1/* $KAME: str2val.c,v 1.11 2001/08/16 14:37:29 itojun Exp $ */ 2 3/* 4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#include "config.h" 33 34#include <sys/types.h> 35#include <sys/param.h> 36#include <ctype.h> 37 38#include <stdlib.h> 39#include <stdio.h> 40 41#include "str2val.h" 42#include "gcmalloc.h" 43 44/* 45 * exchange a value to a hex string. 46 * must free buffer allocated later. 47 */ 48caddr_t 49val2str(buf, mlen) 50 const char *buf; 51 size_t mlen; 52{ 53 caddr_t new; 54 size_t len = (mlen * 2) + mlen / 8 + 10; 55 size_t i, j; 56 57 if ((new = racoon_malloc(len)) == 0) return(0); 58 59 for (i = 0, j = 0; i < mlen; i++) { 60 snprintf(&new[j], len - j, "%02x", (u_char)buf[i]); 61 j += 2; 62 if (i % 8 == 7) { 63 new[j++] = ' '; 64 new[j] = '\0'; 65 } 66 } 67 new[j] = '\0'; 68 69 return(new); 70} 71 72/* 73 * exchange a string based "base" to a value. 74 */ 75char * 76str2val(str, base, len) 77 const char *str; 78 int base; 79 size_t *len; 80{ 81 int f; 82 size_t i; 83 char *dst; 84 char *rp; 85 const char *p; 86 char b[3]; 87 88 i = 0; 89 for (p = str; *p != '\0'; p++) { 90 if (isxdigit((int)*p)) 91 i++; 92 else if (isspace((int)*p)) 93 ; 94 else 95 return NULL; 96 } 97 if (i == 0 || (i % 2) != 0) 98 return NULL; 99 i /= 2; 100 101 if ((dst = racoon_malloc(i)) == NULL) 102 return NULL; 103 104 i = 0; 105 f = 0; 106 for (rp = dst, p = str; *p != '\0'; p++) { 107 if (isxdigit((int)*p)) { 108 if (!f) { 109 b[0] = *p; 110 f = 1; 111 } else { 112 b[1] = *p; 113 b[2] = '\0'; 114 *rp++ = (char)strtol(b, NULL, base); 115 i++; 116 f = 0; 117 } 118 } 119 } 120 121 *len = i; 122 123 return(dst); 124} 125