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authorAndrew Chow <achow101-github@achow101.com>2020-05-15 19:37:55 -0400
committerAndrew Chow <achow101-github@achow101.com>2020-05-25 12:59:29 -0400
commit9ea2d258b46e8a9776100633585ed0feede5c2a4 (patch)
tree9a43aee82423a3629108f1c5a237d221dd820292 /src/wallet/db.cpp
parentb426c7764d26e280e1f814cf36e050743c45cd12 (diff)
Move RecoverDatabaseFile and RecoverKeysOnlyFilter into salvage.{cpp/h}
Diffstat (limited to 'src/wallet/db.cpp')
-rw-r--r--src/wallet/db.cpp128
1 files changed, 0 insertions, 128 deletions
diff --git a/src/wallet/db.cpp b/src/wallet/db.cpp
index cff83e3d01..4ed28b0623 100644
--- a/src/wallet/db.cpp
+++ b/src/wallet/db.cpp
@@ -317,134 +317,6 @@ BerkeleyBatch::SafeDbt::operator Dbt*()
return &m_dbt;
}
-/* End of headers, beginning of key/value data */
-static const char *HEADER_END = "HEADER=END";
-/* End of key/value data */
-static const char *DATA_END = "DATA=END";
-typedef std::pair<std::vector<unsigned char>, std::vector<unsigned char> > KeyValPair;
-
-bool RecoverDatabaseFile(const fs::path& file_path, void *callbackDataIn, bool (*recoverKVcallback)(void* callbackData, CDataStream ssKey, CDataStream ssValue), std::string& newFilename)
-{
- std::string filename;
- std::shared_ptr<BerkeleyEnvironment> env = GetWalletEnv(file_path, filename);
-
- // Recovery procedure:
- // move wallet file to walletfilename.timestamp.bak
- // Call Salvage with fAggressive=true to
- // get as much data as possible.
- // Rewrite salvaged data to fresh wallet file
- // Set -rescan so any missing transactions will be
- // found.
- int64_t now = GetTime();
- newFilename = strprintf("%s.%d.bak", filename, now);
-
- int result = env->dbenv->dbrename(nullptr, filename.c_str(), nullptr,
- newFilename.c_str(), DB_AUTO_COMMIT);
- if (result == 0)
- LogPrintf("Renamed %s to %s\n", filename, newFilename);
- else
- {
- LogPrintf("Failed to rename %s to %s\n", filename, newFilename);
- return false;
- }
-
- /**
- * Salvage data from a file. The DB_AGGRESSIVE flag is being used (see berkeley DB->verify() method documentation).
- * key/value pairs are appended to salvagedData which are then written out to a new wallet file.
- * NOTE: reads the entire database into memory, so cannot be used
- * for huge databases.
- */
- std::vector<KeyValPair> salvagedData;
-
- std::stringstream strDump;
-
- Db db(env->dbenv.get(), 0);
- result = db.verify(newFilename.c_str(), nullptr, &strDump, DB_SALVAGE | DB_AGGRESSIVE);
- if (result == DB_VERIFY_BAD) {
- LogPrintf("Salvage: Database salvage found errors, all data may not be recoverable.\n");
- }
- if (result != 0 && result != DB_VERIFY_BAD) {
- LogPrintf("Salvage: Database salvage failed with result %d.\n", result);
- return false;
- }
-
- // Format of bdb dump is ascii lines:
- // header lines...
- // HEADER=END
- // hexadecimal key
- // hexadecimal value
- // ... repeated
- // DATA=END
-
- std::string strLine;
- while (!strDump.eof() && strLine != HEADER_END)
- getline(strDump, strLine); // Skip past header
-
- std::string keyHex, valueHex;
- while (!strDump.eof() && keyHex != DATA_END) {
- getline(strDump, keyHex);
- if (keyHex != DATA_END) {
- if (strDump.eof())
- break;
- getline(strDump, valueHex);
- if (valueHex == DATA_END) {
- LogPrintf("Salvage: WARNING: Number of keys in data does not match number of values.\n");
- break;
- }
- salvagedData.push_back(make_pair(ParseHex(keyHex), ParseHex(valueHex)));
- }
- }
-
- bool fSuccess;
- if (keyHex != DATA_END) {
- LogPrintf("Salvage: WARNING: Unexpected end of file while reading salvage output.\n");
- fSuccess = false;
- } else {
- fSuccess = (result == 0);
- }
-
- if (salvagedData.empty())
- {
- LogPrintf("Salvage(aggressive) found no records in %s.\n", newFilename);
- return false;
- }
- LogPrintf("Salvage(aggressive) found %u records\n", salvagedData.size());
-
- std::unique_ptr<Db> pdbCopy = MakeUnique<Db>(env->dbenv.get(), 0);
- int ret = pdbCopy->open(nullptr, // Txn pointer
- filename.c_str(), // Filename
- "main", // Logical db name
- DB_BTREE, // Database type
- DB_CREATE, // Flags
- 0);
- if (ret > 0) {
- LogPrintf("Cannot create database file %s\n", filename);
- pdbCopy->close(0);
- return false;
- }
-
- DbTxn* ptxn = env->TxnBegin();
- for (KeyValPair& row : salvagedData)
- {
- if (recoverKVcallback)
- {
- CDataStream ssKey(row.first, SER_DISK, CLIENT_VERSION);
- CDataStream ssValue(row.second, SER_DISK, CLIENT_VERSION);
- if (!(*recoverKVcallback)(callbackDataIn, ssKey, ssValue))
- continue;
- }
- Dbt datKey(&row.first[0], row.first.size());
- Dbt datValue(&row.second[0], row.second.size());
- int ret2 = pdbCopy->put(ptxn, &datKey, &datValue, DB_NOOVERWRITE);
- if (ret2 > 0)
- fSuccess = false;
- }
- ptxn->commit(0);
- pdbCopy->close(0);
-
- return fSuccess;
-}
-
bool BerkeleyBatch::VerifyEnvironment(const fs::path& file_path, bilingual_str& errorStr)
{
std::string walletFile;