Mattsson
00e7ac92ae
Add optional image and PDF attachments to the existing in-app support contact form, with client-side limits, server-side validation, and email delivery. Preserve the existing subject, rate-limit, analytics, and storage behavior.
95 lines
3.7 KiB
TypeScript
95 lines
3.7 KiB
TypeScript
import { readFileSync } from 'node:fs'
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import { join } from 'node:path'
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import { describe, it, expect } from 'vitest'
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import {
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SUPPORT_ATTACHMENT_ACCEPT,
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SUPPORT_MAX_ATTACHMENTS,
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SUPPORT_MAX_ATTACHMENT_TOTAL_BYTES,
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SUPPORT_MAX_ATTACHMENT_TOTAL_MB,
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isSupportedAttachmentType,
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sanitizeAttachmentFilename,
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supportAttachmentFilename,
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} from '@/lib/support/attachments'
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import { HOSTED_REQUEST_BODY_LIMIT_BYTES } from '@/lib/documents/upload-size'
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describe('support attachments', () => {
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it('accepts the types a support reader can open', () => {
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expect(isSupportedAttachmentType('image/png')).toBe(true)
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expect(isSupportedAttachmentType('IMAGE/JPEG')).toBe(true)
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expect(isSupportedAttachmentType('application/pdf')).toBe(true)
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})
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it('rejects everything else, including a missing type', () => {
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expect(isSupportedAttachmentType('application/x-sh')).toBe(false)
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expect(isSupportedAttachmentType('image/heic')).toBe(false)
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expect(isSupportedAttachmentType(undefined)).toBe(false)
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expect(isSupportedAttachmentType('')).toBe(false)
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})
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it('offers the same list to the file picker', () => {
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expect(SUPPORT_ATTACHMENT_ACCEPT).toBe('image/jpeg,image/png,image/webp,application/pdf')
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})
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it('allows five files with a four megabyte combined budget', () => {
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expect(SUPPORT_MAX_ATTACHMENTS).toBe(5)
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expect(SUPPORT_MAX_ATTACHMENT_TOTAL_MB).toBe(4)
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expect(SUPPORT_MAX_ATTACHMENT_TOTAL_BYTES).toBe(4 * 1024 * 1024)
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})
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// Vercel kills the request before the route runs if the body is over its own
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// ceiling, so the budget has to leave room for the multipart envelope.
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it('stays under the platform request-body ceiling', () => {
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expect(SUPPORT_MAX_ATTACHMENT_TOTAL_BYTES).toBeLessThan(HOSTED_REQUEST_BODY_LIMIT_BYTES)
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})
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describe('sanitizeAttachmentFilename', () => {
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it('keeps an ordinary name', () => {
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expect(sanitizeAttachmentFilename('skarmbild.png')).toBe('skarmbild.png')
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})
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it('drops path segments from both separators', () => {
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expect(sanitizeAttachmentFilename('../../etc/passwd.png')).toBe('passwd.png')
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expect(sanitizeAttachmentFilename('C:\\Users\\emil\\bild.png')).toBe('bild.png')
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})
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it('strips control characters that would break a mail header', () => {
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const withNewline = `bild${String.fromCharCode(13)}${String.fromCharCode(10)}.png`
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expect(sanitizeAttachmentFilename(withNewline)).toBe('bild.png')
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})
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it('falls back when nothing usable is left', () => {
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expect(sanitizeAttachmentFilename('')).toBe('bilaga')
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expect(sanitizeAttachmentFilename(null)).toBe('bilaga')
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expect(sanitizeAttachmentFilename(String.fromCharCode(0))).toBe('bilaga')
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})
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it('bounds a very long name but keeps the extension', () => {
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const long = `${'a'.repeat(300)}.png`
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const result = sanitizeAttachmentFilename(long)
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expect(result.length).toBeLessThanOrEqual(100)
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expect(result.endsWith('.png')).toBe(true)
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})
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})
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describe('supportAttachmentFilename', () => {
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it('forces the extension to agree with the verified MIME type', () => {
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expect(supportAttachmentFilename('update.exe', 'application/pdf')).toBe('update.pdf')
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expect(supportAttachmentFilename('photo.png', 'image/jpeg')).toBe('photo.jpg')
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})
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it('keeps the final filename within the mail-header bound', () => {
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const filename = supportAttachmentFilename('a'.repeat(150), 'application/pdf')
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expect(filename.length).toBeLessThanOrEqual(100)
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})
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})
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it('does not expose attachment names in session-replay attributes', () => {
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const source = readFileSync(
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join(process.cwd(), 'components', 'ui', 'support-link.tsx'),
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'utf8'
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)
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expect(source).toContain('ph-no-capture')
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expect(source).not.toContain('title={file.name}')
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})
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})
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