30178 Commits

Author SHA1 Message Date
Ava Chow
57350c5352
Merge bitcoin/bitcoin#34272: psbt: Fix PSBTInputSignedAndVerified bounds assert
2f5b1c5f80590ffa6b5a5bcfb21fddb1dc22e852 psbt: Fix `PSBTInputSignedAndVerified` bounds `assert` (Lőrinc)

Pull request description:

  This PR fixes an off-by-one in a debug assertion in `PSBTInputSignedAndVerified`.
  The function indexes `psbt.inputs[input_index]`, so the assertion must not allow indexing at `psbt.inputs.size()`.

  Found during review: https://github.com/bitcoin/bitcoin/pull/31650#discussion_r2685892867

ACKs for top commit:
  optout21:
    utACK 2f5b1c5f80590ffa6b5a5bcfb21fddb1dc22e852
  maflcko:
    lgtm ACK 2f5b1c5f80590ffa6b5a5bcfb21fddb1dc22e852
  achow101:
    ACK 2f5b1c5f80590ffa6b5a5bcfb21fddb1dc22e852

Tree-SHA512: cec613a9a38358d5caa243197d746baa129aebfd7fe697689f28e652f94c4683873c4676d5eb2eb909ea19de5e5f6e54ecc5f3162384a48f6f38a59273667689
2026-01-13 16:24:31 -08:00
merge-script
4aa80c3b5e
Merge bitcoin/bitcoin#34230: fuzz: Reject too large descriptor leaf sizes in scriptpubkeyman target
fa8d56f9f092fceab7dfb10533c4187e1b5fabfe fuzz: Reject too large descriptor leaf sizes in scriptpubkeyman target (MarcoFalke)
fabac1b3950e4bc9716f9b3c17b8f02952d6b974 fuzz: Reject some more "expensive" descriptors in the scriptpubkeyman target (MarcoFalke)
333333356f431d8ef318f685860d25ff99d4b457 fuzz: [refactor] Use std::span over FuzzBufferType in descriptor utils (MarcoFalke)

Pull request description:

  Accepting "expensive" fuzz inputs which have no real use-case is problematic, because it prevents the fuzz engine from spending time on the next useful fuzz input.

  Also, this may lead to problems, where the fuzz target can not be run at all on some platforms. See https://github.com/bitcoin/bitcoin/issues/34110.

  Fixes https://github.com/bitcoin/bitcoin/issues/34110 by rejecting those useless and expensive inputs (via the third commit)

  Can be tested by running the input and checking the time before and after the changes here:

  ```
  curl -fLO '1cf91e0c6b'
  FUZZ=scriptpubkeyman time ./bld-cmake/bin/fuzz ./1cf91e0c6bfff9dafcd4db5b0ba36b1e906f4cf5
  ```

  Also, the second commit fixes https://github.com/bitcoin/bitcoin/issues/31066.

ACKs for top commit:
  brunoerg:
    code review ACK fa8d56f9f092fceab7dfb10533c4187e1b5fabfe
  marcofleon:
    ACK fa8d56f9f092fceab7dfb10533c4187e1b5fabfe
  sipa:
    ACK fa8d56f9f092fceab7dfb10533c4187e1b5fabfe

Tree-SHA512: e683cb89c3047358add438508c173f1cf647827bcadc3564ad42c757e4c99b8e9b777213fd38ebeb46f4c89a72363e0642f47435e20df3960eaeb5b8257dbd32
2026-01-13 15:28:25 -08:00
merge-script
72e0999ddb
Merge bitcoin/bitcoin#34099: test: Improve code coverage for pubkey checks
6bb66fcccb5b65eada89578737ecada6f017fc5a test: Improve code coverage for pubkey checks (billymcbip)

Pull request description:

  Cover these branches in `IsCompressedOrUncompressedPubKey` and `IsCompressedPubKey`:
  - `Non-canonical public key: invalid length for uncompressed key`
  - `Non-canonical public key: invalid length for compressed key`
  - `Non-canonical public key: invalid prefix for compressed key`

  See the missed branches here: https://maflcko.github.io/b-c-cov/total.coverage/src/script/interpreter.cpp.gcov.html

  `script_tests` succeed on my end.

ACKs for top commit:
  maflcko:
    ACK 6bb66fcccb5b65eada89578737ecada6f017fc5a 🌑
  rkrux:
    code review ACK 6bb66fcccb5b65eada89578737ecada6f017fc5a
  darosior:
    ACK 6bb66fcccb5b65eada89578737ecada6f017fc5a

Tree-SHA512: f9b8acdc8bbe95559d594e74ed721d27be715754717b1557796168a6e81ce56d5bc20c40da4c0906ef9e1edcd88f202f000e34d8331d9be8d2694067a98996c6
2026-01-13 15:24:16 -08:00
merge-script
377c6dbc3c
Merge bitcoin/bitcoin#34224: init: Return EXIT_SUCCESS on interrupt
997e7b4d7cf7c4622938798423447375383184c0 init: Fix non-zero code on interrupt (sedited)

Pull request description:

  Reported by dergoegge on irc.

  An interrupt does not create a failure exit code during normal operation. This should also be the case when interrupt is triggered during initialization. However a failure exit code is currently returned if an interrupt occurs during init. Fix this by making `AppInitMain` return true instead of false on interrupt, which further up the call stack currently sets the `EXIT_FAILURE` code. Also add a check for the interrupt condition during GUI startup. Returning `EXIT_SUCCESS` seems to be the usual behaviour for daemons, see the discussion on IRC for this: https://www.erisian.com.au/bitcoin-core-dev/log-2026-01-08.html#l-146 .

  Best reviewed with `--color-moved=dimmed-zebra --color-moved-ws=ignore-all-space`.

ACKs for top commit:
  maflcko:
    review ACK 997e7b4d7cf7c4622938798423447375383184c0 🔺
  janb84:
    ACK 997e7b4d7cf7c4622938798423447375383184c0
  dergoegge:
    utACK 997e7b4d7cf7c4622938798423447375383184c0

Tree-SHA512: c9542e95d9312567e029426a329144b5bc638d8ebc9c966e0246c1bb728d40f56ca425b00c446f5d238067e629c2337d0fe78bcc5a8760424d2ec38a5578e115
2026-01-13 15:23:12 -08:00
Ava Chow
d30ad4a912 wallet, rpc: Use HandleWalletError in createwallet
Use the utility function HandleWalletError to deal with wallet creation
errors in createwallet.
2026-01-13 13:12:50 -08:00
ismaelsadeeq
7fc465ece8
doc: fix incorrect description of PackageMempoolChecks
- We no longer enforce ancestor/descendant count limit
  in both PreChecks and PackageMempoolChecks.

- This commit fixes the incorrect comment by just renaming
  `PackageMempoolChecks` to `PackageRBFChecks`

- The method name is self explanatory now; hence no need
  for a description comment.
2026-01-13 18:52:44 +00:00
MarcoFalke
fa0195499c
refactor: [gui] Use lambdas over std::bind
This refactor makes the code easier to read and maintain.
2026-01-13 18:08:35 +01:00
MarcoFalke
eeee1e341f
refactor: Remove trailing semicolon after ADD_SIGNALS_DECL_WRAPPER
This is redundant and inconsistent, because call-sites are expected to
add the semicolon, which they all do.
2026-01-13 16:21:55 +01:00
Ryan Ofsky
62557c9529
Merge bitcoin/bitcoin#33819: mining: getCoinbase() returns struct instead of raw tx
48f57bb35bbdbce509b8ef195de69e2a61a2511e mining: add new getCoinbaseTx() returning a struct (Sjors Provoost)
d59b4cdb5772917ee13e48552d51662160104b62 mining: rename getCoinbaseTx() to ..RawTx() (Sjors Provoost)

Pull request description:

  The first commit renames `getCoinbaseTx()` to `getCoinbaseRawTx()` to reflect that it returns a serialised transaction. This does not impact IPC clients, because they do not use the function name.

  The second commit then introduces a replacement `getCoinbase()` that provides a struct with everything clients need to construct a coinbase. This avoids clients having to parse and manipulate our dummy transaction.

  Deprecate but don't remove `getCoinbaseRawTx()`, `getCoinbaseCommitment()` and `getWitnessCommitmentIndex()`.

  After this change we can drop these deprecated methods, which in turn would allow us to clear the dummy transaction from the `getBlock()` result. But that is left for a followup to keep this PR focussed. See https://github.com/Sjors/bitcoin/pull/106 for an approach.

  Expand the `interface_ipc.py` functional test to document its usage.

  Can be tested using:
  - https://github.com/stratum-mining/sv2-tp/pull/59

ACKs for top commit:
  ryanofsky:
    Code review ACK 48f57bb35bbdbce509b8ef195de69e2a61a2511e. Just rebased and addressed comments and dropped coinbase tx "template" suffix, which is a nice change
  ismaelsadeeq:
    code review ACK 48f57bb35bbdbce509b8ef195de69e2a61a2511e
  vasild:
    ACK 48f57bb35bbdbce509b8ef195de69e2a61a2511e

Tree-SHA512: c4f1d752777fb3086a1a0b7b8b06e4205dbe2f3adb41f218855ad1dee952adccc263cf82acd3bf9300cc83c2c64cebd2b27f66a69beee32d325b9a85e3643b0d
2026-01-13 08:01:57 -05:00
Ryan Ofsky
73d0fe62d3 Merge commit '7562e2aeed95b0dc627e8e3a849941992f0189bb' into pr/subtree-7 2026-01-13 07:24:18 -05:00
Ryan Ofsky
7562e2aeed Squashed 'src/ipc/libmultiprocess/' changes from a4f92969649..1fc65008f7d
1fc65008f7d Merge bitcoin-core/libmultiprocess#237: Made SpawnProcess() behavior safe post fork()
5205a87cd90 test: check SpawnProcess post-fork safety
69652f0edfa Precompute argv before fork in SpawnProcess
30a8681de62 SpawnProcess: avoid fd leak on close failure
d0fc1081d09 Merge bitcoin-core/libmultiprocess#196: ci: Add NetBSD job
7b171f45bfc Merge bitcoin-core/libmultiprocess#234: doc: Fix typos and grammar in documentation and comments
861da39cae9 ci: Add NetBSD job
458745e3940 Fix various typos, spelling mistakes, and grammatical errors in design.md and source code comments.
585decc8561 Merge bitcoin-core/libmultiprocess#236: ci: Install binary package `capnproto` on OpenBSD instead of building it
14e926a3ff3 refactor: extract MakeArgv helper
1ee909393f4 ci: Install binary package `capnproto` on OpenBSD instead of building it
470fc518d4b Merge bitcoin-core/libmultiprocess#230: cmake: add ONLY_CAPNP target_capnp_sources option
2d8886f26c4 Merge bitcoin-core/libmultiprocess#228: Add versions.md and version.h files describing version branches and tags
c1838be565d Merge bitcoin-core/libmultiprocess#225: Improve and document act support
a173f1704ce Merge bitcoin-core/libmultiprocess#223: ci: Replace nix-shell with equivalent nix develop command
625eaca42fb Merge bitcoin-core/libmultiprocess#229: Design Documentation Update
cc234be73a6 Design doc update
81c652687b8 cmake: add ONLY_CAPNP target_capnp_sources option
6e01d2d766e Add versions.md and version.h files describing version branches and tags
4e3f8fa0d2c doc: add instructions for using act
81712ff6bbf ci: disable KVM and sandbox inside act containers
18a2237a8ef ci: Replace nix-shell with equivalent nix develop command

git-subtree-dir: src/ipc/libmultiprocess
git-subtree-split: 1fc65008f7d64161e84c08cbd93109a23dd6a1e9
2026-01-13 07:24:18 -05:00
Lőrinc
2f5b1c5f80
psbt: Fix PSBTInputSignedAndVerified bounds assert
The previous `assert` used `>=`, allowing `input_index == psbt.inputs.size()` and out-of-bounds access in `psbt.inputs[input_index]`.

Found during review: https://github.com/bitcoin/bitcoin/pull/31650#discussion_r2685892867
2026-01-13 12:58:53 +01:00
MarcoFalke
fa3df52712
bench: Require semicolon after BENCHMARK(foo)
This makes the code more consistent.

Also, use "using BenchFunction = ..." while touching the header.

Also, fixup the whitespace after and earlier scripted-diff.
2026-01-13 08:40:39 +01:00
MarcoFalke
fa8938f08c
bench: Remove incorrect __LINE__ in BENCHMARK macro
Duplicate benchmarks with the same name are not supported. Expanding the
name with __LINE__ is confusing and brittle, because it makes duplication
bugs silent.

Fix this twofold:

* By enforcing unique benchmarks at compile-time and link-time. For
  example, a link failure may now look like:
  "mold: error: duplicate symbol: bench_runner_AddrManAdd"
* By enforcing unique benchmarks at run-time. This should never happen,
  due to the build-failure, but a failure may look like:
  "Assertion `benchmarks().try_emplace(std::move(name), std::move(func)).second' failed."
2026-01-13 08:33:40 +01:00
MarcoFalke
fa51a28a94
scripted-diff: Remove priority_level from BENCHMARK macro
-BEGIN VERIFY SCRIPT-

 sed --in-place --regexp-extended 's/BENCHMARK\(([^,]+), benchmark::PriorityLevel::(HIGH|LOW)\)/BENCHMARK(\1)/g' $( git grep -l PriorityLevel )
 sed --in-place                   's/#define BENCHMARK(n, priority_level)/#define BENCHMARK(n)/g'                ./src/bench/bench.h

-END VERIFY SCRIPT-
2026-01-13 08:33:37 +01:00
MarcoFalke
fa790c3eea
bench: Remove -priority-level= option 2026-01-13 08:33:30 +01:00
Ava Chow
dd904298c1 gui: Show an error message if the restored wallet name is empty
The Restore Wallet dialog rejects wallet names that are empty, but was
doing so silently. This is confusing, we should be presenting an error
message to the user.
2026-01-12 15:40:01 -08:00
Pieter Wuille
da56ef239b clusterlin: minimize chunks (feature)
After the normal optimization process finishes, and finds an optimal
spanning forest, run a second process (while computation budget remains)
to split chunks into minimal equal-feerate chunks.
2026-01-12 17:38:30 -05:00
Matthew Zipkin
a0ca851d26
Make GetBindAddress() callable from outside net.cpp
The function logic is moved-only from net.cpp to netbase.cpp
and redeclared (as non-static) in netbase.h
2026-01-12 15:31:55 -05:00
Ryan Ofsky
796f18e559
Merge bitcoin/bitcoin#29415: Broadcast own transactions only via short-lived Tor or I2P connections
89372213048adf37a47427112a1ff836ee84c50e doc: add release notes for 29415 (Vasil Dimov)
582016fa5f013817db650bbba0a40d9195c18e2e test: add unit test for the private broadcast storage (Vasil Dimov)
e74d54e04896a86cad4e4b1bd9641afcc3a026c2 test: add functional test for private broadcast (Vasil Dimov)
818b780a05db126dcfe7efe12c46c84b5cfc3de6 rpc: use private broadcast from sendrawtransaction RPC if -privatebroadcast is ON (Vasil Dimov)
eab595f9cf13f7cb1d25a0db51409535cfe053b1 net_processing: retry private broadcast (Vasil Dimov)
37b79f9c39db5a4a61d360a6a29c8853bb5c7ac0 net_processing: stop private broadcast of a transaction after round-trip (Vasil Dimov)
2de53eee742da11b0e3f6fc44c39f2b5b5929da1 net_processing: handle ConnectionType::PRIVATE_BROADCAST connections (Vasil Dimov)
30a9853ad35365af8545e8e766d75cf398968480 net_processing: move a debug check in VERACK processing earlier (Vasil Dimov)
d1092e5d48ce67bd517068550c78bfcab062a554 net_processing: modernize PushNodeVersion() (Vasil Dimov)
9937a12a2fd5a0033f37f4dda5d75bfc5f15c3b6 net_processing: move the debug log about receiving VERSION earlier (Vasil Dimov)
a098f37b9e240291077a7f440e9f57e61f30e158 net_processing: reorder the code that handles the VERSION message (Vasil Dimov)
679ce3a0b8df6e8cab07965301382d2036ef2368 net_processing: store transactions for private broadcast in PeerManager (Vasil Dimov)
a3faa6f944a672faccac5dd201c8d33a638d9091 node: extend node::TxBroadcast with a 3rd option (Vasil Dimov)
95c051e21051bd469fda659fe7c495d5e264d221 net_processing: rename RelayTransaction() to better describe what it does (Vasil Dimov)
bb49d26032c57714c62a4b31ff1fdd969751683f net: implement opening PRIVATE_BROADCAST connections (Vasil Dimov)
01dad4efe2b38b7a71c96b6222147f395e0c11d9 net: introduce a new connection type for private broadcast (Vasil Dimov)
94aaa5d31b6ff1d0122319fc70e70a7e27e1a0ba init: introduce a new option to enable/disable private broadcast (Vasil Dimov)
d6ee490e0a9a81b69a4751087918303163ba8869 log: introduce a new category for private broadcast (Vasil Dimov)

Pull request description:

  _Parts of this PR are isolated in independent smaller PRs to ease review:_

  * [x] _https://github.com/bitcoin/bitcoin/pull/29420_
  * [x] _https://github.com/bitcoin/bitcoin/pull/33454_
  * [x] _https://github.com/bitcoin/bitcoin/pull/33567_
  * [x] _https://github.com/bitcoin/bitcoin/pull/33793_

  ---

  To improve privacy, broadcast locally submitted transactions (from the `sendrawtransaction` RPC) to the P2P network only via Tor or I2P short-lived connections, or to IPv4/IPv6 peers but through the Tor network.

  * Introduce a new connection type for private broadcast of transactions with the following properties:
    * started whenever there are local transactions to be sent
    * opened to Tor or I2P peers or IPv4/IPv6 via the Tor proxy
    * opened regardless of max connections limits
    * after handshake is completed one local transaction is pushed to the peer, `PING` is sent and after receiving `PONG` the connection is closed
    * ignore all incoming messages after handshake is completed (except `PONG`)

  * Broadcast transactions submitted via `sendrawtransaction` using this new mechanism, to a few peers. Keep doing this until we receive back this transaction from one of our ordinary peers (this takes about 1 second on mainnet).

  * The transaction is stored in peerman and does not enter the mempool.

  * Once we get an `INV` from one of our ordinary peers, then the normal flow executes: we request the transaction with `GETDATA`, receive it with a `TX` message, put it in our mempool and broadcast it to all our existent connections (as if we see it for the first time).

  * After we receive the full transaction as a `TX` message, in reply to our `GETDATA` request, only then consider the transaction has propagated through the network and remove it from the storage in peerman, ending the private broadcast attempts.

  The messages exchange should look like this:

  ```
  tx-sender >--- connect -------> tx-recipient
  tx-sender >--- VERSION -------> tx-recipient (dummy VERSION with no revealing data)
  tx-sender <--- VERSION -------< tx-recipient
  tx-sender <--- WTXIDRELAY ----< tx-recipient (maybe)
  tx-sender <--- SENDADDRV2 ----< tx-recipient (maybe)
  tx-sender <--- SENDTXRCNCL ---< tx-recipient (maybe)
  tx-sender <--- VERACK --------< tx-recipient
  tx-sender >--- VERACK --------> tx-recipient
  tx-sender >--- INV/TX --------> tx-recipient
  tx-sender <--- GETDATA/TX ----< tx-recipient
  tx-sender >--- TX ------------> tx-recipient
  tx-sender >--- PING ----------> tx-recipient
  tx-sender <--- PONG ----------< tx-recipient
  tx-sender disconnects
  ```

  Whenever a new transaction is received from `sendrawtransaction` RPC, the node will send it to a few (`NUM_PRIVATE_BROADCAST_PER_TX`) recipients right away. If after some time we still have not heard anything about the transaction from the network, then it will be sent to 1 more peer (see `PeerManagerImpl::ReattemptPrivateBroadcast()`).

  A few considerations:
  * The short-lived private broadcast connections are very cheap and fast wrt network traffic. It is expected that some of those peers could blackhole the transaction. Just one honest/proper peer is enough for successful propagation.
  * The peers that receive the transaction could deduce that this is initial transaction broadcast from the transaction originator. This is ok, they can't identify the sender.

  ---

  <details>
  <summary>How to test this?</summary>

  Thank you, @stratospher and @andrewtoth!

  Start `bitcoind` with `-privatebroadcast=1 -debug=privatebroadcast`.

  Create a wallet and get a new address, go to the Signet faucet and request some coins to that address:
  ```bash
  build/bin/bitcoin-cli -chain="signet" createwallet test
  build/bin/bitcoin-cli -chain="signet" getnewaddress
  ```

  Get a new address for the test transaction recipient:
  ```bash
  build/bin/bitcoin-cli -chain="signet" loadwallet test
  new_address=$(build/bin/bitcoin-cli -chain="signet" getnewaddress)
  ```

  Create the transaction:
  ```bash
  # Option 1: `createrawtransaction` and `signrawtransactionwithwallet`:

  txid=$(build/bin/bitcoin-cli -chain="signet" listunspent | jq -r '.[0] | .txid')
  vout=$(build/bin/bitcoin-cli -chain="signet" listunspent | jq -r '.[0] | .vout')
  echo "txid: $txid"
  echo "vout: $vout"

  tx=$(build/bin/bitcoin-cli -chain="signet" createrawtransaction "[{\"txid\": \"$txid\", \"vout\": $vout}]" "[{\"$new_address\": 0.00001000}]" 0 false)
  echo "tx: $tx"

  signed_tx=$(build/bin/bitcoin-cli -chain="signet" signrawtransactionwithwallet "$tx" | jq -r '.hex')
  echo "signed_tx: $signed_tx"

  # OR Option 2: `walletcreatefundedpsbt` and `walletprocesspsbt`:
  # This makes it not have to worry about inputs and also automatically sends back change to the wallet.
  # Start `bitcoind` with `-fallbackfee=0.00003000` for instance for 3 sat/vbyte fee.

  psbt=$(build/bin/bitcoin-cli -chain="signet" walletcreatefundedpsbt "[]" "[{\"$new_address\": 0.00001000}]" | jq -r '.psbt')
  echo "psbt: $psbt"

  signed_tx=$(build/bin/bitcoin-cli -chain="signet" walletprocesspsbt "$psbt" | jq -r '.hex')
  echo "signed_tx: $signed_tx"
  ```

  Finally, send the transaction:
  ```bash
  raw_tx=$(build/bin/bitcoin-cli -chain="signet" sendrawtransaction "$signed_tx")
  echo "raw_tx: $raw_tx"
  ```

  </details>

  ---

  <details>
  <summary>High-level explanation of the commits</summary>

  * New logging category and config option to enable private broadcast
    * `log: introduce a new category for private broadcast`
    * `init: introduce a new option to enable/disable private broadcast`

  * Implement the private broadcast connection handling on the `CConnman` side:
    * `net: introduce a new connection type for private broadcast`
    * `net: implement opening PRIVATE_BROADCAST connections`

  * Prepare `BroadcastTransaction()` for private broadcast requests:
    * `net_processing: rename RelayTransaction to better describe what it does`
    * `node: extend node::TxBroadcast with a 3rd option`
    * `net_processing: store transactions for private broadcast in PeerManager`

  * Implement the private broadcast connection handling on the `PeerManager` side:
    * `net_processing: reorder the code that handles the VERSION message`
    * `net_processing: move the debug log about receiving VERSION earlier`
    * `net_processing: modernize PushNodeVersion()`
    * `net_processing: move a debug check in VERACK processing earlier`
    * `net_processing: handle ConnectionType::PRIVATE_BROADCAST connections`
    * `net_processing: stop private broadcast of a transaction after round-trip`
    * `net_processing: retry private broadcast`

  * Engage the new functionality from `sendrawtransaction`:
    * `rpc: use private broadcast from sendrawtransaction RPC if -privatebroadcast is ON`

  * New tests:
    * `test: add functional test for private broadcast`
    * `test: add unit test for the private broadcast storage`

  </details>

  ---

  **This PR would resolve the following issues:**
  https://github.com/bitcoin/bitcoin/issues/3828 Clients leak IPs if they are recipients of a transaction
  https://github.com/bitcoin/bitcoin/issues/14692 Can't configure bitocoind to only send tx via Tor but receive clearnet transactions
  https://github.com/bitcoin/bitcoin/issues/19042 Tor-only transaction broadcast onlynet=onion alternative
  https://github.com/bitcoin/bitcoin/issues/24557 Option for receive events with all networks, but send transactions and/or blocks only with anonymous network[s]?
  https://github.com/bitcoin/bitcoin/issues/25450 Ability to broadcast wallet transactions only via dedicated oneshot Tor connections
  https://github.com/bitcoin/bitcoin/issues/32235 Tor: TX circuit isolation

  **Issues that are related, but (maybe?) not to be resolved by this PR:**
  https://github.com/bitcoin/bitcoin/issues/21876 Broadcast a transaction to specific nodes
  https://github.com/bitcoin/bitcoin/issues/28636 new RPC: sendrawtransactiontopeer

  ---

  Further extensions:
  * Have the wallet do the private broadcast as well, https://github.com/bitcoin/bitcoin/issues/11887 would have to be resolved.
  * Have the `submitpackage` RPC do the private broadcast as well, [draft diff in the comment below](https://github.com/bitcoin/bitcoin/pull/29415#pullrequestreview-2972293733), thanks ismaelsadeeq!
  * Add some stats via RPC, so that the user can better monitor what is going on during and after the broadcast. Currently this can be done via the debug log, but that is not convenient.
  * Make the private broadcast storage, currently in peerman, persistent over node restarts.
  * Add (optional) random delay before starting to broadcast the transaction in order to avoid correlating unrelated transactions based on the time when they were broadcast. Suggested independently of this PR [here](https://github.com/bitcoin/bitcoin/issues/30471).
  * Consider periodically sending transactions that did not originate from the node as decoy, discussed [here](https://github.com/bitcoin/bitcoin/pull/29415#discussion_r2035414972).
  * Consider waiting for peer's FEEFILTER message and if the transaction that was sent to the peer is below that threshold, then assume the peer is going to drop it. Then use this knowledge to retry more aggressively with another peer, instead of the current 10 min. See [comment below](https://github.com/bitcoin/bitcoin/pull/29415#issuecomment-3258611648).
  * It may make sense to be able to override the default policy -- eg so submitrawtransaction can go straight to the mempool and relay, even if txs are normally privately relayed. See [comment below](https://github.com/bitcoin/bitcoin/pull/29415#issuecomment-3427086681).
  * As a side effect we have a new metric available - the time it takes for a transaction to reach a random node in the network (from the point of view of the private broadcast recipient the tx originator is a random node somewhere in the network). This can be useful for monitoring, unrelated to privacy characteristics of this feature.

  ---

  _A previous incarnation of this can be found at https://github.com/bitcoin/bitcoin/pull/27509. It puts the transaction in the mempool and (tries to) hide it from the outside observers. This turned out to be too error prone or maybe even impossible._

ACKs for top commit:
  l0rinc:
    code review diff ACK 89372213048adf37a47427112a1ff836ee84c50e
  andrewtoth:
    ACK 89372213048adf37a47427112a1ff836ee84c50e
  pinheadmz:
    ACK 89372213048adf37a47427112a1ff836ee84c50e
  w0xlt:
    ACK 8937221304 with nit https://github.com/bitcoin/bitcoin/pull/29415#discussion_r2654849875
  mzumsande:
    re-ACK 89372213048adf37a47427112a1ff836ee84c50e

Tree-SHA512: d51dadc865c2eb080c903cbe2f669e69a967e5f9fc64e9a20a68f39a67bf0db6ac2ad682af7fa24ef9f0942a41c89959341a16ba7b616475e1c5ab8e563b9b96
2026-01-12 15:02:14 -05:00
Lőrinc
557b41a38c
validation: make IsInitialBlockDownload() lock-free
`ChainstateManager::IsInitialBlockDownload()` is queried on hot paths and previously acquired `cs_main` internally, contributing to lock contention.

Cache the IBD status in `m_cached_is_ibd`, and introduce `ChainstateManager::UpdateIBDStatus()` to latch it once block loading has finished and the current chain tip has enough work and is recent.
Call the updater after tip updates and after `ImportBlocks()` completes.

Since `IsInitialBlockDownload()` no longer updates the cache, drop `mutable` from `m_cached_is_ibd` and only update it from `UpdateIBDStatus()` under `cs_main`.

Update the new unit test to showcase the new `UpdateIBDStatus()`.

Co-authored-by: Patrick Strateman <patrick.strateman@gmail.com>
Co-authored-by: Martin Zumsande <mzumsande@gmail.com>
2026-01-12 16:57:20 +01:00
Lőrinc
b9c0ab3b75
chain: add CChain::IsTipRecent helper
Factor the chain tip work/recency check out of `ChainstateManager::IsInitialBlockDownload()` into a reusable `CChain::IsTipRecent()` helper, and annotate it as requiring `cs_main` since it's reading mutable state.

Also introduce a local `chainman_ref` in the kernel import-blocks wrapper to reduce repetition and keep follow-up diffs small.

`IsInitialBlockDownload` returns were also unified to make the followup move clean.

Co-authored-by: Patrick Strateman <patrick.strateman@gmail.com>
Co-authored-by: Martin Zumsande <mzumsande@gmail.com>
2026-01-12 16:56:01 +01:00
Lőrinc
8d531c6210
validation: invert m_cached_finished_ibd to m_cached_is_ibd
Rename and invert the internal IBD latch so the cached value directly matches `IsInitialBlockDownload()` (true while in IBD, then latched to false).

This is a behavior-preserving refactor to avoid double negatives.
2026-01-12 16:54:11 +01:00
Lőrinc
8be54e3b19
test: cover IBD exit conditions
Add a unit test that exercises the `IsInitialBlockDownload()` decision matrix by varying the cached latch, `BlockManager::LoadingBlocks()`, and tip work/recency inputs.

This documents the current latching behavior and provides a baseline for later refactors.
2026-01-12 16:48:09 +01:00
Andrew Toth
2ee7f9b259
coins: assume GetCoin only returns unspent coins
`CCoinsViewCache::FetchCoin()` had special handling for a spent `Coin` returned by the parent view.
Production parents (`CCoinsViewCache` and `CCoinsViewDB`) do not return spent coins, so this path is unreachable.

Replace it with an `Assume(!coin.IsSpent())`, drop outdated documentation about spent+FRESH cache entries, and simplify `SanityCheck()` to assert the remaining possible state invariants.
This is safe because it does not change behavior for valid backends and will fail fast if the `GetCoin()` contract is violated.

Co-authored-by: Lőrinc <pap.lorinc@gmail.com>
2026-01-11 21:32:52 +01:00
ismaelsadeeq
1412b779ad
refactor: execute PackageMempoolChecks during package rbf only
- No need to jump into the next subroutine when there is no conflict.

- This makes it clear why it is necessary to have two calls of
  CheckMempoolPolicyLimts in both PackageMempoolChecks and after in
  AcceptMultipleTransactionsInternal, there is a possibilty that we
  we want to accept multiple transaction but they are not conflicting
  with any in-mempool transaction, in that case also we want to check
  that they do not bust the cluster limits.
2026-01-09 19:23:13 +00:00
Greg Sanders
4c7cfd37ad wallet: remove erroneous-on-reorg Assume() 2026-01-09 08:41:37 -05:00
merge-script
5c724f3b04
Merge bitcoin/bitcoin#34235: miniminer: stop assuming ancestor fees >= self fees
2cade5d5d17010cd89855b26da350d6e54683805 [miniminer] stop assuming ancestor fees >= self fees (glozow)

Pull request description:

  These assertions exist to detect double-deducting values when we update descendants. However, negative fees are possible with `prioritisetransaction` so it doesn't make sense to check this.

  Leave the check for sizes because those are never negative.

  Fixes #34234

ACKs for top commit:
  instagibbs:
    ACK 2cade5d5d17010cd89855b26da350d6e54683805
  dergoegge:
    utACK 2cade5d5d17010cd89855b26da350d6e54683805

Tree-SHA512: 935bbc8bd9a0d508eea43bb49aa43c22735e3f2c1012598f6843e229c13b76e44f9fd3eb8b61c437fa0b32353b4e7b15afa3e31002bdfa382d3d711d16419fde
2026-01-09 11:24:03 +00:00
sedited
997e7b4d7c
init: Fix non-zero code on interrupt
An interrupt does not create a failure exit code during normal
operation. This should also be the case when interrupt is triggered
during initialization. However a failure exit code is currently returned
if an interrupt occurs during init. Fix this by making `AppInitMain` return
true instead of false, which further up the call stack sets the
`EXIT_FAILURE` code. Also add a check for the interrupt condition during
GUI startup.
2026-01-08 20:08:21 +01:00
Hennadii Stepanov
6c3fb719d1
Merge bitcoin-core/gui#921: Remove deprecated "Starting Block" from Peer Detail
301d9eea66cadffe2872776b8a0e9b72ec90b9a2 qt: Remove "Starting Block" from Peer Detail. Following Deprecation in `bitcoin#34197` (WakeTrainDev)

Pull request description:

  the `startingheight` rpc field got deprecated in https://github.com/bitcoin/bitcoin/pull/34197
  this pr removes it from peer detail

ACKs for top commit:
  maflcko:
    review lgtm ACK 301d9eea66cadffe2872776b8a0e9b72ec90b9a2
  theStack:
    ACK 301d9eea66cadffe2872776b8a0e9b72ec90b9a2
  hebasto:
    ACK 301d9eea66cadffe2872776b8a0e9b72ec90b9a2, I verified `forms/debugwindow.ui` using Qt Designer.

Tree-SHA512: b870b4cff8ead073a17d171c01c46fc7e750c0343b4578ffb63abc8f40b33abdf08beb6733fead5307ef5d48b078b60d29ac0e0e41190a98f50f92154f0878cf
2026-01-08 17:51:29 +00:00
glozow
2cade5d5d1 [miniminer] stop assuming ancestor fees >= self fees
Negative fees are possible with prioritisetransaction.
2026-01-08 07:55:27 -08:00
MarcoFalke
fa8d56f9f0
fuzz: Reject too large descriptor leaf sizes in scriptpubkeyman target 2026-01-08 14:26:29 +01:00
MarcoFalke
fabac1b395
fuzz: Reject some more "expensive" descriptors in the scriptpubkeyman target
The same are rejected in the descriptor_parse target, so it makes sense
to reject them here as well.
2026-01-08 14:26:23 +01:00
MarcoFalke
333333356f
fuzz: [refactor] Use std::span over FuzzBufferType in descriptor utils
They are exactly the same, but the descriptor utils should not prescribe
to use the FuzzBufferType. Using a dedicated type for them clarifies
that the utils are not tied to FuzzBufferType.

Also, while touching the lines, use `const` only where it is meaningful.
2026-01-08 12:18:01 +01:00
merge-script
cd6e4c9235
Merge bitcoin/bitcoin#34215: wallettool: fix unnamed createfromdump failure walletsdir deletion
f78f6f1dc8e16d5a8a23749e77bc3bf17c91ae42 wallettool: do not use fs::remove_all in createfromdump cleanup (Ava Chow)

Pull request description:

  As pointed out in https://github.com/bitcoin/bitcoin/pull/34156#issuecomment-3716728670, it is possible for `createfromdump` to also accidentally delete the entire wallets directory if the wallet name is the empty string and the dumpfile contains a checksum error.

  This is also fixed by removing the files created by only removing the directory for named wallets, and avoiding the use of `fs::remove_all`.

ACKs for top commit:
  waketraindev:
    lgtm ACK f78f6f1dc8e16d5a8a23749e77bc3bf17c91ae42
  polespinasa:
    code review and tACK f78f6f1dc8e16d5a8a23749e77bc3bf17c91ae42
  rkrux:
    Code review and tACK f78f6f1dc8e16d5a8a23749e77bc3bf17c91ae42
  willcl-ark:
    ACK f78f6f1dc8e16d5a8a23749e77bc3bf17c91ae42
  pablomartin4btc:
    ACK f78f6f1dc8e16d5a8a23749e77bc3bf17c91ae42

Tree-SHA512: ff1e7668131ec3632c67d990c99e8fddff28605e7e553c7e20695e61017c88476c3636e22f2007e763a00d527e80e4d1d3d45409f6678d28729b8397430bfe7a
2026-01-07 14:32:01 +00:00
merge-script
90d651a81f
Merge bitcoin/bitcoin#34156: wallet: fix unnamed legacy wallet migration failure
b7c34d08dd9549a95cffc6ec1ffa4bb4f81e35eb test: coverage for migration failure when last sync is beyond prune height (furszy)
82caa8193a3e36f248dcc949e0cd41def191efac wallet: migration, fix watch-only and solvables wallets names (furszy)
d70b159c42008ac3b63d1c43d99d4f1316d2f1ef wallet: improve post-migration logging (furszy)
f011e0f0680a8c39988ae57dae57eb86e92dd449 test: restorewallet, coverage for existing dirs, unnamed wallet and prune failure (furszy)
36093bde63286e19821a9e62cdff1712b6245dc7 test: add coverage for unnamed wallet migration failure (furszy)
f4c7e28e80bf9af50b03a770b641fd309a801589 wallet: fix unnamed wallet migration failure (furszy)
4ed0693a3f2a427ef9e7ad016930ec29fa244995 wallet: RestoreWallet failure, erase only what was created (furszy)

Pull request description:

  Minimal fix for #34128.

  The issue occurs during the migration of a legacy unnamed wallet
  (the legacy "default" wallet). When the migration fails, the cleanup
  logic is triggered to roll back the state, which involves erasing the
  newly created descriptor wallets directories. Normally, this only
  affects the parent directories of named wallets, since they each
  reside in their own directories. However, because the unnamed
  wallet resides directly in the top-level `/wallets/` folder, this
  logic accidentally deletes the main directory.

  The fix ensures that only the wallet.dat file of the unnamed wallet
  is touched and restored, preserving the wallet in BDB format and
  leaving the main `/wallets/` directory intact.

  #### Story Line:
  #32273 fixed a different set of issues and, in doing so, uncovered
  this one.
  Before the mentioned PR, backups were stored in the same directory
  as the wallet.dat file. On a migration failure, the backup was then
  copied to the top-level `/wallets/` directory. For the unnamed legacy
  wallet, the wallet directory is the `/wallets/` directory, so the source
  and destination paths were identical. As a result, we threw early in the
  `fs::copy_file` call ([here](https://github.com/bitcoin/bitcoin/blob/29.x/src/wallet/wallet.cpp#L4572)) because the file already existed, as we
  were trying to copy the file onto itself. This caused the cleanup logic
  to abort early on and never reach the removal line.

  #### Testing Notes:
  Cherry-pick the test commit on top of master and run it. You will
  see the failure and realize the reason by reading the test code.

ACKs for top commit:
  achow101:
    ACK b7c34d08dd9549a95cffc6ec1ffa4bb4f81e35eb
  davidgumberg:
    crACK b7c34d08dd
  w0xlt:
    ACK b7c34d08dd
  willcl-ark:
    ACK b7c34d08dd9549a95cffc6ec1ffa4bb4f81e35eb

Tree-SHA512: d0be14c0ed6417f999c3f2f429652c2407097d0cc18453c91653e57ae4b5375b327ad3b2553d9ea6ff46a3ae00cdbd5ab325b94eba763072c4fc5a773b85618b
2026-01-07 11:08:57 +00:00
Novo
ed945a6854 walletrpc: reject listdes with priv key on w-only wallets 2026-01-07 10:44:43 +01:00
Novo
9e5e9824f1 descriptor: ToPrivateString() pass if at least 1 priv key exists
- Refactor Descriptor::ToPrivateString() to allow descriptors with
  missing private keys to be printed. Useful in descriptors with
  multiple keys e.g tr() etc.
- The existing behaviour of listdescriptors is preserved as much as
  possible, if no private keys are availablle ToPrivateString will
  return false
2026-01-07 10:44:38 +01:00
Novo
5c4db25b61 descriptor: refactor ToPrivateString for providers
This commit modifies the Pubkey providers to return the public string
if private data is not available.
This is setup for a future commit to make Descriptor::ToPrivateString
return strings with missing private key information.

Co-authored-by: rkrux <rkrux.connect@gmail.com>
2026-01-07 09:40:33 +01:00
Novo
2dc74e3f4e wallet/migration: use HavePrivateKeys in place of ToPrivateString
ToPrivateString() behaviour will be modified in the following commits.

In order to keep the scope of this PR limited to the RPC behaviour,
this commit updates wallet migration to use 'Descriptor::HavePrivateKeys()'
in place of 'Descriptor::ToPrivateString()' to determine watchonly descriptors.

A follow-up PR can be opened to update migration logic to exclude
descriptors with some private keys from the watchonly migration wallet.
2026-01-07 09:36:18 +01:00
Novo
e842eb90bb descriptors: add HavePrivateKeys()
Previously, to determine if a desc is watchonly, `ToPrivateString()`, was used.
It returns `false` if there is at least one pubkey in the descriptor for which
the provider  does not have a private key.

ToPrivateString() behaviour will change in the following commits to only
return `false` if no priv keys could be found for the pub keys in the descriptor.

HavePrivateKeys() is added here to replace the use of ToPrivateString() for determining
if a descriptor is 'watchonly'.

Co-authored-by: rkrux <rkrux.connect@gmail.com>
2026-01-07 09:34:15 +01:00
Ava Chow
f78f6f1dc8 wallettool: do not use fs::remove_all in createfromdump cleanup 2026-01-06 16:11:41 -08:00
Ava Chow
a9daa6dbd3
Merge bitcoin/bitcoin#34135: rpc: [wallet] Use unsigned type for tx version in sendall
fafbc70d48e1fb42c4ed3da609e5f30c4cc39418 rpc: [wallet] Use unsigned type for tx version in sendall (MarcoFalke)

Pull request description:

  It is confusing to parse the unsigned tx version as a signed type. Also, it makes it harder to use the integer sanitizer.

  Can be tested via:

  * Build with the flags `-DCMAKE_C_COMPILER='clang' -DCMAKE_CXX_COMPILER='clang++' -DSANITIZERS=undefined,integer,float-divide-by-zero`
  * Set the existing suppressions: `export UBSAN_OPTIONS="suppressions=$(pwd)/test/sanitizer_suppressions/ubsan:print_stacktrace=1:halt_on_error=0:report_error_type=1"`
  * Start the RPC server, e.g. `./bld-cmake/bin/bitcoin-qt -datadir=/tmp -regtest -server`
  * Call the sendall RPC, e.g. `./bld-cmake/bin/bitcoin-cli -datadir=/tmp -regtest -named sendall '["bcrt1qlrt3xps4wxpfcjmljrayr2ualczmnfvd4vzdq3"]' fee_rate=1.234  version=-1`

  Before:

  ```
  src/wallet/rpc/spend.cpp:1470:42: runtime error: implicit conversion from type 'int' of value -1 (32-bit, signed) to type 'uint32_t' (aka 'unsigned int') changed the value to 4294967295 (32-bit, unsigned)

  Invalid parameter, version out of range(1~3)
  ```

  After:

  ```
  JSON integer out of range

ACKs for top commit:
  bensig:
    ACK fafbc70d48e1fb42c4ed3da609e5f30c4cc39418
  achow101:
    ACK fafbc70d48e1fb42c4ed3da609e5f30c4cc39418
  rkrux:
    utACK fafbc70d48e1fb42c4ed3da609e5f30c4cc39418
  theStack:
    ACK fafbc70d48e1fb42c4ed3da609e5f30c4cc39418

Tree-SHA512: bb7cf54e9691ad2591646b138ffdfac95bf77c5234d489f4e4f2c60b41bdc14cdc18a030fecb0a6ac64e55e4c69b37835afd334f87d8a44b8df6cda053e8fefb
2026-01-06 15:58:25 -08:00
w0xlt
a3c71c7201 [test] Add BIP 328 test vectors for Musig2 2026-01-06 15:53:56 -08:00
furszy
82caa8193a
wallet: migration, fix watch-only and solvables wallets names
Because the default wallet has no name, the watch-only and solvables
wallets created during migration end up having no name either.

This fixes it by applying the same prefix name we use for the backup
file for an unnamed default wallet.

Before: watch-only wallet named "_watchonly"
After:  watch-only wallet named "default_wallet_watchonly"
2026-01-06 14:38:14 -05:00
furszy
d70b159c42
wallet: improve post-migration logging
Right now, after migration the last message users see is "migration completed",
but the migration isn't actually finished yet. We still need to load the new wallets
to ensure consistency, and if that fails, the migration will be rolled back. This
can be confusing for users.

This change logs the post-migration loading step and if a wallet fails to load and
the migration will be rolled back.
2026-01-06 14:38:14 -05:00
furszy
f4c7e28e80
wallet: fix unnamed wallet migration failure
When migrating any legacy unnamed wallet, a failed migration would
cause the cleanup logic to remove its parent directory. Since this
type of legacy wallet lives directly in the main '/wallets/' folder,
this resulted in unintentionally erasing all wallets, including the
backup file.

To be fully safe, we will no longer call `fs::remove_all`. Instead,
we only erase the individual db files we have created, leaving
everything else intact. The created wallets parent directories are
erased only if they are empty.
As part of this last change, `RestoreWallet` was modified to allow
an existing directory as the destination, since we no longer remove
the original wallet directory (we only remove the files we created
inside it). This also fixes the restore of top-level default wallets
during failures, which were failing due to the directory existence
check that always returns true for the /wallets/ directory.

This bug started after:
f6ee59b6e2
Previously, the `fs::copy_file` call was failing for top-level wallets,
which prevented the `fs::remove_all` call from being reached.
2026-01-06 14:38:13 -05:00
furszy
4ed0693a3f
wallet: RestoreWallet failure, erase only what was created
Track what RestoreWallet creates so only those files and directories
are removed during a failure and nothing else. Preexisting paths
must be left untouched.

Note:
Using fs::remove_all() instead of fs::remove() in RestoreWallet does
not cause any problems currently, but the change is necessary for the
next commit which extends RestoreWallet to work with existing directories,
which may contain files that must not be deleted.
2026-01-06 14:02:06 -05:00
merge-script
c60f9cb66e
Merge bitcoin/bitcoin#34085: cluster mempool: exploit SFL properties in txgraph
1808b5aaf7c4910122fcd088e03d790189907438 clusterlin: remove unused FixLinearization (cleanup) (Pieter Wuille)
34a77138b7a6f65a31c6273f2770e943cc0b474b txgraph: permit non-topological clusters to defer fixing (optimization) (Pieter Wuille)
3380e0cbb59b2a893faabfa8f9aa18e582a11c2f txgraph: use PostLinearize less prior to linearizing (Pieter Wuille)
62dd88624a7fba14d2dac32d94fd101eb378d1e7 txgraph: drop NEEDS_SPLIT_ACCEPTABLE (simplification) (Pieter Wuille)
01ffcf464a4679136185e323b5b0328695a5bd1e clusterlin: support fixing linearizations (feature) (Pieter Wuille)

Pull request description:

  Part of #30289, follow-up to #32545.

  This gets rid of `FixLinearization()` by integrating the functionality into `Linearize()`, and makes txgraph exploit that (by delaying fixing of clusters until their first re-linearization). It also reduces (but does not eliminate) the number of calls to `PostLinearize`, as the SFL linearization effectively performs something very similar to postlinearization when loading in an existing linearization already.

ACKs for top commit:
  instagibbs:
    reACK 1808b5aaf7c4910122fcd088e03d790189907438
  marcofleon:
    code review ACK 1808b5aaf7c4910122fcd088e03d790189907438

Tree-SHA512: 81cd9549de2968f5126079cbb532e2cb052ea8157c9c9ce37fd39ad2294105d7c79ee8d946c3d8f7af5b2119299a232c448b42a33e1e43ccc778a5b52957e387
2026-01-06 15:51:45 +00:00
Andrew Toth
eec551aaf1
fuzz: keep coinscache_sim backend free of spent coins
`CoinsViewBottom` roughly simulates a memory-backed `CCoinsViewDB`, which never stores spent coins.

Stop returning spent coins from `GetCoin()`, erase spent entries in `BatchWrite()`, and tighten comparisons to expect `std::nullopt` when the simulator has no coin.

Co-authored-by: Lőrinc <pap.lorinc@gmail.com>
2026-01-06 12:16:46 +01:00