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winamp/Src/auth/b64.h
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/* /////////////////////////////////////////////////////////////////////////////
* File: b64/b64.h
*
* Purpose: Header file for the b64 library
*
* Created: 18th October 2004
* Updated: 15th March 2008
*
* Thanks: To Adam McLaurin, for ideas regarding the b64_decode2() and
* b64_encode2().
*
* Home: http://synesis.com.au/software/
*
* Copyright (c) 2004-2008, Matthew Wilson and Synesis Software
* 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(s) of Matthew Wilson and Synesis Software nor the names of
* any 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 OWNER 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 b64/b64.h
*
* \brief [C/C++] Header file for the b64 library.
*/
#ifndef B64_INCL_B64_H_B64
#define B64_INCL_B64_H_B64
/* /////////////////////////////////////////////////////////////////////////////
* Version information
*/
#ifndef B64_DOCUMENTATION_SKIP_SECTION
# define B64_VER_B64_H_B64_MAJOR 1
# define B64_VER_B64_H_B64_MINOR 5
# define B64_VER_B64_H_B64_REVISION 1
# define B64_VER_B64_H_B64_EDIT 25
#endif /* !B64_DOCUMENTATION_SKIP_SECTION */
/** \def B64_VER_MAJOR
* The major version number of b64
*/
/** \def B64_VER_MINOR
* The minor version number of b64
*/
/** \def B64_VER_REVISION
* The revision version number of b64
*/
/** \def B64_VER
* The current composite version number of b64
*/
#ifndef B64_DOCUMENTATION_SKIP_SECTION
# define B64_VER_1_0_1 0x01000100
# define B64_VER_1_0_2 0x01000200
# define B64_VER_1_0_3 0x01000300
# define B64_VER_1_1_1 0x01010100
# define B64_VER_1_1_2 0x01010200
# define B64_VER_1_1_3 0x01010300
# define B64_VER_1_2_1 0x01020100
# define B64_VER_1_2_2 0x01020200
# define B64_VER_1_2_3 0x01020300
# define B64_VER_1_2_4 0x01020400
# define B64_VER_1_2_5 0x01020500
# define B64_VER_1_2_6 0x01020600
# define B64_VER_1_2_7 0x01020700
# define B64_VER_1_3_1 0x010301ff
# define B64_VER B64_VER_1_3_1
#else /* ? B64_DOCUMENTATION_SKIP_SECTION */
# define B64_VER 0x010301ff
#endif /* !B64_DOCUMENTATION_SKIP_SECTION */
#define B64_VER_MAJOR 1
#define B64_VER_MINOR 3
#define B64_VER_REVISION 1
/* /////////////////////////////////////////////////////////////////////////////
* Includes
*/
#include <stddef.h>
/* /////////////////////////////////////////////////////////////////////////////
* Namespace
*/
#if !defined(B64_NO_NAMESPACE) && \
!defined(__cplusplus)
# define B64_NO_NAMESPACE
#endif /* !B64_NO_NAMESPACE && !__cplusplus */
#ifdef B64_NAMESPACE
# undef B64_NAMESPACE
#endif /* B64_NAMESPACE */
#ifdef B64_NAMESPACE_QUALIFIER
# undef B64_NAMESPACE_QUALIFIER
#endif /* B64_NAMESPACE_QUALIFIER */
#ifndef B64_NO_NAMESPACE
# ifdef B64_CUSTOM_NAMESPACE
# define B64_NAMESPACE B64_CUSTOM_NAMESPACE
# else /* ? B64_CUSTOM_NAMESPACE */
# define B64_NAMESPACE b64
# endif /* B64_CUSTOM_NAMESPACE */
# if defined(B64_CUSTOM_NAMESPACE) && \
defined(B64_CUSTOM_NAMESPACE_QUALIFIER)
# define B64_NAMESPACE_QUALIFIER B64_CUSTOM_NAMESPACE_QUALIFIER
# else /* B64_CUSTOM_NAMESPACE && B64_CUSTOM_NAMESPACE_QUALIFIER */
# define B64_NAMESPACE_QUALIFIER ::B64_NAMESPACE
# endif /* B64_CUSTOM_NAMESPACE && B64_CUSTOM_NAMESPACE_QUALIFIER */
/** \brief [C/C++] The b64 namespace, within which the core library types and functions
* reside in C++ compilation. In C compilation, they all reside in the global
* namespace.
*
* \htmlonly
* <hr>
* \endhtmlonly
*/
namespace B64_NAMESPACE
{
#endif /* !B64_NO_NAMESPACE */
/* /////////////////////////////////////////////////////////////////////////////
* Enumerations
*/
/** \brief Return codes (from b64_encode2() / b64_decode2())
*/
enum B64_RC
{
B64_RC_OK = 0 /*!< Operation was successful. */
, B64_RC_INSUFFICIENT_BUFFER = 1 /*!< The given translation buffer was not of sufficient size. */
, B64_RC_TRUNCATED_INPUT = 2 /*!< The input did not represent a fully formed stream of octet couplings. */
, B64_RC_DATA_ERROR = 3 /*!< Invalid data. */
#ifndef B64_DOCUMENTATION_SKIP_SECTION
, B64_max_RC_value
#endif /* !B64_DOCUMENTATION_SKIP_SECTION */
};
#ifndef __cplusplus
typedef enum B64_RC B64_RC;
#endif /* !__cplusplus */
/** \brief Coding behaviour modification flags (for b64_encode2() / b64_decode2())
*/
enum B64_FLAGS
{
B64_F_LINE_LEN_USE_PARAM = 0x0000 /*!< Uses the lineLen parameter to b64_encode2(). Ignored by b64_decode2(). */
, B64_F_LINE_LEN_INFINITE = 0x0001 /*!< Ignores the lineLen parameter to b64_encode2(). Line length is infinite. Ignored by b64_decode2(). */
, B64_F_LINE_LEN_64 = 0x0002 /*!< Ignores the lineLen parameter to b64_encode2(). Line length is 64. Ignored by b64_decode2(). */
, B64_F_LINE_LEN_76 = 0x0003 /*!< Ignores the lineLen parameter to b64_encode2(). Line length is 76. Ignored by b64_decode2(). */
, B64_F_LINE_LEN_MASK = 0x000f /*!< Mask for testing line length flags to b64_encode2(). Ignored by b64_encode2(). */
, B64_F_STOP_ON_NOTHING = 0x0000 /*!< Decoding ignores all invalid characters in the input data. Ignored by b64_encode2(). */
, B64_F_STOP_ON_UNKNOWN_CHAR = 0x0100 /*!< Causes decoding to break if any non-Base-64 [a-zA-Z0-9=+/], non-whitespace character is encountered. Ignored by b64_encode2(). */
, B64_F_STOP_ON_UNEXPECTED_WS = 0x0200 /*!< Causes decoding to break if any unexpected whitespace is encountered. Ignored by b64_encode2(). */
, B64_F_STOP_ON_BAD_CHAR = 0x0300 /*!< Causes decoding to break if any non-Base-64 [a-zA-Z0-9=+/] character is encountered. Ignored by b64_encode2(). */
};
#ifndef __cplusplus
typedef enum B64_FLAGS B64_FLAGS;
#endif /* !__cplusplus */
/* /////////////////////////////////////////////////////////////////////////////
* Functions
*/
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/** \brief Encodes a block of binary data into Base-64
*
* \param src Pointer to the block to be encoded. May not be NULL, except when
* \c dest is NULL, in which case it is ignored.
* \param srcSize Length of block to be encoded
* \param dest Pointer to the buffer into which the result is to be written. May
* be NULL, in which case the function returns the required length
* \param destLen Length of the buffer into which the result is to be written. Must
* be at least as large as that indicated by the return value from
* \link b64::b64_encode b64_encode(NULL, srcSize, NULL, 0)\endlink.
*
* \return 0 if the size of the buffer was insufficient, or the length of the
* converted buffer was longer than \c destLen
*
* \note The function returns the required length if \c dest is NULL
*
* \note The function returns the required length if \c dest is NULL. The returned size
* might be larger than the actual required size, but will never be smaller.
*
* \note Threading: The function is fully re-entrant.
*
* \see b64::encode()
*/
size_t b64_encode(void const *src, size_t srcSize, char *dest, size_t destLen);
/** \brief Encodes a block of binary data into Base-64
*
* \param src Pointer to the block to be encoded. May not be NULL, except when
* \c dest is NULL, in which case it is ignored.
* \param srcSize Length of block to be encoded
* \param dest Pointer to the buffer into which the result is to be written. May
* be NULL, in which case the function returns the required length
* \param destLen Length of the buffer into which the result is to be written. Must
* be at least as large as that indicated by the return value from
* \link b64::b64_encode2 b64_encode2(NULL, srcSize, NULL, 0, flags, lineLen, rc)\endlink.
* \param flags A combination of the B64_FLAGS enumeration, that moderate the
* behaviour of the function
* \param lineLen If the flags parameter contains B64_F_LINE_LEN_USE_PARAM, then
* this parameter represents the length of the lines into which the encoded form is split,
* with a hard line break ('\\r\\n'). If this value is 0, then the line is not
* split. If it is <0, then the RFC-1113 recommended line length of 64 is used
* \param rc The return code representing the status of the operation. May be NULL.
*
* \return 0 if the size of the buffer was insufficient, or the length of the
* converted buffer was longer than \c destLen
*
* \note The function returns the required length if \c dest is NULL. The returned size
* might be larger than the actual required size, but will never be smaller.
*
* \note Threading: The function is fully re-entrant.
*
* \see b64::encode()
*/
size_t b64_encode2( void const *src
, size_t srcSize
, char *dest
, size_t destLen
, unsigned flags
, int lineLen /* = 0 */
, B64_RC *rc /* = NULL */);
/** \brief Decodes a sequence of Base-64 into a block of binary data
*
* \param src Pointer to the Base-64 block to be decoded. May not be NULL, except when
* \c dest is NULL, in which case it is ignored. If \c dest is NULL, and \c src is
* <b>not</b> NULL, then the returned value is calculated exactly, otherwise a value
* is returned that is guaranteed to be large enough to hold the decoded block.
*
* \param srcLen Length of block to be encoded. Must be an integral of 4, the Base-64
* encoding quantum, otherwise the Base-64 block is assumed to be invalid
* \param dest Pointer to the buffer into which the result is to be written. May
* be NULL, in which case the function returns the required length
* \param destSize Length of the buffer into which the result is to be written. Must
* be at least as large as that indicated by the return value from
* \c b64_decode(src, srcSize, NULL, 0), even in the case where the encoded form
* contains a number of characters that will be ignored, resulting in a lower total
* length of converted form.
*
* \return 0 if the size of the buffer was insufficient, or the length of the
* converted buffer was longer than \c destSize
*
* \note The function returns the required length if \c dest is NULL. The returned size
* might be larger than the actual required size, but will never be smaller.
*
* \note \anchor anchor__4_characters The behaviour of both
* \link b64::b64_encode2 b64_encode2()\endlink
* and
* \link b64::b64_decode2 b64_decode2()\endlink
* are undefined if the line length is not a multiple of 4.
*
* \note Threading: The function is fully re-entrant.
*
* \see b64::decode()
*/
size_t b64_decode(char const *src, size_t srcLen, void *dest, size_t destSize);
/** \brief Decodes a sequence of Base-64 into a block of binary data
*
* \param src Pointer to the Base-64 block to be decoded. May not be NULL, except when
* \c dest is NULL, in which case it is ignored. If \c dest is NULL, and \c src is
* <b>not</b> NULL, then the returned value is calculated exactly, otherwise a value
* is returned that is guaranteed to be large enough to hold the decoded block.
*
* \param srcLen Length of block to be encoded. Must be an integral of 4, the Base-64
* encoding quantum, otherwise the Base-64 block is assumed to be invalid
* \param dest Pointer to the buffer into which the result is to be written. May
* be NULL, in which case the function returns the required length
* \param destSize Length of the buffer into which the result is to be written. Must
* be at least as large as that indicated by the return value from
* \c b64_decode(src, srcSize, NULL, 0), even in the case where the encoded form
* contains a number of characters that will be ignored, resulting in a lower total
* length of converted form.
* \param flags A combination of the B64_FLAGS enumeration, that moderate the
* behaviour of the function.
* \param rc The return code representing the status of the operation. May be NULL.
* \param badChar If the flags parameter does not contain B64_F_STOP_ON_NOTHING, this
* parameter specifies the address of a pointer that will be set to point to any
* character in the sequence that stops the parsing, as dictated by the flags
* parameter. May be NULL.
*
* \return 0 if the size of the buffer was insufficient, or the length of the
* converted buffer was longer than \c destSize, or a bad character stopped parsing.
*
* \note The function returns the required length if \c dest is NULL. The returned size
* might be larger than the actual required size, but will never be smaller.
*
* \note The behaviour of both
* \link b64::b64_encode2 b64_encode2()\endlink
* and
* \link b64::b64_decode2 b64_decode2()\endlink
* are undefined if the line length is not a multiple of 4.
*
* \note Threading: The function is fully re-entrant.
*
* \see b64::decode()
*/
size_t b64_decode2( char const *src
, size_t srcLen
, void *dest
, size_t destSize
, unsigned flags
, char const **badChar /* = NULL */
, B64_RC *rc /* = NULL */);
/** \brief Returns the textual description of the error
*
* \param code The \link b64::B64_RC error code\endlink
*/
char const *b64_getErrorString(B64_RC code);
/** \brief Returns the length of the textual description of the error
*
* \see b64_getErrorString()
*
* \param code The \link b64::B64_RC error code\endlink
*/
size_t b64_getErrorStringLength(B64_RC code);
#ifdef __cplusplus
} /* extern "C" */
#endif /* __cplusplus */
/* /////////////////////////////////////////////////////////////////////////////
* Namespace
*/
#ifndef B64_NO_NAMESPACE
} /* namespace B64_NAMESPACE */
# ifndef B64_DOCUMENTATION_SKIP_SECTION
namespace stlsoft
{
inline char const *c_str_data_a( B64_NAMESPACE_QUALIFIER::B64_RC code)
{
return B64_NAMESPACE_QUALIFIER::b64_getErrorString(code);
}
inline char const *c_str_data( B64_NAMESPACE_QUALIFIER::B64_RC code)
{
return B64_NAMESPACE_QUALIFIER::b64_getErrorString(code);
}
inline size_t c_str_len_a( B64_NAMESPACE_QUALIFIER::B64_RC code)
{
return B64_NAMESPACE_QUALIFIER::b64_getErrorStringLength(code);
}
inline size_t c_str_len( B64_NAMESPACE_QUALIFIER::B64_RC code)
{
return B64_NAMESPACE_QUALIFIER::b64_getErrorStringLength(code);
}
inline char const *c_str_ptr_a( B64_NAMESPACE_QUALIFIER::B64_RC code)
{
return B64_NAMESPACE_QUALIFIER::b64_getErrorString(code);
}
inline char const *c_str_ptr( B64_NAMESPACE_QUALIFIER::B64_RC code)
{
return B64_NAMESPACE_QUALIFIER::b64_getErrorString(code);
}
} /* namespace stlsoft */
# endif /* !B64_DOCUMENTATION_SKIP_SECTION */
#endif /* !B64_NO_NAMESPACE */
/* ////////////////////////////////////////////////////////////////////////// */
#endif /* B64_INCL_B64_H_B64 */
/* ////////////////////////////////////////////////////////////////////////// */
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