Merge branch 'filtron' of https://github.com/return42/searx into filtron

docs/admin/filtron.rst

@@ -17,6 +17,13 @@ filtron & go
 .. _Go: https://golang.org/
 .. _filtron README: https://github.com/asciimoo/filtron/blob/master/README.md
 
+
+.. sidebar:: init system
+
+   ATM the ``filtron.sh`` supports only systemd init process used by debian,
+   ubuntu and many other dists.  If you have a working init.d file to start/stop
+   filtron service, please contribute.
+
 Filtron needs Go_ installed.  If Go_ is preinstalled, filtron_ is simply
 installed by ``go get`` package management (see `filtron README`_).  If you use
 filtron as middleware, a more isolated setup is recommended.

utils/filtron.sh

@@ -12,8 +12,12 @@ source "$(dirname "${BASH_SOURCE[0]}")/lib.sh"
 FILTRON_ETC="/etc/filtron"
 
 FILTRON_RULES="$FILTRON_ETC/rules.json"
+
+# shellcheck disable=SC2034
 FILTRON_API="127.0.0.1:4005"
+# shellcheck disable=SC2034
 FILTRON_LISTEN="127.0.0.1:4004"
+# shellcheck disable=SC2034
 FILTRON_TARGET="127.0.0.1:8888"
 
 SERVICE_NAME="filtron"
@@ -28,6 +32,7 @@ GO_ENV="${SERVICE_HOME}/.go_env"
 GO_PKG_URL="https://dl.google.com/go/go1.13.5.linux-amd64.tar.gz"
 GO_TAR=$(basename "$GO_PKG_URL")
 
+# shellcheck disable=SC2034
 CONFIG_FILES=(
     "${FILTRON_RULES}"
     "${SERVICE_SYSTEMD_UNIT}"
@@ -44,6 +49,7 @@ usage:
 
   $(basename "$0") shell
   $(basename "$0") install    [all|user]
+  $(basename "$0") update     [filtron]
   $(basename "$0") remove     [all]
   $(basename "$0") activate   [service]
   $(basename "$0") deactivate [service]
@@ -53,6 +59,8 @@ shell
   start interactive shell from user ${SERVICE_USER}
 install / remove all
   complete setup of filtron service
+update filtron
+  Update filtron installation of user ${SERVICE_USER}
 activate
   activate and start service daemon (systemd unit)
 deactivate service
@@ -93,6 +101,12 @@ main(){
                 user) assert_user ;;
                 *) usage "$_usage"; exit 42;;
             esac ;;
+        update)
+            sudo_or_exit
+            case $2 in
+                filtron) update_filtron ;;
+                *) usage "$_usage"; exit 42;;
+            esac ;;
         remove)
             sudo_or_exit
             case $2 in
@@ -242,12 +256,20 @@ EOF
     install_template --no-eval "$FILTRON_RULES" root root 644
 }
 
+update_filtron() {
+    rst_title "Update filtron" section
+    echo
+    tee_stderr <<EOF | sudo -i -u "$SERVICE_USER" 2>&1 | prefix_stdout "$_service_prefix"
+go get -v -u github.com/asciimoo/filtron
+EOF
+}
+
 show_service () {
     rst_title "service status & log"
     echo
     systemctl status filtron.service
     echo
-    read -s -n1 -t 5  -p "// use CTRL-C to stop monitoring the log"
+    read -r -s -n1 -t 5  -p "// use CTRL-C to stop monitoring the log"
     echo
     while true;  do
         trap break 2

utils/lib.sh

@@ -75,7 +75,7 @@ info_msg() { echo -e "INFO:  $*"; }
 
 clean_stdin() {
     if [[ $(uname -s) != 'Darwin' ]]; then
-        while $(read -n1 -t 0.1); do : ; done
+        while read -n1 -t 0.1; do : ; done
     fi
 }