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therealjrd
Tux's lil' helper
Joined: 18 May 2006
Posts: 120
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 Posted: Fri Apr 07, 2017 12:09 pm Post subject: [Solved] Scan from network-connected HP all-in-one? |
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Hi all. Wasn't sure what category this should go in, so I put it here. Mods, please feel free to move as apropriate.
I have an HP M127fn all-in-one device. For logistical reasons in my office, it's connected to the rest of the system over my network. (Too long for a USB cable).
Printing works fine. I'm trying to work out how to get scans working. I've read through the sane/saned doc, but I don't see a way to get it to interface to a network-connected scanner. Perhaps that just isn't supported, and I should find a way to get the unit closer to the server, so I can use USB?
Any pointers/recipes/howtos much appreciated. Thanks in advance...
Last edited by therealjrd on Tue Apr 11, 2017 6:48 pm; edited 1 time in total |
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Juippisi
Developer
Joined: 30 Sep 2005
Posts: 728
Location: /home
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| Posted: Fri Apr 07, 2017 2:53 pm Post subject: |
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Hey,
in my Canon MFC8230 I have to go and press "Scan to computer" button in the Canon machine before any app realizes I have a scanner attached via network. Maybe, just maybe, thats the case for you too :) |
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mvaterlaus
Apprentice
Joined: 01 Oct 2010
Posts: 235
Location: Switzerland
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| Posted: Tue Apr 11, 2017 9:17 am Post subject: |
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hi therealjrd,
according to [1], your printer is capable of scanning over the network (look for "Scan to PC"). Maybe you did not configure the printers scanner queue. Can you give some information about the following points:
* Do you have built net-print/hplip with the scanner use flag?
* Does the command "scanimage -L" show your printer?
* Did you set up the printer via "hp-setup -i $IP" ?
[1]http://hplipopensource.com/hplip-web/models/laserjet/hp_laserjet_pro_mfp_m127fn.html
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therealjrd
Tux's lil' helper
Joined: 18 May 2006
Posts: 120
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| Posted: Tue Apr 11, 2017 10:53 am Post subject: |
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Thanks mvaterlaus
I read over the link you sent, but it doesn't seem to match my device. I can bring up the config page from the MFP, but there's nothing in any of the menus which offers to let me set of scanning functionality.
I do have hplip with use flag "scanner".
scanimage -L *does* see the device. It says it gets a timeout attempting to contact the device.
I did use hplip to set it up.
[Later]
Argh!
I went back and investigated some more the timeout reported by scanimage. It was attempting to do some sort of SNMP transaction to the device, and the device isn't responding.
A bit of digging revealed that I had disabled SNMP on the device. D'oh! Re-enabling it caused scanimage to work perfectly. Thanks for jogging me to look in the right place.
Fixing thread title. |
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therealjrd
Tux's lil' helper
Joined: 18 May 2006
Posts: 120
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| Posted: Tue Apr 11, 2017 11:04 am Post subject: [Solved] Scan from network-connected HP all-in-one? |
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| Fixing subject for real |
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xaviermiller
Bodhisattva
Joined: 23 Jul 2004
Posts: 8710
Location: ~Brussels - Belgique
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steveL
Watchman
Joined: 13 Sep 2006
Posts: 5153
Location: The Peanut Gallery
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| Posted: Tue Apr 11, 2017 5:01 pm Post subject: |
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That init.d script has a bug, apart from the usual dodgy sh. It will only show up in the Auto-Document feed path: | Code: | | for SCAN_FILE in "$SCAN_FOLDER/$SCAN_MASK*.pnm" |
should be: | Code: | | for SCAN_FILE in "$SCAN_FOLDER/$SCAN_MASK"*.pnm |
No doubt you've fixed it on your side.
Lack of quoting after all the previous care is disappointing, though it also looks like they're wrestling with backticks, which POSIX deprecated back in the mid-1990s.
Don't get me started on efficiency.. ;-)
| Quote: | | I can also post my related scripts if you wish. |
Might be better, for Gentoo.
@therealjrd: To amend the subject line, you need to edit the original post (OP; also sometimes "Original Poster".)
That's the button at the top right of the OP, marked "edit"; then you can change its subject line. |
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xaviermiller
Bodhisattva
Joined: 23 Jul 2004
Posts: 8710
Location: ~Brussels - Belgique
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| Posted: Tue Apr 11, 2017 6:37 pm Post subject: |
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Yeah, seems like I would have to package it 
Meanwhile, here are the scripts:
| /opt/hp-netscan/bin/scanloop: | #!/bin/bash
cd "`dirname $0`"
source /etc/hp-netscan.conf
set -o pipefail
while true; do
# if scan-to button pressed - run the command corresponding to the destination name
name=`wget -q -O - http://${PRINTER}/hp/device/notifications.xml \
| egrep -o '<ScanToDeviceDisplay>(.*)</ScanToDeviceDisplay>' \
| sed -e 's/<ScanToDeviceDisplay>//' \
| sed -e 's/<\/ScanToDeviceDisplay>//' \
| sed -e 's/.*://'` && {
if [ "$name" != "" ]; then
if [ -x "${HELPER_DIR}/$name" ]; then
AUTOFEED=`wget --quiet -O - http://${PRINTER}/hp/device/notifications.xml | grep "<ADFLoaded>" | tail --lines=1 | sed "s/^.*<ADFLoaded>\([01]\)<\/ADFLoaded>.*$/\1/g"`
OUTPUT_PREFIX="scan_$(date '+%Y%m%d-%H%M%S')"
source "${HELPER_DIR}/$name"
if [ "$AUTOFEED" = "0" ]
then
scanimage --format=pnm --mode=Color --resolution=$RESOLUTION > "${SCAN_DIR}/${OUTPUT_PREFIX}_${RESOLUTION}.pnm" 2> /dev/null
else
scanimage --format=pnm --mode=Color --resolution=$RESOLUTION --batch="${SCAN_DIR}/${OUTPUT_PREFIX}_${RESOLUTION}-%d.pnm" --batch-start=1 --source ADF > /dev/null 2>&1
fi
for pnm in $(find "${SCAN_DIR}" -type f -name ${OUTPUT_PREFIX}\*)
do
img=$(echo $pnm | sed -e s/.pnm$/.${OUTPUT_FORMAT}/)
convert -quality 100% "${pnm}" "${img}" > /dev/null 2>&1
rm "${pnm}"
chmod a+rw "${img}"
done
fi
fi
}
# update scan-to destinations in printer if necessary
./scanto_destination -l | sed 's/.*://' >/tmp/printer-dests &&
ls ${HELPER_DIR} >/tmp/command-dests &&
diff /tmp/printer-dests /tmp/command-dests | egrep '<|>' |
sed 's#<#./scanto_destination -d#;s#>#./scanto_destination -a#' | bash
sleep 5
done |
| /opt/hp-netscan/bin/scanto_destination: | #!/bin/bash
# command to maintain the scan-to destination list in the HP Color LaserJet 2840 printer
source /etc/hp-netscan.conf
if [ "$1" == "-a" ]; then
name=$2
postdata="AddScanToDest_1=$HOSTNAME^${name/:/%3a}^DestFolder"
wget -q -O - --post-data="$postdata" http://${PRINTER}/hp/device/set_config.html
elif [ "$1" == "-d" ]; then
name=$2
postdata="RemoveScanToDest_1=${name/:/%3a}"
wget -q -O - --post-data="$postdata" http://${PRINTER}/hp/device/set_config.html
elif [ "$1" == "-l" ]; then
wget -q -O - http://${PRINTER}/hp/device/info_scanto_destinations.xml \
| sed -n '/<DeviceDisplay>/s/<\/*DeviceDisplay>//gp'
else
echo 'usage: scanto_destination -l -a <destname> -d <destname> for listing adding and deleting destinations'
fi |
| etc/hp-netscan.conf: | PRINTER="hplj2840"
SCAN_DIR="/data/nas/scan"
HELPER_DIR="/opt/hp-netscan/helpers" |
| /etc/init.d/hp-netscan: |
#!/sbin/openrc-run
start() {
ebegin "Starting hp_netscan"
start-stop-daemon --start --exec /opt/hp-netscan/bin/scanloop \
--pidfile /var/run/hp-netscan.pid -b -m
eend $?
}
stop() {
ebegin "Stopping hp_netscan"
start-stop-daemon --stop --exec /opt/hp-netscan/bin/scanloop \
--pidfile /var/run/hp-netscan.pid
eend $?
} |
Then I write some "helpers", which are a set of pre-configured scan options, that will be displayed on the printer menu when you press the "scan to" button:
- color_100_jpeg
- color_300_jpeg
- color_600_jpeg
The contents of one is | /opt/hp-netscan/helpers/color_300_jpeg: | RESOLUTION=300
OUTPUT_FORMAT=jpeg |
HTH
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Kind regards,
Xavier Miller |
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