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idn2_register_u8(3) libidn2 idn2_register_u8(3) NAME idn2_register_u8 - API function SYNOPSIS #include <idn2.h> int idn2_register_u8(const uint8_t * ulabel, const uint8_t * alabel, uint8_t ** insertname, int flags); ARGUMENTS const uint8_t * ulabel input zero-terminated UTF-8 and Unicode NFC string, or NULL. const uint8_t * alabel input zero-terminated ACE encoded string (xn--), or NULL. uint8_t ** insertname newly allocated output variable with name to register in DNS. int flags optional idn2_flags to modify behaviour. DESCRIPTION Perform IDNA2008 register string conversion on domain label ulabel and alabel , as described in section 4 of RFC 5891. Note that the input ula- bel must be encoded in UTF-8 and be in Unicode NFC form. Pass IDN2_NFC_INPUT in flags to convert input ulabel to NFC form before further processing. It is recommended to supply both ulabel and alabel for better error checking, but supplying just one of them will work. Passing in only ala- bel is better than only ulabel . See RFC 5891 section 4 for more informa- tion. After version 0.11: insertname may be NULL to test conversion of src without allocating memory. RETURNS On successful conversion IDN2_OK is returned, when the given ulabel and alabel does not match each other IDN2_UALABEL_MISMATCH is returned, when either of the input labels are too long IDN2_TOO_BIG_LABEL is returned, when alabel does does not appear to be a proper A-label IDN2_INVALID_ALA- BEL is returned, or another error code is returned. REPORTING BUGS Report bugs to <help-libidn@gnu.org>. General guidelines for reporting bugs: https://www.gnu.org/gethelp/ Libidn2 home page: https://www.gnu.org/software/libidn2/ COPYRIGHT Copyright (C) 2002-2025 Simon Josefsson. Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. SEE ALSO The full documentation for libidn2 is maintained as a Texinfo manual. If the info and libidn2 programs are properly installed at your site, the com- mand info libidn2 should give you access to the complete manual. As an alternative you may obtain the manual from: https://www.gnu.org/software/libidn/libidn2/manual/ libidn2 2.3.8 idn2_register_u8(3)
NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURNS | REPORTING BUGS | COPYRIGHT | SEE ALSO
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