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Add drop_and_recreate in privatefile class.

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When creating a private file we need to delete the file if exist.
This commit is contained in:
0xFFFC0000 2024-04-22 14:32:12 +00:00
parent 81d4db08eb
commit 100a7d06ee
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GPG Key ID: 650F7C2B7BDA3819
3 changed files with 26 additions and 5 deletions
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23
src/common/util.cpp
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@ -122,7 +122,7 @@ namespace tools
private_file::private_file(std::FILE* handle, std::string&& filename) noexcept
: m_handle(handle), m_filename(std::move(filename)) {}
private_file private_file::create(std::string name)
private_file private_file::create(std::string name, uint32_t extra_flags)
{
#ifdef WIN32
struct close_handle
@ -175,7 +175,7 @@ namespace tools
name.c_str(),
GENERIC_WRITE, FILE_SHARE_READ,
std::addressof(attributes),
CREATE_NEW, (FILE_ATTRIBUTE_TEMPORARY | FILE_FLAG_DELETE_ON_CLOSE),
CREATE_NEW, (FILE_ATTRIBUTE_TEMPORARY | FILE_FLAG_DELETE_ON_CLOSE | extra_flags),
nullptr
)
};
@ -194,7 +194,7 @@ namespace tools
}
}
#else
const int fdr = open(name.c_str(), (O_RDONLY | O_CREAT), S_IRUSR);
const int fdr = open(name.c_str(), (O_RDONLY | O_CREAT | extra_flags), S_IRUSR);
if (0 <= fdr)
{
struct stat rstats = {};
@ -225,6 +225,23 @@ namespace tools
return {};
}
private_file private_file::drop_and_recreate(std::string filename)
{
if (epee::file_io_utils::is_file_exist(filename)) {
boost::system::error_code ec{};
boost::filesystem::remove(filename, ec);
if (ec) {
MERROR("Failed to remove " << filename << ": " << ec.message());
return {};
}
}
#ifdef WIN32
return create(filename);
#else
return create(filename, O_EXCL);
#endif
}
private_file::~private_file() noexcept
{
try

6
src/common/util.h
View File

@ -80,7 +80,11 @@ namespace tools
/*! \return File only readable by owner and only used by this process
OR `private_file{}` on error. */
static private_file create(std::string filename);
static private_file create(std::string filename, uint32_t extra_flags = 0);
/*! \return Drop and create file only readable by owner and only used
by this process OR `private_file{}` on error. */
static private_file drop_and_recreate(std::string filename);
private_file(private_file&&) = default;
private_file& operator=(private_file&&) = default;

2
src/wallet/wallet_rpc_server.cpp
View File

@ -245,7 +245,7 @@ namespace tools
);
std::string temp = "monero-wallet-rpc." + bind_port + ".login";
rpc_login_file = tools::private_file::create(temp);
rpc_login_file = tools::private_file::drop_and_recreate(temp);
if (!rpc_login_file.handle())
{
LOG_ERROR(tr("Failed to create file ") << temp << tr(". Check permissions or remove file"));