Check content is not nil

dwertent commented 7 months ago

User description

Overview

Type

bug_fix

Description

Added checks to ensure sbomp.Content and sbom.Content are not nil before iterating over their artifacts in ScanCVE method.
This change prevents runtime errors that could occur when these objects are nil, enhancing the robustness of the SBOM update logic.

Changes walkthrough

Relevant files

Bug fix

scan.go

Add nil checks before accessing SBOM content artifacts

core/services/scan.go

Added nil checks for sbomp.Content and sbom.Content before iterating
over artifacts.

Ensures that the code does not attempt to access properties of nil
objects, preventing potential runtime panics.

+7/-5

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codiumai-pr-agent-free[bot] commented 7 months ago

PR Description updated to latest commit (https://github.com/kubescape/kubevuln/commit/ad276e6397369f455614d771a53acde8c49d76b7)

github-actions[bot] commented 7 months ago

Summary:

License scan: failure
Credentials scan: failure
Vulnerabilities scan: failure
Unit test: success
Go linting: success

codiumai-pr-agent-free[bot] commented 7 months ago

PR Review

⏱️ Estimated effort to review [1-5]	2, because the changes are localized to a specific function and involve adding simple nil checks to prevent runtime errors. The logic is straightforward and the impact is limited to the `ScanCVE` method.
🧪 Relevant tests	No
🔍 Possible issues	Possible Bug: If either `sbomp.Content` or `sbom.Content` is nil, the loop for updating artifacts is skipped entirely. This might be intended behavior, but it could also lead to scenarios where necessary updates are not performed, potentially leaving the system in an inconsistent state if other parts of the system expect these updates to have occurred.
🔒 Security concerns	No

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codiumai-pr-agent-free[bot] commented 7 months ago

PR Code Suggestions

Category	Suggestions
Bug	Correct the condition to check if the objects themselves are not nil before accessing their properties. ___ The condition `sbomp.Content != nil && sbom.Content != nil` might be incorrect due to a possible typo. It seems like the intent was to check if `sbomp` and `sbom` are not nil before accessing their properties. Correct the condition to ensure that both `sbomp` and `sbom` are not nil. [core/services/scan.go [231]](https://github.com/kubescape/kubevuln/pull/225/files#diff-85deac1fd3ad15a30ddc8a15245049faf294923a8058adfb7c47994034b662d8R231-R231) ```diff -if sbomp.Content != nil && sbom.Content != nil { +if sbomp != nil && sbom != nil { ```
Bug	Add error handling for nil checks to prevent runtime panics. ___ Add error handling for the case where `sbomp` or `sbom` is nil to prevent runtime panics. This is crucial since accessing properties of a nil object will cause a panic in Go. [core/services/scan.go [231]](https://github.com/kubescape/kubevuln/pull/225/files#diff-85deac1fd3ad15a30ddc8a15245049faf294923a8058adfb7c47994034b662d8R231-R231) ```diff +if sbomp == nil \|\| sbom == nil { + return errors.New("sbomp or sbom is nil") +} if sbomp.Content != nil && sbom.Content != nil { ```
Performance	Replace the nested loop with a map for more efficient artifact updates. ___ Consider using a map for a more efficient lookup instead of a nested loop for updating artifacts. This will improve the performance by reducing the time complexity from O(n^2) to O(n). [core/services/scan.go [232-237]](https://github.com/kubescape/kubevuln/pull/225/files#diff-85deac1fd3ad15a30ddc8a15245049faf294923a8058adfb7c47994034b662d8R232-R237) ```diff -for i := range sbomp.Content.Artifacts { - for j := range sbom.Content.Artifacts { - if sbomp.Content.Artifacts[i].ID == sbom.Content.Artifacts[j].ID { - sbomp.Content.Artifacts[i] = sbom.Content.Artifacts[j] - break - } +artifactsMap := make(map[string]domain.Artifact) +for _, artifact := range sbom.Content.Artifacts { + artifactsMap[artifact.ID] = artifact +} +for i, artifact := range sbomp.Content.Artifacts { + if updated, ok := artifactsMap[artifact.ID]; ok { + sbomp.Content.Artifacts[i] = updated } } ```
Performance	Break out of all loops once a match is found to improve efficiency. ___ Consider breaking out of the outer loop as well once a match is found and updated, to avoid unnecessary iterations. [core/services/scan.go [232-237]](https://github.com/kubescape/kubevuln/pull/225/files#diff-85deac1fd3ad15a30ddc8a15245049faf294923a8058adfb7c47994034b662d8R232-R237) ```diff +outerLoop: for i := range sbomp.Content.Artifacts { for j := range sbom.Content.Artifacts { if sbomp.Content.Artifacts[i].ID == sbom.Content.Artifacts[j].ID { sbomp.Content.Artifacts[i] = sbom.Content.Artifacts[j] - break + break outerLoop } } } ```
Maintainability	Use more descriptive loop variable names to enhance code readability. ___ Use a more descriptive variable name than `i` and `j` in the loops to enhance code readability and maintainability. [core/services/scan.go [232-233]](https://github.com/kubescape/kubevuln/pull/225/files#diff-85deac1fd3ad15a30ddc8a15245049faf294923a8058adfb7c47994034b662d8R232-R233) ```diff -for i := range sbomp.Content.Artifacts { - for j := range sbom.Content.Artifacts { +for idxSbomp := range sbomp.Content.Artifacts { + for idxSbom := range sbom.Content.Artifacts { ```

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kubescape / kubevuln