quincy 2.1.1

QUIC-based VPN - Core library
Documentation 
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use crate::Result;
use std::net::IpAddr;
use wintun_bindings::Adapter;

/// Adds a list of DNS servers to all network services on the endpoint.
///
/// ### Arguments
/// - `dns_servers` - the DNS servers to be added
/// - `interface_name` - the name of the interface to add the DNS servers to (unused)
pub fn add_dns_servers(dns_servers: &[IpAddr], interface_name: &str) -> Result<()> {
    let wintun = unsafe {
        // SAFETY: signature verification is enabled in the WinTun library
        wintun_bindings::load().map_err(|e| crate::error::DnsError::PlatformError {
            message: format!("failed to load WinTun library: {e}"),
        })?
    };

    let adapter = Adapter::open(&wintun, interface_name).map_err(|e| {
        crate::error::DnsError::PlatformError {
            message: format!("failed to open adapter: {e}"),
        }
    })?;
    adapter
        .set_dns_servers(dns_servers)
        .map_err(|_e| crate::error::DnsError::ConfigurationFailed)?;

    Ok(())
}

/// Deletes all DNS servers from the given interface.
///
/// No-op on Windows.
pub fn delete_dns_servers() -> Result<()> {
    // This is a no-op on Windows as the interface is deleted when the process exits
    // along with its routes and DNS servers
    Ok(())
}