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 "sha256", 61 crypt_sha256, 62 "$3$" 63 }, 64 { 65 "sha512", 66 crypt_sha512, 67 "$4$" 68 }, 69 { 70 NULL, 71 NULL 72 } 73 }; 74 75 static int crypt_type = -1; 76 77 static void 78 crypt_setdefault(void) 79 { 80 char *def; 81 int i; 82 83 if (crypt_type != -1) 84 return; 85 def = auth_getval("crypt_default"); 86 if (def == NULL) { 87 crypt_type = 0; 88 return; 89 } 90 for (i = 0; i < sizeof(crypt_types) / sizeof(crypt_types[0]) - 1; i++) { 91 if (strcmp(def, crypt_types[i].name) == 0) { 92 crypt_type = i; 93 return; 94 } 95 } 96 crypt_type = 0; 97 } 98 99 const char * 100 crypt_get_format(void) 101 { 102 103 crypt_setdefault(); 104 return (crypt_types[crypt_type].name); 105 } 106 107 int 108 crypt_set_format(char *type) 109 { 110 int i; 111 112 crypt_setdefault(); 113 for (i = 0; i < sizeof(crypt_types) / sizeof(crypt_types[0]) - 1; i++) { 114 if (strcmp(type, crypt_types[i].name) == 0) { 115 crypt_type = i; 116 return (1); 117 } 118 } 119 return (0); 120 } 121 122 char * 123 crypt(char *passwd, char *salt) 124 { 125 int i; 126 127 crypt_setdefault(); 128 for (i = 0; i < sizeof(crypt_types) / sizeof(crypt_types[0]) - 1; i++) { 129 if (crypt_types[i].magic != NULL && strncmp(salt, 130 crypt_types[i].magic, strlen(crypt_types[i].magic)) == 0) 131 return (crypt_types[i].func(passwd, salt)); 132 } 133 return (crypt_types[crypt_type].func(passwd, salt)); 134 } 135