/* ///////////////////////////////////////////////////////////////////////////// * 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 /* ///////////////////////////////////////////////////////////////////////////// * 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 *
* \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 * not 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 * not 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 */ /* ////////////////////////////////////////////////////////////////////////// */