Apache 1.3.9 baseline for the Apache 2.0 repository.

Obtained from: Apache 1.3.9 (minus unused files), tag APACHE_1_3_9
Submitted by: Apache Group


git-svn-id: http://svn.apache.org/repos/asf/apr/apr-util/trunk@57778 13f79535-47bb-0310-9956-ffa450edef68

2 files changed, 544 insertions, 0 deletions

diff --git a/encoding/ap_base64.c b/encoding/ap_base64.c
new file mode 100644
index 00000000..89cda4b5
--- /dev/null
+++ b/encoding/ap_base64.c
@@ -0,0 +1,272 @@
+/* ====================================================================
+ * Copyright (c) 1995-1999 The Apache Group.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the Apache Group
+ *    for use in the Apache HTTP server project (http://www.apache.org/)."
+ *
+ * 4. The names "Apache Server" and "Apache Group" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    apache@apache.org.
+ *
+ * 5. Products derived from this software may not be called "Apache"
+ *    nor may "Apache" appear in their names without prior written
+ *    permission of the Apache Group.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the Apache Group
+ *    for use in the Apache HTTP server project (http://www.apache.org/)."
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE APACHE GROUP OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Group and was originally based
+ * on public domain software written at the National Center for
+ * Supercomputing Applications, University of Illinois, Urbana-Champaign.
+ * For more information on the Apache Group and the Apache HTTP server
+ * project, please see <http://www.apache.org/>.
+ *
+ */
+
+/* base64 encoder/decoder. Originally part of main/util.c
+ * but moved here so that support/ab and ap_sha1.c could
+ * use it. This meant removing the ap_palloc()s and adding
+ * ugly 'len' functions, which is quite a nasty cost.
+ */
+
+#include <string.h>
+
+#include "ap_config.h"
+#include "ap.h"
+
+#ifdef CHARSET_EBCDIC
+#include "ebcdic.h"
+#endif				/* CHARSET_EBCDIC */
+
+/* aaaack but it's fast and const should make it shared text page. */
+static const unsigned char pr2six[256] =
+{
+#ifndef 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, 64, 64, 63,
+    52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 64, 64, 64, 64, 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, 64,
+    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 /*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,
+    64, 63, 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, 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 /*CHARSET_EBCDIC*/
+};
+
+API_EXPORT(int) ap_base64decode_len(const char *bufcoded)
+{
+    int nbytesdecoded;
+    register const unsigned char *bufin;
+    register int nprbytes;
+
+    bufin = (const unsigned char *) bufcoded;
+    while (pr2six[*(bufin++)] <= 63);
+
+    nprbytes = (bufin - (const unsigned char *) bufcoded) - 1;
+    nbytesdecoded = ((nprbytes + 3) / 4) * 3;
+
+    return nbytesdecoded + 1;
+}
+
+API_EXPORT(int) ap_base64decode(char *bufplain, const char *bufcoded)
+{
+#ifdef CHARSET_EBCDIC
+    int i;
+#endif				/* CHARSET_EBCDIC */
+    int len;
+    
+    len = ap_base64decode_binary((unsigned char *) bufplain, bufcoded);
+#ifdef CHARSET_EBCDIC
+    for (i = 0; i < len; i++)
+	bufplain[i] = os_toebcdic[bufplain[i]];
+#endif				/* CHARSET_EBCDIC */
+    return len;
+}
+
+/* This is the same as ap_base64udecode() except on EBCDIC machines, where
+ * the conversion of the output to ebcdic is left out.
+ */
+API_EXPORT(int) ap_base64decode_binary(unsigned char *bufplain,
+				   const char *bufcoded)
+{
+    int nbytesdecoded;
+    register const unsigned char *bufin;
+    register unsigned char *bufout;
+    register int nprbytes;
+
+    bufin = (const unsigned char *) bufcoded;
+    while (pr2six[*(bufin++)] <= 63);
+    nprbytes = (bufin - (const unsigned char *) bufcoded) - 1;
+    nbytesdecoded = ((nprbytes + 3) / 4) * 3;
+
+    bufout = (unsigned char *) bufplain;
+    bufin = (const unsigned char *) bufcoded;
+
+    while (nprbytes > 4) {
+	*(bufout++) =
+	    (unsigned char) (pr2six[*bufin] << 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;
+    }
+
+    /* Note: (nprbytes == 1) would be an error, so just ingore that case */
+    if (nprbytes > 1) {
+	*(bufout++) =
+	    (unsigned char) (pr2six[*bufin] << 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]]);
+    }
+
+    *(bufout++) = '\0';
+    nbytesdecoded -= (4 - nprbytes) & 3;
+    return nbytesdecoded;
+}
+
+static const char basis_64[] =
+    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+API_EXPORT(int) ap_base64encode_len(int len)
+{
+    return ((len + 2) / 3 * 4) + 1;
+}
+
+API_EXPORT(int) ap_base64encode(char *encoded, const char *string, int len)
+{
+#ifndef CHARSET_EBCDIC
+    return ap_base64encode_binary(encoded, (const unsigned char *) string, len);
+#else				/* CHARSET_EBCDIC */
+    int i;
+    char *p;
+
+    p = encoded;
+    for (i = 0; i < len - 2; i += 3) {
+	*p++ = basis_64[(os_toascii[string[i]] >> 2) & 0x3F];
+	*p++ = basis_64[((os_toascii[string[i]] & 0x3) << 4) |
+	                ((int) (os_toascii[string[i + 1]] & 0xF0) >> 4)];
+	*p++ = basis_64[((os_toascii[string[i + 1]] & 0xF) << 2) |
+	                ((int) (os_toascii[string[i + 2]] & 0xC0) >> 6)];
+	*p++ = basis_64[os_toascii[string[i + 2]] & 0x3F];
+    }
+    if (i < len) {
+	*p++ = basis_64[(os_toascii[string[i]] >> 2) & 0x3F];
+	if (i == (len - 1)) {
+	    *p++ = basis_64[((os_toascii[string[i]] & 0x3) << 4)];
+	    *p++ = '=';
+	}
+	else {
+	    *p++ = basis_64[((os_toascii[string[i]] & 0x3) << 4) |
+	                    ((int) (os_toascii[string[i + 1]] & 0xF0) >> 4)];
+	    *p++ = basis_64[((os_toascii[string[i + 1]] & 0xF) << 2)];
+	}
+	*p++ = '=';
+    }
+
+    *p++ = '\0';
+    return p - encoded;
+#endif				/* CHARSET_EBCDIC */
+}
+
+/* This is the same as ap_base64encode() except on EBCDIC machines, where
+ * the conversion of the input to ascii is left out.
+ */
+API_EXPORT(int) ap_base64encode_binary(char *encoded,
+                                       const unsigned char *string, int len)
+{
+    int i;
+    char *p;
+
+    p = encoded;
+    for (i = 0; i < len - 2; i += 3) {
+	*p++ = basis_64[(string[i] >> 2) & 0x3F];
+	*p++ = basis_64[((string[i] & 0x3) << 4) |
+	                ((int) (string[i + 1] & 0xF0) >> 4)];
+	*p++ = basis_64[((string[i + 1] & 0xF) << 2) |
+	                ((int) (string[i + 2] & 0xC0) >> 6)];
+	*p++ = basis_64[string[i + 2] & 0x3F];
+    }
+    if (i < len) {
+	*p++ = basis_64[(string[i] >> 2) & 0x3F];
+	if (i == (len - 1)) {
+	    *p++ = basis_64[((string[i] & 0x3) << 4)];
+	    *p++ = '=';
+	}
+	else {
+	    *p++ = basis_64[((string[i] & 0x3) << 4) |
+	                    ((int) (string[i + 1] & 0xF0) >> 4)];
+	    *p++ = basis_64[((string[i + 1] & 0xF) << 2)];
+	}
+	*p++ = '=';
+    }
+
+    *p++ = '\0';
+    return p - encoded;
+}
diff --git a/encoding/apr_base64.c b/encoding/apr_base64.c
new file mode 100644
index 00000000..89cda4b5
--- /dev/null
+++ b/encoding/apr_base64.c
@@ -0,0 +1,272 @@
+/* ====================================================================
+ * Copyright (c) 1995-1999 The Apache Group.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the Apache Group
+ *    for use in the Apache HTTP server project (http://www.apache.org/)."
+ *
+ * 4. The names "Apache Server" and "Apache Group" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    apache@apache.org.
+ *
+ * 5. Products derived from this software may not be called "Apache"
+ *    nor may "Apache" appear in their names without prior written
+ *    permission of the Apache Group.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the Apache Group
+ *    for use in the Apache HTTP server project (http://www.apache.org/)."
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE APACHE GROUP OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Group and was originally based
+ * on public domain software written at the National Center for
+ * Supercomputing Applications, University of Illinois, Urbana-Champaign.
+ * For more information on the Apache Group and the Apache HTTP server
+ * project, please see <http://www.apache.org/>.
+ *
+ */
+
+/* base64 encoder/decoder. Originally part of main/util.c
+ * but moved here so that support/ab and ap_sha1.c could
+ * use it. This meant removing the ap_palloc()s and adding
+ * ugly 'len' functions, which is quite a nasty cost.
+ */
+
+#include <string.h>
+
+#include "ap_config.h"
+#include "ap.h"
+
+#ifdef CHARSET_EBCDIC
+#include "ebcdic.h"
+#endif				/* CHARSET_EBCDIC */
+
+/* aaaack but it's fast and const should make it shared text page. */
+static const unsigned char pr2six[256] =
+{
+#ifndef 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, 64, 64, 63,
+    52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 64, 64, 64, 64, 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, 64,
+    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 /*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,
+    64, 63, 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, 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 /*CHARSET_EBCDIC*/
+};
+
+API_EXPORT(int) ap_base64decode_len(const char *bufcoded)
+{
+    int nbytesdecoded;
+    register const unsigned char *bufin;
+    register int nprbytes;
+
+    bufin = (const unsigned char *) bufcoded;
+    while (pr2six[*(bufin++)] <= 63);
+
+    nprbytes = (bufin - (const unsigned char *) bufcoded) - 1;
+    nbytesdecoded = ((nprbytes + 3) / 4) * 3;
+
+    return nbytesdecoded + 1;
+}
+
+API_EXPORT(int) ap_base64decode(char *bufplain, const char *bufcoded)
+{
+#ifdef CHARSET_EBCDIC
+    int i;
+#endif				/* CHARSET_EBCDIC */
+    int len;
+    
+    len = ap_base64decode_binary((unsigned char *) bufplain, bufcoded);
+#ifdef CHARSET_EBCDIC
+    for (i = 0; i < len; i++)
+	bufplain[i] = os_toebcdic[bufplain[i]];
+#endif				/* CHARSET_EBCDIC */
+    return len;
+}
+
+/* This is the same as ap_base64udecode() except on EBCDIC machines, where
+ * the conversion of the output to ebcdic is left out.
+ */
+API_EXPORT(int) ap_base64decode_binary(unsigned char *bufplain,
+				   const char *bufcoded)
+{
+    int nbytesdecoded;
+    register const unsigned char *bufin;
+    register unsigned char *bufout;
+    register int nprbytes;
+
+    bufin = (const unsigned char *) bufcoded;
+    while (pr2six[*(bufin++)] <= 63);
+    nprbytes = (bufin - (const unsigned char *) bufcoded) - 1;
+    nbytesdecoded = ((nprbytes + 3) / 4) * 3;
+
+    bufout = (unsigned char *) bufplain;
+    bufin = (const unsigned char *) bufcoded;
+
+    while (nprbytes > 4) {
+	*(bufout++) =
+	    (unsigned char) (pr2six[*bufin] << 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;
+    }
+
+    /* Note: (nprbytes == 1) would be an error, so just ingore that case */
+    if (nprbytes > 1) {
+	*(bufout++) =
+	    (unsigned char) (pr2six[*bufin] << 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]]);
+    }
+
+    *(bufout++) = '\0';
+    nbytesdecoded -= (4 - nprbytes) & 3;
+    return nbytesdecoded;
+}
+
+static const char basis_64[] =
+    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+API_EXPORT(int) ap_base64encode_len(int len)
+{
+    return ((len + 2) / 3 * 4) + 1;
+}
+
+API_EXPORT(int) ap_base64encode(char *encoded, const char *string, int len)
+{
+#ifndef CHARSET_EBCDIC
+    return ap_base64encode_binary(encoded, (const unsigned char *) string, len);
+#else				/* CHARSET_EBCDIC */
+    int i;
+    char *p;
+
+    p = encoded;
+    for (i = 0; i < len - 2; i += 3) {
+	*p++ = basis_64[(os_toascii[string[i]] >> 2) & 0x3F];
+	*p++ = basis_64[((os_toascii[string[i]] & 0x3) << 4) |
+	                ((int) (os_toascii[string[i + 1]] & 0xF0) >> 4)];
+	*p++ = basis_64[((os_toascii[string[i + 1]] & 0xF) << 2) |
+	                ((int) (os_toascii[string[i + 2]] & 0xC0) >> 6)];
+	*p++ = basis_64[os_toascii[string[i + 2]] & 0x3F];
+    }
+    if (i < len) {
+	*p++ = basis_64[(os_toascii[string[i]] >> 2) & 0x3F];
+	if (i == (len - 1)) {
+	    *p++ = basis_64[((os_toascii[string[i]] & 0x3) << 4)];
+	    *p++ = '=';
+	}
+	else {
+	    *p++ = basis_64[((os_toascii[string[i]] & 0x3) << 4) |
+	                    ((int) (os_toascii[string[i + 1]] & 0xF0) >> 4)];
+	    *p++ = basis_64[((os_toascii[string[i + 1]] & 0xF) << 2)];
+	}
+	*p++ = '=';
+    }
+
+    *p++ = '\0';
+    return p - encoded;
+#endif				/* CHARSET_EBCDIC */
+}
+
+/* This is the same as ap_base64encode() except on EBCDIC machines, where
+ * the conversion of the input to ascii is left out.
+ */
+API_EXPORT(int) ap_base64encode_binary(char *encoded,
+                                       const unsigned char *string, int len)
+{
+    int i;
+    char *p;
+
+    p = encoded;
+    for (i = 0; i < len - 2; i += 3) {
+	*p++ = basis_64[(string[i] >> 2) & 0x3F];
+	*p++ = basis_64[((string[i] & 0x3) << 4) |
+	                ((int) (string[i + 1] & 0xF0) >> 4)];
+	*p++ = basis_64[((string[i + 1] & 0xF) << 2) |
+	                ((int) (string[i + 2] & 0xC0) >> 6)];
+	*p++ = basis_64[string[i + 2] & 0x3F];
+    }
+    if (i < len) {
+	*p++ = basis_64[(string[i] >> 2) & 0x3F];
+	if (i == (len - 1)) {
+	    *p++ = basis_64[((string[i] & 0x3) << 4)];
+	    *p++ = '=';
+	}
+	else {
+	    *p++ = basis_64[((string[i] & 0x3) << 4) |
+	                    ((int) (string[i + 1] & 0xF0) >> 4)];
+	    *p++ = basis_64[((string[i + 1] & 0xF) << 2)];
+	}
+	*p++ = '=';
+    }
+
+    *p++ = '\0';
+    return p - encoded;
+}