cla.gno

 1package cla
 2
 3import (
 4	"chain"
 5
 6	"gno.land/p/moul/addrset"
 7)
 8
 9const SignedEvent = "CLASigned"
10
11var (
12	requiredHash string // SHA256 hash of the CLA document; empty = enforcement disabled
13	claURL       string // URL where the CLA document can be found
14	signatures   addrset.Set
15)
16
17// Sign records a CLA signature for the caller.
18// The hash must match the current required hash.
19func Sign(cur realm, hash string) {
20	if hash != requiredHash {
21		panic("hash does not match required CLA hash")
22	}
23
24	caller := cur.Previous().Address()
25	signatures.Add(caller)
26
27	chain.Emit(
28		SignedEvent,
29		"signer", caller.String(),
30		"hash", hash,
31	)
32}
33
34// HasValidSignature checks if an address has signed the current required CLA.
35// Returns true if CLA enforcement is disabled (requiredHash == ""),
36// or if the address has signed.
37func HasValidSignature(addr address) bool {
38	if requiredHash == "" {
39		return true
40	}
41	return signatures.Has(addr)
42}