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searxng
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searxng/utils/searx.sh

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#!/usr/bin/env bash
# -*- coding: utf-8; mode: sh -*-
# shellcheck disable=SC2119
# shellcheck source=utils/lib.sh
source "$(dirname "${BASH_SOURCE[0]}")/lib.sh"
# ----------------------------------------------------------------------------
# config
# ----------------------------------------------------------------------------
SERVICE_NAME="searx"
SERVICE_USER="${SERVICE_NAME}"
# shellcheck disable=SC2034
SERVICE_GROUP="${SERVICE_USER}"
SERVICE_HOME="/home/${SERVICE_USER}"
SEARX_GIT_URL="https://github.com/asciimoo/searx.git"
SEARX_GIT_BRANCH="origin/master"
# FIXME: Arch Linux & RHEL should be added
SEARX_APT_PACKAGES="\
libapache2-mod-uwsgi uwsgi uwsgi-plugin-python3 \
git build-essential libxslt-dev python3-dev python3-babel zlib1g-dev \
libffi-dev libssl-dev"
SEARX_VENV="${SEARX_HOME}/searx-venv"
SEARX_SRC="${SEARX_HOME}/searx-src"
SEARX_SETTINGS="${SEARX_SRC}/searx/settings.yml"
SEARX_INSTANCE_NAME="${SEARX_INSTANCE_NAME:-searx@$(uname -n)}"
SEARX_UWSGI_APP="${uWSGI_SETUP}/apps-available/searx.ini"
# shellcheck disable=SC2034
CONFIG_FILES=(
"${SEARX_UWSGI_APP}"
)
# shellcheck disable=SC2034
CONFIG_BACKUP_ENCRYPTED=(
"${SEARX_SETTINGS}"
)
# ----------------------------------------------------------------------------
usage(){
# ----------------------------------------------------------------------------
# shellcheck disable=SC1117
cat <<EOF
usage:
$(basename "$0") shell
$(basename "$0") install [all|user]
$(basename "$0") update [searx]
$(basename "$0") remove [all]
$(basename "$0") activate [service]
$(basename "$0") deactivate [service]
$(basename "$0") show [service]
shell
start interactive shell from user ${SERVICE_USER}
install / remove all
complete setup of searx service
update searx
Update searx installation of user ${SERVICE_USER}
activate
activate and start service daemon (systemd unit)
deactivate service
stop and deactivate service daemon (systemd unit)
install user
add service user '$SERVICE_USER' at $SERVICE_HOME
show service
show service status and log
EOF
[ ! -z ${1+x} ] && echo -e "$1"
}
main(){
rst_title "$SERVICE_NAME" part
local _usage="ERROR: unknown or missing $1 command $2"
case $1 in
--source-only) ;;
-h|--help) usage; exit 0;;
shell)
sudo_or_exit
interactive_shell
;;
show)
case $2 in
service)
sudo_or_exit
show_service
;;
*) usage "$_usage"; exit 42;;
esac ;;
install)
sudo_or_exit
case $2 in
all) install_all ;;
user) assert_user ;;
*) usage "$_usage"; exit 42;;
esac ;;
update)
sudo_or_exit
case $2 in
searx) update_searx;;
*) usage "$_usage"; exit 42;;
esac ;;
remove)
sudo_or_exit
case $2 in
all) remove_all;;
user) remove_user ;;
*) usage "$_usage"; exit 42;;
esac ;;
activate)
sudo_or_exit
case $2 in
service) activate_service ;;
*) usage "$_usage"; exit 42;;
esac ;;
deactivate)
sudo_or_exit
case $2 in
service) deactivate_service ;;
*) usage "$_usage"; exit 42;;
esac ;;
*) usage "ERROR: unknown or missing command $1"; exit 42;;
esac
}
_service_prefix=" |$SERVICE_USER| "
install_all() {
rst_title "Install $SERVICE_NAME (service)"
pkg_install "$SEARX_APT_PACKAGES"
wait_key
assert_user
wait_key
clone_searx
wait_key
create_venv
wait_key
configure_searx
wait_key
test_local_searx
wait_key
install_searx_uwsgi
wait_key
# ToDo ...
# install_apache_site
# test_public_searx
# info_msg "searX --> https://${SEARX_APACHE_DOMAIN}${SEARX_APACHE_URL}"
}
update_searx() {
rst_title "Update searx instance"
echo
tee_stderr 0.1 <<EOF | sudo -H -u "${SERVICE_USER}" -i 2>&1 | prefix_stdout "$_service_prefix"
cd ${SEARX_SRC}
cp -f ${SEARX_SETTINGS} ${SEARX_SETTINGS}.backup
git stash push -m "BACKUP -- 'update server' at ($(date))"
git checkout -b "$(basename "$SEARX_GIT_BRANCH")" --track "$SEARX_GIT_BRANCH"
git pull "$SEARX_GIT_BRANCH"
${SEARX_SRC}/manage.sh update_packages
EOF
configure_searx
rst_title "${SEARX_SETTINGS}" section
rstBlock 'Diff between new setting file (<) and backup (>):'
echo
diff "$SEARX_SETTINGS}" "${SEARX_SETTINGS}.backup"
local action
choose_one action "What should happen to the settings file? " \
"keep new configuration" \
"revert to the old configuration (backup file)" \
"start interactiv shell"
case $action in
"keep new configuration")
info_msg "continue using new settings file"
;;
"revert to the old configuration (backup file)")
tee_stderr 0.1 <<EOF | sudo -H -u "${SERVICE_USER}" -i 2>&1 | prefix_stdout "$_service_prefix"
cp -f ${SEARX_SETTINGS}.backup ${SEARX_SETTINGS}
EOF
;;
"start interactiv shell")
interactive_shell
;;
esac
chown "${SERVICE_USER}:${SERVICE_USER}" "${SEARX_SETTINGS}"
# shellcheck disable=SC2016
rst_para 'Diff between local modified settings (<) and $SEARX_GIT_BRANCH branch (>):'
echo
git_diff
wait_key
uWSGI_restart
}
remove_all() {
rst_title "De-Install $SERVICE_NAME (service)"
remove_service
wait_key
remove_user
}
assert_user() {
rst_title "user $SERVICE_USER" section
echo
tee_stderr 1 <<EOF | bash | prefix_stdout
sudo -H adduser --shell /bin/bash --system --home "$SERVICE_HOME" \
--disabled-password --group --gecos 'searx' $SERVICE_USER
sudo -H usermod -a -G shadow $SERVICE_USER
groups $SERVICE_USER
EOF
#SERVICE_HOME="$(sudo -i -u "$SERVICE_USER" echo \$HOME)"
#export SERVICE_HOME
#echo "export SERVICE_HOME=$SERVICE_HOME"
}
remove_user() {
rst_title "Drop $SERVICE_USER HOME" section
if ask_yn "Do you really want to drop $SERVICE_USER home folder?"; then
userdel -r -f "$SERVICE_USER" 2>&1 | prefix_stdout
else
rst_para "Leave HOME folder $(du -sh "$SERVICE_HOME") unchanged."
fi
}
# shellcheck disable=SC2164
clone_searx(){
rst_title "Clone searx sources" section
echo
git_clone "$SEARX_GIT_URL" "$SEARX_SRC" \
"$SEARX_GIT_BRANCH" "$SERVICE_USER"
pushd "${SEARX_SRC}" > /dev/null
tee_stderr 0.1 <<EOF | sudo -H -u "${SERVICE_USER}" -i 2>&1 | prefix_stdout "$_service_prefix"
cd "${SEARX_SRC}"
git config user.email "$ADMIN_EMAIL"
git config user.name "$ADMIN_NAME"
git checkout "$SEARX_GIT_BRANCH"
EOF
popd > /dev/null
}
create_venv(){
rst_title "Create virtualenv (python)" section
rst_para "Create venv in ${SEARX_VENV} and install needed python packages."
echo
tee_stderr 0.1 <<EOF | sudo -H -u "${SERVICE_USER}" -i 2>&1 | prefix_stdout "$_service_prefix"
rm -rf "${SEARX_VENV}"
python3 -m venv "${SEARX_VENV}"
. ${SEARX_VENV}/bin/activate
${SEARX_SRC}/manage.sh update_packages
EOF
tee_stderr 0.1 <<EOF | sudo -H -u "${SERVICE_USER}" -i 2>&1 | prefix_stdout "$_service_prefix"
grep -qFs -- 'source ${SEARX_VENV}/bin/activate' ~/.profile \
|| echo 'source ${SEARX_VENV}/bin/activate' >> ~/.profile
EOF
}
configure_searx(){
rst_title "Configure searx" section
rst_para "Setup searx config located at $SEARX_SETTINGS"
echo
tee_stderr 0.1 <<EOF | sudo -H -u "${SERVICE_USER}" -i 2>&1 | prefix_stdout "$_service_prefix"
cd ${SEARX_SRC}
sed -i -e "s/ultrasecretkey/$(openssl rand -hex 16)/g" "$SEARX_SETTINGS"
sed -i -e "s/{instance_name}/${SEARX_INSTANCE_NAME}/g" "$SEARX_SETTINGS"
EOF
}
test_local_searx(){
rstHeading "Testing searx instance localy" section
echo
tee_stderr 0.1 <<EOF | sudo -H -u "${SERVICE_USER}" -i 2>&1 | prefix_stdout "$_service_prefix"
cd ${SEARX_SRC}
sed -i -e "s/debug : False/debug : True/g" "$SEARX_SETTINGS"
timeout 5 python3 searx/webapp.py &
sleep 1
curl --location --verbose --head --insecure http://127.0.0.1:8888/
sed -i -e "s/debug : True/debug : False/g" "$SEARX_SETTINGS"
EOF
waitKEY
}
install_searx_uwsgi() {
rst_title "Install searx's uWSGI app (searx.ini)" section
echo
uWSGI_install_app "$SEARX_UWSGI_APP"
}
remove_searx_uwsgi() {
rst_title "Remove searx's uWSGI app (searx.ini)" section
echo
uWSGI_remove_app "$SEARX_UWSGI_APP"
}
activate_service () {
rst_title "Activate $SERVICE_NAME (service)" section
uWSGI_enable_app "$SEARX_UWSGI_APP"
}
deactivate_service () {
rst_title "De-Activate $SERVICE_NAME (service)" section
uWSGI_disable_app "$SEARX_UWSGI_APP"
}
interactive_shell(){
echo "// exit with CTRL-D"
sudo -H -u "${SERVICE_USER}" -i
}
git_diff(){
sudo -H -u "${SERVICE_USER}" -i <<EOF
cd ${SEARX_REPO_FOLDER}
git --no-pager diff
EOF
}
show_service () {
rst_title "service status & log"
echo
systemctl status uwsgi.service
echo
read -r -s -n1 -t 5 -p "// use CTRL-C to stop monitoring the log"
echo
while true; do
trap break 2
journalctl -f -u uwsgi.service
done
return 0
}
# ----------------------------------------------------------------------------
main "$@"
# ----------------------------------------------------------------------------
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