[wallet] [rpc] Remove getlabeladdress RPC

labels are associated with addresses (rather than addresses being
associated with labels, as was the case with accounts). The
getlabeladdress does not make sense in this model, so remove it.

getaccountaddress is still supported for one release as the accounts
API is deprecated.

1 files changed, 34 insertions, 42 deletions

diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index 8cd3952837..c0992880cf 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -196,60 +196,43 @@ CTxDestination GetLabelDestination(CWallet* const pwallet, const std::string& la
     return dest;
 }
 
-static UniValue getlabeladdress(const JSONRPCRequest& request)
+static UniValue getaccountaddress(const JSONRPCRequest& request)
 {
     CWallet * const pwallet = GetWalletForJSONRPCRequest(request);
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
-    if (!IsDeprecatedRPCEnabled("accounts") && request.strMethod == "getaccountaddress") {
+    if (!IsDeprecatedRPCEnabled("accounts")) {
         if (request.fHelp) {
             throw std::runtime_error("getaccountaddress (Deprecated, will be removed in V0.18. To use this command, start bitcoind with -deprecatedrpc=accounts)");
         }
         throw JSONRPCError(RPC_METHOD_DEPRECATED, "getaccountaddress is deprecated and will be removed in V0.18. To use this command, start bitcoind with -deprecatedrpc=accounts.");
     }
 
-    if (request.fHelp || request.params.size() < 1 || request.params.size() > 2)
+    if (request.fHelp || request.params.size() != 1)
         throw std::runtime_error(
-            "getlabeladdress \"label\" ( force ) \n"
-            "\nReturns the default receiving address for this label. This will reset to a fresh address once there's a transaction that spends to it.\n"
+            "getaccountaddress \"account\"\n"
+            "\n\nDEPRECATED. Returns the current Bitcoin address for receiving payments to this account.\n"
             "\nArguments:\n"
-            "1. \"label\"         (string, required) The label for the address. It can also be set to the empty string \"\" to represent the default label.\n"
-            "2. \"force\"         (bool, optional) Whether the label should be created if it does not yet exist. If False, the RPC will return an error if called with a label that doesn't exist.\n"
-            "                                    Defaults to false (unless the getaccountaddress method alias is being called, in which case defaults to true for backwards compatibility).\n"
+            "1. \"account\"       (string, required) The account for the address. It can also be set to the empty string \"\" to represent the default account. The account does not need to exist, it will be created and a new address created  if there is no account by the given name.\n"
             "\nResult:\n"
-            "\"address\"          (string) The current receiving address for the label.\n"
+            "\"address\"          (string) The account bitcoin address\n"
             "\nExamples:\n"
-            + HelpExampleCli("getlabeladdress", "")
-            + HelpExampleCli("getlabeladdress", "\"\"")
-            + HelpExampleCli("getlabeladdress", "\"mylabel\"")
-            + HelpExampleRpc("getlabeladdress", "\"mylabel\"")
+            + HelpExampleCli("getaccountaddress", "")
+            + HelpExampleCli("getaccountaddress", "\"\"")
+            + HelpExampleCli("getaccountaddress", "\"myaccount\"")
+            + HelpExampleRpc("getaccountaddress", "\"myaccount\"")
         );
 
     LOCK2(cs_main, pwallet->cs_wallet);
 
-    // Parse the label first so we don't generate a key if there's an error
-    std::string label = LabelFromValue(request.params[0]);
-    bool force = request.strMethod == "getaccountaddress";
-    if (!request.params[1].isNull()) {
-        force = request.params[1].get_bool();
-    }
-
-    bool label_found = false;
-    for (const std::pair<CTxDestination, CAddressBookData>& item : pwallet->mapAddressBook) {
-        if (item.second.name == label) {
-            label_found = true;
-            break;
-        }
-    }
-    if (!force && !label_found) {
-        throw JSONRPCError(RPC_WALLET_INVALID_LABEL_NAME, std::string("No addresses with label " + label));
-    }
+    // Parse the account first so we don't generate a key if there's an error
+    std::string account = LabelFromValue(request.params[0]);
 
     UniValue ret(UniValue::VSTR);
 
-    ret = EncodeDestination(GetLabelDestination(pwallet, label));
+    ret = EncodeDestination(GetLabelDestination(pwallet, account));
     return ret;
 }
 
@@ -335,23 +318,33 @@ static UniValue setlabel(const JSONRPCRequest& request)
         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid Bitcoin address");
     }
 
+    std::string old_label = pwallet->mapAddressBook[dest].name;
     std::string label = LabelFromValue(request.params[1]);
 
     if (IsMine(*pwallet, dest)) {
-        // Detect when changing the label of an address that is the receiving address of another label:
-        // If so, delete the account record for it. Labels, unlike addresses, can be deleted,
-        // and if we wouldn't do this, the record would stick around forever.
-        if (pwallet->mapAddressBook.count(dest)) {
-            std::string old_label = pwallet->mapAddressBook[dest].name;
-            if (old_label != label && dest == GetLabelDestination(pwallet, old_label)) {
-                pwallet->DeleteLabel(old_label);
-            }
-        }
         pwallet->SetAddressBook(dest, label, "receive");
+        if (request.strMethod == "setaccount" && old_label != label && dest == GetLabelDestination(pwallet, old_label)) {
+            // for setaccount, call GetLabelDestination so a new receive address is created for the old account
+            GetLabelDestination(pwallet, old_label, true);
+        }
     } else {
         pwallet->SetAddressBook(dest, label, "send");
     }
 
+    // Detect when there are no addresses using this label.
+    // If so, delete the account record for it. Labels, unlike addresses, can be deleted,
+    // and if we wouldn't do this, the record would stick around forever.
+    bool found_address = false;
+    for (const std::pair<CTxDestination, CAddressBookData>& item : pwallet->mapAddressBook) {
+        if (item.second.name == label) {
+            found_address = true;
+            break;
+        }
+    }
+    if (!found_address) {
+        pwallet->DeleteLabel(old_label);
+    }
+
     return NullUniValue;
 }
 
@@ -4260,7 +4253,7 @@ static const CRPCCommand commands[] =
     { "wallet",             "sethdseed",                        &sethdseed,                     {"newkeypool","seed"} },
 
     /** Account functions (deprecated) */
-    { "wallet",             "getaccountaddress",                &getlabeladdress,               {"account"} },
+    { "wallet",             "getaccountaddress",                &getaccountaddress,             {"account"} },
     { "wallet",             "getaccount",                       &getaccount,                    {"address"} },
     { "wallet",             "getaddressesbyaccount",            &getaddressesbyaccount,         {"account"} },
     { "wallet",             "getreceivedbyaccount",             &getreceivedbylabel,            {"account","minconf"} },
@@ -4270,7 +4263,6 @@ static const CRPCCommand commands[] =
     { "wallet",             "move",                             &movecmd,                       {"fromaccount","toaccount","amount","minconf","comment"} },
 
     /** Label functions (to replace non-balance account functions) */
-    { "wallet",             "getlabeladdress",                  &getlabeladdress,               {"label","force"} },
     { "wallet",             "getaddressesbylabel",              &getaddressesbylabel,           {"label"} },
     { "wallet",             "getreceivedbylabel",               &getreceivedbylabel,            {"label","minconf"} },
     { "wallet",             "listlabels",                       &listlabels,                    {"purpose"} },