Failed to get VAPID

birnbeidla · July 27, 2021, 1:16pm

Hi.

I followed the walkthrough to setup habot behind myopenhab.org.
As soon as I test notifications, I get “Error while getting the public VAPID key from the server: Error: Request failed with status code 500”

A little debugging shows the result of the call to https://home.myopenhab.org/rest/habot/notifications/vapid

“{“error”:{“message”:“Cannot get the VAPID keypair for push notifications”,“http-code”:500,“exception”:{“class”:“java.lang.RuntimeException”,“message”:“Cannot get the VAPID keypair for push notifications”,“localized-message”:“Cannot get the VAPID keypair for push notifications”,“cause”:“java.nio.file.NoSuchFileException”}}}”

Can anyone give me some advice here?

exception in logs:
2021-07-27 15:15:33.512 [ERROR] [internal.JSONResponseExceptionMapper] - Unexpected exception occurred while processing REST request.

java.lang.RuntimeException: Cannot get the VAPID keypair for push notifications

at org.openhab.ui.habot.notification.internal.NotificationService.loadVAPIDKeys(NotificationService.java:196) ~[?:?]

at org.openhab.ui.habot.notification.internal.NotificationService.getVAPIDPublicKey(NotificationService.java:87) ~[?:?]

at org.openhab.ui.habot.rest.internal.HABotResource.webPushConfig(HABotResource.java:209) ~[?:?]

at jdk.internal.reflect.GeneratedMethodAccessor403.invoke(Unknown Source) ~[?:?]

birnbeidla · July 27, 2021, 1:21pm

caused by exception:




Caused by: java.nio.file.NoSuchFileException: /var/lib/openhab/habot/vapid_keys

	at sun.nio.fs.UnixException.translateToIOException(UnixException.java:92) ~[?:?]

	at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111) ~[?:?]

	at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:116) ~[?:?]

	at sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:219) ~[?:?]

	at java.nio.file.spi.FileSystemProvider.newOutputStream(FileSystemProvider.java:478) ~[?:?]

	at java.nio.file.Files.newOutputStream(Files.java:220) ~[?:?]

	at java.nio.file.Files.write(Files.java:3425) ~[?:?]

	at java.nio.file.Files.writeString(Files.java:3641) ~[?:?]

	at java.nio.file.Files.writeString(Files.java:3581) ~[?:?]

Should that file be generated somehow?

birnbeidla · July 28, 2021, 6:53am

Managed to solve it by manually generating the file with values from an online key generator.
It remains unsolved why the generation mechanism didn’t work here…

ysc · August 2, 2021, 4:03pm

This should happen, I traced it down to a regression introduced by

On this line:

github.com

openhab/openhab-webui/blob/36658f571e67cda3e9ccbc74fb3e1755a2e9f39a/bundles/org.openhab.ui.habot/src/main/java/org/openhab/ui/habot/notification/internal/NotificationService.java#L177

    
      
              KeyPair keyPair = keyPairGenerator.generateKeyPair();
              byte[] publicKey = Utils.savePublicKey((ECPublicKey) keyPair.getPublic());
              byte[] privateKey = Utils.savePrivateKey((ECPrivateKey) keyPair.getPrivate());
          
          
    List<String> encodedKeys = List.of(BaseEncoding.base64Url().encode(publicKey),
                      BaseEncoding.base64Url().encode(privateKey));
          
          
    // write the public key, then the private key in encoded form on separate lines in the file
              Files.createDirectories(VAPID_KEYS_PATH.getParent());
              String lines = encodedKeys.stream().collect(Collectors.joining(System.lineSeparator()));
              Files.writeString(VAPID_KEYS_PATH, lines, StandardOpenOption.TRUNCATE_EXISTING);
          
          
    publicVAPIDKey = encodedKeys.get(0);
              privateVAPIDKey = encodedKeys.get(1);
          }
          
          
/**
           * Loads the VAPID keypair from the file, or generate them if they don't exist.
           */
          private void loadVAPIDKeys() {
              try {

The open option should be CREATE or CREATE_NEW (or in addition to TRUNCATE_EXISTING).

birnbeidla · August 3, 2021, 12:52pm

OK, that makes sense.
I’ll be happy to test it in a further release - in the mean time, I think I can work well with the workaround.

Did you by any chance have a look at my other post too?
Send notifications via jython script - Apps & Services / HABot - openHAB Community

stamate_viorel · February 8, 2022, 10:27pm

Hello
Just testing the notifications as well but they the same error but cannot find how to generate a new vapid_keys file. Thanks in advance

and22 · November 11, 2022, 10:32am

Hello Berni, how did you do that with the vapid_key file? What does the file have to look like?
Thanks