/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* encode/decode functions.
*
* These functions perform various encoding operations, and are provided in
* pairs, a function to query the length of and encode existing buffers, as
* well as companion functions to perform the same process to memory
* allocated from a pool.
*
* The API is designed to have the smallest possible RAM footprint, and so
* will only allocate the exact amount of RAM needed for each conversion.
*/
#include "apr_encode.h"
#include "apr_lib.h"
#include "apr_strings.h"
#include "apr_encode_private.h"
/* lookup table: fast and const should make it shared text page. */
static const unsigned char pr2six[256] =
{
#if !APR_CHARSET_EBCDIC
/* ASCII table */
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 62, 64, 62, 64, 63,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 64, 64, 64, 128, 64, 64,
64, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 64, 64, 64, 64, 63,
64, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64
#else /* APR_CHARSET_EBCDIC */
/* EBCDIC table */
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 62, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
62, 63, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 63, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 128, 64,
64, 26, 27, 28, 29, 30, 31, 32, 33, 34, 64, 64, 64, 64, 64, 64,
64, 35, 36, 37, 38, 39, 40, 41, 42, 43, 64, 64, 64, 64, 64, 64,
64, 64, 44, 45, 46, 47, 48, 49, 50, 51, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 0, 1, 2, 3, 4, 5, 6, 7, 8, 64, 64, 64, 64, 64, 64,
64, 9, 10, 11, 12, 13, 14, 15, 16, 17, 64, 64, 64, 64, 64, 64,
64, 64, 18, 19, 20, 21, 22, 23, 24, 25, 64, 64, 64, 64, 64, 64,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 64, 64, 64, 64, 64, 64
#endif /* APR_CHARSET_EBCDIC */
};
static const unsigned char pr2five[256] =
{
#if !APR_CHARSET_EBCDIC
/* ASCII table */
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 26, 27, 28, 29, 30, 31, 32, 32, 32, 32, 32, 128, 32, 32,
32, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32
#else /* APR_CHARSET_EBCDIC */
/* EBCDIC table */
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 128, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 0, 1, 2, 3, 4, 5, 6, 7, 8, 32, 32, 32, 32, 32, 32,
32, 9, 10, 11, 12, 13, 14, 15, 16, 17, 32, 32, 32, 32, 32, 32,
32, 32, 18, 19, 20, 21, 22, 23, 24, 25, 32, 32, 32, 32, 32, 32,
32, 32, 26, 27, 28, 29, 30, 31, 32, 32, 32, 32, 32, 32, 32, 32
#endif /* APR_CHARSET_EBCDIC */
};
static const unsigned char pr2fivehex[256] =
{
#if !APR_CHARSET_EBCDIC
/* ASCII table */
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 32, 32, 32, 128, 32, 32,
32, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
25, 26, 27, 28, 29, 30, 31, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32
#else /* APR_CHARSET_EBCDIC */
/* EBCDIC table */
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 128, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 10, 11, 12, 13, 14, 15, 16, 17, 18, 32, 32, 32, 32, 32, 32,
32, 19, 20, 21, 22, 23, 24, 25, 26, 27, 32, 32, 32, 32, 32, 32,
32, 32, 28, 29, 30, 31, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 32, 32, 32, 32, 32, 32
#endif /* APR_CHARSET_EBCDIC */
};
static const unsigned char pr2two[256] =
{
#if !APR_CHARSET_EBCDIC
/* ASCII table */
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 32, 16, 16, 16, 16, 16,
16, 10, 11, 12, 13, 14, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 10, 11, 12, 13, 14, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16
#else /* APR_CHARSET_EBCDIC */
/* EBCDIC table */
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 32, 16, 16, 16, 16, 16,
16, 10, 11, 12, 13, 14, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 10, 11, 12, 13, 14, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 16, 16, 16, 16, 16, 16
#endif /* APR_CHARSET_EBCDIC */
};
static const char base64[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
static const char base64url[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
static const char base32[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ234567";
static const char base32hex[] =
"0123456789ABCDEFGHIJKLMNOPQRSTUV";
static const char base16[] = "0123456789ABCDEF";
static const char base16lower[] = "0123456789abcdef";
APR_DECLARE(apr_status_t) apr_encode_base64(char *dest, const char *src,
apr_ssize_t slen, int flags, apr_size_t * len)
{
const char *base;
if (!src) {
return APR_NOTFOUND;
}
if (APR_ENCODE_STRING == slen) {
slen = strlen(src);
}
if (dest) {
register char *bufout = dest;
int i;
if (0 == ((flags & APR_ENCODE_BASE64URL))) {
base = base64;
}
else {
base = base64url;
}
for (i = 0; i < slen - 2; i += 3) {
*bufout++ = base[ENCODE_TO_ASCII(((src[i]) >> 2) & 0x3F)];
*bufout++ = base[ENCODE_TO_ASCII((((src[i]) & 0x3) << 4)
| ((int)((src[i + 1]) & 0xF0) >> 4))];
*bufout++ = base[ENCODE_TO_ASCII((((src[i + 1]) & 0xF) << 2)
| ((int)(ENCODE_TO_ASCII(src[i + 2]) & 0xC0) >> 6))];
*bufout++ = base[ENCODE_TO_ASCII((src[i + 2]) & 0x3F)];
}
if (i < slen) {
*bufout++ = base[ENCODE_TO_ASCII(((src[i]) >> 2) & 0x3F)];
if (i == (slen - 1)) {
*bufout++ = base[ENCODE_TO_ASCII((((src[i]) & 0x3) << 4))];
if (!(flags & APR_ENCODE_NOPADDING)) {
*bufout++ = '=';
}
}
else {
*bufout++ = base[ENCODE_TO_ASCII((((src[i]) & 0x3) << 4)
| ((int)((src[i + 1]) & 0xF0) >> 4))];
*bufout++ = base[ENCODE_TO_ASCII(((src[i + 1]) & 0xF) << 2)];
}
if (!(flags & APR_ENCODE_NOPADDING)) {
*bufout++ = '=';
}
}
if (len) {
*len = bufout - dest;
}
*bufout++ = '\0';
return APR_SUCCESS;
}
if (len) {
*len = ((slen + 2) / 3 * 4) + 1;
}
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_encode_base64_binary(char *dest, const unsigned char *src,
apr_ssize_t slen, int flags, apr_size_t * len)
{
const char *base;
if (!src) {
return APR_NOTFOUND;
}
if (dest) {
register char *bufout = dest;
int i;
if (0 == ((flags & APR_ENCODE_BASE64URL))) {
base = base64;
}
else {
base = base64url;
}
for (i = 0; i < slen - 2; i += 3) {
*bufout++ = base[(src[i] >> 2) & 0x3F];
*bufout++ = base[((src[i] & 0x3) << 4)
| ((int)(src[i + 1] & 0xF0) >> 4)];
*bufout++ = base[((src[i + 1] & 0xF) << 2)
| ((int)(src[i + 2] & 0xC0) >> 6)];
*bufout++ = base[src[i + 2] & 0x3F];
}
if (i < slen) {
*bufout++ = base[(src[i] >> 2) & 0x3F];
if (i == (slen - 1)) {
*bufout++ = base[((src[i] & 0x3) << 4)];
if (!(flags & APR_ENCODE_NOPADDING)) {
*bufout++ = '=';
}
}
else {
*bufout++ = base[((src[i] & 0x3) << 4)
| ((int)(src[i + 1] & 0xF0) >> 4)];
*bufout++ = base[((src[i + 1] & 0xF) << 2)];
}
if (!(flags & APR_ENCODE_NOPADDING)) {
*bufout++ = '=';
}
}
if (len) {
*len = bufout - dest;
}
*bufout++ = '\0';
return APR_SUCCESS;
}
if (len) {
*len = ((slen + 2) / 3 * 4) + 1;
}
return APR_SUCCESS;
}
APR_DECLARE(const char *)apr_pencode_base64(apr_pool_t * p, const char *src,
apr_ssize_t slen, int flags, apr_size_t * len)
{
apr_size_t size;
switch (apr_encode_base64(NULL, src, slen, flags, &size)) {
case APR_SUCCESS:{
char *cmd = apr_palloc(p, size);
apr_encode_base64(cmd, src, slen, flags, len);
return cmd;
}
case APR_NOTFOUND:{
break;
}
}
return NULL;
}
APR_DECLARE(const char *)apr_pencode_base64_binary(apr_pool_t * p, const unsigned char *src,
apr_ssize_t slen, int flags, apr_size_t * len)
{
apr_size_t size;
switch (apr_encode_base64_binary(NULL, src, slen, flags, &size)) {
case APR_SUCCESS:{
char *cmd = apr_palloc(p, size);
apr_encode_base64_binary(cmd, src, slen, flags, len);
return cmd;
}
case APR_NOTFOUND:{
break;
}
}
return NULL;
}
APR_DECLARE(apr_status_t) apr_decode_base64(char *dest, const char *src,
apr_ssize_t slen, int flags, apr_size_t * len)
{
if (!src) {
return APR_NOTFOUND;
}
if (APR_ENCODE_STRING == slen) {
slen = strlen(src);
}
if (dest) {
register const unsigned char *bufin;
register unsigned char *bufout;
register apr_size_t nprbytes;
register apr_size_t count = slen;
apr_status_t status;
bufin = (const unsigned char *)src;
while (pr2six[*(bufin++)] < 64 && count)
count--;
nprbytes = (bufin - (const unsigned char *)src) - 1;
while (pr2six[*(bufin++)] > 64 && count)
count--;
status = flags & APR_ENCODE_RELAXED ? APR_SUCCESS :
count ? APR_BADCH : APR_SUCCESS;
bufout = (unsigned char *)dest;
bufin = (const unsigned char *)src;
while (nprbytes > 4) {
*(bufout++) = (unsigned char)ENCODE_TO_NATIVE(pr2six[bufin[0]] << 2
| pr2six[bufin[1]] >> 4);
*(bufout++) = (unsigned char)ENCODE_TO_NATIVE(
pr2six[bufin[1]] << 4 | pr2six[bufin[2]] >> 2);
*(bufout++) = (unsigned char)ENCODE_TO_NATIVE(
pr2six[bufin[2]] << 6 | pr2six[bufin[3]]);
bufin += 4;
nprbytes -= 4;
}
if (nprbytes == 1) {
status = APR_BADCH;
}
if (nprbytes > 1) {
*(bufout++) = (unsigned char)ENCODE_TO_NATIVE(
pr2six[*bufin] << 2 | pr2six[bufin[1]] >> 4);
}
if (nprbytes > 2) {
*(bufout++) = (unsigned char)ENCODE_TO_NATIVE(
pr2six[bufin[1]] << 4 | pr2six[bufin[2]] >> 2);
}
if (nprbytes > 3) {
*(bufout++) = (unsigned char)ENCODE_TO_NATIVE(
pr2six[bufin[2]] << 6 | pr2six[bufin[3]]);
}
if (len) {
*len = bufout - (unsigned char *)dest;
}
*(bufout++) = 0;
return status;
}
if (len) {
*len = (((int)slen + 3) / 4) * 3 + 1;
}
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_decode_base64_binary(unsigned char *dest,
const char *src, apr_ssize_t slen, int flags, apr_size_t * len)
{
if (!src) {
return APR_NOTFOUND;
}
if (APR_ENCODE_STRING == slen) {
slen = strlen(src);
}
if (dest) {
register const unsigned char *bufin;
register unsigned char *bufout;
register apr_size_t nprbytes;
register apr_size_t count = slen;
apr_status_t status;
bufin = (const unsigned char *)src;
while (pr2six[*(bufin++)] < 64 && count)
count--;
nprbytes = (bufin - (const unsigned char *)src) - 1;
while (pr2six[*(bufin++)] > 64 && count)
count--;
status = flags & APR_ENCODE_RELAXED ? APR_SUCCESS :
count ? APR_BADCH : APR_SUCCESS;
bufout = (unsigned char *)dest;
bufin = (const unsigned char *)src;
while (nprbytes > 4) {
*(bufout++) = (unsigned char)(pr2six[bufin[0]] << 2
| pr2six[bufin[1]] >> 4);
*(bufout++) = (unsigned char)(pr2six[bufin[1]] << 4
| pr2six[bufin[2]] >> 2);
*(bufout++) = (unsigned char)(pr2six[bufin[2]] << 6
| pr2six[bufin[3]]);
bufin += 4;
nprbytes -= 4;
}
if (nprbytes == 1) {
status = APR_BADCH;
}
if (nprbytes > 1) {
*(bufout++) = (unsigned char)(pr2six[bufin[0]] << 2
| pr2six[bufin[1]] >> 4);
}
if (nprbytes > 2) {
*(bufout++) = (unsigned char)(pr2six[bufin[1]] << 4
| pr2six[bufin[2]] >> 2);
}
if (nprbytes > 3) {
*(bufout++) = (unsigned char)(pr2six[bufin[2]] << 6
| pr2six[bufin[3]]);
}
if (len) {
*len = bufout - dest;
}
return status;
}
if (len) {
*len = (((int)slen + 3) / 4) * 3;
}
return APR_SUCCESS;
}
APR_DECLARE(const char *)apr_pdecode_base64(apr_pool_t * p, const char *str,
apr_ssize_t slen, int flags, apr_size_t * len)
{
apr_size_t size;
switch (apr_decode_base64(NULL, str, slen, flags, &size)) {
case APR_SUCCESS:{
void *cmd = apr_palloc(p, size);
apr_decode_base64(cmd, str, slen, flags, len);
return cmd;
}
case APR_BADCH:
case APR_NOTFOUND:{
break;
}
}
return NULL;
}
APR_DECLARE(const unsigned char *)apr_pdecode_base64_binary(apr_pool_t * p,
const char *str, apr_ssize_t slen, int flags, apr_size_t * len)
{
apr_size_t size;
switch (apr_decode_base64_binary(NULL, str, slen, flags, &size)) {
case APR_SUCCESS:{
unsigned char *cmd = apr_palloc(p, size + 1);
cmd[size] = 0;
apr_decode_base64_binary(cmd, str, slen, flags, len);
return cmd;
}
case APR_BADCH:
case APR_NOTFOUND:{
break;
}
}
return NULL;
}
APR_DECLARE(apr_status_t) apr_encode_base32(char *dest, const char *src,
apr_ssize_t slen, int flags, apr_size_t * len)
{
const char *base;
if (!src) {
return APR_NOTFOUND;
}
if (APR_ENCODE_STRING == slen) {
slen = strlen(src);
}
if (dest) {
register char *bufout = dest;
int i;
if (!((flags & APR_ENCODE_BASE32HEX))) {
base = base32;
}
else {
base = base32hex;
}
for (i = 0; i < slen - 4; i += 5) {
*bufout++ = base[ENCODE_TO_ASCII((src[i] >> 3) & 0x1F)];
*bufout++ = base[ENCODE_TO_ASCII(((src[i] << 2) & 0x1C)
| ((src[i + 1] >> 6) & 0x3))];
*bufout++ = base[ENCODE_TO_ASCII((src[i + 1] >> 1) & 0x1F)];
*bufout++ = base[ENCODE_TO_ASCII(((src[i + 1] << 4) & 0x10)
| ((src[i + 2] >> 4) & 0xF))];
*bufout++ = base[ENCODE_TO_ASCII(((src[i + 2] << 1) & 0x1E)
| ((src[i + 3] >> 7) & 0x1))];
*bufout++ = base[ENCODE_TO_ASCII((src[i + 3] >> 2) & 0x1F)];
*bufout++ = base[ENCODE_TO_ASCII(((src[i + 3] << 3) & 0x18)
| ((src[i + 4] >> 5) & 0x7))];
*bufout++ = base[ENCODE_TO_ASCII(src[i + 4] & 0x1F)];
}
if (i < slen) {
*bufout++ = base[ENCODE_TO_ASCII(src[i] >> 3) & 0x1F];
if (i == (slen - 1)) {
*bufout++ = base[ENCODE_TO_ASCII((src[i] << 2) & 0x1C)];
if (!(flags & APR_ENCODE_NOPADDING)) {
*bufout++ = '=';
*bufout++ = '=';
*bufout++ = '=';
*bufout++ = '=';
*bufout++ = '=';
*bufout++ = '=';
}
}
else if (i == (slen - 2)) {
*bufout++ = base[ENCODE_TO_ASCII(((src[i] << 2) & 0x1C)
| ((src[i + 1] >> 6) & 0x3))];
*bufout++ = base[ENCODE_TO_ASCII((src[i + 1] >> 1) & 0x1F)];
*bufout++ = base[ENCODE_TO_ASCII((src[i + 1] << 4) & 0x10)];
if (!(flags & APR_ENCODE_NOPADDING)) {
*bufout++ = '=';
*bufout++ = '=';
*bufout++ = '=';
*bufout++ = '=';
}
}
else if (i == (slen - 3)) {
*bufout++ = base[ENCODE_TO_ASCII(((src[i] << 2) & 0x1C)
| ((src[i + 1] >> 6) & 0x3))];
*bufout++ = base[ENCODE_TO_ASCII((src[i + 1] >> 1) & 0x1F)];
*bufout++ = base[ENCODE_TO_ASCII(((src[i + 1] << 4) & 0x10)
| ((src[i + 2] >> 4) & 0xF))];
*bufout++ = base[ENCODE_TO_ASCII((src[i + 2] << 1) & 0x1E)];
if (!(flags & APR_ENCODE_NOPADDING)) {
*bufout++ = '=';
*bufout++ = '=';
*bufout++ = '=';
}
}
else {
*bufout++ = base[ENCODE_TO_ASCII(((src[i] << 2) & 0x1C)
| ((src[i + 1] >> 6) & 0x3))];
*bufout++ = base[ENCODE_TO_ASCII((src[i + 1] >> 1) & 0x1F)];
*bufout++ = base[ENCODE_TO_ASCII(((src[i + 1] << 4) & 0x10)
| ((src[i + 2] >> 4) & 0xF))];
*bufout++ = base[ENCODE_TO_ASCII(((src[i + 2] << 1) & 0x1E)
| ((src[i + 3] >> 7) & 0x1))];
*bufout++ = base[ENCODE_TO_ASCII((src[i + 3] >> 2) & 0x1F)];
*bufout++ = base[ENCODE_TO_ASCII((src[i + 3] << 3) & 0x18)];
if (!(flags & APR_ENCODE_NOPADDING)) {
*bufout++ = '=';
}
}
}
if (len) {
*len = bufout - dest;
}
*bufout++ = '\0';
return APR_SUCCESS;
}
if (len) {
*len = ((slen + 2) / 3 * 4) + 1;
}
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_encode_base32_binary(char *dest, const unsigned char *src,
apr_ssize_t slen, int flags, apr_size_t * len)
{
const char *base;
if (!src) {
return APR_NOTFOUND;
}
if (dest) {
register char *bufout = dest;
int i;
if (!((flags & APR_ENCODE_BASE32HEX))) {
base = base32;
}
else {
base = base32hex;
}
for (i = 0; i < slen - 4; i += 5) {
*bufout++ = base[((src[i] >> 3) & 0x1F)];
*bufout++ = base[(((src[i] << 2) & 0x1C)
| ((src[i + 1] >> 6) & 0x3))];
*bufout++ = base[((src[i + 1] >> 1) & 0x1F)];
*bufout++ = base[(((src[i + 1] << 4) & 0x10)
| ((src[i + 2] >> 4) & 0xF))];
*bufout++ = base[(((src[i + 2] << 1) & 0x1E)
| ((src[i + 3] >> 7) & 0x1))];
*bufout++ = base[((src[i + 3] >> 2) & 0x1F)];
*bufout++ = base[(((src[i + 3] << 3) & 0x18)
| ((src[i + 4] >> 5) & 0x7))];
*bufout++ = base[(src[i + 4] & 0x1F)];
}
if (i < slen) {
*bufout++ = base[(src[i] >> 3) & 0x1F];
if (i == (slen - 1)) {
*bufout++ = base[((src[i] << 2) & 0x1C)];
if (!(flags & APR_ENCODE_NOPADDING)) {
*bufout++ = '=';
*bufout++ = '=';
*bufout++ = '=';
*bufout++ = '=';
*bufout++ = '=';
*bufout++ = '=';
}
}
else if (i == (slen - 2)) {
*bufout++ = base[(((src[i] << 2) & 0x1C)
| ((src[i + 1] >> 6) & 0x3))];
*bufout++ = base[((src[i + 1] >> 1) & 0x1F)];
*bufout++ = base[((src[i + 1] << 4) & 0x10)];
if (!(flags & APR_ENCODE_NOPADDING)) {
*bufout++ = '=';
*bufout++ = '=';
*bufout++ = '=';
*bufout++ = '=';
}
}
else if (i == (slen - 3)) {
*bufout++ = base[(((src[i] << 2) & 0x1C)
| ((src[i + 1] >> 6) & 0x3))];
*bufout++ = base[((src[i + 1] >> 1) & 0x1F)];
*bufout++ = base[(((src[i + 1] << 4) & 0x10)
| ((int)(src[i + 2] >> 4) & 0xF))];
*bufout++ = base[((src[i + 2] << 1) & 0x1E)];
if (!(flags & APR_ENCODE_NOPADDING)) {
*bufout++ = '=';
*bufout++ = '=';
*bufout++ = '=';
}
}
else {
*bufout++ = base[(((src[i] << 2) & 0x1C)
| ((src[i + 1] >> 6) & 0x3))];
*bufout++ = base[((src[i + 1] >> 1) & 0x1F)];
*bufout++ = base[(((src[i + 1] << 4) & 0x10)
| ((src[i + 2] >> 4) & 0xF))];
*bufout++ = base[(((src[i + 2] << 1) & 0x1E)
| ((src[i + 3] >> 7) & 0x1))];
*bufout++ = base[((src[i + 3] >> 2) & 0x1F)];
*bufout++ = base[((src[i + 3] << 3) & 0x18)];
if (!(flags & APR_ENCODE_NOPADDING)) {
*bufout++ = '=';
}
}
}
if (len) {
*len = bufout - dest;
}
*bufout++ = '\0';
return APR_SUCCESS;
}
if (len) {
*len = ((slen + 4) / 5 * 8) + 1;
}
return APR_SUCCESS;
}
APR_DECLARE(const char *)apr_pencode_base32(apr_pool_t * p, const char *src,
apr_ssize_t slen, int flags, apr_size_t * len)
{
apr_size_t size;
switch (apr_encode_base32(NULL, src, slen, flags, &size)) {
case APR_SUCCESS:{
char *cmd = apr_palloc(p, size);
apr_encode_base32(cmd, src, slen, flags, len);
return cmd;
}
case APR_NOTFOUND:{
break;
}
}
return NULL;
}
APR_DECLARE(const char *)apr_pencode_base32_binary(apr_pool_t * p, const unsigned char *src,
apr_ssize_t slen, int flags, apr_size_t * len)
{
apr_size_t size;
switch (apr_encode_base32_binary(NULL, src, slen, flags, &size)) {
case APR_SUCCESS:{
char *cmd = apr_palloc(p, size);
apr_encode_base32_binary(cmd, src, slen, flags, len);
return cmd;
}
case APR_NOTFOUND:{
break;
}
}
return NULL;
}
APR_DECLARE(apr_status_t) apr_decode_base32(char *dest, const char *src,
apr_ssize_t slen, int flags, apr_size_t * len)
{
if (!src) {
return APR_NOTFOUND;
}
if (APR_ENCODE_STRING == slen) {
slen = strlen(src);
}
if (dest) {
register const unsigned char *bufin;
register unsigned char *bufout;
register apr_size_t nprbytes;
register apr_size_t count = slen;
const unsigned char *pr2;
apr_status_t status;
if ((flags & APR_ENCODE_BASE32HEX)) {
pr2 = pr2fivehex;
}
else {
pr2 = pr2five;
}
bufin = (const unsigned char *)src;
while (pr2[*(bufin++)] < 32 && count)
count--;
nprbytes = (bufin - (const unsigned char *)src) - 1;
while (pr2[*(bufin++)] > 32 && count)
count--;
status = flags & APR_ENCODE_RELAXED ? APR_SUCCESS :
count ? APR_BADCH : APR_SUCCESS;
bufout = (unsigned char *)dest;
bufin = (const unsigned char *)src;
while (nprbytes > 8) {
*(bufout++) = (unsigned char)ENCODE_TO_NATIVE(pr2[bufin[0]] << 3
| pr2[bufin[1]] >> 2);
*(bufout++) = (unsigned char)ENCODE_TO_NATIVE(pr2[bufin[1]] << 6
| pr2[bufin[2]] << 1 | pr2[bufin[3]] >> 4);
*(bufout++) = (unsigned char)ENCODE_TO_NATIVE(pr2[bufin[3]] << 4
| pr2[bufin[4]] >> 1);
*(bufout++) = (unsigned char)ENCODE_TO_NATIVE(pr2[bufin[4]] << 7
| pr2[bufin[5]] << 2 | pr2[bufin[6]] >> 3);
*(bufout++) = (unsigned char)ENCODE_TO_NATIVE(pr2[bufin[6]] << 5
| pr2[bufin[7]]);
bufin += 8;
nprbytes -= 8;
}
if (nprbytes == 1) {
status = APR_BADCH;
}
if (nprbytes >= 2) {
*(bufout++) = (unsigned char)ENCODE_TO_NATIVE(
pr2[bufin[0]] << 3 | pr2[bufin[1]] >> 2);
}
if (nprbytes == 3) {
status = APR_BADCH;
}
if (nprbytes >= 4) {
*(bufout++) = (unsigned char)ENCODE_TO_NATIVE(
pr2[bufin[1]] << 6 | pr2[bufin[2]] << 1
| pr2[bufin[3]] >> 4);
}
if (nprbytes >= 5) {
*(bufout++) = (unsigned char)ENCODE_TO_NATIVE(pr2[bufin[3]] << 4
| pr2[bufin[4]] >> 1);
}
if (nprbytes == 6) {
status = APR_BADCH;
}
if (nprbytes >= 7) {
*(bufout++) = (unsigned char)ENCODE_TO_NATIVE(pr2[bufin[4]] << 7
| pr2[bufin[5]] << 2 | pr2[bufin[6]] >> 3);
}
if (nprbytes == 8) {
*(bufout++) = (unsigned char)ENCODE_TO_NATIVE(pr2[bufin[6]] << 5
| pr2[bufin[7]]);
}
if (len) {
*len = bufout - (unsigned char *)dest;
}
*(bufout++) = 0;
return status;
}
if (len) {
*len = (((int)slen + 7) / 8) * 5 + 1;
}
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_decode_base32_binary(unsigned char *dest,
const char *src, apr_ssize_t slen, int flags, apr_size_t * len)
{
if (!src) {
return APR_NOTFOUND;
}
if (APR_ENCODE_STRING == slen) {
slen = strlen(src);
}
if (dest) {
register const unsigned char *bufin;
register unsigned char *bufout;
register apr_size_t nprbytes;
register apr_size_t count = slen;
const unsigned char *pr2;
apr_status_t status;
if ((flags & APR_ENCODE_BASE32HEX)) {
pr2 = pr2fivehex;
}
else {
pr2 = pr2five;
}
bufin = (const unsigned char *)src;
while (pr2[*(bufin++)] < 32 && count)
count--;
nprbytes = (bufin - (const unsigned char *)src) - 1;
while (pr2[*(bufin++)] > 32 && count)
count--;
status = flags & APR_ENCODE_RELAXED ? APR_SUCCESS :
count ? APR_BADCH : APR_SUCCESS;
bufout = (unsigned char *)dest;
bufin = (const unsigned char *)src;
while (nprbytes > 8) {
*(bufout++) = (unsigned char)(pr2[bufin[0]] << 3
| pr2[bufin[1]] >> 2);
*(bufout++) = (unsigned char)(pr2[bufin[1]] << 6
| pr2[bufin[2]] << 1 | pr2[bufin[3]] >> 4);
*(bufout++) = (unsigned char)(pr2[bufin[3]] << 4
| pr2[bufin[4]] >> 1);
*(bufout++) = (unsigned char)(pr2[bufin[4]] << 7
| pr2[bufin[5]] << 2 | pr2[bufin[6]] >> 3);
*(bufout++) = (unsigned char)(pr2[bufin[6]] << 5
| pr2[bufin[7]]);
bufin += 8;
nprbytes -= 8;
}
if (nprbytes == 1) {
status = APR_BADCH;
}
if (nprbytes >= 2) {
*(bufout++) = (unsigned char)(
pr2[bufin[0]] << 3 | pr2[bufin[1]] >> 2);
}
if (nprbytes == 3) {
status = APR_BADCH;
}
if (nprbytes >= 4) {
*(bufout++) = (unsigned char)(
pr2[bufin[1]] << 6 | pr2[bufin[2]] << 1
| pr2[bufin[3]] >> 4);
}
if (nprbytes >= 5) {
*(bufout++) = (unsigned char)(pr2[bufin[3]] << 4
| pr2[bufin[4]] >> 1);
}
if (nprbytes == 6) {
status = APR_BADCH;
}
if (nprbytes >= 7) {
*(bufout++) = (unsigned char)(pr2[bufin[4]] << 7
| pr2[bufin[5]] << 2 | pr2[bufin[6]] >> 3);
}
if (nprbytes == 8) {
*(bufout++) = (unsigned char)(pr2[bufin[6]] << 5
| pr2[bufin[7]]);
}
if (len) {
*len = bufout - dest;
}
return status;
}
if (len) {
*len = (((int)slen + 7) / 8) * 5;
}
return APR_SUCCESS;
}
APR_DECLARE(const char *)apr_pdecode_base32(apr_pool_t * p, const char *str,
apr_ssize_t slen, int flags, apr_size_t * len)
{
apr_size_t size;
switch (apr_decode_base32(NULL, str, slen, flags, &size)) {
case APR_SUCCESS:{
void *cmd = apr_palloc(p, size);
apr_decode_base32(cmd, str, slen, flags, len);
return cmd;
}
case APR_BADCH:
case APR_NOTFOUND:{
break;
}
}
return NULL;
}
APR_DECLARE(const unsigned char *)apr_pdecode_base32_binary(apr_pool_t * p,
const char *str, apr_ssize_t slen, int flags, apr_size_t * len)
{
apr_size_t size;
switch (apr_decode_base32_binary(NULL, str, slen, flags, &size)) {
case APR_SUCCESS:{
unsigned char *cmd = apr_palloc(p, size + 1);
cmd[size] = 0;
apr_decode_base32_binary(cmd, str, slen, flags, len);
return cmd;
}
case APR_BADCH:
case APR_NOTFOUND:{
break;
}
}
return NULL;
}
APR_DECLARE(apr_status_t) apr_encode_base16(char *dest,
const char *src, apr_ssize_t slen, int flags, apr_size_t * len)
{
const char *in = src;
apr_size_t size;
if (!src) {
return APR_NOTFOUND;
}
if (dest) {
register char *bufout = dest;
const char *base;
if ((flags & APR_ENCODE_LOWER)) {
base = base16lower;
}
else {
base = base16;
}
for (size = 0; (APR_ENCODE_STRING == slen) ? in[size] : size < slen; size++) {
if ((flags & APR_ENCODE_COLON) && size) {
*(bufout++) = ':';
}
*(bufout++) = base[(const unsigned char)(ENCODE_TO_ASCII(in[size])) >> 4];
*(bufout++) = base[(const unsigned char)(ENCODE_TO_ASCII(in[size])) & 0xf];
}
if (len) {
*len = bufout - dest;
}
*bufout = '\0';
return APR_SUCCESS;
}
if (len) {
if (APR_ENCODE_STRING == slen) {
slen = strlen(src);
}
if ((flags & APR_ENCODE_COLON) && slen) {
*len = slen * 3;
}
else {
*len = slen * 2 + 1;
}
}
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_encode_base16_binary(char *dest,
const unsigned char *src, apr_ssize_t slen, int flags, apr_size_t * len)
{
const unsigned char *in = src;
apr_size_t size;
if (!src) {
return APR_NOTFOUND;
}
if (dest) {
register char *bufout = dest;
const char *base;
if ((flags & APR_ENCODE_LOWER)) {
base = base16lower;
}
else {
base = base16;
}
for (size = 0; size < slen; size++) {
if ((flags & APR_ENCODE_COLON) && size) {
*(bufout++) = ':';
}
*(bufout++) = base[in[size] >> 4];
*(bufout++) = base[in[size] & 0xf];
}
if (len) {
*len = bufout - dest;
}
*bufout = 0;
return APR_SUCCESS;
}
if (len) {
if ((flags & APR_ENCODE_COLON) && slen) {
*len = slen * 3;
}
else {
*len = slen * 2 + 1;
}
}
return APR_SUCCESS;
}
APR_DECLARE(const char *)apr_pencode_base16(apr_pool_t * p,
const char *src, apr_ssize_t slen, int flags, apr_size_t * len)
{
apr_size_t size;
switch (apr_encode_base16(NULL, src, slen, flags, &size)) {
case APR_SUCCESS:{
char *cmd = apr_palloc(p, size);
apr_encode_base16(cmd, src, slen, flags, len);
return cmd;
}
case APR_NOTFOUND:{
break;
}
}
return NULL;
}
APR_DECLARE(const char *)apr_pencode_base16_binary(apr_pool_t * p,
const unsigned char *src, apr_ssize_t slen, int flags,
apr_size_t * len)
{
apr_size_t size;
switch (apr_encode_base16_binary(NULL, src, slen, flags, &size)) {
case APR_SUCCESS:{
char *cmd = apr_palloc(p, size);
apr_encode_base16_binary(cmd, src, slen, flags, len);
return cmd;
}
case APR_NOTFOUND:{
break;
}
}
return NULL;
}
APR_DECLARE(apr_status_t) apr_decode_base16(char *dest,
const char *src, apr_ssize_t slen, int flags, apr_size_t * len)
{
register const unsigned char *bufin;
register unsigned char *bufout;
register apr_size_t nprbytes;
register apr_size_t count;
apr_status_t status;
if (!src) {
return APR_NOTFOUND;
}
if (APR_ENCODE_STRING == slen) {
slen = strlen(src);
}
count = slen;
bufin = (const unsigned char *)src;
while (pr2two[*(bufin++)] != 16 && count)
count--;
nprbytes = (bufin - (const unsigned char *)src) - 1;
while (pr2two[*(bufin++)] > 16 && count)
count--;
status = flags & APR_ENCODE_RELAXED ? APR_SUCCESS :
count ? APR_BADCH : APR_SUCCESS;
if (dest) {
bufout = (unsigned char *)dest;
bufin = (const unsigned char *)src;
while (nprbytes >= 2) {
if (pr2two[bufin[0]] > 16) {
bufin += 1;
nprbytes -= 1;
}
else {
*(bufout++) = (unsigned char)ENCODE_TO_NATIVE(
pr2two[bufin[0]] << 4 | pr2two[bufin[1]]);
bufin += 2;
nprbytes -= 2;
}
}
if (nprbytes == 1) {
status = APR_BADCH;
}
if (len) {
*len = bufout - (unsigned char *)dest;
}
*(bufout++) = 0;
return status;
}
else {
count = 0;
bufin = (const unsigned char *)src;
while (nprbytes >= 2) {
if (pr2two[bufin[0]] > 16) {
bufin += 1;
nprbytes -= 1;
}
else {
count++;
bufin += 2;
nprbytes -= 2;
}
}
if (nprbytes == 1) {
status = APR_BADCH;
}
if (len) {
*len = count + 1;
}
return status;
}
}
APR_DECLARE(apr_status_t) apr_decode_base16_binary(unsigned char *dest,
const char *src, apr_ssize_t slen, int flags, apr_size_t * len)
{
register const unsigned char *bufin;
register unsigned char *bufout;
register apr_size_t nprbytes;
register apr_size_t count;
apr_status_t status;
if (!src) {
return APR_NOTFOUND;
}
if (APR_ENCODE_STRING == slen) {
slen = strlen(src);
}
count = slen;
bufin = (const unsigned char *)src;
while (pr2two[*(bufin++)] != 16 && count)
count--;
nprbytes = (bufin - (const unsigned char *)src) - 1;
while (pr2two[*(bufin++)] > 16 && count)
count--;
status = flags & APR_ENCODE_RELAXED ? APR_SUCCESS :
count ? APR_BADCH : APR_SUCCESS;
if (dest) {
bufout = (unsigned char *)dest;
bufin = (const unsigned char *)src;
while (nprbytes >= 2) {
if (pr2two[bufin[0]] > 16) {
bufin += 1;
nprbytes -= 1;
}
else {
*(bufout++) = (unsigned char)(
pr2two[bufin[0]] << 4 | pr2two[bufin[1]]);
bufin += 2;
nprbytes -= 2;
}
}
if (nprbytes == 1) {
status = APR_BADCH;
}
if (len) {
*len = bufout - (unsigned char *)dest;
}
return status;
}
else {
count = 0;
bufin = (const unsigned char *)src;
while (nprbytes >= 2) {
if (pr2two[bufin[0]] > 16) {
bufin += 1;
nprbytes -= 1;
}
else {
count++;
bufin += 2;
nprbytes -= 2;
}
}
if (nprbytes == 1) {
status = APR_BADCH;
}
if (len) {
*len = count;
}
return status;
}
}
APR_DECLARE(const char *)apr_pdecode_base16(apr_pool_t * p,
const char *str, apr_ssize_t slen, int flags, apr_size_t * len)
{
apr_size_t size;
switch (apr_decode_base16(NULL, str, slen, flags, &size)) {
case APR_SUCCESS:{
void *cmd = apr_palloc(p, size);
apr_decode_base16(cmd, str, slen, flags, len);
return cmd;
}
case APR_BADCH:
case APR_NOTFOUND:{
break;
}
}
return NULL;
}
APR_DECLARE(const unsigned char *)apr_pdecode_base16_binary(apr_pool_t * p,
const char *str, apr_ssize_t slen, int flags, apr_size_t * len)
{
apr_size_t size;
switch (apr_decode_base16_binary(NULL, str, slen, flags, &size)) {
case APR_SUCCESS:{
unsigned char *cmd = apr_palloc(p, size + 1);
cmd[size] = 0;
apr_decode_base16_binary(cmd, str, slen, flags, len);
return cmd;
}
case APR_BADCH:
case APR_NOTFOUND:{
break;
}
}
return NULL;
}