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 1.2 2003/06/17 04:26:49 dillon Exp $ 28 * 29 * $FreeBSD: src/lib/libcrypt/crypt.c,v 1.14.2.2 2001/05/24 12:20:02 markm Exp $ 30 */ 31 32 #include <sys/types.h> 33 #include <string.h> 34 #include <libutil.h> 35 #include "crypt.h" 36 37 static const struct { 38 const char *const name; 39 char *(*const func)(const char *, const char *); 40 const char *const magic; 41 } crypt_types[] = { 42 #ifdef HAS_DES 43 { 44 "des", 45 crypt_des, 46 NULL 47 }, 48 #endif 49 { 50 "md5", 51 crypt_md5, 52 "$1$" 53 }, 54 #ifdef HAS_BLOWFISH 55 { 56 "blf", 57 crypt_blowfish, 58 "$2" 59 }, 60 #endif 61 { 62 NULL, 63 NULL 64 } 65 }; 66 67 static int crypt_type = -1; 68 69 static void 70 crypt_setdefault(void) 71 { 72 char *def; 73 int i; 74 75 if (crypt_type != -1) 76 return; 77 def = auth_getval("crypt_default"); 78 if (def == NULL) { 79 crypt_type = 0; 80 return; 81 } 82 for (i = 0; i < sizeof(crypt_types) / sizeof(crypt_types[0]) - 1; i++) { 83 if (strcmp(def, crypt_types[i].name) == 0) { 84 crypt_type = i; 85 return; 86 } 87 } 88 crypt_type = 0; 89 } 90 91 const char * 92 crypt_get_format(void) 93 { 94 95 crypt_setdefault(); 96 return (crypt_types[crypt_type].name); 97 } 98 99 int 100 crypt_set_format(char *type) 101 { 102 int i; 103 104 crypt_setdefault(); 105 for (i = 0; i < sizeof(crypt_types) / sizeof(crypt_types[0]) - 1; i++) { 106 if (strcmp(type, crypt_types[i].name) == 0) { 107 crypt_type = i; 108 return (1); 109 } 110 } 111 return (0); 112 } 113 114 char * 115 crypt(char *passwd, char *salt) 116 { 117 int i; 118 119 crypt_setdefault(); 120 for (i = 0; i < sizeof(crypt_types) / sizeof(crypt_types[0]) - 1; i++) { 121 if (crypt_types[i].magic != NULL && strncmp(salt, 122 crypt_types[i].magic, strlen(crypt_types[i].magic)) == 0) 123 return (crypt_types[i].func(passwd, salt)); 124 } 125 return (crypt_types[crypt_type].func(passwd, salt)); 126 } 127