Function ValidateHostConfig

internal/sshconfig/hostconfig.go:68–163

ValidateHostConfig validates a host configuration

(cfg *HostConfig)

// ValidateHostConfig validates a host configuration
func ValidateHostConfig(cfg *HostConfig) error {
	var errs []string

	// Validate required fields
	if cfg.Name == "" {
		errs = append(errs, "host name is required")
	}
	if strings.ContainsAny(cfg.Name, " \t\n") {
		errs = append(errs, "host name cannot contain whitespace")
	}

	// Special handling for Host *
	if cfg.Name == "*" || cfg.IsGlobal {
		cfg.IsGlobal = true
		// For global configs, Hostname is optional
	} else {
		// For regular hosts, Hostname is required
		if cfg.Hostname == "" {
			errs = append(errs, "hostname is required")
		}
	}

	// Validate port
	if cfg.Port != "" {
		port, err := strconv.Atoi(cfg.Port)
		if err != nil || port < 1 || port > 65535 {
			errs = append(errs, "port must be between 1 and 65535")
		}
	}

	// Validate proxy configuration (mutually exclusive)
	if cfg.ProxyCommand != "" && cfg.ProxyJump != "" {
		errs = append(errs, "cannot specify both ProxyCommand and ProxyJump")
	}

	// Validate ForwardAgent
	if cfg.ForwardAgent != "" {
		fa := strings.ToLower(cfg.ForwardAgent)
		if fa != "yes" && fa != "no" {
			errs = append(errs, "ForwardAgent must be 'yes' or 'no'")
		}
	}

	// Validate ServerAliveCountMax
	if cfg.ServerAliveCountMax != "" {
		count, err := strconv.Atoi(cfg.ServerAliveCountMax)
		if err != nil || count < 0 {
			errs = append(errs, "ServerAliveCountMax must be a non-negative integer")
		}
	}

	// Validate AddKeysToAgent
	if cfg.AddKeysToAgent != "" {
		val := strings.ToLower(cfg.AddKeysToAgent)
		if val != "yes" && val != "no" && val != "ask" && val != "confirm" {
			errs = append(errs, "AddKeysToAgent must be 'yes', 'no', 'ask', or 'confirm'")
		}
	}