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#!/bin/sh
#
# $FreeBSD$
#
# PROVIDE: dnscrypt_proxy
# REQUIRE: cleanvar SERVERS
# BEFORE: dnsmasq local_unbound named nsmasq pdns unbound
#
# Options to configure dnscrypt-proxy via /etc/rc.conf:
#
# dnscrypt_proxy_enable (bool) Enable service on boot
# Default: NO
#
# dnscrypt_proxy_conf (str) Config file to use
# Default: %%ETCDIR%%/dnscrypt-proxy.toml
#
# dnscrypt_proxy_suexec (bool) Run dnscrypt_proxy as root
# Default: NO
#
# dnscrypt_proxy_uid (str) User to run dnscrypt_proxy as
# Default: %%USER%%
#
# dnscrypt_proxy_mac_portacl_enable (bool)
# Load mac_portacl module (network port access control policy)
# Default: NO
#
# dnscrypt_proxy_mac_portacl_port (int)
# Port used in the mac_portacl rule
# Default: 53
. /etc/rc.subr
name="dnscrypt_proxy"
rcvar="dnscrypt_proxy_enable"
pidfile="/var/run/dnscrypt-proxy.pid"
procname="%%PREFIX%%/sbin/dnscrypt-proxy"
load_rc_config $name
: ${dnscrypt_proxy_enable:="NO"}
: ${dnscrypt_proxy_conf:="%%ETCDIR%%/dnscrypt-proxy.toml"}
: ${dnscrypt_proxy_suexec:="NO"}
: ${dnscrypt_proxy_uid:="%%USER%%"}
: ${dnscrypt_proxy_mac_portacl_enable:="NO"}
: ${dnscrypt_proxy_mac_portacl_port:="53"}
checkyesno dnscrypt_proxy_suexec && dnscrypt_proxy_uid="root"
command="/usr/sbin/daemon"
command_args="-p ${pidfile} -u ${dnscrypt_proxy_uid} -f ${procname} -config ${dnscrypt_proxy_conf}"
start_precmd="dnscrypt_proxy_precmd"
dnscrypt_proxy_precmd() {
local reservedlow reservedhigh rules_current rules_dnscrypt rport ruid
if checkyesno dnscrypt_proxy_mac_portacl_enable ; then
# Check and load mac_portacl module
if ! kldstat -m mac_portacl >/dev/null 2>&1 ; then
if ! kldload mac_portacl ; then
warn "Could not load mac_portacl module."
return 1
fi
fi
# Check and add mac_portacl rules
ruid=$(id -u $dnscrypt_proxy_uid)
rport=$dnscrypt_proxy_mac_portacl_port #smaller variable
rules_current=$(sysctl -n security.mac.portacl.rules)
rules_dnscrypt="uid:${ruid}:tcp:${rport},uid:${ruid}:udp:${rport}"
if [ ! $rules_current = "" ]; then
if ! echo $rules_current | grep "$rules_dnscrypt" >/dev/null 2>&1 ; then
rules_current="${rules_current},${rules_dnscrypt}"
if ! sysctl security.mac.portacl.rules="$rules_current" >/dev/null 2>&1 ; then
warn "Could not insert mac_portacl rules."
return 1
fi
fi
elif ! sysctl security.mac.portacl.rules=$rules_dnscrypt >/dev/null 2>&1 ; then
warn "Could not insert mac_portacl rules."
return 1
fi
# Check and disable net.inet.ip.portrange.* control
reservedlow=$(sysctl -n net.inet.ip.portrange.reservedlow)
reservedhigh=$(sysctl -n net.inet.ip.portrange.reservedhigh)
if [ ! $reservedlow -eq 0 ]; then
if ! sysctl net.inet.ip.portrange.reservedlow=0 >/dev/null 2>&1 ; then
warn "Could not change net.inet.ip.portrange.reservedlow."
return 1
fi
fi
if [ ! $reservedhigh -eq 0 ]; then
if ! sysctl net.inet.ip.portrange.reservedhigh=0 >/dev/null 2>&1 ; then
warn "Could not change net.inet.ip.portrange.reservedhigh."
return 1
fi
fi
fi # dnscrypt_proxy_mac_portacl_enable
return 0
}
run_rc_command "$1"
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