53 lines
2.0 KiB
C
53 lines
2.0 KiB
C
/* Copyright (c) 2001, Matej Pfajfar.
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* Copyright (c) 2001-2004, Roger Dingledine.
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* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
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* Copyright (c) 2007-2017, The Tor Project, Inc. */
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/* See LICENSE for licensing information */
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#ifndef TOR_UTIL_FORMAT_H
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#define TOR_UTIL_FORMAT_H
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#include "testsupport.h"
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#include "torint.h"
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/** @{ */
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/** These macros don't check for overflow. Use them only for constant inputs
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* (like array declarations). The *_LEN macros are the raw encoding lengths
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* (without terminating NUL), while the *_BUFSIZE macros count the terminating
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* NUL. */
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#define BASE64_LEN(n) (CEIL_DIV((n), 3) * 4)
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#define BASE32_LEN(n) (CEIL_DIV((n), 5) * 8)
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#define BASE16_LEN(n) ((n) * 2)
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#define BASE64_BUFSIZE(n) (BASE64_LEN(n) + 1)
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#define BASE32_BUFSIZE(n) (BASE32_LEN(n) + 1)
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#define BASE16_BUFSIZE(n) (BASE16_LEN(n) + 1)
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#define BASE64_NOPAD_LEN(n) (CEIL_DIV((n) * 4, 3))
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#define BASE32_NOPAD_LEN(n) (CEIL_DIV((n) * 8, 5))
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#define BASE64_NOPAD_BUFSIZE(n) (BASE64_NOPAD_LEN(n) + 1)
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#define BASE32_NOPAD_BUFSIZE(n) (BASE32_NOPAD_LEN(n) + 1)
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/** @} */
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#define BASE64_ENCODE_MULTILINE 1
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size_t base64_encode_size(size_t srclen, int flags);
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int base64_encode(char *dest, size_t destlen, const char *src, size_t srclen,
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int flags);
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int base64_decode(char *dest, size_t destlen, const char *src, size_t srclen);
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int base64_encode_nopad(char *dest, size_t destlen,
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const uint8_t *src, size_t srclen);
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/** Characters that can appear (case-insensitively) in a base32 encoding. */
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#define BASE32_CHARS "abcdefghijklmnopqrstuvwxyz234567"
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void base32_encode(char *dest, size_t destlen, const char *src, size_t srclen);
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int base32_decode(char *dest, size_t destlen, const char *src, size_t srclen);
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size_t base32_encoded_size(size_t srclen);
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int hex_decode_digit(char c);
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void base16_encode(char *dest, size_t destlen, const char *src, size_t srclen);
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int base16_decode(char *dest, size_t destlen, const char *src, size_t srclen);
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#endif /* !defined(TOR_UTIL_FORMAT_H) */
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