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nxdns/src/config/limits.zig
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milestone 28: query provenance — every logged query is exactly explainable
query rows gain qclass, rcode, group, policy action and reason, the
matched rule or list entry with its source, cname and safe-search
targets, route kind, forward zone, and the resolver that actually
answered — the pool and local markers die. servfails are logged and
name the resolver that lost; post-parse protocol refusals become rows.
a detail page at /queries/:id renders the ordered explanation, and
coverage watermarks distinguish an empty history from a missing one.

the schema fingerprint changes: existing query history is recreated
with the old file kept aside and the reset filed as a resolved
diagnostic. fixes an oversized udp reply being rebuilt as noerror,
which handed clients a truncated nxdomain as success.
2026-08-22 09:16:40 +02:00

20 lines
874 B
Zig

//! Length caps on the configuration labels that the query log copies into every
//! row it writes.
//!
//! They live in a module of their own because two files need them and neither
//! may import the other: `config/validate.zig` rejects a name that exceeds a cap
//! and `storage/logger.zig` sizes an `Entry` buffer from it, while `validate`
//! already imports `logger` for the entry-size budget it derives. A cap owned by
//! either file would close that loop.
//!
//! The values are deliberately short. A group or a source name is a label an
//! operator reads in a table cell, and every byte of it is copied into every
//! logged row — the cap is what keeps a pasted paragraph out of an `Entry` that
//! travels by value through the queue.
/// `groups[].name`.
pub const max_group_name_len = 64;
/// `blocklist_sources[].name`.
pub const max_source_name_len = 64;