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778 commits

Author SHA1 Message Date
furszy
cdf185ccfb
wallet: remove unused IsSpentKey(hash, index) method 2022-06-08 11:22:40 -03:00
furszy
3d8a282257
wallet: decouple IsSpentKey(scriptPubKey) from IsSpentKey(hash, n)
This will be used in a follow-up commit to prevent extra 'GetWalletTx' lookups if the function caller already have the wtx and can just provide the scriptPubKey directly.
2022-06-08 11:22:39 -03:00
furszy
a06fa94ff8
wallet: IsSpent, 'COutPoint' arg instead of (hash, index) 2022-06-08 11:22:39 -03:00
furszy
91902b7720
wallet: IsLockedCoin, 'COutPoint' arg instead of (hash, index) 2022-06-08 10:26:48 -03:00
Hennadii Stepanov
a55db4ea1c
Add more proper thread safety annotations 2022-05-16 20:51:40 +02:00
Hennadii Stepanov
8cfe93e3fc
Add proper thread safety annotation to CWallet::GetTxConflicts() 2022-05-16 20:51:39 +02:00
Andrew Chow
606ce05ec2
Merge bitcoin/bitcoin#18554: wallet: ensure wallet files are not reused across chains
5f213213cb tests: add tests for cross-chain wallet use prevention (Seibart Nedor)
968765973b wallet: ensure wallet files are not reused across chains (Seibart Nedor)

Pull request description:

  This implements a proposal in #12805 and is a rebase of #14533.

  This seems to be a working approach, but I'm not sure why the `p2p_segwit.py` functional test needed a change, so I'll look into it more.

ACKs for top commit:
  achow101:
    ACK 5f213213cb
  dongcarl:
    Code Review ACK 5f213213cb
  [deleted]:
    tACK 5f213213cb

Tree-SHA512: 2c934300f113e772fc31c16ef5588526300bbc36e4dcef7d77bd0760c5c8f0ec77f766b1bed5503eb0157fa26dc900ed54d2ad1b41863c1f736ce5c1f3b67bec
2022-04-28 15:59:47 -04:00
Martin Zumsande
2052e3aa9a wallet: ignore chainStateFlushed notifications while attaching chain 2022-04-26 10:12:46 +02:00
Hennadii Stepanov
aeee419c6a
wallet, refactor: Add wallet::NotifyWalletLoaded() function
This change is a prerequisite for the following bugfix.
2022-03-29 22:33:58 +02:00
MarcoFalke
f66c827c2d
Merge bitcoin/bitcoin#24502: wallet: don't create long chains by default
da2bc865d6 [wallet] don't create long chains by default (glozow)

Pull request description:

  Default mempool policy doesn't let you have chains longer than 25 transactions. This is locally configurable of course, but it's not really safe to assume that a chain longer than 25 transactions will propagate. Thus, the wallet should probably avoid creating such transactions by default; set `DEFAULT_WALLET_REJECT_LONG_CHAINS` to true.

  Closes #9752
  Closes #10004

ACKs for top commit:
  MarcoFalke:
    re-ACK da2bc865d6 only change is fixing typos in tests 🎏

Tree-SHA512: 65d8e4ec437fe928adf554aa7e819a52e0599b403d5310895f4e371e99bbc838219b3097c4d2f775bc870ac617ef6b4227b94291f2b376f824f14e8f2b152f31
2022-03-25 17:16:13 +01:00
glozow
da2bc865d6 [wallet] don't create long chains by default 2022-03-25 16:02:37 +00:00
MarcoFalke
fa61cdf464
wallet: Fix coinselection include
coinselection.h is not used by wallet.h but by qt/coincontroldialog.cpp
2022-03-25 09:57:42 +01:00
Seibart Nedor
968765973b wallet: ensure wallet files are not reused across chains 2022-02-16 15:02:26 +02:00
Andrew Chow
808068e90e wallet: Allow user specified input size to override
If the user specifies an input size, allow it to override any input size
calculations during coin selection.
2022-01-24 11:23:31 -05:00
MarcoFalke
c561f2f06e
Merge bitcoin/bitcoin#23497: Add src/node/ and src/wallet/ code to node:: and wallet:: namespaces
e5b6aef612 Move CBlockFileInfo::ToString method where class is declared (Russell Yanofsky)
f7086fd8ff Add src/wallet/* code to wallet:: namespace (Russell Yanofsky)
90fc8b089d Add src/node/* code to node:: namespace (Russell Yanofsky)

Pull request description:

  There are no code changes, this is just adding `namespace` and `using` declarations and `node::` or `wallet::` qualifiers in some places.

  Motivations for this change are:

  - To make it easier to see when node and wallet code is being accessed places where it shouldn't be. For example if GUI code is accessing node and wallet internals or if wallet and node code are referencing each other.
  - To make source code organization clearer ([#15732](https://github.com/bitcoin/bitcoin/issues/15732)), being able to know that `wallet::` code is in `src/wallet/`, `node::` code is in `src/node/`, `init::` code is in `src/init/`, `util::` code is in `src/util/`, etc.

  Reviewing with `git log -p -n1 -U0 --word-diff-regex=.` can be helpful to verify this is only updating declarations, not changing code.

ACKs for top commit:
  achow101:
    ACK e5b6aef612
  MarcoFalke:
    Concept ACK e5b6aef612 🍨

Tree-SHA512: 3797745c90246794e2d55a2ee6e8b0ad5c811e4e03a242d3fdfeb68032f8787f0d48ed4097f6b7730f540220c0af99ef423cd9dbe7f76b2ec12e769a757a2c8d
2022-01-11 11:11:00 +01:00
Hennadii Stepanov
3a45dc36a6
Change type of backup_file parameter in RestoreWallet/restoreWallet
`fs::path` looks more native than `std::string` for a parameter which
represents a backup file. This change eliminates back-and-forth type
conversions.
2022-01-11 00:00:00 +02:00
Russell Yanofsky
f7086fd8ff Add src/wallet/* code to wallet:: namespace 2022-01-06 22:14:16 -05:00
Hennadii Stepanov
f47dda2c58
scripted-diff: Bump copyright headers
-BEGIN VERIFY SCRIPT-
./contrib/devtools/copyright_header.py update ./
-END VERIFY SCRIPT-

Commits of previous years:
* 2020: fa0074e2d8
* 2019: aaaaad6ac9
2021-12-30 19:36:57 +02:00
Russell Yanofsky
ff5f6dea53 scripted-diff: Rename interfaces::WalletClient to interfaces::WalletLoader
Name has been confusing since it was introduced, and it was pointed in
recent review club as https://bitcoincore.reviews/10102 that it was
particularly unclear how interfaces::WalletClient was different from
interfaces::Wallet.

-BEGIN VERIFY SCRIPT-
ren() { git grep -l "$1" src | xargs sed -i "s/$1/$2/g"; }
ren WalletClient WalletLoader
ren walletClient walletLoader
ren wallet_client wallet_loader
ren "wallet clients release the wallet" "wallet pointer owners release the wallet"
ren "wallet client" "wallet loader"
ren "Wallet client" "Wallet loader"
-END VERIFY SCRIPT-
2021-12-22 13:44:55 -05:00
MarcoFalke
a30642926a
Merge bitcoin/bitcoin#23721: wallet, refactor: Move restorewallet() logic to the wallet section
62fa61fa4a refactor: remove the wallet folder if the restore fails (w0xlt)
abbb7eccef refactor: Move restorewallet() RPC logic to the wallet section (w0xlt)
4807f73f48 refactor: Implement restorewallet() logic in the wallet section (w0xlt)

Pull request description:

  Currently `restorewallet()` logic is written in the RPC layer and it can´t be reused by GUI. So it moves this to the wallet section and then, GUI can access it.

  This is necessary to implement the "Restore Wallet" menu item in the GUI (which is already implemented  in https://github.com/bitcoin-core/gui/pull/471 ).

  This commit also simplifies error handling and adds a new behavior: if the restore fails, the invalid wallet folder is removed.

ACKs for top commit:
  achow101:
    ACK 62fa61fa4a
  shaavan:
    crACK 62fa61fa4a

Tree-SHA512: 7ccfbad5943f38616ba0c2dd443c97a4b5bc1f6612dbf5a9e7a0263100aba36671fae929a2e7688442667be394645f44484af137a4802f204a33c4689eb27c39
2021-12-16 08:42:44 +01:00
w0xlt
4807f73f48 refactor: Implement restorewallet() logic in the wallet section
Currently restorewallet() logic is written in the RPC layer
and it can´t be reused by GUI. So it reimplements this in the
wallet and interface sections and then, GUI can access it.
2021-12-14 19:18:56 -03:00
Andrew Chow
d3992669df psbt: Actually use SIGHASH_DEFAULT
Make the behavior align with the help text by actually using
SIGHASH_DEFAULT as the default sighash for signing PSBTs.
2021-12-08 09:43:30 -05:00
W. J. van der Laan
bce58bbb3d
Merge bitcoin/bitcoin#22929: wallet: Automatically add receiving destinations to the address book
3d71d16d1e test: listtranscations with externally generated addresses (S3RK)
d04566415e Add to spends only transcations from me (S3RK)
9f3a622b1c Automatically add labels to detected receiving addresses (S3RK)
c1b99c088c Return used destinations from ScriptPubKeyMan::MarkUnusedAddresses (S3RK)
03840c2064 Add CWallet::IsInternalScriptPubKeyMan (S3RK)
456e350926 wallet: resolve ambiguity of two ScriptPubKey managers providing same script (S3RK)

Pull request description:

  This PR fixes certain use-cases when **send-to-self** transactions are missing from `listtransactions` output.

  1. When a receiving address is generated externally to the wallet
  (e.g. same wallet running on two nodes, or by 3rd party from xpub)
  2. When restoring backup with lost metadata, but keypool gap is not exceeded yet

  When the block is connected or tx added to mempool we already mark used keys. This PR extends this logic to determine whether the destination is a receiving one and if yes add it to the address book with empty label.

  Works both for legacy and descriptors wallets.
  - For legacy it uses the internal flag from the keypool entry. Caveat: because we don't know which script type would be used we add all possible destinations for such keys.
  - For descriptor wallets it uses internal flag for the script pub key manager. Caveat: it only works for active descriptors.

  fixes #19856
  fixes #20293

ACKs for top commit:
  laanwj:
    Code review ACK 3d71d16d1e

Tree-SHA512: 03fafd5548ead0c4ffe9ebcc9eb2849f1d2fa7270fda4166419b86877d4e57dcf04460e465fbb9c90b42031f3c05d1b83f1b67a9f82c2a42980825ed1e7b52e6
2021-12-02 19:37:33 +01:00
W. J. van der Laan
383d350bd5
Merge bitcoin/bitcoin#22513: rpc: Allow walletprocesspsbt to sign without finalizing
a99ed89865 psbt: sign without finalizing (Andrew Chow)

Pull request description:

  It can be useful to sign an input with `walletprocesspsbt` but not finalize that input if it is complete. This PR adds another option to `walletprocesspsbt` to be able to do that. We will still finalize by default.

  This does not materially change the PSBT workflow since `finalizepsbt` needs to be called in order to extract the tx for broadcast.

ACKs for top commit:
  meshcollider:
    utACK a99ed89865
  Sjors:
    utACK a99ed89

Tree-SHA512: c88e5d3222109c5f4e763b1b9d97ce4655f68f2985a4509caab2d4e7f5bac5047328fd69696e82a330f5c5a333e0312568ae293515689b77a4747ca2f17caca6
2021-11-29 17:20:20 +01:00
W. J. van der Laan
cf24152596
Merge bitcoin/bitcoin#21206: refactor: Make CWalletTx sync state type-safe
d8ee8f3cd3 refactor: Make CWalletTx sync state type-safe (Russell Yanofsky)

Pull request description:

  Current `CWalletTx` state representation makes it possible to set inconsistent states that won't be handled correctly by wallet sync code or serialized & deserialized back into the same form.

  For example, it is possible to call `setConflicted` without setting a conflicting block hash, or `setConfirmed` with no transaction index. And it's possible update individual `m_confirm` and `fInMempool` data fields without setting an overall consistent state that can be serialized and handled correctly.

  Fix this without changing behavior by using `std::variant`, instead of an enum and collection of fields, to represent sync state, so state tracking code is safer and more legible.

  This is a first step to fixing state tracking bugs https://github.com/bitcoin-core/bitcoin-devwiki/wiki/Wallet-Transaction-Conflict-Tracking, by adding an extra margin of safety that can prevent new bugs from being introduced as existing bugs are fixed.

ACKs for top commit:
  laanwj:
    re-ACK d8ee8f3cd3
  jonatack:
    Code review ACK d8ee8f3cd3

Tree-SHA512: b9f15e9d99dbdbdd3ef7a76764e11f66949f50e6227e284126f209e4cb106af6d55e9a9e8c7d4aa216ddc92c6d5acc6f4aa4746f209bbd77f03831b51a2841c3
2021-11-25 19:41:53 +01:00
Samuel Dobson
a42923ce21
Merge bitcoin/bitcoin#23348: rpc, wallet: Do not return "keypoololdest" for blank descriptor wallets
ee03c782ba wallet: Make GetOldestKeyPoolTime return nullopt for blank wallets (Hennadii Stepanov)
3e4f069d23 wallet, refactor: Make GetOldestKeyPoolTime return type std::optional (Hennadii Stepanov)

Pull request description:

  The "keypoololdest" field in the `getwalletinfo` RPC response should be used for legacy wallets only.

  Th current implementation (04437ee721) assumes that `CWallet::GetOldestKeyPoolTime()` always return `0` for descriptor wallets. This assumption is wrong for _blank_ descriptor wallets, when `m_spk_managers` is empty. As a result:
  ```
  $ src/bitcoin-cli -signet -rpcwallet=211024-d-DPK getwalletinfo
  {
    "walletname": "211024-d-DPK",
    "walletversion": 169900,
    "format": "sqlite",
    "balance": 0.00000000,
    "unconfirmed_balance": 0.00000000,
    "immature_balance": 0.00000000,
    "txcount": 0,
    "keypoololdest": 9223372036854775807,
    "keypoolsize": 0,
    "keypoolsize_hd_internal": 0,
    "paytxfee": 0.00000000,
    "private_keys_enabled": false,
    "avoid_reuse": false,
    "scanning": false,
    "descriptors": true
  }
  ```

  This PR fixes this issue with direct checking of the `WALLET_FLAG_DESCRIPTORS` flag.

ACKs for top commit:
  lsilva01:
    re-ACK ee03c78
  stratospher:
    ACK ee03c78.
  meshcollider:
    Code review ACK ee03c782ba

Tree-SHA512: 9852f9f8ed5c08c07507274d7714f039bbfda66da6df65cf98f67bf11a600167d0f7f872680c95775399477f4df9ba9fce80ec0cbe0adb7f2bb33c3bd65b15df
2021-11-22 17:08:26 +13:00
Russell Yanofsky
d8ee8f3cd3 refactor: Make CWalletTx sync state type-safe
Current CWalletTx state representation makes it possible to set
inconsistent states that won't be handled correctly by wallet sync code
or serialized & deserialized back into the same form.

For example, it is possible to call setConflicted without setting a
conflicting block hash, or setConfirmed with no transaction index. And
it's possible update individual m_confirm and fInMempool data fields
without setting an overall consistent state that can be serialized and
handled correctly.

Fix this without changing behavior by using std::variant, instead of an
enum and collection of fields, to represent sync state, so state
tracking code is safer and more legible.

This is a first step to fixing state tracking bugs
https://github.com/bitcoin-core/bitcoin-devwiki/wiki/Wallet-Transaction-Conflict-Tracking,
by adding an extra margin of safety that can prevent new bugs from being
introduced as existing bugs are fixed.
2021-11-15 09:11:44 -05:00
Kiminuo
2ec38bdebb Remove gArgs from wallet.h and wallet.cpp
Co-authored-by: Russell Yanofsky <russ@yanofsky.org>
2021-11-09 11:27:06 +01:00
Hennadii Stepanov
3e4f069d23
wallet, refactor: Make GetOldestKeyPoolTime return type std::optional
This change gets rid of the magic number 0 in the
DescriptorScriptPubKeyMan::GetOldestKeyPoolTime() function.

No behavior change.
2021-11-03 10:35:47 +02:00
MarcoFalke
fa8fef6ef2
doc: Fix CWalletTx::Confirmation doc
Follow-up to:
* commit 700c42b85d, which replaced pIndex
  with block_hash in AddToWalletIfInvolvingMe.

* commit 9700fcb47f, which replaced
  posInBlock with confirm.nIndex.
2021-10-21 22:13:35 +02:00
S3RK
03840c2064 Add CWallet::IsInternalScriptPubKeyMan 2021-10-06 08:23:53 +02:00
S3RK
456e350926 wallet: resolve ambiguity of two ScriptPubKey managers providing same script 2021-10-05 09:50:38 +02:00
MarcoFalke
816e15ee81
Merge bitcoin/bitcoin#22951: consensus: move amount.h into consensus
9d0379cea6 consensus: use <cstdint> over <stdint.h> in amount.h (fanquake)
863e52fe63 consensus: make COIN & MAX_MONEY constexpr (fanquake)
d09071da5b [MOVEONLY] consensus: move amount.h into consensus (fanquake)

Pull request description:

  A first step (of a few) towards some source code reorganization, as well as making libbitcoinconsensus slightly more self contained.

  Related to #15732.

ACKs for top commit:
  MarcoFalke:
    concept ACK 9d0379cea6 🏝

Tree-SHA512: 97fc79262dcb8c00996852a288fee69ddf8398ae2c95700bba5b326f1f38ffcfaf8fa66e29d0cb446d9b3f4e608a96525fae0c2ad9cd531ad98ad2a4a687cd6a
2021-10-05 09:43:23 +02:00
Samuel Dobson
573b4621cc
Merge bitcoin/bitcoin#17211: Allow fundrawtransaction and walletcreatefundedpsbt to take external inputs
928af61cdb allow send rpc take external inputs and solving data (Andrew Chow)
e39b5a5e7a Tests for funding with external inputs (Andrew Chow)
38f5642ccc allow fundtx rpcs to work with external inputs (Andrew Chow)
d5cfb864ae Allow Coin Selection be able to take external inputs (Andrew Chow)
a00eb388e8 Allow CInputCoin to also be constructed with COutPoint and CTxOut (Andrew Chow)

Pull request description:

  Currently `fundrawtransaction` and `walletcreatefundedpsbt` both do not allow external inputs as the wallet does not have the information necessary to estimate their fees.

  This PR adds an additional argument to both those RPCs which allows the user to specify solving data. This way, the wallet can use that solving data to estimate the size of those inputs. The solving data can be public keys, scripts, or descriptors.

ACKs for top commit:
  prayank23:
    reACK 928af61cdb
  meshcollider:
    Re-utACK 928af61cdb
  instagibbs:
    crACK 928af61cdb
  yanmaani:
    utACK 928af61.

Tree-SHA512: bc7a6ef8961a7f4971ea5985d75e2d6dc50c2a90b44c664a1c4b0f1be5c1c97823516358fdaab35771a4701dbefc0862127b1d0d4bfd02b4f20d2befa4434700
2021-10-04 22:08:46 +13:00
fanquake
d09071da5b
[MOVEONLY] consensus: move amount.h into consensus
Move amount.h to consensus/amount.h.
Renames, adds missing and removes uneeded includes.
2021-09-30 07:41:57 +08:00
Samuel Dobson
f963b0fa8c Corrupt wallet tx shouldn't trigger rescan of all wallets 2021-09-30 12:06:27 +13:00
Andrew Chow
d5cfb864ae Allow Coin Selection be able to take external inputs 2021-09-29 16:48:43 -04:00
Andrew Chow
a99ed89865 psbt: sign without finalizing
We don't always want to finalize after signing, so make it possible to
do that.
2021-09-28 19:13:42 -04:00
BitcoinTsunami
240ea294d5 doc: update doxygen documention of ComputeTimeSmart() and AddToWalletIfInvolvingMe() regarding rescanning_old_block parameter 2021-09-28 21:49:35 +02:00
BitcoinTsunami
07b44f16e7 wallet: fix ComputeTimeSmart algorithm to use blocktime during old block rescanning 2021-09-28 20:56:52 +02:00
Samuel Dobson
c52789365e Allow locked UTXOs to be store in the wallet database 2021-09-25 23:50:06 +12:00
João Barbosa
5fabde6fad wallet: AddWalletDescriptor requires cs_wallet lock
No change in behavior, the lock is already held at call sites.
2021-09-03 18:30:01 +01:00
João Barbosa
32d036e8da wallet: GetLabelAddresses requires cs_wallet lock
No change in behavior, the lock is already held at call sites.
2021-09-03 18:28:12 +01:00
Russell Yanofsky
b11a195ef4 refactor: Detach wallet transaction methods (followup for move-only)
Followup to commit "MOVEONLY: CWallet transaction code out of
wallet.cpp/.h" that detaches and renames some CWalletTx methods, making
into them into standalone functions or CWallet methods instead.

There are no changes in behavior and no code changes that aren't purely
mechanical. It just gives spend and receive functions more consistent
names and removes the circular dependencies added by the earlier
MOVEONLY commit.

There are also no comment or documentation changes. Removed comments
from transaction.h are just migrated to spend.h, receive.h, and
wallet.h.
2021-09-01 02:22:58 -05:00
Andrew Chow
54de7b4746 Allow the long term feerate to be configured, default of 10 sat/vb
The long term feerate is really the highest feerate that the user is
comfortable with making consolidatory transactions. This is should thus
be something that can be configured by the user via a new startup option
-consolidatefeerate. The default value is 10 sat/vbyte, chosen
arbitrarily (it seems like a reasonable number).
2021-08-27 12:46:04 -04:00
Russell Yanofsky
62a09a3077 refactor: remove ::vpwallets and related global variables
Move global wallet variables to WalletContext struct
2021-08-17 04:05:15 -04:00
Andrew Chow
92993aa5cf Change SignTransaction's input_errors to use bilingual_str 2021-07-01 12:57:53 -04:00
Andrew Chow
171366e89b Use bilingual_str for address fetching functions
For GetNewDestination, GetNewChangeDestination, and
GetReservedDestination, use bilingual_str for
errors
2021-07-01 12:57:51 -04:00
fanquake
045bb06ebd
Merge bitcoin/bitcoin#19651: wallet: importdescriptors update existing
3efaf83c75 wallet: deactivate descriptor (S3RK)
6737d9655b test: wallet importdescriptors update existing (S3RK)
586f1d53d6 wallet: maintain SPK consistency on internal flag change (S3RK)
f1b7db1474 wallet: don't mute exceptions in importdescriptors (S3RK)
bf68ebc1cd wallet: allow to import same descriptor twice (S3RK)

Pull request description:

  Rationale: allow updating existing descriptors with `importdescriptors` command.

  Currently if you run same `importdescriptors` command twice with a descriptor containing private key you will get very confusing error — `Missing required fields`. What happens is that Wallet tries to write imported private key to the disk, but it exists already so we get `DB_KEYEXIST (-30995)` from BerkelyDB. Please note, that we set `DB_NOOVERWRITE` (I guess not to lose some keys accidentally). The exception is caught in `catch (...)` in rpcdump.cpp with a generic error.

  With this PR if a descriptor is already present than we will update its activeness, internalness, label, range and next_index.
  For the range only expansion is allowed (range start can only decrease, range end increase).

ACKs for top commit:
  achow101:
    re-ACK 3efaf83c75
  meshcollider:
    Code review ACK 3efaf83c75
  jonatack:
    Light ACK 3efaf83c75 per `git range-diff a000cb0 5d96704 3efaf83` and as a sanity check, re-debug-built on debian with gcc 10.2.1 and clang 11, ran wallet_importdescriptors.py

Tree-SHA512: 122c4b621d64ec8a3b625f3aed9f01a2b5cbaf2029ad0325b5ff38d67fff5cd35324335fabe2dd5169548b01b267c81be6ae0f5c834342f3d5f6eeed515c4843
2021-07-01 10:06:56 +08:00
Samuel Dobson
722776c0fd
Merge bitcoin/bitcoin#21329: descriptor wallet: Cache last hardened xpub and use in normalized descriptors
e6cf0ed92d wallet, rpc: listdescriptors does not need unlocked (Andrew Chow)
3280704886 Pass in DescriptorCache to ToNormalizedString (Andrew Chow)
7a26ff10c2 Change DescriptorImpl::ToStringHelper to use an enum (Andrew Chow)
75530c93a8 Remove priv option for ToNormalizedString (Andrew Chow)
74fede3b8b wallet: Upgrade existing descriptor caches (Andrew Chow)
432ba9e543 wallet: Store last hardened xpub cache (Andrew Chow)
d87b544b83 descriptors: Cache last hardened xpub (Andrew Chow)
cacc391098 Move DescriptorCache writing to WalletBatch (Andrew Chow)
0b4c8ef75c Refactor Cache merging and writing (Andrew Chow)
976b53b085 Revert "Cache parent xpub inside of BIP32PubkeyProvider" (Andrew Chow)

Pull request description:

  Currently fetching a normalized descriptor requires the wallet to be unlocked as it needs the private keys to derive the last hardened xpub. This is not very user friendly as normalized descriptors shouldn't require and don't involve the private keys except for derivation. We solve this problem by caching the last hardened xpub (which has to be derived at some point when generating the address pool).

  However the last hardened xpub was not already being cached. We only cached the immediate parent xpub and derived child keys. For example, with a descriptor derivation path of `/84'/0'/0'/0/*`, the parent xpub that is cached is `m/84'/0'/0'/0`, and the child keys of `m/84'/0'/0'/0/i` (note that child keys would not be cached in this case). This parent xpub is not suitable for the normalized descriptor form as we want the key at `m/84'/0'/0'`. So this PR adds another field to `DescriptorCache` to cache the last hardened xpub so that we can use them for normalized descriptors.

  Since `DescriptorCache` is changing, existing descriptor wallets need to be upgraded to use this new cache. The upgrade will occur in the background either at loading time (if the wallet is not encrypted) or at unlocking time in the same manner that `UpgradeKeyMetadata` operates. It will use a new wallet flag `WALLET_FLAG_LAST_HARDENED_XPUB_CACHED` to indicate whether the descriptor wallet has the last hardened xpub cache.

  Lastly `listdescriptors` will not require the wallet to be locked and `getaddressinfo`'s `parent_desc` will always be output (assuming the upgrade has occurred).

ACKs for top commit:
  fjahr:
    tACK e6cf0ed92d
  S3RK:
    reACK e6cf0ed
  jonatack:
    Semi ACK e6cf0ed92d reviewed, debug-built and ran unit tests and some of the descriptor functional tests at each commit. I'm not very familiar with this code and it could be clearer to the uninitiated IMHO, so I'm not confident enough to give a full ACK. Various minor suggestions follow, most of them for readability, feel free to pick and choose.
  meshcollider:
    Code review + functional test run ACK e6cf0ed92d

Tree-SHA512: ac27aade8644525cd65bfcaf27ff32afb974085b1451faf4ff68c6671a690bd6a41d4f39a33cbf461ae0fbe85995c0a4c08dbd36171da1c1d2a1d00053ad298d
2021-07-01 09:58:40 +12:00