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#!/bin/bash
# T&M Hansson IT AB © - 2020, https://www.hanssonit.se/
# shellcheck disable=2034,2059
true
SCRIPT_NAME="Preview Generator"
# shellcheck source=lib.sh
. <(curl -sL https://raw.githubusercontent.com/nextcloud/vm/master/lib.sh)
# Check for errors + debug code and abort if something isn't right
# 1 = ON
# 0 = OFF
DEBUG=0
debug_mode
# Check if root
root_check
# PHP 7.x is needed
if is_this_installed php5.6-common
then
msg_box "At least PHP 7.X is supported, please upgrade your PHP version: https://shop.hanssonit.se/product/upgrade-php-version-including-dependencies/"
exit
elif is_this_installed php5.5-common
then
msg_box "At least PHP 7.X is supported, please upgrade your PHP version: https://shop.hanssonit.se/product/upgrade-php-version-including-dependencies/"
exit
fi
# Encryption may not be enabled
if is_app_enabled encryption
then
msg_box "It seems like you have encryption enabled which is unsupported when using the Preview Generator"
exit
fi
msg_box "This script will install the Preview Generator.
It can speedup the loading of previews in Nextcloud a lot.
Please note: If you continue, all your current Preview Generator settings will be lost, if any."
if yesno_box_yes "Do you want to install the Preview Generator?"
then
# Install preview generator
print_text_in_color "$ICyan" "Installing the Preview Generator..."
install_and_enable_app previewgenerator
# check if the previewgenerator is installed and enabled
if is_app_installed previewgenerator
then
# enable previews
occ_command config:system:set enable_previews --value=true --type=boolean
# install needed dependency for movies
install_if_not ffmpeg
# reset the preview formats
occ_command config:system:delete "enabledPreviewProviders"
# reset the cronjob
print_text_in_color "$ICyan" "Resetting the cronjob for the Preview Generation"
crontab -u www-data -l | grep -v 'preview:pre-generate' | crontab -u www-data -
else
exit
fi
else
exit
fi
msg_box "In the next step you can choose to install a package called imagick to speed up the generation of previews and add support for more filetypes.
The currently supported filetypes are:
* PNG
* JPEG
* GIF
* BMP
* MarkDown
* MP3
* TXT
* Movie
* Photoshop (needs imagick)
* SVG (needs imagick)
* TIFF (needs imagick)"
msg_box "IMPORTANT NOTE!!
Imagick will put your server at risk as it's is known to have several flaws.
You can check this issue to understand why: https://github.com/nextcloud/vm/issues/743
Please note: If you choose not to install imagick, it will get removed now."
if yesno_box_yes "Do you want to install imagick?"
then
# Install imagick
install_if_not php-imagick
install_if_not libmagickcore-6.q16-3-extra
# Choose file formats fo the case when imagick is installed.
# for additional previews please look at the nextcloud documentation. But these probably won't work.
choice=$(whiptail --title "$TITLE - Choose file formats" --checklist "Now you can choose for which file formats you would like to generate previews for\n$CHECKLIST_GUIDE" "$WT_HEIGHT" "$WT_WIDTH" 4 \
"PNG" "" ON \
"JPEG" "" ON \
"GIF" "" ON \
"BMP" "" ON \
"MarkDown" "" ON \
"MP3" "" ON \
"TXT" "" ON \
"Movie" "" ON \
"Photoshop" "" ON \
"SVG" "" ON \
"TIFF" "" ON 3>&1 1>&2 2>&3)
case "$choice" in
*"PNG"*)
occ_command config:system:set enabledPreviewProviders 0 --value="OC\\Preview\\PNG"
;;&
*"JPEG"*)
occ_command config:system:set enabledPreviewProviders 1 --value="OC\\Preview\\JPEG"
;;&
*"GIF"*)
occ_command config:system:set enabledPreviewProviders 2 --value="OC\\Preview\\GIF"
;;&
*"BMP"*)
occ_command config:system:set enabledPreviewProviders 3 --value="OC\\Preview\\BMP"
;;&
*"MarkDown"*)
occ_command config:system:set enabledPreviewProviders 4 --value="OC\\Preview\\MarkDown"
;;&
*"MP3"*)
occ_command config:system:set enabledPreviewProviders 5 --value="OC\\Preview\\MP3"
;;&
*"TXT"*)
occ_command config:system:set enabledPreviewProviders 6 --value="OC\\Preview\\TXT"
;;&
*"Movie"*)
occ_command config:system:set enabledPreviewProviders 7 --value="OC\\Preview\\Movie"
;;&
*"Photoshop"*)
occ_command config:system:set enabledPreviewProviders 8 --value="OC\\Preview\\Photoshop"
;;&
*"SVG"*)
occ_command config:system:set enabledPreviewProviders 9 --value="OC\\Preview\\SVG"
;;&
*"TIFF"*)
occ_command config:system:set enabledPreviewProviders 10 --value="OC\\Preview\\TIFF"
;;&
*)
;;
esac
else
# check if imagick ist installed and remove it
if is_this_installed php-imagick
then
apt-get purge php-imagick -y
fi
# check if libmagickcore is installed and remove it
if is_this_installed libmagickcore-6.q16-3-extra
then
apt-get purge libmagickcore-6.q16-3-extra -y
fi
# Choose file formats fo the case when imagick is not installed.
# for additional previews please look at the nextcloud documentation. But these probably won't work.
choice=$(whiptail --title "$TITLE - Choose file formats" --checklist "Now you can choose for which file formats you would like to generate previews for\n$CHECKLIST_GUIDE" "$WT_HEIGHT" "$WT_WIDTH" 4 \
"PNG" "" ON \
"JPEG" "" ON \
"GIF" "" ON \
"BMP" "" ON \
"MarkDown" "" ON \
"MP3" "" ON \
"TXT" "" ON \
"Movie" "" ON 3>&1 1>&2 2>&3)
case "$choice" in
*"PNG"*)
occ_command config:system:set enabledPreviewProviders 11 --value="OC\\Preview\\PNG"
;;&
*"JPEG"*)
occ_command config:system:set enabledPreviewProviders 12 --value="OC\\Preview\\JPEG"
;;&
*"GIF"*)
occ_command config:system:set enabledPreviewProviders 13 --value="OC\\Preview\\GIF"
;;&
*"BMP"*)
occ_command config:system:set enabledPreviewProviders 14 --value="OC\\Preview\\BMP"
;;&
*"MarkDown"*)
occ_command config:system:set enabledPreviewProviders 15 --value="OC\\Preview\\MarkDown"
;;&
*"MP3"*)
occ_command config:system:set enabledPreviewProviders 16 --value="OC\\Preview\\MP3"
;;&
*"TXT"*)
occ_command config:system:set enabledPreviewProviders 17 --value="OC\\Preview\\TXT"
;;&
*"Movie"*)
occ_command config:system:set enabledPreviewProviders 18 --value="OC\\Preview\\Movie"
;;&
*)
;;
esac
fi
# Set aspect ratio
occ_command config:app:set previewgenerator squareSizes --value="32 256"
occ_command config:app:set previewgenerator widthSizes --value="256 384"
occ_command config:app:set previewgenerator heightSizes --value="256"
occ_command config:system:set preview_max_x --value="2048"
occ_command config:system:set preview_max_y --value="2048"
occ_command config:system:set jpeg_quality --value="60"
occ_command config:app:set preview jpeg_quality --value="60"
msg_box "In the last step you can define a specific Nextcloud user for which will be the user that runs the Preview Generation.
The default behaviour (just hit [ENTER]) is to run with the system user 'www-data' which will generate previews for all users.
If you on the other hand choose to use a specific user, previews will ONLY be generated for that specific user."
if ! yesno_box_no "Do you want to choose a specific Nextcloud user to generate previews?"
then
print_text_in_color "$ICyan" "Using www-data (all Nextcloud users) for generating previews..."
# Add crontab for www-data
crontab -u www-data -l | { cat; echo "0 4 * * * php -f $NCPATH/occ preview:pre-generate >> $VMLOGS/previewgenerator.log"; } | crontab -u www-data -
touch "$VMLOGS"/previewgenerator.log
chown www-data:www-data "$VMLOGS"/previewgenerator.log
# Pre generate everything
occ_command preview:generate-all
else
while true
do
PREVIEW_USER=$(input_box "Enter the Nextcloud user for which you want to run the Preview Generation (as a scheluded task)")
if [ -z "$(occ_command user:list | grep "$PREVIEW_USER" | awk '{print $3}')" ]
then
msg_box "It seems like the user you entered ($PREVIEW_USER) doesn't exist, please try again."
else
break
fi
done
# Add crontab for $PREVIEW_USER
crontab -u www-data -l | { cat; echo "0 4 * * * php -f $NCPATH/occ preview:pre-generate $PREVIEW_USER >> $VMLOGS/previewgenerator.log"; } | crontab -u www-data -
touch "$VMLOGS"/previewgenerator.log
chown www-data:www-data "$VMLOGS"/previewgenerator.log
# Pre generate everything
occ_command preview:generate-all "$PREVIEW_USER"
fi
|
