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<!doctype html> <html lang="en"> <head> <title>Code coverage report for src/middleware/validation.ts</title> <meta charset="utf-8" /> <link rel="stylesheet" href="../../prettify.css" /> <link rel="stylesheet" href="../../base.css" /> <link rel="shortcut icon" type="image/x-icon" href="../../favicon.png" /> <meta name="viewport" content="width=device-width, initial-scale=1" /> <style type='text/css'> .coverage-summary .sorter { background-image: url(../../sort-arrow-sprite.png); } </style> </head> <body> <div class='wrapper'> <div class='pad1'> <h1><a href="../../index.html">All files</a> / <a href="index.html">src/middleware</a> validation.ts</h1> <div class='clearfix'> <div class='fl pad1y space-right2'> 0% Statements 0/104 </div> <div class='fl pad1y space-right2'> 0% Branches 0/55 </div> <div class='fl pad1y space-right2'> 0% Functions 0/26 </div> <div class='fl pad1y space-right2'> 0% Lines 0/98 </div> </div> Press n or j to go to the next uncovered block, b, p or k for the previous block. <template id="filterTemplate"> <div class="quiet"> Filter: <input type="search" id="fileSearch"> </div> </template> </div> <div class='status-line low'></div> <pre><table class="coverage"> <tr><td class="line-count quiet"><a name='L1'></a><a href='#L1'>1</a> <a name='L2'></a><a href='#L2'>2</a> <a name='L3'></a><a href='#L3'>3</a> <a name='L4'></a><a href='#L4'>4</a> <a name='L5'></a><a href='#L5'>5</a> <a name='L6'></a><a href='#L6'>6</a> <a name='L7'></a><a href='#L7'>7</a> <a name='L8'></a><a href='#L8'>8</a> <a name='L9'></a><a href='#L9'>9</a> <a name='L10'></a><a href='#L10'>10</a> <a name='L11'></a><a href='#L11'>11</a> <a name='L12'></a><a href='#L12'>12</a> <a name='L13'></a><a href='#L13'>13</a> <a name='L14'></a><a href='#L14'>14</a> <a name='L15'></a><a href='#L15'>15</a> <a name='L16'></a><a href='#L16'>16</a> <a name='L17'></a><a href='#L17'>17</a> <a name='L18'></a><a href='#L18'>18</a> <a name='L19'></a><a href='#L19'>19</a> <a name='L20'></a><a 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                                                                                                                                                                                                                                                                                                                             </td><td class="text"><pre class="prettyprint lang-js">import { Request, Response, NextFunction } from 'express'; import { z, ZodSchema, ZodError } from 'zod'; import { InputValidator } from '../utils/input-sanitizer';   /** * Validation result interface */ interface ValidationResult { success: boolean; data?: any; errors?: ValidationError[]; }   /** * Validation error structure */ interface ValidationError { field: string; message: string; code: string; value?: any; }   /** * Validation middleware options */ export interface ValidationOptions { /** Validate request body */ body?: ZodSchema; /** Validate query parameters */ query?: ZodSchema; /** Validate URL parameters */ params?: ZodSchema; /** Validate request headers */ headers?: ZodSchema; /** Strip unknown fields from the validated data */ stripUnknown?: boolean; /** Allow partial validation (useful for PATCH requests) */ partial?: boolean; /** Custom error message */ errorMessage?: string; /** Additional security validation */ securityChecks?: boolean; /** Sanitize after validation */ sanitize?: boolean; }   /** * Common Zod schemas for API validation */ export const CommonSchemas = { /** Standard pagination parameters */ pagination: z.object({ page: z.coerce.number().int().min(1).default(1), limit: z.coerce.number().int().min(1).max(100).default(20), offset: z.coerce.number().int().min(0).optional(), }),   /** Form ID parameter validation */ formId: z.object({ formId: z.string().min(1, 'Form ID is required').refine( (val) => InputValidator.isValidId(val), 'Form ID contains invalid characters' ), }),   /** Workspace ID parameter validation */ workspaceId: z.object({ workspaceId: z.string().min(1, 'Workspace ID is required').refine( (val) => InputValidator.isValidId(val), 'Workspace ID contains invalid characters' ), }),   /** User ID parameter validation */ userId: z.object({ userId: z.string().min(1, 'User ID is required').refine( (val) => InputValidator.isValidId(val), 'User ID contains invalid characters' ), }),   /** Submission ID parameter validation */ submissionId: z.object({ submissionId: z.string().min(1, 'Submission ID is required').refine( (val) => InputValidator.isValidId(val), 'Submission ID contains invalid characters' ), }),   /** Date range query validation */ dateRange: z.object({ startDate: z.string().datetime().optional(), endDate: z.string().datetime().optional(), timezone: z.string().optional(), }).refine( (data) => { Iif (data.startDate && data.endDate) { return new Date(data.startDate) <= new Date(data.endDate); } return true; }, 'Start date must be before or equal to end date' ),   /** File upload validation */ fileUpload: z.object({ filename: z.string().min(1).max(255), mimetype: z.string().refine( (val) => /^[a-zA-Z0-9][a-zA-Z0-9!#$&\-\^_]*\/[a-zA-Z0-9][a-zA-Z0-9!#$&\-\^_.]*$/.test(val), 'Invalid MIME type format' ), size: z.number().int().min(1).max(50 * 1024 * 1024), // 50MB max }),   /** API key validation */ apiKey: z.object({ apiKey: z.string().min(20).max(200).refine( (val) => /^[A-Za-z0-9_\-]+$/.test(val), 'API key contains invalid characters' ), }),   /** Email validation */ email: z.object({ email: z.string().email('Invalid email format').refine( (val) => InputValidator.isValidEmail(val), 'Email contains potentially unsafe characters' ), }),   /** URL validation */ url: z.object({ url: z.string().url('Invalid URL format').refine( (val) => InputValidator.isValidUrl(val), 'URL contains unsafe protocol or characters' ), }),   /** Search query validation */ search: z.object({ q: z.string().min(1).max(200).refine( (val) => !InputValidator.containsSqlInjectionPatterns(val), 'Search query contains potentially dangerous patterns' ).refine( (val) => !InputValidator.containsXssPatterns(val), 'Search query contains potentially malicious content' ), fields: z.array(z.string()).optional(), sort: z.enum(['asc', 'desc']).optional(), }), };   /** * Creates a validation middleware with the specified schemas */ export function createValidationMiddleware(options: ValidationOptions) { return (req: Request, res: Response, next: NextFunction): void => { const errors: ValidationError[] = [];   try { // Validate request body Iif (options.body) { const bodyResult = validateData(req.body || {}, options.body, 'body', options); if (!bodyResult.success) { errors.push(...bodyResult.errors!); } else { req.body = bodyResult.data; } }   // Validate query parameters Iif (options.query) { const queryResult = validateData(req.query || {}, options.query, 'query', options); if (!queryResult.success) { errors.push(...queryResult.errors!); } else { req.query = queryResult.data; } }   // Validate URL parameters Iif (options.params) { const paramsResult = validateData(req.params || {}, options.params, 'params', options); if (!paramsResult.success) { errors.push(...paramsResult.errors!); } else { req.params = paramsResult.data; } }   // Validate headers Iif (options.headers) { const headersResult = validateData(req.headers || {}, options.headers, 'headers', options); Iif (!headersResult.success) { errors.push(...headersResult.errors!); } }   // Additional security checks Iif (options.securityChecks) { const securityErrors = performSecurityChecks(req); errors.push(...securityErrors); }   // If there are validation errors, respond with error Iif (errors.length > 0) { res.status(400).json({ error: 'Validation failed', message: options.errorMessage || 'Request data is invalid', details: errors, }); return; }   next(); } catch (error) { res.status(500).json({ error: 'Validation error', message: 'An error occurred during request validation', }); return; } }; }   /** * Validates data against a Zod schema */ function validateData( data: any, schema: ZodSchema, field: string, options: ValidationOptions ): ValidationResult { try { let processedSchema = schema; // Apply partial validation if requested Iif (options.partial && 'partial' in schema) { processedSchema = (schema as any).partial(); }   // Strip unknown fields if requested Iif (options.stripUnknown && 'strip' in processedSchema) { processedSchema = (processedSchema as any).strip(); }   const result = processedSchema.parse(data); return { success: true, data: result, }; } catch (error) { Iif (error instanceof ZodError) { const errors: ValidationError[] = error.errors.map(err => ({ field: `${field}.${err.path.join('.')}`, message: err.message, code: err.code, value: err.path.reduce((obj, key) => obj?.[key], data), }));   return { success: false, errors, }; }   return { success: false, errors: [{ field, message: 'Validation failed', code: 'validation_error', }], }; } }   /** * Performs additional security checks on the request */ function performSecurityChecks(req: Request): ValidationError[] { const errors: ValidationError[] = [];   // Check for suspicious patterns in all string values const checkObject = (obj: any, prefix: string) => { if (typeof obj === 'string') { Iif (InputValidator.containsSqlInjectionPatterns(obj)) { errors.push({ field: prefix, message: 'Contains potential SQL injection patterns', code: 'security_violation', value: obj, }); } Iif (InputValidator.containsXssPatterns(obj)) { errors.push({ field: prefix, message: 'Contains potential XSS patterns', code: 'security_violation', value: obj, }); } } else Iif (typeof obj === 'object' && obj !== null) { Object.keys(obj).forEach(key => { checkObject(obj[key], `${prefix}.${key}`); }); } };   // Check body, query, and params Iif (req.body) checkObject(req.body, 'body'); Iif (req.query) checkObject(req.query, 'query'); Iif (req.params) checkObject(req.params, 'params');   // Check for excessively long values that might be attack attempts const checkLength = (obj: any, prefix: string, maxLength: number = 10000) => { if (typeof obj === 'string' && obj.length > maxLength) { errors.push({ field: prefix, message: `Value exceeds maximum length of ${maxLength} characters`, code: 'length_violation', value: `${obj.substring(0, 100)}...`, }); } else Iif (typeof obj === 'object' && obj !== null) { Object.keys(obj).forEach(key => { checkLength(obj[key], `${prefix}.${key}`, maxLength); }); } };   Iif (req.body) checkLength(req.body, 'body'); Iif (req.query) checkLength(req.query, 'query', 1000); // Shorter limit for query params   return errors; }   /** * Pre-built validation middleware for common scenarios */ export const ValidationMiddleware = { /** Validate pagination parameters */ pagination: createValidationMiddleware({ query: CommonSchemas.pagination, }),   /** Validate form ID in URL parameters */ formParams: createValidationMiddleware({ params: CommonSchemas.formId, securityChecks: true, }),   /** Validate workspace ID in URL parameters */ workspaceParams: createValidationMiddleware({ params: CommonSchemas.workspaceId, securityChecks: true, }),   /** Validate user ID in URL parameters */ userParams: createValidationMiddleware({ params: CommonSchemas.userId, securityChecks: true, }),   /** Validate submission ID in URL parameters */ submissionParams: createValidationMiddleware({ params: CommonSchemas.submissionId, securityChecks: true, }),   /** Validate search queries */ search: createValidationMiddleware({ query: CommonSchemas.search, securityChecks: true, }),   /** Validate file upload metadata */ fileUpload: createValidationMiddleware({ body: CommonSchemas.fileUpload, securityChecks: true, }),   /** Validate API key authentication */ apiKey: createValidationMiddleware({ headers: z.object({ 'x-api-key': z.string().min(20).max(200), }), securityChecks: true, }),   /** Comprehensive validation for MCP tool requests */ mcpRequest: createValidationMiddleware({ body: z.object({ method: z.string().min(1).max(100), params: z.record(z.any()).optional(), }), stripUnknown: true, securityChecks: true, }), };   /** * Helper function to validate data outside of middleware context */ export function validateWithSchema<T>( data: unknown, schema: ZodSchema<T>, options: { stripUnknown?: boolean; partial?: boolean } = {} ): { success: true; data: T } | { success: false; errors: ValidationError[] } { const result = validateData(data, schema, 'data', options); Iif (result.success) { return { success: true, data: result.data }; } return { success: false, errors: result.errors! }; }   /** * Creates a typed validator function for a specific schema */ export function createTypedValidator<T>(schema: ZodSchema<T>) { return (data: unknown): data is T => { try { schema.parse(data); return true; } catch { return false; } }; }   /** * Error response formatter for validation failures */ export function formatValidationError(errors: ValidationError[]) { return { error: 'Validation failed', message: 'The provided data is invalid', details: errors.map(err => ({ field: err.field, message: err.message, code: err.code, })), }; } </pre></td></tr></table></pre> <div class='push'></div> </div> <div class='footer quiet pad2 space-top1 center small'> Code coverage generated by <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a> at 2025-06-14T19:57:51.285Z </div> <script src="../../prettify.js"></script> <script> window.onload = function () { prettyPrint(); }; </script> <script src="../../sorter.js"></script> <script src="../../block-navigation.js"></script> </body> </html>

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