KRB5_RD_ERROR(3)

💖 KRB5_RD_ERROR 💖

okay bestie, so this is the KRB5_RD_ERROR(3) page from the Library Functions Manual, and it's literally all about parsing, freeing, and reading errors out of a KRB-ERROR message. it lives in the Kerberos 5 Library (that's libkrb5, link it with -lkrb5, mwah 💅).

✨ NAME ✨

krb5_rd_error, krb5_free_error, krb5_free_error_contents, krb5_error_from_rd_error — parse, free and read error from KRB-ERROR message 🫶

📚 LIBRARY 📚

Kerberos 5 Library (libkrb5, -lkrb5) — she's iconic, she's linked in, she's ready.

🌸 SYNOPSIS 🌸

#include <krb5.h>

krb5_error_code
krb5_rd_error(krb5_context context, const krb5_data *msg,
    KRB_ERROR *result);

void
krb5_free_error(krb5_context context, krb5_error *error);

void
krb5_free_error_contents(krb5_context context, krb5_error *error);

krb5_error_code
krb5_error_from_rd_error(krb5_context context, const krb5_error *error,
    const krb5_creds *creds);

🦋 DESCRIPTION 🦋

okay so real talk: normally your app is never gonna need to parse and understand Kerberos error messages, because the higher level functions already parse them and push the error up into the krb5_context for you. so like… these functions exist for completeness. no cap. they're described here because the docs gotta be thorough, not because you need them on the daily 💀

krb5_rd_error() parses and returns the kerboeros error message. and listen — that structure? it should be freed with krb5_free_error_contents() once the caller is done with it. don't leave her hanging 🙈

krb5_free_error() frees the content and the memory region holding the structure itself. both. she takes everything. periodt.

krb5_free_error_contents() frees the content of the KRB-ERROR message. just the contents, not the whole structure. lowkey specific, highkey useful 💅

krb5_error_from_rd_error() will parse the error message and set the error buffer in krb5_context to the error string passed back — or the matching error code in the KRB-ERROR message. and then, bestie, the caller should pick up the message with krb5_get_error_string(3). oh and don't forget to free the returned string with krb5_free_error_string() — I'm literally begging you, free your strings 🫶✨

fr fr: if you don't free the string from krb5_get_error_string(3), that's a leak and we do not stan leaks in this house 💀

👑 SEE ALSO 👑

krb5(3), krb5_set_error_string(3), krb5_get_error_string(3), krb5.conf(5)

and that's the whole vibe, bestie 🎀 this was the HEIMDAL flavor of KRB5_RD_ERROR(3), dated July 26, 2004 — yes she's an elder but she still ate 💖 mwah, go free your errors ✨🌸