[Bug 2092836] Re: smbget adds a space to the server name, fails to get

[Lukas Märdian]

Hi, thanks for investigating this issue!

Indeed, it seems to be unrelated to samba and is an systemd[-resolved]
issue.

Your /etc/resolv.conf looks odd, did you manually modify that file, or
install the "resolvconf" package to have it handle this file for you?
Both cases do not reflect the default, supported DNS setup for Ubuntu.

The "resolvectl" command (which used to be named "systemd-resolve" in
the past), shows an interesting tidbit:

[...]
resolv.conf mode: foreign
[...]

This means it's not using the "stub" mode, recommended in Ubuntu. Can
you please try the following steps to re-create the default DNS setup?
/etc/resolv.conf should be a symlink to /run/systemd/resolve/stub-
resolv.conf


$ sudo cp /etc/resolv.conf /etc/resolv.conf.BACKUP
$ sudo ln -sf /run/systemd/resolve/stub-resolv.conf /etc/resolv.conf
$ ls -la /etc/resolv.conf

Maybe re-start your system (or the samba service), to get a clean state.

You can also peak at the contents of /run/systemd/resolve/stub-
resolv.conf to see if systemd-resolved would set a correct "search"
domain in this case.

** Also affects: systemd (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: samba (Ubuntu)
       Status: New => Invalid

** Changed in: systemd (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/2092836

Title:
  smbget adds a space to the server name, fails to get

Status in samba package in Ubuntu:
  Invalid
Status in systemd package in Ubuntu:
  Incomplete

Bug description:
  This worked in Ubuntu 20.04. It fails after upgrading to Ubuntu 22.04.

  /usr/bin/smbget -n -a -O "smb://humax/Recordings/The Girl In The
  Spider's Web (2018)_20241228_2200.ts"

  I added -v and -d8 flags to get this.

  ```
  link at woody:~> /usr/bin/smbget -v -d8 -n -a -O "smb://humax/Recordings/The Girl In The Spider's Web (2018)_20241228_2200.ts"
  INFO: Current debug levels:
    all: 8
    tdb: 8
    printdrivers: 8
    lanman: 8
    smb: 8
    rpc_parse: 8
    rpc_srv: 8
    rpc_cli: 8
    passdb: 8
    sam: 8
    auth: 8
    winbind: 8
    vfs: 8
    idmap: 8
    quota: 8
    acls: 8
    locking: 8
    msdfs: 8
    dmapi: 8
    registry: 8
    scavenger: 8
    dns: 8
    ldb: 8
    tevent: 8
    auth_audit: 8
    auth_json_audit: 8
    kerberos: 8
    drs_repl: 8
    smb2: 8
    smb2_credits: 8
    dsdb_audit: 8
    dsdb_json_audit: 8
    dsdb_password_audit: 8
    dsdb_password_json_audit: 8
    dsdb_transaction_audit: 8
    dsdb_transaction_json_audit: 8
    dsdb_group_audit: 8
    dsdb_group_json_audit: 8
  Using netbios name WOODY.
  Using workgroup WORKGROUP.
  Using workgroup WORKGROUP, guest user
  SMBC_server: server_n=[humax] server=[humax]
   -> server_n=[humax] server=[humax]
  Opening cache file at /run/samba/gencache.tdb
  tdb(/run/samba/gencache.tdb): tdb_open_ex: could not open file /run/samba/gencache.tdb: Permission denied
  gencache_init: Opening user cache file /home/link/.cache/samba/gencache.tdb.
  sitename_fetch: No stored sitename for realm ''
  namecache_fetch: no entry for humax#20 found.
  resolve_lmhosts: Attempting lmhosts lookup for name humax<0x20>
  startlmhosts: Can't open lmhosts file /etc/samba/lmhosts. Error was No such file or directory
  resolve_wins: WINS server resolution selected and no WINS servers listed.
  resolve_hosts: Attempting host lookup for name humax<0x20>
  resolve_hosts: getaddrinfo failed for name humax [Temporary failure in name resolution]
  name_resolve_bcast: Attempting broadcast lookup for name humax<0x20>
  smbc_open: Invalid argument
  ```

  There is a random space (ASCII 0x20) in the hostname? "humax " instead
  of "humax". Of course it's not going to work!

  This problem also persists in Ubuntu 24.04.

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: smbclient 2:4.15.13+dfsg-0ubuntu1.6
  ProcVersionSignature: Ubuntu 5.15.0-130.140-generic 5.15.168
  Uname: Linux 5.15.0-130-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.11-0ubuntu82.6
  Architecture: amd64
  CasperMD5CheckResult: unknown
  Date: Thu Jan  2 14:09:32 2025
  InstallationDate: Installed on 2015-12-31 (3289 days ago)
  InstallationMedia: Ubuntu-Server 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  SambaClientRegression: Yes
  SourcePackage: samba
  UpgradeStatus: Upgraded to jammy on 2025-01-02 (0 days ago)

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