Merge #17004: validation: Remove REJECT code from CValidationState

9075d13153ce06cd59a45644831ecc43126e1e82 [docs] Add release notes for removal of REJECT reasons (John Newbery)
04a2f326ec0f06fb4fce1c4f93500752f05dede8 [validation] Fix REJECT message comments (John Newbery)
e9d5a59e34ff2d538d8f5315efd9908bf24d0fdc [validation] Remove REJECT code from CValidationState (John Newbery)
0053e16714323c1694c834fdca74f064a1a33529 [logging] Don't log REJECT code when transaction is rejected (John Newbery)
a1a07cfe99fc8cee30ba5976dc36b47b1f6532ab [validation] Fix peer punishment for bad blocks (John Newbery)

Pull request description:

  We no longer send BIP 61 REJECT messages, so there's no need to set
  a REJECT code in the CValidationState object.

  Note that there is a minor bug fix in p2p behaviour here. Because the
  call to `MaybePunishNode()` in `PeerLogicValidation::BlockChecked()` only
  previously happened if the REJECT code was > 0 and < `REJECT_INTERNAL`,
  then there are cases were `MaybePunishNode()` can get called where it
  wasn't previously:

  - when `AcceptBlockHeader()` fails with `CACHED_INVALID`.
  - when `AcceptBlockHeader()` fails with `BLOCK_MISSING_PREV`.

  Note that `BlockChecked()` cannot fail with an 'internal' reject code. The
  only internal reject code was `REJECT_HIGHFEE`, which was only set in
  ATMP.

  This reverts a minor bug introduced in 5d08c9c579ba8cc7b684105c6a08263992b08d52.

ACKs for top commit:
  ariard:
    ACK 9075d13, changes since last reviewed are splitting them in separate commits to ease understanding and fix nits
  fjahr:
    ACK 9075d13153ce06cd59a45644831ecc43126e1e82, confirmed diff to last review was fixing nits in docs/comments.
  ryanofsky:
    Code review ACK 9075d13153ce06cd59a45644831ecc43126e1e82. Only changes since last review are splitting the main commit and updating comments

Tree-SHA512: 58e8a1a4d4e6f156da5d29fb6ad6a62fc9c594bbfc6432b3252e962d0e9e10149bf3035185dc5320c46c09f3e49662bc2973ec759679c0f3412232087cb8a3a7

1 files changed, 9 insertions, 9 deletions

diff --git a/src/consensus/tx_check.cpp b/src/consensus/tx_check.cpp
index 00ebbbd1a..120603583 100644
--- a/src/consensus/tx_check.cpp
+++ b/src/consensus/tx_check.cpp
@@ -11,24 +11,24 @@ bool CheckTransaction(const CTransaction& tx, CValidationState &state, bool fChe
 {
     // Basic checks that don't depend on any context
     if (tx.vin.empty())
-        return state.Invalid(ValidationInvalidReason::CONSENSUS, false, REJECT_INVALID, "bad-txns-vin-empty");
+        return state.Invalid(ValidationInvalidReason::CONSENSUS, false, "bad-txns-vin-empty");
     if (tx.vout.empty())
-        return state.Invalid(ValidationInvalidReason::CONSENSUS, false, REJECT_INVALID, "bad-txns-vout-empty");
+        return state.Invalid(ValidationInvalidReason::CONSENSUS, false, "bad-txns-vout-empty");
     // Size limits (this doesn't take the witness into account, as that hasn't been checked for malleability)
     if (::GetSerializeSize(tx, PROTOCOL_VERSION | SERIALIZE_TRANSACTION_NO_WITNESS) * WITNESS_SCALE_FACTOR > MAX_BLOCK_WEIGHT)
-        return state.Invalid(ValidationInvalidReason::CONSENSUS, false, REJECT_INVALID, "bad-txns-oversize");
+        return state.Invalid(ValidationInvalidReason::CONSENSUS, false, "bad-txns-oversize");
 
     // Check for negative or overflow output values (see CVE-2010-5139)
     CAmount nValueOut = 0;
     for (const auto& txout : tx.vout)
     {
         if (txout.nValue < 0)
-            return state.Invalid(ValidationInvalidReason::CONSENSUS, false, REJECT_INVALID, "bad-txns-vout-negative");
+            return state.Invalid(ValidationInvalidReason::CONSENSUS, false, "bad-txns-vout-negative");
         if (txout.nValue > MAX_MONEY)
-            return state.Invalid(ValidationInvalidReason::CONSENSUS, false, REJECT_INVALID, "bad-txns-vout-toolarge");
+            return state.Invalid(ValidationInvalidReason::CONSENSUS, false, "bad-txns-vout-toolarge");
         nValueOut += txout.nValue;
         if (!MoneyRange(nValueOut))
-            return state.Invalid(ValidationInvalidReason::CONSENSUS, false, REJECT_INVALID, "bad-txns-txouttotal-toolarge");
+            return state.Invalid(ValidationInvalidReason::CONSENSUS, false, "bad-txns-txouttotal-toolarge");
     }
 
     // Check for duplicate inputs - note that this check is slow so we skip it in CheckBlock
@@ -37,20 +37,20 @@ bool CheckTransaction(const CTransaction& tx, CValidationState &state, bool fChe
         for (const auto& txin : tx.vin)
         {
             if (!vInOutPoints.insert(txin.prevout).second)
-                return state.Invalid(ValidationInvalidReason::CONSENSUS, false, REJECT_INVALID, "bad-txns-inputs-duplicate");
+                return state.Invalid(ValidationInvalidReason::CONSENSUS, false, "bad-txns-inputs-duplicate");
         }
     }
 
     if (tx.IsCoinBase())
     {
         if (tx.vin[0].scriptSig.size() < 2 || tx.vin[0].scriptSig.size() > 100)
-            return state.Invalid(ValidationInvalidReason::CONSENSUS, false, REJECT_INVALID, "bad-cb-length");
+            return state.Invalid(ValidationInvalidReason::CONSENSUS, false, "bad-cb-length");
     }
     else
     {
         for (const auto& txin : tx.vin)
             if (txin.prevout.IsNull())
-                return state.Invalid(ValidationInvalidReason::CONSENSUS, false, REJECT_INVALID, "bad-txns-prevout-null");
+                return state.Invalid(ValidationInvalidReason::CONSENSUS, false, "bad-txns-prevout-null");
     }
 
     return true;