[sane-devel] scanbd problem with dbus permission ?

[Michael Markusch]

Hi,

I tried to install scanbd and I guess that's very easy, but now I have a
permission problem. In the past I use my scanner with sane as scanserver
and everything worked.

My system:
Debian Wheezy, Kernel 3.6.11 on Raspberry Pi

Scanner:
Canon canoscan lide 35


Here my installation steps:

- install libconfuse-dev libsane-dev libudev-dev libusb-dev
- I use scanbd from SVN
- ./configure --enable-scanbuttond (no problems)
- make (no problems)
- make install (no problems)
- copy scanbd_dbus.conf to /etc/dbus-1/system.d/
- install xinetd
- generate /etc/xinetd.d/sane-port
- edit /etc/sane.d/dll.conf set only "net"
- edit /usr/local/etc/scanbd/dll.conf set "#net"
- edit /etc/sane.d/net.conf set localhost and connect_timeout = 60
- copy backends /etc/sane.d/ to /usr/local/etc/scanbd/
- export SANE_CONFIG_DIR=/usr/local/etc/scanbd
- /usr/local/sbin/scanbd -d -f -c /usr/local/etc/scanbd/scanbd.conf
(with problems)

Log:

> /usr/local/sbin/scanbd: debug on: level: 7
> /usr/local/sbin/scanbd: dropping privs to uid saned
> /usr/local/sbin/scanbd: dropping privs to gid lp
> /usr/local/sbin/scanbd: drop privileges to gid: 7
> /usr/local/sbin/scanbd: Can't set the effective gid to 7
> /usr/local/sbin/scanbd: drop privileges to uid: 112
> /usr/local/sbin/scanbd: Can't set the effective uid to 112
> /usr/local/sbin/scanbd: dbus_init
> /usr/local/sbin/scanbd: dbus match
> type='signal',interface='org.freedesktop.Hal.Manager'
> /usr/local/sbin/scanbd: Loading
> /usr/local/lib/scanbd/scanbuttond/backends/meta.so
> /usr/local/sbin/scanbd: meta-backend: init
> /usr/local/sbin/scanbd: libusbi: initializing...
> /usr/local/sbin/scanbd: Loading
> /usr/local/lib/scanbd/scanbuttond/backends/hp3500.so
> /usr/local/sbin/scanbd: meta-backend: attaching backend: HP3500 USB
> /usr/local/sbin/scanbd: hp3500-backend: init
> /usr/local/sbin/scanbd: Loading
> /usr/local/lib/scanbd/scanbuttond/backends/snapscan.so
> /usr/local/sbin/scanbd: meta-backend: attaching backend: Snapscan USB
> /usr/local/sbin/scanbd: snapscan-backend: init
> /usr/local/sbin/scanbd: Loading
> /usr/local/lib/scanbd/scanbuttond/backends/niash.so
> /usr/local/sbin/scanbd: meta-backend: attaching backend: Niash USB
> /usr/local/sbin/scanbd: niash-backend: init
> /usr/local/sbin/scanbd: Loading
> /usr/local/lib/scanbd/scanbuttond/backends/epson_vphoto.so
> /usr/local/sbin/scanbd: meta-backend: attaching backend: Epson VX00
> Photo USB
> /usr/local/sbin/scanbd: epson-vphoto-backend: init
> /usr/local/sbin/scanbd: Scanning for local-only devices
> /usr/local/sbin/scanbd: Can't get the scbtn device list
> /usr/local/sbin/scanbd: device list null
> /usr/local/sbin/scanbd: start_scbtn_threads
> /usr/local/sbin/scanbd: start the threads (0)
> /usr/local/sbin/scanbd: start dbus thread
> /usr/local/sbin/scanbd: Not Primary Owner (-1)
> /usr/local/sbin/scanbd: Name Error (Connection ":1.48" is not allowed
> to own the service "de.kmux.scanbd.server" due to security policies in
> the configuration file)

If I started scanbd as "sudo":

Log:

> ...
> /usr/local/sbin/scanbd: meta-backend: attaching backend: Epson VX00
> Photo USB
> /usr/local/sbin/scanbd: epson-vphoto-backend: init
> /usr/local/sbin/scanbd: Scanning for local-only devices
> /usr/local/sbin/scanbd: Can't get the scbtn device list
> /usr/local/sbin/scanbd: device list null
> /usr/local/sbin/scanbd: start_scbtn_threads
> /usr/local/sbin/scanbd: start the threads (0)
> /usr/local/sbin/scanbd: start dbus thread
> /usr/local/sbin/scanbd: timeout: 500 ms
> /usr/local/sbin/scanbd: Iteration on dbus call
> /usr/local/sbin/scanbd: Iteration on dbus call
> /usr/local/sbin/scanbd: Iteration on dbus call
> /usr/local/sbin/scanbd: Iteration on dbus call
> /usr/local/sbin/scanbd: Iteration on dbus call
> /usr/local/sbin/scanbd: Iteration on dbus call

I tried also too:

- SANE_CONFIG_DIR=/usr/local/etc/scanbd scanimage -L (with problems)
- copy 99-saned.rules to /lib/udev/rules.d
- udevadm trigger
- SANE_CONFIG_DIR=/usr/local/etc/scanbd scanimage -L (with problems)
- sudo SANE_CONFIG_DIR=/usr/local/etc/scanbd scanimage -L (no problems)


I'm not familiar with dbus and so on... Can someone help me please?

Thanks,
Michael