[wallet] loadwallet shouldn't create new wallets.

A bug in the initial implementation of loadwallet meant that if the
arguement was a directory that didn't contain a wallet.dat file, a new
wallet would be created in that directory. Fix that so that if a
directory is passed in, it must contain a wallet.dat file.

Bug reported by promag (João Barbosa).

1 files changed, 6 insertions, 0 deletions

diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index bc381d3cda..9576d1a79f 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -3092,6 +3092,12 @@ static UniValue loadwallet(const JSONRPCRequest& request)
     fs::path wallet_path = fs::absolute(wallet_file, GetWalletDir());
     if (fs::symlink_status(wallet_path).type() == fs::file_not_found) {
         throw JSONRPCError(RPC_WALLET_NOT_FOUND, "Wallet " + wallet_file + " not found.");
+    } else if (fs::is_directory(wallet_path)) {
+        // The given filename is a directory. Check that there's a wallet.dat file.
+        fs::path wallet_dat_file = wallet_path / "wallet.dat";
+        if (fs::symlink_status(wallet_dat_file).type() == fs::file_not_found) {
+            throw JSONRPCError(RPC_WALLET_NOT_FOUND, "Directory " + wallet_file + " does not contain a wallet.dat file.");
+        }
     }
 
     std::string warning;