Como administrar remotamente Cups pela interface web ?

madtrek · 10 de Novembro de 2005, 13:26

Boa Tarde a todos ...
Tenho um problema a resolver com o UbuntuServer e Cups .
Insralei o recem liberado UbuntuServer em uma máquina q será um servidor de impressão, esta instalação é "pelada" , sem nada a não ser o estritamente necessário, pto NÃO tem nenhuma interface gráfica, e nem vai ter ...
Preciso instalar e configurar diversas impressoras neste servidor, sempre fiz isso pela interface web q o cups disponibiliza exatamente p/esta função .
Porém, o Ubuntu de alguma forma "trava" esta interface, e eu não conseguí descobrir como passar por cima disto .
Já editei o /etc/cups/cupsd.conf p/permitir q máquinas se conectem remotamente nele, abrí apenas p/a rede local ( Allow From 192.168.0.0/24 ) porém, qdo entro na interface, p/administrar alguma coisa ele pede um nome de usuário/senha válido e q faça parde do grupo "lpadmin" p/q este usuário possa entrar nas funções administrativas desta interface web, eu já fiz tanto o root qto o usuário inicial membros deste grupo, e também já atrbuí uma senha válida ao root, mas nenhum dos dois, nem o root e nem o usuário inicial são aceitos na hora de autenticar no cups/web !
Como faço com que isto funcione ?
Repetindo, eu NÃO tenho nenhuma interface gráfica instalada neste servidor, e NÃO vou colocar uma só p/configurar impressoras !!
Qdo estiver tudo OK esta máquina não vai ter nem teclado nem mouse e nem monitor, ela SÓ vai ser administrada remotamente !!

AlexBR · 10 de Novembro de 2005, 21:21

Cara, tô te dando o meu cups.conf. Do jeito que está, eu consigo acessar o cups via web localmente.

#
#
# Sample configuration file for the Common UNIX Printing System (CUPS)
# scheduler.
#
# Copyright 1997-2005 by Easy Software Products, all rights reserved.
#
# These coded instructions, statements, and computer programs are the
# property of Easy Software Products and are protected by Federal
# copyright law. Distribution and use rights are outlined in the file
# "LICENSE.txt" which should have been included with this file. If this
# file is missing or damaged please contact Easy Software Products
# at:
#
# Attn: CUPS Licensing Information
# Easy Software Products
# 44141 Airport View Drive, Suite 204
# Hollywood, Maryland 20636 USA
#
# Voice: (301) 373-9600
# EMail: cups-info@cups.org
# WWW: http://www.cups.org
#

########################################################################
# #
# This is the CUPS configuration file. If you are familiar with #
# Apache or any of the other popular web servers, we've followed the #
# same format. Any configuration variable used here has the same #
# semantics as the corresponding variable in Apache. If we need #
# different functionality then a different name is used to avoid #
# confusion... #
# #
########################################################################

########
######## Server Identity
########

#
# ServerName: the hostname of your server, as advertised to the world.
# By default CUPS will use the hostname of the system.
#
# To set the default server used by clients, see the client.conf file.
#

#ServerName myhost.domain.com

#
# ServerAdmin: the email address to send all complaints/problems to.
# By default CUPS will use "root@hostname".
#

#ServerAdmin root@your.domain.com

########
######## Server Options
########

#
# ConfigFilePerm: permissions of configuration files like
# /etc/cups/printer.conf.
#

ConfigFilePerm 0600

#
# AccessLog: the access log file; if this does not start with a leading /
# then it is assumed to be relative to ServerRoot. By default set to
# "/var/log/cups/access_log"
#
# You can also use the special name "syslog" to send the output to the
# syslog file or daemon.
#

#AccessLog /var/log/cups/access_log

#
# Classification: the classification level of the server. If set, this
# classification is displayed on all pages, and raw printing is disabled.
# The default is the empty string.
#

#Classification classified
#Classification confidential
#Classification secret
#Classification topsecret
#Classification unclassified

#
# ClassifyOverride: whether to allow users to override the classification
# on printouts. If enabled, users can limit banner pages to before or
# after the job, and can change the classification of a job, but cannot
# completely eliminate the classification or banners.
#
# The default is off.
#

#ClassifyOverride off

#
# DataDir: the root directory for the CUPS data files.
# By default "/usr/share/cups".
#

#DataDir /usr/share/cups

#
# DefaultCharset: the default character set to use. If not specified,
# defaults to "utf-8". Note that this can also be overridden in
# HTML documents...
#

DefaultCharset notused

#
# DefaultLanguage: the default language if not specified by the browser.
# If not specified, the current locale is used.
#

#DefaultLanguage en

#
# DocumentRoot: the root directory for HTTP documents that are served.
# By default "/usr/share/cups/doc-root".
#

#DocumentRoot /usr/share/cups/doc-root

#
# ErrorLog: the error log file; if this does not start with a leading /
# then it is assumed to be relative to ServerRoot. By default set to
# "/var/log/cups/error_log"
#
# You can also use the special name "syslog" to send the output to the
# syslog file or daemon.
#

#ErrorLog /var/log/cups/error_log

#
# FileDevice: determines whether the scheduler will allow new printers
# to be added using device URIs of the form "file:/foo/bar". The default
# is not to allow file devices due to the potential security vulnerability
# and due to the fact that file devices do not support raw printing.
#

#FileDevice No

#
# FontPath: the path to locate all font files (currently only for pstoraster)
# By default "/usr/share/cups/fonts".
#

#FontPath /usr/share/cups/fonts

#
# LogLevel: controls the number of messages logged to the ErrorLog
# file and can be one of the following:
#
# debug2 Log everything.
# debug Log almost everything.
# info Log all requests and state changes.
# warn Log errors and warnings.
# error Log only errors.
# none Log nothing.
#

LogLevel info

#
# MaxLogSize: controls the maximum size of each log file before they are
# rotated. Defaults to 1048576 (1MB). Set to 0 to disable log rotating.
#

#MaxLogSize 0

#
# PageLog: the page log file; if this does not start with a leading /
# then it is assumed to be relative to ServerRoot. By default set to
# "/var/log/cups/page_log"
#
# You can also use the special name "syslog" to send the output to the
# syslog file or daemon.
#

#PageLog /var/log/cups/page_log

#
# PreserveJobHistory: whether or not to preserve the job history after a
# job is completed, cancelled, or stopped. Default is Yes.
#

#PreserveJobHistory Yes

#
# PreserveJobFiles: whether or not to preserve the job files after a
# job is completed, cancelled, or stopped. Default is No.
#

#PreserveJobFiles No

#
# AutoPurgeJobs: automatically purge jobs when not needed for quotas.
# Default is No.
#

#AutoPurgeJobs No

#
# MaxCopies: maximum number of copies that a user can request. Default is
# 100.
#

#MaxCopies 100

#
# MaxJobs: maximum number of jobs to keep in memory (active and completed.)
# Default is 500; the value 0 is used for no limit.
#

#MaxJobs 500

#
# MaxJobsPerPrinter: maximum number of active jobs per printer. The default
# is 0 for no limit.
#

#MaxJobsPerPrinter 0

#
# MaxJobsPerUser: maximum number of active jobs per user. The default
# is 0 for no limit.
#

#MaxJobsPerUser 0

#
# MaxPrinterHistory: controls the maximum number of history collections
# in the printer-state-history attribute. Set to 0 to disable history
# data.
#

#MaxPrinterHistory 10

#
# Printcap: the name of the printcap file. Default is /etc/printcap.
# Leave blank to disable printcap file generation.
#

Printcap /var/run/cups/printcap

#
# PrintcapFormat: the format of the printcap file, currently either
# BSD or Solaris. The default is "BSD".
#

#PrintcapFormat BSD
#PrintcapFormat Solaris

#
# PrintcapGUI: the name of the GUI options panel program to associate
# with print queues under IRIX. The default is "/usr/bin/glpoptions"
# from ESP Print Pro.
#
# This option is only used under IRIX; the options panel program
# must accept the "-d printer" and "-o options" options and write
# the selected printer options back to stdout on completion.
#

#PrintcapGUI /usr/bin/glpoptions

#
# RequestRoot: the directory where request files are stored.
# By default "/var/spool/cups".
#

#RequestRoot /var/spool/cups

#
# RemoteRoot: the name of the user assigned to unauthenticated accesses
# from remote systems. By default "remroot".
#

#RemoteRoot remroot

#
# ServerBin: the root directory for the scheduler executables.
# By default "/usr/lib/cups".
#

#ServerBin /usr/lib/cups

#
# ServerRoot: the root directory for the scheduler.
# By default "/etc/cups".
#

#ServerRoot /etc/cups

#
# ServerTokens: specifies what information in provided in the Server
# header of HTTP responses. The default is Minor.
#
# ServerTokens None
# ServerTokens ProductOnly CUPS
# ServerTokens Major CUPS/1
# ServerTokens Minor CUPS/1.1
# ServerTokens Minimal CUPS/1.1.23
# ServerTokens OS CUPS/1.1.23 (uname)
# ServerTokens Full CUPS/1.1.23 (uname) IPP/1.1
#

#ServerTokens Minor

########
######## Fax Support
########

#
# FaxRetryLimit: the number of times a fax job is retried.
# The default is 5 times.
#

#FaxRetryLimit 5

#
# FaxRetryInterval: the number of seconds between fax job retries.
# The default is 300 seconds/5 minutes.
#

#FaxRetryInterval 300

########
######## Encryption Support
########

#
# ServerCertificate: the file to read containing the server's certificate.
# Defaults to "/etc/cups/ssl/server.crt".
#

#ServerCertificate /etc/cups/ssl/server.crt

#
# ServerKey: the file to read containing the server's key.
# Defaults to "/etc/cups/ssl/server.key".
#

#ServerKey /etc/cups/ssl/server.key

########
######## Filter Options
########

#
# User/Group: the user and group the server runs under. Normally this
# must be cupsys and lpadmin, however you can configure things for another
# user or group as needed.
#
# Note: the server must be run initially as root to support the
# default IPP port of 631. It changes users whenever an external
# program is run, or if the RunAsUser directive is specified...
#

#User cupsys
#Group lpadmin

#
# RunAsUser: The RunAsUser directive controls whether the scheduler runs as the
# unpriviledged user account (usually cupsys). The default is No which
# leaves the scheduler running as the root user. However, the Debian package
# was prepared to work as user cupsys, which greatly reduces the impact of
# security holes.
#
# Note: Running as a non-priviledged user may prevent LPD and locally connected
# printers from working due to permission problems. The lpd backend will
# automatically use a non-priviledged mode that is not 100% compliant with RFC
# 1179. The parallel, serial, and usb backends will need write access to the
# corresponding device files.
#

RunAsUser Yes

#
# RIPCache: the amount of memory that each RIP should use to cache
# bitmaps. The value can be any real number followed by "k" for
# kilobytes, "m" for megabytes, "g" for gigabytes, or "t" for tiles
# (1 tile = 256x256 pixels.) Defaults to "8m" (8 megabytes).
#

#RIPCache 8m

#
# TempDir: the directory to put temporary files in. This directory must be
# writable by the user defined above! Defaults to "/var/spool/cups/tmp" or
# the value of the TMPDIR environment variable.
#

#TempDir /var/spool/cups/tmp

#
# FilterLimit: sets the maximum cost of all job filters that can be run
# at the same time. A limit of 0 means no limit. A typical job may need
# a filter limit of at least 200; limits less than the minimum required
# by a job force a single job to be printed at any time.
#
# The default limit is 0 (unlimited).
#

#FilterLimit 0

########
######## Network Options
########

#
# Ports/addresses that we listen to. The default port 631 is reserved
# for the Internet Printing Protocol (IPP) and is what we use here.
#
# You can have multiple Port/Listen lines to listen to more than one
# port or address, or to restrict access:
#
# Port 80
# Port 631
# Listen hostname
# Listen hostname:80
# Listen hostname:631
# Listen 1.2.3.4
# Listen 1.2.3.4:631
#
# NOTE: Unfortunately, most web browsers don't support TLS or HTTP Upgrades
# for encryption. If you want to support web-based encryption you'll
# probably need to listen on port 443 (the "https" port...)
#
# NOTE 2: In order for the command-line and web interfaces to work, you
# must have at least one Port or Listen line that allows access from the
# local loopback address (localhost).
#

#Port 80
#Port 443
#Port 631
#
Listen 127.0.0.1:631

#
# HostNameLookups: whether or not to do lookups on IP addresses to get a
# fully-qualified hostname. This defaults to Off for performance reasons...
#

#HostNameLookups On

#
# KeepAlive: whether or not to support the Keep-Alive connection
# option. Default is on.
#

#KeepAlive On

#
# KeepAliveTimeout: the timeout before Keep-Alive connections are
# automatically closed. Default is 60 seconds.
#

#KeepAliveTimeout 60

#
# MaxClients: controls the maximum number of simultaneous clients that
# will be handled. Defaults to 100.
#

#MaxClients 100

#
# MaxClientsPerHost: controls the maximum number of simultaneous clients that
# will be handled from a specific host. Defaults to 10 or 1/10th of the
# MaxClients setting, whichever is larger. A value of 0 specifies the
# automatic (10 or 1/10th) setting.
#

#MaxClientsPerHost 0

#
# MaxRequestSize: controls the maximum size of HTTP requests and print files.
# Set to 0 to disable this feature (defaults to 0.)
#

#MaxRequestSize 0

#
# Timeout: the timeout before requests time out. Default is 300 seconds.
#

#Timeout 300

########
######## Browsing Options
########

#
# Browsing: whether or not to broadcast and/or listen for CUPS printer
# information on the network. For Ubuntu, this setting has been externalized to
# a separate configuration file cupsd-browsing.conf. This allows to change the
# browsing setting with /usr/share/cups/enable_browsing (or manually) without
# modifying this main configuration file, which avoids dpkg questions on
# conffile upgrades.

Include cupsd-browsing.conf

#
# BrowseProtocols: which protocols to use for browsing. Can be
# any of the following separated by whitespace and/or commas:
#
# all - Use all supported protocols.
# cups - Use the CUPS browse protocol.
# slp - Use the SLPv2 protocol.
#
# The default is "cups".
#
# NOTE: If you choose to use SLPv2, it is *strongly* recommended that
# you have at least one SLP Directory Agent (DA) on your
# network. Otherwise, browse updates can take several seconds,
# during which the scheduler will not respond to client
# requests.
#

#BrowseProtocols cups

#
# BrowseAddress: specifies a broadcast address to be used. By
# default browsing information is not sent!
#
# Note: HP-UX does not properly handle broadcast unless you have a
# Class A, B, C, or D netmask (i.e. no CIDR support).
#
# Note: Using the "global" broadcast address (255.255.255.255) will
# activate a Linux demand-dial link with the default configuration.
# If you have a LAN as well as the dial-up link, use the LAN's
# broadcast address.
#
# The @LOCAL address broadcasts to all non point-to-point interfaces.
# For example, if you have a LAN and a dial-up link, @LOCAL would
# send printer updates to the LAN but not to the dial-up link.
# Similarly, the @IF(name) address sends to the named network
# interface, e.g. @IF(eth0) under Linux. Interfaces are refreshed
# automatically (no more than once every 60 seconds), so they can
# be used on dynamically-configured interfaces, e.g. PPP, 802.11, etc.
#

#BrowseAddress x.y.z.255
#BrowseAddress x.y.255.255
#BrowseAddress x.255.255.255
#BrowseAddress 255.255.255.255
BrowseAddress @LOCAL
#BrowseAddress @IF(name)

#
# BrowseShortNames: whether or not to use "short" names for remote printers
# when possible (e.g. "printer" instead of "printer@host".) Enabled by
# default.
#

#BrowseShortNames Yes

#
# BrowseAllow: specifies an address mask to allow for incoming browser
# packets. The default is to allow packets from all addresses.
#
# BrowseDeny: specifies an address mask to deny for incoming browser
# packets. The default is to deny packets from no addresses.
#
# Both "BrowseAllow" and "BrowseDeny" accept the following notations for
# addresses:
#
# All
# None
# *.domain.com
# .domain.com
# host.domain.com
# nnn.*
# nnn.nnn.*
# nnn.nnn.nnn.*
# nnn.nnn.nnn.nnn
# nnn.nnn.nnn.nnn/mm
# nnn.nnn.nnn.nnn/mmm.mmm.mmm.mmm
# @LOCAL
# @IF(name)
#
# The hostname/domainname restrictions only work if you have turned hostname
# lookups on!
#

#BrowseAllow address
#BrowseDeny address

#
# BrowseInterval: the time between browsing updates in seconds. Default
# is 30 seconds.
#
# Note that browsing information is sent whenever a printer's state changes
# as well, so this represents the maximum time between updates.
#
# Set this to 0 to disable outgoing broadcasts so your local printers are
# not advertised but you can still see printers on other hosts.
#

#BrowseInterval 30

#
# BrowseOrder: specifies the order of BrowseAllow/BrowseDeny comparisons.
#

#BrowseOrder allow,deny
#BrowseOrder deny,allow

#
# BrowsePoll: poll the named server(s) for printers
#

#BrowsePoll address:port
BrowsePoll suseserver:631

#
# BrowsePort: the port used for UDP broadcasts. By default this is
# the IPP port; if you change this you need to do it on all servers.
# Only one BrowsePort is recognized.
#

#BrowsePort 631

#
# BrowseRelay: relay browser packets from one address/network to another.
#

#BrowseRelay source-address destination-address
#BrowseRelay @IF(src) @IF(dst)

#
# BrowseTimeout: the timeout for network printers - if we don't
# get an update within this time the printer will be removed
# from the printer list. This number definitely should not be
# less the BrowseInterval value for obvious reasons. Defaults
# to 300 seconds.
#

#BrowseTimeout 300

#
# ImplicitClasses: whether or not to use implicit classes.
#
# Printer classes can be specified explicitly in the classes.conf
# file, implicitly based upon the printers available on the LAN, or
# both.
#
# When ImplicitClasses is On, printers on the LAN with the same name
# (e.g. Acme-LaserPrint-1000) will be put into a class with the same
# name. This allows you to setup multiple redundant queues on a LAN
# without a lot of administrative difficulties. If a user sends a
# job to Acme-LaserPrint-1000, the job will go to the first available
# queue.
#
# Enabled by default.
#

#ImplicitClasses On

#
# ImplicitAnyClasses: whether or not to create "AnyPrinter" implicit
# classes.
#
# When ImplicitAnyClasses is On and a local queue of the same name
# exists, e.g. "printer", "printer@server1", "printer@server1", then
# an implicit class called "Anyprinter" is created instead.
#
# When ImplicitAnyClasses is Off, implicit classes are not created
# when there is a local queue of the same name.
#
# Disabled by default.
#

#ImplicitAnyCLasses Off

#
# HideImplicitMembers: whether or not to show the members of an
# implicit class.
#
# When HideImplicitMembers is On, any remote printers that are
# part of an implicit class are hidden from the user, who will
# then only see a single queue even though many queues will be
# supporting the implicit class.
#
# Enabled by default.
#

#HideImplicitMembers On

########
######## Security Options
########

#
# SystemGroup: the group name for "System" (printer administration)
# access. The default varies depending on the operating system, but
# will be "sys", "system", or "root" (checked for in that order.)
#
# Debian: The default CUPS group is "lpadmin".
#

#SystemGroup lpadmin

#
# RootCertDuration: How frequently the root certificate is regenerated.
# Defaults to 300 seconds.
#

#RootCertDuration 300

#
# Access permissions for each directory served by the scheduler.
# Locations are relative to DocumentRoot...
#
# AuthType: the authorization to use:
#
# None - Perform no authentication
# Basic - Perform authentication using the HTTP Basic method.
# Digest - Perform authentication using the HTTP Digest method.
#
# (Note: local certificate authentication can be substituted by
# the client for Basic or Digest when connecting to the
# localhost interface)
#
# AuthClass: the authorization class; currently only "Anonymous", "User",
# "System" (valid user belonging to group SystemGroup), and "Group"
# (valid user belonging to the specified group) are supported.
#
# AuthGroupName: the group name for "Group" authorization.
#
# Order: the order of Allow/Deny processing.
#
# Allow: allows access from the specified hostname, domain, IP address,
# network, or interface.
#
# Deny: denies access from the specified hostname, domain, IP address,
# network, or interface.
#
# Both "Allow" and "Deny" accept the following notations for addresses:
#
# All
# None
# *.domain.com
# .domain.com
# host.domain.com
# nnn.*
# nnn.nnn.*
# nnn.nnn.nnn.*
# nnn.nnn.nnn.nnn
# nnn.nnn.nnn.nnn/mm
# nnn.nnn.nnn.nnn/mmm.mmm.mmm.mmm
# @LOCAL
# @IF(name)
#
# The host and domain address require that you enable hostname lookups
# with "HostNameLookups On" above.
#
# The @LOCAL address allows or denies from all non point-to-point
# interfaces. For example, if you have a LAN and a dial-up link,
# @LOCAL could allow connections from the LAN but not from the dial-up
# link. Similarly, the @IF(name) address allows or denies from the
# named network interface, e.g. @IF(eth0) under Linux. Interfaces are
# refreshed automatically (no more than once every 60 seconds), so
# they can be used on dynamically-configured interfaces, e.g. PPP,
# 802.11, etc.
#
# Encryption: whether or not to use encryption; this depends on having
# the OpenSSL library linked into the CUPS library and scheduler.
#
# Possible values:
#
# Always - Always use encryption (SSL)
# Never - Never use encryption
# Required - Use TLS encryption upgrade
# IfRequested - Use encryption if the server requests it
#
# The default value is "IfRequested".
#

<Location />
Order Deny,Allow
Deny From All
Allow From 127.0.0.1
</Location>

#<Location /classes>
#
# You may wish to limit access to printers and classes, either with Allow
# and Deny lines, or by requiring a username and password.
#
#</Location>

#<Location /classes/name>
#
# You may wish to limit access to printers and classes, either with Allow
# and Deny lines, or by requiring a username and password.
#
#</Location>

<Location /jobs>
#
# You may wish to limit access to job operations, either with Allow
# and Deny lines, or by requiring a username and password.
#
AuthType Basic
AuthClass User
</Location>

#<Location /printers>
#
# You may wish to limit access to printers and classes, either with Allow
# and Deny lines, or by requiring a username and password.
#
#</Location>

#<Location /printers/name>
#
# You may wish to limit access to printers and classes, either with Allow
# and Deny lines, or by requiring a username and password.
#

## Anonymous access (default)
#AuthType None

## Require a username and password (Basic authentication)
#AuthType Basic
#AuthClass User

## Require a username and password (Digest/MD5 authentication)
#AuthType Digest
#AuthClass User

## Restrict access to local domain
#Order Deny,Allow
#Deny From All
#Allow From .mydomain.com
#</Location>

<Location /admin>
#
# You definitely will want to limit access to the administration functions.
# The default configuration requires a local connection from a user who
# is a member of the system group to do any admin tasks. You can change
# the group name using the SystemGroup directive.
#

AuthType Basic
AuthClass System

## Restrict access to local domain
Order Deny,Allow
Deny From All
Allow From 127.0.0.1

#Encryption Required
</Location>

LedStyle · 11 de Novembro de 2005, 01:35

Vc consegue acessar mas e administrar? Vc consegue adicionar uma impressora por lá?

AlexBR · 11 de Novembro de 2005, 08:39

Citação de: "LedStyle"Vc consegue acessar mas e administrar? Vc consegue adicionar uma impressora por lá?

Claro que não! :-) É que meu PC não é servidor de impressão. Então, não preciso administrar nada no cups. Mas... Bom... aqui vai a dica para administrar impressoras no cups via web.

1) sudo lppasswd -a admin -g lpadmin

Neste caso, admin é o usuário que vai ser promovido a administrador de impressão.

É pedido para você definir uma nova senha.

2) Vá em /etc/cups/cups.conf

E deixe seu módulo admin assim:

<Location /admin>
AuthType BasicDigest
AuthClass Group
AuthGroupName lpadmin

Order Deny,Allow
Deny From All
Allow From 127.0.0.1
</Location>

3) Have fun!!!!

Isso bem que poderia ir para sessão dica do dia, né? :-)

Como administrar remotamente Cups pela interface web ?

madtrek

AlexBR

LedStyle

AlexBR