PKCS7 creation and reading

[bkstein]

• Part 4/4 of the split Added pkcs7 support (this PR was split, do not merge) #1598.
• Adds PKCS7 functions.
• This PR is basically the same as Added pkcs7 support (this PR was split, do not merge) #1598, but should be reviewed and merged after X509_PURPOSE #1788, Preparing openssl-sys for PKCS7 and X509 extensions #1789 and X509 and X509Req extensions #1790.

[bkstein]

@sfackler @Skepfyr After upgrading to the current master, I observe timeouts in the tests for openssl 3.1.0-beta1. See last action of this PR. I see this also on my Linux machine with another test (ssl::test::default_verify_paths). Is this a known issue with openssl 3.1.0-beta1?

[Skepfyr]

I'm not sure, this issue doesn't seem to be reproducing on the latest master pipelines and I'm not able to reproduce it locally at all. What was the environment of the machine you were seeing it on?

[bkstein]

Hmm, I cloned the repo on a Kubuntu 22.04. I compiled openssl 3.1.0-beta1 and set the following environment:

LD_LIBRARY_PATH=/home/bkstein/.local/openssl/3.1.0-beta1/lib64
OPENSSL_DIR=/home/bkstein/.local/openssl/3.1.0-beta1
OPENSSL_LIBS=crypto:ssl
OPENSSL_STATIC=0

Then (--show-output to verify correct openssl version is used)

$ cargo build --all
$ cargo test -- --show-output

I see

     Running unittests src/lib.rs (target/debug/deps/openssl-7cf3b6cc4c3411cb)

running 341 tests
...
test pkcs7::tests::signed_pkcs7 ... ok
...
test ssl::test::default_verify_paths has been running for over 60 seconds
test ssl::test::default_verify_paths ... ok
...
---- version::test_versions stdout ----
Number: '806354944'
Version: 'OpenSSL 3.1.0-beta1 21 Dec 2022'
C flags: 'compiler: gcc -fPIC -pthread -m64 -Wa,--noexecstack -Wall -O3 -DOPENSSL_USE_NODELETE -DL_ENDIAN -DOPENSSL_PIC -DOPENSSL_BUILDING_OPENSSL -DNDEBUG'
Built on: 'built on: Tue Feb 28 14:30:08 2023 UTC'
Platform: 'platform: linux-x86_64'
Dir: 'OPENSSLDIR: "/home/bkstein/.local/openssl/3.1.0-beta1/ssl"'
...

test result: ok. 336 passed; 0 failed; 5 ignored; 0 measured; 0 filtered out; finished in 133.97s

This is reproducible on my machine. BTW, I see this problem with the system openssl 3.0.2, too.

[m-bachelier]

Hi ! I'm interested by this PR, I'd like to know when this request will be merged or at least when it will be rebased on the latest version so I can patch my project locally. :)

[bkstein]

Hi ! I'm interested by this PR, I'd like to know when this request will be merged or at least when it will be rebased on the latest version so I can patch my project locally. :)

Hi @m-bachelier, I stopped keeping this PR up-to-date a while ago, as the review process stalled. Not sure what we can do to revive the process. I'd be happy to rebase, but not without some perspective.