Invald Javascript Object Notation

[pedrodcc]

Server: Ubuntu Server 12.04
Client: windows 7

I cannot scan because I receive an empty JSON [1].
Despite that, apache gives no errors.

[1]: {"DPI":"","WIDTH":0,"HEIGHT":0,"MODE":"ge: open of device niash:libusb:003:005 failed: Device busy
Usage: scanimage"}

Do you know where i can start find the error?Thanks

[pedrodcc]

If I do [1] works.
'scanimage --device "niash:libusb:003:004" --mode Color --resolution 300 --depth 8 -x 215 -y 297 > test3.pnm'

[pedrodcc]

In ubuntu desktop doesn't work like windows.

[GM-Script-Writer-62850]

what does the debug console show? (ctrl+shift+d or click the link on the config page)
use the check for scanners feature again, sometime scanimage likes to crash and it will save incorrect data into that json

[pedrodcc]

I get nothing from the console, or only that: 'Input data is invalid and most likely an attempt to run malicious code on the server. Denied'.
I already tried check for scanners again and also remove scanners.json and try again but that not fix the problem.

Thanks

[GM-Script-Writer-62850]

what does the console show when you scan for scanners? should be a very large amount of stuff
BTW which version are you using of the scanner software

[pedrodcc]

I am using master version from here.

Shows this:

www-data@192.168.50.65:/var/www/scan$ scanimage -f \"{\\\"ID\\\":%i,\\\"INUSE\\\":0,\\\"DEVICE\\\":\\\"%d\\\",\\\"NAME\\\":\\\"%v %m %t\\\"},\"
{"ID":0,"INUSE":0,"DEVICE":"niash:libusb:003:004","NAME":"Hewlett-Packard ScanJet 3400C flatbed scanner"},
www-data@192.168.50.65:/var/www/scan$ scanimage --help -d \"niash:libusb:003:004\"
Usage: scanimage [OPTION]...

Start image acquisition on a scanner device and write image data to
standard output.

Parameters are separated by a blank from single-character options (e.g.
-d epson) and by a "=" from multi-character options (e.g. --device-name=epson).
-d, --device-name=DEVICE   use a given scanner device (e.g. hp:/dev/scanner)
    --format=pnm|tiff      file format of output file
-i, --icc-profile=PROFILE  include this ICC profile into TIFF file
-L, --list-devices         show available scanner devices
-f, --formatted-device-list=FORMAT similar to -L, but the FORMAT of the output
                           can be specified: %d (device name), %v (vendor),
                           %m (model), %t (type), %i (index number), and
                           %n (newline)
-b, --batch[=FORMAT]       working in batch mode, FORMAT is `out%d.pnm' or
                           `out%d.tif' by default depending on --format
    --batch-start=#        page number to start naming files with
    --batch-count=#        how many pages to scan in batch mode
    --batch-increment=#    increase page number in filename by #
    --batch-double         increment page number by two, same as
                           --batch-increment=2
    --batch-prompt         ask for pressing a key before scanning a page
    --accept-md5-only      only accept authorization requests using md5
-p, --progress             print progress messages
-n, --dont-scan            only set options, don't actually scan
-T, --test                 test backend thoroughly
-A, --all-options          list all available backend options
-h, --help                 display this help message and exit
-v, --verbose              give even more status messages
-B, --buffer-size=#        change input buffer size (in kB, default 32)
-V, --version              print version information

Options specific to device `niash:libusb:003:004':
  Geometry:
    -l 0..220mm (in steps of 1) [0]
        Top-left x position of scan area.
    -t 0..296mm (in steps of 1) [0]
        Top-left y position of scan area.
    -x 0..220mm (in steps of 1) [210]
        Width of scan-area.
    -y 0..296mm (in steps of 1) [290]
        Height of scan-area.
    --resolution 75|150|300|600dpi [150]
        Sets the resolution of the scanned image.
  Image:
    --gamma-table 0..255,... (in steps of 1)
        Gamma-correction table.  In color mode this option equally affects the
        red, green, and blue channels simultaneously (i.e., it is an intensity
        gamma table).
  Scan Mode:
    --mode Color|Gray|Lineart [Color]
        Selects the scan mode (e.g., lineart, monochrome, or color).
  Enhancement:
    --threshold 0..100% (in steps of 1) [inactive]
        Select minimum-brightness to get a white point

Type ``scanimage --help -d DEVICE'' to get list of all options for DEVICE.

List of available devices:
    niash:libusb:003:004
www-data@192.168.50.65:/var/www/scan$ 

[GM-Script-Writer-62850]

just incase that crashed last time and not this time does the scanenr now work or does ti still get bocked my that security feature (it makes sure you send the scanner data that is allowed, at least it should) i added in

[GM-Script-Writer-62850]

BTW based on the device string that scanner will require using the access enabler, mentioned on the configure page, since you were able to get this far you probably have it installed, but just be be sure i am mentioning it in-case you did a manual install

[GM-Script-Writer-62850]

i see the issue, your scanner does not have a --source parameter, i assumed all scanners had that

[pedrodcc]

Now the scanner works but at the first the console outputs the same that the began..strange

[GM-Script-Writer-62850]

can you try something for me, it may work, but the source value looks screwy
can you run sudo -u www-data sed -i 's/animage/Inactive/g' /path/to/scanners.json then load teh scanner page and run a scan and post what the debug console shows?

what probably happened was scanimage segfaulted when you scanned for scanners the 1st time

at the very least we have a UI bug to patch here

[GM-Script-Writer-62850]

it looks like i can make a patch for the source issue easily :)
that fakescanner option i made works better than i expected :)

[GM-Script-Writer-62850]

Changes:

• 6068bd3
• 198b3ee

[pedrodcc]

Hi ,

Sorry for the anwser so late.
I will try with new changes