feat(launchpad): escalate to sudo mode if required automatically

This adds a check for sudo/admin priviliges, bailing if we cannot automatically escalate.

sn_node_launchpad/Cargo.toml

@@ -58,6 +58,7 @@ tracing-error = "0.2.0"
 tracing-subscriber = { version = "0.3.17", features = ["env-filter", "serde"] }
 tui-input = "0.8.0"
 which = "6.0.1"
+nix = { version = "0.28.0", features = ["user"] }
 
 [build-dependencies]
 vergen = { version = "8.2.6", features = ["build", "git", "gitoxide", "cargo"] }

sn_node_launchpad/src/bin/tui/main.rs

@@ -7,7 +7,9 @@
 // permissions and limitations relating to use of the SAFE Network Software.
 
 use clap::Parser;
-use color_eyre::eyre::Result;
+use color_eyre::eyre::{bail, Result};
+use std::env;
+use std::process::Command;
 use tokio::task::LocalSet;
 
 use sn_node_launchpad::{
@@ -49,8 +51,36 @@ async fn tokio_main() -> Result<()> {
     Ok(())
 }
 
+#[cfg(not(windows))]
+fn is_running_root() -> bool {
+    use nix::unistd::geteuid;
+    geteuid().is_root()
+}
+
+#[cfg(windows)]
+fn is_running_root() -> bool {
+    // Example: Attempt to read from a typically restricted system directory
+    std::fs::read_dir("C:\\Windows\\System32\\config").is_ok()
+}
+
 #[tokio::main]
 async fn main() -> Result<()> {
+    if !is_running_root() {
+        #[cfg(windows)]
+        {
+            bail!("Admin privilges required to run");
+        }
+
+        // Attempt to elevate privileges using sudo
+        let exe = env::current_exe()?;
+        let status = Command::new("sudo").arg(exe).status()?;
+
+        if !status.success() {
+            bail!("Failed to gain root privileges.");
+        }
+        return Ok(());
+    }
+
     // Construct a local task set that can run `!Send` futures.
     let local = LocalSet::new();
     local