2 * Copyright (c) 2000-2002
3 * Chris Adams <cmadams@iruntheinter.net>
4 * written for HiWAAY Internet Services
5 * SPDX-License-Identifier: GPL-2.0-or-later
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
24 * Adapted for Exim by Tamas TEVESZ <ice@extreme.hu>
25 * Further adapted by Philip Hazel to cut out this function for operating
26 * systems that have a built-in version.
29 /* The OS has a built-in crypt16(). Some compilers don't like compiling empty
30 modules, so keep them happy with a dummy when skipping the rest. */
35 static void dummy(int x) { dummy(x-1); }
38 /* The OS doesn't have a built-in crypt16(). Compile this one. */
49 crypt16(char *key, char *salt)
51 static char res[25]; /* Not threadsafe; like crypt() */
55 /* Clear the string of any previous data */
56 memset (res, 0, sizeof (res));
58 /* crypt the first part */
59 if (!(p = crypt (key, salt))) return NULL;
65 * the first two characters of the first block (not counting
66 * the salt) make up the new salt */
68 strncpy (s2, res+2, 2);
69 p = crypt (key+8, s2);
70 strncpy (res+13, p+2, 11);
71 memset (s2, 0, sizeof(s2));
78 /* End of crypt16.c */