ldns(3)

✨ NAME ✨

okay bestie, so this is the ldns(3) manual page from the library functions manual, and today's lineup is these three little icons:

• ldns_dname_is_subdomain
• ldns_dname_str_absolute
• ldns_dname_label

and the whole vibe is: check properties of dnames. that's it, that's the job 💅

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🌸 SYNOPSIS 🌸

like, here's what you gotta include first, no skips:

#include <stdint.h>
#include <stdbool.h>

#include <ldns/ldns.h>

bool ldns_dname_is_subdomain(const ldns_rdf *sub, const ldns_rdf
*parent);

bool ldns_dname_str_absolute(const char *dname_str);

ldns_rdf * ldns_dname_label(const ldns_rdf *rdf, uint8_t labelpos);

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💖 DESCRIPTION 💖

🦋 ldns_dname_is_subdomain()

this one tests whether the name sub falls under parent — as in, is sub a subdomain of parent? 🫶 and heads up: this function will return false if the given dnames are equal. so like, a name is not its own subdomain, ok? noted.

• sub — the name to test
• parent — the parent's name

Returns true if sub falls under parent, otherwise false.

🎀 ldns_dname_str_absolute()

checks whether the given dname string is absolute — i.e. does it end with a .? that trailing dot is the whole personality trait here bestie 🔥

• *dname_str — a string representing the dname

Returns true or false.

🧚 ldns_dname_label()

looks inside the rdf, and if it's an LDNS_RDF_TYPE_DNAME it tries to retrieve a specific label. the labels are numbered starting from 0 (left most) 💜

• rdf — the rdf to look in
• labelpos — return the label with this number

Returns a ldns_rdf* with the label as name, or NULL on error. 😭

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👑 AUTHOR 👑

The ldns team at NLnet Labs.

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🐛 REPORTING BUGS 🐛

Please report bugs to dns-team@nlnetlabs.nl or on GitHub at https://github.com/NLnetLabs/ldns/issues — they genuinely wanna hear it, fr fr 🙈

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📜 COPYRIGHT 📜

Copyright (c) 2004 - 2006 NLnet Labs.

Licensed under the BSD License. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. so like, no cap, don't come for them if it breaks 💀

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🌈 SEE ALSO 🌈

perldoc Net::DNS, RFC1034, RFC1035, RFC4033, RFC4034 and RFC4035. go read, it's giving required reading 📚✨

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💅 REMARKS 💅

This manpage was automatically generated from the ldns source code. (yes, a robot wrote it. it still ate. 🍓)

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and that's a wrap, bestie 🫶 this was ldns(3), straight out of the library functions manual, dated 30 May 2006 — slay, periodt. 💖🎀🦋