/usr/include/htp/htp_base64.h is in libhtp-dev 3.2.1-1+deb9u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (c) 2009-2010 Open Information Security Foundation
* Copyright (c) 2010-2013 Qualys, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - Neither the name of the Qualys, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS 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 COPYRIGHT
* HOLDER OR 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.
***************************************************************************/
/**
* @file
* @author Ivan Ristic <ivanr@webkreator.com>
*/
/* Adapted from the libb64 project (http://sourceforge.net/projects/libb64), which is in public domain. */
#ifndef _HTP_BASE64_H
#define _HTP_BASE64_H
#ifdef __cplusplus
extern "C" {
#endif
#include "bstr.h"
typedef enum {
step_a, step_b, step_c, step_d
} htp_base64_decodestep;
typedef struct {
htp_base64_decodestep step;
char plainchar;
} htp_base64_decoder;
void htp_base64_decoder_init(htp_base64_decoder *state_in);
int htp_base64_decode_single(signed char value_in);
int htp_base64_decode(htp_base64_decoder *decoder, const void *code_in, int length_in, void *plaintext_out, int length_out);
bstr *htp_base64_decode_bstr(bstr *input);
bstr *htp_base64_decode_mem(const void *data, size_t len);
#ifdef __cplusplus
}
#endif
#endif /* _HTP_BASE64_H */
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