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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1988 AT&T */ 28 /* All Rights Reserved */ 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 /* 33 * convert base 64 ascii to long int 34 * char set is [./0-9A-Za-z] 35 * 36 */ 37 #include "lint.h" 38 #include <sys/types.h> 39 #include <stdlib.h> 40 41 #define BITSPERCHAR 6 /* to hold entire character set */ 42 #define MAXBITS (6 * BITSPERCHAR) /* maximum number */ 43 /* of 6 chars converted */ 44 45 long 46 a64l(const char *s) 47 { 48 int i, c; 49 int lg = 0; 50 51 for (i = 0; ((c = *s++) != '\0') && (i < MAXBITS); i += BITSPERCHAR) { 52 if (c > 'Z') 53 c -= 'a' - 'Z' - 1; 54 if (c > '9') 55 c -= 'A' - '9' - 1; 56 lg |= (c - ('0' - 2)) << i; 57 } 58 return ((long)lg); 59 } 60