Optimized the FD fetch logic of openssl

[cfc4n]

This pull request refactors the logic for extracting BIO and file descriptor information from SSL objects in the OpenSSL probe code. The main improvement is the introduction of two helper functions to handle reading the read and write BIOs, which reduces code duplication and streamlines error handling in the probe entry functions.

Refactoring and code simplification:

• Added helper functions process_SSL_rbio and process_SSL_wbio to encapsulate the logic for reading the BIO type and file descriptor from the SSL object's read and write BIOs, respectively. This centralizes error handling and memory access logic.
• Updated probe_entry_SSL_write to use the new process_SSL_wbio function, removing duplicated code for accessing the write BIO and file descriptor. [1] [2]
• Updated probe_entry_SSL_read to use the new process_SSL_rbio function, removing duplicated code for accessing the read BIO and file descriptor.

[github-actions]

✅ E2E Test Results: PASSED

Test Run: #20391124974

Tests Executed:

• TLS/OpenSSL Module (curl → github.com)
• GnuTLS Module (wget/curl → github.com)
• GoTLS Module (Go client → github.com)

✅ All e2e tests passed successfully! The TLS capture functionality is working correctly.

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Automated e2e test results for commit 6eba7c0

[github-actions]

🔧 Debug Build Complete (PR #905)

📦 Download Links:

• View Build Artifacts

⏰ Files will be retained for 7 days, please download and test promptly.

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This build includes debug binaries for: android/linux (arm64/amd64)

[github-actions]

✅ E2E Test Results: PASSED

Test Run: #20391309120

Tests Executed:

• TLS/OpenSSL Module (curl → github.com)
• GnuTLS Module (wget/curl → github.com)
• GoTLS Module (Go client → github.com)

✅ All e2e tests passed successfully! The TLS capture functionality is working correctly.

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Automated e2e test results for commit 31788e0

[github-actions]

🔧 Debug Build Complete (PR #905)

📦 Download Links:

• View Build Artifacts

⏰ Files will be retained for 7 days, please download and test promptly.

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This build includes debug binaries for: android/linux (arm64/amd64)

[Copilot]

Pull request overview

This pull request refactors the OpenSSL BIO and file descriptor extraction logic in the eBPF probe code by introducing helper functions to reduce code duplication and improve maintainability. The changes consolidate repeated logic for reading BIO information from SSL objects.

• Introduced process_SSL_bio helper to extract BIO type and file descriptor from SSL objects
• Introduced probe_entry_SSL and probe_ret_SSL generic helpers to handle SSL read/write probe entry and return logic
• Added should_trace helper to centralize PID/UID filtering logic

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