[sane-devel] saned and xinetd
Fred. Oger
fred.oger at gmail.com
Sun Feb 8 14:25:49 UTC 2009
Hi all,
I'm trying to set up a shared scanner using saned to use it through my
private network. While it works like a charm when started in debug mode
(-d), I can't find my scanner (an HP PSC 1510) when stated through (x)inetd
Here's my setup:
The server (called server) has the scanner
The client (called frog) tries to connect
Server setup:
/etc/xinet.d/saned
# default: off
# description: The sane server accepts requests
# for network access to a local scanner via the
# network.
service sane
{
port = 6566
socket_type = stream
protocol = tcp
wait = no
user = saned
group = saned
server = /usr/sbin/saned
}
/etc/services:
root at server:~# grep 6566 /etc/services
sane-port 6566/tcp sane saned # SANE network scanner daemon
/etc/sane.d/net.conf (for testing):
# This is the net config file. Each line names a host to attach to.
# If you list "localhost" then your backends can be accessed either
# directly or through the net backend. Going through the net backend
# may be necessary to access devices that need special privileges.
localhost
/etc/sane.d/saned.conf :
#
# saned.conf
#
# The contents of the saned.conf file is a list of host names, IP
# addresses or IP subnets (CIDR notation) that are permitted to use local
# SANE devices. IPv6 addresses must be enclosed in brackets, and should
# always be specified in their compressed form.
#
# The hostname matching is not case-sensitive.
#
192.168.2.0/24
Client side :
fred at frog:~$ more /etc/sane.d/net.conf
# This is the net backend config file.
## net backend options
# Timeout for the initial connection to saned. This will prevent the backend
# from blocking for several minutes trying to connect to an unresponsive
# saned host (network outage, host down, ...). Value in seconds.
connect_timeout = 60
## saned hosts
# Each line names a host to attach to.
# If you list "localhost" then your backends can be accessed either
# directly or through the net backend. Going through the net backend
# may be necessary to access devices that need special privileges.
# localhost
server
When I try to run scanimage when in debug mode
Server side:
root at server:~# /usr/sbin/saned -d255
[saned] main: starting debug mode (level 255)
[saned] main: trying to get port for service `sane-port' (getaddrinfo)
[saned] main: [0] socket () using IPv4
[saned] main: [0] setsockopt ()
[saned] main: [0] bind () to port 6566
[saned] main: [0] listen ()
[saned] main: [1] socket () using IPv6
[saned] main: [1] socket failed: Address family not supported by protocol
[saned] main: waiting for control connection
[saned] saned (AF-indep+IPv6) from sane-backends 1.0.18-cvs ready
[saned] check_host: access by remote host: 192.168.2.2
[saned] check_host: remote host is not IN_LOOPBACK nor IN6_LOOPBACK
[saned] check_host: local hostname: server
[saned] check_host: local hostname(s) (from DNS): server
[saned] check_host: local hostname(s) (from DNS): (null)
[saned] check_host: local hostname(s) (from DNS): (null)
[saned] check_host: remote host doesn't have same addr as local
[saned] check_host: opening config file: /etc/hosts.equiv
[saned] check_host: can't open config file: /etc/hosts.equiv (No such
file or directory)
[saned] check_host: opening config file: saned.conf
[saned] check_host: config file line: `#'
[saned] check_host: config file line: `# saned.conf'
[saned] check_host: config file line: `#'
[saned] check_host: config file line: `# The contents of the saned.conf
file is a list of host names, IP'
[saned] check_host: config file line: `# addresses or IP subnets (CIDR
notation) that are permitted to use local'
[saned] check_host: config file line: `# SANE devices. IPv6 addresses
must be enclosed in brackets, and should'
[saned] check_host: config file line: `# always be specified in their
compressed form.'
[saned] check_host: config file line: `#'
[saned] check_host: config file line: `# The hostname matching is not
case-sensitive.'
[saned] check_host: config file line: `#'
[saned] check_host: config file line: `192.168.2.0/24'
[saned] check_host: subnet with base IP = 192.168.2.0, CIDR netmask = 24
[saned] check_host: access granted from IP address 192.168.2.2 (in
subnet 192.168.2.0/24)
[saned] init: access granted
[saned] init: access granted to fred at 192.168.2.2
[saned] process_request: waiting for request
[saned] process_request: got request 1
[saned] process_request: waiting for request
[saned] process_request: got request 10
[saned] quit: exiting
Client Side:
fred at frog:~$ scanimage -L
device `v4l:/dev/video0' is a Noname USB 2.0 Camera virtual device
device `net:server:hpaio:/usb/PSC_1500_series?serial=MY586D92QD0498' is
a Hewlett-Packard PSC_1500_series all-in-one
fred at frog:~$ SANE_DEBUG_NET=255 scanimage -L
[sanei_debug] Setting debug level of net to 255.
[net] sane_init: authorize = 0x804d520, version_code = 0xbfb74728
[net] sane_init: SANE net backend version 1.0.14 (AF-indep+IPv6) from
sane-backends 1.0.19
[net] sane_init: Client has little endian byte order
[net] sane_init: searching for config file
[net] sane_init: connect timeout set to 60 seconds
[net] sane_init: trying to add server
[net] add_device: adding backend server
[net] add_device: backend server added
[net] sane_init: done reading config
[net] sane_init: evaluating environment variable SANE_NET_HOSTS
[net] sane_init: evaluating environment variable SANE_NET_TIMEOUT
[net] sane_init: done
[net] sane_get_devices: local_only = 0
[net] connect_dev: trying to connect to server
[net] connect_dev: [0] connection succeeded (IPv4)
[net] connect_dev: sanei_w_init
[net] connect_dev: net_init (user=fred, local version=1.0.3)
[net] connect_dev: freeing init reply (status=Success, remote version=1.0.3)
[net] connect_dev: done
[net] sane_get_devices: got
server:hpaio:/usb/PSC_1500_series?serial=MY586D92QD0498
[net] sane_get_devices: finished (1 devices)
device `v4l:/dev/video0' is a Noname USB 2.0 Camera virtual device
device `net:server:hpaio:/usb/PSC_1500_series?serial=MY586D92QD0498' is
a Hewlett-Packard PSC_1500_series all-in-one
[net] sane_exit: exiting
[net] sane_exit: closing dev 0x8093928, ctl=3
[net] sane_exit: finished.
While when run through xinetd
fred at frog:~$ SANE_DEBUG_NET=255 scanimage -L
[sanei_debug] Setting debug level of net to 255.
[net] sane_init: authorize = 0x804d520, version_code = 0xbf8373f8
[net] sane_init: SANE net backend version 1.0.14 (AF-indep+IPv6) from
sane-backends 1.0.19
[net] sane_init: Client has little endian byte order
[net] sane_init: searching for config file
[net] sane_init: connect timeout set to 60 seconds
[net] sane_init: trying to add server
[net] add_device: adding backend server
[net] add_device: backend server added
[net] sane_init: done reading config
[net] sane_init: evaluating environment variable SANE_NET_HOSTS
[net] sane_init: evaluating environment variable SANE_NET_TIMEOUT
[net] sane_init: done
[net] sane_get_devices: local_only = 0
[net] connect_dev: trying to connect to server
[net] connect_dev: [0] connection succeeded (IPv4)
[net] connect_dev: sanei_w_init
[net] connect_dev: net_init (user=fred, local version=1.0.3)
[net] connect_dev: freeing init reply (status=Success, remote version=1.0.3)
[net] connect_dev: done
[net] sane_get_devices: finished (0 devices)
device `v4l:/dev/video0' is a Noname USB 2.0 Camera virtual device
[net] sane_exit: exiting
[net] sane_exit: closing dev 0x8093928, ctl=3
[net] sane_exit: finished.
We only see the local camera but not the HP scanner. The only traces
found in the /var/adm/syslog on the server is :
Feb 8 15:23:10 server xinetd[5860]: xinetd Version 2.3.14 started with
libwrap loadavg options compiled in.
Feb 8 15:23:10 server xinetd[5860]: Started working: 1 available ervice
Feb 8 15:23:20 server saned[5861]: saned (AF-indep+IPv6) from
sane-backends 1.0.18-cvs ready
Feb 8 15:23:20 server saned[5861]: check_host: access by remote host:
192.168.2.2
Feb 8 15:23:20 server saned[5861]: init: access granted to
fred at 192.168.2.2
Feb 8 15:23:21 server saned[5861]: quit: exiting
Any idea ?
Best regards,
Fred. Oger
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