1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 1996-2002 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* LINTLIBRARY */ 28 29 #if !defined(_BOOT) && !defined(_KERNEL) 30 #include <stdio.h> 31 #include <ctype.h> 32 #include <stdlib.h> 33 #endif /* _BOOT && _KERNEL */ 34 #include <sys/types.h> 35 #include <sys/null.h> 36 #include <sys/errno.h> 37 38 #if defined(_BOOT) || defined(_KERNEL) 39 #define isdigit(c) ((c) >= '0' && c <= '9') 40 #define isxdigit(c) (isdigit(c) || (((c) >= 'a') && ((c) <= 'f')) || \ 41 (((c) >= 'A') && ((c) <= 'F'))) 42 #endif /* _BOOT || _KERNEL */ 43 44 /* 45 * Converts an octet string into an ASCII string. The string returned is 46 * NULL-terminated, and the length recorded in blen does *not* include the 47 * null terminator (in other words, octet_to_hexascii() returns the length a'la 48 * strlen()). 49 * 50 * Returns 0 for Success, errno otherwise. 51 */ 52 int 53 octet_to_hexascii(const void *nump, uint_t nlen, char *bufp, uint_t *blen) 54 { 55 int i; 56 char *bp; 57 const uchar_t *np; 58 static char ascii_conv[] = "0123456789ABCDEF"; 59 60 if (nump == NULL || bufp == NULL || blen == NULL) 61 return (EINVAL); 62 63 if ((nlen * 2) >= *blen) { 64 *blen = 0; 65 return (E2BIG); 66 } 67 for (i = 0, bp = bufp, np = (const uchar_t *)nump; i < nlen; i++) { 68 *bp++ = ascii_conv[(np[i] >> 4) & 0x0f]; 69 *bp++ = ascii_conv[np[i] & 0x0f]; 70 } 71 *bp = '\0'; 72 *blen = i * 2; 73 return (0); 74 } 75 76 /* 77 * Converts an ASCII string into an octet string. 78 * 79 * Returns 0 for success, errno otherwise. 80 */ 81 int 82 hexascii_to_octet(const char *asp, uint_t alen, void *bufp, uint_t *blen) 83 { 84 int i, j, k; 85 const char *tp; 86 uchar_t *u_tp; 87 88 if (asp == NULL || bufp == NULL || blen == NULL) 89 return (EINVAL); 90 91 if (alen > (*blen * 2)) 92 return (E2BIG); 93 94 k = ((alen % 2) == 0) ? alen / 2 : (alen / 2) + 1; 95 for (tp = asp, u_tp = (uchar_t *)bufp, i = 0; i < k; i++, u_tp++) { 96 /* one nibble at a time */ 97 for (*u_tp = 0, j = 0; j < 2; j++, tp++) { 98 if (isdigit(*tp)) 99 *u_tp |= *tp - '0'; 100 else if (isxdigit(*tp)) 101 *u_tp |= (*tp & ~0x20) + 10 - 'A'; 102 else 103 return (EINVAL); 104 if ((j % 2) == 0) 105 *u_tp <<= 4; 106 } 107 } 108 *blen = k; 109 return (0); 110 } 111