Wallet: Split main logic from InitLoadWallet into CreateWalletFromFile

Author: luke-jr

src/wallet/wallet.cpp

@@ -3374,16 +3374,8 @@ std::string CWallet::GetWalletHelpString(bool showDebug)
     return strUsage;
 }
 
-bool CWallet::InitLoadWallet()
+CWallet* CWallet::CreateWalletFromFile(const std::string walletFile)
 {
-    if (GetBoolArg("-disablewallet", DEFAULT_DISABLE_WALLET)) {
-        pwalletMain = NULL;
-        LogPrintf("Wallet disabled!\n");
-        return true;
-    }
-
-    std::string walletFile = GetArg("-wallet", DEFAULT_WALLET_DAT);
-
     // needed to restore wallet transaction meta data after -zapwallettxes
     std::vector<CWalletTx> vWtx;
 
@@ -3393,7 +3385,8 @@ bool CWallet::InitLoadWallet()
         CWallet *tempWallet = new CWallet(walletFile);
         DBErrors nZapWalletRet = tempWallet->ZapWalletTx(vWtx);
         if (nZapWalletRet != DB_LOAD_OK) {
-            return InitError(strprintf(_("Error loading %s: Wallet corrupted"), walletFile));
+            InitError(strprintf(_("Error loading %s: Wallet corrupted"), walletFile));
+            return NULL;
         }
 
         delete tempWallet;
@@ -3408,23 +3401,29 @@ bool CWallet::InitLoadWallet()
     DBErrors nLoadWalletRet = walletInstance->LoadWallet(fFirstRun);
     if (nLoadWalletRet != DB_LOAD_OK)
     {
-        if (nLoadWalletRet == DB_CORRUPT)
-            return InitError(strprintf(_("Error loading %s: Wallet corrupted"), walletFile));
+        if (nLoadWalletRet == DB_CORRUPT) {
+            InitError(strprintf(_("Error loading %s: Wallet corrupted"), walletFile));
+            return NULL;
+        }
         else if (nLoadWalletRet == DB_NONCRITICAL_ERROR)
         {
             InitWarning(strprintf(_("Error reading %s! All keys read correctly, but transaction data"
                                          " or address book entries might be missing or incorrect."),
                 walletFile));
         }
-        else if (nLoadWalletRet == DB_TOO_NEW)
-            return InitError(strprintf(_("Error loading %s: Wallet requires newer version of %s"),
-                               walletFile, _(PACKAGE_NAME)));
+        else if (nLoadWalletRet == DB_TOO_NEW) {
+            InitError(strprintf(_("Error loading %s: Wallet requires newer version of %s"), walletFile, _(PACKAGE_NAME)));
+            return NULL;
+        }
         else if (nLoadWalletRet == DB_NEED_REWRITE)
         {
-            return InitError(strprintf(_("Wallet needed to be rewritten: restart %s to complete"), _(PACKAGE_NAME)));
+            InitError(strprintf(_("Wallet needed to be rewritten: restart %s to complete"), _(PACKAGE_NAME)));
+            return NULL;
+        }
+        else {
+            InitError(strprintf(_("Error loading %s"), walletFile));
+            return NULL;
         }
-        else
-            return InitError(strprintf(_("Error loading %s"), walletFile));
     }
 
     if (GetBoolArg("-upgradewallet", fFirstRun))
@@ -3440,7 +3439,8 @@ bool CWallet::InitLoadWallet()
             LogPrintf("Allowing wallet upgrade up to %i\n", nMaxVersion);
         if (nMaxVersion < walletInstance->GetVersion())
         {
-            return InitError(_("Cannot downgrade wallet"));
+            InitError(_("Cannot downgrade wallet"));
+            return NULL;
         }
         walletInstance->SetMaxVersion(nMaxVersion);
     }
@@ -3457,18 +3457,24 @@ bool CWallet::InitLoadWallet()
         CPubKey newDefaultKey;
         if (walletInstance->GetKeyFromPool(newDefaultKey)) {
             walletInstance->SetDefaultKey(newDefaultKey);
-            if (!walletInstance->SetAddressBook(walletInstance->vchDefaultKey.GetID(), "", "receive"))
-                return InitError(_("Cannot write default address") += "\n");
+            if (!walletInstance->SetAddressBook(walletInstance->vchDefaultKey.GetID(), "", "receive")) {
+                InitError(_("Cannot write default address") += "\n");
+                return NULL;
+            }
         }
 
         walletInstance->SetBestChain(chainActive.GetLocator());
     }
     else if (mapArgs.count("-usehd")) {
         bool useHD = GetBoolArg("-usehd", DEFAULT_USE_HD_WALLET);
-        if (walletInstance->IsHDEnabled() && !useHD)
-            return InitError(strprintf(_("Error loading %s: You can't disable HD on a already existing HD wallet"), walletFile));
-        if (!walletInstance->IsHDEnabled() && useHD)
-            return InitError(strprintf(_("Error loading %s: You can't enable HD on a already existing non-HD wallet"), walletFile));
+        if (walletInstance->IsHDEnabled() && !useHD) {
+            InitError(strprintf(_("Error loading %s: You can't disable HD on a already existing HD wallet"), walletFile));
+            return NULL;
+        }
+        if (!walletInstance->IsHDEnabled() && useHD) {
+            InitError(strprintf(_("Error loading %s: You can't enable HD on a already existing non-HD wallet"), walletFile));
+            return NULL;
+        }
     }
 
     LogPrintf(" wallet      %15dms\n", GetTimeMillis() - nStart);
@@ -3498,8 +3504,10 @@ bool CWallet::InitLoadWallet()
             while (block && block->pprev && (block->pprev->nStatus & BLOCK_HAVE_DATA) && block->pprev->nTx > 0 && pindexRescan != block)
                 block = block->pprev;
 
-            if (pindexRescan != block)
-                return InitError(_("Prune: last wallet synchronisation goes beyond pruned data. You need to -reindex (download the whole blockchain again in case of pruned node)"));
+            if (pindexRescan != block) {
+                InitError(_("Prune: last wallet synchronisation goes beyond pruned data. You need to -reindex (download the whole blockchain again in case of pruned node)"));
+                return NULL;
+            }
         }
 
         uiInterface.InitMessage(_("Rescanning..."));
@@ -3544,7 +3552,24 @@ bool CWallet::InitLoadWallet()
         LogPrintf("mapAddressBook.size() = %u\n",  walletInstance->mapAddressBook.size());
     }
 
-    pwalletMain = walletInstance;
+    return walletInstance;
+}
+
+bool CWallet::InitLoadWallet()
+{
+    if (GetBoolArg("-disablewallet", DEFAULT_DISABLE_WALLET)) {
+        pwalletMain = NULL;
+        LogPrintf("Wallet disabled!\n");
+        return true;
+    }
+
+    std::string walletFile = GetArg("-wallet", DEFAULT_WALLET_DAT);
+
+    CWallet * const pwallet = CreateWalletFromFile(walletFile);
+    if (!pwallet) {
+        return false;
+    }
+    pwalletMain = pwallet;
 
     return true;
 }

src/wallet/wallet.h

@@ -917,6 +917,7 @@ class CWallet : public CCryptoKeyStore, public CValidationInterface
     static std::string GetWalletHelpString(bool showDebug);
 
     /* Initializes the wallet, returns a new CWallet instance or a null pointer in case of an error */
+    static CWallet* CreateWalletFromFile(const std::string walletFile);
     static bool InitLoadWallet();
 
     /**