util_md5.c

/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  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. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Apache" and "Apache Software Foundation" 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 name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``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 SOFTWARE FOUNDATION 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 Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * .
 *
 * Portions of this software are based upon public domain software
 * originally written at the National Center for Supercomputing Applications,
 * University of Illinois, Urbana-Champaign.
 */

static char basis_64[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

char * ap_md5contextTo64(pool *a, AP_MD5_CTX * context)
{
    unsigned char digest[18];
    char *encodedDigest;
    int i;
    char *p;

    encodedDigest = (char *) ap_pcalloc(a, 25 * sizeof(char));

    ap_MD5Final(digest, context);
    digest[sizeof(digest) - 1] = digest[sizeof(digest) - 2] = 0;

    p = encodedDigest;
    for (i = 0; i < sizeof(digest); i += 3) {
	*p++ = basis_64[digest[i] >> 2];
	*p++ = basis_64[((digest[i] & 0x3) << 4) | ((int) (digest[i + 1] & 0xF0) >> 4)];
	*p++ = basis_64[((digest[i + 1] & 0xF) << 2) | ((int) (digest[i + 2] & 0xC0) >> 6)];
	*p++ = basis_64[digest[i + 2] & 0x3F];
    }
    *p-- = '\0';
    *p-- = '=';
    *p-- = '=';
    return encodedDigest;
}

#ifdef CHARSET_EBCDIC

char * ap_md5digest(pool *p, FILE *infile, int convert)
{
    AP_MD5_CTX context;
    unsigned char buf[1000];
    int nbytes;

    ap_MD5Init(&context);
    while ((nbytes = fread(buf, 1, sizeof(buf), infile))) {
        if (!convert) {
            ascii2ebcdic(buf, buf, nbytes);
        }
      ap_MD5Update(&context, buf, nbytes);
    }
    rewind(infile);
    return ap_md5contextTo64(p, &context);
}

#else

char * ap_md5digest(pool *p, FILE *infile)
{
    AP_MD5_CTX context;
    unsigned char buf[1000];
    unsigned int nbytes;

    ap_MD5Init(&context);
    while ((nbytes = fread(buf, 1, sizeof(buf), infile))) {
	ap_MD5Update(&context, buf, nbytes);
    }
    rewind(infile);
    return ap_md5contextTo64(p, &context);
}

#endif /* CHARSET_EBCDIC */