1. The problem I’m having:
Hey, it’s me again, the guy with the strange questions. 
I am templating the Authelia integration example for the opnsense plugin of Caddy. I am trying to fit things into the existing logic, and I want to know if the resulting Caddyfile of my template would work, or not. The caddyfile validation says it’s okay, but I’m unsure since I don’t have any experience with forward_auth.
My main question is, are the additional empty handle allowed, or do they have to be removed (because if the forward_auth is successful, it won’t “break out” of the handle to go to the next one.)
Thank you a lot.
2. Error messages and/or full log output:
I don't have any errors.
3. Caddy version:
v2.7.6 h1:w0NymbG2m9PcvKWsrXO6EEkY9Ru4FJK8uQbYcev1p3A=
4. How I installed and ran Caddy:
a. System environment:
FreeBSD 13.2
b. Command:
service caddy start
c. Service/unit/compose file:
#!/bin/sh
# PROVIDE: caddy
# REQUIRE: LOGIN DAEMON NETWORKING
# KEYWORD: shutdown
# To enable caddy:
#
# - Edit %%PREVIX%%/etc/caddy/Caddyfile
# See https://caddyserver.com/docs/
# - Run 'service enable caddy'
#
# Note while Caddy currently defaults to running as root:wheel, it is strongly
# recommended to run the server as an unprivileged user, such as www:www.
#
# - Use security/portacl-rc to enable privileged port binding:
#
# # pkg install security/portacl-rc
# # sysrc portacl_users+=www
# # sysrc portacl_user_www_tcp="http https"
# # sysrc portacl_user_www_udp="https"
# # service portacl enable
# # service portacl start
#
# - Configure caddy to run as www:www
#
# # sysrc caddy_user=www caddy_group=www
#
# - Note if Caddy has been started as root previously, files in
# /var/log/caddy, /var/db/caddy, and /var/run/caddy may require their ownership
# changing manually.
# Optional settings:
# caddy_command (string): Full path to the caddy binary
# caddy_config (string): Full path to caddy config file
# (/usr/local/etc/caddy/Caddyfile)
# caddy_adapter (string): Config adapter type (caddyfile)
# caddy_admin (string): Default administration endpoint
# (unix//var/run/caddy/caddy.sock)
# caddy_directory (string): Root for caddy storage (ACME certs, etc.)
# (/var/db/caddy)
# caddy_extra_flags (string): Extra flags passed to caddy start
# caddy_logdir (string): Where caddy logs are stored
# (/var/log/caddy)
# caddy_logfile (string): Location of process log (${caddy_logdir}/caddy.log)
# This is for startup/shutdown/error messages.
# To create an access log, see:
# https://caddyserver.com/docs/caddyfile/directives/log
# caddy_user (user): User to run caddy (root)
# caddy_group (group): Group to run caddy (wheel)
#
# This script will honor XDG_CONFIG_HOME/XDG_DATA_HOME. Caddy will create a
# .../caddy subdir in each of those. By default, they are subdirs of /var/db/caddy.
# See https://caddyserver.com/docs/conventions#data-directory
. /etc/rc.subr
name=caddy
rcvar=caddy_enable
desc="Powerful, enterprise-ready, open source web server with automatic HTTPS written in Go"
load_rc_config $name
# Defaults
: ${caddy_enable:=NO}
: ${caddy_adapter:=caddyfile}
: ${caddy_config:="/usr/local/etc/${name}/Caddyfile"}
: ${caddy_admin:="unix//var/run/${name}/${name}.sock"}
: ${caddy_command:="/usr/local/bin/${name}"}
: ${caddy_directory:="/var/db/${name}"}
: ${caddy_extra_flags:=""}
: ${caddy_logdir:="/var/log/${name}"}
: ${caddy_logfile:="${caddy_logdir}/${name}.log"}
: ${caddy_user:="root"}
: ${caddy_group:="wheel"}
# Config and base directories
: ${XDG_CONFIG_HOME:="${caddy_directory}/config"}
: ${XDG_DATA_HOME:="${caddy_directory}/data"}
export XDG_CONFIG_HOME XDG_DATA_HOME
# Default admin interface
export CADDY_ADMIN="${caddy_admin}"
command="${caddy_command}"
pidfile="/var/run/${name}/${name}.pid"
required_files="${caddy_config} ${caddy_command}"
start_precmd="caddy_precmd"
start_cmd="caddy_start"
stop_precmd="caddy_prestop"
# JSON is the native format, so there is no "adapter" for it
if [ "${caddy_adapter}" = "json" ]; then
caddy_flags="--config ${caddy_config}"
else
caddy_flags="--config ${caddy_config} --adapter ${caddy_adapter}"
fi
# Extra Commands
extra_commands="configtest reload reloadssl"
configtest_cmd="caddy_execute validate ${caddy_flags}"
reload_cmd="caddy_execute reload ${caddy_flags}"
reloadssl_cmd="caddy_execute reload --force ${caddy_flags}"
caddy_execute()
{
/usr/bin/su -m "${caddy_user}" -c "${caddy_command} $*"
}
caddy_precmd()
{
# Create required directories and set permissions
/usr/bin/install -d -m 755 -o "${caddy_user}" -g "${caddy_group}" ${caddy_directory}
/usr/bin/install -d -m 700 -o "${caddy_user}" -g "${caddy_group}" ${caddy_directory}/config
/usr/bin/install -d -m 700 -o "${caddy_user}" -g "${caddy_group}" ${caddy_directory}/data
/usr/bin/install -d -m 755 -o "${caddy_user}" -g "${caddy_group}" ${caddy_logdir}
/usr/bin/install -d -m 700 -o "${caddy_user}" -g "${caddy_group}" /var/run/caddy
if [ -e ${caddy_logfile} ]; then
/bin/chmod 644 ${caddy_logfile}
/usr/sbin/chown "${caddy_user}:${caddy_group}" ${caddy_logfile}
else
/usr/bin/install -m 644 -o "${caddy_user}" -g "${caddy_group}" /dev/null ${caddy_logfile}
fi
}
caddy_start()
{
echo -n "Starting caddy... "
/usr/bin/su -m ${caddy_user} -c "${caddy_command} start ${caddy_flags} \
${caddy_extra_flags} --pidfile ${pidfile}" >> ${caddy_logfile} 2>&1
if [ $? -eq 0 ] && ps -ax -o pid | grep -q "$(cat ${pidfile})"; then
echo "done"
echo "Log: ${caddy_logfile}"
else
echo "Error: Caddy failed to start"
echo "Check the caddy log: ${caddy_logfile}"
fi
}
caddy_prestop()
{
local result
echo -n "Stopping caddy... "
result="$(caddy_execute stop ${caddy_flags} 2>&1)"
if [ ${?} -eq 0 ]; then
echo "done"
exit 0
else
if echo "${result}" | grep -q -e "connection refused" \
-e "connect: no such file or directory"; then
echo "admin interface unavailable; using pidfile"
return 0
else
echo "Error: Unable to stop caddy"
echo "Check the caddy log: ${caddy_logfile}"
return 1
fi
fi
}
run_rc_command "$1"
d. My complete Caddy config:
# Global Options
{
log {
output net unixgram//var/caddy/var/run/log {
}
format json {
time_format rfc3339
}
}
import /usr/local/etc/caddy/caddy.d/*.global
}
# Reverse Proxy Domain: "388cc0a7-efc5-44b4-81d6-5757aa85a5ad"
app1.example.com {
handle {
forward_auth authelia:9091 {
uri /api/verify?rd=https://auth.example.com
copy_headers {
Remote-Email
Remote-Groups
Remote-Name
Remote-User
}
}
}
handle {
reverse_proxy app1:8080 {
}
}
}
# Reverse Proxy Domain: "3adc1fb4-67bf-45ce-bd9a-dba74aff4fda"
auth.example.com {
handle {
reverse_proxy authelia:9091 {
}
}
}