Merge bitcoin#29870: rpc: Reword SighashFromStr error message

fa6ab0d rpc: Reword SighashFromStr error message (MarcoFalke)

Pull request description:

  Put quotes around the parameter. In theory, `std::quoted` should be used, but that seems overkill.

  This should avoid error messages such as `A valid sighash parameter is not a valid sighash parameter. (code -8)`.

  Also, it should fix fuzz false positives when searching for internal bugs in the `rpc` fuzz target. For example, `ZGVzY3JpcHRvcnByb2Nlc3Nwc2J0XP9ce1tdXOVJbnRlcm5hbCBidWcgZGV0ZWN0ZWQAXQ0AHfcAXQ1p7TJv`.

ACKs for top commit:
  dergoegge:
    ACK fa6ab0d
  brunoerg:
    utACK fa6ab0d

Tree-SHA512: e2c0cc0126de61873a863af38b7b0a23d2dadd596ca0418dae2ad091e8acfb6a9d657c376d59187bb008989dc78c6b44fe518590e5217e4049a867b220c9fb18

Author: fanquake

src/core_read.cpp

@@ -256,6 +256,6 @@ util::Result<int> SighashFromStr(const std::string& sighash)
     if (it != map_sighash_values.end()) {
         return it->second;
     } else {
-        return util::Error{Untranslated(sighash + " is not a valid sighash parameter.")};
+        return util::Error{Untranslated("'" + sighash + "' is not a valid sighash parameter.")};
     }
 }

test/functional/rpc_psbt.py

@@ -877,7 +877,7 @@ def test_psbt_input_keys(psbt_input, keys):
             assert_equal(comb_psbt, psbt)
 
         self.log.info("Test walletprocesspsbt raises if an invalid sighashtype is passed")
-        assert_raises_rpc_error(-8, "all is not a valid sighash parameter.", self.nodes[0].walletprocesspsbt, psbt, sighashtype="all")
+        assert_raises_rpc_error(-8, "'all' is not a valid sighash parameter.", self.nodes[0].walletprocesspsbt, psbt, sighashtype="all")
 
         self.log.info("Test decoding PSBT with per-input preimage types")
         # note that the decodepsbt RPC doesn't check whether preimages and hashes match
@@ -983,7 +983,7 @@ def test_psbt_input_keys(psbt_input, keys):
         self.nodes[2].sendrawtransaction(processed_psbt['hex'])
 
         self.log.info("Test descriptorprocesspsbt raises if an invalid sighashtype is passed")
-        assert_raises_rpc_error(-8, "all is not a valid sighash parameter.", self.nodes[2].descriptorprocesspsbt, psbt, [descriptor], sighashtype="all")
+        assert_raises_rpc_error(-8, "'all' is not a valid sighash parameter.", self.nodes[2].descriptorprocesspsbt, psbt, [descriptor], sighashtype="all")
 
 
 if __name__ == '__main__':

test/functional/rpc_signrawtransactionwithkey.py

@@ -124,7 +124,7 @@ def invalid_sighashtype_test(self):
         self.log.info("Test signing transaction with invalid sighashtype")
         tx = self.nodes[0].createrawtransaction(INPUTS, OUTPUTS)
         privkeys = [self.nodes[0].get_deterministic_priv_key().key]
-        assert_raises_rpc_error(-8, "all is not a valid sighash parameter.", self.nodes[0].signrawtransactionwithkey, tx, privkeys, sighashtype="all")
+        assert_raises_rpc_error(-8, "'all' is not a valid sighash parameter.", self.nodes[0].signrawtransactionwithkey, tx, privkeys, sighashtype="all")
 
     def run_test(self):
         self.successful_signing_test()

test/functional/wallet_signrawtransactionwithwallet.py

@@ -55,7 +55,7 @@ def test_with_lock_outputs(self):
 
     def test_with_invalid_sighashtype(self):
         self.log.info("Test signrawtransactionwithwallet raises if an invalid sighashtype is passed")
-        assert_raises_rpc_error(-8, "all is not a valid sighash parameter.", self.nodes[0].signrawtransactionwithwallet, hexstring=RAW_TX, sighashtype="all")
+        assert_raises_rpc_error(-8, "'all' is not a valid sighash parameter.", self.nodes[0].signrawtransactionwithwallet, hexstring=RAW_TX, sighashtype="all")
 
     def script_verification_error_test(self):
         """Create and sign a raw transaction with valid (vin 0), invalid (vin 1) and one missing (vin 2) input script.