Re: [sane-devel] Canon ImageClass MF644Cdw

[David McMahon]

On Thu, Oct 31, 2019 at 2:56 PM Ralph Little  wrote:

> Hi David,
>
> On Thu, Oct 31, 2019 at 2:45 PM David McMahon  wrote:
>
>> ...
>> [bjnp]  0050:45 53 3a 43 61 6e 6f 6e  20 4d 46 36 34 32 43 2f
>> [bjnp]  0060:36 34 33 43 2f 36 34 34  43 3b
>> [bjnp] get_scanner_id: Scanner identity string =
>> MFG:CANON;CMD:MFNP1,MultiPASS 2.1;MDL:MF642C/643C/644C;CLS:IMG;DES:Canon
>> MF642C/643C/644C; - length = 90
>> [bjnp] get_scanner_id: Scanner model = MF642C/643C/644C
>> *** buffer overflow detected ***: scanimage terminated
>> Aborted
>>
>>
> Having a quick look at the code, it looks like the very next thing the
> backend does is try to generate a "serial number" by using the hostname.
> Involves an unprotected strcpy().
> Does your scanner machine have a particularly long hostname?
>

Thanks for the clue!  Looking on that on the settings page of the printer,
the hostname is the default of "Canoncbcab3" which seems harmless enough.
I changed it to "Can" to see if that changed anything, but still getting
the buffer overflow.
If you have a link handy to that part of the code, can you point me to it?
Maybe it's something else right after the strcpy().


>
> Cheers,
> Ralph
>

Re: [sane-devel] Canon ImageClass MF644Cdw

[David McMahon]

So close!   Thanks to Kip and Rolf for updating the package.

Still wondering if anyone else has hit this problem on LinuxMint or
elsewhere.
I'm still stuck here with a non-functional scanimage / simplescan.

Anyone have any thoughts/pointers/ideas?

$ SANE_DEBUG_BJNP=5 scanimage -L 2>&1
[sanei_debug] Setting debug level of bjnp to 5.
[bjnp] sanei_bjnp_find_devices, pixma backend version: 0.24.1
[bjnp] sanei_bjnp_find_devices: No devices specified in configuration file.
[bjnp] sanei_bjnp_find_devices: Added all configured scanners, now do auto
detection...
[bjnp] prepare_socket: lo is not a valid IPv4 interface, skipping...
[bjnp] prepare_socket: eth0 is IPv4 capable, sending broadcast, socket = 9
[bjnp] prepare_socket: docker0 is IPv4 capable, sending broadcast, socket =
10
[bjnp] prepare_socket: lo is not a valid IPv6 interface, skipping...
[bjnp] prepare_socket: eth0 is IPv6 capable, sending broadcast, socket = 11
[bjnp] sanei_bjnp_find_devices: Select returned, time left 0.40
[bjnp] sanei_find_devices: Discover response:
[bjnp]  :42 4a 4e 50 02 01 00 00  00 00 00 00 00 00 00 00
[bjnp] sanei_bjnp_find_devices: Select returned, time left 0.499986
[bjnp] sanei_find_devices: Discover response:
[bjnp]  :42 4a 4e 50 02 01 00 00  00 00 00 00 00 00 00 00
[bjnp] sanei_bjnp_find_devices: Select returned, time left 0.339876
[bjnp] sanei_find_devices: Discover response:
[bjnp]  :4d 46 4e 50 82 01 00 00  00 00 00 00 00 00 00 10
[bjnp]  0010:00 01 80 00 06 04 10 98  c3 da 2c f7 c0 a8 56 27
[bjnp] get_scanner_name: Forward lookup for canoncbcab3.lan succeeded,
using as hostname
[bjnp] bjnp_allocate_device(mfnp://canoncbcab3.lan:8610/timeout=1) 0
[bjnp] get_scanner_name: Forward lookup for canoncbcab3.lan succeeded,
using as hostname
[bjnp] setup_udp_socket: Setting up a UDP socket, dest: 192.168.86.39  port
8610
[bjnp] bjnp_get_scanner_mac_address: Discover response:
[bjnp]  :4d 46 4e 50 82 01 00 00  00 00 00 00 00 00 00 10
[bjnp]  0010:00 01 80 00 06 04 10 98  c3 da 2c f7 c0 a8 56 27
[bjnp] bjnp_allocate_device: Scanner not yet in our list, added it:
canoncbcab3.lan:8610
[bjnp] get_scanner_id: Get scanner identity
[bjnp]  :4d 46 4e 50 02 30 00 00  00 01 00 00 00 00 00 00
[bjnp] setup_udp_socket: Setting up a UDP socket, dest: 192.168.86.39  port
8610
[bjnp] get_scanner_id: scanner identity:
[bjnp]  :4d 46 4e 50 82 30 00 00  00 01 00 00 00 00 00 5a
[bjnp]  0010:4d 46 47 3a 43 41 4e 4f  4e 3b 43 4d 44 3a 4d 46
[bjnp]  0020:4e 50 31 2c 4d 75 6c 74  69 50 41 53 53 20 32 2e
[bjnp]  0030:31 3b 4d 44 4c 3a 4d 46  36 34 32 43 2f 36 34 33
[bjnp]  0040:43 2f 36 34 34 43 3b 43  4c 53 3a 49 4d 47 3b 44
[bjnp]  0050:45 53 3a 43 61 6e 6f 6e  20 4d 46 36 34 32 43 2f
[bjnp]  0060:36 34 33 43 2f 36 34 34  43 3b
[bjnp] get_scanner_id: Scanner identity string =
MFG:CANON;CMD:MFNP1,MultiPASS 2.1;MDL:MF642C/643C/644C;CLS:IMG;DES:Canon
MF642C/643C/644C; - length = 90
[bjnp] get_scanner_id: Scanner model = MF642C/643C/644C
*** buffer overflow detected ***: scanimage terminated
Aborted

On Sat, Oct 5, 2019 at 1:48 PM David McMahon  wrote:

> Thanks Kip.  I've tried a few more things to try to isolate.
>
> First
>
> $  cat /etc/lsb-release
> DISTRIB_ID=LinuxMint
> DISTRIB_RELEASE=19
> DISTRIB_CODENAME=tara
> DISTRIB_DESCRIPTION="Linux Mint 19 Tara"
>
> Commenting pixma out of dll.conf avoids the buffer overflow but then of
> course the scanner is not found.
>
> $ scanimage -L
>
> No scanners were identified. If you were expecting something different,
> check that the scanner is plugged in, turned on and detected by the
> sane-find-scanner tool (if appropriate). Please read the documentation
> which came with this software (README, FAQ, manpages).
>
> valgrind might be of use here?  Here's a rum with pixma uncommented in
> dll.conf:
>
> $ valgrind scanimage -L
> ==16057== Memcheck, a memory error detector
> ==16057== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
> ==16057== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright
> info
> ==16057== Command: scanimage -L
> ==16057==
> *** buffer overflow detected ***: scanimage terminated
> ==16057==
> ==16057== Process terminating with default action of signal 6 (SIGABRT)
> ==16057==at 0x5526E97: raise (raise.c:51)
> ==16057==by 0x5528800: abort (abort.c:79)
> ==16057==by 0x5571896: __libc_message (libc_fatal.c:181)
> ==16057==by 0x561CCFE: __fortify_fail_abort (fortify_fail.c:33)
> ==16057==by 0x561CD20: __fortify_fail (fortify_fail.c:44)
> ==16057==by 0x561AA0F: __chk_fail (chk_fail.c:28)
> ==16057==by 0x5619F28: _IO_str_chk_overflow (vsprintf_chk.c:31)
> ==16057==by 0x5576493: _IO_default_xsputn (genops.c:417)
> ==16057==by 0x5544FEA: vfprintf (vfprintf.c:1643)
> ==16057==by 0x5619FCA

Re: [sane-devel] Canon ImageClass MF644Cdw

[David McMahon]

Hi Kip, Rolf

I've got the latest and still unable to connect.  Did you need to resolve
anything like this?  Are you just adding a bjnp line to pixma.conf?

$ SANE_DEBUG_BJNP=5 scanimage -L 2>&1
[sanei_debug] Setting debug level of bjnp to 5.
[bjnp] sanei_bjnp_find_devices, pixma backend version: 0.23.4
[bjnp] sanei_bjnp_find_devices: Adding scanner from pixma.conf: bjnp://
192.168.86.39
[bjnp] bjnp_allocate_device(bjnp://192.168.86.39:8612/timeout=1) 0
[bjnp] get_scanner_name: Forward lookup for canoncbcab3.lan succeeded,
using as hostname
[bjnp] setup_udp_socket: Setting up a UDP socket, dest: 192.168.86.39  port
8612
[bjnp] udp_command: ERROR - recv failed: Connection refused[bjnp]
udp_command: ERROR - recv failed: Connection refused[bjnp] udp_command:
ERROR - recv failed: Connection refused[bjnp] udp_command: ERROR - no data
received (timeout = 1)
[bjnp] bjnp_init_device_structure: Cannot read mac address, skipping this
scanner
[bjnp] bjnp_allocate_device: Scanner not yet in our list, added it:
192.168.86.39:8612
[bjnp] get_scanner_id: Get scanner identity
[bjnp]  :42 4a 4e 50 02 30 00 00  00 01 00 00 00 00 00 00
[bjnp] setup_udp_socket: Setting up a UDP socket, dest: 192.168.86.39  port
8612
[bjnp] udp_command: ERROR - recv failed: Connection refused[bjnp]
udp_command: ERROR - recv failed: Connection refused[bjnp] udp_command:
ERROR - recv failed: Connection refused[bjnp] udp_command: ERROR - no data
received (timeout = 1)
[bjnp] get_scanner_id: ERROR - Failed to retrieve scanner identity:
[bjnp] add_scanner: ERROR - Cannot read scanner make & model: bjnp://
192.168.86.39:8612/timeout=1
[bjnp] sanei_bjnp_find_devices: Added all configured scanners, now do auto
detection...
[bjnp] prepare_socket: lo is not a valid IPv4 interface, skipping...
[bjnp] prepare_socket: eth0 is IPv4 capable, sending broadcast, socket = 9
[bjnp] prepare_socket: docker0 is IPv4 capable, sending broadcast, socket =
10
[bjnp] prepare_socket: lo is not a valid IPv6 interface, skipping...
[bjnp] prepare_socket: eth0 is IPv6 capable, sending broadcast, socket = 11
[bjnp] sanei_bjnp_find_devices: Select returned, time left 0.499969
[bjnp] sanei_find_devices: Discover response:
[bjnp]  :4d 46 4e 50 82 01 00 00  00 00 00 00 00 00 00 10
[bjnp]  0010:00 01 80 00 06 04 10 98  c3 da 2c f7 c0 a8 56 27
[bjnp] get_scanner_name: Forward lookup for canoncbcab3.lan succeeded,
using as hostname
[bjnp] bjnp_allocate_device(mfnp://canoncbcab3.lan:8610/timeout=1) 1
[bjnp] get_scanner_name: Forward lookup for canoncbcab3.lan succeeded,
using as hostname
[bjnp] setup_udp_socket: Setting up a UDP socket, dest: 192.168.86.39  port
8610
[bjnp] bjnp_get_scanner_mac_address: Discover response:
[bjnp]  :4d 46 4e 50 82 01 00 00  00 00 00 00 00 00 00 10
[bjnp]  0010:00 01 80 00 06 04 10 98  c3 da 2c f7 c0 a8 56 27
[bjnp] bjnp_allocate_device: Scanner not yet in our list, added it:
canoncbcab3.lan:8610
[bjnp] get_scanner_id: Get scanner identity
[bjnp]  :4d 46 4e 50 02 30 00 00  00 01 00 00 00 00 00 00
[bjnp] setup_udp_socket: Setting up a UDP socket, dest: 192.168.86.39  port
8610
[bjnp] get_scanner_id: scanner identity:
[bjnp]  :4d 46 4e 50 82 30 00 00  00 01 00 00 00 00 00 5a
[bjnp]  0010:4d 46 47 3a 43 41 4e 4f  4e 3b 43 4d 44 3a 4d 46
[bjnp]  0020:4e 50 31 2c 4d 75 6c 74  69 50 41 53 53 20 32 2e
[bjnp]  0030:31 3b 4d 44 4c 3a 4d 46  36 34 32 43 2f 36 34 33
[bjnp]  0040:43 2f 36 34 34 43 3b 43  4c 53 3a 49 4d 47 3b 44
[bjnp]  0050:45 53 3a 43 61 6e 6f 6e  20 4d 46 36 34 32 43 2f
[bjnp]  0060:36 34 33 43 2f 36 34 34  43 3b
*** buffer overflow detected ***: scanimage terminated
[bjnp] get_scanner_id: Scanner identity string =
MFG:CANON;CMD:MFNP1,MultiPASS 2.1;MDL:MF642C/643C/644C;CLS:IMG;DES:Canon
MF642C/643C/644C; - length = 90
[bjnp] get_scanner_id: Scanner model = MF642C/643C/644C

On Sat, Oct 5, 2019 at 8:13 AM Kip Shaffer  wrote:

> I just updated from Rolf's PPA, and I am very happy to say that I can now
> detect and scan from my Canon ImageClass MF644Cdw over the network.  I
> confirmed it can scan in resolutions of 75, 150, 300, 600, 1200, and 2400
> for both Text and Color modes.  It successfully read 2 sided multiple pages
> from the sheet feeder.
>
> The only issue I saw (same as earlier) is that when it completes a job
> reading from the sheet feeder, SimpleScan pops up a dialog box stating
> "Failed to Scan" "Error communicating with scanner."   This does not affect
> the job... all pages were scanned successfully.
>
> Thank you everyone!  I am happy to continue tests if there is energy for
> debugging the error message!
>
> -Kip
>
> On Fri, Oct 4, 2019 at 3:33 PM Rolf Bensch  wrote:
>
>> Hi,
>>
>> It seems that the network model differs between sources and network
>> scanner discovery. I just fixed it. It will be available from my ppa

Re: [sane-devel] Canon ImageClass MF644Cdw

[David McMahon]

On Fri, Oct 4, 2019 at 3:51 AM Rolf Bensch  wrote:

> Hi Kip,
>
> Am 14.09.19 um 03:40 schrieb Kip Shaffer:
> > Scanning Results!  I updated to today's
> version: 1.0.28+git20190913-bionic0
> >
> > Using Simple Scan I was able to scan at 75, 150, 300, 600, 1200, and
> > 2400 dpi in both Text and Photo modes.  Perfect!
>
> I just updated the doc files.
>
> >
> > When scanning from the document feeder, it scans front and back, one
> > sheet or many, but after the job is done there is a pause, and then it
> > says "Error communicating with scanner".
>
> Can you scan again after closing the message and/or does your scanner hang?
>
> The pause comes from adf-wait parameter. Please read the man page for
> details.
>
> >
> > Also, this has all been through USB.  I tried to connect with the
> > network and scanimage -L cannot find it.  I added the address to
> > pixma.conf (neither line helped):
> > bjnp://MF640_192.168.1.97
> > bjnp://192.168.1.97 
>
> Please read 'man sane-pixma' to get some help for this issue. If this
> won't help, please provide a log file with SANE_DEBUG_BJNP.
>

Here's mine:

$ SANE_DEBUG_BJNP=5 scanimage -L 2>&1
[sanei_debug] Setting debug level of bjnp to 5.
[bjnp] sanei_bjnp_find_devices, pixma backend version: 0.23.3
[bjnp] sanei_bjnp_find_devices: Adding scanner from pixma.conf: bjnp://
192.168.86.39
[bjnp] bjnp_allocate_device(bjnp://192.168.86.39:8612/timeout=1) 0
[bjnp] get_scanner_name: Forward lookup for canoncbcab3.lan succeeded,
using as hostname
[bjnp] setup_udp_socket: Setting up a UDP socket, dest: 192.168.86.39  port
8612
[bjnp] udp_command: ERROR - recv failed: Connection refused[bjnp]
udp_command: ERROR - recv failed: Connection refused[bjnp] udp_command:
ERROR - recv failed: Connection refused[bjnp] udp_command: ERROR - no data
received (timeout = 1)
[bjnp] bjnp_init_device_structure: Cannot read mac address, skipping this
scanner
[bjnp] bjnp_allocate_device: Scanner not yet in our list, added it:
192.168.86.39:8612
[bjnp] get_scanner_id: Get scanner identity
[bjnp]  :42 4a 4e 50 02 30 00 00  00 01 00 00 00 00 00 00
[bjnp] setup_udp_socket: Setting up a UDP socket, dest: 192.168.86.39  port
8612
[bjnp] udp_command: ERROR - recv failed: Connection refused[bjnp]
udp_command: ERROR - recv failed: Connection refused[bjnp] udp_command:
ERROR - recv failed: Connection refused[bjnp] udp_command: ERROR - no data
received (timeout = 1)
[bjnp] get_scanner_id: ERROR - Failed to retrieve scanner identity:
[bjnp] add_scanner: ERROR - Cannot read scanner make & model: bjnp://
192.168.86.39:8612/timeout=1
[bjnp] sanei_bjnp_find_devices: Added all configured scanners, now do auto
detection...
[bjnp] prepare_socket: lo is not a valid IPv4 interface, skipping...
[bjnp] prepare_socket: eth0 is IPv4 capable, sending broadcast, socket = 9
[bjnp] prepare_socket: docker0 is IPv4 capable, sending broadcast, socket =
10
[bjnp] prepare_socket: lo is not a valid IPv6 interface, skipping...
[bjnp] prepare_socket: eth0 is IPv6 capable, sending broadcast, socket = 11
[bjnp] sanei_bjnp_find_devices: Select returned, time left 0.499988
[bjnp] sanei_find_devices: Discover response:
[bjnp]  :4d 46 4e 50 82 01 00 00  00 00 00 00 00 00 00 10
[bjnp]  0010:00 01 80 00 06 04 10 98  c3 da 2c f7 c0 a8 56 27
[bjnp] get_scanner_name: Forward lookup for canoncbcab3.lan succeeded,
using as hostname
[bjnp] bjnp_allocate_device(mfnp://canoncbcab3.lan:8610/timeout=1) 1
[bjnp] get_scanner_name: Forward lookup for canoncbcab3.lan succeeded,
using as hostname
[bjnp] setup_udp_socket: Setting up a UDP socket, dest: 192.168.86.39  port
8610
[bjnp] bjnp_get_scanner_mac_address: Discover response:
[bjnp]  :4d 46 4e 50 82 01 00 00  00 00 00 00 00 00 00 10
[bjnp]  0010:00 01 80 00 06 04 10 98  c3 da 2c f7 c0 a8 56 27
[bjnp] bjnp_allocate_device: Scanner not yet in our list, added it:
canoncbcab3.lan:8610
[bjnp] get_scanner_id: Get scanner identity
[bjnp]  :4d 46 4e 50 02 30 00 00  00 01 00 00 00 00 00 00
[bjnp] setup_udp_socket: Setting up a UDP socket, dest: 192.168.86.39  port
8610
[bjnp] get_scanner_id: scanner identity:
[bjnp]  :4d 46 4e 50 82 30 00 00  00 01 00 00 00 00 00 5a
[bjnp]  0010:4d 46 47 3a 43 41 4e 4f  4e 3b 43 4d 44 3a 4d 46
[bjnp]  0020:4e 50 31 2c 4d 75 6c 74  69 50 41 53 53 20 32 2e
[bjnp]  0030:31 3b 4d 44 4c 3a 4d 46  36 34 32 43 2f 36 34 33
[bjnp]  0040:43 2f 36 34 34 43 3b 43  4c 53 3a 49 4d 47 3b 44
[bjnp]  0050:45 53 3a 43 61 6e 6f 6e  20 4d 46 36 34 32 43 2f
[bjnp]  0060:36 34 33 43 2f 36 34 34  43 3b
[bjnp] get_scanner_id: Scanner identity string =
MFG:CANON;CMD:MFNP1,MultiPASS 2.1;MDL:MF642C/643C/644C;CLS:IMG;DES:Canon
MF642C/643C/644C; - length = 90
[bjnp] get_scanner_id: Scanner model = MF642C/643C/644C
[bjnp] add_scanner: New scanner added:
mfnp://canoncbcab3.lan:8610/timeout=1, serial canoncbcab3.lan, mac
address: 1098c3da2cf7.
[bjnp] sanei_find_devices: Discover response: