1 /* $OpenBSD: cmd-confirm-before.c,v 1.28 2015/12/14 00:31:54 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 .name = "confirm-before", 38 .alias = "confirm", 39 40 .args = { "p:t:", 1, 1 }, 41 .usage = "[-p prompt] " CMD_TARGET_CLIENT_USAGE " command", 42 43 .tflag = CMD_CLIENT, 44 45 .flags = 0, 46 .exec = cmd_confirm_before_exec 47 }; 48 49 struct cmd_confirm_before_data { 50 char *cmd; 51 struct client *client; 52 }; 53 54 enum cmd_retval 55 cmd_confirm_before_exec(struct cmd *self, struct cmd_q *cmdq) 56 { 57 struct args *args = self->args; 58 struct cmd_confirm_before_data *cdata; 59 struct client *c = cmdq->state.c; 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 cdata->client = c; 76 cdata->client->references++; 77 78 status_prompt_set(c, new_prompt, NULL, 79 cmd_confirm_before_callback, cmd_confirm_before_free, cdata, 80 PROMPT_SINGLE); 81 82 free(new_prompt); 83 return (CMD_RETURN_NORMAL); 84 } 85 86 int 87 cmd_confirm_before_callback(void *data, const char *s) 88 { 89 struct cmd_confirm_before_data *cdata = data; 90 struct client *c = cdata->client; 91 struct cmd_list *cmdlist; 92 char *cause; 93 94 if (c->flags & CLIENT_DEAD) 95 return (0); 96 97 if (s == NULL || *s == '\0') 98 return (0); 99 if (tolower((u_char) s[0]) != 'y' || s[1] != '\0') 100 return (0); 101 102 if (cmd_string_parse(cdata->cmd, &cmdlist, NULL, 0, &cause) != 0) { 103 if (cause != NULL) { 104 cmdq_error(c->cmdq, "%s", cause); 105 free(cause); 106 } 107 return (0); 108 } 109 110 cmdq_run(c->cmdq, cmdlist, NULL); 111 cmd_list_free(cmdlist); 112 113 return (0); 114 } 115 116 void 117 cmd_confirm_before_free(void *data) 118 { 119 struct cmd_confirm_before_data *cdata = data; 120 struct client *c = cdata->client; 121 122 server_client_unref(c); 123 124 free(cdata->cmd); 125 free(cdata); 126 } 127