Autogeneration support for witness in script_tests

sipa · sipa · commit 1b904a57d280 · 2016-04-12T23:27:48.000+02:00
diff --git a/src/test/data/script_tests.json b/src/test/data/script_tests.json
@@ -1825,6 +1825,94 @@
     "OK",
     "P2SH with CLEANSTACK"
 ],
+[
+    [
+        "3044022039105b995a5f448639a997a5c90fda06f50b49df30c3bdb6663217bf79323db002206fecd54269dec569fcc517178880eb58bb40f381a282bb75766ff3637d5f4b4301",
+        "410479be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8ac"
+    ],
+    "",
+    "0 0x20 0xb95237b48faaa69eb078e1170be3b5cbb3fddf16d0a991e14ad274f7b33a4f64",
+    "P2SH,WITNESS",
+    "OK",
+    "Basic P2WSH"
+],
+[
+    [
+        "304402201a96950593cb0af32d080b0f193517f4559241a8ebd1e95e414533ad64a3f423022047f4f6d3095c23235bdff3aeff480d0529c027a3f093cb265b7cbf148553b85101",
+        "0479be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8"
+    ],
+    "",
+    "0 0x14 0x91b24bf9f5288532960ac687abb035127b1d28a5",
+    "P2SH,WITNESS",
+    "OK",
+    "Basic P2WPKH"
+],
+[
+    [
+        "3044022061fc1a144e221ec77a58a4281936eb6a1b715b9349e446e74d106ec26c8633ba022008064a0d112e8ad514440fcdfaa1006e48305d6844f50a65873fb4b2cf9c035f01",
+        "410479be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8ac"
+    ],
+    "0x22 0x0020b95237b48faaa69eb078e1170be3b5cbb3fddf16d0a991e14ad274f7b33a4f64",
+    "HASH160 0x14 0xf386c2ba255cc56d20cfa6ea8b062f8b59945518 EQUAL",
+    "P2SH,WITNESS",
+    "OK",
+    "Basic P2SH(P2WSH)"
+],
+[
+    [
+        "3044022014e69768e174972f21d32d93002ca6fc26133cb9e819ceef7efb970798bde7b4022078b86849dbbec692ec9355aa2a763fce7ea11bf72fdd8ea5ea8083de6f8a77fe01",
+        "0479be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8"
+    ],
+    "0x16 0x001491b24bf9f5288532960ac687abb035127b1d28a5",
+    "HASH160 0x14 0x17743beb429c55c942d2ec703b98c4d57c2df5c6 EQUAL",
+    "P2SH,WITNESS",
+    "OK",
+    "Basic P2SH(P2WPKH)"
+],
+[
+    [
+        "304402202589f0512cb2408fb08ed9bd24f85eb3059744d9e4f2262d0b7f1338cff6e8b902206c0978f449693e0578c71bc543b11079fd0baae700ee5e9a6bee94db490af9fc01",
+        "41048282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f5150811f8a8098557dfe45e8256e830b60ace62d613ac2f7b17bed31b6eaff6e26cafac"
+    ],
+    "",
+    "0 0x20 0xac8ebd9e52c17619a381fa4f71aebb696087c6ef17c960fd0587addad99c0610",
+    "P2SH,WITNESS",
+    "EVAL_FALSE",
+    "Basic P2WSH with the wrong key"
+],
+[
+    [
+        "304402206ef7fdb2986325d37c6eb1a8bb24aeb46dede112ed8fc76c7d7500b9b83c0d3d02201edc2322c794fe2d6b0bd73ed319e714aa9b86d8891961530d5c9b7156b60d4e01",
+        "048282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f5150811f8a8098557dfe45e8256e830b60ace62d613ac2f7b17bed31b6eaff6e26caf"
+    ],
+    "",
+    "0 0x14 0x7cf9c846cd4882efec4bf07e44ebdad495c94f4b",
+    "P2SH,WITNESS",
+    "EVAL_FALSE",
+    "Basic P2WPKH with the wrong key"
+],
+[
+    [
+        "30440220069ea3581afaf8187f63feee1fd2bd1f9c0dc71ea7d6e8a8b07ee2ebcf824bf402201a4fdef4c532eae59223be1eda6a397fc835142d4ddc6c74f4aa85b766a5c16f01",
+        "41048282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f5150811f8a8098557dfe45e8256e830b60ace62d613ac2f7b17bed31b6eaff6e26cafac"
+    ],
+    "0x22 0x0020ac8ebd9e52c17619a381fa4f71aebb696087c6ef17c960fd0587addad99c0610",
+    "HASH160 0x14 0x61039a003883787c0d6ebc66d97fdabe8e31449d EQUAL",
+    "P2SH,WITNESS",
+    "EVAL_FALSE",
+    "Basic P2SH(P2WSH) with the wrong key"
+],
+[
+    [
+        "304402204209e49457c2358f80d0256bc24535b8754c14d08840fc4be762d6f5a0aed80b02202eaf7d8fc8d62f60c67adcd99295528d0e491ae93c195cec5a67e7a09532a88001",
+        "048282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f5150811f8a8098557dfe45e8256e830b60ace62d613ac2f7b17bed31b6eaff6e26caf"
+    ],
+    "0x16 0x00147cf9c846cd4882efec4bf07e44ebdad495c94f4b",
+    "HASH160 0x14 0x4e0c2aed91315303fc6a1dc4c7bc21c88f75402e EQUAL",
+    "P2SH,WITNESS",
+    "EVAL_FALSE",
+    "Basic P2SH(P2WPKH) with the wrong key"
+],
 
 ["The End"]
 ]
diff --git a/src/test/script_tests.cpp b/src/test/script_tests.cpp
@@ -253,11 +253,22 @@ struct KeyData
     }
 };
 
+enum WitnessMode {
+    WITNESS_NONE,
+    WITNESS_PKH,
+    WITNESS_SH
+};
 
 class TestBuilder
 {
 private:
-    CScript scriptPubKey;
+    //! Actually executed script
+    CScript script;
+    //! The P2SH redeemscript
+    CScript redeemscript;
+    //! The Witness embedded script
+    CScript witscript;
+    CScriptWitness scriptWitness;
     CTransaction creditTx;
     CMutableTransaction spendTx;
     bool havePush;
@@ -282,13 +293,25 @@ class TestBuilder
     }
 
 public:
-    TestBuilder(const CScript& redeemScript, const std::string& comment_, int flags_, bool P2SH = false) : scriptPubKey(redeemScript), havePush(false), comment(comment_), flags(flags_), scriptError(SCRIPT_ERR_OK)
+    TestBuilder(const CScript& script_, const std::string& comment_, int flags_, bool P2SH = false, WitnessMode wm = WITNESS_NONE) : script(script_), havePush(false), comment(comment_), flags(flags_), scriptError(SCRIPT_ERR_OK)
     {
+        CScript scriptPubKey = script;
+        if (wm == WITNESS_PKH) {
+            uint160 hash;
+            CHash160().Write(&script[1], script.size() - 1).Finalize(hash.begin());
+            script = CScript() << OP_DUP << OP_HASH160 << ToByteVector(hash) << OP_EQUALVERIFY << OP_CHECKSIG;
+            scriptPubKey = CScript() << OP_0 << ToByteVector(hash);
+        } else if (wm == WITNESS_SH) {
+            witscript = scriptPubKey;
+            uint256 hash;
+            CSHA256().Write(&witscript[0], witscript.size()).Finalize(hash.begin());
+            scriptPubKey = CScript() << OP_0 << ToByteVector(hash);
+        }
         if (P2SH) {
-            creditTx = BuildCreditingTransaction(CScript() << OP_HASH160 << ToByteVector(CScriptID(redeemScript)) << OP_EQUAL);
-        } else {
-            creditTx = BuildCreditingTransaction(redeemScript);
+            redeemscript = scriptPubKey;
+            scriptPubKey = CScript() << OP_HASH160 << ToByteVector(CScriptID(redeemscript)) << OP_EQUAL;
         }
+        creditTx = BuildCreditingTransaction(scriptPubKey);
         spendTx = BuildSpendingTransaction(CScript(), CScriptWitness(), creditTx);
     }
 
@@ -318,9 +341,9 @@ class TestBuilder
         return *this;
     }
 
-    TestBuilder& PushSig(const CKey& key, int nHashType = SIGHASH_ALL, unsigned int lenR = 32, unsigned int lenS = 32)
+    TestBuilder& PushSig(const CKey& key, int nHashType = SIGHASH_ALL, unsigned int lenR = 32, unsigned int lenS = 32, int sigversion = 0)
     {
-        uint256 hash = SignatureHash(scriptPubKey, spendTx, 0, nHashType, 0, 0);
+        uint256 hash = SignatureHash(script, spendTx, 0, nHashType, 0, sigversion);
         std::vector<unsigned char> vchSig, r, s;
         uint32_t iter = 0;
         do {
@@ -336,6 +359,11 @@ class TestBuilder
         return *this;
     }
 
+    TestBuilder& PushWitSig(const CKey& key, int nHashType = SIGHASH_ALL, unsigned int lenR = 32, unsigned int lenS = 32, int sigversion = 1)
+    {
+        return PushSig(key, nHashType, lenR, lenS, sigversion).AsWit();
+    }
+
     TestBuilder& Push(const CPubKey& pubkey)
     {
         DoPush(std::vector<unsigned char>(pubkey.begin(), pubkey.end()));
@@ -344,10 +372,16 @@ class TestBuilder
 
     TestBuilder& PushRedeem()
     {
-        DoPush(std::vector<unsigned char>(scriptPubKey.begin(), scriptPubKey.end()));
+        DoPush(std::vector<unsigned char>(redeemscript.begin(), redeemscript.end()));
         return *this;
     }
 
+    TestBuilder& PushWitRedeem()
+    {
+        DoPush(std::vector<unsigned char>(witscript.begin(), witscript.end()));
+        return AsWit();
+    }
+
     TestBuilder& EditPush(unsigned int pos, const std::string& hexin, const std::string& hexout)
     {
         assert(havePush);
@@ -372,15 +406,30 @@ class TestBuilder
     {
         TestBuilder copy = *this; // Make a copy so we can rollback the push.
         DoPush();
-        DoTest(creditTx.vout[0].scriptPubKey, spendTx.vin[0].scriptSig, CScriptWitness(), flags, comment, scriptError);
+        DoTest(creditTx.vout[0].scriptPubKey, spendTx.vin[0].scriptSig, scriptWitness, flags, comment, scriptError);
         *this = copy;
         return *this;
     }
 
+    TestBuilder& AsWit()
+    {
+        assert(havePush);
+        scriptWitness.stack.push_back(push);
+        havePush = false;
+        return *this;
+    }
+
     UniValue GetJSON()
     {
         DoPush();
         UniValue array(UniValue::VARR);
+        if (!scriptWitness.stack.empty()) {
+            UniValue wit(UniValue::VARR);
+            for (unsigned i = 0; i < scriptWitness.stack.size(); i++) {
+                wit.push_back(HexStr(scriptWitness.stack[i]));
+            }
+            array.push_back(wit);
+        }
         array.push_back(FormatScript(spendTx.vin[0].scriptSig));
         array.push_back(FormatScript(creditTx.vout[0].scriptPubKey));
         array.push_back(FormatScriptFlags(flags));
@@ -676,6 +725,30 @@ BOOST_AUTO_TEST_CASE(script_build)
                                 "P2SH with CLEANSTACK", SCRIPT_VERIFY_CLEANSTACK | SCRIPT_VERIFY_P2SH, true
                                ).PushSig(keys.key0).PushRedeem());
 
+    tests.push_back(TestBuilder(CScript() << ToByteVector(keys.pubkey0) << OP_CHECKSIG,
+                                "Basic P2WSH", SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH, false, WITNESS_SH
+                               ).PushWitSig(keys.key0).PushWitRedeem());
+    tests.push_back(TestBuilder(CScript() << ToByteVector(keys.pubkey0),
+                                "Basic P2WPKH", SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH, false, WITNESS_PKH
+                               ).PushWitSig(keys.key0).Push(keys.pubkey0).AsWit());
+    tests.push_back(TestBuilder(CScript() << ToByteVector(keys.pubkey0) << OP_CHECKSIG,
+                                "Basic P2SH(P2WSH)", SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH, true, WITNESS_SH
+                               ).PushWitSig(keys.key0).PushWitRedeem().PushRedeem());
+    tests.push_back(TestBuilder(CScript() << ToByteVector(keys.pubkey0),
+                                "Basic P2SH(P2WPKH)", SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH, true, WITNESS_PKH
+                               ).PushWitSig(keys.key0).Push(keys.pubkey0).AsWit().PushRedeem());
+    tests.push_back(TestBuilder(CScript() << ToByteVector(keys.pubkey1) << OP_CHECKSIG,
+                                "Basic P2WSH with the wrong key", SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH, false, WITNESS_SH
+                               ).PushWitSig(keys.key0).PushWitRedeem().ScriptError(SCRIPT_ERR_EVAL_FALSE));
+    tests.push_back(TestBuilder(CScript() << ToByteVector(keys.pubkey1),
+                                "Basic P2WPKH with the wrong key", SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH, false, WITNESS_PKH
+                               ).PushWitSig(keys.key0).Push(keys.pubkey1).AsWit().ScriptError(SCRIPT_ERR_EVAL_FALSE));
+    tests.push_back(TestBuilder(CScript() << ToByteVector(keys.pubkey1) << OP_CHECKSIG,
+                                "Basic P2SH(P2WSH) with the wrong key", SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH, true, WITNESS_SH
+                               ).PushWitSig(keys.key0).PushWitRedeem().PushRedeem().ScriptError(SCRIPT_ERR_EVAL_FALSE));
+    tests.push_back(TestBuilder(CScript() << ToByteVector(keys.pubkey1),
+                                "Basic P2SH(P2WPKH) with the wrong key", SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH, true, WITNESS_PKH
+                               ).PushWitSig(keys.key0).Push(keys.pubkey1).AsWit().PushRedeem().ScriptError(SCRIPT_ERR_EVAL_FALSE));
 
     std::set<std::string> tests_set;
 
