start the path to rust

dist_ts/mail/delivery/smtpserver/utils/validation.d.ts

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+/**
+ * SMTP Validation Utilities
+ * Provides validation functions for SMTP server
+ */
+import { SmtpState } from '../interfaces.js';
+/**
+ * Detects header injection attempts in input strings
+ * @param input - The input string to check
+ * @param context - The context where this input is being used ('smtp-command' or 'email-header')
+ * @returns true if header injection is detected, false otherwise
+ */
+export declare function detectHeaderInjection(input: string, context?: 'smtp-command' | 'email-header'): boolean;
+/**
+ * Sanitizes input by removing or escaping potentially dangerous characters
+ * @param input - The input string to sanitize
+ * @returns Sanitized string
+ */
+export declare function sanitizeInput(input: string): string;
+/**
+ * Validates an email address
+ * @param email - Email address to validate
+ * @returns Whether the email address is valid
+ */
+export declare function isValidEmail(email: string): boolean;
+/**
+ * Validates the MAIL FROM command syntax
+ * @param args - Arguments string from the MAIL FROM command
+ * @returns Object with validation result and extracted data
+ */
+export declare function validateMailFrom(args: string): {
+    isValid: boolean;
+    address?: string;
+    params?: Record<string, string>;
+    errorMessage?: string;
+};
+/**
+ * Validates the RCPT TO command syntax
+ * @param args - Arguments string from the RCPT TO command
+ * @returns Object with validation result and extracted data
+ */
+export declare function validateRcptTo(args: string): {
+    isValid: boolean;
+    address?: string;
+    params?: Record<string, string>;
+    errorMessage?: string;
+};
+/**
+ * Validates the EHLO command syntax
+ * @param args - Arguments string from the EHLO command
+ * @returns Object with validation result and extracted data
+ */
+export declare function validateEhlo(args: string): {
+    isValid: boolean;
+    hostname?: string;
+    errorMessage?: string;
+};
+/**
+ * Validates command in the current SMTP state
+ * @param command - SMTP command
+ * @param currentState - Current SMTP state
+ * @returns Whether the command is valid in the current state
+ */
+export declare function isValidCommandSequence(command: string, currentState: SmtpState): boolean;
+/**
+ * Validates if a hostname is valid according to RFC 5321
+ * @param hostname - Hostname to validate
+ * @returns Whether the hostname is valid
+ */
+export declare function isValidHostname(hostname: string): boolean;