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2022-04-28rpc: Move signmessage RPC util to new fileMacroFake
Can be reviewed with --color-moved=dimmed-zebra --color-moved-ws=ignore-all-space
2022-04-28Remove cs_main from verifymessageMacroFake
2022-04-25Remove not needed clang-format off commentsMarcoFalke
Can be reviewed with --word-diff-regex=. --ignore-all-space
2022-04-16util/check: Add CHECK_NONFATAL identity function, NONFATAL_UNREACHABLE AND ↵Aurèle Oulès
UNREACHABLE macros
2022-04-06Merge bitcoin/bitcoin#24681: build: Bump libevent minimum version up to 2.1.8fanquake
e40779a4fee03c6c455149bd8e9d1a7ccd991450 refactor: Remove outdated libevent logging code (Fabian Jahr) 0598f36852199d0cee8fe9e676a2e0bec3ebf624 refactor: account for requiring libevent 2.1.8+ (fanquake) aaf72d62c18f9cb325c150cf0cc21abb201607c8 build: Bump libevent minimum version up to 2.1.8 (Hennadii Stepanov) Pull request description: Required to support new functionality in bitcoin/bitcoin#19420. `libevent` availability: https://repology.org/project/libevent/versions ACKs for top commit: laanwj: Code review ACK e40779a4fee03c6c455149bd8e9d1a7ccd991450 fanquake: ACK e40779a4fee03c6c455149bd8e9d1a7ccd991450 Tree-SHA512: ccb14ea2f591484a3df5bc4a19f4f5400ef6b1cfb7dc45dd99f96cb948748215ed3b5debc34869763c91b8c7a26993fdb9b870950c0743c4d01038ab27c5e4e2
2022-04-04refactor: fix clang-tidy named args usagefanquake
2022-04-02refactor: Remove outdated libevent logging codeFabian Jahr
The removed code was intended to catch issues with event_enable_debug_logging which was not available prior to libevent 2.1.1. This is not necessary since the minimum libevent version was bumped to 2.1.8.
2022-02-21Replace "can not" with "cannot" in docs, user messages, and testsJon Atack
2022-01-06Add src/node/* code to node:: namespaceRussell Yanofsky
2021-12-30scripted-diff: Bump copyright headersHennadii Stepanov
-BEGIN VERIFY SCRIPT- ./contrib/devtools/copyright_header.py update ./ -END VERIFY SCRIPT- Commits of previous years: * 2020: fa0074e2d82928016a43ca408717154a1c70a4db * 2019: aaaaad6ac95b402fe18d019d67897ced6b316ee0
2021-12-14refactor: remove unneeded calls to strprintf()fanquake
2021-12-11Merge bitcoin/bitcoin#23113: Add warnings to createmultisig and addmultisig ↵MarcoFalke
if using uncompressed keys d5cab1a96d26e66d342fb5ec35c809bb82869d00 Add createmultisig and addmultisigaddress warnings release note (Samuel Dobson) e46fc935aa6eb392ef9411dad310697aba601f6a Add warnings field to addmultisigaddress to warn about uncompressed keys (Samuel Dobson) d1a9742623e2a8f3307c84c2df6993f62617a6f6 Add warnings field to createmultisig to warn about uncompressed keys (Samuel Dobson) Pull request description: Fixes #21368 Currently, if there are any uncompressed keys when calling `AddAndGetMultisigDestination`, it will just default to a legacy address regardless of the chosen `address_type`. Rather than keeping this silent behaviour which may be confusing to users, we explicitly add a `warnings` field which will warn the user why their address format is different. ACKs for top commit: achow101: ACK d5cab1a96d26e66d342fb5ec35c809bb82869d00 Tree-SHA512: c2ac7f7689251bd4fcd8c26506f053921fbaf34c7a26a74e82ebc7f82cc0bd25407fd7954bf98365dcafa51fa45dcdbee6214320580ca69509690c3555e71cc0
2021-12-09Merge bitcoin/bitcoin#23703: scripted-diff: Use named args in RPC docsfanquake
fa9aaf8694c63200ad01fd5659aba4f409b2c3b9 scripted-diff: Use named args in RPC docs (MarcoFalke) Pull request description: Incorrect named args are source of bugs, like #22979. To allow them being checked by `clang-tidy`, use a format it can understand. ACKs for top commit: fanquake: ACK fa9aaf8694c63200ad01fd5659aba4f409b2c3b9 - checked `clang-tidy` and it's fine here, (but throwing errors in other files. i.e `wallet/test/wallet_tests.cpp`). Tree-SHA512: e09dae8ee999a5c4819e6f848c12139593ca0e915e645c8fabeb97c379188fb9104d286c02c71f590abc64cdec125f78026735f83e016111976baa49d588a9bc
2021-12-08doc: Normalize RPC description whitespaceMarcoFalke
2021-12-08scripted-diff: Use named args in RPC docsMarcoFalke
-BEGIN VERIFY SCRIPT- sed -i -e 's|, /\* optional \*/ true,|, /*optional=*/true,|g' $( git grep -l ', /\* optional \*/ true,' ) -END VERIFY SCRIPT-
2021-12-08Merge bitcoin/bitcoin#20295: rpc: getblockfrompeerMarcoFalke
dce8c4c38111556ca480aa0e63c46b71f66b508f rpc: getblockfrompeer (Sjors Provoost) b884ababc29ce963826d8a4327ed6a5e629ff175 rpc: move Ensure* helpers to server_util.h (Sjors Provoost) Pull request description: This adds an RPC method to fetch a block directly from a peer. This can used to fetch stale blocks with lower proof of work that are normally ignored by the node (`headers-only` in `getchaintips`). Usage: ``` bitcoin-cli getblockfrompeer HASH peer_n ``` Closes #20155 Limitations: * you have to specify which peer to fetch the block from * the node must already have the header ACKs for top commit: jnewbery: ACK dce8c4c38111556ca480aa0e63c46b71f66b508f fjahr: re-ACK dce8c4c38111556ca480aa0e63c46b71f66b508f Tree-SHA512: 843ba2b7a308f640770d624d0aa3265fdc5c6ea48e8db32269b96a082b7420f7953d1d8d1ef2e6529392c7172dded9d15639fbc9c24e7bfa5cfb79e13a5498c8
2021-12-08Add warnings field to createmultisig to warn about uncompressed keysSamuel Dobson
2021-12-02doc: Document optional result fields in validateaddressMarcoFalke
Can be reviewed with --ignore-all-space --word-diff-regex=.
2021-12-02rpc: move Ensure* helpers to server_util.hSjors Provoost
2021-12-01rpc: remove info about mallocinfo needing glibc 2.10+fanquake
We require glibc 2.18+.
2021-10-12Add error_locations to validateaddress RPCSamuel Dobson
2021-10-04Merge bitcoin/bitcoin#20487: Add syscall sandboxing using seccomp-bpf (Linux ↵W. J. van der Laan
secure computing mode) 4747da3a5b639b5a336b737e7e3cbf060cf2efcf Add syscall sandboxing (seccomp-bpf) (practicalswift) Pull request description: Add experimental syscall sandboxing using seccomp-bpf (Linux secure computing mode). Enable filtering of system calls using seccomp-bpf: allow only explicitly allowlisted (expected) syscalls to be called. The syscall sandboxing implemented in this PR is an experimental feature currently available only under Linux x86-64. To enable the experimental syscall sandbox the `-sandbox=<mode>` option must be passed to `bitcoind`: ``` -sandbox=<mode> Use the experimental syscall sandbox in the specified mode (-sandbox=log-and-abort or -sandbox=abort). Allow only expected syscalls to be used by bitcoind. Note that this is an experimental new feature that may cause bitcoind to exit or crash unexpectedly: use with caution. In the "log-and-abort" mode the invocation of an unexpected syscall results in a debug handler being invoked which will log the incident and terminate the program (without executing the unexpected syscall). In the "abort" mode the invocation of an unexpected syscall results in the entire process being killed immediately by the kernel without executing the unexpected syscall. ``` The allowed syscalls are defined on a per thread basis. I've used this feature since summer 2020 and I find it to be a helpful testing/debugging addition which makes it much easier to reason about the actual capabilities required of each type of thread in Bitcoin Core. --- Quick start guide: ``` $ ./configure $ src/bitcoind -regtest -debug=util -sandbox=log-and-abort … 2021-06-09T12:34:56Z Experimental syscall sandbox enabled (-sandbox=log-and-abort): bitcoind will terminate if an unexpected (not allowlisted) syscall is invoked. … 2021-06-09T12:34:56Z Syscall filter installed for thread "addcon" 2021-06-09T12:34:56Z Syscall filter installed for thread "dnsseed" 2021-06-09T12:34:56Z Syscall filter installed for thread "net" 2021-06-09T12:34:56Z Syscall filter installed for thread "msghand" 2021-06-09T12:34:56Z Syscall filter installed for thread "opencon" 2021-06-09T12:34:56Z Syscall filter installed for thread "init" … # A simulated execve call to show the sandbox in action: 2021-06-09T12:34:56Z ERROR: The syscall "execve" (syscall number 59) is not allowed by the syscall sandbox in thread "msghand". Please report. … Aborted (core dumped) $ ``` --- [About seccomp and seccomp-bpf](https://en.wikipedia.org/wiki/Seccomp): > In computer security, seccomp (short for secure computing mode) is a facility in the Linux kernel. seccomp allows a process to make a one-way transition into a "secure" state where it cannot make any system calls except exit(), sigreturn(), and read() and write() to already-open file descriptors. Should it attempt any other system calls, the kernel will terminate the process with SIGKILL or SIGSYS. In this sense, it does not virtualize the system's resources but isolates the process from them entirely. > > […] > > seccomp-bpf is an extension to seccomp that allows filtering of system calls using a configurable policy implemented using Berkeley Packet Filter rules. It is used by OpenSSH and vsftpd as well as the Google Chrome/Chromium web browsers on Chrome OS and Linux. (In this regard seccomp-bpf achieves similar functionality, but with more flexibility and higher performance, to the older systrace—which seems to be no longer supported for Linux.) ACKs for top commit: laanwj: Code review and lightly tested ACK 4747da3a5b639b5a336b737e7e3cbf060cf2efcf Tree-SHA512: e1c28e323eb4409a46157b7cc0fc29a057ba58d1ee2de268962e2ade28ebd4421b5c2536c64a3af6e9bd3f54016600fec88d016adb49864b63edea51ad838e17
2021-10-01Add syscall sandboxing (seccomp-bpf)practicalswift
2021-09-16Merge bitcoin/bitcoin#22219: multiprocess: Start using init makeNode, ↵fanquake
makeChain, etc methods e4709c7b56612553fb7cbf16ef2d5099c5b732d0 Start using init makeNode, makeChain, etc methods (Russell Yanofsky) Pull request description: Use `interfaces::Init::make*` methods instead of `interfaces::Make*` functions, so interfaces can be constructed differently in different executable without having to change any code. (So for example `bitcoin-gui` can make an `interfaces::Node` pointer that communicates with a `bitcoin-node` subprocess, while `bitcoin-qt` can make an `interfaces::Node` pointer that controls node code in the same process.) --- This PR is part of the [process separation project](https://github.com/bitcoin/bitcoin/projects/10). The commit was first part of larger PR #10102. ACKs for top commit: jamesob: reACK https://github.com/bitcoin/bitcoin/commit/e4709c7b56612553fb7cbf16ef2d5099c5b732d0 achow101: ACK e4709c7b56612553fb7cbf16ef2d5099c5b732d0 benthecarman: utACK e4709c7b56612553fb7cbf16ef2d5099c5b732d0 Tree-SHA512: 580c1979dbb2ef444157c8e53041e70d15ddeee77e5cbdb34f70b6d228cc2d2fe3843825f172da84e506200c58f7e0932f7cd4c006bb5058c1f4e43259394834
2021-09-21doc: Fix RPC result documentationMarcoFalke
2021-09-02Merge bitcoin/bitcoin#18448: rpc: fix/add missing RPCExamples for "Util" RPCsMarcoFalke
ea98d9c2eff86e6537f35ac4381ac169daacde36 rpc: fix/add missing RPCExamples for "Util" RPCs (Sebastian Falbesoner) Pull request description: Similar to https://github.com/bitcoin/bitcoin/pull/18398, this PR gives the RPCExamples in the RPC category "Util" (that currently contains `createmultisig`, `deriveaddresses`, `estimatesmartfee`, `getdescriptorinfo`, `signmessagewithprivkey`, `validateaddress`, `verifymessage`) some love by fixing one broken and adding three missing examples: - fixed `HelpExampleRpc` for `createmultisig` (disturbing escape characters and quotation marks) - added missing `HelpExampleRpc` for - `deriveaddresses` (also put descriptor in a new string constant) - `estimatesmartfee` - `getdescriptorinfo` (also put descriptor in a new string constant) Output for `createmultisig` example on the master branch: ``` $ curl --user __cookie__ --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "createmultisig", "params": [2, "[\"03789ed0bb717d88f7d321a368d905e7430207ebbd82bd342cf11ae157a7ace5fd\",\"03dbc6764b8884a92e871274b87583e6d5c2a58819473e17e107ef3f6aa5a61626\"]"]}' -H 'content-type: text/plain;' http://127.0.0.1:8332/ Enter host password for user '__cookie__': {"result":null,"error":{"code":-1,"message":"JSON value is not an array as expected"},"id":"curltest"} ``` Output for `createmultisig` example on the PR branch: ``` $ curl --user __cookie__ --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "createmultisig", "params": [2, ["03789ed0bb717d88f7d321a368d905e7430207ebbd82bd342cf11ae157a7ace5fd","03dbc6764b8884a92e871274b87583e6d5c2a58819473e17e107ef3f6aa5a61626"]]}' -H 'content-type: text/plain;' http://127.0.0.1:8332/ Enter host password for user '__cookie__': {"result":{"address":"3QsFXpFJf2ZY6GLWVoNFFd2xSDwdS713qX","redeemScript":"522103789ed0bb717d88f7d321a368d905e7430207ebbd82bd342cf11ae157a7ace5fd2103dbc6764b8884a92e871274b87583e6d5c2a58819473e17e107ef3f6aa5a6162652ae","descriptor":"sh(multi(2,03789ed0bb717d88f7d321a368d905e7430207ebbd82bd342cf11ae157a7ace5fd,03dbc6764b8884a92e871274b87583e6d5c2a58819473e17e107ef3f6aa5a61626))#4djp057k"},"error":null,"id":"curltest"} ``` ACKs for top commit: jonatack: ACK ea98d9c2eff86e6537f35ac4381ac169daacde36 looked at the code, rebased to master, ran the helps, did not try running the added json-rpc examples Tree-SHA512: d6ecb6da66f19517065453357d210102e2cc9f1f8037aeb6a9177ff036d0c21773dddf5e0acdbc71edbbde3026e4d1e7ce7c0935cd3e023c60f34e1b173b3299
2021-08-17Start using init makeNode, makeChain, etc methodsRussell Yanofsky
Use interfaces::Init::make* methods instead of interfaces::Make* functions, so interfaces can be constructed differently in different executables without having to change any code. (So for example bitcoin-gui can make an interfaces::Node pointer that communicates with a bitcoin-node subprocess, while bitcoin-qt can make an interfaces::Node pointer that starts node code in the same process.)
2021-08-04make ParseOutputType return a std::optional<OutputType>fanquake
2021-06-22Disallow bech32m addresses for legacy wallet thingsAndrew Chow
We don't want the legacy wallet to ever have bech32m addresses so don't allow importing them. This includes addmultisigaddress as that is a legacy wallet only RPC Additionally, bech32m multisigs are not available yet, so disallow them in createmultisig.
2021-05-14test: Fix off-by-one in mockscheduler test RPCMarcoFalke
2021-04-30Merge bitcoin/bitcoin#19521: Coinstats IndexW. J. van der Laan
5f96d7d22d8e05876c6fc014e70488699950fe38 rpc: gettxoutsetinfo rejects hash_serialized_2 for specific height (Fabian Jahr) 23fe50436be641d7417152adc683192649ba206a test: Add test for coinstatsindex behavior in reorgs (Fabian Jahr) 90c966b0f3cfbd6bce5883f46d8527c6853a86a2 rpc: Allow gettxoutsetinfo and getblockstats for stale blocks (Fabian Jahr) b9362392aef2689bc106c20925859ede555d082b index, rpc: Add use_index option for gettxoutsetinfo (Fabian Jahr) bb7788b121a30489bc81a1f46dde6a9b19ae4ec1 test: Test coinstatsindex robustness across restarts (Fabian Jahr) e0938c29099635150014ffc9bb0cafa8049ec55a test: Add tests for block_info in gettxoutsetinfo (Fabian Jahr) 2501576eccb08af80471c7b7b843b189ad6758c0 rpc, index: Add verbose amounts tracking to Coinstats index (Fabian Jahr) 655d929836a71af23d2035d2e2e99ad8b8c340c3 test: add coinstatsindex getindexinfo coverage, improve current tests (Jon Atack) ca01bb8d689f93e1c7669b0ba7a4994c0206dabd rpc: Add Coinstats index to getindexinfo (Fabian Jahr) 57a026c30fef3138bb8db46e6865acb9dc2674f8 test: Add unit test for Coinstats index (Fabian Jahr) 6a4c0c09ab4d073a26c3c4a02783d5dcd88f6eef test: Add functional test for Coinstats index (Fabian Jahr) 3f166ecc125fce6ccd995687fa16572090a5d099 rpc: gettxoutsetinfo can be requested for specific blockheights (Fabian Jahr) 3c914d58ff323255b32e717d0ce28209ec0abdaa index: Coinstats index can be activated with command line flag (Fabian Jahr) dd58a4de21469d6d848ae309edc47f558628221d index: Add Coinstats index (Fabian Jahr) a8a46c4b3cfda4b95c92a36f8cebd3606377e57d refactor: Simplify ApplyStats and ApplyHash (Fabian Jahr) 9c8a265fd21a87228c18a1661df99fedc1866baf refactor: Pass hash_type to CoinsStats in stats object (Fabian Jahr) 2e2648a9021dfbb6e17dfa81472f057dacbc34e0 crypto: Make MuHash Remove method efficient (Fabian Jahr) Pull request description: This is part of the coinstats index project tracked in #18000 While the review of the new UTXO set hash algorithm (MuHash) takes longer recently #19328 was merged which added the possibility to run `gettxoutsetinfo` with a specific hash type. As the first type it added `hash_type=none` which skips the hashing of the UTXO set altogether. This alone did not make `gettxoutsetinfo` much faster but it allows the use of an index for the remaining coin statistics even before a new hashing algorithm has been added. Credit to Sjors for the idea to take this intermediate step. Features summary: - Users can start their node with the option `-coinstatsindex` which syncs the index in the background - After the index is synced the user can use `gettxoutsetinfo` with `hash_type=none` or `hash_type=muhash` and will get the response instantly out of the index - The user can specify a height or block hash when calling `gettxoutsetinfo` to see coin statistics at a specific block height ACKs for top commit: Sjors: re-tACK 5f96d7d22d8e05876c6fc014e70488699950fe38 jonatack: Code review re-ACK 5f96d7d22d8e05876c6fc014e70488699950fe38 per `git range-diff 13d27b4 07201d3 5f96d7d` promag: Tested ACK 5f96d7d22d8e05876c6fc014e70488699950fe38. Light code review ACK 5f96d7d22d8e05876c6fc014e70488699950fe38. Tree-SHA512: cbca78bee8e9605c19da4fbcd184625fb280200718396c694a56c7daab6f44ad23ca9fb5456d09f245d8b8d9659fdc2b3f3ce5e953c1c6cf4003dbc74c0463c2
2021-04-23multiprocess: Add echoipc RPC method and testRussell Yanofsky
Add simple interfaces::Echo IPC interface with one method that just takes and returns a string, to test multiprocess framework and provide an example of how it can be used to spawn and call between processes.
2021-04-19rpc: Add Coinstats index to getindexinfoFabian Jahr
2021-04-17rpc: Keep default argument value in correct typeJoão Barbosa
2021-04-01rpc: Fail to return undocumented return valuesMarcoFalke
2021-03-29refactor: replace util::Ref by std::any (C++17)Sebastian Falbesoner
2021-03-01Merge #18466: rpc: fix invalid parameter error codes for ↵Wladimir J. van der Laan
{sign,verify}message RPCs a5cfb40e27bd281354bd0d14d91f83efb6bfce9f doc: release note for changed {sign,verify}message error codes (Sebastian Falbesoner) 9e399b9b2d386b28c0c0ff59fc75d31dbec31d9c test: check parameter validity in rpc_signmessage.py (Sebastian Falbesoner) e62f0c71f10def124b1c1219d790cef246a32c3e rpc: fix {sign,message}verify RPC errors for invalid address/signature (Sebastian Falbesoner) Pull request description: RPCs that accept address parameters usually return the intended error code `RPC_INVALID_ADDRESS_OR_KEY` (-5) if a passed address is invalid. The two exceptions to the rule are `signmessage` and `verifymessage`, which return `RPC_TYPE_ERROR` (-3) in this case instead. Oddly enough `verifymessage` returns `RPC_INVALID_ADDRESS_OR_KEY` when the _signature_ was malformed, where `RPC_TYPE_ERROR` would be more approriate. This PR fixes these inaccuracies and as well adds tests to `rpc_signmessage.py` that check the parameter validity and error codes for the related RPCs `signmessagewithprivkey`, `signmessage` and `verifymessage`. master branch: ``` $ ./bitcoin-cli signmessage invalid_addr message error code: -3 error message: Invalid address $ ./bitcoin-cli verifymessage invalid_addr dummy_sig message error code: -3 error message: Invalid address $ ./bitcoin-cli verifymessage 12c6DSiU4Rq3P4ZxziKxzrL5LmMBrzjrJX invalid_sig message error code: -5 error message: Malformed base64 encoding ``` PR branch: ``` $ ./bitcoin-cli signmessage invalid_addr message error code: -5 error message: Invalid address $ ./bitcoin-cli verifymessage invalid_addr dummy_sig message error code: -5 error message: Invalid address $ ./bitcoin-cli verifymessage 12c6DSiU4Rq3P4ZxziKxzrL5LmMBrzjrJX invalid_sig message error code: -3 error message: Malformed base64 encoding ``` ACKs for top commit: laanwj: Code review ACK a5cfb40e27bd281354bd0d14d91f83efb6bfce9f meshcollider: utACK a5cfb40e27bd281354bd0d14d91f83efb6bfce9f Tree-SHA512: bae0c4595a2603cea66090f6033785601837b45fd853052312b3a39d8520566c581994b68f693dd247c22586c638c3b7689c849085cce548cc36b9bf0e119d2d
2021-02-02util: Disallow negative mocktimeMarcoFalke
Signed-off-by: practicalswift <practicalswift@users.noreply.github.com>
2021-01-28rpc: Remove duplicate name and argNames from CRPCCommandMarcoFalke
2021-01-24Better error messages for invalid addressesBezdrighin
This commit addresses #20809. We add an additional 'error' property in the result of 'validateaddress' in case the address is not valid that gives a short description of why the address in invalid. We also change the error message returned by 'getaddressinfo' in case the address is invalid.
2020-09-24remove dead rpc codeMarcoFalke
Checking for fHelp, or the size of the args, is dead code because: * fHelp is always false (src/qt/test/rpcnestedtests.cpp) * It is already implicitly called by RPCHelpMan::Check (src/rpc/mining.cpp, src/rpc/misc.cpp, src/rpc/net.cpp)
2020-08-29rpc: fix {sign,message}verify RPC errors for invalid address/signatureSebastian Falbesoner
2020-08-16rpc: Add getindexinfo RPCFabian Jahr
2020-08-14rpc: fix/add missing RPCExamples for "Util" RPCsSebastian Falbesoner
fixes HelpExampleRpc for - createmultisig adds missing HelpExampleRpc for - deriveaddresses - estimatesmartfee - getdescriptorinfo
2020-08-02rpc: Assert that RPCArg names are equal to CRPCCommand ones (misc)MarcoFalke
2020-08-02rpc: Limit echo to 10 argsMarcoFalke
2020-08-02refactor: Use C++11 range based for loops to simplify rpc codeMarcoFalke
2020-06-24refactor: Replace HexStr(o.begin(), o.end()) with HexStr(o)Wladimir J. van der Laan
HexStr can be called with anything that bas `begin()` and `end()` functions, so clean up the redundant calls.
2020-05-13refactor: Pass NodeContext to RPC and REST methods through util::RefRussell Yanofsky
This commit does not change behavior
2020-04-26Merge #18669: log: Use Join() helper when listing log categoriesMarcoFalke
faec0638872798b58b9882ee079014555bc8393e log: Use Join() helper when listing log categories (MarcoFalke) Pull request description: This removes the global `ListLogCategories` and replaces it with a one-line member function `LogCategoriesString`, which just calls `Join`. Should be a straightforward refactor to get rid of a few LOC. ACKs for top commit: laanwj: ACK faec0638872798b58b9882ee079014555bc8393e promag: ACK faec0638872798b58b9882ee079014555bc8393e, I also think it's fine as it is (re https://github.com/bitcoin/bitcoin/pull/18669#discussion_r412944724). Tree-SHA512: 2f51f9ce1246eda5630015f3a869e36953c7eb34f311baad576b92d7829e4e88051c6189436271cd0a13732a49698506345b446b98fd28e58edfb5b62169f1c9