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/* 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.
*/
/*
* Simple password verify, which 'know's about various password
* types, such as the simple base64 encoded crypt()s, MD5 $ marked
* FreeBSD style and netscape SHA1's.
*/
#include <string.h>
#include "ap_config.h"
#include "ap_md5.h"
#include "ap_sha1.h"
#include "ap.h"
#if HAVE_CRYPT_H
#include <crypt.h>
#endif
/*
* Validate a plaintext password against a smashed one. Use either
* crypt() (if available), ap_MD5Encode() or ap_SHA1Encode depending
* upon the format of the smashed input password.
*
* Return NULL if they match, or an explanatory text string if they don't.
*/
API_EXPORT(char *) ap_validate_password(const char *passwd, const char *hash)
{
char sample[120];
/* FreeBSD style MD5 string
*/
if (strncmp(hash, AP_MD5PW_ID, AP_MD5PW_IDLEN) == 0) {
ap_MD5Encode((const unsigned char *)passwd,
(const unsigned char *)hash, sample, sizeof(sample));
}
/* Netscape / SHA1 ldap style strng
*/
else if (strncmp(hash, AP_SHA1PW_ID, AP_SHA1PW_IDLEN) == 0) {
ap_sha1_base64(passwd, strlen(passwd), sample);
}
else {
/*
* It's not our algorithm, so feed it to crypt() if possible.
*/
#if defined(WIN32) || defined(NETWARE)
/*
* On Windows, the only alternative to our MD5 algorithm is plain
* text.
*/
ap_cpystrn(sample, passwd, sizeof(sample) - 1);
#else
ap_cpystrn(sample, (char *)crypt(passwd, hash), sizeof(sample) - 1);
#endif
}
return (strcmp(sample, hash) == 0) ? NULL : "password mismatch";
}
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