The current code contains a rather complex script template matching engine,
which is only used for 3 particular script types (P2PK, P2PKH, multisig).
The first two of these are trivial to match for otherwise, and a specialized
matcher for multisig is both more compact and more efficient than a generic
one.
The goal is being more flexible, so that for example larger standard multisigs
inside SegWit outputs are more easy to implement.
As a side-effect, it also gets rid of the pseudo opcodes hack.
Previously this was an inline test where the specificity was probably judged
overly specific. As a class method it makes sense to maintain consistency.
And replace some magic values with their constant equivalents.
Zcash: Excludes changes to the following functions we don't have:
- ExtractPubKey (bitcoin/bitcoin#6415)
- IsCompressedPubKey (bitcoin/bitcoin#8499)
Previously only one PUSHDATA was allowed, needlessly limiting
applications such as matching OP_RETURN contents with bloom filters that
operate on a per-PUSHDATA level. Now any combination that passes
IsPushOnly() is allowed, so long as the total size of the scriptPubKey
is less than 42 bytes. (unchanged modulo non-minimal PUSHDATA encodings)
Also, this fixes the odd bug where previously the PUSHDATA could be
replaced by any single opcode, even sigops consuming opcodes such as
CHECKMULTISIG. (20 sigops!)
Previously unlike other transaction types the TX_SCRIPTHASH would not
clear vSolutionsRet, which means that unlike other transaction types if
it was called twice in a row you would get the result of the previous
invocation as well.
We always locally check alerts against our subversion string without comments.
This change ensures that we will also propagate alerts to peers based on their
subversion strings without comments. Note that if an alert specifically targets
a commented subversion string, we will only relay it to peers with the exact
same comments.
Fixes#2007
This checks to see if the system clock appears to be bad and gives a
helpful error message. If the user's clock is set incorrectly, hopefully
they'll abort, fix it, and then save themselves a fruitless resync.
`bitcoind -X -noX` ends up, unintuitively, with `X` set.
(for all boolean options X)
This result is due to the odd two-pass processing of arguments. This
patch fixes this oddity and simplifies the code at the same time.
As suggested by Greg Maxwell-- unit test to make sure a block
with a double-spend in it doesn't pass validation if half of
the double-spend is already in the memory pool (so full-blown
transaction validation is skipped) when the block is received.
IPv6 RPC patch
Cherry-picked from bitcoin/bitcoin#7489.
To support CI updates via GKE, this patch ensures hosts using only IPv4 can function gracefully on `proxy_test.py`.
Homu
Dimitris Apostolou
Pieter Wuille
Ben Woosley
Jim Posen
Peter Todd
Luke Dashjr
Jorge Timón
Jack Grigg
Gregory Maxwell
Gregory Sanders
MarcoFalke
Jonas Schnelli
Casey Rodarmor
Wladimir J. van der Laan
Gavin Andresen
Marshall Gaucher
str4d