Make listsinceblock refuse unknown block hash

Change suggested by Cory Fields <cory-nospam-@coryfields.com> who noticed
listsinceblock would ignore invalid block hashes causing it to return a
completely unfiltered list of transactions.

Github-Pull: #11565
Rebased-From: 659b2061c4329472a45e913c5d45e6ab180600a3
Tree-SHA512: 2091a830b730421b49c806cb83a16c7da2ec0a7adac2bac0585324aad12a32bb99a840264c3d346937ea84786fac56e44befb6641511a417977803875efe5a21

1 files changed, 34 insertions, 1 deletions

diff --git a/test/functional/listsinceblock.py b/test/functional/listsinceblock.py
index 6f428388ec..67e7744bf8 100755
--- a/test/functional/listsinceblock.py
+++ b/test/functional/listsinceblock.py
@@ -5,7 +5,7 @@
 """Test the listsincelast RPC."""
 
 from test_framework.test_framework import BitcoinTestFramework
-from test_framework.util import assert_equal
+from test_framework.util import assert_equal, assert_array_result, assert_raises_rpc_error
 
 class ListSinceBlockTest (BitcoinTestFramework):
     def set_test_params(self):
@@ -16,10 +16,43 @@ class ListSinceBlockTest (BitcoinTestFramework):
         self.nodes[2].generate(101)
         self.sync_all()
 
+        self.test_no_blockhash()
+        self.test_invalid_blockhash()
         self.test_reorg()
         self.test_double_spend()
         self.test_double_send()
 
+    def test_no_blockhash(self):
+        txid = self.nodes[2].sendtoaddress(self.nodes[0].getnewaddress(), 1)
+        blockhash, = self.nodes[2].generate(1)
+        self.sync_all()
+
+        txs = self.nodes[0].listtransactions()
+        assert_array_result(txs, {"txid": txid}, {
+            "category": "receive",
+            "amount": 1,
+            "blockhash": blockhash,
+            "confirmations": 1,
+        })
+        assert_equal(
+            self.nodes[0].listsinceblock(),
+            {"lastblock": blockhash,
+             "removed": [],
+             "transactions": txs})
+        assert_equal(
+            self.nodes[0].listsinceblock(""),
+            {"lastblock": blockhash,
+             "removed": [],
+             "transactions": txs})
+
+    def test_invalid_blockhash(self):
+        assert_raises_rpc_error(-5, "Block not found", self.nodes[0].listsinceblock,
+                                "42759cde25462784395a337460bde75f58e73d3f08bd31fdc3507cbac856a2c4")
+        assert_raises_rpc_error(-5, "Block not found", self.nodes[0].listsinceblock,
+                                "0000000000000000000000000000000000000000000000000000000000000000")
+        assert_raises_rpc_error(-5, "Block not found", self.nodes[0].listsinceblock,
+                                "invalid-hex")
+
     def test_reorg(self):
         '''
         `listsinceblock` did not behave correctly when handed a block that was