Commit Graph

1838 Commits

Author SHA1 Message Date
Andrew Poelstra e01e9ad3be Implement CHECKSIG and CHECKSIGVERIFY
Still need the multisig ops, and p2sh
2014-08-10 13:51:05 -07:00
Andrew Poelstra ecdb750148 Implement script except for crypto opcodes, replace zero_hash by Default
Looks like to implement the crypto opcodes I may need to switch from
rust-crypto to rust-openssl.. or implement RIPEMD-160 for rust-crypto.
In either case I will need to generalize the hash.rs stuff to support
other hashes, so I'm committing here as a checkpoint before doing all
that.
2014-08-05 19:08:06 -07:00
Andrew Poelstra 2986e1f983 Fix for new partial-move rules; swap hash le_hex_string and be_hex_string
I noticed that the little/big endian hex string functions for Sha256dHash
did not match my intuition. What we should have is that the raw bytes
correspond to a little-endian representation (since we convert to Uint256
by transmuting, and Uint256's have little-endian representation) while
the reversed raw bytes are big-endian.

This means that the output from `sha256sum` is "little-endian", while the
standard "zeros on the left" output from bitcoind is "big-endian". This
is correct since we think of blockhashes as being "below the target" when
they have lots of zeros on the left, and we also notice that when hashing
Bitcoin objects with sha256sum that the output hashes are always reversed.

These two functions le_hex_string and be_hex_string should really not be
used outside of the library; the Encodable trait should give access to a
"big endian" representation while ConsensusEncodable gives access to a
"little endian" representation. That way we describe the split in terms
of user-facing/consensus code rather than big/little endian code, which
is a better way of thinking about it. After all, a hash is a collection
of bytes, not a number --- it doesn't have an intrinsic endianness.

Oh, and by the way, to compute a sha256d hash from sha256sum, you do

  echo -n 'data' | sha256sum | xxd -r -p | sha256dsum
2014-08-03 14:52:59 -07:00
Andrew Poelstra 474d04d154 Manually implement Encodable/Decodable/Show for Network
Since TOML will not encode C-like enums as strings, we do it
ourselves. This is also worthwhile so that we can get the
lowercase "bitcoin" and "testnet" as encodings for the actual
enum values, which are more verbose and camel case.
2014-08-03 06:29:19 -07:00
Andrew Poelstra a6eb33efd0 Actually encode network message
A pretty serious oversight :) this was not noticed because I was
simultaneously dealing with a serious tcp connection bug in rustc,
and I had thought bitcoind's angry disconnects were a further
symptom of that.
2014-08-02 18:22:27 -07:00
Andrew Poelstra 275c93ab6b Add docs for SimpleDecoder and SimpleEncoder traits 2014-08-01 11:16:18 -07:00
Andrew Poelstra c80ec9bda8 Sha256dHash: add string encoder/decoder 2014-08-01 10:52:10 -07:00
Andrew Poelstra a2ce000b2b Revamp Serializable interface to be similar to Encoder/Encodable
This is a massive simplification, fixes a couple endianness bugs (though
not all of them I don't think), should give a speedup, gets rid of the
`serialize_iter` crap.
2014-08-01 09:01:39 -07:00
Andrew Poelstra 020295f8c9 Add a bunch of traits to Network so I can use it as a HashMap key 2014-07-29 15:55:25 -07:00
Andrew Poelstra 8cd8947cf3 Implement some more ToJson's 2014-07-29 10:19:21 -07:00
Andrew Poelstra a34f2642f1 Implement ToJson for BlockHeader
I think this is what I want to do for everything json-visible...perhaps
I will not be able to keep the macro for it though, since there are
some clever variations on it (e.g. blocks should have their header's
hash as a field, txes should appear as txids unless vebose output is
requested, etc.)
2014-07-28 20:12:10 -07:00
Andrew Poelstra 1938959017 Add `genesis_hash` function to Blockchain 2014-07-28 12:30:45 -07:00
Andrew Poelstra 6f7e73d6b4 Fix nu_select! macro for borrowck 2014-07-26 19:36:38 -07:00
Andrew Poelstra 322c937c3c Fixed borrowck problems with nu_select! in an evil way 2014-07-26 11:28:55 -07:00
Andrew Poelstra b5b7a6b080 Another workaround for https://github.com/rust-lang/rust/issues/15763 2014-07-25 16:50:58 -07:00
Andrew Poelstra cc942a47f3 Workaround for rustc hiccup in `for` loop restructuring, remove assert from deserialization code
Thanks to the assert change there is a segfault happening :(
2014-07-25 15:52:48 -07:00
Andrew Poelstra 128ebcc6d5 Fix comment in UTXOset for stxo cache ordering 2014-07-25 14:35:46 -07:00
Andrew Poelstra 44dc29f013 Fix BIP30 rewind handling; add unsafe annotations to ThinVec::reserve 2014-07-25 12:44:54 -07:00
Andrew Poelstra fe9ca39736 Send new handshake on reconnect 2014-07-24 12:52:28 -07:00
Andrew Poelstra 809bad5ff5 Reconnect on network errors; use Mutexes to control Socket access more precisely 2014-07-24 08:27:40 -07:00
Andrew Poelstra 9be493eeaf Move Local::take() into a scope where it is guaranteed to be used
This was causing a mystery crash. Fixed.
2014-07-23 15:19:44 -07:00
Andrew Poelstra 1be45395da Store TxOuts directly in UtxoSet rather than in Boxes
This gives a significant speedup during deserialization since we
don't have to allocate for every output.
2014-07-23 11:27:03 -07:00
Andrew Poelstra b5c25ff768 Distinguish between network/decode errors in network message decode
It is now visible that EOF (i.e. peer hung up) is interpreted
as a message decode error. Probably what we want to do is reset
the connection on any error. TODO
2014-07-23 11:22:35 -07:00
Andrew Poelstra 9cb86dd21b Change InvalidInput to EndOfFile in several cases 2014-07-22 10:59:58 -07:00
Andrew Poelstra ca6d4cdde4 Workaround for https://github.com/rust-lang/rust/issues/15763 2014-07-21 19:40:29 -07:00
Andrew Poelstra 46969b3396 Replace PatriciaTree with HashMap for UTXO set
We get a speed up (~5%) and memory savings (~10%) on initial sync from
using a HashMap, though it's hard to tell precisely how much savings
because it's quite nonlinear.

I haven't tested de/serialization. Some work needs to be done there to
split up the UTXO set since it takes forever to saveload.
2014-07-20 16:52:00 -07:00
Andrew Poelstra 54e4ea4586 Rename Serializable::hash() to Serializable::bitcoin_hash()
We were conflicting with the Rust stdlib trait Hash, which is used
by various datastructures which need a general hash. Also implement
Hash for Sha256dHash so that we can use bitcoin hashes as keys for
such data structures.
2014-07-19 16:11:55 -07:00
Andrew Poelstra a3846965e3 blockchain: replace Rc mess with internal raw pointers 2014-07-19 15:23:04 -07:00
Andrew Poelstra 93dadd6a6e Add iterators to patricia tree 2014-07-19 13:02:25 -07:00
Andrew Poelstra 29eba4c4c3 Add LICENSE file with CC0 in it 2014-07-18 17:37:13 -07:00
Andrew Poelstra 73e8b542c0 Add testnet blockspacing rule 2014-07-18 16:41:09 -07:00
Andrew Poelstra 51038f5810 Add alternate network support to `Blockchain`, `UtxoSet`, `Socket`
Still need to do alternate diffchange rules..
2014-07-18 14:38:35 -07:00
Andrew Poelstra 8f826a959d Introduce `BitcoinResult`, use it instead of boolean returns in blockchain 2014-07-18 12:40:04 -07:00
Andrew Poelstra 426e1fc556 Change name to `bitcoin` in Cargo.toml (copying convention from toml-rs and color-rs) 2014-07-18 12:07:10 -07:00
Andrew Poelstra b5fd47b334 Allow user to change network magic, add constant for testnet
We need to add a "difficulty back to 1 after 20 minutes" difficulty
rule to actually support testnet, but this is a start.
2014-07-18 12:03:38 -07:00
Andrew Poelstra 5ca37d3614 Add README 2014-07-18 07:53:03 -07:00
Andrew Poelstra dc943d9a7e Add Travis support 2014-07-18 07:33:44 -07:00
Andrew Poelstra c9ad7c0b58 Initial commit, move into Cargo 2014-07-18 06:56:17 -07:00