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| Current Path : /usr/local/include/idn/ |
| Current File : //usr/local/include/idn/api.h |
/* $Id: api.h,v 1.27 2003/03/05 23:25:02 miyayama Exp $ */
/*
* Copyright (c) 2001,2002 Japan Network Information Center.
* All rights reserved.
*
* By using this file, you agree to the terms and conditions set forth bellow.
*
* LICENSE TERMS AND CONDITIONS
*
* The following License Terms and Conditions apply, unless a different
* license is obtained from Japan Network Information Center ("JPNIC"),
* a Japanese association, Kokusai-Kougyou-Kanda Bldg 6F, 2-3-4 Uchi-Kanda,
* Chiyoda-ku, Tokyo 101-0047, Japan.
*
* 1. Use, Modification and Redistribution (including distribution of any
* modified or derived work) in source and/or binary forms is permitted
* under this License Terms and Conditions.
*
* 2. Redistribution of source code must retain the copyright notices as they
* appear in each source code file, this License Terms and Conditions.
*
* 3. Redistribution in binary form must reproduce the Copyright Notice,
* this License Terms and Conditions, in the documentation and/or other
* materials provided with the distribution. For the purposes of binary
* distribution the "Copyright Notice" refers to the following language:
* "Copyright (c) 2000-2002 Japan Network Information Center. All rights reserved."
*
* 4. The name of JPNIC may not be used to endorse or promote products
* derived from this Software without specific prior written approval of
* JPNIC.
*
* 5. Disclaimer/Limitation of Liability: THIS SOFTWARE IS PROVIDED BY JPNIC
* "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 JPNIC 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 DAMAGES.
*/
#ifndef IDN_API_H
#define IDN_API_H 1
#ifdef __cplusplus
extern "C" {
#endif
#include <idn/export.h>
#include <idn/result.h>
#include <idn/res.h>
/*
* Application Programming Interface for Internationalized Domain Name
* Handling. This module provides high-level APIs for ordinary applications.
* Low-level APIs are also available. See "res.h" for details.
*/
/*
* Enable or disable IDN conversion scheme.
*
* If on_off is 0, IDN conversion scheme is disabled. Otherwise, IDN
* conversion is enabled even when IDN_DISABLE is defined.
*/
IDN_EXPORT void
idn_enable(int on_off);
/*
* Set configuration file name.
* This function is for private use only.
*
* When idn_nameinit(1) is called, this module loads `file'.
*
* Returns:
* idn_success -- ok.
* idn_nomemory -- malloc failed.
* idn_failure -- idn_nameinit() has already been
* called.
*/
extern idn_result_t
idn__setconffile(const char *file);
/*
* Initialize this module, and load configuration from the default
* configuration file (idn.conf).
*
* The initialization will be done only once when this function is
* called first, while either loading of the configuration file or
* setting the defaults behavior without the configuration file will
* be done every time it is called.
*
* If load_file is 0, this will set the defaults behavior without the
* configuration file. Otherwise, loading of the configuration file
* occurs.
*
* If 'idn_encodename' or 'idn_decodename' is called without calling
* this function, implicit initialization without the configuration
* file will be done prior to encoding/decoding process.
*
* Returns:
* idn_success -- ok.
* idn_nofile -- cannot open the configuration file.
* idn_invalid_syntax -- syntax error found in the file.
* idn_invalid_name -- there are invalid names (encoding,
* normalization etc.).
* idn_nomemory -- malloc failed.
*/
IDN_EXPORT idn_result_t
idn_nameinit(int load_file);
/*
* Encode internationalized domain name.
*
* The encoding process consists of the following 7 steps.
*
* 1. Local encoding to UTF-8 conversion
* Converts a domain name written with local encoding (e.g. ISO-
* 8859-1) to UTF-8.
* 2. Delimiter mapping,
* Maps certain characters to period (U+002E, FULL STOP).
* 3. Local mapping
* Apply character mappings according with the TLD of the domain
* name.
* 4. NAMEPREP
* Perform NAME preparation described in RFC3491.
* This step consists of the following 4 steps:
* 4.1. Mapping
* 4.2. Normalization
* 4.3. Prohibited character check
* 4.4. Unassigned check
* 5. ASCII range character check
* Checks if the domain name contains non-LDH ASCII character (not
* alpha-numeric or hypen), or it begins or end with hypen.
* 6. UTF-8 to IDN encoding conversion.
* Converts the domain name from UTF-8 to ACE (e.g. Punycode).
* 7. Length check
* Checks the length of each label.
*
* 'actions' specifies actions and options of the encoding procedure.
* Its value is a bitwise-or of the following flags:
*
* IDN_LOCALCONV -- perform local encoding to UTF-8 conversion (step 1)
* IDN_DELIMMAP -- perform delimiter mapping (step 2)
* IDN_LOCALMAP -- perform local mapping (step 3)
* IDN_MAP -- perform mapping (step 4.1)
* IDN_NORMALIZE -- perform normalization (step 4.2)
* IDN_PROHCHECK -- perform prohibited character check (step 4.3)
* IDN_UNASCHECK -- perform unassigned codepoint check (step 4.4)
* IDN_ASCCHECK -- perform ASCII range character check (step 5)
* IDN_IDNCONV -- perform UTF-8 to IDN encoding conversion (step 6)
* IDN_LENCHECK -- perform length check (step 7)
*
* Also the following flags are provided for convinience:
*
* IDN_ENCODE_QUERY -- On libidnkit, perform step 1..7, except for step
* 4.4 and 5.
* On libidnkitlite, perform step 2..7, except for
* step 4.4 and 5.
* IDN_ENCODE_STORED -- On libidnkit, perform step 1..7, except for step
* 5.
* On libidnkitlite, perform step 2..7, except for
* step 5.
* IDN_ENCODE_APP -- Same as IDN_ENCODE_QUERY.
* IDN_NAMEPREP -- perform NAMEPREP (step 4) without unassigned
* codepoint check (step 4.4).
*
* The following flag does not corresponding to a particular action,
* but an option of conversion process:
*
* IDN_UNDOIFERR -- If any step fails, the original input name is
* returned.
*
* Note that if no flags are specified, 'idn_encodename' does nothing
* fancy, just copies the given name verbatim.
*
* Returns:
* idn_success -- ok.
* idn_invalid_action -- invalid action flag specified.
* idn_invalid_encoding -- the given string has invalid/illegal
* byte sequence.
* idn_invalid_length -- invalid length of a label.
* idn_prohibited -- prohibited/unassigned code point found.
* idn_buffer_overflow -- 'tolen' is too small.
* idn_nomemory -- malloc failed.
*
* Also, if this function is called without calling 'idn_nameinit',
* the following error codes might be returned.
* idn_nofile -- cannot open the configuration file.
* idn_invalid_syntax -- syntax error found in the file.
* idn_invalid_name -- there are invalid names (encoding,
* normalization etc.).
*/
IDN_EXPORT idn_result_t
idn_encodename(idn_action_t actions, const char *from, char *to, size_t tolen);
/*
* Decode internationalized domain name.
*
* The decoding process consists of the following 5 steps.
*
* 1. delimiter mapping
* Maps certain characters to period (U+002E, FULL STOP).
* 2. NAMEPREP
* Perform NAME preparation described in RFC3491.
* This step consists of the following 4 steps:
* 2.1. Mapping
* 2.2. Normalization
* 2.3. Prohibited character check
* 2.4. Unassigned check
* 3. IDN encoding to UTF-8 conversion.
* Converts the domain name from ACE (e.g. Punycode) to UCS4.
* 4. Perform round-trip check.
* Encode the result of step 3, and then compare it with the result
* of the step 2. If they are different, the check is failed.
* 5. Convert UTF-8 to local encoding.
* If a character in the domain name cannot be converted to local
* encoding, the conversion is failed.
*
* 'actions' specifies actions of the decoding procedure.
* Its value is a bitwise-or of the following flags:
*
* IDN_DELIMMAP -- perform delimiter mapping (step 1)
* IDN_MAP -- perform mapping (step 2.1)
* IDN_NORMALIZE -- perform normalization (step 2.2)
* IDN_PROHCHECK -- perform prohibited character check (step 2.3)
* IDN_UNASCHECK -- perform unassigned codepoint check (step 2.4)
* IDN_IDNCONV -- perform IDN encoding to UTF-8 conversion (step 3)
* IDN_RTCHECK -- perform round-trip check (step 4)
* IDN_ASCCHECK -- perform ASCII range character check while
* round-trip check (step 4.1)
* IDN_LOCALCONV -- perform UTF-8 to local encoding conversion (step 5)
*
* Also the following flags are provided for the convenience:
*
* IDN_DECODE_QUERY -- On libidnkit, perform step 1..5, except for step
* 2.4 and 4.1.
* On libidnkitlite, perform step 1..3, except for
* step 2.4 and 4.1.
* IDN_DECODE_STORED -- On libidnkit, perform step 1..5, except for step
* 4.1.
* On libidnkitlite, perform step 1..3, except for
* step 4.1.
* IDN_DECODE_APP -- Same as IDN_DECODE_QUERY.
* IDN_NAMEPREP -- perform NAMEPREP (step 2) without unassigned
* codepoint check (step 2.4).
*
* If any step fails, the original input name is returned.
* 'actions' specifies what actions to take when decoding, and is
* a bitwise-or of the following flags:
*
* Note that if no flags are specified, 'idn_decodename' does nothing
* but copying the given name verbatim.
*
* Returns:
* idn_success -- ok.
* idn_invalid_action -- invalid action flag specified.
* idn_invalid_encoding -- the given string has invalid/illegal
* byte sequence.
* idn_buffer_overflow -- 'tolen' is too small.
* idn_invalid_length -- length of a label is not 1..63 characters.
* idn_nomemory -- malloc failed.
*
* Also, if this function is called without calling 'idn_nameinit',
* the following error codes might be returned.
* idn_nofile -- cannot open the configuration file.
* idn_invalid_syntax -- syntax error found in the file.
* idn_invalid_name -- there are invalid names (encoding,
* normalization etc.).
*/
IDN_EXPORT idn_result_t
idn_decodename(idn_action_t actions, const char *from, char *to, size_t tolen);
/*
* Decode internationalized domain name with auxiliary encoding
* support.
*
* This is another API for IDN string decode. The difference between
* two is whether the encoding conversion from auxiliary encoding to
* UTF-8 occurs prior to the actual decode process (read description
* of idn_res_decodename() above) or not.
*
* If auxencoding is NULL, from is treated as UTF-8 encoded string.
*
* Other arguments serve exactly same role as those of
* idn_res_decodename().
*/
idn_result_t
idn_decodename2(idn_action_t actions, const char *from, char *to, size_t tolen,
const char *auxencoding);
#ifdef __cplusplus
}
#endif
#endif /* IDN_API_H */
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