "p:t:", 1, 1, 39 "[-p prompt] " CMD_TARGET_CLIENT_USAGE " command", 40 0, 41 cmd_confirm_before_exec 42 }; 43 44 struct cmd_confirm_before_data { 45 char *cmd; 46 struct client *client; 47 }; 48 49 enum cmd_retval 50 cmd_confirm_before_exec(struct cmd *self, struct cmd_q *cmdq) 51 { 52 struct args *args = self->args; 53 struct cmd_confirm_before_data *cdata; 54 struct client *c; 55 char *cmd, *copy, *new_prompt, *ptr; 56 const char *prompt; 57 58 if ((c = cmd_find_client(cmdq, args_get(args, 't'), 0)) == NULL) 59 return (CMD_RETURN_ERROR); 60 61 if ((prompt = args_get(args, 'p')) != NULL) 62 xasprintf(&new_prompt, "%s ", prompt); 63 else { 64 ptr = copy = xstrdup(args->argv[0]); 65 cmd = strsep(&ptr, " \t"); 66 xasprintf(&new_prompt, "Confirm '%s'? (y/n) ", cmd); 67 free(copy); 68 } 69 70 cdata = xmalloc(sizeof *cdata); 71 cdata->cmd = xstrdup(args->argv[0]); 72 73 cdata->client = c; 74 cdata->client->references++; 75 76 status_prompt_set(c, new_prompt, NULL, 77 cmd_confirm_before_callback, cmd_confirm_before_free, cdata, 78 PROMPT_SINGLE); 79 80 free(new_prompt); 81 return (CMD_RETURN_NORMAL); 82 } 83 84 int 85 cmd_confirm_before_callback(void *data, const char *s) 86 { 87 struct cmd_confirm_before_data *cdata = data; 88 struct client *c = cdata->client; 89 struct cmd_list *cmdlist; 90 char *cause; 91 92 if (c->flags & CLIENT_DEAD) 93 return (0); 94 95 if (s == NULL || *s == '\0') 96 return (0); 97 if (tolower((u_char) s[0]) != 'y' || s[1] != '\0') 98 return (0); 99 100 if (cmd_string_parse(cdata->cmd, &cmdlist, NULL, 0, &cause) != 0) { 101 if (cause != NULL) { 102 cmdq_error(c->cmdq, "%s", cause); 103 free(cause); 104 } 105 return (0); 106 } 107 108 cmdq_run(c->cmdq, cmdlist); 109 cmd_list_free(cmdlist); 110 111 return (0); 112 } 113 114 void 115 cmd_confirm_before_free(void *data) 116 { 117 struct cmd_confirm_before_data *cdata = data; 118 struct client *c = cdata->client; 119 120 c->references--; 121 122 free(cdata->cmd); 123 free(cdata); 124 } 125