Implements core NIP-26 delegated event functionality. Events can
include a `delegation` tag that provides a signature and restrictions
on which events can be delegated.
Notable points on the implementation so far:
* Schema has been upgraded to include an index and new column.
* Basic rune parsing/evaluation to implement the example event in the
NIP, but no more.
* No special logic for deletion.
* No migration logic for determining delegated authors for
already-stored events.
Only lowercase and even-length tag values are stored as binary BLOBs.
Previously there was an error which search results from being returned
if the tag value was mixed-case and could be interpreted as hex.
A new database migration has been created to repair the `tag` table
for existing relays.
fixes: https://todo.sr.ht/~gheartsfield/nostr-rs-relay/37
This adds a new configurable feature to restrict event publishing to
only users with NIP-05 verified metadata. Domains can be whitelisted
or blacklisted. Verification expiration and schedules are
configurable.
This upgrades the database to add a table for tracking verification
records.
This is an experimental feature, outside of any NIP, that demonstrates
generic tag queries.
Instead of limiting subscription filters to just querying only "e" or
"p" tags (via `#e` or `#p` attributes), any tag can be queried.
As an example, consider an event which uses a tag "url". With this
modification, a subscription filter could add a top-level field
"#url", with an array of strings as the key. Exact matches would be
returned.
A NIP is forthcoming to formalize this.
Switched to latest (git) release of secp256k1, which has more
efficient verification-only context for Schnorr. Switched to single
pre-instantiated instance of the verifier.
Greg Heartsfield
William Casarin
Raj