Requires support for anonymous login

[melchior-voidwolf]

I've tried empty username and password or or using anonymous and it doesn't work.

[amosavian]

If you want to connect anonymously, you may pass credential in initializer equal to nil, the default guest user will be passed to server.

If you are trying to connect Windows, please ensure guest user is active in group policy.

[melchior-voidwolf]

not work, and i get some error my server is a QNAP NAS, and i can login with guest in my mac

[amosavian]

Please ensure guest user is already enabled and set up on your NAS. As I checked, it is disabled by default.

https://www.qnap.com/en/how-to/faq/article/how-to-set-up-guest-access-to-share-folders

[melchior-voidwolf]

I've confirmed that guest login is enabled, but it still doesn't work. But thank you very much for your work!

If there are any follow-ups, I'll synchronise them here.

[Nofe92]

Hi @amosavian,
I also tested the guest login but I also get STATUS_ACCESS_DENIED. The share works correctly with other clients.
On the Samba server (smbd version 4.19.5) the logs show Bad SMB2 (sign_algo_id=1) signature for message.

I only had a quick Look at libsmb2 internals but all I could find is that on session_setup_cb the header flag SMB2_FLAGS_SIGNED is not set so any signature is skipped. Not sure if signature is required always.

It works with every other client I tested with (iOS files app and MacOS).

[wdlawman]

Hi @amosavian,

It looks like when password is an empty string, smb2_set_password(context, "") passes a pointer to an empty C string. However, libsmb2's NTLM implementation in ntlmssp.c only triggers anonymous/guest authentication when password == NULL (null pointer), not when it's an empty string.

I made the following edit in Context.swift and guest auth works now, simply passing nil instead of "".

[amosavian]

Hi, please check latest commit using SPM's branch instead of tag. If this commit resolves the issue, I will publish it as new version
@wdlawman

[wdlawman]

It worked perfectly. Thanks!!!
@amosavian

[ktech0]

Same issue
let credential = URLCredential(user: "guest", password: "", persistence: .forSession) unable to connect share, error code 1.
SMB2Manager credential parameter passing nil is also the same error code.

But I have determined that the share directory can be connected with guest and empty password.
Switching to the globally set username and password is fine.