Support running CCF on Azure Linux

[maxtropets]

In this issue have to support building and testing CCF on Azure Linux.

The major obstacle so far - openssl.

On Azure Linux, we shall use OpenSSL of (major) version 3. It is to be determined in this ticket which exact version is supported by Azure Linux.

Ticket for reference: #5291

Subtasks to track the progress

• Try fix ./crypto_test (patched, see discussions in comments)
• What backend is used in Azure Linux? SymCrypt? Prove by tracking the lib we link against
• breakdown initial issues

[achamayou]

@maxtropets current is 3.3.2, so that one :)

[maxtropets]

Currently removed the SECP256K1 curve from crypto_test, fails on EVP_PKEY_CTX_set_ec_paramgen_curve_nid with err = 0.

Checked OpenSSL source, same NID for 3.1 and 3.3 impl, NID matches.

#define NID_secp256k1           714

Needs investigation.

[maxtropets]

Tried all other unit tests (crypto test patched with #6591)

 ./tests.sh -VV -L unit
...
The following tests FAILED:
	 11 - crypto_test (Failed)
	 13 - key_exchange_test (SEGFAULT)
	 18 - endorsements_test (Failed)
	 19 - historical_queries_test (SEGFAULT)
	 21 - snapshotter_test (SEGFAULT)
	 27 - channels_test (SEGFAULT)
	 28 - http_test (Failed)
	 37 - csr_test (Failed)

[achamayou]

256k1 is not a NIST standard, which is likely why SymCrypt rejects it - it would be good to confirm and document though

[maxtropets]

What backend is used in Azure Linux? SymCrypt? Prove by tracking the lib we link against

Figured out it's not explicitly linked, but rather being loaded during runtime

openat(AT_FDCWD, "/usr/lib/libsymcrypt.so.103", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0\0\0\0\0\0\0\0"..., 832) = 832
newfstatat(3, "", {st_mode=S_IFREG|0755, st_size=778048, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 557528, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f2af8423000
mmap(0x7f2af842f000, 380928, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xc000) = 0x7f2af842f000
mmap(0x7f2af848c000, 118784, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x69000) = 0x7f2af848c000
mmap(0x7f2af84a9000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x86000) = 0x7f2af84a9000

Confirmed dependency chain ccf -> librypto -> libsymcrypt (monolithic lib):

root [ /workspace/build ]# ldd /usr/lib/libsymcrypt.so.103
	statically linked

[maxtropets]

Tried all other unit tests (crypto test patched with #6591)

 ./tests.sh -VV -L unit
...
The following tests FAILED:
	 11 - crypto_test (Failed)
	 13 - key_exchange_test (SEGFAULT)
	 18 - endorsements_test (Failed)
	 19 - historical_queries_test (SEGFAULT)
	 21 - snapshotter_test (SEGFAULT)
	 27 - channels_test (SEGFAULT)
	 28 - http_test (Failed)
	 37 - csr_test (Failed)

Split into smaller sub-issues except http_test, doesn't look openssl related, looking into it

UPD: Fixed in #6598

[maxtropets]

Got to the bottom of UVM endorsements test failure, filed a ticket (#6600)

So far, all the known issues are filed in sub-issues or solved.

Next steps

• solve all sub-issues
• rebase Enable unit tests for Azure Linux in CI #6591 on fixed main and rerun CI
• file/solve more issues if any
• extend CI with long tests
• wrap up the Enable unit tests for Azure Linux in CI #6591 itself and merge