SSH Config Panic Handler

[oneirocosm]

Match statements in files that are included in an ssh config still seem to cause panics with the ssh_config library. This adds a panic handler to catch them, and prevent the app from crashing. It does not resolve the underlying issue which will need to be done later.

[coderabbitai]

Walkthrough

The pull request introduces modifications to the sshclient.go file in the pkg/remote package, focusing on enhancing error handling and panic management for SSH client operations. The primary changes involve updating the findSshConfigKeywords function to implement more robust error handling mechanisms.

A key modification is the integration of a panic handler from the github.com/wavetermdev/waveterm/pkg/panichandler package. This addition allows for more comprehensive error capture and management during SSH configuration keyword processing. The function's return signature has been adjusted to support named return values, enabling more explicit error tracking.

The changes also refine the error handling approach in the createPublicKeyCallback function, improving the method's ability to manage issues related to identity files and SSH keys. The implementation now provides more resilient processing, allowing the function to skip problematic keys without causing a complete system failure.

These modifications aim to enhance the reliability and error management capabilities of the SSH client implementation, ensuring more graceful handling of potential configuration and connection-related challenges.

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[coderabbitai]

Actionable comments posted: 0

🧹 Nitpick comments (1)

pkg/remote/sshclient.go (1)

754-760: Consider preserving any existing errors alongside the panic error.
Currently, if the function encounters both an in-function error (assigned to outErr) and a panic, the panic error overwrites the existing error. This may hide helpful context for debugging. Consider wrapping or appending the panic error to the existing error rather than replacing it.

Below is a possible approach to preserving both errors:

defer func() {
  err := panichandler.PanicHandler("sshclient:find-ssh-config-keywords")
  if err != nil {
-   outErr = err
+   if outErr != nil {
+     outErr = fmt.Errorf("original error: %v | panic error: %w", outErr, err)
+   } else {
+     outErr = err
+   }
  }
}()

📜 Review details

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📥 Commits

Reviewing files that changed from the base of the PR and between f12a226 and 8de5021.

📒 Files selected for processing (1)

• pkg/remote/sshclient.go (2 hunks)

🔇 Additional comments (1)

pkg/remote/sshclient.go (1)

26-26: New import appears correct and aligns with the PR’s objectives.
The import "github.com/wavetermdev/waveterm/pkg/panichandler" is introduced here, presumably to capture and handle panics within the SSH config reading logic. This seems consistent with the PR objective.