Function get_proxy_from_gsettings

launcher/utils.py:198–270

Retrieves the proxy settings from GSettings on Linux systems. Returns a proxy string like "http://host:port" or None.

()

def get_proxy_from_gsettings() -> Optional[str]:
    """
    Retrieves the proxy settings from GSettings on Linux systems.
    Returns a proxy string like "http://host:port" or None.
    """

    def _run_gsettings_command(command_parts: List[str]) -> Optional[str]:
        """Helper function to run gsettings command and return cleaned string output."""
        try:
            process_result = subprocess.run(
                command_parts,
                capture_output=True,
                text=True,
                check=False,  # Do not raise CalledProcessError for non-zero exit codes
                timeout=1,  # Timeout for the subprocess call
            )
            if process_result.returncode == 0:
                value = process_result.stdout.strip()
                if value.startswith("'") and value.endswith(
                    "'"
                ):  # Remove surrounding single quotes
                    value = value[1:-1]

                # If after stripping quotes, value is empty, or it's a gsettings "empty" representation
                if not value or value == "''" or value == "@as []" or value == "[]":
                    return None
                return value
            else:
                return None
        except subprocess.TimeoutExpired:
            return None
        except Exception:  # Broad exception as per pseudocode
            return None

    proxy_mode = _run_gsettings_command(
        ["gsettings", "get", "org.gnome.system.proxy", "mode"]
    )

    if proxy_mode == "manual":
        # Try HTTP proxy first
        http_host = _run_gsettings_command(
            ["gsettings", "get", "org.gnome.system.proxy.http", "host"]
        )
        http_port_str = _run_gsettings_command(
            ["gsettings", "get", "org.gnome.system.proxy.http", "port"]
        )

        if http_host and http_port_str:
            try:
                http_port = int(http_port_str)
                if http_port > 0:
                    return f"http://{http_host}:{http_port}"
            except ValueError:
                pass  # Continue to HTTPS

        # Try HTTPS proxy if HTTP not found or invalid
        https_host = _run_gsettings_command(
            ["gsettings", "get", "org.gnome.system.proxy.https", "host"]