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-rw-r--r--src/common/util.cpp98
-rw-r--r--src/common/util.h14
-rw-r--r--src/wallet/api/wallet.cpp1
-rw-r--r--src/wallet/wallet2.cpp8
-rw-r--r--src/wallet/wallet2.h1
5 files changed, 110 insertions, 12 deletions
diff --git a/src/common/util.cpp b/src/common/util.cpp
index 329352e94..eed6fd8d2 100644
--- a/src/common/util.cpp
+++ b/src/common/util.cpp
@@ -195,6 +195,73 @@ namespace tools
catch (...) {}
}
+ file_locker::file_locker(const std::string &filename)
+ {
+#ifdef WIN32
+ m_fd = INVALID_HANDLE_VALUE;
+ std::wstring filename_wide;
+ try
+ {
+ filename_wide = string_tools::utf8_to_utf16(filename);
+ }
+ catch (const std::exception &e)
+ {
+ MERROR("Failed to convert path \"" << filename << "\" to UTF-16: " << e.what());
+ return;
+ }
+ m_fd = CreateFileW(filename_wide.c_str(), GENERIC_READ, 0, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
+ if (m_fd != INVALID_HANDLE_VALUE)
+ {
+ OVERLAPPED ov;
+ memset(&ov, 0, sizeof(ov));
+ if (!LockFileEx(m_fd, LOCKFILE_FAIL_IMMEDIATELY | LOCKFILE_EXCLUSIVE_LOCK, 0, 1, 0, &ov))
+ {
+ MERROR("Failed to lock " << filename << ": " << std::error_code(GetLastError(), std::system_category()));
+ CloseHandle(m_fd);
+ m_fd = INVALID_HANDLE_VALUE;
+ }
+ }
+ else
+ {
+ MERROR("Failed to open " << filename << ": " << std::error_code(GetLastError(), std::system_category()));
+ }
+#else
+ m_fd = open(filename, O_RDONLY | O_CREAT, 0666);
+ if (m_fd != -1)
+ {
+ if (flock(m_fd, LOCK_EX | LOCK_NB) == -1)
+ {
+ MERROR("Failed to lock " << filename << ": " << std::strerr(errno));
+ close(m_fd);
+ m_fd = -1;
+ }
+ }
+ else
+ {
+ MERROR("Failed to open " << filename << ": " << std::strerr(errno));
+ }
+#endif
+ }
+ file_locker::~file_locker()
+ {
+ if (locked())
+ {
+#ifdef WIN32
+ CloseHandle(m_fd);
+#else
+ close(m_fd);
+#endif
+ }
+ }
+ bool file_locker::locked() const
+ {
+#ifdef WIN32
+ return m_fd != INVALID_HANDLE_VALUE;
+#else
+ return m_fd != -1;
+#endif
+ }
+
#ifdef WIN32
std::string get_windows_version_display_string()
{
@@ -451,10 +518,15 @@ std::string get_nix_version_display_string()
if (SHGetSpecialFolderPathW(NULL, psz_path, nfolder, iscreate))
{
- int size_needed = WideCharToMultiByte(CP_UTF8, 0, psz_path, wcslen(psz_path), NULL, 0, NULL, NULL);
- std::string folder_name(size_needed, 0);
- WideCharToMultiByte(CP_UTF8, 0, psz_path, wcslen(psz_path), &folder_name[0], size_needed, NULL, NULL);
- return folder_name;
+ try
+ {
+ return string_tools::utf16_to_utf8(psz_path);
+ }
+ catch (const std::exception &e)
+ {
+ MERROR("utf16_to_utf8 failed: " << e.what());
+ return "";
+ }
}
LOG_ERROR("SHGetSpecialFolderPathW() failed, could not obtain requested path.");
@@ -515,18 +587,20 @@ std::string get_nix_version_display_string()
int code;
#if defined(WIN32)
// Maximizing chances for success
- WCHAR wide_replacement_name[1000];
- MultiByteToWideChar(CP_UTF8, 0, replacement_name.c_str(), replacement_name.size() + 1, wide_replacement_name, 1000);
- WCHAR wide_replaced_name[1000];
- MultiByteToWideChar(CP_UTF8, 0, replaced_name.c_str(), replaced_name.size() + 1, wide_replaced_name, 1000);
-
- DWORD attributes = ::GetFileAttributesW(wide_replaced_name);
+ std::wstring wide_replacement_name;
+ try { wide_replacement_name = string_tools::utf8_to_utf16(replacement_name); }
+ catch (...) { return std::error_code(GetLastError(), std::system_category()); }
+ std::wstring wide_replaced_name;
+ try { wide_replaced_name = string_tools::utf8_to_utf16(replaced_name); }
+ catch (...) { return std::error_code(GetLastError(), std::system_category()); }
+
+ DWORD attributes = ::GetFileAttributesW(wide_replaced_name.c_str());
if (INVALID_FILE_ATTRIBUTES != attributes)
{
- ::SetFileAttributesW(wide_replaced_name, attributes & (~FILE_ATTRIBUTE_READONLY));
+ ::SetFileAttributesW(wide_replaced_name.c_str(), attributes & (~FILE_ATTRIBUTE_READONLY));
}
- bool ok = 0 != ::MoveFileExW(wide_replacement_name, wide_replaced_name, MOVEFILE_REPLACE_EXISTING);
+ bool ok = 0 != ::MoveFileExW(wide_replacement_name.c_str(), wide_replaced_name.c_str(), MOVEFILE_REPLACE_EXISTING);
code = ok ? 0 : static_cast<int>(::GetLastError());
#else
bool ok = 0 == std::rename(replacement_name.c_str(), replaced_name.c_str());
diff --git a/src/common/util.h b/src/common/util.h
index dc426830b..a57a85fee 100644
--- a/src/common/util.h
+++ b/src/common/util.h
@@ -91,6 +91,20 @@ namespace tools
const std::string& filename() const noexcept { return m_filename; }
};
+ class file_locker
+ {
+ public:
+ file_locker(const std::string &filename);
+ ~file_locker();
+ bool locked() const;
+ private:
+#ifdef WIN32
+ HANDLE m_fd;
+#else
+ int m_fd;
+#endif
+ };
+
/*! \brief Returns the default data directory.
*
* \details Windows < Vista: C:\\Documents and Settings\\Username\\Application Data\\CRYPTONOTE_NAME
diff --git a/src/wallet/api/wallet.cpp b/src/wallet/api/wallet.cpp
index c7dbd29e4..e2c4fe7af 100644
--- a/src/wallet/api/wallet.cpp
+++ b/src/wallet/api/wallet.cpp
@@ -721,6 +721,7 @@ bool WalletImpl::close(bool store)
LOG_PRINT_L1("Calling wallet::stop...");
m_wallet->stop();
LOG_PRINT_L1("wallet::stop done");
+ m_wallet->deinit();
result = true;
clearStatus();
} catch (const std::exception &e) {
diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp
index 28049fe92..f07736ebd 100644
--- a/src/wallet/wallet2.cpp
+++ b/src/wallet/wallet2.cpp
@@ -2636,6 +2636,7 @@ void wallet2::detach_blockchain(uint64_t height)
bool wallet2::deinit()
{
m_is_initialized=false;
+ m_keys_file_locker.reset();
return true;
}
//----------------------------------------------------------------------------------------------------
@@ -2802,10 +2803,12 @@ bool wallet2::store_keys(const std::string& keys_file_name, const epee::wipeable
crypto::chacha20(account_data.data(), account_data.size(), key, keys_file_data.iv, &cipher[0]);
keys_file_data.account_data = cipher;
+ m_keys_file_locker.reset();
std::string buf;
r = ::serialization::dump_binary(keys_file_data, buf);
r = r && epee::file_io_utils::save_string_to_file(keys_file_name, buf); //and never touch wallet_keys_file again, only read
CHECK_AND_ASSERT_MES(r, false, "failed to generate wallet keys file " << keys_file_name);
+ m_keys_file_locker.reset(new tools::file_locker(m_keys_file));
return true;
}
@@ -3935,12 +3938,17 @@ void wallet2::load(const std::string& wallet_, const epee::wipeable_string& pass
boost::system::error_code e;
bool exists = boost::filesystem::exists(m_keys_file, e);
THROW_WALLET_EXCEPTION_IF(e || !exists, error::file_not_found, m_keys_file);
+ m_keys_file_locker.reset(new tools::file_locker(m_keys_file));
+ THROW_WALLET_EXCEPTION_IF(!m_keys_file_locker->locked(), error::wallet_internal_error, "internal error: \"" + m_keys_file + "\" is opened by another wallet program");
+ // this temporary unlocking is necessary for Windows (otherwise the file couldn't be loaded).
+ m_keys_file_locker.reset();
if (!load_keys(m_keys_file, password))
{
THROW_WALLET_EXCEPTION_IF(true, error::file_read_error, m_keys_file);
}
LOG_PRINT_L0("Loaded wallet keys file, with public address: " << m_account.get_public_address_str(m_nettype));
+ m_keys_file_locker.reset(new tools::file_locker(m_keys_file));
//keys loaded ok!
//try to load wallet file. but even if we failed, it is not big problem
diff --git a/src/wallet/wallet2.h b/src/wallet/wallet2.h
index 705933979..d33d8258b 100644
--- a/src/wallet/wallet2.h
+++ b/src/wallet/wallet2.h
@@ -1308,6 +1308,7 @@ namespace tools
boost::optional<crypto::chacha_key> m_ringdb_key;
uint64_t m_last_block_reward;
+ std::unique_ptr<tools::file_locker> m_keys_file_locker;
};
}
BOOST_CLASS_VERSION(tools::wallet2, 25)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 15:46:12 +0000