Replaces the existing tests in the test/lint/lint-filenames.sh and test/lint/lint-shebang.sh linter tests, as well as adding some new and increased testing.
Summary of tests:
- Checks every file in the repository against an allowed regexp to make sure only lowercase or uppercase alphanumerics (a-zA-Z0-9), underscores (_), hyphens (-), at (@) and dots (.) are used in repository filenames.
- Checks only source files (*.cpp, *.h, *.py, *.sh) against a stricter allowed regexp to make sure only lowercase alphanumerics (a-z0-9), underscores (_), hyphens (-) and dots (.) are used in source code filenames. Additionally there is an exception regexp for directories or files which are excepted from matching this regexp (This should replicate the existing test/lint/lint-filenames.sh test)
- Checks all files in the repository match an allowed executable or non-executable file permission octal. Additionally checks that for executable files, the file contains a shebang line.
- Checks that for executable .py and .sh files, the shebang line used matches an allowable list of shebangs (This should replicate the existing test/lint/lint-shebang.sh test)
- Checks every file that contains a shebang line to ensure it has an executable permission
Fixes#21729
415fb2e1abac189fcbe8eccf2ea065724d17460f GUI/Intro: Move prune setting below explanation (Luke Dashjr)
2a84c6bcf61429ac507b506a39247b3a66edbcb4 GUI/Intro: Estimate max age of backups that can be restored with pruning (Luke Dashjr)
e2dcd957fa206a28404ff824fb764b8889705fb2 GUI/Intro: Rework UI flow to let the user set prune size in GBs (Luke Dashjr)
f2e5a6b54fa38b10d822609939b8108bd8fe041b GUI/Intro: Abstract GUI-to-option into Intro::getPrune (Luke Dashjr)
62932cc686dc46ce14c026993deea8e561654177 GUI/Intro: Return actual prune setting from showIfNeeded (Luke Dashjr)
Pull request description:
Moved from https://github.com/bitcoin/bitcoin/pull/18728
ACKs for top commit:
ryanofsky:
Code review ACK 415fb2e1abac189fcbe8eccf2ea065724d17460f. Changes since last review: mb/gib suffixes, constexpr QOverload expected_backup_days tweaks, new moveonly layout commit
jarolrod:
Tested ACK 415fb2e.
Talkless:
tACK 415fb2e1abac189fcbe8eccf2ea065724d17460f, tested on Debian Sid with Qt 5.15.2.
hebasto:
ACK 415fb2e1abac189fcbe8eccf2ea065724d17460f, my unresolved comments are not blockers, and they could be resolved in follow ups.
Tree-SHA512: bd4882a9c08e6a6eb14b7fb6366983db8581425b4949fea212785d34d8fad9e32fb81ca8c8cdbfb2c05ea394aaf5a746ba2cf16623795c7252c3bdb61d455f00
9bd3f35003c2e9eff74766d57a71d6b391ab602a build: adds switch for disabling random base addresses in MSVC (Ethan Heilman)
Pull request description:
In m4 builds we have the --disable-hardening switch that can be given in `./configure` to turn off randomized addresses. This PR provides a simple way of turning off randomized addresses in MSVC builds.
This PR:
* Adds this option the common-init project file so that it can be globally set across the project
* Documents this switch in msvc build readme
I have run the following test to verify this works
I ran the msvc build with `<RandomizedBaseAddress>true</RandomizedBaseAddress>` then checked `bitcoind.exe` and `bitcoin-cli.exe` with `dumpbin.exe`:
bitcoind
```
> .\dumpbin.exe /headers src/bitcoind.exe
Microsoft (R) COFF/PE Dumper Version 14.16.27045.0
...
OPTIONAL HEADER VALUES
20B magic # (PE32+)
14.28 linker version
AE4600 size of code
345C00 size of initialized data
0 size of uninitialized data
6BED74 entry point (00000001406BED74) mainCRTStartup
1000 base of code
140000000 image base (0000000140000000 to 0000000140E2DFFF)
1000 section alignment
200 file alignment
6.00 operating system version
0.00 image version
6.00 subsystem version
0 Win32 version
E2E000 size of image
400 size of headers
0 checksum
3 subsystem (Windows CUI)
8160 DLL characteristics
High Entropy Virtual Addresses
Dynamic base
NX compatible
Terminal Server Aware
```
bitcoin-cli
```
> .\dumpbin.exe /headers src/bitcoin-cli.exe
Microsoft (R) COFF/PE Dumper Version 14.16.27045.0
...
OPTIONAL HEADER VALUES
20B magic # (PE32+)
14.28 linker version
1E3E00 size of code
92C00 size of initialized data
0 size of uninitialized data
104384 entry point (0000000140104384) mainCRTStartup
1000 base of code
140000000 image base (0000000140000000 to 0000000140279FFF)
1000 section alignment
200 file alignment
6.00 operating system version
0.00 image version
6.00 subsystem version
0 Win32 version
27A000 size of image
400 size of headers
0 checksum
3 subsystem (Windows CUI)
8160 DLL characteristics
High Entropy Virtual Addresses
Dynamic base
NX compatible
Terminal Server Aware
```
Then I built with `<RandomizedBaseAddress>false</RandomizedBaseAddress>` then checked `bitcoind.exe` and `bitcoin-cli.exe` with `dumpbin.exe` and observed that `Dynamic base` was longer listed in `OPTIONAL HEADER VALUES`
bitcoind
```
PS C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.16.27023\bin\HostX64\x64> .\dumpbin.exe /headers C:\Users\e0\Documents\GitHub\bitcoin021noaslr/src/bitcoind.exe
Microsoft (R) COFF/PE Dumper Version 14.16.27045.0
...
OPTIONAL HEADER VALUES
20B magic # (PE32+)
14.28 linker version
AE4600 size of code
33FE00 size of initialized data
0 size of uninitialized data
6BED74 entry point (00000001406BED74) mainCRTStartup
1000 base of code
140000000 image base (0000000140000000 to 0000000140E27FFF)
1000 section alignment
200 file alignment
6.00 operating system version
0.00 image version
6.00 subsystem version
0 Win32 version
E28000 size of image
400 size of headers
0 checksum
3 subsystem (Windows CUI)
8120 DLL characteristics
High Entropy Virtual Addresses
NX compatible
Terminal Server Aware
```
bitcoin-cli
```
> .\dumpbin.exe /headers src/bitcoin-cli.exe
Microsoft (R) COFF/PE Dumper Version 14.16.27045.0
...
OPTIONAL HEADER VALUES
20B magic # (PE32+)
14.28 linker version
1E3E00 size of code
90C00 size of initialized data
0 size of uninitialized data
104384 entry point (0000000140104384) mainCRTStartup
1000 base of code
140000000 image base (0000000140000000 to 0000000140277FFF)
1000 section alignment
200 file alignment
6.00 operating system version
0.00 image version
6.00 subsystem version
0 Win32 version
278000 size of image
400 size of headers
0 checksum
3 subsystem (Windows CUI)
8120 DLL characteristics
High Entropy Virtual Addresses
NX compatible
Terminal Server Aware
```
ACKs for top commit:
sipsorcery:
ACK 9bd3f35003c2e9eff74766d57a71d6b391ab602a.
practicalswift:
cr ACK 9bd3f35003c2e9eff74766d57a71d6b391ab602a: patch looks correct
Tree-SHA512: ddffdb4ff8a09c7cfef61c07a5db2a2828e9e3aa795ad8e5a1bf51ab489a68b40f87f6694518c5e0b8858c0fad4f93bb947b052e6b9d5e55eb38e764b746fc02
6ba892126d354219b146f0c7f35d472f9c14bdac refactor + document coin selection strategy (glozow)
58ea324fdd906204bb77ea4be1c01a3ab56cf86f [docs] add doxygen comments to wallet code (glozow)
0c74716c50384677724247e05e6592f845fc8635 [docs] format existing comments as doxygen (glozow)
Pull request description:
I think it would help code review to have more documentation + doxygen comments
ACKs for top commit:
Xekyo:
ReACK 6ba892126d
achow101:
ACK 6ba892126d354219b146f0c7f35d472f9c14bdac
Tree-SHA512: 74a78d9b0e0c1d5659bed566432a5b3511511d8b2432f440565f443da7b8257a1b90e70aa7505a7f8abf618748eeb43d166e84f278bdee3d34ce5d5c37dc573a
5e7d1997fce15b3e2fb77e67491237812e1f98d9 doc: note on SDK for macOS depends cross-compile (Jarol Rodriguez)
Pull request description:
This PR adds a friendly note for those who are unfamiliar with our depends build system that an extracted SDK is needed before proceeding with a macOS cross-compile. Additionally, it refers a builder to look at [macdeploy](https://github.com/bitcoin/bitcoin/tree/master/contrib/macdeploy#sdk-extraction) for instructions on obtaining the SDK and provides context to where this SDK should reside.
**Master:** [render](https://github.com/bitcoin/bitcoin/blob/master/depends/README.md#for-macos-cross-compilation)
**PR:** [render](241c4017ed/depends/README.md (for-macos-cross-compilation))
ACKs for top commit:
jonatack:
ACK 5e7d1997fce15b3e2fb77e67491237812e1f98d9
Sjors:
ACK 5e7d199
hebasto:
re-ACK 5e7d1997fce15b3e2fb77e67491237812e1f98d9
Tree-SHA512: bbdff4f6ea1dfae03bca7fd30dfba543c4d130960075195e42695875382f13b93ea02128f80686fa4d1b5c3bd3703ac600f8ba07356ea0caf0fec09b7dbd081e
a33bdb52d192d3e1f4697c98d0e80b2fa2bbe53a [tests] Speed up p2p_segwit.py (John Newbery)
Pull request description:
Never sleep for more than 5 seconds when waiting for an
inv-getdata exchange to time out.
Shaves about 1 minute of the runtime of p2p_segwit.py.
ACKs for top commit:
MarcoFalke:
review ACK a33bdb52d192d3e1f4697c98d0e80b2fa2bbe53a 🐳
Tree-SHA512: 7bd892ed0b1b817579f88910ba4714519bd0d871241e1b9a67968d297de1ed63d558115abad2aae4d105ff176c35a7079a3a789f3053442aed30d6e1aefb5c4a
This reverts commit eac6a3080d38cfd4eb7204ecd327df213958e51a ("refactor:
Rework asmap Interpret to avoid ptrdiff_t"), because it is UB to form a
past-the-end iterator, even if it is never dereferenced.
Then fix the compiler warning in a different way:
Instead of comparing an uint32_t against a signed ptrdiff_t, just
promote both to a type that can represent both types.
Even though in this case the ptrdiff_t should never hold a negative
value, the overhead from promotion should be negligible.
fa40eb5b6bfd151912c58d61771f6a6528f44e67 test: Speed up mempool_spend_coinbase.py (MarcoFalke)
fa29382ab23d52b86bfda8a267195b6c51b713c2 test: Fix test cache issue (MarcoFalke)
fa085b470a9647f3b261f506b46f4e7ca2baf0b0 test: Create MiniWallet.create_self_transfer (MarcoFalke)
fa1bedb4944b513a3c9184ad549f58bfbe69e20e test: Add MiniWallet.sendrawtransaction (MarcoFalke)
Pull request description:
Locally the test will run 4 seconds faster with `--valgrind` (18s vs 14s)
ACKs for top commit:
mjdietzx:
crACK fa40eb5b6b
Tree-SHA512: ecfb60dda5ca5d7e6367bb9c6210390d95ebf6396ce657728901d118b75bb90c98f9351df3b01004d00682234448d6c6a13338d12097f7dced2cf7f1bd84d924
83a425d25af033086744c1c8c892015014ed46bd compressor: use a prevector in compressed script serialization (William Casarin)
Pull request description:
This function was doing millions of unnecessary heap allocations during IBD.
I'm start to catalog unnecessary heap allocations as a pet project of mine: as-zero-as-possible-alloc IBD. This is one small step.
before:
after:
~should I type alias this?~ *I type aliased it*
This is a part of the Zero Allocations Project #18849 (ZAP1). This code came up as a place where many allocations occur.
ACKs for top commit:
Empact:
ACK 83a425d25a
elichai:
tACK 83a425d25af033086744c1c8c892015014ed46bd
sipa:
utACK 83a425d25af033086744c1c8c892015014ed46bd
Tree-SHA512: f0ffa6ab0ea1632715b0b76362753f9f6935f05cdcc80d85566774401155a3c57ad45a687942a1806d3503858f0bb698da9243746c8e2edb8fdf13611235b0e0
5a4a15d2b4456272fd8aa080195f40a09576ae01 qt, refactor: Drop no longer used PeerTableModel::getRowByNodeId func (Hennadii Stepanov)
9a9f180df0d51396fee2468681df6dd935b0248e qt, refactor: Drop no longer used PeerTableModel::sort function (Hennadii Stepanov)
778a64af209e4fa692a3aca8376ba1bd5e1af881 qt: Use PeerTableSortProxy for sorting peer table (Hennadii Stepanov)
df2d165ba9e0acc53f36a326f68f57ad9c297872 qt: Add peertablesortproxy module (Hennadii Stepanov)
Pull request description:
The "Peers" table in the "Node" window does not hold multiple selection after sorting.
This PR introduces a `QSortFilterProxyModel` subclass, that is a standard Qt [practice](https://doc.qt.io/qt-5/model-view-programming.html#custom-sorting-models) for such cases.
Now the sorting code is encapsulated into the dedicated Qt class, and we do not need to maintain it.
Fixes#283 (additionally).
---
On **master** (7ae86b3c6845873ca96650fc69beb4ae5285c801):
- rows are sorted by "Ping", and a selection is made
- rows are sorted by "NodeId", and the previous selection is _lost_
With **this PR**:
- rows are sorted by "Ping", and a selection is made
- rows are sorted by "NodeId", and the row are still selected
ACKs for top commit:
jarolrod:
re-ACK 5a4a15d2b4456272fd8aa080195f40a09576ae01, tested on macOS 11.2 Qt 5.15.2 after rebase
promag:
Tested ACK 5a4a15d2b4456272fd8aa080195f40a09576ae01.
Tree-SHA512: f81c1385892fbf1a46ffb98b42094ca1cc97da52114bbbc94fedb553899b1f18c26a349e186bba6e27922a89426bd61e8bc88b1f7832512dbe211b5f834e076e
This increase the maximum number of pubkeys to 20 (valid in P2WSH and
P2SH-P2WSH) and only checks the redeemScript doesn't exceed
MAX_SCRIPT_ELEMENT_SIZE for P2SH, as this checked is removed under
Segwit context.
Signed-off-by: Antoine Poinsot <darosior@protonmail.com>
We were previously ruling out 17-20 pubkeys multisig, while they are
only invalid under P2SH context.
This makes multisigs with up to 20 keys be detected as valid by the
solver. This is however *not* a policy change as it would only apply
to bare multisigs, which are already limited to 3 pubkeys.
Note that this does not change the sigOpCount calculation (as it would
break consensus). Therefore 1-16 keys multisigs are counted as 1-16 sigops
and 17-20 keys multisigs are counted as 20 sigops.
Signed-off-by: Antoine Poinsot <darosior@protonmail.com>
545404e7e1c72985557ccffe865cea269143e5dd fuzz: Add RPC interface fuzzing. Increase fuzzing coverage from 65% to 70%. (practicalswift)
Pull request description:
Add RPC interface fuzzing.
This PR increases overall fuzzing line coverage from [~65%](https://marcofalke.github.io/btc_cov/fuzz.coverage/) to ~70% 🎉
To test this PR:
```
$ make distclean
$ ./autogen.sh
$ CC=clang CXX=clang++ ./configure --enable-fuzz --with-sanitizers=address,fuzzer,undefined
$ make -C src/ test/fuzz/fuzz
$ FUZZ=rpc src/test/fuzz/fuzz
```
See [`doc/fuzzing.md`](https://github.com/bitcoin/bitcoin/blob/master/doc/fuzzing.md) for more information on how to fuzz Bitcoin Core. Don't forget to contribute any coverage increasing inputs you find to the [Bitcoin Core fuzzing corpus repo](https://github.com/bitcoin-core/qa-assets).
Happy fuzzing :)
ACKs for top commit:
MarcoFalke:
Concept ACK 545404e7e1c72985557ccffe865cea269143e5dd
Tree-SHA512: 35fc1b508af42bf480ee3762326b09ff2eecdb7960a1917ad16345fadd5c0c21d666dafe736176e5a848ff6492483c782e4ea914cd9000faf50190df051950fd
363df758a9e0b5e0aa5ab401de2de820fc362c19 doc/style followups in MempoolAcceptResult (glozow)
Pull request description:
Follow up to #21062. Was going to be a part of #20833 but I'm trying to break it down as much as possible.
- Make members const (https://github.com/bitcoin/bitcoin/pull/21062#discussion_r573659273)
- List fee units (https://github.com/bitcoin/bitcoin/pull/21062#discussion_r569329362)
- Use default value for `TxValidationState` in the success case (https://github.com/bitcoin/bitcoin/pull/21062#discussion_r573659801).
ACKs for top commit:
jnewbery:
ACK 363df758a9e0b5e0aa5ab401de2de820fc362c19
practicalswift:
cr ACK 363df758a9e0b5e0aa5ab401de2de820fc362c19: patch looks correct and `const` is better than non-`const` (where possible :))
ariard:
Code Review ACK 363df75
Tree-SHA512: 0ff1a0279e08e03204e48d0f4c92428d7f39c32f52c1d20fe6a0283d605839898297344be82ca69640ba9f878ca4ebd5da2d717e26d719a183b211d709334082
844ad0eccaa1dbfefc30d19804d95d67c3d5f06d doc: IsSnapshotActive (James O'Beirne)
9b604c0207b526c008617cdca210f35db5e344db validation: prepare VerifyDB for assumeutxo (James O'Beirne)
7901647d722bcc5b0554ad73b14481cbe73608e4 refactor: rename active_chainstate in VerifyDB (James O'Beirne)
Pull request description:
This is part of the [assumeutxo project](https://github.com/bitcoin/bitcoin/projects/11) (parent PR: #15606)
---
~~Pretty cut and dry; parameterizes `CVerifyDB` methods so that we can run the verify procedure on multiple chainstates.~~
Two minor tweaks to ensure that `VerifyDB` can be run on multiple chainstates and a corresponding rename.
ACKs for top commit:
fjahr:
Code review re-ACK 844ad0eccaa1dbfefc30d19804d95d67c3d5f06d
MarcoFalke:
review ACK 844ad0eccaa1dbfefc30d19804d95d67c3d5f06d 🐥
Tree-SHA512: 26a398cf4dabc1aa0850743921dba0452b4813848a3c777586dc981716737e98e17b8110254a5c41af95dd236e0c00dc8b4eee891d69bef825a5e1911fc499d0
84934bf70e11fe4cda1cfda60113a54895d4fdd5 multiprocess: Add echoipc RPC method and test (Russell Yanofsky)
7d76cf667eff512043a28d4407cc89f58796c42b multiprocess: Add comments and documentation (Russell Yanofsky)
ddf7ecc8dfc64cf121099fb047e1ac871de94f4c multiprocess: Add bitcoin-node process spawning support (Russell Yanofsky)
10afdf0280fa93bfffb0a7665c60dc155cd84514 multiprocess: Add Ipc interface implementation (Russell Yanofsky)
745c9cebd50fea1664efef571dc1ee1bddc96102 multiprocess: Add Ipc and Init interface definitions (Russell Yanofsky)
5d62d7f6cd48bbc4e9f37ecc369f38d5e1e0036c Update libmultiprocess library (Russell Yanofsky)
Pull request description:
This PR is part of the [process separation project](https://github.com/bitcoin/bitcoin/projects/10).
---
This PR adds basic process spawning and IPC method call support to `bitcoin-node` executables built with `--enable-multiprocess`[*].
These changes are used in https://github.com/bitcoin/bitcoin/pull/10102 to let node, gui, and wallet functionality run in different processes, and extended in https://github.com/bitcoin/bitcoin/pull/19460 and https://github.com/bitcoin/bitcoin/pull/19461 after that to allow gui and wallet processes to be started and stopped independently and connect to the node over a socket.
These changes can also be used to implement new functionality outside the `bitcoin-node` process like external indexes or pluggable transports (https://github.com/bitcoin/bitcoin/pull/18988). The `Ipc::spawnProcess` and `Ipc::serveProcess` methods added here are entry points for spawning a child process and serving a parent process, and being able to make bidirectional, multithreaded method calls between the processes. A simple example of this is implemented in commit "Add echoipc RPC method and test."
Changes in this PR aside from the echo test were originally part of #10102, but have been split and moved here for easier review, and so they can be used for other applications like external plugins.
Additional notes about this PR can be found at https://bitcoincore.reviews/19160
[*] Note: the `--enable-multiprocess` feature is still experimental, and not enabled by default, and not yet supported on windows. More information can be found in [doc/multiprocess.md](https://github.com/bitcoin/bitcoin/blob/master/doc/multiprocess.md)
ACKs for top commit:
fjahr:
re-ACK 84934bf70e11fe4cda1cfda60113a54895d4fdd5
ariard:
ACK 84934bf. Changes since last ACK fixes the silent merge conflict about `EnsureAnyNodeContext()`. Rebuilt and checked again debug command `echoipc`.
Tree-SHA512: 52a948b5e18a26d7d7a09b83003eaae9b1ed2981978c36c959fe9a55abf70ae6a627c4ff913a3428be17400a3dace30c58b5057fa75c319662c3be98f19810c6
However, keep a declaration in validation to make it possible to move
smaller chunks to blockstorage without breaking compilation.
Also, expose AbortNode in the header.
Can be reviewed with --color-moved=dimmed-zebra --color-moved-ws=ignore-all-space
d831e711cab83c70bf2ded62fe33f484844e73dd [validation] RewindBlockIndex no longer needed (Dhruv Mehta)
Pull request description:
Closes#17862
Context from [original comment](https://github.com/bitcoin/bitcoin/issues/17862#issuecomment-744285188) (minor edits):
`RewindBlockIndex()` is a mechanism to allow nodes to be upgraded after segwit activation, while still keeping their chainstate/datadir in a consistent state. It works as follows:
- A pre-segwit (i.e. v0.13.0 or older) node is running.
- Segwit activates. The pre-segwit node remains sync'ed to the tip, but is not enforcing the new segwit rules.
- The user upgrades the node to a segwit-aware version (v0.13.1 or newer).
- On startup, in `AppInitMain()`, `RewindBlockIndex()` is called. This walks the chain backwards from the tip, disconnecting and erasing blocks that from after segwit activation that weren't validated with segwit rules.
- those blocks are then redownloaded (with witness data) and validated with segwit rules.
This logic probably isn't required any more since:
- Segwit activated at height 481824, when the block chain was 130GB and the total number of txs was 250 million. Today, we're at height 667704, the blockchain is over 315GB and the total number of txs is over 600 million. Even if 20% of that added data is witness data (a high estimate), then around 150GB of transactions would need to be rewound to get back to segwit activation height. It'd probably be faster to simply validate from genesis, especially since we won't be validating any scripts before the assumevalid block. It's also unclear whether rewinding 150GB of transactions would even work. It's certainly never been tested.
- Bitcoin Core v0.13 is hardly used any more. https://luke.dashjr.org/programs/bitcoin/files/charts/software.html shows less than 50 nodes running it. The software was EOL on Aug 1st 2018. It's very unlikely that anyone is running 0.13 and will want to upgrade to 0.22.
This PR introduces `NeedsRedownload()` which merely checks for insufficiently validated segwit blocks and requests that the user restarts the node with `-reindex`. Reindexing the block files upon restart will make the node rebuild chain state and block index from the `blk*.dat` files on disk. The node won't be able to index the blocks with `BLOCK_OPT_WITNESS`, so they will be missing from the chain and be re-downloaded, with witness data.
Removing this code allows the following (done in follow-up #21090):
- removal of tests using `segwitheight=-1` in `p2p_segwit.py`.
- in turn, that allows us to drop support for `-segwitheight=-1`, which is only supported for that test.
- that allows us to always set `NODE_WITNESS` in our local services. The only reason we don't do that is to support `-segwitheight=-1`.
- that in turn allows us to drop all of the `GetLocalServices() & NODE_WITNESS` checks inside `net_processing.cpp`, since our local services would always include `NODE_WITNESS`
ACKs for top commit:
jnewbery:
utACK d831e711cab83c70bf2ded62fe33f484844e73dd
jamesob:
ACK d831e711ca
laanwj:
Cursory code review ACK d831e711cab83c70bf2ded62fe33f484844e73dd. Agree with the direction of the change, thanks for simplifying the logic here.
glozow:
utACK d831e711cab83c70bf2ded62fe33f484844e73dd
Tree-SHA512: 3eddf5121ccd081ad7f15a5c6478ef867083edc8ba0bf1ee759e87bc070ee3d2f0698a3feba8db8dc087987c8452887b6f72cff05b3e178f41cb10a515fb8053
