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stiela

Partages Samba / Nautilus – Ne pas demander de mot de passe

Bonjour.

Ayant récemment emménagé, j'aimerais pouvoir partager des fichiers avec mes colocataires qui sont sous Mac et Windows.
Je suis moi-même sous Ubuntu 16.04.1 LTS, la mise à jour ayant récemment été proposée depuis Ubuntu 12.04 LTS sous lequel mon portable fonctionnait auparavant.

À cet effet, j'ai choisi d'utiliser Samba et de passer sur mon poste par Nautilus pour créer des partages (via clic droit sur un dossier > partage de réseau local, selon la doc : https://doc.ubuntu-fr.org/samba#partage … _personnel – cf la fenêtre à gauche sur la capture d'écran). J'ai donc partagé le principal dossier que je veux mettre à disposition de mes colocataires, c'est-à-dire ma bibliothèque musicale.
Pour tester si cela fonctionne bien, j'essaye d'accéder à mon propre partage (en allant avec Nautilus sur smb://192.168.0.10, ou encore en cliquant sur le raccourci Réseau, etc). Le dossier "Musique" apparaît bien dans la liste des partages de mon poste, mais quand je clique dessus une fenêtre apparaît me demandant de m'identifier (cf la fenêtre à droite sur la capture d'écran).

Capture d'écran : http://i64.tinypic.com/2s7ugat.png

Si je clique sur "Se connecter" en anonyme, ça fonctionne très bien. Mais je voudrais que le dossier se charge dès que l'on clique dessus, sans demander de mot de passe ni même proposer d'utiliser un compte utilisateur pour se connecter. Je suis sûr que j'avais réussi à faire ça il y a plusieurs années (vers 2007, entre Ubuntu et des postes Windows sur mon réseau local familial), maintenant, est-ce que c'est encore possible...

Je crois qu'à l'époque j'avais eu un souci similaire à cause d'un problème de groupe attribué au dossier partagé. Est-ce que ce serait le problème ? J'ai changé le "group" de mon dossier musical "Bibliothèque" vers "sambashare", mais ça n'a pas plus fonctionné... Voici un thread de quelqu'un qui a eu et résolu le problème selon cet angle, il y a peut être des infos utiles :
http://serverfault.com/questions/630631 … r-password

Et celui-ci aussi, bien qu'assez vieux (2006 !) : http://www.commentcamarche.net/forum/af … t-de-passe

Voici le contenu des fichiers de configuration samba :

Mon usershare créé avec Nautilus

~$ net usershare info
[Musique]
path=/home/user/Musique/Bibliothèque
comment=Genre - Artiste / Année - Album
usershare_acl=Everyone:R,Unix User\user:F,
guest_ok=y

~$ cat /var/lib/samba/usershares/musique 
#VERSION 2
path=/home/user/Musique/Bibliothèque
comment=Genre - Artiste / Année - Album
usershare_acl=S-1-1-0:R,S-1-22-1-1000:F
guest_ok=y
sharename=Musique

Ce qui m'étonne beaucoup, c'est la ligne "usershare_acl"... À l'époque ou j'avais réussi à partager mes dossiers comme je voulais, je crois qu'il n'y avait qu'une spécification (Everyone:R), sans référence à mon compte utilisateur. J'ai essayé d'enlever cette deuxième spécification, même résultat...

Plus d'infos sur ce paramètre : http://serverfault.com/questions/474830 … rks#474831

Et enfin, deux extraits de man smb.conf sur des paramètres qui sont peut-être ceux qu'il faut configurer, ainsi que mon fichier smb.conf, que je n'ai pas modifié si je me souviens bien.
Avant je crois que la ligne "security = share" pouvait servir à régler mon problème, mais maintenant on ne peut plus paramétrer ainsi...

security (G)
This option affects how clients respond to Samba and is one of the most important settings in the smb.conf file.
The default is security = user, as this is the most common setting, used for a standalone file server or a DC.
The alternatives are security = ads or security = domain, which support joining Samba to a Windows domain
You should use security = user and map to guest if you want to mainly setup shares without a password (guest shares). This is commonly used for a shared printer server.


map to guest (G)

           This parameter can take four different values, which tell smbd(8) what to do with user login requests that don't match a valid UNIX
           user in some way.

           The four settings are :

           ·   Never - Means user login requests with an invalid password are rejected. This is the default.

           ·   Bad User - Means user logins with an invalid password are rejected, unless the username does not exist, in which case it is treated
               as a guest login and mapped into the guest account.

           ·   Bad Password - Means user logins with an invalid password are treated as a guest login and mapped into the guest account. Note that
               this can cause problems as it means that any user incorrectly typing their password will be silently logged on as "guest" - and
               will not know the reason they cannot access files they think they should - there will have been no message given to them that they
               got their password wrong. Helpdesk services will hate you if you set the map to guest parameter this way :-).

           ·   Bad Uid - Is only applicable when Samba is configured in some type of domain mode security (security = {domain|ads}) and means that
               user logins which are successfully authenticated but which have no valid Unix user account (and smbd is unable to create one)
               should be mapped to the defined guest account. This was the default behavior of Samba 2.x releases. Note that if a member server is
               running winbindd, this option should never be required because the nss_winbind library will export the Windows domain users and
               groups to the underlying OS via the Name Service Switch interface.

       Note that this parameter is needed to set up "Guest" share services. This is because in these modes the name of the resource being
       requested is not sent to the server until after the server has successfully authenticated the client so the server cannot make
       authentication decisions at the correct time (connection to the share) for "Guest" shares.

~$ cat /etc/samba/smb.conf
#
# Sample configuration file for the Samba suite for Debian GNU/Linux.
#
#
# This is the main Samba configuration file. You should read the
# smb.conf(5) manual page in order to understand the options listed
# here. Samba has a huge number of configurable options most of which 
# are not shown in this example
#
# Some options that are often worth tuning have been included as
# commented-out examples in this file.
#  - When such options are commented with ";", the proposed setting
#    differs from the default Samba behaviour
#  - When commented with "#", the proposed setting is the default
#    behaviour of Samba but the option is considered important
#    enough to be mentioned here
#
# NOTE: Whenever you modify this file you should run the command
# "testparm" to check that you have not made any basic syntactic 
# errors. 

#======================= Global Settings =======================

[global]

## Browsing/Identification ###

# Change this to the workgroup/NT-domain name your Samba server will part of
   workgroup = WORKGROUP

# server string is the equivalent of the NT Description field
	server string = %h server (Samba, Ubuntu)

# Windows Internet Name Serving Support Section:
# WINS Support - Tells the NMBD component of Samba to enable its WINS Server
#   wins support = no

# WINS Server - Tells the NMBD components of Samba to be a WINS Client
# Note: Samba can be either a WINS Server, or a WINS Client, but NOT both
;   wins server = w.x.y.z

# This will prevent nmbd to search for NetBIOS names through DNS.
   dns proxy = no

#### Networking ####

# The specific set of interfaces / networks to bind to
# This can be either the interface name or an IP address/netmask;
# interface names are normally preferred
;   interfaces = 127.0.0.0/8 eth0

# Only bind to the named interfaces and/or networks; you must use the
# 'interfaces' option above to use this.
# It is recommended that you enable this feature if your Samba machine is
# not protected by a firewall or is a firewall itself.  However, this
# option cannot handle dynamic or non-broadcast interfaces correctly.
;   bind interfaces only = yes



#### Debugging/Accounting ####

# This tells Samba to use a separate log file for each machine
# that connects
   log file = /var/log/samba/log.%m

# Cap the size of the individual log files (in KiB).
   max log size = 1000

# If you want Samba to only log through syslog then set the following
# parameter to 'yes'.
#   syslog only = no

# We want Samba to log a minimum amount of information to syslog. Everything
# should go to /var/log/samba/log.{smbd,nmbd} instead. If you want to log
# through syslog you should set the following parameter to something higher.
   syslog = 0

# Do something sensible when Samba crashes: mail the admin a backtrace
   panic action = /usr/share/samba/panic-action %d


####### Authentication #######

# Server role. Defines in which mode Samba will operate. Possible
# values are "standalone server", "member server", "classic primary
# domain controller", "classic backup domain controller", "active
# directory domain controller". 
#
# Most people will want "standalone sever" or "member server".
# Running as "active directory domain controller" will require first
# running "samba-tool domain provision" to wipe databases and create a
# new domain.
   server role = standalone server

# If you are using encrypted passwords, Samba will need to know what
# password database type you are using.  
   passdb backend = tdbsam

   obey pam restrictions = yes

# This boolean parameter controls whether Samba attempts to sync the Unix
# password with the SMB password when the encrypted SMB password in the
# passdb is changed.
   unix password sync = yes

# For Unix password sync to work on a Debian GNU/Linux system, the following
# parameters must be set (thanks to Ian Kahan <<kahan@informatik.tu-muenchen.de> for
# sending the correct chat script for the passwd program in Debian Sarge).
   passwd program = /usr/bin/passwd %u
   passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .

# This boolean controls whether PAM will be used for password changes
# when requested by an SMB client instead of the program listed in
# 'passwd program'. The default is 'no'.
   pam password change = yes

# This option controls how unsuccessful authentication attempts are mapped
# to anonymous connections
   map to guest = bad user

########## Domains ###########

#
# The following settings only takes effect if 'server role = primary
# classic domain controller', 'server role = backup domain controller'
# or 'domain logons' is set 
#

# It specifies the location of the user's
# profile directory from the client point of view) The following
# required a [profiles] share to be setup on the samba server (see
# below)
;   logon path = \\%N\profiles\%U
# Another common choice is storing the profile in the user's home directory
# (this is Samba's default)
#   logon path = \\%N\%U\profile

# The following setting only takes effect if 'domain logons' is set
# It specifies the location of a user's home directory (from the client
# point of view)
;   logon drive = H:
#   logon home = \\%N\%U

# The following setting only takes effect if 'domain logons' is set
# It specifies the script to run during logon. The script must be stored
# in the [netlogon] share
# NOTE: Must be store in 'DOS' file format convention
;   logon script = logon.cmd

# This allows Unix users to be created on the domain controller via the SAMR
# RPC pipe.  The example command creates a user account with a disabled Unix
# password; please adapt to your needs
; add user script = /usr/sbin/adduser --quiet --disabled-password --gecos "" %u

# This allows machine accounts to be created on the domain controller via the 
# SAMR RPC pipe.  
# The following assumes a "machines" group exists on the system
; add machine script  = /usr/sbin/useradd -g machines -c "%u machine account" -d /var/lib/samba -s /bin/false %u

# This allows Unix groups to be created on the domain controller via the SAMR
# RPC pipe.  
; add group script = /usr/sbin/addgroup --force-badname %g

############ Misc ############

# Using the following line enables you to customise your configuration
# on a per machine basis. The %m gets replaced with the netbios name
# of the machine that is connecting
;   include = /home/samba/etc/smb.conf.%m

# Some defaults for winbind (make sure you're not using the ranges
# for something else.)
;   idmap uid = 10000-20000
;   idmap gid = 10000-20000
;   template shell = /bin/bash

# Setup usershare options to enable non-root users to share folders
# with the net usershare command.

# Maximum number of usershare. 0 (default) means that usershare is disabled.
;   usershare max shares = 100

# Allow users who've been granted usershare privileges to create
# public shares, not just authenticated ones
   usershare allow guests = yes

#======================= Share Definitions =======================

# Un-comment the following (and tweak the other settings below to suit)
# to enable the default home directory shares. This will share each
# user's home directory as \\server\username
;[homes]
;   comment = Home Directories
;   browseable = no

# By default, the home directories are exported read-only. Change the
# next parameter to 'no' if you want to be able to write to them.
;   read only = yes

# File creation mask is set to 0700 for security reasons. If you want to
# create files with group=rw permissions, set next parameter to 0775.
;   create mask = 0700

# Directory creation mask is set to 0700 for security reasons. If you want to
# create dirs. with group=rw permissions, set next parameter to 0775.
;   directory mask = 0700

# By default, \\server\username shares can be connected to by anyone
# with access to the samba server.
# Un-comment the following parameter to make sure that only "username"
# can connect to \\server\username
# This might need tweaking when using external authentication schemes
;   valid users = %S

# Un-comment the following and create the netlogon directory for Domain Logons
# (you need to configure Samba to act as a domain controller too.)
;[netlogon]
;   comment = Network Logon Service
;   path = /home/samba/netlogon
;   guest ok = yes
;   read only = yes

# Un-comment the following and create the profiles directory to store
# users profiles (see the "logon path" option above)
# (you need to configure Samba to act as a domain controller too.)
# The path below should be writable by all users so that their
# profile directory may be created the first time they log on
;[profiles]
;   comment = Users profiles
;   path = /home/samba/profiles
;   guest ok = no
;   browseable = no
;   create mask = 0600
;   directory mask = 0700

[printers]
   comment = All Printers
   browseable = no
   path = /var/spool/samba
   printable = yes
   guest ok = no
   read only = yes
   create mask = 0700

# Windows clients look for this share name as a source of downloadable
# printer drivers
[print$]
   comment = Printer Drivers
   path = /var/lib/samba/printers
   browseable = yes
   read only = yes
   guest ok = no
# Uncomment to allow remote administration of Windows print drivers.
# You may need to replace 'lpadmin' with the name of the group your
# admin users are members of.
# Please note that you also need to set appropriate Unix permissions
# to the drivers directory for these users to have write rights in it
;   write list = root, @lpadmin

Sauriez-vous comment faire pour que le serveur prenne automatiquement la connexion anonyme et ne demande pas de mot de passe ? Merci !

Modération : prière de ne pas insérer dans les messages des images d'une taille trop élevée. Vous pouvez utiliser des hébergements d'images, tel  Pix-toile libre. Merci.

Dernière modification par stiela (Le 08/02/2019, à 08:34)

stiela

Re : Partages Samba / Nautilus – Ne pas demander de mot de passe

En cherchant un éventuel remplacement pour "security = share", je suis tombé là-dessus : https://ubuntuforums.org/showthread.php?t=1962617

J'ai donc essayé d'ajouter les lignes suivantes à mon smb.conf :

security = user
map to guest = Bad User #(cette ligne était déjà présente dans le fichier de base)
force user = nobody

Après avoir redémarré samba (sudo service smbd restart), toujours rien n'a changé...

Coeur Noir

Re : Partages Samba / Nautilus – Ne pas demander de mot de passe

( pas le temps de rester, mais idée en passant puisqu'il s'agit uniquement du dossier musique : partage DAAP soit via rhythmbox soit « autonome » avec Tangerine )

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stiela

Re : Partages Samba / Nautilus – Ne pas demander de mot de passe

Bonjour, ah en effet c'est peut-être une solution pour le dossier Musique, merci ! D'autres dossiers s'ajouteront par la suite toutefois (vidéos et aussi fichiers PDF et documents).

Dernière modification par stiela (Le 16/09/2016, à 17:17)

stiela

Re : Partages Samba / Nautilus – Ne pas demander de mot de passe

... aucune idée ?