Change most functions in `ratelimits` to use full ACMEIdentifier(s) as
arguments, instead of using their values as strings. This makes the
plumbing from other packages more consistent, and allows us to:
Rename `FQDNsToETLDsPlusOne` to `coveringIdentifiers` and handle IP
identifiers, parsing IPv6 addresses into their covering /64 prefixes for
CertificatesPerDomain[PerAccount] bucket keys.
Port improved IP/CIDR validation logic to NewRegistrationsPerIPAddress &
PerIPv6Range.
Rename `domain` parts of bucket keys to either `identValue` or
`domainOrCIDR`.
Rename other internal functions to clarify that they now handle
identifier values, not just domains.
Add the new reserved IPv6 address range from RFC 9780.
For deployability, don't (yet) rename rate limits themselves; and
because it remains the name of the database table, preserve the term
`fqdnSets`.
Fixes#8223
Part of #7311
Add `identifier` fields, which will soon replace the `dnsName` fields,
to:
- `corepb.Authorization`
- `corepb.Order`
- `rapb.NewOrderRequest`
- `sapb.CountFQDNSetsRequest`
- `sapb.CountInvalidAuthorizationsRequest`
- `sapb.FQDNSetExistsRequest`
- `sapb.GetAuthorizationsRequest`
- `sapb.GetOrderForNamesRequest`
- `sapb.GetValidAuthorizationsRequest`
- `sapb.NewOrderRequest`
Populate these `identifier` fields in every function that creates
instances of these structs.
Use these `identifier` fields instead of `dnsName` fields (at least
preferentially) in every function that uses these structs. When crossing
component boundaries, don't assume they'll be present, for
deployability's sake.
Deployability note: Mismatched `cert-checker` and `sa` versions will be
incompatible because of a type change in the arguments to
`sa.SelectAuthzsMatchingIssuance`.
Part of #7311
- Move default and override limits, and associated methods, out of the
Limiter to new limitRegistry struct, embedded in a new public
TransactionBuilder.
- Export Transaction and add corresponding Transaction constructor
methods for each limit Name, making Limiter and TransactionBuilder the
API for interacting with the ratelimits package.
- Implement batched Spends and Refunds on the Limiter, the new methods
accept a slice of Transactions.
- Add new boolean fields check and spend to Transaction to support more
complicated cases that can arise in batches:
1. the InvalidAuthorizations limit is checked at New Order time in a
batch with many other limits, but should only be spent when an
Authorization is first considered invalid.
2. the CertificatesPerDomain limit is overridden by
CertficatesPerDomainPerAccount, when this is the case, spends of the
CertificatesPerDomain limit should be "best-effort" but NOT deny the
request if capacity is lacking.
- Modify the existing Spend/Refund methods to support
Transaction.check/spend and 0 cost Transactions.
- Make bucketId private and add a constructor for each bucket key format
supported by ratelimits.
- Move domainsForRateLimiting() from the ra.go to ratelimits. This
avoids a circular import issue in ra.go.
Part of #5545
James Renken
Samantha Frank