Four cases included:
* The CLTV operand type mismatches the tx locktime. In the script it is
1 (interpreted as block height), but in the tx is 500000000
(interpreted as date)
* The stack is empty when executing OP_CLTV
* The tx is final by having only one input with MAX_INT sequence number
* The operand for CLTV is negative (after OP_0 OP_1 OP_SUB)
Rebased-From: cb54d17355864fa08826d6511a0d7692b21ef2c9
bip65-cltv.py is based on the earlier BIP66 soft-fork RPC test
implemented by Pieter Wuille's 819bcf9b9902319176cdb1d476cacfee9b3727ec
bip65-cltv-p2p.py is based on the earlier BIP66 P2P test by Suhas
Daftuar's d76412b068d95454732aa3def95decf35251759a
Rebased-From: 308257856099e82e91881ba97f741d840184727c
Based on the earlier BIP66 soft-fork logic implemented by Pieter
Wuille's 5a47811da5158df763aa2fca09ce646ee0c51e7b
Rebased-From: 287f54fc90c29301faede8d4ac2ea24a91441917
Transactions that fail CLTV verification will be rejected from the
mempool, making it easy to test the feature. However blocks containing
"invalid" CLTV-using transactions will still be accepted; this is *not*
the soft-fork required to actually enable CLTV for production use.
Rebased-From: ffd75adce01a78b3461b3ff05bcc2b530a9ce994
<nLockTime> CHECKLOCKTIMEVERIFY -> <nLockTime>
Fails if tx.nLockTime < nLockTime, allowing the funds in a txout to be
locked until some block height or block time in the future is reached.
Only the logic and unittests are implemented; this commit does not have
any actual soft-fork logic in it.
Thanks to Pieter Wuille for rebase.
Credit goes to Gregory Maxwell for the suggestion of comparing the
argument against the transaction nLockTime rather than the current
time/blockheight directly.
Rebased-From: bc60b2b4b401f0adff5b8b9678903ff8feb5867b
While the existing numeric opcodes are all limited to 4-byte bignum
arguments, new opcodes will need different limits.
Rebased-From: 99088d60d8a7747c6d1a7fd5d8cd388be1b3e138
This adds SCRIPT_VERIFY_LOW_S to STANDARD_SCRIPT_VERIFY_FLAGS which
will make the node require the canonical 'low-s' encoding for
ECDSA signatures when relaying or mining.
Consensus behavior is unchanged.
The rational is explained in a81cd96805ce6b65cca3a40ebbd3b2eb428abb7b:
Absent this kind of test ECDSA is not a strong signature as given
a valid signature {r, s} both that value and {r, -s mod n} are valid.
These two encodings have different hashes allowing third parties a
vector to change users txids. These attacks are avoided by picking
a particular form as canonical and rejecting the other form(s); in
the of the LOW_S rule, the smaller of the two possible S values is
used.
If widely deployed this change would eliminate the last remaining
known vector for nuisance malleability on boring SIGHASH_ALL
p2pkh transactions. On the down-side it will block most
transactions made by sufficiently out of date software.
Unlike the other avenues to change txids on boring transactions this
one was randomly violated by all deployed bitcoin software prior to
its discovery. So, while other malleability vectors where made
non-standard as soon as they were discovered, this one has remained
permitted. Even BIP62 did not propose applying this rule to
old version transactions, but conforming implementations have become
much more common since BIP62 was initially written.
Bitcoin Core has produced compatible signatures since a28fb70e in
September 2013, but this didn't make it into a release until 0.9
in March 2014; Bitcoinj has done so for a similar span of time.
Bitcoinjs and electrum have been more recently updated.
This does not replace the need for BIP62 or similar, as miners can
still cooperate to break transactions. Nor does it replace the
need for wallet software to handle malleability sanely[1]. This
only eliminates the cheap and irritating DOS attack.
[1] On the Malleability of Bitcoin Transactions
Marcin Andrychowicz, Stefan Dziembowski, Daniel Malinowski, Łukasz Mazurek
http://fc15.ifca.ai/preproceedings/bitcoin/paper_9.pdf
Conflicts:
src/policy/policy.h
Rebased-From: b196b685c9089b74fd4ff3d9a28ea847ab36179b
Github-Pull: #6769
5e6d893 travis: for travis generating an extra build (Cory Fields)
ceba0f8 PARTIAL: typofixes (found by misspell_fixer) (Veres Lajos)
2ede6b7 add support for miniupnpc api version 14 (Pavel Vasin)
0dfcdd4 rpc-tests: re-enable rpc-tests for Windows (Cory Fields)
c9ad65e net: Set SO_REUSEADDR for Windows too (Cory Fields)
0194bdd add unit test for CNetAddr::GetGroup. (Alex Morcos)
bdf2542 Fix masking of irrelevant bits in address groups. (Alex Morcos)
65426ac Add missing files to files.md (fanquake)
28d76d2 Handle leveldb::DestroyDB() errors on wipe failure (Adam Weiss)
843469e Use unique name for AlertNotify tempfile (Casey Rodarmor)
4e5ea71 Make sure LogPrint strings are line-terminated (J Ross Nicoll)
3861f0f build: fix libressl detection (Cory Fields)
04507de Avoid leaking file descriptors in RegisterLoad (Casey Rodarmor)
8b59079 Add autogen.sh to source tarball. (randy-waterhouse)
The thin space QT html hack results in cut-off chars/nums after a line break.
Avoid word wrap line breaks by using a smaller font and a line break before each alternative value)
Rebased-From: 24cb7c7bbba224dcb73fcf69296f5ef4734f745f
Github-Pull: #6694
When running the rpc tests in Wine, nodes often fail to listen on localhost
due to a stale socket from a previous run. This aligns the behavior with other
platforms.
Add error checking to CLevelDBWrapper for errors from
leveldb::DestroyDB(). Without it, if unlink() or DeleteFileW() fail to
delete files, they will fail silent. If they fail to delete any files,
CLevelDBWrapper will silently open and read the existing database.
Typically any permissions issues would be caught by leveldb as it churns
through many files as part of its compaction process, but it is
conceivable that this could cause problems on Windows with anti-virus
and indexing software.
Checking libcrypto for a function after we've already found a (possibly
different) libcrypto is not what we want to do here.
pkg-config might've found a cross lib while AC_CHECK_LIB may find a different
or native one.
Run a link-test against the lib that's already been found instead.
Move from sourceforge to linux foundation.
Also get rid of some other stale mentions of sourceforge.
Github-Pull: #6319
Rebased-From: 88d8525ca2ff2afc171cd0f625a098371f3a6af5
Make it possible to opt-out of the centralized alert system by providing
an option `-noalerts` or `-alerts=0`. The default remains unchanged.
This is a gentler form of #6260, in which I went a bit overboard by
removing the alert system completely.
I intend to add this to the GUI options in another pull after this.
Conflicts:
src/init.cpp
src/main.cpp
Github-Pull: #6274
Rebased-From: 02a6702a82a5b00e0e0351041dd3267308b7f319
Chance "getbalance *" not to use IsTrusted. The method and result
now match the "getbalance <specific-account>" behavior. In
particular, "getbalance * 0" now works.
Also fixed a comment -- GetGalance has required 1 confirmation
for many years, and the default "getbalance *" behavior matches
that.
Github-Pull: #6276
Rebased-From: 7d6a85ab5b1dc96e0f3f6f835f27bb81ba2af919
Rebased-By: @trasher-
Change `read_string` to fail when not the entire input has been
consumed. This avoids unexpected, even dangerous behavior (fixes#6223).
The new JSON parser adapted in #6121 also solves this problem so in
master this is a temporary fix, but should be backported to older releases.
Also adds tests for the new behavior.
Github-Pull: #6226
Rebased-From: 4e157fc60dae5ca69933ea4c1585a2a078b4d957
To protect privacy, do not use UPNP when a proxy is set. The user may
still specify -listen=1 to listen locally (for a hidden service), so
don't rely on this happening through -listen.
Fixes#2927.
Conflicts:
src/init.cpp
Rebased-From: 8c35b6f3be218101630101806300cfd75be23f58
Github-Pull: #6153
Fix two CSubNet constructor problems:
- The use of `/x` where 8 does not divide x was broken, due to a
bit-order issue
- The use of e.g. `1.2.3.4/24` where the netmasked bits in the network
are not 0 was broken. Fix this by explicitly normalizing the netwok
according to the bitmask.
Also add tests for these cases.
Fixes#6179. Thanks to @jonasschnelli for reporting and initial fix.
Rebased-From: b45c50ce511dbf541ea086ae40a3ad16ff06de0c
Github-Pull: #6186
Simplify the code by using CAddress.ip directly, instead of the reversed
GetByte() semantics.
Rebased-From: 19e8d7be42039724b4893515ec6457d0187024a9
Github-Pull: #6186
When the internal miner is enabled at the start of a new node, there
is an near instant assert in TestBlockValidity because its attempting
to mine a block before the top checkpoint.
Also avoids a data race around vNodes.
Github-Pull: #6123
Rebased-From: bba7c249296a9a2f444e1035fef8f8b593ba2aaf
On hosts that had spent some time with a failed internet connection their
nAttempts penalty was going through the roof (e.g. thousands for all peers)
and as a result the connect search was pegging the CPU and failing to get
more than a 4 connections after days of running (because it was taking so
long per try).
Rebased-From: a784f90c9892f06b9fea4e7579f5eca3585482c3
Github-Pull: #6029
