1 /* 2 * Copyright (c) 1999 3 * Mark Murray. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY MARK MURRAY AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL MARK MURRAY OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: src/lib/libcrypt/crypt.c,v 1.14.2.2 2001/05/24 12:20:02 markm Exp $ 27 * $DragonFly: src/lib/libcrypt/crypt.c,v 1.3 2005/08/04 17:27:09 drhodus Exp $ 28 */ 29 30 #include <sys/types.h> 31 #include <string.h> 32 #include <libutil.h> 33 #include "crypt.h" 34 35 static const struct { 36 const char *const name; 37 char *(*const func)(const char *, const char *); 38 const char *const magic; 39 } crypt_types[] = { 40 #ifdef HAS_DES 41 { 42 "des", 43 crypt_des, 44 NULL 45 }, 46 #endif 47 { 48 "md5", 49 crypt_md5, 50 "$1$" 51 }, 52 #ifdef HAS_BLOWFISH 53 { 54 "blf", 55 crypt_blowfish, 56 "$2" 57 }, 58 #endif 59 { 60 NULL, 61 NULL 62 } 63 }; 64 65 static int crypt_type = -1; 66 67 static void 68 crypt_setdefault(void) 69 { 70 char *def; 71 int i; 72 73 if (crypt_type != -1) 74 return; 75 def = auth_getval("crypt_default"); 76 if (def == NULL) { 77 crypt_type = 0; 78 return; 79 } 80 for (i = 0; i < sizeof(crypt_types) / sizeof(crypt_types[0]) - 1; i++) { 81 if (strcmp(def, crypt_types[i].name) == 0) { 82 crypt_type = i; 83 return; 84 } 85 } 86 crypt_type = 0; 87 } 88 89 const char * 90 crypt_get_format(void) 91 { 92 93 crypt_setdefault(); 94 return (crypt_types[crypt_type].name); 95 } 96 97 int 98 crypt_set_format(char *type) 99 { 100 int i; 101 102 crypt_setdefault(); 103 for (i = 0; i < sizeof(crypt_types) / sizeof(crypt_types[0]) - 1; i++) { 104 if (strcmp(type, crypt_types[i].name) == 0) { 105 crypt_type = i; 106 return (1); 107 } 108 } 109 return (0); 110 } 111 112 char * 113 crypt(char *passwd, char *salt) 114 { 115 int i; 116 117 crypt_setdefault(); 118 for (i = 0; i < sizeof(crypt_types) / sizeof(crypt_types[0]) - 1; i++) { 119 if (crypt_types[i].magic != NULL && strncmp(salt, 120 crypt_types[i].magic, strlen(crypt_types[i].magic)) == 0) 121 return (crypt_types[i].func(passwd, salt)); 122 } 123 return (crypt_types[crypt_type].func(passwd, salt)); 124 } 125