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author | MacroFake <falke.marco@gmail.com> | 2022-05-03 10:31:21 +0200 |
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committer | MacroFake <falke.marco@gmail.com> | 2022-05-03 10:39:42 +0200 |
commit | 12455acca2c3adf5c88ae9c1a02a7c192fe0f53b (patch) | |
tree | 13888b24d98bccaa4cf67066ac1c96f4a649ff04 /src/wallet/bdb.cpp | |
parent | 64d2715533b58309ef341575d5f221ddd5a8d89c (diff) | |
parent | f64aa9c411ad78259756a28756ec1eb8069b5ab4 (diff) | |
download | bitcoin-12455acca2c3adf5c88ae9c1a02a7c192fe0f53b.tar.xz |
Merge bitcoin/bitcoin#24470: Disallow more unsafe string->path conversions allowed by path append operators
f64aa9c411ad78259756a28756ec1eb8069b5ab4 Disallow more unsafe string->path conversions allowed by path append operators (Ryan Ofsky)
Pull request description:
Add more `fs::path` `operator/` and `operator+` overloads to prevent unsafe string->path conversions on Windows that would cause strings to be decoded according to the current Windows locale & code page instead of the correct string encoding.
Update application code to deal with loss of implicit string->path conversions by calling `fs::u8path` or `fs::PathFromString` explicitly, or by just changing variable types from `std::string` to `fs::path` to avoid conversions altogether, or make them happen earlier.
In all cases, there's no change in behavior either (1) because strings only contained ASCII characters and would be decoded the same regardless of what encoding was used, or (2) because of the 1:1 mapping between paths and strings using the `PathToString` and `PathFromString` functions.
Motivation for this PR was just that I was experimenting with #24469 and noticed that operations like `fs::path / std::string` were allowed, and I thought it would be better not to allow them.
ACKs for top commit:
hebasto:
ACK f64aa9c411ad78259756a28756ec1eb8069b5ab4
Tree-SHA512: 944cce49ed51537ee7a35ea4ea7f5feaf0c8fff2fa67ee81ec5adebfd3dcbaf41b73eb35e49973d5f852620367f13506fd12a7a9b5ae3a7a0007414d5c9df50f
Diffstat (limited to 'src/wallet/bdb.cpp')
-rw-r--r-- | src/wallet/bdb.cpp | 42 |
1 files changed, 24 insertions, 18 deletions
diff --git a/src/wallet/bdb.cpp b/src/wallet/bdb.cpp index 7f709ffa3e..1aa0339445 100644 --- a/src/wallet/bdb.cpp +++ b/src/wallet/bdb.cpp @@ -261,7 +261,7 @@ BerkeleyBatch::SafeDbt::operator Dbt*() bool BerkeleyDatabase::Verify(bilingual_str& errorStr) { fs::path walletDir = env->Directory(); - fs::path file_path = walletDir / strFile; + fs::path file_path = walletDir / m_filename; LogPrintf("Using BerkeleyDB version %s\n", BerkeleyDatabaseVersion()); LogPrintf("Using wallet %s\n", fs::PathToString(file_path)); @@ -275,6 +275,7 @@ bool BerkeleyDatabase::Verify(bilingual_str& errorStr) assert(m_refcount == 0); Db db(env->dbenv.get(), 0); + const std::string strFile = fs::PathToString(m_filename); int result = db.verify(strFile.c_str(), nullptr, nullptr, 0); if (result != 0) { errorStr = strprintf(_("%s corrupt. Try using the wallet tool bitcoin-wallet to salvage or restoring a backup."), fs::quoted(fs::PathToString(file_path))); @@ -297,11 +298,11 @@ BerkeleyDatabase::~BerkeleyDatabase() { if (env) { LOCK(cs_db); - env->CloseDb(strFile); + env->CloseDb(m_filename); assert(!m_db); - size_t erased = env->m_databases.erase(strFile); + size_t erased = env->m_databases.erase(m_filename); assert(erased == 1); - env->m_fileids.erase(strFile); + env->m_fileids.erase(fs::PathToString(m_filename)); } } @@ -313,7 +314,7 @@ BerkeleyBatch::BerkeleyBatch(BerkeleyDatabase& database, const bool read_only, b fFlushOnClose = fFlushOnCloseIn; env = database.env.get(); pdb = database.m_db.get(); - strFile = database.strFile; + strFile = fs::PathToString(database.m_filename); if (!Exists(std::string("version"))) { bool fTmp = fReadOnly; fReadOnly = false; @@ -335,6 +336,7 @@ void BerkeleyDatabase::Open() if (m_db == nullptr) { int ret; std::unique_ptr<Db> pdb_temp = std::make_unique<Db>(env->dbenv.get(), 0); + const std::string strFile = fs::PathToString(m_filename); bool fMockDb = env->IsMock(); if (fMockDb) { @@ -407,11 +409,11 @@ void BerkeleyBatch::Close() Flush(); } -void BerkeleyEnvironment::CloseDb(const std::string& strFile) +void BerkeleyEnvironment::CloseDb(const fs::path& filename) { { LOCK(cs_db); - auto it = m_databases.find(strFile); + auto it = m_databases.find(filename); assert(it != m_databases.end()); BerkeleyDatabase& database = it->second.get(); if (database.m_db) { @@ -434,12 +436,12 @@ void BerkeleyEnvironment::ReloadDbEnv() return true; }); - std::vector<std::string> filenames; + std::vector<fs::path> filenames; for (auto it : m_databases) { filenames.push_back(it.first); } // Close the individual Db's - for (const std::string& filename : filenames) { + for (const fs::path& filename : filenames) { CloseDb(filename); } // Reset the environment @@ -454,9 +456,10 @@ bool BerkeleyDatabase::Rewrite(const char* pszSkip) while (true) { { LOCK(cs_db); + const std::string strFile = fs::PathToString(m_filename); if (m_refcount <= 0) { // Flush log data to the dat file - env->CloseDb(strFile); + env->CloseDb(m_filename); env->CheckpointLSN(strFile); m_refcount = -1; @@ -508,7 +511,7 @@ bool BerkeleyDatabase::Rewrite(const char* pszSkip) } if (fSuccess) { db.Close(); - env->CloseDb(strFile); + env->CloseDb(m_filename); if (pdbCopy->close(0)) fSuccess = false; } else { @@ -544,13 +547,14 @@ void BerkeleyEnvironment::Flush(bool fShutdown) LOCK(cs_db); bool no_dbs_accessed = true; for (auto& db_it : m_databases) { - std::string strFile = db_it.first; + const fs::path& filename = db_it.first; int nRefCount = db_it.second.get().m_refcount; if (nRefCount < 0) continue; + const std::string strFile = fs::PathToString(filename); LogPrint(BCLog::WALLETDB, "BerkeleyEnvironment::Flush: Flushing %s (refcount = %d)...\n", strFile, nRefCount); if (nRefCount == 0) { // Move log data to the dat file - CloseDb(strFile); + CloseDb(filename); LogPrint(BCLog::WALLETDB, "BerkeleyEnvironment::Flush: %s checkpoint\n", strFile); dbenv->txn_checkpoint(0, 0, 0); LogPrint(BCLog::WALLETDB, "BerkeleyEnvironment::Flush: %s detach\n", strFile); @@ -590,11 +594,12 @@ bool BerkeleyDatabase::PeriodicFlush() // Don't flush if there haven't been any batch writes for this database. if (m_refcount < 0) return false; + const std::string strFile = fs::PathToString(m_filename); LogPrint(BCLog::WALLETDB, "Flushing %s\n", strFile); int64_t nStart = GetTimeMillis(); // Flush wallet file so it's self contained - env->CloseDb(strFile); + env->CloseDb(m_filename); env->CheckpointLSN(strFile); m_refcount = -1; @@ -605,6 +610,7 @@ bool BerkeleyDatabase::PeriodicFlush() bool BerkeleyDatabase::Backup(const std::string& strDest) const { + const std::string strFile = fs::PathToString(m_filename); while (true) { { @@ -612,14 +618,14 @@ bool BerkeleyDatabase::Backup(const std::string& strDest) const if (m_refcount <= 0) { // Flush log data to the dat file - env->CloseDb(strFile); + env->CloseDb(m_filename); env->CheckpointLSN(strFile); // Copy wallet file - fs::path pathSrc = env->Directory() / strFile; + fs::path pathSrc = env->Directory() / m_filename; fs::path pathDest(fs::PathFromString(strDest)); if (fs::is_directory(pathDest)) - pathDest /= fs::PathFromString(strFile); + pathDest /= m_filename; try { if (fs::exists(pathDest) && fs::equivalent(pathSrc, pathDest)) { @@ -831,7 +837,7 @@ std::unique_ptr<BerkeleyDatabase> MakeBerkeleyDatabase(const fs::path& path, con std::unique_ptr<BerkeleyDatabase> db; { LOCK(cs_db); // Lock env.m_databases until insert in BerkeleyDatabase constructor - std::string data_filename = fs::PathToString(data_file.filename()); + fs::path data_filename = data_file.filename(); std::shared_ptr<BerkeleyEnvironment> env = GetBerkeleyEnv(data_file.parent_path(), options.use_shared_memory); if (env->m_databases.count(data_filename)) { error = Untranslated(strprintf("Refusing to load database. Data file '%s' is already loaded.", fs::PathToString(env->Directory() / data_filename))); |