Merge #9682: Require timestamps for importmulti keys

266a811 Use MTP for importmulti "now" timestamps (Russell Yanofsky)
3cf9917 Add test to check new importmulti "now" value (Russell Yanofsky)
442887f Require timestamps for importmulti keys (Russell Yanofsky)

2 files changed, 40 insertions, 10 deletions

diff --git a/src/rpc/misc.cpp b/src/rpc/misc.cpp
index 480c45516c..25fad3c2e3 100644
--- a/src/rpc/misc.cpp
+++ b/src/rpc/misc.cpp
@@ -167,6 +167,7 @@ UniValue validateaddress(const JSONRPCRequest& request)
             "  \"pubkey\" : \"publickeyhex\",    (string) The hex value of the raw public key\n"
             "  \"iscompressed\" : true|false,  (boolean) If the address is compressed\n"
             "  \"account\" : \"account\"         (string) DEPRECATED. The account associated with the address, \"\" is the default account\n"
+            "  \"timestamp\" : timestamp,        (number, optional) The creation time of the key if available in seconds since epoch (Jan 1 1970 GMT)\n"
             "  \"hdkeypath\" : \"keypath\"       (string, optional) The HD keypath if the key is HD and available\n"
             "  \"hdmasterkeyid\" : \"<hash160>\" (string, optional) The Hash160 of the HD master pubkey\n"
             "}\n"
@@ -204,10 +205,16 @@ UniValue validateaddress(const JSONRPCRequest& request)
         if (pwalletMain && pwalletMain->mapAddressBook.count(dest))
             ret.push_back(Pair("account", pwalletMain->mapAddressBook[dest].name));
         CKeyID keyID;
-        if (pwalletMain && address.GetKeyID(keyID) && pwalletMain->mapKeyMetadata.count(keyID) && !pwalletMain->mapKeyMetadata[keyID].hdKeypath.empty())
-        {
-            ret.push_back(Pair("hdkeypath", pwalletMain->mapKeyMetadata[keyID].hdKeypath));
-            ret.push_back(Pair("hdmasterkeyid", pwalletMain->mapKeyMetadata[keyID].hdMasterKeyID.GetHex()));
+        if (pwalletMain) {
+            const auto& meta = pwalletMain->mapKeyMetadata;
+            auto it = address.GetKeyID(keyID) ? meta.find(keyID) : meta.end();
+            if (it != meta.end()) {
+                ret.push_back(Pair("timestamp", it->second.nCreateTime));
+                if (!it->second.hdKeypath.empty()) {
+                    ret.push_back(Pair("hdkeypath", it->second.hdKeypath));
+                    ret.push_back(Pair("hdmasterkeyid", it->second.hdMasterKeyID.GetHex()));
+                }
+            }
         }
 #endif
     }
diff --git a/src/wallet/rpcdump.cpp b/src/wallet/rpcdump.cpp
index 7d4ed70ed9..9310a320c7 100644
--- a/src/wallet/rpcdump.cpp
+++ b/src/wallet/rpcdump.cpp
@@ -640,7 +640,8 @@ UniValue dumpwallet(const JSONRPCRequest& request)
 }
 
 
-UniValue processImport(const UniValue& data) {
+UniValue ProcessImport(const UniValue& data, const int64_t timestamp)
+{
     try {
         bool success = false;
 
@@ -659,7 +660,6 @@ UniValue processImport(const UniValue& data) {
         const bool& internal = data.exists("internal") ? data["internal"].get_bool() : false;
         const bool& watchOnly = data.exists("watchonly") ? data["watchonly"].get_bool() : false;
         const string& label = data.exists("label") && !internal ? data["label"].get_str() : "";
-        const int64_t& timestamp = data.exists("timestamp") && data["timestamp"].get_int64() > 1 ? data["timestamp"].get_int64() : 1;
 
         bool isScript = scriptPubKey.getType() == UniValue::VSTR;
         bool isP2SH = strRedeemScript.length() > 0;
@@ -958,6 +958,20 @@ UniValue processImport(const UniValue& data) {
     }
 }
 
+int64_t GetImportTimestamp(const UniValue& data, int64_t now)
+{
+    if (data.exists("timestamp")) {
+        const UniValue& timestamp = data["timestamp"];
+        if (timestamp.isNum()) {
+            return timestamp.get_int64();
+        } else if (timestamp.isStr() && timestamp.get_str() == "now") {
+            return now;
+        }
+        throw JSONRPCError(RPC_TYPE_ERROR, strprintf("Expected number or \"now\" timestamp value for key. got type %s", uvTypeName(timestamp.type())));
+    }
+    throw JSONRPCError(RPC_TYPE_ERROR, "Missing required timestamp field for key");
+}
+
 UniValue importmulti(const JSONRPCRequest& mainRequest)
 {
     // clang-format off
@@ -970,13 +984,17 @@ UniValue importmulti(const JSONRPCRequest& mainRequest)
             "  [     (array of json objects)\n"
             "    {\n"
             "      \"scriptPubKey\": \"<script>\" | { \"address\":\"<address>\" }, (string / json, required) Type of scriptPubKey (string for script, json for address)\n"
+            "      \"timestamp\": timestamp | \"now\"                        , (integer / string, required) Creation time of the key in seconds since epoch (Jan 1 1970 GMT),\n"
+            "                                                              or the string \"now\" to substitute the current synced blockchain time. The timestamp of the oldest\n"
+            "                                                              key will determine how far back blockchain rescans need to begin for missing wallet transactions.\n"
+            "                                                              \"now\" can be specified to bypass scanning, for keys which are known to never have been used, and\n"
+            "                                                              0 can be specified to scan the entire blockchain.\n"
             "      \"redeemscript\": \"<script>\"                            , (string, optional) Allowed only if the scriptPubKey is a P2SH address or a P2SH scriptPubKey\n"
             "      \"pubkeys\": [\"<pubKey>\", ... ]                         , (array, optional) Array of strings giving pubkeys that must occur in the output or redeemscript\n"
             "      \"keys\": [\"<key>\", ... ]                               , (array, optional) Array of strings giving private keys whose corresponding public keys must occur in the output or redeemscript\n"
             "      \"internal\": <true>                                    , (boolean, optional, default: false) Stating whether matching outputs should be be treated as not incoming payments\n"
             "      \"watchonly\": <true>                                   , (boolean, optional, default: false) Stating whether matching outputs should be considered watched even when they're not spendable, only allowed if keys are empty\n"
             "      \"label\": <label>                                      , (string, optional, default: '') Label to assign to the address (aka account name, for now), only allowed with internal=false\n"
-            "      \"timestamp\": 1454686740,                                (integer, optional, default now) Timestamp\n"
             "    }\n"
             "  ,...\n"
             "  ]\n"
@@ -1015,6 +1033,12 @@ UniValue importmulti(const JSONRPCRequest& mainRequest)
     LOCK2(cs_main, pwalletMain->cs_wallet);
     EnsureWalletIsUnlocked();
 
+    // Verify all timestamps are present before importing any keys.
+    const int64_t now = chainActive.Tip() ? chainActive.Tip()->GetMedianTimePast() : 0;
+    for (const UniValue& data : requests.getValues()) {
+        GetImportTimestamp(data, now);
+    }
+
     bool fRunScan = false;
     const int64_t minimumTimestamp = 1;
     int64_t nLowestTimestamp = 0;
@@ -1028,7 +1052,8 @@ UniValue importmulti(const JSONRPCRequest& mainRequest)
     UniValue response(UniValue::VARR);
 
     BOOST_FOREACH (const UniValue& data, requests.getValues()) {
-        const UniValue result = processImport(data);
+        const int64_t timestamp = std::max(GetImportTimestamp(data, now), minimumTimestamp);
+        const UniValue result = ProcessImport(data, timestamp);
         response.push_back(result);
 
         if (!fRescan) {
@@ -1041,8 +1066,6 @@ UniValue importmulti(const JSONRPCRequest& mainRequest)
         }
 
         // Get the lowest timestamp.
-        const int64_t& timestamp = data.exists("timestamp") && data["timestamp"].get_int64() > minimumTimestamp ? data["timestamp"].get_int64() : minimumTimestamp;
-
         if (timestamp < nLowestTimestamp) {
             nLowestTimestamp = timestamp;
         }