2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2015, Dave Pare, Jeff Bailey, Thomas Ruschak,
4 * Ken Stevens, Steve McClure, Markus Armbruster
6 * Empire is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
21 * See files README, COPYING and CREDITS in the root of the source
22 * tree for related information and legal notices. It is expected
23 * that future projects/authors will amend these files as needed.
27 * secure.c: Check redir etc. to protect against tampering deity
29 * Known contributors to this file:
30 * Markus Armbruster, 2007-2015
40 static struct ring recent_input;
43 * Remember line of input @inp for a while.
44 * It must end with a newline.
49 size_t len = strlen(inp);
52 assert(len && inp[len - 1] == '\n');
54 while (ring_putm(&recent_input, inp, len) < 0) {
55 eol = ring_search(&recent_input, "\n");
57 ring_discard(&recent_input, eol + 1);
62 * Can you still remember a line of input that ends with @tail?
63 * It must end with a newline.
66 seen_input(char *tail)
68 size_t len = strlen(tail);
70 assert(len && tail[len - 1] == '\n');
71 return ring_search(&recent_input, tail) >= 0;