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policy: uncap datacarrier by default

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Datacarrier output script sizes and output counts are now
uncapped by default.

To avoid introducing another startup argument, we modify the
OP_RETURN accounting to "budget" the spk sizes.

If a user has set a custom default, this results in that
budget being spent over the sum of all OP_RETURN outputs'
scripts in the transaction, no longer capping the number
of OP_RETURN outputs themselves. This should allow a
superset of current behavior while respecting the passed
argument in terms of total arbitrary data storage.

Co-authored-by: Anthony Towns <aj@erisian.com.au>
This commit is contained in:
Greg Sanders
2025-05-02 10:01:13 -04:00
parent 4b1d48a686
commit 9f36962b07
10 changed files with 64 additions and 67 deletions
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4
src/test/fuzz/key.cpp
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@@ -150,12 +150,12 @@ FUZZ_TARGET(key, .init = initialize_key)
assert(fillable_signing_provider_pub.HaveKey(pubkey.GetID()));
TxoutType which_type_tx_pubkey;
const bool is_standard_tx_pubkey = IsStandard(tx_pubkey_script, std::nullopt, which_type_tx_pubkey);
const bool is_standard_tx_pubkey = IsStandard(tx_pubkey_script, which_type_tx_pubkey);
assert(is_standard_tx_pubkey);
assert(which_type_tx_pubkey == TxoutType::PUBKEY);
TxoutType which_type_tx_multisig;
const bool is_standard_tx_multisig = IsStandard(tx_multisig_script, std::nullopt, which_type_tx_multisig);
const bool is_standard_tx_multisig = IsStandard(tx_multisig_script, which_type_tx_multisig);
assert(is_standard_tx_multisig);
assert(which_type_tx_multisig == TxoutType::MULTISIG);