Merge #14696: qa: Add explicit references to related CVE's in p2p_invalid_block test.

0c62e3aa73839e97e65a3155e06a98d84b700a1e New regression testing for CVE-2018-17144, CVE-2012-2459, and CVE-2010-5137. (lucash-dev)
38bfca6bb2ad68719415e9c54a981441052da072 Added comments referencing multiple CVEs in tests and production code. (lucash-dev)

Pull request description:

  This functional test includes two scenarios that test for regressions of vulnerabilities, but they are only briefly described. There are freely available documents explaining in detail the issues, but without explicit mentions, the developer trying to maintain the code needs an additional step of digging in commit history and PR conversations to figure it out.
  Added comments to explicitly mention  CVE-2018-17144 and CVE-2012-2459, for more complete documentation.
  This improves developer experience by making understanding the tests easier.

ACKs for top commit:
  laanwj:
    ACK 0c62e3aa73839e97e65a3155e06a98d84b700a1e, checked the CVE numbers, thanks for adding documentation

Tree-SHA512: 3ee05351745193b8b959e4a25d50f25a693b2d24b0732ed53cf7d5882df40b5dd0f1877bd5c69cffb921d4a7acf9deb3cc1160b96dc730d9b5984151ad06b7c9

1 files changed, 55 insertions, 1 deletions

diff --git a/test/functional/data/invalid_txs.py b/test/functional/data/invalid_txs.py
index 454eb583f7..9dc06422c4 100644
--- a/test/functional/data/invalid_txs.py
+++ b/test/functional/data/invalid_txs.py
@@ -24,7 +24,24 @@ import abc
 from test_framework.messages import CTransaction, CTxIn, CTxOut, COutPoint
 from test_framework import script as sc
 from test_framework.blocktools import create_tx_with_script, MAX_BLOCK_SIGOPS
-
+from test_framework.script import (
+    CScript,
+    OP_CAT,
+    OP_SUBSTR,
+    OP_LEFT,
+    OP_RIGHT,
+    OP_INVERT,
+    OP_AND,
+    OP_OR,
+    OP_XOR,
+    OP_2MUL,
+    OP_2DIV,
+    OP_MUL,
+    OP_DIV,
+    OP_MOD,
+    OP_LSHIFT,
+    OP_RSHIFT
+)
 basic_p2sh = sc.CScript([sc.OP_HASH160, sc.hash160(sc.CScript([sc.OP_0])), sc.OP_EQUAL])
 
 
@@ -178,7 +195,44 @@ class TooManySigops(BadTxTemplate):
             script_pub_key=lotsa_checksigs,
             amount=1)
 
+def getDisabledOpcodeTemplate(opcode):
+    """ Creates disabled opcode tx template class"""
+    def get_tx(self):
+        tx = CTransaction()
+        vin = self.valid_txin
+        vin.scriptSig = CScript([opcode])
+        tx.vin.append(vin)
+        tx.vout.append(CTxOut(1, basic_p2sh))
+        tx.calc_sha256()
+        return tx
+
+    return type('DisabledOpcode_' + str(opcode), (BadTxTemplate,), {
+        'reject_reason': "disabled opcode",
+        'expect_disconnect': True,
+        'get_tx': get_tx,
+        'valid_in_block' : True
+        })
+
+# Disabled opcode tx templates (CVE-2010-5137)
+DisabledOpcodeTemplates = [getDisabledOpcodeTemplate(opcode) for opcode in [
+    OP_CAT,
+    OP_SUBSTR,
+    OP_LEFT,
+    OP_RIGHT,
+    OP_INVERT,
+    OP_AND,
+    OP_OR,
+    OP_XOR,
+    OP_2MUL,
+    OP_2DIV,
+    OP_MUL,
+    OP_DIV,
+    OP_MOD,
+    OP_LSHIFT,
+    OP_RSHIFT]]
+
 
 def iter_all_templates():
     """Iterate through all bad transaction template types."""
     return BadTxTemplate.__subclasses__()
+