monero_c/patches/wownero/0012-Add-recoverDeterministicWalletFromSpendKey.patch

From ad28016bf3cfd11242dc14472389f7a006c73dcf Mon Sep 17 00:00:00 2001
From: Konstantin Ullrich <konstantinullrich12@gmail.com>
Date: Wed, 11 Oct 2023 16:47:59 +0200
Subject: [PATCH 12/15] Add recoverDeterministicWalletFromSpendKey

This function is used by Cake Wallet to enable polyseed (dart implementation)
support.

Sourced from the following commit:
https://github.com/cake-tech/monero/commit/cb6fb5ab218878702ed151c0e3d5d68eb2732788

Co-authored-by: Godwin Asuquo <godilite@gmail.com>
---
 src/wallet/api/wallet.cpp         | 29 +++++++++++++++++++++++++++++
 src/wallet/api/wallet.h           |  4 ++++
 src/wallet/api/wallet2_api.h      | 19 +++++++++++++++++++
 src/wallet/api/wallet_manager.cpp | 16 ++++++++++++++++
 src/wallet/api/wallet_manager.h   |  7 +++++++
 5 files changed, 75 insertions(+)

diff --git a/src/wallet/api/wallet.cpp b/src/wallet/api/wallet.cpp
index e69910e69..e650e6044 100644
--- a/src/wallet/api/wallet.cpp
+++ b/src/wallet/api/wallet.cpp
@@ -824,6 +824,35 @@ bool WalletImpl::recover(const std::string &path, const std::string &password, c
     return status() == Status_Ok;
 }
 
+bool WalletImpl::recoverDeterministicWalletFromSpendKey(const std::string &path, const std::string &password, const std::string &language, const std::string &spendkey_string)
+{
+    clearStatus();
+    m_errorString.clear();
+
+    m_recoveringFromSeed = true;
+    m_recoveringFromDevice = false;
+
+    // parse spend key
+    crypto::secret_key spendkey;
+    if (!spendkey_string.empty()) {
+        cryptonote::blobdata spendkey_data;
+        if(!epee::string_tools::parse_hexstr_to_binbuff(spendkey_string, spendkey_data) || spendkey_data.size() != sizeof(crypto::secret_key))
+        {
+            setStatusError(tr("failed to parse secret spend key"));
+            return false;
+        }
+        spendkey = *reinterpret_cast<const crypto::secret_key*>(spendkey_data.data());
+    }
+
+    try {
+        m_wallet->generate(path, password, spendkey, true, false);
+        setSeedLanguage(language);
+    } catch (const std::exception &e) {
+        setStatusCritical(e.what());
+    }
+    return status() == Status_Ok;
+}
+
 bool WalletImpl::close(bool store)
 {
 
diff --git a/src/wallet/api/wallet.h b/src/wallet/api/wallet.h
index a82f270e4..9e1fbb40b 100644
--- a/src/wallet/api/wallet.h
+++ b/src/wallet/api/wallet.h
@@ -77,6 +77,10 @@ public:
                             const std::string &address_string, 
                             const std::string &viewkey_string,
                             const std::string &spendkey_string = "");
+    bool recoverDeterministicWalletFromSpendKey(const std::string &path,
+                                                    const std::string &password,
+                                                    const std::string &language,
+                                                    const std::string &spendkey_string);
     bool recoverFromDevice(const std::string &path,
                            const std::string &password,
                            const std::string &device_name);
diff --git a/src/wallet/api/wallet2_api.h b/src/wallet/api/wallet2_api.h
index f421fdc05..c8d6bb179 100644
--- a/src/wallet/api/wallet2_api.h
+++ b/src/wallet/api/wallet2_api.h
@@ -1323,6 +1323,25 @@ struct WalletManager
         return createWalletFromKeys(path, password, language, testnet ? TESTNET : MAINNET, restoreHeight, addressString, viewKeyString, spendKeyString);
     }
 
+    /*!
+     * \brief  recover deterministic wallet from spend key.
+     * \param  path           Name of wallet file to be created
+     * \param  password       Password of wallet file
+     * \param  language       language
+     * \param  nettype        Network type
+     * \param  restoreHeight  restore from start height
+     * \param  spendKeyString spend key
+     * \param  kdf_rounds     Number of rounds for key derivation function
+     * \return                Wallet instance (Wallet::status() needs to be called to check if recovered successfully)
+     */
+    virtual Wallet * createDeterministicWalletFromSpendKey(const std::string &path,
+                                                           const std::string &password,
+                                                           const std::string &language,
+                                                           NetworkType nettype,
+                                                           uint64_t restoreHeight,
+                                                           const std::string &spendKeyString,
+                                                           uint64_t kdf_rounds = 1) = 0;
+
    /*!
     * \deprecated this method creates a wallet WITHOUT a passphrase, use createWalletFromKeys(..., password, ...) instead
     * \brief  recovers existing wallet using keys. Creates a view only wallet if spend key is omitted
diff --git a/src/wallet/api/wallet_manager.cpp b/src/wallet/api/wallet_manager.cpp
index da2056d8a..c200f52ae 100644
--- a/src/wallet/api/wallet_manager.cpp
+++ b/src/wallet/api/wallet_manager.cpp
@@ -127,6 +127,22 @@ Wallet *WalletManagerImpl::createWalletFromKeys(const std::string &path,
     return wallet;
 }
 
+Wallet *WalletManagerImpl::createDeterministicWalletFromSpendKey(const std::string &path,
+                                                                 const std::string &password,
+                                                                 const std::string &language,
+                                                                 NetworkType nettype,
+                                                                 uint64_t restoreHeight,
+                                                                 const std::string &spendkey_string,
+                                                                 uint64_t kdf_rounds)
+{
+    WalletImpl * wallet = new WalletImpl(nettype, kdf_rounds);
+    if(restoreHeight > 0){
+        wallet->setRefreshFromBlockHeight(restoreHeight);
+    }
+    wallet->recoverDeterministicWalletFromSpendKey(path, password, language, spendkey_string);
+    return wallet;
+}
+
 Wallet *WalletManagerImpl::createWalletFromDevice(const std::string &path,
                                                   const std::string &password,
                                                   NetworkType nettype,
diff --git a/src/wallet/api/wallet_manager.h b/src/wallet/api/wallet_manager.h
index 28fcd36c9..be3ff8184 100644
--- a/src/wallet/api/wallet_manager.h
+++ b/src/wallet/api/wallet_manager.h
@@ -67,6 +67,13 @@ public:
                                                     const std::string &addressString,
                                                     const std::string &viewKeyString,
                                                     const std::string &spendKeyString = "") override;
+    virtual Wallet * createDeterministicWalletFromSpendKey(const std::string &path,
+                                                               const std::string &password,
+                                                               const std::string &language,
+                                                               NetworkType nettype,
+                                                               uint64_t restoreHeight,
+                                                               const std::string &spendkey_string,
+                                                               uint64_t kdf_rounds) override;
     virtual Wallet * createWalletFromDevice(const std::string &path,
                                             const std::string &password,
                                             NetworkType nettype,
-- 
2.48.0