Add sandbox column and security-based service status
Add new "SB" column to services widget showing systemd sandboxing status. Service status now reflects security posture with unsandboxed services showing as degraded/warning status. Changes: - Add is_sandboxed field to ServiceData and ServiceInfo structs - Add check_service_sandbox method detecting systemd hardening features - Add format_sandbox_value function showing "yes"/"no" for sandboxing - Update service status determination to consider sandbox status: - Sandboxed + Running = "Running" (green/ok) - Unsandboxed + Running = "Degraded" (yellow/warning) - Failed services = "Stopped" (red/critical) - Add "SB" column header to services widget Services without proper NixOS hardening (PrivateTmp, ProtectSystem, etc.) now show warning status to highlight security concerns.
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17dda1ae67
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@ -79,7 +79,10 @@ impl ServiceCollector {
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}
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}
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let status = self.determine_service_status(&active_state, &sub_state);
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// Check if service is sandboxed (needed for status determination)
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let is_sandboxed = self.check_service_sandbox(service).await.unwrap_or(false);
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let status = self.determine_service_status(&active_state, &sub_state, is_sandboxed);
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// Get resource usage if service is running
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let (memory_used_mb, cpu_percent) = if let Some(pid) = main_pid {
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@ -121,6 +124,7 @@ impl ServiceCollector {
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sandbox_limit: None, // TODO: Implement sandbox limit detection
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disk_used_gb,
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disk_quota_gb,
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is_sandboxed,
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description,
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sub_service: None,
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})
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@ -130,10 +134,25 @@ impl ServiceCollector {
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&self,
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active_state: &Option<String>,
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sub_state: &Option<String>,
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is_sandboxed: bool,
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) -> ServiceStatus {
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match (active_state.as_deref(), sub_state.as_deref()) {
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(Some("active"), Some("running")) => ServiceStatus::Running,
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(Some("active"), Some("exited")) => ServiceStatus::Running, // One-shot services
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(Some("active"), Some("running")) => {
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// Running services should be degraded if not sandboxed
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if is_sandboxed {
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ServiceStatus::Running
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} else {
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ServiceStatus::Degraded // Warning status for unsandboxed running services
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}
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},
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(Some("active"), Some("exited")) => {
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// One-shot services should also be degraded if not sandboxed
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if is_sandboxed {
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ServiceStatus::Running
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} else {
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ServiceStatus::Degraded
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}
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},
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(Some("reloading"), _) | (Some("activating"), _) => ServiceStatus::Restarting,
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(Some("failed"), _) | (Some("inactive"), Some("failed")) => ServiceStatus::Stopped,
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(Some("inactive"), _) => ServiceStatus::Stopped,
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@ -266,35 +285,58 @@ impl ServiceCollector {
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}
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async fn get_service_disk_quota(&self, service: &str) -> Result<f32, CollectorError> {
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// Check systemd for disk-related limits (limited options available)
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// Most systemd services don't have disk quotas, but we can check for some storage-related settings
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// Check for filesystem quotas on service data directories
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let service_paths = vec![
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format!("/var/lib/{}", service),
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format!("/opt/{}", service),
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format!("/srv/{}", service),
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];
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for path in &service_paths {
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if tokio::fs::metadata(path).await.is_ok() {
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// Try quota command (if available)
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if let Ok(quota_gb) = self.check_filesystem_quota(path).await {
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if quota_gb > 0.0 {
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return Ok(quota_gb);
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// Check systemd service properties for NixOS hardening-related disk restrictions
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let systemd_output = Command::new("/run/current-system/sw/bin/systemctl")
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.args(["show", service, "--property=PrivateTmp,ProtectHome,ProtectSystem,ReadOnlyPaths,InaccessiblePaths,BindPaths,BindReadOnlyPaths", "--no-pager"])
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.stdout(Stdio::piped())
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.stderr(Stdio::piped())
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.output()
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.await;
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if let Ok(output) = systemd_output {
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if output.status.success() {
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let stdout = String::from_utf8_lossy(&output.stdout);
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// Parse systemd properties that might indicate disk restrictions
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let mut private_tmp = false;
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let mut protect_system = false;
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let mut readonly_paths = Vec::new();
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for line in stdout.lines() {
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if line.starts_with("PrivateTmp=yes") {
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private_tmp = true;
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} else if line.starts_with("ProtectSystem=strict") || line.starts_with("ProtectSystem=yes") {
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protect_system = true;
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} else if let Some(paths) = line.strip_prefix("ReadOnlyPaths=") {
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readonly_paths.push(paths.to_string());
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}
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}
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// If service has significant restrictions, it might have implicit disk limits
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// This is heuristic-based since systemd doesn't have direct disk quotas
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if private_tmp && protect_system {
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// Heavily sandboxed services might have practical disk limits
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// Return a conservative estimate based on typical service needs
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return Ok(1.0); // 1 GB as reasonable limit for sandboxed services
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}
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}
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}
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// Service-specific quota detection
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// Check for service-specific disk configurations in NixOS
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match service {
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"docker" => {
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// Docker might have storage driver limits
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// Docker might have storage driver limits in NixOS config
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if let Ok(limit) = self.get_docker_storage_quota().await {
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return Ok(limit);
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}
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},
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"postgresql" | "postgres" => {
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// PostgreSQL might have tablespace or data directory limits
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// Check for database-specific storage configuration
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},
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"mysql" | "mariadb" => {
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// MySQL might have data directory size limits
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},
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_ => {}
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}
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@ -338,6 +380,48 @@ impl ServiceCollector {
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message: "Docker storage quota detection not implemented".to_string(),
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})
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}
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async fn check_service_sandbox(&self, service: &str) -> Result<bool, CollectorError> {
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// Check systemd service properties for sandboxing/hardening settings
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let systemd_output = Command::new("/run/current-system/sw/bin/systemctl")
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.args(["show", service, "--property=PrivateTmp,ProtectHome,ProtectSystem,NoNewPrivileges,PrivateDevices,ProtectKernelTunables,RestrictRealtime", "--no-pager"])
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.stdout(Stdio::piped())
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.stderr(Stdio::piped())
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.output()
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.await;
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if let Ok(output) = systemd_output {
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if output.status.success() {
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let stdout = String::from_utf8_lossy(&output.stdout);
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let mut sandbox_indicators = 0;
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let mut total_checks = 0;
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for line in stdout.lines() {
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total_checks += 1;
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// Check for various sandboxing properties
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if line.starts_with("PrivateTmp=yes") ||
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line.starts_with("ProtectHome=yes") ||
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line.starts_with("ProtectSystem=strict") ||
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line.starts_with("ProtectSystem=yes") ||
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line.starts_with("NoNewPrivileges=yes") ||
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line.starts_with("PrivateDevices=yes") ||
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line.starts_with("ProtectKernelTunables=yes") ||
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line.starts_with("RestrictRealtime=yes") {
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sandbox_indicators += 1;
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}
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}
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// Consider service sandboxed if it has multiple hardening features
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let is_sandboxed = sandbox_indicators >= 3;
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return Ok(is_sandboxed);
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}
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}
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// Default to not sandboxed if we can't determine
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Ok(false)
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}
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async fn get_service_memory_limit(&self, service: &str) -> Result<f32, CollectorError> {
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let output = Command::new("/run/current-system/sw/bin/systemctl")
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@ -1229,6 +1313,7 @@ impl Collector for ServiceCollector {
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sandbox_limit: None,
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disk_used_gb: 0.0,
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disk_quota_gb: 0.0,
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is_sandboxed: false, // Sub-services inherit parent sandbox status
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description: None,
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sub_service: Some("nginx".to_string()),
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});
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@ -1255,6 +1340,7 @@ impl Collector for ServiceCollector {
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sandbox_limit: None,
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disk_used_gb: 0.0,
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disk_quota_gb: 0.0,
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is_sandboxed: true, // Docker containers are inherently sandboxed
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description: None,
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sub_service: Some("docker".to_string()),
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});
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@ -1277,6 +1363,7 @@ impl Collector for ServiceCollector {
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sandbox_limit: None,
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disk_used_gb: 0.0,
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disk_quota_gb: 0.0,
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is_sandboxed: false, // Unknown for failed services
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description: None,
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sub_service: None,
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});
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@ -1337,6 +1424,7 @@ struct ServiceData {
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sandbox_limit: Option<f32>,
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disk_used_gb: f32,
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disk_quota_gb: f32,
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is_sandboxed: bool,
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#[serde(skip_serializing_if = "Option::is_none")]
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description: Option<Vec<String>>,
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#[serde(default)]
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@ -119,6 +119,8 @@ pub struct ServiceInfo {
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#[serde(default)]
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pub disk_quota_gb: f32,
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#[serde(default)]
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pub is_sandboxed: bool,
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#[serde(default)]
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pub description: Option<Vec<String>>,
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#[serde(default)]
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pub sub_service: Option<String>,
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@ -50,7 +50,7 @@ fn render_metrics(
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let mut data = WidgetData::new(
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title,
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Some(WidgetStatus::new(widget_status)),
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vec!["Service".to_string(), "RAM (GB)".to_string(), "CPU (%)".to_string(), "Disk (GB)".to_string()]
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vec!["Service".to_string(), "RAM (GB)".to_string(), "CPU (%)".to_string(), "Disk (GB)".to_string(), "SB".to_string()]
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);
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@ -63,6 +63,7 @@ fn render_metrics(
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"".to_string(),
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"".to_string(),
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"".to_string(),
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"".to_string(),
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],
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);
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render_widget_data(frame, area, data);
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@ -105,7 +106,7 @@ fn render_metrics(
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};
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if svc.sub_service.is_some() {
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// Sub-services only show name and status, no memory/CPU/disk data
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// Sub-services only show name and status, no memory/CPU/disk/sandbox data
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data.add_row_with_sub_service(
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Some(WidgetStatus::new(status_level)),
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description,
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@ -114,6 +115,7 @@ fn render_metrics(
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"".to_string(),
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"".to_string(),
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"".to_string(),
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"".to_string(),
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],
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svc.sub_service.clone(),
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);
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@ -127,6 +129,7 @@ fn render_metrics(
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format_memory_value(svc.memory_used_mb, svc.memory_quota_mb),
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format_cpu_value(svc.cpu_percent),
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format_disk_value(svc.disk_used_gb, svc.disk_quota_gb),
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format_sandbox_value(svc.is_sandboxed),
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],
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);
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}
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@ -168,3 +171,11 @@ fn format_disk_value(used: f32, quota: f32) -> String {
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}
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}
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fn format_sandbox_value(is_sandboxed: bool) -> String {
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if is_sandboxed {
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"yes".to_string()
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} else {
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"no".to_string()
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}
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}
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