[sane-devel] saned and xinetd
Fred. Oger
fred.oger at gmail.com
Sun Feb 8 14:53:17 UTC 2009
Hi,
This does work when saned -d is started as user saned. So I guess the
trouble must be somewhere else.
Thanks anyway,
Fred.
m. allan noah wrote:
> Two different users. Try to su to the saned user, and run the daemon
> in debug mode there. If it does not work, then saned user does not
> have perms to access the device.
>
> allan
>
> On Sun, Feb 8, 2009 at 9:25 AM, Fred. Oger <fred.oger at gmail.com> wrote:
>> 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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>>
>
>
>
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