fix: cors issues on clients - fixes #1046

packages/api-gateway/bin/server.ts

@@ -83,7 +83,41 @@ void container.load().then((container) => {
         type: ['text/plain', 'application/x-www-form-urlencoded', 'application/x-www-form-urlencoded; charset=utf-8'],
       }),
     )
-    app.use(cors())
+    const corsAllowedOrigins = env.get('CORS_ALLOWED_ORIGINS', true)
+      ? env.get('CORS_ALLOWED_ORIGINS', true).split(',')
+      : []
+    app.use(
+      cors({
+        credentials: true,
+        exposedHeaders: ['x-captcha-required'],
+        origin: (requestOrigin: string | undefined, callback: (err: Error | null, origin?: string[]) => void) => {
+          const requstOriginIsNotFilled = !requestOrigin || requestOrigin === 'null'
+          const requestOriginatesFromTheDesktopApp = requestOrigin?.startsWith('file://')
+          const requestOriginatesFromClipperForFirefox = requestOrigin?.startsWith('moz-extension://')
+          const requestOriginatesFromSelfHostedAppOnHttpPort = requestOrigin === 'http://localhost'
+          const requestOriginatesFromSelfHostedAppOnCustomPort = requestOrigin?.match(/http:\/\/localhost:\d+/) !== null
+          const requestOriginatesFromSelfHostedApp =
+            requestOriginatesFromSelfHostedAppOnHttpPort || requestOriginatesFromSelfHostedAppOnCustomPort
+
+          const requestIsWhitelisted =
+            corsAllowedOrigins.length === 0 ||
+            requstOriginIsNotFilled ||
+            requestOriginatesFromTheDesktopApp ||
+            requestOriginatesFromClipperForFirefox ||
+            requestOriginatesFromSelfHostedApp
+
+          if (requestIsWhitelisted) {
+            callback(null, [requestOrigin as string])
+          } else {
+            if (corsAllowedOrigins.includes(requestOrigin)) {
+              callback(null, [requestOrigin])
+            } else {
+              callback(new Error('Not allowed by CORS', { cause: 'origin not allowed' }))
+            }
+          }
+        },
+      }),
+    )
     app.use(
       robots({
         UserAgent: '*',

packages/files/bin/server.ts

@@ -65,9 +65,45 @@ void container.load().then((container) => {
     app.use(json({ limit: requestPayloadLimit }))
     app.use(raw({ limit: requestPayloadLimit, type: 'application/octet-stream' }))
     app.use(urlencoded({ extended: true, limit: requestPayloadLimit }))
+
+    const corsAllowedOrigins = env.get('CORS_ALLOWED_ORIGINS', true)
+      ? env.get('CORS_ALLOWED_ORIGINS', true).split(',')
+      : []
     app.use(
       cors({
-        exposedHeaders: ['Content-Range', 'Accept-Ranges'],
+        credentials: true,
+        exposedHeaders: [
+          'Content-Range',
+          'Accept-Ranges',
+          'Access-Control-Allow-Credentials',
+          'Access-Control-Allow-Origin',
+        ],
+        origin: (requestOrigin: string | undefined, callback: (err: Error | null, origin?: string[]) => void) => {
+          const requstOriginIsNotFilled = !requestOrigin || requestOrigin === 'null'
+          const requestOriginatesFromTheDesktopApp = requestOrigin?.startsWith('file://')
+          const requestOriginatesFromClipperForFirefox = requestOrigin?.startsWith('moz-extension://')
+          const requestOriginatesFromSelfHostedAppOnHttpPort = requestOrigin === 'http://localhost'
+          const requestOriginatesFromSelfHostedAppOnCustomPort = requestOrigin?.match(/http:\/\/localhost:\d+/) !== null
+          const requestOriginatesFromSelfHostedApp =
+            requestOriginatesFromSelfHostedAppOnHttpPort || requestOriginatesFromSelfHostedAppOnCustomPort
+
+          const requestIsWhitelisted =
+            corsAllowedOrigins.length === 0 ||
+            requstOriginIsNotFilled ||
+            requestOriginatesFromTheDesktopApp ||
+            requestOriginatesFromClipperForFirefox ||
+            requestOriginatesFromSelfHostedApp
+
+          if (requestIsWhitelisted) {
+            callback(null, [requestOrigin as string])
+          } else {
+            if (corsAllowedOrigins.includes(requestOrigin)) {
+              callback(null, [requestOrigin])
+            } else {
+              callback(new Error('Not allowed by CORS', { cause: 'origin not allowed' }))
+            }
+          }
+        },
       }),
     )
     app.use(

packages/home-server/src/Server/HomeServer.ts

@@ -129,9 +129,40 @@ export class HomeServer implements HomeServerInterface {
             ],
           }),
         )
+        const corsAllowedOrigins = env.get('CORS_ALLOWED_ORIGINS', true)
+          ? env.get('CORS_ALLOWED_ORIGINS', true).split(',')
+          : []
         app.use(
           cors({
-            exposedHeaders: ['Content-Range', 'Accept-Ranges'],
+            credentials: true,
+            exposedHeaders: ['Content-Range', 'Accept-Ranges', 'x-captcha-required'],
+            origin: (requestOrigin: string | undefined, callback: (err: Error | null, origin?: string[]) => void) => {
+              const requstOriginIsNotFilled = !requestOrigin || requestOrigin === 'null'
+              const requestOriginatesFromTheDesktopApp = requestOrigin?.startsWith('file://')
+              const requestOriginatesFromClipperForFirefox = requestOrigin?.startsWith('moz-extension://')
+              const requestOriginatesFromSelfHostedAppOnHttpPort = requestOrigin === 'http://localhost'
+              const requestOriginatesFromSelfHostedAppOnCustomPort =
+                requestOrigin?.match(/http:\/\/localhost:\d+/) !== null
+              const requestOriginatesFromSelfHostedApp =
+                requestOriginatesFromSelfHostedAppOnHttpPort || requestOriginatesFromSelfHostedAppOnCustomPort
+
+              const requestIsWhitelisted =
+                corsAllowedOrigins.length === 0 ||
+                requstOriginIsNotFilled ||
+                requestOriginatesFromTheDesktopApp ||
+                requestOriginatesFromClipperForFirefox ||
+                requestOriginatesFromSelfHostedApp
+
+              if (requestIsWhitelisted) {
+                callback(null, [requestOrigin as string])
+              } else {
+                if (corsAllowedOrigins.includes(requestOrigin)) {
+                  callback(null, [requestOrigin])
+                } else {
+                  callback(new Error('Not allowed by CORS', { cause: 'origin not allowed' }))
+                }
+              }
+            },
           }),
         )
         app.use(