* Delete canonical_tests.cpp, and move the tests to script_tests.cpp.
* Split off SCRIPT_VERIFY_DERSIG from SCRIPT_VERIFY_STRICTENC (the BIP62 part of it).
* Change signature STRICTENC/DERSIG semantics to fail the script entirely rather than the CHECKSIG result (softfork safety, and BIP62 requirement).
* Add many autogenerated tests for several odd cases.
* Mention specific BIP62 rules in the script verification flags.
7c70438 Get rid of the dummy CCoinsViewCache constructor arg (Pieter Wuille)
ed27e53 Add coins_tests with a large randomized CCoinViewCache test. (Pieter Wuille)
058b08c Do not keep fully spent but unwritten CCoins entries cached. (Pieter Wuille)
c9d1a81 Get rid of CCoinsView's SetCoins and SetBestBlock. (Pieter Wuille)
f28aec0 Use ModifyCoins instead of mutable GetCoins. (Pieter Wuille)
Move the txid duplicates check into BuildMerkleTree, where it can be done
much more efficiently (without needing to build a full txid set to detect
duplicates).
The previous version (using the std::set<uint256> to detect duplicates) was
also slightly too weak. A block mined with actual duplicate transactions
(which is invalid, due to the inputs of the duplicated transactions being
seen as double spends) would trigger the duplicates logic, resulting in the
block not being stored on disk, and rerequested. This change fixes that by
only triggering in the case of duplicated transactions that can actually
result in an identical merkle root.
Instead of storing CCoins entries directly in CCoinsMap, store a CCoinsCacheEntry
which additionally keeps track of whether a particular entry is:
* dirty: potentially different from its parent view.
* fresh: the parent view is known to not have a non-pruned version.
This allows us to skip non-dirty cache entries when pushing batches of changes up,
and to remove CCoins entries about transactions that are fully spent before the
parent cache learns about them.
All direct modifications are now done through ModifyCoins, and BatchWrite is
used for pushing batches of queued modifications up, so we don't need the
low-level SetCoins and SetBestBlock anymore in the top-level CCoinsView class.
Replace the mutable non-copying GetCoins method with a ModifyCoins, which
returns an encapsulated iterator, so we can keep track of concurrent
modifications (as iterators can be invalidated by those) and run cleanup
code after a modification is finished.
This also removes the overloading of the 'GetCoins' name.
2c2cc5d Remove some unnecessary c_strs() in logging and the GUI (Philip Kaufmann)
f7d0a86 netbase: Use .data() instead of .c_str() on binary string (Wladimir J. van der Laan)
e088d65 Separate script/sign (jtimon)
9294a4b Separate CScriptCompressor (jtimon)
c4408a6 Separate script/standard (jtimon)
da03e6e Separate script/interpreter (jtimon)
cbd22a5 Move CScript class and dependencies to script/script (jtimon)
86dbeea Rename script.h/.cpp to scriptutils.h/.cpp (plus remove duplicated includes) (jtimon)
Rebased-by: Pieter Wuille
1e4f87f Use memcmp for uint256 equality/inequality (Pieter Wuille)
8a41e1e Use boost::unordered_map for mapBlockIndex (Pieter Wuille)
145d5be Introduce BlockMap type for mapBlockIndex (Pieter Wuille)
a0dbe43 checkpoints.cpp depends on main, it can use mapBlockIndex directly (Pieter Wuille)
The efficient version of CCoinsViewCache::GetCoins only works for known-to-exist
cache entries, requiring a separate HaveCoins call beforehand. This is
inefficient as both perform a hashtable lookup.
Replace the non-mutable GetCoins with AccessCoins, which returns a potentially-NULL
pointer. This also decreases the overloading of GetCoins.
Also replace some copying (inefficient) GetCoins calls with equivalent AccessCoins,
decreasing the copying.
ad49c25 Split up util.cpp/h (Wladimir J. van der Laan)
f841aa2 Move `COIN` and `CENT` to core.h (Wladimir J. van der Laan)
6e5fd00 Move `*Version()` functions to version.h/cpp (Wladimir J. van der Laan)
b4aa769 Move `S_I*` constants and `MSG_NOSIGNAL` to compat.h (Wladimir J. van der Laan)
af8297c Move functions in wallet.h to implementation file (Wladimir J. van der Laan)
651480c move functions in main and net to implementation files (Wladimir J. van der Laan)
610a8c0 Move SetThreadPriority implementation to util.cpp instead of the header (Wladimir J. van der Laan)
f780e65 Remove unused function `ByteReverse` from util.h (Wladimir J. van der Laan)
121d6ad Remove unused `alignup` function from util.h (Wladimir J. van der Laan)
d1e26d4 Move CMedianFilter to timedata.cpp (Wladimir J. van der Laan)
d0867ac Use const CCoinsView's at some places. (Daniel Kraft)
a3dc587 Make appropriate getter-routines "const" in CCoinsView. (Daniel Kraft)
ffb4c21 Mark LevelDB "Read" and "Exists" functions as const. (Daniel Kraft)
Remove the 'state' and 'exceptmask' from serialize.h's stream implementations,
as well as related methods.
As exceptmask always included 'failbit', and setstate was always called with
bits = failbit, all it did was immediately raise an exception. Get rid of
those variables, and replace the setstate with direct exception throwing
(which also removes some dead code).
As a result, good() is never reached after a failure (there are only 2
calls, one of which is in tests), and can just be replaced by !eof().
fail(), clear(n) and exceptions() are just never called. Delete them.
* Replace -benchmark (and the related fBenchmark) with a regular debug option, -debug=bench.
* Increase coverage and granularity of individual block processing steps.
* Add cummulative times.
This adds a -whitelist option to specify subnet ranges from which peers
that connect are whitelisted. In addition, there is a -whitebind option
which works like -bind, except peers connecting to it are also
whitelisted (allowing a separate listen port for trusted connections).
Being whitelisted has two effects (for now):
* They are immune to DoS disconnection/banning.
* Transactions they broadcast (which are valid) are always relayed,
even if they were already in the mempool. This means that a node
can function as a gateway for a local network, and that rebroadcasts
from the local network will work as expected.
Whitelisting replaces the magic exemption localhost had for DoS
disconnection (local addresses are still never banned, though), which
implied hidden service connects (from a localhost Tor node) were
incorrectly immune to DoS disconnection as well. This old
behaviour is removed for that reason, but can be restored using
-whitelist=127.0.0.1 or -whitelist=::1 can be specified. -whitebind
is safer to use in case non-trusted localhost connections are expected
(like hidden services).
75f51f2a introduced asynchronous processing for blocks, where reject messages
and DoS scoring could be applied outside of ProcessBlock, because block
validation may happen later.
However, some types of errors are still detected immediately (in particular,
CheckBlock violations), which need acting after ProcessBlock returns.
Pieter Wuille