c3dfc91032 test: Skip flaky p2p_invalid_messages test on macOS (Fabian Jahr)
Pull request description:
This mitigates https://github.com/bitcoin/bitcoin/issues/15400
I had a look into the issue today and this seems to be the best we can do given that the root causes some unexpected custom error code from the macOS kernel that python/asyncio doesn't know how to handle properly yet.
Top commit has no ACKs.
Tree-SHA512: 20a0551d45c405b6eb0ae58190b701c7026c52eff6c434bc678f723a4dabf0074e5b52a8bb3d51ee7132dc29419d1e67a24696761c444c62cd4d429ec768e67d
fa6f402bde Call node->initError instead of InitError from GUI code (Russell Yanofsky)
fad2502240 init: Use InitError for all errors in bitcoind/qt (MarcoFalke)
Pull request description:
Using the same InitError for startup error in the daemon and the gui makes it possible to run the tests with the gui again:
```sh
BITCOIND=bitcoin-qt ./test/functional/test_runner.py feature_includeconf feature_config_args
ACKs for top commit:
hebasto:
ACK fa6f402bde
ryanofsky:
utACK fa6f402bde. Only changes since last review are removing more includes and adding Node::initError method to avoid accessing node `InitError` function and global variables from GUI code.
Tree-SHA512: bd19e08dcea4019dfe40356bc5c63cb583cefed54b6c9dcfb82f1b5b00308d8e2b363549afcaea5e93bf83864dbe0917400c3b70f43a8a5bdff45c9cd34cc294
50cede3f5a [mempool] Allow one extra single-ancestor transaction per package (Matt Corallo)
Pull request description:
This implements the proposed policy change from [1], which allows
certain classes of contract protocols involving revocation
punishments to use CPFP. Note that some such use-cases may still
want some form of one-deep package relay, though even this alone
may greatly simplify some lightning fee negotiation.
[1] https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2018-November/016518.html
ACKs for top commit:
ajtowns:
ACK 50cede3f5a -- looked over code again, compared with previous commit, compiles, etc.
sdaftuar:
ACK 50cede3f5a
ryanofsky:
utACK 50cede3f5a. Changes since last review: adding EXTRA_DESCENDANT_TX_SIZE_LIMIT constant, changing max ancestor size from 1,000,000 to nLimitAncestorSize constant (101,000), fixing test comment and getting rid of unused test node.
Tree-SHA512: b052c2a0f384855572b4579310131897b612201214b5abbb225167224e4f550049e300b471dbf320928652571e92ca2d650050b7cf39ac92b3bc1d2bcd386c1c
bead32e31e Add release notes for DEFAULT_BLOOM change (Matt Corallo)
f27309f55c Move DEFAULT_PEERBLOOMFILTERS from validation.h to net_processing.h (Matt Corallo)
5efcb77283 Disable bloom filtering by default. (Matt Corallo)
Pull request description:
BIP 37 bloom filters have been well-known to be a significant DoS
target for some time. However, in order to provide continuity for
SPV clients relying on it, the NODE_BLOOM service flag was added,
and left as a default, to ensure sufficient nodes exist with such a
flag.
NODE_BLOOM is, at this point, well-established and, as long as
there exist 0.18 nodes with default config (which I'd anticipate
will be true for many years), will be available from some peers. By
that time, the continued slowdown of BIP 37-based filtering will
likely have rendered it useless (though this is already largely the
case). Further, BIP 37 was deliberately never updated to support
witness-based filtering as newer wallets are expected to migrate to
some yet-to-be-network-exposed filters.
ACKs for top commit:
jnewbery:
ACK bead32e31e
kallewoof:
ACK bead32e31e
Tree-SHA512: ecd901898e8efe1a7c82b471af0acc2373c2282ac633eb58d9aae7c35deda1999d0f79fb0485e6cecbda7246aeda00206cd82c7fa36866e2ac64705ba93f9390
e142ee03e7 doc: describe how to pass wildcard names to test runner (Jon Atack)
6a7a70b8cf test: enable passing wildcards with path to test runner (Jon Atack)
Pull request description:
Currently, passing wildcard testname args to the test runner from outside the test/functional/ directory does not work, even though developers expect it to. See these recent IRC discussions for more background: http://www.erisian.com.au/bitcoin-core-dev/log-2019-07-10.html#l-262 (lines 262 to 323) and http://www.erisian.com.au/bitcoin-core-dev/log-2019-07-11.html#l-134.
1. [BUGFIX] Enable passing wildcards with paths. Examples:
- `test/functional/test_runner.py test/functional/wallet*`
- `functional/test_runner.py functional/wallet*`
- `test/functional/test_runner.py ./test/functional/tool* test/functional/mempool*`
- A current limitation this PR does not change: 9 test files with arguments in their filename are not picked up by wildcard search.
2. [Docs] Describe how to pass wildcard names (multiple and with paths) to the test runner in test/README.md.
ACKs for top commit:
jnewbery:
tested ACK e142ee03e7
jachiang:
Tested ACK e142ee03e7. Thanks a lot for this fix!
MarcoFalke:
ACK e142ee03e7, fine with me
Tree-SHA512: cb3d994880cdc9b8918546b573a25faa5b4c7339826ac7cfe20f076aac6e731a34271609c0cf5a7ee5e4a2d5ae205298319d24bf36ef5b5d569a1a0c57883e54
fa89badf88 test: Require standard txs in regtest (MarcoFalke)
fa9b419160 test: Add test that mainnet requires standard txs (MarcoFalke)
fa613ca0a8 chainparams: Remove unused fMineBlocksOnDemand (MarcoFalke)
Pull request description:
I don't see a reason why regtest should allow non-standard txs, as it makes testing mainnet behaviour such as #15846 unnecessarily hard and unintuitive.
Of course, testnet policy remains unchanged to allow propagation of non-standard txs.
ACKs for top commit:
ajtowns:
ACK fa89badf88
Tree-SHA512: c4c675affb054868850bd2683aa07f4c741a448cbacb2ea8334191e105f426b0790fe6a468be61e9c5880d24154f7bf1c7075051697172dce92180c1bc3a1c90
8f250ab788 TEST: Replace hard-coded hex tx with classes (Steven Roose)
Pull request description:
Came across these breaking Elements.
ACKs for top commit:
MarcoFalke:
ACK 8f250ab788
instagibbs:
utACK 8f250ab788
Tree-SHA512: e8615dad4cda0beea4b0c7d4951a467fb9882a0a64d49c9b5ecf167369ea62a3fe5348e2401153162b0ccadecdb128492c94be36ebb881c3c42659626d86eda8
Currently, passing wildcard testname args to the test runner from outside the `test/functional/` directory does not work. See this recent IRC discussion for more background: http://www.erisian.com.au/bitcoin-core-dev/log-2019-07-10.html#l-262 (lines 262 to 323).
This small change enables passing multiple wildcards with paths, as long as the paths are coherent. Examples:
- test/functional/test_runner.py test/functional/wallet*
- functional/test_runner.py functional/wallet*
- test/functional/test_runner.py ./test/functional/tool* test/functional/mempool*
A current limitation that this PR does not change: 9 test files with arguments in their name are not picked up by wildcard search.
- Squashed commit: non-mutating version
- Squashed commit: minor code optimisation
e263a343d4 test: rpc_users: Make variable names more clear. (Carl Dong)
830dc2dd0f test: rpc_users: Also test rpcauth.py with specified password. (Carl Dong)
c73d871799 test: rpc_users: Add function for testing auth params. (Carl Dong)
604e2a997f test: rpc_users: Add function for auth'd requests. (Carl Dong)
Pull request description:
Fixes#14758
First two commits are tidy-ups which I feel are worthwhile as they are very straightforward, cut down the file by 50%, and made the final diff more minimal. Happy to squash after review.
ACKs for top commit:
laanwj:
ACK e263a343d4
Tree-SHA512: aa75c48570a87060238932d4c68e17234e158077f6195fb4917367e1ecc565e3cd8dd0ae51f9159ddd3d03742739680391bc1246454302db22d4a608c0633e80
0d101a340c test: Add test for maxtxfee option (MarcoFalke)
177550101b wallet: Remove unreachable code in CreateTransaction (MarcoFalke)
5c1b9714cb wallet: Fix -maxtxfee check by moving it to CWallet::CreateTransaction (João Barbosa)
Pull request description:
Follow up to #16257, this PR makes `bumpfee` aware of `-maxtxfee`.
It also prevents dangling locked unspents when calling `fundrawtransaction` - because the previous check was after `LockCoin`.
ACKs for top commit:
MarcoFalke:
re-ACK 0d101a340c, only change is small test fixup
Tree-SHA512: 3464b24ae7cd4e72ed41438c6661828ba1304af020f05da62720b23668ae734e16cf47c6d97e150cc84ef631ee099b16fc786c858f3d089905845437338fd512
This implements the proposed policy change from [1], which allows
certain classes of contract protocols involving revocation
punishments to use CPFP. Note that some such use-cases may still
want some form of one-deep package relay, though even this alone
may greatly simplify some lightning fee negotiation.
[1] https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2018-November/016518.html
7195fa792f test: Tool wallet test coverage for unexpected writes to wallet (Jon Atack)
3bf2b3a37b test: Split tool_wallet.py test into subtests (Jon Atack)
1eb13f09a9 test: Add log messages to test/functional/tool_wallet.py (Jon Atack)
Pull request description:
This pull request adds test coverage in `test/functional/tool_wallet.py` to reproduce unexpected writes to the wallet as described in https://github.com/bitcoin/bitcoin/issues/15608 and serve as a benchmark for fixing the issue:
- Wallet tool `info` unexpectedly writes to the wallet file if the wallet file permissions are read/write.
- Wallet tool `info` raises with "Error loading . Is wallet being used by another process?" if the wallet file permissions are read-only.
Goals:
1. Reproduce the reported issue, define the current unexpected behavior, and add test coverage to guide a future fix. Add debug-level logging for sanity checking and commented-out assertions to be uncommented when fixing the issue. Add the same coverage to the wallet tool create test and the getwalletinfo test as regression tests while fixing the issue.
2. Add info log messages as there are currently none in the test file.
3. Split the tests out to separate functions as per review feedback.
Thanks to Marco Falke for pointing me in the right direction.
ACKs for top commit:
laanwj:
code review ACK 7195fa792f
Tree-SHA512: 16a41cce989c8f819cf5b02c6cf8ea84653ede2738fb402f6c36cf4dc075b424dff3e2c73a1cfa1ec9c75f614675baecc71e588845a2596db06ba0957db2df7b
This commit adds test coverage in `test/functional/tool_wallet.py` to reproduce unexpected writes to the wallet as described in https://github.com/bitcoin/bitcoin/issues/15608:
- wallet tool `info` unexpectedly writes to the wallet file if the wallet file permissions are read/write.
- wallet tool `info` raises with "Error loading . Is wallet being used by another process?" if the wallet file permissions are read-only.
1. Reproduce the reported issue, define the current unexpected behavior, and add test coverage to guide a future fix in the form of commented-out assertions to be uncommented when testing/fixing.
2. Provisionally extend the same coverage to the wallet tool create test and the getwalletinfo test as regression tests while fixing the issue.
3. Add some logging for sanity checking.
------
Changes after rebase:
5. Make wallet_path an instance method instead of a function in tool_wallet.py as per Marco Falke review suggestion.
6. Assert wallet permissions instead of logging them in tool_wallet.py. This ran into an issue with Appveyor keeping permissions at 666 so allowed for 666 as a workaround.
7. Change the added logging from info to debug level.
8. More helpful assertions order in tool_wallet.py#assert_tool_output. This change makes #assert_tool_output raise "Error loading wallet.dat. Is wallet being used by another process?" rather than a less-helpful message when debugging the read-only wallet permissions issue.
91cc18f602 [docs] Add release notes for PR 15427 (John Newbery)
3b11420b3c [RPC] add new utxoupdatepsbt arguments to the CRPCCommand and CPRCConvertParam tables (John Newbery)
Pull request description:
The new `descriptors` argument was not added to the CRPCCommand and CPRCCvertParam tables, meaning that it couldn't be used with bitcoin-cli or named arguments.
Before this PR:
```
> bitcoin-cli utxoupdatepsbt 'cHNidP8BAFMCAAAAAYCdwVRx2X3o4KHx5tAMsN1ddp51MbfWsietjfMbl5HtAAAAAAD/////AQDh9QUAAAAAF6kUW+rtEOi4nk9rpw2F5XZl1dd8ehGHAAAAAAAAAA==' "[{\"desc\":\"sh(wpkh([bd50871a/0h/0h/0h]03895c66337b38699bfafff1084ad35bc347fac4f4e5e5fe5eb7dd81155280db53))\"}]"
error code: -3
error message:
Expected type array, got string
> bitcoin-cli --named utxoupdatepsbt psbt='cHNidP8BAFMCAAAAAYCdwVRx2X3o4KHx5tAMsN1ddp51MbfWsietjfMbl5HtAAAAAAD/////AQDh9QUAAAAAF6kUW+rtEOi4nk9rpw2F5XZl1dd8ehGHAAAAAAAAAA==' descriptors="[{\"desc\":\"sh(wpkh([bd50871a/0h/0h/0h]03895c66337b38699bfafff1084ad35bc347fac4f4e5e5fe5eb7dd81155280db53))\"}]"
error code: -8
error message:
Unknown named parameter descriptors
```
After this PR:
```
bitcoin-cli utxoupdatepsbt 'cHNidP8BAFMCAAAAAYCdwVRx2X3o4KHx5tAMsN1ddp51MbfWsietjfMbl5HtAAAAAAD/////AQDh9QUAAAAAF6kUW+rtEOi4nk9rpw2F5XZl1dd8ehGHAAAAAAAAAA==' "[{\"desc\":\"sh(wpkh([bd50871a/0h/0h/0h]03895c66337b38699bfafff1084ad35bc347fac4f4e5e5fe5eb7dd81155280db53))\"}]"
cHNidP8BAFMCAAAAAYCdwVRx2X3o4KHx5tAMsN1ddp51MbfWsietjfMbl5HtAAAAAAD/////AQDh9QUAAAAAF6kUW+rtEOi4nk9rpw2F5XZl1dd8ehGHAAAAAAAAAA==
bitcoin-cli --named utxoupdatepsbt psbt='cHNidP8BAFMCAAAAAYCdwVRx2X3o4KHx5tAMsN1ddp51MbfWsietjfMbl5HtAAAAAAD/////AQDh9QUAAAAAF6kUW+rtEOi4nk9rpw2F5XZl1dd8ehGHAAAAAAAAAA==' descriptors="[{\"desc\":\"sh(wpkh([bd50871a/0h/0h/0h]03895c66337b38699bfafff1084ad35bc347fac4f4e5e5fe5eb7dd81155280db53))\"}]"
cHNidP8BAFMCAAAAAYCdwVRx2X3o4KHx5tAMsN1ddp51MbfWsietjfMbl5HtAAAAAAD/////AQDh9QUAAAAAF6kUW+rtEOi4nk9rpw2F5XZl1dd8ehGHAAAAAAAAAA==
```
ACKs for top commit:
promag:
ACK 91cc18f.
fanquake:
re-ACK 91cc18f602
Tree-SHA512: 279b2339a5cac17e363002e4ab743e251d6757c904c89f1970575bdce18d4f63d5e13507e171bf2bdc1bf6dd457db345a4b11b15d4ff71b96c2fedc4ffe52b23
The new `descriptors` argument needs to be added to the Command and
ConvertParams tables to by usable as a named argument and by
bitcoin-cli.
Also update the test to use named arguments to test this.
fab0c820fa rpc: Clarify that block count means height excl genesis (MarcoFalke)
Pull request description:
There is a common misconception that the block count returned by the blockchain rpcs includes the genesis block. See for example the discussion in https://github.com/bitcoin/bitcoin/pull/16292#issuecomment-506303256.
However, it really returns the height, which is `0` for the genesis block.
So clarify that and also remove the misleading "longest blockchain" comment.
Finally, fix the wallet test that incorrectly used this rpc.
ACKs for top commit:
instagibbs:
utACK fab0c820fa
promag:
ACK fab0c82, sorry for the misconception.
Tree-SHA512: 0d087cbb628d3866352bca6420402f392e6a997e579941701a408a7fca355d84645045661f39b022e4479cc07f85a6cddaa9095b6fd9911b245692482420a5e4
8a6810d0d2 Add a 'logpath' field to getrpcinfo (darosior)
Pull request description:
as discussed in #15438
ACKs for top commit:
laanwj:
Tested ACK 8a6810d0d2
Tree-SHA512: 752c7d90f670677c8144efb338c5c97c2264f85f1e65e031fd5a44f04230b6eafbabd0f634db263eb42c25642ecc1c4b1b602d4735e3fab07ec00b566134ddab
01174596e6 signrawtransactionwithkey: report error when missing redeemScript/witnessScript param (Anthony Towns)
Pull request description:
Adding support for "witnessScript" as an alternative to "redeemScript" when using "signrawtransactionwithkey" meant that the `RPCTypeCheckObj()` call in `SignTransaction` can't error out just because either parameter is missing -- it's only a problem if both are missing, which isn't a state `RPCTypeCheckObj()` tests for. This results in the regression described in #16249. This patch adds some code to test for this case and give a similar error, namely:
error code: -8
error message:
Missing redeemScript/witnessScript
Fixes: #16249
ACKs for top commit:
meshcollider:
utACK 01174596e6
promag:
ACK 01174596e. Could also write test without `dict`/`del`:
Tree-SHA512: cf51346b7dea551b7f18f2a93c2a336a293b2535c62c03a5263cd2be8c58cf0cc302891da659c167e88ad1a68a756472c3c07e99f71627c61d32886fc5a3a353
26fe9b9909 Add support for descriptors to utxoupdatepsbt (Pieter Wuille)
3135c1a2d2 Abstract out UpdatePSBTOutput from FillPSBT (Pieter Wuille)
fb90ec3c33 Abstract out EvalDescriptorStringOrObject from scantxoutset (Pieter Wuille)
eaf4f88734 Abstract out IsSegWitOutput from utxoupdatepsbt (Pieter Wuille)
Pull request description:
This adds a descriptors argument to the `utxoupdatepsbt` RPC. This means:
* Input and output scripts and keys will be filled in when known.
* P2SH-witness inputs will be filled in from the UTXO set when a descriptor is provided that shows they're spending segwit outputs.
This also moves some (newly) shared code to separate functions: `UpdatePSBTOutput` (an analogue to `SignPSBTInput`), `IsSegWitOutput`, and `EvalDescriptorStringOrObject` (implementing the string or object notation parsing used in `scantxoutset`).
ACKs for top commit:
jnewbery:
utACK 26fe9b9909
laanwj:
utACK 26fe9b9909 (will hold merging until response to promag's comments)
promag:
ACK 26fe9b9, checked refactors and tests look comprehensive. Still missing a release note but can be added later.
Tree-SHA512: 1d833b7351b59d6c5ded6da399ff371a8a2a6ad04c0a8f90e6e46105dc737fa6f2740b1e5340280d59e01f42896c40b720c042f44417e38dfbee6477b894b245
276972cb95 wallet_bumpfee.py: Make sure coin selection produces change (Gregory Sanders)
Pull request description:
I was hitting the case where change-less transactions were being made.
ACKs for top commit:
ryanofsky:
utACK 276972cb95
Tree-SHA512: e2b7a50363daddd3ee749cacfc9d3d685a6c0c7e3e48118bb60131d205bf83ea06cdd66b69dfa3bd4dbb3bbf2b5b673d7225171486ae72fc762e5dabe2c01ef5
806b0052c3 [wallet] abort when attempting to fund a transaction above maxtxfee (Sjors Provoost)
Pull request description:
`FundTransaction` calls `GetMinimumFee` which, when the fee rate is absurdly high, quietly reduces the fee to `-maxtxfee`.
Becaue an absurdly high fee rate is usually the result of a fat finger, aborting seems safer behavior.
Before:
```
bitcoin-cli walletcreatefundedpsbt '[]' '[{"tb1q...": 0.01}]' 0 '{"feeRate": 10}' true
{
"psbt": "cHNidP8...gAA=",
"fee": 0.10000000,
"changepos": 1
}
```
After:
```
bitcoin-cli walletcreatefundedpsbt '[]' '[{"tb1q...": 0.01}]' 0 '{"feeRate": 10}' true
error code: -25
error message:
Fee exceeds maximum configured by -maxtxfee
```
QT still checks the max fee rate as expected:
<img width="566" alt="Schermafbeelding 2019-06-20 om 19 52 00" src="https://user-images.githubusercontent.com/10217/59888424-a2aa7100-9395-11e9-8ae6-8a3c1f7de585.png">
ACKs for top commit:
laanwj:
Code review ACK 806b0052c3
Tree-SHA512: bee95811711cdab100b614d2347921407af3b400aea613ca156953ed3f60b924ad29a1d335bd0e240c0b7c0fbb360226bab03294d226a5560cdf2a3f21e6d406
FundTransaction calls GetMinimumFee which, when the fee rate is absurdly high, quietly reduced the fee to -maxtxfee. Becaue an absurdly high fee rate is usually the result of a fat finger, aborting seems safer behavior.
71d0344cf2 docs: release note wording (Karl-Johan Alm)
3d2ff37913 wallet/rpc: use static help text (Karl-Johan Alm)
53c3c1ea9e wallet/rpc/getbalances: add entry for 'mine.used' balance in results (Karl-Johan Alm)
Pull request description:
This addresses a few remaining issues pointed out in #13756:
* First commit addresses https://github.com/bitcoin/bitcoin/pull/13756#discussion_r284907468
* Second commit addresses https://github.com/bitcoin/bitcoin/pull/13756#discussion_r294868973
Ping jnewbery and achow101 as they pointed out these issues.
ACKs for commit 71d034:
jnewbery:
ACK 71d0344cf2
meshcollider:
re-utACK 71d0344cf2
Tree-SHA512: 5e28822af0574ad07dbbed21aa2fe7866bf5770b4c0a1c150ad0da8af3152bcfb7170330a7497fa500326c594740ecf63733cf58325821e2811d7b911d5783a0
a49503402b Make and get the multisig redeemscript and destination in one function instead of two (Andrew Chow)
Pull request description:
`CreateMultisigRedeemscript()` is changed to `AddAndGetMultisigDestination()` so that the process of constructing the redeemScript and then getting the `CTxDestination` are done in the same function. This allows that function to see what the keys in the multisig are so that the correct address type is returned from `AddAndGetDestinationForScript()`.
This only effects the `createmultisig` and `addmultisigaddress` RPCs and does not change signing logic as #16022 does.
Alternative to #16022 and #16012Fixes#16011
ACKs for commit a49503:
Tree-SHA512: 5b0154a714deea3b2cc3a54beb420c95eeeacf4ca30c40ca80940d9d640f8b03611b0fc14c2f0710bfd8a79e8d27ad7d9ae380b4b83d52b40ab201624f2a63f0
fa7dd88b71 test: Add test for unknown args (MarcoFalke)
Pull request description:
Currently uncovered.
Further reading:
* https://marcofalke.github.io/btc_cov/total.coverage/src/util/system.cpp.gcov.html
* Fail on unknown config file options #15021
ACKs for commit fa7dd8:
promag:
ACK fa7dd88b71, tests looks good to me.
hebasto:
ACK fa7dd88b71, I have tested the code.
Tree-SHA512: 86ab370ce8e85925f945a52e81457b5678d71bbabcef01205a97782b780003f363552e0bad1ff678bccc784f82c6b511c3b88de3f8f25f62b0b713c387950564
Instead of creating a redeemScript with CreateMultisigRedeemscript and
then getting the destination with AddAndGetDestinationForScript, do
both in the same function.
CreateMultisigRedeemscript is changed to AddAndGetMultisigDestination.
It creates the redeemScript and returns it via an output parameter. Then
it calls AddAndGetDestinationForScript to add the destination to the
keystore and get the proper destination.
This allows us to inspect the public keys in the redeemScript before creating
the destination so that the correct destination is used when uncompressed
pubkeys are in the multisig.
e91f0a7af2 doc: Remove travis badge from readme (MarcoFalke)
Pull request description:
The readme(s) are shipped in the released source-code archive, in which case the travis badge is useless since it doesn't link to the travis result of the correct commit/tag/branch. GitHub embeds the correct links for each tag or commit that ci ran on, so we don't need this link in the readme.
ACKs for commit e91f0a:
hebasto:
ACK e91f0a7af2
Tree-SHA512: 860435a58b38a9bd0bc62a1e74b3a63c138c9a2f09008a090d5ecc7fd86fa908d2e5eda41d16606507a238d9488fa5323405364a9556b670684a2e4838aead2d
We should eventually request a transaction from all peers that announce
it (assuming we never receive it).
We should prefer requesting from outbound peers over inbound peers.
Enforce the max tx requests in flight, and the eventual expiry of those
requests.
Test author: Suhas Daftuar <sdaftuar@gmail.com>
Adjusted by: MarcoFalke
5ebc6b0eb2 bitcoind: update -avoidpartialspends description to account for auto-enable for avoid_reuse wallets (Karl-Johan Alm)
ada258f8c8 doc: release notes for avoid_reuse (Karl-Johan Alm)
27669551da wallet: enable avoid_partial_spends by default if avoid_reuse is set (Karl-Johan Alm)
8f2e208f7c test: add test for avoidreuse feature (Karl-Johan Alm)
0bdfbd34cf wallet/rpc: add 'avoid_reuse' option to RPC commands (Karl-Johan Alm)
f904723e0d wallet/rpc: add setwalletflag RPC and MUTABLE_WALLET_FLAGS (Karl-Johan Alm)
8247a0da3a wallet: enable avoid_reuse feature (Karl-Johan Alm)
eec15662fa wallet: avoid reuse flags (Karl-Johan Alm)
58928098c2 wallet: make IsWalletFlagSet() const (Karl-Johan Alm)
129a5bafd9 wallet: rename g_known_wallet_flags constant to KNOWN_WALLET_FLAGS (Karl-Johan Alm)
Pull request description:
Add a new wallet flag called `avoid_reuse` which, when enabled, will keep track of when a specific destination has been spent from, and will actively "blacklist" any new UTXOs which send to an already-spent-from destination.
This improves privacy, as a payer could otherwise begin tracking a payee's wallet by regularly peppering a known UTXO with dust outputs, which would then be scooped up and used in payments by the payee, allowing the payer to map out (1) the inputs owned by the payee and (2) the destinations to which the payee is making payments.
This replaces #10386 and together with the (now merged) #12257 it addresses #10065 in full. The concerns raised in https://github.com/bitcoin/bitcoin/pull/10386#issuecomment-302361381 are also addressed due to #12257.
~~Note: this builds on top of #15780.~~ (merged)
ACKs for commit 5ebc6b:
jnewbery:
ACK 5ebc6b0eb
laanwj:
Concept and code-review ACK 5ebc6b0eb2
meshcollider:
Code review ACK 5ebc6b0eb2
achow101:
ACK 5ebc6b0eb2 modulo above nits
Tree-SHA512: fdef45826af544cbbb45634ac367852cc467ec87081d86d08b53ca849e588617e9a0a255b7e7bb28692d15332de58d6c3d274ac003355220e4213d7d9070742e
faa2a47cd7 logging: Add threadsafety comments (MarcoFalke)
0b282f9b00 Log early messages with -printtoconsole (Anthony Towns)
412987430c Replace OpenDebugLog() with StartLogging() (Anthony Towns)
Pull request description:
Early log messages are dropped on the floor and they'd never make it to the console or debug log. This can be tested by running the test included in this pull request without re-compiling the `bitcoind`.
Fix that by buffering early messages and flushing them as soon as all logging options have been initialized and logging has been started.
This pull request is identical to "Log early messages with -printtoconsole" (#13088) by **ajtowns**, with the following changes:
* Rebased
* Added docstrings for `m_buffering` and `StartLogging`
* Switch `CCriticalSection` (aka `RecursiveMutex`) to just `Mutex` in the last commit
* Added tests
Fixes#16098Fixes#13157Closes#13088
ACKs for commit faa2a4:
ajtowns:
utACK faa2a47cd7
hebasto:
ACK faa2a47cd7
kristapsk:
ACK faa2a47cd7 (ran added functional test before / after recompiling, didn't do additional testing)
Tree-SHA512: 685e2882642fe2a43ce171d42862582dadb840d03cda8236a994322c389ca2a1f3f431b179b2726c155c61793543bb340c568a5455d97f8b83bc7d307a85d387
8053e5cdad Remove -mempoolreplacement to prevent needless block prop slowness. (Matt Corallo)
Pull request description:
At this point there is no reasonable excuse to disable opt-in RBF,
and, unlike when this option was added, there are now significant
issues created when disabling it (in the form of compact block
reconstruction failures). Further, it breaks a lot of modern wallet
behavior.
This removes an option that is:
* (a) only useful when a large portion of (other) miners enforce it as well
* (b) is detrimental to everyone (income for miners, RBF notifications for others) who uses it individually otherwise
* (c) is effectively unused
* (d) is often confused with disabling RBF (rather than just remaining stubbornly unaware of it while the rest of the network lets it through)
ACKs for commit 8053e5:
practicalswift:
utACK 8053e5cdad
promag:
Deprecation would save from unlikely rantings, still ACK 8053e5c.
jtimon:
utACK 8053e5cdad
ajtowns:
ACK 8053e5cdad -- quick code review, checked tests work
MarcoFalke:
ACK 8053e5cdad
Tree-SHA512: 01aee8905b2487fc38a3a86649d422d2d2345bc60f878889ebda4b8680783e1f1a97c2000c27ef086719501be2abc2911b2039a259a5e5c04f3b24ff02b0427e
fa499b5f02 rpc: bugfix: Properly use iswitness in converttopsbt (MarcoFalke)
fa5c5cd141 rpc: Switch touched RPCs to IsValidNumArgs (MarcoFalke)
Pull request description:
When a serialized transaction has inputs, there is no risk in only trying to deserialize it with witness allowed. (This is how all transactions from p2p are deserialized.) In fact, it would avoid a common issue where a transaction with inputs can be deserialized in two ways:
* Fixes#12989
* Fixes#15872
* Fixes#15701
* Fixes#13738
* ...
When a serialized transaction has no inputs, there is no risk in only trying to deserialze it with witness disallowed. (A transaction without inputs can't have corresponding witness data)
ACKs for commit fa499b:
meshcollider:
utACK fa499b5f02
ryanofsky:
utACK fa499b5f02. Changes since last review: consolidating commits and making iswitness documentation the same across methods.
PastaPastaPasta:
utACK fa499b5f02
Tree-SHA512: a64423a3131f3f0222a40da557c8b590c9ff01b45bcd40796f77a1a64ae74c6680a6be9d01ece95c492dfbcc7e2810409d2c2b336c2894af00bb213972fc85c6
fa1d766717 tests: Make msg_block a witness block (MarcoFalke)
fa52eb55c9 test: Remove True argument to CBlock::serialize (MarcoFalke)
Pull request description:
Unnamed arguments are confusing as to what they mean without looking up the function signature.
Since segwit is active by default in regtest, and all blocks are serialized with witness (#15664), remove the argument `with_witness=True` from all calls to `CBlock::serialize` and `BlockTransactions::serialize`.
ACKs for commit fa1d76:
laanwj:
code-review ACK fa1d766717
Tree-SHA512: 2c550646f99c9ca86a223ca988c61a730f5e6646807adeaa7174fb2424a32cea3fef8bcd3e0b12e162e7ff192877d0c02fd0654df6ee1a9b821b065707c2dcbc
At this point there is no reasonable excuse to disable opt-in RBF,
and, unlike when this option was added, there are now significant
issues created when disabling it (in the form of compact block
reconstruction failures). Further, it breaks a lot of modern wallet
behavior.
BIP 37 bloom filters have been well-known to be a significant DoS
target for some time. However, in order to provide continuity for
SPV clients relying on it, the NODE_BLOOM service flag was added,
and left as a default, to ensure sufficient nodes exist with such a
flag.
NODE_BLOOM is, at this point, well-established and, as long as
there exist 0.18 nodes with default config (which I'd anticipate
will be true for many years), will be available from some peers. By
that time, the continued slowdown of BIP 37-based filtering will
likely have rendered it useless (though this is already largely the
case). Further, BIP 37 was deliberately never updated to support
witness-based filtering as newer wallets are expected to migrate to
some yet-to-be-network-exposed filters.
CVE-2018-17144 and CVE-2012-2459 are only partially tested for regression.
- CVE-2018-17144 is not tested for the inflation bug.
- CVE-2012-2459 is only tested for the mutated block being rejected, not
for the original block being accepted afterwards.
This commit fixes that limitation.
Also added functional test for CVE-2010-5137.
This commit adds comments referencing multiple CVEs both in production and test code.
CVEs covered in this commit:
CVE-2010-5137
CVE-2010-5139
CVE-2010-5141
CVE-2012-1909
CVE-2012-2459
CVE-2012-3789
CVE-2018-17144
fa47330397 test: Speed up cache creation (MarcoFalke)
fa6ad7a5ec test: Bump MAX_NODES to 12 (MarcoFalke)
Pull request description:
When testing a combination of settings that affect the datadir (e.g. prune, blockfilter, ...) we may need a lot of datadirs.
Bump the maximum number of nodes proactively from 8 to 12, so that caches get populated with 12 node dirs, as opposed to 8.
Also, add an assert that the list of deterministic keys is exactly the number of max nodes (and not more than that.
Also, create the cache faster.
ACKs for commit fa4733:
laanwj:
utACK fa47330397
Tree-SHA512: 9803c765ed52d344102f5a3bce57b05d88a7429dcb05ed66ed6c881fda8d87c2834d02d21b95fe9f39c0efe3b8527e13cf94f006588cde22e8c2cd50b2d517a6
0784af16ef remove parameters -addresstype=legacy in rpc_rawtransaction test (LongShao007)
a65dafa8f1 replace tx hash with txid in test rawtransaction (LongShao007)
Pull request description:
The transaction hash is different from txid for witness transactions, so we should use txid instead of hash.
ACKs for commit 0784af:
Tree-SHA512: 98b699eb5f25c3a603b11eb7072efe9bc69c0c0ecc7f996405de31bc45d92105970e09fd8e4f75b42a46498817f596d36d9b28eae7d24e63a4f2f2abfcee0eab
fa2b52af32 Disallow extended encoding for non-witness transactions (take 3) (MarcoFalke)
Pull request description:
(previous title "p2p: Disallow extended encoding for non-witness transactions (take 3)")
Remote peers can send us illegally encoded txs and thus have us write to stderr. Fix that by not writing to stderr.
This is a follow up to the previous (incomplete) attempts at this:
* Disallow extended encoding for non-witness transactions #14039
* Add test for superfluous witness record in deserialization #15893
ACKs for commit fa2b52:
laanwj:
utACK fa2b52af32
ryanofsky:
utACK fa2b52af32. Would change title to something like "Avoid logging transaction decode errors to stderr" instead of "Disallow extended encoding for non-witness transactions." The current title is confusing because this PR isn't really allowing or disallowing anything, just logging the condition differently. "Disallow" also seems to contradict the "Allow exceptions from..." comments in the actual code.
Tree-SHA512: c66990e69b432d00dc1c5510bf976a1188664d0890a32d1e5c6459094e7e27da82a5d227627afcbc203676f5540eec74b7d9b1d71d2c62d3b2069e1781824b4d
fa8ced32a6 doc: Mention blocksonly in reduce-traffic.md, unhide option (MarcoFalke)
fa320de79f test: Add test for p2p_blocksonly (MarcoFalke)
fa3872e7b4 test: Format predicate source as multiline on error (MarcoFalke)
fa1dce7329 net: Rename ::fRelayTxes to ::g_relay_txes (MarcoFalke)
Pull request description:
This is de-facto no longer hidden
ACKs for commit fa8ced:
jamesob:
utACK fa8ced32a6
Tree-SHA512: 474fbdee6cbd035ed9068a066b6056c1f909ec7520be0417820fcd1672ab3069b53f55c5147968978d9258fd3a3933fe1a9ef8e4f6e14fb6ebbd79701a0a1245
662d1171d9 Add option to create an encrypted wallet (Andrew Chow)
Pull request description:
This PR adds a new `passphrase` argument to `createwallet` which will create a wallet that is encrypted with that passphrase.
This is built on #15226 because it needs to first create an empty wallet, then encrypt the empty wallet and generate new keys that have only been stored in an encrypted state.
ACKs for commit 662d11:
laanwj:
utACK 662d1171d9
jnewbery:
Looks great. utACK 662d1171d9
Tree-SHA512: a53fc9a0f341eaec1614eb69abcf2d48eb4394bc89041ab69bfc05a63436ed37c65ad586c07fd37dc258ac7c7d5e4f7f93b4191407f5824bbf063b4c50894c4a
fa7e311e16 [doc] rpcwallet: Only fail rescan when blocks have been pruned (MarcoFalke)
aaaa57c2aa scripted-diff: Bump copyright headers in wallet (MarcoFalke)
faf3729242 wallet: Only fail rescan when blocks have actually been pruned (MarcoFalke)
Pull request description:
This brings the behaviour of the import* calls closer to importmulti. After this change, the difference between importmulti and the other import* calls is
* that in importmulti you can "opt-out" of scanning early blocks by setting a later timestamp.
* that in importmulti the wallet will successfully import the data, but fail to rescan. Whereas in the other calls, the wallet will abort before importing the data.
ACKs for commit fa7e31:
promag:
utACK fa7e311e16.
jnewbery:
utACK fa7e311e16
Tree-SHA512: a57d52ffea94b64e0eb9b5d3a7a63031325833908297dd14eb0c5251ffea3b2113b131003f1db4e9599e014369165a57f107a7150bb65e4c791e5fe742f33cb8
a407b6fdf3 [tests] Make random seed logged and settable (John Newbery)
Pull request description:
This allows tests which use randomness to be reproducibly run on failure.
ACKs for commit a407b6:
jonatack:
re-ACK a407b6fdf3
jb55:
great! utACK a407b6fdf3
Tree-SHA512: e1e89e6e76d11ddec71a8f0f077227e4b46303f80461b170900d3f95d4dcc4187b0d1decfd63562ea970aaaf530ef032a3e64ed1669aac29033d95161855fda3
This adds a descriptors argument to the utxoupdatepsbt RPC. This means:
* Input and output scripts and keys will be filled in when known
* P2SH-witness outputs will be filled in from the UTXO set when a descriptor
is provided to show they're segwit outputs.
d20d756752 rpc: faster getblockstats using BlockUndo data (Felix Weis)
Pull request description:
Using undo data for a block (rev?????.dat) we can retrieve value information about prevouts and calculate the final transaction fee (rate). This approach is about 80x faster, drops the requirement for `-txindex`, and works for all non-pruned blocks.
```
# 2018-11-25T16:36:19Z Bitcoin Core version v0.17.99.0-edc715240-dirty (release build)
seq 550100 550200 0.00s user 0.00s system 62% cpu 0.004 total
xargs -n1 src/bitcoin-cli getblockstats 0.21s user 0.19s system 17% cpu 2.302 total
# 2018-11-25T16:39:17Z Bitcoin Core version v0.17.0 (release build)
seq 550100 550200 0.00s user 0.00s system 87% cpu 0.002 total
xargs -n1 src/bitcoin-cli getblockstats 0.24s user 0.22s system 0% cpu 3:19.42 total
```
ACKs for commit d20d75:
MarcoFalke:
re-utACK d20d756752
Tree-SHA512: 5babc3eb8d2fee2cb23dc12f522656b80737a540cbf2b13390a8f388304c46c064cca76f896b46a6e2abae8cc582d28e1ab20dd4bb17ad6142f20630c2d30c54
Using undo data for a block (rev?????.dat) we can retrieve value information about prevouts and calculate the final transaction fee (rate). This approach is about 80x faster, drops the requirement for -txindex, and works for all non-pruned blocks.
510c6532ba Extract ParseDescriptorRange (Ben Woosley)
Pull request description:
So as to be consistently informative when the checks fail, and
to protect against unintentional divergence among the checks.
ACKs for commit 510c65:
meshcollider:
Oh apologies, yes. Thanks :) utACK 510c6532ba
MarcoFalke:
utACK 510c6532ba
sipa:
utACK 510c6532ba
Tree-SHA512: b1f0792bfaa163890a20654a0fc2c4c4a996659916bf5f4a495662436b39326692a1a0c825caafd859e48c05f5dd1865c4f7c28092be5074edda3c94f94f9f8b
This diff has been generated with the following script, but is better
reviewed without looking at the script.
# -BEGIN VERIFY SCRIPT-
echo "Use msg_witness_block everywhere, except for tests that require msg_block"
# This could be a separate commit, but it is combined with the
# following scripts to reduce the overall diff
sed -i -e 's/msg_block/msg_witness_block/g' ./test/functional/{feature_assumevalid,feature_cltv,feature_dersig,feature_versionbits_warning,p2p_fingerprint,p2p_sendheaders,p2p_unrequested_blocks,example_test,rpc_blockchain}.py
echo "Rename msg_block to msg_no_witness_block"
# Rename msg_block to msg_no_witness_block in all tests (not the
# framework)
sed -i -e 's/msg_block/msg_no_witness_block/g' $(git grep -l msg_block ./test/functional/*.py)
# Derive msg_no_witness_block from msg_block
# Make msg_block a witness block in messages.py
patch -p1 --fuzz 0 << EOF
diff --git a/test/functional/test_framework/messages.py b/test/functional/test_framework/messages.py
index 00190e4cbd..e454ed5987 100755
--- a/test/functional/test_framework/messages.py
+++ b/test/functional/test_framework/messages.py
@@ -1133 +1133 @@ class msg_block:
- return self.block.serialize(with_witness=False)
+ return self.block.serialize()
@@ -1155 +1155 @@ class msg_generic:
-class msg_witness_block(msg_block):
+class msg_no_witness_block(msg_block):
@@ -1158,2 +1158 @@ class msg_witness_block(msg_block):
- r = self.block.serialize()
- return r
+ return self.block.serialize(with_witness=False)
@@ -1445 +1444 @@ class msg_blocktxn:
- r += self.block_transactions.serialize(with_witness=False)
+ r += self.block_transactions.serialize()
@@ -1452 +1451 @@ class msg_blocktxn:
-class msg_witness_blocktxn(msg_blocktxn):
+class msg_no_witness_blocktxn(msg_blocktxn):
@@ -1456,3 +1455 @@ class msg_witness_blocktxn(msg_blocktxn):
- r = b""
- r += self.block_transactions.serialize()
- return r
+ return self.block_transactions.serialize(with_witness=False)
EOF
# Conclude rename of msg_block to msg_no_witness_block
sed -i -e 's/msg_witness_block/msg_block/g' $(git grep -l msg_witness_block)
# -END VERIFY SCRIPT-
Unnamed arguments are confusing as to what they mean without looking up
the function signature.
Since segwit is active by default in regtest, and all blocks are
serialized with witness (#15664, c459c5f), remove the argument
`with_witness=True` from all calls to `CBlock::serialize` and
`BlockTransactions::serialize`.
This diff has been created with a script, but is better reviewed without
a scripted diff.
sed -i --regexp-extended -e 's/block(_?[2a-z]*)\.serialize\([a-z_]*=?True/block\1.serialize(/g' $(git grep -l serialize ./test)
7b29ec277b [tests] Comment for why logging config is set as command-line args. (John Newbery)
ba534ccd56 [tests] log thread names by default in functional tests (John Newbery)
Pull request description:
More detailed logs are better
ACKs for commit 7b29ec:
jamesob:
utACK 7b29ec277b
Tree-SHA512: 327cfedb7b7bf32f7ce1e2de5f70c7092041a8e868e14285a79176277c6cf47ebea27027f68787332f8ad21c7f64d2640dd21813eda5b2bd0e5208a65364a879
facfb4111d rpc: Deprecate getunconfirmedbalance and getwalletinfo balances (MarcoFalke)
999931cf8f rpc: Add getbalances RPC (MarcoFalke)
fad13e925e rpcwallet: Make helper methods const on CWallet (MarcoFalke)
fad40ec915 wallet: Use IsValidNumArgs in getwalletinfo rpc (MarcoFalke)
Pull request description:
This exposes the `CWallet::GetBalance()` struct over RPC.
In the future, incorrectly named rpcs such as `getunconfirmedbalance` or rpcs redundant to this such as `getbalance` could be removed.
ACKs for commit facfb4:
jnewbery:
utACK facfb4111d
Tree-SHA512: 1f54fedce55df9a8ea82d2b6265354b39a956072621876ebaee2355aac0e23c7b64340c3279502415598c095858529e18b50789be956250aafda1cd3a8d948a5
0ff1c2a838 Separate reason for premature spends (coinbase/locktime) (Suhas Daftuar)
54470e767b Assert validation reasons are contextually correct (Suhas Daftuar)
2120c31521 [refactor] Update some comments in validation.cpp as we arent doing DoS there (Matt Corallo)
12dbdd7a41 [refactor] Drop unused state.DoS(), state.GetDoS(), state.CorruptionPossible() (Matt Corallo)
aa502b88d1 scripted-diff: Remove DoS calls to CValidationState (Matt Corallo)
7721ad64f4 [refactor] Prep for scripted-diff by removing some \ns which annoy sed. (Matt Corallo)
5e78c5734b Allow use of state.Invalid() for all reasons (Matt Corallo)
6b34bc6b6f Fix handling of invalid headers (Suhas Daftuar)
ef54b486d5 [refactor] Use Reasons directly instead of DoS codes (Matt Corallo)
9ab2a0412e CorruptionPossible -> BLOCK_MUTATED (Matt Corallo)
6e55b292b0 CorruptionPossible -> TX_WITNESS_MUTATED (Matt Corallo)
7df16e70e6 LookupBlockIndex -> CACHED_INVALID (Matt Corallo)
c8b0d22698 [refactor] Drop redundant nDoS, corruptionPossible, SetCorruptionPossible (Matt Corallo)
34477ccd39 [refactor] Add useful-for-dos "reason" field to CValidationState (Matt Corallo)
6a7f8777a0 Ban all peers for all block script failures (Suhas Daftuar)
7b999103e2 Clean up banning levels (Matt Corallo)
b8b4c80146 [refactor] drop IsInvalid(nDoSOut) (Matt Corallo)
8818729013 [refactor] Refactor misbehavior ban decisions to MaybePunishNode() (Matt Corallo)
00e11e61c0 [refactor] rename stateDummy -> orphan_state (Matt Corallo)
f34fa719cf Drop obsolete sigops comment (Matt Corallo)
Pull request description:
This is a rebase of #11639 with some fixes for the last few comments which were not yet addressed.
The original PR text, with some strikethroughs of text that is no longer correct:
> This cleans up an old main-carryover - it made sense that main could decide what DoS scores to assign things because the DoS scores were handled in a different part of main, but now validation is telling net_processing what DoS scores to assign to different things, which is utter nonsense. Instead, we replace CValidationState's nDoS and CorruptionPossible with a general ValidationInvalidReason, which net_processing can handle as it sees fit. I keep the behavior changes here to a minimum, but in the future we can utilize these changes for other smarter behavior, such as disconnecting/preferring to rotate outbound peers based on them providing things which are invalid due to SOFT_FORK because we shouldn't ban for such cases.
>
> This is somewhat complementary with, though obviously conflicts heavily with #11523, which added enums in place of DoS scores, as well as a few other cleanups (which are still relevant).
>
> Compared with previous bans, the following changes are made:
>
> Txn with empty vin/vout or null prevouts move from 10 DoS
> points to 100.
> Loose transactions with a dependency loop now result in a ban
> instead of 10 DoS points.
> ~~BIP68-violation no longer results in a ban as it is SOFT_FORK.~~
> ~~Non-SegWit SigOp violation no longer results in a ban as it
> considers P2SH sigops and is thus SOFT_FORK.~~
> ~~Any script violation in a block no longer results in a ban as
> it may be the result of a SOFT_FORK. This should likely be
> fixed in the future by differentiating between them.~~
> Proof of work failure moves from 50 DoS points to a ban.
> Blocks with timestamps under MTP now result in a ban, blocks
> too far in the future continue to not result in a ban.
> Inclusion of non-final transactions in a block now results in a
> ban instead of 10 DoS points.
Note: The change to ban all peers for consensus violations is actually NOT the change I'd like to make -- I'd prefer to only ban outbound peers in those situations. The current behavior is a bit of a mess, however, and so in the interests of advancing this PR I tried to keep the changes to a minimum. I plan to revisit the behavior in a followup PR.
EDIT: One reviewer suggested I add some additional context for this PR:
> The goal of this work was to make net_processing aware of the actual reasons for validation failures, rather than just deal with opaque numbers instructing it to do something.
>
> In the future, I'd like to make it so that we use more context to decide how to punish a peer. One example is to differentiate inbound and outbound peer misbehaviors. Another potential example is if we'd treat RECENT_CONSENSUS_CHANGE failures differently (ie after the next consensus change is implemented), and perhaps again we'd want to treat some peers differently than others.
ACKs for commit 0ff1c2:
jnewbery:
utACK 0ff1c2a838
ryanofsky:
utACK 0ff1c2a838. Only change is dropping the first commit (f3883a321bf4ab289edcd9754b12cae3a648b175), and dropping the temporary `assert(level == GetDoS())` that was in 35ee77f2832eaffce30042e00785c310c5540cdc (now c8b0d22698)
Tree-SHA512: e915a411100876398af5463d0a885920e44d473467bb6af991ef2e8f2681db6c1209bb60f848bd154be72d460f039b5653df20a6840352c5f7ea5486d9f777a3
This is a first step towards cleaning up our DoS interface - make
validation return *why* something is invalid, and let net_processing
figure out what that implies in terms of banning/disconnection/etc.
Behavior change: peers will now be banned for providing blocks
with premature coinbase spends.
Co-authored-by: Anthony Towns <aj@erisian.com.au>
Suhas Daftuar <sdaftuar@gmail.com>
Compared with previous bans, the following changes are made:
* Txn with empty vin/vout or null prevouts move from 10 DoS
points to 100.
* Loose transactions with a dependency loop now result in a ban
instead of 10 DoS points.
* Many pre-segwit soft-fork errors now result in a ban.
Note: Transactions that violate soft-fork script flags since P2SH do not generally
result in a ban. Also, banning behavior for invalid blocks is dependent on
whether the node is validating with multiple script check threads, due to a long-
standing bug. That inconsistency is still present after this commit.
* Proof of work failure moves from 50 DoS points to a ban.
* Blocks with timestamps under MTP now result in a ban, blocks
too far in the future continue to *not* result in a ban.
* Inclusion of non-final transactions in a block now results in a
ban instead of 10 DoS points.
Co-authored-by: Anthony Towns <aj@erisian.com.au>
effe81f750 Move g_is_mempool_loaded into CTxMemPool::m_is_loaded (Ben Woosley)
bb8ae2c419 rpc: Expose g_is_mempool_loaded via getmempoolinfo and /rest/mempool/info.json (Ben Woosley)
Pull request description:
And use it to fix a race condition in mempool_persist.py:
https://travis-ci.org/Empact/bitcoin/jobs/487577243
Since e.g. getrawmempool returns errors based on this status, this
enables users to test it for readiness.
Fixes#12863
ACKs for commit effe81:
MarcoFalke:
utACK effe81f750
jnewbery:
utACK effe81f750
Tree-SHA512: 74328b0c17a97efb8a000d4ee49b9a673c2b6dde7ea30c43a6a2eff961a233351c9471f9a42344412135786c02bdf2ee1b2526651bb8fed68bd94d2120c4ef86
fa90a89eee [test] combine_logs: append node stderr and stdout if it exists (MarcoFalke)
Pull request description:
See issue:
* tests: bitcoind stdout and error should be passed to the logger #13519
ACKs for commit fa90a8:
laanwj:
utACK fa90a89eee
Tree-SHA512: 39c4596e2e133c9011ab01bc4dc24e884d0a8cce7a67d3765f17c288d3ffbd438e1ff6016d0f817a981b27fce17fa77a1ff56787ddb1ea55123ce9ecffb44c08
fa79a783d6 test: Add reorg test to wallet_balance (MarcoFalke)
fad03cd046 test: Check that wallet txs not in the mempool are untrusted (MarcoFalke)
fa195315e6 test: Add getunconfirmedbalance test with conflicts (MarcoFalke)
fa464e8211 test: Add wallet_balance test for watchonly (MarcoFalke)
Pull request description:
Second commit can be reviewed with `--ignore-all-space`
ACKs for commit fa79a7:
jnewbery:
utACK fa79a783d6
Tree-SHA512: ec4919a3c93b6dcb35d58e7c65bdffe7f4c8cb87b9287f3679631c1823ef5bd72789f233def94e60c1ab332711601751645566f5997ce250af55b328ed60e917
9f9db39041 QA/mininode: Send all headers upfront in send_blocks_and_test to avoid sending an unconnected one (Luke Dashjr)
Pull request description:
While this doesn't currently trigger any problems, the network protocol does expect headers to be sent connectable in normal circumstances, and if too many are sent out of order will disconnect the peer.
ACKs for commit 9f9db3:
Tree-SHA512: 25b88718e4ba3d31aed2de7ece23fab9a0737fd6536c5e618ea8eb5a3a217dab0dffaebc4892df7993bcea7efb7c4fb5085fabebe99535b8f7fdde3c19df54ff
c634b1e20 [POLICY] Make sending to future native witness outputs standard (Pieter Wuille)
Pull request description:
As discussed in the April 18 2019 IRC meeting.
This makes sending to future Segwit versions via native outputs (bech32) standard for relay, mempool acceptance, and mining. The reasons are:
* This may interfere with smooth adoption of future segwit versions, if they're defined (by the sender wallet/node).
* It violates BIP173 ("Version 0 witness addresses are always 42 or 62 characters, but implementations MUST allow the use of any version."), though admittedly this code was written before BIP173.
* It doesn't protect much, as P2SH-embedded segwit cannot be filtered in this way.
* As a general policy, the sender shouldn't care what the receiver likes his outputs to be.
Note that _spending_ such outputs (including P2SH-embedded ones) remains nonstandard, as that is actually required for softfork safety.
ACKs for commit c634b1:
MarcoFalke:
utACK c634b1e207
harding:
Tested ACK c634b1e207
meshcollider:
utACK c634b1e207
Tree-SHA512: e37168a1be9f445a04d4280593f0a92bdae33eee00ecd803d5eb16acb5c9cfc0f1f0a1dfbd5a0cc73da2c9928ec11cbdac7911513a78f85b789ae0d00e1b5962
a014373d81 QA: Avoid re-reading config.ini unnecessarily (Luke Dashjr)
Pull request description:
BitcoinTestFramework.main already loads and stores config.ini on the object itself; just access that instead of re-reading the file to check for features
ACKs for commit a01437:
practicalswift:
utACK a014373d81
hebasto:
utACK a014373d81
Tree-SHA512: 36e3dda36cf4fae243feb1655da2891d1b78c86319be9bd9809c20054fa0cb75749370b05aa9d589a4dcab6322d8cdf4e874c5175144ed23ba63b2ed338538ca
BitcoinTestFramework.main already loads and stores config.ini on the object itself; just access that instead of re-reading the file to check for features
c87fc71f7e Bugfix: test/functional/rpc_psbt: Correct test description comment (Luke Dashjr)
097c4aa379 Bugfix: test/functional/rpc_psbt: Remove check for specific error message that depends on uncertain assumptions (Luke Dashjr)
Pull request description:
When converttopsbt is called with a signed transaction, it either fails with "TX decode failed" if one or more inputs were segwit, or "Inputs must not have scriptSigs and scriptWitnesses" otherwise.
Since no effort is made by the test to ensure the inputs are segwit or not, avoid checking the exact message used.
The error code is still checked to ensure it is of the correct kind of failure.
ACKs for commit c87fc7:
instagibbs:
utACK c87fc71f7e
achow101:
utACK c87fc71f7e
Tree-SHA512: 61312b5d49aa50652902f30ba9693dfba9e5b7e6478f23becda20202d8b328ddb3e040f2199b617a68df133a5f1f8b5d68bc19d4621303f17c1963dca01bd9ef
faca95effd qa: Make swap_magic_bytes in p2p_invalid_messages atomic (MarcoFalke)
Pull request description:
Otherwise, this will lead to errors logged in the network thread:
https://travis-ci.org/MarcoFalke/bitcoin/jobs/513076282#L2765
ACKs for commit faca95:
Tree-SHA512: 8bc8280f9c0e8d40bc68c0ff1cab1c3386cbfef0728dbab5f29c2606dd65a9ac3c695b0c286be707a9f2bd62a6f87ac2032d7749fc2cf8b9fa1eba3c4cf70933
b67978529a Add comments to Python ECDSA implementation (John Newbery)
8c7b9324ca Pure python EC (Pieter Wuille)
Pull request description:
This removes the dependency on OpenSSL for the interaction tests, by providing a pure-Python
toy implementation of secp256k1.
ACKs for commit b67978:
jnewbery:
utACK b67978529a
Tree-SHA512: 181445eb08b316c46937b80dc10aa50d103ab1fdddaf834896c0ea22204889f7b13fd33cbcbd00ddba15f7e4686fe0d9f8e8bb4c0ad0e9587490c90be83966dc
c7efb652f3 blockfilter: Update BIP 158 test vectors. (Jim Posen)
19308c9e21 rpc: Add getblockfilter RPC method. (Jim Posen)
ff35105096 init: Add CLI option to enable block filter index. (Jim Posen)
accc8b8b18 index: Access functions for global block filter indexes. (Jim Posen)
2bc90e4e7b test: Unit test for block filter index reorg handling. (Jim Posen)
6bcf0998c0 test: Unit tests for block index filter. (Jim Posen)
b5e8200db7 index: Implement lookup methods on block filter index. (Jim Posen)
75a76e3619 index: Implement block filter index with write operations. (Jim Posen)
2ad2338ef9 serialize: Serialization support for big-endian 32-bit ints. (Jim Posen)
ba6ff9a6f7 blockfilter: Functions to translate filter types to/from names. (Jim Posen)
62b7a4f094 index: Ensure block locator is not stale after chain reorg. (Jim Posen)
4368384f1d index: Allow atomic commits of index state to be extended. (Jim Posen)
Pull request description:
This introduces a new BlockFilterIndex class, which is required for BIP 157 support.
The index is uses the asynchronous BaseIndex infrastructure driven by the ValidationInterface callbacks. Filters are stored sequentially in flat files and the disk location of each filter is indexed in LevelDB along with the filter hash and header. The index is designed to ensure persistence of filters reorganized out of the main chain to simplify the BIP 157 net implementation.
Stats (block height = 565500):
- Syncing the index from scratch takes 45m
- Total index size is 3.8 GiB
ACKs for commit c7efb6:
MarcoFalke:
utACK c7efb652f3
ryanofsky:
Slightly tested ACK c7efb652f3 (I just rebuilt the index with the updated PR and tested the RPC). Changes since last review: rebase, fixed compile errors in internal commits, new comments, updated error messages, tweaked cache size logic, renamed commit method, renamed constants and globals, fixed whitespace, extra BlockFilterIndex::Init error check.
Tree-SHA512: f8ed7a9b6f76df45933aa5eba92b27b3af83f6df2ccb3728a5c89eec80f654344dc14f055f6f63eb9b3a7649dd8af6553fe14969889e7e2fd2f8461574d18f28
fab6a0a659 test: Add test that addmultisigaddress fails for watchonly addresses (MarcoFalke)
fad81d870a test: Fixup creatmultisig documentation and whitespace (MarcoFalke)
Pull request description:
Just to make sure this is not regressed on accidentally in the future
ACKs for commit fab6a0:
jonatack:
ACK fab6a0a659
Tree-SHA512: bf8dcbc752f8910902a995e55ce486621156aa01f112990344815c4aab980298dfecc108e78245a8986a00c3871338ad16fc818a1bce9dfc6b37b9c88851e39d
aa410c2b17 rpc: Validate maxfeerate with AmountFromValue (João Barbosa)
Pull request description:
With this change `maxfeerate` can also be set as a string, accordingly to the help test:
```
maxfeerate (numeric or string,
```
Beside, there are no tests for the removed errors.
ACKs for commit aa410c:
meshcollider:
utACK aa410c2b17
MarcoFalke:
utACK aa410c2b17 Good catch
Tree-SHA512: f3bfea91dc7daa943729e270585dbf333055aeda805fbd01eaab20a7e0e6147382647c11525334382d198df0d3d45da6102b541efda5a1361f96271c98d5d89d
184f8785f wallet_bumpfee.py: add test for change key preservation (Gregory Sanders)
d08becff8 add functional tests for feerate bumpfee with adding inputs (Gregory Sanders)
0ea47ba7b generalize bumpfee to add inputs when needed (Gregory Sanders)
Pull request description:
When targeting a feerate using `bumpfee`, call a new function that directly uses `CWallet::CreateTransaction` and coin control to get the desired result. This allows us to get a superset of previous behavior, with an arbitrary RBF bump of a transaction provided it passes the preconditional checks and spare confirmed utxos are available.
Note(s):
0) The coin selection will use knapsack solver for the residual selection.
1) This functionality, just like knapsack coin selection in general, will hoover up negative-value inputs when given the chance.
2) Newly added inputs must be confirmed due to current Core policy. See error: `replacement-adds-unconfirmed`
3) Supporting this with `totalFee` is difficult since the "minimum total fee" option in `CreateTransaction` logic was (rightly)taken out in #10390 .
ACKs for commit 184f87:
jnewbery:
utACK 184f8785f7
Tree-SHA512: fb6542bdfb2c6010e328ec475cf9dcbff4eb2b1a1b27f78010214534908987a5635797196fa05edddffcbcf2987335872dc644a99261886d5cbb34a8f262ad3e
fafe5f0d09 test: Remove unused imports (MarcoFalke)
fa16a09215 scripted-diff: use self.sync_* methods (MarcoFalke)
faf77f9b90 test: Pass self to test_simple_bumpfee_succeeds (MarcoFalke)
fa6dc7c5c3 test: Add BitcoinTestFramework::sync_* methods (MarcoFalke)
fafe008cb4 test: Pass at most one node group to sync_all (MarcoFalke)
fa4680ed09 scripted-diff: Rename sync_blocks to send_blocks to avoid name collisions and confusion (MarcoFalke)
Pull request description:
This adds methods to the test framework that can be called by just `self.sync_*()`.
This avoids having to import the underlying util method. Also, in the default case, where all nodes are synced this avoid having to pass `self.nodes` explicitly.
So the effective changes are:
```diff
@@
-from test_framework.util import sync_blocks, sync_mempools
@@
- sync_blocks(self.nodes)
+ self.sync_blocks()
@@
- sync_mempools(self.nodes)
+ self.sync_mempools()
ACKs for commit fafe5f:
promag:
utACK fafe5f0.
jonatack:
ACK fafe5f0d09, nice simplification.
Tree-SHA512: 5c81840edf9fb3c5de2d7bf95ca36a5a8d23567cd1479a0f4044547c2080e9a3c5cf375357bc8eebb5b68829be050a171ab2512cfd47b89feed51fe3bad2cd72
fae38c3dc6 doc: Fix all typos reported by codespell (MarcoFalke)
fa9058f0ed doc: Add release notes for 15629 (MarcoFalke)
fa4a922d78 qa: Add test for missing testnet section in conf file (MarcoFalke)
dddd6f0f58 init: Throw error when network specific config is ignored (MarcoFalke)
Pull request description:
This should have no effect on mainnet users, but simplifies testing, where config settings are currently ignored with only a warning. Fix this by making it an error.
Issues:
* bitcoin client 0.17.0 ignores wallet's name (file) #14523
* Can't set custom rpcport on testnet #13777
* ...
ACKs for commit fae38c:
Tree-SHA512: 2e209526898eea6e444c803ec2666989cee4ca137492d32984998733c50a70056cb54657df8dc3027a6a0612738a8afce0bc35824b868c5f22281e00e0188530
833d98ae0 [wallet] Remove unnecessary Chain::Lock parameter from ResendWalletTransactions (John Newbery)
52b760fc6 [wallet] Schedule tx rebroadcasts in wallet (John Newbery)
f463cd107 [wallet] Keep track of the best block time in the wallet (John Newbery)
Pull request description:
Remove the `Broadcast()`/`ResendWalletTransactions()` notification from the Validation interface.
Closes#15619. See that issue for discussion.
ACKs for commit 833d98:
ryanofsky:
utACK 833d98ae07. No changes, just rebase.
Tree-SHA512: 7689f2083608ebad8c95ab6692f7842754e1ebe5508bc926a89cad7105cce41007648f37341ba5feb92b30a7aa87acd3abf264a4f1874e35a7161553f6ff3595
Removes the now-unused Broadcast/ResendWalletTransactions interface from
validationinterface.
The wallet_resendwallettransactions.py needs a sleep added at the start
to make sure that the rebroadcast scheduler is warmed up before the next
block is mined.
b5d398772 Take non-importing keys into account for spendability warning in descriptor import (Pieter Wuille)
6e597001a Import all origin info in importmulti; even for non-importing pubkeys (Pieter Wuille)
9a93c91c8 Keep full pubkeys in FlatSigningProvider::origins (Pieter Wuille)
Pull request description:
This fixes#15743 and #15742.
Since #15263, pubkeys are no longer imported for non-PKH (or WPKH, or any wrapped form of those) outputs, as that would incorrectly mark outputs to single-key versions of multisig policies as watched.
As a side effect, this change also caused origin info not to be imported anymore for multisig policies.
Fix this by plumbing through the full pubkey information for origins in FlatSigningProvider, and then importing all origin info we have in `importmulti` (knowing more never hurts, and additional origin information has no negative consequences like importing the pubkeys themselves).
ACKs for commit b5d398:
MeshCollider:
utACK b5d3987724
Tree-SHA512: 37caa2be8d01b8baa12f70a58eaa7c583f5f0afbe012e02936dd8790dc5dc852f880b77258b34ddb68cae30c029585f2d1c4f5d00015380557a1e8b471e500f3
8f5d9431a Add regtests for HTTP status codes. (Daniel Kraft)
Pull request description:
This adds explicit tests for the returned HTTP status codes to `interface_rpc.py` (for error cases) and the HTTP JSON-RPC client in general for success.
#15381 brought up discussion about the HTTP status codes in general, and the general opinion was that the current choice may not be ideal but should not be changed to preserve compatibility with existing JSON-RPC clients. Thus it makes sense to actually test the current status to ensure this desired compatibility is not broken accidentally.
ACKs for commit 8f5d94:
laanwj:
utACK 8f5d9431a3
promag:
utACK 8f5d943.
jonasschnelli:
utACK 8f5d9431a3
Tree-SHA512: 82503ccd134dd9145304e95cb6c61755f100bee27593d567cdd5c0c554d47e7b06d937456cab04107f46f4984930355db65d5e711008a0b05f2b8feec9f2950e
7813eb1db1 [qa] Overhaul p2p_compactblocks.py (Suhas Daftuar)
Pull request description:
Remove tests of:
- compactblock behavior in a simulated pre-segwit version of bitcoind
This should have been removed a long time ago, as it is not generally
necessary for us to test the behavior of old nodes (except perhaps if we
want to test that upgrading from an old node to a new one behaves properly)
- compactblock behavior during segwit upgrade (ie verifying that network
behavior before and after activation was as expected)
This is unnecessary to test now that segwit activation has already happened.
ACKs for commit 7813eb:
jnewbery:
utACK 7813eb1db1
Tree-SHA512: cadf035e6f822fa8cff974ed0c2e88a1d4d7da559b341e574e785fd3d309cc2c98c63bc05479265dc00550ae7b77fc3cbe815caae7f68bcff13a04367dca9b52
ea1a2d8794 [wallet] Remove ResendWalletTransactionsBefore (John Newbery)
f5162458cd [rpc] remove resendwallettransactions RPC (John Newbery)
Pull request description:
Remove resendwallettransactions RPC method
This RPC was added for testing wallet rebroadcasts. Since we now have a real test for wallet rebroadcasts, it's no longer needed.
The call in wallet_basic.py can be removed because wallet_resendwallettransactions.py tests wallet rebroadcast.
ACKs for commit ea1a2d:
MarcoFalke:
re-utACK ea1a2d8794
promag:
utACK ea1a2d8.
Tree-SHA512: 48245d947be1a2d2b8c30d2946105818c454a03b70b63534ecadf2144da64dafe1c9527ea670a5f4d1acd05ccdfc6c9be43ca636ee2ba58a8b7a7b2fc7bc88fd
Remove tests of:
- compactblock behavior in a simulated pre-segwit version of bitcoind
This should have been removed a long time ago, as it is not generally
necessary for us to test the behavior of old nodes (except perhaps if we
want to test that upgrading from an old node to a new one behaves properly)
- compactblock behavior during segwit upgrade (ie verifying that network
behavior before and after activation was as expected)
This is unnecessary to test now that segwit activation has already happened.
Includes changes by John Newbery.
This RPC was added for testing wallet rebroadcasts. Since we now have a
real test for wallet rebroadcasts, it's no longer needed.
The call in wallet_basic.py can be removed because
wallet_resendwallettransactions.py tests wallet rebroadcast.
This commit makes the pruning.py much faster.
Key insights to do this:
- pruning.py doesn't care what kind of transactions make up the big
blocks that are pruned in the test. Instead of making blocks with
several large, expensive to construct and validate transactions,
instead make the large blocks contain a single coinbase transaction with
a huge OP_RETURN txout.
- avoid stop-starting nodes where possible.
This test could probably be made even faster by using the P2P interface
for submitting blocks instead of the submitblock RPC.
529c1ae4a0 [tests] Add test for wallet rebroadcasts (John Newbery)
Pull request description:
The existing wallet_resendwallettransactions.py test only tests the
resendwallettransactions RPC. It does not test whether transactions are
actually rebroadcast, or whether the rebroadcast logic is called on a
timer.
Update the test to not use the resendwallettransactions RPC and test
that transactions are resent on a timer.
ACKs for commit 529c1a:
MarcoFalke:
re-utACK 529c1ae4a0
Tree-SHA512: 7341e7dd07cdc8ecbc08b1949121824148d2b58133a8e298ecdc5b7555713df3cecffb49854443cef9f033ef847cbf329e879a3bf57ab4e1fc733be432e9f718
The existing wallet_resendwallettransactions.py test only tests the
resendwallettransactions RPC. It does not test whether transactions are
actually rebroadcast, or whether the rebroadcast logic is called on a
timer.
This commit updates the test to not use the resendwallettransactions RPC and
test that transactions are rebroadcast on a timer.
947f73ceba [docs] remove reference to signrawtransaction in the developer docs. (John Newbery)
7b6616b78b [rpc] Remove deprecated functionality message from validateaddress help (John Newbery)
839c3f7c49 [rpc] Remove signrawtransaction warning (John Newbery)
Pull request description:
Removes some deprecated code from the RPCs:
- signrawtransaction was deprecated in 0.17 and removed in 0.18. A warning message was left in place to advise users to use signrawtransactionwithwallet and signrawtransactionwithkey. That warning can now be removed.
- validateaddress had some functionality deprecated in 0.17 and removed in 0.18. The help text for that functionality was not removed in 0.18 and can be removed now.
Tree-SHA512: 981678a697954ff2c392752e5a183b4b12c4eb94f55766ee1aa97a70d300668237db8fc5748c2772869d0155ba4a93e38817887b98160ee972a6f6ee94e3f7d9
signrawtransaction was deprecated in 0.17 and removed in 0.18. A warning
was left in place to tell users to migrate to using
signrawtransactionswithwallet or signrawtransactionwithkey. Remove the
warning now that it's been two releases since the method was removed.
And use it to fix a race condition in mempool_persist.py:
https://travis-ci.org/Empact/bitcoin/jobs/487577243
Since e.g. getrawmempool returns errors based on this status, this
enables users to test it for readiness.
7abd2e697c wallet/rpc: add maxfeerate parameter to testmempoolaccept (Karl-Johan Alm)
6c0a6f73e3 wallet/rpc: add maxfeerate parameter to sendrawtransaction (Karl-Johan Alm)
e5efacb941 test: Refactor vout fetches in rpc_rawtransaction (Karl-Johan Alm)
Pull request description:
This adds a new `maxfeerate` parameter to `sendrawtransaction` which forces the node to reject a transaction whose feerate is above the given fee rate.
This is a safety harness from shooting yourself in the foot and accidentally overpaying fees.
See also #12911.
Tree-SHA512: efa50134a7c17c9330cfdfd48ba400e095c0a419cc45e630618d8b44929c25d780d1bb2710c1fbbb6e687eca373505b0338cdaa7f2ff4ca22636d84c31557a2e
2e5d482659 tests: Print remaining jobs in test_runner.py (Steven Roose)
Pull request description:
This helps finding out which tests fail to finish.
Tree-SHA512: d22beb82beecd33aaa50731c83075e49577842d29fd21aa63bcb859df5da99069eba9cc16eed5d91dbba8fb0fdc317fb88b3b370c4d3917e9da1cd13b0a622dc
3f6568d66b cli: remove duplicate wallet fields from -getinfo (fanquake)
Pull request description:
`walletversion` and `balance` are both included below.
Tree-SHA512: cd9fe9739a2f492c8f7c0407b43a6fa95187f7e5318f05e080bac112f9f4333d2e9b84c505d098f8d66fa79439007d1c0b22e5a87d70bf5ea53ab647ee4c2046
fa2797808e test: Remove python3.4 workaround in feature_dbcrash (MarcoFalke)
dddd1d05d3 .python-version: Specify full version 3.5.6 (MarcoFalke)
faa7cdf764 scripted-diff: Update copyright in ./test (MarcoFalke)
fa0e65b772 scripted-diff: test: Remove brackets after assert (MarcoFalke)
fab5a1e0f4 build: Require python 3.5 (MarcoFalke)
fa6bf21f5e scripted-diff: test: Use py3.5 bytes::hex() method (MarcoFalke)
Pull request description:
Python 3.4 is EOL after March 2019, so switch to 3.5. See https://devguide.python.org/#status-of-python-branches
This pull does the following in a bunch of commits:
* scripted diff to use the `bytes::hex()` method in place of previous wrappers (`b2x`, `bytes_to_hex_str`, `hexlify`, ...)
* Update the build system (gitian and travis) to remove python2.7 and replace it with python3.5
* Another scripted-diff to remove brackets after `assert`. This is unrelated to the python3.5 switch, but a stylistic commit, so probably not worth to split up. The motivation behind it is to avoid asserting on data structures (such as tuples of length one), which never fails:
```py
>>> assert(False,) # with brackets
>>> assert False, # without brackets
SyntaxError: invalid syntax
>>> assert False # proper assertion
AssertionError
```
* And then a final scripted diff to update the copyright headers in the `test` subfolder, since I touched most of the files anyway and it wouldn't make sense to split this commit out into a separate pull.
For reference (contributed by luke-jr):
Ubuntu LTS (bionic): 3.6.5
Debian stable (stretch): 3.5.3
RHEL 8 (expected before v0.19): 3.6.x
Gentoo stable: 3.6.5
Arch: 3.7.1
Tree-SHA512: 643c28cd2d5b9543ce4bf8ad2a8b282bc79b37dc5b25c9c8358e6ce201e2a67a546463e5f3430b16652eb2489d7c3ed4b0772cd2e2bf790fe68a5e3cc8a25029
