fix: serve local icons from Docker volume mounts

src/server/routes/icons/[...path].ts

@@ -0,0 +1,67 @@
+import { createReadStream, promises as fs } from 'node:fs'
+import { extname, join, normalize } from 'node:path'
+import { sendStream, setHeader } from 'h3'
+import { useLogger } from '~/server/utils/logger'
+
+const MIME_TYPES: Record<string, string> = {
+  '.svg': 'image/svg+xml',
+  '.png': 'image/png',
+  '.jpg': 'image/jpeg',
+  '.jpeg': 'image/jpeg',
+  '.ico': 'image/x-icon',
+  '.webp': 'image/webp',
+  '.gif': 'image/gif',
+}
+
+const CACHE_MAX_AGE = 86400
+
+const logger = useLogger('icons')
+
+export default defineEventHandler(async (event) => {
+  const iconsBaseDir = join(process.cwd(), 'public', 'icons')
+  const pathSegments = event.context.params?.path
+
+  if (!pathSegments) {
+    throw createError({ statusCode: 400, statusMessage: 'Icon path required' })
+  }
+
+  const requestedPath = Array.isArray(pathSegments)
+    ? pathSegments.join('/')
+    : pathSegments
+
+  const decodedPath = decodeURIComponent(requestedPath)
+  if (decodedPath.includes('..') || decodedPath.includes('\0')) {
+    logger.warn('Rejected invalid path:', requestedPath)
+    throw createError({ statusCode: 400, statusMessage: 'Invalid path' })
+  }
+
+  const fullPath = join(iconsBaseDir, normalize(decodedPath))
+
+  if (!fullPath.startsWith(iconsBaseDir + '/')) {
+    throw createError({ statusCode: 400, statusMessage: 'Invalid path' })
+  }
+
+  const ext = extname(fullPath).toLowerCase()
+  const mimeType = MIME_TYPES[ext]
+  if (!mimeType) {
+    throw createError({ statusCode: 404, statusMessage: 'Unsupported file type' })
+  }
+
+  try {
+    const stats = await fs.stat(fullPath)
+    if (!stats.isFile()) {
+      throw createError({ statusCode: 404, statusMessage: 'Icon not found' })
+    }
+  } catch (e) {
+    if ((e as NodeJS.ErrnoException).code === 'ENOENT') {
+      throw createError({ statusCode: 404, statusMessage: 'Icon not found' })
+    }
+    logger.error(e)
+    throw createError({ statusCode: 500, statusMessage: 'Internal error' })
+  }
+
+  setHeader(event, 'Content-Type', mimeType)
+  setHeader(event, 'Cache-Control', `public, max-age=${CACHE_MAX_AGE}`)
+
+  return sendStream(event, createReadStream(fullPath))
+})