nginx: introduce migration for old uci conf template

Introduce support for migration of old uci conf template to new version.
Uci conf template are saved in config backup. This cause problem on config
restore as old config template might have compatibility problem with new
nginx implementation.

Add logic to migrate the template script at runtime to correctly align
to latest change from nginx and nginx-util.

Fixes: 65a676ed56fb ("nginx: introduce support for dynamic modules")
Fixes: #20904
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>

diff --git a/net/nginx/files/nginx.init b/net/nginx/files/nginx.init
index 632a3f10a7ec6e7cce12f04948c16517795c4190..9e3ed0a7ac25c353cddf644bee8578c00357e581 100644 (file)
--- a/net/nginx/files/nginx.init
+++ b/net/nginx/files/nginx.init
@@ -8,11 +8,27 @@ USE_PROCD=1
 G_OPTS="daemon off;"
 
 NGINX_UTIL="/usr/bin/nginx-util"
+UCI_CONF_TEMPLATE="/etc/nginx/uci.conf.template"
+LATEST_UCI_CONF_VERSION="1.1"
 
 eval $("${NGINX_UTIL}" get_env)
 
 CONF=""
 
+nginx_check_luci_template() {
+       UCI_CONF_VERSION="$(sed -nr 's/# UCI_CONF_VERSION=(.*)/\1/p' $UCI_CONF_TEMPLATE)"
+
+       # No need to migrate already latest version
+       if [ "$UCI_CONF_VERSION" = "$LATEST_UCI_CONF_VERSION" ]; then
+               return
+       fi
+
+       if [ -z "$UCI_CONF_VERSION" ]; then
+               echo "" >> $UCI_CONF_TEMPLATE
+               echo "include module.d/*.module;" >> $UCI_CONF_TEMPLATE
+               echo "# UCI_CONF_VERSION=1.1" >> $UCI_CONF_TEMPLATE
+       fi
+}
 
 nginx_init() {
        [ -z "${CONF}" ] || return # already called.
@@ -23,6 +39,10 @@ nginx_init() {
        rm -f "$(readlink "${UCI_CONF}")"
        ${NGINX_UTIL} init_lan
 
+       if [ -f $UCI_CONF_TEMPLATE ]; then
+               nginx_check_luci_template
+       fi
+
        if [ -e "${UCI_CONF}" ]
        then CONF="${UCI_CONF}"
        else CONF="${NGINX_CONF}"