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2012-11-18Bitcoin-Qt: fix crash on Windows caused by CDBEnv::EnvShutdown()Philip Kaufmann
- can be triggerd by just adding -proxy=crashme with 0.7.1 - crash occured, when AppInit2() was left with return false; after the first call to bitdb.open() (Step 6 in init) - this is caused by GetDataDir() or .string() in CDBEnv::EnvShutdown() called via the bitdb global destructor - init fDbEnvInit and fMockDb to false in CDBEnv::CDBEnv()
2012-11-10simplify CDBEnv::Open() / fix small glitchesPhilip Kaufmann
- remove pathEnv from CDBEnv, as this attribute is not needed - change path parameter in ::Open() to a reference - make nDbCache variable an unsigned integer - remove a missplaced ";" behin ::IsMock()
2012-11-04Remove -detachdb and stop's detach argument.Pieter Wuille
As the only BDB database left is the wallet, and it is always detached. Also remove IsChainFile() predicate and related chainfile-specific logic.
2012-10-20LevelDB block and coin databasesPieter Wuille
Split off CBlockTreeDB and CCoinsViewDB into txdb-*.{cpp,h} files, implemented by either LevelDB or BDB. Based on code from earlier commits by Mike Hearn in his leveldb branch.
2012-10-20Use singleton block tree database instancePieter Wuille
2012-10-20Batch block connection during IBDPieter Wuille
During the initial block download (or -loadblock), delay connection of new blocks a bit, and perform them in a single action. This reduces the load on the database engine, as subsequent blocks often update an earlier block's transaction already.
2012-10-20UltraprunePieter Wuille
This switches bitcoin's transaction/block verification logic to use a "coin database", which contains all unredeemed transaction output scripts, amounts and heights. The name ultraprune comes from the fact that instead of a full transaction index, we only (need to) keep an index with unspent outputs. For now, the blocks themselves are kept as usual, although they are only necessary for serving, rescanning and reorganizing. The basic datastructures are CCoins (representing the coins of a single transaction), and CCoinsView (representing a state of the coins database). There are several implementations for CCoinsView. A dummy, one backed by the coins database (coins.dat), one backed by the memory pool, and one that adds a cache on top of it. FetchInputs, ConnectInputs, ConnectBlock, DisconnectBlock, ... now operate on a generic CCoinsView. The block switching logic now builds a single cached CCoinsView with changes to be committed to the database before any changes are made. This means no uncommitted changes are ever read from the database, and should ease the transition to another database layer which does not support transactions (but does support atomic writes), like LevelDB. For the getrawtransaction() RPC call, access to a txid-to-disk index would be preferable. As this index is not necessary or even useful for any other part of the implementation, it is not provided. Instead, getrawtransaction() uses the coin database to find the block height, and then scans that block to find the requested transaction. This is slow, but should suffice for debug purposes.
2012-10-20Multiple blocks per filePieter Wuille
Change the block storage layer again, this time with multiple files per block, but tracked by txindex.dat database entries. The file format is exactly the same as the earlier blk00001.dat, but with smaller files (128 MiB for now). The database entries track how many bytes each block file already uses, how many blocks are in it, which range of heights is present and which range of dates.
2012-10-08Handle corrupt wallets gracefully.Gavin Andresen
Corrupt wallets used to cause a DB_RUNRECOVERY uncaught exception and a crash. This commit does three things: 1) Runs a BDB verify early in the startup process, and if there is a low-level problem with the database: + Moves the bad wallet.dat to wallet.timestamp.bak + Runs a 'salvage' operation to get key/value pairs, and writes them to a new wallet.dat + Continues with startup. 2) Much more tolerant of serialization errors. All errors in deserialization are reported by tolerated EXCEPT for errors related to reading keypairs or master key records-- those are reported and then shut down, so the user can get help (or recover from a backup). 3) Adds a new -salvagewallet option, which: + Moves the wallet.dat to wallet.timestamp.bak + extracts ONLY keypairs and master keys into a new wallet.dat + soft-sets -rescan, to recreate transaction history This was tested by randomly corrupting testnet wallets using a little python script I wrote (https://gist.github.com/3812689)
2012-07-11Run BDB disk-less for test_bitcoinLuke Dashjr
2012-06-20Remove CTxDB::ReadOwnerTxes.Pieter Wuille
It seems it wasn't ever used since 0.1.5.
2012-05-23Refactor: add IsChainFile helper. LoadBlockIndex() code movement.Jeff Garzik
2012-05-22CDBEnv: fix qt buildLuke Dashjr
2012-05-22Merge branch 'dbenv' into tmpJeff Garzik
Conflicts: src/db.cpp
2012-05-22Prevent crashes due to missing or corrupted database recordsJeff Garzik
Any problems seen during deserialization will throw an uncaught exception, crashing the entire bitcoin process. Properly return an error instead, so that we may at least log the error and gracefully shutdown other portions of the app.
2012-05-20Merge pull request #1354 from fanquake/masterPieter Wuille
Update Header Licenses
2012-05-19Further CDBEnv encapsulation work.Jeff Garzik
2012-05-19Remove unused nested BDB transaction supportJeff Garzik
2012-05-19Create CDBEnv::TxnBegin(), and use it in CDB::TxnBegin()Jeff Garzik
2012-05-19Encapsulate BDB environment inside new CDBEnv classJeff Garzik
Cleans up and organizes several scattered functions and variables related to the BDB env. Class CDBInit() existed to provide a guaranteed-via-C++-destructor cleanup of the db environment. A formal CDBEnv class provides all of this inside a single wrapper.
2012-05-19Default to DB_TXN_WRITE_NOSYNC for all transactional operationsJeff Garzik
* This is safer than DB_TXN_NOSYNC, and does not appear to impact performance. * Applying this to the dbenv is necessary to avoid many fdatasync(2) calls on db 5.x * We carefully and thoroughly flush databases upon shutdown and other important events already.
2012-05-18Update License in File HeadersFordy
I originally created a pull to replace the "COPYING" in crypter.cpp and crypter.h, but it turned out that COPYING was actually the correct file.
2012-05-17Merge pull request #1316 from jgarzik/dead-codeJeff Garzik
Remove dead code: CTxDB::EraseBlockIndex(), CBlockIndex::EraseBlockFromDisk()
2012-05-16CAddrDB: Replace BDB-managed addr.dat with internally managed peers.datJeff Garzik
2012-05-15Remove dead code: CTxDB::EraseBlockIndex(), CBlockIndex::EraseBlockFromDisk()Jeff Garzik
2012-04-26Make lsn_reset ("detach databases") optional and off by default.Pieter Wuille
Add an option -detachdb (and entry in OptionDialog), without which no lsn_reset is called on addr.dat and blkindex.dat. That means these files cannot be moved to a new environment, but shutdown can be significantly faster. The wallet file is always lsn_reset'ed. -detachdb corresponds to the old behaviour, though it is off by default now to speed up shutdowns.
2012-04-17Further reduce header dependenciesPieter Wuille
This commit removes the dependency of serialize.h on PROTOCOL_VERSION, and makes this parameter required instead of implicit. This is much saner, as it makes the places where changing a version number can have an influence obvious.
2012-04-17Move CWalletDB code to new walletdb module.Jeff Garzik
In addition to standard code separation, this change opens the door to fixing several include inter-dependencies.
2012-04-17Remove headers.hPieter Wuille
2012-03-26Merge branch 'master' of github.com:bitcoin/bitcoinGavin Andresen
2012-03-26Use erase instead of rewrite to remove old addr entriesPieter Wuille
2012-03-26Begin doxygen-compatible commentsPieter Wuille
2012-03-22Merge branch 'addrman' of https://github.com/sipa/bitcoinGavin Andresen
2012-02-26bitcoind changes to stop storing settings in wallet.dat.Gavin Andresen
2012-02-24CAddrMan: stochastic address managerPieter Wuille
Design goals: * Only keep a limited number of addresses around, so that addr.dat does not grow without bound. * Keep the address tables in-memory, and occasionally write the table to addr.dat. * Make sure no (localized) attacker can fill the entire table with his nodes/addresses. See comments in addrman.h for more detailed information.
2012-02-18Add SetMinVersion to CWalletPieter Wuille
2012-02-07Update all copyrights to 2012Gavin Andresen
2011-12-21Revert "Use standard C99 (and Qt) types for 64-bit integers"Wladimir J. van der Laan
This reverts commit 21d9f36781604e4ca9fc35dc65265593423b73e9.
2011-12-20Use standard C99 (and Qt) types for 64-bit integersLuke Dashjr
2011-12-19Use block times for 'hard' OP_EVAL switchover, and refactored EvalScriptGavin Andresen
so it takes a flag for how to interpret OP_EVAL. Also increased IsStandard size of scriptSigs to 500 bytes, so a 3-of-3 multisig transaction IsStandard.
2011-12-19OP_EVAL implementationGavin Andresen
OP_EVAL is a new opcode that evaluates an item on the stack as a script. It enables a new type of bitcoin address that needs an arbitrarily complex script to redeem.
2011-11-20Never remove database files on shutdown, it caused unreadable wallets on ↵Gavin Andresen
some testers' machines.
2011-11-17Only remove database log files on shutdown after wallet encryption/rewritev0.5.0rc6Gavin Andresen
2011-11-15Obsolete keypool and make sure database removes log files on shutdown.Gavin Andresen
2011-11-14ResilveringPieter Wuille
2011-08-09Unify copyright notices.Matt Corallo
To a variation on: // Copyright (c) 2009-2010 Satoshi Nakamoto // Copyright (c) 2011 The Bitcoin developers
2011-07-13Update CWallet::LoadWallet for proper return type.Jeff Garzik
2011-07-13fix warnings: expression result unused [-Wunused-value]Giel van Schijndel
In the assert()s take advantage of the fact that string constants ("string") are effectively of type 'const char []', which when used in an expression yield a non-NULL pointer. An assertion that should always fail can thus be formulated as: assert(!"fail); An assertion where a text message should be added to the expression can be written as such: assert("message" && expression); Signed-off-by: Giel van Schijndel <me@mortis.eu>
2011-07-12Merge pull request #381 from TheBlueMatt/nminversionJeff Garzik
Add minversion to wallet.
2011-07-13Add wallet privkey encryption.Matt Corallo
This commit adds support for ckeys, or enCrypted private keys, to the wallet. All keys are stored in memory in their encrypted form and thus the passphrase is required from the user to spend coins, or to create new addresses. Keys are encrypted with AES-256-CBC using OpenSSL's EVP library. The key is calculated via EVP_BytesToKey using SHA512 with (by default) 25000 rounds and a random salt. By default, the user's wallet remains unencrypted until they call the RPC command encryptwallet <passphrase> or, from the GUI menu, Options-> Encrypt Wallet. When the user is attempting to call RPC functions which require the password to unlock the wallet, an error will be returned unless they call walletpassphrase <passphrase> <time to keep key in memory> first. A keypoolrefill command has been added which tops up the users keypool (requiring the passphrase via walletpassphrase first). keypoolsize has been added to the output of getinfo to show the user the number of keys left before they need to specify their passphrase (and call keypoolrefill). Note that walletpassphrase will automatically fill keypool in a separate thread which it spawns when the passphrase is set. This could cause some delays in other threads waiting for locks on the wallet passphrase, including one which could cause the passphrase to be stored longer than expected, however it will not allow the passphrase to be used longer than expected as ThreadCleanWalletPassphrase will attempt to get a lock on the key as soon as the specified lock time has arrived. When the keypool runs out (and wallet is locked) GetOrReuseKeyFromPool returns vchDefaultKey, meaning miners may start to generate many blocks to vchDefaultKey instead of a new key each time. A walletpassphrasechange <oldpassphrase> <newpassphrase> has been added to allow the user to change their password via RPC. Whenever keying material (unencrypted private keys, the user's passphrase, the wallet's AES key) is stored unencrypted in memory, any reasonable attempt is made to mlock/VirtualLock that memory before storing the keying material. This is not true in several (commented) cases where mlock/VirtualLocking the memory is not possible. Although encryption of private keys in memory can be very useful on desktop systems (as some small amount of protection against stupid viruses), on an RPC server, the password is entered fairly insecurely. Thus, the only main advantage encryption has for RPC servers is for RPC servers that do not spend coins, except in rare cases, eg. a webserver of a merchant which only receives payment except for cases of manual intervention. Thanks to jgarzik for the original patch and sipa, gmaxwell and many others for all their input. Conflicts: src/wallet.cpp