idn2_lookup_u8(3) - Linux man page

Name

idn2_lookup_u8 - API function

Synopsis

#include <idn2.h>

int idn2_lookup_u8(const uint8_t * src, uint8_t ** lookupname, int flags);

Arguments

const uint8_t * src: input zero-terminated UTF-8 string in Unicode NFC normalized form.
uint8_t ** lookupname: newly allocated output variable with name to lookup in DNS.
int flags: optional idn2_flags to modify behaviour.

Description

Perform IDNA2008 lookup string conversion on domain name src, as described in section 5 of RFC 5891. Note that the input string must be encoded in UTF-8 and be in Unicode NFC form.

Pass IDN2_NFC_INPUT in flags to convert input to NFC form before further processing. Pass IDN2_ALABEL_ROUNDTRIP in flags to convert any input A-labels to U-labels and perform additional testing. Multiple flags may be specified by binary or:ing them together, for example IDN2_NFC_INPUT | IDN2_ALABEL_ROUNDTRIP.

Returns