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0d4f2293ff
Replace zcache with golang-lru/v2/expirable for both the state auth cache and the OIDC state cache. Add tuning.register_cache_max_entries (default 1024) to cap the number of pending registration entries. Introduce types.RegistrationData to replace caching a full *Node; only the fields the registration callback path reads are retained. Remove the dead HSDatabase.regCache field. Drop zgo.at/zcache/v2 from go.mod.
56 lines
1.9 KiB
Go
56 lines
1.9 KiB
Go
package types
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import (
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"net/netip"
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"time"
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"tailscale.com/tailcfg"
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"tailscale.com/types/key"
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)
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// RegistrationData is the payload cached for a pending node registration.
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// It replaces the previous practice of caching a full *Node and carries
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// only the fields the registration callback path actually consumes when
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// promoting a pending registration to a real node.
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//
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// Combined with the bounded-LRU cache that holds these entries, this caps
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// the worst-case memory footprint of unauthenticated cache-fill attempts
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// at (max_entries × per_entry_size). The cache is sized so that the
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// product is bounded to a few MiB even with attacker-supplied 1 MiB
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// Hostinfos (the Noise body limit).
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type RegistrationData struct {
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// MachineKey is the cryptographic identity of the machine being
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// registered. Required.
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MachineKey key.MachinePublic
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// NodeKey is the cryptographic identity of the node session.
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// Required.
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NodeKey key.NodePublic
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// DiscoKey is the disco public key for peer-to-peer connections.
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DiscoKey key.DiscoPublic
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// Hostname is the resolved hostname for the registering node.
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// Already validated/normalised by EnsureHostname at producer time.
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Hostname string
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// Hostinfo is the original Hostinfo from the RegisterRequest,
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// stored so that the auth callback can populate the new node's
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// initial Hostinfo (and so that observability/CLI consumers see
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// fields like OS, OSVersion, and IPNVersion before the first
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// MapRequest restores the live set).
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//
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// May be nil if the client did not send Hostinfo in the original
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// RegisterRequest.
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Hostinfo *tailcfg.Hostinfo
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// Endpoints is the initial set of WireGuard endpoints the node
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// reported. The first MapRequest after registration overwrites
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// this with the live set.
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Endpoints []netip.AddrPort
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// Expiry is the optional client-requested expiry for this node.
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// May be nil if the client did not request a specific expiry.
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Expiry *time.Time
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}
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