LCOV - code coverage report
Current view: top level - src/wallet - walletutil.h (source / functions) Hit Total Coverage
Test: fuzz_coverage.info Lines: 0 20 0.0 %
Date: 2023-10-05 12:38:51 Functions: 0 19 0.0 %
Branches: 0 28 0.0 %

           Branch data     Line data    Source code
       1                 :            : // Copyright (c) 2017-2021 The Bitcoin Core developers
       2                 :            : // Distributed under the MIT software license, see the accompanying
       3                 :            : // file COPYING or http://www.opensource.org/licenses/mit-license.php.
       4                 :            : 
       5                 :            : #ifndef BITCOIN_WALLET_WALLETUTIL_H
       6                 :            : #define BITCOIN_WALLET_WALLETUTIL_H
       7                 :            : 
       8                 :            : #include <script/descriptor.h>
       9                 :            : #include <util/fs.h>
      10                 :            : 
      11                 :            : #include <vector>
      12                 :            : 
      13                 :            : namespace wallet {
      14                 :            : /** (client) version numbers for particular wallet features */
      15                 :            : enum WalletFeature
      16                 :            : {
      17                 :            :     FEATURE_BASE = 10500, // the earliest version new wallets supports (only useful for getwalletinfo's clientversion output)
      18                 :            : 
      19                 :            :     FEATURE_WALLETCRYPT = 40000, // wallet encryption
      20                 :            :     FEATURE_COMPRPUBKEY = 60000, // compressed public keys
      21                 :            : 
      22                 :            :     FEATURE_HD = 130000, // Hierarchical key derivation after BIP32 (HD Wallet)
      23                 :            : 
      24                 :            :     FEATURE_HD_SPLIT = 139900, // Wallet with HD chain split (change outputs will use m/0'/1'/k)
      25                 :            : 
      26                 :            :     FEATURE_NO_DEFAULT_KEY = 159900, // Wallet without a default key written
      27                 :            : 
      28                 :            :     FEATURE_PRE_SPLIT_KEYPOOL = 169900, // Upgraded to HD SPLIT and can have a pre-split keypool
      29                 :            : 
      30                 :            :     FEATURE_LATEST = FEATURE_PRE_SPLIT_KEYPOOL
      31                 :            : };
      32                 :            : 
      33                 :            : bool IsFeatureSupported(int wallet_version, int feature_version);
      34                 :            : WalletFeature GetClosestWalletFeature(int version);
      35                 :            : 
      36                 :            : enum WalletFlags : uint64_t {
      37                 :            :     // wallet flags in the upper section (> 1 << 31) will lead to not opening the wallet if flag is unknown
      38                 :            :     // unknown wallet flags in the lower section <= (1 << 31) will be tolerated
      39                 :            : 
      40                 :            :     // will categorize coins as clean (not reused) and dirty (reused), and handle
      41                 :            :     // them with privacy considerations in mind
      42                 :            :     WALLET_FLAG_AVOID_REUSE = (1ULL << 0),
      43                 :            : 
      44                 :            :     // Indicates that the metadata has already been upgraded to contain key origins
      45                 :            :     WALLET_FLAG_KEY_ORIGIN_METADATA = (1ULL << 1),
      46                 :            : 
      47                 :            :     // Indicates that the descriptor cache has been upgraded to cache last hardened xpubs
      48                 :            :     WALLET_FLAG_LAST_HARDENED_XPUB_CACHED = (1ULL << 2),
      49                 :            : 
      50                 :            :     // will enforce the rule that the wallet can't contain any private keys (only watch-only/pubkeys)
      51                 :            :     WALLET_FLAG_DISABLE_PRIVATE_KEYS = (1ULL << 32),
      52                 :            : 
      53                 :            :     //! Flag set when a wallet contains no HD seed and no private keys, scripts,
      54                 :            :     //! addresses, and other watch only things, and is therefore "blank."
      55                 :            :     //!
      56                 :            :     //! The main function this flag serves is to distinguish a blank wallet from
      57                 :            :     //! a newly created wallet when the wallet database is loaded, to avoid
      58                 :            :     //! initialization that should only happen on first run.
      59                 :            :     //!
      60                 :            :     //! A secondary function of this flag, which applies to descriptor wallets
      61                 :            :     //! only, is to serve as an ongoing indication that descriptors in the
      62                 :            :     //! wallet should be created manually, and that the wallet should not
      63                 :            :     //! generate automatically generate new descriptors if it is later
      64                 :            :     //! encrypted. To support this behavior, descriptor wallets unlike legacy
      65                 :            :     //! wallets do not automatically unset the BLANK flag when things are
      66                 :            :     //! imported.
      67                 :            :     //!
      68                 :            :     //! This flag is also a mandatory flag to prevent previous versions of
      69                 :            :     //! bitcoin from opening the wallet, thinking it was newly created, and
      70                 :            :     //! then improperly reinitializing it.
      71                 :            :     WALLET_FLAG_BLANK_WALLET = (1ULL << 33),
      72                 :            : 
      73                 :            :     //! Indicate that this wallet supports DescriptorScriptPubKeyMan
      74                 :            :     WALLET_FLAG_DESCRIPTORS = (1ULL << 34),
      75                 :            : 
      76                 :            :     //! Indicates that the wallet needs an external signer
      77                 :            :     WALLET_FLAG_EXTERNAL_SIGNER = (1ULL << 35),
      78                 :            : };
      79                 :            : 
      80                 :            : //! Get the path of the wallet directory.
      81                 :            : fs::path GetWalletDir();
      82                 :            : 
      83                 :            : /** Descriptor with some wallet metadata */
      84                 :          0 : class WalletDescriptor
      85                 :            : {
      86                 :            : public:
      87                 :            :     std::shared_ptr<Descriptor> descriptor;
      88                 :          0 :     uint64_t creation_time = 0;
      89                 :          0 :     int32_t range_start = 0; // First item in range; start of range, inclusive, i.e. [range_start, range_end). This never changes.
      90                 :          0 :     int32_t range_end = 0; // Item after the last; end of range, exclusive, i.e. [range_start, range_end). This will increment with each TopUp()
      91                 :          0 :     int32_t next_index = 0; // Position of the next item to generate
      92                 :            :     DescriptorCache cache;
      93                 :            : 
      94                 :          0 :     void DeserializeDescriptor(const std::string& str)
      95                 :            :     {
      96                 :          0 :         std::string error;
      97                 :          0 :         FlatSigningProvider keys;
      98   [ #  #  #  # ]:          0 :         descriptor = Parse(str, keys, error, true);
      99   [ #  #  #  # ]:          0 :         if (!descriptor) {
     100   [ #  #  #  #  :          0 :             throw std::ios_base::failure("Invalid descriptor: " + error);
             #  #  #  # ]
     101                 :            :         }
     102                 :          0 :     }
     103                 :            : 
     104                 :          0 :     SERIALIZE_METHODS(WalletDescriptor, obj)
     105                 :            :     {
     106                 :          0 :         std::string descriptor_str;
     107   [ #  #  #  # ]:          0 :         SER_WRITE(obj, descriptor_str = obj.descriptor->ToString());
     108   [ #  #  #  # ]:          0 :         READWRITE(descriptor_str, obj.creation_time, obj.next_index, obj.range_start, obj.range_end);
     109   [ #  #  #  # ]:          0 :         SER_READ(obj, obj.DeserializeDescriptor(descriptor_str));
     110                 :          0 :     }
     111                 :            : 
     112                 :          0 :     WalletDescriptor() {}
     113                 :          0 :     WalletDescriptor(std::shared_ptr<Descriptor> descriptor, uint64_t creation_time, int32_t range_start, int32_t range_end, int32_t next_index) : descriptor(descriptor), creation_time(creation_time), range_start(range_start), range_end(range_end), next_index(next_index) {}
     114                 :            : };
     115                 :            : } // namespace wallet
     116                 :            : 
     117                 :            : #endif // BITCOIN_WALLET_WALLETUTIL_H

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