46b025e00df40724175735eb5606ac73067cb3b8 test: add new python linter to check file names and permissions (windsok)
6f6bb3ebc7cb8e17a5dfc8ef55aa2d3f2dc6bdea test: fix file permissions on various scripts (windsok)
Pull request description:
Adds a new python linter test which tests for correct filenames and file permissions in the repository.
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. This increased coverage is intended to catch issues such as in #21728 and https://github.com/bitcoin/bitcoin/pull/16807/files#r345547050
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
Additionally updates the permissions on various files to comply with the new tests.
Fixes#21729
ACKs for top commit:
practicalswift:
cr re-ACK 46b025e00df40724175735eb5606ac73067cb3b8: patch still looks correct
kiminuo:
code review ACK 46b025e00df40724175735eb5606ac73067cb3b8 if `contrib/gitian-descriptors/assign_DISTNAME` permission change is deemed OK.
laanwj:
Code review ACK 46b025e00df40724175735eb5606ac73067cb3b8
Tree-SHA512: 1c8201a2cee0d9cbce15652b68cec9a6458a8b493fcd5392f98560aca0b1a12e668baab65a47100f116f626dadc3f591deb47f7368468c6a46c6c712c2533455
08f3dbb1b0cd5ca01d87e488a2fa905adf7df057 test: Bump shellcheck version (Hennadii Stepanov)
Pull request description:
The changelog for v0.7.2 is available [here](https://github.com/koalaman/shellcheck/blob/v0.7.2/CHANGELOG.md).
Only [SC2268](https://github.com/koalaman/shellcheck/wiki/SC2268) requires to update our code.
ACKs for top commit:
jarolrod:
ACK 08f3dbb1b0cd5ca01d87e488a2fa905adf7df057
Tree-SHA512: 4585cd1f4d9def2fbaafe5a2a57761288d432781eb8c6c6d37064727d7ca8fc3f35c552e6a2ffdf0820d753d4bde2c8e43e5f3f57d242f5f57591a9b1b03558d
f3ba916e8b5b5ee2a381cef38882671eadb231df lint: ignore gitian keys file for spelling linter (Sebastian Falbesoner)
da289a6c4a0a5e110e301f34f1db57b6d31bcdcc lint: update list of spelling linter false positives (Sebastian Falbesoner)
a0022f1cfbb3d8f1f8f3ff135f854be0cb89643f test: bump codespell linter version to 2.0.0 (Sebastian Falbesoner)
Pull request description:
This small patch updates the ignore list for the spelling linter script (which uses `codespell`), both removing false-positives that are not relevant anymore and adding new ones. As [suggested by jonatack](https://github.com/bitcoin/bitcoin/pull/20762#issuecomment-750889701)~~, whose last name is now also part of the list :)~~. Also changed the linter script to not check the gitian keys file, as [suggested by hebasto](https://github.com/bitcoin/bitcoin/pull/20817#discussion_r550763409). The codespell version used is bumped to most recent version 2.0.0, which is more aware of some terms that were previously needed in the ignorelist for v1.17.1, see https://github.com/bitcoin/bitcoin/pull/20817#issuecomment-753428669.
Running spelling linter on master branch (repeated findings in the same file are removed to keep the output short):
```
$ ./test/lint/lint-spelling.sh
contrib/gitian-keys/keys.txt:16: Atack ==> Attack
doc/developer-notes.md:1284: inout ==> input, in out
doc/psbt.md:122: Asend ==> Ascend, as end
src/bench/verify_script.cpp:27: Keypair ==> Key pair
src/blockencodings.h:30: Unser ==> Under, unset, unsure, user
src/compressor.h:65: Unser ==> Under, unset, unsure, user
src/core_read.cpp:131: presense ==> presence
src/index/disktxpos.h:21: blockIn ==> blocking
src/net_processing.h:67: anounce ==> announce
src/netaddress.h:486: compatiblity ==> compatibility
src/primitives/transaction.h:35: nIn ==> inn, min, bin, nine
src/qt/bitcoinunits.cpp:101: nIn ==> inn, min, bin, nine
src/rpc/blockchain.cpp:2150: nIn ==> inn, min, bin, nine
src/rpc/misc.cpp:198: nIn ==> inn, min, bin, nine
src/script/bitcoinconsensus.cpp:81: nIn ==> inn, min, bin, nine
src/script/bitcoinconsensus.h:63: nIn ==> inn, min, bin, nine
src/script/interpreter.cpp:1279: nIn ==> inn, min, bin, nine
src/script/interpreter.h:222: nIn ==> inn, min, bin, nine
src/script/sign.cpp:17: nIn ==> inn, min, bin, nine
src/script/sign.h:39: nIn ==> inn, min, bin, nine
src/serialize.h:181: Unser ==> Under, unset, unsure, user
src/signet.cpp:142: nIn ==> inn, min, bin, nine
src/test/base32_tests.cpp:17: fo ==> of, for
src/test/base64_tests.cpp:17: fo ==> of, for
src/test/script_tests.cpp:1509: nIn ==> inn, min, bin, nine
src/test/sighash_tests.cpp:27: nIn ==> inn, min, bin, nine
src/test/validation_tests.cpp:78: excercise ==> exercise
src/undo.h:36: Unser ==> Under, unset, unsure, user
src/validation.cpp:1403: nIn ==> inn, min, bin, nine
src/validation.h:255: nIn ==> inn, min, bin, nine
src/wallet/wallet.cpp:1532: nIn ==> inn, min, bin, nine
src/wallet/walletdb.cpp:429: Crypted ==> Encrypted
test/functional/feature_nulldummy.py:63: unnecssary ==> unnecessary
test/functional/wallet_encryption.py:81: crypted ==> encrypted
test/functional/wallet_upgradewallet.py:36: fpr ==> for, far, fps
^ Warning: codespell identified likely spelling errors. Any false positives? Add them to the list of ignored words in test/lint/lint-spelling.ignore-words.txt
```
Running spelling linter on PR branch:
```
$ ./test/lint/lint-spelling.sh
src/core_read.cpp:131: presense ==> presence
src/net_processing.h:67: anounce ==> announce
src/netaddress.h:486: compatiblity ==> compatibility
src/test/validation_tests.cpp:78: excercise ==> exercise
src/wallet/walletdb.cpp:429: Crypted ==> Encrypted
test/functional/feature_nulldummy.py:63: unnecssary ==> unnecessary
test/functional/wallet_encryption.py:81: crypted ==> encrypted
^ Warning: codespell identified likely spelling errors. Any false positives? Add them to the list of ignored words in test/lint/lint-spelling.ignore-words.txt
```
This list of remaining findings doesn't contain false positives anymore -- the typos are fixed in PR https://github.com/bitcoin/bitcoin/pull/20762.
Happy new year! 🍾
ACKs for top commit:
hebasto:
re-ACK f3ba916e8b5b5ee2a381cef38882671eadb231df, only suggested changes since my [previous](https://github.com/bitcoin/bitcoin/pull/20817#pullrequestreview-560632881) review.
jonatack:
ACK f3ba916e8b5b5ee2a381cef38882671eadb231df I don't know if there are any particular issues with bumping codespell to v2.0.0, but locally running the spelling linter and the cirrus job at https://cirrus-ci.com/task/5004066998714368 both LGTM. Thanks for also verifying and removing the unused words from the ignore list.
Tree-SHA512: e92ae6f16c01d4ff3d54f8c3a0ee95e12741f7bfe031d307a785f5cfd8a80525b16b34275f413b914c4a318f5166f9887399c21f2dad9cc7e9be41647042ef37
39d526bde48d98af4fa27906e85db0399b6aa8b1 test: Bump linter versions (Duncan Dean)
Pull request description:
As per #19346, `mypy==0.700` was incompatible with Python 3.8.
I've bumped the versions of all the linters to their latest stable versions.
Checked with both Python 3.7 and 3.8 and everything still seems to work fine.
ACKs for top commit:
hebasto:
ACK 39d526bde48d98af4fa27906e85db0399b6aa8b1, I have reviewed the code and it looks OK, I agree it can be merged.
Tree-SHA512: f3ee7fda8095aa25aa68685e863076d52a6b82649770d24b0064d652763c0ceb8ebcbf9024fc74fca45c754e67b2a831dd070b3af23bc099140e6d27e89a5319
5d77549d8b287eb773db695b88c165ebe3be1005 doc: Add mypy to test dependencies (Hennadii Stepanov)
7dda912e1c28b02723c9f24fa6c4e9003d928978 test: Do not swallow flake8 exit code (Hennadii Stepanov)
Pull request description:
After #18210 the `flake8` exit code in `test/lint/lint-python.sh` just not used that makes the linter broken.
This PR:
- combines exit codes of `flake8` and `mypy` into the `test/lint/lint-python.sh` exit code
- documents `mypy` as the test dependency
ACKs for top commit:
MarcoFalke:
Approach ACK 5d77549d8b287eb773db695b88c165ebe3be1005, fine with me
practicalswift:
ACK 5d77549d8b287eb773db695b88c165ebe3be1005
Tree-SHA512: e948ba04dc4d73393967ebf3c6a26c40d428d33766382a0310fc64746cb7972e027bd62e7ea76898b742a656cf7d0fcda2fdd61560a21bfd7be249cea27f3d41
17648493df478fa9316cc9ed66fe6bc1c2c820a4 doc: Speed up functional test runs using ramdisk (willcl-ark)
Pull request description:
Using a ramdisk for the functional tests can give noticable speedups for developers and reviewers.
Local testing with an 8GB ramdisk saw a full test run using `test/functional/test_runner.py --jobs=100 --cachedir=/mnt/tmp/cache --tmpdir=/mnt/tmp` reduced from ~280 seconds to ~99 seconds.
Possible bikeshedding opportunity to be had over whether this might best fit into `doc/productivity.md`, but IMO more people will likely see it (and it will therefore be more useful) if it is here.
It seems best to select `tmpfs` over `ramfs` as `ramfs` can grow dynamically (good) but cannot be limited in size and might cause the system to hang if you run out of ram (bad), whereas `tmpfs` is size-limited and will overflow into swap.
ACKs for top commit:
josibake:
ACK 17648493df
jamesob:
ACK 17648493df
Tree-SHA512: b8e0846d4558a7a33fbb7cd190e30c36182db36095e1c1feae8c10a12042cff9d97739964bd9211d8564231dc99b4be5eed806d12a1d11dfa908157d7f26cc67
fa80e10d94dbf86da84fc761b09fb631155a5b25 test: Add feature_taproot.py --previous_release (MarcoFalke)
85ccffa26686c6c9adbd18bdde37fc1747281bab test: move releases download incantation to README (Sjors Provoost)
29d6b1da2a862bfbb14e7821979c97416c5400e8 test: previous releases: add v0.20.1 (Sjors Provoost)
Pull request description:
Disabling the new consensus code at runtime is fine, but potentially fragile and incomplete. Fix that by giving the option to run with a version that has been compiled without any taproot code.
ACKs for top commit:
Sjors:
tACK fa80e10
NelsonGaldeman:
tACK fa80e10d94dbf86da84fc761b09fb631155a5b25
Tree-SHA512: 1a1feef823f08c05268759645a8974e1b2d39a024258f5e6acecbe25097aae3fa9302c27262978b40f1aa8e7b525b60c0047199010f2a5d6017dd6434b4066f0
ffff9dcdc3cbe427739cc19cc7a53f032474fa2a test: Explain why test logging should be used (MarcoFalke)
Pull request description:
Background is that some tests don't have any `self.log` call at all. Thus there are no "anchor points" and those tests are hard to debug because the logs can't easily be parsed by a human.
ACKs for top commit:
jonatack:
ACK ffff9dcdc3cbe427739cc19cc7a53f032474fa2a
instagibbs:
ACK ffff9dcdc3
fanquake:
re-ACK ffff9dcdc3cbe427739cc19cc7a53f032474fa2a
Tree-SHA512: 08d962e85c4892c2a0c58feb5dc697c680a9d68e41a79417da6fcd415e0c5c735c4533a985cf225bb89deb5ca717d9bedf990657958079185804caa512b10f5a
## Issue being fixed or feature implemented
Install of dash_hash will change once
https://github.com/dashpay/dash_hash/pull/17/ is merged
## What was done?
- Changed install instructions to match new install in dash_hash README
- Updated Dockerfile to install correctly
## How Has This Been Tested?
N/A
## Breaking Changes
None
## Checklist:
<!--- Go over all the following points, and put an `x` in all the boxes
that apply. -->
- [ ] I have performed a self-review of my own code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have added or updated relevant unit/integration/functional/e2e
tests
- [x] I have made corresponding changes to the documentation
38c3dd9c706e7e84b2a4dbaf1424a3f1c3b694fc docs: Add notes on how to diasble rpc timeout in functional tests while attatching gdb. (codeShark149)
784ae096259955ea7a294114f5c021c9489d2717 test: Add capability to disable RPC timeout in functional tests. (codeShark149)
Pull request description:
Many times, especially while debugging RPC callbacks to core using gdb, the test timeout kicks in before the response can get back. This can be annoying and requires restarting the functional test as well as gdb attachment.
This PR adds a `--notimeout` flag into `test_framework` and sets the `rpc_timeout` accordingly if the flag is set.
The same effect can be achieved with newly added `--factor` flag but keeping a separate flag that explicitly disables the timeout can be easier for new testers to find it out and separates its purpose from the `--factor` flag.
Requesting review ryanofsky jnewbery as per the IRC discussion.
Update: After initial round of review, the approach is modified to accommodate the functionality in already existing `--factor` flag. `--factor` is changed to `--timeout-factor` to express its intent better.
ACKs for top commit:
MarcoFalke:
ACK 38c3dd9c706e7e84b2a4dbaf1424a3f1c3b694fc and thanks for fixing up all my typos 😅
jnewbery:
ACK 38c3dd9c706e7e84b2a4dbaf1424a3f1c3b694fc.
Tree-SHA512: 9458dd1010288c62f8bb83f7a4893284fbbf938882dd65fc9e08810a910db07ef676e3100266028e5d4c8ce407b2267b3860595015da070c84a9d4a9816797db
9576614d2d91ca946d164dfffca441f8bcbd6e2c doc: Describe log files + consistent paths in test READMEs (Martin Erlandsson)
Pull request description:
picks up #15830
I saw this was almost ready to merge but the test logging part was not 100% correct. I reworked that part, the rest is the same.
ACKs for top commit:
GChuf:
ACK 9576614d2d91ca946d164dfffca441f8bcbd6e2c
Tree-SHA512: 3de7f1b0a1b0419df6e7b55964d00e715b6cb7874b1849ad6f120597610d7df4182c4b61b9c9691ce04f4e392ed3caead4c623374be2066ac31319e702d45d09
c427a5800bb53208d30eeb03a73ab8be879e5f45 doc: Set PYTHONUTF8=1 for functional tests on Windows (Hennadii Stepanov)
Pull request description:
The `PYTHONUTF8` environment variable is defined in [PEP 540](https://www.python.org/dev/peps/pep-0540/), and it is actually used in our CI: 5e3380b9f5/.cirrus.yml (L89)
This PR documents such usage to avoid users' [errors](https://github.com/bitcoin/bitcoin/pull/22922#issuecomment-915511037).
ACKs for top commit:
MarcoFalke:
cr ACK c427a5800bb53208d30eeb03a73ab8be879e5f45
Tree-SHA512: 441b8cecfe47d548cfe403b0e1cd0aef25c1a70ff556434ead1f1e26372919931ac6f208a4ed6fd8dcca46e8709245e4fb06f95259a43c8e1221473ce1ee497b
43e7d576f590e90ad7d1ba3d550671a7958f1188 doc: Improve test READMEs (Fabian Jahr)
Pull request description:
General improvements on READMEs for unit tests and functional tests:
- Give unit test readme a headline
- Move general information on `src/test` folder to the top
- Add information on logging and debugging unit tests
- Improve debugging and logging information in functional testing
- Include all available log levels in functional tests
ACKs for top commit:
laanwj:
ACK 43e7d576f590e90ad7d1ba3d550671a7958f1188
Tree-SHA512: 22b27644992ba5d99a885cd51b7a474806714396fcea1fd2d6285e41bdf3b28835ad8c81449099e3ee15a63d57b3ab9acb89c425d9855ed1d9b4af21db35ab03
e91f0a7af2 doc: Remove travis badge from readme (MarcoFalke)
Pull request description:
The readme(s) are shipped in the released source-code archive, in which case the travis badge is useless since it doesn't link to the travis result of the correct commit/tag/branch. GitHub embeds the correct links for each tag or commit that ci ran on, so we don't need this link in the readme.
ACKs for commit e91f0a:
hebasto:
ACK e91f0a7af2aec7d924f00da25c69d8f46e0dd33d
Tree-SHA512: 860435a58b38a9bd0bc62a1e74b3a63c138c9a2f09008a090d5ecc7fd86fa908d2e5eda41d16606507a238d9488fa5323405364a9556b670684a2e4838aead2d
39d526bde48d98af4fa27906e85db0399b6aa8b1 test: Bump linter versions (Duncan Dean)
Pull request description:
As per #19346, `mypy==0.700` was incompatible with Python 3.8.
I've bumped the versions of all the linters to their latest stable versions.
Checked with both Python 3.7 and 3.8 and everything still seems to work fine.
ACKs for top commit:
hebasto:
ACK 39d526bde48d98af4fa27906e85db0399b6aa8b1, I have reviewed the code and it looks OK, I agree it can be merged.
Tree-SHA512: f3ee7fda8095aa25aa68685e863076d52a6b82649770d24b0064d652763c0ceb8ebcbf9024fc74fca45c754e67b2a831dd070b3af23bc099140e6d27e89a5319
13782b8ba8 docs: add perf section to developer docs (James O'Beirne)
58180b5fd4 tests: add utility to easily profile node performance with perf (James O'Beirne)
Pull request description:
Adds a context manager to easily (and selectively) profile node performance during functional test execution using `perf`.
While writing some tests, I encountered some odd bitcoind slowness. I wrote up a utility (`TestNode.profile_with_perf`) that generates performance diagnostics for a node by running `perf` during the execution of a particular region of test code.
`perf` usage is detailed in the excellent (and sadly unmerged) https://github.com/bitcoin/bitcoin/pull/12649; all due props to @eklitzke.
### Example
```python
with node.profile_with_perf("large-msgs"):
for i in range(200):
node.p2p.send_message(some_large_msg)
node.p2p.sync_with_ping()
```
This generates a perf data file in the test node's datadir (`/tmp/testtxmpod0y/node0/node-0-TestName-large-msgs.perf.data`).
Running `perf report` generates nice output about where the node spent most of its time while running that part of the test:
```bash
$ perf report -i /tmp/testtxmpod0y/node0/node-0-TestName-large-msgs.perf.data --stdio \
| c++filt \
| less
# To display the perf.data header info, please use --header/--header-only options.
#
#
# Total Lost Samples: 0
#
# Samples: 135 of event 'cycles:pp'
# Event count (approx.): 1458205679493582
#
# Children Self Command Shared Object Symbol
# ........ ........ ............... ................... ........................................................................................................................................................................................................................................................................
#
70.14% 0.00% bitcoin-net bitcoind [.] CNode::ReceiveMsgBytes(char const*, unsigned int, bool&)
|
---CNode::ReceiveMsgBytes(char const*, unsigned int, bool&)
70.14% 0.00% bitcoin-net bitcoind [.] CNetMessage::readData(char const*, unsigned int)
|
---CNetMessage::readData(char const*, unsigned int)
CNode::ReceiveMsgBytes(char const*, unsigned int, bool&)
35.52% 0.00% bitcoin-net bitcoind [.] std::vector<char, zero_after_free_allocator<char> >::_M_fill_insert(__gnu_cxx::__normal_iterator<char*, std::vector<char, zero_after_free_allocator<char> > >, unsigned long, char const&)
|
---std::vector<char, zero_after_free_allocator<char> >::_M_fill_insert(__gnu_cxx::__normal_iterator<char*, std::vector<char, zero_after_free_allocator<char> > >, unsigned long, char const&)
CNetMessage::readData(char const*, unsigned int)
CNode::ReceiveMsgBytes(char const*, unsigned int, bool&)
...
```
Tree-SHA512: 9ac4ceaa88818d5eca00994e8e3c8ad42ae019550d6583972a0a4f7b0c4f61032e3d0c476b4ae58756bc5eb8f8015a19a7fc26c095bd588f31d49a37ed0c6b3e
e142ee03e7a139168aa1dbf5910c616f60d25042 doc: describe how to pass wildcard names to test runner (Jon Atack)
6a7a70b8cf05a82737c72020fd2b0eebc97cb5e4 test: enable passing wildcards with path to test runner (Jon Atack)
Pull request description:
Currently, passing wildcard testname args to the test runner from outside the test/functional/ directory does not work, even though developers expect it to. See these recent IRC discussions for more background: http://www.erisian.com.au/bitcoin-core-dev/log-2019-07-10.html#l-262 (lines 262 to 323) and http://www.erisian.com.au/bitcoin-core-dev/log-2019-07-11.html#l-134.
1. [BUGFIX] Enable passing wildcards with paths. Examples:
- `test/functional/test_runner.py test/functional/wallet*`
- `functional/test_runner.py functional/wallet*`
- `test/functional/test_runner.py ./test/functional/tool* test/functional/mempool*`
- A current limitation this PR does not change: 9 test files with arguments in their filename are not picked up by wildcard search.
2. [Docs] Describe how to pass wildcard names (multiple and with paths) to the test runner in test/README.md.
ACKs for top commit:
jnewbery:
tested ACK e142ee03e7a139168aa1dbf5910c616f60d25042
jachiang:
Tested ACK e142ee03e7. Thanks a lot for this fix!
MarcoFalke:
ACK e142ee03e7a139168aa1dbf5910c616f60d25042, fine with me
Tree-SHA512: cb3d994880cdc9b8918546b573a25faa5b4c7339826ac7cfe20f076aac6e731a34271609c0cf5a7ee5e4a2d5ae205298319d24bf36ef5b5d569a1a0c57883e54
f96dbd1bbeeea82f07bc71c695fb17e8d7c9f1aa gdb attaching to process during tests has non-sudo solution (Gregory Sanders)
Pull request description:
There are some security considerations, so a link is attached.
Tree-SHA512: 67dd9c4b26b1e6d8e9a9fe766d309c0af69b752f6f544f3dce4bdcc95ae85feb9a49ac600c3f70d100629505d2340ab43932ded53b1485f80b97981e6df6a527
ef5ebc6d8f docs: Clarifying testing instructions (benthecarman)
Pull request description:
This statement confused me on my first time reading through. Hopefully, this addition will help someone else on their first time.
Tree-SHA512: 17f421275adb7586eca954910269d29fcd3bacc42fab4bc2e01110f9e13ca6f8c1ca178246f7192e1131f14ced7f7dc0b57e7aec324898807c1813a2ebc513de
7ec3343 add gdb attach process to test README (Gregory Sanders)
Pull request description:
Saved me many hours. h/t to @jnewbery for the new guide efforts
Tree-SHA512: 4d8ba1717eb842201079488f1cfe369d5d5114df5278643a3f996c986a51e3e039ea994a6f2f06bf6607b697388ad6561198da4693e3cb1ca4a8424e6d423d85
fac79e4 qa: Warn when specified test is not found (MarcoFalke)
Tree-SHA512: d11ecdde275309b12e23155f6cd8e26c99217436b5094a70dd51b95ae7688754227628dd9a801eb6a52ff3ebea4420938e2fc8e9dc9cd77a4dd5c28d2b822354
637706d Tests: Put Extended tests first when they're included (Jimmy Song)
Tree-SHA512: 0a720b2443b3e65f4ad548ecdf822468460fc4f4ecf32385dd79511a01c9ea4c94f0bf765ca593705b19baee1bae254dfcc3952da64b9c51d75b7da7abcdcd28
