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Fixes for Cisco ASA model (asa.rb) #3372

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@tschafer tschafer commented Jan 15, 2025

Pre-Request Checklist

  • Passes rubocop code analysis (try rubocop --auto-correct)
  • Tests added or adapted (try rake test)
  • Changes are reflected in the documentation
  • User-visible changes appended to CHANGELOG.md

Description

  1. Hide secrets for ipsec pre-shared-keys specified with "hex" qualifier
  2. Remove boot process timer output from "show version" to prevent extraneous commits

Summary by CodeRabbit

  • Bug Fixes
    • Improved parsing of pre-shared key configurations for IKEv1 and IKEv2
    • Removed start-up time information from version output to enhance configuration clarity

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coderabbitai bot commented Jan 15, 2025

Walkthrough

The pull request introduces modifications to the Cisco ASA model parsing logic in the Oxidized library. The changes focus on improving the regular expression patterns for handling pre-shared key configurations and removing start-up time information from the device version output. These updates enhance the model's ability to parse complex ASA device configurations more accurately and cleanly.

Changes

File Change Summary
lib/oxidized/model/asa.rb - Updated regex to handle optional "hex" suffix in pre-shared key configurations
- Added regex to remove "Start-up time" line from 'show version' command output

Poem

🐰 In the realm of network gear so bright,
A regex dance of parsing might,
ASA secrets now hidden with care,
No start-up time to linger there,
Oxidized hops with clever delight! 🔧

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Actionable comments posted: 0

🧹 Nitpick comments (1)
lib/oxidized/model/asa.rb (1)

Line range hint 18-41: Consider adding documentation and tests.

While the changes look good, consider:

  1. Adding comments explaining the regex patterns for future maintenance
  2. Including test cases that verify:
    • Pre-shared key masking with hex qualifier
    • Proper removal of start-up time information

Would you like me to help create test cases for these scenarios?

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 7fb4f09 and 741a7da.

📒 Files selected for processing (1)
  • lib/oxidized/model/asa.rb (2 hunks)
🔇 Additional comments (2)
lib/oxidized/model/asa.rb (2)

41-41: Verify the regex pattern's specificity.

While removing start-up time information aligns with the existing cleanup patterns, let's ensure the pattern ^Start-up time.*\n doesn't accidentally match other valuable information.

Let's verify the pattern's specificity:

✅ Verification successful

Regex pattern ^Start-up time.*\n is safe and specific

The pattern is well-anchored and specifically targets start-up time entries without risk of unintended matches.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify the start-up time pattern doesn't match critical information

# Test: Search for variations of start-up time messages
rg -i "^Start-up" --type-add 'config:*.{conf,cfg,txt}' -t config -A 2 -B 2

# Test: Look for similar patterns that might be affected
rg -i "^(Start|Boot|System).*(time|timer)" --type-add 'config:*.{conf,cfg,txt}' -t config -A 2 -B 2

Length of output: 663


18-18: LGTM! Verify the regex handles all pre-shared key formats.

The enhanced regex pattern correctly handles the 'hex' qualifier while maintaining existing functionality.

Let's verify the regex handles all possible pre-shared key formats:

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