skip raspi deps/config if not on raspi platform

[raul-marquez-csa]

No description provided.

[gemini-code-assist]

Summary of Changes

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This pull request enhances the robustness of the setup scripts by introducing platform-specific checks. It ensures that Raspberry Pi-specific dependency installations and machine configurations are only applied when the script is executed on a Raspberry Pi, preventing errors or unnecessary operations on other platforms like WSL or generic Ubuntu environments.

Highlights

• Conditional Script Execution: Raspberry Pi-specific dependency installation and machine configuration steps are now conditionally executed only when detected on a Raspberry Pi, preventing execution on other platforms.
• WSL Detection: The install-pi-dependencies.sh script now includes logic to detect if it's running in Windows Subsystem for Linux (WSL), allowing it to skip Raspberry Pi-specific steps and provide appropriate messaging.
• Platform Detection Utilities: New utility functions, is_running_on_raspberry_pi and is_running_in_wsl, were added to scripts/utils.sh to centralize and facilitate platform-specific logic across scripts.

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Changelog

• backend
  • Updated the backend submodule to a newer commit.
• scripts/pi-setup/install-pi-dependencies.sh
  • Added conditional logic to exit early if not running on a Raspberry Pi or if running in WSL.
• scripts/ubuntu/2-machine-cofiguration.sh
  • Wrapped the WiFi setup (wpa_supplicant service creation and configuration) within a Raspberry Pi detection block.
  • Wrapped WLAN-specific sysctl settings within a Raspberry Pi detection block.
  • Added messages for skipping WiFi configuration when not on a Raspberry Pi or in WSL.
• scripts/utils.sh
  • Added is_running_on_raspberry_pi function to detect if the script is running on a Raspberry Pi.
  • Added is_running_in_wsl function to detect if the script is running in Windows Subsystem for Linux.

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Code Review

This pull request introduces logic to skip Raspberry Pi-specific dependency installation and configuration when the scripts are not run on a Raspberry Pi platform, making the scripts more robust for different environments like WSL. However, a potential configuration injection vulnerability was identified in scripts/ubuntu/2-machine-cofiguration.sh where the WLAN_INTERFACE environment variable is used unsafely to construct sysctl settings. Additionally, I've provided a couple of suggestions to further refine the new code for better conciseness and maintainability.